diff options
Diffstat (limited to 'llvm/lib/Transforms/Instrumentation/DataFlowSanitizer.cpp')
| -rw-r--r-- | llvm/lib/Transforms/Instrumentation/DataFlowSanitizer.cpp | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/llvm/lib/Transforms/Instrumentation/DataFlowSanitizer.cpp b/llvm/lib/Transforms/Instrumentation/DataFlowSanitizer.cpp index 8344e08..c613f25 100644 --- a/llvm/lib/Transforms/Instrumentation/DataFlowSanitizer.cpp +++ b/llvm/lib/Transforms/Instrumentation/DataFlowSanitizer.cpp @@ -72,6 +72,16 @@ using namespace llvm; +// VMA size definition for architecture that support multiple sizes. +// AArch64 has 3 VMA sizes: 39, 42 and 48. +#ifndef SANITIZER_AARCH64_VMA +# define SANITIZER_AARCH64_VMA 39 +#else +# if SANITIZER_AARCH64_VMA != 39 && SANITIZER_AARCH64_VMA != 42 +# error "invalid SANITIZER_AARCH64_VMA size" +# endif +#endif + // The -dfsan-preserve-alignment flag controls whether this pass assumes that // alignment requirements provided by the input IR are correct. For example, // if the input IR contains a load with alignment 8, this flag will cause @@ -437,7 +447,11 @@ bool DataFlowSanitizer::doInitialization(Module &M) { else if (IsMIPS64) ShadowPtrMask = ConstantInt::getSigned(IntptrTy, ~0xF000000000LL); else if (IsAArch64) +#if SANITIZER_AARCH64_VMA == 39 ShadowPtrMask = ConstantInt::getSigned(IntptrTy, ~0x7800000000LL); +#else + ShadowPtrMask = ConstantInt::getSigned(IntptrTy, ~0x3c000000000LL); +#endif else report_fatal_error("unsupported triple"); |