1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
|
//===-- sanitizer_platform.h ------------------------------------*- C++ -*-===//
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// Common platform macros.
//===----------------------------------------------------------------------===//
#ifndef SANITIZER_PLATFORM_H
#define SANITIZER_PLATFORM_H
#if !defined(__linux__) && !defined(__FreeBSD__) && \
!defined(__APPLE__) && !defined(_WIN32)
# error "This operating system is not supported"
#endif
#if defined(__linux__)
# define SANITIZER_LINUX 1
#else
# define SANITIZER_LINUX 0
#endif
#if defined(__FreeBSD__)
# define SANITIZER_FREEBSD 1
#else
# define SANITIZER_FREEBSD 0
#endif
#if defined(__APPLE__)
# define SANITIZER_MAC 1
# include <TargetConditionals.h>
# if TARGET_OS_IPHONE
# define SANITIZER_IOS 1
# else
# define SANITIZER_IOS 0
# endif
#else
# define SANITIZER_MAC 0
# define SANITIZER_IOS 0
#endif
#if defined(_WIN32)
# define SANITIZER_WINDOWS 1
#else
# define SANITIZER_WINDOWS 0
#endif
#if defined(__ANDROID__)
# define SANITIZER_ANDROID 1
#else
# define SANITIZER_ANDROID 0
#endif
#define SANITIZER_POSIX (SANITIZER_FREEBSD || SANITIZER_LINUX || SANITIZER_MAC)
#if __LP64__ || defined(_WIN64)
# define SANITIZER_WORDSIZE 64
#else
# define SANITIZER_WORDSIZE 32
#endif
#if SANITIZER_WORDSIZE == 64
# define FIRST_32_SECOND_64(a, b) (b)
#else
# define FIRST_32_SECOND_64(a, b) (a)
#endif
#if defined(__x86_64__) && !defined(_LP64)
# define SANITIZER_X32 1
#else
# define SANITIZER_X32 0
#endif
// By default we allow to use SizeClassAllocator64 on 64-bit platform.
// But in some cases (e.g. AArch64's 39-bit address space) SizeClassAllocator64
// does not work well and we need to fallback to SizeClassAllocator32.
// For such platforms build this code with -DSANITIZER_CAN_USE_ALLOCATOR64=0 or
// change the definition of SANITIZER_CAN_USE_ALLOCATOR64 here.
#ifndef SANITIZER_CAN_USE_ALLOCATOR64
# if defined(__aarch64__) || defined(__mips64)
# define SANITIZER_CAN_USE_ALLOCATOR64 0
# else
# define SANITIZER_CAN_USE_ALLOCATOR64 (SANITIZER_WORDSIZE == 64)
# endif
#endif
// The range of addresses which can be returned my mmap.
// FIXME: this value should be different on different platforms,
// e.g. on AArch64 it is most likely (1ULL << 39). Larger values will still work
// but will consume more memory for TwoLevelByteMap.
#if defined(__aarch64__)
# define SANITIZER_MMAP_RANGE_SIZE FIRST_32_SECOND_64(1ULL << 32, 1ULL << 39)
#else
# define SANITIZER_MMAP_RANGE_SIZE FIRST_32_SECOND_64(1ULL << 32, 1ULL << 47)
#endif
// The AArch64 linux port uses the canonical syscall set as mandated by
// the upstream linux community for all new ports. Other ports may still
// use legacy syscalls.
#ifndef SANITIZER_USES_CANONICAL_LINUX_SYSCALLS
# if defined(__aarch64__) && SANITIZER_LINUX
# define SANITIZER_USES_CANONICAL_LINUX_SYSCALLS 1
# else
# define SANITIZER_USES_CANONICAL_LINUX_SYSCALLS 0
# endif
#endif
// udi16 syscalls can only be used when the following conditions are
// met:
// * target is one of arm32, x86-32, sparc32, sh or m68k
// * libc version is libc5, glibc-2.0, glibc-2.1 or glibc-2.2 to 2.15
// built against > linux-2.2 kernel headers
// Since we don't want to include libc headers here, we check the
// target only.
#if defined(__arm__) || SANITIZER_X32 || defined(__sparc__)
#define SANITIZER_USES_UID16_SYSCALLS 1
#else
#define SANITIZER_USES_UID16_SYSCALLS 0
#endif
#ifdef __mips__
# define SANITIZER_POINTER_FORMAT_LENGTH FIRST_32_SECOND_64(8, 10)
#else
# define SANITIZER_POINTER_FORMAT_LENGTH FIRST_32_SECOND_64(8, 12)
#endif
#endif // SANITIZER_PLATFORM_H
|
