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gcc/libsanitizer/sanitizer_common/sanitizer_internal_defs.h
Max Ostapenko 696d846a56 libsanitizer merge from upstream r250806. 
libsanitizer/

2015-10-20  Maxim Ostapenko  <m.ostapenko@partner.samsung.com>

	* All source files: Merge from upstream r250806.
	* configure.ac (link_sanitizer_common): Add -lrt flag.
	* configure.tgt: Enable TSAN and LSAN for aarch64-linux targets.
	Set CXX_ABI_NEEDED=true for darwin.
	* asan/Makefile.am (asan_files): Add new files.
	(DEFS): Add DCAN_SANITIZE_UB=0 and remove unused and legacy
	DASAN_FLEXIBLE_MAPPING_AND_OFFSET=0.
	* asan/Makefile.in: Regenerate.
	* ubsan/Makefile.am (ubsan_files): Add new files.
	(DEFS): Add DCAN_SANITIZE_UB=1.
	(libubsan_la_LIBADD): Add -lc++abi if CXX_ABI_NEEDED is true.
	* ubsan/Makefile.in: Regenerate.
	* tsan/Makefile.am (tsan_files): Add new files.
	(DEFS): Add DCAN_SANITIZE_UB=0.
	* tsan/Makefile.in: Regenerate.
	* sanitizer_common/Makefile.am (sanitizer_common_files): Add new files.
	* sanitizer_common/Makefile.in: Regenerate.
	* asan/libtool-version: Bump the libasan SONAME.

From-SVN: r229111
2015-10-21 10:32:45 +03:00

312 lines
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//===-- sanitizer_internal_defs.h -------------------------------*- C++ -*-===//
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file is shared between AddressSanitizer and ThreadSanitizer.
// It contains macro used in run-time libraries code.
//===----------------------------------------------------------------------===//
#ifndef SANITIZER_DEFS_H
#define SANITIZER_DEFS_H
#include "sanitizer_platform.h"
#ifndef SANITIZER_DEBUG
# define SANITIZER_DEBUG 0
#endif
// Only use SANITIZER_*ATTRIBUTE* before the function return type!
#if SANITIZER_WINDOWS
# define SANITIZER_INTERFACE_ATTRIBUTE __declspec(dllexport)
// FIXME find out what we need on Windows, if anything.
# define SANITIZER_WEAK_ATTRIBUTE
#elif defined(SANITIZER_GO)
# define SANITIZER_INTERFACE_ATTRIBUTE
# define SANITIZER_WEAK_ATTRIBUTE
#else
# define SANITIZER_INTERFACE_ATTRIBUTE __attribute__((visibility("default")))
# define SANITIZER_WEAK_ATTRIBUTE __attribute__((weak))
#endif
#if (SANITIZER_LINUX || SANITIZER_WINDOWS) && !defined(SANITIZER_GO)
# define SANITIZER_SUPPORTS_WEAK_HOOKS 1
#else
# define SANITIZER_SUPPORTS_WEAK_HOOKS 0
#endif
// We can use .preinit_array section on Linux to call sanitizer initialization
// functions very early in the process startup (unless PIC macro is defined).
// FIXME: do we have anything like this on Mac?
#if SANITIZER_LINUX && !SANITIZER_ANDROID && !defined(PIC)
# define SANITIZER_CAN_USE_PREINIT_ARRAY 1
#else
# define SANITIZER_CAN_USE_PREINIT_ARRAY 0
#endif
// GCC does not understand __has_feature
#if !defined(__has_feature)
# define __has_feature(x) 0
#endif
// For portability reasons we do not include stddef.h, stdint.h or any other
// system header, but we do need some basic types that are not defined
// in a portable way by the language itself.
namespace __sanitizer {
#if defined(_WIN64)
// 64-bit Windows uses LLP64 data model.
typedef unsigned long long uptr; // NOLINT
typedef signed long long sptr; // NOLINT
#else
typedef unsigned long uptr; // NOLINT
typedef signed long sptr; // NOLINT
#endif // defined(_WIN64)
#if defined(__x86_64__)
// Since x32 uses ILP32 data model in 64-bit hardware mode, we must use
// 64-bit pointer to unwind stack frame.
typedef unsigned long long uhwptr; // NOLINT
#else
typedef uptr uhwptr; // NOLINT
#endif
typedef unsigned char u8;
typedef unsigned short u16; // NOLINT
typedef unsigned int u32;
typedef unsigned long long u64; // NOLINT
typedef signed char s8;
typedef signed short s16; // NOLINT
typedef signed int s32;
typedef signed long long s64; // NOLINT
#if SANITIZER_WINDOWS
// On Windows, files are HANDLE, which is a synonim of void*.
// Use void* to avoid including <windows.h> everywhere.
typedef void* fd_t;
typedef unsigned error_t;
#else
typedef int fd_t;
typedef int error_t;
#endif
// WARNING: OFF_T may be different from OS type off_t, depending on the value of
// _FILE_OFFSET_BITS. This definition of OFF_T matches the ABI of system calls
// like pread and mmap, as opposed to pread64 and mmap64.
// FreeBSD, Mac and Linux/x86-64 are special.
#if SANITIZER_FREEBSD || SANITIZER_MAC || \
(SANITIZER_LINUX && defined(__x86_64__))
typedef u64 OFF_T;
#else
typedef uptr OFF_T;
#endif
typedef u64 OFF64_T;
#if (SANITIZER_WORDSIZE == 64) || SANITIZER_MAC
typedef uptr operator_new_size_type;
#else
typedef u32 operator_new_size_type;
#endif
} // namespace __sanitizer
using namespace __sanitizer; // NOLINT
// ----------- ATTENTION -------------
// This header should NOT include any other headers to avoid portability issues.
// Common defs.
#define INLINE inline
#define INTERFACE_ATTRIBUTE SANITIZER_INTERFACE_ATTRIBUTE
#define WEAK SANITIZER_WEAK_ATTRIBUTE
// Platform-specific defs.
#if defined(_MSC_VER)
# define ALWAYS_INLINE __forceinline
// FIXME(timurrrr): do we need this on Windows?
# define ALIAS(x)
# define ALIGNED(x) __declspec(align(x))
# define FORMAT(f, a)
# define NOINLINE __declspec(noinline)
# define NORETURN __declspec(noreturn)
# define THREADLOCAL __declspec(thread)
# define LIKELY(x) (x)
# define UNLIKELY(x) (x)
# define PREFETCH(x) /* _mm_prefetch(x, _MM_HINT_NTA) */
#else // _MSC_VER
# define ALWAYS_INLINE inline __attribute__((always_inline))
# define ALIAS(x) __attribute__((alias(x)))
// Please only use the ALIGNED macro before the type.
// Using ALIGNED after the variable declaration is not portable!
# define ALIGNED(x) __attribute__((aligned(x)))
# define FORMAT(f, a) __attribute__((format(printf, f, a)))
# define NOINLINE __attribute__((noinline))
# define NORETURN __attribute__((noreturn))
# define THREADLOCAL __thread
# define LIKELY(x) __builtin_expect(!!(x), 1)
# define UNLIKELY(x) __builtin_expect(!!(x), 0)
# if defined(__i386__) || defined(__x86_64__)
// __builtin_prefetch(x) generates prefetchnt0 on x86
# define PREFETCH(x) __asm__("prefetchnta (%0)" : : "r" (x))
# else
# define PREFETCH(x) __builtin_prefetch(x)
# endif
#endif // _MSC_VER
#if !defined(_MSC_VER) || defined(__clang__)
# define UNUSED __attribute__((unused))
# define USED __attribute__((used))
#else
# define UNUSED
# define USED
#endif
#if !defined(_MSC_VER) || defined(__clang__) || MSC_PREREQ(1900)
# define NOEXCEPT noexcept
#else
# define NOEXCEPT throw()
#endif
// Unaligned versions of basic types.
typedef ALIGNED(1) u16 uu16;
typedef ALIGNED(1) u32 uu32;
typedef ALIGNED(1) u64 uu64;
typedef ALIGNED(1) s16 us16;
typedef ALIGNED(1) s32 us32;
typedef ALIGNED(1) s64 us64;
#if SANITIZER_WINDOWS
typedef unsigned long DWORD; // NOLINT
typedef DWORD thread_return_t;
# define THREAD_CALLING_CONV __stdcall
#else // _WIN32
typedef void* thread_return_t;
# define THREAD_CALLING_CONV
#endif // _WIN32
typedef thread_return_t (THREAD_CALLING_CONV *thread_callback_t)(void* arg);
// NOTE: Functions below must be defined in each run-time.
namespace __sanitizer {
void NORETURN Die();
// FIXME: No, this shouldn't be in the sanitizer interface.
SANITIZER_INTERFACE_ATTRIBUTE
void NORETURN CheckFailed(const char *file, int line, const char *cond,
u64 v1, u64 v2);
} // namespace __sanitizer
// Check macro
#define RAW_CHECK_MSG(expr, msg) do { \
if (UNLIKELY(!(expr))) { \
RawWrite(msg); \
Die(); \
} \
} while (0)
#define RAW_CHECK(expr) RAW_CHECK_MSG(expr, #expr)
#define CHECK_IMPL(c1, op, c2) \
do { \
__sanitizer::u64 v1 = (u64)(c1); \
__sanitizer::u64 v2 = (u64)(c2); \
if (UNLIKELY(!(v1 op v2))) \
__sanitizer::CheckFailed(__FILE__, __LINE__, \
"(" #c1 ") " #op " (" #c2 ")", v1, v2); \
} while (false) \
/**/
#define CHECK(a) CHECK_IMPL((a), !=, 0)
#define CHECK_EQ(a, b) CHECK_IMPL((a), ==, (b))
#define CHECK_NE(a, b) CHECK_IMPL((a), !=, (b))
#define CHECK_LT(a, b) CHECK_IMPL((a), <, (b))
#define CHECK_LE(a, b) CHECK_IMPL((a), <=, (b))
#define CHECK_GT(a, b) CHECK_IMPL((a), >, (b))
#define CHECK_GE(a, b) CHECK_IMPL((a), >=, (b))
#if SANITIZER_DEBUG
#define DCHECK(a) CHECK(a)
#define DCHECK_EQ(a, b) CHECK_EQ(a, b)
#define DCHECK_NE(a, b) CHECK_NE(a, b)
#define DCHECK_LT(a, b) CHECK_LT(a, b)
#define DCHECK_LE(a, b) CHECK_LE(a, b)
#define DCHECK_GT(a, b) CHECK_GT(a, b)
#define DCHECK_GE(a, b) CHECK_GE(a, b)
#else
#define DCHECK(a)
#define DCHECK_EQ(a, b)
#define DCHECK_NE(a, b)
#define DCHECK_LT(a, b)
#define DCHECK_LE(a, b)
#define DCHECK_GT(a, b)
#define DCHECK_GE(a, b)
#endif
#define UNREACHABLE(msg) do { \
CHECK(0 && msg); \
Die(); \
} while (0)
#define UNIMPLEMENTED() UNREACHABLE("unimplemented")
#define COMPILER_CHECK(pred) IMPL_COMPILER_ASSERT(pred, __LINE__)
#define ARRAY_SIZE(a) (sizeof(a)/sizeof((a)[0]))
#define IMPL_PASTE(a, b) a##b
#define IMPL_COMPILER_ASSERT(pred, line) \
typedef char IMPL_PASTE(assertion_failed_##_, line)[2*(int)(pred)-1]
// Limits for integral types. We have to redefine it in case we don't
// have stdint.h (like in Visual Studio 9).
#undef __INT64_C
#undef __UINT64_C
#if SANITIZER_WORDSIZE == 64
# define __INT64_C(c) c ## L
# define __UINT64_C(c) c ## UL
#else
# define __INT64_C(c) c ## LL
# define __UINT64_C(c) c ## ULL
#endif // SANITIZER_WORDSIZE == 64
#undef INT32_MIN
#define INT32_MIN (-2147483647-1)
#undef INT32_MAX
#define INT32_MAX (2147483647)
#undef UINT32_MAX
#define UINT32_MAX (4294967295U)
#undef INT64_MIN
#define INT64_MIN (-__INT64_C(9223372036854775807)-1)
#undef INT64_MAX
#define INT64_MAX (__INT64_C(9223372036854775807))
#undef UINT64_MAX
#define UINT64_MAX (__UINT64_C(18446744073709551615))
enum LinkerInitialized { LINKER_INITIALIZED = 0 };
#if !defined(_MSC_VER) || defined(__clang__)
# define GET_CALLER_PC() (uptr)__builtin_return_address(0)
# define GET_CURRENT_FRAME() (uptr)__builtin_frame_address(0)
#else
extern "C" void* _ReturnAddress(void);
# pragma intrinsic(_ReturnAddress)
# define GET_CALLER_PC() (uptr)_ReturnAddress()
// CaptureStackBackTrace doesn't need to know BP on Windows.
// FIXME: This macro is still used when printing error reports though it's not
// clear if the BP value is needed in the ASan reports on Windows.
# define GET_CURRENT_FRAME() (uptr)0xDEADBEEF
#endif
#define HANDLE_EINTR(res, f) \
{ \
int rverrno; \
do { \
res = (f); \
} while (internal_iserror(res, &rverrno) && rverrno == EINTR); \
}
// Forces the compiler to generate a frame pointer in the function.
#define ENABLE_FRAME_POINTER \
do { \
volatile uptr enable_fp; \
enable_fp = GET_CURRENT_FRAME(); \
(void)enable_fp; \
} while (0)
#endif // SANITIZER_DEFS_H
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