1 //===-- sanitizer_platform.h ------------------------------------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // Common platform macros.
11 //===----------------------------------------------------------------------===//
13 #ifndef SANITIZER_PLATFORM_H
14 #define SANITIZER_PLATFORM_H
16 #if !defined(__linux__) && !defined(__FreeBSD__) && !defined(__NetBSD__) && \
17 !defined(__OpenBSD__) && !defined(__APPLE__) && !defined(_WIN32) && \
18 !defined(__Fuchsia__) && !defined(__rtems__) && \
19 !(defined(__sun__) && defined(__svr4__))
20 # error "This operating system is not supported"
23 #if defined(__linux__)
24 # define SANITIZER_LINUX 1
26 # define SANITIZER_LINUX 0
29 #if defined(__FreeBSD__)
30 # define SANITIZER_FREEBSD 1
32 # define SANITIZER_FREEBSD 0
35 #if defined(__NetBSD__)
36 # define SANITIZER_NETBSD 1
38 # define SANITIZER_NETBSD 0
41 #if defined(__OpenBSD__)
42 # define SANITIZER_OPENBSD 1
44 # define SANITIZER_OPENBSD 0
47 #if defined(__sun__) && defined(__svr4__)
48 # define SANITIZER_SOLARIS 1
50 # define SANITIZER_SOLARIS 0
53 #if defined(__APPLE__)
54 # define SANITIZER_MAC 1
55 # include <TargetConditionals.h>
57 # define SANITIZER_IOS 1
59 # define SANITIZER_IOS 0
61 # if TARGET_OS_SIMULATOR
62 # define SANITIZER_IOSSIM 1
64 # define SANITIZER_IOSSIM 0
67 # define SANITIZER_MAC 0
68 # define SANITIZER_IOS 0
69 # define SANITIZER_IOSSIM 0
72 #if defined(__APPLE__) && TARGET_OS_IPHONE && TARGET_OS_WATCH
73 # define SANITIZER_WATCHOS 1
75 # define SANITIZER_WATCHOS 0
78 #if defined(__APPLE__) && TARGET_OS_IPHONE && TARGET_OS_TV
79 # define SANITIZER_TVOS 1
81 # define SANITIZER_TVOS 0
85 # define SANITIZER_WINDOWS 1
87 # define SANITIZER_WINDOWS 0
91 # define SANITIZER_WINDOWS64 1
93 # define SANITIZER_WINDOWS64 0
96 #if defined(__ANDROID__)
97 # define SANITIZER_ANDROID 1
99 # define SANITIZER_ANDROID 0
102 #if defined(__Fuchsia__)
103 # define SANITIZER_FUCHSIA 1
105 # define SANITIZER_FUCHSIA 0
108 #if defined(__rtems__)
109 # define SANITIZER_RTEMS 1
111 # define SANITIZER_RTEMS 0
114 #define SANITIZER_POSIX \
115 (SANITIZER_FREEBSD || SANITIZER_LINUX || SANITIZER_MAC || \
116 SANITIZER_NETBSD || SANITIZER_OPENBSD || SANITIZER_SOLARIS)
118 #if __LP64__ || defined(_WIN64)
119 # define SANITIZER_WORDSIZE 64
121 # define SANITIZER_WORDSIZE 32
124 #if SANITIZER_WORDSIZE == 64
125 # define FIRST_32_SECOND_64(a, b) (b)
127 # define FIRST_32_SECOND_64(a, b) (a)
130 #if defined(__x86_64__) && !defined(_LP64)
131 # define SANITIZER_X32 1
133 # define SANITIZER_X32 0
136 #if defined(__mips__)
137 # define SANITIZER_MIPS 1
138 # if defined(__mips64)
139 # define SANITIZER_MIPS32 0
140 # define SANITIZER_MIPS64 1
142 # define SANITIZER_MIPS32 1
143 # define SANITIZER_MIPS64 0
146 # define SANITIZER_MIPS 0
147 # define SANITIZER_MIPS32 0
148 # define SANITIZER_MIPS64 0
151 #if defined(__s390__)
152 # define SANITIZER_S390 1
153 # if defined(__s390x__)
154 # define SANITIZER_S390_31 0
155 # define SANITIZER_S390_64 1
157 # define SANITIZER_S390_31 1
158 # define SANITIZER_S390_64 0
161 # define SANITIZER_S390 0
162 # define SANITIZER_S390_31 0
163 # define SANITIZER_S390_64 0
166 #if defined(__powerpc__)
167 # define SANITIZER_PPC 1
168 # if defined(__powerpc64__)
169 # define SANITIZER_PPC32 0
170 # define SANITIZER_PPC64 1
171 // 64-bit PPC has two ABIs (v1 and v2). The old powerpc64 target is
172 // big-endian, and uses v1 ABI (known for its function descriptors),
173 // while the new powerpc64le target is little-endian and uses v2.
174 // In theory, you could convince gcc to compile for their evil twins
175 // (eg. big-endian v2), but you won't find such combinations in the wild
176 // (it'd require bootstrapping a whole system, which would be quite painful
177 // - there's no target triple for that). LLVM doesn't support them either.
179 # define SANITIZER_PPC64V1 0
180 # define SANITIZER_PPC64V2 1
182 # define SANITIZER_PPC64V1 1
183 # define SANITIZER_PPC64V2 0
186 # define SANITIZER_PPC32 1
187 # define SANITIZER_PPC64 0
188 # define SANITIZER_PPC64V1 0
189 # define SANITIZER_PPC64V2 0
192 # define SANITIZER_PPC 0
193 # define SANITIZER_PPC32 0
194 # define SANITIZER_PPC64 0
195 # define SANITIZER_PPC64V1 0
196 # define SANITIZER_PPC64V2 0
200 # define SANITIZER_ARM 1
202 # define SANITIZER_ARM 0
205 #if SANITIZER_SOLARIS && SANITIZER_WORDSIZE == 32
206 # define SANITIZER_SOLARIS32 1
208 # define SANITIZER_SOLARIS32 0
211 #if defined(__myriad2__)
212 # define SANITIZER_MYRIAD2 1
214 # define SANITIZER_MYRIAD2 0
217 // By default we allow to use SizeClassAllocator64 on 64-bit platform.
218 // But in some cases (e.g. AArch64's 39-bit address space) SizeClassAllocator64
219 // does not work well and we need to fallback to SizeClassAllocator32.
220 // For such platforms build this code with -DSANITIZER_CAN_USE_ALLOCATOR64=0 or
221 // change the definition of SANITIZER_CAN_USE_ALLOCATOR64 here.
222 #ifndef SANITIZER_CAN_USE_ALLOCATOR64
223 # if (SANITIZER_ANDROID && defined(__aarch64__)) || SANITIZER_FUCHSIA
224 # define SANITIZER_CAN_USE_ALLOCATOR64 1
225 # elif defined(__mips64) || defined(__aarch64__)
226 # define SANITIZER_CAN_USE_ALLOCATOR64 0
228 # define SANITIZER_CAN_USE_ALLOCATOR64 (SANITIZER_WORDSIZE == 64)
232 // The range of addresses which can be returned my mmap.
233 // FIXME: this value should be different on different platforms. Larger values
234 // will still work but will consume more memory for TwoLevelByteMap.
235 #if defined(__mips__)
236 # define SANITIZER_MMAP_RANGE_SIZE FIRST_32_SECOND_64(1ULL << 32, 1ULL << 40)
237 #elif defined(__aarch64__)
239 // Darwin iOS/ARM64 has a 36-bit VMA, 64GiB VM
240 # define SANITIZER_MMAP_RANGE_SIZE FIRST_32_SECOND_64(1ULL << 32, 1ULL << 36)
242 # define SANITIZER_MMAP_RANGE_SIZE FIRST_32_SECOND_64(1ULL << 32, 1ULL << 48)
245 # define SANITIZER_MMAP_RANGE_SIZE FIRST_32_SECOND_64(1ULL << 32, 1ULL << 47)
248 // The AArch64 linux port uses the canonical syscall set as mandated by
249 // the upstream linux community for all new ports. Other ports may still
250 // use legacy syscalls.
251 #ifndef SANITIZER_USES_CANONICAL_LINUX_SYSCALLS
252 # if defined(__aarch64__) && SANITIZER_LINUX
253 # define SANITIZER_USES_CANONICAL_LINUX_SYSCALLS 1
255 # define SANITIZER_USES_CANONICAL_LINUX_SYSCALLS 0
259 // udi16 syscalls can only be used when the following conditions are
261 // * target is one of arm32, x86-32, sparc32, sh or m68k
262 // * libc version is libc5, glibc-2.0, glibc-2.1 or glibc-2.2 to 2.15
263 // built against > linux-2.2 kernel headers
264 // Since we don't want to include libc headers here, we check the
266 #if defined(__arm__) || SANITIZER_X32 || defined(__sparc__)
267 #define SANITIZER_USES_UID16_SYSCALLS 1
269 #define SANITIZER_USES_UID16_SYSCALLS 0
272 #if defined(__mips__)
273 # define SANITIZER_POINTER_FORMAT_LENGTH FIRST_32_SECOND_64(8, 10)
275 # define SANITIZER_POINTER_FORMAT_LENGTH FIRST_32_SECOND_64(8, 12)
278 /// \macro MSC_PREREQ
279 /// \brief Is the compiler MSVC of at least the specified version?
280 /// The common \param version values to check for are:
281 /// * 1800: Microsoft Visual Studio 2013 / 12.0
282 /// * 1900: Microsoft Visual Studio 2015 / 14.0
284 # define MSC_PREREQ(version) (_MSC_VER >= (version))
286 # define MSC_PREREQ(version) 0
289 #if defined(__arm64__) && SANITIZER_IOS
290 # define SANITIZER_NON_UNIQUE_TYPEINFO 1
292 # define SANITIZER_NON_UNIQUE_TYPEINFO 0
295 // On linux, some architectures had an ABI transition from 64-bit long double
296 // (ie. same as double) to 128-bit long double. On those, glibc symbols
297 // involving long doubles come in two versions, and we need to pass the
298 // correct one to dlvsym when intercepting them.
299 #if SANITIZER_LINUX && (SANITIZER_S390 || SANITIZER_PPC32 || SANITIZER_PPC64V1)
300 #define SANITIZER_NLDBL_VERSION "GLIBC_2.4"
303 #if SANITIZER_GO == 0
304 # define SANITIZER_GO 0
307 // On PowerPC and ARM Thumb, calling pthread_exit() causes LSan to detect leaks.
308 // pthread_exit() performs unwinding that leads to dlopen'ing libgcc_s.so.
309 // dlopen mallocs "libgcc_s.so" string which confuses LSan, it fails to realize
310 // that this allocation happens in dynamic linker and should be ignored.
311 #if SANITIZER_PPC || defined(__thumb__)
312 # define SANITIZER_SUPPRESS_LEAK_ON_PTHREAD_EXIT 1
314 # define SANITIZER_SUPPRESS_LEAK_ON_PTHREAD_EXIT 0
317 #if SANITIZER_FREEBSD || SANITIZER_MAC || SANITIZER_NETBSD || \
318 SANITIZER_OPENBSD || SANITIZER_SOLARIS
319 # define SANITIZER_MADVISE_DONTNEED MADV_FREE
321 # define SANITIZER_MADVISE_DONTNEED MADV_DONTNEED
324 // Older gcc have issues aligning to a constexpr, and require an integer.
325 // See https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56859 among others.
326 #if defined(__powerpc__) || defined(__powerpc64__)
327 # define SANITIZER_CACHE_LINE_SIZE 128
329 # define SANITIZER_CACHE_LINE_SIZE 64
332 // Enable offline markup symbolizer for Fuchsia and RTEMS.
333 #if SANITIZER_FUCHSIA || SANITIZER_RTEMS
334 #define SANITIZER_SYMBOLIZER_MARKUP 1
336 #define SANITIZER_SYMBOLIZER_MARKUP 0
339 // Enable ability to support sanitizer initialization that is
340 // compatible with the sanitizer library being loaded via
343 #define SANITIZER_SUPPORTS_INIT_FOR_DLOPEN 1
345 #define SANITIZER_SUPPORTS_INIT_FOR_DLOPEN 0
348 #endif // SANITIZER_PLATFORM_H