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authorDimitry Andric <dim@FreeBSD.org>2015-09-06 18:41:23 +0000
committerDimitry Andric <dim@FreeBSD.org>2015-09-06 18:41:23 +0000
commitf31bcc68c72371a2bf63aead9f3373a1ff2053b6 (patch)
treeb259e5d585da0f8cde9579939a74d5ef44c72abd /lib/sanitizer_common/sanitizer_mac.cc
parentcd2dd3df15523e2be8d2bbace27641d6ac9fa40d (diff)
downloadsrc-f31bcc68c72371a2bf63aead9f3373a1ff2053b6.tar.gz
src-f31bcc68c72371a2bf63aead9f3373a1ff2053b6.zip
Import compiler-rt 3.7.0 release (r246257).vendor/compiler-rt/compiler-rt-release_370-r246257
Notes
Notes: svn path=/vendor/compiler-rt/dist/; revision=287516 svn path=/vendor/compiler-rt/compiler-rt-release_370-r246257/; revision=287517; tag=vendor/compiler-rt/compiler-rt-release_370-r246257
Diffstat (limited to 'lib/sanitizer_common/sanitizer_mac.cc')
-rw-r--r--lib/sanitizer_common/sanitizer_mac.cc105
1 files changed, 86 insertions, 19 deletions
diff --git a/lib/sanitizer_common/sanitizer_mac.cc b/lib/sanitizer_common/sanitizer_mac.cc
index 39a5c7e8d24f..dddce1c1583c 100644
--- a/lib/sanitizer_common/sanitizer_mac.cc
+++ b/lib/sanitizer_common/sanitizer_mac.cc
@@ -27,21 +27,30 @@
#include "sanitizer_libc.h"
#include "sanitizer_mac.h"
#include "sanitizer_placement_new.h"
+#include "sanitizer_platform_limits_posix.h"
#include "sanitizer_procmaps.h"
+#if !SANITIZER_IOS
#include <crt_externs.h> // for _NSGetEnviron
+#else
+extern char **environ;
+#endif
+
+#include <errno.h>
#include <fcntl.h>
+#include <libkern/OSAtomic.h>
+#include <mach-o/dyld.h>
+#include <mach/mach.h>
#include <pthread.h>
#include <sched.h>
#include <signal.h>
+#include <stdlib.h>
#include <sys/mman.h>
#include <sys/resource.h>
#include <sys/stat.h>
#include <sys/sysctl.h>
#include <sys/types.h>
#include <unistd.h>
-#include <libkern/OSAtomic.h>
-#include <errno.h>
namespace __sanitizer {
@@ -57,6 +66,10 @@ uptr internal_munmap(void *addr, uptr length) {
return munmap(addr, length);
}
+int internal_mprotect(void *addr, uptr length, int prot) {
+ return mprotect(addr, length, prot);
+}
+
uptr internal_close(fd_t fd) {
return close(fd);
}
@@ -69,11 +82,6 @@ uptr internal_open(const char *filename, int flags, u32 mode) {
return open(filename, flags, mode);
}
-uptr OpenFile(const char *filename, bool write) {
- return internal_open(filename,
- write ? O_WRONLY | O_CREAT : O_RDONLY, 0660);
-}
-
uptr internal_read(fd_t fd, void *buf, uptr count) {
return read(fd, buf, count);
}
@@ -130,6 +138,13 @@ int internal_sigaction(int signum, const void *act, void *oldact) {
(struct sigaction *)act, (struct sigaction *)oldact);
}
+void internal_sigfillset(__sanitizer_sigset_t *set) { sigfillset(set); }
+
+uptr internal_sigprocmask(int how, __sanitizer_sigset_t *set,
+ __sanitizer_sigset_t *oldset) {
+ return sigprocmask(how, set, oldset);
+}
+
int internal_fork() {
// TODO(glider): this may call user's pthread_atfork() handlers which is bad.
return fork();
@@ -180,7 +195,8 @@ void GetThreadStackTopAndBottom(bool at_initialization, uptr *stack_top,
*stack_bottom = *stack_top - stacksize;
}
-const char *GetEnv(const char *name) {
+char **GetEnviron() {
+#if !SANITIZER_IOS
char ***env_ptr = _NSGetEnviron();
if (!env_ptr) {
Report("_NSGetEnviron() returned NULL. Please make sure __asan_init() is "
@@ -188,29 +204,45 @@ const char *GetEnv(const char *name) {
CHECK(env_ptr);
}
char **environ = *env_ptr;
+#endif
CHECK(environ);
+ return environ;
+}
+
+const char *GetEnv(const char *name) {
+ char **env = GetEnviron();
uptr name_len = internal_strlen(name);
- while (*environ != 0) {
- uptr len = internal_strlen(*environ);
+ while (*env != 0) {
+ uptr len = internal_strlen(*env);
if (len > name_len) {
- const char *p = *environ;
+ const char *p = *env;
if (!internal_memcmp(p, name, name_len) &&
p[name_len] == '=') { // Match.
- return *environ + name_len + 1; // String starting after =.
+ return *env + name_len + 1; // String starting after =.
}
}
- environ++;
+ env++;
}
return 0;
}
-void ReExec() {
- UNIMPLEMENTED();
+uptr ReadBinaryName(/*out*/char *buf, uptr buf_len) {
+ CHECK_LE(kMaxPathLength, buf_len);
+
+ // On OS X the executable path is saved to the stack by dyld. Reading it
+ // from there is much faster than calling dladdr, especially for large
+ // binaries with symbols.
+ InternalScopedString exe_path(kMaxPathLength);
+ uint32_t size = exe_path.size();
+ if (_NSGetExecutablePath(exe_path.data(), &size) == 0 &&
+ realpath(exe_path.data(), buf) != 0) {
+ return internal_strlen(buf);
+ }
+ return 0;
}
-void PrepareForSandboxing(__sanitizer_sandbox_arguments *args) {
- (void)args;
- // Nothing here for now.
+void ReExec() {
+ UNIMPLEMENTED();
}
uptr GetPageSize() {
@@ -322,12 +354,47 @@ MacosVersion GetMacosVersion() {
}
uptr GetRSS() {
- return 0;
+ struct task_basic_info info;
+ unsigned count = TASK_BASIC_INFO_COUNT;
+ kern_return_t result =
+ task_info(mach_task_self(), TASK_BASIC_INFO, (task_info_t)&info, &count);
+ if (UNLIKELY(result != KERN_SUCCESS)) {
+ Report("Cannot get task info. Error: %d\n", result);
+ Die();
+ }
+ return info.resident_size;
}
void *internal_start_thread(void (*func)(void *arg), void *arg) { return 0; }
void internal_join_thread(void *th) { }
+void GetPcSpBp(void *context, uptr *pc, uptr *sp, uptr *bp) {
+ ucontext_t *ucontext = (ucontext_t*)context;
+# if defined(__aarch64__)
+ *pc = ucontext->uc_mcontext->__ss.__pc;
+# if defined(__IPHONE_8_0) && __IPHONE_OS_VERSION_MAX_ALLOWED >= __IPHONE_8_0
+ *bp = ucontext->uc_mcontext->__ss.__fp;
+# else
+ *bp = ucontext->uc_mcontext->__ss.__lr;
+# endif
+ *sp = ucontext->uc_mcontext->__ss.__sp;
+# elif defined(__x86_64__)
+ *pc = ucontext->uc_mcontext->__ss.__rip;
+ *bp = ucontext->uc_mcontext->__ss.__rbp;
+ *sp = ucontext->uc_mcontext->__ss.__rsp;
+# elif defined(__arm__)
+ *pc = ucontext->uc_mcontext->__ss.__pc;
+ *bp = ucontext->uc_mcontext->__ss.__r[7];
+ *sp = ucontext->uc_mcontext->__ss.__sp;
+# elif defined(__i386__)
+ *pc = ucontext->uc_mcontext->__ss.__eip;
+ *bp = ucontext->uc_mcontext->__ss.__ebp;
+ *sp = ucontext->uc_mcontext->__ss.__esp;
+# else
+# error "Unknown architecture"
+# endif
+}
+
} // namespace __sanitizer
#endif // SANITIZER_MAC