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Diffstat (limited to 'contrib/llvm-project/compiler-rt/lib/asan/asan_interceptors.h')
| -rw-r--r-- | contrib/llvm-project/compiler-rt/lib/asan/asan_interceptors.h | 167 |
1 files changed, 167 insertions, 0 deletions
diff --git a/contrib/llvm-project/compiler-rt/lib/asan/asan_interceptors.h b/contrib/llvm-project/compiler-rt/lib/asan/asan_interceptors.h new file mode 100644 index 000000000000..826b45f5ada8 --- /dev/null +++ b/contrib/llvm-project/compiler-rt/lib/asan/asan_interceptors.h @@ -0,0 +1,167 @@ +//===-- asan_interceptors.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 +// +//===----------------------------------------------------------------------===// +// +// This file is a part of AddressSanitizer, an address sanity checker. +// +// ASan-private header for asan_interceptors.cpp +//===----------------------------------------------------------------------===// +#ifndef ASAN_INTERCEPTORS_H +#define ASAN_INTERCEPTORS_H + +#include "asan_interceptors_memintrinsics.h" +#include "asan_internal.h" +#include "interception/interception.h" +#include "sanitizer_common/sanitizer_platform.h" +#include "sanitizer_common/sanitizer_platform_interceptors.h" + +namespace __asan { + +void InitializeAsanInterceptors(); +void InitializePlatformInterceptors(); + +} // namespace __asan + +// There is no general interception at all on Fuchsia. +// Only the functions in asan_interceptors_memintrinsics.h are +// really defined to replace libc functions. +#if !SANITIZER_FUCHSIA + +// Use macro to describe if specific function should be +// intercepted on a given platform. +#if !SANITIZER_WINDOWS +# define ASAN_INTERCEPT__LONGJMP 1 +# define ASAN_INTERCEPT_INDEX 1 +# define ASAN_INTERCEPT_PTHREAD_CREATE 1 +#else +# define ASAN_INTERCEPT__LONGJMP 0 +# define ASAN_INTERCEPT_INDEX 0 +# define ASAN_INTERCEPT_PTHREAD_CREATE 0 +#endif + +#if SANITIZER_FREEBSD || SANITIZER_LINUX || SANITIZER_NETBSD || \ + SANITIZER_SOLARIS +# define ASAN_USE_ALIAS_ATTRIBUTE_FOR_INDEX 1 +#else +# define ASAN_USE_ALIAS_ATTRIBUTE_FOR_INDEX 0 +#endif + +#if SANITIZER_GLIBC || SANITIZER_SOLARIS +# define ASAN_INTERCEPT_SWAPCONTEXT 1 +#else +# define ASAN_INTERCEPT_SWAPCONTEXT 0 +#endif + +#if !SANITIZER_WINDOWS +# define ASAN_INTERCEPT_SIGLONGJMP 1 +#else +# define ASAN_INTERCEPT_SIGLONGJMP 0 +#endif + +#if SANITIZER_GLIBC +# define ASAN_INTERCEPT___LONGJMP_CHK 1 +#else +# define ASAN_INTERCEPT___LONGJMP_CHK 0 +#endif + +#if ASAN_HAS_EXCEPTIONS && !SANITIZER_SOLARIS && !SANITIZER_NETBSD && \ + (!SANITIZER_WINDOWS || (defined(__MINGW32__) && defined(__i386__))) +# define ASAN_INTERCEPT___CXA_THROW 1 +# define ASAN_INTERCEPT___CXA_RETHROW_PRIMARY_EXCEPTION 1 +# if defined(_GLIBCXX_SJLJ_EXCEPTIONS) || (SANITIZER_IOS && defined(__arm__)) +# define ASAN_INTERCEPT__UNWIND_SJLJ_RAISEEXCEPTION 1 +# else +# define ASAN_INTERCEPT__UNWIND_RAISEEXCEPTION 1 +# endif +#else +# define ASAN_INTERCEPT___CXA_THROW 0 +# define ASAN_INTERCEPT___CXA_RETHROW_PRIMARY_EXCEPTION 0 +# define ASAN_INTERCEPT__UNWIND_RAISEEXCEPTION 0 +# define ASAN_INTERCEPT__UNWIND_SJLJ_RAISEEXCEPTION 0 +#endif + +#if !SANITIZER_WINDOWS +# define ASAN_INTERCEPT___CXA_ATEXIT 1 +#else +# define ASAN_INTERCEPT___CXA_ATEXIT 0 +#endif + +#if SANITIZER_NETBSD +# define ASAN_INTERCEPT_ATEXIT 1 +#else +# define ASAN_INTERCEPT_ATEXIT 0 +#endif + +#if SANITIZER_GLIBC +# define ASAN_INTERCEPT___STRDUP 1 +#else +# define ASAN_INTERCEPT___STRDUP 0 +#endif + +#if SANITIZER_GLIBC && ASAN_INTERCEPT_PTHREAD_CREATE +# define ASAN_INTERCEPT_TIMEDJOIN 1 +# define ASAN_INTERCEPT_TRYJOIN 1 +#else +# define ASAN_INTERCEPT_TIMEDJOIN 0 +# define ASAN_INTERCEPT_TRYJOIN 0 +#endif + +#if SANITIZER_LINUX && \ + (defined(__arm__) || defined(__aarch64__) || defined(__i386__) || \ + defined(__x86_64__) || SANITIZER_RISCV64 || SANITIZER_LOONGARCH64) +# define ASAN_INTERCEPT_VFORK 1 +#else +# define ASAN_INTERCEPT_VFORK 0 +#endif + +#if SANITIZER_NETBSD +# define ASAN_INTERCEPT_PTHREAD_ATFORK 1 +#else +# define ASAN_INTERCEPT_PTHREAD_ATFORK 0 +#endif + +DECLARE_REAL(int, memcmp, const void *a1, const void *a2, uptr size) +DECLARE_REAL(char*, strchr, const char *str, int c) +DECLARE_REAL(SIZE_T, strlen, const char *s) +DECLARE_REAL(char*, strncpy, char *to, const char *from, uptr size) +DECLARE_REAL(uptr, strnlen, const char *s, uptr maxlen) +DECLARE_REAL(char*, strstr, const char *s1, const char *s2) + +# if !SANITIZER_APPLE +# define ASAN_INTERCEPT_FUNC(name) \ + do { \ + if (!INTERCEPT_FUNCTION(name)) \ + VReport(1, "AddressSanitizer: failed to intercept '%s'\n", #name); \ + } while (0) +# define ASAN_INTERCEPT_FUNC_VER(name, ver) \ + do { \ + if (!INTERCEPT_FUNCTION_VER(name, ver)) \ + VReport(1, "AddressSanitizer: failed to intercept '%s@@%s'\n", \ + #name, ver); \ + } while (0) +# define ASAN_INTERCEPT_FUNC_VER_UNVERSIONED_FALLBACK(name, ver) \ + do { \ + if (!INTERCEPT_FUNCTION_VER(name, ver) && !INTERCEPT_FUNCTION(name)) \ + VReport(1, \ + "AddressSanitizer: failed to intercept '%s@@%s' or '%s'\n", \ + #name, ver, #name); \ + } while (0) + +# else +// OS X interceptors don't need to be initialized with INTERCEPT_FUNCTION. +# define ASAN_INTERCEPT_FUNC(name) +# endif // SANITIZER_APPLE + +#define ASAN_INTERCEPTOR_ENTER(ctx, func) \ + AsanInterceptorContext _ctx = {#func}; \ + ctx = (void *)&_ctx; \ + (void) ctx; +#define COMMON_INTERCEPT_FUNCTION(name) ASAN_INTERCEPT_FUNC(name) + +#endif // !SANITIZER_FUCHSIA + +#endif // ASAN_INTERCEPTORS_H |