//===-- sanitizer_platform.h ------------------------------------*- C++ -*-===// // // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. // See https://llvm.org/LICENSE.txt for license information. // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception // //===----------------------------------------------------------------------===// // // Common platform macros. //===----------------------------------------------------------------------===// #ifndef SANITIZER_PLATFORM_H #define SANITIZER_PLATFORM_H #if !defined(__linux__) && !defined(__FreeBSD__) && !defined(__NetBSD__) && \ !defined(__APPLE__) && !defined(_WIN32) && !defined(__Fuchsia__) && \ !(defined(__sun__) && defined(__svr4__)) # error "This operating system is not supported" #endif // Get __GLIBC__ on a glibc platform. Exclude Android: features.h includes C // function declarations into a .S file which doesn't compile. // https://crbug.com/1162741 #if __has_include() && !defined(__ANDROID__) #include #endif #if defined(__linux__) # define SANITIZER_LINUX 1 #else # define SANITIZER_LINUX 0 #endif #if defined(__GLIBC__) # define SANITIZER_GLIBC 1 #else # define SANITIZER_GLIBC 0 #endif #if defined(__FreeBSD__) # define SANITIZER_FREEBSD 1 #else # define SANITIZER_FREEBSD 0 #endif #if defined(__NetBSD__) # define SANITIZER_NETBSD 1 #else # define SANITIZER_NETBSD 0 #endif #if defined(__sun__) && defined(__svr4__) # define SANITIZER_SOLARIS 1 #else # define SANITIZER_SOLARIS 0 #endif #if defined(__APPLE__) # define SANITIZER_MAC 1 # include # if TARGET_OS_OSX # define SANITIZER_OSX 1 # else # define SANITIZER_OSX 0 # endif # if TARGET_OS_IPHONE # define SANITIZER_IOS 1 # else # define SANITIZER_IOS 0 # endif # if TARGET_OS_SIMULATOR # define SANITIZER_IOSSIM 1 # else # define SANITIZER_IOSSIM 0 # endif #else # define SANITIZER_MAC 0 # define SANITIZER_IOS 0 # define SANITIZER_IOSSIM 0 # define SANITIZER_OSX 0 #endif #if defined(__APPLE__) && TARGET_OS_IPHONE && TARGET_OS_WATCH # define SANITIZER_WATCHOS 1 #else # define SANITIZER_WATCHOS 0 #endif #if defined(__APPLE__) && TARGET_OS_IPHONE && TARGET_OS_TV # define SANITIZER_TVOS 1 #else # define SANITIZER_TVOS 0 #endif #if defined(_WIN32) # define SANITIZER_WINDOWS 1 #else # define SANITIZER_WINDOWS 0 #endif #if defined(_WIN64) # define SANITIZER_WINDOWS64 1 #else # define SANITIZER_WINDOWS64 0 #endif #if defined(__ANDROID__) # define SANITIZER_ANDROID 1 #else # define SANITIZER_ANDROID 0 #endif #if defined(__Fuchsia__) # define SANITIZER_FUCHSIA 1 #else # define SANITIZER_FUCHSIA 0 #endif #define SANITIZER_POSIX \ (SANITIZER_FREEBSD || SANITIZER_LINUX || SANITIZER_MAC || \ SANITIZER_NETBSD || SANITIZER_SOLARIS) #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 #if defined(__i386__) || defined(_M_IX86) # define SANITIZER_I386 1 #else # define SANITIZER_I386 0 #endif #if defined(__mips__) # define SANITIZER_MIPS 1 # if defined(__mips64) # define SANITIZER_MIPS32 0 # define SANITIZER_MIPS64 1 # else # define SANITIZER_MIPS32 1 # define SANITIZER_MIPS64 0 # endif #else # define SANITIZER_MIPS 0 # define SANITIZER_MIPS32 0 # define SANITIZER_MIPS64 0 #endif #if defined(__s390__) # define SANITIZER_S390 1 # if defined(__s390x__) # define SANITIZER_S390_31 0 # define SANITIZER_S390_64 1 # else # define SANITIZER_S390_31 1 # define SANITIZER_S390_64 0 # endif #else # define SANITIZER_S390 0 # define SANITIZER_S390_31 0 # define SANITIZER_S390_64 0 #endif #if defined(__powerpc__) # define SANITIZER_PPC 1 # if defined(__powerpc64__) # define SANITIZER_PPC32 0 # define SANITIZER_PPC64 1 // 64-bit PPC has two ABIs (v1 and v2). The old powerpc64 target is // big-endian, and uses v1 ABI (known for its function descriptors), // while the new powerpc64le target is little-endian and uses v2. // In theory, you could convince gcc to compile for their evil twins // (eg. big-endian v2), but you won't find such combinations in the wild // (it'd require bootstrapping a whole system, which would be quite painful // - there's no target triple for that). LLVM doesn't support them either. # if _CALL_ELF == 2 # define SANITIZER_PPC64V1 0 # define SANITIZER_PPC64V2 1 # else # define SANITIZER_PPC64V1 1 # define SANITIZER_PPC64V2 0 # endif # else # define SANITIZER_PPC32 1 # define SANITIZER_PPC64 0 # define SANITIZER_PPC64V1 0 # define SANITIZER_PPC64V2 0 # endif #else # define SANITIZER_PPC 0 # define SANITIZER_PPC32 0 # define SANITIZER_PPC64 0 # define SANITIZER_PPC64V1 0 # define SANITIZER_PPC64V2 0 #endif #if defined(__arm__) # define SANITIZER_ARM 1 #else # define SANITIZER_ARM 0 #endif #if SANITIZER_SOLARIS && SANITIZER_WORDSIZE == 32 # define SANITIZER_SOLARIS32 1 #else # define SANITIZER_SOLARIS32 0 #endif #if defined(__riscv) && (__riscv_xlen == 64) #define SANITIZER_RISCV64 1 #else #define SANITIZER_RISCV64 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 (SANITIZER_ANDROID && defined(__aarch64__)) || SANITIZER_FUCHSIA # define SANITIZER_CAN_USE_ALLOCATOR64 1 # elif defined(__mips64) || defined(__aarch64__) # 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. Larger values // will still work but will consume more memory for TwoLevelByteMap. #if defined(__mips__) #if SANITIZER_GO && defined(__mips64) #define SANITIZER_MMAP_RANGE_SIZE FIRST_32_SECOND_64(1ULL << 32, 1ULL << 47) #else # define SANITIZER_MMAP_RANGE_SIZE FIRST_32_SECOND_64(1ULL << 32, 1ULL << 40) #endif #elif SANITIZER_RISCV64 #define SANITIZER_MMAP_RANGE_SIZE FIRST_32_SECOND_64(1ULL << 32, 1ULL << 38) #elif defined(__aarch64__) # if SANITIZER_MAC # if SANITIZER_OSX || SANITIZER_IOSSIM # define SANITIZER_MMAP_RANGE_SIZE FIRST_32_SECOND_64(1ULL << 32, 1ULL << 47) # else // Darwin iOS/ARM64 has a 36-bit VMA, 64GiB VM # define SANITIZER_MMAP_RANGE_SIZE FIRST_32_SECOND_64(1ULL << 32, 1ULL << 36) # endif # else # define SANITIZER_MMAP_RANGE_SIZE FIRST_32_SECOND_64(1ULL << 32, 1ULL << 48) # endif #elif defined(__sparc__) #define SANITIZER_MMAP_RANGE_SIZE FIRST_32_SECOND_64(1ULL << 32, 1ULL << 52) #else # define SANITIZER_MMAP_RANGE_SIZE FIRST_32_SECOND_64(1ULL << 32, 1ULL << 47) #endif // Whether the addresses are sign-extended from the VMA range to the word. // The SPARC64 Linux port implements this to split the VMA space into two // non-contiguous halves with a huge hole in the middle. #if defined(__sparc__) && SANITIZER_WORDSIZE == 64 #define SANITIZER_SIGN_EXTENDED_ADDRESSES 1 #else #define SANITIZER_SIGN_EXTENDED_ADDRESSES 0 #endif // The AArch64 and RISC-V linux ports use 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__) || defined(__riscv)) && 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 #if defined(__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 /// \macro MSC_PREREQ /// \brief Is the compiler MSVC of at least the specified version? /// The common \param version values to check for are: /// * 1800: Microsoft Visual Studio 2013 / 12.0 /// * 1900: Microsoft Visual Studio 2015 / 14.0 #ifdef _MSC_VER # define MSC_PREREQ(version) (_MSC_VER >= (version)) #else # define MSC_PREREQ(version) 0 #endif #if SANITIZER_MAC && !(defined(__arm64__) && SANITIZER_IOS) # define SANITIZER_NON_UNIQUE_TYPEINFO 0 #else # define SANITIZER_NON_UNIQUE_TYPEINFO 1 #endif // On linux, some architectures had an ABI transition from 64-bit long double // (ie. same as double) to 128-bit long double. On those, glibc symbols // involving long doubles come in two versions, and we need to pass the // correct one to dlvsym when intercepting them. #if SANITIZER_LINUX && (SANITIZER_S390 || SANITIZER_PPC32 || SANITIZER_PPC64V1) #define SANITIZER_NLDBL_VERSION "GLIBC_2.4" #endif #if SANITIZER_GO == 0 # define SANITIZER_GO 0 #endif // On PowerPC and ARM Thumb, calling pthread_exit() causes LSan to detect leaks. // pthread_exit() performs unwinding that leads to dlopen'ing libgcc_s.so. // dlopen mallocs "libgcc_s.so" string which confuses LSan, it fails to realize // that this allocation happens in dynamic linker and should be ignored. #if SANITIZER_PPC || defined(__thumb__) # define SANITIZER_SUPPRESS_LEAK_ON_PTHREAD_EXIT 1 #else # define SANITIZER_SUPPRESS_LEAK_ON_PTHREAD_EXIT 0 #endif #if SANITIZER_FREEBSD || SANITIZER_MAC || SANITIZER_NETBSD || \ SANITIZER_SOLARIS # define SANITIZER_MADVISE_DONTNEED MADV_FREE #else # define SANITIZER_MADVISE_DONTNEED MADV_DONTNEED #endif // Older gcc have issues aligning to a constexpr, and require an integer. // See https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56859 among others. #if defined(__powerpc__) || defined(__powerpc64__) # define SANITIZER_CACHE_LINE_SIZE 128 #else # define SANITIZER_CACHE_LINE_SIZE 64 #endif // Enable offline markup symbolizer for Fuchsia. #if SANITIZER_FUCHSIA # define SANITIZER_SYMBOLIZER_MARKUP 1 #else #define SANITIZER_SYMBOLIZER_MARKUP 0 #endif // Enable ability to support sanitizer initialization that is // compatible with the sanitizer library being loaded via // `dlopen()`. #if SANITIZER_MAC #define SANITIZER_SUPPORTS_INIT_FOR_DLOPEN 1 #else #define SANITIZER_SUPPORTS_INIT_FOR_DLOPEN 0 #endif #endif // SANITIZER_PLATFORM_H