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   bool operator<(const VersionType &other) const { return !(*this >= other); }
48 };
49 
50 struct MacosVersion : VersionBase<MacosVersion> {
51   MacosVersion(u16 major, u16 minor) : VersionBase(major, minor) {}
52 };
53 
54 struct DarwinKernelVersion : VersionBase<DarwinKernelVersion> {
55   DarwinKernelVersion(u16 major, u16 minor) : VersionBase(major, minor) {}
56 };
57 
58 MacosVersion GetMacosAlignedVersion();
59 DarwinKernelVersion GetDarwinKernelVersion();
60 
61 char **GetEnviron();
62 
63 void RestrictMemoryToMaxAddress(uptr max_address);
64 
65 }  // namespace __sanitizer
66 
67 extern "C" {
68 static char __crashreporter_info_buff__[__sanitizer::kErrorMessageBufferSize] =
69   {};
70 static const char *__crashreporter_info__ __attribute__((__used__)) =
71   &__crashreporter_info_buff__[0];
72 asm(".desc ___crashreporter_info__, 0x10");
73 } // extern "C"
74 
75 namespace __sanitizer {
76 static BlockingMutex crashreporter_info_mutex(LINKER_INITIALIZED);
77 
78 inline void CRAppendCrashLogMessage(const char *msg) {
79   BlockingMutexLock l(&crashreporter_info_mutex);
80   internal_strlcat(__crashreporter_info_buff__, msg,
81                    sizeof(__crashreporter_info_buff__)); }
82 }  // namespace __sanitizer
83 
84 #endif  // SANITIZER_MAC
85 #endif  // SANITIZER_MAC_H
86