diff options
Diffstat (limited to 'lib/asan/asan_mapping.h')
| -rw-r--r-- | lib/asan/asan_mapping.h | 34 |
1 files changed, 24 insertions, 10 deletions
diff --git a/lib/asan/asan_mapping.h b/lib/asan/asan_mapping.h index f04629222419..1fecaeb35e1e 100644 --- a/lib/asan/asan_mapping.h +++ b/lib/asan/asan_mapping.h @@ -49,6 +49,20 @@ // || `[0x24000000, 0x27ffffff]` || ShadowGap || // || `[0x20000000, 0x23ffffff]` || LowShadow || // || `[0x00000000, 0x1fffffff]` || LowMem || +// +// Default Linux/MIPS mapping: +// || `[0x2aaa8000, 0xffffffff]` || HighMem || +// || `[0x0fffd000, 0x2aaa7fff]` || HighShadow || +// || `[0x0bffd000, 0x0fffcfff]` || ShadowGap || +// || `[0x0aaa8000, 0x0bffcfff]` || LowShadow || +// || `[0x00000000, 0x0aaa7fff]` || LowMem || + +static const u64 kDefaultShadowScale = 3; +static const u64 kDefaultShadowOffset32 = 1ULL << 29; +static const u64 kDefaultShadowOffset64 = 1ULL << 44; +static const u64 kDefaultShort64bitShadowOffset = 0x7FFF8000; // < 2G. +static const u64 kPPC64_ShadowOffset64 = 1ULL << 41; +static const u64 kMIPS32_ShadowOffset32 = 0x0aaa8000; #if ASAN_FLEXIBLE_MAPPING_AND_OFFSET == 1 extern SANITIZER_INTERFACE_ATTRIBUTE uptr __asan_mapping_scale; @@ -56,22 +70,23 @@ extern SANITIZER_INTERFACE_ATTRIBUTE uptr __asan_mapping_offset; # define SHADOW_SCALE (__asan_mapping_scale) # define SHADOW_OFFSET (__asan_mapping_offset) #else +# define SHADOW_SCALE kDefaultShadowScale # if SANITIZER_ANDROID -# define SHADOW_SCALE (3) # define SHADOW_OFFSET (0) # else -# define SHADOW_SCALE (3) # if SANITIZER_WORDSIZE == 32 -# define SHADOW_OFFSET (1 << 29) +# if defined(__mips__) +# define SHADOW_OFFSET kMIPS32_ShadowOffset32 +# else +# define SHADOW_OFFSET kDefaultShadowOffset32 +# endif # else # if defined(__powerpc64__) -# define SHADOW_OFFSET (1ULL << 41) +# define SHADOW_OFFSET kPPC64_ShadowOffset64 +# elif SANITIZER_MAC +# define SHADOW_OFFSET kDefaultShadowOffset64 # else -# if SANITIZER_MAC -# define SHADOW_OFFSET (1ULL << 44) -# else -# define SHADOW_OFFSET 0x7fff8000ULL -# endif +# define SHADOW_OFFSET kDefaultShort64bitShadowOffset # endif # endif # endif @@ -133,7 +148,6 @@ static uptr kHighMemEnd = 0x7fffffffffffULL; static uptr kMidMemBeg = 0x3000000000ULL; static uptr kMidMemEnd = 0x4fffffffffULL; #else -SANITIZER_INTERFACE_ATTRIBUTE extern uptr kHighMemEnd, kMidMemBeg, kMidMemEnd; // Initialized in __asan_init. #endif |