diff --git a/adb/adb.c b/adb/adb.c
index 41270f9..e116414 100644
--- a/adb/adb.c
+++ b/adb/adb.c
@@ -39,6 +39,8 @@
 #include <sys/capability.h>
 #include <linux/prctl.h>
 #include <sys/mount.h>
+#include <getopt.h>
+#include <selinux/selinux.h>
 #else
 #include "usb_vendors.h"
 #endif
@@ -54,6 +56,7 @@
 
 #if !ADB_HOST
 static const char *adb_device_banner = "device";
+static const char *root_seclabel = NULL;
 #endif
 
 void fatal(const char *fmt, ...)
@@ -1335,12 +1338,11 @@
         ** AID_NET_BT and AID_NET_BT_ADMIN to diagnose bluetooth (hcidump)
         ** AID_SDCARD_R to allow reading from the SD card
         ** AID_SDCARD_RW to allow writing to the SD card
-        ** AID_MOUNT to allow unmounting the SD card before rebooting
         ** AID_NET_BW_STATS to read out qtaguid statistics
         */
         gid_t groups[] = { AID_ADB, AID_LOG, AID_INPUT, AID_INET, AID_GRAPHICS,
                            AID_NET_BT, AID_NET_BT_ADMIN, AID_SDCARD_R, AID_SDCARD_RW,
-                           AID_MOUNT, AID_NET_BW_STATS };
+                           AID_NET_BW_STATS };
         if (setgroups(sizeof(groups)/sizeof(groups[0]), groups) != 0) {
             exit(1);
         }
@@ -1356,6 +1358,12 @@
         D("Local port disabled\n");
     } else {
         char local_name[30];
+        if ((root_seclabel != NULL) && (is_selinux_enabled() > 0)) {
+            // b/12587913: fix setcon to allow const pointers
+            if (setcon((char *)root_seclabel) < 0) {
+                exit(1);
+            }
+        }
         build_local_name(local_name, sizeof(local_name), server_port);
         if(install_listener(local_name, "*smartsocket*", NULL, 0)) {
             exit(1);
@@ -1642,10 +1650,6 @@
     return -1;
 }
 
-#if !ADB_HOST
-int recovery_mode = 0;
-#endif
-
 int main(int argc, char **argv)
 {
 #if ADB_HOST
@@ -1657,9 +1661,26 @@
     /* If adbd runs inside the emulator this will enable adb tracing via
      * adb-debug qemud service in the emulator. */
     adb_qemu_trace_init();
-    if((argc > 1) && (!strcmp(argv[1],"recovery"))) {
-        adb_device_banner = "recovery";
-        recovery_mode = 1;
+    while(1) {
+        int c;
+        int option_index = 0;
+        static struct option opts[] = {
+            {"root_seclabel", required_argument, 0, 's' },
+            {"device_banner", required_argument, 0, 'b' }
+        };
+        c = getopt_long(argc, argv, "", opts, &option_index);
+        if (c == -1)
+            break;
+        switch (c) {
+        case 's':
+            root_seclabel = optarg;
+            break;
+        case 'b':
+            adb_device_banner = optarg;
+            break;
+        default:
+            break;
+        }
     }
 
     start_device_log();
diff --git a/adb/file_sync_service.c b/adb/file_sync_service.c
index c2401b8..c3eb905 100644
--- a/adb/file_sync_service.c
+++ b/adb/file_sync_service.c
@@ -43,11 +43,10 @@
 {
     int ret;
     char *x = name + 1;
-    unsigned int uid, gid;
+    uid_t uid = -1;
+    gid_t gid = -1;
     unsigned int mode = 0775;
     uint64_t cap = 0;
-    uid = getuid();
-    gid = getgid();
 
     if(name[0] != '/') return -1;
 
@@ -172,8 +171,8 @@
     return fail_message(s, strerror(errno));
 }
 
-static int handle_send_file(int s, char *path, unsigned int uid,
-        unsigned int gid, mode_t mode, char *buffer)
+static int handle_send_file(int s, char *path, uid_t uid,
+        gid_t gid, mode_t mode, char *buffer)
 {
     syncmsg msg;
     unsigned int timestamp = 0;
@@ -201,11 +200,13 @@
             fail_errno(s);
             errno = 0;
         }
-        /* fchown clears the setuid bit - restore it if present */
-        if(fchmod(fd, mode) != 0) {
-            fail_errno(s);
-            errno = 0;
-        }
+
+        /*
+         * fchown clears the setuid bit - restore it if present.
+         * Ignore the result of calling fchmod. It's not supported
+         * by all filesystems. b/12441485
+         */
+        fchmod(fd, mode);
     }
 
     for(;;) {
@@ -353,10 +354,9 @@
 #else
     {
 #endif
-        unsigned int uid, gid;
+        uid_t uid = -1;
+        gid_t gid = -1;
         uint64_t cap = 0;
-        uid = getuid();
-        gid = getgid();
 
         /* copy user permission bits to "group" and "other" permissions */
         mode |= ((mode >> 3) & 0070);
diff --git a/adb/services.c b/adb/services.c
index 95cd7d0..dcaf276 100644
--- a/adb/services.c
+++ b/adb/services.c
@@ -86,7 +86,7 @@
 {
     char buf[100];
     char value[PROPERTY_VALUE_MAX];
-    int port = (int)cookie;
+    int port = (int) (uintptr_t) cookie;
 
     if (port <= 0) {
         snprintf(buf, sizeof(buf), "invalid port\n");
@@ -116,23 +116,10 @@
 {
     char buf[100];
     char property_val[PROPERTY_VALUE_MAX];
-    int pid, ret;
+    int ret;
 
     sync();
 
-    /* Attempt to unmount the SD card first.
-     * No need to bother checking for errors.
-     */
-    pid = fork();
-    if (pid == 0) {
-        /* ask vdc to unmount it */
-        execl("/system/bin/vdc", "/system/bin/vdc", "volume", "unmount",
-                getenv("EXTERNAL_STORAGE"), "force", NULL);
-    } else if (pid > 0) {
-        /* wait until vdc succeeds or fails */
-        waitpid(pid, &ret, 0);
-    }
-
     ret = snprintf(property_val, sizeof(property_val), "reboot,%s", (char *) arg);
     if (ret >= (int) sizeof(property_val)) {
         snprintf(buf, sizeof(buf), "reboot string too long. length=%d\n", ret);
@@ -269,7 +256,7 @@
 #if !ADB_HOST
 static void subproc_waiter_service(int fd, void *cookie)
 {
-    pid_t pid = (pid_t)cookie;
+    pid_t pid = (pid_t) (uintptr_t) cookie;
 
     D("entered. fd=%d of pid=%d\n", fd, pid);
     for (;;) {
@@ -314,7 +301,7 @@
     sti = malloc(sizeof(stinfo));
     if(sti == 0) fatal("cannot allocate stinfo");
     sti->func = subproc_waiter_service;
-    sti->cookie = (void*)pid;
+    sti->cookie = (void*) (uintptr_t) pid;
     sti->fd = ret_fd;
 
     if(adb_thread_create( &t, service_bootstrap_func, sti)){
@@ -395,7 +382,7 @@
         if (sscanf(name + 6, "%d", &port) == 0) {
             port = 0;
         }
-        ret = create_service_thread(restart_tcp_service, (void *)port);
+        ret = create_service_thread(restart_tcp_service, (void *) (uintptr_t) port);
     } else if(!strncmp(name, "usb:", 4)) {
         ret = create_service_thread(restart_usb_service, NULL);
 #endif
diff --git a/adb/sockets.c b/adb/sockets.c
index 7f54ad9..de14a22 100644
--- a/adb/sockets.c
+++ b/adb/sockets.c
@@ -342,7 +342,7 @@
 
         while(avail > 0) {
             r = adb_read(fd, x, avail);
-            D("LS(%d): post adb_read(fd=%d,...) r=%d (errno=%d) avail=%d\n", s->id, s->fd, r, r<0?errno:0, avail);
+            D("LS(%d): post adb_read(fd=%d,...) r=%d (errno=%d) avail=%zu\n", s->id, s->fd, r, r<0?errno:0, avail);
             if(r > 0) {
                 avail -= r;
                 x += r;
diff --git a/adb/transport.c b/adb/transport.c
index 224fe55..6002530 100644
--- a/adb/transport.c
+++ b/adb/transport.c
@@ -1142,9 +1142,9 @@
     char *p = ptr;
     int r;
 #if ADB_TRACE
-    int  len0 = len;
+    size_t len0 = len;
 #endif
-    D("readx: fd=%d wanted=%d\n", fd, (int)len);
+    D("readx: fd=%d wanted=%zu\n", fd, len);
     while(len > 0) {
         r = adb_read(fd, p, len);
         if(r > 0) {
@@ -1163,7 +1163,7 @@
     }
 
 #if ADB_TRACE
-    D("readx: fd=%d wanted=%d got=%d\n", fd, len0, len0 - len);
+    D("readx: fd=%d wanted=%zu got=%zu\n", fd, len0, len0 - len);
     dump_hex( ptr, len0 );
 #endif
     return 0;
diff --git a/adb/transport_local.c b/adb/transport_local.c
index 1cfa24d..d2dbca6 100644
--- a/adb/transport_local.c
+++ b/adb/transport_local.c
@@ -159,7 +159,7 @@
     int serverfd, fd;
     struct sockaddr addr;
     socklen_t alen;
-    int port = (int)arg;
+    int port = (int) (uintptr_t) arg;
 
     D("transport: server_socket_thread() starting\n");
     serverfd = -1;
@@ -241,7 +241,7 @@
 /* 'ok' reply from the adb QEMUD service. */
 static const char _ok_resp[]    = "ok";
 
-    const int port = (int)arg;
+    const int port = (int) (uintptr_t) arg;
     int res, fd;
     char tmp[256];
     char con_name[32];
@@ -326,7 +326,7 @@
 
     D("transport: local %s init\n", HOST ? "client" : "server");
 
-    if(adb_thread_create(&thr, func, (void *)port)) {
+    if(adb_thread_create(&thr, func, (void *) (uintptr_t) port)) {
         fatal_errno("cannot create local socket %s thread",
                     HOST ? "client" : "server");
     }
diff --git a/adb/usb_linux.c b/adb/usb_linux.c
index 7bf2057..8ff753e 100644
--- a/adb/usb_linux.c
+++ b/adb/usb_linux.c
@@ -179,7 +179,7 @@
 
                 // should have device and configuration descriptors, and atleast two endpoints
             if (desclength < USB_DT_DEVICE_SIZE + USB_DT_CONFIG_SIZE) {
-                D("desclength %d is too small\n", desclength);
+                D("desclength %zu is too small\n", desclength);
                 adb_close(fd);
                 continue;
             }
diff --git a/adb/usb_linux_client.c b/adb/usb_linux_client.c
index fb1dad0..8426e0e 100644
--- a/adb/usb_linux_client.c
+++ b/adb/usb_linux_client.c
@@ -264,23 +264,25 @@
 {
     ssize_t ret;
 
-    D("OPENING %s\n", USB_FFS_ADB_EP0);
-    h->control = adb_open(USB_FFS_ADB_EP0, O_RDWR);
-    if (h->control < 0) {
-        D("[ %s: cannot open control endpoint: errno=%d]\n", USB_FFS_ADB_EP0, errno);
-        goto err;
-    }
+    if (h->control < 0) { // might have already done this before
+        D("OPENING %s\n", USB_FFS_ADB_EP0);
+        h->control = adb_open(USB_FFS_ADB_EP0, O_RDWR);
+        if (h->control < 0) {
+            D("[ %s: cannot open control endpoint: errno=%d]\n", USB_FFS_ADB_EP0, errno);
+            goto err;
+        }
 
-    ret = adb_write(h->control, &descriptors, sizeof(descriptors));
-    if (ret < 0) {
-        D("[ %s: write descriptors failed: errno=%d ]\n", USB_FFS_ADB_EP0, errno);
-        goto err;
-    }
+        ret = adb_write(h->control, &descriptors, sizeof(descriptors));
+        if (ret < 0) {
+            D("[ %s: write descriptors failed: errno=%d ]\n", USB_FFS_ADB_EP0, errno);
+            goto err;
+        }
 
-    ret = adb_write(h->control, &strings, sizeof(strings));
-    if (ret < 0) {
-        D("[ %s: writing strings failed: errno=%d]\n", USB_FFS_ADB_EP0, errno);
-        goto err;
+        ret = adb_write(h->control, &strings, sizeof(strings));
+        if (ret < 0) {
+            D("[ %s: writing strings failed: errno=%d]\n", USB_FFS_ADB_EP0, errno);
+            goto err;
+        }
     }
 
     h->bulk_out = adb_open(USB_FFS_ADB_OUT, O_RDWR);
@@ -320,14 +322,14 @@
     while (1) {
         // wait until the USB device needs opening
         adb_mutex_lock(&usb->lock);
-        while (usb->control != -1)
+        while (usb->control != -1 && usb->bulk_in != -1 && usb->bulk_out != -1)
             adb_cond_wait(&usb->notify, &usb->lock);
         adb_mutex_unlock(&usb->lock);
 
         while (1) {
             init_functionfs(usb);
 
-            if (usb->control >= 0)
+            if (usb->control >= 0 && usb->bulk_in >= 0 && usb->bulk_out >= 0)
                 break;
 
             adb_sleep_ms(1000);
@@ -384,7 +386,7 @@
         ret = adb_read(bulk_out, buf + count, length - count);
         if (ret < 0) {
             if (errno != EINTR) {
-                D("[ bulk_read failed fd=%d length=%d count=%d ]\n",
+                D("[ bulk_read failed fd=%d length=%zu count=%zu ]\n",
                                            bulk_out, length, count);
                 return ret;
             }
@@ -424,10 +426,13 @@
         D("[ kick: sink (fd=%d) clear halt failed (%d) ]", h->bulk_out, errno);
 
     adb_mutex_lock(&h->lock);
-    adb_close(h->control);
+
+    // don't close ep0 here, since we may not need to reinitialize it with
+    // the same descriptors again. if however ep1/ep2 fail to re-open in
+    // init_functionfs, only then would we close and open ep0 again.
     adb_close(h->bulk_out);
     adb_close(h->bulk_in);
-    h->control = h->bulk_out = h->bulk_in = -1;
+    h->bulk_out = h->bulk_in = -1;
 
     // notify usb_ffs_open_thread that we are disconnected
     adb_cond_signal(&h->notify);
diff --git a/adb/usb_vendors.c b/adb/usb_vendors.c
index f679a54..cd5885e 100755
--- a/adb/usb_vendors.c
+++ b/adb/usb_vendors.c
@@ -58,6 +58,8 @@
 #define VENDOR_ID_ECS           0x03fc
 // EMERGING_TECH's USB Vendor ID
 #define VENDOR_ID_EMERGING_TECH 0x297F
+// Emerson's USB Vendor ID
+#define VENDOR_ID_EMERSON       0x2207
 // Foxconn's USB Vendor ID
 #define VENDOR_ID_FOXCONN       0x0489
 // Fujitsu's USB Vendor ID
@@ -192,6 +194,7 @@
     VENDOR_ID_DELL,
     VENDOR_ID_ECS,
     VENDOR_ID_EMERGING_TECH,
+    VENDOR_ID_EMERSON,
     VENDOR_ID_FOXCONN,
     VENDOR_ID_FUJITSU,
     VENDOR_ID_FUNAI,
diff --git a/debuggerd/Android.mk b/debuggerd/Android.mk
index 2fe7c7a..422a86a 100644
--- a/debuggerd/Android.mk
+++ b/debuggerd/Android.mk
@@ -6,14 +6,20 @@
 include $(CLEAR_VARS)
 
 LOCAL_SRC_FILES:= \
-	backtrace.c \
-	debuggerd.c \
-	getevent.c \
-	tombstone.c \
-	utility.c \
-	$(TARGET_ARCH)/machine.c
+	backtrace.cpp \
+	debuggerd.cpp \
+	getevent.cpp \
+	tombstone.cpp \
+	utility.cpp \
+	$(TARGET_ARCH)/machine.cpp \
 
-LOCAL_CFLAGS := -Wall -Wno-unused-parameter -std=gnu99
+LOCAL_CONLYFLAGS := -std=gnu99
+LOCAL_CPPFLAGS := -std=gnu++11
+LOCAL_CFLAGS := \
+	-Wall \
+	-Wno-array-bounds \
+	-Werror \
+
 LOCAL_MODULE := debuggerd
 
 ifeq ($(ARCH_ARM_HAVE_VFP),true)
@@ -30,6 +36,8 @@
 	liblog \
 	libselinux \
 
+include external/stlport/libstlport.mk
+
 include $(BUILD_EXECUTABLE)
 
 include $(CLEAR_VARS)
@@ -38,7 +46,7 @@
 LOCAL_MODULE := crasher
 LOCAL_MODULE_PATH := $(TARGET_OUT_OPTIONAL_EXECUTABLES)
 LOCAL_MODULE_TAGS := optional
-LOCAL_CFLAGS += -fstack-protector-all
+LOCAL_CFLAGS += -fstack-protector-all -Wno-unused-parameter -Wno-free-nonheap-object
 #LOCAL_FORCE_STATIC_EXECUTABLE := true
 LOCAL_SHARED_LIBRARIES := libcutils liblog libc
 include $(BUILD_EXECUTABLE)
diff --git a/debuggerd/arm/machine.c b/debuggerd/arm/machine.c
deleted file mode 100644
index 4ab6026..0000000
--- a/debuggerd/arm/machine.c
+++ /dev/null
@@ -1,179 +0,0 @@
-/* system/debuggerd/debuggerd.c
-**
-** Copyright 2006, The Android Open Source Project
-**
-** Licensed under the Apache License, Version 2.0 (the "License");
-** you may not use this file except in compliance with the License.
-** You may obtain a copy of the License at
-**
-**     http://www.apache.org/licenses/LICENSE-2.0
-**
-** Unless required by applicable law or agreed to in writing, software
-** distributed under the License is distributed on an "AS IS" BASIS,
-** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-** See the License for the specific language governing permissions and
-** limitations under the License.
-*/
-
-#include <errno.h>
-#include <stdbool.h>
-#include <stddef.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/ptrace.h>
-#include <sys/types.h>
-#include <sys/user.h>
-
-#include "../utility.h"
-#include "../machine.h"
-
-/* enable to dump memory pointed to by every register */
-#define DUMP_MEMORY_FOR_ALL_REGISTERS 1
-
-#ifdef WITH_VFP
-#ifdef WITH_VFP_D32
-#define NUM_VFP_REGS 32
-#else
-#define NUM_VFP_REGS 16
-#endif
-#endif
-
-static void dump_memory(log_t* log, pid_t tid, uintptr_t addr, int scope_flags) {
-    char code_buffer[64];       /* actual 8+1+((8+1)*4) + 1 == 45 */
-    char ascii_buffer[32];      /* actual 16 + 1 == 17 */
-    uintptr_t p, end;
-
-    p = addr & ~3;
-    p -= 32;
-    if (p > addr) {
-        /* catch underflow */
-        p = 0;
-    }
-    /* Dump more memory content for the crashing thread. */
-    end = p + 256;
-    /* catch overflow; 'end - p' has to be multiples of 16 */
-    while (end < p)
-        end -= 16;
-
-    /* Dump the code around PC as:
-     *  addr     contents                             ascii
-     *  00008d34 ef000000 e8bd0090 e1b00000 512fff1e  ............../Q
-     *  00008d44 ea00b1f9 e92d0090 e3a070fc ef000000  ......-..p......
-     */
-    while (p < end) {
-        char* asc_out = ascii_buffer;
-
-        sprintf(code_buffer, "%08x ", p);
-
-        int i;
-        for (i = 0; i < 4; i++) {
-            /*
-             * If we see (data == -1 && errno != 0), we know that the ptrace
-             * call failed, probably because we're dumping memory in an
-             * unmapped or inaccessible page.  I don't know if there's
-             * value in making that explicit in the output -- it likely
-             * just complicates parsing and clarifies nothing for the
-             * enlightened reader.
-             */
-            long data = ptrace(PTRACE_PEEKTEXT, tid, (void*)p, NULL);
-            sprintf(code_buffer + strlen(code_buffer), "%08lx ", data);
-
-            /* Enable the following code blob to dump ASCII values */
-#if 0
-            int j;
-            for (j = 0; j < 4; j++) {
-                /*
-                 * Our isprint() allows high-ASCII characters that display
-                 * differently (often badly) in different viewers, so we
-                 * just use a simpler test.
-                 */
-                char val = (data >> (j*8)) & 0xff;
-                if (val >= 0x20 && val < 0x7f) {
-                    *asc_out++ = val;
-                } else {
-                    *asc_out++ = '.';
-                }
-            }
-#endif
-            p += 4;
-        }
-        *asc_out = '\0';
-        _LOG(log, scope_flags, "    %s %s\n", code_buffer, ascii_buffer);
-    }
-}
-
-/*
- * If configured to do so, dump memory around *all* registers
- * for the crashing thread.
- */
-void dump_memory_and_code(log_t* log, pid_t tid, int scope_flags) {
-    struct pt_regs regs;
-    if(ptrace(PTRACE_GETREGS, tid, 0, &regs)) {
-        return;
-    }
-
-    if (IS_AT_FAULT(scope_flags) && DUMP_MEMORY_FOR_ALL_REGISTERS) {
-        static const char REG_NAMES[] = "r0r1r2r3r4r5r6r7r8r9slfpipsp";
-
-        for (int reg = 0; reg < 14; reg++) {
-            /* this may not be a valid way to access, but it'll do for now */
-            uintptr_t addr = regs.uregs[reg];
-
-            /*
-             * Don't bother if it looks like a small int or ~= null, or if
-             * it's in the kernel area.
-             */
-            if (addr < 4096 || addr >= 0xc0000000) {
-                continue;
-            }
-
-            _LOG(log, scope_flags | SCOPE_SENSITIVE, "\nmemory near %.2s:\n", &REG_NAMES[reg * 2]);
-            dump_memory(log, tid, addr, scope_flags | SCOPE_SENSITIVE);
-        }
-    }
-
-    /* explicitly allow upload of code dump logging */
-    _LOG(log, scope_flags, "\ncode around pc:\n");
-    dump_memory(log, tid, (uintptr_t)regs.ARM_pc, scope_flags);
-
-    if (regs.ARM_pc != regs.ARM_lr) {
-        _LOG(log, scope_flags, "\ncode around lr:\n");
-        dump_memory(log, tid, (uintptr_t)regs.ARM_lr, scope_flags);
-    }
-}
-
-void dump_registers(log_t* log, pid_t tid, int scope_flags)
-{
-    struct pt_regs r;
-    if(ptrace(PTRACE_GETREGS, tid, 0, &r)) {
-        _LOG(log, scope_flags, "cannot get registers: %s\n", strerror(errno));
-        return;
-    }
-
-    _LOG(log, scope_flags, "    r0 %08x  r1 %08x  r2 %08x  r3 %08x\n",
-            (uint32_t)r.ARM_r0, (uint32_t)r.ARM_r1, (uint32_t)r.ARM_r2, (uint32_t)r.ARM_r3);
-    _LOG(log, scope_flags, "    r4 %08x  r5 %08x  r6 %08x  r7 %08x\n",
-            (uint32_t)r.ARM_r4, (uint32_t)r.ARM_r5, (uint32_t)r.ARM_r6, (uint32_t)r.ARM_r7);
-    _LOG(log, scope_flags, "    r8 %08x  r9 %08x  sl %08x  fp %08x\n",
-            (uint32_t)r.ARM_r8, (uint32_t)r.ARM_r9, (uint32_t)r.ARM_r10, (uint32_t)r.ARM_fp);
-    _LOG(log, scope_flags, "    ip %08x  sp %08x  lr %08x  pc %08x  cpsr %08x\n",
-            (uint32_t)r.ARM_ip, (uint32_t)r.ARM_sp, (uint32_t)r.ARM_lr,
-            (uint32_t)r.ARM_pc, (uint32_t)r.ARM_cpsr);
-
-#ifdef WITH_VFP
-    struct user_vfp vfp_regs;
-    int i;
-
-    if(ptrace(PTRACE_GETVFPREGS, tid, 0, &vfp_regs)) {
-        _LOG(log, scope_flags, "cannot get registers: %s\n", strerror(errno));
-        return;
-    }
-
-    for (i = 0; i < NUM_VFP_REGS; i += 2) {
-        _LOG(log, scope_flags, "    d%-2d %016llx  d%-2d %016llx\n",
-                i, vfp_regs.fpregs[i], i+1, vfp_regs.fpregs[i+1]);
-    }
-    _LOG(log, scope_flags, "    scr %08lx\n", vfp_regs.fpscr);
-#endif
-}
diff --git a/debuggerd/arm/machine.cpp b/debuggerd/arm/machine.cpp
new file mode 100644
index 0000000..3fba6db
--- /dev/null
+++ b/debuggerd/arm/machine.cpp
@@ -0,0 +1,172 @@
+/*
+ *
+ * Copyright 2006, The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <errno.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/ptrace.h>
+#include <sys/types.h>
+#include <sys/user.h>
+
+#include "../utility.h"
+#include "../machine.h"
+
+// enable to dump memory pointed to by every register
+#define DUMP_MEMORY_FOR_ALL_REGISTERS 1
+
+#ifdef WITH_VFP
+#ifdef WITH_VFP_D32
+#define NUM_VFP_REGS 32
+#else
+#define NUM_VFP_REGS 16
+#endif
+#endif
+
+static void dump_memory(log_t* log, pid_t tid, uintptr_t addr, int scope_flags) {
+  char code_buffer[64];       // actual 8+1+((8+1)*4) + 1 == 45
+  char ascii_buffer[32];      // actual 16 + 1 == 17
+  uintptr_t p, end;
+
+  p = addr & ~3;
+  p -= 32;
+  if (p > addr) {
+    // catch underflow
+    p = 0;
+  }
+  // Dump more memory content for the crashing thread.
+  end = p + 256;
+  // catch overflow; 'end - p' has to be multiples of 16
+  while (end < p)
+    end -= 16;
+
+  // Dump the code around PC as:
+  //  addr     contents                             ascii
+  //  00008d34 ef000000 e8bd0090 e1b00000 512fff1e  ............../Q
+  //  00008d44 ea00b1f9 e92d0090 e3a070fc ef000000  ......-..p......
+  while (p < end) {
+    char* asc_out = ascii_buffer;
+
+    sprintf(code_buffer, "%08x ", p);
+
+    int i;
+    for (i = 0; i < 4; i++) {
+      // If we see (data == -1 && errno != 0), we know that the ptrace
+      // call failed, probably because we're dumping memory in an
+      // unmapped or inaccessible page.  I don't know if there's
+      // value in making that explicit in the output -- it likely
+      // just complicates parsing and clarifies nothing for the
+      // enlightened reader.
+      long data = ptrace(PTRACE_PEEKTEXT, tid, reinterpret_cast<void*>(p), NULL);
+      sprintf(code_buffer + strlen(code_buffer), "%08lx ", data);
+
+      // Enable the following code blob to dump ASCII values
+#if 0
+      int j;
+      for (j = 0; j < 4; j++) {
+        // Our isprint() allows high-ASCII characters that display
+        // differently (often badly) in different viewers, so we
+        // just use a simpler test.
+        char val = (data >> (j*8)) & 0xff;
+        if (val >= 0x20 && val < 0x7f) {
+          *asc_out++ = val;
+        } else {
+          *asc_out++ = '.';
+        }
+      }
+#endif
+      p += 4;
+    }
+    *asc_out = '\0';
+    _LOG(log, scope_flags, "    %s %s\n", code_buffer, ascii_buffer);
+  }
+}
+
+// If configured to do so, dump memory around *all* registers
+// for the crashing thread.
+void dump_memory_and_code(log_t* log, pid_t tid, int scope_flags) {
+  struct pt_regs regs;
+  if (ptrace(PTRACE_GETREGS, tid, 0, &regs)) {
+    return;
+  }
+
+  if (IS_AT_FAULT(scope_flags) && DUMP_MEMORY_FOR_ALL_REGISTERS) {
+    static const char REG_NAMES[] = "r0r1r2r3r4r5r6r7r8r9slfpipsp";
+
+    for (int reg = 0; reg < 14; reg++) {
+      // this may not be a valid way to access, but it'll do for now
+      uintptr_t addr = regs.uregs[reg];
+
+      // Don't bother if it looks like a small int or ~= null, or if
+      // it's in the kernel area.
+      if (addr < 4096 || addr >= 0xc0000000) {
+        continue;
+      }
+
+      _LOG(log, scope_flags | SCOPE_SENSITIVE, "\nmemory near %.2s:\n", &REG_NAMES[reg * 2]);
+      dump_memory(log, tid, addr, scope_flags | SCOPE_SENSITIVE);
+    }
+  }
+
+  // explicitly allow upload of code dump logging
+  _LOG(log, scope_flags, "\ncode around pc:\n");
+  dump_memory(log, tid, static_cast<uintptr_t>(regs.ARM_pc), scope_flags);
+
+  if (regs.ARM_pc != regs.ARM_lr) {
+    _LOG(log, scope_flags, "\ncode around lr:\n");
+    dump_memory(log, tid, static_cast<uintptr_t>(regs.ARM_lr), scope_flags);
+  }
+}
+
+void dump_registers(log_t* log, pid_t tid, int scope_flags) {
+  struct pt_regs r;
+  if (ptrace(PTRACE_GETREGS, tid, 0, &r)) {
+    _LOG(log, scope_flags, "cannot get registers: %s\n", strerror(errno));
+    return;
+  }
+
+  _LOG(log, scope_flags, "    r0 %08x  r1 %08x  r2 %08x  r3 %08x\n",
+       static_cast<uint32_t>(r.ARM_r0), static_cast<uint32_t>(r.ARM_r1),
+       static_cast<uint32_t>(r.ARM_r2), static_cast<uint32_t>(r.ARM_r3));
+  _LOG(log, scope_flags, "    r4 %08x  r5 %08x  r6 %08x  r7 %08x\n",
+       static_cast<uint32_t>(r.ARM_r4), static_cast<uint32_t>(r.ARM_r5),
+       static_cast<uint32_t>(r.ARM_r6), static_cast<uint32_t>(r.ARM_r7));
+  _LOG(log, scope_flags, "    r8 %08x  r9 %08x  sl %08x  fp %08x\n",
+       static_cast<uint32_t>(r.ARM_r8), static_cast<uint32_t>(r.ARM_r9),
+       static_cast<uint32_t>(r.ARM_r10), static_cast<uint32_t>(r.ARM_fp));
+  _LOG(log, scope_flags, "    ip %08x  sp %08x  lr %08x  pc %08x  cpsr %08x\n",
+       static_cast<uint32_t>(r.ARM_ip), static_cast<uint32_t>(r.ARM_sp),
+       static_cast<uint32_t>(r.ARM_lr), static_cast<uint32_t>(r.ARM_pc),
+       static_cast<uint32_t>(r.ARM_cpsr));
+
+#ifdef WITH_VFP
+  struct user_vfp vfp_regs;
+  int i;
+
+  if (ptrace(PTRACE_GETVFPREGS, tid, 0, &vfp_regs)) {
+    _LOG(log, scope_flags, "cannot get registers: %s\n", strerror(errno));
+    return;
+  }
+
+  for (i = 0; i < NUM_VFP_REGS; i += 2) {
+    _LOG(log, scope_flags, "    d%-2d %016llx  d%-2d %016llx\n",
+         i, vfp_regs.fpregs[i], i+1, vfp_regs.fpregs[i+1]);
+  }
+  _LOG(log, scope_flags, "    scr %08lx\n", vfp_regs.fpscr);
+#endif
+}
diff --git a/debuggerd/backtrace.c b/debuggerd/backtrace.c
deleted file mode 100644
index aa7a3c2..0000000
--- a/debuggerd/backtrace.c
+++ /dev/null
@@ -1,147 +0,0 @@
-/*
- * Copyright (C) 2012 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <stddef.h>
-#include <stdbool.h>
-#include <stdlib.h>
-#include <string.h>
-#include <stdio.h>
-#include <time.h>
-#include <errno.h>
-#include <limits.h>
-#include <dirent.h>
-#include <unistd.h>
-#include <sys/types.h>
-#include <sys/ptrace.h>
-
-#include <backtrace/backtrace.h>
-
-#include "backtrace.h"
-#include "utility.h"
-
-static void dump_process_header(log_t* log, pid_t pid) {
-    char path[PATH_MAX];
-    char procnamebuf[1024];
-    char* procname = NULL;
-    FILE* fp;
-
-    snprintf(path, sizeof(path), "/proc/%d/cmdline", pid);
-    if ((fp = fopen(path, "r"))) {
-        procname = fgets(procnamebuf, sizeof(procnamebuf), fp);
-        fclose(fp);
-    }
-
-    time_t t = time(NULL);
-    struct tm tm;
-    localtime_r(&t, &tm);
-    char timestr[64];
-    strftime(timestr, sizeof(timestr), "%F %T", &tm);
-    _LOG(log, SCOPE_AT_FAULT, "\n\n----- pid %d at %s -----\n", pid, timestr);
-
-    if (procname) {
-        _LOG(log, SCOPE_AT_FAULT, "Cmd line: %s\n", procname);
-    }
-}
-
-static void dump_process_footer(log_t* log, pid_t pid) {
-    _LOG(log, SCOPE_AT_FAULT, "\n----- end %d -----\n", pid);
-}
-
-static void dump_thread(log_t* log, pid_t tid, bool attached,
-        bool* detach_failed, int* total_sleep_time_usec) {
-    char path[PATH_MAX];
-    char threadnamebuf[1024];
-    char* threadname = NULL;
-    FILE* fp;
-
-    snprintf(path, sizeof(path), "/proc/%d/comm", tid);
-    if ((fp = fopen(path, "r"))) {
-        threadname = fgets(threadnamebuf, sizeof(threadnamebuf), fp);
-        fclose(fp);
-        if (threadname) {
-            size_t len = strlen(threadname);
-            if (len && threadname[len - 1] == '\n') {
-                threadname[len - 1] = '\0';
-            }
-        }
-    }
-
-    _LOG(log, SCOPE_AT_FAULT, "\n\"%s\" sysTid=%d\n",
-            threadname ? threadname : "<unknown>", tid);
-
-    if (!attached && ptrace(PTRACE_ATTACH, tid, 0, 0) < 0) {
-        _LOG(log, SCOPE_AT_FAULT, "Could not attach to thread: %s\n", strerror(errno));
-        return;
-    }
-
-    wait_for_stop(tid, total_sleep_time_usec);
-
-    backtrace_context_t context;
-    if (!backtrace_create_context(&context, tid, -1, 0)) {
-        _LOG(log, SCOPE_AT_FAULT, "Could not create backtrace context.\n");
-    } else {
-        dump_backtrace_to_log(&context, log, SCOPE_AT_FAULT, "  ");
-        backtrace_destroy_context(&context);
-    }
-
-    if (!attached && ptrace(PTRACE_DETACH, tid, 0, 0) != 0) {
-        LOG("ptrace detach from %d failed: %s\n", tid, strerror(errno));
-        *detach_failed = true;
-    }
-}
-
-void dump_backtrace(int fd, int amfd, pid_t pid, pid_t tid, bool* detach_failed,
-        int* total_sleep_time_usec) {
-    log_t log;
-    log.tfd = fd;
-    log.amfd = amfd;
-    log.quiet = true;
-
-    dump_process_header(&log, pid);
-    dump_thread(&log, tid, true, detach_failed, total_sleep_time_usec);
-
-    char task_path[64];
-    snprintf(task_path, sizeof(task_path), "/proc/%d/task", pid);
-    DIR* d = opendir(task_path);
-    if (d != NULL) {
-        struct dirent* de = NULL;
-        while ((de = readdir(d)) != NULL) {
-            if (!strcmp(de->d_name, ".") || !strcmp(de->d_name, "..")) {
-                continue;
-            }
-
-            char* end;
-            pid_t new_tid = strtoul(de->d_name, &end, 10);
-            if (*end || new_tid == tid) {
-                continue;
-            }
-
-            dump_thread(&log, new_tid, false, detach_failed, total_sleep_time_usec);
-        }
-        closedir(d);
-    }
-
-    dump_process_footer(&log, pid);
-}
-
-void dump_backtrace_to_log(const backtrace_context_t* context, log_t* log,
-                           int scope_flags, const char* prefix) {
-    char buf[512];
-    for (size_t i = 0; i < context->backtrace->num_frames; i++) {
-        backtrace_format_frame_data(context, i, buf, sizeof(buf));
-        _LOG(log, scope_flags, "%s%s\n", prefix, buf);
-    }
-}
diff --git a/debuggerd/backtrace.cpp b/debuggerd/backtrace.cpp
new file mode 100644
index 0000000..d388348
--- /dev/null
+++ b/debuggerd/backtrace.cpp
@@ -0,0 +1,141 @@
+/*
+ * Copyright (C) 2012 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <stddef.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+#include <time.h>
+#include <errno.h>
+#include <limits.h>
+#include <dirent.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/ptrace.h>
+
+#include <backtrace/Backtrace.h>
+#include <UniquePtr.h>
+
+#include "backtrace.h"
+#include "utility.h"
+
+static void dump_process_header(log_t* log, pid_t pid) {
+  char path[PATH_MAX];
+  char procnamebuf[1024];
+  char* procname = NULL;
+  FILE* fp;
+
+  snprintf(path, sizeof(path), "/proc/%d/cmdline", pid);
+  if ((fp = fopen(path, "r"))) {
+    procname = fgets(procnamebuf, sizeof(procnamebuf), fp);
+    fclose(fp);
+  }
+
+  time_t t = time(NULL);
+  struct tm tm;
+  localtime_r(&t, &tm);
+  char timestr[64];
+  strftime(timestr, sizeof(timestr), "%F %T", &tm);
+  _LOG(log, SCOPE_AT_FAULT, "\n\n----- pid %d at %s -----\n", pid, timestr);
+
+  if (procname) {
+    _LOG(log, SCOPE_AT_FAULT, "Cmd line: %s\n", procname);
+  }
+}
+
+static void dump_process_footer(log_t* log, pid_t pid) {
+  _LOG(log, SCOPE_AT_FAULT, "\n----- end %d -----\n", pid);
+}
+
+static void dump_thread(
+    log_t* log, pid_t tid, bool attached, bool* detach_failed, int* total_sleep_time_usec) {
+  char path[PATH_MAX];
+  char threadnamebuf[1024];
+  char* threadname = NULL;
+  FILE* fp;
+
+  snprintf(path, sizeof(path), "/proc/%d/comm", tid);
+  if ((fp = fopen(path, "r"))) {
+    threadname = fgets(threadnamebuf, sizeof(threadnamebuf), fp);
+    fclose(fp);
+    if (threadname) {
+      size_t len = strlen(threadname);
+      if (len && threadname[len - 1] == '\n') {
+          threadname[len - 1] = '\0';
+      }
+    }
+  }
+
+  _LOG(log, SCOPE_AT_FAULT, "\n\"%s\" sysTid=%d\n", threadname ? threadname : "<unknown>", tid);
+
+  if (!attached && ptrace(PTRACE_ATTACH, tid, 0, 0) < 0) {
+    _LOG(log, SCOPE_AT_FAULT, "Could not attach to thread: %s\n", strerror(errno));
+    return;
+  }
+
+  wait_for_stop(tid, total_sleep_time_usec);
+
+  UniquePtr<Backtrace> backtrace(Backtrace::Create(tid, BACKTRACE_CURRENT_THREAD));
+  if (backtrace->Unwind(0)) {
+    dump_backtrace_to_log(backtrace.get(), log, SCOPE_AT_FAULT, "  ");
+  }
+
+  if (!attached && ptrace(PTRACE_DETACH, tid, 0, 0) != 0) {
+    LOG("ptrace detach from %d failed: %s\n", tid, strerror(errno));
+    *detach_failed = true;
+  }
+}
+
+void dump_backtrace(int fd, int amfd, pid_t pid, pid_t tid, bool* detach_failed,
+                    int* total_sleep_time_usec) {
+  log_t log;
+  log.tfd = fd;
+  log.amfd = amfd;
+  log.quiet = true;
+
+  dump_process_header(&log, pid);
+  dump_thread(&log, tid, true, detach_failed, total_sleep_time_usec);
+
+  char task_path[64];
+  snprintf(task_path, sizeof(task_path), "/proc/%d/task", pid);
+  DIR* d = opendir(task_path);
+  if (d != NULL) {
+    struct dirent* de = NULL;
+    while ((de = readdir(d)) != NULL) {
+      if (!strcmp(de->d_name, ".") || !strcmp(de->d_name, "..")) {
+        continue;
+      }
+
+      char* end;
+      pid_t new_tid = strtoul(de->d_name, &end, 10);
+      if (*end || new_tid == tid) {
+        continue;
+      }
+
+      dump_thread(&log, new_tid, false, detach_failed, total_sleep_time_usec);
+    }
+    closedir(d);
+  }
+
+  dump_process_footer(&log, pid);
+}
+
+void dump_backtrace_to_log(Backtrace* backtrace, log_t* log,
+                           int scope_flags, const char* prefix) {
+  for (size_t i = 0; i < backtrace->NumFrames(); i++) {
+    _LOG(log, scope_flags, "%s%s\n", prefix, backtrace->FormatFrameData(i).c_str());
+  }
+}
diff --git a/debuggerd/backtrace.h b/debuggerd/backtrace.h
index 54a60b2..2ec8afb 100644
--- a/debuggerd/backtrace.h
+++ b/debuggerd/backtrace.h
@@ -17,21 +17,19 @@
 #ifndef _DEBUGGERD_BACKTRACE_H
 #define _DEBUGGERD_BACKTRACE_H
 
-#include <stddef.h>
-#include <stdbool.h>
 #include <sys/types.h>
 
-#include <backtrace/backtrace.h>
-
 #include "utility.h"
 
-/* Dumps a backtrace using a format similar to what Dalvik uses so that the result
- * can be intermixed in a bug report. */
+class Backtrace;
+
+// Dumps a backtrace using a format similar to what Dalvik uses so that the result
+// can be intermixed in a bug report.
 void dump_backtrace(int fd, int amfd, pid_t pid, pid_t tid, bool* detach_failed,
-        int* total_sleep_time_usec);
+                    int* total_sleep_time_usec);
 
 /* Dumps the backtrace in the backtrace data structure to the log. */
-void dump_backtrace_to_log(const backtrace_context_t* context, log_t* log,
-        int scope_flags, const char* prefix);
+void dump_backtrace_to_log(Backtrace* backtrace, log_t* log,
+                           int scope_flags, const char* prefix);
 
 #endif // _DEBUGGERD_BACKTRACE_H
diff --git a/debuggerd/debuggerd.c b/debuggerd/debuggerd.c
deleted file mode 100644
index 756f7bb..0000000
--- a/debuggerd/debuggerd.c
+++ /dev/null
@@ -1,539 +0,0 @@
-/* system/debuggerd/debuggerd.c
-**
-** Copyright 2006, The Android Open Source Project
-**
-** Licensed under the Apache License, Version 2.0 (the "License");
-** you may not use this file except in compliance with the License.
-** You may obtain a copy of the License at
-**
-**     http://www.apache.org/licenses/LICENSE-2.0
-**
-** Unless required by applicable law or agreed to in writing, software
-** distributed under the License is distributed on an "AS IS" BASIS,
-** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-** See the License for the specific language governing permissions and
-** limitations under the License.
-*/
-
-#include <stdio.h>
-#include <errno.h>
-#include <signal.h>
-#include <pthread.h>
-#include <stdarg.h>
-#include <fcntl.h>
-#include <sys/types.h>
-#include <dirent.h>
-#include <time.h>
-
-#include <sys/ptrace.h>
-#include <sys/wait.h>
-#include <sys/exec_elf.h>
-#include <sys/stat.h>
-#include <sys/poll.h>
-
-#include <log/logd.h>
-#include <log/logger.h>
-
-#include <cutils/sockets.h>
-#include <cutils/properties.h>
-#include <cutils/debugger.h>
-
-#include <corkscrew/backtrace.h>
-
-#include <linux/input.h>
-
-#include <private/android_filesystem_config.h>
-
-#include "backtrace.h"
-#include "getevent.h"
-#include "tombstone.h"
-#include "utility.h"
-
-typedef struct {
-    debugger_action_t action;
-    pid_t pid, tid;
-    uid_t uid, gid;
-    uintptr_t abort_msg_address;
-} debugger_request_t;
-
-static int
-write_string(const char* file, const char* string)
-{
-    int len;
-    int fd;
-    ssize_t amt;
-    fd = open(file, O_RDWR);
-    len = strlen(string);
-    if (fd < 0)
-        return -errno;
-    amt = write(fd, string, len);
-    close(fd);
-    return amt >= 0 ? 0 : -errno;
-}
-
-static
-void init_debug_led(void)
-{
-    // trout leds
-    write_string("/sys/class/leds/red/brightness", "0");
-    write_string("/sys/class/leds/green/brightness", "0");
-    write_string("/sys/class/leds/blue/brightness", "0");
-    write_string("/sys/class/leds/red/device/blink", "0");
-    // sardine leds
-    write_string("/sys/class/leds/left/cadence", "0,0");
-}
-
-static
-void enable_debug_led(void)
-{
-    // trout leds
-    write_string("/sys/class/leds/red/brightness", "255");
-    // sardine leds
-    write_string("/sys/class/leds/left/cadence", "1,0");
-}
-
-static
-void disable_debug_led(void)
-{
-    // trout leds
-    write_string("/sys/class/leds/red/brightness", "0");
-    // sardine leds
-    write_string("/sys/class/leds/left/cadence", "0,0");
-}
-
-static void wait_for_user_action(pid_t pid) {
-    /* First log a helpful message */
-    LOG(    "********************************************************\n"
-            "* Process %d has been suspended while crashing.  To\n"
-            "* attach gdbserver for a gdb connection on port 5039\n"
-            "* and start gdbclient:\n"
-            "*\n"
-            "*     gdbclient app_process :5039 %d\n"
-            "*\n"
-            "* Wait for gdb to start, then press HOME or VOLUME DOWN key\n"
-            "* to let the process continue crashing.\n"
-            "********************************************************\n",
-            pid, pid);
-
-    /* wait for HOME or VOLUME DOWN key */
-    if (init_getevent() == 0) {
-        int ms = 1200 / 10;
-        int dit = 1;
-        int dah = 3*dit;
-        int _       = -dit;
-        int ___     = 3*_;
-        int _______ = 7*_;
-        const signed char codes[] = {
-           dit,_,dit,_,dit,___,dah,_,dah,_,dah,___,dit,_,dit,_,dit,_______
-        };
-        size_t s = 0;
-        struct input_event e;
-        bool done = false;
-        init_debug_led();
-        enable_debug_led();
-        do {
-            int timeout = abs((int)(codes[s])) * ms;
-            int res = get_event(&e, timeout);
-            if (res == 0) {
-                if (e.type == EV_KEY
-                        && (e.code == KEY_HOME || e.code == KEY_VOLUMEDOWN)
-                        && e.value == 0) {
-                    done = true;
-                }
-            } else if (res == 1) {
-                if (++s >= sizeof(codes)/sizeof(*codes))
-                    s = 0;
-                if (codes[s] > 0) {
-                    enable_debug_led();
-                } else {
-                    disable_debug_led();
-                }
-            }
-        } while (!done);
-        uninit_getevent();
-    }
-
-    /* don't forget to turn debug led off */
-    disable_debug_led();
-    LOG("debuggerd resuming process %d", pid);
-}
-
-static int get_process_info(pid_t tid, pid_t* out_pid, uid_t* out_uid, uid_t* out_gid) {
-    char path[64];
-    snprintf(path, sizeof(path), "/proc/%d/status", tid);
-
-    FILE* fp = fopen(path, "r");
-    if (!fp) {
-        return -1;
-    }
-
-    int fields = 0;
-    char line[1024];
-    while (fgets(line, sizeof(line), fp)) {
-        size_t len = strlen(line);
-        if (len > 6 && !memcmp(line, "Tgid:\t", 6)) {
-            *out_pid = atoi(line + 6);
-            fields |= 1;
-        } else if (len > 5 && !memcmp(line, "Uid:\t", 5)) {
-            *out_uid = atoi(line + 5);
-            fields |= 2;
-        } else if (len > 5 && !memcmp(line, "Gid:\t", 5)) {
-            *out_gid = atoi(line + 5);
-            fields |= 4;
-        }
-    }
-    fclose(fp);
-    return fields == 7 ? 0 : -1;
-}
-
-static int read_request(int fd, debugger_request_t* out_request) {
-    struct ucred cr;
-    int len = sizeof(cr);
-    int status = getsockopt(fd, SOL_SOCKET, SO_PEERCRED, &cr, &len);
-    if (status != 0) {
-        LOG("cannot get credentials\n");
-        return -1;
-    }
-
-    XLOG("reading tid\n");
-    fcntl(fd, F_SETFL, O_NONBLOCK);
-
-    struct pollfd pollfds[1];
-    pollfds[0].fd = fd;
-    pollfds[0].events = POLLIN;
-    pollfds[0].revents = 0;
-    status = TEMP_FAILURE_RETRY(poll(pollfds, 1, 3000));
-    if (status != 1) {
-        LOG("timed out reading tid (from pid=%d uid=%d)\n", cr.pid, cr.uid);
-        return -1;
-    }
-
-    debugger_msg_t msg;
-    memset(&msg, 0, sizeof(msg));
-    status = TEMP_FAILURE_RETRY(read(fd, &msg, sizeof(msg)));
-    if (status < 0) {
-        LOG("read failure? %s (pid=%d uid=%d)\n",
-            strerror(errno), cr.pid, cr.uid);
-        return -1;
-    }
-    if (status == sizeof(debugger_msg_t)) {
-        XLOG("crash request of size %d abort_msg_address=%#08x\n", status, msg.abort_msg_address);
-    } else {
-        LOG("invalid crash request of size %d (from pid=%d uid=%d)\n",
-            status, cr.pid, cr.uid);
-        return -1;
-    }
-
-    out_request->action = msg.action;
-    out_request->tid = msg.tid;
-    out_request->pid = cr.pid;
-    out_request->uid = cr.uid;
-    out_request->gid = cr.gid;
-    out_request->abort_msg_address = msg.abort_msg_address;
-
-    if (msg.action == DEBUGGER_ACTION_CRASH) {
-        /* Ensure that the tid reported by the crashing process is valid. */
-        char buf[64];
-        struct stat s;
-        snprintf(buf, sizeof buf, "/proc/%d/task/%d", out_request->pid, out_request->tid);
-        if(stat(buf, &s)) {
-            LOG("tid %d does not exist in pid %d. ignoring debug request\n",
-                    out_request->tid, out_request->pid);
-            return -1;
-        }
-    } else if (cr.uid == 0
-            || (cr.uid == AID_SYSTEM && msg.action == DEBUGGER_ACTION_DUMP_BACKTRACE)) {
-        /* Only root or system can ask us to attach to any process and dump it explicitly.
-         * However, system is only allowed to collect backtraces but cannot dump tombstones. */
-        status = get_process_info(out_request->tid, &out_request->pid,
-                &out_request->uid, &out_request->gid);
-        if (status < 0) {
-            LOG("tid %d does not exist. ignoring explicit dump request\n",
-                    out_request->tid);
-            return -1;
-        }
-    } else {
-        /* No one else is allowed to dump arbitrary processes. */
-        return -1;
-    }
-    return 0;
-}
-
-static bool should_attach_gdb(debugger_request_t* request) {
-    if (request->action == DEBUGGER_ACTION_CRASH) {
-        char value[PROPERTY_VALUE_MAX];
-        property_get("debug.db.uid", value, "-1");
-        int debug_uid = atoi(value);
-        return debug_uid >= 0 && request->uid <= (uid_t)debug_uid;
-    }
-    return false;
-}
-
-static void handle_request(int fd) {
-    XLOG("handle_request(%d)\n", fd);
-
-    debugger_request_t request;
-    memset(&request, 0, sizeof(request));
-    int status = read_request(fd, &request);
-    if (!status) {
-        XLOG("BOOM: pid=%d uid=%d gid=%d tid=%d\n",
-            request.pid, request.uid, request.gid, request.tid);
-
-        /* At this point, the thread that made the request is blocked in
-         * a read() call.  If the thread has crashed, then this gives us
-         * time to PTRACE_ATTACH to it before it has a chance to really fault.
-         *
-         * The PTRACE_ATTACH sends a SIGSTOP to the target process, but it
-         * won't necessarily have stopped by the time ptrace() returns.  (We
-         * currently assume it does.)  We write to the file descriptor to
-         * ensure that it can run as soon as we call PTRACE_CONT below.
-         * See details in bionic/libc/linker/debugger.c, in function
-         * debugger_signal_handler().
-         */
-        if (ptrace(PTRACE_ATTACH, request.tid, 0, 0)) {
-            LOG("ptrace attach failed: %s\n", strerror(errno));
-        } else {
-            bool detach_failed = false;
-            bool attach_gdb = should_attach_gdb(&request);
-            if (TEMP_FAILURE_RETRY(write(fd, "\0", 1)) != 1) {
-                LOG("failed responding to client: %s\n", strerror(errno));
-            } else {
-                char* tombstone_path = NULL;
-
-                if (request.action == DEBUGGER_ACTION_CRASH) {
-                    close(fd);
-                    fd = -1;
-                }
-
-                int total_sleep_time_usec = 0;
-                for (;;) {
-                    int signal = wait_for_signal(request.tid, &total_sleep_time_usec);
-                    if (signal < 0) {
-                        break;
-                    }
-
-                    switch (signal) {
-                    case SIGSTOP:
-                        if (request.action == DEBUGGER_ACTION_DUMP_TOMBSTONE) {
-                            XLOG("stopped -- dumping to tombstone\n");
-                            tombstone_path = engrave_tombstone(request.pid, request.tid,
-                                    signal, request.abort_msg_address, true, true, &detach_failed,
-                                    &total_sleep_time_usec);
-                        } else if (request.action == DEBUGGER_ACTION_DUMP_BACKTRACE) {
-                            XLOG("stopped -- dumping to fd\n");
-                            dump_backtrace(fd, -1,
-                                    request.pid, request.tid, &detach_failed,
-                                    &total_sleep_time_usec);
-                        } else {
-                            XLOG("stopped -- continuing\n");
-                            status = ptrace(PTRACE_CONT, request.tid, 0, 0);
-                            if (status) {
-                                LOG("ptrace continue failed: %s\n", strerror(errno));
-                            }
-                            continue; /* loop again */
-                        }
-                        break;
-
-                    case SIGILL:
-                    case SIGABRT:
-                    case SIGBUS:
-                    case SIGFPE:
-                    case SIGSEGV:
-                    case SIGPIPE:
-#ifdef SIGSTKFLT
-                    case SIGSTKFLT:
-#endif
-                        {
-                        XLOG("stopped -- fatal signal\n");
-                        /*
-                         * Send a SIGSTOP to the process to make all of
-                         * the non-signaled threads stop moving.  Without
-                         * this we get a lot of "ptrace detach failed:
-                         * No such process".
-                         */
-                        kill(request.pid, SIGSTOP);
-                        /* don't dump sibling threads when attaching to GDB because it
-                         * makes the process less reliable, apparently... */
-                        tombstone_path = engrave_tombstone(request.pid, request.tid,
-                                signal, request.abort_msg_address, !attach_gdb, false,
-                                &detach_failed, &total_sleep_time_usec);
-                        break;
-                    }
-
-                    default:
-                        XLOG("stopped -- unexpected signal\n");
-                        LOG("process stopped due to unexpected signal %d\n", signal);
-                        break;
-                    }
-                    break;
-                }
-
-                if (request.action == DEBUGGER_ACTION_DUMP_TOMBSTONE) {
-                    if (tombstone_path) {
-                        write(fd, tombstone_path, strlen(tombstone_path));
-                    }
-                    close(fd);
-                    fd = -1;
-                }
-                free(tombstone_path);
-            }
-
-            XLOG("detaching\n");
-            if (attach_gdb) {
-                /* stop the process so we can debug */
-                kill(request.pid, SIGSTOP);
-
-                /* detach so we can attach gdbserver */
-                if (ptrace(PTRACE_DETACH, request.tid, 0, 0)) {
-                    LOG("ptrace detach from %d failed: %s\n", request.tid, strerror(errno));
-                    detach_failed = true;
-                }
-
-                /*
-                 * if debug.db.uid is set, its value indicates if we should wait
-                 * for user action for the crashing process.
-                 * in this case, we log a message and turn the debug LED on
-                 * waiting for a gdb connection (for instance)
-                 */
-                wait_for_user_action(request.pid);
-            } else {
-                /* just detach */
-                if (ptrace(PTRACE_DETACH, request.tid, 0, 0)) {
-                    LOG("ptrace detach from %d failed: %s\n", request.tid, strerror(errno));
-                    detach_failed = true;
-                }
-            }
-
-            /* resume stopped process (so it can crash in peace). */
-            kill(request.pid, SIGCONT);
-
-            /* If we didn't successfully detach, we're still the parent, and the
-             * actual parent won't receive a death notification via wait(2).  At this point
-             * there's not much we can do about that. */
-            if (detach_failed) {
-                LOG("debuggerd committing suicide to free the zombie!\n");
-                kill(getpid(), SIGKILL);
-            }
-        }
-
-    }
-    if (fd >= 0) {
-        close(fd);
-    }
-}
-
-static int do_server() {
-    int s;
-    struct sigaction act;
-    int logsocket = -1;
-
-    /*
-     * debuggerd crashes can't be reported to debuggerd.  Reset all of the
-     * crash handlers.
-     */
-    signal(SIGILL, SIG_DFL);
-    signal(SIGABRT, SIG_DFL);
-    signal(SIGBUS, SIG_DFL);
-    signal(SIGFPE, SIG_DFL);
-    signal(SIGSEGV, SIG_DFL);
-#ifdef SIGSTKFLT
-    signal(SIGSTKFLT, SIG_DFL);
-#endif
-
-    // Ignore failed writes to closed sockets
-    signal(SIGPIPE, SIG_IGN);
-
-    logsocket = socket_local_client("logd",
-            ANDROID_SOCKET_NAMESPACE_ABSTRACT, SOCK_DGRAM);
-    if(logsocket < 0) {
-        logsocket = -1;
-    } else {
-        fcntl(logsocket, F_SETFD, FD_CLOEXEC);
-    }
-
-    act.sa_handler = SIG_DFL;
-    sigemptyset(&act.sa_mask);
-    sigaddset(&act.sa_mask,SIGCHLD);
-    act.sa_flags = SA_NOCLDWAIT;
-    sigaction(SIGCHLD, &act, 0);
-
-    s = socket_local_server(DEBUGGER_SOCKET_NAME,
-            ANDROID_SOCKET_NAMESPACE_ABSTRACT, SOCK_STREAM);
-    if(s < 0) return 1;
-    fcntl(s, F_SETFD, FD_CLOEXEC);
-
-    LOG("debuggerd: " __DATE__ " " __TIME__ "\n");
-
-    for(;;) {
-        struct sockaddr addr;
-        socklen_t alen;
-        int fd;
-
-        alen = sizeof(addr);
-        XLOG("waiting for connection\n");
-        fd = accept(s, &addr, &alen);
-        if(fd < 0) {
-            XLOG("accept failed: %s\n", strerror(errno));
-            continue;
-        }
-
-        fcntl(fd, F_SETFD, FD_CLOEXEC);
-
-        handle_request(fd);
-    }
-    return 0;
-}
-
-static int do_explicit_dump(pid_t tid, bool dump_backtrace) {
-    fprintf(stdout, "Sending request to dump task %d.\n", tid);
-
-    if (dump_backtrace) {
-        fflush(stdout);
-        if (dump_backtrace_to_file(tid, fileno(stdout)) < 0) {
-            fputs("Error dumping backtrace.\n", stderr);
-            return 1;
-        }
-    } else {
-        char tombstone_path[PATH_MAX];
-        if (dump_tombstone(tid, tombstone_path, sizeof(tombstone_path)) < 0) {
-            fputs("Error dumping tombstone.\n", stderr);
-            return 1;
-        }
-        fprintf(stderr, "Tombstone written to: %s\n", tombstone_path);
-    }
-    return 0;
-}
-
-static void usage() {
-    fputs("Usage: -b [<tid>]\n"
-            "  -b dump backtrace to console, otherwise dump full tombstone file\n"
-            "\n"
-            "If tid specified, sends a request to debuggerd to dump that task.\n"
-            "Otherwise, starts the debuggerd server.\n", stderr);
-}
-
-int main(int argc, char** argv) {
-    if (argc == 1) {
-        return do_server();
-    }
-
-    bool dump_backtrace = false;
-    bool have_tid = false;
-    pid_t tid = 0;
-    for (int i = 1; i < argc; i++) {
-        if (!strcmp(argv[i], "-b")) {
-            dump_backtrace = true;
-        } else if (!have_tid) {
-            tid = atoi(argv[i]);
-            have_tid = true;
-        } else {
-            usage();
-            return 1;
-        }
-    }
-    if (!have_tid) {
-        usage();
-        return 1;
-    }
-    return do_explicit_dump(tid, dump_backtrace);
-}
diff --git a/debuggerd/debuggerd.cpp b/debuggerd/debuggerd.cpp
new file mode 100644
index 0000000..de8ba9d
--- /dev/null
+++ b/debuggerd/debuggerd.cpp
@@ -0,0 +1,514 @@
+/*
+ * Copyright 2006, The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <stdio.h>
+#include <errno.h>
+#include <signal.h>
+#include <pthread.h>
+#include <stdarg.h>
+#include <fcntl.h>
+#include <sys/types.h>
+#include <dirent.h>
+#include <time.h>
+
+#include <sys/ptrace.h>
+#include <sys/wait.h>
+#include <elf.h>
+#include <sys/stat.h>
+#include <sys/poll.h>
+
+#include <log/logd.h>
+#include <log/logger.h>
+
+#include <cutils/sockets.h>
+#include <cutils/properties.h>
+#include <cutils/debugger.h>
+
+#include <linux/input.h>
+
+#include <private/android_filesystem_config.h>
+
+#include "backtrace.h"
+#include "getevent.h"
+#include "tombstone.h"
+#include "utility.h"
+
+typedef struct {
+  debugger_action_t action;
+  pid_t pid, tid;
+  uid_t uid, gid;
+  uintptr_t abort_msg_address;
+} debugger_request_t;
+
+static int write_string(const char* file, const char* string) {
+  int len;
+  int fd;
+  ssize_t amt;
+  fd = open(file, O_RDWR);
+  len = strlen(string);
+  if (fd < 0)
+    return -errno;
+  amt = write(fd, string, len);
+  close(fd);
+  return amt >= 0 ? 0 : -errno;
+}
+
+static void init_debug_led() {
+  // trout leds
+  write_string("/sys/class/leds/red/brightness", "0");
+  write_string("/sys/class/leds/green/brightness", "0");
+  write_string("/sys/class/leds/blue/brightness", "0");
+  write_string("/sys/class/leds/red/device/blink", "0");
+  // sardine leds
+  write_string("/sys/class/leds/left/cadence", "0,0");
+}
+
+static void enable_debug_led() {
+  // trout leds
+  write_string("/sys/class/leds/red/brightness", "255");
+  // sardine leds
+  write_string("/sys/class/leds/left/cadence", "1,0");
+}
+
+static void disable_debug_led() {
+  // trout leds
+  write_string("/sys/class/leds/red/brightness", "0");
+  // sardine leds
+  write_string("/sys/class/leds/left/cadence", "0,0");
+}
+
+static void wait_for_user_action(pid_t pid) {
+  // First log a helpful message
+  LOG(    "********************************************************\n"
+          "* Process %d has been suspended while crashing.  To\n"
+          "* attach gdbserver for a gdb connection on port 5039\n"
+          "* and start gdbclient:\n"
+          "*\n"
+          "*     gdbclient app_process :5039 %d\n"
+          "*\n"
+          "* Wait for gdb to start, then press HOME or VOLUME DOWN key\n"
+          "* to let the process continue crashing.\n"
+          "********************************************************\n",
+          pid, pid);
+
+  // wait for HOME or VOLUME DOWN key
+  if (init_getevent() == 0) {
+    int ms = 1200 / 10;
+    int dit = 1;
+    int dah = 3*dit;
+    int _       = -dit;
+    int ___     = 3*_;
+    int _______ = 7*_;
+    const int codes[] = {
+      dit,_,dit,_,dit,___,dah,_,dah,_,dah,___,dit,_,dit,_,dit,_______
+    };
+    size_t s = 0;
+    struct input_event e;
+    bool done = false;
+    init_debug_led();
+    enable_debug_led();
+    do {
+      int timeout = abs(codes[s]) * ms;
+      int res = get_event(&e, timeout);
+      if (res == 0) {
+        if (e.type == EV_KEY
+            && (e.code == KEY_HOME || e.code == KEY_VOLUMEDOWN)
+            && e.value == 0) {
+          done = true;
+        }
+      } else if (res == 1) {
+        if (++s >= sizeof(codes)/sizeof(*codes))
+          s = 0;
+        if (codes[s] > 0) {
+          enable_debug_led();
+        } else {
+          disable_debug_led();
+        }
+      }
+    } while (!done);
+    uninit_getevent();
+  }
+
+  // don't forget to turn debug led off
+  disable_debug_led();
+  LOG("debuggerd resuming process %d", pid);
+}
+
+static int get_process_info(pid_t tid, pid_t* out_pid, uid_t* out_uid, uid_t* out_gid) {
+  char path[64];
+  snprintf(path, sizeof(path), "/proc/%d/status", tid);
+
+  FILE* fp = fopen(path, "r");
+  if (!fp) {
+    return -1;
+  }
+
+  int fields = 0;
+  char line[1024];
+  while (fgets(line, sizeof(line), fp)) {
+    size_t len = strlen(line);
+    if (len > 6 && !memcmp(line, "Tgid:\t", 6)) {
+      *out_pid = atoi(line + 6);
+      fields |= 1;
+    } else if (len > 5 && !memcmp(line, "Uid:\t", 5)) {
+      *out_uid = atoi(line + 5);
+      fields |= 2;
+    } else if (len > 5 && !memcmp(line, "Gid:\t", 5)) {
+      *out_gid = atoi(line + 5);
+      fields |= 4;
+    }
+  }
+  fclose(fp);
+  return fields == 7 ? 0 : -1;
+}
+
+static int read_request(int fd, debugger_request_t* out_request) {
+  struct ucred cr;
+  int len = sizeof(cr);
+  int status = getsockopt(fd, SOL_SOCKET, SO_PEERCRED, &cr, &len);
+  if (status != 0) {
+    LOG("cannot get credentials\n");
+    return -1;
+  }
+
+  XLOG("reading tid\n");
+  fcntl(fd, F_SETFL, O_NONBLOCK);
+
+  struct pollfd pollfds[1];
+  pollfds[0].fd = fd;
+  pollfds[0].events = POLLIN;
+  pollfds[0].revents = 0;
+  status = TEMP_FAILURE_RETRY(poll(pollfds, 1, 3000));
+  if (status != 1) {
+    LOG("timed out reading tid (from pid=%d uid=%d)\n", cr.pid, cr.uid);
+    return -1;
+  }
+
+  debugger_msg_t msg;
+  memset(&msg, 0, sizeof(msg));
+  status = TEMP_FAILURE_RETRY(read(fd, &msg, sizeof(msg)));
+  if (status < 0) {
+    LOG("read failure? %s (pid=%d uid=%d)\n", strerror(errno), cr.pid, cr.uid);
+    return -1;
+  }
+  if (status == sizeof(debugger_msg_t)) {
+    XLOG("crash request of size %d abort_msg_address=%#08x\n", status, msg.abort_msg_address);
+  } else {
+    LOG("invalid crash request of size %d (from pid=%d uid=%d)\n", status, cr.pid, cr.uid);
+    return -1;
+  }
+
+  out_request->action = msg.action;
+  out_request->tid = msg.tid;
+  out_request->pid = cr.pid;
+  out_request->uid = cr.uid;
+  out_request->gid = cr.gid;
+  out_request->abort_msg_address = msg.abort_msg_address;
+
+  if (msg.action == DEBUGGER_ACTION_CRASH) {
+    // Ensure that the tid reported by the crashing process is valid.
+    char buf[64];
+    struct stat s;
+    snprintf(buf, sizeof buf, "/proc/%d/task/%d", out_request->pid, out_request->tid);
+    if (stat(buf, &s)) {
+      LOG("tid %d does not exist in pid %d. ignoring debug request\n",
+          out_request->tid, out_request->pid);
+      return -1;
+    }
+  } else if (cr.uid == 0
+            || (cr.uid == AID_SYSTEM && msg.action == DEBUGGER_ACTION_DUMP_BACKTRACE)) {
+    // Only root or system can ask us to attach to any process and dump it explicitly.
+    // However, system is only allowed to collect backtraces but cannot dump tombstones.
+    status = get_process_info(out_request->tid, &out_request->pid,
+                              &out_request->uid, &out_request->gid);
+    if (status < 0) {
+      LOG("tid %d does not exist. ignoring explicit dump request\n", out_request->tid);
+      return -1;
+    }
+  } else {
+    // No one else is allowed to dump arbitrary processes.
+    return -1;
+  }
+  return 0;
+}
+
+static bool should_attach_gdb(debugger_request_t* request) {
+  if (request->action == DEBUGGER_ACTION_CRASH) {
+    char value[PROPERTY_VALUE_MAX];
+    property_get("debug.db.uid", value, "-1");
+    int debug_uid = atoi(value);
+    return debug_uid >= 0 && request->uid <= (uid_t)debug_uid;
+  }
+  return false;
+}
+
+static void handle_request(int fd) {
+  XLOG("handle_request(%d)\n", fd);
+
+  debugger_request_t request;
+  memset(&request, 0, sizeof(request));
+  int status = read_request(fd, &request);
+  if (!status) {
+    XLOG("BOOM: pid=%d uid=%d gid=%d tid=%d\n",
+         request.pid, request.uid, request.gid, request.tid);
+
+    // At this point, the thread that made the request is blocked in
+    // a read() call.  If the thread has crashed, then this gives us
+    // time to PTRACE_ATTACH to it before it has a chance to really fault.
+    //
+    // The PTRACE_ATTACH sends a SIGSTOP to the target process, but it
+    // won't necessarily have stopped by the time ptrace() returns.  (We
+    // currently assume it does.)  We write to the file descriptor to
+    // ensure that it can run as soon as we call PTRACE_CONT below.
+    // See details in bionic/libc/linker/debugger.c, in function
+    // debugger_signal_handler().
+    if (ptrace(PTRACE_ATTACH, request.tid, 0, 0)) {
+      LOG("ptrace attach failed: %s\n", strerror(errno));
+    } else {
+      bool detach_failed = false;
+      bool attach_gdb = should_attach_gdb(&request);
+      if (TEMP_FAILURE_RETRY(write(fd, "\0", 1)) != 1) {
+        LOG("failed responding to client: %s\n", strerror(errno));
+      } else {
+        char* tombstone_path = NULL;
+
+        if (request.action == DEBUGGER_ACTION_CRASH) {
+          close(fd);
+          fd = -1;
+        }
+
+        int total_sleep_time_usec = 0;
+        for (;;) {
+          int signal = wait_for_signal(request.tid, &total_sleep_time_usec);
+          if (signal < 0) {
+            break;
+          }
+
+          switch (signal) {
+            case SIGSTOP:
+              if (request.action == DEBUGGER_ACTION_DUMP_TOMBSTONE) {
+                XLOG("stopped -- dumping to tombstone\n");
+                tombstone_path = engrave_tombstone(
+                    request.pid, request.tid, signal, request.abort_msg_address, true, true,
+                    &detach_failed, &total_sleep_time_usec);
+              } else if (request.action == DEBUGGER_ACTION_DUMP_BACKTRACE) {
+                XLOG("stopped -- dumping to fd\n");
+                dump_backtrace(fd, -1, request.pid, request.tid, &detach_failed,
+                               &total_sleep_time_usec);
+              } else {
+                XLOG("stopped -- continuing\n");
+                status = ptrace(PTRACE_CONT, request.tid, 0, 0);
+                if (status) {
+                  LOG("ptrace continue failed: %s\n", strerror(errno));
+                }
+                continue; // loop again
+              }
+              break;
+
+            case SIGILL:
+            case SIGABRT:
+            case SIGBUS:
+            case SIGFPE:
+            case SIGSEGV:
+            case SIGPIPE:
+#ifdef SIGSTKFLT
+            case SIGSTKFLT:
+#endif
+              XLOG("stopped -- fatal signal\n");
+              // Send a SIGSTOP to the process to make all of
+              // the non-signaled threads stop moving.  Without
+              // this we get a lot of "ptrace detach failed:
+              // No such process".
+              kill(request.pid, SIGSTOP);
+              // don't dump sibling threads when attaching to GDB because it
+              // makes the process less reliable, apparently...
+              tombstone_path = engrave_tombstone(
+                  request.pid, request.tid, signal, request.abort_msg_address, !attach_gdb,
+                  false, &detach_failed, &total_sleep_time_usec);
+              break;
+
+            default:
+              XLOG("stopped -- unexpected signal\n");
+              LOG("process stopped due to unexpected signal %d\n", signal);
+              break;
+          }
+          break;
+        }
+
+        if (request.action == DEBUGGER_ACTION_DUMP_TOMBSTONE) {
+          if (tombstone_path) {
+            write(fd, tombstone_path, strlen(tombstone_path));
+          }
+          close(fd);
+          fd = -1;
+        }
+        free(tombstone_path);
+      }
+
+      XLOG("detaching\n");
+      if (attach_gdb) {
+        // stop the process so we can debug
+        kill(request.pid, SIGSTOP);
+
+        // detach so we can attach gdbserver
+        if (ptrace(PTRACE_DETACH, request.tid, 0, 0)) {
+          LOG("ptrace detach from %d failed: %s\n", request.tid, strerror(errno));
+          detach_failed = true;
+        }
+
+        // if debug.db.uid is set, its value indicates if we should wait
+        // for user action for the crashing process.
+        // in this case, we log a message and turn the debug LED on
+        // waiting for a gdb connection (for instance)
+        wait_for_user_action(request.pid);
+      } else {
+        // just detach
+        if (ptrace(PTRACE_DETACH, request.tid, 0, 0)) {
+          LOG("ptrace detach from %d failed: %s\n", request.tid, strerror(errno));
+          detach_failed = true;
+        }
+      }
+
+      // resume stopped process (so it can crash in peace).
+      kill(request.pid, SIGCONT);
+
+      // If we didn't successfully detach, we're still the parent, and the
+      // actual parent won't receive a death notification via wait(2).  At this point
+      // there's not much we can do about that.
+      if (detach_failed) {
+        LOG("debuggerd committing suicide to free the zombie!\n");
+        kill(getpid(), SIGKILL);
+      }
+    }
+
+  }
+  if (fd >= 0) {
+    close(fd);
+  }
+}
+
+static int do_server() {
+  int s;
+  struct sigaction act;
+  int logsocket = -1;
+
+  // debuggerd crashes can't be reported to debuggerd.  Reset all of the
+  // crash handlers.
+  signal(SIGILL, SIG_DFL);
+  signal(SIGABRT, SIG_DFL);
+  signal(SIGBUS, SIG_DFL);
+  signal(SIGFPE, SIG_DFL);
+  signal(SIGSEGV, SIG_DFL);
+#ifdef SIGSTKFLT
+  signal(SIGSTKFLT, SIG_DFL);
+#endif
+
+  // Ignore failed writes to closed sockets
+  signal(SIGPIPE, SIG_IGN);
+
+  logsocket = socket_local_client("logd", ANDROID_SOCKET_NAMESPACE_ABSTRACT, SOCK_DGRAM);
+  if (logsocket < 0) {
+    logsocket = -1;
+  } else {
+    fcntl(logsocket, F_SETFD, FD_CLOEXEC);
+  }
+
+  act.sa_handler = SIG_DFL;
+  sigemptyset(&act.sa_mask);
+  sigaddset(&act.sa_mask,SIGCHLD);
+  act.sa_flags = SA_NOCLDWAIT;
+  sigaction(SIGCHLD, &act, 0);
+
+  s = socket_local_server(DEBUGGER_SOCKET_NAME, ANDROID_SOCKET_NAMESPACE_ABSTRACT, SOCK_STREAM);
+  if (s < 0)
+    return 1;
+  fcntl(s, F_SETFD, FD_CLOEXEC);
+
+  LOG("debuggerd: " __DATE__ " " __TIME__ "\n");
+
+  for (;;) {
+    struct sockaddr addr;
+    socklen_t alen;
+    int fd;
+
+    alen = sizeof(addr);
+    XLOG("waiting for connection\n");
+    fd = accept(s, &addr, &alen);
+    if (fd < 0) {
+      XLOG("accept failed: %s\n", strerror(errno));
+      continue;
+    }
+
+    fcntl(fd, F_SETFD, FD_CLOEXEC);
+
+    handle_request(fd);
+  }
+  return 0;
+}
+
+static int do_explicit_dump(pid_t tid, bool dump_backtrace) {
+  fprintf(stdout, "Sending request to dump task %d.\n", tid);
+
+  if (dump_backtrace) {
+    fflush(stdout);
+    if (dump_backtrace_to_file(tid, fileno(stdout)) < 0) {
+      fputs("Error dumping backtrace.\n", stderr);
+      return 1;
+    }
+  } else {
+    char tombstone_path[PATH_MAX];
+    if (dump_tombstone(tid, tombstone_path, sizeof(tombstone_path)) < 0) {
+      fputs("Error dumping tombstone.\n", stderr);
+      return 1;
+    }
+    fprintf(stderr, "Tombstone written to: %s\n", tombstone_path);
+  }
+  return 0;
+}
+
+static void usage() {
+  fputs("Usage: -b [<tid>]\n"
+        "  -b dump backtrace to console, otherwise dump full tombstone file\n"
+        "\n"
+        "If tid specified, sends a request to debuggerd to dump that task.\n"
+        "Otherwise, starts the debuggerd server.\n", stderr);
+}
+
+int main(int argc, char** argv) {
+  if (argc == 1) {
+    return do_server();
+  }
+
+  bool dump_backtrace = false;
+  bool have_tid = false;
+  pid_t tid = 0;
+  for (int i = 1; i < argc; i++) {
+    if (!strcmp(argv[i], "-b")) {
+      dump_backtrace = true;
+    } else if (!have_tid) {
+      tid = atoi(argv[i]);
+      have_tid = true;
+    } else {
+      usage();
+      return 1;
+    }
+  }
+  if (!have_tid) {
+    usage();
+    return 1;
+  }
+  return do_explicit_dump(tid, dump_backtrace);
+}
diff --git a/debuggerd/getevent.c b/debuggerd/getevent.c
deleted file mode 100644
index ebd070c..0000000
--- a/debuggerd/getevent.c
+++ /dev/null
@@ -1,219 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <stdint.h>
-#include <dirent.h>
-#include <fcntl.h>
-#include <sys/ioctl.h>
-#include <sys/inotify.h>
-#include <sys/limits.h>
-#include <sys/poll.h>
-#include <linux/input.h>
-#include <errno.h>
-#include <cutils/log.h>
-
-static struct pollfd *ufds;
-static char **device_names;
-static int nfds;
-
-static int open_device(const char *device)
-{
-    int version;
-    int fd;
-    struct pollfd *new_ufds;
-    char **new_device_names;
-    char name[80];
-    char location[80];
-    char idstr[80];
-    struct input_id id;
-
-    fd = open(device, O_RDWR);
-    if(fd < 0) {
-        return -1;
-    }
-    
-    if(ioctl(fd, EVIOCGVERSION, &version)) {
-        return -1;
-    }
-    if(ioctl(fd, EVIOCGID, &id)) {
-        return -1;
-    }
-    name[sizeof(name) - 1] = '\0';
-    location[sizeof(location) - 1] = '\0';
-    idstr[sizeof(idstr) - 1] = '\0';
-    if(ioctl(fd, EVIOCGNAME(sizeof(name) - 1), &name) < 1) {
-        //fprintf(stderr, "could not get device name for %s, %s\n", device, strerror(errno));
-        name[0] = '\0';
-    }
-    if(ioctl(fd, EVIOCGPHYS(sizeof(location) - 1), &location) < 1) {
-        //fprintf(stderr, "could not get location for %s, %s\n", device, strerror(errno));
-        location[0] = '\0';
-    }
-    if(ioctl(fd, EVIOCGUNIQ(sizeof(idstr) - 1), &idstr) < 1) {
-        //fprintf(stderr, "could not get idstring for %s, %s\n", device, strerror(errno));
-        idstr[0] = '\0';
-    }
-
-    new_ufds = realloc(ufds, sizeof(ufds[0]) * (nfds + 1));
-    if(new_ufds == NULL) {
-        fprintf(stderr, "out of memory\n");
-        return -1;
-    }
-    ufds = new_ufds;
-    new_device_names = realloc(device_names, sizeof(device_names[0]) * (nfds + 1));
-    if(new_device_names == NULL) {
-        fprintf(stderr, "out of memory\n");
-        return -1;
-    }
-    device_names = new_device_names;
-    ufds[nfds].fd = fd;
-    ufds[nfds].events = POLLIN;
-    device_names[nfds] = strdup(device);
-    nfds++;
-
-    return 0;
-}
-
-int close_device(const char *device)
-{
-    int i;
-    for(i = 1; i < nfds; i++) {
-        if(strcmp(device_names[i], device) == 0) {
-            int count = nfds - i - 1;
-            free(device_names[i]);
-            memmove(device_names + i, device_names + i + 1, sizeof(device_names[0]) * count);
-            memmove(ufds + i, ufds + i + 1, sizeof(ufds[0]) * count);
-            nfds--;
-            return 0;
-        }
-    }
-    return -1;
-}
-
-static int read_notify(const char *dirname, int nfd)
-{
-    int res;
-    char devname[PATH_MAX];
-    char *filename;
-    char event_buf[512];
-    int event_size;
-    int event_pos = 0;
-    struct inotify_event *event;
-
-    res = read(nfd, event_buf, sizeof(event_buf));
-    if(res < (int)sizeof(*event)) {
-        if(errno == EINTR)
-            return 0;
-        fprintf(stderr, "could not get event, %s\n", strerror(errno));
-        return 1;
-    }
-    //printf("got %d bytes of event information\n", res);
-
-    strcpy(devname, dirname);
-    filename = devname + strlen(devname);
-    *filename++ = '/';
-
-    while(res >= (int)sizeof(*event)) {
-        event = (struct inotify_event *)(event_buf + event_pos);
-        //printf("%d: %08x \"%s\"\n", event->wd, event->mask, event->len ? event->name : "");
-        if(event->len) {
-            strcpy(filename, event->name);
-            if(event->mask & IN_CREATE) {
-                open_device(devname);
-            }
-            else {
-                close_device(devname);
-            }
-        }
-        event_size = sizeof(*event) + event->len;
-        res -= event_size;
-        event_pos += event_size;
-    }
-    return 0;
-}
-
-static int scan_dir(const char *dirname)
-{
-    char devname[PATH_MAX];
-    char *filename;
-    DIR *dir;
-    struct dirent *de;
-    dir = opendir(dirname);
-    if(dir == NULL)
-        return -1;
-    strcpy(devname, dirname);
-    filename = devname + strlen(devname);
-    *filename++ = '/';
-    while((de = readdir(dir))) {
-        if(de->d_name[0] == '.' &&
-           (de->d_name[1] == '\0' ||
-            (de->d_name[1] == '.' && de->d_name[2] == '\0')))
-            continue;
-        strcpy(filename, de->d_name);
-        open_device(devname);
-    }
-    closedir(dir);
-    return 0;
-}
-
-int init_getevent()
-{
-    int res;
-    const char *device_path = "/dev/input";
-
-    nfds = 1;
-    ufds = calloc(1, sizeof(ufds[0]));
-    ufds[0].fd = inotify_init();
-    ufds[0].events = POLLIN;
-
-	res = inotify_add_watch(ufds[0].fd, device_path, IN_DELETE | IN_CREATE);
-    if(res < 0) {
-        return 1;
-    }
-    res = scan_dir(device_path);
-    if(res < 0) {
-        return 1;
-    }
-    return 0;
-}
-
-void uninit_getevent()
-{
-    int i;
-    for(i = 0; i < nfds; i++) {
-        close(ufds[i].fd);
-    }
-    free(ufds);
-    ufds = 0;
-    nfds = 0;
-}
-
-int get_event(struct input_event* event, int timeout)
-{
-    int res;
-    int i;
-    int pollres;
-    const char *device_path = "/dev/input";
-    while(1) {
-        pollres = poll(ufds, nfds, timeout);
-        if (pollres == 0) {
-            return 1;
-        }
-        if(ufds[0].revents & POLLIN) {
-            read_notify(device_path, ufds[0].fd);
-        }
-        for(i = 1; i < nfds; i++) {
-            if(ufds[i].revents) {
-                if(ufds[i].revents & POLLIN) {
-                    res = read(ufds[i].fd, event, sizeof(*event));
-                    if(res < (int)sizeof(event)) {
-                        fprintf(stderr, "could not get event\n");
-                        return -1;
-                    }
-                    return 0;
-                }
-            }
-        }
-    }
-    return 0;
-}
diff --git a/debuggerd/getevent.cpp b/debuggerd/getevent.cpp
new file mode 100644
index 0000000..751c4fb
--- /dev/null
+++ b/debuggerd/getevent.cpp
@@ -0,0 +1,222 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdint.h>
+#include <dirent.h>
+#include <fcntl.h>
+#include <sys/ioctl.h>
+#include <sys/inotify.h>
+#include <sys/limits.h>
+#include <sys/poll.h>
+#include <linux/input.h>
+#include <errno.h>
+#include <cutils/log.h>
+
+static struct pollfd* ufds;
+static char** device_names;
+static int nfds;
+
+static int open_device(const char* device) {
+  int version;
+  int fd;
+  struct pollfd* new_ufds;
+  char** new_device_names;
+  char name[80];
+  char location[80];
+  char idstr[80];
+  struct input_id id;
+
+  fd = open(device, O_RDWR);
+  if (fd < 0) {
+    return -1;
+  }
+
+  if (ioctl(fd, EVIOCGVERSION, &version)) {
+    return -1;
+  }
+  if (ioctl(fd, EVIOCGID, &id)) {
+    return -1;
+  }
+  name[sizeof(name) - 1] = '\0';
+  location[sizeof(location) - 1] = '\0';
+  idstr[sizeof(idstr) - 1] = '\0';
+  if (ioctl(fd, EVIOCGNAME(sizeof(name) - 1), &name) < 1) {
+    name[0] = '\0';
+  }
+  if (ioctl(fd, EVIOCGPHYS(sizeof(location) - 1), &location) < 1) {
+    location[0] = '\0';
+  }
+  if (ioctl(fd, EVIOCGUNIQ(sizeof(idstr) - 1), &idstr) < 1) {
+    idstr[0] = '\0';
+  }
+
+  new_ufds = reinterpret_cast<pollfd*>(realloc(ufds, sizeof(ufds[0]) * (nfds + 1)));
+  if (new_ufds == NULL) {
+    fprintf(stderr, "out of memory\n");
+    return -1;
+  }
+  ufds = new_ufds;
+  new_device_names = reinterpret_cast<char**>(realloc(
+      device_names, sizeof(device_names[0]) * (nfds + 1)));
+  if (new_device_names == NULL) {
+    fprintf(stderr, "out of memory\n");
+    return -1;
+  }
+  device_names = new_device_names;
+  ufds[nfds].fd = fd;
+  ufds[nfds].events = POLLIN;
+  device_names[nfds] = strdup(device);
+  nfds++;
+
+  return 0;
+}
+
+int close_device(const char* device) {
+  int i;
+  for (i = 1; i < nfds; i++) {
+    if (strcmp(device_names[i], device) == 0) {
+      int count = nfds - i - 1;
+      free(device_names[i]);
+      memmove(device_names + i, device_names + i + 1, sizeof(device_names[0]) * count);
+      memmove(ufds + i, ufds + i + 1, sizeof(ufds[0]) * count);
+      nfds--;
+      return 0;
+    }
+  }
+  return -1;
+}
+
+static int read_notify(const char* dirname, int nfd) {
+  int res;
+  char devname[PATH_MAX];
+  char* filename;
+  char event_buf[512];
+  int event_size;
+  int event_pos = 0;
+  struct inotify_event *event;
+
+  res = read(nfd, event_buf, sizeof(event_buf));
+  if (res < (int)sizeof(*event)) {
+    if (errno == EINTR)
+      return 0;
+    fprintf(stderr, "could not get event, %s\n", strerror(errno));
+    return 1;
+  }
+
+  strcpy(devname, dirname);
+  filename = devname + strlen(devname);
+  *filename++ = '/';
+
+  while (res >= (int)sizeof(*event)) {
+    event = reinterpret_cast<struct inotify_event*>(event_buf + event_pos);
+    if (event->len) {
+      strcpy(filename, event->name);
+      if (event->mask & IN_CREATE) {
+        open_device(devname);
+      } else {
+        close_device(devname);
+      }
+    }
+    event_size = sizeof(*event) + event->len;
+    res -= event_size;
+    event_pos += event_size;
+  }
+  return 0;
+}
+
+static int scan_dir(const char* dirname) {
+  char devname[PATH_MAX];
+  char* filename;
+  DIR* dir;
+  struct dirent* de;
+  dir = opendir(dirname);
+  if (dir == NULL)
+    return -1;
+  strcpy(devname, dirname);
+  filename = devname + strlen(devname);
+  *filename++ = '/';
+  while ((de = readdir(dir))) {
+    if ((de->d_name[0] == '.' && de->d_name[1] == '\0') ||
+        (de->d_name[1] == '.' && de->d_name[2] == '\0'))
+      continue;
+    strcpy(filename, de->d_name);
+    open_device(devname);
+  }
+  closedir(dir);
+  return 0;
+}
+
+int init_getevent() {
+  int res;
+  const char* device_path = "/dev/input";
+
+  nfds = 1;
+  ufds = reinterpret_cast<pollfd*>(calloc(1, sizeof(ufds[0])));
+  ufds[0].fd = inotify_init();
+  ufds[0].events = POLLIN;
+
+  res = inotify_add_watch(ufds[0].fd, device_path, IN_DELETE | IN_CREATE);
+  if (res < 0) {
+    return 1;
+  }
+  res = scan_dir(device_path);
+  if (res < 0) {
+    return 1;
+  }
+  return 0;
+}
+
+void uninit_getevent() {
+  int i;
+  for (i = 0; i < nfds; i++) {
+    close(ufds[i].fd);
+  }
+  free(ufds);
+  ufds = 0;
+  nfds = 0;
+}
+
+int get_event(struct input_event* event, int timeout) {
+  int res;
+  int i;
+  int pollres;
+  const char* device_path = "/dev/input";
+  while (1) {
+    pollres = poll(ufds, nfds, timeout);
+    if (pollres == 0) {
+      return 1;
+    }
+    if (ufds[0].revents & POLLIN) {
+      read_notify(device_path, ufds[0].fd);
+    }
+    for (i = 1; i < nfds; i++) {
+      if (ufds[i].revents) {
+        if (ufds[i].revents & POLLIN) {
+          res = read(ufds[i].fd, event, sizeof(*event));
+          if (res < static_cast<int>(sizeof(event))) {
+            fprintf(stderr, "could not get event\n");
+            return -1;
+          }
+          return 0;
+        }
+      }
+    }
+  }
+  return 0;
+}
diff --git a/debuggerd/mips/machine.c b/debuggerd/mips/machine.c
deleted file mode 100644
index 489f3c5..0000000
--- a/debuggerd/mips/machine.c
+++ /dev/null
@@ -1,174 +0,0 @@
-/* system/debuggerd/debuggerd.c
-**
-** Copyright 2012, The Android Open Source Project
-**
-** Licensed under the Apache License, Version 2.0 (the "License");
-** you may not use this file except in compliance with the License.
-** You may obtain a copy of the License at
-**
-**     http://www.apache.org/licenses/LICENSE-2.0
-**
-** Unless required by applicable law or agreed to in writing, software
-** distributed under the License is distributed on an "AS IS" BASIS,
-** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-** See the License for the specific language governing permissions and
-** limitations under the License.
-*/
-
-#include <stddef.h>
-#include <stdbool.h>
-#include <stdlib.h>
-#include <string.h>
-#include <stdio.h>
-#include <errno.h>
-#include <sys/types.h>
-#include <sys/ptrace.h>
-
-#include <corkscrew/ptrace.h>
-
-#include <sys/user.h>
-
-#include "../utility.h"
-#include "../machine.h"
-
-/* enable to dump memory pointed to by every register */
-#define DUMP_MEMORY_FOR_ALL_REGISTERS 1
-
-#define R(x) ((unsigned int)(x))
-
-static void dump_memory(log_t* log, pid_t tid, uintptr_t addr, int scope_flags) {
-    char code_buffer[64];       /* actual 8+1+((8+1)*4) + 1 == 45 */
-    char ascii_buffer[32];      /* actual 16 + 1 == 17 */
-    uintptr_t p, end;
-
-    p = addr & ~3;
-    p -= 32;
-    if (p > addr) {
-        /* catch underflow */
-        p = 0;
-    }
-    end = p + 80;
-    /* catch overflow; 'end - p' has to be multiples of 16 */
-    while (end < p)
-        end -= 16;
-
-    /* Dump the code around PC as:
-     *  addr     contents                             ascii
-     *  00008d34 ef000000 e8bd0090 e1b00000 512fff1e  ............../Q
-     *  00008d44 ea00b1f9 e92d0090 e3a070fc ef000000  ......-..p......
-     */
-    while (p < end) {
-        char* asc_out = ascii_buffer;
-
-        sprintf(code_buffer, "%08x ", p);
-
-        int i;
-        for (i = 0; i < 4; i++) {
-            /*
-             * If we see (data == -1 && errno != 0), we know that the ptrace
-             * call failed, probably because we're dumping memory in an
-             * unmapped or inaccessible page.  I don't know if there's
-             * value in making that explicit in the output -- it likely
-             * just complicates parsing and clarifies nothing for the
-             * enlightened reader.
-             */
-            long data = ptrace(PTRACE_PEEKTEXT, tid, (void*)p, NULL);
-            sprintf(code_buffer + strlen(code_buffer), "%08lx ", data);
-
-            int j;
-            for (j = 0; j < 4; j++) {
-                /*
-                 * Our isprint() allows high-ASCII characters that display
-                 * differently (often badly) in different viewers, so we
-                 * just use a simpler test.
-                 */
-                char val = (data >> (j*8)) & 0xff;
-                if (val >= 0x20 && val < 0x7f) {
-                    *asc_out++ = val;
-                } else {
-                    *asc_out++ = '.';
-                }
-            }
-            p += 4;
-        }
-        *asc_out = '\0';
-        _LOG(log, scope_flags, "    %s %s\n", code_buffer, ascii_buffer);
-    }
-}
-
-/*
- * If configured to do so, dump memory around *all* registers
- * for the crashing thread.
- */
-void dump_memory_and_code(log_t* log, pid_t tid, int scope_flags) {
-    pt_regs_mips_t r;
-    if(ptrace(PTRACE_GETREGS, tid, 0, &r)) {
-        return;
-    }
-
-    if (IS_AT_FAULT(scope_flags) && DUMP_MEMORY_FOR_ALL_REGISTERS) {
-        static const char REG_NAMES[] = "$0atv0v1a0a1a2a3t0t1t2t3t4t5t6t7s0s1s2s3s4s5s6s7t8t9k0k1gpsps8ra";
-
-        for (int reg = 0; reg < 32; reg++) {
-            /* skip uninteresting registers */
-            if (reg == 0 /* $0 */
-                || reg == 26 /* $k0 */
-                || reg == 27 /* $k1 */
-                || reg == 31 /* $ra (done below) */
-               )
-               continue;
-
-            uintptr_t addr = R(r.regs[reg]);
-
-            /*
-             * Don't bother if it looks like a small int or ~= null, or if
-             * it's in the kernel area.
-             */
-            if (addr < 4096 || addr >= 0x80000000) {
-                continue;
-            }
-
-            _LOG(log, scope_flags | SCOPE_SENSITIVE, "\nmemory near %.2s:\n", &REG_NAMES[reg * 2]);
-            dump_memory(log, tid, addr, scope_flags | SCOPE_SENSITIVE);
-        }
-    }
-
-    unsigned int pc = R(r.cp0_epc);
-    unsigned int ra = R(r.regs[31]);
-
-    _LOG(log, scope_flags, "\ncode around pc:\n");
-    dump_memory(log, tid, (uintptr_t)pc, scope_flags);
-
-    if (pc != ra) {
-        _LOG(log, scope_flags, "\ncode around ra:\n");
-        dump_memory(log, tid, (uintptr_t)ra, scope_flags);
-    }
-}
-
-void dump_registers(log_t* log, pid_t tid, int scope_flags)
-{
-    pt_regs_mips_t r;
-    if(ptrace(PTRACE_GETREGS, tid, 0, &r)) {
-        _LOG(log, scope_flags, "cannot get registers: %s\n", strerror(errno));
-        return;
-    }
-
-    _LOG(log, scope_flags, " zr %08x  at %08x  v0 %08x  v1 %08x\n",
-     R(r.regs[0]), R(r.regs[1]), R(r.regs[2]), R(r.regs[3]));
-    _LOG(log, scope_flags, " a0 %08x  a1 %08x  a2 %08x  a3 %08x\n",
-     R(r.regs[4]), R(r.regs[5]), R(r.regs[6]), R(r.regs[7]));
-    _LOG(log, scope_flags, " t0 %08x  t1 %08x  t2 %08x  t3 %08x\n",
-     R(r.regs[8]), R(r.regs[9]), R(r.regs[10]), R(r.regs[11]));
-    _LOG(log, scope_flags, " t4 %08x  t5 %08x  t6 %08x  t7 %08x\n",
-     R(r.regs[12]), R(r.regs[13]), R(r.regs[14]), R(r.regs[15]));
-    _LOG(log, scope_flags, " s0 %08x  s1 %08x  s2 %08x  s3 %08x\n",
-     R(r.regs[16]), R(r.regs[17]), R(r.regs[18]), R(r.regs[19]));
-    _LOG(log, scope_flags, " s4 %08x  s5 %08x  s6 %08x  s7 %08x\n",
-     R(r.regs[20]), R(r.regs[21]), R(r.regs[22]), R(r.regs[23]));
-    _LOG(log, scope_flags, " t8 %08x  t9 %08x  k0 %08x  k1 %08x\n",
-     R(r.regs[24]), R(r.regs[25]), R(r.regs[26]), R(r.regs[27]));
-    _LOG(log, scope_flags, " gp %08x  sp %08x  s8 %08x  ra %08x\n",
-     R(r.regs[28]), R(r.regs[29]), R(r.regs[30]), R(r.regs[31]));
-    _LOG(log, scope_flags, " hi %08x  lo %08x bva %08x epc %08x\n",
-     R(r.hi), R(r.lo), R(r.cp0_badvaddr), R(r.cp0_epc));
-}
diff --git a/debuggerd/mips/machine.cpp b/debuggerd/mips/machine.cpp
new file mode 100644
index 0000000..d1a7f2d
--- /dev/null
+++ b/debuggerd/mips/machine.cpp
@@ -0,0 +1,162 @@
+/*
+ * Copyright 2012, The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <stddef.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+#include <errno.h>
+#include <sys/types.h>
+#include <sys/ptrace.h>
+
+#include <corkscrew/ptrace.h>
+
+#include <sys/user.h>
+
+#include "../utility.h"
+#include "../machine.h"
+
+// enable to dump memory pointed to by every register
+#define DUMP_MEMORY_FOR_ALL_REGISTERS 1
+
+#define R(x) (static_cast<unsigned int>(x))
+
+static void dump_memory(log_t* log, pid_t tid, uintptr_t addr, int scope_flags) {
+  char code_buffer[64];       // actual 8+1+((8+1)*4) + 1 == 45
+  char ascii_buffer[32];      // actual 16 + 1 == 17
+  uintptr_t p, end;
+
+  p = addr & ~3;
+  p -= 32;
+  if (p > addr) {
+    // catch underflow
+    p = 0;
+  }
+  end = p + 80;
+  // catch overflow; 'end - p' has to be multiples of 16
+  while (end < p)
+    end -= 16;
+
+  // Dump the code around PC as:
+  //  addr     contents                             ascii
+  //  00008d34 ef000000 e8bd0090 e1b00000 512fff1e  ............../Q
+  //  00008d44 ea00b1f9 e92d0090 e3a070fc ef000000  ......-..p......
+  while (p < end) {
+    char* asc_out = ascii_buffer;
+
+    sprintf(code_buffer, "%08x ", p);
+
+    int i;
+    for (i = 0; i < 4; i++) {
+      // If we see (data == -1 && errno != 0), we know that the ptrace
+      // call failed, probably because we're dumping memory in an
+      // unmapped or inaccessible page.  I don't know if there's
+      // value in making that explicit in the output -- it likely
+      // just complicates parsing and clarifies nothing for the
+      // enlightened reader.
+      long data = ptrace(PTRACE_PEEKTEXT, tid, (void*)p, NULL);
+      sprintf(code_buffer + strlen(code_buffer), "%08lx ", data);
+
+      int j;
+      for (j = 0; j < 4; j++) {
+        // Our isprint() allows high-ASCII characters that display
+        // differently (often badly) in different viewers, so we
+        // just use a simpler test.
+        char val = (data >> (j*8)) & 0xff;
+        if (val >= 0x20 && val < 0x7f) {
+          *asc_out++ = val;
+        } else {
+          *asc_out++ = '.';
+        }
+      }
+      p += 4;
+    }
+    *asc_out = '\0';
+    _LOG(log, scope_flags, "    %s %s\n", code_buffer, ascii_buffer);
+  }
+}
+
+// If configured to do so, dump memory around *all* registers
+// for the crashing thread.
+void dump_memory_and_code(log_t* log, pid_t tid, int scope_flags) {
+  pt_regs_mips_t r;
+  if (ptrace(PTRACE_GETREGS, tid, 0, &r)) {
+    return;
+  }
+
+  if (IS_AT_FAULT(scope_flags) && DUMP_MEMORY_FOR_ALL_REGISTERS) {
+    static const char REG_NAMES[] = "$0atv0v1a0a1a2a3t0t1t2t3t4t5t6t7s0s1s2s3s4s5s6s7t8t9k0k1gpsps8ra";
+
+    for (int reg = 0; reg < 32; reg++) {
+      // skip uninteresting registers
+      if (reg == 0 // $0
+          || reg == 26 // $k0
+          || reg == 27 // $k1
+          || reg == 31 // $ra (done below)
+         )
+        continue;
+
+      uintptr_t addr = R(r.regs[reg]);
+
+      // Don't bother if it looks like a small int or ~= null, or if
+      // it's in the kernel area.
+      if (addr < 4096 || addr >= 0x80000000) {
+        continue;
+      }
+
+      _LOG(log, scope_flags | SCOPE_SENSITIVE, "\nmemory near %.2s:\n", &REG_NAMES[reg * 2]);
+      dump_memory(log, tid, addr, scope_flags | SCOPE_SENSITIVE);
+    }
+  }
+
+  unsigned int pc = R(r.cp0_epc);
+  unsigned int ra = R(r.regs[31]);
+
+  _LOG(log, scope_flags, "\ncode around pc:\n");
+  dump_memory(log, tid, (uintptr_t)pc, scope_flags);
+
+  if (pc != ra) {
+    _LOG(log, scope_flags, "\ncode around ra:\n");
+    dump_memory(log, tid, (uintptr_t)ra, scope_flags);
+  }
+}
+
+void dump_registers(log_t* log, pid_t tid, int scope_flags) {
+  pt_regs_mips_t r;
+  if(ptrace(PTRACE_GETREGS, tid, 0, &r)) {
+    _LOG(log, scope_flags, "cannot get registers: %s\n", strerror(errno));
+    return;
+  }
+
+  _LOG(log, scope_flags, " zr %08x  at %08x  v0 %08x  v1 %08x\n",
+       R(r.regs[0]), R(r.regs[1]), R(r.regs[2]), R(r.regs[3]));
+  _LOG(log, scope_flags, " a0 %08x  a1 %08x  a2 %08x  a3 %08x\n",
+       R(r.regs[4]), R(r.regs[5]), R(r.regs[6]), R(r.regs[7]));
+  _LOG(log, scope_flags, " t0 %08x  t1 %08x  t2 %08x  t3 %08x\n",
+       R(r.regs[8]), R(r.regs[9]), R(r.regs[10]), R(r.regs[11]));
+  _LOG(log, scope_flags, " t4 %08x  t5 %08x  t6 %08x  t7 %08x\n",
+       R(r.regs[12]), R(r.regs[13]), R(r.regs[14]), R(r.regs[15]));
+  _LOG(log, scope_flags, " s0 %08x  s1 %08x  s2 %08x  s3 %08x\n",
+       R(r.regs[16]), R(r.regs[17]), R(r.regs[18]), R(r.regs[19]));
+  _LOG(log, scope_flags, " s4 %08x  s5 %08x  s6 %08x  s7 %08x\n",
+       R(r.regs[20]), R(r.regs[21]), R(r.regs[22]), R(r.regs[23]));
+  _LOG(log, scope_flags, " t8 %08x  t9 %08x  k0 %08x  k1 %08x\n",
+       R(r.regs[24]), R(r.regs[25]), R(r.regs[26]), R(r.regs[27]));
+  _LOG(log, scope_flags, " gp %08x  sp %08x  s8 %08x  ra %08x\n",
+       R(r.regs[28]), R(r.regs[29]), R(r.regs[30]), R(r.regs[31]));
+  _LOG(log, scope_flags, " hi %08x  lo %08x bva %08x epc %08x\n",
+       R(r.hi), R(r.lo), R(r.cp0_badvaddr), R(r.cp0_epc));
+}
diff --git a/debuggerd/tombstone.c b/debuggerd/tombstone.c
deleted file mode 100644
index 058a6b2..0000000
--- a/debuggerd/tombstone.c
+++ /dev/null
@@ -1,796 +0,0 @@
-/*
- * Copyright (C) 2012-2013 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <stddef.h>
-#include <stdbool.h>
-#include <stdlib.h>
-#include <signal.h>
-#include <string.h>
-#include <stdio.h>
-#include <fcntl.h>
-#include <errno.h>
-#include <dirent.h>
-#include <time.h>
-#include <sys/ptrace.h>
-#include <sys/stat.h>
-
-#include <private/android_filesystem_config.h>
-
-#include <log/log.h>
-#include <log/logger.h>
-#include <cutils/properties.h>
-
-#include <backtrace/backtrace.h>
-
-#include <sys/socket.h>
-#include <linux/un.h>
-
-#include <selinux/android.h>
-
-#include "machine.h"
-#include "tombstone.h"
-#include "backtrace.h"
-
-#define STACK_WORDS 16
-
-#define MAX_TOMBSTONES  10
-#define TOMBSTONE_DIR   "/data/tombstones"
-
-/* Must match the path defined in NativeCrashListener.java */
-#define NCRASH_SOCKET_PATH "/data/system/ndebugsocket"
-
-#define typecheck(x,y) {    \
-    typeof(x) __dummy1;     \
-    typeof(y) __dummy2;     \
-    (void)(&__dummy1 == &__dummy2); }
-
-
-static bool signal_has_address(int sig) {
-    switch (sig) {
-        case SIGILL:
-        case SIGFPE:
-        case SIGSEGV:
-        case SIGBUS:
-            return true;
-        default:
-            return false;
-    }
-}
-
-static const char *get_signame(int sig)
-{
-    switch(sig) {
-    case SIGILL:     return "SIGILL";
-    case SIGABRT:    return "SIGABRT";
-    case SIGBUS:     return "SIGBUS";
-    case SIGFPE:     return "SIGFPE";
-    case SIGSEGV:    return "SIGSEGV";
-    case SIGPIPE:    return "SIGPIPE";
-#ifdef SIGSTKFLT
-    case SIGSTKFLT:  return "SIGSTKFLT";
-#endif
-    case SIGSTOP:    return "SIGSTOP";
-    default:         return "?";
-    }
-}
-
-static const char *get_sigcode(int signo, int code)
-{
-    // Try the signal-specific codes...
-    switch (signo) {
-    case SIGILL:
-        switch (code) {
-        case ILL_ILLOPC: return "ILL_ILLOPC";
-        case ILL_ILLOPN: return "ILL_ILLOPN";
-        case ILL_ILLADR: return "ILL_ILLADR";
-        case ILL_ILLTRP: return "ILL_ILLTRP";
-        case ILL_PRVOPC: return "ILL_PRVOPC";
-        case ILL_PRVREG: return "ILL_PRVREG";
-        case ILL_COPROC: return "ILL_COPROC";
-        case ILL_BADSTK: return "ILL_BADSTK";
-        }
-        break;
-    case SIGBUS:
-        switch (code) {
-        case BUS_ADRALN: return "BUS_ADRALN";
-        case BUS_ADRERR: return "BUS_ADRERR";
-        case BUS_OBJERR: return "BUS_OBJERR";
-        }
-        break;
-    case SIGFPE:
-        switch (code) {
-        case FPE_INTDIV: return "FPE_INTDIV";
-        case FPE_INTOVF: return "FPE_INTOVF";
-        case FPE_FLTDIV: return "FPE_FLTDIV";
-        case FPE_FLTOVF: return "FPE_FLTOVF";
-        case FPE_FLTUND: return "FPE_FLTUND";
-        case FPE_FLTRES: return "FPE_FLTRES";
-        case FPE_FLTINV: return "FPE_FLTINV";
-        case FPE_FLTSUB: return "FPE_FLTSUB";
-        }
-        break;
-    case SIGSEGV:
-        switch (code) {
-        case SEGV_MAPERR: return "SEGV_MAPERR";
-        case SEGV_ACCERR: return "SEGV_ACCERR";
-        }
-        break;
-    case SIGTRAP:
-        switch (code) {
-        case TRAP_BRKPT: return "TRAP_BRKPT";
-        case TRAP_TRACE: return "TRAP_TRACE";
-        }
-        break;
-    }
-    // Then the other codes...
-    switch (code) {
-    case SI_USER:    return "SI_USER";
-#if defined(SI_KERNEL)
-    case SI_KERNEL:  return "SI_KERNEL";
-#endif
-    case SI_QUEUE:   return "SI_QUEUE";
-    case SI_TIMER:   return "SI_TIMER";
-    case SI_MESGQ:   return "SI_MESGQ";
-    case SI_ASYNCIO: return "SI_ASYNCIO";
-#if defined(SI_SIGIO)
-    case SI_SIGIO:   return "SI_SIGIO";
-#endif
-#if defined(SI_TKILL)
-    case SI_TKILL:   return "SI_TKILL";
-#endif
-    }
-    // Then give up...
-    return "?";
-}
-
-static void dump_revision_info(log_t* log)
-{
-    char revision[PROPERTY_VALUE_MAX];
-
-    property_get("ro.revision", revision, "unknown");
-
-    _LOG(log, SCOPE_AT_FAULT, "Revision: '%s'\n", revision);
-}
-
-static void dump_build_info(log_t* log)
-{
-    char fingerprint[PROPERTY_VALUE_MAX];
-
-    property_get("ro.build.fingerprint", fingerprint, "unknown");
-
-    _LOG(log, SCOPE_AT_FAULT, "Build fingerprint: '%s'\n", fingerprint);
-}
-
-static void dump_fault_addr(log_t* log, pid_t tid, int sig)
-{
-    siginfo_t si;
-
-    memset(&si, 0, sizeof(si));
-    if(ptrace(PTRACE_GETSIGINFO, tid, 0, &si)){
-        _LOG(log, SCOPE_AT_FAULT, "cannot get siginfo: %s\n", strerror(errno));
-    } else if (signal_has_address(sig)) {
-        _LOG(log, SCOPE_AT_FAULT, "signal %d (%s), code %d (%s), fault addr %08x\n",
-             sig, get_signame(sig),
-             si.si_code, get_sigcode(sig, si.si_code),
-             (uintptr_t) si.si_addr);
-    } else {
-        _LOG(log, SCOPE_AT_FAULT, "signal %d (%s), code %d (%s), fault addr --------\n",
-             sig, get_signame(sig), si.si_code, get_sigcode(sig, si.si_code));
-    }
-}
-
-static void dump_thread_info(log_t* log, pid_t pid, pid_t tid, int scope_flags) {
-    char path[64];
-    char threadnamebuf[1024];
-    char* threadname = NULL;
-    FILE *fp;
-
-    snprintf(path, sizeof(path), "/proc/%d/comm", tid);
-    if ((fp = fopen(path, "r"))) {
-        threadname = fgets(threadnamebuf, sizeof(threadnamebuf), fp);
-        fclose(fp);
-        if (threadname) {
-            size_t len = strlen(threadname);
-            if (len && threadname[len - 1] == '\n') {
-                threadname[len - 1] = '\0';
-            }
-        }
-    }
-
-    if (IS_AT_FAULT(scope_flags)) {
-        char procnamebuf[1024];
-        char* procname = NULL;
-
-        snprintf(path, sizeof(path), "/proc/%d/cmdline", pid);
-        if ((fp = fopen(path, "r"))) {
-            procname = fgets(procnamebuf, sizeof(procnamebuf), fp);
-            fclose(fp);
-        }
-
-        _LOG(log, SCOPE_AT_FAULT, "pid: %d, tid: %d, name: %s  >>> %s <<<\n", pid, tid,
-                threadname ? threadname : "UNKNOWN",
-                procname ? procname : "UNKNOWN");
-    } else {
-        _LOG(log, 0, "pid: %d, tid: %d, name: %s\n",
-                pid, tid, threadname ? threadname : "UNKNOWN");
-    }
-}
-
-static void dump_stack_segment(const backtrace_context_t* context, log_t* log,
-        int scope_flags, uintptr_t *sp, size_t words, int label) {
-    for (size_t i = 0; i < words; i++) {
-        uint32_t stack_content;
-        if (!backtrace_read_word(context, *sp, &stack_content)) {
-            break;
-        }
-
-        const char* map_name = backtrace_get_map_name(context, stack_content, NULL);
-        if (!map_name) {
-            map_name = "";
-        }
-        uintptr_t offset = 0;
-        char* func_name = backtrace_get_func_name(context, stack_content, &offset);
-        if (func_name) {
-            if (!i && label >= 0) {
-                if (offset) {
-                    _LOG(log, scope_flags, "    #%02d  %08x  %08x  %s (%s+%u)\n",
-                            label, *sp, stack_content, map_name, func_name, offset);
-                } else {
-                    _LOG(log, scope_flags, "    #%02d  %08x  %08x  %s (%s)\n",
-                            label, *sp, stack_content, map_name, func_name);
-                }
-            } else {
-                if (offset) {
-                    _LOG(log, scope_flags, "         %08x  %08x  %s (%s+%u)\n",
-                            *sp, stack_content, map_name, func_name, offset);
-                } else {
-                    _LOG(log, scope_flags, "         %08x  %08x  %s (%s)\n",
-                            *sp, stack_content, map_name, func_name);
-                }
-            }
-            free(func_name);
-        } else {
-            if (!i && label >= 0) {
-                _LOG(log, scope_flags, "    #%02d  %08x  %08x  %s\n",
-                        label, *sp, stack_content, map_name);
-            } else {
-                _LOG(log, scope_flags, "         %08x  %08x  %s\n",
-                        *sp, stack_content, map_name);
-            }
-        }
-
-        *sp += sizeof(uint32_t);
-    }
-}
-
-static void dump_stack(const backtrace_context_t* context, log_t* log, int scope_flags) {
-    const backtrace_t* backtrace = context->backtrace;
-    size_t first = 0, last;
-    for (size_t i = 0; i < backtrace->num_frames; i++) {
-        if (backtrace->frames[i].sp) {
-            if (!first) {
-                first = i+1;
-            }
-            last = i;
-        }
-    }
-    if (!first) {
-        return;
-    }
-    first--;
-
-    scope_flags |= SCOPE_SENSITIVE;
-
-    // Dump a few words before the first frame.
-    uintptr_t sp = backtrace->frames[first].sp - STACK_WORDS * sizeof(uint32_t);
-    dump_stack_segment(context, log, scope_flags, &sp, STACK_WORDS, -1);
-
-    // Dump a few words from all successive frames.
-    // Only log the first 3 frames, put the rest in the tombstone.
-    for (size_t i = first; i <= last; i++) {
-        const backtrace_frame_data_t* frame = &backtrace->frames[i];
-        if (sp != frame->sp) {
-            _LOG(log, scope_flags, "         ........  ........\n");
-            sp = frame->sp;
-        }
-        if (i - first == 3) {
-            scope_flags &= (~SCOPE_AT_FAULT);
-        }
-        if (i == last) {
-            dump_stack_segment(context, log, scope_flags, &sp, STACK_WORDS, i);
-            if (sp < frame->sp + frame->stack_size) {
-                _LOG(log, scope_flags, "         ........  ........\n");
-            }
-        } else {
-            size_t words = frame->stack_size / sizeof(uint32_t);
-            if (words == 0) {
-                words = 1;
-            } else if (words > STACK_WORDS) {
-                words = STACK_WORDS;
-            }
-            dump_stack_segment(context, log, scope_flags, &sp, words, i);
-        }
-    }
-}
-
-static void dump_backtrace_and_stack(const backtrace_context_t* context,
-        log_t* log, int scope_flags) {
-    if (context->backtrace->num_frames) {
-        _LOG(log, scope_flags, "\nbacktrace:\n");
-        dump_backtrace_to_log(context, log, scope_flags, "    ");
-
-        _LOG(log, scope_flags, "\nstack:\n");
-        dump_stack(context, log, scope_flags);
-    }
-}
-
-static void dump_map(log_t* log, const backtrace_map_info_t* m, const char* what, int scope_flags) {
-    if (m != NULL) {
-        _LOG(log, scope_flags, "    %08x-%08x %c%c%c %s\n", m->start, m->end,
-             m->is_readable ? 'r' : '-',
-             m->is_writable ? 'w' : '-',
-             m->is_executable ? 'x' : '-',
-             m->name);
-    } else {
-        _LOG(log, scope_flags, "    (no %s)\n", what);
-    }
-}
-
-static void dump_nearby_maps(const backtrace_map_info_t* map_info_list, log_t* log, pid_t tid, int scope_flags) {
-    scope_flags |= SCOPE_SENSITIVE;
-    siginfo_t si;
-    memset(&si, 0, sizeof(si));
-    if (ptrace(PTRACE_GETSIGINFO, tid, 0, &si)) {
-        _LOG(log, scope_flags, "cannot get siginfo for %d: %s\n",
-                tid, strerror(errno));
-        return;
-    }
-    if (!signal_has_address(si.si_signo)) {
-        return;
-    }
-
-    uintptr_t addr = (uintptr_t) si.si_addr;
-    addr &= ~0xfff;     /* round to 4K page boundary */
-    if (addr == 0) {    /* null-pointer deref */
-        return;
-    }
-
-    _LOG(log, scope_flags, "\nmemory map around fault addr %08x:\n", (int)si.si_addr);
-
-    /*
-     * Search for a match, or for a hole where the match would be.  The list
-     * is backward from the file content, so it starts at high addresses.
-     */
-    const backtrace_map_info_t* map = map_info_list;
-    const backtrace_map_info_t* next = NULL;
-    const backtrace_map_info_t* prev = NULL;
-    while (map != NULL) {
-        if (addr >= map->start && addr < map->end) {
-            next = map->next;
-            break;
-        } else if (addr >= map->end) {
-            /* map would be between "prev" and this entry */
-            next = map;
-            map = NULL;
-            break;
-        }
-
-        prev = map;
-        map = map->next;
-    }
-
-    /*
-     * Show "next" then "match" then "prev" so that the addresses appear in
-     * ascending order (like /proc/pid/maps).
-     */
-    dump_map(log, next, "map below", scope_flags);
-    dump_map(log, map, "map for address", scope_flags);
-    dump_map(log, prev, "map above", scope_flags);
-}
-
-static void dump_thread(const backtrace_context_t* context, log_t* log,
-        int scope_flags, int* total_sleep_time_usec) {
-    const backtrace_t* backtrace = context->backtrace;
-    wait_for_stop(backtrace->tid, total_sleep_time_usec);
-
-    dump_registers(log, backtrace->tid, scope_flags);
-    dump_backtrace_and_stack(context, log, scope_flags);
-    if (IS_AT_FAULT(scope_flags)) {
-        dump_memory_and_code(log, backtrace->tid, scope_flags);
-        dump_nearby_maps(backtrace->map_info_list, log, backtrace->tid, scope_flags);
-    }
-}
-
-/* Return true if some thread is not detached cleanly */
-static bool dump_sibling_thread_report(
-        log_t* log, pid_t pid, pid_t tid, int* total_sleep_time_usec, backtrace_map_info_t* map_info) {
-    char task_path[64];
-    snprintf(task_path, sizeof(task_path), "/proc/%d/task", pid);
-
-    DIR* d = opendir(task_path);
-    /* Bail early if the task directory cannot be opened */
-    if (d == NULL) {
-        XLOG("Cannot open /proc/%d/task\n", pid);
-        return false;
-    }
-
-    bool detach_failed = false;
-    struct dirent* de;
-    while ((de = readdir(d)) != NULL) {
-        /* Ignore "." and ".." */
-        if (!strcmp(de->d_name, ".") || !strcmp(de->d_name, "..")) {
-            continue;
-        }
-
-        /* The main thread at fault has been handled individually */
-        char* end;
-        pid_t new_tid = strtoul(de->d_name, &end, 10);
-        if (*end || new_tid == tid) {
-            continue;
-        }
-
-        /* Skip this thread if cannot ptrace it */
-        if (ptrace(PTRACE_ATTACH, new_tid, 0, 0) < 0) {
-            continue;
-        }
-
-        _LOG(log, 0, "--- --- --- --- --- --- --- --- --- --- --- --- --- --- --- ---\n");
-        dump_thread_info(log, pid, new_tid, 0);
-        backtrace_context_t new_context;
-        if (backtrace_create_context_with_map(&new_context, pid, new_tid, 0, map_info)) {
-            dump_thread(&new_context, log, 0, total_sleep_time_usec);
-            backtrace_destroy_context(&new_context);
-        }
-
-        if (ptrace(PTRACE_DETACH, new_tid, 0, 0) != 0) {
-            LOG("ptrace detach from %d failed: %s\n", new_tid, strerror(errno));
-            detach_failed = true;
-        }
-    }
-
-    closedir(d);
-    return detach_failed;
-}
-
-/*
- * Reads the contents of the specified log device, filters out the entries
- * that don't match the specified pid, and writes them to the tombstone file.
- *
- * If "tail" is set, we only print the last few lines.
- */
-static void dump_log_file(log_t* log, pid_t pid, const char* filename,
-    unsigned int tail)
-{
-    bool first = true;
-    struct logger_list *logger_list;
-
-    logger_list = android_logger_list_open(
-        android_name_to_log_id(filename), O_RDONLY | O_NONBLOCK, tail, pid);
-
-    if (!logger_list) {
-        XLOG("Unable to open %s: %s\n", filename, strerror(errno));
-        return;
-    }
-
-    struct log_msg log_entry;
-
-    while (true) {
-        ssize_t actual = android_logger_list_read(logger_list, &log_entry);
-        struct logger_entry* entry;
-
-        if (actual < 0) {
-            if (actual == -EINTR) {
-                /* interrupted by signal, retry */
-                continue;
-            } else if (actual == -EAGAIN) {
-                /* non-blocking EOF; we're done */
-                break;
-            } else {
-                _LOG(log, 0, "Error while reading log: %s\n",
-                    strerror(-actual));
-                break;
-            }
-        } else if (actual == 0) {
-            _LOG(log, 0, "Got zero bytes while reading log: %s\n",
-                strerror(errno));
-            break;
-        }
-
-        /*
-         * NOTE: if you XLOG something here, this will spin forever,
-         * because you will be writing as fast as you're reading.  Any
-         * high-frequency debug diagnostics should just be written to
-         * the tombstone file.
-         */
-
-        entry = &log_entry.entry_v1;
-
-        if (first) {
-            _LOG(log, 0, "--------- %slog %s\n",
-                tail ? "tail end of " : "", filename);
-            first = false;
-        }
-
-        /*
-         * Msg format is: <priority:1><tag:N>\0<message:N>\0
-         *
-         * We want to display it in the same format as "logcat -v threadtime"
-         * (although in this case the pid is redundant).
-         *
-         * TODO: scan for line breaks ('\n') and display each text line
-         * on a separate line, prefixed with the header, like logcat does.
-         */
-        static const char* kPrioChars = "!.VDIWEFS";
-        unsigned hdr_size = log_entry.entry.hdr_size;
-        if (!hdr_size) {
-            hdr_size = sizeof(log_entry.entry_v1);
-        }
-        char* msg = (char *)log_entry.buf + hdr_size;
-        unsigned char prio = msg[0];
-        char* tag = msg + 1;
-        msg = tag + strlen(tag) + 1;
-
-        /* consume any trailing newlines */
-        char* eatnl = msg + strlen(msg) - 1;
-        while (eatnl >= msg && *eatnl == '\n') {
-            *eatnl-- = '\0';
-        }
-
-        char prioChar = (prio < strlen(kPrioChars) ? kPrioChars[prio] : '?');
-
-        char timeBuf[32];
-        time_t sec = (time_t) entry->sec;
-        struct tm tmBuf;
-        struct tm* ptm;
-        ptm = localtime_r(&sec, &tmBuf);
-        strftime(timeBuf, sizeof(timeBuf), "%m-%d %H:%M:%S", ptm);
-
-        _LOG(log, 0, "%s.%03d %5d %5d %c %-8s: %s\n",
-             timeBuf, entry->nsec / 1000000, entry->pid, entry->tid,
-             prioChar, tag, msg);
-    }
-
-    android_logger_list_free(logger_list);
-}
-
-/*
- * Dumps the logs generated by the specified pid to the tombstone, from both
- * "system" and "main" log devices.  Ideally we'd interleave the output.
- */
-static void dump_logs(log_t* log, pid_t pid, unsigned tail)
-{
-    dump_log_file(log, pid, "system", tail);
-    dump_log_file(log, pid, "main", tail);
-}
-
-static void dump_abort_message(const backtrace_context_t* context, log_t* log, uintptr_t address) {
-  if (address == 0) {
-    return;
-  }
-
-  address += sizeof(size_t); // Skip the buffer length.
-
-  char msg[512];
-  memset(msg, 0, sizeof(msg));
-  char* p = &msg[0];
-  while (p < &msg[sizeof(msg)]) {
-    uint32_t data;
-    if (!backtrace_read_word(context, address, &data)) {
-      break;
-    }
-    address += sizeof(uint32_t);
-
-    if ((*p++ = (data >>  0) & 0xff) == 0) {
-      break;
-    }
-    if ((*p++ = (data >>  8) & 0xff) == 0) {
-      break;
-    }
-    if ((*p++ = (data >> 16) & 0xff) == 0) {
-      break;
-    }
-    if ((*p++ = (data >> 24) & 0xff) == 0) {
-      break;
-    }
-  }
-  msg[sizeof(msg) - 1] = '\0';
-
-  _LOG(log, SCOPE_AT_FAULT, "Abort message: '%s'\n", msg);
-}
-
-/*
- * Dumps all information about the specified pid to the tombstone.
- */
-static bool dump_crash(log_t* log, pid_t pid, pid_t tid, int signal, uintptr_t abort_msg_address,
-                       bool dump_sibling_threads, int* total_sleep_time_usec)
-{
-    /* don't copy log messages to tombstone unless this is a dev device */
-    char value[PROPERTY_VALUE_MAX];
-    property_get("ro.debuggable", value, "0");
-    bool want_logs = (value[0] == '1');
-
-    if (log->amfd >= 0) {
-        /*
-         * Activity Manager protocol: binary 32-bit network-byte-order ints for the
-         * pid and signal number, followed by the raw text of the dump, culminating
-         * in a zero byte that marks end-of-data.
-         */
-        uint32_t datum = htonl(pid);
-        TEMP_FAILURE_RETRY( write(log->amfd, &datum, 4) );
-        datum = htonl(signal);
-        TEMP_FAILURE_RETRY( write(log->amfd, &datum, 4) );
-    }
-
-    _LOG(log, SCOPE_AT_FAULT,
-            "*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***\n");
-    dump_build_info(log);
-    dump_revision_info(log);
-    dump_thread_info(log, pid, tid, SCOPE_AT_FAULT);
-    if (signal) {
-        dump_fault_addr(log, tid, signal);
-    }
-
-    backtrace_context_t context;
-    /* Gather the map info once for all this process' threads. */
-    backtrace_map_info_t* map_info = backtrace_create_map_info_list(pid);
-    if (backtrace_create_context_with_map(&context, pid, tid, 0, map_info)) {
-        dump_abort_message(&context, log, abort_msg_address);
-        dump_thread(&context, log, SCOPE_AT_FAULT, total_sleep_time_usec);
-        backtrace_destroy_context(&context);
-    }
-
-    if (want_logs) {
-        dump_logs(log, pid, 5);
-    }
-
-    bool detach_failed = false;
-    if (dump_sibling_threads) {
-        detach_failed = dump_sibling_thread_report(log, pid, tid, total_sleep_time_usec, map_info);
-    }
-
-    /* Destroy the previously created map info. */
-    backtrace_destroy_map_info_list(map_info);
-
-    if (want_logs) {
-        dump_logs(log, pid, 0);
-    }
-
-    /* send EOD to the Activity Manager, then wait for its ack to avoid racing ahead
-     * and killing the target out from under it */
-    if (log->amfd >= 0) {
-        uint8_t eodMarker = 0;
-        TEMP_FAILURE_RETRY( write(log->amfd, &eodMarker, 1) );
-        /* 3 sec timeout reading the ack; we're fine if that happens */
-        TEMP_FAILURE_RETRY( read(log->amfd, &eodMarker, 1) );
-    }
-
-    return detach_failed;
-}
-
-/*
- * find_and_open_tombstone - find an available tombstone slot, if any, of the
- * form tombstone_XX where XX is 00 to MAX_TOMBSTONES-1, inclusive. If no
- * file is available, we reuse the least-recently-modified file.
- *
- * Returns the path of the tombstone file, allocated using malloc().  Caller must free() it.
- */
-static char* find_and_open_tombstone(int* fd)
-{
-    unsigned long mtime = ULONG_MAX;
-    struct stat sb;
-
-    /*
-     * XXX: Our stat.st_mtime isn't time_t. If it changes, as it probably ought
-     * to, our logic breaks. This check will generate a warning if that happens.
-     */
-    typecheck(mtime, sb.st_mtime);
-
-    /*
-     * In a single wolf-like pass, find an available slot and, in case none
-     * exist, find and record the least-recently-modified file.
-     */
-    char path[128];
-    int oldest = 0;
-    for (int i = 0; i < MAX_TOMBSTONES; i++) {
-        snprintf(path, sizeof(path), TOMBSTONE_DIR"/tombstone_%02d", i);
-
-        if (!stat(path, &sb)) {
-            if (sb.st_mtime < mtime) {
-                oldest = i;
-                mtime = sb.st_mtime;
-            }
-            continue;
-        }
-        if (errno != ENOENT)
-            continue;
-
-        *fd = open(path, O_CREAT | O_EXCL | O_WRONLY, 0600);
-        if (*fd < 0)
-            continue;   /* raced ? */
-
-        fchown(*fd, AID_SYSTEM, AID_SYSTEM);
-        return strdup(path);
-    }
-
-    /* we didn't find an available file, so we clobber the oldest one */
-    snprintf(path, sizeof(path), TOMBSTONE_DIR"/tombstone_%02d", oldest);
-    *fd = open(path, O_CREAT | O_TRUNC | O_WRONLY, 0600);
-    if (*fd < 0) {
-        LOG("failed to open tombstone file '%s': %s\n", path, strerror(errno));
-        return NULL;
-    }
-    fchown(*fd, AID_SYSTEM, AID_SYSTEM);
-    return strdup(path);
-}
-
-static int activity_manager_connect() {
-    int amfd = socket(PF_UNIX, SOCK_STREAM, 0);
-    if (amfd >= 0) {
-        struct sockaddr_un address;
-        int err;
-
-        memset(&address, 0, sizeof(address));
-        address.sun_family = AF_UNIX;
-        strncpy(address.sun_path, NCRASH_SOCKET_PATH, sizeof(address.sun_path));
-        err = TEMP_FAILURE_RETRY( connect(amfd, (struct sockaddr*) &address, sizeof(address)) );
-        if (!err) {
-            struct timeval tv;
-            memset(&tv, 0, sizeof(tv));
-            tv.tv_sec = 1;  // tight leash
-            err = setsockopt(amfd, SOL_SOCKET, SO_SNDTIMEO, &tv, sizeof(tv));
-            if (!err) {
-                tv.tv_sec = 3;  // 3 seconds on handshake read
-                err = setsockopt(amfd, SOL_SOCKET, SO_RCVTIMEO, &tv, sizeof(tv));
-            }
-        }
-        if (err) {
-            close(amfd);
-            amfd = -1;
-        }
-    }
-
-    return amfd;
-}
-
-char* engrave_tombstone(pid_t pid, pid_t tid, int signal, uintptr_t abort_msg_address,
-        bool dump_sibling_threads, bool quiet, bool* detach_failed,
-        int* total_sleep_time_usec) {
-    mkdir(TOMBSTONE_DIR, 0755);
-    chown(TOMBSTONE_DIR, AID_SYSTEM, AID_SYSTEM);
-
-    if (selinux_android_restorecon(TOMBSTONE_DIR) == -1) {
-        *detach_failed = false;
-        return NULL;
-    }
-
-    int fd;
-    char* path = find_and_open_tombstone(&fd);
-    if (!path) {
-        *detach_failed = false;
-        return NULL;
-    }
-
-    log_t log;
-    log.tfd = fd;
-    log.amfd = activity_manager_connect();
-    log.quiet = quiet;
-    *detach_failed = dump_crash(&log, pid, tid, signal, abort_msg_address, dump_sibling_threads,
-            total_sleep_time_usec);
-
-    close(log.amfd);
-    close(fd);
-    return path;
-}
diff --git a/debuggerd/tombstone.cpp b/debuggerd/tombstone.cpp
new file mode 100644
index 0000000..f8ec8cf
--- /dev/null
+++ b/debuggerd/tombstone.cpp
@@ -0,0 +1,761 @@
+/*
+ * Copyright (C) 2012-2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <stddef.h>
+#include <stdlib.h>
+#include <signal.h>
+#include <string.h>
+#include <stdio.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <dirent.h>
+#include <time.h>
+#include <sys/ptrace.h>
+#include <sys/stat.h>
+#include <inttypes.h>
+
+#include <private/android_filesystem_config.h>
+
+#include <log/log.h>
+#include <log/logger.h>
+#include <cutils/properties.h>
+
+#include <backtrace/Backtrace.h>
+#include <backtrace/BacktraceMap.h>
+
+#include <sys/socket.h>
+#include <linux/un.h>
+
+#include <selinux/android.h>
+
+#include <UniquePtr.h>
+
+#include "machine.h"
+#include "tombstone.h"
+#include "backtrace.h"
+
+#define STACK_WORDS 16
+
+#define MAX_TOMBSTONES  10
+#define TOMBSTONE_DIR   "/data/tombstones"
+
+// Must match the path defined in NativeCrashListener.java
+#define NCRASH_SOCKET_PATH "/data/system/ndebugsocket"
+
+#define typecheck(x,y) {    \
+  typeof(x) __dummy1;     \
+  typeof(y) __dummy2;     \
+  (void)(&__dummy1 == &__dummy2); }
+
+
+static bool signal_has_address(int sig) {
+  switch (sig) {
+    case SIGILL:
+    case SIGFPE:
+    case SIGSEGV:
+    case SIGBUS:
+      return true;
+    default:
+      return false;
+  }
+}
+
+static const char* get_signame(int sig) {
+  switch(sig) {
+    case SIGILL: return "SIGILL";
+    case SIGABRT: return "SIGABRT";
+    case SIGBUS: return "SIGBUS";
+    case SIGFPE: return "SIGFPE";
+    case SIGSEGV: return "SIGSEGV";
+    case SIGPIPE: return "SIGPIPE";
+#ifdef SIGSTKFLT
+    case SIGSTKFLT: return "SIGSTKFLT";
+#endif
+    case SIGSTOP: return "SIGSTOP";
+    default: return "?";
+  }
+}
+
+static const char* get_sigcode(int signo, int code) {
+  // Try the signal-specific codes...
+  switch (signo) {
+    case SIGILL:
+      switch (code) {
+        case ILL_ILLOPC: return "ILL_ILLOPC";
+        case ILL_ILLOPN: return "ILL_ILLOPN";
+        case ILL_ILLADR: return "ILL_ILLADR";
+        case ILL_ILLTRP: return "ILL_ILLTRP";
+        case ILL_PRVOPC: return "ILL_PRVOPC";
+        case ILL_PRVREG: return "ILL_PRVREG";
+        case ILL_COPROC: return "ILL_COPROC";
+        case ILL_BADSTK: return "ILL_BADSTK";
+      }
+      break;
+    case SIGBUS:
+      switch (code) {
+        case BUS_ADRALN: return "BUS_ADRALN";
+        case BUS_ADRERR: return "BUS_ADRERR";
+        case BUS_OBJERR: return "BUS_OBJERR";
+      }
+      break;
+    case SIGFPE:
+      switch (code) {
+        case FPE_INTDIV: return "FPE_INTDIV";
+        case FPE_INTOVF: return "FPE_INTOVF";
+        case FPE_FLTDIV: return "FPE_FLTDIV";
+        case FPE_FLTOVF: return "FPE_FLTOVF";
+        case FPE_FLTUND: return "FPE_FLTUND";
+        case FPE_FLTRES: return "FPE_FLTRES";
+        case FPE_FLTINV: return "FPE_FLTINV";
+        case FPE_FLTSUB: return "FPE_FLTSUB";
+      }
+      break;
+    case SIGSEGV:
+      switch (code) {
+        case SEGV_MAPERR: return "SEGV_MAPERR";
+        case SEGV_ACCERR: return "SEGV_ACCERR";
+      }
+      break;
+    case SIGTRAP:
+      switch (code) {
+        case TRAP_BRKPT: return "TRAP_BRKPT";
+        case TRAP_TRACE: return "TRAP_TRACE";
+      }
+      break;
+  }
+  // Then the other codes...
+  switch (code) {
+    case SI_USER: return "SI_USER";
+#if defined(SI_KERNEL)
+    case SI_KERNEL: return "SI_KERNEL";
+#endif
+    case SI_QUEUE: return "SI_QUEUE";
+    case SI_TIMER: return "SI_TIMER";
+    case SI_MESGQ: return "SI_MESGQ";
+    case SI_ASYNCIO: return "SI_ASYNCIO";
+#if defined(SI_SIGIO)
+    case SI_SIGIO: return "SI_SIGIO";
+#endif
+#if defined(SI_TKILL)
+    case SI_TKILL: return "SI_TKILL";
+#endif
+  }
+  // Then give up...
+  return "?";
+}
+
+static void dump_revision_info(log_t* log) {
+  char revision[PROPERTY_VALUE_MAX];
+
+  property_get("ro.revision", revision, "unknown");
+
+  _LOG(log, SCOPE_AT_FAULT, "Revision: '%s'\n", revision);
+}
+
+static void dump_build_info(log_t* log) {
+  char fingerprint[PROPERTY_VALUE_MAX];
+
+  property_get("ro.build.fingerprint", fingerprint, "unknown");
+
+  _LOG(log, SCOPE_AT_FAULT, "Build fingerprint: '%s'\n", fingerprint);
+}
+
+static void dump_fault_addr(log_t* log, pid_t tid, int sig) {
+  siginfo_t si;
+
+  memset(&si, 0, sizeof(si));
+  if (ptrace(PTRACE_GETSIGINFO, tid, 0, &si)){
+    _LOG(log, SCOPE_AT_FAULT, "cannot get siginfo: %s\n", strerror(errno));
+  } else if (signal_has_address(sig)) {
+    _LOG(log, SCOPE_AT_FAULT, "signal %d (%s), code %d (%s), fault addr %0*" PRIxPTR "\n",
+         sig, get_signame(sig), si.si_code, get_sigcode(sig, si.si_code),
+         sizeof(uintptr_t)*2, reinterpret_cast<uintptr_t>(si.si_addr));
+  } else {
+    _LOG(log, SCOPE_AT_FAULT, "signal %d (%s), code %d (%s), fault addr --------\n",
+         sig, get_signame(sig), si.si_code, get_sigcode(sig, si.si_code));
+  }
+}
+
+static void dump_thread_info(log_t* log, pid_t pid, pid_t tid, int scope_flags) {
+  char path[64];
+  char threadnamebuf[1024];
+  char* threadname = NULL;
+  FILE *fp;
+
+  snprintf(path, sizeof(path), "/proc/%d/comm", tid);
+  if ((fp = fopen(path, "r"))) {
+    threadname = fgets(threadnamebuf, sizeof(threadnamebuf), fp);
+    fclose(fp);
+    if (threadname) {
+      size_t len = strlen(threadname);
+      if (len && threadname[len - 1] == '\n') {
+        threadname[len - 1] = '\0';
+      }
+    }
+  }
+
+  if (IS_AT_FAULT(scope_flags)) {
+    char procnamebuf[1024];
+    char* procname = NULL;
+
+    snprintf(path, sizeof(path), "/proc/%d/cmdline", pid);
+    if ((fp = fopen(path, "r"))) {
+      procname = fgets(procnamebuf, sizeof(procnamebuf), fp);
+      fclose(fp);
+    }
+
+    _LOG(log, SCOPE_AT_FAULT, "pid: %d, tid: %d, name: %s  >>> %s <<<\n", pid, tid,
+         threadname ? threadname : "UNKNOWN", procname ? procname : "UNKNOWN");
+  } else {
+    _LOG(log, 0, "pid: %d, tid: %d, name: %s\n", pid, tid, threadname ? threadname : "UNKNOWN");
+  }
+}
+
+static void dump_stack_segment(
+    Backtrace* backtrace, log_t* log, int scope_flags, uintptr_t* sp, size_t words, int label) {
+  for (size_t i = 0; i < words; i++) {
+    uint32_t stack_content;
+    if (!backtrace->ReadWord(*sp, &stack_content)) {
+      break;
+    }
+
+    const backtrace_map_t* map = backtrace->FindMap(stack_content);
+    const char* map_name;
+    if (!map) {
+      map_name = "";
+    } else {
+      map_name = map->name.c_str();
+    }
+    uintptr_t offset = 0;
+    std::string func_name(backtrace->GetFunctionName(stack_content, &offset));
+    if (!func_name.empty()) {
+      if (!i && label >= 0) {
+        if (offset) {
+          _LOG(log, scope_flags, "    #%02d  %08x  %08x  %s (%s+%u)\n",
+               label, *sp, stack_content, map_name, func_name.c_str(), offset);
+        } else {
+          _LOG(log, scope_flags, "    #%02d  %08x  %08x  %s (%s)\n",
+               label, *sp, stack_content, map_name, func_name.c_str());
+        }
+      } else {
+        if (offset) {
+          _LOG(log, scope_flags, "         %08x  %08x  %s (%s+%u)\n",
+               *sp, stack_content, map_name, func_name.c_str(), offset);
+        } else {
+          _LOG(log, scope_flags, "         %08x  %08x  %s (%s)\n",
+               *sp, stack_content, map_name, func_name.c_str());
+        }
+      }
+    } else {
+      if (!i && label >= 0) {
+        _LOG(log, scope_flags, "    #%02d  %08x  %08x  %s\n",
+             label, *sp, stack_content, map_name);
+      } else {
+        _LOG(log, scope_flags, "         %08x  %08x  %s\n",
+             *sp, stack_content, map_name);
+      }
+    }
+
+    *sp += sizeof(uint32_t);
+  }
+}
+
+static void dump_stack(Backtrace* backtrace, log_t* log, int scope_flags) {
+  size_t first = 0, last;
+  for (size_t i = 0; i < backtrace->NumFrames(); i++) {
+    const backtrace_frame_data_t* frame = backtrace->GetFrame(i);
+    if (frame->sp) {
+      if (!first) {
+        first = i+1;
+      }
+      last = i;
+    }
+  }
+  if (!first) {
+    return;
+  }
+  first--;
+
+  scope_flags |= SCOPE_SENSITIVE;
+
+  // Dump a few words before the first frame.
+  uintptr_t sp = backtrace->GetFrame(first)->sp - STACK_WORDS * sizeof(uint32_t);
+  dump_stack_segment(backtrace, log, scope_flags, &sp, STACK_WORDS, -1);
+
+  // Dump a few words from all successive frames.
+  // Only log the first 3 frames, put the rest in the tombstone.
+  for (size_t i = first; i <= last; i++) {
+    const backtrace_frame_data_t* frame = backtrace->GetFrame(i);
+    if (sp != frame->sp) {
+      _LOG(log, scope_flags, "         ........  ........\n");
+      sp = frame->sp;
+    }
+    if (i - first == 3) {
+      scope_flags &= (~SCOPE_AT_FAULT);
+    }
+    if (i == last) {
+      dump_stack_segment(backtrace, log, scope_flags, &sp, STACK_WORDS, i);
+      if (sp < frame->sp + frame->stack_size) {
+        _LOG(log, scope_flags, "         ........  ........\n");
+      }
+    } else {
+      size_t words = frame->stack_size / sizeof(uint32_t);
+      if (words == 0) {
+        words = 1;
+      } else if (words > STACK_WORDS) {
+        words = STACK_WORDS;
+      }
+      dump_stack_segment(backtrace, log, scope_flags, &sp, words, i);
+    }
+  }
+}
+
+static void dump_backtrace_and_stack(Backtrace* backtrace, log_t* log, int scope_flags) {
+  if (backtrace->NumFrames()) {
+    _LOG(log, scope_flags, "\nbacktrace:\n");
+    dump_backtrace_to_log(backtrace, log, scope_flags, "    ");
+
+    _LOG(log, scope_flags, "\nstack:\n");
+    dump_stack(backtrace, log, scope_flags);
+  }
+}
+
+static void dump_map(log_t* log, const backtrace_map_t* map, const char* what, int scope_flags) {
+  if (map != NULL) {
+    _LOG(log, scope_flags, "    %08x-%08x %c%c%c %s\n", map->start, map->end,
+         (map->flags & PROT_READ) ? 'r' : '-', (map->flags & PROT_WRITE) ? 'w' : '-',
+         (map->flags & PROT_EXEC) ? 'x' : '-', map->name.c_str());
+  } else {
+    _LOG(log, scope_flags, "    (no %s)\n", what);
+  }
+}
+
+static void dump_nearby_maps(BacktraceMap* map, log_t* log, pid_t tid, int scope_flags) {
+  scope_flags |= SCOPE_SENSITIVE;
+  siginfo_t si;
+  memset(&si, 0, sizeof(si));
+  if (ptrace(PTRACE_GETSIGINFO, tid, 0, &si)) {
+    _LOG(log, scope_flags, "cannot get siginfo for %d: %s\n", tid, strerror(errno));
+    return;
+  }
+  if (!signal_has_address(si.si_signo)) {
+    return;
+  }
+
+  uintptr_t addr = reinterpret_cast<uintptr_t>(si.si_addr);
+  addr &= ~0xfff;     // round to 4K page boundary
+  if (addr == 0) {    // null-pointer deref
+    return;
+  }
+
+  _LOG(log, scope_flags, "\nmemory map around fault addr %" PRIxPTR ":\n",
+       reinterpret_cast<uintptr_t>(si.si_addr));
+
+  // Search for a match, or for a hole where the match would be.  The list
+  // is backward from the file content, so it starts at high addresses.
+  const backtrace_map_t* cur_map = NULL;
+  const backtrace_map_t* next_map = NULL;
+  const backtrace_map_t* prev_map = NULL;
+  for (BacktraceMap::const_iterator it = map->begin(); it != map->end(); ++it) {
+    if (addr >= it->start && addr < it->end) {
+      cur_map = &*it;
+      if (it != map->begin()) {
+        prev_map = &*(it-1);
+      }
+      if (++it != map->end()) {
+        next_map = &*it;
+      }
+      break;
+    }
+  }
+
+  // Show the map address in ascending order (like /proc/pid/maps).
+  dump_map(log, prev_map, "map below", scope_flags);
+  dump_map(log, cur_map, "map for address", scope_flags);
+  dump_map(log, next_map, "map above", scope_flags);
+}
+
+static void dump_thread(
+    Backtrace* backtrace, log_t* log, int scope_flags, int* total_sleep_time_usec) {
+  wait_for_stop(backtrace->Tid(), total_sleep_time_usec);
+
+  dump_registers(log, backtrace->Tid(), scope_flags);
+  dump_backtrace_and_stack(backtrace, log, scope_flags);
+  if (IS_AT_FAULT(scope_flags)) {
+    dump_memory_and_code(log, backtrace->Tid(), scope_flags);
+    dump_nearby_maps(backtrace->GetMap(), log, backtrace->Tid(), scope_flags);
+  }
+}
+
+// Return true if some thread is not detached cleanly
+static bool dump_sibling_thread_report(
+    log_t* log, pid_t pid, pid_t tid, int* total_sleep_time_usec, BacktraceMap* map) {
+  char task_path[64];
+  snprintf(task_path, sizeof(task_path), "/proc/%d/task", pid);
+
+  DIR* d = opendir(task_path);
+  // Bail early if the task directory cannot be opened
+  if (d == NULL) {
+    XLOG("Cannot open /proc/%d/task\n", pid);
+    return false;
+  }
+
+  bool detach_failed = false;
+  struct dirent* de;
+  while ((de = readdir(d)) != NULL) {
+    // Ignore "." and ".."
+    if (!strcmp(de->d_name, ".") || !strcmp(de->d_name, "..")) {
+      continue;
+    }
+
+    // The main thread at fault has been handled individually
+    char* end;
+    pid_t new_tid = strtoul(de->d_name, &end, 10);
+    if (*end || new_tid == tid) {
+      continue;
+    }
+
+    // Skip this thread if cannot ptrace it
+    if (ptrace(PTRACE_ATTACH, new_tid, 0, 0) < 0) {
+      continue;
+    }
+
+    _LOG(log, 0, "--- --- --- --- --- --- --- --- --- --- --- --- --- --- --- ---\n");
+    dump_thread_info(log, pid, new_tid, 0);
+
+    UniquePtr<Backtrace> backtrace(Backtrace::Create(pid, new_tid, map));
+    if (backtrace->Unwind(0)) {
+      dump_thread(backtrace.get(), log, 0, total_sleep_time_usec);
+    }
+
+    if (ptrace(PTRACE_DETACH, new_tid, 0, 0) != 0) {
+      LOG("ptrace detach from %d failed: %s\n", new_tid, strerror(errno));
+      detach_failed = true;
+    }
+  }
+
+  closedir(d);
+  return detach_failed;
+}
+
+// Reads the contents of the specified log device, filters out the entries
+// that don't match the specified pid, and writes them to the tombstone file.
+//
+// If "tail" is non-zero, log the last "tail" number of lines.
+static void dump_log_file(
+    log_t* log, pid_t pid, const char* filename, unsigned int tail) {
+  bool first = true;
+  struct logger_list* logger_list;
+
+  logger_list = android_logger_list_open(
+      android_name_to_log_id(filename), O_RDONLY | O_NONBLOCK, tail, pid);
+
+  if (!logger_list) {
+    XLOG("Unable to open %s: %s\n", filename, strerror(errno));
+    return;
+  }
+
+  struct log_msg log_entry;
+
+  while (true) {
+    ssize_t actual = android_logger_list_read(logger_list, &log_entry);
+    struct logger_entry* entry;
+
+    if (actual < 0) {
+      if (actual == -EINTR) {
+        // interrupted by signal, retry
+        continue;
+      } else if (actual == -EAGAIN) {
+        // non-blocking EOF; we're done
+        break;
+      } else {
+        _LOG(log, 0, "Error while reading log: %s\n", strerror(-actual));
+        break;
+      }
+    } else if (actual == 0) {
+      _LOG(log, 0, "Got zero bytes while reading log: %s\n",
+        strerror(errno));
+      break;
+    }
+
+    // NOTE: if you XLOG something here, this will spin forever,
+    // because you will be writing as fast as you're reading.  Any
+    // high-frequency debug diagnostics should just be written to
+    // the tombstone file.
+
+    entry = &log_entry.entry_v1;
+
+    if (first) {
+      _LOG(log, 0, "--------- %slog %s\n", tail ? "tail end of " : "", filename);
+      first = false;
+    }
+
+    // Msg format is: <priority:1><tag:N>\0<message:N>\0
+    //
+    // We want to display it in the same format as "logcat -v threadtime"
+    // (although in this case the pid is redundant).
+    static const char* kPrioChars = "!.VDIWEFS";
+    unsigned hdr_size = log_entry.entry.hdr_size;
+    if (!hdr_size) {
+      hdr_size = sizeof(log_entry.entry_v1);
+    }
+    char* msg = reinterpret_cast<char*>(log_entry.buf) + hdr_size;
+    unsigned char prio = msg[0];
+    char* tag = msg + 1;
+    msg = tag + strlen(tag) + 1;
+
+    // consume any trailing newlines
+    char* nl = msg + strlen(msg) - 1;
+    while (nl >= msg && *nl == '\n') {
+      *nl-- = '\0';
+    }
+
+    char prioChar = (prio < strlen(kPrioChars) ? kPrioChars[prio] : '?');
+
+    char timeBuf[32];
+    time_t sec = static_cast<time_t>(entry->sec);
+    struct tm tmBuf;
+    struct tm* ptm;
+    ptm = localtime_r(&sec, &tmBuf);
+    strftime(timeBuf, sizeof(timeBuf), "%m-%d %H:%M:%S", ptm);
+
+    // Look for line breaks ('\n') and display each text line
+    // on a separate line, prefixed with the header, like logcat does.
+    do {
+      nl = strchr(msg, '\n');
+      if (nl) {
+        *nl = '\0';
+        ++nl;
+      }
+
+      _LOG(log, 0, "%s.%03d %5d %5d %c %-8s: %s\n",
+         timeBuf, entry->nsec / 1000000, entry->pid, entry->tid,
+         prioChar, tag, msg);
+    } while ((msg = nl));
+  }
+
+  android_logger_list_free(logger_list);
+}
+
+// Dumps the logs generated by the specified pid to the tombstone, from both
+// "system" and "main" log devices.  Ideally we'd interleave the output.
+static void dump_logs(log_t* log, pid_t pid, unsigned int tail) {
+  dump_log_file(log, pid, "system", tail);
+  dump_log_file(log, pid, "main", tail);
+}
+
+static void dump_abort_message(Backtrace* backtrace, log_t* log, uintptr_t address) {
+  if (address == 0) {
+    return;
+  }
+
+  address += sizeof(size_t); // Skip the buffer length.
+
+  char msg[512];
+  memset(msg, 0, sizeof(msg));
+  char* p = &msg[0];
+  while (p < &msg[sizeof(msg)]) {
+    uint32_t data;
+    if (!backtrace->ReadWord(address, &data)) {
+      break;
+    }
+    address += sizeof(uint32_t);
+
+    if ((*p++ = (data >>  0) & 0xff) == 0) {
+      break;
+    }
+    if ((*p++ = (data >>  8) & 0xff) == 0) {
+      break;
+    }
+    if ((*p++ = (data >> 16) & 0xff) == 0) {
+      break;
+    }
+    if ((*p++ = (data >> 24) & 0xff) == 0) {
+      break;
+    }
+  }
+  msg[sizeof(msg) - 1] = '\0';
+
+  _LOG(log, SCOPE_AT_FAULT, "Abort message: '%s'\n", msg);
+}
+
+// Dumps all information about the specified pid to the tombstone.
+static bool dump_crash(log_t* log, pid_t pid, pid_t tid, int signal, uintptr_t abort_msg_address,
+                       bool dump_sibling_threads, int* total_sleep_time_usec) {
+  // don't copy log messages to tombstone unless this is a dev device
+  char value[PROPERTY_VALUE_MAX];
+  property_get("ro.debuggable", value, "0");
+  bool want_logs = (value[0] == '1');
+
+  if (log->amfd >= 0) {
+    // Activity Manager protocol: binary 32-bit network-byte-order ints for the
+    // pid and signal number, followed by the raw text of the dump, culminating
+    // in a zero byte that marks end-of-data.
+    uint32_t datum = htonl(pid);
+    TEMP_FAILURE_RETRY( write(log->amfd, &datum, 4) );
+    datum = htonl(signal);
+    TEMP_FAILURE_RETRY( write(log->amfd, &datum, 4) );
+  }
+
+  _LOG(log, SCOPE_AT_FAULT,
+       "*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***\n");
+  dump_build_info(log);
+  dump_revision_info(log);
+  dump_thread_info(log, pid, tid, SCOPE_AT_FAULT);
+  if (signal) {
+    dump_fault_addr(log, tid, signal);
+  }
+
+  UniquePtr<BacktraceMap> map(BacktraceMap::Create(pid));
+  UniquePtr<Backtrace> backtrace(Backtrace::Create(pid, tid, map.get()));
+  if (backtrace->Unwind(0)) {
+    dump_abort_message(backtrace.get(), log, abort_msg_address);
+    dump_thread(backtrace.get(), log, SCOPE_AT_FAULT, total_sleep_time_usec);
+  }
+
+  if (want_logs) {
+    dump_logs(log, pid, 5);
+  }
+
+  bool detach_failed = false;
+  if (dump_sibling_threads) {
+    detach_failed = dump_sibling_thread_report(log, pid, tid, total_sleep_time_usec, map.get());
+  }
+
+  if (want_logs) {
+    dump_logs(log, pid, 0);
+  }
+
+  // send EOD to the Activity Manager, then wait for its ack to avoid racing ahead
+  // and killing the target out from under it
+  if (log->amfd >= 0) {
+    uint8_t eodMarker = 0;
+    TEMP_FAILURE_RETRY( write(log->amfd, &eodMarker, 1) );
+    // 3 sec timeout reading the ack; we're fine if that happens
+    TEMP_FAILURE_RETRY( read(log->amfd, &eodMarker, 1) );
+  }
+
+  return detach_failed;
+}
+
+// find_and_open_tombstone - find an available tombstone slot, if any, of the
+// form tombstone_XX where XX is 00 to MAX_TOMBSTONES-1, inclusive. If no
+// file is available, we reuse the least-recently-modified file.
+//
+// Returns the path of the tombstone file, allocated using malloc().  Caller must free() it.
+static char* find_and_open_tombstone(int* fd) {
+  unsigned long mtime = ULONG_MAX;
+  struct stat sb;
+
+  // XXX: Our stat.st_mtime isn't time_t. If it changes, as it probably ought
+  // to, our logic breaks. This check will generate a warning if that happens.
+  typecheck(mtime, sb.st_mtime);
+
+  // In a single wolf-like pass, find an available slot and, in case none
+  // exist, find and record the least-recently-modified file.
+  char path[128];
+  int oldest = 0;
+  for (int i = 0; i < MAX_TOMBSTONES; i++) {
+    snprintf(path, sizeof(path), TOMBSTONE_DIR"/tombstone_%02d", i);
+
+    if (!stat(path, &sb)) {
+      if (sb.st_mtime < mtime) {
+        oldest = i;
+        mtime = sb.st_mtime;
+      }
+      continue;
+    }
+    if (errno != ENOENT)
+      continue;
+
+    *fd = open(path, O_CREAT | O_EXCL | O_WRONLY, 0600);
+    if (*fd < 0)
+      continue;   // raced ?
+
+    fchown(*fd, AID_SYSTEM, AID_SYSTEM);
+    return strdup(path);
+  }
+
+  // we didn't find an available file, so we clobber the oldest one
+  snprintf(path, sizeof(path), TOMBSTONE_DIR"/tombstone_%02d", oldest);
+  *fd = open(path, O_CREAT | O_TRUNC | O_WRONLY, 0600);
+  if (*fd < 0) {
+    LOG("failed to open tombstone file '%s': %s\n", path, strerror(errno));
+    return NULL;
+  }
+  fchown(*fd, AID_SYSTEM, AID_SYSTEM);
+  return strdup(path);
+}
+
+static int activity_manager_connect() {
+  int amfd = socket(PF_UNIX, SOCK_STREAM, 0);
+  if (amfd >= 0) {
+    struct sockaddr_un address;
+    int err;
+
+    memset(&address, 0, sizeof(address));
+    address.sun_family = AF_UNIX;
+    strncpy(address.sun_path, NCRASH_SOCKET_PATH, sizeof(address.sun_path));
+    err = TEMP_FAILURE_RETRY(connect(
+        amfd, reinterpret_cast<struct sockaddr*>(&address), sizeof(address)));
+    if (!err) {
+      struct timeval tv;
+      memset(&tv, 0, sizeof(tv));
+      tv.tv_sec = 1;  // tight leash
+      err = setsockopt(amfd, SOL_SOCKET, SO_SNDTIMEO, &tv, sizeof(tv));
+      if (!err) {
+        tv.tv_sec = 3;  // 3 seconds on handshake read
+        err = setsockopt(amfd, SOL_SOCKET, SO_RCVTIMEO, &tv, sizeof(tv));
+      }
+    }
+    if (err) {
+      close(amfd);
+      amfd = -1;
+    }
+  }
+
+  return amfd;
+}
+
+char* engrave_tombstone(
+    pid_t pid, pid_t tid, int signal, uintptr_t abort_msg_address, bool dump_sibling_threads,
+    bool quiet, bool* detach_failed, int* total_sleep_time_usec) {
+  mkdir(TOMBSTONE_DIR, 0755);
+  chown(TOMBSTONE_DIR, AID_SYSTEM, AID_SYSTEM);
+
+  if (selinux_android_restorecon(TOMBSTONE_DIR) == -1) {
+    *detach_failed = false;
+    return NULL;
+  }
+
+  int fd;
+  char* path = find_and_open_tombstone(&fd);
+  if (!path) {
+    *detach_failed = false;
+    return NULL;
+  }
+
+  log_t log;
+  log.tfd = fd;
+  log.amfd = activity_manager_connect();
+  log.quiet = quiet;
+  *detach_failed = dump_crash(
+      &log, pid, tid, signal, abort_msg_address, dump_sibling_threads, total_sleep_time_usec);
+
+  close(log.amfd);
+  close(fd);
+  return path;
+}
diff --git a/debuggerd/tombstone.h b/debuggerd/tombstone.h
index d4a1a96..e9878bf 100644
--- a/debuggerd/tombstone.h
+++ b/debuggerd/tombstone.h
@@ -21,8 +21,6 @@
 #include <stdbool.h>
 #include <sys/types.h>
 
-#include <corkscrew/ptrace.h>
-
 /* Creates a tombstone file and writes the crash dump to it.
  * Returns the path of the tombstone, which must be freed using free(). */
 char* engrave_tombstone(pid_t pid, pid_t tid, int signal, uintptr_t abort_msg_address,
diff --git a/debuggerd/utility.c b/debuggerd/utility.c
deleted file mode 100644
index 41be982..0000000
--- a/debuggerd/utility.c
+++ /dev/null
@@ -1,130 +0,0 @@
-/* system/debuggerd/utility.c
-**
-** Copyright 2008, The Android Open Source Project
-**
-** Licensed under the Apache License, Version 2.0 (the "License"); 
-** you may not use this file except in compliance with the License. 
-** You may obtain a copy of the License at 
-**
-**     http://www.apache.org/licenses/LICENSE-2.0 
-**
-** Unless required by applicable law or agreed to in writing, software 
-** distributed under the License is distributed on an "AS IS" BASIS, 
-** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
-** See the License for the specific language governing permissions and 
-** limitations under the License.
-*/
-
-#include <stddef.h>
-#include <stdbool.h>
-#include <stdio.h>
-#include <string.h>
-#include <errno.h>
-#include <unistd.h>
-#include <signal.h>
-#include <log/logd.h>
-#include <sys/ptrace.h>
-#include <sys/wait.h>
-#include <arpa/inet.h>
-#include <assert.h>
-
-#include "utility.h"
-
-const int sleep_time_usec = 50000;         /* 0.05 seconds */
-const int max_total_sleep_usec = 10000000; /* 10 seconds */
-
-static int write_to_am(int fd, const char* buf, int len) {
-    int to_write = len;
-    while (to_write > 0) {
-        int written = TEMP_FAILURE_RETRY( write(fd, buf + len - to_write, to_write) );
-        if (written < 0) {
-            /* hard failure */
-            LOG("AM write failure (%d / %s)\n", errno, strerror(errno));
-            return -1;
-        }
-        to_write -= written;
-    }
-    return len;
-}
-
-void _LOG(log_t* log, int scopeFlags, const char *fmt, ...) {
-    char buf[512];
-    bool want_tfd_write;
-    bool want_log_write;
-    bool want_amfd_write;
-    int len = 0;
-
-    va_list ap;
-    va_start(ap, fmt);
-
-    // where is the information going to go?
-    want_tfd_write = log && log->tfd >= 0;
-    want_log_write = IS_AT_FAULT(scopeFlags) && (!log || !log->quiet);
-    want_amfd_write = IS_AT_FAULT(scopeFlags) && !IS_SENSITIVE(scopeFlags) && log && log->amfd >= 0;
-
-    // if we're going to need the literal string, generate it once here
-    if (want_tfd_write || want_amfd_write) {
-        vsnprintf(buf, sizeof(buf), fmt, ap);
-        len = strlen(buf);
-    }
-
-    if (want_tfd_write) {
-        write(log->tfd, buf, len);
-    }
-
-    if (want_log_write) {
-        // whatever goes to logcat also goes to the Activity Manager
-        __android_log_vprint(ANDROID_LOG_INFO, "DEBUG", fmt, ap);
-        if (want_amfd_write && len > 0) {
-            int written = write_to_am(log->amfd, buf, len);
-            if (written <= 0) {
-                // timeout or other failure on write; stop informing the activity manager
-                log->amfd = -1;
-            }
-        }
-    }
-    va_end(ap);
-}
-
-int wait_for_signal(pid_t tid, int* total_sleep_time_usec) {
-    for (;;) {
-        int status;
-        pid_t n = waitpid(tid, &status, __WALL | WNOHANG);
-        if (n < 0) {
-            if(errno == EAGAIN) continue;
-            LOG("waitpid failed: %s\n", strerror(errno));
-            return -1;
-        } else if (n > 0) {
-            XLOG("waitpid: n=%d status=%08x\n", n, status);
-            if (WIFSTOPPED(status)) {
-                return WSTOPSIG(status);
-            } else {
-                LOG("unexpected waitpid response: n=%d, status=%08x\n", n, status);
-                return -1;
-            }
-        }
-
-        if (*total_sleep_time_usec > max_total_sleep_usec) {
-            LOG("timed out waiting for tid=%d to die\n", tid);
-            return -1;
-        }
-
-        /* not ready yet */
-        XLOG("not ready yet\n");
-        usleep(sleep_time_usec);
-        *total_sleep_time_usec += sleep_time_usec;
-    }
-}
-
-void wait_for_stop(pid_t tid, int* total_sleep_time_usec) {
-    siginfo_t si;
-    while (TEMP_FAILURE_RETRY(ptrace(PTRACE_GETSIGINFO, tid, 0, &si)) < 0 && errno == ESRCH) {
-        if (*total_sleep_time_usec > max_total_sleep_usec) {
-            LOG("timed out waiting for tid=%d to stop\n", tid);
-            break;
-        }
-
-        usleep(sleep_time_usec);
-        *total_sleep_time_usec += sleep_time_usec;
-    }
-}
diff --git a/debuggerd/utility.cpp b/debuggerd/utility.cpp
new file mode 100644
index 0000000..35f061e
--- /dev/null
+++ b/debuggerd/utility.cpp
@@ -0,0 +1,129 @@
+/*
+ * Copyright 2008, The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <stddef.h>
+#include <stdio.h>
+#include <string.h>
+#include <errno.h>
+#include <unistd.h>
+#include <signal.h>
+#include <log/logd.h>
+#include <sys/ptrace.h>
+#include <sys/wait.h>
+#include <arpa/inet.h>
+#include <assert.h>
+
+#include "utility.h"
+
+const int sleep_time_usec = 50000;         // 0.05 seconds
+const int max_total_sleep_usec = 10000000; // 10 seconds
+
+static int write_to_am(int fd, const char* buf, int len) {
+  int to_write = len;
+  while (to_write > 0) {
+    int written = TEMP_FAILURE_RETRY( write(fd, buf + len - to_write, to_write) );
+    if (written < 0) {
+      // hard failure
+      LOG("AM write failure (%d / %s)\n", errno, strerror(errno));
+      return -1;
+    }
+    to_write -= written;
+  }
+  return len;
+}
+
+void _LOG(log_t* log, int scopeFlags, const char* fmt, ...) {
+  char buf[512];
+  bool want_tfd_write;
+  bool want_log_write;
+  bool want_amfd_write;
+  int len = 0;
+
+  va_list ap;
+  va_start(ap, fmt);
+
+  // where is the information going to go?
+  want_tfd_write = log && log->tfd >= 0;
+  want_log_write = IS_AT_FAULT(scopeFlags) && (!log || !log->quiet);
+  want_amfd_write = IS_AT_FAULT(scopeFlags) && !IS_SENSITIVE(scopeFlags) && log && log->amfd >= 0;
+
+  // if we're going to need the literal string, generate it once here
+  if (want_tfd_write || want_amfd_write) {
+    vsnprintf(buf, sizeof(buf), fmt, ap);
+    len = strlen(buf);
+  }
+
+  if (want_tfd_write) {
+    write(log->tfd, buf, len);
+  }
+
+  if (want_log_write) {
+    // whatever goes to logcat also goes to the Activity Manager
+    __android_log_vprint(ANDROID_LOG_INFO, "DEBUG", fmt, ap);
+    if (want_amfd_write && len > 0) {
+      int written = write_to_am(log->amfd, buf, len);
+      if (written <= 0) {
+        // timeout or other failure on write; stop informing the activity manager
+        log->amfd = -1;
+      }
+    }
+  }
+  va_end(ap);
+}
+
+int wait_for_signal(pid_t tid, int* total_sleep_time_usec) {
+  for (;;) {
+    int status;
+    pid_t n = waitpid(tid, &status, __WALL | WNOHANG);
+    if (n < 0) {
+      if (errno == EAGAIN)
+        continue;
+      LOG("waitpid failed: %s\n", strerror(errno));
+      return -1;
+    } else if (n > 0) {
+      XLOG("waitpid: n=%d status=%08x\n", n, status);
+      if (WIFSTOPPED(status)) {
+        return WSTOPSIG(status);
+      } else {
+        LOG("unexpected waitpid response: n=%d, status=%08x\n", n, status);
+        return -1;
+      }
+    }
+
+    if (*total_sleep_time_usec > max_total_sleep_usec) {
+      LOG("timed out waiting for tid=%d to die\n", tid);
+      return -1;
+    }
+
+    // not ready yet
+    XLOG("not ready yet\n");
+    usleep(sleep_time_usec);
+    *total_sleep_time_usec += sleep_time_usec;
+  }
+}
+
+void wait_for_stop(pid_t tid, int* total_sleep_time_usec) {
+  siginfo_t si;
+  while (TEMP_FAILURE_RETRY(ptrace(PTRACE_GETSIGINFO, tid, 0, &si)) < 0 && errno == ESRCH) {
+    if (*total_sleep_time_usec > max_total_sleep_usec) {
+      LOG("timed out waiting for tid=%d to stop\n", tid);
+      break;
+    }
+
+    usleep(sleep_time_usec);
+    *total_sleep_time_usec += sleep_time_usec;
+  }
+}
diff --git a/debuggerd/x86/machine.c b/debuggerd/x86/machine.c
deleted file mode 100644
index db44b11..0000000
--- a/debuggerd/x86/machine.c
+++ /dev/null
@@ -1,46 +0,0 @@
-/*
-** Copyright 2006, The Android Open Source Project
-**
-** Licensed under the Apache License, Version 2.0 (the "License");
-** you may not use this file except in compliance with the License.
-** You may obtain a copy of the License at
-**
-**     http://www.apache.org/licenses/LICENSE-2.0
-**
-** Unless required by applicable law or agreed to in writing, software
-** distributed under the License is distributed on an "AS IS" BASIS,
-** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-** See the License for the specific language governing permissions and
-** limitations under the License.
-*/
-
-#include <stddef.h>
-#include <stdbool.h>
-#include <stdlib.h>
-#include <string.h>
-#include <stdio.h>
-#include <errno.h>
-#include <sys/types.h>
-#include <sys/ptrace.h>
-
-#include "../utility.h"
-#include "../machine.h"
-
-void dump_memory_and_code(log_t* log, pid_t tid, int scope_flags) {
-}
-
-void dump_registers(log_t* log, pid_t tid, int scope_flags) {
-    struct pt_regs r;
-    if (ptrace(PTRACE_GETREGS, tid, 0, &r) == -1) {
-        _LOG(log, scope_flags, "cannot get registers: %s\n", strerror(errno));
-        return;
-    }
-    _LOG(log, scope_flags, "    eax %08lx  ebx %08lx  ecx %08lx  edx %08lx\n",
-         r.eax, r.ebx, r.ecx, r.edx);
-    _LOG(log, scope_flags, "    esi %08lx  edi %08lx\n",
-         r.esi, r.edi);
-    _LOG(log, scope_flags, "    xcs %08x  xds %08x  xes %08x  xfs %08x  xss %08x\n",
-         r.xcs, r.xds, r.xes, r.xfs, r.xss);
-    _LOG(log, scope_flags, "    eip %08lx  ebp %08lx  esp %08lx  flags %08lx\n",
-         r.eip, r.ebp, r.esp, r.eflags);
-}
diff --git a/debuggerd/x86/machine.cpp b/debuggerd/x86/machine.cpp
new file mode 100644
index 0000000..141f19a
--- /dev/null
+++ b/debuggerd/x86/machine.cpp
@@ -0,0 +1,45 @@
+/*
+ * Copyright 2006, The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <stddef.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+#include <errno.h>
+#include <sys/types.h>
+#include <sys/ptrace.h>
+
+#include "../utility.h"
+#include "../machine.h"
+
+void dump_memory_and_code(log_t* log, pid_t tid, int scope_flags) {
+}
+
+void dump_registers(log_t* log, pid_t tid, int scope_flags) {
+  struct pt_regs r;
+  if (ptrace(PTRACE_GETREGS, tid, 0, &r) == -1) {
+    _LOG(log, scope_flags, "cannot get registers: %s\n", strerror(errno));
+    return;
+  }
+  _LOG(log, scope_flags, "    eax %08lx  ebx %08lx  ecx %08lx  edx %08lx\n",
+       r.eax, r.ebx, r.ecx, r.edx);
+  _LOG(log, scope_flags, "    esi %08lx  edi %08lx\n",
+       r.esi, r.edi);
+  _LOG(log, scope_flags, "    xcs %08x  xds %08x  xes %08x  xfs %08x  xss %08x\n",
+       r.xcs, r.xds, r.xes, r.xfs, r.xss);
+  _LOG(log, scope_flags, "    eip %08lx  ebp %08lx  esp %08lx  flags %08lx\n",
+       r.eip, r.ebp, r.esp, r.eflags);
+}
diff --git a/fastboot/fastboot.c b/fastboot/fastboot.c
index 73a6e56..7d26c6f 100644
--- a/fastboot/fastboot.c
+++ b/fastboot/fastboot.c
@@ -889,6 +889,7 @@
         {"kernel_offset", required_argument, 0, 'k'},
         {"page_size", required_argument, 0, 'n'},
         {"ramdisk_offset", required_argument, 0, 'r'},
+        {"tags_offset", required_argument, 0, 't'},
         {"help", 0, 0, 'h'},
         {0, 0, 0, 0}
     };
@@ -897,7 +898,7 @@
 
     while (1) {
         int option_index = 0;
-        c = getopt_long(argc, argv, "wub:k:n:r:s:S:lp:c:i:m:h", longopts, NULL);
+        c = getopt_long(argc, argv, "wub:k:n:r:t:s:S:lp:c:i:m:h", longopts, NULL);
         if (c < 0) {
             break;
         }
@@ -938,6 +939,9 @@
         case 'r':
             ramdisk_offset = strtoul(optarg, 0, 16);
             break;
+        case 't':
+            tags_offset = strtoul(optarg, 0, 16);
+            break;
         case 's':
             serial = optarg;
             break;
diff --git a/fastbootd/commands.c b/fastbootd/commands.c
index d8a601f..063e1a6 100644
--- a/fastbootd/commands.c
+++ b/fastbootd/commands.c
@@ -29,6 +29,7 @@
  * SUCH DAMAGE.
  */
 
+#include <inttypes.h>
 #include <stdlib.h>
 #include <unistd.h>
 #include <sys/types.h>
@@ -319,7 +320,7 @@
         return;
     }
 
-    D(INFO, "writing %lld bytes to '%s'\n", sz, arg);
+    D(INFO, "writing %"PRId64" bytes to '%s'\n", sz, arg);
 
     if (flash_write(partition, phandle->download_fd, sz, header_sz)) {
         fastboot_fail(phandle, "flash write failure");
diff --git a/fastbootd/commands/flash.c b/fastbootd/commands/flash.c
index 0954217..1eb4d1b 100644
--- a/fastbootd/commands/flash.c
+++ b/fastbootd/commands/flash.c
@@ -31,6 +31,7 @@
 
 #include <sys/stat.h>
 #include <fcntl.h>
+#include <inttypes.h>
 #include <sys/mman.h>
 
 #include "flash.h"
@@ -82,7 +83,7 @@
 {
     int64_t size;
     size = get_block_device_size(fd);
-    D(DEBUG, "erase %llu data from %d\n", size, fd);
+    D(DEBUG, "erase %"PRId64" data from %d\n", size, fd);
 
     return wipe_block_device(fd, size);
 }
@@ -97,7 +98,7 @@
         int current_size = MIN(size - written, BUFFER_SIZE);
 
         if (gpt_mmap(&input, written + skip, current_size, data_fd)) {
-            D(ERR, "Error in writing data, unable to map data file %d at %d size %d", size, skip, current_size);
+            D(ERR, "Error in writing data, unable to map data file %zd at %zd size %d", size, skip, current_size);
             return -1;
         }
         if (gpt_mmap(&output, written, current_size, partition_fd)) {
diff --git a/fastbootd/commands/partitions.c b/fastbootd/commands/partitions.c
index de80ea3..74232e6 100644
--- a/fastbootd/commands/partitions.c
+++ b/fastbootd/commands/partitions.c
@@ -42,6 +42,7 @@
 #include <sys/ioctl.h>
 #include <stdlib.h>
 #include <cutils/config_utils.h>
+#include <inttypes.h>
 
 #include "partitions.h"
 #include "debug.h"
@@ -80,7 +81,7 @@
 
     uint64_t sz = get_file_size64(fd);
     if (sz < size + location) {
-        D(ERR, "the location of mapping area is outside of the device size %lld", sz);
+        D(ERR, "the location of mapping area is outside of the device size %" PRId64, sz);
         return 1;
     }
     location = ALIGN_DOWN(location, PAGE_SIZE);
@@ -89,7 +90,7 @@
 
     if (mapping->map_ptr == MAP_FAILED) {
         mapping->ptr = MAP_FAILED;
-        D(ERR, "map failed %d", (int) mapping->map_ptr);
+        D(ERR, "map failed: %s", strerror(errno));
         return 1;
     }
 
diff --git a/fastbootd/other/gptedit.c b/fastbootd/other/gptedit.c
index 16d34a5..d423529 100644
--- a/fastbootd/other/gptedit.c
+++ b/fastbootd/other/gptedit.c
@@ -29,9 +29,10 @@
  * SUCH DAMAGE.
  */
 
+#include <getopt.h>
+#include <inttypes.h>
 #include <stdio.h>
 #include <stdlib.h>
-#include <getopt.h>
 #include <unistd.h>
 
 #include <cutils/klog.h>
@@ -185,7 +186,7 @@
             name[m] = entry->name[m] & 127;
         }
         name[m] = 0;
-        printf("#%03d %13lld %13lld %s\n",
+        printf("#%03d %13"PRId64" %13"PRId64" %s\n",
             n + 1, entry->first_lba, entry->last_lba, name);
     }
 }
@@ -197,11 +198,11 @@
     char temp_guid[17];
     temp_guid[16] = 0;
 
-    printf("header_lba %lld\n", table->header->current_lba);
-    printf("backup_lba %lld\n", table->header->backup_lba);
-    printf("first_lba %lld\n", table->header->first_usable_lba);
-    printf("last_lba %lld\n", table->header->last_usable_lba);
-    printf("entries_lba %lld\n", table->header->entries_lba);
+    printf("header_lba %"PRId64"\n", table->header->current_lba);
+    printf("backup_lba %"PRId64"\n", table->header->backup_lba);
+    printf("first_lba %"PRId64"\n", table->header->first_usable_lba);
+    printf("last_lba %"PRId64"\n", table->header->last_usable_lba);
+    printf("entries_lba %"PRId64"\n", table->header->entries_lba);
     snprintf(temp_guid, 17, "%s", table->header->disk_guid);
     printf("guid \"%s\"", temp_guid);
 
@@ -220,8 +221,8 @@
         printf("    %s {\n", name);
         snprintf(temp_guid, 17, "%s", entry->partition_guid);
         printf("        guid \"%s\"\n", temp_guid);
-        printf("        first_lba %lld\n", entry->first_lba);
-        printf("        partition_size %lld\n", size);
+        printf("        first_lba %"PRId64"\n", entry->first_lba);
+        printf("        partition_size %"PRId64"\n", size);
         if (entry->flags & GPT_FLAG_SYSTEM)
             printf("        system\n");
         if (entry->flags & GPT_FLAG_BOOTABLE)
diff --git a/fastbootd/secure.c b/fastbootd/secure.c
index a657ad4..186e026 100644
--- a/fastbootd/secure.c
+++ b/fastbootd/secure.c
@@ -151,7 +151,7 @@
         char buf[256];
         unsigned long err = ERR_peek_last_error();
         D(ERR, "Verification failed with reason: %s, %s", ERR_lib_error_string(err),  ERR_error_string(err, buf));
-        D(ERR, "Data used: content %d", (int) content);
+        D(ERR, "Data used: content %p", content);
     }
 
     ERR_clear_error();
diff --git a/fastbootd/transport.c b/fastbootd/transport.c
index 19a705c..ce8f9d0 100644
--- a/fastbootd/transport.c
+++ b/fastbootd/transport.c
@@ -56,14 +56,14 @@
 
     buffer = mmap(NULL, len, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
     if (buffer == NULL) {
-        D(ERR, "mmap(%u) failed: %d %s", len, errno, strerror(errno));
+        D(ERR, "mmap(%zu) failed: %d %s", len, errno, strerror(errno));
         goto err;
     }
 
     while (n < len) {
         ret = thandle->transport->read(thandle, buffer + n, len - n);
         if (ret <= 0) {
-            D(WARN, "transport read failed, ret=%d %s", ret, strerror(-ret));
+            D(WARN, "transport read failed, ret=%zd %s", ret, strerror(-ret));
             break;
         }
         n += ret;
diff --git a/fastbootd/transport_socket.c b/fastbootd/transport_socket.c
index ff0f3bd..664d473 100644
--- a/fastbootd/transport_socket.c
+++ b/fastbootd/transport_socket.c
@@ -88,7 +88,7 @@
     ssize_t ret;
     struct socket_handle *handle = container_of(thandle, struct socket_handle, handle);
 
-    D(DEBUG, "about to write (fd=%d, len=%d)", handle->fd, len);
+    D(DEBUG, "about to write (fd=%d, len=%zu)", handle->fd, len);
     ret = bulk_write(handle->fd, data, len);
     if (ret < 0) {
         D(ERR, "ERROR: fd = %d, ret = %zd", handle->fd, ret);
@@ -103,7 +103,7 @@
     ssize_t ret;
     struct socket_handle *handle = container_of(thandle, struct socket_handle, handle);
 
-    D(DEBUG, "about to read (fd=%d, len=%d)", handle->fd, len);
+    D(DEBUG, "about to read (fd=%d, len=%zu)", handle->fd, len);
     ret = bulk_read(handle->fd, data, len);
     if (ret < 0) {
         D(ERR, "ERROR: fd = %d, ret = %zd", handle->fd, ret);
diff --git a/fastbootd/usb_linux_client.c b/fastbootd/usb_linux_client.c
index 7a8e46f..64420e9 100644
--- a/fastbootd/usb_linux_client.c
+++ b/fastbootd/usb_linux_client.c
@@ -217,7 +217,7 @@
     struct transport *t = thandle->transport;
     struct usb_transport *usb_transport = container_of(t, struct usb_transport, transport);
 
-    D(DEBUG, "about to write (fd=%d, len=%d)", usb_transport->bulk_in, len);
+    D(DEBUG, "about to write (fd=%d, len=%zu)", usb_transport->bulk_in, len);
     ret = bulk_write(usb_transport->bulk_in, data, len);
     if (ret < 0) {
         D(ERR, "ERROR: fd = %d, ret = %zd", usb_transport->bulk_in, ret);
@@ -233,7 +233,7 @@
     struct transport *t = thandle->transport;
     struct usb_transport *usb_transport = container_of(t, struct usb_transport, transport);
 
-    D(DEBUG, "about to read (fd=%d, len=%d)", usb_transport->bulk_out, len);
+    D(DEBUG, "about to read (fd=%d, len=%zu)", usb_transport->bulk_out, len);
     ret = bulk_read(usb_transport->bulk_out, data, len);
     if (ret < 0) {
         D(ERR, "ERROR: fd = %d, ret = %zd", usb_transport->bulk_out, ret);
diff --git a/fastbootd/utils.c b/fastbootd/utils.c
index fe3f0f8..bef2463 100644
--- a/fastbootd/utils.c
+++ b/fastbootd/utils.c
@@ -169,7 +169,7 @@
     do {
         ret = TEMP_FAILURE_RETRY(write(bulk_in, buf + count, length - count));
         if (ret < 0) {
-            D(WARN, "[ bulk_write failed fd=%d length=%d errno=%d %s ]",
+            D(WARN, "[ bulk_write failed fd=%d length=%zu errno=%d %s ]",
                     bulk_in, length, errno, strerror(errno));
             return -1;
         } else {
@@ -190,13 +190,13 @@
         size_t to_read = (length - n > READ_BUF_SIZE) ? READ_BUF_SIZE : length - n;
         ret = TEMP_FAILURE_RETRY(read(bulk_out, buf + n, to_read));
         if (ret < 0) {
-            D(WARN, "[ bulk_read failed fd=%d length=%d errno=%d %s ]",
+            D(WARN, "[ bulk_read failed fd=%d length=%zu errno=%d %s ]",
                     bulk_out, length, errno, strerror(errno));
             return ret;
         }
         n += ret;
         if (ret < (ssize_t)to_read) {
-            D(VERBOSE, "bulk_read short read, ret=%zd to_read=%u n=%u length=%u",
+            D(VERBOSE, "bulk_read short read, ret=%zd to_read=%zu n=%zu length=%zu",
                     ret, to_read, n, length);
             break;
         }
diff --git a/fs_mgr/fs_mgr.c b/fs_mgr/fs_mgr.c
index 6d9d20c..24ce806 100644
--- a/fs_mgr/fs_mgr.c
+++ b/fs_mgr/fs_mgr.c
@@ -517,6 +517,7 @@
     int encrypted = 0;
     int ret = -1;
     int mret;
+    int mount_errno;
 
     if (!fstab) {
         return ret;
@@ -560,6 +561,9 @@
             continue;
         }
 
+        /* back up errno as partition_wipe clobbers the value */
+        mount_errno = errno;
+
         /* mount(2) returned an error, check if it's encrypted and deal with it */
         if ((fstab->recs[i].fs_mgr_flags & MF_CRYPT) &&
             !partition_wiped(fstab->recs[i].blk_device)) {
@@ -568,14 +572,16 @@
              */
             if (mount("tmpfs", fstab->recs[i].mount_point, "tmpfs",
                   MS_NOATIME | MS_NOSUID | MS_NODEV, CRYPTO_TMPFS_OPTIONS) < 0) {
-                ERROR("Cannot mount tmpfs filesystem for encrypted fs at %s\n",
-                        fstab->recs[i].mount_point);
+                ERROR("Cannot mount tmpfs filesystem for encrypted fs at %s error: %s\n",
+                        fstab->recs[i].mount_point, strerror(errno));
                 goto out;
             }
             encrypted = 1;
         } else {
-            ERROR("Cannot mount filesystem on %s at %s\n",
-                    fstab->recs[i].blk_device, fstab->recs[i].mount_point);
+            ERROR("Failed to mount an un-encryptable or wiped partition on"
+                    "%s at %s options: %s error: %s\n",
+                    fstab->recs[i].blk_device, fstab->recs[i].mount_point,
+                    fstab->recs[i].fs_options, strerror(mount_errno));
             goto out;
         }
     }
@@ -644,8 +650,8 @@
         }
         if (__mount(n_blk_device, m, fstab->recs[i].fs_type,
                     fstab->recs[i].flags, fstab->recs[i].fs_options)) {
-            ERROR("Cannot mount filesystem on %s at %s\n",
-                    n_blk_device, m);
+            ERROR("Cannot mount filesystem on %s at %s options: %s error: %s\n",
+                n_blk_device, m, fstab->recs[i].fs_options, strerror(errno));
             goto out;
         } else {
             ret = 0;
diff --git a/fs_mgr/fs_mgr_verity.c b/fs_mgr/fs_mgr_verity.c
index 969eab2..1549316 100644
--- a/fs_mgr/fs_mgr_verity.c
+++ b/fs_mgr/fs_mgr_verity.c
@@ -14,6 +14,7 @@
  * limitations under the License.
  */
 
+#include <inttypes.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
@@ -178,7 +179,7 @@
         goto out;
     }
     if (magic_number != VERITY_METADATA_MAGIC_NUMBER) {
-        ERROR("Couldn't find verity metadata at offset %llu!\n", device_length);
+        ERROR("Couldn't find verity metadata at offset %"PRIu64"!\n", device_length);
         goto out;
     }
 
diff --git a/include/backtrace/Backtrace.h b/include/backtrace/Backtrace.h
index bf4efd3..bd4134c 100644
--- a/include/backtrace/Backtrace.h
+++ b/include/backtrace/Backtrace.h
@@ -17,10 +17,25 @@
 #ifndef _BACKTRACE_BACKTRACE_H
 #define _BACKTRACE_BACKTRACE_H
 
-#include <backtrace/backtrace.h>
+#include <stdint.h>
 
 #include <string>
+#include <vector>
 
+#include <backtrace/backtrace_constants.h>
+#include <backtrace/BacktraceMap.h>
+
+struct backtrace_frame_data_t {
+  size_t num;             // The current fame number.
+  uintptr_t pc;           // The absolute pc.
+  uintptr_t sp;           // The top of the stack.
+  size_t stack_size;      // The size of the stack, zero indicate an unknown stack size.
+  const backtrace_map_t* map;   // The map associated with the given pc.
+  std::string func_name;  // The function name associated with this pc, NULL if not found.
+  uintptr_t func_offset;  // pc relative to the start of the function, only valid if func_name is not NULL.
+};
+
+// Forward declarations.
 class BacktraceImpl;
 
 class Backtrace {
@@ -33,9 +48,9 @@
   // If pid >= 0 and tid < 0, then the Backtrace object corresponds to a
   // different process.
   // Tracing a thread in a different process is not supported.
-  // If map_info is NULL, then create the map and manage it internally.
-  // If map_info is not NULL, the map is still owned by the caller.
-  static Backtrace* Create(pid_t pid, pid_t tid, backtrace_map_info_t* map_info = NULL);
+  // If map is NULL, then create the map and manage it internally.
+  // If map is not NULL, the map is still owned by the caller.
+  static Backtrace* Create(pid_t pid, pid_t tid, BacktraceMap* map = NULL);
 
   virtual ~Backtrace();
 
@@ -46,13 +61,8 @@
   // If the string is empty, then no valid function name was found.
   virtual std::string GetFunctionName(uintptr_t pc, uintptr_t* offset);
 
-  // Get the name of the map associated with the given pc. If NULL is returned,
-  // then map_start is not set. Otherwise, map_start is the beginning of this
-  // map.
-  virtual const char* GetMapName(uintptr_t pc, uintptr_t* map_start);
-
-  // Finds the memory map associated with the given ptr.
-  virtual const backtrace_map_info_t* FindMapInfo(uintptr_t ptr);
+  // Find the map associated with the given pc.
+  virtual const backtrace_map_t* FindMap(uintptr_t pc);
 
   // Read the data at a specific address.
   virtual bool ReadWord(uintptr_t ptr, uint32_t* out_value) = 0;
@@ -60,30 +70,46 @@
   // Create a string representing the formatted line of backtrace information
   // for a single frame.
   virtual std::string FormatFrameData(size_t frame_num);
+  virtual std::string FormatFrameData(const backtrace_frame_data_t* frame);
 
-  pid_t Pid() { return backtrace_.pid; }
-  pid_t Tid() { return backtrace_.tid; }
-  size_t NumFrames() { return backtrace_.num_frames; }
-
-  const backtrace_t* GetBacktrace() { return &backtrace_; }
+  pid_t Pid() { return pid_; }
+  pid_t Tid() { return tid_; }
+  size_t NumFrames() { return frames_.size(); }
 
   const backtrace_frame_data_t* GetFrame(size_t frame_num) {
-    return &backtrace_.frames[frame_num];
+    if (frame_num >= frames_.size()) {
+      return NULL;
+    }
+    return &frames_[frame_num];
   }
 
+  typedef std::vector<backtrace_frame_data_t>::iterator iterator;
+  iterator begin() { return frames_.begin(); }
+  iterator end() { return frames_.end(); }
+
+  typedef std::vector<backtrace_frame_data_t>::const_iterator const_iterator;
+  const_iterator begin() const { return frames_.begin(); }
+  const_iterator end() const { return frames_.end(); }
+
+  BacktraceMap* GetMap() { return map_; }
+
 protected:
-  Backtrace(BacktraceImpl* impl, pid_t pid, backtrace_map_info_t* map_info);
+  Backtrace(BacktraceImpl* impl, pid_t pid, BacktraceMap* map);
 
   virtual bool VerifyReadWordArgs(uintptr_t ptr, uint32_t* out_value);
 
+  bool BuildMap();
+
+  pid_t pid_;
+  pid_t tid_;
+
+  BacktraceMap* map_;
+  bool map_shared_;
+
+  std::vector<backtrace_frame_data_t> frames_;
+
   BacktraceImpl* impl_;
 
-  backtrace_map_info_t* map_info_;
-
-  bool map_info_requires_delete_;
-
-  backtrace_t backtrace_;
-
   friend class BacktraceImpl;
 };
 
diff --git a/include/backtrace/BacktraceMap.h b/include/backtrace/BacktraceMap.h
new file mode 100644
index 0000000..06da2f4
--- /dev/null
+++ b/include/backtrace/BacktraceMap.h
@@ -0,0 +1,83 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef _BACKTRACE_BACKTRACE_MAP_H
+#define _BACKTRACE_BACKTRACE_MAP_H
+
+#include <stdint.h>
+#ifdef USE_MINGW
+// MINGW does not define these constants.
+#define PROT_NONE 0
+#define PROT_READ 0x1
+#define PROT_WRITE 0x2
+#define PROT_EXEC 0x4
+#else
+#include <sys/mman.h>
+#endif
+
+#include <deque>
+#include <string>
+
+struct backtrace_map_t {
+  uintptr_t start;
+  uintptr_t end;
+  int flags;
+  std::string name;
+};
+
+class BacktraceMap {
+public:
+  static BacktraceMap* Create(pid_t pid);
+
+  virtual ~BacktraceMap();
+
+  // Get the map data structure for the given address.
+  const backtrace_map_t* Find(uintptr_t addr);
+
+  // The flags returned are the same flags as used by the mmap call.
+  // The values are PROT_*.
+  int GetFlags(uintptr_t pc) {
+    const backtrace_map_t* map = Find(pc);
+    if (map) {
+      return map->flags;
+    }
+    return PROT_NONE;
+  }
+
+  bool IsReadable(uintptr_t pc) { return GetFlags(pc) & PROT_READ; }
+  bool IsWritable(uintptr_t pc) { return GetFlags(pc) & PROT_WRITE; }
+  bool IsExecutable(uintptr_t pc) { return GetFlags(pc) & PROT_EXEC; }
+
+  typedef std::deque<backtrace_map_t>::iterator iterator;
+  iterator begin() { return maps_.begin(); }
+  iterator end() { return maps_.end(); }
+
+  typedef std::deque<backtrace_map_t>::const_iterator const_iterator;
+  const_iterator begin() const { return maps_.begin(); }
+  const_iterator end() const { return maps_.end(); }
+
+  virtual bool Build();
+
+protected:
+  BacktraceMap(pid_t pid);
+
+  virtual bool ParseLine(const char* line, backtrace_map_t* map);
+
+  std::deque<backtrace_map_t> maps_;
+  pid_t pid_;
+};
+
+#endif // _BACKTRACE_BACKTRACE_MAP_H
diff --git a/include/backtrace/backtrace.h b/include/backtrace/backtrace.h
deleted file mode 100644
index fa81f21..0000000
--- a/include/backtrace/backtrace.h
+++ /dev/null
@@ -1,130 +0,0 @@
-/*
- * Copyright (C) 2013 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef _BACKTRACE_H
-#define _BACKTRACE_H
-
-#include <stdint.h>
-#include <stdbool.h>
-#include <sys/types.h>
-
-__BEGIN_DECLS
-
-// When the pid to be traced is set to this value, then trace the current
-// process. If the tid value is not BACKTRACE_NO_TID, then the specified
-// thread from the current process will be traced.
-#define BACKTRACE_CURRENT_PROCESS -1
-// When the tid to be traced is set to this value, then trace the specified
-// current thread of the specified pid.
-#define BACKTRACE_CURRENT_THREAD -1
-
-#define MAX_BACKTRACE_FRAMES 64
-
-typedef struct backtrace_map_info {
-  struct backtrace_map_info* next;
-  uintptr_t start;
-  uintptr_t end;
-  bool is_readable;
-  bool is_writable;
-  bool is_executable;
-  char name[];
-} backtrace_map_info_t;
-
-typedef struct {
-  uintptr_t pc;           /* The absolute pc. */
-  uintptr_t sp;           /* The top of the stack. */
-  size_t stack_size;      /* The size of the stack, zero indicate an unknown stack size. */
-  const char* map_name;   /* The name of the map to which this pc belongs, NULL indicates the pc doesn't belong to a known map. */
-  uintptr_t map_offset;   /* pc relative to the start of the map, only valid if map_name is not NULL. */
-  char* func_name;        /* The function name associated with this pc, NULL if not found. */
-  uintptr_t func_offset;  /* pc relative to the start of the function, only valid if func_name is not NULL. */
-} backtrace_frame_data_t;
-
-typedef struct {
-  backtrace_frame_data_t frames[MAX_BACKTRACE_FRAMES];
-  size_t num_frames;
-
-  pid_t pid;
-  pid_t tid;
-  backtrace_map_info_t* map_info_list;
-} backtrace_t;
-
-typedef struct {
-  void* data;
-  const backtrace_t* backtrace;
-} backtrace_context_t;
-
-/* Create a context for the backtrace data and gather the backtrace.
- * If pid < 0, then gather the backtrace for the current process.
- */
-bool backtrace_create_context(
-    backtrace_context_t* context, pid_t pid, pid_t tid, size_t num_ignore_frames);
-
-/* The same as backtrace_create_context, except that it is assumed that
- * the pid map has already been acquired and the caller will handle freeing
- * the map data.
- */
-bool backtrace_create_context_with_map(
-    backtrace_context_t* context, pid_t pid, pid_t tid, size_t num_ignore_frames,
-    backtrace_map_info_t* map_info);
-
-/* Gather the backtrace data for a pthread instead of a process. */
-bool backtrace_create_thread_context(
-    backtrace_context_t* context, pid_t tid, size_t num_ignore_frames);
-
-/* Free any memory allocated during the context create. */
-void backtrace_destroy_context(backtrace_context_t* context);
-
-/* Read data at a specific address for a process. */
-bool backtrace_read_word(
-    const backtrace_context_t* context, uintptr_t ptr, uint32_t* value);
-
-/* Get information about the map name associated with a pc. If NULL is
- * returned, then map_start is not set.
- */
-const char* backtrace_get_map_name(
-    const backtrace_context_t* context, uintptr_t pc, uintptr_t* map_start);
-
-/* Get the function name and offset given the pc. If NULL is returned,
- * then func_offset is not set. The returned string is allocated using
- * malloc and must be freed by the caller.
- */
-char* backtrace_get_func_name(
-    const backtrace_context_t* context, uintptr_t pc, uintptr_t* func_offset);
-
-/* Loads memory map from /proc/<pid>/maps. If pid < 0, then load the memory
- * map for the current process.
- */
-backtrace_map_info_t* backtrace_create_map_info_list(pid_t pid);
-
-/* Frees memory associated with the map list. */
-void backtrace_destroy_map_info_list(backtrace_map_info_t* map_info_list);
-
-/* Finds the memory map that contains the specified pc. */
-const backtrace_map_info_t* backtrace_find_map_info(
-    const backtrace_map_info_t* map_info_list, uintptr_t pc);
-
-/* Create a formatted line of backtrace information for a single frame. */
-void backtrace_format_frame_data(
-    const backtrace_context_t* context, size_t frame_num, char* buf,
-    size_t buf_size);
-
-/* Get the backtrace data structure associated with the context. */
-const backtrace_t* backtrace_get_data(backtrace_context_t* context);
-
-__END_DECLS
-
-#endif /* _BACKTRACE_H */
diff --git a/include/backtrace/backtrace_constants.h b/include/backtrace/backtrace_constants.h
new file mode 100644
index 0000000..f8c1575
--- /dev/null
+++ b/include/backtrace/backtrace_constants.h
@@ -0,0 +1,30 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef _BACKTRACE_BACKTRACE_CONSTANTS_H
+#define _BACKTRACE_BACKTRACE_CONSTANTS_H
+
+// When the pid to be traced is set to this value, then trace the current
+// process. If the tid value is not BACKTRACE_NO_TID, then the specified
+// thread from the current process will be traced.
+#define BACKTRACE_CURRENT_PROCESS -1
+// When the tid to be traced is set to this value, then trace the specified
+// current thread of the specified pid.
+#define BACKTRACE_CURRENT_THREAD -1
+
+#define MAX_BACKTRACE_FRAMES 64
+
+#endif // _BACKTRACE_BACKTRACE_CONSTANTS_H
diff --git a/include/cutils/atomic-arm64.h b/include/cutils/atomic-arm64.h
new file mode 100644
index 0000000..4562ad0
--- /dev/null
+++ b/include/cutils/atomic-arm64.h
@@ -0,0 +1,227 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef ANDROID_CUTILS_ATOMIC_AARCH64_H
+#define ANDROID_CUTILS_ATOMIC_AARCH64_H
+
+#include <stdint.h>
+
+#ifndef ANDROID_ATOMIC_INLINE
+#define ANDROID_ATOMIC_INLINE inline __attribute__((always_inline))
+#endif
+
+/*
+   TODOAArch64: Revisit the below functions and check for potential
+   optimizations using assembly code or otherwise.
+*/
+
+extern ANDROID_ATOMIC_INLINE
+void android_compiler_barrier(void)
+{
+    __asm__ __volatile__ ("" : : : "memory");
+}
+
+#if ANDROID_SMP == 0
+extern ANDROID_ATOMIC_INLINE
+void android_memory_barrier(void)
+{
+    android_compiler_barrier();
+}
+extern ANDROID_ATOMIC_INLINE
+void android_memory_store_barrier(void)
+{
+    android_compiler_barrier();
+}
+#else
+extern ANDROID_ATOMIC_INLINE
+void android_memory_barrier(void)
+{
+    __asm__ __volatile__ ("dmb ish" : : : "memory");
+}
+extern ANDROID_ATOMIC_INLINE
+void android_memory_store_barrier(void)
+{
+    __asm__ __volatile__ ("dmb ishst" : : : "memory");
+}
+#endif
+
+extern ANDROID_ATOMIC_INLINE
+int32_t android_atomic_acquire_load(volatile const int32_t *ptr)
+{
+    int32_t value = *ptr;
+    android_memory_barrier();
+    return value;
+}
+
+extern ANDROID_ATOMIC_INLINE
+int64_t android_atomic_acquire_load64(volatile const int64_t *ptr)
+{
+    int64_t value = *ptr;
+    android_memory_barrier();
+    return value;
+}
+
+extern ANDROID_ATOMIC_INLINE
+int32_t android_atomic_release_load(volatile const int32_t *ptr)
+{
+    android_memory_barrier();
+    return *ptr;
+}
+
+extern ANDROID_ATOMIC_INLINE
+int64_t android_atomic_release_load64(volatile const int64_t *ptr)
+{
+    android_memory_barrier();
+    return *ptr;
+}
+
+extern ANDROID_ATOMIC_INLINE
+void android_atomic_acquire_store(int32_t value, volatile int32_t *ptr)
+{
+    *ptr = value;
+    android_memory_barrier();
+}
+
+extern ANDROID_ATOMIC_INLINE
+void android_atomic_acquire_store64(int64_t value, volatile int64_t *ptr)
+{
+    *ptr = value;
+    android_memory_barrier();
+}
+
+extern ANDROID_ATOMIC_INLINE
+void android_atomic_release_store(int32_t value, volatile int32_t *ptr)
+{
+    android_memory_barrier();
+    *ptr = value;
+}
+
+extern ANDROID_ATOMIC_INLINE
+void android_atomic_release_store64(int64_t value, volatile int64_t *ptr)
+{
+    android_memory_barrier();
+    *ptr = value;
+}
+
+extern ANDROID_ATOMIC_INLINE
+int android_atomic_cas(int32_t old_value, int32_t new_value,
+                       volatile int32_t *ptr)
+{
+    return __sync_val_compare_and_swap(ptr, old_value, new_value) != old_value;
+}
+
+extern ANDROID_ATOMIC_INLINE
+int64_t android_atomic_cas64(int64_t old_value, int64_t new_value,
+                             volatile int64_t *ptr)
+{
+    return __sync_val_compare_and_swap(ptr, old_value, new_value) != old_value;
+}
+
+extern ANDROID_ATOMIC_INLINE
+int android_atomic_acquire_cas(int32_t old_value, int32_t new_value,
+                               volatile int32_t *ptr)
+{
+    int status = android_atomic_cas(old_value, new_value, ptr);
+    android_memory_barrier();
+    return status;
+}
+
+extern ANDROID_ATOMIC_INLINE
+int64_t android_atomic_acquire_cas64(int64_t old_value, int64_t new_value,
+                                     volatile int64_t *ptr)
+{
+    int status = android_atomic_cas64(old_value, new_value, ptr);
+    android_memory_barrier();
+    return status;
+}
+
+extern ANDROID_ATOMIC_INLINE
+int android_atomic_release_cas(int32_t old_value, int32_t new_value,
+                               volatile int32_t *ptr)
+{
+    android_memory_barrier();
+    return android_atomic_cas(old_value, new_value, ptr);
+}
+
+extern ANDROID_ATOMIC_INLINE
+int64_t android_atomic_release_cas64(int64_t old_value, int64_t new_value,
+                                     volatile int64_t *ptr)
+{
+    android_memory_barrier();
+    return android_atomic_cas64(old_value, new_value, ptr);
+}
+
+extern ANDROID_ATOMIC_INLINE
+int32_t android_atomic_add(int32_t increment, volatile int32_t *ptr)
+{
+    int32_t prev, status;
+    android_memory_barrier();
+    do {
+        prev = *ptr;
+        status = android_atomic_cas(prev, prev + increment, ptr);
+    } while (__builtin_expect(status != 0, 0));
+    return prev;
+}
+
+extern ANDROID_ATOMIC_INLINE
+int32_t android_atomic_inc(volatile int32_t *addr)
+{
+    return android_atomic_add(1, addr);
+}
+
+extern ANDROID_ATOMIC_INLINE
+int32_t android_atomic_dec(volatile int32_t *addr)
+{
+    return android_atomic_add(-1, addr);
+}
+
+extern ANDROID_ATOMIC_INLINE
+int32_t android_atomic_and(int32_t value, volatile int32_t *ptr)
+{
+    int32_t prev, status;
+    android_memory_barrier();
+    do {
+        prev = *ptr;
+        status = android_atomic_cas(prev, prev & value, ptr);
+    } while (__builtin_expect(status != 0, 0));
+    return prev;
+}
+
+extern ANDROID_ATOMIC_INLINE
+int32_t android_atomic_or(int32_t value, volatile int32_t *ptr)
+{
+    int32_t prev, status;
+    android_memory_barrier();
+    do {
+        prev = *ptr;
+        status = android_atomic_cas(prev, prev | value, ptr);
+    } while (__builtin_expect(status != 0, 0));
+    return prev;
+}
+
+#endif /* ANDROID_CUTILS_ATOMIC_AARCH64_H */
diff --git a/include/cutils/atomic-inline.h b/include/cutils/atomic-inline.h
index 0b13138..ae79e00 100644
--- a/include/cutils/atomic-inline.h
+++ b/include/cutils/atomic-inline.h
@@ -43,7 +43,9 @@
 # error "Must define ANDROID_SMP before including atomic-inline.h"
 #endif
 
-#if defined(__arm__)
+#if defined(__aarch64__)
+#include <cutils/atomic-arm64.h>
+#elif defined(__arm__)
 #include <cutils/atomic-arm.h>
 #elif defined(__i386__) || defined(__x86_64__)
 #include <cutils/atomic-x86.h>
diff --git a/include/cutils/atomic.h b/include/cutils/atomic.h
index ae42eb8..1787e34 100644
--- a/include/cutils/atomic.h
+++ b/include/cutils/atomic.h
@@ -80,6 +80,11 @@
 int32_t android_atomic_acquire_load(volatile const int32_t* addr);
 int32_t android_atomic_release_load(volatile const int32_t* addr);
 
+#if defined (__LP64__)
+int64_t android_atomic_acquire_load64(volatile const int64_t* addr);
+int64_t android_atomic_release_load64(volatile const int64_t* addr);
+#endif
+
 /*
  * Perform an atomic store with "acquire" or "release" ordering.
  *
@@ -89,6 +94,11 @@
 void android_atomic_acquire_store(int32_t value, volatile int32_t* addr);
 void android_atomic_release_store(int32_t value, volatile int32_t* addr);
 
+#if defined (__LP64__)
+void android_atomic_acquire_store64(int64_t value, volatile int64_t* addr);
+void android_atomic_release_store64(int64_t value, volatile int64_t* addr);
+#endif
+
 /*
  * Compare-and-set operation with "acquire" or "release" ordering.
  *
@@ -106,6 +116,13 @@
 int android_atomic_release_cas(int32_t oldvalue, int32_t newvalue,
         volatile int32_t* addr);
 
+#if defined (__LP64__)
+int64_t android_atomic_acquire_cas64(int64_t old_value, int64_t new_value,
+        volatile int64_t *ptr);
+int64_t android_atomic_release_cas64(int64_t old_value, int64_t new_value,
+        volatile int64_t *ptr);
+#endif
+
 /*
  * Aliases for code using an older version of this header.  These are now
  * deprecated and should not be used.  The definitions will be removed
diff --git a/include/log/log.h b/include/log/log.h
index e3ecc69..7f952ff 100644
--- a/include/log/log.h
+++ b/include/log/log.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2005-2013 The Android Open Source Project
+ * Copyright (C) 2005-2014 The Android Open Source Project
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -563,4 +563,4 @@
 }
 #endif
 
-#endif // _LIBS_CUTILS_LOG_H
+#endif /* _LIBS_LOG_LOG_H */
diff --git a/include/log/log_read.h b/include/log/log_read.h
new file mode 100644
index 0000000..861c192
--- /dev/null
+++ b/include/log/log_read.h
@@ -0,0 +1,79 @@
+/*
+ * Copyright (C) 2013-2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef _LIBS_LOG_LOG_READ_H
+#define _LIBS_LOG_LOG_READ_H
+
+#include <time.h>
+
+#define NS_PER_SEC 1000000000ULL
+#ifdef __cplusplus
+struct log_time : public timespec {
+public:
+    log_time(timespec &T)
+    {
+        tv_sec = T.tv_sec;
+        tv_nsec = T.tv_nsec;
+    }
+    log_time(void)
+    {
+    }
+    log_time(clockid_t id)
+    {
+        clock_gettime(id, (timespec *) this);
+    }
+    log_time(const char *T)
+    {
+        const uint8_t *c = (const uint8_t *) T;
+        tv_sec = c[0] | (c[1] << 8) | (c[2] << 16) | (c[3] << 24);
+        tv_nsec = c[4] | (c[5] << 8) | (c[6] << 16) | (c[7] << 24);
+    }
+    bool operator== (const timespec &T) const
+    {
+        return (tv_sec == T.tv_sec) && (tv_nsec == T.tv_nsec);
+    }
+    bool operator!= (const timespec &T) const
+    {
+        return !(*this == T);
+    }
+    bool operator< (const timespec &T) const
+    {
+        return (tv_sec < T.tv_sec)
+            || ((tv_sec == T.tv_sec) && (tv_nsec < T.tv_nsec));
+    }
+    bool operator>= (const timespec &T) const
+    {
+        return !(*this < T);
+    }
+    bool operator> (const timespec &T) const
+    {
+        return (tv_sec > T.tv_sec)
+            || ((tv_sec == T.tv_sec) && (tv_nsec > T.tv_nsec));
+    }
+    bool operator<= (const timespec &T) const
+    {
+        return !(*this > T);
+    }
+    uint64_t nsec(void) const
+    {
+        return static_cast<uint64_t>(tv_sec) * NS_PER_SEC + tv_nsec;
+    }
+};
+#else
+typedef struct timespec log_time;
+#endif
+
+#endif /* define _LIBS_LOG_LOG_READ_H */
diff --git a/include/log/logger.h b/include/log/logger.h
index a05b174..966397a 100644
--- a/include/log/logger.h
+++ b/include/log/logger.h
@@ -1,14 +1,14 @@
 /*
 **
-** Copyright 2007, The Android Open Source Project
+** Copyright 2007-2014, The Android Open Source Project
 **
 ** This file is dual licensed.  It may be redistributed and/or modified
 ** under the terms of the Apache 2.0 License OR version 2 of the GNU
 ** General Public License.
 */
 
-#ifndef _UTILS_LOGGER_H
-#define _UTILS_LOGGER_H
+#ifndef _LIBS_LOG_LOGGER_H
+#define _LIBS_LOG_LOGGER_H
 
 #include <stdint.h>
 #include <log/log.h>
@@ -48,11 +48,6 @@
     char        msg[0];    /* the entry's payload */
 };
 
-#define LOGGER_LOG_MAIN		"log/main"
-#define LOGGER_LOG_RADIO	"log/radio"
-#define LOGGER_LOG_EVENTS	"log/events"
-#define LOGGER_LOG_SYSTEM	"log/system"
-
 /*
  * The maximum size of the log entry payload that can be
  * written to the kernel logger driver. An attempt to write
@@ -82,36 +77,36 @@
         } extra;
     } __attribute__((aligned(4)));
 #ifdef __cplusplus
-    /* Matching log_time_t operators */
-    bool operator== (log_msg &T)
+    /* Matching log_time operators */
+    bool operator== (const log_msg &T) const
     {
         return (entry.sec == T.entry.sec) && (entry.nsec == T.entry.nsec);
     }
-    bool operator!= (log_msg &T)
+    bool operator!= (const log_msg &T) const
     {
         return !(*this == T);
     }
-    bool operator< (log_msg &T)
+    bool operator< (const log_msg &T) const
     {
         return (entry.sec < T.entry.sec)
             || ((entry.sec == T.entry.sec)
              && (entry.nsec < T.entry.nsec));
     }
-    bool operator>= (log_msg &T)
+    bool operator>= (const log_msg &T) const
     {
         return !(*this < T);
     }
-    bool operator> (log_msg &T)
+    bool operator> (const log_msg &T) const
     {
         return (entry.sec > T.entry.sec)
             || ((entry.sec == T.entry.sec)
              && (entry.nsec > T.entry.nsec));
     }
-    bool operator<= (log_msg &T)
+    bool operator<= (const log_msg &T) const
     {
         return !(*this > T);
     }
-    uint64_t nsec(void)
+    uint64_t nsec(void) const
     {
         return static_cast<uint64_t>(entry.sec) * NS_PER_SEC + entry.nsec;
     }
@@ -168,23 +163,8 @@
 log_id_t android_name_to_log_id(const char *logName);
 const char *android_log_id_to_name(log_id_t log_id);
 
-#ifdef HAVE_IOCTL
-
-#include <sys/ioctl.h>
-
-#define __LOGGERIO	0xAE
-
-#define LOGGER_GET_LOG_BUF_SIZE		_IO(__LOGGERIO, 1) /* size of log */
-#define LOGGER_GET_LOG_LEN		_IO(__LOGGERIO, 2) /* used log len */
-#define LOGGER_GET_NEXT_ENTRY_LEN	_IO(__LOGGERIO, 3) /* next entry len */
-#define LOGGER_FLUSH_LOG		_IO(__LOGGERIO, 4) /* flush log */
-#define LOGGER_GET_VERSION		_IO(__LOGGERIO, 5) /* abi version */
-#define LOGGER_SET_VERSION		_IO(__LOGGERIO, 6) /* abi version */
-
-#endif // HAVE_IOCTL
-
 #ifdef __cplusplus
 }
 #endif
 
-#endif /* _UTILS_LOGGER_H */
+#endif /* _LIBS_LOG_LOGGER_H */
diff --git a/include/log/uio.h b/include/log/uio.h
index 01a74d2..a71f515 100644
--- a/include/log/uio.h
+++ b/include/log/uio.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2007 The Android Open Source Project
+ * Copyright (C) 2007-2014 The Android Open Source Project
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -31,8 +31,8 @@
 #include <stddef.h>
 
 struct iovec {
-    const void*  iov_base;
-    size_t       iov_len;
+    void*  iov_base;
+    size_t iov_len;
 };
 
 extern int  readv( int  fd, struct iovec*  vecs, int  count );
diff --git a/include/private/android_filesystem_config.h b/include/private/android_filesystem_config.h
index 53619ac..e3568ae 100644
--- a/include/private/android_filesystem_config.h
+++ b/include/private/android_filesystem_config.h
@@ -247,6 +247,7 @@
     /* the following files have enhanced capabilities and ARE included in user builds. */
     { 00750, AID_ROOT,      AID_SHELL,     (1 << CAP_SETUID) | (1 << CAP_SETGID), "system/bin/run-as" },
 
+    { 00750, AID_ROOT,      AID_ROOT,      0, "system/bin/uncrypt" },
     { 00755, AID_ROOT,      AID_SHELL,     0, "system/bin/*" },
     { 00755, AID_ROOT,      AID_ROOT,      0, "system/lib/valgrind/*" },
     { 00755, AID_ROOT,      AID_SHELL,     0, "system/xbin/*" },
diff --git a/include/system/audio.h b/include/system/audio.h
index aa7ac02..2424baf 100644
--- a/include/system/audio.h
+++ b/include/system/audio.h
@@ -34,11 +34,17 @@
 /* device address used to refer to the standard remote submix */
 #define AUDIO_REMOTE_SUBMIX_DEVICE_ADDRESS "0"
 
+/* AudioFlinger and AudioPolicy services use I/O handles to identify audio sources and sinks */
 typedef int audio_io_handle_t;
+#define AUDIO_IO_HANDLE_NONE    0
 
 /* Audio stream types */
 typedef enum {
+    /* These values must kept in sync with
+     * frameworks/base/media/java/android/media/AudioSystem.java
+     */
     AUDIO_STREAM_DEFAULT          = -1,
+    AUDIO_STREAM_MIN              = 0,
     AUDIO_STREAM_VOICE_CALL       = 0,
     AUDIO_STREAM_SYSTEM           = 1,
     AUDIO_STREAM_RING             = 2,
@@ -55,7 +61,9 @@
 } audio_stream_type_t;
 
 /* Do not change these values without updating their counterparts
- * in media/java/android/media/MediaRecorder.java!
+ * in frameworks/base/media/java/android/media/MediaRecorder.java,
+ * frameworks/av/services/audioflinger/AudioPolicyService.cpp,
+ * and system/media/audio_effects/include/audio_effects/audio_effects_conf.h!
  */
 typedef enum {
     AUDIO_SOURCE_DEFAULT             = 0,
@@ -93,6 +101,13 @@
      * (value must be 0)
      */
     AUDIO_SESSION_OUTPUT_MIX = 0,
+
+    /* application does not specify an explicit session ID to be used,
+     * and requests a new session ID to be allocated
+     * TODO use unique values for AUDIO_SESSION_OUTPUT_MIX and AUDIO_SESSION_ALLOCATE,
+     * after all uses have been updated from 0 to the appropriate symbol, and have been tested.
+     */
+    AUDIO_SESSION_ALLOCATE = 0,
 } audio_session_t;
 
 /* Audio sub formats (see enum audio_format). */
@@ -103,8 +118,11 @@
     AUDIO_FORMAT_PCM_SUB_8_BIT           = 0x2, /* DO NOT CHANGE - PCM unsigned 8 bits */
     AUDIO_FORMAT_PCM_SUB_32_BIT          = 0x3, /* PCM signed .31 fixed point */
     AUDIO_FORMAT_PCM_SUB_8_24_BIT        = 0x4, /* PCM signed 7.24 fixed point */
+    AUDIO_FORMAT_PCM_SUB_FLOAT           = 0x5, /* PCM single-precision floating point */
 } audio_format_pcm_sub_fmt_t;
 
+/* The audio_format_*_sub_fmt_t declarations are not currently used */
+
 /* MP3 sub format field definition : can use 11 LSBs in the same way as MP3
  * frame header to specify bit rate, stereo mode, version...
  */
@@ -129,7 +147,7 @@
     AUDIO_FORMAT_VORBIS_SUB_NONE         = 0x0,
 } audio_format_vorbis_sub_fmt_t;
 
-/* Audio format consists in a main format field (upper 8 bits) and a sub format
+/* Audio format consists of a main format field (upper 8 bits) and a sub format
  * field (lower 24 bits).
  *
  * The main format indicates the main codec type. The sub format field
@@ -153,14 +171,18 @@
     AUDIO_FORMAT_SUB_MASK            = 0x00FFFFFFUL,
 
     /* Aliases */
+    /* note != AudioFormat.ENCODING_PCM_16BIT */
     AUDIO_FORMAT_PCM_16_BIT          = (AUDIO_FORMAT_PCM |
                                         AUDIO_FORMAT_PCM_SUB_16_BIT),
+    /* note != AudioFormat.ENCODING_PCM_8BIT */
     AUDIO_FORMAT_PCM_8_BIT           = (AUDIO_FORMAT_PCM |
                                         AUDIO_FORMAT_PCM_SUB_8_BIT),
     AUDIO_FORMAT_PCM_32_BIT          = (AUDIO_FORMAT_PCM |
                                         AUDIO_FORMAT_PCM_SUB_32_BIT),
     AUDIO_FORMAT_PCM_8_24_BIT        = (AUDIO_FORMAT_PCM |
                                         AUDIO_FORMAT_PCM_SUB_8_24_BIT),
+    AUDIO_FORMAT_PCM_FLOAT           = (AUDIO_FORMAT_PCM |
+                                        AUDIO_FORMAT_PCM_SUB_FLOAT),
 } audio_format_t;
 
 enum {
@@ -266,6 +288,15 @@
 
 typedef uint32_t audio_channel_mask_t;
 
+/* Expresses the convention when stereo audio samples are stored interleaved
+ * in an array.  This should improve readability by allowing code to use
+ * symbolic indices instead of hard-coded [0] and [1].
+ */
+enum {
+    AUDIO_INTERLEAVE_LEFT   = 0,
+    AUDIO_INTERLEAVE_RIGHT  = 1,
+};
+
 typedef enum {
     AUDIO_MODE_INVALID          = -2,
     AUDIO_MODE_CURRENT          = -1,
@@ -278,7 +309,9 @@
     AUDIO_MODE_MAX              = AUDIO_MODE_CNT - 1,
 } audio_mode_t;
 
+/* This enum is deprecated */
 typedef enum {
+    AUDIO_IN_ACOUSTICS_NONE          = 0,
     AUDIO_IN_ACOUSTICS_AGC_ENABLE    = 0x0001,
     AUDIO_IN_ACOUSTICS_AGC_DISABLE   = 0,
     AUDIO_IN_ACOUSTICS_NS_ENABLE     = 0x0002,
@@ -304,9 +337,12 @@
     AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES = 0x100,
     AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_SPEAKER    = 0x200,
     AUDIO_DEVICE_OUT_AUX_DIGITAL               = 0x400,
+    /* uses an analog connection (multiplexed over the USB connector pins for instance) */
     AUDIO_DEVICE_OUT_ANLG_DOCK_HEADSET         = 0x800,
     AUDIO_DEVICE_OUT_DGTL_DOCK_HEADSET         = 0x1000,
+    /* USB accessory mode: your Android device is a USB device and the dock is a USB host */
     AUDIO_DEVICE_OUT_USB_ACCESSORY             = 0x2000,
+    /* USB host mode: your Android device is a USB host and the dock is a USB device */
     AUDIO_DEVICE_OUT_USB_DEVICE                = 0x4000,
     AUDIO_DEVICE_OUT_REMOTE_SUBMIX             = 0x8000,
     AUDIO_DEVICE_OUT_DEFAULT                   = AUDIO_DEVICE_BIT_DEFAULT,
@@ -522,7 +558,7 @@
  */
 static inline audio_channel_mask_t audio_channel_out_mask_from_count(uint32_t channel_count)
 {
-    switch(channel_count) {
+    switch (channel_count) {
     case 1:
         return AUDIO_CHANNEL_OUT_MONO;
     case 2:
@@ -562,7 +598,7 @@
     switch (format & AUDIO_FORMAT_MAIN_MASK) {
     case AUDIO_FORMAT_PCM:
         if (format != AUDIO_FORMAT_PCM_16_BIT &&
-                format != AUDIO_FORMAT_PCM_8_BIT) {
+                format != AUDIO_FORMAT_PCM_8_BIT && format != AUDIO_FORMAT_PCM_FLOAT) {
             return false;
         }
     case AUDIO_FORMAT_MP3:
@@ -598,6 +634,9 @@
     case AUDIO_FORMAT_PCM_8_BIT:
         size = sizeof(uint8_t);
         break;
+    case AUDIO_FORMAT_PCM_FLOAT:
+        size = sizeof(float);
+        break;
     default:
         break;
     }
diff --git a/include/sysutils/SocketClient.h b/include/sysutils/SocketClient.h
index 85b58ef..1004f06 100644
--- a/include/sysutils/SocketClient.h
+++ b/include/sysutils/SocketClient.h
@@ -6,22 +6,23 @@
 #include <pthread.h>
 #include <cutils/atomic.h>
 #include <sys/types.h>
+#include <sys/uio.h>
 
 class SocketClient {
     int             mSocket;
     bool            mSocketOwned;
     pthread_mutex_t mWriteMutex;
 
-    /* Peer process ID */
+    // Peer process ID
     pid_t mPid;
 
-    /* Peer user ID */
+    // Peer user ID
     uid_t mUid;
 
-    /* Peer group ID */
+    // Peer group ID
     gid_t mGid;
 
-    /* Reference count (starts at 1) */
+    // Reference count (starts at 1)
     pthread_mutex_t mRefCountMutex;
     int mRefCount;
 
@@ -38,12 +39,15 @@
     pid_t getPid() const { return mPid; }
     uid_t getUid() const { return mUid; }
     gid_t getGid() const { return mGid; }
-    void setCmdNum(int cmdNum) { android_atomic_release_store(cmdNum, &mCmdNum); }
+    void setCmdNum(int cmdNum) {
+        android_atomic_release_store(cmdNum, &mCmdNum);
+    }
     int getCmdNum() { return mCmdNum; }
 
     // Send null-terminated C strings:
     int sendMsg(int code, const char *msg, bool addErrno);
     int sendMsg(int code, const char *msg, bool addErrno, bool useCmdNum);
+    int sendMsg(const char *msg);
 
     // Provides a mechanism to send a response code to the client.
     // Sends the code and a null character.
@@ -56,6 +60,8 @@
 
     // Sending binary data:
     int sendData(const void *data, int len);
+    // iovec contents not preserved through call
+    int sendDatav(struct iovec *iov, int iovcnt);
 
     // Optional reference counting.  Reference count starts at 1.  If
     // it's decremented to 0, it deletes itself.
@@ -64,19 +70,18 @@
     void incRef();
     bool decRef(); // returns true at 0 (but note: SocketClient already deleted)
 
-    // return a new string in quotes with '\\' and '\"' escaped for "my arg" transmissions
+    // return a new string in quotes with '\\' and '\"' escaped for "my arg"
+    // transmissions
     static char *quoteArg(const char *arg);
 
 private:
-    // Send null-terminated C strings
-    int sendMsg(const char *msg);
     void init(int socket, bool owned, bool useCmdNum);
 
-    // Sending binary data. The caller should use make sure this is protected
+    // Sending binary data. The caller should make sure this is protected
     // from multiple threads entering simultaneously.
-    // returns 0 if successful, -1 if there is a 0 byte write and -2 if any other
-    // error occurred (use errno to get the error)
-    int sendDataLocked(const void *data, int len);
+    // returns 0 if successful, -1 if there is a 0 byte write or if any
+    // other error occurred (use errno to get the error)
+    int sendDataLockedv(struct iovec *iov, int iovcnt);
 };
 
 typedef android::sysutils::List<SocketClient *> SocketClientCollection;
diff --git a/include/sysutils/SocketClientCommand.h b/include/sysutils/SocketClientCommand.h
new file mode 100644
index 0000000..746bc25
--- /dev/null
+++ b/include/sysutils/SocketClientCommand.h
@@ -0,0 +1,27 @@
+/*
+ * Copyright (C) 2012 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#ifndef _SOCKETCLIENTCOMMAND_H
+#define _SOCKETCLIENTCOMMAND_H
+
+#include <sysutils/SocketClient.h>
+
+class SocketClientCommand {
+public:
+    virtual ~SocketClientCommand() { }
+    virtual void runSocketCommand(SocketClient *client) = 0;
+};
+
+#endif
diff --git a/include/sysutils/SocketListener.h b/include/sysutils/SocketListener.h
index 8f56230..c204a0f 100644
--- a/include/sysutils/SocketListener.h
+++ b/include/sysutils/SocketListener.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2008 The Android Open Source Project
+ * Copyright (C) 2008-2014 The Android Open Source Project
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -19,6 +19,7 @@
 #include <pthread.h>
 
 #include <sysutils/SocketClient.h>
+#include "SocketClientCommand.h"
 
 class SocketListener {
     bool                    mListen;
@@ -41,10 +42,15 @@
 
     void sendBroadcast(int code, const char *msg, bool addErrno);
 
+    void runOnEachSocket(SocketClientCommand *command);
+
+    bool release(SocketClient *c) { return release(c, true); }
+
 protected:
     virtual bool onDataAvailable(SocketClient *c) = 0;
 
 private:
+    bool release(SocketClient *c, bool wakeup);
     static void *threadStart(void *obj);
     void runListener();
     void init(const char *socketName, int socketFd, bool listen, bool useCmdNum);
diff --git a/include/utils/CallStack.h b/include/utils/CallStack.h
index bfe2ddb..27e89f4 100644
--- a/include/utils/CallStack.h
+++ b/include/utils/CallStack.h
@@ -18,7 +18,7 @@
 #define ANDROID_CALLSTACK_H
 
 #include <android/log.h>
-#include <backtrace/backtrace.h>
+#include <backtrace/backtrace_constants.h>
 #include <utils/String8.h>
 #include <utils/Vector.h>
 
diff --git a/init/init.c b/init/init.c
index ab52749..00f4558 100644
--- a/init/init.c
+++ b/init/init.c
@@ -623,7 +623,7 @@
         total_bytes_written += chunk_size;
     }
 
-    INFO("Mixed %d bytes from /dev/hw_random into /dev/urandom",
+    INFO("Mixed %zu bytes from /dev/hw_random into /dev/urandom",
                 total_bytes_written);
     result = 0;
 
@@ -842,7 +842,6 @@
 #endif
 
 static const struct selinux_opt seopts_prop[] = {
-        { SELABEL_OPT_PATH, "/data/security/property_contexts" },
         { SELABEL_OPT_PATH, "/property_contexts" },
         { 0, NULL }
 };
@@ -868,6 +867,7 @@
 void selinux_init_all_handles(void)
 {
     sehandle = selinux_android_file_context_handle();
+    selinux_android_set_sehandle(sehandle);
     sehandle_prop = selinux_android_prop_context_handle();
 }
 
diff --git a/init/property_service.c b/init/property_service.c
index 1b9327c..6cb2c7b 100644
--- a/init/property_service.c
+++ b/init/property_service.c
@@ -110,6 +110,7 @@
 } control_perms[] = {
     { "dumpstate",AID_SHELL, AID_LOG },
     { "ril-daemon",AID_RADIO, AID_RADIO },
+    { "pre-recovery", AID_SYSTEM, AID_SYSTEM },
      {NULL, 0, 0 }
 };
 
@@ -168,7 +169,7 @@
     if (selabel_lookup(sehandle_prop, &tctx, name, 1) != 0)
         goto err;
 
-    if (selinux_check_access(sctx, tctx, class, perm, name) == 0)
+    if (selinux_check_access(sctx, tctx, class, perm, (void*) name) == 0)
         result = 1;
 
     freecon(tctx);
@@ -380,7 +381,7 @@
 
     r = TEMP_FAILURE_RETRY(recv(s, &msg, sizeof(msg), 0));
     if(r != sizeof(prop_msg)) {
-        ERROR("sys_prop: mis-match msg size received: %d expected: %d errno: %d\n",
+        ERROR("sys_prop: mis-match msg size received: %d expected: %zu errno: %d\n",
               r, sizeof(prop_msg), errno);
         close(s);
         return;
@@ -520,7 +521,7 @@
                     || (sb.st_uid != 0)
                     || (sb.st_gid != 0)
                     || (sb.st_nlink != 1)) {
-                ERROR("skipping insecure property file %s (uid=%lu gid=%lu nlink=%d mode=%o)\n",
+                ERROR("skipping insecure property file %s (uid=%u gid=%u nlink=%d mode=%o)\n",
                       entry->d_name, sb.st_uid, sb.st_gid, sb.st_nlink, sb.st_mode);
                 close(fd);
                 continue;
diff --git a/init/util.c b/init/util.c
index 9aaa77d..e772342 100644
--- a/init/util.c
+++ b/init/util.c
@@ -25,6 +25,7 @@
 #include <ftw.h>
 
 #include <selinux/label.h>
+#include <selinux/android.h>
 
 #include <sys/stat.h>
 #include <sys/types.h>
@@ -524,37 +525,12 @@
     return rc;
 }
 
-int restorecon(const char *pathname)
+int restorecon(const char* pathname)
 {
-    char *secontext = NULL;
-    struct stat sb;
-    int i;
-
-    if (is_selinux_enabled() <= 0 || !sehandle)
-        return 0;
-
-    if (lstat(pathname, &sb) < 0)
-        return -errno;
-    if (selabel_lookup(sehandle, &secontext, pathname, sb.st_mode) < 0)
-        return -errno;
-    if (lsetfilecon(pathname, secontext) < 0) {
-        freecon(secontext);
-        return -errno;
-    }
-    freecon(secontext);
-    return 0;
-}
-
-static int nftw_restorecon(const char* filename, const struct stat* statptr,
-    int fileflags, struct FTW* pftw)
-{
-    restorecon(filename);
-    return 0;
+    return selinux_android_restorecon(pathname);
 }
 
 int restorecon_recursive(const char* pathname)
 {
-    int fd_limit = 20;
-    int flags = FTW_DEPTH | FTW_MOUNT | FTW_PHYS;
-    return nftw(pathname, nftw_restorecon, fd_limit, flags);
+    return selinux_android_restorecon_recursive(pathname);
 }
diff --git a/libbacktrace/Android.mk b/libbacktrace/Android.mk
index a6b9c2b..0ae8839 100644
--- a/libbacktrace/Android.mk
+++ b/libbacktrace/Android.mk
@@ -1,9 +1,9 @@
 LOCAL_PATH:= $(call my-dir)
 
 common_src := \
-	Backtrace.cpp \
+	BacktraceImpl.cpp \
+	BacktraceMap.cpp \
 	BacktraceThread.cpp \
-	map_info.c \
 	thread_utils.c \
 
 common_cflags := \
@@ -23,8 +23,7 @@
 	liblog \
 
 # To enable using libunwind on each arch, add it to this list.
-libunwind_architectures :=
-#libunwind_architectures := arm
+libunwind_architectures := arm arm64
 
 ifeq ($(TARGET_ARCH),$(filter $(TARGET_ARCH),$(libunwind_architectures)))
 
@@ -36,6 +35,7 @@
 LOCAL_SRC_FILES:= \
 	$(common_src) \
 	UnwindCurrent.cpp \
+	UnwindMap.cpp \
 	UnwindPtrace.cpp \
 
 LOCAL_CFLAGS := \
@@ -148,6 +148,11 @@
 	-DGTEST_OS_LINUX_ANDROID \
 	-DGTEST_HAS_STD_STRING \
 
+ifeq ($(TARGET_ARCH),arm64)
+  $(info TODO: $(LOCAL_PATH)/Android.mk -fstack-protector not yet available for the AArch64 toolchain)
+  LOCAL_CFLAGS += -fno-stack-protector
+endif # arm64
+
 LOCAL_CONLYFLAGS += \
 	$(common_conlyflags) \
 
@@ -168,18 +173,15 @@
 include $(BUILD_NATIVE_TEST)
 
 #----------------------------------------------------------------------------
-# Only linux-x86 host versions of libbacktrace supported.
+# Only x86 host versions of libbacktrace supported.
 #----------------------------------------------------------------------------
-ifeq ($(HOST_OS)-$(HOST_ARCH),linux-x86)
+ifeq ($(HOST_ARCH),x86)
 
 #----------------------------------------------------------------------------
 # The host libbacktrace library using libcorkscrew
 #----------------------------------------------------------------------------
 include $(CLEAR_VARS)
 
-LOCAL_SRC_FILES += \
-	$(common_src) \
-	Corkscrew.cpp \
 
 LOCAL_CFLAGS += \
 	$(common_cflags) \
@@ -187,21 +189,12 @@
 LOCAL_CONLYFLAGS += \
 	$(common_conlyflags) \
 
-LOCAL_CPPFLAGS += \
-	$(common_cppflags) \
-
 LOCAL_C_INCLUDES := \
 	$(common_c_includes) \
-	system/core/libcorkscrew \
 
 LOCAL_SHARED_LIBRARIES := \
 	libgccdemangle \
 	liblog \
-	libcorkscrew \
-
-LOCAL_LDLIBS += \
-	-ldl \
-	-lrt \
 
 LOCAL_MODULE := libbacktrace
 LOCAL_MODULE_TAGS := optional
@@ -209,9 +202,38 @@
 LOCAL_ADDITIONAL_DEPENDENCIES := \
 	$(LOCAL_PATH)/Android.mk
 
+ifeq ($(HOST_OS),linux)
+LOCAL_SRC_FILES += \
+	$(common_src) \
+	Corkscrew.cpp \
+
+LOCAL_C_INCLUDES += \
+	system/core/libcorkscrew \
+
+LOCAL_SHARED_LIBRARIES := \
+	libcorkscrew \
+
+LOCAL_CPPFLAGS += \
+	$(common_cppflags) \
+
+LOCAL_LDLIBS += \
+	-ldl \
+	-lrt \
+
+else
+LOCAL_SRC_FILES += \
+	BacktraceMap.cpp \
+
+endif
+
 include $(BUILD_HOST_SHARED_LIBRARY)
 
 #----------------------------------------------------------------------------
+# The host test is only supported on linux.
+#----------------------------------------------------------------------------
+ifeq ($(HOST_OS),linux)
+
+#----------------------------------------------------------------------------
 # libbacktrace host test library, all optimizations turned off
 #----------------------------------------------------------------------------
 include $(CLEAR_VARS)
@@ -263,4 +285,6 @@
 
 include $(BUILD_HOST_NATIVE_TEST)
 
-endif # HOST_OS-HOST_ARCH == linux-x86
+endif # HOST_OS == linux
+
+endif # HOST_ARCH == x86
diff --git a/libbacktrace/Backtrace.cpp b/libbacktrace/Backtrace.cpp
deleted file mode 100644
index a7568e0..0000000
--- a/libbacktrace/Backtrace.cpp
+++ /dev/null
@@ -1,319 +0,0 @@
-/*
- * Copyright (C) 2013 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <errno.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/ptrace.h>
-#include <sys/types.h>
-#include <unistd.h>
-
-#define __STDC_FORMAT_MACROS
-#include <inttypes.h>
-
-#include <string>
-
-#include <backtrace/Backtrace.h>
-#include <cutils/log.h>
-
-#include "Backtrace.h"
-#include "thread_utils.h"
-
-//-------------------------------------------------------------------------
-// BacktraceImpl functions.
-//-------------------------------------------------------------------------
-backtrace_t* BacktraceImpl::GetBacktraceData() {
-  return &backtrace_obj_->backtrace_;
-}
-
-//-------------------------------------------------------------------------
-// Backtrace functions.
-//-------------------------------------------------------------------------
-Backtrace::Backtrace(BacktraceImpl* impl, pid_t pid, backtrace_map_info_t* map_info)
-    : impl_(impl), map_info_(map_info), map_info_requires_delete_(false) {
-  impl_->SetParent(this);
-  backtrace_.num_frames = 0;
-  backtrace_.pid = pid;
-  backtrace_.tid = -1;
-
-  if (map_info_ == NULL) {
-    // Create the map and manage it internally.
-    map_info_ = backtrace_create_map_info_list(pid);
-    map_info_requires_delete_ = true;
-  }
-}
-
-Backtrace::~Backtrace() {
-  for (size_t i = 0; i < NumFrames(); i++) {
-    if (backtrace_.frames[i].func_name) {
-      free(backtrace_.frames[i].func_name);
-      backtrace_.frames[i].func_name = NULL;
-    }
-  }
-
-  if (map_info_ && map_info_requires_delete_) {
-    backtrace_destroy_map_info_list(map_info_);
-    map_info_ = NULL;
-  }
-
-  if (impl_) {
-    delete impl_;
-    impl_ = NULL;
-  }
-}
-
-bool Backtrace::Unwind(size_t num_ignore_frames) {
-  return impl_->Unwind(num_ignore_frames);
-}
-
-extern "C" char* __cxa_demangle(const char* mangled, char* buf, size_t* len,
-                                int* status);
-
-std::string Backtrace::GetFunctionName(uintptr_t pc, uintptr_t* offset) {
-  std::string func_name = impl_->GetFunctionNameRaw(pc, offset);
-  if (!func_name.empty()) {
-#if defined(__APPLE__)
-    // Mac OS' __cxa_demangle demangles "f" as "float"; last tested on 10.7.
-    if (symbol_name[0] != '_') {
-      return func_name;
-    }
-#endif
-    char* name = __cxa_demangle(func_name.c_str(), 0, 0, 0);
-    if (name) {
-      func_name = name;
-      free(name);
-    }
-  }
-  return func_name;
-}
-
-bool Backtrace::VerifyReadWordArgs(uintptr_t ptr, uint32_t* out_value) {
-  if (ptr & 3) {
-    BACK_LOGW("invalid pointer %p", (void*)ptr);
-    *out_value = (uint32_t)-1;
-    return false;
-  }
-  return true;
-}
-
-const char* Backtrace::GetMapName(uintptr_t pc, uintptr_t* map_start) {
-  const backtrace_map_info_t* map_info = FindMapInfo(pc);
-  if (map_info) {
-    if (map_start) {
-      *map_start = map_info->start;
-    }
-    return map_info->name;
-  }
-  return NULL;
-}
-
-const backtrace_map_info_t* Backtrace::FindMapInfo(uintptr_t ptr) {
-  return backtrace_find_map_info(map_info_, ptr);
-}
-
-std::string Backtrace::FormatFrameData(size_t frame_num) {
-  backtrace_frame_data_t* frame = &backtrace_.frames[frame_num];
-  const char* map_name;
-  if (frame->map_name) {
-    map_name = frame->map_name;
-  } else {
-    map_name = "<unknown>";
-  }
-  uintptr_t relative_pc;
-  if (frame->map_offset) {
-    relative_pc = frame->map_offset;
-  } else {
-    relative_pc = frame->pc;
-  }
-
-  char buf[512];
-  if (frame->func_name && frame->func_offset) {
-    snprintf(buf, sizeof(buf), "#%02zu pc %0*" PRIxPTR "  %s (%s+%" PRIuPTR ")",
-             frame_num, (int)sizeof(uintptr_t)*2, relative_pc, map_name,
-             frame->func_name, frame->func_offset);
-  } else if (frame->func_name) {
-    snprintf(buf, sizeof(buf), "#%02zu pc %0*" PRIxPTR "  %s (%s)", frame_num,
-             (int)sizeof(uintptr_t)*2, relative_pc, map_name, frame->func_name);
-  } else {
-    snprintf(buf, sizeof(buf), "#%02zu pc %0*" PRIxPTR "  %s", frame_num,
-             (int)sizeof(uintptr_t)*2, relative_pc, map_name);
-  }
-
-  return buf;
-}
-
-//-------------------------------------------------------------------------
-// BacktraceCurrent functions.
-//-------------------------------------------------------------------------
-BacktraceCurrent::BacktraceCurrent(
-    BacktraceImpl* impl, backtrace_map_info_t *map_info) : Backtrace(impl, getpid(), map_info) {
-
-  backtrace_.pid = getpid();
-}
-
-BacktraceCurrent::~BacktraceCurrent() {
-}
-
-bool BacktraceCurrent::ReadWord(uintptr_t ptr, uint32_t* out_value) {
-  if (!VerifyReadWordArgs(ptr, out_value)) {
-    return false;
-  }
-
-  const backtrace_map_info_t* map_info = FindMapInfo(ptr);
-  if (map_info && map_info->is_readable) {
-    *out_value = *reinterpret_cast<uint32_t*>(ptr);
-    return true;
-  } else {
-    BACK_LOGW("pointer %p not in a readable map", reinterpret_cast<void*>(ptr));
-    *out_value = static_cast<uint32_t>(-1);
-    return false;
-  }
-}
-
-//-------------------------------------------------------------------------
-// BacktracePtrace functions.
-//-------------------------------------------------------------------------
-BacktracePtrace::BacktracePtrace(
-    BacktraceImpl* impl, pid_t pid, pid_t tid, backtrace_map_info_t* map_info)
-    : Backtrace(impl, pid, map_info) {
-  backtrace_.tid = tid;
-}
-
-BacktracePtrace::~BacktracePtrace() {
-}
-
-bool BacktracePtrace::ReadWord(uintptr_t ptr, uint32_t* out_value) {
-  if (!VerifyReadWordArgs(ptr, out_value)) {
-    return false;
-  }
-
-#if defined(__APPLE__)
-  BACK_LOGW("MacOS does not support reading from another pid.");
-  return false;
-#else
-  // ptrace() returns -1 and sets errno when the operation fails.
-  // To disambiguate -1 from a valid result, we clear errno beforehand.
-  errno = 0;
-  *out_value = ptrace(PTRACE_PEEKTEXT, Tid(), reinterpret_cast<void*>(ptr), NULL);
-  if (*out_value == static_cast<uint32_t>(-1) && errno) {
-    BACK_LOGW("invalid pointer %p reading from tid %d, ptrace() strerror(errno)=%s",
-              reinterpret_cast<void*>(ptr), Tid(), strerror(errno));
-    return false;
-  }
-  return true;
-#endif
-}
-
-Backtrace* Backtrace::Create(pid_t pid, pid_t tid, backtrace_map_info_t* map_info) {
-  if (pid == BACKTRACE_CURRENT_PROCESS || pid == getpid()) {
-    if (tid == BACKTRACE_CURRENT_THREAD || tid == gettid()) {
-      return CreateCurrentObj(map_info);
-    } else {
-      return CreateThreadObj(tid, map_info);
-    }
-  } else if (tid == BACKTRACE_CURRENT_THREAD) {
-    return CreatePtraceObj(pid, pid, map_info);
-  } else {
-    return CreatePtraceObj(pid, tid, map_info);
-  }
-}
-
-//-------------------------------------------------------------------------
-// Common interface functions.
-//-------------------------------------------------------------------------
-bool backtrace_create_context_with_map(
-    backtrace_context_t* context, pid_t pid, pid_t tid, size_t num_ignore_frames,
-    backtrace_map_info_t* map_info) {
-  Backtrace* backtrace = Backtrace::Create(pid, tid, map_info);
-  if (!backtrace) {
-    return false;
-  }
-  if (!backtrace->Unwind(num_ignore_frames)) {
-    delete backtrace;
-    return false;
-  }
-
-  context->data = backtrace;
-  context->backtrace = backtrace->GetBacktrace();
-  return true;
-}
-
-bool backtrace_create_context(
-    backtrace_context_t* context, pid_t pid, pid_t tid, size_t num_ignore_frames) {
-  return backtrace_create_context_with_map(context, pid, tid, num_ignore_frames, NULL);
-}
-
-
-void backtrace_destroy_context(backtrace_context_t* context) {
-  if (context->data) {
-    Backtrace* backtrace = reinterpret_cast<Backtrace*>(context->data);
-    delete backtrace;
-    context->data = NULL;
-  }
-  context->backtrace = NULL;
-}
-
-const backtrace_t* backtrace_get_data(backtrace_context_t* context) {
-  if (context && context->data) {
-    Backtrace* backtrace = reinterpret_cast<Backtrace*>(context->data);
-    return backtrace->GetBacktrace();
-  }
-  return NULL;
-}
-
-bool backtrace_read_word(const backtrace_context_t* context, uintptr_t ptr, uint32_t* value) {
-  if (context->data) {
-    Backtrace* backtrace = reinterpret_cast<Backtrace*>(context->data);
-    return backtrace->ReadWord(ptr, value);
-  }
-  return true;
-}
-
-const char* backtrace_get_map_name(const backtrace_context_t* context, uintptr_t pc, uintptr_t* map_start) {
-  if (context->data) {
-    Backtrace* backtrace = reinterpret_cast<Backtrace*>(context->data);
-    return backtrace->GetMapName(pc, map_start);
-  }
-  return NULL;
-}
-
-char* backtrace_get_func_name(const backtrace_context_t* context, uintptr_t pc, uintptr_t* func_offset) {
-  if (context->data) {
-    Backtrace* backtrace = reinterpret_cast<Backtrace*>(context->data);
-    std::string func_name = backtrace->GetFunctionName(pc, func_offset);
-    if (!func_name.empty()) {
-      return strdup(func_name.c_str());
-    }
-  }
-  return NULL;
-}
-
-void backtrace_format_frame_data(
-    const backtrace_context_t* context, size_t frame_num, char* buf,
-    size_t buf_size) {
-  if (buf_size == 0 || buf == NULL) {
-    BACK_LOGW("bad call buf %p buf_size %zu", buf, buf_size);
-  } else if (context->data) {
-    Backtrace* backtrace = reinterpret_cast<Backtrace*>(context->data);
-    std::string line = backtrace->FormatFrameData(frame_num);
-    if (line.size() > buf_size) {
-      memcpy(buf, line.c_str(), buf_size-1);
-      buf[buf_size] = '\0';
-    } else {
-      memcpy(buf, line.c_str(), line.size()+1);
-    }
-  }
-}
diff --git a/libbacktrace/BacktraceImpl.cpp b/libbacktrace/BacktraceImpl.cpp
new file mode 100644
index 0000000..39296b4
--- /dev/null
+++ b/libbacktrace/BacktraceImpl.cpp
@@ -0,0 +1,208 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <errno.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/ptrace.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#define __STDC_FORMAT_MACROS
+#include <inttypes.h>
+
+#include <string>
+
+#include <backtrace/Backtrace.h>
+#include <backtrace/BacktraceMap.h>
+
+#include "BacktraceImpl.h"
+#include "thread_utils.h"
+
+//-------------------------------------------------------------------------
+// Backtrace functions.
+//-------------------------------------------------------------------------
+Backtrace::Backtrace(BacktraceImpl* impl, pid_t pid, BacktraceMap* map)
+    : pid_(pid), tid_(-1), map_(map), map_shared_(true), impl_(impl) {
+  impl_->SetParent(this);
+
+  if (map_ == NULL) {
+    map_ = BacktraceMap::Create(pid);
+    map_shared_ = false;
+  }
+}
+
+Backtrace::~Backtrace() {
+  if (impl_) {
+    delete impl_;
+    impl_ = NULL;
+  }
+
+  if (map_ && !map_shared_) {
+    delete map_;
+    map_ = NULL;
+  }
+}
+
+bool Backtrace::Unwind(size_t num_ignore_frames) {
+  return impl_->Unwind(num_ignore_frames);
+}
+
+extern "C" char* __cxa_demangle(const char* mangled, char* buf, size_t* len,
+                                int* status);
+
+std::string Backtrace::GetFunctionName(uintptr_t pc, uintptr_t* offset) {
+  std::string func_name = impl_->GetFunctionNameRaw(pc, offset);
+  if (!func_name.empty()) {
+#if defined(__APPLE__)
+    // Mac OS' __cxa_demangle demangles "f" as "float"; last tested on 10.7.
+    if (func_name[0] != '_') {
+      return func_name;
+    }
+#endif
+    char* name = __cxa_demangle(func_name.c_str(), 0, 0, 0);
+    if (name) {
+      func_name = name;
+      free(name);
+    }
+  }
+  return func_name;
+}
+
+bool Backtrace::VerifyReadWordArgs(uintptr_t ptr, uint32_t* out_value) {
+  if (ptr & 3) {
+    BACK_LOGW("invalid pointer %p", (void*)ptr);
+    *out_value = (uint32_t)-1;
+    return false;
+  }
+  return true;
+}
+
+std::string Backtrace::FormatFrameData(size_t frame_num) {
+  if (frame_num >= frames_.size()) {
+    return "";
+  }
+  return FormatFrameData(&frames_[frame_num]);
+}
+
+std::string Backtrace::FormatFrameData(const backtrace_frame_data_t* frame) {
+  const char* map_name;
+  if (frame->map && !frame->map->name.empty()) {
+    map_name = frame->map->name.c_str();
+  } else {
+    map_name = "<unknown>";
+  }
+
+  uintptr_t relative_pc;
+  if (frame->map) {
+    relative_pc = frame->pc - frame->map->start;
+  } else {
+    relative_pc = frame->pc;
+  }
+
+  char buf[512];
+  if (!frame->func_name.empty() && frame->func_offset) {
+    snprintf(buf, sizeof(buf), "#%02zu pc %0*" PRIxPTR "  %s (%s+%" PRIuPTR ")",
+             frame->num, (int)sizeof(uintptr_t)*2, relative_pc, map_name,
+             frame->func_name.c_str(), frame->func_offset);
+  } else if (!frame->func_name.empty()) {
+    snprintf(buf, sizeof(buf), "#%02zu pc %0*" PRIxPTR "  %s (%s)", frame->num,
+             (int)sizeof(uintptr_t)*2, relative_pc, map_name, frame->func_name.c_str());
+  } else {
+    snprintf(buf, sizeof(buf), "#%02zu pc %0*" PRIxPTR "  %s", frame->num,
+             (int)sizeof(uintptr_t)*2, relative_pc, map_name);
+  }
+
+  return buf;
+}
+
+const backtrace_map_t* Backtrace::FindMap(uintptr_t pc) {
+  return map_->Find(pc);
+}
+
+//-------------------------------------------------------------------------
+// BacktraceCurrent functions.
+//-------------------------------------------------------------------------
+BacktraceCurrent::BacktraceCurrent(
+    BacktraceImpl* impl, BacktraceMap* map) : Backtrace(impl, getpid(), map) {
+}
+
+BacktraceCurrent::~BacktraceCurrent() {
+}
+
+bool BacktraceCurrent::ReadWord(uintptr_t ptr, uint32_t* out_value) {
+  if (!VerifyReadWordArgs(ptr, out_value)) {
+    return false;
+  }
+
+  const backtrace_map_t* map = FindMap(ptr);
+  if (map && map->flags & PROT_READ) {
+    *out_value = *reinterpret_cast<uint32_t*>(ptr);
+    return true;
+  } else {
+    BACK_LOGW("pointer %p not in a readable map", reinterpret_cast<void*>(ptr));
+    *out_value = static_cast<uint32_t>(-1);
+    return false;
+  }
+}
+
+//-------------------------------------------------------------------------
+// BacktracePtrace functions.
+//-------------------------------------------------------------------------
+BacktracePtrace::BacktracePtrace(
+    BacktraceImpl* impl, pid_t pid, pid_t tid, BacktraceMap* map)
+    : Backtrace(impl, pid, map) {
+  tid_ = tid;
+}
+
+BacktracePtrace::~BacktracePtrace() {
+}
+
+bool BacktracePtrace::ReadWord(uintptr_t ptr, uint32_t* out_value) {
+  if (!VerifyReadWordArgs(ptr, out_value)) {
+    return false;
+  }
+
+#if defined(__APPLE__)
+  BACK_LOGW("MacOS does not support reading from another pid.");
+  return false;
+#else
+  // ptrace() returns -1 and sets errno when the operation fails.
+  // To disambiguate -1 from a valid result, we clear errno beforehand.
+  errno = 0;
+  *out_value = ptrace(PTRACE_PEEKTEXT, Tid(), reinterpret_cast<void*>(ptr), NULL);
+  if (*out_value == static_cast<uint32_t>(-1) && errno) {
+    BACK_LOGW("invalid pointer %p reading from tid %d, ptrace() strerror(errno)=%s",
+              reinterpret_cast<void*>(ptr), Tid(), strerror(errno));
+    return false;
+  }
+  return true;
+#endif
+}
+
+Backtrace* Backtrace::Create(pid_t pid, pid_t tid, BacktraceMap* map) {
+  if (pid == BACKTRACE_CURRENT_PROCESS || pid == getpid()) {
+    if (tid == BACKTRACE_CURRENT_THREAD || tid == gettid()) {
+      return CreateCurrentObj(map);
+    } else {
+      return CreateThreadObj(tid, map);
+    }
+  } else if (tid == BACKTRACE_CURRENT_THREAD) {
+    return CreatePtraceObj(pid, pid, map);
+  } else {
+    return CreatePtraceObj(pid, tid, map);
+  }
+}
diff --git a/libbacktrace/Backtrace.h b/libbacktrace/BacktraceImpl.h
similarity index 60%
rename from libbacktrace/Backtrace.h
rename to libbacktrace/BacktraceImpl.h
index d741ef1..af014d5 100644
--- a/libbacktrace/Backtrace.h
+++ b/libbacktrace/BacktraceImpl.h
@@ -14,12 +14,14 @@
  * limitations under the License.
  */
 
-#ifndef _LIBBACKTRACE_BACKTRACE_H
-#define _LIBBACKTRACE_BACKTRACE_H
+#ifndef _LIBBACKTRACE_BACKTRACE_IMPL_H
+#define _LIBBACKTRACE_BACKTRACE_IMPL_H
 
 #include <backtrace/Backtrace.h>
+#include <backtrace/BacktraceMap.h>
 
 #include <sys/types.h>
+#include <log/log.h>
 
 // Macro to log the function name along with the warning message.
 #define BACK_LOGW(format, ...) \
@@ -37,15 +39,26 @@
 
   void SetParent(Backtrace* backtrace) { backtrace_obj_ = backtrace; }
 
+  inline pid_t Pid() { return backtrace_obj_->Pid(); }
+  inline pid_t Tid() { return backtrace_obj_->Tid(); }
+
+  inline const backtrace_map_t* FindMap(uintptr_t addr) {
+    return backtrace_obj_->FindMap(addr);
+  }
+  inline std::string GetFunctionName(uintptr_t pc, uintptr_t* offset) {
+    return backtrace_obj_->GetFunctionName(pc, offset);
+  }
+  inline BacktraceMap* GetMap() { return backtrace_obj_->GetMap(); }
+
 protected:
-  backtrace_t* GetBacktraceData();
+  inline std::vector<backtrace_frame_data_t>* GetFrames() { return &backtrace_obj_->frames_; }
 
   Backtrace* backtrace_obj_;
 };
 
 class BacktraceCurrent : public Backtrace {
 public:
-  BacktraceCurrent(BacktraceImpl* impl, backtrace_map_info_t* map_info);
+  BacktraceCurrent(BacktraceImpl* impl, BacktraceMap* map);
   virtual ~BacktraceCurrent();
 
   bool ReadWord(uintptr_t ptr, uint32_t* out_value);
@@ -53,14 +66,14 @@
 
 class BacktracePtrace : public Backtrace {
 public:
-  BacktracePtrace(BacktraceImpl* impl, pid_t pid, pid_t tid, backtrace_map_info_t* map_info);
+  BacktracePtrace(BacktraceImpl* impl, pid_t pid, pid_t tid, BacktraceMap* map);
   virtual ~BacktracePtrace();
 
   bool ReadWord(uintptr_t ptr, uint32_t* out_value);
 };
 
-Backtrace* CreateCurrentObj(backtrace_map_info_t* map_info);
-Backtrace* CreatePtraceObj(pid_t pid, pid_t tid, backtrace_map_info_t* map_info);
-Backtrace* CreateThreadObj(pid_t tid, backtrace_map_info_t* map_info);
+Backtrace* CreateCurrentObj(BacktraceMap* map);
+Backtrace* CreatePtraceObj(pid_t pid, pid_t tid, BacktraceMap* map);
+Backtrace* CreateThreadObj(pid_t tid, BacktraceMap* map);
 
-#endif // _LIBBACKTRACE_BACKTRACE_H
+#endif // _LIBBACKTRACE_BACKTRACE_IMPL_H
diff --git a/libbacktrace/BacktraceMap.cpp b/libbacktrace/BacktraceMap.cpp
new file mode 100644
index 0000000..6320800
--- /dev/null
+++ b/libbacktrace/BacktraceMap.cpp
@@ -0,0 +1,147 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <ctype.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include <string>
+#include <vector>
+
+#include <backtrace/backtrace_constants.h>
+#include <backtrace/BacktraceMap.h>
+#include <log/log.h>
+
+#include "thread_utils.h"
+#include "BacktraceImpl.h"
+
+BacktraceMap::BacktraceMap(pid_t pid) : pid_(pid) {
+  if (pid_ < 0) {
+    pid_ = getpid();
+  }
+}
+
+BacktraceMap::~BacktraceMap() {
+}
+
+const backtrace_map_t* BacktraceMap::Find(uintptr_t addr) {
+  for (BacktraceMap::const_iterator it = begin();
+       it != end(); ++it) {
+    if (addr >= it->start && addr < it->end) {
+      return &*it;
+    }
+  }
+  return NULL;
+}
+
+bool BacktraceMap::ParseLine(const char* line, backtrace_map_t* map) {
+  unsigned long int start;
+  unsigned long int end;
+  char permissions[5];
+  int name_pos;
+
+#if defined(__APPLE__)
+// Mac OS vmmap(1) output:
+// __TEXT                 0009f000-000a1000 [    8K     8K] r-x/rwx SM=COW  /Volumes/android/dalvik-dev/out/host/darwin-x86/bin/libcorkscrew_test\n
+// 012345678901234567890123456789012345678901234567890123456789
+// 0         1         2         3         4         5
+  if (sscanf(line, "%*21c %lx-%lx [%*13c] %3c/%*3c SM=%*3c  %n",
+             &start, &end, permissions, &name_pos) != 3) {
+#else
+// Linux /proc/<pid>/maps lines:
+// 6f000000-6f01e000 rwxp 00000000 00:0c 16389419   /system/lib/libcomposer.so\n
+// 012345678901234567890123456789012345678901234567890123456789
+// 0         1         2         3         4         5
+  if (sscanf(line, "%lx-%lx %4s %*x %*x:%*x %*d%n",
+             &start, &end, permissions, &name_pos) != 3) {
+#endif
+    return false;
+  }
+
+  map->start = start;
+  map->end = end;
+  map->flags = PROT_NONE;
+  if (permissions[0] == 'r') {
+    map->flags |= PROT_READ;
+  }
+  if (permissions[1] == 'w') {
+    map->flags |= PROT_WRITE;
+  }
+  if (permissions[2] == 'x') {
+    map->flags |= PROT_EXEC;
+  }
+
+  while (isspace(line[name_pos])) {
+    name_pos += 1;
+  }
+  map->name = line+name_pos;
+  if (!map->name.empty() && map->name[map->name.length()-1] == '\n') {
+    map->name.erase(map->name.length()-1);
+  }
+
+  ALOGV("Parsed map: start=%p, end=%p, flags=%x, name=%s",
+        map->start, map->end, map->flags, map->name.c_str());
+  return true;
+}
+
+bool BacktraceMap::Build() {
+#if defined(__APPLE__)
+  char cmd[sizeof(pid_t)*3 + sizeof("vmmap -w -resident -submap -allSplitLibs -interleaved ") + 1];
+#else
+  char path[sizeof(pid_t)*3 + sizeof("/proc//maps") + 1];
+#endif
+  char line[1024];
+
+#if defined(__APPLE__)
+  // cmd is guaranteed to always be big enough to hold this string.
+  sprintf(cmd, "vmmap -w -resident -submap -allSplitLibs -interleaved %d", pid_);
+  FILE* fp = popen(cmd, "r");
+#else
+  // path is guaranteed to always be big enough to hold this string.
+  sprintf(path, "/proc/%d/maps", pid_);
+  FILE* fp = fopen(path, "r");
+#endif
+  if (fp == NULL) {
+    return false;
+  }
+
+  while(fgets(line, sizeof(line), fp)) {
+    backtrace_map_t map;
+    if (ParseLine(line, &map)) {
+      maps_.push_back(map);
+    }
+  }
+#if defined(__APPLE__)
+  pclose(fp);
+#else
+  fclose(fp);
+#endif
+
+  return true;
+}
+
+#if defined(__APPLE__)
+// Corkscrew and libunwind don't compile on the mac, so create a generic
+// map object.
+BacktraceMap* BacktraceMap::Create(pid_t pid) {
+  BacktraceMap* map = new BacktraceMap(pid);
+  if (!map->Build()) {
+    delete map;
+    return NULL;
+  }
+  return map;
+}
+#endif
diff --git a/libbacktrace/BacktraceThread.cpp b/libbacktrace/BacktraceThread.cpp
index 70616b0..5ffe516 100644
--- a/libbacktrace/BacktraceThread.cpp
+++ b/libbacktrace/BacktraceThread.cpp
@@ -22,7 +22,6 @@
 #include <sys/types.h>
 
 #include <cutils/atomic.h>
-#include <cutils/log.h>
 
 #include "BacktraceThread.h"
 #include "thread_utils.h"
@@ -115,30 +114,21 @@
 
 BacktraceThread::BacktraceThread(
     BacktraceImpl* impl, BacktraceThreadInterface* thread_intf, pid_t tid,
-    backtrace_map_info_t* map_info)
-    : BacktraceCurrent(impl, map_info), thread_intf_(thread_intf) {
-  backtrace_.tid = tid;
+    BacktraceMap* map)
+    : BacktraceCurrent(impl, map), thread_intf_(thread_intf) {
+  tid_ = tid;
 }
 
 BacktraceThread::~BacktraceThread() {
 }
 
 void BacktraceThread::FinishUnwind() {
-  for (size_t i = 0; i < NumFrames(); i++) {
-    backtrace_frame_data_t* frame = &backtrace_.frames[i];
+  for (std::vector<backtrace_frame_data_t>::iterator it = frames_.begin();
+       it != frames_.end(); ++it) {
+    it->map = FindMap(it->pc);
 
-    frame->map_offset = 0;
-    uintptr_t map_start;
-    frame->map_name = GetMapName(frame->pc, &map_start);
-    if (frame->map_name) {
-      frame->map_offset = frame->pc - map_start;
-    }
-
-    frame->func_offset = 0;
-    std::string func_name = GetFunctionName(frame->pc, &frame->func_offset);
-    if (!func_name.empty()) {
-      frame->func_name = strdup(func_name.c_str());
-    }
+    it->func_offset = 0;
+    it->func_name = GetFunctionName(it->pc, &it->func_offset);
   }
 }
 
@@ -190,10 +180,6 @@
 }
 
 bool BacktraceThread::Unwind(size_t num_ignore_frames) {
-  if (!thread_intf_->Init()) {
-    return false;
-  }
-
   ThreadEntry* entry = ThreadEntry::AddThreadToUnwind(
       thread_intf_, Pid(), Tid(), num_ignore_frames);
   if (!entry) {
diff --git a/libbacktrace/BacktraceThread.h b/libbacktrace/BacktraceThread.h
index bcb56c9..3412d58 100644
--- a/libbacktrace/BacktraceThread.h
+++ b/libbacktrace/BacktraceThread.h
@@ -18,17 +18,16 @@
 #define _LIBBACKTRACE_BACKTRACE_THREAD_H
 
 #include <inttypes.h>
-#include <pthread.h>
 #include <sys/types.h>
 
-#include "Backtrace.h"
+#include "BacktraceImpl.h"
 
-typedef enum {
+enum state_e {
   STATE_WAITING = 0,
   STATE_DUMPING,
   STATE_DONE,
   STATE_CANCEL,
-} state_e;
+};
 
 class BacktraceThreadInterface;
 
@@ -59,8 +58,6 @@
 public:
   virtual ~BacktraceThreadInterface() { }
 
-  virtual bool Init() = 0;
-
   virtual void ThreadUnwind(
       siginfo_t* siginfo, void* sigcontext, size_t num_ignore_frames) = 0;
 };
@@ -72,7 +69,7 @@
   // subclass both.
   BacktraceThread(
       BacktraceImpl* impl, BacktraceThreadInterface* thread_intf, pid_t tid,
-      backtrace_map_info_t* map_info);
+      BacktraceMap* map);
   virtual ~BacktraceThread();
 
   virtual bool Unwind(size_t num_ignore_frames);
diff --git a/libbacktrace/Corkscrew.cpp b/libbacktrace/Corkscrew.cpp
index eae13c6..efeee2e 100644
--- a/libbacktrace/Corkscrew.cpp
+++ b/libbacktrace/Corkscrew.cpp
@@ -16,12 +16,11 @@
 
 #define LOG_TAG "libbacktrace"
 
-#include <backtrace/backtrace.h>
+#include <backtrace/Backtrace.h>
 
 #include <string.h>
 
 #include <backtrace-arch.h>
-#include <cutils/log.h>
 #include <corkscrew/backtrace.h>
 
 #ifndef __USE_GNU
@@ -32,6 +31,49 @@
 #include "Corkscrew.h"
 
 //-------------------------------------------------------------------------
+// CorkscrewMap functions.
+//-------------------------------------------------------------------------
+CorkscrewMap::CorkscrewMap(pid_t pid) : BacktraceMap(pid), map_info_(NULL) {
+}
+
+CorkscrewMap::~CorkscrewMap() {
+  if (map_info_) {
+    free_map_info_list(map_info_);
+    map_info_ = NULL;
+  }
+}
+
+bool CorkscrewMap::Build() {
+  map_info_ = load_map_info_list(pid_);
+
+  // Use the information in map_info_ to construct the BacktraceMap data
+  // rather than reparsing /proc/self/maps.
+  map_info_t* cur_map = map_info_;
+  while (cur_map) {
+    backtrace_map_t map;
+    map.start = cur_map->start;
+    map.end = cur_map->end;
+    map.flags = 0;
+    if (cur_map->is_readable) {
+      map.flags |= PROT_READ;
+    }
+    if (cur_map->is_writable) {
+      map.flags |= PROT_WRITE;
+    }
+    if (cur_map->is_executable) {
+      map.flags |= PROT_EXEC;
+    }
+    map.name = cur_map->name;
+
+    // The maps are in descending order, but we want them in ascending order.
+    maps_.push_front(map);
+
+    cur_map = cur_map->next;
+  }
+  return map_info_ != NULL;
+}
+
+//-------------------------------------------------------------------------
 // CorkscrewCommon functions.
 //-------------------------------------------------------------------------
 bool CorkscrewCommon::GenerateFrameData(
@@ -41,28 +83,19 @@
     return false;
   }
 
-  backtrace_t* data = GetBacktraceData();
-  data->num_frames = num_frames;
-  for (size_t i = 0; i < data->num_frames; i++) {
-    backtrace_frame_data_t* frame = &data->frames[i];
-    frame->pc = cork_frames[i].absolute_pc;
-    frame->sp = cork_frames[i].stack_top;
-    frame->stack_size = cork_frames[i].stack_size;
-    frame->map_name = NULL;
-    frame->map_offset = 0;
-    frame->func_name = NULL;
-    frame->func_offset = 0;
+  std::vector<backtrace_frame_data_t>* frames = GetFrames();
+  frames->resize(num_frames);
+  size_t i = 0;
+  for (std::vector<backtrace_frame_data_t>::iterator it = frames->begin();
+       it != frames->end(); ++it, ++i) {
+    it->num = i;
+    it->pc = cork_frames[i].absolute_pc;
+    it->sp = cork_frames[i].stack_top;
+    it->stack_size = cork_frames[i].stack_size;
+    it->func_offset = 0;
 
-    uintptr_t map_start;
-    frame->map_name = backtrace_obj_->GetMapName(frame->pc, &map_start);
-    if (frame->map_name) {
-      frame->map_offset = frame->pc - map_start;
-    }
-
-    std::string func_name = backtrace_obj_->GetFunctionName(frame->pc, &frame->func_offset);
-    if (!func_name.empty()) {
-      frame->func_name = strdup(func_name.c_str());
-    }
+    it->map = FindMap(it->pc);
+    it->func_name = GetFunctionName(it->pc, &it->func_offset);
   }
   return true;
 }
@@ -87,23 +120,23 @@
   *offset = 0;
 
   Dl_info info;
-  const backtrace_map_info_t* map_info = backtrace_obj_->FindMapInfo(pc);
-  if (map_info) {
+  const backtrace_map_t* map = FindMap(pc);
+  if (map) {
     if (dladdr((const void*)pc, &info)) {
       if (info.dli_sname) {
-        *offset = pc - map_info->start - (uintptr_t)info.dli_saddr + (uintptr_t)info.dli_fbase;
+        *offset = pc - map->start - (uintptr_t)info.dli_saddr + (uintptr_t)info.dli_fbase;
         return info.dli_sname;
       }
     } else {
       // dladdr(3) didn't find a symbol; maybe it's static? Look in the ELF file...
-      symbol_table_t* symbol_table = load_symbol_table(map_info->name);
+      symbol_table_t* symbol_table = load_symbol_table(map->name.c_str());
       if (symbol_table) {
         // First check if we can find the symbol using a relative pc.
         std::string name;
-        const symbol_t* elf_symbol = find_symbol(symbol_table, pc - map_info->start);
+        const symbol_t* elf_symbol = find_symbol(symbol_table, pc - map->start);
         if (elf_symbol) {
           name = elf_symbol->name;
-          *offset = pc - map_info->start - elf_symbol->start;
+          *offset = pc - map->start - elf_symbol->start;
         } else if ((elf_symbol = find_symbol(symbol_table, pc)) != NULL) {
           // Found the symbol using the absolute pc.
           name = elf_symbol->name;
@@ -124,38 +157,27 @@
 }
 
 CorkscrewThread::~CorkscrewThread() {
-  if (corkscrew_map_info_) {
-    free_map_info_list(corkscrew_map_info_);
-    corkscrew_map_info_ = NULL;
-  }
-}
-
-bool CorkscrewThread::Init() {
-  corkscrew_map_info_ = load_map_info_list(backtrace_obj_->Pid());
-  return corkscrew_map_info_ != NULL;
 }
 
 void CorkscrewThread::ThreadUnwind(
     siginfo_t* siginfo, void* sigcontext, size_t num_ignore_frames) {
-  backtrace_frame_t frames[MAX_BACKTRACE_FRAMES];
+  backtrace_frame_t cork_frames[MAX_BACKTRACE_FRAMES];
+  CorkscrewMap* map = static_cast<CorkscrewMap*>(GetMap());
   ssize_t num_frames = unwind_backtrace_signal_arch(
-      siginfo, sigcontext, corkscrew_map_info_, frames, num_ignore_frames,
-      MAX_BACKTRACE_FRAMES);
+      siginfo, sigcontext, map->GetMapInfo(), cork_frames,
+      num_ignore_frames, MAX_BACKTRACE_FRAMES);
   if (num_frames > 0) {
-    backtrace_t* data = GetBacktraceData();
-    data->num_frames = num_frames;
-    for (size_t i = 0; i < data->num_frames; i++) {
-      backtrace_frame_data_t* frame = &data->frames[i];
-      frame->pc = frames[i].absolute_pc;
-      frame->sp = frames[i].stack_top;
-      frame->stack_size = frames[i].stack_size;
-
-      frame->map_offset = 0;
-      frame->map_name = NULL;
-      frame->map_offset = 0;
-
-      frame->func_offset = 0;
-      frame->func_name = NULL;
+    std::vector<backtrace_frame_data_t>* frames = GetFrames();
+    frames->resize(num_frames);
+    size_t i = 0;
+    for (std::vector<backtrace_frame_data_t>::iterator it = frames->begin();
+         it != frames->end(); ++it, ++i) {
+      it->num = i;
+      it->pc = cork_frames[i].absolute_pc;
+      it->sp = cork_frames[i].stack_top;
+      it->stack_size = cork_frames[i].stack_size;
+      it->map = NULL;
+      it->func_offset = 0;
     }
   }
 }
@@ -174,12 +196,11 @@
 }
 
 bool CorkscrewPtrace::Unwind(size_t num_ignore_frames) {
-  ptrace_context_ = load_ptrace_context(backtrace_obj_->Tid());
+  ptrace_context_ = load_ptrace_context(Tid());
 
   backtrace_frame_t frames[MAX_BACKTRACE_FRAMES];
   ssize_t num_frames = unwind_backtrace_ptrace(
-      backtrace_obj_->Tid(), ptrace_context_, frames, num_ignore_frames,
-      MAX_BACKTRACE_FRAMES);
+      Tid(), ptrace_context_, frames, num_ignore_frames, MAX_BACKTRACE_FRAMES);
 
   return GenerateFrameData(frames, num_frames);
 }
@@ -204,15 +225,27 @@
 //-------------------------------------------------------------------------
 // C++ object creation functions.
 //-------------------------------------------------------------------------
-Backtrace* CreateCurrentObj(backtrace_map_info_t* map_info) {
-  return new BacktraceCurrent(new CorkscrewCurrent(), map_info);
+Backtrace* CreateCurrentObj(BacktraceMap* map) {
+  return new BacktraceCurrent(new CorkscrewCurrent(), map);
 }
 
-Backtrace* CreatePtraceObj(pid_t pid, pid_t tid, backtrace_map_info_t* map_info) {
-  return new BacktracePtrace(new CorkscrewPtrace(), pid, tid, map_info);
+Backtrace* CreatePtraceObj(pid_t pid, pid_t tid, BacktraceMap* map) {
+  return new BacktracePtrace(new CorkscrewPtrace(), pid, tid, map);
 }
 
-Backtrace* CreateThreadObj(pid_t tid, backtrace_map_info_t* map_info) {
+Backtrace* CreateThreadObj(pid_t tid, BacktraceMap* map) {
   CorkscrewThread* thread_obj = new CorkscrewThread();
-  return new BacktraceThread(thread_obj, thread_obj, tid, map_info);
+  return new BacktraceThread(thread_obj, thread_obj, tid, map);
+}
+
+//-------------------------------------------------------------------------
+// BacktraceMap create function.
+//-------------------------------------------------------------------------
+BacktraceMap* BacktraceMap::Create(pid_t pid) {
+  BacktraceMap* map = new CorkscrewMap(pid);
+  if (!map->Build()) {
+    delete map;
+    return NULL;
+  }
+  return map;
 }
diff --git a/libbacktrace/Corkscrew.h b/libbacktrace/Corkscrew.h
index 7cb125c..1633398 100644
--- a/libbacktrace/Corkscrew.h
+++ b/libbacktrace/Corkscrew.h
@@ -21,14 +21,27 @@
 
 #include <string>
 
-#include <backtrace/backtrace.h>
 #include <backtrace/Backtrace.h>
+#include <backtrace/BacktraceMap.h>
 
 #include <corkscrew/backtrace.h>
 
-#include "Backtrace.h"
+#include "BacktraceImpl.h"
 #include "BacktraceThread.h"
 
+class CorkscrewMap : public BacktraceMap {
+public:
+  CorkscrewMap(pid_t pid);
+  virtual ~CorkscrewMap();
+
+  virtual bool Build();
+
+  map_info_t* GetMapInfo() { return map_info_; }
+
+private:
+  map_info_t* map_info_;
+};
+
 class CorkscrewCommon : public BacktraceImpl {
 public:
   bool GenerateFrameData(backtrace_frame_t* cork_frames, ssize_t num_frames);
@@ -49,13 +62,8 @@
   CorkscrewThread();
   virtual ~CorkscrewThread();
 
-  virtual bool Init();
-
   virtual void ThreadUnwind(
       siginfo_t* siginfo, void* sigcontext, size_t num_ignore_frames);
-
-private:
-  map_info_t* corkscrew_map_info_;
 };
 
 class CorkscrewPtrace : public CorkscrewCommon {
diff --git a/libbacktrace/UnwindCurrent.cpp b/libbacktrace/UnwindCurrent.cpp
index 94a82fe..17b71b9 100644
--- a/libbacktrace/UnwindCurrent.cpp
+++ b/libbacktrace/UnwindCurrent.cpp
@@ -18,14 +18,14 @@
 
 #include <sys/types.h>
 
-#include <cutils/log.h>
-
-#include <backtrace/backtrace.h>
+#include <backtrace/Backtrace.h>
+#include <backtrace/BacktraceMap.h>
 
 #define UNW_LOCAL_ONLY
 #include <libunwind.h>
 
 #include "UnwindCurrent.h"
+#include "UnwindMap.h"
 
 // Define the ucontext_t structures needed for each supported arch.
 #if defined(__arm__)
@@ -44,7 +44,7 @@
   #include <asm/sigcontext.h>
   #include <asm/ucontext.h>
   typedef struct ucontext ucontext_t;
-#elif !defined(__mips__)
+#elif !defined(__mips__) && !defined(__aarch64__)
   #error Unsupported architecture.
 #endif
 
@@ -79,9 +79,6 @@
 }
 
 bool UnwindCurrent::UnwindFromContext(size_t num_ignore_frames, bool resolve) {
-  backtrace_t* backtrace = GetBacktraceData();
-  backtrace->num_frames = 0;
-
   // The cursor structure is pretty large, do not put it on the stack.
   unw_cursor_t* cursor = new unw_cursor_t;
   int ret = unw_init_local(cursor, &context_);
@@ -91,6 +88,9 @@
     return false;
   }
 
+  std::vector<backtrace_frame_data_t>* frames = GetFrames();
+  frames->reserve(MAX_BACKTRACE_FRAMES);
+  size_t num_frames = 0;
   do {
     unw_word_t pc;
     ret = unw_get_reg(cursor, UNW_REG_IP, &pc);
@@ -106,41 +106,32 @@
     }
 
     if (num_ignore_frames == 0) {
-      size_t num_frames = backtrace->num_frames;
-      backtrace_frame_data_t* frame = &backtrace->frames[num_frames];
+      frames->resize(num_frames+1);
+      backtrace_frame_data_t* frame = &frames->at(num_frames);
+      frame->num = num_frames;
       frame->pc = static_cast<uintptr_t>(pc);
       frame->sp = static_cast<uintptr_t>(sp);
       frame->stack_size = 0;
-      frame->map_name = NULL;
-      frame->map_offset = 0;
-      frame->func_name = NULL;
-      frame->func_offset = 0;
 
       if (num_frames > 0) {
         // Set the stack size for the previous frame.
-        backtrace_frame_data_t* prev = &backtrace->frames[num_frames-1];
+        backtrace_frame_data_t* prev = &frames->at(num_frames-1);
         prev->stack_size = frame->sp - prev->sp;
       }
 
       if (resolve) {
-        std::string func_name = backtrace_obj_->GetFunctionName(frame->pc, &frame->func_offset);
-        if (!func_name.empty()) {
-          frame->func_name = strdup(func_name.c_str());
-        }
-
-        uintptr_t map_start;
-        frame->map_name = backtrace_obj_->GetMapName(frame->pc, &map_start);
-        if (frame->map_name) {
-          frame->map_offset = frame->pc - map_start;
-        }
+        frame->func_name = GetFunctionName(frame->pc, &frame->func_offset);
+        frame->map = FindMap(frame->pc);
+      } else {
+        frame->map = NULL;
+        frame->func_offset = 0;
       }
-
-      backtrace->num_frames++;
+      num_frames++;
     } else {
       num_ignore_frames--;
     }
     ret = unw_step (cursor);
-  } while (ret > 0 && backtrace->num_frames < MAX_BACKTRACE_FRAMES);
+  } while (ret > 0 && num_frames < MAX_BACKTRACE_FRAMES);
 
   delete cursor;
   return true;
@@ -181,10 +172,6 @@
 UnwindThread::~UnwindThread() {
 }
 
-bool UnwindThread::Init() {
-  return true;
-}
-
 void UnwindThread::ThreadUnwind(
     siginfo_t* /*siginfo*/, void* sigcontext, size_t num_ignore_frames) {
   ExtractContext(sigcontext);
@@ -194,11 +181,11 @@
 //-------------------------------------------------------------------------
 // C++ object creation function.
 //-------------------------------------------------------------------------
-Backtrace* CreateCurrentObj(backtrace_map_info_t* map_info) {
-  return new BacktraceCurrent(new UnwindCurrent(), map_info);
+Backtrace* CreateCurrentObj(BacktraceMap* map) {
+  return new BacktraceCurrent(new UnwindCurrent(), map);
 }
 
-Backtrace* CreateThreadObj(pid_t tid, backtrace_map_info_t* map_info) {
+Backtrace* CreateThreadObj(pid_t tid, BacktraceMap* map) {
   UnwindThread* thread_obj = new UnwindThread();
-  return new BacktraceThread(thread_obj, thread_obj, tid, map_info);
+  return new BacktraceThread(thread_obj, thread_obj, tid, map);
 }
diff --git a/libbacktrace/UnwindCurrent.h b/libbacktrace/UnwindCurrent.h
index 7dc977d..acce110 100644
--- a/libbacktrace/UnwindCurrent.h
+++ b/libbacktrace/UnwindCurrent.h
@@ -19,7 +19,7 @@
 
 #include <string>
 
-#include "Backtrace.h"
+#include "BacktraceImpl.h"
 #include "BacktraceThread.h"
 
 #define UNW_LOCAL_ONLY
@@ -47,8 +47,6 @@
   UnwindThread();
   virtual ~UnwindThread();
 
-  virtual bool Init();
-
   virtual void ThreadUnwind(
       siginfo_t* siginfo, void* sigcontext, size_t num_ignore_frames);
 };
diff --git a/libbacktrace/UnwindMap.cpp b/libbacktrace/UnwindMap.cpp
new file mode 100644
index 0000000..03bb192
--- /dev/null
+++ b/libbacktrace/UnwindMap.cpp
@@ -0,0 +1,110 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "libbacktrace"
+
+#include <pthread.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include <backtrace/BacktraceMap.h>
+
+#include <libunwind.h>
+
+#include "UnwindMap.h"
+
+//-------------------------------------------------------------------------
+// libunwind has a single shared address space for the current process
+// aka local. If multiple maps are created for the current pid, then
+// only update the local address space once, and keep a reference count
+// of maps using the same map cursor.
+//-------------------------------------------------------------------------
+static pthread_mutex_t g_map_mutex = PTHREAD_MUTEX_INITIALIZER;
+static unw_map_cursor_t g_map_cursor;
+static int g_map_references = 0;
+
+UnwindMap::UnwindMap(pid_t pid) : BacktraceMap(pid) {
+  map_cursor_.map_list = NULL;
+}
+
+UnwindMap::~UnwindMap() {
+  if (pid_ == getpid()) {
+    pthread_mutex_lock(&g_map_mutex);
+    if (--g_map_references == 0) {
+      // Clear the local address space map.
+      unw_map_set(unw_local_addr_space, NULL);
+      unw_map_cursor_destroy(&map_cursor_);
+    }
+    pthread_mutex_unlock(&g_map_mutex);
+  } else {
+    unw_map_cursor_destroy(&map_cursor_);
+  }
+}
+
+bool UnwindMap::Build() {
+  bool return_value = true;
+  if (pid_ == getpid()) {
+    pthread_mutex_lock(&g_map_mutex);
+    if (g_map_references == 0) {
+      return_value = (unw_map_cursor_create(&map_cursor_, pid_) == 0);
+      if (return_value) {
+        // Set the local address space to this cursor map.
+        unw_map_set(unw_local_addr_space, &map_cursor_);
+        g_map_references = 1;
+        g_map_cursor = map_cursor_;
+      }
+    } else {
+      g_map_references++;
+      map_cursor_ = g_map_cursor;
+    }
+    pthread_mutex_unlock(&g_map_mutex);
+  } else {
+    return_value = (unw_map_cursor_create(&map_cursor_, pid_) == 0);
+  }
+
+  if (!return_value)
+    return false;
+
+  // Use the map_cursor information to construct the BacktraceMap data
+  // rather than reparsing /proc/self/maps.
+  unw_map_cursor_reset(&map_cursor_);
+  unw_map_t unw_map;
+  while (unw_map_cursor_get(&map_cursor_, &unw_map)) {
+    backtrace_map_t map;
+
+    map.start = unw_map.start;
+    map.end = unw_map.end;
+    map.flags = unw_map.flags;
+    map.name = unw_map.path;
+
+    // The maps are in descending order, but we want them in ascending order.
+    maps_.push_front(map);
+  }
+
+  return true;
+}
+
+//-------------------------------------------------------------------------
+// BacktraceMap create function.
+//-------------------------------------------------------------------------
+BacktraceMap* BacktraceMap::Create(pid_t pid) {
+  BacktraceMap* map = new UnwindMap(pid);
+  if (!map->Build()) {
+    delete map;
+    return NULL;
+  }
+  return map;
+}
diff --git a/libbacktrace/UnwindMap.h b/libbacktrace/UnwindMap.h
new file mode 100644
index 0000000..5a874e8
--- /dev/null
+++ b/libbacktrace/UnwindMap.h
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef _LIBBACKTRACE_UNWIND_MAP_H
+#define _LIBBACKTRACE_UNWIND_MAP_H
+
+#include <backtrace/BacktraceMap.h>
+
+// The unw_map_cursor_t structure is different depending on whether it is
+// the local or remote version. In order to get the correct version, include
+// libunwind.h first then this header.
+
+class UnwindMap : public BacktraceMap {
+public:
+  UnwindMap(pid_t pid);
+  virtual ~UnwindMap();
+
+  virtual bool Build();
+
+  unw_map_cursor_t* GetMapCursor() { return &map_cursor_; }
+
+private:
+  unw_map_cursor_t map_cursor_;
+};
+
+#endif // _LIBBACKTRACE_UNWIND_MAP_H
diff --git a/libbacktrace/UnwindPtrace.cpp b/libbacktrace/UnwindPtrace.cpp
index 7a9bbdd..732dae8 100644
--- a/libbacktrace/UnwindPtrace.cpp
+++ b/libbacktrace/UnwindPtrace.cpp
@@ -16,16 +16,16 @@
 
 #define LOG_TAG "libbacktrace"
 
-#include <backtrace/backtrace.h>
+#include <backtrace/Backtrace.h>
+#include <backtrace/BacktraceMap.h>
 
 #include <sys/types.h>
 #include <string.h>
 
-#include <cutils/log.h>
-
 #include <libunwind.h>
 #include <libunwind-ptrace.h>
 
+#include "UnwindMap.h"
 #include "UnwindPtrace.h"
 
 UnwindPtrace::UnwindPtrace() : addr_space_(NULL), upt_info_(NULL) {
@@ -37,6 +37,10 @@
     upt_info_ = NULL;
   }
   if (addr_space_) {
+    // Remove the map from the address space before destroying it.
+    // It will be freed in the UnwindMap destructor.
+    unw_map_set(addr_space_, NULL);
+
     unw_destroy_addr_space(addr_space_);
     addr_space_ = NULL;
   }
@@ -49,15 +53,15 @@
     return false;
   }
 
-  upt_info_ = reinterpret_cast<struct UPT_info*>(_UPT_create(backtrace_obj_->Tid()));
+  UnwindMap* map = static_cast<UnwindMap*>(GetMap());
+  unw_map_set(addr_space_, map->GetMapCursor());
+
+  upt_info_ = reinterpret_cast<struct UPT_info*>(_UPT_create(Tid()));
   if (!upt_info_) {
     BACK_LOGW("Failed to create upt info.");
     return false;
   }
 
-  backtrace_t* backtrace = GetBacktraceData();
-  backtrace->num_frames = 0;
-
   unw_cursor_t cursor;
   int ret = unw_init_remote(&cursor, addr_space_, upt_info_);
   if (ret < 0) {
@@ -65,6 +69,9 @@
     return false;
   }
 
+  std::vector<backtrace_frame_data_t>* frames = GetFrames();
+  frames->reserve(MAX_BACKTRACE_FRAMES);
+  size_t num_frames = 0;
   do {
     unw_word_t pc;
     ret = unw_get_reg(&cursor, UNW_REG_IP, &pc);
@@ -80,38 +87,28 @@
     }
 
     if (num_ignore_frames == 0) {
-      size_t num_frames = backtrace->num_frames;
-      backtrace_frame_data_t* frame = &backtrace->frames[num_frames];
+      frames->resize(num_frames+1);
+      backtrace_frame_data_t* frame = &frames->at(num_frames);
+      frame->num = num_frames;
       frame->pc = static_cast<uintptr_t>(pc);
       frame->sp = static_cast<uintptr_t>(sp);
       frame->stack_size = 0;
-      frame->map_name = NULL;
-      frame->map_offset = 0;
-      frame->func_name = NULL;
-      frame->func_offset = 0;
 
       if (num_frames > 0) {
-        backtrace_frame_data_t* prev = &backtrace->frames[num_frames-1];
+        backtrace_frame_data_t* prev = &frames->at(num_frames-1);
         prev->stack_size = frame->sp - prev->sp;
       }
 
-      std::string func_name = backtrace_obj_->GetFunctionName(frame->pc, &frame->func_offset);
-      if (!func_name.empty()) {
-        frame->func_name = strdup(func_name.c_str());
-      }
+      frame->func_name = GetFunctionName(frame->pc, &frame->func_offset);
 
-      uintptr_t map_start;
-      frame->map_name = backtrace_obj_->GetMapName(frame->pc, &map_start);
-      if (frame->map_name) {
-        frame->map_offset = frame->pc - map_start;
-      }
+      frame->map = FindMap(frame->pc);
 
-      backtrace->num_frames++;
+      num_frames++;
     } else {
       num_ignore_frames--;
     }
     ret = unw_step (&cursor);
-  } while (ret > 0 && backtrace->num_frames < MAX_BACKTRACE_FRAMES);
+  } while (ret > 0 && num_frames < MAX_BACKTRACE_FRAMES);
 
   return true;
 }
@@ -131,6 +128,6 @@
 //-------------------------------------------------------------------------
 // C++ object creation function.
 //-------------------------------------------------------------------------
-Backtrace* CreatePtraceObj(pid_t pid, pid_t tid, backtrace_map_info_t* map_info) {
-  return new BacktracePtrace(new UnwindPtrace(), pid, tid, map_info);
+Backtrace* CreatePtraceObj(pid_t pid, pid_t tid, BacktraceMap* map) {
+  return new BacktracePtrace(new UnwindPtrace(), pid, tid, map);
 }
diff --git a/libbacktrace/UnwindPtrace.h b/libbacktrace/UnwindPtrace.h
index 781405b..1e82117 100644
--- a/libbacktrace/UnwindPtrace.h
+++ b/libbacktrace/UnwindPtrace.h
@@ -19,7 +19,7 @@
 
 #include <string>
 
-#include "Backtrace.h"
+#include "BacktraceImpl.h"
 
 #include <libunwind.h>
 
diff --git a/libbacktrace/backtrace_test.cpp b/libbacktrace/backtrace_test.cpp
index b894446..23eaf92 100644
--- a/libbacktrace/backtrace_test.cpp
+++ b/libbacktrace/backtrace_test.cpp
@@ -28,7 +28,9 @@
 #include <time.h>
 #include <unistd.h>
 
-#include <backtrace/backtrace.h>
+#include <backtrace/Backtrace.h>
+#include <backtrace/BacktraceMap.h>
+#include <UniquePtr.h>
 
 #include <cutils/atomic.h>
 #include <gtest/gtest.h>
@@ -49,18 +51,18 @@
 // Number of simultaneous threads running in our forked process.
 #define NUM_PTRACE_THREADS 5
 
-typedef struct {
+struct thread_t {
   pid_t tid;
   int32_t state;
   pthread_t threadId;
-} thread_t;
+};
 
-typedef struct {
+struct dump_thread_t {
   thread_t thread;
-  backtrace_context_t context;
+  Backtrace* backtrace;
   int32_t* now;
   int32_t done;
-} dump_thread_t;
+};
 
 extern "C" {
 // Prototypes for functions in the test library.
@@ -75,15 +77,14 @@
   return static_cast<uint64_t>(t.tv_sec * NS_PER_SEC + t.tv_nsec);
 }
 
-void DumpFrames(const backtrace_context_t* context) {
-  if (context->backtrace->num_frames == 0) {
+void DumpFrames(Backtrace* backtrace) {
+  if (backtrace->NumFrames() == 0) {
     printf("    No frames to dump\n");
-  } else {
-    char line[512];
-    for (size_t i = 0; i < context->backtrace->num_frames; i++) {
-      backtrace_format_frame_data(context, i, line, sizeof(line));
-      printf("    %s\n", line);
-    }
+    return;
+  }
+
+  for (size_t i = 0; i < backtrace->NumFrames(); i++) {
+    printf("    %s\n", backtrace->FormatFrameData(i).c_str());
   }
 }
 
@@ -100,12 +101,11 @@
   }
 }
 
-bool ReadyLevelBacktrace(const backtrace_t* backtrace) {
+bool ReadyLevelBacktrace(Backtrace* backtrace) {
   // See if test_level_four is in the backtrace.
   bool found = false;
-  for (size_t i = 0; i < backtrace->num_frames; i++) {
-    if (backtrace->frames[i].func_name != NULL &&
-        strcmp(backtrace->frames[i].func_name, "test_level_four") == 0) {
+  for (Backtrace::const_iterator it = backtrace->begin(); it != backtrace->end(); ++it) {
+    if (it->func_name == "test_level_four") {
       found = true;
       break;
     }
@@ -114,64 +114,55 @@
   return found;
 }
 
-void VerifyLevelDump(const backtrace_t* backtrace) {
-  ASSERT_GT(backtrace->num_frames, static_cast<size_t>(0));
-  ASSERT_LT(backtrace->num_frames, static_cast<size_t>(MAX_BACKTRACE_FRAMES));
+void VerifyLevelDump(Backtrace* backtrace) {
+  ASSERT_GT(backtrace->NumFrames(), static_cast<size_t>(0));
+  ASSERT_LT(backtrace->NumFrames(), static_cast<size_t>(MAX_BACKTRACE_FRAMES));
 
   // Look through the frames starting at the highest to find the
   // frame we want.
   size_t frame_num = 0;
-  for (size_t i = backtrace->num_frames-1; i > 2; i--) {
-    if (backtrace->frames[i].func_name != NULL &&
-        strcmp(backtrace->frames[i].func_name, "test_level_one") == 0) {
+  for (size_t i = backtrace->NumFrames()-1; i > 2; i--) {
+    if (backtrace->GetFrame(i)->func_name == "test_level_one") {
       frame_num = i;
       break;
     }
   }
-  ASSERT_GT(frame_num, static_cast<size_t>(0));
+  ASSERT_LT(static_cast<size_t>(0), frame_num);
+  ASSERT_LE(static_cast<size_t>(3), frame_num);
 
-  ASSERT_TRUE(NULL != backtrace->frames[frame_num].func_name);
-  ASSERT_STREQ(backtrace->frames[frame_num].func_name, "test_level_one");
-  ASSERT_TRUE(NULL != backtrace->frames[frame_num-1].func_name);
-  ASSERT_STREQ(backtrace->frames[frame_num-1].func_name, "test_level_two");
-  ASSERT_TRUE(NULL != backtrace->frames[frame_num-2].func_name);
-  ASSERT_STREQ(backtrace->frames[frame_num-2].func_name, "test_level_three");
-  ASSERT_TRUE(NULL != backtrace->frames[frame_num-3].func_name);
-  ASSERT_STREQ(backtrace->frames[frame_num-3].func_name, "test_level_four");
+  ASSERT_EQ(backtrace->GetFrame(frame_num)->func_name, "test_level_one");
+  ASSERT_EQ(backtrace->GetFrame(frame_num-1)->func_name, "test_level_two");
+  ASSERT_EQ(backtrace->GetFrame(frame_num-2)->func_name, "test_level_three");
+  ASSERT_EQ(backtrace->GetFrame(frame_num-3)->func_name, "test_level_four");
 }
 
 void VerifyLevelBacktrace(void*) {
-  backtrace_context_t context;
+  UniquePtr<Backtrace> backtrace(
+      Backtrace::Create(BACKTRACE_CURRENT_PROCESS, BACKTRACE_CURRENT_THREAD));
+  ASSERT_TRUE(backtrace.get() != NULL);
+  ASSERT_TRUE(backtrace->Unwind(0));
 
-  ASSERT_TRUE(backtrace_create_context(&context, BACKTRACE_CURRENT_PROCESS,
-                                       BACKTRACE_CURRENT_THREAD, 0));
-
-  VerifyLevelDump(context.backtrace);
-
-  backtrace_destroy_context(&context);
+  VerifyLevelDump(backtrace.get());
 }
 
-bool ReadyMaxBacktrace(const backtrace_t* backtrace) {
-  return (backtrace->num_frames == MAX_BACKTRACE_FRAMES);
+bool ReadyMaxBacktrace(Backtrace* backtrace) {
+  return (backtrace->NumFrames() == MAX_BACKTRACE_FRAMES);
 }
 
-void VerifyMaxDump(const backtrace_t* backtrace) {
-  ASSERT_EQ(backtrace->num_frames, static_cast<size_t>(MAX_BACKTRACE_FRAMES));
+void VerifyMaxDump(Backtrace* backtrace) {
+  ASSERT_EQ(backtrace->NumFrames(), static_cast<size_t>(MAX_BACKTRACE_FRAMES));
   // Verify that the last frame is our recursive call.
-  ASSERT_TRUE(NULL != backtrace->frames[MAX_BACKTRACE_FRAMES-1].func_name);
-  ASSERT_STREQ(backtrace->frames[MAX_BACKTRACE_FRAMES-1].func_name,
-               "test_recursive_call");
+  ASSERT_EQ(backtrace->GetFrame(MAX_BACKTRACE_FRAMES-1)->func_name,
+            "test_recursive_call");
 }
 
 void VerifyMaxBacktrace(void*) {
-  backtrace_context_t context;
+  UniquePtr<Backtrace> backtrace(
+      Backtrace::Create(BACKTRACE_CURRENT_PROCESS, BACKTRACE_CURRENT_THREAD));
+  ASSERT_TRUE(backtrace.get() != NULL);
+  ASSERT_TRUE(backtrace->Unwind(0));
 
-  ASSERT_TRUE(backtrace_create_context(&context, BACKTRACE_CURRENT_PROCESS,
-                                       BACKTRACE_CURRENT_THREAD, 0));
-
-  VerifyMaxDump(context.backtrace);
-
-  backtrace_destroy_context(&context);
+  VerifyMaxDump(backtrace.get());
 }
 
 void ThreadSetState(void* data) {
@@ -183,14 +174,12 @@
   }
 }
 
-void VerifyThreadTest(pid_t tid, void (*VerifyFunc)(const backtrace_t*)) {
-  backtrace_context_t context;
+void VerifyThreadTest(pid_t tid, void (*VerifyFunc)(Backtrace*)) {
+  UniquePtr<Backtrace> backtrace(Backtrace::Create(getpid(), tid));
+  ASSERT_TRUE(backtrace.get() != NULL);
+  ASSERT_TRUE(backtrace->Unwind(0));
 
-  backtrace_create_context(&context, getpid(), tid, 0);
-
-  VerifyFunc(context.backtrace);
-
-  backtrace_destroy_context(&context);
+  VerifyFunc(backtrace.get());
 }
 
 bool WaitForNonZero(int32_t* value, uint64_t seconds) {
@@ -208,52 +197,46 @@
 }
 
 void VerifyIgnoreFrames(
-    const backtrace_t* bt_all, const backtrace_t* bt_ign1,
-    const backtrace_t* bt_ign2, const char* cur_proc) {
-  EXPECT_EQ(bt_all->num_frames, bt_ign1->num_frames + 1);
-  EXPECT_EQ(bt_all->num_frames, bt_ign2->num_frames + 2);
+    Backtrace* bt_all, Backtrace* bt_ign1,
+    Backtrace* bt_ign2, const char* cur_proc) {
+  EXPECT_EQ(bt_all->NumFrames(), bt_ign1->NumFrames() + 1);
+  EXPECT_EQ(bt_all->NumFrames(), bt_ign2->NumFrames() + 2);
 
   // Check all of the frames are the same > the current frame.
   bool check = (cur_proc == NULL);
-  for (size_t i = 0; i < bt_ign2->num_frames; i++) {
+  for (size_t i = 0; i < bt_ign2->NumFrames(); i++) {
     if (check) {
-      EXPECT_EQ(bt_ign2->frames[i].pc, bt_ign1->frames[i+1].pc);
-      EXPECT_EQ(bt_ign2->frames[i].sp, bt_ign1->frames[i+1].sp);
-      EXPECT_EQ(bt_ign2->frames[i].stack_size, bt_ign1->frames[i+1].stack_size);
+      EXPECT_EQ(bt_ign2->GetFrame(i)->pc, bt_ign1->GetFrame(i+1)->pc);
+      EXPECT_EQ(bt_ign2->GetFrame(i)->sp, bt_ign1->GetFrame(i+1)->sp);
+      EXPECT_EQ(bt_ign2->GetFrame(i)->stack_size, bt_ign1->GetFrame(i+1)->stack_size);
 
-      EXPECT_EQ(bt_ign2->frames[i].pc, bt_all->frames[i+2].pc);
-      EXPECT_EQ(bt_ign2->frames[i].sp, bt_all->frames[i+2].sp);
-      EXPECT_EQ(bt_ign2->frames[i].stack_size, bt_all->frames[i+2].stack_size);
+      EXPECT_EQ(bt_ign2->GetFrame(i)->pc, bt_all->GetFrame(i+2)->pc);
+      EXPECT_EQ(bt_ign2->GetFrame(i)->sp, bt_all->GetFrame(i+2)->sp);
+      EXPECT_EQ(bt_ign2->GetFrame(i)->stack_size, bt_all->GetFrame(i+2)->stack_size);
     }
-    if (!check && bt_ign2->frames[i].func_name &&
-        strcmp(bt_ign2->frames[i].func_name, cur_proc) == 0) {
+    if (!check && bt_ign2->GetFrame(i)->func_name == cur_proc) {
       check = true;
     }
   }
 }
 
 void VerifyLevelIgnoreFrames(void*) {
-  backtrace_context_t all;
-  ASSERT_TRUE(backtrace_create_context(&all, BACKTRACE_CURRENT_PROCESS,
-                                       BACKTRACE_CURRENT_THREAD, 0));
-  ASSERT_TRUE(all.backtrace != NULL);
+  UniquePtr<Backtrace> all(
+      Backtrace::Create(BACKTRACE_CURRENT_PROCESS, BACKTRACE_CURRENT_THREAD));
+  ASSERT_TRUE(all.get() != NULL);
+  ASSERT_TRUE(all->Unwind(0));
 
-  backtrace_context_t ign1;
-  ASSERT_TRUE(backtrace_create_context(&ign1, BACKTRACE_CURRENT_PROCESS,
-                                       BACKTRACE_CURRENT_THREAD, 1));
-  ASSERT_TRUE(ign1.backtrace != NULL);
+  UniquePtr<Backtrace> ign1(
+      Backtrace::Create(BACKTRACE_CURRENT_PROCESS, BACKTRACE_CURRENT_THREAD));
+  ASSERT_TRUE(ign1.get() != NULL);
+  ASSERT_TRUE(ign1->Unwind(1));
 
-  backtrace_context_t ign2;
-  ASSERT_TRUE(backtrace_create_context(&ign2, BACKTRACE_CURRENT_PROCESS,
-                                       BACKTRACE_CURRENT_THREAD, 2));
-  ASSERT_TRUE(ign2.backtrace != NULL);
+  UniquePtr<Backtrace> ign2(
+      Backtrace::Create(BACKTRACE_CURRENT_PROCESS, BACKTRACE_CURRENT_THREAD));
+  ASSERT_TRUE(ign2.get() != NULL);
+  ASSERT_TRUE(ign2->Unwind(2));
 
-  VerifyIgnoreFrames(all.backtrace, ign1.backtrace, ign2.backtrace,
-                     "VerifyLevelIgnoreFrames");
-
-  backtrace_destroy_context(&all);
-  backtrace_destroy_context(&ign1);
-  backtrace_destroy_context(&ign2);
+  VerifyIgnoreFrames(all.get(), ign1.get(), ign2.get(), "VerifyLevelIgnoreFrames");
 }
 
 TEST(libbacktrace, local_trace_ignore_frames) {
@@ -264,9 +247,9 @@
   ASSERT_NE(test_recursive_call(MAX_BACKTRACE_FRAMES+10, VerifyMaxBacktrace, NULL), 0);
 }
 
-void VerifyProcTest(pid_t pid, pid_t tid,
-                    bool (*ReadyFunc)(const backtrace_t*),
-                    void (*VerifyFunc)(const backtrace_t*)) {
+void VerifyProcTest(pid_t pid, pid_t tid, bool share_map,
+                    bool (*ReadyFunc)(Backtrace*),
+                    void (*VerifyFunc)(Backtrace*)) {
   pid_t ptrace_tid;
   if (tid < 0) {
     ptrace_tid = pid;
@@ -281,13 +264,18 @@
       // Wait for the process to get to a stopping point.
       WaitForStop(ptrace_tid);
 
-      backtrace_context_t context;
-      ASSERT_TRUE(backtrace_create_context(&context, pid, tid, 0));
-      if (ReadyFunc(context.backtrace)) {
-        VerifyFunc(context.backtrace);
+      UniquePtr<BacktraceMap> map;
+      if (share_map) {
+        map.reset(BacktraceMap::Create(pid));
+      }
+      UniquePtr<Backtrace> backtrace(Backtrace::Create(pid, tid, map.get()));
+      ASSERT_TRUE(backtrace->Unwind(0));
+      ASSERT_TRUE(backtrace.get() != NULL);
+      if (ReadyFunc(backtrace.get())) {
+        VerifyFunc(backtrace.get());
         verified = true;
       }
-      backtrace_destroy_context(&context);
+
       ASSERT_TRUE(ptrace(PTRACE_DETACH, ptrace_tid, 0, 0) == 0);
     }
     // If 5 seconds have passed, then we are done.
@@ -301,7 +289,21 @@
     ASSERT_NE(test_level_one(1, 2, 3, 4, NULL, NULL), 0);
     exit(1);
   }
-  VerifyProcTest(pid, BACKTRACE_CURRENT_THREAD, ReadyLevelBacktrace, VerifyLevelDump);
+  VerifyProcTest(pid, BACKTRACE_CURRENT_THREAD, false, ReadyLevelBacktrace, VerifyLevelDump);
+
+  kill(pid, SIGKILL);
+  int status;
+  ASSERT_EQ(waitpid(pid, &status, 0), pid);
+}
+
+TEST(libbacktrace, ptrace_trace_shared_map) {
+  pid_t pid;
+  if ((pid = fork()) == 0) {
+    ASSERT_NE(test_level_one(1, 2, 3, 4, NULL, NULL), 0);
+    exit(1);
+  }
+
+  VerifyProcTest(pid, BACKTRACE_CURRENT_THREAD, true, ReadyLevelBacktrace, VerifyLevelDump);
 
   kill(pid, SIGKILL);
   int status;
@@ -314,28 +316,23 @@
     ASSERT_NE(test_recursive_call(MAX_BACKTRACE_FRAMES+10, NULL, NULL), 0);
     exit(1);
   }
-  VerifyProcTest(pid, BACKTRACE_CURRENT_THREAD, ReadyMaxBacktrace, VerifyMaxDump);
+  VerifyProcTest(pid, BACKTRACE_CURRENT_THREAD, false, ReadyMaxBacktrace, VerifyMaxDump);
 
   kill(pid, SIGKILL);
   int status;
   ASSERT_EQ(waitpid(pid, &status, 0), pid);
 }
 
-void VerifyProcessIgnoreFrames(const backtrace_t* bt_all) {
-  pid_t pid = bt_all->pid;
+void VerifyProcessIgnoreFrames(Backtrace* bt_all) {
+  UniquePtr<Backtrace> ign1(Backtrace::Create(bt_all->Pid(), BACKTRACE_CURRENT_THREAD));
+  ASSERT_TRUE(ign1.get() != NULL);
+  ASSERT_TRUE(ign1->Unwind(1));
 
-  backtrace_context_t ign1;
-  ASSERT_TRUE(backtrace_create_context(&ign1, pid, BACKTRACE_CURRENT_THREAD, 1));
-  ASSERT_TRUE(ign1.backtrace != NULL);
+  UniquePtr<Backtrace> ign2(Backtrace::Create(bt_all->Pid(), BACKTRACE_CURRENT_THREAD));
+  ASSERT_TRUE(ign2.get() != NULL);
+  ASSERT_TRUE(ign2->Unwind(2));
 
-  backtrace_context_t ign2;
-  ASSERT_TRUE(backtrace_create_context(&ign2, pid, BACKTRACE_CURRENT_THREAD, 2));
-  ASSERT_TRUE(ign2.backtrace != NULL);
-
-  VerifyIgnoreFrames(bt_all, ign1.backtrace, ign2.backtrace, NULL);
-
-  backtrace_destroy_context(&ign1);
-  backtrace_destroy_context(&ign2);
+  VerifyIgnoreFrames(bt_all, ign1.get(), ign2.get(), NULL);
 }
 
 TEST(libbacktrace, ptrace_ignore_frames) {
@@ -344,7 +341,7 @@
     ASSERT_NE(test_level_one(1, 2, 3, 4, NULL, NULL), 0);
     exit(1);
   }
-  VerifyProcTest(pid, BACKTRACE_CURRENT_THREAD, ReadyLevelBacktrace, VerifyProcessIgnoreFrames);
+  VerifyProcTest(pid, BACKTRACE_CURRENT_THREAD, false, ReadyLevelBacktrace, VerifyProcessIgnoreFrames);
 
   kill(pid, SIGKILL);
   int status;
@@ -408,7 +405,7 @@
     if (pid == *it) {
       continue;
     }
-    VerifyProcTest(pid, *it, ReadyLevelBacktrace, VerifyLevelDump);
+    VerifyProcTest(pid, *it, false, ReadyLevelBacktrace, VerifyLevelDump);
   }
   ASSERT_TRUE(ptrace(PTRACE_DETACH, pid, 0, 0) == 0);
 
@@ -418,13 +415,11 @@
 }
 
 void VerifyLevelThread(void*) {
-  backtrace_context_t context;
+  UniquePtr<Backtrace> backtrace(Backtrace::Create(getpid(), gettid()));
+  ASSERT_TRUE(backtrace.get() != NULL);
+  ASSERT_TRUE(backtrace->Unwind(0));
 
-  ASSERT_TRUE(backtrace_create_context(&context, getpid(), gettid(), 0));
-
-  VerifyLevelDump(context.backtrace);
-
-  backtrace_destroy_context(&context);
+  VerifyLevelDump(backtrace.get());
 }
 
 TEST(libbacktrace, thread_current_level) {
@@ -432,13 +427,11 @@
 }
 
 void VerifyMaxThread(void*) {
-  backtrace_context_t context;
+  UniquePtr<Backtrace> backtrace(Backtrace::Create(getpid(), gettid()));
+  ASSERT_TRUE(backtrace.get() != NULL);
+  ASSERT_TRUE(backtrace->Unwind(0));
 
-  ASSERT_TRUE(backtrace_create_context(&context, getpid(), gettid(), 0));
-
-  VerifyMaxDump(context.backtrace);
-
-  backtrace_destroy_context(&context);
+  VerifyMaxDump(backtrace.get());
 }
 
 TEST(libbacktrace, thread_current_max) {
@@ -469,13 +462,11 @@
   struct sigaction cur_action;
   ASSERT_TRUE(sigaction(SIGURG, NULL, &cur_action) == 0);
 
-  backtrace_context_t context;
+  UniquePtr<Backtrace> backtrace(Backtrace::Create(getpid(), thread_data.tid));
+  ASSERT_TRUE(backtrace.get() != NULL);
+  ASSERT_TRUE(backtrace->Unwind(0));
 
-  ASSERT_TRUE(backtrace_create_context(&context, getpid(), thread_data.tid,0));
-
-  VerifyLevelDump(context.backtrace);
-
-  backtrace_destroy_context(&context);
+  VerifyLevelDump(backtrace.get());
 
   // Tell the thread to exit its infinite loop.
   android_atomic_acquire_store(0, &thread_data.state);
@@ -499,20 +490,19 @@
   // Wait up to 2 seconds for the tid to be set.
   ASSERT_TRUE(WaitForNonZero(&thread_data.state, 2));
 
-  backtrace_context_t all;
-  ASSERT_TRUE(backtrace_create_context(&all, getpid(), thread_data.tid, 0));
+  UniquePtr<Backtrace> all(Backtrace::Create(getpid(), thread_data.tid));
+  ASSERT_TRUE(all.get() != NULL);
+  ASSERT_TRUE(all->Unwind(0));
 
-  backtrace_context_t ign1;
-  ASSERT_TRUE(backtrace_create_context(&ign1, getpid(), thread_data.tid, 1));
+  UniquePtr<Backtrace> ign1(Backtrace::Create(getpid(), thread_data.tid));
+  ASSERT_TRUE(ign1.get() != NULL);
+  ASSERT_TRUE(ign1->Unwind(1));
 
-  backtrace_context_t ign2;
-  ASSERT_TRUE(backtrace_create_context(&ign2, getpid(), thread_data.tid, 2));
+  UniquePtr<Backtrace> ign2(Backtrace::Create(getpid(), thread_data.tid));
+  ASSERT_TRUE(ign2.get() != NULL);
+  ASSERT_TRUE(ign2->Unwind(2));
 
-  VerifyIgnoreFrames(all.backtrace, ign1.backtrace, ign2.backtrace, NULL);
-
-  backtrace_destroy_context(&all);
-  backtrace_destroy_context(&ign1);
-  backtrace_destroy_context(&ign2);
+  VerifyIgnoreFrames(all.get(), ign1.get(), ign2.get(), NULL);
 
   // Tell the thread to exit its infinite loop.
   android_atomic_acquire_store(0, &thread_data.state);
@@ -538,13 +528,11 @@
   // Wait for the tid to be set.
   ASSERT_TRUE(WaitForNonZero(&thread_data.state, 2));
 
-  backtrace_context_t context;
+  UniquePtr<Backtrace> backtrace(Backtrace::Create(getpid(), thread_data.tid));
+  ASSERT_TRUE(backtrace.get() != NULL);
+  ASSERT_TRUE(backtrace->Unwind(0));
 
-  ASSERT_TRUE(backtrace_create_context(&context, getpid(), thread_data.tid, 0));
-
-  VerifyMaxDump(context.backtrace);
-
-  backtrace_destroy_context(&context);
+  VerifyMaxDump(backtrace.get());
 
   // Tell the thread to exit its infinite loop.
   android_atomic_acquire_store(0, &thread_data.state);
@@ -558,11 +546,9 @@
     }
   }
 
-  dump->context.data = NULL;
-  dump->context.backtrace = NULL;
-
   // The status of the actual unwind will be checked elsewhere.
-  backtrace_create_context(&dump->context, getpid(), dump->thread.tid, 0);
+  dump->backtrace = Backtrace::Create(getpid(), dump->thread.tid);
+  dump->backtrace->Unwind(0);
 
   android_atomic_acquire_store(1, &dump->done);
 
@@ -610,58 +596,100 @@
     // Tell the runner thread to exit its infinite loop.
     android_atomic_acquire_store(0, &runners[i].state);
 
-    ASSERT_TRUE(dumpers[i].context.backtrace != NULL);
-    VerifyMaxDump(dumpers[i].context.backtrace);
-    backtrace_destroy_context(&dumpers[i].context);
+    ASSERT_TRUE(dumpers[i].backtrace != NULL);
+    VerifyMaxDump(dumpers[i].backtrace);
+
+    delete dumpers[i].backtrace;
+    dumpers[i].backtrace = NULL;
   }
 }
 
+// This test is for UnwindMaps that should share the same map cursor when
+// multiple maps are created for the current process at the same time.
+TEST(libbacktrace, simultaneous_maps) {
+  BacktraceMap* map1 = BacktraceMap::Create(getpid());
+  BacktraceMap* map2 = BacktraceMap::Create(getpid());
+  BacktraceMap* map3 = BacktraceMap::Create(getpid());
+
+  Backtrace* back1 = Backtrace::Create(getpid(), BACKTRACE_CURRENT_THREAD, map1);
+  EXPECT_TRUE(back1->Unwind(0));
+  delete back1;
+  delete map1;
+
+  Backtrace* back2 = Backtrace::Create(getpid(), BACKTRACE_CURRENT_THREAD, map2);
+  EXPECT_TRUE(back2->Unwind(0));
+  delete back2;
+  delete map2;
+
+  Backtrace* back3 = Backtrace::Create(getpid(), BACKTRACE_CURRENT_THREAD, map3);
+  EXPECT_TRUE(back3->Unwind(0));
+  delete back3;
+  delete map3;
+}
+
 TEST(libbacktrace, format_test) {
-  backtrace_context_t context;
+  UniquePtr<Backtrace> backtrace(Backtrace::Create(getpid(), BACKTRACE_CURRENT_THREAD));
+  ASSERT_TRUE(backtrace.get() != NULL);
 
-  ASSERT_TRUE(backtrace_create_context(&context, BACKTRACE_CURRENT_PROCESS,
-                                       BACKTRACE_CURRENT_THREAD, 0));
-  ASSERT_TRUE(context.backtrace != NULL);
+  backtrace_frame_data_t frame;
+  frame.num = 1;
+  frame.pc = 2;
+  frame.sp = 0;
+  frame.stack_size = 0;
+  frame.map = NULL;
+  frame.func_offset = 0;
 
-  backtrace_frame_data_t* frame =
-      const_cast<backtrace_frame_data_t*>(&context.backtrace->frames[1]);
-  backtrace_frame_data_t save_frame = *frame;
+  backtrace_map_t map;
+  map.start = 0;
+  map.end = 0;
 
-  memset(frame, 0, sizeof(backtrace_frame_data_t));
-  char buf[512];
-  backtrace_format_frame_data(&context, 1, buf, sizeof(buf));
+  // Check no map set.
+  frame.num = 1;
 #if defined(__LP64__)
-  EXPECT_STREQ(buf, "#01 pc 0000000000000000  <unknown>");
+  EXPECT_EQ("#01 pc 0000000000000002  <unknown>",
 #else
-  EXPECT_STREQ(buf, "#01 pc 00000000  <unknown>");
+  EXPECT_EQ("#01 pc 00000002  <unknown>",
 #endif
+            backtrace->FormatFrameData(&frame));
 
-  frame->pc = 0x12345678;
-  frame->map_name = "MapFake";
-  backtrace_format_frame_data(&context, 1, buf, sizeof(buf));
+  // Check map name empty, but exists.
+  frame.map = &map;
+  map.start = 1;
 #if defined(__LP64__)
-  EXPECT_STREQ(buf, "#01 pc 0000000012345678  MapFake");
+  EXPECT_EQ("#01 pc 0000000000000001  <unknown>",
 #else
-  EXPECT_STREQ(buf, "#01 pc 12345678  MapFake");
+  EXPECT_EQ("#01 pc 00000001  <unknown>",
 #endif
+            backtrace->FormatFrameData(&frame));
 
-  frame->func_name = const_cast<char*>("ProcFake");
-  backtrace_format_frame_data(&context, 1, buf, sizeof(buf));
+
+  // Check relative pc is set and map name is set.
+  frame.pc = 0x12345679;
+  frame.map = &map;
+  map.name = "MapFake";
+  map.start =  1;
 #if defined(__LP64__)
-  EXPECT_STREQ(buf, "#01 pc 0000000012345678  MapFake (ProcFake)");
+  EXPECT_EQ("#01 pc 0000000012345678  MapFake",
 #else
-  EXPECT_STREQ(buf, "#01 pc 12345678  MapFake (ProcFake)");
+  EXPECT_EQ("#01 pc 12345678  MapFake",
 #endif
+            backtrace->FormatFrameData(&frame));
 
-  frame->func_offset = 645;
-  backtrace_format_frame_data(&context, 1, buf, sizeof(buf));
+  // Check func_name is set, but no func offset.
+  frame.func_name = "ProcFake";
 #if defined(__LP64__)
-  EXPECT_STREQ(buf, "#01 pc 0000000012345678  MapFake (ProcFake+645)");
+  EXPECT_EQ("#01 pc 0000000012345678  MapFake (ProcFake)",
 #else
-  EXPECT_STREQ(buf, "#01 pc 12345678  MapFake (ProcFake+645)");
+  EXPECT_EQ("#01 pc 12345678  MapFake (ProcFake)",
 #endif
+            backtrace->FormatFrameData(&frame));
 
-  *frame = save_frame;
-
-  backtrace_destroy_context(&context);
+  // Check func_name is set, and func offset is non-zero.
+  frame.func_offset = 645;
+#if defined(__LP64__)
+  EXPECT_EQ("#01 pc 0000000012345678  MapFake (ProcFake+645)",
+#else
+  EXPECT_EQ("#01 pc 12345678  MapFake (ProcFake+645)",
+#endif
+            backtrace->FormatFrameData(&frame));
 }
diff --git a/libcorkscrew/arch-arm/backtrace-arm.c b/libcorkscrew/arch-arm/backtrace-arm.c
index ff6c192..7bd0d8f 100644
--- a/libcorkscrew/arch-arm/backtrace-arm.c
+++ b/libcorkscrew/arch-arm/backtrace-arm.c
@@ -59,7 +59,7 @@
 #include <limits.h>
 #include <errno.h>
 #include <sys/ptrace.h>
-#include <sys/exec_elf.h>
+#include <elf.h>
 #include <cutils/log.h>
 
 #if !defined(__BIONIC_HAVE_UCONTEXT_T)
diff --git a/libcorkscrew/arch-arm/ptrace-arm.c b/libcorkscrew/arch-arm/ptrace-arm.c
index 78a9ea9..a50844e 100644
--- a/libcorkscrew/arch-arm/ptrace-arm.c
+++ b/libcorkscrew/arch-arm/ptrace-arm.c
@@ -19,7 +19,7 @@
 
 #include "../ptrace-arch.h"
 
-#include <sys/exec_elf.h>
+#include <elf.h>
 #include <cutils/log.h>
 
 #ifndef PT_ARM_EXIDX
diff --git a/libcutils/Android.mk b/libcutils/Android.mk
index 002b730..93bccb0 100644
--- a/libcutils/Android.mk
+++ b/libcutils/Android.mk
@@ -123,7 +123,7 @@
     endif # !x86
 endif # !arm
 
-LOCAL_C_INCLUDES := $(libcutils_c_includes) $(KERNEL_HEADERS)
+LOCAL_C_INCLUDES := $(libcutils_c_includes)
 LOCAL_STATIC_LIBRARIES := liblog
 LOCAL_CFLAGS += $(targetSmpFlag)
 include $(BUILD_STATIC_LIBRARY)
diff --git a/libcutils/debugger.c b/libcutils/debugger.c
index 9425006..7d907fc 100644
--- a/libcutils/debugger.c
+++ b/libcutils/debugger.c
@@ -30,6 +30,7 @@
     debugger_msg_t msg;
     msg.tid = tid;
     msg.action = DEBUGGER_ACTION_DUMP_TOMBSTONE;
+    msg.abort_msg_address = 0;
 
     int result = 0;
     if (TEMP_FAILURE_RETRY(write(s, &msg, sizeof(msg))) != sizeof(msg)) {
@@ -63,6 +64,7 @@
     debugger_msg_t msg;
     msg.tid = tid;
     msg.action = DEBUGGER_ACTION_DUMP_BACKTRACE;
+    msg.abort_msg_address = 0;
 
     int result = 0;
     if (TEMP_FAILURE_RETRY(write(s, &msg, sizeof(msg))) != sizeof(msg)) {
diff --git a/libcutils/iosched_policy.c b/libcutils/iosched_policy.c
index f350f58..5d90a01 100644
--- a/libcutils/iosched_policy.c
+++ b/libcutils/iosched_policy.c
@@ -1,7 +1,6 @@
-
-/* libs/cutils/iosched_policy.c
+/*
 **
-** Copyright 2007, The Android Open Source Project
+** Copyright 2007-2014, The Android Open Source Project
 **
 ** Licensed under the Apache License, Version 2.0 (the "License"); 
 ** you may not use this file except in compliance with the License. 
@@ -27,7 +26,11 @@
 
 #include <cutils/iosched_policy.h>
 
+#ifdef HAVE_ANDROID_OS
+/* #include <linux/ioprio.h> */
 extern int ioprio_set(int which, int who, int ioprio);
+extern int ioprio_get(int which, int who);
+#endif
 
 enum {
     WHO_PROCESS = 1,
diff --git a/libdiskconfig/diskconfig.c b/libdiskconfig/diskconfig.c
index d5425de..6fd81b7 100644
--- a/libdiskconfig/diskconfig.c
+++ b/libdiskconfig/diskconfig.c
@@ -19,6 +19,7 @@
 
 #include <errno.h>
 #include <fcntl.h>
+#include <inttypes.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
@@ -80,7 +81,7 @@
         *plen *= multiple;
 
         if (*plen > 0xffffffffULL) {
-            ALOGE("Length specified is too large!: %llu KB", *plen);
+            ALOGE("Length specified is too large!: %"PRIu64" KB", *plen);
             return 1;
         }
     }
@@ -371,8 +372,8 @@
 
     /* only matters for disks, not files */
     if (S_ISBLK(stat.st_mode) && total_size > disk_size) {
-        ALOGE("Total requested size of partitions (%llu) is greater than disk "
-             "size (%llu).", total_size, disk_size);
+        ALOGE("Total requested size of partitions (%"PRIu64") is greater than disk "
+             "size (%"PRIu64").", total_size, disk_size);
         goto fail;
     }
 
diff --git a/libion/ion_test.c b/libion/ion_test.c
index 12163e9..8872282 100644
--- a/libion/ion_test.c
+++ b/libion/ion_test.c
@@ -63,7 +63,7 @@
 
     ret = ion_free(fd, handle);
     if (ret) {
-        printf("%s failed: %s %p\n", __func__, strerror(ret), handle);
+        printf("%s failed: %s %d\n", __func__, strerror(ret), handle);
         return;
     }
     ion_close(fd);
diff --git a/liblog/Android.mk b/liblog/Android.mk
index 78ff1ed..0d6c970 100644
--- a/liblog/Android.mk
+++ b/liblog/Android.mk
@@ -1,5 +1,5 @@
 #
-# Copyright (C) 2008 The Android Open Source Project
+# Copyright (C) 2008-2014 The Android Open Source Project
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -67,7 +67,6 @@
 LOCAL_CFLAGS := -DFAKE_LOG_DEVICE=1 -m64
 include $(BUILD_HOST_STATIC_LIBRARY)
 
-
 # Shared and static library for target
 # ========================================================
 include $(CLEAR_VARS)
@@ -79,3 +78,5 @@
 LOCAL_MODULE := liblog
 LOCAL_WHOLE_STATIC_LIBRARIES := liblog
 include $(BUILD_SHARED_LIBRARY)
+
+include $(call first-makefiles-under,$(LOCAL_PATH))
diff --git a/liblog/NOTICE b/liblog/NOTICE
index c5b1efa..06a9081 100644
--- a/liblog/NOTICE
+++ b/liblog/NOTICE
@@ -1,5 +1,5 @@
 
-   Copyright (c) 2005-2008, The Android Open Source Project
+   Copyright (c) 2005-2014, The Android Open Source Project
 
    Licensed under the Apache License, Version 2.0 (the "License");
    you may not use this file except in compliance with the License.
diff --git a/liblog/README b/liblog/README
new file mode 100644
index 0000000..d7472e4
--- /dev/null
+++ b/liblog/README
@@ -0,0 +1,134 @@
+LIBLOG(3)               Android NDK Programming Manual               LIBLOG(3)
+
+
+
+NAME
+       liblog - Android NDK logger interfaces
+
+SYNOPSIS
+       #include <log/log.h>
+
+       ALOG(android_priority, tag, format, ...)
+       IF_ALOG(android_priority, tag)
+       LOG_PRI(priority, tag, format, ...)
+       LOG_PRI_VA(priority, tag, format, args)
+       #define LOG_TAG NULL
+       ALOGV(format, ...)
+       SLOGV(format, ...)
+       RLOGV(format, ...)
+       ALOGV_IF(cond, format, ...)
+       SLOGV_IF(cond, format, ...)
+       RLOGV_IF(cond, format, ...)
+       IF_ALOGC()
+       ALOGD(format, ...)
+       SLOGD(format, ...)
+       RLOGD(format, ...)
+       ALOGD_IF(cond, format, ...)
+       SLOGD_IF(cond, format, ...)
+       RLOGD_IF(cond, format, ...)
+       IF_ALOGD()
+       ALOGI(format, ...)
+       SLOGI(format, ...)
+       RLOGI(format, ...)
+       ALOGI_IF(cond, format, ...)
+       SLOGI_IF(cond, format, ...)
+       RLOGI_IF(cond, format, ...)
+       IF_ALOGI()
+       ALOGW(format, ...)
+       SLOGW(format, ...)
+       RLOGW(format, ...)
+       ALOGW_IF(cond, format, ...)
+       SLOGW_IF(cond, format, ...)
+       RLOGW_IF(cond, format, ...)
+       IF_ALOGW()
+       ALOGE(format, ...)
+       SLOGE(format, ...)
+       RLOGE(format, ...)
+       ALOGE_IF(cond, format, ...)
+       SLOGE_IF(cond, format, ...)
+       RLOGE_IF(cond, format, ...)
+       IF_ALOGE()
+       LOG_FATAL(format, ...)
+       LOG_ALWAYS_FATAL(format, ...)
+       LOG_FATAL_IF(cond, format, ...)
+       LOG_ALWAYS_FATAL_IF(cond, format, ...)
+       ALOG_ASSERT(cond, format, ...)
+       LOG_EVENT_INT(tag, value)
+       LOG_EVENT_LONG(tag, value)
+
+       Link with -llog
+
+       #include <log/logger.h>
+
+       log_id_t android_logger_get_id(struct logger *logger)
+       int android_logger_clear(struct logger *logger)
+       int android_logger_get_log_size(struct logger *logger)
+       int android_logger_get_log_readable_size(struct logger *logger)
+       int android_logger_get_log_version(struct logger *logger)
+
+       struct  logger_list  *android_logger_list_alloc(int  mode, unsigned int
+       tail, pid_t pid)
+       struct  logger  *android_logger_open(struct  logger_list  *logger_list,
+       log_id_t id)
+       struct  logger_list  *android_logger_list_open(log_id_t  id,  int mode,
+       unsigned int tail, pid_t pid)
+
+       int android_logger_list_read(struct  logger_list  *logger_list,  struct
+       log_msg *log_msg
+
+       void android_logger_list_free(struct logger_list *logger_list)
+
+       log_id_t android_name_to_log_id(const char *logName)
+       const char *android_log_id_to_name(log_id_t log_id)
+
+       Link with -llog
+
+DESCRIPTION
+       liblog  represents  an interface to the volatile Android Logging system
+       for NDK (Native) applications  and  libraries.  Interfaces  for  either
+       writing  or reading logs.  The log buffers are divided up in Main, Sys‐
+       tem, Radio and Events sub-logs.
+
+       The logging interfaces are a series of macros,  all  of  which  can  be
+       overridden individually in order to control the verbosity of the appli‐
+       cation or library.  [ASR]LOG[VDIWE] calls are used  to  log  to  BAsic,
+       System or Radio sub-logs in either the Verbose, Debug, Info, Warning or
+       Error priorities.  [ASR]LOG[VDIWE]_IF calls are used  to  perform  thus
+       based  on a condition being true.  IF_ALOG[VDIWE] calls are true if the
+       current LOG_TAG is enabled at the specified priority.  LOG_ALWAYS_FATAL
+       is  used to ALOG a message, then kill the process.  LOG_FATAL call is a
+       variant of LOG_ALWAYS_FATAL,  only  enabled  in  engineering,  and  not
+       release builds.  ALOG_ASSERT is used to ALOG a message if the condition
+       is  false;   the   condition   is   part   of   the   logged   message.
+       LOG_EVENT_(INT|LONG)  is  used  to  drop binary content into the Events
+       sub-log.
+
+       The log reading interfaces permit opening the  logs  either  singly  or
+       multiply,  retrieving  a  log  entry  at  a  time in time sorted order,
+       optionally limited to a specific pid and tail of the log(s) and finally
+       a  call closing the logs.  A single log can be opened with android_log‐
+       ger_list_open;  or  multiple  logs  can  be  opened  with  android_log‐
+       ger_list_alloc,  calling  in  turn the android_logger_open for each log
+       id.  Each entry can be retrieved  with  android_logger_list_read.   The
+       log(s) can be closed with android_logger_list_free.  The logs should be
+       opened with an O_RDONLY mode.  O_NDELAY mode will report when  the  log
+       reading  is  done  with  an  EAGAIN  error  return  code, otherwise the
+       android_logger_list_read call will block for new entries.
+
+       The value returned by android_logger_open can be used as a parameter to
+       the  android_logger_clear  function to empty the sub-log.  It is recom‐
+       mended to only open log O_WRONLY.
+
+       The value returned by android_logger_open can be used as a parameter to
+       the android_logger_get_log_(size|readable_size|version) to retrieve the
+       sub-log maximum size, readable size and log buffer format protocol ver‐
+       sion  respectively.  android_logger_get_id returns the id that was used
+       when opening the sub-log.  It is recommended to open the  log  O_RDONLY
+       in these cases.
+
+SEE ALSO
+       syslogd(8)
+
+
+
+                                  17 Dec 2013                        LIBLOG(3)
diff --git a/liblog/fake_log_device.c b/liblog/fake_log_device.c
index be34f01..da83a85 100644
--- a/liblog/fake_log_device.c
+++ b/liblog/fake_log_device.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2008 The Android Open Source Project
+ * Copyright (C) 2008-2014 The Android Open Source Project
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -322,11 +322,11 @@
  * Make up something to replace it.
  */
 static ssize_t fake_writev(int fd, const struct iovec *iov, int iovcnt) {
-    int result = 0;
-    struct iovec* end = iov + iovcnt;
+    ssize_t result = 0;
+    const struct iovec* end = iov + iovcnt;
     for (; iov < end; iov++) {
-        int w = write(fd, iov->iov_base, iov->iov_len);
-        if (w != iov->iov_len) {
+        ssize_t w = write(fd, iov->iov_base, iov->iov_len);
+        if (w != (ssize_t) iov->iov_len) {
             if (w < 0)
                 return w;
             return result + w;
diff --git a/liblog/log_read.c b/liblog/log_read.c
index 379105f..47aa711 100644
--- a/liblog/log_read.c
+++ b/liblog/log_read.c
@@ -25,6 +25,17 @@
 #include <log/log.h>
 #include <log/logger.h>
 
+#include <sys/ioctl.h>
+
+#define __LOGGERIO     0xAE
+
+#define LOGGER_GET_LOG_BUF_SIZE    _IO(__LOGGERIO, 1) /* size of log */
+#define LOGGER_GET_LOG_LEN         _IO(__LOGGERIO, 2) /* used log len */
+#define LOGGER_GET_NEXT_ENTRY_LEN  _IO(__LOGGERIO, 3) /* next entry len */
+#define LOGGER_FLUSH_LOG           _IO(__LOGGERIO, 4) /* flush log */
+#define LOGGER_GET_VERSION         _IO(__LOGGERIO, 5) /* abi version */
+#define LOGGER_SET_VERSION         _IO(__LOGGERIO, 6) /* abi version */
+
 typedef char bool;
 #define false (const bool)0
 #define true (const bool)1
diff --git a/liblog/logd_write.c b/liblog/logd_write.c
index 6ae339f..5766f8c 100644
--- a/liblog/logd_write.c
+++ b/liblog/logd_write.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2007 The Android Open Source Project
+ * Copyright (C) 2007-2014 The Android Open Source Project
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -31,6 +31,11 @@
 #include <log/logd.h>
 #include <log/log.h>
 
+#define LOGGER_LOG_MAIN		"log/main"
+#define LOGGER_LOG_RADIO	"log/radio"
+#define LOGGER_LOG_EVENTS	"log/events"
+#define LOGGER_LOG_SYSTEM	"log/system"
+
 #define LOG_BUF_SIZE 1024
 
 #if FAKE_LOG_DEVICE
@@ -75,8 +80,8 @@
     return (g_log_status == kLogAvailable);
 }
 
-static int __write_to_log_null(UNUSED log_id_t log_fd, UNUSED struct iovec *vec,
-        UNUSED size_t nr)
+static int __write_to_log_null(log_id_t log_fd UNUSED, struct iovec *vec UNUSED,
+        size_t nr UNUSED)
 {
     return -1;
 }
diff --git a/liblog/logprint.c b/liblog/logprint.c
index 3927c22..a7480d5 100644
--- a/liblog/logprint.c
+++ b/liblog/logprint.c
@@ -1,6 +1,6 @@
 /*
 **
-** Copyright 2006, The Android Open Source Project
+** Copyright 2006-2014, The Android Open Source Project
 **
 ** Licensed under the Apache License, Version 2.0 (the "License");
 ** you may not use this file except in compliance with the License.
@@ -377,8 +377,13 @@
     int msgEnd = -1;
 
     int i;
+    char *msg = buf->msg;
+    struct logger_entry_v2 *buf2 = (struct logger_entry_v2 *)buf;
+    if (buf2->hdr_size) {
+        msg = ((char *)buf2) + buf2->hdr_size;
+    }
     for (i = 1; i < buf->len; i++) {
-        if (buf->msg[i] == '\0') {
+        if (msg[i] == '\0') {
             if (msgStart == -1) {
                 msgStart = i + 1;
             } else {
@@ -395,12 +400,12 @@
     if (msgEnd == -1) {
         // incoming message not null-terminated; force it
         msgEnd = buf->len - 1;
-        buf->msg[msgEnd] = '\0';
+        msg[msgEnd] = '\0';
     }
 
-    entry->priority = buf->msg[0];
-    entry->tag = buf->msg + 1;
-    entry->message = buf->msg + msgStart;
+    entry->priority = msg[0];
+    entry->tag = msg + 1;
+    entry->message = msg + msgStart;
     entry->messageLen = msgEnd - msgStart;
 
     return 0;
@@ -614,6 +619,10 @@
      * Pull the tag out.
      */
     eventData = (const unsigned char*) buf->msg;
+    struct logger_entry_v2 *buf2 = (struct logger_entry_v2 *)buf;
+    if (buf2->hdr_size) {
+        eventData = ((unsigned char *)buf2) + buf2->hdr_size;
+    }
     inCount = buf->len;
     if (inCount < 4)
         return -1;
diff --git a/liblog/tests/Android.mk b/liblog/tests/Android.mk
new file mode 100644
index 0000000..db06cf7
--- /dev/null
+++ b/liblog/tests/Android.mk
@@ -0,0 +1,77 @@
+#
+# Copyright (C) 2013-2014 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+LOCAL_PATH := $(call my-dir)
+
+# -----------------------------------------------------------------------------
+# Benchmarks.
+# -----------------------------------------------------------------------------
+
+test_module_prefix := liblog-
+test_tags := tests
+
+benchmark_c_flags := \
+    -Ibionic/tests \
+    -Wall -Wextra \
+    -Werror \
+    -fno-builtin \
+    -std=gnu++11
+
+benchmark_src_files := \
+    benchmark_main.cpp \
+    liblog_benchmark.cpp \
+
+# Build benchmarks for the device. Run with:
+#   adb shell liblog-benchmarks
+include $(CLEAR_VARS)
+LOCAL_MODULE := $(test_module_prefix)benchmarks
+LOCAL_MODULE_TAGS := $(test_tags)
+LOCAL_ADDITIONAL_DEPENDENCIES := $(LOCAL_PATH)/Android.mk
+LOCAL_CFLAGS += $(benchmark_c_flags)
+LOCAL_SHARED_LIBRARIES += liblog libm
+LOCAL_SRC_FILES := $(benchmark_src_files)
+ifndef LOCAL_SDK_VERSION
+LOCAL_C_INCLUDES += bionic bionic/libstdc++/include external/stlport/stlport
+LOCAL_SHARED_LIBRARIES += libstlport
+endif
+LOCAL_MODULE_PATH := $(TARGET_OUT_DATA_NATIVE_TESTS)/$(LOCAL_MODULE)
+include $(BUILD_EXECUTABLE)
+
+# -----------------------------------------------------------------------------
+# Unit tests.
+# -----------------------------------------------------------------------------
+
+test_c_flags := \
+    -fstack-protector-all \
+    -g \
+    -Wall -Wextra \
+    -Werror \
+    -fno-builtin \
+
+test_src_files := \
+    liblog_test.cpp \
+
+# Build tests for the device (with .so). Run with:
+#   adb shell /data/nativetest/liblog-unit-tests/liblog-unit-tests
+include $(CLEAR_VARS)
+LOCAL_MODULE := $(test_module_prefix)unit-tests
+LOCAL_MODULE_TAGS := $(test_tags)
+LOCAL_ADDITIONAL_DEPENDENCIES := $(LOCAL_PATH)/Android.mk
+LOCAL_CFLAGS += $(test_c_flags)
+LOCAL_LDLIBS := -lpthread
+LOCAL_SHARED_LIBRARIES := liblog
+LOCAL_SRC_FILES := $(test_src_files)
+include $(BUILD_NATIVE_TEST)
diff --git a/liblog/tests/benchmark.h b/liblog/tests/benchmark.h
new file mode 100644
index 0000000..7f96e6d
--- /dev/null
+++ b/liblog/tests/benchmark.h
@@ -0,0 +1,147 @@
+/*
+ * Copyright (C) 2012-2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <vector>
+
+#ifndef BIONIC_BENCHMARK_H_
+#define BIONIC_BENCHMARK_H_
+
+namespace testing {
+
+class Benchmark;
+template <typename T> class BenchmarkWantsArg;
+template <typename T> class BenchmarkWithArg;
+
+void BenchmarkRegister(Benchmark* bm);
+int PrettyPrintInt(char* str, int len, unsigned int arg);
+
+class Benchmark {
+ public:
+  Benchmark(const char* name, void (*fn)(int)) : name_(strdup(name)), fn_(fn) {
+    BenchmarkRegister(this);
+  }
+  Benchmark(const char* name) : name_(strdup(name)), fn_(NULL) {}
+
+  virtual ~Benchmark() {
+    free(name_);
+  }
+
+  const char* Name() { return name_; }
+  virtual const char* ArgName() { return NULL; }
+  virtual void RunFn(int iterations) { fn_(iterations); }
+
+ protected:
+  char* name_;
+
+ private:
+  void (*fn_)(int);
+};
+
+template <typename T>
+class BenchmarkWantsArgBase : public Benchmark {
+ public:
+  BenchmarkWantsArgBase(const char* name, void (*fn)(int, T)) : Benchmark(name) {
+    fn_arg_ = fn;
+  }
+
+  BenchmarkWantsArgBase<T>* Arg(const char* arg_name, T arg) {
+    BenchmarkRegister(new BenchmarkWithArg<T>(name_, fn_arg_, arg_name, arg));
+    return this;
+  }
+
+ protected:
+  virtual void RunFn(int) { printf("can't run arg benchmark %s without arg\n", Name()); }
+  void (*fn_arg_)(int, T);
+};
+
+template <typename T>
+class BenchmarkWithArg : public BenchmarkWantsArg<T> {
+ public:
+  BenchmarkWithArg(const char* name, void (*fn)(int, T), const char* arg_name, T arg) :
+      BenchmarkWantsArg<T>(name, fn), arg_(arg) {
+    arg_name_ = strdup(arg_name);
+  }
+
+  virtual ~BenchmarkWithArg() {
+    free(arg_name_);
+  }
+
+  virtual const char* ArgName() { return arg_name_; }
+
+ protected:
+  virtual void RunFn(int iterations) { BenchmarkWantsArg<T>::fn_arg_(iterations, arg_); }
+
+ private:
+  T arg_;
+  char* arg_name_;
+};
+
+template <typename T>
+class BenchmarkWantsArg : public BenchmarkWantsArgBase<T> {
+ public:
+  BenchmarkWantsArg<T>(const char* name, void (*fn)(int, T)) :
+    BenchmarkWantsArgBase<T>(name, fn) { }
+};
+
+template <>
+class BenchmarkWantsArg<int> : public BenchmarkWantsArgBase<int> {
+ public:
+  BenchmarkWantsArg<int>(const char* name, void (*fn)(int, int)) :
+    BenchmarkWantsArgBase<int>(name, fn) { }
+
+  BenchmarkWantsArg<int>* Arg(int arg) {
+    char arg_name[100];
+    PrettyPrintInt(arg_name, sizeof(arg_name), arg);
+    BenchmarkRegister(new BenchmarkWithArg<int>(name_, fn_arg_, arg_name, arg));
+    return this;
+  }
+};
+
+static inline Benchmark* BenchmarkFactory(const char* name, void (*fn)(int)) {
+  return new Benchmark(name, fn);
+}
+
+template <typename T>
+static inline BenchmarkWantsArg<T>* BenchmarkFactory(const char* name, void (*fn)(int, T)) {
+  return new BenchmarkWantsArg<T>(name, fn);
+}
+
+}  // namespace testing
+
+template <typename T>
+static inline void BenchmarkAddArg(::testing::Benchmark* b, const char* name, T arg) {
+  ::testing::BenchmarkWantsArg<T>* ba;
+  ba = static_cast< ::testing::BenchmarkWantsArg<T>* >(b);
+  ba->Arg(name, arg);
+}
+
+void SetBenchmarkBytesProcessed(uint64_t);
+void ResetBenchmarkTiming(void);
+void StopBenchmarkTiming(void);
+void StartBenchmarkTiming(void);
+void StartBenchmarkTiming(uint64_t);
+void StopBenchmarkTiming(uint64_t);
+
+#define BENCHMARK(f) \
+    static ::testing::Benchmark* _benchmark_##f __attribute__((unused)) = \
+        (::testing::Benchmark*)::testing::BenchmarkFactory(#f, f)
+
+#endif // BIONIC_BENCHMARK_H_
diff --git a/liblog/tests/benchmark_main.cpp b/liblog/tests/benchmark_main.cpp
new file mode 100644
index 0000000..02df460
--- /dev/null
+++ b/liblog/tests/benchmark_main.cpp
@@ -0,0 +1,245 @@
+/*
+ * Copyright (C) 2012-2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <benchmark.h>
+
+#include <regex.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#include <string>
+#include <map>
+#include <vector>
+
+static uint64_t gBytesProcessed;
+static uint64_t gBenchmarkTotalTimeNs;
+static uint64_t gBenchmarkTotalTimeNsSquared;
+static uint64_t gBenchmarkNum;
+static uint64_t gBenchmarkStartTimeNs;
+
+typedef std::vector< ::testing::Benchmark* > BenchmarkList;
+static BenchmarkList* gBenchmarks;
+
+static int Round(int n) {
+  int base = 1;
+  while (base*10 < n) {
+    base *= 10;
+  }
+  if (n < 2*base) {
+    return 2*base;
+  }
+  if (n < 5*base) {
+    return 5*base;
+  }
+  return 10*base;
+}
+
+static uint64_t NanoTime() {
+  struct timespec t;
+  t.tv_sec = t.tv_nsec = 0;
+  clock_gettime(CLOCK_MONOTONIC, &t);
+  return static_cast<uint64_t>(t.tv_sec) * 1000000000ULL + t.tv_nsec;
+}
+
+namespace testing {
+
+int PrettyPrintInt(char* str, int len, unsigned int arg)
+{
+  if (arg >= (1<<30) && arg % (1<<30) == 0) {
+    return snprintf(str, len, "%uGi", arg/(1<<30));
+  } else if (arg >= (1<<20) && arg % (1<<20) == 0) {
+    return snprintf(str, len, "%uMi", arg/(1<<20));
+  } else if (arg >= (1<<10) && arg % (1<<10) == 0) {
+    return snprintf(str, len, "%uKi", arg/(1<<10));
+  } else if (arg >= 1000000000 && arg % 1000000000 == 0) {
+    return snprintf(str, len, "%uG", arg/1000000000);
+  } else if (arg >= 1000000 && arg % 1000000 == 0) {
+    return snprintf(str, len, "%uM", arg/1000000);
+  } else if (arg >= 1000 && arg % 1000 == 0) {
+    return snprintf(str, len, "%uK", arg/1000);
+  } else {
+    return snprintf(str, len, "%u", arg);
+  }
+}
+
+bool ShouldRun(Benchmark* b, int argc, char* argv[]) {
+  if (argc == 1) {
+    return true;  // With no arguments, we run all benchmarks.
+  }
+  // Otherwise, we interpret each argument as a regular expression and
+  // see if any of our benchmarks match.
+  for (int i = 1; i < argc; i++) {
+    regex_t re;
+    if (regcomp(&re, argv[i], 0) != 0) {
+      fprintf(stderr, "couldn't compile \"%s\" as a regular expression!\n", argv[i]);
+      exit(EXIT_FAILURE);
+    }
+    int match = regexec(&re, b->Name(), 0, NULL, 0);
+    regfree(&re);
+    if (match != REG_NOMATCH) {
+      return true;
+    }
+  }
+  return false;
+}
+
+void BenchmarkRegister(Benchmark* b) {
+  if (gBenchmarks == NULL) {
+    gBenchmarks = new BenchmarkList;
+  }
+  gBenchmarks->push_back(b);
+}
+
+void RunRepeatedly(Benchmark* b, int iterations) {
+  gBytesProcessed = 0;
+  ResetBenchmarkTiming();
+  uint64_t StartTimeNs = NanoTime();
+  b->RunFn(iterations);
+  // Catch us if we fail to log anything.
+  if ((gBenchmarkTotalTimeNs == 0)
+   && (StartTimeNs != 0)
+   && (gBenchmarkStartTimeNs == 0)) {
+    gBenchmarkTotalTimeNs = NanoTime() - StartTimeNs;
+  }
+}
+
+void Run(Benchmark* b) {
+  // run once in case it's expensive
+  unsigned iterations = 1;
+  uint64_t s = NanoTime();
+  RunRepeatedly(b, iterations);
+  s = NanoTime() - s;
+  while (s < 2e9 && gBenchmarkTotalTimeNs < 1e9 && iterations < 1e9) {
+    unsigned last = iterations;
+    if (gBenchmarkTotalTimeNs/iterations == 0) {
+      iterations = 1e9;
+    } else {
+      iterations = 1e9 / (gBenchmarkTotalTimeNs/iterations);
+    }
+    iterations = std::max(last + 1, std::min(iterations + iterations/2, 100*last));
+    iterations = Round(iterations);
+    s = NanoTime();
+    RunRepeatedly(b, iterations);
+    s = NanoTime() - s;
+  }
+
+  char throughput[100];
+  throughput[0] = '\0';
+  if (gBenchmarkTotalTimeNs > 0 && gBytesProcessed > 0) {
+    double mib_processed = static_cast<double>(gBytesProcessed)/1e6;
+    double seconds = static_cast<double>(gBenchmarkTotalTimeNs)/1e9;
+    snprintf(throughput, sizeof(throughput), " %8.2f MiB/s", mib_processed/seconds);
+  }
+
+  char full_name[100];
+  snprintf(full_name, sizeof(full_name), "%s%s%s", b->Name(),
+           b->ArgName() ? "/" : "",
+           b->ArgName() ? b->ArgName() : "");
+
+  uint64_t mean = gBenchmarkTotalTimeNs / iterations;
+  uint64_t sdev = 0;
+  if (gBenchmarkNum == iterations) {
+    mean = gBenchmarkTotalTimeNs / gBenchmarkNum;
+    uint64_t nXvariance = gBenchmarkTotalTimeNsSquared * gBenchmarkNum
+                        - (gBenchmarkTotalTimeNs * gBenchmarkTotalTimeNs);
+    sdev = (sqrt((double)nXvariance) / gBenchmarkNum / gBenchmarkNum) + 0.5;
+  }
+  if (mean > (10000 * sdev)) {
+    printf("%-25s %10llu %10llu%s\n", full_name,
+            static_cast<uint64_t>(iterations), mean, throughput);
+  } else {
+    printf("%-25s %10llu %10llu(\317\203%llu)%s\n", full_name,
+           static_cast<uint64_t>(iterations), mean, sdev, throughput);
+  }
+  fflush(stdout);
+}
+
+}  // namespace testing
+
+void SetBenchmarkBytesProcessed(uint64_t x) {
+  gBytesProcessed = x;
+}
+
+void ResetBenchmarkTiming() {
+  gBenchmarkStartTimeNs = 0;
+  gBenchmarkTotalTimeNs = 0;
+  gBenchmarkTotalTimeNsSquared = 0;
+  gBenchmarkNum = 0;
+}
+
+void StopBenchmarkTiming(void) {
+  if (gBenchmarkStartTimeNs != 0) {
+    int64_t diff = NanoTime() - gBenchmarkStartTimeNs;
+    gBenchmarkTotalTimeNs += diff;
+    gBenchmarkTotalTimeNsSquared += diff * diff;
+    ++gBenchmarkNum;
+  }
+  gBenchmarkStartTimeNs = 0;
+}
+
+void StartBenchmarkTiming(void) {
+  if (gBenchmarkStartTimeNs == 0) {
+    gBenchmarkStartTimeNs = NanoTime();
+  }
+}
+
+void StopBenchmarkTiming(uint64_t NanoTime) {
+  if (gBenchmarkStartTimeNs != 0) {
+    int64_t diff = NanoTime - gBenchmarkStartTimeNs;
+    gBenchmarkTotalTimeNs += diff;
+    gBenchmarkTotalTimeNsSquared += diff * diff;
+    if (NanoTime != 0) {
+      ++gBenchmarkNum;
+    }
+  }
+  gBenchmarkStartTimeNs = 0;
+}
+
+void StartBenchmarkTiming(uint64_t NanoTime) {
+  if (gBenchmarkStartTimeNs == 0) {
+    gBenchmarkStartTimeNs = NanoTime;
+  }
+}
+
+int main(int argc, char* argv[]) {
+  if (gBenchmarks->empty()) {
+    fprintf(stderr, "No benchmarks registered!\n");
+    exit(EXIT_FAILURE);
+  }
+
+  bool need_header = true;
+  for (auto b : *gBenchmarks) {
+    if (ShouldRun(b, argc, argv)) {
+      if (need_header) {
+        printf("%-25s %10s %10s\n", "", "iterations", "ns/op");
+        fflush(stdout);
+        need_header = false;
+      }
+      Run(b);
+    }
+  }
+
+  if (need_header) {
+    fprintf(stderr, "No matching benchmarks!\n");
+    fprintf(stderr, "Available benchmarks:\n");
+    for (auto b : *gBenchmarks) {
+      fprintf(stderr, "  %s\n", b->Name());
+    }
+    exit(EXIT_FAILURE);
+  }
+
+  return 0;
+}
diff --git a/liblog/tests/liblog_benchmark.cpp b/liblog/tests/liblog_benchmark.cpp
new file mode 100644
index 0000000..19406fb
--- /dev/null
+++ b/liblog/tests/liblog_benchmark.cpp
@@ -0,0 +1,268 @@
+/*
+ * Copyright (C) 2013-2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <sys/socket.h>
+#include <cutils/sockets.h>
+#include <log/log.h>
+#include <log/logger.h>
+#include <log/log_read.h>
+
+#include "benchmark.h"
+
+// enhanced version of LOG_FAILURE_RETRY to add support for EAGAIN and
+// non-syscall libs. Since we are benchmarking, or using this in the emergency
+// signal to stuff a terminating code, we do NOT want to introduce
+// a syscall or usleep on EAGAIN retry.
+#define LOG_FAILURE_RETRY(exp) ({  \
+    typeof (exp) _rc;              \
+    do {                           \
+        _rc = (exp);               \
+    } while (((_rc == -1)          \
+           && ((errno == EINTR)    \
+            || (errno == EAGAIN))) \
+          || (_rc == -EINTR)       \
+          || (_rc == -EAGAIN));    \
+    _rc; })
+
+/*
+ *	Measure the fastest rate we can reliabley stuff print messages into
+ * the log at high pressure. Expect this to be less than double the process
+ * wakeup time (2ms?)
+ */
+static void BM_log_maximum_retry(int iters) {
+    StartBenchmarkTiming();
+
+    for (int i = 0; i < iters; ++i) {
+        LOG_FAILURE_RETRY(
+            __android_log_print(ANDROID_LOG_INFO,
+                                "BM_log_maximum_retry", "%d", i));
+    }
+
+    StopBenchmarkTiming();
+}
+BENCHMARK(BM_log_maximum_retry);
+
+/*
+ *	Measure the fastest rate we can stuff print messages into the log
+ * at high pressure. Expect this to be less than double the process wakeup
+ * time (2ms?)
+ */
+static void BM_log_maximum(int iters) {
+    StartBenchmarkTiming();
+
+    for (int i = 0; i < iters; ++i) {
+        __android_log_print(ANDROID_LOG_INFO, "BM_log_maximum", "%d", i);
+    }
+
+    StopBenchmarkTiming();
+}
+BENCHMARK(BM_log_maximum);
+
+/*
+ *	Measure the time it takes to submit the android logging call using
+ * discrete acquisition under light load. Expect this to be a pair of
+ * syscall periods (2us).
+ */
+static void BM_clock_overhead(int iters) {
+    for (int i = 0; i < iters; ++i) {
+       StartBenchmarkTiming();
+       StopBenchmarkTiming();
+    }
+}
+BENCHMARK(BM_clock_overhead);
+
+/*
+ *	Measure the time it takes to submit the android logging call using
+ * discrete acquisition under light load. Expect this to be a dozen or so
+ * syscall periods (40us).
+ */
+static void BM_log_overhead(int iters) {
+    for (int i = 0; i < iters; ++i) {
+       StartBenchmarkTiming();
+       __android_log_print(ANDROID_LOG_INFO, "BM_log_overhead", "%d", i);
+       StopBenchmarkTiming();
+       usleep(1000);
+    }
+}
+BENCHMARK(BM_log_overhead);
+
+static void caught_latency(int signum)
+{
+    unsigned long long v = 0xDEADBEEFA55A5AA5ULL;
+
+    LOG_FAILURE_RETRY(__android_log_btwrite(0, EVENT_TYPE_LONG, &v, sizeof(v)));
+}
+
+static unsigned long long caught_convert(char *cp)
+{
+    unsigned long long l = cp[0] & 0xFF;
+    l |= (unsigned long long) (cp[1] & 0xFF) << 8;
+    l |= (unsigned long long) (cp[2] & 0xFF) << 16;
+    l |= (unsigned long long) (cp[3] & 0xFF) << 24;
+    l |= (unsigned long long) (cp[4] & 0xFF) << 32;
+    l |= (unsigned long long) (cp[5] & 0xFF) << 40;
+    l |= (unsigned long long) (cp[6] & 0xFF) << 48;
+    l |= (unsigned long long) (cp[7] & 0xFF) << 56;
+    return l;
+}
+
+static const int alarm_time = 3;
+
+/*
+ *	Measure the time it takes for the logd posting call to acquire the
+ * timestamp to place into the internal record. Expect this to be less than
+ * 4 syscalls (3us).
+ */
+static void BM_log_latency(int iters) {
+    pid_t pid = getpid();
+
+    struct logger_list * logger_list = android_logger_list_open(LOG_ID_EVENTS,
+        O_RDONLY, 0, pid);
+
+    if (!logger_list) {
+        fprintf(stderr, "Unable to open events log: %s\n", strerror(errno));
+        exit(EXIT_FAILURE);
+    }
+
+    signal(SIGALRM, caught_latency);
+    alarm(alarm_time);
+
+    for (int j = 0, i = 0; i < iters && j < 10*iters; ++i, ++j) {
+        log_time ts;
+        LOG_FAILURE_RETRY((
+            clock_gettime(CLOCK_REALTIME, &ts),
+            android_btWriteLog(0, EVENT_TYPE_LONG, &ts, sizeof(ts))));
+
+        for (;;) {
+            log_msg log_msg;
+            int ret = android_logger_list_read(logger_list, &log_msg);
+            alarm(alarm_time);
+
+            if (ret <= 0) {
+                iters = i;
+                break;
+            }
+            if ((log_msg.entry.len != (4 + 1 + 8))
+             || (log_msg.id() != LOG_ID_EVENTS)) {
+                continue;
+            }
+
+            char* eventData = log_msg.msg();
+
+            if (eventData[4] != EVENT_TYPE_LONG) {
+                continue;
+            }
+            log_time tx(eventData + 4 + 1);
+            if (ts != tx) {
+                if (0xDEADBEEFA55A5AA5ULL == caught_convert(eventData + 4 + 1)) {
+                    iters = i;
+                    break;
+                }
+                continue;
+            }
+
+            uint64_t start = ts.nsec();
+            uint64_t end = log_msg.nsec();
+            if (end >= start) {
+                StartBenchmarkTiming(start);
+                StopBenchmarkTiming(end);
+            } else {
+                --i;
+            }
+            break;
+        }
+    }
+
+    signal(SIGALRM, SIG_DFL);
+    alarm(0);
+
+    android_logger_list_free(logger_list);
+}
+BENCHMARK(BM_log_latency);
+
+static void caught_delay(int signum)
+{
+    unsigned long long v = 0xDEADBEEFA55A5AA6ULL;
+
+    LOG_FAILURE_RETRY(__android_log_btwrite(0, EVENT_TYPE_LONG, &v, sizeof(v)));
+}
+
+/*
+ *	Measure the time it takes for the logd posting call to make it into
+ * the logs. Expect this to be less than double the process wakeup time (2ms).
+ */
+static void BM_log_delay(int iters) {
+    pid_t pid = getpid();
+
+    struct logger_list * logger_list = android_logger_list_open(LOG_ID_EVENTS,
+        O_RDONLY, 0, pid);
+
+    if (!logger_list) {
+        fprintf(stderr, "Unable to open events log: %s\n", strerror(errno));
+        exit(EXIT_FAILURE);
+    }
+
+    signal(SIGALRM, caught_delay);
+    alarm(alarm_time);
+
+    StartBenchmarkTiming();
+
+    for (int i = 0; i < iters; ++i) {
+        log_time ts(CLOCK_REALTIME);
+
+        LOG_FAILURE_RETRY(
+            android_btWriteLog(0, EVENT_TYPE_LONG, &ts, sizeof(ts)));
+
+        for (;;) {
+            log_msg log_msg;
+            int ret = android_logger_list_read(logger_list, &log_msg);
+            alarm(alarm_time);
+
+            if (ret <= 0) {
+                iters = i;
+                break;
+            }
+            if ((log_msg.entry.len != (4 + 1 + 8))
+             || (log_msg.id() != LOG_ID_EVENTS)) {
+                continue;
+            }
+
+            char* eventData = log_msg.msg();
+
+            if (eventData[4] != EVENT_TYPE_LONG) {
+                continue;
+            }
+            log_time tx(eventData + 4 + 1);
+            if (ts != tx) {
+                if (0xDEADBEEFA55A5AA6ULL == caught_convert(eventData + 4 + 1)) {
+                    iters = i;
+                    break;
+                }
+                continue;
+            }
+
+            break;
+        }
+    }
+
+    signal(SIGALRM, SIG_DFL);
+    alarm(0);
+
+    StopBenchmarkTiming();
+
+    android_logger_list_free(logger_list);
+}
+BENCHMARK(BM_log_delay);
diff --git a/liblog/tests/liblog_test.cpp b/liblog/tests/liblog_test.cpp
new file mode 100644
index 0000000..9ae8f22
--- /dev/null
+++ b/liblog/tests/liblog_test.cpp
@@ -0,0 +1,319 @@
+/*
+ * Copyright (C) 2013-2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <fcntl.h>
+#include <signal.h>
+#include <gtest/gtest.h>
+#include <log/log.h>
+#include <log/logger.h>
+#include <log/log_read.h>
+
+// enhanced version of LOG_FAILURE_RETRY to add support for EAGAIN and
+// non-syscall libs. Since we are only using this in the emergency of
+// a signal to stuff a terminating code into the logs, we will spin rather
+// than try a usleep.
+#define LOG_FAILURE_RETRY(exp) ({  \
+    typeof (exp) _rc;              \
+    do {                           \
+        _rc = (exp);               \
+    } while (((_rc == -1)          \
+           && ((errno == EINTR)    \
+            || (errno == EAGAIN))) \
+          || (_rc == -EINTR)       \
+          || (_rc == -EAGAIN));    \
+    _rc; })
+
+TEST(liblog, __android_log_buf_print) {
+    ASSERT_LT(0, __android_log_buf_print(LOG_ID_RADIO, ANDROID_LOG_INFO,
+                                         "TEST__android_log_buf_print",
+                                         "radio"));
+    usleep(1000);
+    ASSERT_LT(0, __android_log_buf_print(LOG_ID_SYSTEM, ANDROID_LOG_INFO,
+                                         "TEST__android_log_buf_print",
+                                         "system"));
+    usleep(1000);
+    ASSERT_LT(0, __android_log_buf_print(LOG_ID_MAIN, ANDROID_LOG_INFO,
+                                         "TEST__android_log_buf_print",
+                                         "main"));
+    usleep(1000);
+}
+
+TEST(liblog, __android_log_buf_write) {
+    ASSERT_LT(0, __android_log_buf_write(LOG_ID_RADIO, ANDROID_LOG_INFO,
+                                         "TEST__android_log_buf_write",
+                                         "radio"));
+    usleep(1000);
+    ASSERT_LT(0, __android_log_buf_write(LOG_ID_SYSTEM, ANDROID_LOG_INFO,
+                                         "TEST__android_log_buf_write",
+                                         "system"));
+    usleep(1000);
+    ASSERT_LT(0, __android_log_buf_write(LOG_ID_MAIN, ANDROID_LOG_INFO,
+                                         "TEST__android_log_buf_write",
+                                         "main"));
+    usleep(1000);
+}
+
+TEST(liblog, __android_log_btwrite) {
+    int intBuf = 0xDEADBEEF;
+    ASSERT_LT(0, __android_log_btwrite(0,
+                                      EVENT_TYPE_INT,
+                                      &intBuf, sizeof(intBuf)));
+    long long longBuf = 0xDEADBEEFA55A5AA5;
+    ASSERT_LT(0, __android_log_btwrite(0,
+                                      EVENT_TYPE_LONG,
+                                      &longBuf, sizeof(longBuf)));
+    usleep(1000);
+    char Buf[] = "\20\0\0\0DeAdBeEfA55a5aA5";
+    ASSERT_LT(0, __android_log_btwrite(0,
+                                      EVENT_TYPE_STRING,
+                                      Buf, sizeof(Buf) - 1));
+    usleep(1000);
+}
+
+static void* ConcurrentPrintFn(void *arg) {
+    int ret = __android_log_buf_print(LOG_ID_MAIN, ANDROID_LOG_INFO,
+                                  "TEST__android_log_print", "Concurrent %d",
+                                  reinterpret_cast<int>(arg));
+    return reinterpret_cast<void*>(ret);
+}
+
+#define NUM_CONCURRENT 64
+#define _concurrent_name(a,n) a##__concurrent##n
+#define concurrent_name(a,n) _concurrent_name(a,n)
+
+TEST(liblog, concurrent_name(__android_log_buf_print, NUM_CONCURRENT)) {
+    pthread_t t[NUM_CONCURRENT];
+    int i;
+    for (i=0; i < NUM_CONCURRENT; i++) {
+        ASSERT_EQ(0, pthread_create(&t[i], NULL,
+                                    ConcurrentPrintFn,
+                                    reinterpret_cast<void *>(i)));
+    }
+    int ret = 0;
+    for (i=0; i < NUM_CONCURRENT; i++) {
+        void* result;
+        ASSERT_EQ(0, pthread_join(t[i], &result));
+        if ((0 == ret) && (0 != reinterpret_cast<int>(result))) {
+            ret = reinterpret_cast<int>(result);
+        }
+    }
+    ASSERT_LT(0, ret);
+}
+
+TEST(liblog, __android_log_btwrite__android_logger_list_read) {
+    struct logger_list *logger_list;
+
+    pid_t pid = getpid();
+
+    ASSERT_EQ(0, NULL == (logger_list = android_logger_list_open(
+        LOG_ID_EVENTS, O_RDONLY | O_NDELAY, 1000, pid)));
+
+    log_time ts(CLOCK_MONOTONIC);
+
+    ASSERT_LT(0, __android_log_btwrite(0, EVENT_TYPE_LONG, &ts, sizeof(ts)));
+    usleep(1000000);
+
+    int count = 0;
+
+    for (;;) {
+        log_msg log_msg;
+        if (android_logger_list_read(logger_list, &log_msg) <= 0) {
+            break;
+        }
+
+        ASSERT_EQ(log_msg.entry.pid, pid);
+
+        if ((log_msg.entry.len != (4 + 1 + 8))
+         || (log_msg.id() != LOG_ID_EVENTS)) {
+            continue;
+        }
+
+        char *eventData = log_msg.msg();
+
+        if (eventData[4] != EVENT_TYPE_LONG) {
+            continue;
+        }
+
+        log_time tx(eventData + 4 + 1);
+        if (ts == tx) {
+            ++count;
+        }
+    }
+
+    ASSERT_EQ(1, count);
+
+    android_logger_list_close(logger_list);
+}
+
+static unsigned signaled;
+log_time signal_time;
+
+static void caught_blocking(int signum)
+{
+    unsigned long long v = 0xDEADBEEFA55A0000ULL;
+
+    v += getpid() & 0xFFFF;
+
+    ++signaled;
+    if ((signal_time.tv_sec == 0) && (signal_time.tv_nsec == 0)) {
+        clock_gettime(CLOCK_MONOTONIC, &signal_time);
+        signal_time.tv_sec += 2;
+    }
+
+    LOG_FAILURE_RETRY(__android_log_btwrite(0, EVENT_TYPE_LONG, &v, sizeof(v)));
+}
+
+// Fill in current process user and system time in 10ms increments
+static void get_ticks(unsigned long long *uticks, unsigned long long *sticks)
+{
+    *uticks = *sticks = 0;
+
+    pid_t pid = getpid();
+
+    char buffer[512];
+    snprintf(buffer, sizeof(buffer), "/proc/%u/stat", pid);
+
+    FILE *fp = fopen(buffer, "r");
+    if (!fp) {
+        return;
+    }
+
+    char *cp = fgets(buffer, sizeof(buffer), fp);
+    fclose(fp);
+    if (!cp) {
+        return;
+    }
+
+    pid_t d;
+    char s[sizeof(buffer)];
+    char c;
+    long long ll;
+    unsigned long long ull;
+
+    if (15 != sscanf(buffer,
+      "%d %s %c %lld %lld %lld %lld %lld %llu %llu %llu %llu %llu %llu %llu ",
+      &d, s, &c, &ll, &ll, &ll, &ll, &ll, &ull, &ull, &ull, &ull, &ull,
+      uticks, sticks)) {
+        *uticks = *sticks = 0;
+    }
+}
+
+TEST(liblog, android_logger_list_read__cpu) {
+    struct logger_list *logger_list;
+    unsigned long long v = 0xDEADBEEFA55A0000ULL;
+
+    pid_t pid = getpid();
+
+    v += pid & 0xFFFF;
+
+    ASSERT_EQ(0, NULL == (logger_list = android_logger_list_open(
+        LOG_ID_EVENTS, O_RDONLY, 1000, pid)));
+
+    int count = 0;
+
+    int signals = 0;
+
+    unsigned long long uticks_start;
+    unsigned long long sticks_start;
+    get_ticks(&uticks_start, &sticks_start);
+
+    const unsigned alarm_time = 10;
+
+    memset(&signal_time, 0, sizeof(signal_time));
+
+    signal(SIGALRM, caught_blocking);
+    alarm(alarm_time);
+
+    signaled = 0;
+
+    do {
+        log_msg log_msg;
+        if (android_logger_list_read(logger_list, &log_msg) <= 0) {
+            break;
+        }
+
+        alarm(alarm_time);
+
+        ++count;
+
+        ASSERT_EQ(log_msg.entry.pid, pid);
+
+        if ((log_msg.entry.len != (4 + 1 + 8))
+         || (log_msg.id() != LOG_ID_EVENTS)) {
+            continue;
+        }
+
+        char *eventData = log_msg.msg();
+
+        if (eventData[4] != EVENT_TYPE_LONG) {
+            continue;
+        }
+
+        unsigned long long l = eventData[4 + 1 + 0] & 0xFF;
+        l |= (unsigned long long) (eventData[4 + 1 + 1] & 0xFF) << 8;
+        l |= (unsigned long long) (eventData[4 + 1 + 2] & 0xFF) << 16;
+        l |= (unsigned long long) (eventData[4 + 1 + 3] & 0xFF) << 24;
+        l |= (unsigned long long) (eventData[4 + 1 + 4] & 0xFF) << 32;
+        l |= (unsigned long long) (eventData[4 + 1 + 5] & 0xFF) << 40;
+        l |= (unsigned long long) (eventData[4 + 1 + 6] & 0xFF) << 48;
+        l |= (unsigned long long) (eventData[4 + 1 + 7] & 0xFF) << 56;
+
+        if (l == v) {
+            ++signals;
+            break;
+        }
+    } while (!signaled || ({log_time t(CLOCK_MONOTONIC); t < signal_time;}));
+    alarm(0);
+    signal(SIGALRM, SIG_DFL);
+
+    ASSERT_LT(1, count);
+
+    ASSERT_EQ(1, signals);
+
+    android_logger_list_close(logger_list);
+
+    unsigned long long uticks_end;
+    unsigned long long sticks_end;
+    get_ticks(&uticks_end, &sticks_end);
+
+    // Less than 1% in either user or system time, or both
+    const unsigned long long one_percent_ticks = alarm_time;
+    unsigned long long user_ticks = uticks_end - uticks_start;
+    unsigned long long system_ticks = sticks_end - sticks_start;
+    ASSERT_GT(one_percent_ticks, user_ticks);
+    ASSERT_GT(one_percent_ticks, system_ticks);
+    ASSERT_GT(one_percent_ticks, user_ticks + system_ticks);
+}
+
+TEST(liblog, android_logger_get_) {
+    struct logger_list * logger_list = android_logger_list_alloc(O_WRONLY, 0, 0);
+
+    for(int i = LOG_ID_MIN; i < LOG_ID_MAX; ++i) {
+        log_id_t id = static_cast<log_id_t>(i);
+        const char *name = android_log_id_to_name(id);
+        if (id != android_name_to_log_id(name)) {
+            continue;
+        }
+        struct logger * logger;
+        ASSERT_EQ(0, NULL == (logger = android_logger_open(logger_list, id)));
+        ASSERT_EQ(id, android_logger_get_id(logger));
+        ASSERT_LT(0, android_logger_get_log_size(logger));
+        ASSERT_LT(0, android_logger_get_log_readable_size(logger));
+        ASSERT_LT(0, android_logger_get_log_version(logger));
+    }
+
+    android_logger_list_close(logger_list);
+}
diff --git a/liblog/uio.c b/liblog/uio.c
index cfa4cb1..24a6507 100644
--- a/liblog/uio.c
+++ b/liblog/uio.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2007 The Android Open Source Project
+ * Copyright (C) 2007-2014 The Android Open Source Project
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -24,8 +24,8 @@
     int   total = 0;
 
     for ( ; count > 0; count--, vecs++ ) {
-        const char*  buf = vecs->iov_base;
-        int          len = vecs->iov_len;
+        char*  buf = vecs->iov_base;
+        int    len = vecs->iov_len;
         
         while (len > 0) {
             int  ret = read( fd, buf, len );
@@ -51,8 +51,8 @@
     int   total = 0;
 
     for ( ; count > 0; count--, vecs++ ) {
-        const char*  buf = (const char*)vecs->iov_base;
-        int          len = (int)vecs->iov_len;
+        const char*  buf = vecs->iov_base;
+        int          len = vecs->iov_len;
         
         while (len > 0) {
             int  ret = write( fd, buf, len );
diff --git a/libmemtrack/memtrack_test.c b/libmemtrack/memtrack_test.c
index cd94bc5..eaadfa7 100644
--- a/libmemtrack/memtrack_test.c
+++ b/libmemtrack/memtrack_test.c
@@ -35,7 +35,7 @@
         return -1;
     }
 
-    if (asprintf(&filename, "/proc/%zd/cmdline", pid) < 0) {
+    if (asprintf(&filename, "/proc/%d/cmdline", pid) < 0) {
         rc = 1;
         goto exit;
     }
diff --git a/libpixelflinger/Android.mk b/libpixelflinger/Android.mk
index 0f502c0..fe50cc6 100644
--- a/libpixelflinger/Android.mk
+++ b/libpixelflinger/Android.mk
@@ -52,11 +52,11 @@
 
 LOCAL_SHARED_LIBRARIES := libcutils liblog
 
-ifeq ($(TARGET_ARCH),aarch64)
-PIXELFLINGER_SRC_FILES += arch-aarch64/t32cb16blend.S
-PIXELFLINGER_SRC_FILES += arch-aarch64/col32cb16blend.S
-PIXELFLINGER_SRC_FILES += codeflinger/Aarch64Assembler.cpp
-PIXELFLINGER_SRC_FILES += codeflinger/Aarch64Disassembler.cpp
+ifeq ($(TARGET_ARCH),arm64)
+PIXELFLINGER_SRC_FILES += arch-arm64/t32cb16blend.S
+PIXELFLINGER_SRC_FILES += arch-arm64/col32cb16blend.S
+PIXELFLINGER_SRC_FILES += codeflinger/Arm64Assembler.cpp
+PIXELFLINGER_SRC_FILES += codeflinger/Arm64Disassembler.cpp
 PIXELFLINGER_CFLAGS += -fstrict-aliasing -fomit-frame-pointer
 endif
 
diff --git a/libpixelflinger/arch-aarch64/col32cb16blend.S b/libpixelflinger/arch-arm64/col32cb16blend.S
similarity index 97%
rename from libpixelflinger/arch-aarch64/col32cb16blend.S
rename to libpixelflinger/arch-arm64/col32cb16blend.S
index aa969a4..18a01fd 100644
--- a/libpixelflinger/arch-aarch64/col32cb16blend.S
+++ b/libpixelflinger/arch-arm64/col32cb16blend.S
@@ -28,7 +28,7 @@
     .text
     .align
 
-    .global scanline_col32cb16blend_aarch64
+    .global scanline_col32cb16blend_arm64
 
 //
 // This function alpha blends a fixed color into a destination scanline, using
@@ -46,7 +46,7 @@
 // w2 = count
 
 
-scanline_col32cb16blend_aarch64:
+scanline_col32cb16blend_arm64:
 
     lsr         w5, w1, #24                     // shift down alpha
     mov         w9, #0xff                       // create mask
diff --git a/libpixelflinger/arch-aarch64/t32cb16blend.S b/libpixelflinger/arch-arm64/t32cb16blend.S
similarity index 98%
rename from libpixelflinger/arch-aarch64/t32cb16blend.S
rename to libpixelflinger/arch-arm64/t32cb16blend.S
index b62ed36..7da8cf5 100644
--- a/libpixelflinger/arch-aarch64/t32cb16blend.S
+++ b/libpixelflinger/arch-arm64/t32cb16blend.S
@@ -28,7 +28,7 @@
     .text
     .align
 
-    .global scanline_t32cb16blend_aarch64
+    .global scanline_t32cb16blend_arm64
 
 /*
  * .macro pixel
@@ -155,7 +155,7 @@
 // w12: scratch
 // w14: pixel
 
-scanline_t32cb16blend_aarch64:
+scanline_t32cb16blend_arm64:
 
     // align DST to 32 bits
     tst     x0, #0x3
diff --git a/libpixelflinger/codeflinger/ARMAssemblerInterface.h b/libpixelflinger/codeflinger/ARMAssemblerInterface.h
index 6e0d7c6..40cbfcf 100644
--- a/libpixelflinger/codeflinger/ARMAssemblerInterface.h
+++ b/libpixelflinger/codeflinger/ARMAssemblerInterface.h
@@ -63,7 +63,7 @@
     };
 
     enum {
-        CODEGEN_ARCH_ARM = 1, CODEGEN_ARCH_MIPS, CODEGEN_ARCH_AARCH64
+        CODEGEN_ARCH_ARM = 1, CODEGEN_ARCH_MIPS, CODEGEN_ARCH_ARM64
     };
 
     // -----------------------------------------------------------------------
diff --git a/libpixelflinger/codeflinger/Aarch64Assembler.cpp b/libpixelflinger/codeflinger/Arm64Assembler.cpp
similarity index 81%
rename from libpixelflinger/codeflinger/Aarch64Assembler.cpp
rename to libpixelflinger/codeflinger/Arm64Assembler.cpp
index 0e4f7df..f37072a 100644
--- a/libpixelflinger/codeflinger/Aarch64Assembler.cpp
+++ b/libpixelflinger/codeflinger/Arm64Assembler.cpp
@@ -26,7 +26,7 @@
  * SUCH DAMAGE.
  */
 
-#define LOG_TAG "ArmToAarch64Assembler"
+#define LOG_TAG "ArmToArm64Assembler"
 
 #include <stdio.h>
 #include <stdlib.h>
@@ -36,45 +36,45 @@
 #include <cutils/properties.h>
 #include <private/pixelflinger/ggl_context.h>
 
-#include "codeflinger/Aarch64Assembler.h"
+#include "codeflinger/Arm64Assembler.h"
 #include "codeflinger/CodeCache.h"
-#include "codeflinger/Aarch64Disassembler.h"
+#include "codeflinger/Arm64Disassembler.h"
 
 
 /*
 ** --------------------------------------------
-** Support for Aarch64 in GGLAssembler JIT
+** Support for Arm64 in GGLAssembler JIT
 ** --------------------------------------------
 **
 ** Approach
 ** - GGLAssembler and associated files are largely un-changed.
 ** - A translator class maps ArmAssemblerInterface calls to
-**   generate AArch64 instructions.
+**   generate Arm64 instructions.
 **
 ** ----------------------
-** ArmToAarch64Assembler
+** ArmToArm64Assembler
 ** ----------------------
 **
 ** - Subclassed from ArmAssemblerInterface
 **
 ** - Translates each ArmAssemblerInterface call to generate
-**   one or more Aarch64 instructions  as necessary.
+**   one or more Arm64 instructions  as necessary.
 **
 ** - Does not implement ArmAssemblerInterface portions unused by GGLAssembler
 **   It calls NOT_IMPLEMENTED() for such cases, which in turn logs
 **    a fatal message.
 **
 ** - Uses A64_.. series of functions to generate instruction machine code
-**   for Aarch64 instructions. These functions also log the instruction
-**   to LOG, if AARCH64_ASM_DEBUG define is set to 1
+**   for Arm64 instructions. These functions also log the instruction
+**   to LOG, if ARM64_ASM_DEBUG define is set to 1
 **
 ** - Dumps machine code and eqvt assembly if "debug.pf.disasm" option is set
-**   It uses aarch64_disassemble to perform disassembly
+**   It uses arm64_disassemble to perform disassembly
 **
 ** - Uses register 13 (SP in ARM), 15 (PC in ARM), 16, 17 for storing
 **   intermediate results. GGLAssembler does not use SP and PC as these
 **   registers are marked as reserved. The temporary registers are not
-**   saved/restored on stack as these are caller-saved registers in Aarch64
+**   saved/restored on stack as these are caller-saved registers in Arm64
 **
 ** - Uses CSEL instruction to support conditional execution. The result is
 **   stored in a temporary register and then copied to the target register
@@ -89,10 +89,10 @@
 **   move immediate instructions followed by register-register instruction.
 **
 ** --------------------------------------------
-** ArmToAarch64Assembler unit test bench
+** ArmToArm64Assembler unit test bench
 ** --------------------------------------------
 **
-** - Tests ArmToAarch64Assembler interface for all the possible
+** - Tests ArmToArm64Assembler interface for all the possible
 **   ways in which GGLAssembler uses ArmAssemblerInterface interface.
 **
 ** - Uses test jacket (written in assembly) to set the registers,
@@ -105,10 +105,10 @@
 **   (ii) data transfer tests and (iii) LDM/STM tests.
 **
 ** ----------------------
-** Aarch64 disassembler
+** Arm64 disassembler
 ** ----------------------
 ** - This disassembler disassembles only those machine codes which can be
-**   generated by ArmToAarch64Assembler. It has a unit testbench which
+**   generated by ArmToArm64Assembler. It has a unit testbench which
 **   tests all the instructions supported by the disassembler.
 **
 ** ------------------------------------------------------------------
@@ -122,13 +122,13 @@
 **   These are ADDR_LDR, ADDR_STR, ADDR_ADD, ADDR_SUB and they map to
 **   default 32 bit implementations in ARMAssemblerInterface.
 **
-** - ArmToAarch64Assembler maps these functions to appropriate 64 bit
+** - ArmToArm64Assembler maps these functions to appropriate 64 bit
 **   functions.
 **
 ** ----------------------
 ** GGLAssembler changes
 ** ----------------------
-** - Since ArmToAarch64Assembler can generate 4 Aarch64 instructions for
+** - Since ArmToArm64Assembler can generate 4 Arm64 instructions for
 **   each call in worst case, the memory required is set to 4 times
 **   ARM memory
 **
@@ -140,9 +140,9 @@
 
 #define NOT_IMPLEMENTED()  LOG_FATAL("Arm instruction %s not yet implemented\n", __func__)
 
-#define AARCH64_ASM_DEBUG 0
+#define ARM64_ASM_DEBUG 0
 
-#if AARCH64_ASM_DEBUG
+#if ARM64_ASM_DEBUG
     #define LOG_INSTR(...) ALOGD("\t" __VA_ARGS__)
     #define LOG_LABEL(...) ALOGD(__VA_ARGS__)
 #else
@@ -163,7 +163,7 @@
     "GE", "LT", "GT", "LE", "AL", "NV"
 };
 
-ArmToAarch64Assembler::ArmToAarch64Assembler(const sp<Assembly>& assembly)
+ArmToArm64Assembler::ArmToArm64Assembler(const sp<Assembly>& assembly)
     :   ARMAssemblerInterface(),
         mAssembly(assembly)
 {
@@ -175,7 +175,7 @@
     mTmpReg3 = 17;
 }
 
-ArmToAarch64Assembler::ArmToAarch64Assembler(void *base)
+ArmToArm64Assembler::ArmToArm64Assembler(void *base)
     :   ARMAssemblerInterface(), mAssembly(NULL)
 {
     mBase = mPC = (uint32_t *)base;
@@ -187,21 +187,21 @@
     mTmpReg3 = 17;
 }
 
-ArmToAarch64Assembler::~ArmToAarch64Assembler()
+ArmToArm64Assembler::~ArmToArm64Assembler()
 {
 }
 
-uint32_t* ArmToAarch64Assembler::pc() const
+uint32_t* ArmToArm64Assembler::pc() const
 {
     return mPC;
 }
 
-uint32_t* ArmToAarch64Assembler::base() const
+uint32_t* ArmToArm64Assembler::base() const
 {
     return mBase;
 }
 
-void ArmToAarch64Assembler::reset()
+void ArmToArm64Assembler::reset()
 {
     if(mAssembly == NULL)
         mPC = mBase;
@@ -211,19 +211,19 @@
     mLabels.clear();
     mLabelsInverseMapping.clear();
     mComments.clear();
-#if AARCH64_ASM_DEBUG
+#if ARM64_ASM_DEBUG
     ALOGI("RESET\n");
 #endif
 }
 
-int ArmToAarch64Assembler::getCodegenArch()
+int ArmToArm64Assembler::getCodegenArch()
 {
-    return CODEGEN_ARCH_AARCH64;
+    return CODEGEN_ARCH_ARM64;
 }
 
 // ----------------------------------------------------------------------------
 
-void ArmToAarch64Assembler::disassemble(const char* name)
+void ArmToArm64Assembler::disassemble(const char* name)
 {
     if(name)
     {
@@ -246,34 +246,34 @@
         printf("%p:    %08x    ", i, uint32_t(i[0]));
         {
             char instr[256];
-            ::aarch64_disassemble(*i, instr);
+            ::arm64_disassemble(*i, instr);
             printf("%s\n", instr);
         }
         i++;
     }
 }
 
-void ArmToAarch64Assembler::comment(const char* string)
+void ArmToArm64Assembler::comment(const char* string)
 {
     mComments.add(mPC, string);
     LOG_INSTR("//%s\n", string);
 }
 
-void ArmToAarch64Assembler::label(const char* theLabel)
+void ArmToArm64Assembler::label(const char* theLabel)
 {
     mLabels.add(theLabel, mPC);
     mLabelsInverseMapping.add(mPC, theLabel);
     LOG_LABEL("%s:\n", theLabel);
 }
 
-void ArmToAarch64Assembler::B(int cc, const char* label)
+void ArmToArm64Assembler::B(int cc, const char* label)
 {
     mBranchTargets.add(branch_target_t(label, mPC));
     LOG_INSTR("B%s %s\n", cc_codes[cc], label );
     *mPC++ = (0x54 << 24) | cc;
 }
 
-void ArmToAarch64Assembler::BL(int cc, const char* label)
+void ArmToArm64Assembler::BL(int cc, const char* label)
 {
     NOT_IMPLEMENTED(); //Not Required
 }
@@ -282,21 +282,21 @@
 //Prolog/Epilog & Generate...
 // ----------------------------------------------------------------------------
 
-void ArmToAarch64Assembler::prolog()
+void ArmToArm64Assembler::prolog()
 {
     // write prolog code
     mPrologPC = mPC;
     *mPC++ = A64_MOVZ_X(mZeroReg,0,0);
 }
 
-void ArmToAarch64Assembler::epilog(uint32_t touched)
+void ArmToArm64Assembler::epilog(uint32_t touched)
 {
     // write epilog code
     static const int XLR = 30;
     *mPC++ = A64_RET(XLR);
 }
 
-int ArmToAarch64Assembler::generate(const char* name)
+int ArmToArm64Assembler::generate(const char* name)
 {
     // fixup all the branches
     size_t count = mBranchTargets.size();
@@ -329,7 +329,7 @@
     return NO_ERROR;
 }
 
-uint32_t* ArmToAarch64Assembler::pcForLabel(const char* label)
+uint32_t* ArmToArm64Assembler::pcForLabel(const char* label)
 {
     return mLabels.valueFor(label);
 }
@@ -337,7 +337,7 @@
 // ----------------------------------------------------------------------------
 // Data Processing...
 // ----------------------------------------------------------------------------
-void ArmToAarch64Assembler::dataProcessingCommon(int opcode,
+void ArmToArm64Assembler::dataProcessingCommon(int opcode,
         int s, int Rd, int Rn, uint32_t Op2)
 {
     if(opcode != opSUB && s == 1)
@@ -405,7 +405,7 @@
     }
 }
 
-void ArmToAarch64Assembler::dataProcessing(int opcode, int cc,
+void ArmToArm64Assembler::dataProcessing(int opcode, int cc,
         int s, int Rd, int Rn, uint32_t Op2)
 {
     uint32_t Wd;
@@ -460,7 +460,7 @@
 // Address Processing...
 // ----------------------------------------------------------------------------
 
-void ArmToAarch64Assembler::ADDR_ADD(int cc,
+void ArmToArm64Assembler::ADDR_ADD(int cc,
         int s, int Rd, int Rn, uint32_t Op2)
 {
     if(cc != AL){ NOT_IMPLEMENTED(); return;} //Not required
@@ -495,7 +495,7 @@
     }
 }
 
-void ArmToAarch64Assembler::ADDR_SUB(int cc,
+void ArmToArm64Assembler::ADDR_SUB(int cc,
         int s, int Rd, int Rn, uint32_t Op2)
 {
     if(cc != AL){ NOT_IMPLEMENTED(); return;} //Not required
@@ -516,7 +516,7 @@
 // ----------------------------------------------------------------------------
 // multiply...
 // ----------------------------------------------------------------------------
-void ArmToAarch64Assembler::MLA(int cc, int s,int Rd, int Rm, int Rs, int Rn)
+void ArmToArm64Assembler::MLA(int cc, int s,int Rd, int Rm, int Rs, int Rn)
 {
     if(cc != AL){ NOT_IMPLEMENTED(); return;} //Not required
 
@@ -524,28 +524,28 @@
     if(s == 1)
         dataProcessingCommon(opSUB, 1, mTmpReg1, Rd, mZeroReg);
 }
-void ArmToAarch64Assembler::MUL(int cc, int s, int Rd, int Rm, int Rs)
+void ArmToArm64Assembler::MUL(int cc, int s, int Rd, int Rm, int Rs)
 {
     if(cc != AL){ NOT_IMPLEMENTED(); return;} //Not required
     if(s  != 0) { NOT_IMPLEMENTED(); return;} //Not required
     *mPC++ = A64_MADD_W(Rd, Rm, Rs, mZeroReg);
 }
-void ArmToAarch64Assembler::UMULL(int cc, int s,
+void ArmToArm64Assembler::UMULL(int cc, int s,
         int RdLo, int RdHi, int Rm, int Rs)
 {
     NOT_IMPLEMENTED(); //Not required
 }
-void ArmToAarch64Assembler::UMUAL(int cc, int s,
+void ArmToArm64Assembler::UMUAL(int cc, int s,
         int RdLo, int RdHi, int Rm, int Rs)
 {
     NOT_IMPLEMENTED(); //Not required
 }
-void ArmToAarch64Assembler::SMULL(int cc, int s,
+void ArmToArm64Assembler::SMULL(int cc, int s,
         int RdLo, int RdHi, int Rm, int Rs)
 {
     NOT_IMPLEMENTED(); //Not required
 }
-void ArmToAarch64Assembler::SMUAL(int cc, int s,
+void ArmToArm64Assembler::SMUAL(int cc, int s,
         int RdLo, int RdHi, int Rm, int Rs)
 {
     NOT_IMPLEMENTED(); //Not required
@@ -554,15 +554,15 @@
 // ----------------------------------------------------------------------------
 // branches relative to PC...
 // ----------------------------------------------------------------------------
-void ArmToAarch64Assembler::B(int cc, uint32_t* pc){
+void ArmToArm64Assembler::B(int cc, uint32_t* pc){
     NOT_IMPLEMENTED(); //Not required
 }
 
-void ArmToAarch64Assembler::BL(int cc, uint32_t* pc){
+void ArmToArm64Assembler::BL(int cc, uint32_t* pc){
     NOT_IMPLEMENTED(); //Not required
 }
 
-void ArmToAarch64Assembler::BX(int cc, int Rn){
+void ArmToArm64Assembler::BX(int cc, int Rn){
     NOT_IMPLEMENTED(); //Not required
 }
 
@@ -574,7 +574,7 @@
     opLDR,opLDRB,opLDRH,opSTR,opSTRB,opSTRH
 };
 
-void ArmToAarch64Assembler::dataTransfer(int op, int cc,
+void ArmToArm64Assembler::dataTransfer(int op, int cc,
                             int Rd, int Rn, uint32_t op_type, uint32_t size)
 {
     const int XSP = 31;
@@ -631,46 +631,46 @@
     return;
 
 }
-void ArmToAarch64Assembler::ADDR_LDR(int cc, int Rd, int Rn, uint32_t op_type)
+void ArmToArm64Assembler::ADDR_LDR(int cc, int Rd, int Rn, uint32_t op_type)
 {
     return dataTransfer(opLDR, cc, Rd, Rn, op_type, 64);
 }
-void ArmToAarch64Assembler::ADDR_STR(int cc, int Rd, int Rn, uint32_t op_type)
+void ArmToArm64Assembler::ADDR_STR(int cc, int Rd, int Rn, uint32_t op_type)
 {
     return dataTransfer(opSTR, cc, Rd, Rn, op_type, 64);
 }
-void ArmToAarch64Assembler::LDR(int cc, int Rd, int Rn, uint32_t op_type)
+void ArmToArm64Assembler::LDR(int cc, int Rd, int Rn, uint32_t op_type)
 {
     return dataTransfer(opLDR, cc, Rd, Rn, op_type);
 }
-void ArmToAarch64Assembler::LDRB(int cc, int Rd, int Rn, uint32_t op_type)
+void ArmToArm64Assembler::LDRB(int cc, int Rd, int Rn, uint32_t op_type)
 {
     return dataTransfer(opLDRB, cc, Rd, Rn, op_type);
 }
-void ArmToAarch64Assembler::STR(int cc, int Rd, int Rn, uint32_t op_type)
+void ArmToArm64Assembler::STR(int cc, int Rd, int Rn, uint32_t op_type)
 {
     return dataTransfer(opSTR, cc, Rd, Rn, op_type);
 }
 
-void ArmToAarch64Assembler::STRB(int cc, int Rd, int Rn, uint32_t op_type)
+void ArmToArm64Assembler::STRB(int cc, int Rd, int Rn, uint32_t op_type)
 {
     return dataTransfer(opSTRB, cc, Rd, Rn, op_type);
 }
 
-void ArmToAarch64Assembler::LDRH(int cc, int Rd, int Rn, uint32_t op_type)
+void ArmToArm64Assembler::LDRH(int cc, int Rd, int Rn, uint32_t op_type)
 {
     return dataTransfer(opLDRH, cc, Rd, Rn, op_type);
 }
-void ArmToAarch64Assembler::LDRSB(int cc, int Rd, int Rn, uint32_t offset)
+void ArmToArm64Assembler::LDRSB(int cc, int Rd, int Rn, uint32_t offset)
 {
     NOT_IMPLEMENTED(); //Not required
 }
-void ArmToAarch64Assembler::LDRSH(int cc, int Rd, int Rn, uint32_t offset)
+void ArmToArm64Assembler::LDRSH(int cc, int Rd, int Rn, uint32_t offset)
 {
     NOT_IMPLEMENTED(); //Not required
 }
 
-void ArmToAarch64Assembler::STRH(int cc, int Rd, int Rn, uint32_t op_type)
+void ArmToArm64Assembler::STRH(int cc, int Rd, int Rn, uint32_t op_type)
 {
     return dataTransfer(opSTRH, cc, Rd, Rn, op_type);
 }
@@ -678,7 +678,7 @@
 // ----------------------------------------------------------------------------
 // block data transfer...
 // ----------------------------------------------------------------------------
-void ArmToAarch64Assembler::LDM(int cc, int dir,
+void ArmToArm64Assembler::LDM(int cc, int dir,
         int Rn, int W, uint32_t reg_list)
 {
     const int XSP = 31;
@@ -699,7 +699,7 @@
     }
 }
 
-void ArmToAarch64Assembler::STM(int cc, int dir,
+void ArmToArm64Assembler::STM(int cc, int dir,
         int Rn, int W, uint32_t reg_list)
 {
     const int XSP = 31;
@@ -723,15 +723,15 @@
 // ----------------------------------------------------------------------------
 // special...
 // ----------------------------------------------------------------------------
-void ArmToAarch64Assembler::SWP(int cc, int Rn, int Rd, int Rm)
+void ArmToArm64Assembler::SWP(int cc, int Rn, int Rd, int Rm)
 {
     NOT_IMPLEMENTED(); //Not required
 }
-void ArmToAarch64Assembler::SWPB(int cc, int Rn, int Rd, int Rm)
+void ArmToArm64Assembler::SWPB(int cc, int Rn, int Rd, int Rm)
 {
     NOT_IMPLEMENTED(); //Not required
 }
-void ArmToAarch64Assembler::SWI(int cc, uint32_t comment)
+void ArmToArm64Assembler::SWI(int cc, uint32_t comment)
 {
     NOT_IMPLEMENTED(); //Not required
 }
@@ -739,31 +739,31 @@
 // ----------------------------------------------------------------------------
 // DSP instructions...
 // ----------------------------------------------------------------------------
-void ArmToAarch64Assembler::PLD(int Rn, uint32_t offset) {
+void ArmToArm64Assembler::PLD(int Rn, uint32_t offset) {
     NOT_IMPLEMENTED(); //Not required
 }
 
-void ArmToAarch64Assembler::CLZ(int cc, int Rd, int Rm)
+void ArmToArm64Assembler::CLZ(int cc, int Rd, int Rm)
 {
     NOT_IMPLEMENTED(); //Not required
 }
 
-void ArmToAarch64Assembler::QADD(int cc,  int Rd, int Rm, int Rn)
+void ArmToArm64Assembler::QADD(int cc,  int Rd, int Rm, int Rn)
 {
     NOT_IMPLEMENTED(); //Not required
 }
 
-void ArmToAarch64Assembler::QDADD(int cc,  int Rd, int Rm, int Rn)
+void ArmToArm64Assembler::QDADD(int cc,  int Rd, int Rm, int Rn)
 {
     NOT_IMPLEMENTED(); //Not required
 }
 
-void ArmToAarch64Assembler::QSUB(int cc,  int Rd, int Rm, int Rn)
+void ArmToArm64Assembler::QSUB(int cc,  int Rd, int Rm, int Rn)
 {
     NOT_IMPLEMENTED(); //Not required
 }
 
-void ArmToAarch64Assembler::QDSUB(int cc,  int Rd, int Rm, int Rn)
+void ArmToArm64Assembler::QDSUB(int cc,  int Rd, int Rm, int Rn)
 {
     NOT_IMPLEMENTED(); //Not required
 }
@@ -771,7 +771,7 @@
 // ----------------------------------------------------------------------------
 // 16 x 16 multiplication
 // ----------------------------------------------------------------------------
-void ArmToAarch64Assembler::SMUL(int cc, int xy,
+void ArmToArm64Assembler::SMUL(int cc, int xy,
                 int Rd, int Rm, int Rs)
 {
     if(cc != AL){ NOT_IMPLEMENTED(); return;} //Not required
@@ -791,7 +791,7 @@
 // ----------------------------------------------------------------------------
 // 32 x 16 multiplication
 // ----------------------------------------------------------------------------
-void ArmToAarch64Assembler::SMULW(int cc, int y, int Rd, int Rm, int Rs)
+void ArmToArm64Assembler::SMULW(int cc, int y, int Rd, int Rm, int Rs)
 {
     if(cc != AL){ NOT_IMPLEMENTED(); return;} //Not required
 
@@ -807,7 +807,7 @@
 // ----------------------------------------------------------------------------
 // 16 x 16 multiplication and accumulate
 // ----------------------------------------------------------------------------
-void ArmToAarch64Assembler::SMLA(int cc, int xy, int Rd, int Rm, int Rs, int Rn)
+void ArmToArm64Assembler::SMLA(int cc, int xy, int Rd, int Rm, int Rs, int Rn)
 {
     if(cc != AL){ NOT_IMPLEMENTED(); return;} //Not required
     if(xy != xyBB) { NOT_IMPLEMENTED(); return;} //Not required
@@ -817,14 +817,14 @@
     *mPC++ = A64_MADD_W(Rd, mTmpReg1, mTmpReg2, Rn);
 }
 
-void ArmToAarch64Assembler::SMLAL(int cc, int xy,
+void ArmToArm64Assembler::SMLAL(int cc, int xy,
                 int RdHi, int RdLo, int Rs, int Rm)
 {
     NOT_IMPLEMENTED(); //Not required
     return;
 }
 
-void ArmToAarch64Assembler::SMLAW(int cc, int y,
+void ArmToArm64Assembler::SMLAW(int cc, int y,
                 int Rd, int Rm, int Rs, int Rn)
 {
     NOT_IMPLEMENTED(); //Not required
@@ -834,7 +834,7 @@
 // ----------------------------------------------------------------------------
 // Byte/half word extract and extend
 // ----------------------------------------------------------------------------
-void ArmToAarch64Assembler::UXTB16(int cc, int Rd, int Rm, int rotate)
+void ArmToArm64Assembler::UXTB16(int cc, int Rd, int Rm, int rotate)
 {
     if(cc != AL){ NOT_IMPLEMENTED(); return;} //Not required
 
@@ -849,7 +849,7 @@
 // ----------------------------------------------------------------------------
 // Bit manipulation
 // ----------------------------------------------------------------------------
-void ArmToAarch64Assembler::UBFX(int cc, int Rd, int Rn, int lsb, int width)
+void ArmToArm64Assembler::UBFX(int cc, int Rd, int Rn, int lsb, int width)
 {
     if(cc != AL){ NOT_IMPLEMENTED(); return;} //Not required
     *mPC++ = A64_UBFM_W(Rd, Rn, lsb, lsb + width - 1);
@@ -857,7 +857,7 @@
 // ----------------------------------------------------------------------------
 // Shifters...
 // ----------------------------------------------------------------------------
-int ArmToAarch64Assembler::buildImmediate(
+int ArmToArm64Assembler::buildImmediate(
         uint32_t immediate, uint32_t& rot, uint32_t& imm)
 {
     rot = 0;
@@ -866,13 +866,13 @@
 }
 
 
-bool ArmToAarch64Assembler::isValidImmediate(uint32_t immediate)
+bool ArmToArm64Assembler::isValidImmediate(uint32_t immediate)
 {
     uint32_t rot, imm;
     return buildImmediate(immediate, rot, imm) == 0;
 }
 
-uint32_t ArmToAarch64Assembler::imm(uint32_t immediate)
+uint32_t ArmToArm64Assembler::imm(uint32_t immediate)
 {
     mAddrMode.immediate = immediate;
     mAddrMode.writeback = false;
@@ -882,7 +882,7 @@
 
 }
 
-uint32_t ArmToAarch64Assembler::reg_imm(int Rm, int type, uint32_t shift)
+uint32_t ArmToArm64Assembler::reg_imm(int Rm, int type, uint32_t shift)
 {
     mAddrMode.reg_imm_Rm = Rm;
     mAddrMode.reg_imm_type = type;
@@ -890,13 +890,13 @@
     return OPERAND_REG_IMM;
 }
 
-uint32_t ArmToAarch64Assembler::reg_rrx(int Rm)
+uint32_t ArmToArm64Assembler::reg_rrx(int Rm)
 {
     NOT_IMPLEMENTED();
     return OPERAND_UNSUPPORTED;
 }
 
-uint32_t ArmToAarch64Assembler::reg_reg(int Rm, int type, int Rs)
+uint32_t ArmToArm64Assembler::reg_reg(int Rm, int type, int Rs)
 {
     NOT_IMPLEMENTED(); //Not required
     return OPERAND_UNSUPPORTED;
@@ -904,7 +904,7 @@
 // ----------------------------------------------------------------------------
 // Addressing modes...
 // ----------------------------------------------------------------------------
-uint32_t ArmToAarch64Assembler::immed12_pre(int32_t immed12, int W)
+uint32_t ArmToArm64Assembler::immed12_pre(int32_t immed12, int W)
 {
     mAddrMode.immediate = immed12;
     mAddrMode.writeback = W;
@@ -913,7 +913,7 @@
     return OPERAND_IMM;
 }
 
-uint32_t ArmToAarch64Assembler::immed12_post(int32_t immed12)
+uint32_t ArmToArm64Assembler::immed12_post(int32_t immed12)
 {
     mAddrMode.immediate = immed12;
     mAddrMode.writeback = true;
@@ -922,7 +922,7 @@
     return OPERAND_IMM;
 }
 
-uint32_t ArmToAarch64Assembler::reg_scale_pre(int Rm, int type,
+uint32_t ArmToArm64Assembler::reg_scale_pre(int Rm, int type,
         uint32_t shift, int W)
 {
     if(type != 0 || shift != 0 || W != 0)
@@ -937,13 +937,13 @@
     }
 }
 
-uint32_t ArmToAarch64Assembler::reg_scale_post(int Rm, int type, uint32_t shift)
+uint32_t ArmToArm64Assembler::reg_scale_post(int Rm, int type, uint32_t shift)
 {
     NOT_IMPLEMENTED(); //Not required
     return OPERAND_UNSUPPORTED;
 }
 
-uint32_t ArmToAarch64Assembler::immed8_pre(int32_t immed8, int W)
+uint32_t ArmToArm64Assembler::immed8_pre(int32_t immed8, int W)
 {
     mAddrMode.immediate = immed8;
     mAddrMode.writeback = W;
@@ -952,7 +952,7 @@
     return OPERAND_IMM;
 }
 
-uint32_t ArmToAarch64Assembler::immed8_post(int32_t immed8)
+uint32_t ArmToArm64Assembler::immed8_post(int32_t immed8)
 {
     mAddrMode.immediate = immed8;
     mAddrMode.writeback = true;
@@ -961,7 +961,7 @@
     return OPERAND_IMM;
 }
 
-uint32_t ArmToAarch64Assembler::reg_pre(int Rm, int W)
+uint32_t ArmToArm64Assembler::reg_pre(int Rm, int W)
 {
     if(W != 0)
     {
@@ -975,7 +975,7 @@
     }
 }
 
-uint32_t ArmToAarch64Assembler::reg_post(int Rm)
+uint32_t ArmToArm64Assembler::reg_post(int Rm)
 {
     NOT_IMPLEMENTED(); //Not required
     return OPERAND_UNSUPPORTED;
@@ -999,7 +999,7 @@
     ((0x38u << 24) | (0x1 << 21) | (0x6 << 13) | (0x1 << 12) |(0x1 << 11)),
     ((0x78u << 24) | (0x1 << 21) | (0x6 << 13) | (0x0 << 12) |(0x1 << 11))
 };
-uint32_t ArmToAarch64Assembler::A64_LDRSTR_Wm_SXTW_0(uint32_t op,
+uint32_t ArmToArm64Assembler::A64_LDRSTR_Wm_SXTW_0(uint32_t op,
                             uint32_t size, uint32_t Rt,
                             uint32_t Rn, uint32_t Rm)
 {
@@ -1017,7 +1017,7 @@
     }
 }
 
-uint32_t ArmToAarch64Assembler::A64_STR_IMM_PreIndex(uint32_t Rt,
+uint32_t ArmToArm64Assembler::A64_STR_IMM_PreIndex(uint32_t Rt,
                             uint32_t Rn, int32_t simm)
 {
     if(Rn == 31)
@@ -1029,7 +1029,7 @@
     return (0xB8 << 24) | (imm9 << 12) | (0x3 << 10) | (Rn << 5) | Rt;
 }
 
-uint32_t ArmToAarch64Assembler::A64_LDR_IMM_PostIndex(uint32_t Rt,
+uint32_t ArmToArm64Assembler::A64_LDR_IMM_PostIndex(uint32_t Rt,
                             uint32_t Rn, int32_t simm)
 {
     if(Rn == 31)
@@ -1042,7 +1042,7 @@
              (imm9 << 12) | (0x1 << 10) | (Rn << 5) | Rt;
 
 }
-uint32_t ArmToAarch64Assembler::A64_ADD_X_Wm_SXTW(uint32_t Rd,
+uint32_t ArmToArm64Assembler::A64_ADD_X_Wm_SXTW(uint32_t Rd,
                                uint32_t Rn,
                                uint32_t Rm,
                                uint32_t amount)
@@ -1053,7 +1053,7 @@
 
 }
 
-uint32_t ArmToAarch64Assembler::A64_SUB_X_Wm_SXTW(uint32_t Rd,
+uint32_t ArmToArm64Assembler::A64_SUB_X_Wm_SXTW(uint32_t Rd,
                                uint32_t Rn,
                                uint32_t Rm,
                                uint32_t amount)
@@ -1064,13 +1064,13 @@
 
 }
 
-uint32_t ArmToAarch64Assembler::A64_B_COND(uint32_t cc, uint32_t offset)
+uint32_t ArmToArm64Assembler::A64_B_COND(uint32_t cc, uint32_t offset)
 {
     LOG_INSTR("B.%s #.+%d\n", cc_codes[cc], offset);
     return (0x54 << 24) | ((offset/4) << 5) | (cc);
 
 }
-uint32_t ArmToAarch64Assembler::A64_ADD_X(uint32_t Rd, uint32_t Rn,
+uint32_t ArmToArm64Assembler::A64_ADD_X(uint32_t Rd, uint32_t Rn,
                                           uint32_t Rm, uint32_t shift,
                                           uint32_t amount)
 {
@@ -1079,21 +1079,21 @@
     return ((0x8B << 24) | (shift << 22) | ( Rm << 16) |
             (amount << 10) |(Rn << 5) | Rd);
 }
-uint32_t ArmToAarch64Assembler::A64_ADD_IMM_X(uint32_t Rd, uint32_t Rn,
+uint32_t ArmToArm64Assembler::A64_ADD_IMM_X(uint32_t Rd, uint32_t Rn,
                                           uint32_t imm, uint32_t shift)
 {
     LOG_INSTR("ADD X%d, X%d, #%d, LSL #%d\n", Rd, Rn, imm, shift);
     return (0x91 << 24) | ((shift/12) << 22) | (imm << 10) | (Rn << 5) | Rd;
 }
 
-uint32_t ArmToAarch64Assembler::A64_SUB_IMM_X(uint32_t Rd, uint32_t Rn,
+uint32_t ArmToArm64Assembler::A64_SUB_IMM_X(uint32_t Rd, uint32_t Rn,
                                           uint32_t imm, uint32_t shift)
 {
     LOG_INSTR("SUB X%d, X%d, #%d, LSL #%d\n", Rd, Rn, imm, shift);
     return (0xD1 << 24) | ((shift/12) << 22) | (imm << 10) | (Rn << 5) | Rd;
 }
 
-uint32_t ArmToAarch64Assembler::A64_ADD_W(uint32_t Rd, uint32_t Rn,
+uint32_t ArmToArm64Assembler::A64_ADD_W(uint32_t Rd, uint32_t Rn,
                                           uint32_t Rm, uint32_t shift,
                                           uint32_t amount)
 {
@@ -1103,7 +1103,7 @@
             (amount << 10) |(Rn << 5) | Rd);
 }
 
-uint32_t ArmToAarch64Assembler::A64_SUB_W(uint32_t Rd, uint32_t Rn,
+uint32_t ArmToArm64Assembler::A64_SUB_W(uint32_t Rd, uint32_t Rn,
                                           uint32_t Rm, uint32_t shift,
                                           uint32_t amount,
                                           uint32_t setflag)
@@ -1124,7 +1124,7 @@
     }
 }
 
-uint32_t ArmToAarch64Assembler::A64_AND_W(uint32_t Rd, uint32_t Rn,
+uint32_t ArmToArm64Assembler::A64_AND_W(uint32_t Rd, uint32_t Rn,
                                           uint32_t Rm, uint32_t shift,
                                           uint32_t amount)
 {
@@ -1134,7 +1134,7 @@
             (amount << 10) |(Rn << 5) | Rd);
 }
 
-uint32_t ArmToAarch64Assembler::A64_ORR_W(uint32_t Rd, uint32_t Rn,
+uint32_t ArmToArm64Assembler::A64_ORR_W(uint32_t Rd, uint32_t Rn,
                                           uint32_t Rm, uint32_t shift,
                                           uint32_t amount)
 {
@@ -1144,7 +1144,7 @@
             (amount << 10) |(Rn << 5) | Rd);
 }
 
-uint32_t ArmToAarch64Assembler::A64_ORN_W(uint32_t Rd, uint32_t Rn,
+uint32_t ArmToArm64Assembler::A64_ORN_W(uint32_t Rd, uint32_t Rn,
                                           uint32_t Rm, uint32_t shift,
                                           uint32_t amount)
 {
@@ -1154,76 +1154,76 @@
             (amount << 10) |(Rn << 5) | Rd);
 }
 
-uint32_t ArmToAarch64Assembler::A64_CSEL_X(uint32_t Rd, uint32_t Rn,
+uint32_t ArmToArm64Assembler::A64_CSEL_X(uint32_t Rd, uint32_t Rn,
                                            uint32_t Rm, uint32_t cond)
 {
     LOG_INSTR("CSEL X%d, X%d, X%d, %s\n", Rd, Rn, Rm, cc_codes[cond]);
     return ((0x9A << 24)|(0x1 << 23)|(Rm << 16) |(cond << 12)| (Rn << 5) | Rd);
 }
 
-uint32_t ArmToAarch64Assembler::A64_CSEL_W(uint32_t Rd, uint32_t Rn,
+uint32_t ArmToArm64Assembler::A64_CSEL_W(uint32_t Rd, uint32_t Rn,
                                            uint32_t Rm, uint32_t cond)
 {
     LOG_INSTR("CSEL W%d, W%d, W%d, %s\n", Rd, Rn, Rm, cc_codes[cond]);
     return ((0x1A << 24)|(0x1 << 23)|(Rm << 16) |(cond << 12)| (Rn << 5) | Rd);
 }
 
-uint32_t ArmToAarch64Assembler::A64_RET(uint32_t Rn)
+uint32_t ArmToArm64Assembler::A64_RET(uint32_t Rn)
 {
     LOG_INSTR("RET X%d\n", Rn);
     return ((0xD6 << 24) | (0x1 << 22) | (0x1F << 16) | (Rn << 5));
 }
 
-uint32_t ArmToAarch64Assembler::A64_MOVZ_X(uint32_t Rd, uint32_t imm,
+uint32_t ArmToArm64Assembler::A64_MOVZ_X(uint32_t Rd, uint32_t imm,
                                          uint32_t shift)
 {
     LOG_INSTR("MOVZ X%d, #0x%x, LSL #%d\n", Rd, imm, shift);
     return(0xD2 << 24) | (0x1 << 23) | ((shift/16) << 21) |  (imm << 5) | Rd;
 }
 
-uint32_t ArmToAarch64Assembler::A64_MOVK_W(uint32_t Rd, uint32_t imm,
+uint32_t ArmToArm64Assembler::A64_MOVK_W(uint32_t Rd, uint32_t imm,
                                          uint32_t shift)
 {
     LOG_INSTR("MOVK W%d, #0x%x, LSL #%d\n", Rd, imm, shift);
     return (0x72 << 24) | (0x1 << 23) | ((shift/16) << 21) | (imm << 5) | Rd;
 }
 
-uint32_t ArmToAarch64Assembler::A64_MOVZ_W(uint32_t Rd, uint32_t imm,
+uint32_t ArmToArm64Assembler::A64_MOVZ_W(uint32_t Rd, uint32_t imm,
                                          uint32_t shift)
 {
     LOG_INSTR("MOVZ W%d, #0x%x, LSL #%d\n", Rd, imm, shift);
     return(0x52 << 24) | (0x1 << 23) | ((shift/16) << 21) |  (imm << 5) | Rd;
 }
 
-uint32_t ArmToAarch64Assembler::A64_SMADDL(uint32_t Rd, uint32_t Rn,
+uint32_t ArmToArm64Assembler::A64_SMADDL(uint32_t Rd, uint32_t Rn,
                                            uint32_t Rm, uint32_t Ra)
 {
     LOG_INSTR("SMADDL X%d, W%d, W%d, X%d\n",Rd, Rn, Rm, Ra);
     return ((0x9B << 24) | (0x1 << 21) | (Rm << 16)|(Ra << 10)|(Rn << 5) | Rd);
 }
 
-uint32_t ArmToAarch64Assembler::A64_MADD_W(uint32_t Rd, uint32_t Rn,
+uint32_t ArmToArm64Assembler::A64_MADD_W(uint32_t Rd, uint32_t Rn,
                                            uint32_t Rm, uint32_t Ra)
 {
     LOG_INSTR("MADD W%d, W%d, W%d, W%d\n",Rd, Rn, Rm, Ra);
     return ((0x1B << 24) | (Rm << 16) | (Ra << 10) |(Rn << 5) | Rd);
 }
 
-uint32_t ArmToAarch64Assembler::A64_SBFM_W(uint32_t Rd, uint32_t Rn,
+uint32_t ArmToArm64Assembler::A64_SBFM_W(uint32_t Rd, uint32_t Rn,
                                            uint32_t immr, uint32_t imms)
 {
     LOG_INSTR("SBFM W%d, W%d, #%d, #%d\n", Rd, Rn, immr, imms);
     return ((0x13 << 24) | (immr << 16) | (imms << 10) | (Rn << 5) | Rd);
 
 }
-uint32_t ArmToAarch64Assembler::A64_UBFM_W(uint32_t Rd, uint32_t Rn,
+uint32_t ArmToArm64Assembler::A64_UBFM_W(uint32_t Rd, uint32_t Rn,
                                            uint32_t immr, uint32_t imms)
 {
     LOG_INSTR("UBFM W%d, W%d, #%d, #%d\n", Rd, Rn, immr, imms);
     return ((0x53 << 24) | (immr << 16) | (imms << 10) | (Rn << 5) | Rd);
 
 }
-uint32_t ArmToAarch64Assembler::A64_UBFM_X(uint32_t Rd, uint32_t Rn,
+uint32_t ArmToArm64Assembler::A64_UBFM_X(uint32_t Rd, uint32_t Rn,
                                            uint32_t immr, uint32_t imms)
 {
     LOG_INSTR("UBFM X%d, X%d, #%d, #%d\n", Rd, Rn, immr, imms);
@@ -1231,7 +1231,7 @@
             (immr << 16) | (imms << 10) | (Rn << 5) | Rd);
 
 }
-uint32_t ArmToAarch64Assembler::A64_EXTR_W(uint32_t Rd, uint32_t Rn,
+uint32_t ArmToArm64Assembler::A64_EXTR_W(uint32_t Rd, uint32_t Rn,
                                            uint32_t Rm, uint32_t lsb)
 {
     LOG_INSTR("EXTR W%d, W%d, W%d, #%d\n", Rd, Rn, Rm, lsb);
diff --git a/libpixelflinger/codeflinger/Aarch64Assembler.h b/libpixelflinger/codeflinger/Arm64Assembler.h
similarity index 95%
rename from libpixelflinger/codeflinger/Aarch64Assembler.h
rename to libpixelflinger/codeflinger/Arm64Assembler.h
index 79c912b..8479270 100644
--- a/libpixelflinger/codeflinger/Aarch64Assembler.h
+++ b/libpixelflinger/codeflinger/Arm64Assembler.h
@@ -26,8 +26,8 @@
  * SUCH DAMAGE.
  */
 
-#ifndef ANDROID_ARMTOAARCH64ASSEMBLER_H
-#define ANDROID_ARMTOAARCH64ASSEMBLER_H
+#ifndef ANDROID_ARMTOARM64ASSEMBLER_H
+#define ANDROID_ARMTOARM64ASSEMBLER_H
 
 #include <stdint.h>
 #include <sys/types.h>
@@ -44,12 +44,12 @@
 
 // ----------------------------------------------------------------------------
 
-class ArmToAarch64Assembler : public ARMAssemblerInterface
+class ArmToArm64Assembler : public ARMAssemblerInterface
 {
 public:
-                ArmToAarch64Assembler(const sp<Assembly>& assembly);
-                ArmToAarch64Assembler(void *base);
-    virtual     ~ArmToAarch64Assembler();
+                ArmToArm64Assembler(const sp<Assembly>& assembly);
+                ArmToArm64Assembler(void *base);
+    virtual     ~ArmToArm64Assembler();
 
     uint32_t*   base() const;
     uint32_t*   pc() const;
@@ -176,8 +176,8 @@
     virtual void UBFX(int cc, int Rd, int Rn, int lsb, int width);
 
 private:
-    ArmToAarch64Assembler(const ArmToAarch64Assembler& rhs);
-    ArmToAarch64Assembler& operator = (const ArmToAarch64Assembler& rhs);
+    ArmToArm64Assembler(const ArmToArm64Assembler& rhs);
+    ArmToArm64Assembler& operator = (const ArmToArm64Assembler& rhs);
 
     // -----------------------------------------------------------------------
     // helper functions
@@ -189,7 +189,7 @@
                       int Rd, int Rn, uint32_t Op2);
 
     // -----------------------------------------------------------------------
-    // Aarch64 instructions
+    // Arm64 instructions
     // -----------------------------------------------------------------------
     uint32_t A64_B_COND(uint32_t cc, uint32_t offset);
     uint32_t A64_RET(uint32_t Rn);
@@ -287,4 +287,4 @@
 
 }; // namespace android
 
-#endif //ANDROID_AARCH64ASSEMBLER_H
+#endif //ANDROID_ARM64ASSEMBLER_H
diff --git a/libpixelflinger/codeflinger/Aarch64Disassembler.cpp b/libpixelflinger/codeflinger/Arm64Disassembler.cpp
similarity index 99%
rename from libpixelflinger/codeflinger/Aarch64Disassembler.cpp
rename to libpixelflinger/codeflinger/Arm64Disassembler.cpp
index 4bb97b4..70f1ff1 100644
--- a/libpixelflinger/codeflinger/Aarch64Disassembler.cpp
+++ b/libpixelflinger/codeflinger/Arm64Disassembler.cpp
@@ -267,7 +267,7 @@
     return;
 }
 
-int aarch64_disassemble(uint32_t code, char* instr)
+int arm64_disassemble(uint32_t code, char* instr)
 {
     uint32_t i;
     char token[256];
diff --git a/libpixelflinger/codeflinger/Aarch64Disassembler.h b/libpixelflinger/codeflinger/Arm64Disassembler.h
similarity index 89%
rename from libpixelflinger/codeflinger/Aarch64Disassembler.h
rename to libpixelflinger/codeflinger/Arm64Disassembler.h
index 177d692..86f3aba 100644
--- a/libpixelflinger/codeflinger/Aarch64Disassembler.h
+++ b/libpixelflinger/codeflinger/Arm64Disassembler.h
@@ -26,10 +26,10 @@
  * SUCH DAMAGE.
  */
 
-#ifndef ANDROID_AARCH64DISASSEMBLER_H
-#define ANDROID_AARCH64DISASSEMBLER_H
+#ifndef ANDROID_ARM64DISASSEMBLER_H
+#define ANDROID_ARM64DISASSEMBLER_H
 
 #include <inttypes.h>
-int aarch64_disassemble(uint32_t code, char* instr);
+int arm64_disassemble(uint32_t code, char* instr);
 
-#endif //ANDROID_AARCH64ASSEMBLER_H
+#endif //ANDROID_ARM64ASSEMBLER_H
diff --git a/libpixelflinger/codeflinger/GGLAssembler.cpp b/libpixelflinger/codeflinger/GGLAssembler.cpp
index 7f088db..2422d7b 100644
--- a/libpixelflinger/codeflinger/GGLAssembler.cpp
+++ b/libpixelflinger/codeflinger/GGLAssembler.cpp
@@ -901,7 +901,7 @@
         AND( AL, 0, d, s, imm(mask) );
         return;
     }
-    else if (getCodegenArch() == CODEGEN_ARCH_AARCH64) {
+    else if (getCodegenArch() == CODEGEN_ARCH_ARM64) {
         AND( AL, 0, d, s, imm(mask) );
         return;
     }
diff --git a/libpixelflinger/scanline.cpp b/libpixelflinger/scanline.cpp
index bc774f3..aa23ca6 100644
--- a/libpixelflinger/scanline.cpp
+++ b/libpixelflinger/scanline.cpp
@@ -34,7 +34,7 @@
 #if defined(__arm__)
 #include "codeflinger/ARMAssembler.h"
 #elif defined(__aarch64__)
-#include "codeflinger/Aarch64Assembler.h"
+#include "codeflinger/Arm64Assembler.h"
 #elif defined(__mips__)
 #include "codeflinger/MIPSAssembler.h"
 #endif
@@ -128,8 +128,8 @@
 extern "C" void scanline_col32cb16blend_neon(uint16_t *dst, uint32_t *col, size_t ct);
 extern "C" void scanline_col32cb16blend_arm(uint16_t *dst, uint32_t col, size_t ct);
 #elif defined(__aarch64__)
-extern "C" void scanline_t32cb16blend_aarch64(uint16_t*, uint32_t*, size_t);
-extern "C" void scanline_col32cb16blend_aarch64(uint16_t *dst, uint32_t col, size_t ct);
+extern "C" void scanline_t32cb16blend_arm64(uint16_t*, uint32_t*, size_t);
+extern "C" void scanline_col32cb16blend_arm64(uint16_t *dst, uint32_t col, size_t ct);
 #elif defined(__mips__)
 extern "C" void scanline_t32cb16blend_mips(uint16_t*, uint32_t*, size_t);
 #endif
@@ -405,7 +405,7 @@
 #if defined(__mips__)
         GGLAssembler assembler( new ArmToMipsAssembler(a) );
 #elif defined(__aarch64__)
-        GGLAssembler assembler( new ArmToAarch64Assembler(a) );
+        GGLAssembler assembler( new ArmToArm64Assembler(a) );
 #endif
         // generate the scanline code for the given needs
         int err = assembler.scanline(c->state.needs, c);
@@ -2098,7 +2098,7 @@
     scanline_col32cb16blend_arm(dst, GGL_RGBA_TO_HOST(c->packed8888), ct);
 #endif // defined(__ARM_HAVE_NEON) && BYTE_ORDER == LITTLE_ENDIAN
 #elif ((ANDROID_CODEGEN >= ANDROID_CODEGEN_ASM) && defined(__aarch64__))
-    scanline_col32cb16blend_aarch64(dst, GGL_RGBA_TO_HOST(c->packed8888), ct);
+    scanline_col32cb16blend_arm64(dst, GGL_RGBA_TO_HOST(c->packed8888), ct);
 #else
     uint32_t s = GGL_RGBA_TO_HOST(c->packed8888);
     int sA = (s>>24);
@@ -2186,7 +2186,7 @@
 #ifdef __arm__
     scanline_t32cb16blend_arm(dst, src, ct);
 #elif defined(__aarch64__)
-    scanline_t32cb16blend_aarch64(dst, src, ct);
+    scanline_t32cb16blend_arm64(dst, src, ct);
 #elif defined(__mips__)
     scanline_t32cb16blend_mips(dst, src, ct);
 #endif
diff --git a/libpixelflinger/tests/arch-aarch64/Android.mk b/libpixelflinger/tests/arch-aarch64/Android.mk
deleted file mode 100644
index f096491..0000000
--- a/libpixelflinger/tests/arch-aarch64/Android.mk
+++ /dev/null
@@ -1,3 +0,0 @@
-ifeq ($(TARGET_ARCH),aarch64)
-include $(all-subdir-makefiles)
-endif
diff --git a/libpixelflinger/tests/arch-arm64/Android.mk b/libpixelflinger/tests/arch-arm64/Android.mk
new file mode 100644
index 0000000..ca58b4b
--- /dev/null
+++ b/libpixelflinger/tests/arch-arm64/Android.mk
@@ -0,0 +1,3 @@
+ifeq ($(TARGET_ARCH),arm64)
+include $(all-subdir-makefiles)
+endif
diff --git a/libpixelflinger/tests/arch-aarch64/assembler/Android.mk b/libpixelflinger/tests/arch-arm64/assembler/Android.mk
similarity index 75%
rename from libpixelflinger/tests/arch-aarch64/assembler/Android.mk
rename to libpixelflinger/tests/arch-arm64/assembler/Android.mk
index 10e06c4..36db49c 100644
--- a/libpixelflinger/tests/arch-aarch64/assembler/Android.mk
+++ b/libpixelflinger/tests/arch-arm64/assembler/Android.mk
@@ -2,7 +2,7 @@
 include $(CLEAR_VARS)
 
 LOCAL_SRC_FILES:= \
-    aarch64_assembler_test.cpp\
+    arm64_assembler_test.cpp\
     asm_test_jacket.S
 
 LOCAL_SHARED_LIBRARIES := \
@@ -12,7 +12,7 @@
 LOCAL_C_INCLUDES := \
     system/core/libpixelflinger
 
-LOCAL_MODULE:= test-pixelflinger-aarch64-assembler-test
+LOCAL_MODULE:= test-pixelflinger-arm64-assembler-test
 
 LOCAL_MODULE_TAGS := tests
 
diff --git a/libpixelflinger/tests/arch-aarch64/assembler/aarch64_assembler_test.cpp b/libpixelflinger/tests/arch-arm64/assembler/arm64_assembler_test.cpp
similarity index 99%
rename from libpixelflinger/tests/arch-aarch64/assembler/aarch64_assembler_test.cpp
rename to libpixelflinger/tests/arch-arm64/assembler/arm64_assembler_test.cpp
index d3e57b3..84381d5 100644
--- a/libpixelflinger/tests/arch-aarch64/assembler/aarch64_assembler_test.cpp
+++ b/libpixelflinger/tests/arch-arm64/assembler/arm64_assembler_test.cpp
@@ -40,7 +40,7 @@
 #include <inttypes.h>
 
 #include "codeflinger/ARMAssemblerInterface.h"
-#include "codeflinger/Aarch64Assembler.h"
+#include "codeflinger/Arm64Assembler.h"
 using namespace android;
 
 #define TESTS_DATAOP_ENABLE             1
@@ -712,7 +712,7 @@
 {
     uint32_t i;
 
-    /* Allocate memory to store instructions generated by ArmToAarch64Assembler */
+    /* Allocate memory to store instructions generated by ArmToArm64Assembler */
     {
         int fd = ashmem_create_region("code cache", instrMemSize);
         if(fd < 0)
@@ -723,7 +723,7 @@
                                 MAP_PRIVATE, fd, 0);
     }
 
-    ArmToAarch64Assembler a64asm(instrMem);
+    ArmToArm64Assembler a64asm(instrMem);
 
     if(TESTS_DATAOP_ENABLE)
     {
diff --git a/libpixelflinger/tests/arch-aarch64/assembler/asm_test_jacket.S b/libpixelflinger/tests/arch-arm64/assembler/asm_test_jacket.S
similarity index 100%
rename from libpixelflinger/tests/arch-aarch64/assembler/asm_test_jacket.S
rename to libpixelflinger/tests/arch-arm64/assembler/asm_test_jacket.S
diff --git a/libpixelflinger/tests/arch-aarch64/col32cb16blend/Android.mk b/libpixelflinger/tests/arch-arm64/col32cb16blend/Android.mk
similarity index 67%
rename from libpixelflinger/tests/arch-aarch64/col32cb16blend/Android.mk
rename to libpixelflinger/tests/arch-arm64/col32cb16blend/Android.mk
index 7445fc8..ac890c7 100644
--- a/libpixelflinger/tests/arch-aarch64/col32cb16blend/Android.mk
+++ b/libpixelflinger/tests/arch-arm64/col32cb16blend/Android.mk
@@ -3,13 +3,13 @@
 
 LOCAL_SRC_FILES:= \
     col32cb16blend_test.c \
-    ../../../arch-aarch64/col32cb16blend.S
+    ../../../arch-arm64/col32cb16blend.S
 
 LOCAL_SHARED_LIBRARIES :=
 
 LOCAL_C_INCLUDES :=
 
-LOCAL_MODULE:= test-pixelflinger-aarch64-col32cb16blend
+LOCAL_MODULE:= test-pixelflinger-arm64-col32cb16blend
 
 LOCAL_MODULE_TAGS := tests
 
diff --git a/libpixelflinger/tests/arch-aarch64/col32cb16blend/col32cb16blend_test.c b/libpixelflinger/tests/arch-arm64/col32cb16blend/col32cb16blend_test.c
similarity index 95%
rename from libpixelflinger/tests/arch-aarch64/col32cb16blend/col32cb16blend_test.c
rename to libpixelflinger/tests/arch-arm64/col32cb16blend/col32cb16blend_test.c
index f057884..c6a3017 100644
--- a/libpixelflinger/tests/arch-aarch64/col32cb16blend/col32cb16blend_test.c
+++ b/libpixelflinger/tests/arch-arm64/col32cb16blend/col32cb16blend_test.c
@@ -60,7 +60,7 @@
     {"Count 10, Src=Rand, Dst=Rand", 0x12345678, 0x9ABC, 10}
 };
 
-void scanline_col32cb16blend_aarch64(uint16_t *dst, int32_t src, size_t count);
+void scanline_col32cb16blend_arm64(uint16_t *dst, int32_t src, size_t count);
 void scanline_col32cb16blend_c(uint16_t * dst, int32_t src, size_t count)
 {
     int srcAlpha = (src>>24);
@@ -103,7 +103,7 @@
 
 
         scanline_col32cb16blend_c(dst_c, test.src_color, test.count);
-        scanline_col32cb16blend_aarch64(dst_asm, test.src_color, test.count);
+        scanline_col32cb16blend_arm64(dst_asm, test.src_color, test.count);
 
 
         if(memcmp(dst_c, dst_asm, sizeof(dst_c)) == 0)
diff --git a/libpixelflinger/tests/arch-aarch64/disassembler/Android.mk b/libpixelflinger/tests/arch-arm64/disassembler/Android.mk
similarity index 61%
rename from libpixelflinger/tests/arch-aarch64/disassembler/Android.mk
rename to libpixelflinger/tests/arch-arm64/disassembler/Android.mk
index 376c3b7..baf4070 100644
--- a/libpixelflinger/tests/arch-aarch64/disassembler/Android.mk
+++ b/libpixelflinger/tests/arch-arm64/disassembler/Android.mk
@@ -2,15 +2,15 @@
 include $(CLEAR_VARS)
 
 LOCAL_SRC_FILES:= \
-    aarch64_diassembler_test.cpp \
-    ../../../codeflinger/Aarch64Disassembler.cpp
+    arm64_diassembler_test.cpp \
+    ../../../codeflinger/Arm64Disassembler.cpp
 
 LOCAL_SHARED_LIBRARIES :=
 
 LOCAL_C_INCLUDES := \
     system/core/libpixelflinger/codeflinger
 
-LOCAL_MODULE:= test-pixelflinger-aarch64-disassembler-test
+LOCAL_MODULE:= test-pixelflinger-arm64-disassembler-test
 
 LOCAL_MODULE_TAGS := tests
 
diff --git a/libpixelflinger/tests/arch-aarch64/disassembler/aarch64_diassembler_test.cpp b/libpixelflinger/tests/arch-arm64/disassembler/arm64_diassembler_test.cpp
similarity index 98%
rename from libpixelflinger/tests/arch-aarch64/disassembler/aarch64_diassembler_test.cpp
rename to libpixelflinger/tests/arch-arm64/disassembler/arm64_diassembler_test.cpp
index 17caee1..af3183b 100644
--- a/libpixelflinger/tests/arch-aarch64/disassembler/aarch64_diassembler_test.cpp
+++ b/libpixelflinger/tests/arch-arm64/disassembler/arm64_diassembler_test.cpp
@@ -29,7 +29,7 @@
 #include <inttypes.h>
 #include <string.h>
 
-int aarch64_disassemble(uint32_t code, char* instr);
+int arm64_disassemble(uint32_t code, char* instr);
 
 struct test_table_entry_t
 {
@@ -298,7 +298,7 @@
     {
         test_table_entry_t *test;
         test = &test_table[i];
-        aarch64_disassemble(test->code, instr);
+        arm64_disassemble(test->code, instr);
         if(strcmp(instr, test->instr) != 0)
         {
             printf("Test Failed \n"
diff --git a/libpixelflinger/tests/arch-aarch64/t32cb16blend/Android.mk b/libpixelflinger/tests/arch-arm64/t32cb16blend/Android.mk
similarity index 68%
rename from libpixelflinger/tests/arch-aarch64/t32cb16blend/Android.mk
rename to libpixelflinger/tests/arch-arm64/t32cb16blend/Android.mk
index a67f0e3..1cce1bd 100644
--- a/libpixelflinger/tests/arch-aarch64/t32cb16blend/Android.mk
+++ b/libpixelflinger/tests/arch-arm64/t32cb16blend/Android.mk
@@ -3,13 +3,13 @@
 
 LOCAL_SRC_FILES:= \
     t32cb16blend_test.c \
-    ../../../arch-aarch64/t32cb16blend.S
+    ../../../arch-arm64/t32cb16blend.S
 
 LOCAL_SHARED_LIBRARIES :=
 
 LOCAL_C_INCLUDES :=
 
-LOCAL_MODULE:= test-pixelflinger-aarch64-t32cb16blend
+LOCAL_MODULE:= test-pixelflinger-arm64-t32cb16blend
 
 LOCAL_MODULE_TAGS := tests
 
diff --git a/libpixelflinger/tests/arch-aarch64/t32cb16blend/t32cb16blend_test.c b/libpixelflinger/tests/arch-arm64/t32cb16blend/t32cb16blend_test.c
similarity index 96%
rename from libpixelflinger/tests/arch-aarch64/t32cb16blend/t32cb16blend_test.c
rename to libpixelflinger/tests/arch-arm64/t32cb16blend/t32cb16blend_test.c
index bcde3e6..afb36fb 100644
--- a/libpixelflinger/tests/arch-aarch64/t32cb16blend/t32cb16blend_test.c
+++ b/libpixelflinger/tests/arch-arm64/t32cb16blend/t32cb16blend_test.c
@@ -61,7 +61,7 @@
 
 };
 
-void scanline_t32cb16blend_aarch64(uint16_t*, uint32_t*, size_t);
+void scanline_t32cb16blend_arm64(uint16_t*, uint32_t*, size_t);
 void scanline_t32cb16blend_c(uint16_t * dst, uint32_t* src, size_t count)
 {
     while (count--)
@@ -112,7 +112,7 @@
         }
 
         scanline_t32cb16blend_c(dst_c,src,test.count);
-        scanline_t32cb16blend_aarch64(dst_asm,src,test.count);
+        scanline_t32cb16blend_arm64(dst_asm,src,test.count);
 
 
         if(memcmp(dst_c, dst_asm, sizeof(dst_c)) == 0)
diff --git a/libpixelflinger/tests/codegen/codegen.cpp b/libpixelflinger/tests/codegen/codegen.cpp
index e8a4f5e..e9f6c61 100644
--- a/libpixelflinger/tests/codegen/codegen.cpp
+++ b/libpixelflinger/tests/codegen/codegen.cpp
@@ -10,7 +10,7 @@
 #include "codeflinger/GGLAssembler.h"
 #include "codeflinger/ARMAssembler.h"
 #include "codeflinger/MIPSAssembler.h"
-#include "codeflinger/Aarch64Assembler.h"
+#include "codeflinger/Arm64Assembler.h"
 
 #if defined(__arm__) || defined(__mips__) || defined(__aarch64__)
 #   define ANDROID_ARM_CODEGEN  1
@@ -57,7 +57,7 @@
 #endif
 
 #if defined(__aarch64__)
-    GGLAssembler assembler( new ArmToAarch64Assembler(a) );
+    GGLAssembler assembler( new ArmToArm64Assembler(a) );
 #endif
 
     int err = assembler.scanline(needs, (context_t*)c);
@@ -66,7 +66,7 @@
     }
     gglUninit(c);
 #else
-    printf("This test runs only on ARM, Aarch64 or MIPS\n");
+    printf("This test runs only on ARM, Arm64 or MIPS\n");
 #endif
 }
 
diff --git a/libpixelflinger/tests/gglmul/gglmul_test.cpp b/libpixelflinger/tests/gglmul/gglmul_test.cpp
index 103e4e9..073368e 100644
--- a/libpixelflinger/tests/gglmul/gglmul_test.cpp
+++ b/libpixelflinger/tests/gglmul/gglmul_test.cpp
@@ -225,8 +225,6 @@
 }
 
 // gglMulii() tests
-const int32_t INT32_MAX = 0x7FFFFFFF;
-const int32_t INT32_MIN = 0x80000000;
 
 struct gglMulii_test_t
 {
diff --git a/libsparse/output_file.c b/libsparse/output_file.c
index a28b0a5..e63c4a9 100644
--- a/libsparse/output_file.c
+++ b/libsparse/output_file.c
@@ -18,6 +18,7 @@
 #define _LARGEFILE64_SOURCE 1
 
 #include <fcntl.h>
+#include <inttypes.h>
 #include <limits.h>
 #include <stdbool.h>
 #include <stddef.h>
@@ -342,7 +343,7 @@
 	int ret, chunk;
 
 	if (skip_len % out->block_size) {
-		error("don't care size %llu is not a multiple of the block size %u",
+		error("don't care size %"PRIi64" is not a multiple of the block size %u",
 				skip_len, out->block_size);
 		return -1;
 	}
diff --git a/libsysutils/Android.mk b/libsysutils/Android.mk
index 1d396b2..1451b0d 100644
--- a/libsysutils/Android.mk
+++ b/libsysutils/Android.mk
@@ -16,7 +16,7 @@
 
 LOCAL_MODULE:= libsysutils
 
-LOCAL_C_INCLUDES := $(KERNEL_HEADERS)
+LOCAL_C_INCLUDES :=
 
 LOCAL_CFLAGS :=
 
diff --git a/libsysutils/src/SocketClient.cpp b/libsysutils/src/SocketClient.cpp
index ae0e077..3625d93 100644
--- a/libsysutils/src/SocketClient.cpp
+++ b/libsysutils/src/SocketClient.cpp
@@ -71,7 +71,7 @@
             ret = asprintf(&buf, "%d %s", code, msg);
         }
     }
-    /* Send the zero-terminated message */
+    // Send the zero-terminated message
     if (ret != -1) {
         ret = sendMsg(buf);
         free(buf);
@@ -79,22 +79,25 @@
     return ret;
 }
 
-/** send 3-digit code, null, binary-length, binary data */
+// send 3-digit code, null, binary-length, binary data
 int SocketClient::sendBinaryMsg(int code, const void *data, int len) {
 
-    /* 4 bytes for the code & null + 4 bytes for the len */
+    // 4 bytes for the code & null + 4 bytes for the len
     char buf[8];
-    /* Write the code */
+    // Write the code
     snprintf(buf, 4, "%.3d", code);
-    /* Write the len */
+    // Write the len
     uint32_t tmp = htonl(len);
     memcpy(buf + 4, &tmp, sizeof(uint32_t));
 
+    struct iovec vec[2];
+    vec[0].iov_base = (void *) buf;
+    vec[0].iov_len = sizeof(buf);
+    vec[1].iov_base = (void *) data;
+    vec[1].iov_len = len;
+
     pthread_mutex_lock(&mWriteMutex);
-    int result = sendDataLocked(buf, sizeof(buf));
-    if (result == 0 && len > 0) {
-        result = sendDataLocked(data, len);
-    }
+    int result = sendDataLockedv(vec, (len > 0) ? 2 : 1);
     pthread_mutex_unlock(&mWriteMutex);
 
     return result;
@@ -147,33 +150,51 @@
 }
 
 int SocketClient::sendData(const void *data, int len) {
+    struct iovec vec[1];
+    vec[0].iov_base = (void *) data;
+    vec[0].iov_len = len;
 
     pthread_mutex_lock(&mWriteMutex);
-    int rc = sendDataLocked(data, len);
+    int rc = sendDataLockedv(vec, 1);
     pthread_mutex_unlock(&mWriteMutex);
 
     return rc;
 }
 
-int SocketClient::sendDataLocked(const void *data, int len) {
-    int rc = 0;
-    const char *p = (const char*) data;
-    int brtw = len;
+int SocketClient::sendDatav(struct iovec *iov, int iovcnt) {
+    pthread_mutex_lock(&mWriteMutex);
+    int rc = sendDataLockedv(iov, iovcnt);
+    pthread_mutex_unlock(&mWriteMutex);
+
+    return rc;
+}
+
+int SocketClient::sendDataLockedv(struct iovec *iov, int iovcnt) {
 
     if (mSocket < 0) {
         errno = EHOSTUNREACH;
         return -1;
     }
 
-    if (len == 0) {
+    if (iovcnt <= 0) {
         return 0;
     }
 
-    while (brtw > 0) {
-        rc = send(mSocket, p, brtw, MSG_NOSIGNAL);
+    int current = 0;
+
+    for (;;) {
+        ssize_t rc = writev(mSocket, iov + current, iovcnt - current);
         if (rc > 0) {
-            p += rc;
-            brtw -= rc;
+            size_t written = rc;
+            while ((current < iovcnt) && (written >= iov[current].iov_len)) {
+                written -= iov[current].iov_len;
+                current++;
+            }
+            if (current == iovcnt) {
+                break;
+            }
+            iov[current].iov_base = (char *)iov[current].iov_base + written;
+            iov[current].iov_len -= written;
             continue;
         }
 
diff --git a/libsysutils/src/SocketListener.cpp b/libsysutils/src/SocketListener.cpp
index 0296910..5c75206 100644
--- a/libsysutils/src/SocketListener.cpp
+++ b/libsysutils/src/SocketListener.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2008 The Android Open Source Project
+ * Copyright (C) 2008-2014 The Android Open Source Project
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -29,6 +29,9 @@
 #include <sysutils/SocketListener.h>
 #include <sysutils/SocketClient.h>
 
+#define CtrlPipe_Shutdown 0
+#define CtrlPipe_Wakeup   1
+
 SocketListener::SocketListener(const char *socketName, bool listen) {
     init(socketName, -1, listen, false);
 }
@@ -101,7 +104,7 @@
 }
 
 int SocketListener::stopListener() {
-    char c = 0;
+    char c = CtrlPipe_Shutdown;
     int  rc;
 
     rc = TEMP_FAILURE_RETRY(write(mCtrlPipe[1], &c, 1));
@@ -143,7 +146,7 @@
 
 void SocketListener::runListener() {
 
-    SocketClientCollection *pendingList = new SocketClientCollection();
+    SocketClientCollection pendingList;
 
     while(1) {
         SocketClientCollection::iterator it;
@@ -164,10 +167,12 @@
 
         pthread_mutex_lock(&mClientsLock);
         for (it = mClients->begin(); it != mClients->end(); ++it) {
+            // NB: calling out to an other object with mClientsLock held (safe)
             int fd = (*it)->getSocket();
             FD_SET(fd, &read_fds);
-            if (fd > max)
+            if (fd > max) {
                 max = fd;
+            }
         }
         pthread_mutex_unlock(&mClientsLock);
         SLOGV("mListen=%d, max=%d, mSocketName=%s", mListen, max, mSocketName);
@@ -180,8 +185,14 @@
         } else if (!rc)
             continue;
 
-        if (FD_ISSET(mCtrlPipe[0], &read_fds))
-            break;
+        if (FD_ISSET(mCtrlPipe[0], &read_fds)) {
+            char c = CtrlPipe_Shutdown;
+            TEMP_FAILURE_RETRY(read(mCtrlPipe[0], &c, 1));
+            if (c == CtrlPipe_Shutdown) {
+                break;
+            }
+            continue;
+        }
         if (mListen && FD_ISSET(mSock, &read_fds)) {
             struct sockaddr addr;
             socklen_t alen;
@@ -203,53 +214,111 @@
         }
 
         /* Add all active clients to the pending list first */
-        pendingList->clear();
+        pendingList.clear();
         pthread_mutex_lock(&mClientsLock);
         for (it = mClients->begin(); it != mClients->end(); ++it) {
-            int fd = (*it)->getSocket();
+            SocketClient* c = *it;
+            // NB: calling out to an other object with mClientsLock held (safe)
+            int fd = c->getSocket();
             if (FD_ISSET(fd, &read_fds)) {
-                pendingList->push_back(*it);
+                pendingList.push_back(c);
+                c->incRef();
             }
         }
         pthread_mutex_unlock(&mClientsLock);
 
         /* Process the pending list, since it is owned by the thread,
          * there is no need to lock it */
-        while (!pendingList->empty()) {
+        while (!pendingList.empty()) {
             /* Pop the first item from the list */
-            it = pendingList->begin();
+            it = pendingList.begin();
             SocketClient* c = *it;
-            pendingList->erase(it);
-            /* Process it, if false is returned and our sockets are
-             * connection-based, remove and destroy it */
-            if (!onDataAvailable(c) && mListen) {
-                /* Remove the client from our array */
-                SLOGV("going to zap %d for %s", c->getSocket(), mSocketName);
-                pthread_mutex_lock(&mClientsLock);
-                for (it = mClients->begin(); it != mClients->end(); ++it) {
-                    if (*it == c) {
-                        mClients->erase(it);
-                        break;
-                    }
-                }
-                pthread_mutex_unlock(&mClientsLock);
-                /* Remove our reference to the client */
-                c->decRef();
+            pendingList.erase(it);
+            /* Process it, if false is returned, remove from list */
+            if (!onDataAvailable(c)) {
+                release(c, false);
+            }
+            c->decRef();
+        }
+    }
+}
+
+bool SocketListener::release(SocketClient* c, bool wakeup) {
+    bool ret = false;
+    /* if our sockets are connection-based, remove and destroy it */
+    if (mListen && c) {
+        /* Remove the client from our array */
+        SLOGV("going to zap %d for %s", c->getSocket(), mSocketName);
+        pthread_mutex_lock(&mClientsLock);
+        SocketClientCollection::iterator it;
+        for (it = mClients->begin(); it != mClients->end(); ++it) {
+            if (*it == c) {
+                mClients->erase(it);
+                ret = true;
+                break;
+            }
+        }
+        pthread_mutex_unlock(&mClientsLock);
+        if (ret) {
+            ret = c->decRef();
+            if (wakeup) {
+                char b = CtrlPipe_Wakeup;
+                TEMP_FAILURE_RETRY(write(mCtrlPipe[1], &b, 1));
             }
         }
     }
-    delete pendingList;
+    return ret;
 }
 
 void SocketListener::sendBroadcast(int code, const char *msg, bool addErrno) {
+    SocketClientCollection safeList;
+
+    /* Add all active clients to the safe list first */
+    safeList.clear();
     pthread_mutex_lock(&mClientsLock);
     SocketClientCollection::iterator i;
 
     for (i = mClients->begin(); i != mClients->end(); ++i) {
-        // broadcasts are unsolicited and should not include a cmd number
-        if ((*i)->sendMsg(code, msg, addErrno, false)) {
-            SLOGW("Error sending broadcast (%s)", strerror(errno));
-        }
+        SocketClient* c = *i;
+        c->incRef();
+        safeList.push_back(c);
     }
     pthread_mutex_unlock(&mClientsLock);
+
+    while (!safeList.empty()) {
+        /* Pop the first item from the list */
+        i = safeList.begin();
+        SocketClient* c = *i;
+        safeList.erase(i);
+        // broadcasts are unsolicited and should not include a cmd number
+        if (c->sendMsg(code, msg, addErrno, false)) {
+            SLOGW("Error sending broadcast (%s)", strerror(errno));
+        }
+        c->decRef();
+    }
+}
+
+void SocketListener::runOnEachSocket(SocketClientCommand *command) {
+    SocketClientCollection safeList;
+
+    /* Add all active clients to the safe list first */
+    safeList.clear();
+    pthread_mutex_lock(&mClientsLock);
+    SocketClientCollection::iterator i;
+
+    for (i = mClients->begin(); i != mClients->end(); ++i) {
+        SocketClient* c = *i;
+        c->incRef();
+        safeList.push_back(c);
+    }
+    pthread_mutex_unlock(&mClientsLock);
+
+    while (!safeList.empty()) {
+        /* Pop the first item from the list */
+        i = safeList.begin();
+        SocketClient* c = *i;
+        safeList.erase(i);
+        command->runSocketCommand(c);
+        c->decRef();
+    }
 }
diff --git a/libziparchive/zip_archive.cc b/libziparchive/zip_archive.cc
index 8436d49..a23d4ae 100644
--- a/libziparchive/zip_archive.cc
+++ b/libziparchive/zip_archive.cc
@@ -756,7 +756,7 @@
   }
 
   const off64_t data_offset = local_header_offset + kLFHLen + lfhNameLen + lfhExtraLen;
-  if (data_offset >= cd_offset) {
+  if (data_offset > cd_offset) {
     ALOGW("Zip: bad data offset %lld in zip", (off64_t) data_offset);
     return kInvalidOffset;
   }
@@ -1021,6 +1021,13 @@
     return kIoError;
   }
 
+  // Don't attempt to map a region of length 0. We still need the
+  // ftruncate() though, since the API guarantees that we will truncate
+  // the file to the end of the uncompressed output.
+  if (declared_length == 0) {
+      return 0;
+  }
+
   android::FileMap* map  = MapFileSegment(fd, current_offset, declared_length,
                                           false, kTempMappingFileName);
   if (map == NULL) {
diff --git a/libziparchive/zip_archive_test.cc b/libziparchive/zip_archive_test.cc
index 022be5b..3082216 100644
--- a/libziparchive/zip_archive_test.cc
+++ b/libziparchive/zip_archive_test.cc
@@ -140,8 +140,45 @@
   CloseArchive(handle);
 }
 
+TEST(ziparchive, EmptyEntries) {
+  char temp_file_pattern[] = "empty_entries_test_XXXXXX";
+  int fd = mkstemp(temp_file_pattern);
+  ASSERT_NE(-1, fd);
+  const uint32_t data[] = {
+      0x04034b50, 0x0000000a, 0x63600000, 0x00004438, 0x00000000, 0x00000000,
+      0x00090000, 0x6d65001c, 0x2e797470, 0x55747874, 0x03000954, 0x52e25c13,
+      0x52e25c24, 0x000b7875, 0x42890401, 0x88040000, 0x50000013, 0x1e02014b,
+      0x00000a03, 0x60000000, 0x00443863, 0x00000000, 0x00000000, 0x09000000,
+      0x00001800, 0x00000000, 0xa0000000, 0x00000081, 0x706d6500, 0x742e7974,
+      0x54557478, 0x13030005, 0x7552e25c, 0x01000b78, 0x00428904, 0x13880400,
+      0x4b500000, 0x00000605, 0x00010000, 0x004f0001, 0x00430000, 0x00000000 };
+  const ssize_t file_size = 168;
+  ASSERT_EQ(file_size, TEMP_FAILURE_RETRY(write(fd, data, file_size)));
+
+  ZipArchiveHandle handle;
+  ASSERT_EQ(0, OpenArchiveFd(fd, "EmptyEntriesTest", &handle));
+
+  ZipEntry entry;
+  ASSERT_EQ(0, FindEntry(handle, "empty.txt", &entry));
+  ASSERT_EQ(static_cast<uint32_t>(0), entry.uncompressed_length);
+  uint8_t buffer[1];
+  ASSERT_EQ(0, ExtractToMemory(handle, &entry, buffer, 1));
+
+  char output_file_pattern[] = "empty_entries_output_XXXXXX";
+  int output_fd = mkstemp(output_file_pattern);
+  ASSERT_NE(-1, output_fd);
+  ASSERT_EQ(0, ExtractEntryToFile(handle, &entry, output_fd));
+
+  struct stat stat_buf;
+  ASSERT_EQ(0, fstat(output_fd, &stat_buf));
+  ASSERT_EQ(0, stat_buf.st_size);
+
+  close(fd);
+  close(output_fd);
+}
+
 TEST(ziparchive, ExtractToFile) {
-  char kTempFilePattern[] = "zip_archive_test_XXXXXX";
+  char kTempFilePattern[] = "zip_archive_input_XXXXXX";
   int fd = mkstemp(kTempFilePattern);
   ASSERT_NE(-1, fd);
   const uint8_t data[8] = { '1', '2', '3', '4', '5', '6', '7', '8' };
diff --git a/logcat/Android.mk b/logcat/Android.mk
index 7b8eb01..b5e27eb 100644
--- a/logcat/Android.mk
+++ b/logcat/Android.mk
@@ -1,4 +1,4 @@
-# Copyright 2006 The Android Open Source Project
+# Copyright 2006-2014 The Android Open Source Project
 
 LOCAL_PATH:= $(call my-dir)
 include $(CLEAR_VARS)
@@ -10,3 +10,5 @@
 LOCAL_MODULE:= logcat
 
 include $(BUILD_EXECUTABLE)
+
+include $(call first-makefiles-under,$(LOCAL_PATH))
diff --git a/logcat/logcat.cpp b/logcat/logcat.cpp
index b6ca171..3c33938 100644
--- a/logcat/logcat.cpp
+++ b/logcat/logcat.cpp
@@ -1,25 +1,26 @@
-// Copyright 2006-2013 The Android Open Source Project
+// Copyright 2006-2014 The Android Open Source Project
 
+#include <assert.h>
+#include <ctype.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdarg.h>
+#include <string.h>
+#include <signal.h>
+#include <time.h>
+#include <unistd.h>
+#include <sys/socket.h>
+#include <sys/stat.h>
+#include <arpa/inet.h>
+
+#include <cutils/sockets.h>
 #include <log/log.h>
 #include <log/logger.h>
 #include <log/logd.h>
 #include <log/logprint.h>
 #include <log/event_tag_map.h>
-#include <cutils/sockets.h>
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <stdarg.h>
-#include <string.h>
-#include <unistd.h>
-#include <fcntl.h>
-#include <time.h>
-#include <errno.h>
-#include <assert.h>
-#include <ctype.h>
-#include <sys/socket.h>
-#include <sys/stat.h>
-#include <arpa/inet.h>
 
 #define DEFAULT_LOG_ROTATE_SIZE_KBYTES 16
 #define DEFAULT_MAX_ROTATED_LOGS 4
@@ -222,6 +223,7 @@
                     "  -c              clear (flush) the entire log and exit\n"
                     "  -d              dump the log and then exit (don't block)\n"
                     "  -t <count>      print only the most recent <count> lines (implies -d)\n"
+                    "  -T <count>      print only the most recent <count> lines (does not imply -d)\n"
                     "  -g              get the size of the log's ring buffer and exit\n"
                     "  -b <buffer>     Request alternate ring buffer, 'main', 'system', 'radio'\n"
                     "                  or 'events'. Multiple -b parameters are allowed and the\n"
@@ -284,6 +286,8 @@
     struct logger_list *logger_list;
     int tail_lines = 0;
 
+    signal(SIGPIPE, exit);
+
     g_logformat = android_log_format_new();
 
     if (argc == 2 && 0 == strcmp(argv[1], "--test")) {
@@ -299,7 +303,7 @@
     for (;;) {
         int ret;
 
-        ret = getopt(argc, argv, "cdt:gsQf:r::n:v:b:B");
+        ret = getopt(argc, argv, "cdt:T:gsQf:r::n:v:b:B");
 
         if (ret < 0) {
             break;
@@ -322,6 +326,8 @@
 
             case 't':
                 mode = O_RDONLY | O_NDELAY;
+                /* FALLTHRU */
+            case 'T':
                 tail_lines = atoi(optarg);
             break;
 
diff --git a/logcat/tests/Android.mk b/logcat/tests/Android.mk
new file mode 100644
index 0000000..bdaec14
--- /dev/null
+++ b/logcat/tests/Android.mk
@@ -0,0 +1,46 @@
+#
+# Copyright (C) 2013-2014 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+LOCAL_PATH := $(call my-dir)
+
+# -----------------------------------------------------------------------------
+# Unit tests.
+# -----------------------------------------------------------------------------
+
+test_module := logcat-unit-tests
+test_tags := tests
+
+test_c_flags := \
+    -fstack-protector-all \
+    -g \
+    -Wall -Wextra \
+    -Werror \
+    -fno-builtin \
+
+test_src_files := \
+    logcat_test.cpp \
+
+# Build tests for the device (with .so). Run with:
+#   adb shell /data/nativetest/logcat-unit-tests/logcat-unit-tests
+include $(CLEAR_VARS)
+LOCAL_MODULE := $(test_module)
+LOCAL_MODULE_TAGS := $(test_tags)
+LOCAL_ADDITIONAL_DEPENDENCIES := $(LOCAL_PATH)/Android.mk
+LOCAL_CFLAGS += $(test_c_flags)
+LOCAL_LDLIBS := -lpthread
+LOCAL_SHARED_LIBRARIES := liblog
+LOCAL_SRC_FILES := $(test_src_files)
+include $(BUILD_NATIVE_TEST)
diff --git a/logcat/tests/logcat_test.cpp b/logcat/tests/logcat_test.cpp
new file mode 100644
index 0000000..f963a3a
--- /dev/null
+++ b/logcat/tests/logcat_test.cpp
@@ -0,0 +1,443 @@
+/*
+ * Copyright (C) 2013-2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <signal.h>
+#include <stdio.h>
+#include <gtest/gtest.h>
+#include <log/log.h>
+#include <log/logger.h>
+#include <log/log_read.h>
+
+// enhanced version of LOG_FAILURE_RETRY to add support for EAGAIN and
+// non-syscall libs. Since we are only using this in the emergency of
+// a signal to stuff a terminating code into the logs, we will spin rather
+// than try a usleep.
+#define LOG_FAILURE_RETRY(exp) ({  \
+    typeof (exp) _rc;              \
+    do {                           \
+        _rc = (exp);               \
+    } while (((_rc == -1)          \
+           && ((errno == EINTR)    \
+            || (errno == EAGAIN))) \
+          || (_rc == -EINTR)       \
+          || (_rc == -EAGAIN));    \
+    _rc; })
+
+static const char begin[] = "--------- beginning of ";
+
+TEST(logcat, sorted_order) {
+    FILE *fp;
+
+    ASSERT_EQ(0, NULL == (fp = popen(
+      "logcat -v time -b radio -b events -b system -b main -d 2>/dev/null",
+      "r")));
+
+    class timestamp {
+    private:
+        int month;
+        int day;
+        int hour;
+        int minute;
+        int second;
+        int millisecond;
+        bool ok;
+
+    public:
+        void init(const char *buffer)
+        {
+            ok = false;
+            if (buffer != NULL) {
+                ok = sscanf(buffer, "%d-%d %d:%d:%d.%d ",
+                    &month, &day, &hour, &minute, &second, &millisecond) == 6;
+            }
+        }
+
+        timestamp(const char *buffer)
+        {
+            init(buffer);
+        }
+
+        bool operator< (timestamp &T)
+        {
+            return !ok || !T.ok
+             || (month < T.month)
+             || ((month == T.month)
+              && ((day < T.day)
+               || ((day == T.day)
+                && ((hour < T.hour)
+                 || ((hour == T.hour)
+                  && ((minute < T.minute)
+                   || ((minute == T.minute)
+                    && ((second < T.second)
+                     || ((second == T.second)
+                      && (millisecond < T.millisecond))))))))));
+        }
+
+        bool valid(void)
+        {
+            return ok;
+        }
+    } last(NULL);
+
+    char buffer[5120];
+
+    int count = 0;
+
+    while (fgets(buffer, sizeof(buffer), fp)) {
+        if (!strncmp(begin, buffer, sizeof(begin) - 1)) {
+            continue;
+        }
+        if (!last.valid()) {
+            last.init(buffer);
+        }
+        timestamp next(buffer);
+        ASSERT_EQ(0, next < last);
+        if (next.valid()) {
+            last.init(buffer);
+        }
+        ++count;
+    }
+
+    pclose(fp);
+
+    ASSERT_LT(100, count);
+}
+
+TEST(logcat, buckets) {
+    FILE *fp;
+
+    ASSERT_EQ(0, NULL == (fp = popen(
+      "logcat -b radio -b events -b system -b main -d 2>/dev/null",
+      "r")));
+
+    char buffer[5120];
+
+    int ids = 0;
+    int count = 0;
+
+    while (fgets(buffer, sizeof(buffer), fp)) {
+        if (!strncmp(begin, buffer, sizeof(begin) - 1)) {
+            while (char *cp = strrchr(buffer, '\n')) {
+                *cp = '\0';
+            }
+            log_id_t id = android_name_to_log_id(buffer + sizeof(begin) - 1);
+            ids |= 1 << id;
+            ++count;
+        }
+    }
+
+    pclose(fp);
+
+    ASSERT_EQ(15, ids);
+
+    ASSERT_EQ(4, count);
+}
+
+TEST(logcat, tail_3) {
+    FILE *fp;
+
+    ASSERT_EQ(0, NULL == (fp = popen(
+      "logcat -v long -b radio -b events -b system -b main -t 3 2>/dev/null",
+      "r")));
+
+    char buffer[5120];
+
+    int count = 0;
+
+    while (fgets(buffer, sizeof(buffer), fp)) {
+        if ((buffer[0] == '[') && (buffer[1] == ' ')
+         && isdigit(buffer[2]) && isdigit(buffer[3])
+         && (buffer[4] == '-')) {
+            ++count;
+        }
+    }
+
+    pclose(fp);
+
+    ASSERT_EQ(3, count);
+}
+
+TEST(logcat, tail_10) {
+    FILE *fp;
+
+    ASSERT_EQ(0, NULL == (fp = popen(
+      "logcat -v long -b radio -b events -b system -b main -t 10 2>/dev/null",
+      "r")));
+
+    char buffer[5120];
+
+    int count = 0;
+
+    while (fgets(buffer, sizeof(buffer), fp)) {
+        if ((buffer[0] == '[') && (buffer[1] == ' ')
+         && isdigit(buffer[2]) && isdigit(buffer[3])
+         && (buffer[4] == '-')) {
+            ++count;
+        }
+    }
+
+    pclose(fp);
+
+    ASSERT_EQ(10, count);
+}
+
+TEST(logcat, tail_100) {
+    FILE *fp;
+
+    ASSERT_EQ(0, NULL == (fp = popen(
+      "logcat -v long -b radio -b events -b system -b main -t 100 2>/dev/null",
+      "r")));
+
+    char buffer[5120];
+
+    int count = 0;
+
+    while (fgets(buffer, sizeof(buffer), fp)) {
+        if ((buffer[0] == '[') && (buffer[1] == ' ')
+         && isdigit(buffer[2]) && isdigit(buffer[3])
+         && (buffer[4] == '-')) {
+            ++count;
+        }
+    }
+
+    pclose(fp);
+
+    ASSERT_EQ(100, count);
+}
+
+TEST(logcat, tail_1000) {
+    FILE *fp;
+
+    ASSERT_EQ(0, NULL == (fp = popen(
+      "logcat -v long -b radio -b events -b system -b main -t 1000 2>/dev/null",
+      "r")));
+
+    char buffer[5120];
+
+    int count = 0;
+
+    while (fgets(buffer, sizeof(buffer), fp)) {
+        if ((buffer[0] == '[') && (buffer[1] == ' ')
+         && isdigit(buffer[2]) && isdigit(buffer[3])
+         && (buffer[4] == '-')) {
+            ++count;
+        }
+    }
+
+    pclose(fp);
+
+    ASSERT_EQ(1000, count);
+}
+
+TEST(logcat, End_to_End) {
+    pid_t pid = getpid();
+
+    log_time ts(CLOCK_MONOTONIC);
+
+    ASSERT_LT(0, __android_log_btwrite(0, EVENT_TYPE_LONG, &ts, sizeof(ts)));
+
+    FILE *fp;
+    ASSERT_EQ(0, NULL == (fp = popen(
+      "logcat -b events -t 100 2>/dev/null",
+      "r")));
+
+    char buffer[5120];
+
+    int count = 0;
+
+    while (fgets(buffer, sizeof(buffer), fp)) {
+        int p;
+        unsigned long long t;
+
+        if ((2 != sscanf(buffer, "I/[0]     ( %d): %llu", &p, &t))
+         || (p != pid)) {
+            continue;
+        }
+
+        log_time tx((const char *) &t);
+        if (ts == tx) {
+            ++count;
+        }
+    }
+
+    pclose(fp);
+
+    ASSERT_EQ(1, count);
+}
+
+TEST(logcat, get_) {
+    FILE *fp;
+
+    ASSERT_EQ(0, NULL == (fp = popen(
+      "logcat -b radio -b events -b system -b main -g 2>/dev/null",
+      "r")));
+
+    char buffer[5120];
+
+    int count = 0;
+
+    while (fgets(buffer, sizeof(buffer), fp)) {
+        int size, consumed, max, payload;
+
+        size = consumed = max = payload = 0;
+        if ((4 == sscanf(buffer, "%*s ring buffer is %dKb (%dKb consumed),"
+                                 " max entry is %db, max payload is %db",
+                                 &size, &consumed, &max, &payload))
+         && ((size * 3) >= consumed)
+         && ((size * 1024) > max)
+         && (max > payload)) {
+            ++count;
+        }
+    }
+
+    pclose(fp);
+
+    ASSERT_EQ(4, count);
+}
+
+static void caught_blocking(int signum)
+{
+    unsigned long long v = 0xDEADBEEFA55A0000ULL;
+
+    v += getpid() & 0xFFFF;
+
+    LOG_FAILURE_RETRY(__android_log_btwrite(0, EVENT_TYPE_LONG, &v, sizeof(v)));
+}
+
+TEST(logcat, blocking) {
+    FILE *fp;
+    unsigned long long v = 0xDEADBEEFA55A0000ULL;
+
+    pid_t pid = getpid();
+
+    v += pid & 0xFFFF;
+
+    ASSERT_EQ(0, NULL == (fp = popen(
+      "( trap exit HUP QUIT INT PIPE KILL ; sleep 6; echo DONE )&"
+      " logcat -b events 2>&1",
+      "r")));
+
+    char buffer[5120];
+
+    int count = 0;
+
+    int signals = 0;
+
+    signal(SIGALRM, caught_blocking);
+    alarm(2);
+    while (fgets(buffer, sizeof(buffer), fp)) {
+        alarm(2);
+
+        ++count;
+
+        if (!strncmp(buffer, "DONE", 4)) {
+            break;
+        }
+
+        int p;
+        unsigned long long l;
+
+        if ((2 != sscanf(buffer, "I/[0] ( %u): %lld", &p, &l))
+         || (p != pid)) {
+            continue;
+        }
+
+        if (l == v) {
+            ++signals;
+            break;
+        }
+    }
+    alarm(0);
+    signal(SIGALRM, SIG_DFL);
+
+    // Generate SIGPIPE
+    fclose(fp);
+    caught_blocking(0);
+
+    pclose(fp);
+
+    ASSERT_LT(10, count);
+
+    ASSERT_EQ(1, signals);
+}
+
+static void caught_blocking_tail(int signum)
+{
+    unsigned long long v = 0xA55ADEADBEEF0000ULL;
+
+    v += getpid() & 0xFFFF;
+
+    LOG_FAILURE_RETRY(__android_log_btwrite(0, EVENT_TYPE_LONG, &v, sizeof(v)));
+}
+
+TEST(logcat, blocking_tail) {
+    FILE *fp;
+    unsigned long long v = 0xA55ADEADBEEF0000ULL;
+
+    pid_t pid = getpid();
+
+    v += pid & 0xFFFF;
+
+    ASSERT_EQ(0, NULL == (fp = popen(
+      "( trap exit HUP QUIT INT PIPE KILL ; sleep 6; echo DONE )&"
+      " logcat -b events -T 5 2>&1",
+      "r")));
+
+    char buffer[5120];
+
+    int count = 0;
+
+    int signals = 0;
+
+    signal(SIGALRM, caught_blocking_tail);
+    alarm(2);
+    while (fgets(buffer, sizeof(buffer), fp)) {
+        alarm(2);
+
+        ++count;
+
+        if (!strncmp(buffer, "DONE", 4)) {
+            break;
+        }
+
+        int p;
+        unsigned long long l;
+
+        if ((2 != sscanf(buffer, "I/[0] ( %u): %lld", &p, &l))
+         || (p != pid)) {
+            continue;
+        }
+
+        if (l == v) {
+            if (count >= 5) {
+                ++signals;
+            }
+            break;
+        }
+    }
+    alarm(0);
+    signal(SIGALRM, SIG_DFL);
+
+    /* Generate SIGPIPE */
+    fclose(fp);
+    caught_blocking_tail(0);
+
+    pclose(fp);
+
+    ASSERT_LT(5, count);
+
+    ASSERT_EQ(1, signals);
+}
diff --git a/logwrapper/logwrapper.c b/logwrapper/logwrapper.c
index db6cb4c..9e0385d 100644
--- a/logwrapper/logwrapper.c
+++ b/logwrapper/logwrapper.c
@@ -90,7 +90,8 @@
     }
 
     if (seg_fault_on_exit) {
-        *(int *)status = 0;  // causes SIGSEGV with fault_address = status
+        uintptr_t fault_address = (uintptr_t) status;
+        *(int *) fault_address = 0;  // causes SIGSEGV with fault_address = status
     }
 
     return rc;
diff --git a/rootdir/init.environ.rc.in b/rootdir/init.environ.rc.in
index d2f74c0..927c33d 100644
--- a/rootdir/init.environ.rc.in
+++ b/rootdir/init.environ.rc.in
@@ -1,7 +1,6 @@
 # set up the global environment
 on init
     export PATH /sbin:/vendor/bin:/system/sbin:/system/bin:/system/xbin
-    export LD_LIBRARY_PATH /vendor/lib:/system/lib
     export ANDROID_BOOTLOGO 1
     export ANDROID_ROOT /system
     export ANDROID_ASSETS /system/app
diff --git a/rootdir/init.rc b/rootdir/init.rc
index 7ee1be9..dc260e6 100644
--- a/rootdir/init.rc
+++ b/rootdir/init.rc
@@ -231,6 +231,7 @@
     chmod 0660 /data/misc/wifi/wpa_supplicant.conf
     mkdir /data/local 0751 root root
     mkdir /data/misc/media 0700 media media
+    restorecon_recursive /data/misc/media
 
     # Set security context of any pre-existing /data/misc/adb/adb_keys file.
     restorecon /data/misc/adb
@@ -445,7 +446,7 @@
     start console
 
 # adbd is controlled via property triggers in init.<platform>.usb.rc
-service adbd /sbin/adbd
+service adbd /sbin/adbd --root_seclabel=u:r:su:s0
     class core
     socket adbd stream 660 system system
     disabled
@@ -577,3 +578,8 @@
     socket mdnsd stream 0660 mdnsr inet
     disabled
     oneshot
+
+service pre-recovery /system/bin/uncrypt
+    class main
+    disabled
+    oneshot
diff --git a/toolbox/Android.mk b/toolbox/Android.mk
index c5890b2..cdde20d 100644
--- a/toolbox/Android.mk
+++ b/toolbox/Android.mk
@@ -12,7 +12,6 @@
 	rmmod \
 	lsmod \
 	ifconfig \
-	setconsole \
 	rm \
 	mkdir \
 	rmdir \
@@ -70,6 +69,7 @@
 	swapoff \
 	mkswap \
 	readlink \
+	mknod \
 	nohup
 
 ifneq (,$(filter userdebug eng,$(TARGET_BUILD_VARIANT)))
@@ -90,6 +90,8 @@
 
 LOCAL_C_INCLUDES := bionic/libc/bionic
 
+LOCAL_CFLAGS += -Wno-unused-parameter
+
 LOCAL_SHARED_LIBRARIES := \
 	libcutils \
 	liblog \
diff --git a/toolbox/dd.c b/toolbox/dd.c
index a8c12d2..6b61ffb 100644
--- a/toolbox/dd.c
+++ b/toolbox/dd.c
@@ -92,9 +92,6 @@
 extern int		progress;
 extern const u_char	*ctab;
 
-
-#define MIN(a, b) ((a) < (b) ? (a) : (b))
-#define MAX(a, b) ((a) > (b) ? (a) : (b))
 #define DEFFILEMODE (S_IRUSR | S_IWUSR)
 
 static void dd_close(void);
diff --git a/toolbox/getevent.c b/toolbox/getevent.c
index f435a1c..c979c99 100644
--- a/toolbox/getevent.c
+++ b/toolbox/getevent.c
@@ -166,7 +166,7 @@
                     if(bit_labels && (print_flags & PRINT_LABELS)) {
                         bit_label = get_label(bit_labels, j * 8 + k);
                         if(bit_label)
-                            printf(" %.20s%c%*s", bit_label, down, 20 - strlen(bit_label), "");
+                            printf(" %.20s%c%*s", bit_label, down, (int) (20 - strlen(bit_label)), "");
                         else
                             printf(" %04x%c                ", j * 8 + k, down);
                     } else {
diff --git a/toolbox/insmod.c b/toolbox/insmod.c
index 756a64b..fb1448b 100644
--- a/toolbox/insmod.c
+++ b/toolbox/insmod.c
@@ -4,6 +4,7 @@
 #include <unistd.h>
 #include <malloc.h>
 #include <errno.h>
+#include <sys/param.h>
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <unistd.h>
@@ -45,7 +46,6 @@
 	return buffer;
 }
 
-#define min(x,y) ((x) < (y) ? (x) : (y))
 int insmod_main(int argc, char **argv)
 {
 	void *file;
@@ -73,7 +73,7 @@
 		char *ptr = opts;
 
 		for (i = 2; (i < argc) && (ptr < end); i++) {
-			len = min(strlen(argv[i]), end - ptr);
+			len = MIN(strlen(argv[i]), end - ptr);
 			memcpy(ptr, argv[i], len);
 			ptr += len;
 			*ptr++ = ' ';
diff --git a/toolbox/ls.c b/toolbox/ls.c
index c740f84..3cc5bb2 100644
--- a/toolbox/ls.c
+++ b/toolbox/ls.c
@@ -182,8 +182,8 @@
 
     mode2str(s->st_mode, mode);
     if (flags & LIST_LONG_NUMERIC) {
-        snprintf(user, sizeof(user), "%ld", s->st_uid);
-        snprintf(group, sizeof(group), "%ld", s->st_gid);
+        snprintf(user, sizeof(user), "%u", s->st_uid);
+        snprintf(group, sizeof(group), "%u", s->st_gid);
     } else {
         user2str(s->st_uid, user, sizeof(user));
         group2str(s->st_gid, group, sizeof(group));
diff --git a/toolbox/mknod.c b/toolbox/mknod.c
new file mode 100644
index 0000000..0fedece
--- /dev/null
+++ b/toolbox/mknod.c
@@ -0,0 +1,95 @@
+/*
+ * Copyright (c) 2014, The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *  * Neither the name of Google, Inc. nor the names of its contributors
+ *    may be used to endorse or promote products derived from this
+ *    software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <sys/stat.h>
+
+static int print_usage() {
+    fprintf(stderr, "mknod <path> [b|c|u|p] <major> <minor>\n");
+    return EXIT_FAILURE;
+}
+
+int mknod_main(int argc, char **argv) {
+    char *path = NULL;
+    int major = 0;
+    int minor = 0;
+    int args = 0;
+    mode_t mode = 0660;
+
+    /* Check correct argument count is 3 or 5 */
+    if (argc != 3 && argc != 5) {
+        fprintf(stderr, "Incorrect argument count\n");
+        return print_usage();
+    }
+
+    path = argv[1];
+
+    const char node_type = *argv[2];
+    switch (node_type) {
+    case 'b':
+        mode |= S_IFBLK;
+        args = 5;
+        break;
+    case 'c':
+    case 'u':
+        mode |= S_IFCHR;
+        args = 5;
+        break;
+    case 'p':
+        mode |= S_IFIFO;
+        args = 3;
+        break;
+    default:
+        fprintf(stderr, "Invalid node type '%c'\n", node_type);
+        return print_usage();
+    }
+
+    if (argc != args) {
+        if (args == 5) {
+            fprintf(stderr, "Node type '%c' requires <major> and <minor>\n", node_type);
+        } else {
+            fprintf(stderr, "Node type '%c' does not require <major> and <minor>\n", node_type);
+        }
+        return print_usage();
+    }
+
+    if (args == 5) {
+        major = atoi(argv[3]);
+        minor = atoi(argv[4]);
+    }
+
+    if (mknod(path, mode, makedev(major, minor))) {
+        perror("Unable to create node");
+        return EXIT_FAILURE;
+    }
+    return 0;
+}
diff --git a/toolbox/nandread.c b/toolbox/nandread.c
index 4666f26..d43b2fe 100644
--- a/toolbox/nandread.c
+++ b/toolbox/nandread.c
@@ -158,7 +158,7 @@
         printf("oobavail: %u\n", ecclayout.oobavail);
     }
     if (ecclayout.oobavail > spare_size)
-        printf("oobavail, %d > image spare size, %d\n", ecclayout.oobavail, spare_size);
+        printf("oobavail, %d > image spare size, %zu\n", ecclayout.oobavail, spare_size);
 
     ret = ioctl(fd, ECCGETSTATS, &initial_ecc);
     if (ret) {
diff --git a/toolbox/newfs_msdos.c b/toolbox/newfs_msdos.c
index 6d78eb6..27dca42 100644
--- a/toolbox/newfs_msdos.c
+++ b/toolbox/newfs_msdos.c
@@ -234,13 +234,6 @@
 static void setstr(u_int8_t *, const char *, size_t);
 static void usage(void);
 
-#ifdef ANDROID
-#define powerof2(x)     ((((x) - 1) & (x)) == 0)
-#define howmany(x, y)   (((x) + ((y) - 1)) / (y))
-#define MAX(x,y) ((x) > (y) ? (x) : (y))
-#define MIN(a, b) ((a) < (b) ? (a) : (b))
-
-#endif
 /*
  * Construct a FAT12, FAT16, or FAT32 file system.
  */
diff --git a/toolbox/r.c b/toolbox/r.c
index eb8ea0b..3b80db7 100644
--- a/toolbox/r.c
+++ b/toolbox/r.c
@@ -1,8 +1,16 @@
+#include <fcntl.h>
+#include <inttypes.h>
+#include <stdbool.h>
 #include <stdio.h>
 #include <stdlib.h>
-#include <sys/mman.h>
-#include <fcntl.h>
 #include <string.h>
+#include <sys/mman.h>
+
+#if __LP64__
+#define strtoptr strtoull
+#else
+#define strtoptr strtoul
+#endif
 
 static int usage()
 {
@@ -12,14 +20,9 @@
 
 int r_main(int argc, char *argv[])
 {
-    int width = 4, set = 0, fd;
-    unsigned addr, value, endaddr = 0;
-    unsigned long mmap_start, mmap_size;
-    void *page;
-    char *end;
-    
     if(argc < 2) return usage();
 
+    int width = 4;
     if(!strcmp(argv[1], "-b")) {
         width = 1;
         argc--;
@@ -31,37 +34,40 @@
     }
 
     if(argc < 2) return usage();
-    addr = strtoul(argv[1], 0, 16);
+    uintptr_t addr = strtoptr(argv[1], 0, 16);
 
-    end = strchr(argv[1], '-');
+    uintptr_t endaddr = 0;
+    char* end = strchr(argv[1], '-');
     if (end)
-        endaddr = strtoul(end + 1, 0, 16);
+        endaddr = strtoptr(end + 1, 0, 16);
 
     if (!endaddr)
         endaddr = addr + width - 1;
 
     if (endaddr <= addr) {
-        fprintf(stderr, "invalid end address\n");
+        fprintf(stderr, "end address <= start address\n");
         return -1;
     }
 
+    bool set = false;
+    uint32_t value = 0;
     if(argc > 2) {
-        set = 1;
+        set = true;
         value = strtoul(argv[2], 0, 16);
     }
 
-    fd = open("/dev/mem", O_RDWR | O_SYNC);
+    int fd = open("/dev/mem", O_RDWR | O_SYNC);
     if(fd < 0) {
         fprintf(stderr,"cannot open /dev/mem\n");
         return -1;
     }
-    
-    mmap_start = addr & ~(PAGE_SIZE - 1);
-    mmap_size = endaddr - mmap_start + 1;
+
+    off64_t mmap_start = addr & ~(PAGE_SIZE - 1);
+    size_t mmap_size = endaddr - mmap_start + 1;
     mmap_size = (mmap_size + PAGE_SIZE - 1) & ~(PAGE_SIZE - 1);
 
-    page = mmap(0, mmap_size, PROT_READ | PROT_WRITE,
-                MAP_SHARED, fd, mmap_start);
+    void* page = mmap64(0, mmap_size, PROT_READ | PROT_WRITE,
+                        MAP_SHARED, fd, mmap_start);
 
     if(page == MAP_FAILED){
         fprintf(stderr,"cannot mmap region\n");
@@ -71,21 +77,21 @@
     while (addr <= endaddr) {
         switch(width){
         case 4: {
-            unsigned *x = (unsigned*) (((unsigned) page) + (addr & 4095));
+            uint32_t* x = (uint32_t*) (((uintptr_t) page) + (addr & 4095));
             if(set) *x = value;
-            fprintf(stderr,"%08x: %08x\n", addr, *x);
+            fprintf(stderr,"%08"PRIxPTR": %08x\n", addr, *x);
             break;
         }
         case 2: {
-            unsigned short *x = (unsigned short*) (((unsigned) page) + (addr & 4095));
+            uint16_t* x = (uint16_t*) (((uintptr_t) page) + (addr & 4095));
             if(set) *x = value;
-            fprintf(stderr,"%08x: %04x\n", addr, *x);
+            fprintf(stderr,"%08"PRIxPTR": %04x\n", addr, *x);
             break;
         }
         case 1: {
-            unsigned char *x = (unsigned char*) (((unsigned) page) + (addr & 4095));
+            uint8_t* x = (uint8_t*) (((uintptr_t) page) + (addr & 4095));
             if(set) *x = value;
-            fprintf(stderr,"%08x: %02x\n", addr, *x);
+            fprintf(stderr,"%08"PRIxPTR": %02x\n", addr, *x);
             break;
         }
         }
diff --git a/toolbox/schedtop.c b/toolbox/schedtop.c
index 6859b50..a76f968 100644
--- a/toolbox/schedtop.c
+++ b/toolbox/schedtop.c
@@ -212,7 +212,7 @@
     }
     if (!(flags & FLAG_BATCH))
         printf("\e[H\e[0J");
-    printf("Processes: %d, Threads %d\n", processes.active, threads.active);
+    printf("Processes: %zu, Threads %zu\n", processes.active, threads.active);
     switch (time_dp) {
     case 3:
         printf("   TID --- SINCE LAST ---- ---------- TOTAL ----------\n");
diff --git a/toolbox/setconsole.c b/toolbox/setconsole.c
deleted file mode 100644
index 0159c07..0000000
--- a/toolbox/setconsole.c
+++ /dev/null
@@ -1,166 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-#include <fcntl.h>
-#include <string.h>
-#include <linux/kd.h>
-#include <linux/vt.h>
-#include <errno.h>
-#include <pthread.h>
-#include <unistd.h>
-#include <sys/ioctl.h>
-
-static int activate_thread_switch_vc;
-static void *activate_thread(void *arg)
-{
-    int res;
-    int fd = (int)arg;
-    while(activate_thread_switch_vc >= 0) {
-        do {
-            res = ioctl(fd, VT_ACTIVATE, (void*)activate_thread_switch_vc);
-        } while(res < 0 && errno == EINTR);
-        if (res < 0) {
-            fprintf(stderr, "ioctl( vcfd, VT_ACTIVATE, vtnum) failed, %d %d %s for %d\n", res, errno, strerror(errno), activate_thread_switch_vc);
-        }
-        if(activate_thread_switch_vc >= 0)
-            sleep(1);
-    }
-    return NULL;
-}
-
-
-int setconsole_main(int argc, char *argv[])
-{
-    int c;
-    int fd;
-    int res;
-
-    int mode = -1;
-    int new_vc = 0;
-    int close_vc = 0;
-    int switch_vc = -1;
-    int printvc = 0;
-    char *ttydev = "/dev/tty0";
-
-    do {
-        c = getopt(argc, argv, "d:gtncv:poh");
-        if (c == EOF)
-            break;
-        switch (c) {
-        case 'd':
-            ttydev = optarg;
-            break;
-        case 'g':
-            if(mode == KD_TEXT) {
-                fprintf(stderr, "%s: cannot specify both -g and -t\n", argv[0]);
-                exit(1);
-            }
-            mode = KD_GRAPHICS;
-            break;
-        case 't':
-            if(mode == KD_GRAPHICS) {
-                fprintf(stderr, "%s: cannot specify both -g and -t\n", argv[0]);
-                exit(1);
-            }
-            mode = KD_TEXT;
-            break;
-        case 'n':
-            new_vc = 1;
-            break;
-        case 'c':
-            close_vc = 1;
-            break;
-        case 'v':
-            switch_vc = atoi(optarg);
-            break;
-        case 'p':
-            printvc |= 1;
-            break;
-        case 'o':
-            printvc |= 2;
-            break;
-        case 'h':
-            fprintf(stderr, "%s [-d <dev>] [-v <vc>] [-gtncpoh]\n"
-                    "  -d <dev>   Use <dev> instead of /dev/tty0\n"
-                    "  -v <vc>    Switch to virtual console <vc>\n"
-                    "  -g         Switch to graphics mode\n"
-                    "  -t         Switch to text mode\n"
-                    "  -n         Create and switch to new virtual console\n"
-                    "  -c         Close unused virtual consoles\n"
-                    "  -p         Print new virtual console\n"
-                    "  -o         Print old virtual console\n"
-                    "  -h         Print help\n", argv[0]);
-            return -1;
-        case '?':
-            fprintf(stderr, "%s: invalid option -%c\n",
-                argv[0], optopt);
-            exit(1);
-        }
-    } while (1);
-    if(mode == -1 && new_vc == 0 && close_vc == 0 && switch_vc == -1 && printvc == 0) {
-        fprintf(stderr,"%s [-d <dev>] [-v <vc>] [-gtncpoh]\n", argv[0]);
-        return -1;
-    }
-
-    fd = open(ttydev, O_RDWR | O_SYNC);
-    if (fd < 0) {
-        fprintf(stderr, "cannot open %s\n", ttydev);
-        return -1;
-    }
-
-    if ((printvc && !new_vc) || (printvc & 2)) {
-        struct vt_stat vs;
-
-        res = ioctl(fd, VT_GETSTATE, &vs);
-        if (res < 0) {
-            fprintf(stderr, "ioctl(vcfd, VT_GETSTATE, &vs) failed, %d\n", res);
-        }
-        printf("%d\n", vs.v_active);
-    }
-
-    if (new_vc) {
-        int vtnum;
-        res = ioctl(fd, VT_OPENQRY, &vtnum);
-        if (res < 0 || vtnum == -1) {
-            fprintf(stderr, "ioctl(vcfd, VT_OPENQRY, &vtnum) failed, res %d, vtnum %d\n", res, vtnum);
-        }
-        switch_vc = vtnum;
-    }
-    if (switch_vc != -1) {
-        pthread_t thread;
-        pthread_attr_t attr;
-        activate_thread_switch_vc = switch_vc;
-        pthread_attr_init(&attr);
-        pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
-        pthread_create(&thread, &attr, activate_thread, (void*)fd);
-        
-        do {
-            res = ioctl(fd, VT_WAITACTIVE, (void*)switch_vc);
-        } while(res < 0 && errno == EINTR);
-        activate_thread_switch_vc = -1;
-        if (res < 0) {
-            fprintf(stderr, "ioctl( vcfd, VT_WAITACTIVE, vtnum) failed, %d %d %s for %d\n", res, errno, strerror(errno), switch_vc);
-        }
-        if(printvc & 1)
-            printf("%d\n", switch_vc);
-
-        close(fd);
-        fd = open(ttydev, O_RDWR | O_SYNC);
-        if (fd < 0) {
-            fprintf(stderr, "cannot open %s\n", ttydev);
-            return -1;
-        }
-    }
-    if (close_vc) {
-        res = ioctl(fd, VT_DISALLOCATE, 0);
-        if (res < 0) {
-            fprintf(stderr, "ioctl(vcfd, VT_DISALLOCATE, 0) failed, %d\n", res);
-        }
-    }
-    if (mode != -1) {
-        if (ioctl(fd, KDSETMODE, (void*)mode) < 0) {
-            fprintf(stderr, "KDSETMODE %d failed\n", mode);
-            return -1;
-        }
-    }
-    return 0;
-}