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Adding AArch64 support to ASan instrumentation

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For the time being, it is still hardcoded to support only the 39 VA bits
variant, I plan to work on supporting 42 and 48 VA bits variants, but I
don't have access to such hardware at the moment.

Patch by Chrystophe Lyon.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@227965 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Renato Golin 2015-02-03 11:20:45 +00:00
parent 97494e9718
commit ba4bdb4b1b
1 changed files with 4 additions and 0 deletions
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4
lib/Transforms/Instrumentation/AddressSanitizer.cpp
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@ -65,6 +65,7 @@ static const uint64_t kSmallX86_64ShadowOffset = 0x7FFF8000; // < 2G.
static const uint64_t kPPC64_ShadowOffset64 = 1ULL << 41;
static const uint64_t kMIPS32_ShadowOffset32 = 0x0aaa0000;
static const uint64_t kMIPS64_ShadowOffset64 = 1ULL << 37;
static const uint64_t kAArch64_ShadowOffset64 = 1ULL << 36;
static const uint64_t kFreeBSD_ShadowOffset32 = 1ULL << 30;
static const uint64_t kFreeBSD_ShadowOffset64 = 1ULL << 46;
static const uint64_t kWindowsShadowOffset32 = 3ULL << 28;
@ -308,6 +309,7 @@ static ShadowMapping getShadowMapping(Triple &TargetTriple, int LongSize) {
TargetTriple.getArch() == llvm::Triple::mipsel;
bool IsMIPS64 = TargetTriple.getArch() == llvm::Triple::mips64 ||
TargetTriple.getArch() == llvm::Triple::mips64el;
bool IsAArch64 = TargetTriple.getArch() == llvm::Triple::aarch64;
bool IsWindows = TargetTriple.isOSWindows();
ShadowMapping Mapping;
@ -334,6 +336,8 @@ static ShadowMapping getShadowMapping(Triple &TargetTriple, int LongSize) {
Mapping.Offset = kSmallX86_64ShadowOffset;
else if (IsMIPS64)
Mapping.Offset = kMIPS64_ShadowOffset64;
else if (IsAArch64)
Mapping.Offset = kAArch64_ShadowOffset64;
else
Mapping.Offset = kDefaultShadowOffset64;
}