1 //===-- sanitizer_mac.cpp -------------------------------------------------===//
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
7 //===----------------------------------------------------------------------===//
9 // This file is shared between various sanitizers' runtime libraries and
10 // implements OSX-specific functions.
11 //===----------------------------------------------------------------------===//
13 #include "sanitizer_platform.h"
15 #include "sanitizer_mac.h"
16 #include "interception/interception.h"
18 // Use 64-bit inodes in file operations. ASan does not support OS X 10.5, so
19 // the clients will most certainly use 64-bit ones as well.
20 #ifndef _DARWIN_USE_64_BIT_INODE
21 #define _DARWIN_USE_64_BIT_INODE 1
25 #include "sanitizer_common.h"
26 #include "sanitizer_file.h"
27 #include "sanitizer_flags.h"
28 #include "sanitizer_internal_defs.h"
29 #include "sanitizer_libc.h"
30 #include "sanitizer_platform_limits_posix.h"
31 #include "sanitizer_procmaps.h"
32 #include "sanitizer_ptrauth.h"
35 #include <crt_externs.h> // for _NSGetEnviron
37 extern char **environ
;
40 #if defined(__has_include) && __has_include(<os/trace.h>) && defined(__BLOCKS__)
41 #define SANITIZER_OS_TRACE 1
44 #define SANITIZER_OS_TRACE 0
47 // import new crash reporting api
48 #if defined(__has_include) && __has_include(<CrashReporterClient.h>)
49 #define HAVE_CRASHREPORTERCLIENT_H 1
50 #include <CrashReporterClient.h>
52 #define HAVE_CRASHREPORTERCLIENT_H 0
56 #include <crt_externs.h> // for _NSGetArgv and _NSGetEnviron
59 extern char ***_NSGetArgv(void);
64 #include <dlfcn.h> // for dladdr()
67 #include <libkern/OSAtomic.h>
68 #include <mach-o/dyld.h>
69 #include <mach/mach.h>
70 #include <mach/mach_time.h>
71 #include <mach/vm_statistics.h>
72 #include <malloc/malloc.h>
73 #if defined(__has_builtin) && __has_builtin(__builtin_os_log_format)
76 /* Without support for __builtin_os_log_format, fall back to the older
78 # define OS_LOG_DEFAULT 0
79 # define os_log_error(A,B,C) \
80 asl_log(nullptr, nullptr, ASL_LEVEL_ERR, "%s", (C));
87 #include <sys/ioctl.h>
89 #include <sys/resource.h>
91 #include <sys/sysctl.h>
92 #include <sys/types.h>
97 // From <crt_externs.h>, but we don't have that file on iOS.
99 extern char ***_NSGetArgv(void);
100 extern char ***_NSGetEnviron(void);
103 // From <mach/mach_vm.h>, but we don't have that file on iOS.
105 extern kern_return_t
mach_vm_region_recurse(
106 vm_map_t target_task
,
107 mach_vm_address_t
*address
,
108 mach_vm_size_t
*size
,
109 natural_t
*nesting_depth
,
110 vm_region_recurse_info_t info
,
111 mach_msg_type_number_t
*infoCnt
);
114 namespace __sanitizer
{
116 #include "sanitizer_syscall_generic.inc"
118 // Direct syscalls, don't call libmalloc hooks (but not available on 10.6).
119 extern "C" void *__mmap(void *addr
, size_t len
, int prot
, int flags
, int fildes
,
120 off_t off
) SANITIZER_WEAK_ATTRIBUTE
;
121 extern "C" int __munmap(void *, size_t) SANITIZER_WEAK_ATTRIBUTE
;
123 // ---------------------- sanitizer_libc.h
125 // From <mach/vm_statistics.h>, but not on older OSs.
126 #ifndef VM_MEMORY_SANITIZER
127 #define VM_MEMORY_SANITIZER 99
130 // XNU on Darwin provides a mmap flag that optimizes allocation/deallocation of
131 // giant memory regions (i.e. shadow memory regions).
132 #define kXnuFastMmapFd 0x4
133 static size_t kXnuFastMmapThreshold
= 2 << 30; // 2 GB
134 static bool use_xnu_fast_mmap
= false;
136 uptr
internal_mmap(void *addr
, size_t length
, int prot
, int flags
,
137 int fd
, u64 offset
) {
139 fd
= VM_MAKE_TAG(VM_MEMORY_SANITIZER
);
140 if (length
>= kXnuFastMmapThreshold
) {
141 if (use_xnu_fast_mmap
) fd
|= kXnuFastMmapFd
;
144 if (&__mmap
) return (uptr
)__mmap(addr
, length
, prot
, flags
, fd
, offset
);
145 return (uptr
)mmap(addr
, length
, prot
, flags
, fd
, offset
);
148 uptr
internal_munmap(void *addr
, uptr length
) {
149 if (&__munmap
) return __munmap(addr
, length
);
150 return munmap(addr
, length
);
153 uptr
internal_mremap(void *old_address
, uptr old_size
, uptr new_size
, int flags
,
155 CHECK(false && "internal_mremap is unimplemented on Mac");
159 int internal_mprotect(void *addr
, uptr length
, int prot
) {
160 return mprotect(addr
, length
, prot
);
163 int internal_madvise(uptr addr
, uptr length
, int advice
) {
164 return madvise((void *)addr
, length
, advice
);
167 uptr
internal_close(fd_t fd
) {
171 uptr
internal_open(const char *filename
, int flags
) {
172 return open(filename
, flags
);
175 uptr
internal_open(const char *filename
, int flags
, u32 mode
) {
176 return open(filename
, flags
, mode
);
179 uptr
internal_read(fd_t fd
, void *buf
, uptr count
) {
180 return read(fd
, buf
, count
);
183 uptr
internal_write(fd_t fd
, const void *buf
, uptr count
) {
184 return write(fd
, buf
, count
);
187 uptr
internal_stat(const char *path
, void *buf
) {
188 return stat(path
, (struct stat
*)buf
);
191 uptr
internal_lstat(const char *path
, void *buf
) {
192 return lstat(path
, (struct stat
*)buf
);
195 uptr
internal_fstat(fd_t fd
, void *buf
) {
196 return fstat(fd
, (struct stat
*)buf
);
199 uptr
internal_filesize(fd_t fd
) {
201 if (internal_fstat(fd
, &st
))
203 return (uptr
)st
.st_size
;
206 uptr
internal_dup(int oldfd
) {
210 uptr
internal_dup2(int oldfd
, int newfd
) {
211 return dup2(oldfd
, newfd
);
214 uptr
internal_readlink(const char *path
, char *buf
, uptr bufsize
) {
215 return readlink(path
, buf
, bufsize
);
218 uptr
internal_unlink(const char *path
) {
222 uptr
internal_sched_yield() {
223 return sched_yield();
226 void internal__exit(int exitcode
) {
230 void internal_usleep(u64 useconds
) { usleep(useconds
); }
232 uptr
internal_getpid() {
236 int internal_dlinfo(void *handle
, int request
, void *p
) {
240 int internal_sigaction(int signum
, const void *act
, void *oldact
) {
241 return sigaction(signum
,
242 (const struct sigaction
*)act
, (struct sigaction
*)oldact
);
245 void internal_sigfillset(__sanitizer_sigset_t
*set
) { sigfillset(set
); }
247 uptr
internal_sigprocmask(int how
, __sanitizer_sigset_t
*set
,
248 __sanitizer_sigset_t
*oldset
) {
249 // Don't use sigprocmask here, because it affects all threads.
250 return pthread_sigmask(how
, set
, oldset
);
253 // Doesn't call pthread_atfork() handlers (but not available on 10.6).
254 extern "C" pid_t
__fork(void) SANITIZER_WEAK_ATTRIBUTE
;
256 int internal_fork() {
262 int internal_sysctl(const int *name
, unsigned int namelen
, void *oldp
,
263 uptr
*oldlenp
, const void *newp
, uptr newlen
) {
264 return sysctl(const_cast<int *>(name
), namelen
, oldp
, (size_t *)oldlenp
,
265 const_cast<void *>(newp
), (size_t)newlen
);
268 int internal_sysctlbyname(const char *sname
, void *oldp
, uptr
*oldlenp
,
269 const void *newp
, uptr newlen
) {
270 return sysctlbyname(sname
, oldp
, (size_t *)oldlenp
, const_cast<void *>(newp
),
274 static fd_t
internal_spawn_impl(const char *argv
[], const char *envp
[],
276 fd_t master_fd
= kInvalidFd
;
277 fd_t slave_fd
= kInvalidFd
;
279 auto fd_closer
= at_scope_exit([&] {
280 internal_close(master_fd
);
281 internal_close(slave_fd
);
284 // We need a new pseudoterminal to avoid buffering problems. The 'atos' tool
285 // in particular detects when it's talking to a pipe and forgets to flush the
286 // output stream after sending a response.
287 master_fd
= posix_openpt(O_RDWR
);
288 if (master_fd
== kInvalidFd
) return kInvalidFd
;
290 int res
= grantpt(master_fd
) || unlockpt(master_fd
);
291 if (res
!= 0) return kInvalidFd
;
293 // Use TIOCPTYGNAME instead of ptsname() to avoid threading problems.
294 char slave_pty_name
[128];
295 res
= ioctl(master_fd
, TIOCPTYGNAME
, slave_pty_name
);
296 if (res
== -1) return kInvalidFd
;
298 slave_fd
= internal_open(slave_pty_name
, O_RDWR
);
299 if (slave_fd
== kInvalidFd
) return kInvalidFd
;
301 // File descriptor actions
302 posix_spawn_file_actions_t acts
;
303 res
= posix_spawn_file_actions_init(&acts
);
304 if (res
!= 0) return kInvalidFd
;
306 auto acts_cleanup
= at_scope_exit([&] {
307 posix_spawn_file_actions_destroy(&acts
);
310 res
= posix_spawn_file_actions_adddup2(&acts
, slave_fd
, STDIN_FILENO
) ||
311 posix_spawn_file_actions_adddup2(&acts
, slave_fd
, STDOUT_FILENO
) ||
312 posix_spawn_file_actions_addclose(&acts
, slave_fd
);
313 if (res
!= 0) return kInvalidFd
;
316 posix_spawnattr_t attrs
;
317 res
= posix_spawnattr_init(&attrs
);
318 if (res
!= 0) return kInvalidFd
;
320 auto attrs_cleanup
= at_scope_exit([&] {
321 posix_spawnattr_destroy(&attrs
);
324 // In the spawned process, close all file descriptors that are not explicitly
325 // described by the file actions object. This is Darwin-specific extension.
326 res
= posix_spawnattr_setflags(&attrs
, POSIX_SPAWN_CLOEXEC_DEFAULT
);
327 if (res
!= 0) return kInvalidFd
;
330 char **argv_casted
= const_cast<char **>(argv
);
331 char **envp_casted
= const_cast<char **>(envp
);
332 res
= posix_spawn(pid
, argv
[0], &acts
, &attrs
, argv_casted
, envp_casted
);
333 if (res
!= 0) return kInvalidFd
;
335 // Disable echo in the new terminal, disable CR.
336 struct termios termflags
;
337 tcgetattr(master_fd
, &termflags
);
338 termflags
.c_oflag
&= ~ONLCR
;
339 termflags
.c_lflag
&= ~ECHO
;
340 tcsetattr(master_fd
, TCSANOW
, &termflags
);
342 // On success, do not close master_fd on scope exit.
344 master_fd
= kInvalidFd
;
349 fd_t
internal_spawn(const char *argv
[], const char *envp
[], pid_t
*pid
) {
350 // The client program may close its stdin and/or stdout and/or stderr thus
351 // allowing open/posix_openpt to reuse file descriptors 0, 1 or 2. In this
352 // case the communication is broken if either the parent or the child tries to
353 // close or duplicate these descriptors. We temporarily reserve these
354 // descriptors here to prevent this.
358 for (; count
< 3; count
++) {
359 low_fds
[count
] = posix_openpt(O_RDWR
);
360 if (low_fds
[count
] >= STDERR_FILENO
)
364 fd_t fd
= internal_spawn_impl(argv
, envp
, pid
);
366 for (; count
> 0; count
--) {
367 internal_close(low_fds
[count
]);
373 uptr
internal_rename(const char *oldpath
, const char *newpath
) {
374 return rename(oldpath
, newpath
);
377 uptr
internal_ftruncate(fd_t fd
, uptr size
) {
378 return ftruncate(fd
, size
);
381 uptr
internal_execve(const char *filename
, char *const argv
[],
382 char *const envp
[]) {
383 return execve(filename
, argv
, envp
);
386 uptr
internal_waitpid(int pid
, int *status
, int options
) {
387 return waitpid(pid
, status
, options
);
390 // ----------------- sanitizer_common.h
391 bool FileExists(const char *filename
) {
392 if (ShouldMockFailureToOpen(filename
))
395 if (stat(filename
, &st
))
397 // Sanity check: filename is a regular file.
398 return S_ISREG(st
.st_mode
);
403 pthread_threadid_np(nullptr, &tid
);
407 void GetThreadStackTopAndBottom(bool at_initialization
, uptr
*stack_top
,
408 uptr
*stack_bottom
) {
411 uptr stacksize
= pthread_get_stacksize_np(pthread_self());
412 // pthread_get_stacksize_np() returns an incorrect stack size for the main
413 // thread on Mavericks. See
414 // https://github.com/google/sanitizers/issues/261
415 if ((GetMacosAlignedVersion() >= MacosVersion(10, 9)) && at_initialization
&&
416 stacksize
== (1 << 19)) {
418 CHECK_EQ(getrlimit(RLIMIT_STACK
, &rl
), 0);
419 // Most often rl.rlim_cur will be the desired 8M.
420 if (rl
.rlim_cur
< kMaxThreadStackSize
) {
421 stacksize
= rl
.rlim_cur
;
423 stacksize
= kMaxThreadStackSize
;
426 void *stackaddr
= pthread_get_stackaddr_np(pthread_self());
427 *stack_top
= (uptr
)stackaddr
;
428 *stack_bottom
= *stack_top
- stacksize
;
431 char **GetEnviron() {
433 char ***env_ptr
= _NSGetEnviron();
435 Report("_NSGetEnviron() returned NULL. Please make sure __asan_init() is "
436 "called after libSystem_initializer().\n");
439 char **environ
= *env_ptr
;
445 const char *GetEnv(const char *name
) {
446 char **env
= GetEnviron();
447 uptr name_len
= internal_strlen(name
);
449 uptr len
= internal_strlen(*env
);
450 if (len
> name_len
) {
451 const char *p
= *env
;
452 if (!internal_memcmp(p
, name
, name_len
) &&
453 p
[name_len
] == '=') { // Match.
454 return *env
+ name_len
+ 1; // String starting after =.
462 uptr
ReadBinaryName(/*out*/char *buf
, uptr buf_len
) {
463 CHECK_LE(kMaxPathLength
, buf_len
);
465 // On OS X the executable path is saved to the stack by dyld. Reading it
466 // from there is much faster than calling dladdr, especially for large
467 // binaries with symbols.
468 InternalMmapVector
<char> exe_path(kMaxPathLength
);
469 uint32_t size
= exe_path
.size();
470 if (_NSGetExecutablePath(exe_path
.data(), &size
) == 0 &&
471 realpath(exe_path
.data(), buf
) != 0) {
472 return internal_strlen(buf
);
477 uptr
ReadLongProcessName(/*out*/char *buf
, uptr buf_len
) {
478 return ReadBinaryName(buf
, buf_len
);
489 void CheckMPROTECT() {
494 return sysconf(_SC_PAGESIZE
);
497 extern "C" unsigned malloc_num_zones
;
498 extern "C" malloc_zone_t
**malloc_zones
;
499 malloc_zone_t sanitizer_zone
;
501 // We need to make sure that sanitizer_zone is registered as malloc_zones[0]. If
502 // libmalloc tries to set up a different zone as malloc_zones[0], it will call
503 // mprotect(malloc_zones, ..., PROT_READ). This interceptor will catch that and
504 // make sure we are still the first (default) zone.
505 void MprotectMallocZones(void *addr
, int prot
) {
506 if (addr
== malloc_zones
&& prot
== PROT_READ
) {
507 if (malloc_num_zones
> 1 && malloc_zones
[0] != &sanitizer_zone
) {
508 for (unsigned i
= 1; i
< malloc_num_zones
; i
++) {
509 if (malloc_zones
[i
] == &sanitizer_zone
) {
510 // Swap malloc_zones[0] and malloc_zones[i].
511 malloc_zones
[i
] = malloc_zones
[0];
512 malloc_zones
[0] = &sanitizer_zone
;
520 void FutexWait(atomic_uint32_t
*p
, u32 cmp
) {
521 // FIXME: implement actual blocking.
525 void FutexWake(atomic_uint32_t
*p
, u32 count
) {}
529 internal_memset(&tv
, 0, sizeof(tv
));
530 gettimeofday(&tv
, 0);
531 return (u64
)tv
.tv_sec
* 1000*1000*1000 + tv
.tv_usec
* 1000;
534 // This needs to be called during initialization to avoid being racy.
535 u64
MonotonicNanoTime() {
536 static mach_timebase_info_data_t timebase_info
;
537 if (timebase_info
.denom
== 0) mach_timebase_info(&timebase_info
);
538 return (mach_absolute_time() * timebase_info
.numer
) / timebase_info
.denom
;
550 #if defined(__x86_64__)
551 asm("movq %%gs:0,%0" : "=r"(segbase
));
552 #elif defined(__i386__)
553 asm("movl %%gs:0,%0" : "=r"(segbase
));
558 // The size of the tls on darwin does not appear to be well documented,
559 // however the vm memory map suggests that it is 1024 uptrs in size,
560 // with a size of 0x2000 bytes on x86_64 and 0x1000 bytes on i386.
562 #if defined(__x86_64__) || defined(__i386__)
563 return 1024 * sizeof(uptr
);
569 void GetThreadStackAndTls(bool main
, uptr
*stk_addr
, uptr
*stk_size
,
570 uptr
*tls_addr
, uptr
*tls_size
) {
572 uptr stack_top
, stack_bottom
;
573 GetThreadStackTopAndBottom(main
, &stack_top
, &stack_bottom
);
574 *stk_addr
= stack_bottom
;
575 *stk_size
= stack_top
- stack_bottom
;
576 *tls_addr
= TlsBaseAddr();
577 *tls_size
= TlsSize();
586 void ListOfModules::init() {
588 MemoryMappingLayout
memory_mapping(false);
589 memory_mapping
.DumpListOfModules(&modules_
);
592 void ListOfModules::fallbackInit() { clear(); }
594 static HandleSignalMode
GetHandleSignalModeImpl(int signum
) {
597 return common_flags()->handle_abort
;
599 return common_flags()->handle_sigill
;
601 return common_flags()->handle_sigtrap
;
603 return common_flags()->handle_sigfpe
;
605 return common_flags()->handle_segv
;
607 return common_flags()->handle_sigbus
;
609 return kHandleSignalNo
;
612 HandleSignalMode
GetHandleSignalMode(int signum
) {
613 // Handling fatal signals on watchOS and tvOS devices is disallowed.
614 if ((SANITIZER_WATCHOS
|| SANITIZER_TVOS
) && !(SANITIZER_IOSSIM
))
615 return kHandleSignalNo
;
616 HandleSignalMode result
= GetHandleSignalModeImpl(signum
);
617 if (result
== kHandleSignalYes
&& !common_flags()->allow_user_segv_handler
)
618 return kHandleSignalExclusive
;
623 // XNU 17 -- macOS 10.13 -- iOS 11 -- tvOS 11 -- watchOS 4
624 constexpr u16
GetOSMajorKernelOffset() {
625 if (TARGET_OS_OSX
) return 4;
626 if (TARGET_OS_IOS
|| TARGET_OS_TV
) return 6;
627 if (TARGET_OS_WATCH
) return 13;
630 using VersStr
= char[64];
632 static uptr
ApproximateOSVersionViaKernelVersion(VersStr vers
) {
633 u16 kernel_major
= GetDarwinKernelVersion().major
;
634 u16 offset
= GetOSMajorKernelOffset();
635 CHECK_GE(kernel_major
, offset
);
636 u16 os_major
= kernel_major
- offset
;
638 const char *format
= "%d.0";
640 if (os_major
>= 16) { // macOS 11+
642 } else { // macOS 10.15 and below
646 return internal_snprintf(vers
, sizeof(VersStr
), format
, os_major
);
649 static void GetOSVersion(VersStr vers
) {
650 uptr len
= sizeof(VersStr
);
651 if (SANITIZER_IOSSIM
) {
652 const char *vers_env
= GetEnv("SIMULATOR_RUNTIME_VERSION");
654 Report("ERROR: Running in simulator but SIMULATOR_RUNTIME_VERSION env "
655 "var is not set.\n");
658 len
= internal_strlcpy(vers
, vers_env
, len
);
661 internal_sysctlbyname("kern.osproductversion", vers
, &len
, nullptr, 0);
663 // XNU 17 (macOS 10.13) and below do not provide the sysctl
664 // `kern.osproductversion` entry (res != 0).
665 bool no_os_version
= res
!= 0;
667 // For launchd, sanitizer initialization runs before sysctl is setup
668 // (res == 0 && len != strlen(vers), vers is not a valid version). However,
669 // the kernel version `kern.osrelease` is available.
670 bool launchd
= (res
== 0 && internal_strlen(vers
) < 3);
671 if (launchd
) CHECK_EQ(internal_getpid(), 1);
673 if (no_os_version
|| launchd
) {
674 len
= ApproximateOSVersionViaKernelVersion(vers
);
677 CHECK_LT(len
, sizeof(VersStr
));
680 void ParseVersion(const char *vers
, u16
*major
, u16
*minor
) {
681 // Format: <major>.<minor>[.<patch>]\0
682 CHECK_GE(internal_strlen(vers
), 3);
683 const char *p
= vers
;
684 *major
= internal_simple_strtoll(p
, &p
, /*base=*/10);
687 *minor
= internal_simple_strtoll(p
, &p
, /*base=*/10);
690 // Aligned versions example:
691 // macOS 10.15 -- iOS 13 -- tvOS 13 -- watchOS 6
692 static void MapToMacos(u16
*major
, u16
*minor
) {
696 if (TARGET_OS_IOS
|| TARGET_OS_TV
)
698 else if (TARGET_OS_WATCH
)
701 UNREACHABLE("unsupported platform");
703 if (*major
>= 16) { // macOS 11+
705 } else { // macOS 10.15 and below
711 static MacosVersion
GetMacosAlignedVersionInternal() {
716 ParseVersion(vers
, &major
, &minor
);
717 MapToMacos(&major
, &minor
);
719 return MacosVersion(major
, minor
);
722 static_assert(sizeof(MacosVersion
) == sizeof(atomic_uint32_t::Type
),
723 "MacosVersion cache size");
724 static atomic_uint32_t cached_macos_version
;
726 MacosVersion
GetMacosAlignedVersion() {
727 atomic_uint32_t::Type result
=
728 atomic_load(&cached_macos_version
, memory_order_acquire
);
730 MacosVersion version
= GetMacosAlignedVersionInternal();
731 result
= *reinterpret_cast<atomic_uint32_t::Type
*>(&version
);
732 atomic_store(&cached_macos_version
, result
, memory_order_release
);
734 return *reinterpret_cast<MacosVersion
*>(&result
);
737 DarwinKernelVersion
GetDarwinKernelVersion() {
739 uptr len
= sizeof(VersStr
);
740 int res
= internal_sysctlbyname("kern.osrelease", vers
, &len
, nullptr, 0);
742 CHECK_LT(len
, sizeof(VersStr
));
745 ParseVersion(vers
, &major
, &minor
);
747 return DarwinKernelVersion(major
, minor
);
751 struct task_basic_info info
;
752 unsigned count
= TASK_BASIC_INFO_COUNT
;
753 kern_return_t result
=
754 task_info(mach_task_self(), TASK_BASIC_INFO
, (task_info_t
)&info
, &count
);
755 if (UNLIKELY(result
!= KERN_SUCCESS
)) {
756 Report("Cannot get task info. Error: %d\n", result
);
759 return info
.resident_size
;
762 void *internal_start_thread(void *(*func
)(void *arg
), void *arg
) {
763 // Start the thread with signals blocked, otherwise it can steal user signals.
764 __sanitizer_sigset_t set
, old
;
765 internal_sigfillset(&set
);
766 internal_sigprocmask(SIG_SETMASK
, &set
, &old
);
768 pthread_create(&th
, 0, func
, arg
);
769 internal_sigprocmask(SIG_SETMASK
, &old
, 0);
773 void internal_join_thread(void *th
) { pthread_join((pthread_t
)th
, 0); }
776 static Mutex syslog_lock
;
779 void WriteOneLineToSyslog(const char *s
) {
781 syslog_lock
.CheckLocked();
782 if (GetMacosAlignedVersion() >= MacosVersion(10, 12)) {
783 os_log_error(OS_LOG_DEFAULT
, "%{public}s", s
);
785 asl_log(nullptr, nullptr, ASL_LEVEL_ERR
, "%s", s
);
790 // buffer to store crash report application information
791 static char crashreporter_info_buff
[__sanitizer::kErrorMessageBufferSize
] = {};
792 static Mutex crashreporter_info_mutex
;
795 // Integrate with crash reporter libraries.
796 #if HAVE_CRASHREPORTERCLIENT_H
797 CRASH_REPORTER_CLIENT_HIDDEN
798 struct crashreporter_annotations_t gCRAnnotations
799 __attribute__((section("__DATA," CRASHREPORTER_ANNOTATIONS_SECTION
))) = {
800 CRASHREPORTER_ANNOTATIONS_VERSION
,
807 #if CRASHREPORTER_ANNOTATIONS_VERSION > 4
813 // fall back to old crashreporter api
814 static const char *__crashreporter_info__
__attribute__((__used__
)) =
815 &crashreporter_info_buff
[0];
816 asm(".desc ___crashreporter_info__, 0x10");
821 static void CRAppendCrashLogMessage(const char *msg
) {
822 Lock
l(&crashreporter_info_mutex
);
823 internal_strlcat(crashreporter_info_buff
, msg
,
824 sizeof(crashreporter_info_buff
));
825 #if HAVE_CRASHREPORTERCLIENT_H
826 (void)CRSetCrashLogMessage(crashreporter_info_buff
);
830 void LogMessageOnPrintf(const char *str
) {
831 // Log all printf output to CrashLog.
832 if (common_flags()->abort_on_error
)
833 CRAppendCrashLogMessage(str
);
836 void LogFullErrorReport(const char *buffer
) {
838 // Log with os_trace. This will make it into the crash log.
839 #if SANITIZER_OS_TRACE
840 if (GetMacosAlignedVersion() >= MacosVersion(10, 10)) {
841 // os_trace requires the message (format parameter) to be a string literal.
842 if (internal_strncmp(SanitizerToolName
, "AddressSanitizer",
843 sizeof("AddressSanitizer") - 1) == 0)
844 os_trace("Address Sanitizer reported a failure.");
845 else if (internal_strncmp(SanitizerToolName
, "UndefinedBehaviorSanitizer",
846 sizeof("UndefinedBehaviorSanitizer") - 1) == 0)
847 os_trace("Undefined Behavior Sanitizer reported a failure.");
848 else if (internal_strncmp(SanitizerToolName
, "ThreadSanitizer",
849 sizeof("ThreadSanitizer") - 1) == 0)
850 os_trace("Thread Sanitizer reported a failure.");
852 os_trace("Sanitizer tool reported a failure.");
854 if (common_flags()->log_to_syslog
)
855 os_trace("Consult syslog for more information.");
860 // The logging on OS X may call pthread_create so we need the threading
861 // environment to be fully initialized. Also, this should never be called when
862 // holding the thread registry lock since that may result in a deadlock. If
863 // the reporting thread holds the thread registry mutex, and asl_log waits
864 // for GCD to dispatch a new thread, the process will deadlock, because the
865 // pthread_create wrapper needs to acquire the lock as well.
866 Lock
l(&syslog_lock
);
867 if (common_flags()->log_to_syslog
)
868 WriteToSyslog(buffer
);
870 // The report is added to CrashLog as part of logging all of Printf output.
874 SignalContext::WriteFlag
SignalContext::GetWriteFlag() const {
875 #if defined(__x86_64__) || defined(__i386__)
876 ucontext_t
*ucontext
= static_cast<ucontext_t
*>(context
);
877 return ucontext
->uc_mcontext
->__es
.__err
& 2 /*T_PF_WRITE*/ ? WRITE
: READ
;
883 bool SignalContext::IsTrueFaultingAddress() const {
884 auto si
= static_cast<const siginfo_t
*>(siginfo
);
885 // "Real" SIGSEGV codes (e.g., SEGV_MAPERR, SEGV_MAPERR) are non-zero.
886 return si
->si_signo
== SIGSEGV
&& si
->si_code
!= 0;
889 #if defined(__aarch64__) && defined(arm_thread_state64_get_sp)
890 #define AARCH64_GET_REG(r) \
891 (uptr)ptrauth_strip( \
892 (void *)arm_thread_state64_get_##r(ucontext->uc_mcontext->__ss), 0)
894 #define AARCH64_GET_REG(r) ucontext->uc_mcontext->__ss.__##r
897 static void GetPcSpBp(void *context
, uptr
*pc
, uptr
*sp
, uptr
*bp
) {
898 ucontext_t
*ucontext
= (ucontext_t
*)context
;
899 # if defined(__aarch64__)
900 *pc
= AARCH64_GET_REG(pc
);
901 # if defined(__IPHONE_8_0) && __IPHONE_OS_VERSION_MAX_ALLOWED >= __IPHONE_8_0
902 *bp
= AARCH64_GET_REG(fp
);
904 *bp
= AARCH64_GET_REG(lr
);
906 *sp
= AARCH64_GET_REG(sp
);
907 # elif defined(__x86_64__)
908 *pc
= ucontext
->uc_mcontext
->__ss
.__rip
;
909 *bp
= ucontext
->uc_mcontext
->__ss
.__rbp
;
910 *sp
= ucontext
->uc_mcontext
->__ss
.__rsp
;
911 # elif defined(__arm__)
912 *pc
= ucontext
->uc_mcontext
->__ss
.__pc
;
913 *bp
= ucontext
->uc_mcontext
->__ss
.__r
[7];
914 *sp
= ucontext
->uc_mcontext
->__ss
.__sp
;
915 # elif defined(__i386__)
916 *pc
= ucontext
->uc_mcontext
->__ss
.__eip
;
917 *bp
= ucontext
->uc_mcontext
->__ss
.__ebp
;
918 *sp
= ucontext
->uc_mcontext
->__ss
.__esp
;
920 # error "Unknown architecture"
924 void SignalContext::InitPcSpBp() {
925 addr
= (uptr
)ptrauth_strip((void *)addr
, 0);
926 GetPcSpBp(context
, &pc
, &sp
, &bp
);
929 // ASan/TSan use mmap in a way that creates “deallocation gaps” which triggers
930 // EXC_GUARD exceptions on macOS 10.15+ (XNU 19.0+).
931 static void DisableMmapExcGuardExceptions() {
932 using task_exc_guard_behavior_t
= uint32_t;
933 using task_set_exc_guard_behavior_t
=
934 kern_return_t(task_t task
, task_exc_guard_behavior_t behavior
);
935 auto *set_behavior
= (task_set_exc_guard_behavior_t
*)dlsym(
936 RTLD_DEFAULT
, "task_set_exc_guard_behavior");
937 if (set_behavior
== nullptr) return;
938 const task_exc_guard_behavior_t task_exc_guard_none
= 0;
939 set_behavior(mach_task_self(), task_exc_guard_none
);
942 void InitializePlatformEarly() {
943 // Only use xnu_fast_mmap when on x86_64 and the kernel supports it.
945 #if defined(__x86_64__)
946 GetDarwinKernelVersion() >= DarwinKernelVersion(17, 5);
950 if (GetDarwinKernelVersion() >= DarwinKernelVersion(19, 0))
951 DisableMmapExcGuardExceptions();
955 static const char kDyldInsertLibraries
[] = "DYLD_INSERT_LIBRARIES";
956 LowLevelAllocator allocator_for_env
;
958 // Change the value of the env var |name|, leaking the original value.
959 // If |name_value| is NULL, the variable is deleted from the environment,
960 // otherwise the corresponding "NAME=value" string is replaced with
962 void LeakyResetEnv(const char *name
, const char *name_value
) {
963 char **env
= GetEnviron();
964 uptr name_len
= internal_strlen(name
);
966 uptr len
= internal_strlen(*env
);
967 if (len
> name_len
) {
968 const char *p
= *env
;
969 if (!internal_memcmp(p
, name
, name_len
) && p
[name_len
] == '=') {
972 // Replace the old value with the new one.
973 *env
= const_cast<char*>(name_value
);
975 // Shift the subsequent pointers back.
987 SANITIZER_WEAK_CXX_DEFAULT_IMPL
988 bool ReexecDisabled() {
992 static bool DyldNeedsEnvVariable() {
993 // If running on OS X 10.11+ or iOS 9.0+, dyld will interpose even if
994 // DYLD_INSERT_LIBRARIES is not set.
995 return GetMacosAlignedVersion() < MacosVersion(10, 11);
999 // FIXME: This should really live in some "InitializePlatform" method.
1000 MonotonicNanoTime();
1002 if (ReexecDisabled()) return;
1004 // Make sure the dynamic runtime library is preloaded so that the
1005 // wrappers work. If it is not, set DYLD_INSERT_LIBRARIES and re-exec
1008 RAW_CHECK(dladdr((void*)((uptr
)&__sanitizer_report_error_summary
), &info
));
1009 char *dyld_insert_libraries
=
1010 const_cast<char*>(GetEnv(kDyldInsertLibraries
));
1011 uptr old_env_len
= dyld_insert_libraries
?
1012 internal_strlen(dyld_insert_libraries
) : 0;
1013 uptr fname_len
= internal_strlen(info
.dli_fname
);
1014 const char *dylib_name
= StripModuleName(info
.dli_fname
);
1015 uptr dylib_name_len
= internal_strlen(dylib_name
);
1017 bool lib_is_in_env
= dyld_insert_libraries
&&
1018 internal_strstr(dyld_insert_libraries
, dylib_name
);
1019 if (DyldNeedsEnvVariable() && !lib_is_in_env
) {
1020 // DYLD_INSERT_LIBRARIES is not set or does not contain the runtime
1022 InternalMmapVector
<char> program_name(1024);
1023 uint32_t buf_size
= program_name
.size();
1024 _NSGetExecutablePath(program_name
.data(), &buf_size
);
1025 char *new_env
= const_cast<char*>(info
.dli_fname
);
1026 if (dyld_insert_libraries
) {
1027 // Append the runtime dylib name to the existing value of
1028 // DYLD_INSERT_LIBRARIES.
1029 new_env
= (char*)allocator_for_env
.Allocate(old_env_len
+ fname_len
+ 2);
1030 internal_strncpy(new_env
, dyld_insert_libraries
, old_env_len
);
1031 new_env
[old_env_len
] = ':';
1032 // Copy fname_len and add a trailing zero.
1033 internal_strncpy(new_env
+ old_env_len
+ 1, info
.dli_fname
,
1035 // Ok to use setenv() since the wrappers don't depend on the value of
1037 setenv(kDyldInsertLibraries
, new_env
, /*overwrite*/1);
1039 // Set DYLD_INSERT_LIBRARIES equal to the runtime dylib name.
1040 setenv(kDyldInsertLibraries
, info
.dli_fname
, /*overwrite*/0);
1042 VReport(1, "exec()-ing the program with\n");
1043 VReport(1, "%s=%s\n", kDyldInsertLibraries
, new_env
);
1044 VReport(1, "to enable wrappers.\n");
1045 execv(program_name
.data(), *_NSGetArgv());
1047 // We get here only if execv() failed.
1048 Report("ERROR: The process is launched without DYLD_INSERT_LIBRARIES, "
1049 "which is required for the sanitizer to work. We tried to set the "
1050 "environment variable and re-execute itself, but execv() failed, "
1051 "possibly because of sandbox restrictions. Make sure to launch the "
1052 "executable with:\n%s=%s\n", kDyldInsertLibraries
, new_env
);
1053 RAW_CHECK("execv failed" && 0);
1056 // Verify that interceptors really work. We'll use dlsym to locate
1057 // "pthread_create", if interceptors are working, it should really point to
1058 // "wrap_pthread_create" within our own dylib.
1059 Dl_info info_pthread_create
;
1060 void *dlopen_addr
= dlsym(RTLD_DEFAULT
, "pthread_create");
1061 RAW_CHECK(dladdr(dlopen_addr
, &info_pthread_create
));
1062 if (internal_strcmp(info
.dli_fname
, info_pthread_create
.dli_fname
) != 0) {
1064 "ERROR: Interceptors are not working. This may be because %s is "
1065 "loaded too late (e.g. via dlopen). Please launch the executable "
1067 SanitizerToolName
, kDyldInsertLibraries
, info
.dli_fname
);
1068 RAW_CHECK("interceptors not installed" && 0);
1074 if (!common_flags()->strip_env
)
1077 // DYLD_INSERT_LIBRARIES is set and contains the runtime library. Let's remove
1078 // the dylib from the environment variable, because interceptors are installed
1079 // and we don't want our children to inherit the variable.
1081 uptr env_name_len
= internal_strlen(kDyldInsertLibraries
);
1082 // Allocate memory to hold the previous env var name, its value, the '='
1083 // sign and the '\0' char.
1084 char *new_env
= (char*)allocator_for_env
.Allocate(
1085 old_env_len
+ 2 + env_name_len
);
1087 internal_memset(new_env
, '\0', old_env_len
+ 2 + env_name_len
);
1088 internal_strncpy(new_env
, kDyldInsertLibraries
, env_name_len
);
1089 new_env
[env_name_len
] = '=';
1090 char *new_env_pos
= new_env
+ env_name_len
+ 1;
1092 // Iterate over colon-separated pieces of |dyld_insert_libraries|.
1093 char *piece_start
= dyld_insert_libraries
;
1094 char *piece_end
= NULL
;
1095 char *old_env_end
= dyld_insert_libraries
+ old_env_len
;
1097 if (piece_start
[0] == ':') piece_start
++;
1098 piece_end
= internal_strchr(piece_start
, ':');
1099 if (!piece_end
) piece_end
= dyld_insert_libraries
+ old_env_len
;
1100 if ((uptr
)(piece_start
- dyld_insert_libraries
) > old_env_len
) break;
1101 uptr piece_len
= piece_end
- piece_start
;
1103 char *filename_start
=
1104 (char *)internal_memrchr(piece_start
, '/', piece_len
);
1105 uptr filename_len
= piece_len
;
1106 if (filename_start
) {
1107 filename_start
+= 1;
1108 filename_len
= piece_len
- (filename_start
- piece_start
);
1110 filename_start
= piece_start
;
1113 // If the current piece isn't the runtime library name,
1114 // append it to new_env.
1115 if ((dylib_name_len
!= filename_len
) ||
1116 (internal_memcmp(filename_start
, dylib_name
, dylib_name_len
) != 0)) {
1117 if (new_env_pos
!= new_env
+ env_name_len
+ 1) {
1118 new_env_pos
[0] = ':';
1121 internal_strncpy(new_env_pos
, piece_start
, piece_len
);
1122 new_env_pos
+= piece_len
;
1124 // Move on to the next piece.
1125 piece_start
= piece_end
;
1126 } while (piece_start
< old_env_end
);
1128 // Can't use setenv() here, because it requires the allocator to be
1130 // FIXME: instead of filtering DYLD_INSERT_LIBRARIES here, do it in
1131 // a separate function called after InitializeAllocator().
1132 if (new_env_pos
== new_env
+ env_name_len
+ 1) new_env
= NULL
;
1133 LeakyResetEnv(kDyldInsertLibraries
, new_env
);
1135 #endif // SANITIZER_GO
1138 return *_NSGetArgv();
1141 #if SANITIZER_IOS && !SANITIZER_IOSSIM
1142 // The task_vm_info struct is normally provided by the macOS SDK, but we need
1143 // fields only available in 10.12+. Declare the struct manually to be able to
1144 // build against older SDKs.
1145 struct __sanitizer_task_vm_info
{
1146 mach_vm_size_t virtual_size
;
1147 integer_t region_count
;
1148 integer_t page_size
;
1149 mach_vm_size_t resident_size
;
1150 mach_vm_size_t resident_size_peak
;
1151 mach_vm_size_t device
;
1152 mach_vm_size_t device_peak
;
1153 mach_vm_size_t internal
;
1154 mach_vm_size_t internal_peak
;
1155 mach_vm_size_t external
;
1156 mach_vm_size_t external_peak
;
1157 mach_vm_size_t reusable
;
1158 mach_vm_size_t reusable_peak
;
1159 mach_vm_size_t purgeable_volatile_pmap
;
1160 mach_vm_size_t purgeable_volatile_resident
;
1161 mach_vm_size_t purgeable_volatile_virtual
;
1162 mach_vm_size_t compressed
;
1163 mach_vm_size_t compressed_peak
;
1164 mach_vm_size_t compressed_lifetime
;
1165 mach_vm_size_t phys_footprint
;
1166 mach_vm_address_t min_address
;
1167 mach_vm_address_t max_address
;
1169 #define __SANITIZER_TASK_VM_INFO_COUNT ((mach_msg_type_number_t) \
1170 (sizeof(__sanitizer_task_vm_info) / sizeof(natural_t)))
1172 static uptr
GetTaskInfoMaxAddress() {
1173 __sanitizer_task_vm_info vm_info
= {} /* zero initialize */;
1174 mach_msg_type_number_t count
= __SANITIZER_TASK_VM_INFO_COUNT
;
1175 int err
= task_info(mach_task_self(), TASK_VM_INFO
, (int *)&vm_info
, &count
);
1176 return err
? 0 : vm_info
.max_address
;
1179 uptr
GetMaxUserVirtualAddress() {
1180 static uptr max_vm
= GetTaskInfoMaxAddress();
1182 const uptr ret_value
= max_vm
- 1;
1183 CHECK_LE(ret_value
, SANITIZER_MMAP_RANGE_SIZE
);
1187 // xnu cannot provide vm address limit
1188 # if SANITIZER_WORDSIZE == 32
1189 constexpr uptr fallback_max_vm
= 0xffe00000 - 1;
1191 constexpr uptr fallback_max_vm
= 0x200000000 - 1;
1193 static_assert(fallback_max_vm
<= SANITIZER_MMAP_RANGE_SIZE
,
1194 "Max virtual address must be less than mmap range size.");
1195 return fallback_max_vm
;
1198 #else // !SANITIZER_IOS
1200 uptr
GetMaxUserVirtualAddress() {
1201 # if SANITIZER_WORDSIZE == 64
1202 constexpr uptr max_vm
= (1ULL << 47) - 1; // 0x00007fffffffffffUL;
1203 # else // SANITIZER_WORDSIZE == 32
1204 static_assert(SANITIZER_WORDSIZE
== 32, "Wrong wordsize");
1205 constexpr uptr max_vm
= (1ULL << 32) - 1; // 0xffffffff;
1207 static_assert(max_vm
<= SANITIZER_MMAP_RANGE_SIZE
,
1208 "Max virtual address must be less than mmap range size.");
1213 uptr
GetMaxVirtualAddress() {
1214 return GetMaxUserVirtualAddress();
1217 uptr
MapDynamicShadow(uptr shadow_size_bytes
, uptr shadow_scale
,
1218 uptr min_shadow_base_alignment
, uptr
&high_mem_end
) {
1219 const uptr granularity
= GetMmapGranularity();
1220 const uptr alignment
=
1221 Max
<uptr
>(granularity
<< shadow_scale
, 1ULL << min_shadow_base_alignment
);
1222 const uptr left_padding
=
1223 Max
<uptr
>(granularity
, 1ULL << min_shadow_base_alignment
);
1225 uptr space_size
= shadow_size_bytes
+ left_padding
;
1227 uptr largest_gap_found
= 0;
1228 uptr max_occupied_addr
= 0;
1229 VReport(2, "FindDynamicShadowStart, space_size = %p\n", space_size
);
1231 FindAvailableMemoryRange(space_size
, alignment
, granularity
,
1232 &largest_gap_found
, &max_occupied_addr
);
1233 // If the shadow doesn't fit, restrict the address space to make it fit.
1234 if (shadow_start
== 0) {
1237 "Shadow doesn't fit, largest_gap_found = %p, max_occupied_addr = %p\n",
1238 largest_gap_found
, max_occupied_addr
);
1239 uptr new_max_vm
= RoundDownTo(largest_gap_found
<< shadow_scale
, alignment
);
1240 if (new_max_vm
< max_occupied_addr
) {
1241 Report("Unable to find a memory range for dynamic shadow.\n");
1243 "space_size = %p, largest_gap_found = %p, max_occupied_addr = %p, "
1244 "new_max_vm = %p\n",
1245 space_size
, largest_gap_found
, max_occupied_addr
, new_max_vm
);
1246 CHECK(0 && "cannot place shadow");
1248 RestrictMemoryToMaxAddress(new_max_vm
);
1249 high_mem_end
= new_max_vm
- 1;
1250 space_size
= (high_mem_end
>> shadow_scale
) + left_padding
;
1251 VReport(2, "FindDynamicShadowStart, space_size = %p\n", space_size
);
1252 shadow_start
= FindAvailableMemoryRange(space_size
, alignment
, granularity
,
1254 if (shadow_start
== 0) {
1255 Report("Unable to find a memory range after restricting VM.\n");
1256 CHECK(0 && "cannot place shadow after restricting vm");
1259 CHECK_NE((uptr
)0, shadow_start
);
1260 CHECK(IsAligned(shadow_start
, alignment
));
1261 return shadow_start
;
1264 uptr
MapDynamicShadowAndAliases(uptr shadow_size
, uptr alias_size
,
1265 uptr num_aliases
, uptr ring_buffer_size
) {
1266 CHECK(false && "HWASan aliasing is unimplemented on Mac");
1270 uptr
FindAvailableMemoryRange(uptr size
, uptr alignment
, uptr left_padding
,
1271 uptr
*largest_gap_found
,
1272 uptr
*max_occupied_addr
) {
1273 typedef vm_region_submap_short_info_data_64_t RegionInfo
;
1274 enum { kRegionInfoSize
= VM_REGION_SUBMAP_SHORT_INFO_COUNT_64
};
1275 // Start searching for available memory region past PAGEZERO, which is
1276 // 4KB on 32-bit and 4GB on 64-bit.
1277 mach_vm_address_t start_address
=
1278 (SANITIZER_WORDSIZE
== 32) ? 0x000000001000 : 0x000100000000;
1280 mach_vm_address_t address
= start_address
;
1281 mach_vm_address_t free_begin
= start_address
;
1282 kern_return_t kr
= KERN_SUCCESS
;
1283 if (largest_gap_found
) *largest_gap_found
= 0;
1284 if (max_occupied_addr
) *max_occupied_addr
= 0;
1285 while (kr
== KERN_SUCCESS
) {
1286 mach_vm_size_t vmsize
= 0;
1287 natural_t depth
= 0;
1289 mach_msg_type_number_t count
= kRegionInfoSize
;
1290 kr
= mach_vm_region_recurse(mach_task_self(), &address
, &vmsize
, &depth
,
1291 (vm_region_info_t
)&vminfo
, &count
);
1292 if (kr
== KERN_INVALID_ADDRESS
) {
1293 // No more regions beyond "address", consider the gap at the end of VM.
1294 address
= GetMaxVirtualAddress() + 1;
1297 if (max_occupied_addr
) *max_occupied_addr
= address
+ vmsize
;
1299 if (free_begin
!= address
) {
1300 // We found a free region [free_begin..address-1].
1301 uptr gap_start
= RoundUpTo((uptr
)free_begin
+ left_padding
, alignment
);
1302 uptr gap_end
= RoundDownTo((uptr
)address
, alignment
);
1303 uptr gap_size
= gap_end
> gap_start
? gap_end
- gap_start
: 0;
1304 if (size
< gap_size
) {
1308 if (largest_gap_found
&& *largest_gap_found
< gap_size
) {
1309 *largest_gap_found
= gap_size
;
1312 // Move to the next region.
1314 free_begin
= address
;
1317 // We looked at all free regions and could not find one large enough.
1321 // FIXME implement on this platform.
1322 void GetMemoryProfile(fill_profile_f cb
, uptr
*stats
, uptr stats_size
) { }
1324 void SignalContext::DumpAllRegisters(void *context
) {
1325 Report("Register values:\n");
1327 ucontext_t
*ucontext
= (ucontext_t
*)context
;
1328 # define DUMPREG64(r) \
1329 Printf("%s = 0x%016llx ", #r, ucontext->uc_mcontext->__ss.__ ## r);
1330 # define DUMPREGA64(r) \
1331 Printf(" %s = 0x%016llx ", #r, AARCH64_GET_REG(r));
1332 # define DUMPREG32(r) \
1333 Printf("%s = 0x%08x ", #r, ucontext->uc_mcontext->__ss.__ ## r);
1334 # define DUMPREG_(r) Printf(" "); DUMPREG(r);
1335 # define DUMPREG__(r) Printf(" "); DUMPREG(r);
1336 # define DUMPREG___(r) Printf(" "); DUMPREG(r);
1338 # if defined(__x86_64__)
1339 # define DUMPREG(r) DUMPREG64(r)
1340 DUMPREG(rax
); DUMPREG(rbx
); DUMPREG(rcx
); DUMPREG(rdx
); Printf("\n");
1341 DUMPREG(rdi
); DUMPREG(rsi
); DUMPREG(rbp
); DUMPREG(rsp
); Printf("\n");
1342 DUMPREG_(r8
); DUMPREG_(r9
); DUMPREG(r10
); DUMPREG(r11
); Printf("\n");
1343 DUMPREG(r12
); DUMPREG(r13
); DUMPREG(r14
); DUMPREG(r15
); Printf("\n");
1344 # elif defined(__i386__)
1345 # define DUMPREG(r) DUMPREG32(r)
1346 DUMPREG(eax
); DUMPREG(ebx
); DUMPREG(ecx
); DUMPREG(edx
); Printf("\n");
1347 DUMPREG(edi
); DUMPREG(esi
); DUMPREG(ebp
); DUMPREG(esp
); Printf("\n");
1348 # elif defined(__aarch64__)
1349 # define DUMPREG(r) DUMPREG64(r)
1350 DUMPREG_(x
[0]); DUMPREG_(x
[1]); DUMPREG_(x
[2]); DUMPREG_(x
[3]); Printf("\n");
1351 DUMPREG_(x
[4]); DUMPREG_(x
[5]); DUMPREG_(x
[6]); DUMPREG_(x
[7]); Printf("\n");
1352 DUMPREG_(x
[8]); DUMPREG_(x
[9]); DUMPREG(x
[10]); DUMPREG(x
[11]); Printf("\n");
1353 DUMPREG(x
[12]); DUMPREG(x
[13]); DUMPREG(x
[14]); DUMPREG(x
[15]); Printf("\n");
1354 DUMPREG(x
[16]); DUMPREG(x
[17]); DUMPREG(x
[18]); DUMPREG(x
[19]); Printf("\n");
1355 DUMPREG(x
[20]); DUMPREG(x
[21]); DUMPREG(x
[22]); DUMPREG(x
[23]); Printf("\n");
1356 DUMPREG(x
[24]); DUMPREG(x
[25]); DUMPREG(x
[26]); DUMPREG(x
[27]); Printf("\n");
1357 DUMPREG(x
[28]); DUMPREGA64(fp
); DUMPREGA64(lr
); DUMPREGA64(sp
); Printf("\n");
1358 # elif defined(__arm__)
1359 # define DUMPREG(r) DUMPREG32(r)
1360 DUMPREG_(r
[0]); DUMPREG_(r
[1]); DUMPREG_(r
[2]); DUMPREG_(r
[3]); Printf("\n");
1361 DUMPREG_(r
[4]); DUMPREG_(r
[5]); DUMPREG_(r
[6]); DUMPREG_(r
[7]); Printf("\n");
1362 DUMPREG_(r
[8]); DUMPREG_(r
[9]); DUMPREG(r
[10]); DUMPREG(r
[11]); Printf("\n");
1363 DUMPREG(r
[12]); DUMPREG___(sp
); DUMPREG___(lr
); DUMPREG___(pc
); Printf("\n");
1365 # error "Unknown architecture"
1376 static inline bool CompareBaseAddress(const LoadedModule
&a
,
1377 const LoadedModule
&b
) {
1378 return a
.base_address() < b
.base_address();
1381 void FormatUUID(char *out
, uptr size
, const u8
*uuid
) {
1382 internal_snprintf(out
, size
,
1383 "<%02X%02X%02X%02X-%02X%02X-%02X%02X-%02X%02X-"
1384 "%02X%02X%02X%02X%02X%02X>",
1385 uuid
[0], uuid
[1], uuid
[2], uuid
[3], uuid
[4], uuid
[5],
1386 uuid
[6], uuid
[7], uuid
[8], uuid
[9], uuid
[10], uuid
[11],
1387 uuid
[12], uuid
[13], uuid
[14], uuid
[15]);
1390 void DumpProcessMap() {
1391 Printf("Process module map:\n");
1392 MemoryMappingLayout
memory_mapping(false);
1393 InternalMmapVector
<LoadedModule
> modules
;
1394 modules
.reserve(128);
1395 memory_mapping
.DumpListOfModules(&modules
);
1396 Sort(modules
.data(), modules
.size(), CompareBaseAddress
);
1397 for (uptr i
= 0; i
< modules
.size(); ++i
) {
1399 FormatUUID(uuid_str
, sizeof(uuid_str
), modules
[i
].uuid());
1400 Printf("0x%zx-0x%zx %s (%s) %s\n", modules
[i
].base_address(),
1401 modules
[i
].max_executable_address(), modules
[i
].full_name(),
1402 ModuleArchToString(modules
[i
].arch()), uuid_str
);
1404 Printf("End of module map.\n");
1407 void CheckNoDeepBind(const char *filename
, int flag
) {
1411 bool GetRandom(void *buffer
, uptr length
, bool blocking
) {
1412 if (!buffer
|| !length
|| length
> 256)
1414 // arc4random never fails.
1415 REAL(arc4random_buf
)(buffer
, length
);
1419 u32
GetNumberOfCPUs() {
1420 return (u32
)sysconf(_SC_NPROCESSORS_ONLN
);
1423 void InitializePlatformCommonFlags(CommonFlags
*cf
) {}
1425 } // namespace __sanitizer
1427 #endif // SANITIZER_MAC