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Use zero-based shadow by default on Android. 

llvm-svn: 157318
This commit is contained in:
Evgeniy Stepanov 2012-05-23 11:52:37 +00:00
parent 617232f32b
commit 8f247016bd
1 changed files with 13 additions and 8 deletions
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21
compiler-rt/lib/asan/asan_mapping.h
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@ -22,15 +22,20 @@
#if ASAN_FLEXIBLE_MAPPING_AND_OFFSET == 1 #if ASAN_FLEXIBLE_MAPPING_AND_OFFSET == 1
extern __attribute__((visibility("default"))) uintptr_t __asan_mapping_scale; extern __attribute__((visibility("default"))) uintptr_t __asan_mapping_scale;
extern __attribute__((visibility("default"))) uintptr_t __asan_mapping_offset; extern __attribute__((visibility("default"))) uintptr_t __asan_mapping_offset;
#define SHADOW_SCALE (__asan_mapping_scale) # define SHADOW_SCALE (__asan_mapping_scale)
#define SHADOW_OFFSET (__asan_mapping_offset) # define SHADOW_OFFSET (__asan_mapping_offset)
#else #else
#define SHADOW_SCALE (3) # ifdef ANDROID
#if __WORDSIZE == 32 # define SHADOW_SCALE (3)
#define SHADOW_OFFSET (1 << 29) # define SHADOW_OFFSET (0)
#else # else
#define SHADOW_OFFSET (1ULL << 44) # define SHADOW_SCALE (3)
#endif # if __WORDSIZE == 32
# define SHADOW_OFFSET (1 << 29)
# else
# define SHADOW_OFFSET (1ULL << 44)
# endif
# endif
#endif // ASAN_FLEXIBLE_MAPPING_AND_OFFSET #endif // ASAN_FLEXIBLE_MAPPING_AND_OFFSET
#define SHADOW_GRANULARITY (1ULL << SHADOW_SCALE) #define SHADOW_GRANULARITY (1ULL << SHADOW_SCALE)