diff --git a/adb/commandline.c b/adb/commandline.c
index 7410dce..41b340a 100644
--- a/adb/commandline.c
+++ b/adb/commandline.c
@@ -96,7 +96,8 @@
         " -e                            - directs command to the only running emulator.\n"
         "                                 returns an error if more than one emulator is running.\n"
         " -s <serial number>            - directs command to the USB device or emulator with\n"
-        "                                 the given serial number\n"
+        "                                 the given serial number. Overrides ANDROID_SERIAL\n"
+        "                                 envivornment variable.\n"
         " -p <product name or path>     - simple product name like 'sooner', or\n"
         "                                 a relative/absolute path to a product\n"
         "                                 out directory like 'out/target/product/sooner'.\n"
@@ -766,6 +767,8 @@
     }
     // TODO: also try TARGET_PRODUCT/TARGET_DEVICE as a hint
 
+    serial = getenv("ANDROID_SERIAL");
+
         /* modifiers and flags */
     while(argc > 0) {
         if(!strcmp(argv[0],"nodaemon")) {
diff --git a/include/arch/freebsd-x86/AndroidConfig.h b/include/arch/freebsd-x86/AndroidConfig.h
new file mode 100644
index 0000000..cc118f4
--- /dev/null
+++ b/include/arch/freebsd-x86/AndroidConfig.h
@@ -0,0 +1,317 @@
+/*
+ * Copyright (C) 2005 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.
+ */
+
+/*
+ * Android config -- "FreeBSD".  Used for desktop x86 FreeBSD.
+ */
+#ifndef _ANDROID_CONFIG_H
+#define _ANDROID_CONFIG_H
+
+/*
+ * make sure we are building for FreeBSD
+ */
+#ifndef OS_FREEBSD
+#define OS_FREEBSD
+#endif
+/*
+ * ===========================================================================
+ *                              !!! IMPORTANT !!!
+ * ===========================================================================
+ *
+ * This file is included by ALL C/C++ source files.  Don't put anything in
+ * here unless you are absolutely certain it can't go anywhere else.
+ *
+ * Any C++ stuff must be wrapped with "#ifdef __cplusplus".  Do not use "//"
+ * comments.
+ */
+
+/*
+ * Threading model.  Choose one:
+ *
+ * HAVE_PTHREADS - use the pthreads library.
+ * HAVE_WIN32_THREADS - use Win32 thread primitives.
+ *  -- combine HAVE_CREATETHREAD, HAVE_CREATEMUTEX, and HAVE__BEGINTHREADEX
+ */
+#define HAVE_PTHREADS
+
+/*
+ * Do we have the futex syscall?
+ */
+/* #define HAVE_FUTEX */
+
+/*
+ * Process creation model.  Choose one:
+ *
+ * HAVE_FORKEXEC - use fork() and exec()
+ * HAVE_WIN32_PROC - use CreateProcess()
+ */
+#define HAVE_FORKEXEC
+
+/*
+ * Process out-of-memory adjustment.  Set if running on Linux,
+ * where we can write to /proc/<pid>/oom_adj to modify the out-of-memory
+ * badness adjustment.
+ */
+/* #define HAVE_OOM_ADJ */
+
+/*
+ * IPC model.  Choose one:
+ *
+ * HAVE_SYSV_IPC - use the classic SysV IPC mechanisms (semget, shmget).
+ * HAVE_MACOSX_IPC - use Macintosh IPC mechanisms (sem_open, mmap).
+ * HAVE_WIN32_IPC - use Win32 IPC (CreateSemaphore, CreateFileMapping).
+ * HAVE_ANDROID_IPC - use Android versions (?, mmap).
+ */
+#define HAVE_SYSV_IPC
+
+/*
+ * Memory-mapping model. Choose one:
+ *
+ * HAVE_POSIX_FILEMAP - use the Posix sys/mmap.h
+ * HAVE_WIN32_FILEMAP - use Win32 filemaps
+ */
+#define  HAVE_POSIX_FILEMAP
+
+/*
+ * Define this if you have <termio.h>
+ */
+/* #define  HAVE_TERMIO_H */
+
+/*
+ * Define this if you build against MSVCRT.DLL
+ */
+/* #define HAVE_MS_C_RUNTIME */
+
+/*
+ * Define this if you have sys/uio.h
+ */
+#define  HAVE_SYS_UIO_H
+
+/*
+ * Define this if your platforms implements symbolic links
+ * in its filesystems
+ */
+#define HAVE_SYMLINKS
+
+/*
+ * Define this if we have localtime_r().
+ */
+#define HAVE_LOCALTIME_R
+
+/*
+ * Define this if we have gethostbyname_r().
+ */
+/* #define HAVE_GETHOSTBYNAME_R */
+
+/*
+ * Define this if we have ioctl().
+ */
+#define HAVE_IOCTL
+
+/*
+ * Define this if we want to use WinSock.
+ */
+/* #define HAVE_WINSOCK */
+
+/*
+ * Define this if have clock_gettime() and friends
+ *
+ * Desktop Linux has this in librt, but it's broken in goobuntu, yielding
+ * mildly or wildly inaccurate results.
+ */
+#define HAVE_POSIX_CLOCKS
+
+/*
+ * Define this if we have pthread_cond_timedwait_monotonic() and
+ * clock_gettime(CLOCK_MONOTONIC).
+ */
+/* #define HAVE_TIMEDWAIT_MONOTONIC */
+
+/*
+ * Define this if we have linux style epoll()
+ */
+/* #define HAVE_EPOLL */
+
+/*
+ * Endianness of the target machine.  Choose one:
+ *
+ * HAVE_ENDIAN_H -- have endian.h header we can include.
+ * HAVE_LITTLE_ENDIAN -- we are little endian.
+ * HAVE_BIG_ENDIAN -- we are big endian.
+ */
+/* #define HAVE_ENDIAN_H */
+#define HAVE_LITTLE_ENDIAN
+
+/*
+ * Define this if you have sys/endian.h
+ * NOTE: mutually exclusive with HAVE_ENDIAN_H
+ */
+#define HAVE_SYS_ENDIAN_H
+
+/*
+ * We need to choose between 32-bit and 64-bit off_t.  All of our code should
+ * agree on the same size.  For desktop systems, use 64-bit values,
+ * because some of our libraries (e.g. wxWidgets) expect to be built that way.
+ */
+#define _FILE_OFFSET_BITS 64
+#define _LARGEFILE_SOURCE 1
+
+/*
+ * Defined if we have the backtrace() call for retrieving a stack trace.
+ * Needed for CallStack to operate; if not defined, CallStack is
+ * non-functional.
+ */
+#define HAVE_BACKTRACE 0
+
+/*
+ * Defined if we have the dladdr() call for retrieving the symbol associated
+ * with a memory address.  If not defined, stack crawls will not have symbolic
+ * information.
+ */
+#define HAVE_DLADDR 1
+
+/*
+ * Defined if we have the cxxabi.h header for demangling C++ symbols.  If
+ * not defined, stack crawls will be displayed with raw mangled symbols
+ */
+#define HAVE_CXXABI 0
+
+/*
+ * Defined if we have the gettid() system call.
+ */
+/* #define HAVE_GETTID */
+
+/* 
+ * Defined if we have the sched_setscheduler() call
+ */
+#define HAVE_SCHED_SETSCHEDULER
+
+/*
+ * Add any extra platform-specific defines here.
+ */
+
+/*
+ * Define if we have <malloc.h> header
+ */
+#define HAVE_MALLOC_H
+
+/*
+ * Define if we have Linux-style non-filesystem Unix Domain Sockets
+ */
+
+/*
+ * What CPU architecture does this platform use?
+ */
+#define ARCH_X86
+
+
+/*
+ * Define if we have Linux's inotify in <sys/inotify.h>.
+ */
+/*#define HAVE_INOTIFY 1*/
+
+/*
+ * Define if we have madvise() in <sys/mman.h>
+ */
+#define HAVE_MADVISE 1
+
+/*
+ * Define if tm struct has tm_gmtoff field
+ */
+#define HAVE_TM_GMTOFF 1
+
+/*
+ * Define if dirent struct has d_type field
+ */
+#define HAVE_DIRENT_D_TYPE 1
+
+/*
+ * Define if libc includes Android system properties implementation.
+ */
+/* #define HAVE_LIBC_SYSTEM_PROPERTIES */
+
+/*
+ * Define if system provides a system property server (should be
+ * mutually exclusive with HAVE_LIBC_SYSTEM_PROPERTIES).
+ */
+#define HAVE_SYSTEM_PROPERTY_SERVER
+
+/*
+ * sprintf() format string for shared library naming.
+ */
+#define OS_SHARED_LIB_FORMAT_STR    "lib%s.so"
+
+/*
+ * type for the third argument to mincore().
+ */
+#define MINCORE_POINTER_TYPE char *
+
+/*
+ * Do we have the sigaction flag SA_NOCLDWAIT?
+ */
+#define HAVE_SA_NOCLDWAIT
+
+/*
+ * Define if we include <sys/mount.h> for statfs()
+ */
+#define INCLUDE_SYS_MOUNT_FOR_STATFS 1
+  
+/*
+ * The default path separator for the platform
+ */
+#define OS_PATH_SEPARATOR '/'
+
+/*
+ * Is the filesystem case sensitive?
+ */
+#define OS_CASE_SENSITIVE
+
+/*
+ * Define if <sys/socket.h> exists.
+ */
+#define HAVE_SYS_SOCKET_H 1
+
+/*
+ * Define if the strlcpy() function exists on the system.
+ */
+#define HAVE_STRLCPY 1
+
+/*
+ * Define if prctl() exists
+ */
+/* #define HAVE_PRCTL 1 */
+
+/*
+ * Define if writev() exists
+ */
+#define HAVE_WRITEV 1
+
+/*
+ * Define if <alloca.h> does not exist
+ * NOTE: <alloca.h> defines alloca() which
+ *   on FreeBSD is defined in <stdlib.h>
+ */
+#define HAVE_NO_ALLOCA_H
+
+/*
+ * Defines CLOCK_PROCESS_CPUTIME_ID for clock_gettime()
+ * XXX: CLOCK_PROF seems to be commonly used replacement
+ */
+#ifndef  CLOCK_PROCESS_CPUTIME_ID
+#define CLOCK_PROCESS_CPUTIME_ID CLOCK_PROF
+#endif
+
+#endif /*_ANDROID_CONFIG_H*/
diff --git a/include/cutils/abort_socket.h b/include/cutils/abort_socket.h
new file mode 100644
index 0000000..fbb1112
--- /dev/null
+++ b/include/cutils/abort_socket.h
@@ -0,0 +1,103 @@
+/*
+ * Copyright 2009, 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.
+ */
+
+/* Helper to perform abortable blocking operations on a socket:
+ *   asocket_connect()
+ *   asocket_accept()
+ *   asocket_read()
+ *   asocket_write()
+ * These calls are similar to the regular syscalls, but can be aborted with:
+ *   asocket_abort()
+ *
+ * Calling close() on a regular POSIX socket does not abort blocked syscalls on
+ * that socket in other threads.
+ *
+ * After calling asocket_abort() the socket cannot be reused.
+ *
+ * Call asocket_destory() *after* all threads have finished with the socket to
+ * finish closing the socket and free the asocket structure.
+ *
+ * The helper is implemented by setting the socket non-blocking to initiate
+ * syscalls connect(), accept(), read(), write(), then using a blocking poll()
+ * on both the primary socket and a local pipe. This makes the poll() abortable
+ * by writing a byte to the local pipe in asocket_abort().
+ *
+ * asocket_create() sets the fd to non-blocking mode. It must not be changed to
+ * blocking mode.
+ *
+ * Using asocket will triple the number of file descriptors required per
+ * socket, due to the local pipe. It may be possible to use a global pipe per
+ * process rather than per socket, but we have not been able to come up with a
+ * race-free implementation yet.
+ *
+ * All functions except asocket_init() and asocket_destroy() are thread safe.
+ */
+
+#include <stdlib.h>
+#include <sys/socket.h>
+
+#ifndef __CUTILS_ABORT_SOCKET_H__
+#define __CUTILS_ABORT_SOCKET_H__
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct asocket {
+    int fd;           /* primary socket fd */
+    int abort_fd[2];  /* pipe used to abort */
+};
+
+/* Create an asocket from fd.
+ * Sets the socket to non-blocking mode.
+ * Returns NULL on error with errno set.
+ */
+struct asocket *asocket_init(int fd);
+
+/* Blocking socket I/O with timeout.
+ * Calling asocket_abort() from another thread will cause each of these
+ * functions to immediately return with value -1 and errno ECANCELED.
+ * timeout is in ms, use -1 to indicate no timeout. On timeout -1 is returned
+ * with errno ETIMEDOUT.
+ * EINTR is handled in-call.
+ * Other semantics are identical to the regular syscalls.
+ */
+int asocket_connect(struct asocket *s, const struct sockaddr *addr,
+        socklen_t addrlen, int timeout);
+
+int asocket_accept(struct asocket *s, struct sockaddr *addr,
+        socklen_t *addrlen, int timeout);
+
+int asocket_read(struct asocket *s, void *buf, size_t count, int timeout);
+
+int asocket_write(struct asocket *s, const void *buf, size_t count,
+        int timeout);
+
+/* Abort above calls and shutdown socket.
+ * Further I/O operations on this socket will immediately fail after this call.
+ * asocket_destroy() should be used to release resources once all threads
+ * have returned from blocking calls on the socket.
+ */
+void asocket_abort(struct asocket *s);
+
+/* Close socket and free asocket structure.
+ * Must not be called until all calls on this structure have completed.
+ */
+void asocket_destroy(struct asocket *s);
+
+#ifdef __cplusplus
+}
+#endif
+#endif //__CUTILS_ABORT_SOCKET__H__
diff --git a/include/cutils/tztime.h b/include/cutils/tztime.h
index 69dbc88..cf103ca 100644
--- a/include/cutils/tztime.h
+++ b/include/cutils/tztime.h
@@ -17,6 +17,8 @@
 #ifndef _CUTILS_TZTIME_H
 #define _CUTILS_TZTIME_H
 
+#include <time.h>
+
 #ifdef __cplusplus
 extern "C" {
 #endif
@@ -24,6 +26,9 @@
 time_t mktime_tz(struct tm * const tmp, char const * tz);
 void localtime_tz(const time_t * const timep, struct tm * tmp, const char* tz);
 
+#ifndef HAVE_ANDROID_OS
+/* the following is defined in <time.h> in Bionic */
+
 struct strftime_locale {
     const char *mon[12];    /* short names */
     const char *month[12];  /* long names */
@@ -40,6 +45,8 @@
 
 size_t strftime_tz(char *s, size_t max, const char *format, const struct tm *tm, const struct strftime_locale *locale);
 
+#endif /* !HAVE_ANDROID_OS */
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/init/builtins.c b/init/builtins.c
index 17df0af..93ce6e8 100644
--- a/init/builtins.c
+++ b/init/builtins.c
@@ -29,6 +29,7 @@
 #include <stdlib.h>
 #include <sys/mount.h>
 #include <sys/resource.h>
+#include <linux/loop.h>
 
 #include "init.h"
 #include "keywords.h"
@@ -257,7 +258,7 @@
 int do_mount(int nargs, char **args)
 {
     char tmp[64];
-    char *source;
+    char *source, *target, *system;
     char *options = NULL;
     unsigned flags = 0;
     int n, i;
@@ -275,15 +276,70 @@
             options = args[n];
     }
 
+    system = args[1];
     source = args[2];
+    target = args[3];
+
     if (!strncmp(source, "mtd@", 4)) {
         n = mtd_name_to_number(source + 4);
-        if (n >= 0) {
-            sprintf(tmp, "/dev/block/mtdblock%d", n);
-            source = tmp;
+        if (n < 0) {
+            return -1;
         }
+
+        sprintf(tmp, "/dev/block/mtdblock%d", n);
+
+        if (mount(tmp, target, system, flags, options) < 0) {
+            return -1;
+        }
+
+        return 0;
+    } else if (!strncmp(source, "loop@", 5)) {
+        int mode, loop, fd;
+        struct loop_info info;
+
+        mode = (flags & MS_RDONLY) ? O_RDONLY : O_RDWR;
+        fd = open(source + 5, mode);
+        if (fd < 0) {
+            return -1;
+        }
+
+        for (n = 0; ; n++) {
+            sprintf(tmp, "/dev/block/loop%d", n);
+            loop = open(tmp, mode);
+            if (loop < 0) {
+                return -1;
+            }
+
+            /* if it is a blank loop device */
+            if (ioctl(loop, LOOP_GET_STATUS, &info) < 0 && errno == ENXIO) {
+                /* if it becomes our loop device */
+                if (ioctl(loop, LOOP_SET_FD, fd) >= 0) {
+                    close(fd);
+
+                    if (mount(tmp, target, system, flags, options) < 0) {
+                        ioctl(loop, LOOP_CLR_FD, 0);
+                        close(loop);
+                        return -1;
+                    }
+
+                    close(loop);
+                    return 0;
+                }
+            }
+
+            close(loop);
+        }
+
+        close(fd);
+        ERROR("out of loopback devices");
+        return -1;
+    } else {
+        if (mount(source, target, system, flags, options) < 0) {
+            return -1;
+        }
+
+        return 0;
     }
-    return mount(source, args[3], args[1], flags, options);
 }
 
 int do_setkey(int nargs, char **args)
diff --git a/init/devices.c b/init/devices.c
index c278607..300faab 100644
--- a/init/devices.c
+++ b/init/devices.c
@@ -131,6 +131,8 @@
     { "/dev/qmi0",          0640,   AID_RADIO,      AID_RADIO,      0 },
     { "/dev/qmi1",          0640,   AID_RADIO,      AID_RADIO,      0 },
     { "/dev/qmi2",          0640,   AID_RADIO,      AID_RADIO,      0 },
+        /* CDMA radio interface MUX */
+    { "/dev/ts0710mux",     0640,   AID_RADIO,      AID_RADIO,      1 },
     { "/dev/tun",           0640,   AID_VPN  ,      AID_VPN,        0 },
     { NULL, 0, 0, 0, 0 },
 };
@@ -388,6 +390,9 @@
         } else if(!strncmp(uevent->subsystem, "mtd", 3)) {
             base = "/dev/mtd/";
             mkdir(base, 0755);
+        } else if(!strncmp(uevent->subsystem, "sound", 5)) {
+            base = "/dev/snd/";
+            mkdir(base, 0755);
         } else if(!strncmp(uevent->subsystem, "misc", 4) &&
                     !strncmp(name, "log_", 4)) {
             base = "/dev/log/";
diff --git a/init/init.c b/init/init.c
index 0c1ad3f..8c2a058 100644
--- a/init/init.c
+++ b/init/init.c
@@ -255,9 +255,11 @@
             setuid(svc->uid);
         }
 
-        if (!dynamic_args)
-            execve(svc->args[0], (char**) svc->args, (char**) ENV);
-        else {
+        if (!dynamic_args) {
+            if (execve(svc->args[0], (char**) svc->args, (char**) ENV) < 0) {
+                ERROR("cannot execve('%s'): %s\n", svc->args[0], strerror(errno));
+            }
+        } else {
             char *arg_ptrs[SVC_MAXARGS+1];
             int arg_idx = svc->nargs;
             char *tmp = strdup(dynamic_args);
diff --git a/libacc/Android.mk b/libacc/Android.mk
new file mode 100644
index 0000000..c3207cc
--- /dev/null
+++ b/libacc/Android.mk
@@ -0,0 +1,12 @@
+LOCAL_PATH:= $(call my-dir)
+include $(CLEAR_VARS)
+
+#
+# Shared library
+#
+
+LOCAL_MODULE:= acc
+LOCAL_SRC_FILES := acc.cpp disassem.cpp
+LOCAL_MODULE_TAGS := tests
+
+include $(BUILD_EXECUTABLE)
diff --git a/libacc/FEATURES b/libacc/FEATURES
new file mode 100644
index 0000000..1a44415
--- /dev/null
+++ b/libacc/FEATURES
@@ -0,0 +1,65 @@
+
+Supported C language subset (read joint example 'otccex.c' to have
+    an introduction to OTCC dialect):
+
+    - Expressions:
+
+        * binary operators, by decreasing priority order: '*' '/' '%',
+          '+' '-', '>>' '<<', '<' '<=' '>' '>=', '==' '!=', '&',
+          '^', '|', '=', '&&', '||'.
+
+        * '&&' and '||' have the same semantics as C : left to right
+          evaluation and early exit.
+
+        * Parenthesis are supported.
+
+        * Unary operators: '&', '*' (pointer indirection), '-'
+          (negation), '+', '!', '~', post fixed '++' and '--'.
+
+        * Pointer indirection ('*') only works with explicit cast to
+          'char *', 'int *' or 'int (*)()' (function pointer).
+
+        * '++', '--', and unary '&' can only be used with variable
+          lvalue (left value).
+
+        * '=' can only be used with variable or '*' (pointer
+          indirection) lvalue.
+
+        * Function calls are supported with standard i386 calling
+          convention. Function pointers are supported with explicit
+          cast. Functions can be used before being declared.
+
+    - Types: only signed integer ('int') variables and functions can
+      be declared. Variables cannot be initialized in
+      declarations. Only old K&R function declarations are parsed
+      (implicit integer return value and no types on arguments).
+
+    - Any function or variable from the libc can be used because OTCC
+      uses the libc dynamic linker to resolve undefined symbols.
+
+    - Instructions: blocks ('{' '}') are supported as in C. 'if' and
+      'else' can be used for tests. The 'while' and 'for' C constructs
+      are supported for loops. 'break' can be used to exit
+      loops. 'return' is used for the return value of a function.
+
+    - Identifiers are parsed the same way as C. Local variables are
+      handled, but there is no local name space (not a problem if
+      different names are used for local and global variables).
+
+    - Numbers can be entered in decimal, hexadecimal ('0x' or '0X'
+      prefix), or octal ('0' prefix).
+
+    - '#define' is supported without function like arguments. No macro
+      recursion is tolerated. Other preprocessor directives are
+      ignored.
+
+    - C Strings and C character constants are supported. Only '\n',
+      '\"', '\'' and '\\' escapes are recognized.
+
+    - Both C comments ( /* */ ) and C++ comments ( // ... end-of-line ) can be used.
+
+    - No error is displayed if an incorrect program is given.
+
+    - Memory: the code, data, and symbol sizes are limited to 100KB
+      (it can be changed in the source code).
+
diff --git a/libacc/MODULE_LICENSE_BSD_LIKE b/libacc/MODULE_LICENSE_BSD_LIKE
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/libacc/MODULE_LICENSE_BSD_LIKE
diff --git a/libacc/acc.cpp b/libacc/acc.cpp
new file mode 100644
index 0000000..04d45d5
--- /dev/null
+++ b/libacc/acc.cpp
@@ -0,0 +1,1673 @@
+/*
+ * Android "Almost" C Compiler.
+ * This is a compiler for a small subset of the C language, intended for use
+ * in scripting environments where speed and memory footprint are important.
+ *
+ * This code is based upon the "unobfuscated" version of the
+ * Obfuscated Tiny C compiler, and retains the
+ * original copyright notice and license from that compiler, see below.
+ *
+ */
+
+/*
+ Obfuscated Tiny C Compiler
+
+ Copyright (C) 2001-2003 Fabrice Bellard
+
+ This software is provided 'as-is', without any express or implied
+ warranty.  In no event will the authors be held liable for any damages
+ arising from the use of this software.
+
+ Permission is granted to anyone to use this software for any purpose,
+ including commercial applications, and to alter it and redistribute it
+ freely, subject to the following restrictions:
+
+ 1. The origin of this software must not be misrepresented; you must not
+ claim that you wrote the original software. If you use this software
+ in a product, an acknowledgment in the product and its documentation
+ *is* required.
+ 2. Altered source versions must be plainly marked as such, and must not be
+ misrepresented as being the original software.
+ 3. This notice may not be removed or altered from any source distribution.
+ */
+
+#include <ctype.h>
+#include <dlfcn.h>
+#include <stdarg.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#if defined(__arm__)
+#include <unistd.h>
+#endif
+
+#if defined(__arm__)
+#define DEFAULT_ARM_CODEGEN
+#define PROVIDE_ARM_CODEGEN
+#elif defined(__i386__)
+#define DEFAULT_X86_CODEGEN
+#define PROVIDE_X86_CODEGEN
+#elif defined(__x86_64__)
+#define DEFAULT_X64_CODEGEN
+#define PROVIDE_X64_CODEGEN
+#endif
+
+
+#ifdef PROVIDE_ARM_CODEGEN
+#include "disassem.h"
+#endif
+
+namespace acc {
+
+class Compiler {
+    class CodeBuf {
+        char* ind;
+        char* pProgramBase;
+
+        void release() {
+            if (pProgramBase != 0) {
+                free(pProgramBase);
+                pProgramBase = 0;
+            }
+        }
+
+    public:
+        CodeBuf() {
+            pProgramBase = 0;
+            ind = 0;
+        }
+
+        ~CodeBuf() {
+            release();
+        }
+
+        void init(int size) {
+            release();
+            pProgramBase = (char*) calloc(1, size);
+            ind = pProgramBase;
+        }
+
+        int o4(int n) {
+            intptr_t result = (intptr_t) ind;
+            * (int*) ind = n;
+            ind += 4;
+            return result;
+        }
+
+        /*
+         * Output a byte. Handles all values, 0..ff.
+         */
+        void ob(int n) {
+            *ind++ = n;
+        }
+
+        inline void* getBase() {
+            return (void*) pProgramBase;
+        }
+
+        intptr_t getSize() {
+            return ind - pProgramBase;
+        }
+
+        intptr_t getPC() {
+            return (intptr_t) ind;
+        }
+    };
+
+    class CodeGenerator {
+    public:
+        CodeGenerator() {}
+        virtual ~CodeGenerator() {}
+
+        virtual void init(CodeBuf* pCodeBuf) {
+            this->pCodeBuf = pCodeBuf;
+        }
+
+        /* returns address to patch with local variable size
+        */
+        virtual int functionEntry(int argCount) = 0;
+
+        virtual void functionExit(int argCount, int localVariableAddress, int localVariableSize) = 0;
+
+        /* load immediate value */
+        virtual void li(int t) = 0;
+
+        virtual int gjmp(int t) = 0;
+
+        /* l = 0: je, l == 1: jne */
+        virtual int gtst(bool l, int t) = 0;
+
+        virtual void gcmp(int op) = 0;
+
+        virtual void genOp(int op) = 0;
+
+        virtual void clearECX() = 0;
+
+        virtual void pushEAX() = 0;
+
+        virtual void popECX() = 0;
+
+        virtual void storeEAXToAddressECX(bool isInt) = 0;
+
+        virtual void loadEAXIndirect(bool isInt) = 0;
+
+        virtual void leaEAX(int ea) = 0;
+
+        virtual void storeEAX(int ea) = 0;
+
+        virtual void loadEAX(int ea, bool isIncDec, int op) = 0;
+
+        virtual int beginFunctionCallArguments() = 0;
+
+        virtual void storeEAToArg(int l) = 0;
+
+        virtual void endFunctionCallArguments(int a, int l) = 0;
+
+
+        virtual int callForward(int symbol) = 0;
+
+        virtual void callRelative(int t) = 0;
+
+        virtual void callIndirect(int l) = 0;
+
+        virtual void adjustStackAfterCall(int l, bool isIndirect) = 0;
+
+        virtual int disassemble(FILE* out) = 0;
+
+        /* output a symbol and patch all calls to it */
+        virtual void gsym(int t) = 0;
+
+        virtual int finishCompile() {
+#if defined(__arm__)
+            const long base = long(pCodeBuf->getBase());
+            const long curr = base + long(pCodeBuf->getSize());
+            int err = cacheflush(base, curr, 0);
+            return err;
+#else
+            return 0;
+#endif
+        }
+
+        /**
+         * Adjust relative branches by this amount.
+         */
+        virtual int jumpOffset() = 0;
+
+    protected:
+        /*
+         * Output a byte. Handles all values, 0..ff.
+         */
+        void ob(int n) {
+            pCodeBuf->ob(n);
+        }
+
+        intptr_t o4(int data) {
+            return pCodeBuf->o4(data);
+        }
+
+        intptr_t getBase() {
+            return (intptr_t) pCodeBuf->getBase();
+        }
+
+        intptr_t getPC() {
+            return pCodeBuf->getPC();
+        }
+    private:
+        CodeBuf* pCodeBuf;
+    };
+
+#ifdef PROVIDE_ARM_CODEGEN
+
+    class ARMCodeGenerator : public CodeGenerator {
+    public:
+        ARMCodeGenerator() {}
+        virtual ~ARMCodeGenerator() {}
+
+        /* returns address to patch with local variable size
+        */
+        virtual int functionEntry(int argCount) {
+            fprintf(stderr, "functionEntry(%d);\n", argCount);
+            // sp -> arg4 arg5 ...
+            // Push our register-based arguments back on the stack
+            if (argCount > 0) {
+                int regArgCount = argCount <= 4 ? argCount : 4;
+                o4(0xE92D0000 | ((1 << argCount) - 1)); // stmfd    sp!, {}
+            }
+            // sp -> arg0 arg1 ...
+            o4(0xE92D4800); // stmfd sp!, {fp, lr}
+            // sp, fp -> oldfp, retadr, arg0 arg1 ....
+            o4(0xE1A0B00D); // mov    fp, sp
+            return o4(0xE24DD000); // sub    sp, sp, # <local variables>
+        }
+
+        virtual void functionExit(int argCount, int localVariableAddress, int localVariableSize) {
+            fprintf(stderr, "functionExit(%d, %d, %d);\n", argCount, localVariableAddress, localVariableSize);
+            // Patch local variable allocation code:
+            if (localVariableSize < 0 || localVariableSize > 255) {
+                error("localVariables out of range: %d", localVariableSize);
+            }
+            *(char*) (localVariableAddress) = localVariableSize;
+
+            // sp -> locals .... fp -> oldfp, retadr, arg0, arg1, ...
+            o4(0xE1A0E00B); // mov lr, fp
+            o4(0xE59BB000); // ldr fp, [fp]
+            o4(0xE28ED004); // add sp, lr, #4
+            // sp -> retadr, arg0, ...
+            o4(0xE8BD4000); // ldmfd    sp!, {lr}
+            // sp -> arg0 ....
+            if (argCount > 0) {
+                // We store the PC into the lr so we can adjust the sp before
+                // returning. We need to pull off the registers we pushed
+                // earlier. We don't need to actually store them anywhere,
+                // just adjust the stack.
+                int regArgCount = argCount <= 4 ? argCount : 4;
+                o4(0xE28DD000 | (regArgCount << 2)); // add sp, sp, #argCount << 2
+            }
+            o4(0xE12FFF1E); // bx lr
+        }
+
+        /* load immediate value */
+        virtual void li(int t) {
+            fprintf(stderr, "li(%d);\n", t);
+            if (t >= 0 && t < 255) {
+                 o4(0xE3A00000 + t); // mov    r0, #0
+            } else if (t >= -256 && t < 0) {
+                // mvn means move constant ^ ~0
+                o4(0xE3E00001 - t); // mvn    r0, #0
+            } else {
+                  o4(0xE51F0000); //         ldr    r0, .L3
+                  o4(0xEA000000); //         b .L99
+                  o4(t);          // .L3:   .word 0
+                                  // .L99:
+            }
+        }
+
+        virtual int gjmp(int t) {
+            fprintf(stderr, "gjmp(%d);\n", t);
+            return o4(0xEA000000 | encodeAddress(t)); // b .L33
+        }
+
+        /* l = 0: je, l == 1: jne */
+        virtual int gtst(bool l, int t) {
+            fprintf(stderr, "gtst(%d, %d);\n", l, t);
+            o4(0xE3500000); // cmp r0,#0
+            int branch = l ? 0x1A000000 : 0x0A000000; // bne : beq
+            return o4(branch | encodeAddress(t));
+        }
+
+        virtual void gcmp(int op) {
+            fprintf(stderr, "gcmp(%d);\n", op);
+            o4(0xE1510000); // cmp r1, r1
+            switch(op) {
+            case OP_EQUALS:
+                o4(0x03A00001); // moveq r0,#1
+                o4(0x13A00000); // movne r0,#0
+                break;
+            case OP_NOT_EQUALS:
+                o4(0x03A00000); // moveq r0,#0
+                o4(0x13A00001); // movne r0,#1
+                break;
+            case OP_LESS_EQUAL:
+                o4(0xD3A00001); // movle r0,#1
+                o4(0xC3A00000); // movgt r0,#0
+                break;
+            case OP_GREATER:
+                o4(0xD3A00000); // movle r0,#0
+                o4(0xC3A00001); // movgt r0,#1
+                break;
+            case OP_GREATER_EQUAL:
+                o4(0xA3A00001); // movge r0,#1
+                o4(0xB3A00000); // movlt r0,#0
+                break;
+            case OP_LESS:
+                o4(0xA3A00000); // movge r0,#0
+                o4(0xB3A00001); // movlt r0,#1
+                break;
+            default:
+                error("Unknown comparison op %d", op);
+                break;
+            }
+        }
+
+        virtual void genOp(int op) {
+            fprintf(stderr, "genOp(%d);\n", op);
+            switch(op) {
+            case OP_MUL:
+                o4(0x0E0000091); // mul     r0,r1,r0
+                break;
+            case OP_DIV:
+                callRuntime(runtime_DIV);
+                break;
+            case OP_MOD:
+                callRuntime(runtime_MOD);
+                break;
+            case OP_PLUS:
+                o4(0xE0810000);  // add     r0,r1,r0
+                break;
+            case OP_MINUS:
+                o4(0xE0410000);  // sub     r0,r1,r0
+                break;
+            case OP_SHIFT_LEFT:
+                o4(0xE1A00011);  // lsl     r0,r1,r0
+                break;
+            case OP_SHIFT_RIGHT:
+                o4(0xE1A00051);  // asr     r0,r1,r0
+                break;
+            case OP_BIT_AND:
+                o4(0xE0010000);  // and     r0,r1,r0
+                break;
+            case OP_BIT_XOR:
+                o4(0xE0210000);  // eor     r0,r1,r0
+                break;
+            case OP_BIT_OR:
+                o4(0xE1810000);  // orr     r0,r1,r0
+                break;
+            case OP_BIT_NOT:
+                o4(0xE1E00000);  // mvn     r0, r0
+                break;
+            default:
+                error("Unimplemented op %d\n", op);
+                break;
+            }
+#if 0
+            o(decodeOp(op));
+            if (op == OP_MOD)
+                o(0x92); /* xchg %edx, %eax */
+#endif
+        }
+
+        virtual void clearECX() {
+            fprintf(stderr, "clearECX();\n");
+            o4(0xE3A01000);  // mov    r1, #0
+        }
+
+        virtual void pushEAX() {
+            fprintf(stderr, "pushEAX();\n");
+            o4(0xE92D0001);  // stmfd   sp!,{r0}
+        }
+
+        virtual void popECX() {
+            fprintf(stderr, "popECX();\n");
+            o4(0xE8BD0002);  // ldmfd   sp!,{r1}
+        }
+
+        virtual void storeEAXToAddressECX(bool isInt) {
+            fprintf(stderr, "storeEAXToAddressECX(%d);\n", isInt);
+            if (isInt) {
+                o4(0xE5810000); // str r0, [r1]
+            } else {
+                o4(0xE5C10000); // strb r0, [r1]
+            }
+        }
+
+        virtual void loadEAXIndirect(bool isInt) {
+            fprintf(stderr, "loadEAXIndirect(%d);\n", isInt);
+            if (isInt)
+                o4(0xE5900000); // ldr r0, [r0]
+            else
+                o4(0xE5D00000); // ldrb r0, [r0]
+        }
+
+        virtual void leaEAX(int ea) {
+            fprintf(stderr, "leaEAX(%d);\n", ea);
+            if (ea < LOCAL) {
+                // Local, fp relative
+                if (ea < -1023 || ea > 1023 || ((ea & 3) != 0)) {
+                    error("Offset out of range: %08x", ea);
+                }
+                if (ea < 0) {
+                    o4(0xE24B0F00 | (0xff & ((-ea) >> 2))); // sub    r0, fp, #ea
+                } else {
+                    o4(0xE28B0F00 | (0xff & (ea >> 2))); // add    r0, fp, #ea
+                }
+            } else {
+                // Global, absolute.
+                o4(0xE59F0000); //        ldr    r0, .L1
+                o4(0xEA000000); //        b .L99
+                o4(ea);         // .L1:   .word 0
+                                // .L99:
+            }
+        }
+
+        virtual void storeEAX(int ea) {
+            fprintf(stderr, "storeEAX(%d);\n", ea);
+            if (ea < LOCAL) {
+                // Local, fp relative
+                if (ea < -4095 || ea > 4095) {
+                    error("Offset out of range: %08x", ea);
+                }
+                if (ea < 0) {
+                    o4(0xE50B0000 | (0xfff & (-ea))); // str r0, [fp,#-ea]
+                } else {
+                    o4(0xE58B0000 | (0xfff & ea)); // str r0, [fp,#ea]
+                }
+            } else{
+                // Global, absolute
+                o4(0xE59F1000); //         ldr r1, .L1
+                o4(0xEA000000); //         b .L99
+                o4(ea);         // .L1:    .word 0
+                o4(0xE5810000); // .L99:   str r0, [r1]
+            }
+        }
+
+        virtual void loadEAX(int ea, bool isIncDec, int op) {
+            fprintf(stderr, "loadEAX(%d, %d, %d);\n", ea, isIncDec, op);
+            if (ea < LOCAL) {
+                // Local, fp relative
+                if (ea < -4095 || ea > 4095) {
+                    error("Offset out of range: %08x", ea);
+                }
+                if (ea < 0) {
+                    o4(0xE51B0000 | (0xfff & (-ea))); // ldr r0, [fp,#-ea]
+                } else {
+                    o4(0xE59B0000 | (0xfff & ea));    // ldr r0, [fp,#ea]
+                }
+            } else {
+                // Global, absolute
+                o4(0xE59F2000); //        ldr r2, .L1
+                o4(0xEA000000); //        b .L99
+                o4(ea);         // .L1:   .word ea
+                o4(0xE5920000); // .L99:  ldr r0, [r2]
+            }
+
+            if (isIncDec) {
+                switch (op) {
+                case OP_INCREMENT:
+                    o4(0xE2801001); // add r1, r0, #1
+                    break;
+                case OP_DECREMENT:
+                    o4(0xE2401001); // sub r1, r0, #1
+                    break;
+                default:
+                    error("unknown opcode: %d", op);
+                }
+                if (ea < LOCAL) {
+                    // Local, fp relative
+                    // Don't need range check, was already checked above
+                    if (ea < 0) {
+                        o4(0xE50B1000 | (0xfff & (-ea))); // str r1, [fp,#-ea]
+                    } else {
+                        o4(0xE58B1000 | (0xfff & ea));    // str r1, [fp,#ea]
+                    }
+                } else{
+                    // Global, absolute
+                    // r2 is already set up from before.
+                    o4(0xE5821000); // str r1, [r2]
+               }
+            }
+        }
+
+        virtual int beginFunctionCallArguments() {
+            fprintf(stderr, "beginFunctionCallArguments();\n");
+            return o4(0xE24DDF00); // Placeholder
+        }
+
+        virtual void storeEAToArg(int l) {
+            fprintf(stderr, "storeEAToArg(%d);\n", l);
+            if (l < 0 || l > 4096-4) {
+                error("l out of range for stack offset: 0x%08x", l);
+            }
+            o4(0xE58D0000 + l); // str r0, [sp, #4]
+        }
+
+        virtual void endFunctionCallArguments(int a, int l) {
+            fprintf(stderr, "endFunctionCallArguments(0x%08x, %d);\n", a, l);
+            if (l < 0 || l > 0x3FC) {
+                error("L out of range for stack adjustment: 0x%08x", l);
+            }
+            * (int*) a = 0xE24DDF00 | (l >> 2); // sub    sp, sp, #0 << 2
+            int argCount = l >> 2;
+            if (argCount > 0) {
+                int regArgCount = argCount > 4 ? 4 : argCount;
+                o4(0xE8BD0000 | ((1 << regArgCount) - 1)); // ldmfd   sp!,{}
+            }
+        }
+
+        virtual int callForward(int symbol) {
+            fprintf(stderr, "callForward(%d);\n", symbol);
+            // Forward calls are always short (local)
+            return o4(0xEB000000 | encodeAddress(symbol));
+        }
+
+        virtual void callRelative(int t) {
+            fprintf(stderr, "callRelative(%d);\n", t);
+            int abs = t + getPC() + jumpOffset();
+            fprintf(stderr, "abs=%d (0x%08x)\n", abs, abs);
+            if (t >= - (1 << 25) && t < (1 << 25)) {
+                o4(0xEB000000 | encodeAddress(t));
+            } else {
+                // Long call.
+                o4(0xE59FC000); //         ldr    r12, .L1
+                o4(0xEA000000); //         b .L99
+                o4(t - 12);     // .L1:    .word 0
+                o4(0xE08CC00F); // .L99:   add r12,pc
+                o4(0xE12FFF3C); //         blx r12
+           }
+        }
+
+        virtual void callIndirect(int l) {
+            fprintf(stderr, "callIndirect(%d);\n", l);
+            int argCount = l >> 2;
+            int poppedArgs = argCount > 4 ? 4 : argCount;
+            int adjustedL = l - (poppedArgs << 2);
+            if (adjustedL < 0 || adjustedL > 4096-4) {
+                error("l out of range for stack offset: 0x%08x", l);
+            }
+            o4(0xE59DC000 | (0xfff & adjustedL)); // ldr    r12, [sp,#adjustedL]
+            o4(0xE12FFF3C); // blx r12
+        }
+
+        virtual void adjustStackAfterCall(int l, bool isIndirect) {
+            fprintf(stderr, "adjustStackAfterCall(%d, %d);\n", l, isIndirect);
+            int argCount = l >> 2;
+            int stackArgs = argCount > 4 ? argCount - 4 : 0;
+            int stackUse = stackArgs + (isIndirect ? 1 : 0);
+            if (stackUse) {
+                if (stackUse < 0 || stackUse > 255) {
+                    error("L out of range for stack adjustment: 0x%08x", l);
+                }
+                o4(0xE28DDF00 | stackUse); // add    sp, sp, #stackUse << 2
+            }
+        }
+
+        virtual int jumpOffset() {
+            return 8;
+        }
+
+        /* output a symbol and patch all calls to it */
+        virtual void gsym(int t) {
+            fprintf(stderr, "gsym(0x%x)\n", t);
+            int n;
+            int base = getBase();
+            int pc = getPC();
+            fprintf(stderr, "pc = 0x%x\n", pc);
+            while (t) {
+                int data = * (int*) t;
+                int decodedOffset = ((BRANCH_REL_ADDRESS_MASK & data) << 2);
+                if (decodedOffset == 0) {
+                    n = 0;
+                } else {
+                    n = base + decodedOffset; /* next value */
+                }
+                *(int *) t = (data & ~BRANCH_REL_ADDRESS_MASK)
+                    | encodeRelAddress(pc - t - 8);
+                t = n;
+            }
+        }
+
+        virtual int disassemble(FILE* out) {
+               disasmOut = out;
+            disasm_interface_t  di;
+            di.di_readword = disassemble_readword;
+            di.di_printaddr = disassemble_printaddr;
+            di.di_printf = disassemble_printf;
+
+            int base = getBase();
+            int pc = getPC();
+            for(int i = base; i < pc; i += 4) {
+                fprintf(out, "%08x: %08x  ", i, *(int*) i);
+                ::disasm(&di, i, 0);
+            }
+            return 0;
+        }
+
+    private:
+        static FILE* disasmOut;
+
+        static u_int
+        disassemble_readword(u_int address)
+        {
+            return(*((u_int *)address));
+        }
+
+        static void
+        disassemble_printaddr(u_int address)
+        {
+            fprintf(disasmOut, "0x%08x", address);
+        }
+
+        static void
+        disassemble_printf(const char *fmt, ...) {
+            va_list ap;
+            va_start(ap, fmt);
+            vfprintf(disasmOut, fmt, ap);
+            va_end(ap);
+        }
+
+        static const int BRANCH_REL_ADDRESS_MASK = 0x00ffffff;
+
+        /** Encode a relative address that might also be
+         * a label.
+         */
+        int encodeAddress(int value) {
+            int base = getBase();
+            if (value >= base && value <= getPC() ) {
+                // This is a label, encode it relative to the base.
+                value = value - base;
+            }
+            return encodeRelAddress(value);
+        }
+
+        int encodeRelAddress(int value) {
+            return BRANCH_REL_ADDRESS_MASK & (value >> 2);
+        }
+
+        typedef int (*int2FnPtr)(int a, int b);
+        void callRuntime(int2FnPtr fn) {
+            o4(0xE59F2000); // ldr    r2, .L1
+            o4(0xEA000000); // b      .L99
+            o4((int) fn);   //.L1:  .word  fn
+            o4(0xE12FFF32); //.L99: blx    r2
+        }
+
+        static int runtime_DIV(int a, int b) {
+            return b / a;
+        }
+
+        static int runtime_MOD(int a, int b) {
+            return b % a;
+        }
+
+        void error(const char* fmt,...) {
+            va_list ap;
+            va_start(ap, fmt);
+            vfprintf(stderr, fmt, ap);
+            va_end(ap);
+            exit(12);
+        }
+    };
+
+#endif // PROVIDE_X86_CODEGEN
+
+#ifdef PROVIDE_X86_CODEGEN
+
+    class X86CodeGenerator : public CodeGenerator {
+    public:
+        X86CodeGenerator() {}
+        virtual ~X86CodeGenerator() {}
+
+        /* returns address to patch with local variable size
+        */
+        virtual int functionEntry(int argCount) {
+            o(0xe58955); /* push   %ebp, mov %esp, %ebp */
+            return oad(0xec81, 0); /* sub $xxx, %esp */
+        }
+
+        virtual void functionExit(int argCount, int localVariableAddress, int localVariableSize) {
+            o(0xc3c9); /* leave, ret */
+            *(int *) localVariableAddress = localVariableSize; /* save local variables */
+        }
+
+        /* load immediate value */
+        virtual void li(int t) {
+            oad(0xb8, t); /* mov $xx, %eax */
+        }
+
+        virtual int gjmp(int t) {
+            return psym(0xe9, t);
+        }
+
+        /* l = 0: je, l == 1: jne */
+        virtual int gtst(bool l, int t) {
+            o(0x0fc085); /* test %eax, %eax, je/jne xxx */
+            return psym(0x84 + l, t);
+        }
+
+        virtual void gcmp(int op) {
+            int t = decodeOp(op);
+            o(0xc139); /* cmp %eax,%ecx */
+            li(0);
+            o(0x0f); /* setxx %al */
+            o(t + 0x90);
+            o(0xc0);
+        }
+
+        virtual void genOp(int op) {
+            o(decodeOp(op));
+            if (op == OP_MOD)
+                o(0x92); /* xchg %edx, %eax */
+        }
+
+        virtual void clearECX() {
+            oad(0xb9, 0); /* movl $0, %ecx */
+        }
+
+        virtual void pushEAX() {
+            o(0x50); /* push %eax */
+        }
+
+        virtual void popECX() {
+            o(0x59); /* pop %ecx */
+        }
+
+        virtual void storeEAXToAddressECX(bool isInt) {
+            o(0x0188 + isInt); /* movl %eax/%al, (%ecx) */
+        }
+
+        virtual void loadEAXIndirect(bool isInt) {
+            if (isInt)
+                o(0x8b); /* mov (%eax), %eax */
+            else
+                o(0xbe0f); /* movsbl (%eax), %eax */
+            ob(0); /* add zero in code */
+        }
+
+        virtual void leaEAX(int ea) {
+            gmov(10, ea); /* leal EA, %eax */
+        }
+
+        virtual void storeEAX(int ea) {
+            gmov(6, ea); /* mov %eax, EA */
+        }
+
+        virtual void loadEAX(int ea, bool isIncDec, int op) {
+            gmov(8, ea); /* mov EA, %eax */
+            if (isIncDec) {
+                /* Implement post-increment or post decrement.
+                 */
+                gmov(0, ea); /* 83 ADD */
+                o(decodeOp(op));
+            }
+        }
+
+        virtual int beginFunctionCallArguments() {
+            return oad(0xec81, 0); /* sub $xxx, %esp */
+        }
+
+        virtual void storeEAToArg(int l) {
+            oad(0x248489, l); /* movl %eax, xxx(%esp) */
+        }
+
+        virtual void endFunctionCallArguments(int a, int l) {
+            * (int*) a = l;
+        }
+
+        virtual int callForward(int symbol) {
+            return psym(0xe8, symbol); /* call xxx */
+        }
+
+        virtual void callRelative(int t) {
+            psym(0xe8, t); /* call xxx */
+        }
+
+        virtual void callIndirect(int l) {
+            oad(0x2494ff, l); /* call *xxx(%esp) */
+        }
+
+        virtual void adjustStackAfterCall(int l, bool isIndirect) {
+            if (isIndirect) {
+                l += 4;
+            }
+            oad(0xc481, l); /* add $xxx, %esp */
+        }
+
+        virtual int jumpOffset() {
+            return 5;
+        }
+
+        virtual int disassemble(FILE* out) {
+            return 1;
+        }
+
+        /* output a symbol and patch all calls to it */
+        virtual void gsym(int t) {
+            int n;
+            int pc = getPC();
+            while (t) {
+                n = *(int *) t; /* next value */
+                *(int *) t = pc - t - 4;
+                t = n;
+            }
+        }
+
+    private:
+
+        /** Output 1 to 4 bytes.
+         *
+         */
+        void o(int n) {
+            /* cannot use unsigned, so we must do a hack */
+            while (n && n != -1) {
+                ob(n & 0xff);
+                n = n >> 8;
+            }
+        }
+
+        /* psym is used to put an instruction with a data field which is a
+         reference to a symbol. It is in fact the same as oad ! */
+        int psym(int n, int t) {
+            return oad(n, t);
+        }
+
+        /* instruction + address */
+        int oad(int n, int t) {
+            o(n);
+            int result = getPC();
+            o4(t);
+            return result;
+        }
+
+
+        static const int operatorHelper[];
+
+        int decodeOp(int op) {
+            if (op < 0 || op > OP_COUNT) {
+                fprintf(stderr, "Out-of-range operator: %d\n", op);
+                exit(1);
+            }
+            return operatorHelper[op];
+        }
+
+        void gmov(int l, int t) {
+            o(l + 0x83);
+            oad((t < LOCAL) << 7 | 5, t);
+        }
+    };
+
+#endif // PROVIDE_X86_CODEGEN
+
+    /* vars: value of variables
+     loc : local variable index
+     glo : global variable index
+     ind : output code ptr
+     rsym: return symbol
+     prog: output code
+     dstk: define stack
+     dptr, dch: macro state
+     */
+    intptr_t tok, tokc, tokl, ch, vars, rsym, loc, glo, sym_stk, dstk,
+            dptr, dch, last_id;
+    void* pSymbolBase;
+    void* pGlobalBase;
+    void* pVarsBase;
+    FILE* file;
+
+    CodeBuf codeBuf;
+    CodeGenerator* pGen;
+
+    static const int ALLOC_SIZE = 99999;
+
+    /* depends on the init string */
+    static const int TOK_STR_SIZE = 48;
+    static const int TOK_IDENT = 0x100;
+    static const int TOK_INT = 0x100;
+    static const int TOK_IF = 0x120;
+    static const int TOK_ELSE = 0x138;
+    static const int TOK_WHILE = 0x160;
+    static const int TOK_BREAK = 0x190;
+    static const int TOK_RETURN = 0x1c0;
+    static const int TOK_FOR = 0x1f8;
+    static const int TOK_DEFINE = 0x218;
+    static const int TOK_MAIN = 0x250;
+
+    static const int TOK_DUMMY = 1;
+    static const int TOK_NUM = 2;
+
+    static const int LOCAL = 0x200;
+
+    static const int SYM_FORWARD = 0;
+    static const int SYM_DEFINE = 1;
+
+    /* tokens in string heap */
+    static const int TAG_TOK = ' ';
+    static const int TAG_MACRO = 2;
+
+    static const int OP_INCREMENT = 0;
+    static const int OP_DECREMENT = 1;
+    static const int OP_MUL = 2;
+    static const int OP_DIV = 3;
+    static const int OP_MOD = 4;
+    static const int OP_PLUS = 5;
+    static const int OP_MINUS = 6;
+    static const int OP_SHIFT_LEFT = 7;
+    static const int OP_SHIFT_RIGHT = 8;
+    static const int OP_LESS_EQUAL = 9;
+    static const int OP_GREATER_EQUAL = 10;
+    static const int OP_LESS = 11;
+    static const int OP_GREATER = 12;
+    static const int OP_EQUALS = 13;
+    static const int OP_NOT_EQUALS = 14;
+    static const int OP_LOGICAL_AND = 15;
+    static const int OP_LOGICAL_OR = 16;
+    static const int OP_BIT_AND = 17;
+    static const int OP_BIT_XOR = 18;
+    static const int OP_BIT_OR = 19;
+    static const int OP_BIT_NOT = 20;
+    static const int OP_LOGICAL_NOT = 21;
+    static const int OP_COUNT = 22;
+
+    /* Operators are searched from front, the two-character operators appear
+     * before the single-character operators with the same first character.
+     * @ is used to pad out single-character operators.
+     */
+    static const char* operatorChars;
+    static const char operatorLevel[];
+
+    void pdef(int t) {
+        *(char *) dstk++ = t;
+    }
+
+    void inp() {
+        if (dptr) {
+            ch = *(char *) dptr++;
+            if (ch == TAG_MACRO) {
+                dptr = 0;
+                ch = dch;
+            }
+        } else
+            ch = fgetc(file);
+        /*    printf("ch=%c 0x%x\n", ch, ch); */
+    }
+
+    int isid() {
+        return isalnum(ch) | (ch == '_');
+    }
+
+    /* read a character constant */
+    void getq() {
+        if (ch == '\\') {
+            inp();
+            if (ch == 'n')
+                ch = '\n';
+        }
+    }
+
+    void next() {
+        int l, a;
+
+        while (isspace(ch) | (ch == '#')) {
+            if (ch == '#') {
+                inp();
+                next();
+                if (tok == TOK_DEFINE) {
+                    next();
+                    pdef(TAG_TOK); /* fill last ident tag */
+                    *(int *) tok = SYM_DEFINE;
+                    *(int *) (tok + 4) = dstk; /* define stack */
+                }
+                /* well we always save the values ! */
+                while (ch != '\n') {
+                    pdef(ch);
+                    inp();
+                }
+                pdef(ch);
+                pdef(TAG_MACRO);
+            }
+            inp();
+        }
+        tokl = 0;
+        tok = ch;
+        /* encode identifiers & numbers */
+        if (isid()) {
+            pdef(TAG_TOK);
+            last_id = dstk;
+            while (isid()) {
+                pdef(ch);
+                inp();
+            }
+            if (isdigit(tok)) {
+                tokc = strtol((char*) last_id, 0, 0);
+                tok = TOK_NUM;
+            } else {
+                *(char *) dstk = TAG_TOK; /* no need to mark end of string (we
+                 suppose data is initialized to zero by calloc) */
+                tok = (intptr_t) (strstr((char*) sym_stk, (char*) (last_id - 1))
+                        - sym_stk);
+                *(char *) dstk = 0; /* mark real end of ident for dlsym() */
+                tok = tok * 8 + TOK_IDENT;
+                if (tok > TOK_DEFINE) {
+                    tok = vars + tok;
+                    /*        printf("tok=%s %x\n", last_id, tok); */
+                    /* define handling */
+                    if (*(int *) tok == SYM_DEFINE) {
+                        dptr = *(int *) (tok + 4);
+                        dch = ch;
+                        inp();
+                        next();
+                    }
+                }
+            }
+        } else {
+            inp();
+            if (tok == '\'') {
+                tok = TOK_NUM;
+                getq();
+                tokc = ch;
+                inp();
+                inp();
+            } else if ((tok == '/') & (ch == '*')) {
+                inp();
+                while (ch) {
+                    while (ch != '*')
+                        inp();
+                    inp();
+                    if (ch == '/')
+                        ch = 0;
+                }
+                inp();
+                next();
+            } else if ((tok == '/') & (ch == '/')) {
+                inp();
+                while (ch && (ch != '\n')) {
+                    inp();
+                }
+                inp();
+                next();
+            } else {
+                const char* t = operatorChars;
+                int opIndex = 0;
+                while ((l = *t++) != 0) {
+                    a = *t++;
+                    tokl = operatorLevel[opIndex];
+                    tokc = opIndex;
+                    if ((l == tok) & ((a == ch) | (a == '@'))) {
+#if 0
+                        printf("%c%c -> tokl=%d tokc=0x%x\n",
+                                l, a, tokl, tokc);
+#endif
+                        if (a == ch) {
+                            inp();
+                            tok = TOK_DUMMY; /* dummy token for double tokens */
+                        }
+                        break;
+                    }
+                    opIndex++;
+                }
+                if (l == 0) {
+                    tokl = 0;
+                    tokc = 0;
+                }
+            }
+        }
+#if 0
+        {
+            int p;
+
+            printf("tok=0x%x ", tok);
+            if (tok >= TOK_IDENT) {
+                printf("'");
+                if (tok> TOK_DEFINE)
+                p = sym_stk + 1 + (tok - vars - TOK_IDENT) / 8;
+                else
+                p = sym_stk + 1 + (tok - TOK_IDENT) / 8;
+                while (*(char *)p != TAG_TOK && *(char *)p)
+                printf("%c", *(char *)p++);
+                printf("'\n");
+            } else if (tok == TOK_NUM) {
+                printf("%d\n", tokc);
+            } else {
+                printf("'%c'\n", tok);
+            }
+        }
+#endif
+    }
+
+    void error(const char *fmt, ...) {
+        va_list ap;
+
+        va_start(ap, fmt);
+        fprintf(stderr, "%ld: ", ftell((FILE *) file));
+        vfprintf(stderr, fmt, ap);
+        fprintf(stderr, "\n");
+        va_end(ap);
+        exit(1);
+    }
+
+    void skip(intptr_t c) {
+        if (tok != c) {
+            error("'%c' expected", c);
+        }
+        next();
+    }
+
+    /* l is one if '=' parsing wanted (quick hack) */
+    void unary(intptr_t l) {
+        intptr_t n, t, a, c;
+        t = 0;
+        n = 1; /* type of expression 0 = forward, 1 = value, other =
+         lvalue */
+        if (tok == '\"') {
+            pGen->li(glo);
+            while (ch != '\"') {
+                getq();
+                *(char *) glo++ = ch;
+                inp();
+            }
+            *(char *) glo = 0;
+            glo = (glo + 4) & -4; /* align heap */
+            inp();
+            next();
+        } else {
+            c = tokl;
+            a = tokc;
+            t = tok;
+            next();
+            if (t == TOK_NUM) {
+                pGen->li(a);
+            } else if (c == 2) {
+                /* -, +, !, ~ */
+                unary(0);
+                pGen->clearECX();
+                if (t == '!')
+                    pGen->gcmp(a);
+                else
+                    pGen->genOp(a);
+            } else if (t == '(') {
+                expr();
+                skip(')');
+            } else if (t == '*') {
+                /* parse cast */
+                skip('(');
+                t = tok; /* get type */
+                next(); /* skip int/char/void */
+                next(); /* skip '*' or '(' */
+                if (tok == '*') {
+                    /* function type */
+                    skip('*');
+                    skip(')');
+                    skip('(');
+                    skip(')');
+                    t = 0;
+                }
+                skip(')');
+                unary(0);
+                if (tok == '=') {
+                    next();
+                    pGen->pushEAX();
+                    expr();
+                    pGen->popECX();
+                    pGen->storeEAXToAddressECX(t == TOK_INT);
+                } else if (t) {
+                    pGen->loadEAXIndirect(t == TOK_INT);
+                }
+            } else if (t == '&') {
+                pGen->leaEAX(*(int *) tok);
+                next();
+            } else {
+                n = *(int *) t;
+                /* forward reference: try dlsym */
+                if (!n) {
+                    n = (intptr_t) dlsym(RTLD_DEFAULT, (char*) last_id);
+                }
+                if ((tok == '=') & l) {
+                    /* assignment */
+                    next();
+                    expr();
+                    pGen->storeEAX(n);
+                } else if (tok != '(') {
+                    /* variable */
+                    pGen->loadEAX(n, tokl == 11, tokc);
+                    if (tokl == 11) {
+                        next();
+                    }
+                }
+            }
+        }
+
+        /* function call */
+        if (tok == '(') {
+            if (n == 1)
+                pGen->pushEAX();
+
+            /* push args and invert order */
+            a = pGen->beginFunctionCallArguments();
+            next();
+            l = 0;
+            while (tok != ')') {
+                expr();
+                pGen->storeEAToArg(l);
+                if (tok == ',')
+                    next();
+                l = l + 4;
+            }
+            pGen->endFunctionCallArguments(a, l);
+            next();
+            if (!n) {
+                /* forward reference */
+                t = t + 4;
+                *(int *) t = pGen->callForward(*(int *) t);
+            } else if (n == 1) {
+                pGen->callIndirect(l);
+            } else {
+                pGen->callRelative(n - codeBuf.getPC() - pGen->jumpOffset());
+            }
+            if (l | (n == 1))
+                pGen->adjustStackAfterCall(l, n == 1);
+        }
+    }
+
+    void sum(intptr_t l) {
+        intptr_t t, n, a;
+        t = 0;
+        if (l-- == 1)
+            unary(1);
+        else {
+            sum(l);
+            a = 0;
+            while (l == tokl) {
+                n = tok;
+                t = tokc;
+                next();
+
+                if (l > 8) {
+                    a = pGen->gtst(t == OP_LOGICAL_OR, a); /* && and || output code generation */
+                    sum(l);
+                } else {
+                    pGen->pushEAX();
+                    sum(l);
+                    pGen->popECX();
+
+                    if ((l == 4) | (l == 5)) {
+                        pGen->gcmp(t);
+                    } else {
+                        pGen->genOp(t);
+                    }
+                }
+            }
+            /* && and || output code generation */
+            if (a && l > 8) {
+                a = pGen->gtst(t == OP_LOGICAL_OR, a);
+                pGen->li(t != OP_LOGICAL_OR);
+                pGen->gjmp(5); /* jmp $ + 5 (sizeof li, FIXME for ARM) */
+                pGen->gsym(a);
+                pGen->li(t == OP_LOGICAL_OR);
+            }
+        }
+    }
+
+    void expr() {
+        sum(11);
+    }
+
+    int test_expr() {
+        expr();
+        return pGen->gtst(0, 0);
+    }
+
+    void block(intptr_t l) {
+        intptr_t a, n, t;
+
+        if (tok == TOK_IF) {
+            next();
+            skip('(');
+            a = test_expr();
+            skip(')');
+            block(l);
+            if (tok == TOK_ELSE) {
+                next();
+                n = pGen->gjmp(0); /* jmp */
+                pGen->gsym(a);
+                block(l);
+                pGen->gsym(n); /* patch else jmp */
+            } else {
+                pGen->gsym(a); /* patch if test */
+            }
+        } else if ((tok == TOK_WHILE) | (tok == TOK_FOR)) {
+            t = tok;
+            next();
+            skip('(');
+            if (t == TOK_WHILE) {
+                n = codeBuf.getPC(); // top of loop, target of "next" iteration
+                a = test_expr();
+            } else {
+                if (tok != ';')
+                    expr();
+                skip(';');
+                n = codeBuf.getPC();
+                a = 0;
+                if (tok != ';')
+                    a = test_expr();
+                skip(';');
+                if (tok != ')') {
+                    t = pGen->gjmp(0);
+                    expr();
+                    pGen->gjmp(n - codeBuf.getPC() - pGen->jumpOffset());
+                    pGen->gsym(t);
+                    n = t + 4;
+                }
+            }
+            skip(')');
+            block((intptr_t) &a);
+            pGen->gjmp(n - codeBuf.getPC() - pGen->jumpOffset()); /* jmp */
+            pGen->gsym(a);
+        } else if (tok == '{') {
+            next();
+            /* declarations */
+            decl(1);
+            while (tok != '}')
+                block(l);
+            next();
+        } else {
+            if (tok == TOK_RETURN) {
+                next();
+                if (tok != ';')
+                    expr();
+                rsym = pGen->gjmp(rsym); /* jmp */
+            } else if (tok == TOK_BREAK) {
+                next();
+                *(int *) l = pGen->gjmp(*(int *) l);
+            } else if (tok != ';')
+                expr();
+            skip(';');
+        }
+    }
+
+    /* 'l' is true if local declarations */
+    void decl(bool l) {
+        intptr_t a;
+
+        while ((tok == TOK_INT) | ((tok != -1) & (!l))) {
+            if (tok == TOK_INT) {
+                next();
+                while (tok != ';') {
+                    if (l) {
+                        loc = loc + 4;
+                        *(int *) tok = -loc;
+                    } else {
+                        *(int *) tok = glo;
+                        glo = glo + 4;
+                    }
+                    next();
+                    if (tok == ',')
+                        next();
+                }
+                skip(';');
+            } else {
+                /* patch forward references (XXX: do not work for function
+                 pointers) */
+                pGen->gsym(*(int *) (tok + 4));
+                /* put function address */
+                *(int *) tok = codeBuf.getPC();
+                next();
+                skip('(');
+                a = 8;
+                int argCount = 0;
+                while (tok != ')') {
+                    /* read param name and compute offset */
+                    *(int *) tok = a;
+                    a = a + 4;
+                    next();
+                    if (tok == ',')
+                        next();
+                    argCount++;
+                }
+                next(); /* skip ')' */
+                rsym = loc = 0;
+                a = pGen->functionEntry(argCount);
+                block(0);
+                pGen->gsym(rsym);
+                pGen->functionExit(argCount, a, loc);
+            }
+        }
+    }
+
+    void cleanup() {
+        if (sym_stk != 0) {
+            free((void*) sym_stk);
+            sym_stk = 0;
+        }
+        if (pGlobalBase != 0) {
+            free((void*) pGlobalBase);
+            pGlobalBase = 0;
+        }
+        if (pVarsBase != 0) {
+            free(pVarsBase);
+            pVarsBase = 0;
+        }
+        if (pGen) {
+            delete pGen;
+            pGen = 0;
+        }
+    }
+
+    void clear() {
+        tok = 0;
+        tokc = 0;
+        tokl = 0;
+        ch = 0;
+        vars = 0;
+        rsym = 0;
+        loc = 0;
+        glo = 0;
+        sym_stk = 0;
+        dstk = 0;
+        dptr = 0;
+        dch = 0;
+        last_id = 0;
+        file = 0;
+        pGlobalBase = 0;
+        pVarsBase = 0;
+        pGen = 0;
+    }
+
+    void setArchitecture(const char* architecture) {
+        delete pGen;
+        pGen = 0;
+
+        if (architecture != NULL) {
+#ifdef PROVIDE_ARM_CODEGEN
+            if (! pGen && strcmp(architecture, "arm") == 0) {
+                pGen = new ARMCodeGenerator();
+            }
+#endif
+#ifdef PROVIDE_X86_CODEGEN
+            if (! pGen && strcmp(architecture, "x86") == 0) {
+                pGen = new X86CodeGenerator();
+            }
+#endif
+            if (!pGen ) {
+                fprintf(stderr, "Unknown architecture %s\n", architecture);
+            }
+        }
+
+        if (pGen == NULL) {
+#if defined(DEFAULT_ARM_CODEGEN)
+            pGen = new ARMCodeGenerator();
+#elif defined(DEFAULT_X86_CODEGEN)
+            pGen = new X86CodeGenerator();
+#endif
+        }
+        if (pGen == NULL) {
+            fprintf(stderr, "No code generator defined.");
+        }
+    }
+
+public:
+    struct args {
+        args() {
+            architecture = 0;
+        }
+        const char* architecture;
+    };
+
+    Compiler() {
+        clear();
+    }
+
+    ~Compiler() {
+        cleanup();
+    }
+
+    int compile(FILE* in, args& args) {
+        cleanup();
+        clear();
+        codeBuf.init(ALLOC_SIZE);
+        setArchitecture(args.architecture);
+        if (!pGen) {
+            return -1;
+        }
+        pGen->init(&codeBuf);
+        file = in;
+        sym_stk = (intptr_t) calloc(1, ALLOC_SIZE);
+        dstk = (intptr_t) strcpy((char*) sym_stk,
+                " int if else while break return for define main ")
+                + TOK_STR_SIZE;
+        pGlobalBase = calloc(1, ALLOC_SIZE);
+        glo = (intptr_t) pGlobalBase;
+        pVarsBase = calloc(1, ALLOC_SIZE);
+        vars = (intptr_t) pVarsBase;
+        inp();
+        next();
+        decl(0);
+        pGen->finishCompile();
+        return 0;
+    }
+
+    int run(int argc, char** argv) {
+        typedef int (*mainPtr)(int argc, char** argv);
+        mainPtr aMain = (mainPtr) *(int*) (vars + TOK_MAIN);
+        if (!aMain) {
+            fprintf(stderr, "Could not find function \"main\".\n");
+            return -1;
+        }
+        return aMain(argc, argv);
+    }
+
+    int dump(FILE* out) {
+        fwrite(codeBuf.getBase(), 1, codeBuf.getSize(), out);
+        return 0;
+    }
+
+    int disassemble(FILE* out) {
+        return pGen->disassemble(out);
+    }
+
+};
+
+const char* Compiler::operatorChars =
+    "++--*@/@%@+@-@<<>><=>=<@>@==!=&&||&@^@|@~@!@";
+
+const char Compiler::operatorLevel[] =
+    {11, 11, 1, 1, 1, 2, 2, 3, 3, 4, 4, 4, 4,
+            5, 5, /* ==, != */
+            9, 10, /* &&, || */
+            6, 7, 8, /* & ^ | */
+            2, 2 /* ~ ! */
+            };
+
+#ifdef PROVIDE_ARM_CODEGEN
+FILE* Compiler::ARMCodeGenerator::disasmOut;
+#endif
+
+#ifdef PROVIDE_X86_CODEGEN
+const int Compiler::X86CodeGenerator::operatorHelper[] = {
+        0x1,     // ++
+        0xff,    // --
+        0xc1af0f, // *
+        0xf9f79991, // /
+        0xf9f79991, // % (With manual assist to swap results)
+        0xc801, // +
+        0xd8f7c829, // -
+        0xe0d391, // <<
+        0xf8d391, // >>
+        0xe, // <=
+        0xd, // >=
+        0xc, // <
+        0xf, // >
+        0x4, // ==
+        0x5, // !=
+        0x0, // &&
+        0x1, // ||
+        0xc821, // &
+        0xc831, // ^
+        0xc809, // |
+        0xd0f7, // ~
+        0x4     // !
+};
+#endif
+
+} // namespace acc
+
+// This is a separate function so it can easily be set by breakpoint in gdb.
+int run(acc::Compiler& c, int argc, char** argv) {
+    return c.run(argc, argv);
+}
+
+int main(int argc, char** argv) {
+    bool doDump = false;
+    bool doDisassemble = false;
+    const char* inFile = NULL;
+    const char* outFile = NULL;
+    const char* architecture = NULL;
+    int i;
+    for (i = 1; i < argc; i++) {
+        char* arg = argv[i];
+        if (arg[0] == '-') {
+            switch (arg[1]) {
+            case 'a':
+                if (i + 1 >= argc) {
+                    fprintf(stderr, "Expected architecture after -a\n");
+                    return 2;
+                }
+                architecture = argv[i+1];
+                i += 1;
+                break;
+            case 'd':
+                if (i + 1 >= argc) {
+                    fprintf(stderr, "Expected filename after -d\n");
+                    return 2;
+                }
+                doDump = true;
+                outFile = argv[i + 1];
+                i += 1;
+                break;
+            case 'S':
+                doDisassemble = true;
+                break;
+            default:
+                fprintf(stderr, "Unrecognized flag %s\n", arg);
+                return 3;
+            }
+        } else if (inFile == NULL) {
+            inFile = arg;
+        } else {
+            break;
+        }
+    }
+
+    FILE* in = stdin;
+    if (inFile) {
+        in = fopen(inFile, "r");
+        if (!in) {
+            fprintf(stderr, "Could not open input file %s\n", inFile);
+            return 1;
+        }
+    }
+    acc::Compiler compiler;
+    acc::Compiler::args args;
+    if (architecture != NULL) {
+        args.architecture = architecture;
+    }
+    int compileResult = compiler.compile(in, args);
+    if (in != stdin) {
+        fclose(in);
+    }
+    if (compileResult) {
+        fprintf(stderr, "Compile failed: %d\n", compileResult);
+        return 6;
+    }
+    if (doDisassemble) {
+        compiler.disassemble(stderr);
+    }
+    if (doDump) {
+        FILE* save = fopen(outFile, "w");
+        if (!save) {
+            fprintf(stderr, "Could not open output file %s\n", outFile);
+            return 5;
+        }
+        compiler.dump(save);
+        fclose(save);
+    } else {
+        fprintf(stderr, "Executing compiled code:\n");
+        int codeArgc = argc - i + 1;
+        char** codeArgv = argv + i - 1;
+        codeArgv[0] = (char*) (inFile ? inFile : "stdin");
+        int result = run(compiler, codeArgc, codeArgv);
+        fprintf(stderr, "result: %d\n", result);
+        return result;
+    }
+
+    return 0;
+}
diff --git a/libacc/armreg.h b/libacc/armreg.h
new file mode 100644
index 0000000..fde81ba
--- /dev/null
+++ b/libacc/armreg.h
@@ -0,0 +1,300 @@
+/*	$NetBSD: armreg.h,v 1.28 2003/10/31 16:30:15 scw Exp $	*/
+
+/*-
+ * Copyright (c) 1998, 2001 Ben Harris
+ * Copyright (c) 1994-1996 Mark Brinicombe.
+ * Copyright (c) 1994 Brini.
+ * All rights reserved.
+ *
+ * This code is derived from software written for Brini by Mark Brinicombe
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. 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.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by Brini.
+ * 4. The name of the company nor the name of the author may be used to
+ *    endorse or promote products derived from this software without specific
+ *    prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY BRINI ``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 BRINI 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.
+ *
+ * $FreeBSD: /repoman/r/ncvs/src/sys/arm/include/armreg.h,v 1.3 2005/11/21 19:06:25 cognet Exp $
+ */
+
+#ifndef MACHINE_ARMREG_H
+#define MACHINE_ARMREG_H
+#define INSN_SIZE	4
+#define INSN_COND_MASK	0xf0000000	/* Condition mask */
+#define PSR_MODE        0x0000001f      /* mode mask */
+#define PSR_USR26_MODE  0x00000000
+#define PSR_FIQ26_MODE  0x00000001
+#define PSR_IRQ26_MODE  0x00000002
+#define PSR_SVC26_MODE  0x00000003
+#define PSR_USR32_MODE  0x00000010
+#define PSR_FIQ32_MODE  0x00000011
+#define PSR_IRQ32_MODE  0x00000012
+#define PSR_SVC32_MODE  0x00000013
+#define PSR_ABT32_MODE  0x00000017
+#define PSR_UND32_MODE  0x0000001b
+#define PSR_SYS32_MODE  0x0000001f
+#define PSR_32_MODE     0x00000010
+#define PSR_FLAGS	0xf0000000    /* flags */
+
+#define PSR_C_bit (1 << 29)       /* carry */
+
+/* The high-order byte is always the implementor */
+#define CPU_ID_IMPLEMENTOR_MASK	0xff000000
+#define CPU_ID_ARM_LTD		0x41000000 /* 'A' */
+#define CPU_ID_DEC		0x44000000 /* 'D' */
+#define CPU_ID_INTEL		0x69000000 /* 'i' */
+#define	CPU_ID_TI		0x54000000 /* 'T' */
+
+/* How to decide what format the CPUID is in. */
+#define CPU_ID_ISOLD(x)		(((x) & 0x0000f000) == 0x00000000)
+#define CPU_ID_IS7(x)		(((x) & 0x0000f000) == 0x00007000)
+#define CPU_ID_ISNEW(x)		(!CPU_ID_ISOLD(x) && !CPU_ID_IS7(x))
+
+/* On ARM3 and ARM6, this byte holds the foundry ID. */
+#define CPU_ID_FOUNDRY_MASK	0x00ff0000
+#define CPU_ID_FOUNDRY_VLSI	0x00560000
+
+/* On ARM7 it holds the architecture and variant (sub-model) */
+#define CPU_ID_7ARCH_MASK	0x00800000
+#define CPU_ID_7ARCH_V3		0x00000000
+#define CPU_ID_7ARCH_V4T	0x00800000
+#define CPU_ID_7VARIANT_MASK	0x007f0000
+
+/* On more recent ARMs, it does the same, but in a different format */
+#define CPU_ID_ARCH_MASK	0x000f0000
+#define CPU_ID_ARCH_V3		0x00000000
+#define CPU_ID_ARCH_V4		0x00010000
+#define CPU_ID_ARCH_V4T		0x00020000
+#define CPU_ID_ARCH_V5		0x00030000
+#define CPU_ID_ARCH_V5T		0x00040000
+#define CPU_ID_ARCH_V5TE	0x00050000
+#define CPU_ID_VARIANT_MASK	0x00f00000
+
+/* Next three nybbles are part number */
+#define CPU_ID_PARTNO_MASK	0x0000fff0
+
+/* Intel XScale has sub fields in part number */
+#define CPU_ID_XSCALE_COREGEN_MASK	0x0000e000 /* core generation */
+#define CPU_ID_XSCALE_COREREV_MASK	0x00001c00 /* core revision */
+#define CPU_ID_XSCALE_PRODUCT_MASK	0x000003f0 /* product number */
+
+/* And finally, the revision number. */
+#define CPU_ID_REVISION_MASK	0x0000000f
+
+/* Individual CPUs are probably best IDed by everything but the revision. */
+#define CPU_ID_CPU_MASK		0xfffffff0
+
+/* Fake CPU IDs for ARMs without CP15 */
+#define CPU_ID_ARM2		0x41560200
+#define CPU_ID_ARM250		0x41560250
+
+/* Pre-ARM7 CPUs -- [15:12] == 0 */
+#define CPU_ID_ARM3		0x41560300
+#define CPU_ID_ARM600		0x41560600
+#define CPU_ID_ARM610		0x41560610
+#define CPU_ID_ARM620		0x41560620
+
+/* ARM7 CPUs -- [15:12] == 7 */
+#define CPU_ID_ARM700		0x41007000 /* XXX This is a guess. */
+#define CPU_ID_ARM710		0x41007100
+#define CPU_ID_ARM7500		0x41027100 /* XXX This is a guess. */
+#define CPU_ID_ARM710A		0x41047100 /* inc ARM7100 */
+#define CPU_ID_ARM7500FE	0x41077100
+#define CPU_ID_ARM710T		0x41807100
+#define CPU_ID_ARM720T		0x41807200
+#define CPU_ID_ARM740T8K	0x41807400 /* XXX no MMU, 8KB cache */
+#define CPU_ID_ARM740T4K	0x41817400 /* XXX no MMU, 4KB cache */
+
+/* Post-ARM7 CPUs */
+#define CPU_ID_ARM810		0x41018100
+#define CPU_ID_ARM920T		0x41129200
+#define CPU_ID_ARM920T_ALT	0x41009200
+#define CPU_ID_ARM922T		0x41029220
+#define CPU_ID_ARM940T		0x41029400 /* XXX no MMU */
+#define CPU_ID_ARM946ES		0x41049460 /* XXX no MMU */
+#define	CPU_ID_ARM966ES		0x41049660 /* XXX no MMU */
+#define	CPU_ID_ARM966ESR1	0x41059660 /* XXX no MMU */
+#define CPU_ID_ARM1020E		0x4115a200 /* (AKA arm10 rev 1) */
+#define CPU_ID_ARM1022ES	0x4105a220
+#define CPU_ID_SA110		0x4401a100
+#define CPU_ID_SA1100		0x4401a110
+#define	CPU_ID_TI925T		0x54029250
+#define CPU_ID_SA1110		0x6901b110
+#define CPU_ID_IXP1200		0x6901c120
+#define CPU_ID_80200		0x69052000
+#define CPU_ID_PXA250    	0x69052100 /* sans core revision */
+#define CPU_ID_PXA210    	0x69052120
+#define CPU_ID_PXA250A		0x69052100 /* 1st version Core */
+#define CPU_ID_PXA210A		0x69052120 /* 1st version Core */
+#define CPU_ID_PXA250B		0x69052900 /* 3rd version Core */
+#define CPU_ID_PXA210B		0x69052920 /* 3rd version Core */
+#define CPU_ID_PXA250C		0x69052d00 /* 4th version Core */
+#define CPU_ID_PXA210C		0x69052d20 /* 4th version Core */
+#define	CPU_ID_80321_400	0x69052420
+#define	CPU_ID_80321_600	0x69052430
+#define	CPU_ID_80321_400_B0	0x69052c20
+#define	CPU_ID_80321_600_B0	0x69052c30
+#define	CPU_ID_IXP425_533	0x690541c0
+#define	CPU_ID_IXP425_400	0x690541d0
+#define	CPU_ID_IXP425_266	0x690541f0
+
+/* ARM3-specific coprocessor 15 registers */
+#define ARM3_CP15_FLUSH		1
+#define ARM3_CP15_CONTROL	2
+#define ARM3_CP15_CACHEABLE	3
+#define ARM3_CP15_UPDATEABLE	4
+#define ARM3_CP15_DISRUPTIVE	5	
+
+/* ARM3 Control register bits */
+#define ARM3_CTL_CACHE_ON	0x00000001
+#define ARM3_CTL_SHARED		0x00000002
+#define ARM3_CTL_MONITOR	0x00000004
+
+/*
+ * Post-ARM3 CP15 registers:
+ *
+ *	1	Control register
+ *
+ *	2	Translation Table Base
+ *
+ *	3	Domain Access Control
+ *
+ *	4	Reserved
+ *
+ *	5	Fault Status
+ *
+ *	6	Fault Address
+ *
+ *	7	Cache/write-buffer Control
+ *
+ *	8	TLB Control
+ *
+ *	9	Cache Lockdown
+ *
+ *	10	TLB Lockdown
+ *
+ *	11	Reserved
+ *
+ *	12	Reserved
+ *
+ *	13	Process ID (for FCSE)
+ *
+ *	14	Reserved
+ *
+ *	15	Implementation Dependent
+ */
+
+/* Some of the definitions below need cleaning up for V3/V4 architectures */
+
+/* CPU control register (CP15 register 1) */
+#define CPU_CONTROL_MMU_ENABLE	0x00000001 /* M: MMU/Protection unit enable */
+#define CPU_CONTROL_AFLT_ENABLE	0x00000002 /* A: Alignment fault enable */
+#define CPU_CONTROL_DC_ENABLE	0x00000004 /* C: IDC/DC enable */
+#define CPU_CONTROL_WBUF_ENABLE 0x00000008 /* W: Write buffer enable */
+#define CPU_CONTROL_32BP_ENABLE 0x00000010 /* P: 32-bit exception handlers */
+#define CPU_CONTROL_32BD_ENABLE 0x00000020 /* D: 32-bit addressing */
+#define CPU_CONTROL_LABT_ENABLE 0x00000040 /* L: Late abort enable */
+#define CPU_CONTROL_BEND_ENABLE 0x00000080 /* B: Big-endian mode */
+#define CPU_CONTROL_SYST_ENABLE 0x00000100 /* S: System protection bit */
+#define CPU_CONTROL_ROM_ENABLE	0x00000200 /* R: ROM protection bit */
+#define CPU_CONTROL_CPCLK	0x00000400 /* F: Implementation defined */
+#define CPU_CONTROL_BPRD_ENABLE 0x00000800 /* Z: Branch prediction enable */
+#define CPU_CONTROL_IC_ENABLE   0x00001000 /* I: IC enable */
+#define CPU_CONTROL_VECRELOC	0x00002000 /* V: Vector relocation */
+#define CPU_CONTROL_ROUNDROBIN	0x00004000 /* RR: Predictable replacement */
+#define CPU_CONTROL_V4COMPAT	0x00008000 /* L4: ARMv4 compat LDR R15 etc */
+
+#define CPU_CONTROL_IDC_ENABLE	CPU_CONTROL_DC_ENABLE
+
+/* XScale Auxillary Control Register (CP15 register 1, opcode2 1) */
+#define	XSCALE_AUXCTL_K		0x00000001 /* dis. write buffer coalescing */
+#define	XSCALE_AUXCTL_P		0x00000002 /* ECC protect page table access */
+#define	XSCALE_AUXCTL_MD_WB_RA	0x00000000 /* mini-D$ wb, read-allocate */
+#define	XSCALE_AUXCTL_MD_WB_RWA	0x00000010 /* mini-D$ wb, read/write-allocate */
+#define	XSCALE_AUXCTL_MD_WT	0x00000020 /* mini-D$ wt, read-allocate */
+#define	XSCALE_AUXCTL_MD_MASK	0x00000030
+
+/* Cache type register definitions */
+#define	CPU_CT_ISIZE(x)		((x) & 0xfff)		/* I$ info */
+#define	CPU_CT_DSIZE(x)		(((x) >> 12) & 0xfff)	/* D$ info */
+#define	CPU_CT_S		(1U << 24)		/* split cache */
+#define	CPU_CT_CTYPE(x)		(((x) >> 25) & 0xf)	/* cache type */
+
+#define	CPU_CT_CTYPE_WT		0	/* write-through */
+#define	CPU_CT_CTYPE_WB1	1	/* write-back, clean w/ read */
+#define	CPU_CT_CTYPE_WB2	2	/* w/b, clean w/ cp15,7 */
+#define	CPU_CT_CTYPE_WB6	6	/* w/b, cp15,7, lockdown fmt A */
+#define	CPU_CT_CTYPE_WB7	7	/* w/b, cp15,7, lockdown fmt B */
+
+#define	CPU_CT_xSIZE_LEN(x)	((x) & 0x3)		/* line size */
+#define	CPU_CT_xSIZE_M		(1U << 2)		/* multiplier */
+#define	CPU_CT_xSIZE_ASSOC(x)	(((x) >> 3) & 0x7)	/* associativity */
+#define	CPU_CT_xSIZE_SIZE(x)	(((x) >> 6) & 0x7)	/* size */
+
+/* Fault status register definitions */
+
+#define FAULT_TYPE_MASK 0x0f
+#define FAULT_USER      0x10
+
+#define FAULT_WRTBUF_0  0x00 /* Vector Exception */
+#define FAULT_WRTBUF_1  0x02 /* Terminal Exception */
+#define FAULT_BUSERR_0  0x04 /* External Abort on Linefetch -- Section */
+#define FAULT_BUSERR_1  0x06 /* External Abort on Linefetch -- Page */
+#define FAULT_BUSERR_2  0x08 /* External Abort on Non-linefetch -- Section */
+#define FAULT_BUSERR_3  0x0a /* External Abort on Non-linefetch -- Page */
+#define FAULT_BUSTRNL1  0x0c /* External abort on Translation -- Level 1 */
+#define FAULT_BUSTRNL2  0x0e /* External abort on Translation -- Level 2 */
+#define FAULT_ALIGN_0   0x01 /* Alignment */
+#define FAULT_ALIGN_1   0x03 /* Alignment */
+#define FAULT_TRANS_S   0x05 /* Translation -- Section */
+#define FAULT_TRANS_P   0x07 /* Translation -- Page */
+#define FAULT_DOMAIN_S  0x09 /* Domain -- Section */
+#define FAULT_DOMAIN_P  0x0b /* Domain -- Page */
+#define FAULT_PERM_S    0x0d /* Permission -- Section */
+#define FAULT_PERM_P    0x0f /* Permission -- Page */
+
+#define	FAULT_IMPRECISE	0x400	/* Imprecise exception (XSCALE) */
+
+/*
+ * Address of the vector page, low and high versions.
+ */
+#define	ARM_VECTORS_LOW		0x00000000U
+#define	ARM_VECTORS_HIGH	0xffff0000U
+
+/*
+ * ARM Instructions
+ *
+ *       3 3 2 2 2                              
+ *       1 0 9 8 7                                                     0
+ *      +-------+-------------------------------------------------------+
+ *      | cond  |              instruction dependant                    |
+ *      |c c c c|                                                       |
+ *      +-------+-------------------------------------------------------+
+ */
+
+#define INSN_SIZE		4		/* Always 4 bytes */
+#define INSN_COND_MASK		0xf0000000	/* Condition mask */
+#define INSN_COND_AL		0xe0000000	/* Always condition */
+
+#endif /* !MACHINE_ARMREG_H */
diff --git a/libacc/disassem.cpp b/libacc/disassem.cpp
new file mode 100644
index 0000000..ac35342
--- /dev/null
+++ b/libacc/disassem.cpp
@@ -0,0 +1,711 @@
+/*	$NetBSD: disassem.c,v 1.14 2003/03/27 16:58:36 mycroft Exp $	*/
+
+/*-
+ * Copyright (c) 1996 Mark Brinicombe.
+ * Copyright (c) 1996 Brini.
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. 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.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by Brini.
+ * 4. The name of the company nor the name of the author may be used to
+ *    endorse or promote products derived from this software without specific
+ *    prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY BRINI ``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 BRINI 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.
+ *
+ * RiscBSD kernel project
+ *
+ * db_disasm.c
+ *
+ * Kernel disassembler
+ *
+ * Created      : 10/02/96
+ *
+ * Structured after the sparc/sparc/db_disasm.c by David S. Miller &
+ * Paul Kranenburg
+ *
+ * This code is not complete. Not all instructions are disassembled.
+ */
+
+#include <sys/cdefs.h>
+//__FBSDID("$FreeBSD: /repoman/r/ncvs/src/sys/arm/arm/disassem.c,v 1.2 2005/01/05 21:58:47 imp Exp $");
+#include <sys/param.h>
+#include <stdio.h>
+#include <stdarg.h>
+
+#include "disassem.h"
+#include "armreg.h"
+//#include <ddb/ddb.h>
+
+/*
+ * General instruction format
+ *
+ *	insn[cc][mod]	[operands]
+ *
+ * Those fields with an uppercase format code indicate that the field
+ * follows directly after the instruction before the separator i.e.
+ * they modify the instruction rather than just being an operand to
+ * the instruction. The only exception is the writeback flag which
+ * follows a operand.
+ *
+ *
+ * 2 - print Operand 2 of a data processing instruction
+ * d - destination register (bits 12-15)
+ * n - n register (bits 16-19)
+ * s - s register (bits 8-11)
+ * o - indirect register rn (bits 16-19) (used by swap)
+ * m - m register (bits 0-3)
+ * a - address operand of ldr/str instruction
+ * e - address operand of ldrh/strh instruction
+ * l - register list for ldm/stm instruction
+ * f - 1st fp operand (register) (bits 12-14)
+ * g - 2nd fp operand (register) (bits 16-18)
+ * h - 3rd fp operand (register/immediate) (bits 0-4)
+ * b - branch address
+ * t - thumb branch address (bits 24, 0-23)
+ * k - breakpoint comment (bits 0-3, 8-19)
+ * X - block transfer type
+ * Y - block transfer type (r13 base)
+ * c - comment field bits(0-23)
+ * p - saved or current status register
+ * F - PSR transfer fields
+ * D - destination-is-r15 (P) flag on TST, TEQ, CMP, CMN
+ * L - co-processor transfer size
+ * S - set status flag
+ * P - fp precision
+ * Q - fp precision (for ldf/stf)
+ * R - fp rounding
+ * v - co-processor data transfer registers + addressing mode
+ * W - writeback flag
+ * x - instruction in hex
+ * # - co-processor number
+ * y - co-processor data processing registers
+ * z - co-processor register transfer registers
+ */
+
+struct arm32_insn {
+	u_int mask;
+	u_int pattern;
+	const char* name;
+	const char* format;
+};
+
+static const struct arm32_insn arm32_i[] = {
+    { 0x0fffffff, 0x0ff00000, "imb",	"c" },		/* Before swi */
+    { 0x0fffffff, 0x0ff00001, "imbrange",	"c" },	/* Before swi */
+    { 0x0f000000, 0x0f000000, "swi",	"c" },
+    { 0xfe000000, 0xfa000000, "blx",	"t" },		/* Before b and bl */
+    { 0x0f000000, 0x0a000000, "b",	"b" },
+    { 0x0f000000, 0x0b000000, "bl",	"b" },
+    { 0x0fe000f0, 0x00000090, "mul",	"Snms" },
+    { 0x0fe000f0, 0x00200090, "mla",	"Snmsd" },
+    { 0x0fe000f0, 0x00800090, "umull",	"Sdnms" },
+    { 0x0fe000f0, 0x00c00090, "smull",	"Sdnms" },
+    { 0x0fe000f0, 0x00a00090, "umlal",	"Sdnms" },
+    { 0x0fe000f0, 0x00e00090, "smlal",	"Sdnms" },
+    { 0x0d700000, 0x04200000, "strt",	"daW" },
+    { 0x0d700000, 0x04300000, "ldrt",	"daW" },
+    { 0x0d700000, 0x04600000, "strbt",	"daW" },
+    { 0x0d700000, 0x04700000, "ldrbt",	"daW" },
+    { 0x0c500000, 0x04000000, "str",	"daW" },
+    { 0x0c500000, 0x04100000, "ldr",	"daW" },
+    { 0x0c500000, 0x04400000, "strb",	"daW" },
+    { 0x0c500000, 0x04500000, "ldrb",	"daW" },
+    { 0x0e1f0000, 0x080d0000, "stm",	"YnWl" },/* separate out r13 base */
+    { 0x0e1f0000, 0x081d0000, "ldm",	"YnWl" },/* separate out r13 base */    
+    { 0x0e100000, 0x08000000, "stm",	"XnWl" },
+    { 0x0e100000, 0x08100000, "ldm",	"XnWl" },    
+    { 0x0e1000f0, 0x00100090, "ldrb",	"deW" },
+    { 0x0e1000f0, 0x00000090, "strb",	"deW" },
+    { 0x0e1000f0, 0x001000d0, "ldrsb",	"deW" },
+    { 0x0e1000f0, 0x001000b0, "ldrh",	"deW" },
+    { 0x0e1000f0, 0x000000b0, "strh",	"deW" },
+    { 0x0e1000f0, 0x001000f0, "ldrsh",	"deW" },
+    { 0x0f200090, 0x00200090, "und",	"x" },	/* Before data processing */
+    { 0x0e1000d0, 0x000000d0, "und",	"x" },	/* Before data processing */
+    { 0x0ff00ff0, 0x01000090, "swp",	"dmo" },
+    { 0x0ff00ff0, 0x01400090, "swpb",	"dmo" },
+    { 0x0fbf0fff, 0x010f0000, "mrs",	"dp" },	/* Before data processing */
+    { 0x0fb0fff0, 0x0120f000, "msr",	"pFm" },/* Before data processing */
+    { 0x0fb0f000, 0x0320f000, "msr",	"pF2" },/* Before data processing */
+    { 0x0ffffff0, 0x012fff10, "bx",     "m" },
+    { 0x0fff0ff0, 0x016f0f10, "clz",	"dm" },
+    { 0x0ffffff0, 0x012fff30, "blx",	"m" },
+    { 0xfff000f0, 0xe1200070, "bkpt",	"k" },
+    { 0x0de00000, 0x00000000, "and",	"Sdn2" },
+    { 0x0de00000, 0x00200000, "eor",	"Sdn2" },
+    { 0x0de00000, 0x00400000, "sub",	"Sdn2" },
+    { 0x0de00000, 0x00600000, "rsb",	"Sdn2" },
+    { 0x0de00000, 0x00800000, "add",	"Sdn2" },
+    { 0x0de00000, 0x00a00000, "adc",	"Sdn2" },
+    { 0x0de00000, 0x00c00000, "sbc",	"Sdn2" },
+    { 0x0de00000, 0x00e00000, "rsc",	"Sdn2" },
+    { 0x0df00000, 0x01100000, "tst",	"Dn2" },
+    { 0x0df00000, 0x01300000, "teq",	"Dn2" },
+    { 0x0df00000, 0x01500000, "cmp",	"Dn2" },
+    { 0x0df00000, 0x01700000, "cmn",	"Dn2" },
+    { 0x0de00000, 0x01800000, "orr",	"Sdn2" },
+    { 0x0de00000, 0x01a00000, "mov",	"Sd2" },
+    { 0x0de00000, 0x01c00000, "bic",	"Sdn2" },
+    { 0x0de00000, 0x01e00000, "mvn",	"Sd2" },
+    { 0x0ff08f10, 0x0e000100, "adf",	"PRfgh" },
+    { 0x0ff08f10, 0x0e100100, "muf",	"PRfgh" },
+    { 0x0ff08f10, 0x0e200100, "suf",	"PRfgh" },
+    { 0x0ff08f10, 0x0e300100, "rsf",	"PRfgh" },
+    { 0x0ff08f10, 0x0e400100, "dvf",	"PRfgh" },
+    { 0x0ff08f10, 0x0e500100, "rdf",	"PRfgh" },
+    { 0x0ff08f10, 0x0e600100, "pow",	"PRfgh" },
+    { 0x0ff08f10, 0x0e700100, "rpw",	"PRfgh" },
+    { 0x0ff08f10, 0x0e800100, "rmf",	"PRfgh" },
+    { 0x0ff08f10, 0x0e900100, "fml",	"PRfgh" },
+    { 0x0ff08f10, 0x0ea00100, "fdv",	"PRfgh" },
+    { 0x0ff08f10, 0x0eb00100, "frd",	"PRfgh" },
+    { 0x0ff08f10, 0x0ec00100, "pol",	"PRfgh" },
+    { 0x0f008f10, 0x0e000100, "fpbop",	"PRfgh" },
+    { 0x0ff08f10, 0x0e008100, "mvf",	"PRfh" },
+    { 0x0ff08f10, 0x0e108100, "mnf",	"PRfh" },
+    { 0x0ff08f10, 0x0e208100, "abs",	"PRfh" },
+    { 0x0ff08f10, 0x0e308100, "rnd",	"PRfh" },
+    { 0x0ff08f10, 0x0e408100, "sqt",	"PRfh" },
+    { 0x0ff08f10, 0x0e508100, "log",	"PRfh" },
+    { 0x0ff08f10, 0x0e608100, "lgn",	"PRfh" },
+    { 0x0ff08f10, 0x0e708100, "exp",	"PRfh" },
+    { 0x0ff08f10, 0x0e808100, "sin",	"PRfh" },
+    { 0x0ff08f10, 0x0e908100, "cos",	"PRfh" },
+    { 0x0ff08f10, 0x0ea08100, "tan",	"PRfh" },
+    { 0x0ff08f10, 0x0eb08100, "asn",	"PRfh" },
+    { 0x0ff08f10, 0x0ec08100, "acs",	"PRfh" },
+    { 0x0ff08f10, 0x0ed08100, "atn",	"PRfh" },
+    { 0x0f008f10, 0x0e008100, "fpuop",	"PRfh" },
+    { 0x0e100f00, 0x0c000100, "stf",	"QLv" },
+    { 0x0e100f00, 0x0c100100, "ldf",	"QLv" },
+    { 0x0ff00f10, 0x0e000110, "flt",	"PRgd" },
+    { 0x0ff00f10, 0x0e100110, "fix",	"PRdh" },
+    { 0x0ff00f10, 0x0e200110, "wfs",	"d" },
+    { 0x0ff00f10, 0x0e300110, "rfs",	"d" },
+    { 0x0ff00f10, 0x0e400110, "wfc",	"d" },
+    { 0x0ff00f10, 0x0e500110, "rfc",	"d" },
+    { 0x0ff0ff10, 0x0e90f110, "cmf",	"PRgh" },
+    { 0x0ff0ff10, 0x0eb0f110, "cnf",	"PRgh" },
+    { 0x0ff0ff10, 0x0ed0f110, "cmfe",	"PRgh" },
+    { 0x0ff0ff10, 0x0ef0f110, "cnfe",	"PRgh" },
+    { 0xff100010, 0xfe000010, "mcr2",	"#z" },
+    { 0x0f100010, 0x0e000010, "mcr",	"#z" },
+    { 0xff100010, 0xfe100010, "mrc2",	"#z" },
+    { 0x0f100010, 0x0e100010, "mrc",	"#z" },
+    { 0xff000010, 0xfe000000, "cdp2",	"#y" },
+    { 0x0f000010, 0x0e000000, "cdp",	"#y" },
+    { 0xfe100090, 0xfc100000, "ldc2",	"L#v" },
+    { 0x0e100090, 0x0c100000, "ldc",	"L#v" },
+    { 0xfe100090, 0xfc000000, "stc2",	"L#v" },
+    { 0x0e100090, 0x0c000000, "stc",	"L#v" },
+    { 0xf550f000, 0xf550f000, "pld",	"ne" },
+    { 0x0ff00ff0, 0x01000050, "qaad",	"dmn" },
+    { 0x0ff00ff0, 0x01400050, "qdaad",	"dmn" },
+    { 0x0ff00ff0, 0x01600050, "qdsub",	"dmn" },
+    { 0x0ff00ff0, 0x01200050, "dsub",	"dmn" },
+    { 0x0ff000f0, 0x01000080, "smlabb",	"nmsd" },   // d & n inverted!!
+    { 0x0ff000f0, 0x010000a0, "smlatb",	"nmsd" },   // d & n inverted!!
+    { 0x0ff000f0, 0x010000c0, "smlabt",	"nmsd" },   // d & n inverted!!
+    { 0x0ff000f0, 0x010000e0, "smlatt",	"nmsd" },   // d & n inverted!!
+    { 0x0ff000f0, 0x01400080, "smlalbb","ndms" },   // d & n inverted!!
+    { 0x0ff000f0, 0x014000a0, "smlaltb","ndms" },   // d & n inverted!!
+    { 0x0ff000f0, 0x014000c0, "smlalbt","ndms" },   // d & n inverted!!
+    { 0x0ff000f0, 0x014000e0, "smlaltt","ndms" },   // d & n inverted!!
+    { 0x0ff000f0, 0x01200080, "smlawb", "nmsd" },   // d & n inverted!!
+    { 0x0ff0f0f0, 0x012000a0, "smulwb","nms" },   // d & n inverted!!
+    { 0x0ff000f0, 0x012000c0, "smlawt", "nmsd" },   // d & n inverted!!
+    { 0x0ff0f0f0, 0x012000e0, "smulwt","nms" },   // d & n inverted!!
+    { 0x0ff0f0f0, 0x01600080, "smulbb","nms" },   // d & n inverted!!
+    { 0x0ff0f0f0, 0x016000a0, "smultb","nms" },   // d & n inverted!!
+    { 0x0ff0f0f0, 0x016000c0, "smulbt","nms" },   // d & n inverted!!
+    { 0x0ff0f0f0, 0x016000e0, "smultt","nms" },   // d & n inverted!!
+    { 0x00000000, 0x00000000, NULL,	NULL }
+};
+
+static char const arm32_insn_conditions[][4] = {
+	"eq", "ne", "cs", "cc",
+	"mi", "pl", "vs", "vc",
+	"hi", "ls", "ge", "lt",
+	"gt", "le", "",   "nv"
+};
+
+static char const insn_block_transfers[][4] = {
+	"da", "ia", "db", "ib"
+};
+
+static char const insn_stack_block_transfers[][4] = {
+	"ed", "ea", "fd", "fa"
+};
+
+static char const op_shifts[][4] = {
+	"lsl", "lsr", "asr", "ror"
+};
+
+static char const insn_fpa_rounding[][2] = {
+	"", "p", "m", "z"
+};
+
+static char const insn_fpa_precision[][2] = {
+	"s", "d", "e", "p"
+};
+
+static char const insn_fpaconstants[][8] = {
+	"0.0", "1.0", "2.0", "3.0",
+	"4.0", "5.0", "0.5", "10.0"
+};
+
+#define insn_condition(x)	arm32_insn_conditions[(x >> 28) & 0x0f]
+#define insn_blktrans(x)	insn_block_transfers[(x >> 23) & 3]
+#define insn_stkblktrans(x)	insn_stack_block_transfers[(x >> 23) & 3]
+#define op2_shift(x)		op_shifts[(x >> 5) & 3]
+#define insn_fparnd(x)		insn_fpa_rounding[(x >> 5) & 0x03]
+#define insn_fpaprec(x)		insn_fpa_precision[(((x >> 18) & 2)|(x >> 7)) & 1]
+#define insn_fpaprect(x)	insn_fpa_precision[(((x >> 21) & 2)|(x >> 15)) & 1]
+#define insn_fpaimm(x)		insn_fpaconstants[x & 0x07]
+
+/* Local prototypes */
+static void disasm_register_shift(const disasm_interface_t *di, u_int insn);
+static void disasm_print_reglist(const disasm_interface_t *di, u_int insn);
+static void disasm_insn_ldrstr(const disasm_interface_t *di, u_int insn,
+    u_int loc);
+static void disasm_insn_ldrhstrh(const disasm_interface_t *di, u_int insn,
+    u_int loc);
+static void disasm_insn_ldcstc(const disasm_interface_t *di, u_int insn,
+    u_int loc);
+static u_int disassemble_readword(u_int address);
+static void disassemble_printaddr(u_int address);
+
+u_int
+disasm(const disasm_interface_t *di, u_int loc, int altfmt)
+{
+	const struct arm32_insn *i_ptr = &arm32_i[0];
+
+	u_int insn;
+	int matchp;
+	int branch;
+	const char* f_ptr;
+	int fmt;
+
+	fmt = 0;
+	matchp = 0;
+	insn = di->di_readword(loc);
+
+/*	di->di_printf("loc=%08x insn=%08x : ", loc, insn);*/
+
+	while (i_ptr->name) {
+		if ((insn & i_ptr->mask) ==  i_ptr->pattern) {
+			matchp = 1;
+			break;
+		}
+		i_ptr++;
+	}
+
+	if (!matchp) {
+		di->di_printf("und%s\t%08x\n", insn_condition(insn), insn);
+		return(loc + INSN_SIZE);
+	}
+
+	/* If instruction forces condition code, don't print it. */
+	if ((i_ptr->mask & 0xf0000000) == 0xf0000000)
+		di->di_printf("%s", i_ptr->name);
+	else
+		di->di_printf("%s%s", i_ptr->name, insn_condition(insn));
+
+	f_ptr = i_ptr->format;
+
+	/* Insert tab if there are no instruction modifiers */
+
+	if (*(f_ptr) < 'A' || *(f_ptr) > 'Z') {
+		++fmt;
+		di->di_printf("\t");
+	}
+
+	while (*f_ptr) {
+		switch (*f_ptr) {
+		/* 2 - print Operand 2 of a data processing instruction */
+		case '2':
+			if (insn & 0x02000000) {
+				int rotate= ((insn >> 7) & 0x1e);
+
+				di->di_printf("#0x%08x",
+					      (insn & 0xff) << (32 - rotate) |
+					      (insn & 0xff) >> rotate);
+			} else {  
+				disasm_register_shift(di, insn);
+			}
+			break;
+		/* d - destination register (bits 12-15) */
+		case 'd':
+			di->di_printf("r%d", ((insn >> 12) & 0x0f));
+			break;
+		/* D - insert 'p' if Rd is R15 */
+		case 'D':
+			if (((insn >> 12) & 0x0f) == 15)
+				di->di_printf("p");
+			break;
+		/* n - n register (bits 16-19) */
+		case 'n':
+			di->di_printf("r%d", ((insn >> 16) & 0x0f));
+			break;
+		/* s - s register (bits 8-11) */
+		case 's':
+			di->di_printf("r%d", ((insn >> 8) & 0x0f));
+			break;
+		/* o - indirect register rn (bits 16-19) (used by swap) */
+		case 'o':
+			di->di_printf("[r%d]", ((insn >> 16) & 0x0f));
+			break;
+		/* m - m register (bits 0-4) */
+		case 'm':
+			di->di_printf("r%d", ((insn >> 0) & 0x0f));
+			break;
+		/* a - address operand of ldr/str instruction */
+		case 'a':
+			disasm_insn_ldrstr(di, insn, loc);
+			break;
+		/* e - address operand of ldrh/strh instruction */
+		case 'e':
+			disasm_insn_ldrhstrh(di, insn, loc);
+			break;
+		/* l - register list for ldm/stm instruction */
+		case 'l':
+			disasm_print_reglist(di, insn);
+			break;
+		/* f - 1st fp operand (register) (bits 12-14) */
+		case 'f':
+			di->di_printf("f%d", (insn >> 12) & 7);
+			break;
+		/* g - 2nd fp operand (register) (bits 16-18) */
+		case 'g':
+			di->di_printf("f%d", (insn >> 16) & 7);
+			break;
+		/* h - 3rd fp operand (register/immediate) (bits 0-4) */
+		case 'h':
+			if (insn & (1 << 3))
+				di->di_printf("#%s", insn_fpaimm(insn));
+			else
+				di->di_printf("f%d", insn & 7);
+			break;
+		/* b - branch address */
+		case 'b':
+			branch = ((insn << 2) & 0x03ffffff);
+			if (branch & 0x02000000)
+				branch |= 0xfc000000;
+			di->di_printaddr(loc + 8 + branch);
+			break;
+		/* t - blx address */
+		case 't':
+			branch = ((insn << 2) & 0x03ffffff) |
+			    (insn >> 23 & 0x00000002);
+			if (branch & 0x02000000)
+				branch |= 0xfc000000;
+			di->di_printaddr(loc + 8 + branch);
+			break;
+		/* X - block transfer type */
+		case 'X':
+			di->di_printf("%s", insn_blktrans(insn));
+			break;
+		/* Y - block transfer type (r13 base) */
+		case 'Y':
+			di->di_printf("%s", insn_stkblktrans(insn));
+			break;
+		/* c - comment field bits(0-23) */
+		case 'c':
+			di->di_printf("0x%08x", (insn & 0x00ffffff));
+			break;
+		/* k - breakpoint comment (bits 0-3, 8-19) */
+		case 'k':
+			di->di_printf("0x%04x",
+			    (insn & 0x000fff00) >> 4 | (insn & 0x0000000f));
+			break;
+		/* p - saved or current status register */
+		case 'p':
+			if (insn & 0x00400000)
+				di->di_printf("spsr");
+			else
+				di->di_printf("cpsr");
+			break;
+		/* F - PSR transfer fields */
+		case 'F':
+			di->di_printf("_");
+			if (insn & (1 << 16))
+				di->di_printf("c");
+			if (insn & (1 << 17))
+				di->di_printf("x");
+			if (insn & (1 << 18))
+				di->di_printf("s");
+			if (insn & (1 << 19))
+				di->di_printf("f");
+			break;
+		/* B - byte transfer flag */
+		case 'B':
+			if (insn & 0x00400000)
+				di->di_printf("b");
+			break;
+		/* L - co-processor transfer size */
+		case 'L':
+			if (insn & (1 << 22))
+				di->di_printf("l");
+			break;
+		/* S - set status flag */
+		case 'S':
+			if (insn & 0x00100000)
+				di->di_printf("s");
+			break;
+		/* P - fp precision */
+		case 'P':
+			di->di_printf("%s", insn_fpaprec(insn));
+			break;
+		/* Q - fp precision (for ldf/stf) */
+		case 'Q':
+			break;
+		/* R - fp rounding */
+		case 'R':
+			di->di_printf("%s", insn_fparnd(insn));
+			break;
+		/* W - writeback flag */
+		case 'W':
+			if (insn & (1 << 21))
+				di->di_printf("!");
+			break;
+		/* # - co-processor number */
+		case '#':
+			di->di_printf("p%d", (insn >> 8) & 0x0f);
+			break;
+		/* v - co-processor data transfer registers+addressing mode */
+		case 'v':
+			disasm_insn_ldcstc(di, insn, loc);
+			break;
+		/* x - instruction in hex */
+		case 'x':
+			di->di_printf("0x%08x", insn);
+			break;
+		/* y - co-processor data processing registers */
+		case 'y':
+			di->di_printf("%d, ", (insn >> 20) & 0x0f);
+
+			di->di_printf("c%d, c%d, c%d", (insn >> 12) & 0x0f,
+			    (insn >> 16) & 0x0f, insn & 0x0f);
+
+			di->di_printf(", %d", (insn >> 5) & 0x07);
+			break;
+		/* z - co-processor register transfer registers */
+		case 'z':
+			di->di_printf("%d, ", (insn >> 21) & 0x07);
+			di->di_printf("r%d, c%d, c%d, %d",
+			    (insn >> 12) & 0x0f, (insn >> 16) & 0x0f,
+			    insn & 0x0f, (insn >> 5) & 0x07);
+
+/*			if (((insn >> 5) & 0x07) != 0)
+				di->di_printf(", %d", (insn >> 5) & 0x07);*/
+			break;
+		default:
+			di->di_printf("[%c - unknown]", *f_ptr);
+			break;
+		}
+		if (*(f_ptr+1) >= 'A' && *(f_ptr+1) <= 'Z')
+			++f_ptr;
+		else if (*(++f_ptr)) {
+			++fmt;
+			if (fmt == 1)
+				di->di_printf("\t");
+			else
+				di->di_printf(", ");
+		}
+	};
+
+	di->di_printf("\n");
+
+	return(loc + INSN_SIZE);
+}
+
+
+static void
+disasm_register_shift(const disasm_interface_t *di, u_int insn)
+{
+	di->di_printf("r%d", (insn & 0x0f));
+	if ((insn & 0x00000ff0) == 0)
+		;
+	else if ((insn & 0x00000ff0) == 0x00000060)
+		di->di_printf(", rrx");
+	else {
+		if (insn & 0x10)
+			di->di_printf(", %s r%d", op2_shift(insn),
+			    (insn >> 8) & 0x0f);
+		else
+			di->di_printf(", %s #%d", op2_shift(insn),
+			    (insn >> 7) & 0x1f);
+	}
+}
+
+
+static void
+disasm_print_reglist(const disasm_interface_t *di, u_int insn)
+{
+	int loop;
+	int start;
+	int comma;
+
+	di->di_printf("{");
+	start = -1;
+	comma = 0;
+
+	for (loop = 0; loop < 17; ++loop) {
+		if (start != -1) {
+			if (loop == 16 || !(insn & (1 << loop))) {
+				if (comma)
+					di->di_printf(", ");
+				else
+					comma = 1;
+        			if (start == loop - 1)
+        				di->di_printf("r%d", start);
+        			else
+        				di->di_printf("r%d-r%d", start, loop - 1);
+        			start = -1;
+        		}
+        	} else {
+        		if (insn & (1 << loop))
+        			start = loop;
+        	}
+        }
+	di->di_printf("}");
+
+	if (insn & (1 << 22))
+		di->di_printf("^");
+}
+
+static void
+disasm_insn_ldrstr(const disasm_interface_t *di, u_int insn, u_int loc)
+{
+	int offset;
+
+	offset = insn & 0xfff;
+	if ((insn & 0x032f0000) == 0x010f0000) {
+		/* rA = pc, immediate index */
+		if (insn & 0x00800000)
+			loc += offset;
+		else
+			loc -= offset;
+		di->di_printaddr(loc + 8);
+ 	} else {
+		di->di_printf("[r%d", (insn >> 16) & 0x0f);
+		if ((insn & 0x03000fff) != 0x01000000) {
+			di->di_printf("%s, ", (insn & (1 << 24)) ? "" : "]");
+			if (!(insn & 0x00800000))
+				di->di_printf("-");
+			if (insn & (1 << 25))
+				disasm_register_shift(di, insn);
+			else
+				di->di_printf("#0x%03x", offset);
+		}
+		if (insn & (1 << 24))
+			di->di_printf("]");
+	}
+}
+
+static void
+disasm_insn_ldrhstrh(const disasm_interface_t *di, u_int insn, u_int loc)
+{
+	int offset;
+
+	offset = ((insn & 0xf00) >> 4) | (insn & 0xf);
+	if ((insn & 0x004f0000) == 0x004f0000) {
+		/* rA = pc, immediate index */
+		if (insn & 0x00800000)
+			loc += offset;
+		else
+			loc -= offset;
+		di->di_printaddr(loc + 8);
+ 	} else {
+		di->di_printf("[r%d", (insn >> 16) & 0x0f);
+		if ((insn & 0x01400f0f) != 0x01400000) {
+			di->di_printf("%s, ", (insn & (1 << 24)) ? "" : "]");
+			if (!(insn & 0x00800000))
+				di->di_printf("-");
+			if (insn & (1 << 22))
+				di->di_printf("#0x%02x", offset);
+			else
+				di->di_printf("r%d", (insn & 0x0f));
+		}
+		if (insn & (1 << 24))
+			di->di_printf("]");
+	}
+}
+
+static void
+disasm_insn_ldcstc(const disasm_interface_t *di, u_int insn, u_int loc)
+{
+	if (((insn >> 8) & 0xf) == 1)
+		di->di_printf("f%d, ", (insn >> 12) & 0x07);
+	else
+		di->di_printf("c%d, ", (insn >> 12) & 0x0f);
+
+	di->di_printf("[r%d", (insn >> 16) & 0x0f);
+
+	di->di_printf("%s, ", (insn & (1 << 24)) ? "" : "]");
+
+	if (!(insn & (1 << 23)))
+		di->di_printf("-");
+
+	di->di_printf("#0x%03x", (insn & 0xff) << 2);
+
+	if (insn & (1 << 24))
+		di->di_printf("]");
+
+	if (insn & (1 << 21))
+		di->di_printf("!");
+}
+
+static u_int
+disassemble_readword(u_int address)
+{
+	return(*((u_int *)address));
+}
+
+static void
+disassemble_printaddr(u_int address)
+{
+	printf("0x%08x", address);
+}
+
+static void
+disassemble_printf(const char *fmt, ...) {
+	va_list ap;
+	va_start(ap, fmt);
+	vprintf(fmt, ap);
+	va_end(ap);
+}
+
+static const disasm_interface_t disassemble_di = {
+	disassemble_readword, disassemble_printaddr, disassemble_printf
+};
+
+void
+disassemble(u_int address)
+{
+
+	(void)disasm(&disassemble_di, address, 0);
+}
+
+/* End of disassem.c */
diff --git a/libacc/disassem.h b/libacc/disassem.h
new file mode 100644
index 0000000..02747cd
--- /dev/null
+++ b/libacc/disassem.h
@@ -0,0 +1,65 @@
+/*	$NetBSD: disassem.h,v 1.4 2001/03/04 04:15:58 matt Exp $	*/
+
+/*-
+ * Copyright (c) 1997 Mark Brinicombe.
+ * Copyright (c) 1997 Causality Limited.
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. 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.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by Mark Brinicombe.
+ * 4. The name of the company nor the name of the author may be used to
+ *    endorse or promote products derived from this software without specific
+ *    prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
+ *
+ * Define the interface structure required by the disassembler.
+ *
+ * $FreeBSD: /repoman/r/ncvs/src/sys/arm/include/disassem.h,v 1.2 2005/01/05 21:58:48 imp Exp $
+ */
+
+#ifndef ANDROID_MACHINE_DISASSEM_H
+#define ANDROID_MACHINE_DISASSEM_H
+
+#include <sys/types.h>
+
+#if __cplusplus
+extern "C" {
+#endif
+
+typedef struct {
+	u_int	(*di_readword)(u_int);
+	void	(*di_printaddr)(u_int);	
+	void	(*di_printf)(const char *, ...);
+} disasm_interface_t;
+
+/* Prototypes for callable functions */
+
+u_int disasm(const disasm_interface_t *, u_int, int);
+void disassemble(u_int);
+
+#if __cplusplus
+}
+#endif
+
+#endif /* !ANDROID_MACHINE_DISASSEM_H */
diff --git a/libacc/test b/libacc/test
new file mode 100755
index 0000000..28b7655
--- /dev/null
+++ b/libacc/test
@@ -0,0 +1,13 @@
+#!/bin/sh
+rm -f tests/acc
+g++ acc.cpp disassem.cpp -g -ldl -o tests/acc && tests/acc tests/otcc.c -a x86 -d tests/otcc.out && diff tests/otcc.out tests/otcc.out-orig
+if [ -x "tests/acc" ]; then
+  tests/acc -S tests/returnval.c
+
+  if [ "$(uname)" = "Linux" ]; then
+    if [ "$(uname -m)" = "i686" ]; then
+      echo "Linux i686. Testing otcc.c"
+      tests/acc tests/otcc.c tests/otcc.c tests/returnval.c
+    fi
+  fi
+fi
diff --git a/libacc/testarm b/libacc/testarm
new file mode 100755
index 0000000..d1a442e
--- /dev/null
+++ b/libacc/testarm
@@ -0,0 +1,4 @@
+#!/bin/sh
+adb remount
+adb push tests/returnval.c /system/bin/returnval.c
+mm -j8 && adb sync && adb shell /system/bin/acc -S /system/bin/returnval.c
diff --git a/libacc/tests/.gitignore b/libacc/tests/.gitignore
new file mode 100644
index 0000000..9974532
--- /dev/null
+++ b/libacc/tests/.gitignore
@@ -0,0 +1,2 @@
+acc
+*.out
diff --git a/libacc/tests/bellard.otccex.c b/libacc/tests/bellard.otccex.c
new file mode 100644
index 0000000..e8f0989
--- /dev/null
+++ b/libacc/tests/bellard.otccex.c
@@ -0,0 +1,126 @@
+/* #!/usr/local/bin/otcc */
+/*
+ * Sample OTCC C example. You can uncomment the first line and install
+ * otcc in /usr/local/bin to make otcc scripts !  
+ */
+
+/* Any preprocessor directive except #define are ignored. We put this
+   include so that a standard C compiler can compile this code too. */
+#include <stdio.h>
+
+/* defines are handled, but macro arguments cannot be given. No
+   recursive defines are tolerated */
+#define DEFAULT_BASE 10
+
+/*
+ * Only old style K&R prototypes are parsed. Only int arguments are
+ * allowed (implicit types).
+ * 
+ * By benchmarking the execution time of this function (for example
+ * for fib(35)), you'll notice that OTCC is quite fast because it
+ * generates native i386 machine code.  
+ */
+fib(n)
+{
+    if (n <= 2)
+        return 1;
+    else
+        return fib(n-1) + fib(n-2);
+}
+
+/* Identifiers are parsed the same way as C: begins with letter or
+   '_', and then letters, '_' or digits */
+fact(n)
+{
+    /* local variables can be declared. Only 'int' type is supported */
+    int i, r;
+    r = 1;
+    /* 'while' and 'for' loops are supported */
+    for(i=2;i<=n;i++)
+        r = r * i;
+    return r;
+}
+
+/* Well, we could use printf, but it would be too easy */
+print_num(n, b)
+{
+    int tab, p, c;
+    /* Numbers can be entered in decimal, hexadecimal ('0x' prefix) and
+       octal ('0' prefix) */
+    /* more complex programs use malloc */
+    tab = malloc(0x100); 
+    p = tab;
+    while (1) {
+        c = n % b;
+        /* Character constants can be used */
+        if (c >= 10)
+            c = c + 'a' - 10;
+        else
+            c = c + '0';
+        *(char *)p = c;
+        p++;
+        n = n / b;
+        /* 'break' is supported */
+        if (n == 0)
+            break;
+    }
+    while (p != tab) {
+        p--;
+        printf("%c", *(char *)p);
+    }
+    free(tab);
+}
+
+/* 'main' takes standard 'argc' and 'argv' parameters */
+main(argc, argv)
+{
+    /* no local name space is supported, but local variables ARE
+       supported. As long as you do not use a globally defined
+       variable name as local variable (which is a bad habbit), you
+       won't have any problem */
+    int s, n, f, base;
+    
+    /* && and || operator have the same semantics as C (left to right
+       evaluation and early exit) */
+    if (argc != 2 && argc != 3) {
+        /* '*' operator is supported with explicit casting to 'int *',
+           'char *' or 'int (*)()' (function pointer). Of course, 'int'
+           are supposed to be used as pointers too. */
+        s = *(int *)argv;
+        help(s);
+        return 1;
+    }
+    /* Any libc function can be used because OTCC uses dynamic linking */
+    n = atoi(*(int *)(argv + 4));
+    base = DEFAULT_BASE;
+    if (argc >= 3) {
+        base = atoi(*(int *)(argv + 8));
+        if (base < 2 || base > 36) {
+            /* external variables can be used too (here: 'stderr') */
+            fprintf(stderr, "Invalid base\n");
+            return 1;
+        }
+    }
+    printf("fib(%d) = ", n);
+    print_num(fib(n), base);
+    printf("\n");
+
+    printf("fact(%d) = ", n);
+    if (n > 12) {
+        printf("Overflow");
+    } else {
+        /* why not using a function pointer ? */
+        f = &fact;
+        print_num((*(int (*)())f)(n), base);
+    }
+    printf("\n");
+    return 0;
+}
+
+/* functions can be used before being defined */
+help(name)
+{
+    printf("usage: %s n [base]\n", name);
+    printf("Compute fib(n) and fact(n) and output the result in base 'base'\n");
+}
+
diff --git a/libacc/tests/expr.c b/libacc/tests/expr.c
new file mode 100644
index 0000000..4f2d2e7
--- /dev/null
+++ b/libacc/tests/expr.c
@@ -0,0 +1,60 @@
+/* Test operators */
+
+testInc() { int a, b; a = 3; b = a++; printf("3++ = %d %d\n", b, a); }
+testDec() { int a, b; a = 3; b = a--; printf("3-- = %d %d\n", b, a); }
+testTimes(){ printf("%d * %d = %d\n", 10, 4, 10 * 4); }
+testDiv(){ printf("%d / %d = %d\n", 11, 4, 11 / 4); }
+testMod(){ printf("%d %% %d = %d\n", 11, 4, 11 % 4); }
+testPlus(){ printf("%d + %d = %d\n", 10, 4, 10 + 4); }
+testMinus(){ printf("%d - %d = %d\n", 10, 4, 10 - 4); }
+testShiftLeft(){ printf("%d << %d = %d\n", 10, 4, 10 << 4); }
+testShiftRight(){ printf("%d >> %d = %d\n", 100, 4, 100 >> 4); }
+testLess(){ printf("%d < %d = %d\n", 10, 4, 10 < 4); }
+testLesEqual(){ printf("%d <= %d = %d\n", 10, 4, 10 <= 4); }
+testGreater(){ printf("%d > %d = %d\n", 10, 4, 10 > 4); }
+testGreaterEqual(){ printf("%d >= %d = %d\n", 10, 4, 10 >= 4); }
+testEqualTo(){ printf("%d == %d = %d\n", 10, 4, 10 == 4); }
+testNotEqualTo(){ printf("%d != %d = %d\n", 10, 4, 10 != 4); }
+testBitAnd(){ printf("%d & %d = %d\n", 10, 7, 10 & 7); }
+testBitXor(){ printf("%d ^ %d = %d\n", 10, 7, 10 ^ 7); }
+testBitOr(){ printf("%d | %d = %d\n", 10, 4, 10 | 4); }
+testAssignment(){ int a, b; a = 3; b = a; printf("b == %d\n", b); }
+testLogicalAnd(){ printf("%d && %d = %d\n", 10, 4, 10 && 4); }
+testLogicalOr(){ printf("%d || %d = %d\n", 10, 4, 10 || 4); }
+testAddressOf(){ int a; printf("&a is %d\n", &a); }
+testPointerIndirection(){ int a, b; a = &b; b = 17; printf("*%d  = %d =?= %d\n", a, * (int*) a, b); }
+testNegation(){ printf("-%d = %d\n", 10, -10); }
+testUnaryPlus(){ printf("+%d = %d\n", 10, +10); }
+testUnaryNot(){ printf("!%d = %d\n", 10, !10); }
+testBitNot(){ printf("~%d = %d\n", 10, ~10); }
+
+main(a,b) {
+    testInc();
+    testDec();
+    testTimes();
+    testDiv();
+    testMod();
+    testPlus();
+    testMinus();
+    testShiftLeft();
+    testShiftRight();
+    testLess();
+    testLesEqual();
+    testGreater();
+    testGreaterEqual();
+    testEqualTo();
+    testNotEqualTo();
+    testBitAnd();
+    testBinXor();
+    testBitOr();
+    testAssignment();
+    testLogicalAnd();
+    testLogicalOr();
+    testAddressOf();
+    testPointerIndirection();
+    testNegation();
+    testUnaryPlus();
+    testUnaryNot();
+    testBitNot();
+    return 0;
+}
\ No newline at end of file
diff --git a/libacc/tests/hello.c b/libacc/tests/hello.c
new file mode 100644
index 0000000..585ce6c
--- /dev/null
+++ b/libacc/tests/hello.c
@@ -0,0 +1,3 @@
+main(a,b) {
+    printf("Hello, world\n");
+}
diff --git a/libacc/tests/hello.out-orig b/libacc/tests/hello.out-orig
new file mode 100644
index 0000000..1fb7bf5
--- /dev/null
+++ b/libacc/tests/hello.out-orig
Binary files differ
diff --git a/libacc/tests/missing-main.c b/libacc/tests/missing-main.c
new file mode 100644
index 0000000..e73eec4
--- /dev/null
+++ b/libacc/tests/missing-main.c
@@ -0,0 +1,4 @@
+/* No main. */
+
+a() {
+}
\ No newline at end of file
diff --git a/libacc/tests/otcc.c b/libacc/tests/otcc.c
new file mode 100644
index 0000000..577fcf3
--- /dev/null
+++ b/libacc/tests/otcc.c
@@ -0,0 +1,446 @@
+#include <stdio.h>
+#define k *(int*)
+#define a if(
+#define c ad()
+#define i else
+#define p while(
+#define x *(char*)
+#define b ==
+#define V =calloc(1,99999)
+#define f ()
+#define J return
+#define l ae(
+#define n e)
+#define u d!=
+#define F int 
+#define y (j)
+#define r m=
+#define t +4
+F d,z,C,h,P,K,ac,q,G,v,Q,R,D,L,W,M;
+E(n{
+x D++=e;
+}
+o f{
+a L){
+h=x L++;
+a h b 2){
+L=0;
+h=W;
+}
+}
+i h=fgetc(Q);
+}
+X f{
+J isalnum(h)|h b 95;
+}
+Y f{
+a h b 92){
+o f;
+a h b 110)h=10;
+}
+}
+c{
+F e,j,m;
+p isspace(h)|h b 35){
+a h b 35){
+o f;
+c;
+a d b 536){
+c;
+E(32);
+k d=1;
+k(d t)=D;
+}
+p h!=10){
+E(h);
+o f;
+}
+E(h);
+E(2);
+}
+o f;
+}
+C=0;
+d=h;
+a X f){
+E(32);
+M=D;
+p X f){
+E(h);
+o f;
+}
+a isdigit(d)){
+z=strtol(M,0,0);
+d=2;
+}
+i{
+x D=32;
+d=strstr(R,M-1)-R;
+x D=0;
+d=d*8+256;
+a d>536){
+d=P+d;
+a k d b 1){
+L=k(d t);
+W=h;
+o f;
+c;
+}
+}
+}
+}
+i{
+o f;
+a d b 39){
+d=2;
+Y f;
+z=h;
+o f;
+o f;
+}
+i a d b 47&h b 42){
+o f;
+p h){
+p h!=42)o f;
+o f;
+a h b 47)h=0;
+}
+o f;
+c;
+}
+i{
+e="++#m--%am*@R<^1c/@%[_[H3c%@%[_[H3c+@.B#d-@%:_^BKd<<Z/03e>>`/03e<=0f>=/f<@.f>@1f==&g!='g&&k||#l&@.BCh^@.BSi|@.B+j~@/%Yd!@&d*@b";
+p j=x e++){
+r x e++;
+z=0;
+p(C=x e++-98)<0)z=z*64+C+64;
+a j b d&(m b h|m b 64)){
+a m b h){
+o f;
+d=1;
+}
+break;
+}
+}
+}
+}
+}
+l g){
+p g&&g!=-1){
+x q++=g;
+g=g>>8;
+}
+}
+A(n{
+F g;
+p n{
+g=k e;
+k e=q-e-4;
+e=g;
+}
+}
+s(g,n{
+l g);
+k q=e;
+e=q;
+q=q t;
+J e;
+}
+H(n{
+s(184,n;
+}
+B(n{
+J s(233,n;
+}
+S(j,n{
+l 1032325);
+J s(132+j,n;
+}
+Z(n{
+l 49465);
+H(0);
+l 15);
+l e+144);
+l 192);
+}
+N(j,n{
+l j+131);
+s((e<512)<<7|5,n;
+}
+T y{
+F g,e,m,aa;
+g=1;
+a d b 34){
+H(v);
+p h!=34){
+Y f;
+x v++=h;
+o f;
+}
+x v=0;
+v=v t&-4;
+o f;
+c;
+}
+i{
+aa=C;
+r z;
+e=d;
+c;
+a e b 2){
+H(m);
+}
+i a aa b 2){
+T(0);
+s(185,0);
+a e b 33)Z(m);
+i l m);
+}
+i a e b 40){
+w f;
+c;
+}
+i a e b 42){
+c;
+e=d;
+c;
+c;
+a d b 42){
+c;
+c;
+c;
+c;
+e=0;
+}
+c;
+T(0);
+a d b 61){
+c;
+l 80);
+w f;
+l 89);
+l 392+(e b 256));
+}
+i a n{
+a e b 256)l 139);
+i l 48655);
+q++;
+}
+}
+i a e b 38){
+N(10,k d);
+c;
+}
+i{
+g=k e;
+a!g)g=dlsym(0,M);
+a d b 61&j){
+c;
+w f;
+N(6,g);
+}
+i a u 40){
+N(8,g);
+a C b 11){
+N(0,g);
+l z);
+c;
+}
+}
+}
+}
+a d b 40){
+a g b 1)l 80);
+r s(60545,0);
+c;
+j=0;
+p u 41){
+w f;
+s(2393225,j);
+a d b 44)c;
+j=j t;
+}
+k r j;
+c;
+a!g){
+e=e t;
+k e=s(232,k n;
+}
+i a g b 1){
+s(2397439,j);
+j=j t;
+}
+i{
+s(232,g-q-5);
+}
+a j)s(50305,j);
+}
+}
+O y{
+F e,g,m;
+a j--b 1)T(1);
+i{
+O y;
+r 0;
+p j b C){
+g=d;
+e=z;
+c;
+a j>8){
+r S(e,m);
+O y;
+}
+i{
+l 80);
+O y;
+l 89);
+a j b 4|j b 5){
+Z(n;
+}
+i{
+l n;
+a g b 37)l 146);
+}
+}
+}
+a m&&j>8){
+r S(e,m);
+H(e^1);
+B(5);
+A(m);
+H(n;
+}
+}
+}
+w f{
+O(11);
+}
+U f{
+w f;
+J S(0,0);
+}
+I y{
+F m,g,e;
+a d b 288){
+c;
+c;
+r U f;
+c;
+I y;
+a d b 312){
+c;
+g=B(0);
+A(m);
+I y;
+A(g);
+}
+i{
+A(m);
+}
+}
+i a d b 352|d b 504){
+e=d;
+c;
+c;
+a e b 352){
+g=q;
+r U f;
+}
+i{
+a u 59)w f;
+c;
+g=q;
+r 0;
+a u 59)r U f;
+c;
+a u 41){
+e=B(0);
+w f;
+B(g-q-5);
+A(n;
+g=e t;
+}
+}
+c;
+I(&m);
+B(g-q-5);
+A(m);
+}
+i a d b 123){
+c;
+ab(1);
+p u 125)I y;
+c;
+}
+i{
+a d b 448){
+c;
+a u 59)w f;
+K=B(K);
+}
+i a d b 400){
+c;
+k j=B(k j);
+}
+i a u 59)w f;
+c;
+}
+}
+ab y{
+F m;
+p d b 256|u-1&!j){
+a d b 256){
+c;
+p u 59){
+a j){
+G=G t;
+k d=-G;
+}
+i{
+k d=v;
+v=v t;
+}
+c;
+a d b 44)c;
+}
+c;
+}
+i{
+A(k(d t));
+k d=q;
+c;
+c;
+r 8;
+p u 41){
+k d=m;
+r m t;
+c;
+a d b 44)c;
+}
+c;
+K=G=0;
+l 15042901);
+r s(60545,0);
+I(0);
+A(K);
+l 50121);
+k r G;
+}
+}
+}
+main(g,n{
+Q=stdin;
+a g-->1){
+e=e t;
+Q=fopen(k e,"r");
+}
+D=strcpy(R V," int if else while break return for define main ")+48;
+v V;
+q=ac V;
+P V;
+o f;
+c;
+ab(0);
+J(*(int(*)f)k(P+592))(g,n;
+}
+
diff --git a/libacc/tests/otcc.out-orig b/libacc/tests/otcc.out-orig
new file mode 100644
index 0000000..fa14c72
--- /dev/null
+++ b/libacc/tests/otcc.out-orig
Binary files differ
diff --git a/libacc/tests/returnval.c b/libacc/tests/returnval.c
new file mode 100644
index 0000000..3142fe2
--- /dev/null
+++ b/libacc/tests/returnval.c
@@ -0,0 +1,3 @@
+main() {
+  return 42;
+}
\ No newline at end of file
diff --git a/libacc/tests/simplest.c b/libacc/tests/simplest.c
new file mode 100644
index 0000000..bae895a
--- /dev/null
+++ b/libacc/tests/simplest.c
@@ -0,0 +1 @@
+main() {}
diff --git a/libcutils/Android.mk b/libcutils/Android.mk
index 18d0ee3..285e195 100644
--- a/libcutils/Android.mk
+++ b/libcutils/Android.mk
@@ -17,6 +17,7 @@
 include $(CLEAR_VARS)
 
 commonSources := \
+	abort_socket.c \
 	array.c \
 	hashmap.c \
 	atomic.c \
@@ -38,6 +39,9 @@
 	properties.c \
 	threads.c
 
+commonHostSources := \
+        ashmem-host.c
+
 # some files must not be compiled when building against Mingw
 # they correspond to features not used by our host development tools
 # which are also hard or even impossible to port to native Win32
@@ -60,16 +64,18 @@
         mspace.c \
         selector.c \
         tztime.c \
-        tzstrftime.c \
         adb_networking.c \
-	zygote.c
+        zygote.c
+
+    commonHostSources += \
+        tzstrftime.c
 endif
 
 
 # Static library for host
 # ========================================================
 LOCAL_MODULE := libcutils
-LOCAL_SRC_FILES := $(commonSources) ashmem-host.c
+LOCAL_SRC_FILES := $(commonSources) $(commonHostSources)
 LOCAL_LDLIBS := -lpthread
 LOCAL_STATIC_LIBRARIES := liblog
 include $(BUILD_HOST_STATIC_LIBRARY)
@@ -81,7 +87,7 @@
 # ========================================================
 include $(CLEAR_VARS)
 LOCAL_MODULE := libcutils
-LOCAL_SRC_FILES := $(commonSources) memory.c dlmalloc_stubs.c ashmem-host.c
+LOCAL_SRC_FILES := $(commonSources) $(commonHostSources) memory.c dlmalloc_stubs.c
 LOCAL_LDLIBS := -lpthread
 LOCAL_SHARED_LIBRARIES := liblog
 include $(BUILD_SHARED_LIBRARY)
diff --git a/libcutils/abort_socket.c b/libcutils/abort_socket.c
new file mode 100644
index 0000000..d732142
--- /dev/null
+++ b/libcutils/abort_socket.c
@@ -0,0 +1,293 @@
+/*
+ * Copyright 2009, 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 <stdlib.h>
+#include <errno.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <sys/socket.h>
+#include <sys/poll.h>
+
+#include "cutils/abort_socket.h"
+
+struct asocket *asocket_init(int fd) {
+    int abort_fd[2];
+    int flags;
+    struct asocket *s;
+
+    /* set primary socket to non-blocking */
+    flags = fcntl(fd, F_GETFL);
+    if (flags == -1)
+        return NULL;
+    if (fcntl(fd, F_SETFL, flags | O_NONBLOCK))
+        return NULL;
+
+    /* create pipe with non-blocking write, so that asocket_close() cannot
+       block */
+    if (pipe(abort_fd))
+        return NULL;
+    flags = fcntl(abort_fd[1], F_GETFL);
+    if (flags == -1)
+        return NULL;
+    if (fcntl(abort_fd[1], F_SETFL, flags | O_NONBLOCK))
+        return NULL;
+
+    s = malloc(sizeof(struct asocket));
+    if (!s)
+        return NULL;
+
+    s->fd = fd;
+    s->abort_fd[0] = abort_fd[0];
+    s->abort_fd[1] = abort_fd[1];
+
+    return s;
+}
+
+int asocket_connect(struct asocket *s, const struct sockaddr *addr,
+        socklen_t addrlen, int timeout) {
+
+    int ret;
+
+    do {
+        ret = connect(s->fd, addr, addrlen);
+    } while (ret && errno == EINTR);
+
+    if (ret && errno == EINPROGRESS) {
+        /* ready to poll() */
+        socklen_t retlen;
+        struct pollfd pfd[2];
+
+        pfd[0].fd = s->fd;
+        pfd[0].events = POLLOUT;
+        pfd[0].revents = 0;
+        pfd[1].fd = s->abort_fd[0];
+        pfd[1].events = POLLIN;
+        pfd[1].revents = 0;
+
+        do {
+            ret = poll(pfd, 2, timeout);
+        } while (ret < 0 && errno == EINTR);
+
+        if (ret < 0)
+            return -1;
+        else if (ret == 0) {
+            /* timeout */
+            errno = ETIMEDOUT;
+            return -1;
+        }
+
+        if (pfd[1].revents) {
+            /* abort due to asocket_abort() */
+            errno = ECANCELED;
+            return -1;
+        }
+
+        if (pfd[0].revents) {
+            if (pfd[0].revents & POLLOUT) {
+                /* connect call complete, read return code */
+                retlen = sizeof(ret);
+                if (getsockopt(s->fd, SOL_SOCKET, SO_ERROR, &ret, &retlen))
+                    return -1;
+                /* got connect() return code */
+                if (ret) {
+                    errno = ret;
+                }
+            } else {
+                /* some error event on this fd */
+                errno = ECONNABORTED;
+                return -1;
+            }
+        }
+    }
+
+    return ret;
+}
+
+int asocket_accept(struct asocket *s, struct sockaddr *addr,
+        socklen_t *addrlen, int timeout) {
+
+    int ret;
+    struct pollfd pfd[2];
+
+    pfd[0].fd = s->fd;
+    pfd[0].events = POLLIN;
+    pfd[0].revents = 0;
+    pfd[1].fd = s->abort_fd[0];
+    pfd[1].events = POLLIN;
+    pfd[1].revents = 0;
+
+    do {
+        ret = poll(pfd, 2, timeout);
+    } while (ret < 0 && errno == EINTR);
+
+    if (ret < 0)
+        return -1;
+    else if (ret == 0) {
+        /* timeout */
+        errno = ETIMEDOUT;
+        return -1;
+    }
+
+    if (pfd[1].revents) {
+        /* abort due to asocket_abort() */
+        errno = ECANCELED;
+        return -1;
+    }
+
+    if (pfd[0].revents) {
+        if (pfd[0].revents & POLLIN) {
+            /* ready to accept() without blocking */
+            do {
+                ret = accept(s->fd, addr, addrlen);
+            } while (ret < 0 && errno == EINTR);
+        } else {
+            /* some error event on this fd */
+            errno = ECONNABORTED;
+            return -1;
+        }
+    }
+
+    return ret;
+}
+
+int asocket_read(struct asocket *s, void *buf, size_t count, int timeout) {
+    int ret;
+    struct pollfd pfd[2];
+
+    pfd[0].fd = s->fd;
+    pfd[0].events = POLLIN;
+    pfd[0].revents = 0;
+    pfd[1].fd = s->abort_fd[0];
+    pfd[1].events = POLLIN;
+    pfd[1].revents = 0;
+
+    do {
+        ret = poll(pfd, 2, timeout);
+    } while (ret < 0 && errno == EINTR);
+
+    if (ret < 0)
+        return -1;
+    else if (ret == 0) {
+        /* timeout */
+        errno = ETIMEDOUT;
+        return -1;
+    }
+
+    if (pfd[1].revents) {
+        /* abort due to asocket_abort() */
+        errno = ECANCELED;
+        return -1;
+    }
+
+    if (pfd[0].revents) {
+        if (pfd[0].revents & POLLIN) {
+            /* ready to read() without blocking */
+            do {
+                ret = read(s->fd, buf, count);
+            } while (ret < 0 && errno == EINTR);
+        } else {
+            /* some error event on this fd */
+            errno = ECONNABORTED;
+            return -1;
+        }
+    }
+
+    return ret;
+}
+
+int asocket_write(struct asocket *s, const void *buf, size_t count,
+        int timeout) {
+    int ret;
+    struct pollfd pfd[2];
+
+    pfd[0].fd = s->fd;
+    pfd[0].events = POLLOUT;
+    pfd[0].revents = 0;
+    pfd[1].fd = s->abort_fd[0];
+    pfd[1].events = POLLIN;
+    pfd[1].revents = 0;
+
+    do {
+        ret = poll(pfd, 2, timeout);
+    } while (ret < 0 && errno == EINTR);
+
+    if (ret < 0)
+        return -1;
+    else if (ret == 0) {
+        /* timeout */
+        errno = ETIMEDOUT;
+        return -1;
+    }
+
+    if (pfd[1].revents) {
+        /* abort due to asocket_abort() */
+        errno = ECANCELED;
+        return -1;
+    }
+
+    if (pfd[0].revents) {
+        if (pfd[0].revents & POLLIN) {
+            /* ready to write() without blocking */
+            do {
+                ret = write(s->fd, buf, count);
+            } while (ret < 0 && errno == EINTR);
+        } else {
+            /* some error event on this fd */
+            errno = ECONNABORTED;
+            return -1;
+        }
+    }
+
+    return ret;
+}
+
+void asocket_abort(struct asocket *s) {
+    int ret;
+    char buf = 0;
+
+    /* Prevent further use of fd, without yet releasing the fd */
+    shutdown(s->fd, SHUT_RDWR);
+
+    /* wake up calls blocked at poll() */
+    do {
+        ret = write(s->abort_fd[1], &buf, 1);
+    } while (ret < 0 && errno == EINTR);
+}
+
+void asocket_destroy(struct asocket *s) {
+    struct asocket s_copy = *s;
+
+    /* Clients should *not* be using these fd's after calling
+       asocket_destroy(), but in case they do, set to -1 so they cannot use a
+       stale fd */
+    s->fd = -1;
+    s->abort_fd[0] = -1;
+    s->abort_fd[1] = -1;
+
+    /* Call asocket_abort() in case there are still threads blocked on this
+       socket. Clients should not rely on this behavior - it is racy because we
+       are about to close() these sockets - clients should instead make sure
+       all threads are done with the socket before calling asocket_destory().
+     */
+    asocket_abort(&s_copy);
+
+    /* enough safety checks, close and release memory */
+    close(s_copy.abort_fd[1]);
+    close(s_copy.abort_fd[0]);
+    close(s_copy.fd);
+
+    free(s);
+}
diff --git a/libcutils/strdup16to8.c b/libcutils/strdup16to8.c
index fadaabe..1a8ba86 100644
--- a/libcutils/strdup16to8.c
+++ b/libcutils/strdup16to8.c
@@ -15,6 +15,8 @@
 ** limitations under the License.
 */
 
+#include <limits.h>  /* for SIZE_MAX */
+
 #include <cutils/jstring.h>
 #include <assert.h>
 #include <stdlib.h>
@@ -26,19 +28,67 @@
  */
 extern size_t strnlen16to8(const char16_t* utf16Str, size_t len)
 {
-   size_t utf8Len = 0;
+    size_t utf8Len = 0;
 
-   while (len--) {
-       unsigned int uic = *utf16Str++;
+    /* A small note on integer overflow. The result can
+     * potentially be as big as 3*len, which will overflow
+     * for len > SIZE_MAX/3.
+     *
+     * Moreover, the result of a strnlen16to8 is typically used
+     * to allocate a destination buffer to strncpy16to8 which
+     * requires one more byte to terminate the UTF-8 copy, and
+     * this is generally done by careless users by incrementing
+     * the result without checking for integer overflows, e.g.:
+     *
+     *   dst = malloc(strnlen16to8(utf16,len)+1)
+     *
+     * Due to this, the following code will try to detect
+     * overflows, and never return more than (SIZE_MAX-1)
+     * when it detects one. A careless user will try to malloc
+     * SIZE_MAX bytes, which will return NULL which can at least
+     * be detected appropriately.
+     *
+     * As far as I know, this function is only used by strndup16(),
+     * but better be safe than sorry.
+     */
 
-       if (uic > 0x07ff)
-           utf8Len += 3;
-       else if (uic > 0x7f || uic == 0)
-           utf8Len += 2;
-       else
-           utf8Len++;
-   }
-   return utf8Len;
+    /* Fast path for the usual case where 3*len is < SIZE_MAX-1.
+     */
+    if (len < (SIZE_MAX-1)/3) {
+        while (len--) {
+            unsigned int uic = *utf16Str++;
+
+            if (uic > 0x07ff)
+                utf8Len += 3;
+            else if (uic > 0x7f || uic == 0)
+                utf8Len += 2;
+            else
+                utf8Len++;
+        }
+        return utf8Len;
+    }
+
+    /* The slower but paranoid version */
+    while (len--) {
+        unsigned int  uic     = *utf16Str++;
+        size_t        utf8Cur = utf8Len;
+
+        if (uic > 0x07ff)
+            utf8Len += 3;
+        else if (uic > 0x7f || uic == 0)
+            utf8Len += 2;
+        else
+            utf8Len++;
+
+        if (utf8Len < utf8Cur) /* overflow detected */
+            return SIZE_MAX-1;
+    }
+
+    /* don't return SIZE_MAX to avoid common user bug */
+    if (utf8Len == SIZE_MAX)
+        utf8Len = SIZE_MAX-1;
+
+    return utf8Len;
 }
 
 
@@ -50,7 +100,7 @@
  *
  * Make sure you allocate "utf8Str" with the result of strlen16to8() + 1,
  * not just "len".
- * 
+ *
  * Please note, a terminated \0 is always added, so your result will always
  * be "strlen16to8() + 1" bytes long.
  */
@@ -58,6 +108,10 @@
 {
     char* utf8cur = utf8Str;
 
+    /* Note on overflows: We assume the user did check the result of
+     * strnlen16to8() properly or at a minimum checked the result of
+     * its malloc(SIZE_MAX) in case of overflow.
+     */
     while (len--) {
         unsigned int uic = *utf16Str++;
 
@@ -73,8 +127,8 @@
 
             if (uic == 0) {
                 break;
-            }           
-        }       
+            }
+        }
     }
 
    *utf8cur = '\0';
@@ -85,20 +139,30 @@
 /**
  * Convert a UTF-16 string to UTF-8.
  *
- * Make sure you allocate "dest" with the result of strblen16to8(),
- * not just "strlen16()".
  */
 char * strndup16to8 (const char16_t* s, size_t n)
 {
-    char *ret;
+    char*   ret;
+    size_t  len;
 
     if (s == NULL) {
         return NULL;
     }
 
-    ret = malloc(strnlen16to8(s, n) + 1);
+    len = strnlen16to8(s, n);
+
+    /* We are paranoid, and we check for SIZE_MAX-1
+     * too since it is an overflow value for our
+     * strnlen16to8 implementation.
+     */
+    if (len >= SIZE_MAX-1)
+        return NULL;
+
+    ret = malloc(len + 1);
+    if (ret == NULL)
+        return NULL;
 
     strncpy16to8 (ret, s, n);
-    
-    return ret;    
+
+    return ret;
 }
diff --git a/liblog/logprint.c b/liblog/logprint.c
index 2cf1254..080f9e3 100644
--- a/liblog/logprint.c
+++ b/liblog/logprint.c
@@ -23,7 +23,6 @@
 #include <stdlib.h>
 #include <stdint.h>
 #include <string.h>
-#include <alloca.h>
 #include <assert.h>
 #include <arpa/inet.h>
 
diff --git a/libpixelflinger/Android.mk b/libpixelflinger/Android.mk
index 50eb5f5..0cc85d9 100644
--- a/libpixelflinger/Android.mk
+++ b/libpixelflinger/Android.mk
@@ -64,12 +64,14 @@
 LOCAL_MODULE:= libpixelflinger
 LOCAL_SRC_FILES := $(PIXELFLINGER_SRC_FILES)
 LOCAL_CFLAGS := $(PIXELFLINGER_CFLAGS)
+
 ifneq ($(BUILD_TINY_ANDROID),true)
 # Really this should go away entirely or at least not depend on
 # libhardware, but this at least gets us built.
 LOCAL_SHARED_LIBRARIES += libhardware_legacy
 LOCAL_CFLAGS += -DWITH_LIB_HARDWARE
 endif
+
 ifeq ($(TARGET_ARCH),arm)
 LOCAL_WHOLE_STATIC_LIBRARIES := libpixelflinger_armv6
 endif
diff --git a/toolbox/ls.c b/toolbox/ls.c
index f609df21..087e4d5 100644
--- a/toolbox/ls.c
+++ b/toolbox/ls.c
@@ -15,9 +15,10 @@
 #include <linux/kdev_t.h>
 
 // bits for flags argument
-#define LIST_LONG       (1 << 0)
-#define LIST_ALL        (1 << 1)
-#define LIST_RECURSIVE  (1 << 2)
+#define LIST_LONG           (1 << 0)
+#define LIST_ALL            (1 << 1)
+#define LIST_RECURSIVE      (1 << 2)
+#define LIST_DIRECTORIES    (1 << 3)
 
 // fwd
 static int listpath(const char *name, int flags);
@@ -238,7 +239,7 @@
         return -1;
     }
 
-    if (S_ISDIR(s.st_mode)) {
+    if ((flags & LIST_DIRECTORIES) == 0 && S_ISDIR(s.st_mode)) {
         if (flags & LIST_RECURSIVE)
             printf("\n%s:\n", name);
         return listdir(name, flags);
@@ -269,6 +270,8 @@
                 flags |= LIST_ALL;
             } else if (!strcmp(argv[i], "-R")) {
                 flags |= LIST_RECURSIVE;
+            } else if (!strcmp(argv[i], "-d")) {
+                flags |= LIST_DIRECTORIES;
             } else {
                 listed++;
                 if(listpath(argv[i], flags) != 0) {
diff --git a/toolbox/mkdosfs.c b/toolbox/mkdosfs.c
index 744aad1..66e720b 100644
--- a/toolbox/mkdosfs.c
+++ b/toolbox/mkdosfs.c
@@ -393,7 +393,7 @@
         bpb.bsec = length / bpb.bps;
         bpb.spt = bpb.bsec;
         // use FAT32 for 2 gig or greater 
-        if (length >= 2 *1024 *1024 *1024) {
+        if (length >= 2LL *1024 *1024 *1024) {
             fat = 32;
         } else {
             fat = 16;
diff --git a/toolbox/mount.c b/toolbox/mount.c
index ef13e1f..395c943 100644
--- a/toolbox/mount.c
+++ b/toolbox/mount.c
@@ -138,14 +138,17 @@
 
     if (loop) {
         int file_fd, device_fd;
+        int flags;
+
+        flags = (rwflag & MS_RDONLY) ? O_RDONLY : O_RDWR;
         
         // FIXME - only one loop mount supported at a time
-        file_fd = open(dev, O_RDWR);
+        file_fd = open(dev, flags);
         if (file_fd < -1) {
             perror("open backing file failed");
             return 1;
         }
-        device_fd = open(LOOP_DEVICE, O_RDWR);
+        device_fd = open(LOOP_DEVICE, flags);
         if (device_fd < -1) {
             perror("open loop device failed");
             close(file_fd);
diff --git a/toolbox/smd.c b/toolbox/smd.c
index 65ff994e..91e495c 100644
--- a/toolbox/smd.c
+++ b/toolbox/smd.c
@@ -1,4 +1,5 @@
 #include <stdio.h>
+#include <stdlib.h>
 #include <string.h>
 #include <fcntl.h>
 #include <errno.h>
diff --git a/vold/mmc.c b/vold/mmc.c
index 0f08964..fb61b2f 100644
--- a/vold/mmc.c
+++ b/vold/mmc.c
@@ -250,7 +250,7 @@
     char filename[255];
     char *uevent_buffer;
     ssize_t sz;
-    char *uevent_params[4];
+    char *uevent_params[5];
     char tmp[255];
     FILE *fp;
     char line[255];