159 lines
5.0 KiB
C++
159 lines
5.0 KiB
C++
//===-- asan_interceptors.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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// This file is a part of AddressSanitizer, an address sanity checker.
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//
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// ASan-private header for asan_interceptors.cpp
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//===----------------------------------------------------------------------===//
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#ifndef ASAN_INTERCEPTORS_H
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#define ASAN_INTERCEPTORS_H
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#include "asan_internal.h"
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#include "asan_interceptors_memintrinsics.h"
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#include "interception/interception.h"
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#include "sanitizer_common/sanitizer_platform_interceptors.h"
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namespace __asan {
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void InitializeAsanInterceptors();
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void InitializePlatformInterceptors();
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#define ENSURE_ASAN_INITED() \
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do { \
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CHECK(!asan_init_is_running); \
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if (UNLIKELY(!asan_inited)) { \
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AsanInitFromRtl(); \
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} \
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} while (0)
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} // namespace __asan
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// There is no general interception at all on Fuchsia and RTEMS.
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// Only the functions in asan_interceptors_memintrinsics.h are
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// really defined to replace libc functions.
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#if !SANITIZER_FUCHSIA && !SANITIZER_RTEMS
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// Use macro to describe if specific function should be
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// intercepted on a given platform.
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#if !SANITIZER_WINDOWS
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# define ASAN_INTERCEPT_ATOLL_AND_STRTOLL 1
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# define ASAN_INTERCEPT__LONGJMP 1
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# define ASAN_INTERCEPT_INDEX 1
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# define ASAN_INTERCEPT_PTHREAD_CREATE 1
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#else
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# define ASAN_INTERCEPT_ATOLL_AND_STRTOLL 0
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# define ASAN_INTERCEPT__LONGJMP 0
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# define ASAN_INTERCEPT_INDEX 0
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# define ASAN_INTERCEPT_PTHREAD_CREATE 0
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#endif
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#if SANITIZER_FREEBSD || SANITIZER_LINUX || SANITIZER_NETBSD || \
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SANITIZER_SOLARIS
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# define ASAN_USE_ALIAS_ATTRIBUTE_FOR_INDEX 1
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#else
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# define ASAN_USE_ALIAS_ATTRIBUTE_FOR_INDEX 0
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#endif
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#if (SANITIZER_LINUX && !SANITIZER_ANDROID) || SANITIZER_SOLARIS
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# define ASAN_INTERCEPT_SWAPCONTEXT 1
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#else
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# define ASAN_INTERCEPT_SWAPCONTEXT 0
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#endif
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#if !SANITIZER_WINDOWS
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# define ASAN_INTERCEPT_SIGLONGJMP 1
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#else
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# define ASAN_INTERCEPT_SIGLONGJMP 0
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#endif
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#if SANITIZER_LINUX && !SANITIZER_ANDROID
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# define ASAN_INTERCEPT___LONGJMP_CHK 1
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#else
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# define ASAN_INTERCEPT___LONGJMP_CHK 0
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#endif
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#if ASAN_HAS_EXCEPTIONS && !SANITIZER_WINDOWS && !SANITIZER_SOLARIS && \
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!SANITIZER_NETBSD
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# define ASAN_INTERCEPT___CXA_THROW 1
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# if ! defined(ASAN_HAS_CXA_RETHROW_PRIMARY_EXCEPTION) \
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|| ASAN_HAS_CXA_RETHROW_PRIMARY_EXCEPTION
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# define ASAN_INTERCEPT___CXA_RETHROW_PRIMARY_EXCEPTION 1
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# else
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# define ASAN_INTERCEPT___CXA_RETHROW_PRIMARY_EXCEPTION 0
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# endif
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# if defined(_GLIBCXX_SJLJ_EXCEPTIONS) || (SANITIZER_IOS && defined(__arm__))
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# define ASAN_INTERCEPT__UNWIND_SJLJ_RAISEEXCEPTION 1
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# else
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# define ASAN_INTERCEPT__UNWIND_RAISEEXCEPTION 1
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# endif
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#else
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# define ASAN_INTERCEPT___CXA_THROW 0
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# define ASAN_INTERCEPT___CXA_RETHROW_PRIMARY_EXCEPTION 0
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# define ASAN_INTERCEPT__UNWIND_RAISEEXCEPTION 0
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# define ASAN_INTERCEPT__UNWIND_SJLJ_RAISEEXCEPTION 0
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#endif
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#if !SANITIZER_WINDOWS
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# define ASAN_INTERCEPT___CXA_ATEXIT 1
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#else
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# define ASAN_INTERCEPT___CXA_ATEXIT 0
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#endif
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#if SANITIZER_NETBSD
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# define ASAN_INTERCEPT_ATEXIT 1
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#else
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# define ASAN_INTERCEPT_ATEXIT 0
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#endif
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#if SANITIZER_LINUX && !SANITIZER_ANDROID
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# define ASAN_INTERCEPT___STRDUP 1
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#else
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# define ASAN_INTERCEPT___STRDUP 0
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#endif
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#if SANITIZER_LINUX && (defined(__arm__) || defined(__aarch64__) || \
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defined(__i386__) || defined(__x86_64__))
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# define ASAN_INTERCEPT_VFORK 1
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#else
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# define ASAN_INTERCEPT_VFORK 0
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#endif
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#if SANITIZER_NETBSD
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# define ASAN_INTERCEPT_PTHREAD_ATFORK 1
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#else
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# define ASAN_INTERCEPT_PTHREAD_ATFORK 0
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#endif
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DECLARE_REAL(int, memcmp, const void *a1, const void *a2, uptr size)
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DECLARE_REAL(char*, strchr, const char *str, int c)
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DECLARE_REAL(SIZE_T, strlen, const char *s)
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DECLARE_REAL(char*, strncpy, char *to, const char *from, uptr size)
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DECLARE_REAL(uptr, strnlen, const char *s, uptr maxlen)
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DECLARE_REAL(char*, strstr, const char *s1, const char *s2)
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#if !SANITIZER_MAC
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#define ASAN_INTERCEPT_FUNC(name) \
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do { \
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if (!INTERCEPT_FUNCTION(name)) \
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VReport(1, "AddressSanitizer: failed to intercept '%s'\n'", #name); \
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} while (0)
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#define ASAN_INTERCEPT_FUNC_VER(name, ver) \
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do { \
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if (!INTERCEPT_FUNCTION_VER(name, ver)) \
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VReport(1, "AddressSanitizer: failed to intercept '%s@@%s'\n", #name, \
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#ver); \
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} while (0)
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#else
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// OS X interceptors don't need to be initialized with INTERCEPT_FUNCTION.
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#define ASAN_INTERCEPT_FUNC(name)
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#endif // SANITIZER_MAC
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#endif // !SANITIZER_FUCHSIA
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#endif // ASAN_INTERCEPTORS_H
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