371 lines
10 KiB
C++
371 lines
10 KiB
C++
//===-- sanitizer_platform.h ------------------------------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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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__) && !defined(__NetBSD__) && \
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!defined(__APPLE__) && !defined(_WIN32) && \
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!defined(__Fuchsia__) && !defined(__rtems__) && \
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!(defined(__sun__) && defined(__svr4__))
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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(__NetBSD__)
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# define SANITIZER_NETBSD 1
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#else
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# define SANITIZER_NETBSD 0
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#endif
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#if defined(__sun__) && defined(__svr4__)
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# define SANITIZER_SOLARIS 1
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#else
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# define SANITIZER_SOLARIS 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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# if TARGET_OS_SIMULATOR
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# define SANITIZER_IOSSIM 1
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# else
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# define SANITIZER_IOSSIM 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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# define SANITIZER_IOSSIM 0
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#endif
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#if defined(__APPLE__) && TARGET_OS_IPHONE && TARGET_OS_WATCH
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# define SANITIZER_WATCHOS 1
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#else
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# define SANITIZER_WATCHOS 0
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#endif
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#if defined(__APPLE__) && TARGET_OS_IPHONE && TARGET_OS_TV
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# define SANITIZER_TVOS 1
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#else
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# define SANITIZER_TVOS 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(_WIN64)
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# define SANITIZER_WINDOWS64 1
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#else
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# define SANITIZER_WINDOWS64 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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#if defined(__Fuchsia__)
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# define SANITIZER_FUCHSIA 1
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#else
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# define SANITIZER_FUCHSIA 0
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#endif
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#if defined(__rtems__)
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# define SANITIZER_RTEMS 1
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#else
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# define SANITIZER_RTEMS 0
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#endif
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#define SANITIZER_POSIX \
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(SANITIZER_FREEBSD || SANITIZER_LINUX || SANITIZER_MAC || \
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SANITIZER_NETBSD || SANITIZER_SOLARIS)
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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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#if defined(__i386__) || defined(_M_IX86)
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# define SANITIZER_I386 1
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#else
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# define SANITIZER_I386 0
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#endif
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#if defined(__mips__)
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# define SANITIZER_MIPS 1
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# if defined(__mips64)
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# define SANITIZER_MIPS32 0
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# define SANITIZER_MIPS64 1
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# else
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# define SANITIZER_MIPS32 1
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# define SANITIZER_MIPS64 0
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# endif
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#else
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# define SANITIZER_MIPS 0
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# define SANITIZER_MIPS32 0
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# define SANITIZER_MIPS64 0
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#endif
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#if defined(__s390__)
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# define SANITIZER_S390 1
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# if defined(__s390x__)
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# define SANITIZER_S390_31 0
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# define SANITIZER_S390_64 1
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# else
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# define SANITIZER_S390_31 1
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# define SANITIZER_S390_64 0
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# endif
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#else
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# define SANITIZER_S390 0
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# define SANITIZER_S390_31 0
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# define SANITIZER_S390_64 0
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#endif
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#if defined(__powerpc__)
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# define SANITIZER_PPC 1
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# if defined(__powerpc64__)
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# define SANITIZER_PPC32 0
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# define SANITIZER_PPC64 1
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// 64-bit PPC has two ABIs (v1 and v2). The old powerpc64 target is
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// big-endian, and uses v1 ABI (known for its function descriptors),
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// while the new powerpc64le target is little-endian and uses v2.
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// In theory, you could convince gcc to compile for their evil twins
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// (eg. big-endian v2), but you won't find such combinations in the wild
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// (it'd require bootstrapping a whole system, which would be quite painful
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// - there's no target triple for that). LLVM doesn't support them either.
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# if _CALL_ELF == 2
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# define SANITIZER_PPC64V1 0
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# define SANITIZER_PPC64V2 1
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# else
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# define SANITIZER_PPC64V1 1
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# define SANITIZER_PPC64V2 0
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# endif
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# else
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# define SANITIZER_PPC32 1
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# define SANITIZER_PPC64 0
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# define SANITIZER_PPC64V1 0
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# define SANITIZER_PPC64V2 0
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# endif
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#else
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# define SANITIZER_PPC 0
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# define SANITIZER_PPC32 0
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# define SANITIZER_PPC64 0
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# define SANITIZER_PPC64V1 0
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# define SANITIZER_PPC64V2 0
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#endif
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#if defined(__arm__)
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# define SANITIZER_ARM 1
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#else
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# define SANITIZER_ARM 0
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#endif
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#if SANITIZER_SOLARIS && SANITIZER_WORDSIZE == 32
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# define SANITIZER_SOLARIS32 1
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#else
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# define SANITIZER_SOLARIS32 0
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#endif
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#if defined(__myriad2__)
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# define SANITIZER_MYRIAD2 1
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#else
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# define SANITIZER_MYRIAD2 0
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#endif
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#if defined(__riscv) && (__riscv_xlen == 64)
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#define SANITIZER_RISCV64 1
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#else
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#define SANITIZER_RISCV64 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 (SANITIZER_ANDROID && defined(__aarch64__)) || SANITIZER_FUCHSIA
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# define SANITIZER_CAN_USE_ALLOCATOR64 1
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# elif defined(__mips64) || defined(__aarch64__)
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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. Larger values
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// will still work but will consume more memory for TwoLevelByteMap.
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#if defined(__mips__)
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#if SANITIZER_GO && defined(__mips64)
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#define SANITIZER_MMAP_RANGE_SIZE FIRST_32_SECOND_64(1ULL << 32, 1ULL << 47)
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#else
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# define SANITIZER_MMAP_RANGE_SIZE FIRST_32_SECOND_64(1ULL << 32, 1ULL << 40)
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#endif
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#elif SANITIZER_RISCV64
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#define SANITIZER_MMAP_RANGE_SIZE FIRST_32_SECOND_64(1ULL << 32, 1ULL << 38)
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#elif defined(__aarch64__)
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# if SANITIZER_MAC
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// Darwin iOS/ARM64 has a 36-bit VMA, 64GiB VM
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# define SANITIZER_MMAP_RANGE_SIZE FIRST_32_SECOND_64(1ULL << 32, 1ULL << 36)
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# else
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# define SANITIZER_MMAP_RANGE_SIZE FIRST_32_SECOND_64(1ULL << 32, 1ULL << 48)
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# endif
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#elif defined(__sparc__)
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#define SANITIZER_MMAP_RANGE_SIZE FIRST_32_SECOND_64(1ULL << 32, 1ULL << 52)
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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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// Whether the addresses are sign-extended from the VMA range to the word.
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// The SPARC64 Linux port implements this to split the VMA space into two
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// non-contiguous halves with a huge hole in the middle.
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#if defined(__sparc__) && SANITIZER_WORDSIZE == 64
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#define SANITIZER_SIGN_EXTENDED_ADDRESSES 1
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#else
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#define SANITIZER_SIGN_EXTENDED_ADDRESSES 0
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#endif
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// The AArch64 and RISC-V linux ports use the canonical syscall set as
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// mandated by the upstream linux community for all new ports. Other ports
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// may still use legacy syscalls.
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#ifndef SANITIZER_USES_CANONICAL_LINUX_SYSCALLS
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# if (defined(__aarch64__) || defined(__riscv)) && 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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#if defined(__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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/// \macro MSC_PREREQ
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/// \brief Is the compiler MSVC of at least the specified version?
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/// The common \param version values to check for are:
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/// * 1800: Microsoft Visual Studio 2013 / 12.0
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/// * 1900: Microsoft Visual Studio 2015 / 14.0
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#ifdef _MSC_VER
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# define MSC_PREREQ(version) (_MSC_VER >= (version))
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#else
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# define MSC_PREREQ(version) 0
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#endif
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#if SANITIZER_MAC && !(defined(__arm64__) && SANITIZER_IOS)
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# define SANITIZER_NON_UNIQUE_TYPEINFO 0
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#else
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# define SANITIZER_NON_UNIQUE_TYPEINFO 1
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#endif
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// On linux, some architectures had an ABI transition from 64-bit long double
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// (ie. same as double) to 128-bit long double. On those, glibc symbols
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// involving long doubles come in two versions, and we need to pass the
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// correct one to dlvsym when intercepting them.
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#if SANITIZER_LINUX && (SANITIZER_S390 || SANITIZER_PPC32 || SANITIZER_PPC64V1)
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#define SANITIZER_NLDBL_VERSION "GLIBC_2.4"
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#endif
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#if SANITIZER_GO == 0
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# define SANITIZER_GO 0
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#endif
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// On PowerPC and ARM Thumb, calling pthread_exit() causes LSan to detect leaks.
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// pthread_exit() performs unwinding that leads to dlopen'ing libgcc_s.so.
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// dlopen mallocs "libgcc_s.so" string which confuses LSan, it fails to realize
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// that this allocation happens in dynamic linker and should be ignored.
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#if SANITIZER_PPC || defined(__thumb__)
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# define SANITIZER_SUPPRESS_LEAK_ON_PTHREAD_EXIT 1
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#else
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# define SANITIZER_SUPPRESS_LEAK_ON_PTHREAD_EXIT 0
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#endif
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#if SANITIZER_FREEBSD || SANITIZER_MAC || SANITIZER_NETBSD || \
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SANITIZER_SOLARIS
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# define SANITIZER_MADVISE_DONTNEED MADV_FREE
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#else
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# define SANITIZER_MADVISE_DONTNEED MADV_DONTNEED
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#endif
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// Older gcc have issues aligning to a constexpr, and require an integer.
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// See https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56859 among others.
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#if defined(__powerpc__) || defined(__powerpc64__)
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# define SANITIZER_CACHE_LINE_SIZE 128
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#else
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# define SANITIZER_CACHE_LINE_SIZE 64
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#endif
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// Enable offline markup symbolizer for Fuchsia and RTEMS.
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#if SANITIZER_FUCHSIA || SANITIZER_RTEMS
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#define SANITIZER_SYMBOLIZER_MARKUP 1
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#else
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#define SANITIZER_SYMBOLIZER_MARKUP 0
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#endif
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// Enable ability to support sanitizer initialization that is
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// compatible with the sanitizer library being loaded via
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// `dlopen()`.
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#if SANITIZER_MAC
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#define SANITIZER_SUPPORTS_INIT_FOR_DLOPEN 1
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#else
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#define SANITIZER_SUPPORTS_INIT_FOR_DLOPEN 0
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#endif
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#endif // SANITIZER_PLATFORM_H
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