contrib/llvm-project/compiler-rt/lib/sanitizer_common/sanitizer_mac.h

   1 //===-- sanitizer_mac.h -----------------------------------------*- C++ -*-===//
   2 //
   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
   6 //
   7 //===----------------------------------------------------------------------===//
   8 //
   9 // This file is shared between various sanitizers' runtime libraries and
  10 // provides definitions for OSX-specific functions.
  11 //===----------------------------------------------------------------------===//
  12 #ifndef SANITIZER_MAC_H
  13 #define SANITIZER_MAC_H
  14
  15 #include "sanitizer_common.h"
  16 #include "sanitizer_platform.h"
  17 #if SANITIZER_MAC
  18 #include "sanitizer_posix.h"
  19
  20 namespace __sanitizer {
  21
  22 struct MemoryMappingLayoutData {
  23   int current_image;
  24   u32 current_magic;
  25   u32 current_filetype;
  26   ModuleArch current_arch;
  27   u8 current_uuid[kModuleUUIDSize];
  28   int current_load_cmd_count;
  29   const char *current_load_cmd_addr;
  30   bool current_instrumented;
  31 };
  32
  33 template <typename VersionType>
  34 struct VersionBase {
  35   u16 major;
  36   u16 minor;
  37
  38   VersionBase(u16 major, u16 minor) : major(major), minor(minor) {}
  39
  40   bool operator==(const VersionType &other) const {
  41     return major == other.major && minor == other.minor;
  42   }
  43   bool operator>=(const VersionType &other) const {
  44     return major > other.major ||
  45            (major == other.major && minor >= other.minor);
  46   }
  47 };
  48
  49 struct MacosVersion : VersionBase<MacosVersion> {
  50   MacosVersion(u16 major, u16 minor) : VersionBase(major, minor) {}
  51 };
  52
  53 struct DarwinKernelVersion : VersionBase<DarwinKernelVersion> {
  54   DarwinKernelVersion(u16 major, u16 minor) : VersionBase(major, minor) {}
  55 };
  56
  57 MacosVersion GetMacosAlignedVersion();
  58 DarwinKernelVersion GetDarwinKernelVersion();
  59
  60 char **GetEnviron();
  61
  62 void RestrictMemoryToMaxAddress(uptr max_address);
  63
  64 }  // namespace __sanitizer
  65
  66 extern "C" {
  67 static char __crashreporter_info_buff__[__sanitizer::kErrorMessageBufferSize] =
  68   {};
  69 static const char *__crashreporter_info__ __attribute__((__used__)) =
  70   &__crashreporter_info_buff__[0];
  71 asm(".desc ___crashreporter_info__, 0x10");
  72 } // extern "C"
  73
  74 namespace __sanitizer {
  75 static BlockingMutex crashreporter_info_mutex(LINKER_INITIALIZED);
  76
  77 INLINE void CRAppendCrashLogMessage(const char *msg) {
  78   BlockingMutexLock l(&crashreporter_info_mutex);
  79   internal_strlcat(__crashreporter_info_buff__, msg,
  80                    sizeof(__crashreporter_info_buff__)); }
  81 }  // namespace __sanitizer
  82
  83 #endif  // SANITIZER_MAC
  84 #endif  // SANITIZER_MAC_H