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| author | Jay Foad <jay.foad@gmail.com> | 2015-06-25 06:22:31 +0000 |
|---|---|---|
| committer | Jay Foad <jay.foad@gmail.com> | 2015-06-25 06:22:31 +0000 |
| commit | 12a1093f3429816b0f2c4f0aab8fd4842c1d73d3 (patch) | |
| tree | b25e8fab6c0c22b099401605d319d6d89006763d /lib/msan/msan.h | |
| parent | 5d83e5e9184611514c7b038f99b74506515aec52 (diff) | |
Enable memory sanitizer for PPC64
Summary:
This patch adds basic memory sanitizer support for PPC64. PR23219.
I have further patches ready to enable it in LLVM and Clang, and to fix
most of the many failing tests in check-msan.
Reviewers: kcc, willschm, samsonov, wschmidt, eugenis
Reviewed By: eugenis
Subscribers: wschmidt, llvm-commits
Differential Revision: http://reviews.llvm.org/D10648
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@240623 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/msan/msan.h')
| -rw-r--r-- | lib/msan/msan.h | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/lib/msan/msan.h b/lib/msan/msan.h index 0adbeb68f..cd8bc19f5 100644 --- a/lib/msan/msan.h +++ b/lib/msan/msan.h @@ -52,6 +52,25 @@ const MappingDesc kMemoryLayout[] = { #define MEM_TO_SHADOW(mem) (((uptr)(mem)) & ~0x4000000000ULL) #define SHADOW_TO_ORIGIN(shadow) (((uptr)(shadow)) + 0x002000000000) +#elif SANITIZER_LINUX && defined(__powerpc64__) + +const MappingDesc kMemoryLayout[] = { + {0x000000000000ULL, 0x000100000000ULL, MappingDesc::APP, "low memory"}, + {0x000100000000ULL, 0x080000000000ULL, MappingDesc::INVALID, "invalid"}, + {0x080000000000ULL, 0x180100000000ULL, MappingDesc::SHADOW, "shadow"}, + {0x180100000000ULL, 0x1C0000000000ULL, MappingDesc::INVALID, "invalid"}, + {0x1C0000000000ULL, 0x2C0100000000ULL, MappingDesc::ORIGIN, "origin"}, + {0x2C0100000000ULL, 0x300000000000ULL, MappingDesc::INVALID, "invalid"}, + {0x300000000000ULL, 0x400000000000ULL, MappingDesc::APP, "high memory"}}; + +// Maps low and high app ranges to contiguous space with zero base: +// Low: 0000 0000 0000 - 0000 ffff ffff -> 1000 0000 0000 - 1000 ffff ffff +// High: 3000 0000 0000 - 3fff ffff ffff -> 0000 0000 0000 - 0fff ffff ffff +#define LINEARIZE_MEM(mem) \ + (((uptr)(mem) & ~0x200000000000ULL) ^ 0x100000000000ULL) +#define MEM_TO_SHADOW(mem) (LINEARIZE_MEM((mem)) + 0x080000000000ULL) +#define SHADOW_TO_ORIGIN(shadow) (((uptr)(shadow)) + 0x140000000000ULL) + #elif SANITIZER_FREEBSD && SANITIZER_WORDSIZE == 64 // Low memory: main binary, MAP_32BIT mappings and modules |