forked from OSchip/llvm-project
134 lines
3.8 KiB
C++
134 lines
3.8 KiB
C++
//===-- sanitizer_platform.h ------------------------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// Common platform macros.
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//===----------------------------------------------------------------------===//
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#ifndef SANITIZER_PLATFORM_H
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#define SANITIZER_PLATFORM_H
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#if !defined(__linux__) && !defined(__FreeBSD__) && \
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!defined(__APPLE__) && !defined(_WIN32)
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# error "This operating system is not supported"
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#endif
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#if defined(__linux__)
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# define SANITIZER_LINUX 1
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#else
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# define SANITIZER_LINUX 0
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#endif
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#if defined(__FreeBSD__)
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# define SANITIZER_FREEBSD 1
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#else
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# define SANITIZER_FREEBSD 0
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#endif
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#if defined(__APPLE__)
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# define SANITIZER_MAC 1
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# include <TargetConditionals.h>
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# if TARGET_OS_IPHONE
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# define SANITIZER_IOS 1
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# else
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# define SANITIZER_IOS 0
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# endif
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#else
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# define SANITIZER_MAC 0
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# define SANITIZER_IOS 0
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#endif
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#if defined(_WIN32)
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# define SANITIZER_WINDOWS 1
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#else
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# define SANITIZER_WINDOWS 0
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#endif
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#if defined(__ANDROID__)
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# define SANITIZER_ANDROID 1
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#else
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# define SANITIZER_ANDROID 0
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#endif
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#define SANITIZER_POSIX (SANITIZER_FREEBSD || SANITIZER_LINUX || SANITIZER_MAC)
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#if __LP64__ || defined(_WIN64)
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# define SANITIZER_WORDSIZE 64
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#else
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# define SANITIZER_WORDSIZE 32
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#endif
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#if SANITIZER_WORDSIZE == 64
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# define FIRST_32_SECOND_64(a, b) (b)
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#else
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# define FIRST_32_SECOND_64(a, b) (a)
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#endif
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#if defined(__x86_64__) && !defined(_LP64)
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# define SANITIZER_X32 1
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#else
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# define SANITIZER_X32 0
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#endif
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// By default we allow to use SizeClassAllocator64 on 64-bit platform.
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// But in some cases (e.g. AArch64's 39-bit address space) SizeClassAllocator64
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// does not work well and we need to fallback to SizeClassAllocator32.
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// For such platforms build this code with -DSANITIZER_CAN_USE_ALLOCATOR64=0 or
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// change the definition of SANITIZER_CAN_USE_ALLOCATOR64 here.
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#ifndef SANITIZER_CAN_USE_ALLOCATOR64
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# if defined(__aarch64__) || defined(__mips64)
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# define SANITIZER_CAN_USE_ALLOCATOR64 0
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# else
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# define SANITIZER_CAN_USE_ALLOCATOR64 (SANITIZER_WORDSIZE == 64)
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# endif
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#endif
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// The range of addresses which can be returned my mmap.
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// FIXME: this value should be different on different platforms,
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// e.g. on AArch64 it is most likely (1ULL << 39). Larger values will still work
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// but will consume more memory for TwoLevelByteMap.
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#if defined(__aarch64__)
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# define SANITIZER_MMAP_RANGE_SIZE FIRST_32_SECOND_64(1ULL << 32, 1ULL << 39)
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#elif defined(__mips__)
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# define SANITIZER_MMAP_RANGE_SIZE FIRST_32_SECOND_64(1ULL << 32, 1ULL << 40)
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#else
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# define SANITIZER_MMAP_RANGE_SIZE FIRST_32_SECOND_64(1ULL << 32, 1ULL << 47)
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#endif
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// The AArch64 linux port uses the canonical syscall set as mandated by
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// the upstream linux community for all new ports. Other ports may still
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// use legacy syscalls.
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#ifndef SANITIZER_USES_CANONICAL_LINUX_SYSCALLS
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# if defined(__aarch64__) && SANITIZER_LINUX
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# define SANITIZER_USES_CANONICAL_LINUX_SYSCALLS 1
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# else
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# define SANITIZER_USES_CANONICAL_LINUX_SYSCALLS 0
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# endif
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#endif
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// udi16 syscalls can only be used when the following conditions are
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// met:
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// * target is one of arm32, x86-32, sparc32, sh or m68k
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// * libc version is libc5, glibc-2.0, glibc-2.1 or glibc-2.2 to 2.15
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// built against > linux-2.2 kernel headers
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// Since we don't want to include libc headers here, we check the
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// target only.
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#if defined(__arm__) || SANITIZER_X32 || defined(__sparc__)
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#define SANITIZER_USES_UID16_SYSCALLS 1
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#else
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#define SANITIZER_USES_UID16_SYSCALLS 0
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#endif
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#ifdef __mips__
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# define SANITIZER_POINTER_FORMAT_LENGTH FIRST_32_SECOND_64(8, 10)
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#else
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# define SANITIZER_POINTER_FORMAT_LENGTH FIRST_32_SECOND_64(8, 12)
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#endif
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#endif // SANITIZER_PLATFORM_H
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