diff options
Diffstat (limited to 'lib/asan/asan_internal.h')
| -rw-r--r-- | lib/asan/asan_internal.h | 81 |
1 files changed, 32 insertions, 49 deletions
diff --git a/lib/asan/asan_internal.h b/lib/asan/asan_internal.h index 8c1f32028f2c..5d3bffa814da 100644 --- a/lib/asan/asan_internal.h +++ b/lib/asan/asan_internal.h @@ -17,17 +17,13 @@ #include "asan_flags.h" #include "sanitizer_common/sanitizer_common.h" #include "sanitizer_common/sanitizer_internal_defs.h" +#include "sanitizer_common/sanitizer_stacktrace.h" #include "sanitizer_common/sanitizer_libc.h" #if !defined(__linux__) && !defined(__APPLE__) && !defined(_WIN32) # error "This operating system is not supported by AddressSanitizer" #endif -#if defined(_WIN32) -extern "C" void* _ReturnAddress(void); -# pragma intrinsic(_ReturnAddress) -#endif // defined(_WIN32) - #define ASAN_DEFAULT_FAILURE_EXITCODE 1 #if defined(__linux__) @@ -48,6 +44,13 @@ extern "C" void* _ReturnAddress(void); # define ASAN_WINDOWS 0 #endif +#if defined(__ANDROID__) || defined(ANDROID) +# define ASAN_ANDROID 1 +#else +# define ASAN_ANDROID 0 +#endif + + #define ASAN_POSIX (ASAN_LINUX || ASAN_MAC) #if __has_feature(address_sanitizer) @@ -59,7 +62,11 @@ extern "C" void* _ReturnAddress(void); // If set, asan will install its own SEGV signal handler. #ifndef ASAN_NEEDS_SEGV -# define ASAN_NEEDS_SEGV 1 +# if ASAN_ANDROID == 1 +# define ASAN_NEEDS_SEGV 0 +# else +# define ASAN_NEEDS_SEGV 1 +# endif #endif // If set, asan will intercept C++ exception api call(s). @@ -76,7 +83,11 @@ extern "C" void* _ReturnAddress(void); // If set, values like allocator chunk size, as well as defaults for some flags // will be changed towards less memory overhead. #ifndef ASAN_LOW_MEMORY -# define ASAN_LOW_MEMORY 0 +#if SANITIZER_WORDSIZE == 32 +# define ASAN_LOW_MEMORY 1 +#else +# define ASAN_LOW_MEMORY 0 +# endif #endif // All internal functions in asan reside inside the __asan namespace @@ -86,14 +97,11 @@ extern "C" void* _ReturnAddress(void); namespace __asan { class AsanThread; -struct AsanStackTrace; +using __sanitizer::StackTrace; // asan_rtl.cc void NORETURN ShowStatsAndAbort(); -// asan_globals.cc -bool DescribeAddrIfGlobal(uptr addr); - void ReplaceOperatorsNewAndDelete(); // asan_malloc_linux.cc / asan_malloc_mac.cc void ReplaceSystemMalloc(); @@ -103,10 +111,12 @@ void *AsanDoesNotSupportStaticLinkage(); void GetPcSpBp(void *context, uptr *pc, uptr *sp, uptr *bp); +void MaybeReexec(); bool AsanInterceptsSignal(int signum); void SetAlternateSignalStack(); void UnsetAlternateSignalStack(); void InstallSignalHandlers(); +void ReadContextStack(void *context, uptr *stack, uptr *ssize); void AsanPlatformThreadInit(); // Wrapper for TLS/TSD. @@ -115,9 +125,6 @@ void *AsanTSDGet(); void AsanTSDSet(void *tsd); void AppendToErrorMessageBuffer(const char *buffer); -// asan_printf.cc -void AsanPrintf(const char *format, ...); -void AsanReport(const char *format, ...); // asan_poisoning.cc // Poisons the shadow memory for "size" bytes starting from "addr". @@ -138,33 +145,20 @@ bool PlatformHasDifferentMemcpyAndMemmove(); # define PLATFORM_HAS_DIFFERENT_MEMCPY_AND_MEMMOVE true #endif // __APPLE__ +// Add convenient macro for interface functions that may be represented as +// weak hooks. +#define ASAN_MALLOC_HOOK(ptr, size) \ + if (&__asan_malloc_hook) __asan_malloc_hook(ptr, size) +#define ASAN_FREE_HOOK(ptr) \ + if (&__asan_free_hook) __asan_free_hook(ptr) +#define ASAN_ON_ERROR() \ + if (&__asan_on_error) __asan_on_error() + extern int asan_inited; // Used to avoid infinite recursion in __asan_init(). extern bool asan_init_is_running; extern void (*death_callback)(void); -enum LinkerInitialized { LINKER_INITIALIZED = 0 }; - -#define ASAN_ARRAY_SIZE(a) (sizeof(a)/sizeof((a)[0])) - -#if !defined(_WIN32) || defined(__clang__) -# define GET_CALLER_PC() (uptr)__builtin_return_address(0) -# define GET_CURRENT_FRAME() (uptr)__builtin_frame_address(0) -#else -# 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 - -#ifdef _WIN32 -# ifndef ASAN_USE_EXTERNAL_SYMBOLIZER -# define ASAN_USE_EXTERNAL_SYMBOLIZER __asan_WinSymbolize -bool __asan_WinSymbolize(const void *addr, char *out_buffer, int buffer_size); -# endif -#endif // _WIN32 - // These magic values are written to shadow for better error reporting. const int kAsanHeapLeftRedzoneMagic = 0xfa; const int kAsanHeapRightRedzoneMagic = 0xfb; @@ -174,26 +168,15 @@ const int kAsanStackMidRedzoneMagic = 0xf2; const int kAsanStackRightRedzoneMagic = 0xf3; const int kAsanStackPartialRedzoneMagic = 0xf4; const int kAsanStackAfterReturnMagic = 0xf5; +const int kAsanInitializationOrderMagic = 0xf6; const int kAsanUserPoisonedMemoryMagic = 0xf7; +const int kAsanStackUseAfterScopeMagic = 0xf8; const int kAsanGlobalRedzoneMagic = 0xf9; const int kAsanInternalHeapMagic = 0xfe; static const uptr kCurrentStackFrameMagic = 0x41B58AB3; static const uptr kRetiredStackFrameMagic = 0x45E0360E; -// -------------------------- LowLevelAllocator ----- {{{1 -// A simple low-level memory allocator for internal use. -class LowLevelAllocator { - public: - explicit LowLevelAllocator(LinkerInitialized) {} - // 'size' must be a power of two. - // Requires an external lock. - void *Allocate(uptr size); - private: - char *allocated_end_; - char *allocated_current_; -}; - } // namespace __asan #endif // ASAN_INTERNAL_H |