Merge "Fix -fstack-protector-strong for x86."
diff --git a/libc/bionic/libc_logging.cpp b/libc/bionic/libc_logging.cpp
index 2a987b9..67bb052 100644
--- a/libc/bionic/libc_logging.cpp
+++ b/libc/bionic/libc_logging.cpp
@@ -31,6 +31,7 @@
 
 #include <android/set_abort_message.h>
 #include <assert.h>
+#include <ctype.h>
 #include <errno.h>
 #include <fcntl.h>
 #include <pthread.h>
@@ -46,6 +47,9 @@
 #include <time.h>
 #include <unistd.h>
 
+#define _REALLY_INCLUDE_SYS__SYSTEM_PROPERTIES_H_
+#include <sys/_system_properties.h>
+
 static pthread_mutex_t g_abort_msg_lock = PTHREAD_MUTEX_INITIALIZER;
 
 __LIBC_HIDDEN__ abort_msg_t** __abort_message_ptr; // Accessible to __libc_init_common.
@@ -481,6 +485,64 @@
   return log_fd;
 }
 
+struct cache {
+  const prop_info* pinfo;
+  uint32_t serial;
+  char c;
+};
+
+static void refresh_cache(struct cache *cache, const char *key)
+{
+  if (!cache->pinfo) {
+    cache->pinfo = __system_property_find(key);
+    if (!cache->pinfo) {
+      return;
+    }
+  }
+  uint32_t serial = __system_property_serial(cache->pinfo);
+  if (serial == cache->serial) {
+    return;
+  }
+  cache->serial = serial;
+
+  char buf[PROP_VALUE_MAX];
+  __system_property_read(cache->pinfo, 0, buf);
+  cache->c = buf[0];
+}
+
+// Timestamp state generally remains constant, since a change is
+// rare, we can accept a trylock failure gracefully.
+static pthread_mutex_t lock_clockid = PTHREAD_MUTEX_INITIALIZER;
+
+static clockid_t __android_log_clockid()
+{
+  static struct cache r_time_cache = { NULL, static_cast<uint32_t>(-1), 0 };
+  static struct cache p_time_cache = { NULL, static_cast<uint32_t>(-1), 0 };
+  char c;
+
+  if (pthread_mutex_trylock(&lock_clockid)) {
+    // We are willing to accept some race in this context
+    if (!(c = p_time_cache.c)) {
+      c = r_time_cache.c;
+    }
+  } else {
+    static uint32_t serial;
+    uint32_t current_serial = __system_property_area_serial();
+    if (current_serial != serial) {
+      refresh_cache(&r_time_cache, "ro.logd.timestamp");
+      refresh_cache(&p_time_cache, "persist.logd.timestamp");
+      serial = current_serial;
+    }
+    if (!(c = p_time_cache.c)) {
+      c = r_time_cache.c;
+    }
+
+    pthread_mutex_unlock(&lock_clockid);
+  }
+
+  return (tolower(c) == 'm') ? CLOCK_MONOTONIC : CLOCK_REALTIME;
+}
+
 struct log_time { // Wire format
   uint32_t tv_sec;
   uint32_t tv_nsec;
@@ -501,7 +563,7 @@
   vec[1].iov_base = &tid;
   vec[1].iov_len = sizeof(tid);
   timespec ts;
-  clock_gettime(CLOCK_REALTIME, &ts);
+  clock_gettime(__android_log_clockid(), &ts);
   log_time realtime_ts;
   realtime_ts.tv_sec = ts.tv_sec;
   realtime_ts.tv_nsec = ts.tv_nsec;
@@ -544,7 +606,7 @@
   vec[1].iov_base = &tid;
   vec[1].iov_len = sizeof(tid);
   timespec ts;
-  clock_gettime(CLOCK_REALTIME, &ts);
+  clock_gettime(__android_log_clockid(), &ts);
   log_time realtime_ts;
   realtime_ts.tv_sec = ts.tv_sec;
   realtime_ts.tv_nsec = ts.tv_nsec;
diff --git a/libc/upstream-netbsd/android/include/netbsd-compat.h b/libc/upstream-netbsd/android/include/netbsd-compat.h
index 0212d16..8d1c46b 100644
--- a/libc/upstream-netbsd/android/include/netbsd-compat.h
+++ b/libc/upstream-netbsd/android/include/netbsd-compat.h
@@ -32,6 +32,6 @@
 #define __unlockenv() 0
 
 #include <stddef.h>
-int reallocarr(void*, size_t, size_t);
+__LIBC_HIDDEN__ int reallocarr(void*, size_t, size_t);
 
 #endif
diff --git a/libm/Android.bp b/libm/Android.bp
index 0fc860a..081a139 100644
--- a/libm/Android.bp
+++ b/libm/Android.bp
@@ -3,18 +3,7 @@
 
 bionic_coverage = false
 
-// TODO: this comes from from upstream's libc, not libm, but it's an
-// implementation detail that should have hidden visibility, so it needs
-// to be in whatever library the math code is in.
-libm_common_src_files = ["digittoint.c"]
-
-// TODO: this is not in the BSDs.
-libm_common_src_files += [
-    "significandl.c",
-    "sincos.c",
-]
-
-libm_common_src_files += [
+libm_common_src_files = [
     "upstream-freebsd/lib/msun/bsdsrc/b_exp.c",
     "upstream-freebsd/lib/msun/bsdsrc/b_log.c",
     "upstream-freebsd/lib/msun/bsdsrc/b_tgamma.c",
@@ -186,8 +175,19 @@
 ]
 
 libm_common_src_files += [
-    "fake_long_double.c",
+    // TODO: this comes from from upstream's libc, not libm, but it's an
+    // implementation detail that should have hidden visibility, so it needs
+    // to be in whatever library the math code is in.
+    "digittoint.c",
+
+    // Functionality not in the BSDs.
+    "significandl.c",
+    "sincos.c",
+
+    // Modified versions of BSD code.
     "signbit.c",
+
+    // Home-grown stuff.
     "fabs.cpp",
 ]
 
@@ -292,6 +292,9 @@
     sanitize: ["never"],
 
     multilib: {
+        lib32: {
+            srcs: ["fake_long_double.c"],
+        },
         lib64: {
             srcs: libm_ld128_src_files,
             local_include_dirs: libm_ld_local_includes,
@@ -307,15 +310,18 @@
         arm: {
             srcs: [
                 "arm/fenv.c",
-                "arm/sqrt.S",
-                "arm/floor.S",
             ],
-            exclude_srcs: [
-                // TODO: these require neon not available in arm
-                "upstream-freebsd/lib/msun/src/e_sqrt.c",
-                "upstream-freebsd/lib/msun/src/e_sqrtf.c",
-                "upstream-freebsd/lib/msun/src/s_floor.c",
-            ],
+            armv7_a_neon: {
+                srcs: [
+                    "arm/sqrt.S",
+                    "arm/floor.S",
+                ],
+                exclude_srcs: [
+                    "upstream-freebsd/lib/msun/src/e_sqrt.c",
+                    "upstream-freebsd/lib/msun/src/e_sqrtf.c",
+                    "upstream-freebsd/lib/msun/src/s_floor.c",
+                ],
+            },
             instruction_set: "arm",
             ldflags: ["-Wl,--hash-style=both"],
             version_script: "libm.arm.map",
@@ -323,8 +329,8 @@
 
         arm64: {
             srcs: [
-                "arm64/fenv.c",
                 "arm64/ceil.S",
+                "arm64/fenv.c",
                 "arm64/fma.S",
                 "arm64/floor.S",
                 "arm64/lrint.S",
@@ -333,6 +339,8 @@
                 "arm64/trunc.S",
             ],
             exclude_srcs: [
+                "upstream-freebsd/lib/msun/src/e_sqrt.c",
+                "upstream-freebsd/lib/msun/src/e_sqrtf.c",
                 "upstream-freebsd/lib/msun/src/s_ceil.c",
                 "upstream-freebsd/lib/msun/src/s_ceilf.c",
                 "upstream-freebsd/lib/msun/src/s_fma.c",
@@ -345,8 +353,6 @@
                 "upstream-freebsd/lib/msun/src/s_lrintf.c",
                 "upstream-freebsd/lib/msun/src/s_rint.c",
                 "upstream-freebsd/lib/msun/src/s_rintf.c",
-                "upstream-freebsd/lib/msun/src/e_sqrt.c",
-                "upstream-freebsd/lib/msun/src/e_sqrtf.c",
                 "upstream-freebsd/lib/msun/src/s_trunc.c",
                 "upstream-freebsd/lib/msun/src/s_truncf.c",
             ],
@@ -364,8 +370,73 @@
         },
 
         x86: {
+            srcs: [
+                "i387/fenv.c",
+                "x86/sqrt.S",
+                "x86/sqrtf.S",
+                "x86/e_acos.S",
+                "x86/e_asin.S",
+                "x86/e_atan2.S",
+                "x86/e_cosh.S",
+                "x86/e_exp.S",
+                "x86/e_hypot.S",
+                "x86/e_log10.S",
+                "x86/e_log.S",
+                "x86/e_pow.S",
+                "x86/e_sinh.S",
+                "x86/libm_reduce_pi04l.S",
+                "x86/libm_sincos_huge.S",
+                "x86/libm_tancot_huge.S",
+                "x86/s_atan.S",
+                "x86/s_cbrt.S",
+                "x86/s_cos.S",
+                "x86/s_expm1.S",
+                "x86/s_log1p.S",
+                "x86/s_sin.S",
+                "x86/s_tanh.S",
+                "x86/s_tan.S",
+            ],
+            exclude_srcs: [
+                "upstream-freebsd/lib/msun/src/e_acos.c",
+                "upstream-freebsd/lib/msun/src/e_asin.c",
+                "upstream-freebsd/lib/msun/src/e_atan2.c",
+                "upstream-freebsd/lib/msun/src/e_cosh.c",
+                "upstream-freebsd/lib/msun/src/e_exp.c",
+                "upstream-freebsd/lib/msun/src/e_hypot.c",
+                "upstream-freebsd/lib/msun/src/e_log.c",
+                "upstream-freebsd/lib/msun/src/e_log10.c",
+                "upstream-freebsd/lib/msun/src/e_pow.c",
+                "upstream-freebsd/lib/msun/src/e_sinh.c",
+                "upstream-freebsd/lib/msun/src/e_sqrt.c",
+                "upstream-freebsd/lib/msun/src/e_sqrtf.c",
+                "upstream-freebsd/lib/msun/src/s_atan.c",
+                "upstream-freebsd/lib/msun/src/s_cbrt.c",
+                "upstream-freebsd/lib/msun/src/s_cos.c",
+                "upstream-freebsd/lib/msun/src/s_expm1.c",
+                "upstream-freebsd/lib/msun/src/s_log1p.c",
+                "upstream-freebsd/lib/msun/src/s_sin.c",
+                "upstream-freebsd/lib/msun/src/s_tan.c",
+                "upstream-freebsd/lib/msun/src/s_tanh.c",
+            ],
+            sse4_1: {
+                srcs: [
+                    "x86/ceil.S",
+                    "x86/ceilf.S",
+                    "x86/floor.S",
+                    "x86/floorf.S",
+                    "x86/trunc.S",
+                    "x86/truncf.S",
+                ],
+                exclude_srcs: [
+                    "upstream-freebsd/lib/msun/src/s_ceil.c",
+                    "upstream-freebsd/lib/msun/src/s_ceilf.c",
+                    "upstream-freebsd/lib/msun/src/s_floor.c",
+                    "upstream-freebsd/lib/msun/src/s_floorf.c",
+                    "upstream-freebsd/lib/msun/src/s_trunc.c",
+                    "upstream-freebsd/lib/msun/src/s_truncf.c",
+                ],
+            },
             local_include_dirs: ["i387"],
-            srcs: ["i387/fenv.c"],
             // Clang has wrong long double sizes for x86.
             clang: false,
             ldflags: ["-Wl,--hash-style=both"],
@@ -373,7 +444,69 @@
         },
 
         x86_64: {
-            srcs: ["amd64/fenv.c"],
+            srcs: [
+                "amd64/fenv.c",
+                "x86_64/sqrt.S",
+                "x86_64/sqrtf.S",
+                "x86_64/e_acos.S",
+                "x86_64/e_asin.S",
+                "x86_64/e_atan2.S",
+                "x86_64/e_cosh.S",
+                "x86_64/e_exp.S",
+                "x86_64/e_hypot.S",
+                "x86_64/e_log10.S",
+                "x86_64/e_log.S",
+                "x86_64/e_pow.S",
+                "x86_64/e_sinh.S",
+                "x86_64/s_atan.S",
+                "x86_64/s_cbrt.S",
+                "x86_64/s_cos.S",
+                "x86_64/s_expm1.S",
+                "x86_64/s_log1p.S",
+                "x86_64/s_sin.S",
+                "x86_64/s_tanh.S",
+                "x86_64/s_tan.S",
+            ],
+            exclude_srcs: [
+                "upstream-freebsd/lib/msun/src/e_acos.c",
+                "upstream-freebsd/lib/msun/src/e_asin.c",
+                "upstream-freebsd/lib/msun/src/e_atan2.c",
+                "upstream-freebsd/lib/msun/src/e_cosh.c",
+                "upstream-freebsd/lib/msun/src/e_exp.c",
+                "upstream-freebsd/lib/msun/src/e_hypot.c",
+                "upstream-freebsd/lib/msun/src/e_log.c",
+                "upstream-freebsd/lib/msun/src/e_log10.c",
+                "upstream-freebsd/lib/msun/src/e_pow.c",
+                "upstream-freebsd/lib/msun/src/e_sinh.c",
+                "upstream-freebsd/lib/msun/src/e_sqrt.c",
+                "upstream-freebsd/lib/msun/src/e_sqrtf.c",
+                "upstream-freebsd/lib/msun/src/s_atan.c",
+                "upstream-freebsd/lib/msun/src/s_cbrt.c",
+                "upstream-freebsd/lib/msun/src/s_cos.c",
+                "upstream-freebsd/lib/msun/src/s_expm1.c",
+                "upstream-freebsd/lib/msun/src/s_log1p.c",
+                "upstream-freebsd/lib/msun/src/s_sin.c",
+                "upstream-freebsd/lib/msun/src/s_tan.c",
+                "upstream-freebsd/lib/msun/src/s_tanh.c",
+            ],
+            sse4_1: {
+                srcs: [
+                    "x86_64/ceil.S",
+                    "x86_64/ceilf.S",
+                    "x86_64/floor.S",
+                    "x86_64/floorf.S",
+                    "x86_64/trunc.S",
+                    "x86_64/truncf.S",
+                ],
+                exclude_srcs: [
+                    "upstream-freebsd/lib/msun/src/s_ceil.c",
+                    "upstream-freebsd/lib/msun/src/s_ceilf.c",
+                    "upstream-freebsd/lib/msun/src/s_floor.c",
+                    "upstream-freebsd/lib/msun/src/s_floorf.c",
+                    "upstream-freebsd/lib/msun/src/s_trunc.c",
+                    "upstream-freebsd/lib/msun/src/s_truncf.c",
+                ],
+            },
             // Clang has wrong long double sizes for x86.
             clang: false,
             version_script: "libm.x86_64.map",
diff --git a/libm/Android.mk b/libm/Android.mk
index bd51e7c..faf3c50 100644
--- a/libm/Android.mk
+++ b/libm/Android.mk
@@ -22,14 +22,19 @@
     upstream-freebsd/lib/msun/bsdsrc/b_tgamma.c \
     upstream-freebsd/lib/msun/src/catrig.c \
     upstream-freebsd/lib/msun/src/catrigf.c \
+    upstream-freebsd/lib/msun/src/e_acos.c \
     upstream-freebsd/lib/msun/src/e_acosf.c \
     upstream-freebsd/lib/msun/src/e_acosh.c \
     upstream-freebsd/lib/msun/src/e_acoshf.c \
+    upstream-freebsd/lib/msun/src/e_asin.c \
     upstream-freebsd/lib/msun/src/e_asinf.c \
+    upstream-freebsd/lib/msun/src/e_atan2.c \
     upstream-freebsd/lib/msun/src/e_atan2f.c \
     upstream-freebsd/lib/msun/src/e_atanh.c \
     upstream-freebsd/lib/msun/src/e_atanhf.c \
+    upstream-freebsd/lib/msun/src/e_cosh.c \
     upstream-freebsd/lib/msun/src/e_coshf.c \
+    upstream-freebsd/lib/msun/src/e_exp.c \
     upstream-freebsd/lib/msun/src/e_expf.c \
     upstream-freebsd/lib/msun/src/e_fmod.c \
     upstream-freebsd/lib/msun/src/e_fmodf.c \
@@ -37,6 +42,7 @@
     upstream-freebsd/lib/msun/src/e_gammaf.c \
     upstream-freebsd/lib/msun/src/e_gammaf_r.c \
     upstream-freebsd/lib/msun/src/e_gamma_r.c \
+    upstream-freebsd/lib/msun/src/e_hypot.c \
     upstream-freebsd/lib/msun/src/e_hypotf.c \
     upstream-freebsd/lib/msun/src/e_j0.c \
     upstream-freebsd/lib/msun/src/e_j0f.c \
@@ -48,10 +54,13 @@
     upstream-freebsd/lib/msun/src/e_lgammaf.c \
     upstream-freebsd/lib/msun/src/e_lgammaf_r.c \
     upstream-freebsd/lib/msun/src/e_lgamma_r.c \
+    upstream-freebsd/lib/msun/src/e_log10.c \
     upstream-freebsd/lib/msun/src/e_log10f.c \
     upstream-freebsd/lib/msun/src/e_log2.c \
     upstream-freebsd/lib/msun/src/e_log2f.c \
+    upstream-freebsd/lib/msun/src/e_log.c \
     upstream-freebsd/lib/msun/src/e_logf.c \
+    upstream-freebsd/lib/msun/src/e_pow.c \
     upstream-freebsd/lib/msun/src/e_powf.c \
     upstream-freebsd/lib/msun/src/e_remainder.c \
     upstream-freebsd/lib/msun/src/e_remainderf.c \
@@ -59,7 +68,10 @@
     upstream-freebsd/lib/msun/src/e_rem_pio2f.c \
     upstream-freebsd/lib/msun/src/e_scalb.c \
     upstream-freebsd/lib/msun/src/e_scalbf.c \
+    upstream-freebsd/lib/msun/src/e_sinh.c \
     upstream-freebsd/lib/msun/src/e_sinhf.c \
+    upstream-freebsd/lib/msun/src/e_sqrt.c \
+    upstream-freebsd/lib/msun/src/e_sqrtf.c \
     upstream-freebsd/lib/msun/src/imprecise.c \
     upstream-freebsd/lib/msun/src/k_cos.c \
     upstream-freebsd/lib/msun/src/k_cosf.c \
@@ -72,13 +84,17 @@
     upstream-freebsd/lib/msun/src/k_tanf.c \
     upstream-freebsd/lib/msun/src/s_asinh.c \
     upstream-freebsd/lib/msun/src/s_asinhf.c \
+    upstream-freebsd/lib/msun/src/s_atan.c \
     upstream-freebsd/lib/msun/src/s_atanf.c \
     upstream-freebsd/lib/msun/src/s_carg.c \
     upstream-freebsd/lib/msun/src/s_cargf.c \
     upstream-freebsd/lib/msun/src/s_cargl.c \
+    upstream-freebsd/lib/msun/src/s_cbrt.c \
     upstream-freebsd/lib/msun/src/s_cbrtf.c \
     upstream-freebsd/lib/msun/src/s_ccosh.c \
     upstream-freebsd/lib/msun/src/s_ccoshf.c \
+    upstream-freebsd/lib/msun/src/s_ceil.c \
+    upstream-freebsd/lib/msun/src/s_ceilf.c \
     upstream-freebsd/lib/msun/src/s_cexp.c \
     upstream-freebsd/lib/msun/src/s_cexpf.c \
     upstream-freebsd/lib/msun/src/s_cimag.c \
@@ -89,6 +105,7 @@
     upstream-freebsd/lib/msun/src/s_conjl.c \
     upstream-freebsd/lib/msun/src/s_copysign.c \
     upstream-freebsd/lib/msun/src/s_copysignf.c \
+    upstream-freebsd/lib/msun/src/s_cos.c \
     upstream-freebsd/lib/msun/src/s_cosf.c \
     upstream-freebsd/lib/msun/src/s_cproj.c \
     upstream-freebsd/lib/msun/src/s_cprojf.c \
@@ -107,10 +124,15 @@
     upstream-freebsd/lib/msun/src/s_erff.c \
     upstream-freebsd/lib/msun/src/s_exp2.c \
     upstream-freebsd/lib/msun/src/s_exp2f.c \
+    upstream-freebsd/lib/msun/src/s_expm1.c \
     upstream-freebsd/lib/msun/src/s_expm1f.c \
     upstream-freebsd/lib/msun/src/s_fdim.c \
     upstream-freebsd/lib/msun/src/s_finite.c \
     upstream-freebsd/lib/msun/src/s_finitef.c \
+    upstream-freebsd/lib/msun/src/s_floor.c \
+    upstream-freebsd/lib/msun/src/s_floorf.c \
+    upstream-freebsd/lib/msun/src/s_fma.c \
+    upstream-freebsd/lib/msun/src/s_fmaf.c \
     upstream-freebsd/lib/msun/src/s_fmax.c \
     upstream-freebsd/lib/msun/src/s_fmaxf.c \
     upstream-freebsd/lib/msun/src/s_fmin.c \
@@ -119,11 +141,16 @@
     upstream-freebsd/lib/msun/src/s_frexpf.c \
     upstream-freebsd/lib/msun/src/s_ilogb.c \
     upstream-freebsd/lib/msun/src/s_ilogbf.c \
+    upstream-freebsd/lib/msun/src/s_llrint.c \
+    upstream-freebsd/lib/msun/src/s_llrintf.c \
     upstream-freebsd/lib/msun/src/s_llround.c \
     upstream-freebsd/lib/msun/src/s_llroundf.c \
+    upstream-freebsd/lib/msun/src/s_log1p.c \
     upstream-freebsd/lib/msun/src/s_log1pf.c \
     upstream-freebsd/lib/msun/src/s_logb.c \
     upstream-freebsd/lib/msun/src/s_logbf.c \
+    upstream-freebsd/lib/msun/src/s_lrint.c \
+    upstream-freebsd/lib/msun/src/s_lrintf.c \
     upstream-freebsd/lib/msun/src/s_lround.c \
     upstream-freebsd/lib/msun/src/s_lroundf.c \
     upstream-freebsd/lib/msun/src/s_modf.c \
@@ -134,6 +161,8 @@
     upstream-freebsd/lib/msun/src/s_nextafterf.c \
     upstream-freebsd/lib/msun/src/s_remquo.c \
     upstream-freebsd/lib/msun/src/s_remquof.c \
+    upstream-freebsd/lib/msun/src/s_rint.c \
+    upstream-freebsd/lib/msun/src/s_rintf.c \
     upstream-freebsd/lib/msun/src/s_round.c \
     upstream-freebsd/lib/msun/src/s_roundf.c \
     upstream-freebsd/lib/msun/src/s_scalbln.c \
@@ -142,10 +171,15 @@
     upstream-freebsd/lib/msun/src/s_signgam.c \
     upstream-freebsd/lib/msun/src/s_significand.c \
     upstream-freebsd/lib/msun/src/s_significandf.c \
+    upstream-freebsd/lib/msun/src/s_sin.c \
     upstream-freebsd/lib/msun/src/s_sinf.c \
+    upstream-freebsd/lib/msun/src/s_tan.c \
     upstream-freebsd/lib/msun/src/s_tanf.c \
+    upstream-freebsd/lib/msun/src/s_tanh.c \
     upstream-freebsd/lib/msun/src/s_tanhf.c \
     upstream-freebsd/lib/msun/src/s_tgammaf.c \
+    upstream-freebsd/lib/msun/src/s_trunc.c \
+    upstream-freebsd/lib/msun/src/s_truncf.c \
     upstream-freebsd/lib/msun/src/w_cabs.c \
     upstream-freebsd/lib/msun/src/w_cabsf.c \
     upstream-freebsd/lib/msun/src/w_cabsl.c \
@@ -236,37 +270,6 @@
 # -----------------------------------------------------------------------------
 LOCAL_SRC_FILES_arm += \
     arm/fenv.c \
-    upstream-freebsd/lib/msun/src/e_acos.c \
-    upstream-freebsd/lib/msun/src/e_asin.c \
-    upstream-freebsd/lib/msun/src/e_atan2.c \
-    upstream-freebsd/lib/msun/src/e_cosh.c \
-    upstream-freebsd/lib/msun/src/e_exp.c \
-    upstream-freebsd/lib/msun/src/e_hypot.c \
-    upstream-freebsd/lib/msun/src/e_log.c \
-    upstream-freebsd/lib/msun/src/e_log10.c \
-    upstream-freebsd/lib/msun/src/e_pow.c \
-    upstream-freebsd/lib/msun/src/e_sinh.c \
-    upstream-freebsd/lib/msun/src/s_atan.c \
-    upstream-freebsd/lib/msun/src/s_cbrt.c \
-    upstream-freebsd/lib/msun/src/s_ceil.c \
-    upstream-freebsd/lib/msun/src/s_ceilf.c \
-    upstream-freebsd/lib/msun/src/s_cos.c \
-    upstream-freebsd/lib/msun/src/s_fma.c \
-    upstream-freebsd/lib/msun/src/s_fmaf.c \
-    upstream-freebsd/lib/msun/src/s_floorf.c \
-    upstream-freebsd/lib/msun/src/s_expm1.c \
-    upstream-freebsd/lib/msun/src/s_llrint.c \
-    upstream-freebsd/lib/msun/src/s_llrintf.c \
-    upstream-freebsd/lib/msun/src/s_log1p.c \
-    upstream-freebsd/lib/msun/src/s_lrint.c \
-    upstream-freebsd/lib/msun/src/s_lrintf.c \
-    upstream-freebsd/lib/msun/src/s_rint.c \
-    upstream-freebsd/lib/msun/src/s_rintf.c \
-    upstream-freebsd/lib/msun/src/s_sin.c \
-    upstream-freebsd/lib/msun/src/s_tan.c \
-    upstream-freebsd/lib/msun/src/s_tanh.c \
-    upstream-freebsd/lib/msun/src/s_trunc.c \
-    upstream-freebsd/lib/msun/src/s_truncf.c \
 
 # s_floor.S requires neon instructions.
 ifdef TARGET_2ND_ARCH
@@ -276,17 +279,16 @@
 endif
 
 # Use the C version on armv7-a since it doesn't support neon instructions.
-ifeq ($(arch_variant),armv7-a)
-LOCAL_SRC_FILES_arm += \
-    upstream-freebsd/lib/msun/src/e_sqrt.c \
-    upstream-freebsd/lib/msun/src/e_sqrtf.c \
-    upstream-freebsd/lib/msun/src/s_floor.c \
-
-else
+ifneq ($(arch_variant),armv7-a)
 LOCAL_SRC_FILES_arm += \
     arm/sqrt.S \
     arm/floor.S \
 
+LOCAL_SRC_FILES_EXCLUDE_arm += \
+    upstream-freebsd/lib/msun/src/e_sqrt.c \
+    upstream-freebsd/lib/msun/src/e_sqrtf.c \
+    upstream-freebsd/lib/msun/src/s_floor.c \
+
 endif
 
 # -----------------------------------------------------------------------------
@@ -301,64 +303,30 @@
     arm64/rint.S \
     arm64/sqrt.S \
     arm64/trunc.S \
-    upstream-freebsd/lib/msun/src/e_acos.c \
-    upstream-freebsd/lib/msun/src/e_asin.c \
-    upstream-freebsd/lib/msun/src/e_atan2.c \
-    upstream-freebsd/lib/msun/src/e_cosh.c \
-    upstream-freebsd/lib/msun/src/e_exp.c \
-    upstream-freebsd/lib/msun/src/e_hypot.c \
-    upstream-freebsd/lib/msun/src/e_log.c \
-    upstream-freebsd/lib/msun/src/e_log10.c \
-    upstream-freebsd/lib/msun/src/e_pow.c \
-    upstream-freebsd/lib/msun/src/e_sinh.c \
-    upstream-freebsd/lib/msun/src/s_atan.c \
-    upstream-freebsd/lib/msun/src/s_cbrt.c \
-    upstream-freebsd/lib/msun/src/s_cos.c \
-    upstream-freebsd/lib/msun/src/s_expm1.c \
-    upstream-freebsd/lib/msun/src/s_log1p.c \
-    upstream-freebsd/lib/msun/src/s_sin.c \
-    upstream-freebsd/lib/msun/src/s_tan.c \
-    upstream-freebsd/lib/msun/src/s_tanh.c \
+
+LOCAL_SRC_FILES_EXCLUDE_arm64 += \
+    upstream-freebsd/lib/msun/src/e_sqrt.c \
+    upstream-freebsd/lib/msun/src/e_sqrtf.c \
+    upstream-freebsd/lib/msun/src/s_ceil.c \
+    upstream-freebsd/lib/msun/src/s_ceilf.c \
+    upstream-freebsd/lib/msun/src/s_fma.c \
+    upstream-freebsd/lib/msun/src/s_fmaf.c \
+    upstream-freebsd/lib/msun/src/s_floor.c \
+    upstream-freebsd/lib/msun/src/s_floorf.c \
+    upstream-freebsd/lib/msun/src/s_llrint.c \
+    upstream-freebsd/lib/msun/src/s_llrintf.c \
+    upstream-freebsd/lib/msun/src/s_lrint.c \
+    upstream-freebsd/lib/msun/src/s_lrintf.c \
+    upstream-freebsd/lib/msun/src/s_rint.c \
+    upstream-freebsd/lib/msun/src/s_rintf.c \
+    upstream-freebsd/lib/msun/src/s_trunc.c \
+    upstream-freebsd/lib/msun/src/s_truncf.c \
 
 # -----------------------------------------------------------------------------
 # mips
 # -----------------------------------------------------------------------------
 libm_mips_arch_files := \
     mips/fenv.c \
-    upstream-freebsd/lib/msun/src/e_acos.c \
-    upstream-freebsd/lib/msun/src/e_asin.c \
-    upstream-freebsd/lib/msun/src/e_atan2.c \
-    upstream-freebsd/lib/msun/src/e_cosh.c \
-    upstream-freebsd/lib/msun/src/e_exp.c \
-    upstream-freebsd/lib/msun/src/e_hypot.c \
-    upstream-freebsd/lib/msun/src/e_log.c \
-    upstream-freebsd/lib/msun/src/e_log10.c \
-    upstream-freebsd/lib/msun/src/e_pow.c \
-    upstream-freebsd/lib/msun/src/e_sinh.c \
-    upstream-freebsd/lib/msun/src/e_sqrt.c \
-    upstream-freebsd/lib/msun/src/e_sqrtf.c \
-    upstream-freebsd/lib/msun/src/s_atan.c \
-    upstream-freebsd/lib/msun/src/s_cbrt.c \
-    upstream-freebsd/lib/msun/src/s_ceil.c \
-    upstream-freebsd/lib/msun/src/s_ceilf.c \
-    upstream-freebsd/lib/msun/src/s_cos.c \
-    upstream-freebsd/lib/msun/src/s_fma.c \
-    upstream-freebsd/lib/msun/src/s_fmaf.c \
-    upstream-freebsd/lib/msun/src/s_floor.c \
-    upstream-freebsd/lib/msun/src/s_floorf.c \
-    upstream-freebsd/lib/msun/src/s_expm1.c \
-    upstream-freebsd/lib/msun/src/s_llrint.c \
-    upstream-freebsd/lib/msun/src/s_llrintf.c \
-    upstream-freebsd/lib/msun/src/s_log1p.c \
-    upstream-freebsd/lib/msun/src/s_lrint.c \
-    upstream-freebsd/lib/msun/src/s_lrintf.c \
-    upstream-freebsd/lib/msun/src/s_rint.c \
-    upstream-freebsd/lib/msun/src/s_rintf.c \
-    upstream-freebsd/lib/msun/src/s_sin.c \
-    upstream-freebsd/lib/msun/src/s_tan.c \
-    upstream-freebsd/lib/msun/src/s_tanh.c \
-    upstream-freebsd/lib/msun/src/s_trunc.c \
-    upstream-freebsd/lib/msun/src/s_truncf.c \
 
 LOCAL_SRC_FILES_mips += $(libm_mips_arch_files)
 LOCAL_SRC_FILES_mips64 += $(libm_mips_arch_files)
@@ -368,14 +336,6 @@
 # -----------------------------------------------------------------------------
 LOCAL_SRC_FILES_x86 += \
     i387/fenv.c \
-    upstream-freebsd/lib/msun/src/s_fma.c \
-    upstream-freebsd/lib/msun/src/s_fmaf.c \
-    upstream-freebsd/lib/msun/src/s_llrint.c \
-    upstream-freebsd/lib/msun/src/s_llrintf.c \
-    upstream-freebsd/lib/msun/src/s_lrint.c \
-    upstream-freebsd/lib/msun/src/s_lrintf.c \
-    upstream-freebsd/lib/msun/src/s_rint.c \
-    upstream-freebsd/lib/msun/src/s_rintf.c \
     x86/sqrt.S \
     x86/sqrtf.S \
     x86/e_acos.S \
@@ -400,6 +360,28 @@
     x86/s_tanh.S \
     x86/s_tan.S \
 
+LOCAL_SRC_FILES_EXCLUDE_x86 += \
+    upstream-freebsd/lib/msun/src/e_acos.c \
+    upstream-freebsd/lib/msun/src/e_asin.c \
+    upstream-freebsd/lib/msun/src/e_atan2.c \
+    upstream-freebsd/lib/msun/src/e_cosh.c \
+    upstream-freebsd/lib/msun/src/e_exp.c \
+    upstream-freebsd/lib/msun/src/e_hypot.c \
+    upstream-freebsd/lib/msun/src/e_log.c \
+    upstream-freebsd/lib/msun/src/e_log10.c \
+    upstream-freebsd/lib/msun/src/e_pow.c \
+    upstream-freebsd/lib/msun/src/e_sinh.c \
+    upstream-freebsd/lib/msun/src/e_sqrt.c \
+    upstream-freebsd/lib/msun/src/e_sqrtf.c \
+    upstream-freebsd/lib/msun/src/s_atan.c \
+    upstream-freebsd/lib/msun/src/s_cbrt.c \
+    upstream-freebsd/lib/msun/src/s_cos.c \
+    upstream-freebsd/lib/msun/src/s_expm1.c \
+    upstream-freebsd/lib/msun/src/s_log1p.c \
+    upstream-freebsd/lib/msun/src/s_sin.c \
+    upstream-freebsd/lib/msun/src/s_tan.c \
+    upstream-freebsd/lib/msun/src/s_tanh.c \
+
 ifeq ($(ARCH_X86_HAVE_SSE4_1),true)
 LOCAL_SRC_FILES_x86 += \
     x86/ceil.S \
@@ -409,8 +391,7 @@
     x86/trunc.S \
     x86/truncf.S \
 
-else
-LOCAL_SRC_FILES_x86 += \
+LOCAL_SRC_FILES_EXCLUDE_x86 += \
     upstream-freebsd/lib/msun/src/s_ceil.c \
     upstream-freebsd/lib/msun/src/s_ceilf.c \
     upstream-freebsd/lib/msun/src/s_floor.c \
@@ -425,14 +406,6 @@
 # -----------------------------------------------------------------------------
 LOCAL_SRC_FILES_x86_64 += \
     amd64/fenv.c \
-    upstream-freebsd/lib/msun/src/s_fma.c \
-    upstream-freebsd/lib/msun/src/s_fmaf.c \
-    upstream-freebsd/lib/msun/src/s_llrint.c \
-    upstream-freebsd/lib/msun/src/s_llrintf.c \
-    upstream-freebsd/lib/msun/src/s_lrint.c \
-    upstream-freebsd/lib/msun/src/s_lrintf.c \
-    upstream-freebsd/lib/msun/src/s_rint.c \
-    upstream-freebsd/lib/msun/src/s_rintf.c \
     x86_64/sqrt.S \
     x86_64/sqrtf.S \
     x86_64/e_acos.S \
@@ -454,6 +427,28 @@
     x86_64/s_tanh.S \
     x86_64/s_tan.S \
 
+LOCAL_SRC_FILES_EXCLUDE_x86_64 += \
+    upstream-freebsd/lib/msun/src/e_acos.c \
+    upstream-freebsd/lib/msun/src/e_asin.c \
+    upstream-freebsd/lib/msun/src/e_atan2.c \
+    upstream-freebsd/lib/msun/src/e_cosh.c \
+    upstream-freebsd/lib/msun/src/e_exp.c \
+    upstream-freebsd/lib/msun/src/e_hypot.c \
+    upstream-freebsd/lib/msun/src/e_log.c \
+    upstream-freebsd/lib/msun/src/e_log10.c \
+    upstream-freebsd/lib/msun/src/e_pow.c \
+    upstream-freebsd/lib/msun/src/e_sinh.c \
+    upstream-freebsd/lib/msun/src/e_sqrt.c \
+    upstream-freebsd/lib/msun/src/e_sqrtf.c \
+    upstream-freebsd/lib/msun/src/s_atan.c \
+    upstream-freebsd/lib/msun/src/s_cbrt.c \
+    upstream-freebsd/lib/msun/src/s_cos.c \
+    upstream-freebsd/lib/msun/src/s_expm1.c \
+    upstream-freebsd/lib/msun/src/s_log1p.c \
+    upstream-freebsd/lib/msun/src/s_sin.c \
+    upstream-freebsd/lib/msun/src/s_tan.c \
+    upstream-freebsd/lib/msun/src/s_tanh.c \
+
 ifeq ($(ARCH_X86_HAVE_SSE4_1),true)
 LOCAL_SRC_FILES_x86_64 += \
     x86_64/ceil.S \
@@ -463,8 +458,7 @@
     x86_64/trunc.S \
     x86_64/truncf.S \
 
-else
-LOCAL_SRC_FILES_x86_64 += \
+LOCAL_SRC_FILES_EXCLUDE_x86_64 += \
     upstream-freebsd/lib/msun/src/s_ceil.c \
     upstream-freebsd/lib/msun/src/s_ceilf.c \
     upstream-freebsd/lib/msun/src/s_floor.c \
diff --git a/linker/linker.cpp b/linker/linker.cpp
index 82d0d9e..028e490 100644
--- a/linker/linker.cpp
+++ b/linker/linker.cpp
@@ -37,7 +37,6 @@
 #include <string.h>
 #include <sys/mman.h>
 #include <sys/param.h>
-#include <sys/prctl.h>
 #include <unistd.h>
 
 #include <new>
@@ -544,13 +543,6 @@
 static bool realpath_fd(int fd, std::string* realpath) {
   std::vector<char> buf(PATH_MAX), proc_self_fd(PATH_MAX);
   __libc_format_buffer(&proc_self_fd[0], proc_self_fd.size(), "/proc/self/fd/%d", fd);
-  // set DUMPABLE to 1 to access /proc/self/fd
-  int dumpable = prctl(PR_GET_DUMPABLE, 0, 0, 0, 0);
-  prctl(PR_SET_DUMPABLE, 1, 0, 0, 0);
-  auto guard = make_scope_guard([&]() {
-    // restore dumpable
-    prctl(PR_SET_DUMPABLE, dumpable, 0, 0, 0);
-  });
   if (readlink(&proc_self_fd[0], &buf[0], buf.size()) == -1) {
     PRINT("readlink('%s') failed: %s [fd=%d]", &proc_self_fd[0], strerror(errno), fd);
     return false;