diff options
Diffstat (limited to 'compiler-rt/lib/msan/msan.h')
| -rw-r--r-- | compiler-rt/lib/msan/msan.h | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/compiler-rt/lib/msan/msan.h b/compiler-rt/lib/msan/msan.h index 30efce94af54..1a4cc8c0c975 100644 --- a/compiler-rt/lib/msan/msan.h +++ b/compiler-rt/lib/msan/msan.h @@ -195,6 +195,27 @@ const MappingDesc kMemoryLayout[] = { ((((uptr)(mem)) & ~0xC00000000000ULL) + 0x080000000000ULL) #define SHADOW_TO_ORIGIN(shadow) (((uptr)(shadow)) + 0x140000000000ULL) +#elif SANITIZER_FREEBSD && defined(__aarch64__) + +// Low memory: main binary, MAP_32BIT mappings and modules +// High memory: heap, modules and main thread stack +const MappingDesc kMemoryLayout[] = { + {0x000000000000ULL, 0x020000000000ULL, MappingDesc::APP, "low memory"}, + {0x020000000000ULL, 0x200000000000ULL, MappingDesc::INVALID, "invalid"}, + {0x200000000000ULL, 0x620000000000ULL, MappingDesc::SHADOW, "shadow"}, + {0x620000000000ULL, 0x700000000000ULL, MappingDesc::INVALID, "invalid"}, + {0x700000000000ULL, 0xb20000000000ULL, MappingDesc::ORIGIN, "origin"}, + {0xb20000000000ULL, 0xc00000000000ULL, MappingDesc::INVALID, "invalid"}, + {0xc00000000000ULL, 0x1000000000000ULL, MappingDesc::APP, "high memory"}}; + +// Maps low and high app ranges to contiguous space with zero base: +// Low: 0000 0000 0000 - 01ff ffff ffff -> 4000 0000 0000 - 41ff ffff ffff +// High: c000 0000 0000 - ffff ffff ffff -> 0000 0000 0000 - 3fff ffff ffff +#define LINEARIZE_MEM(mem) \ + (((uptr)(mem) & ~0x1800000000000ULL) ^ 0x400000000000ULL) +#define MEM_TO_SHADOW(mem) (LINEARIZE_MEM((mem)) + 0x200000000000ULL) +#define SHADOW_TO_ORIGIN(shadow) (((uptr)(shadow)) + 0x500000000000) + #elif SANITIZER_FREEBSD && SANITIZER_WORDSIZE == 64 // Low memory: main binary, MAP_32BIT mappings and modules |