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[DFSAN][MIPS][LLVM] Defining ShadowPtrMask variable for MIPS64

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Patch by Kumar Sukhani!

corresponding compiler-rt patch: http://reviews.llvm.org/D6437
clang patch: http://reviews.llvm.org/D6147

Differential Revision: http://reviews.llvm.org/D6459

llvm-svn: 223516
This commit is contained in:
Peter Collingbourne 2014-12-05 21:22:32 +00:00
parent 4f286f5f23
commit 58b6120d03
1 changed files with 12 additions and 1 deletions
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13
lib/Transforms/Instrumentation/DataFlowSanitizer.cpp
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@ -49,6 +49,7 @@
#include "llvm/ADT/DenseSet.h" #include "llvm/ADT/DenseSet.h"
#include "llvm/ADT/DepthFirstIterator.h" #include "llvm/ADT/DepthFirstIterator.h"
#include "llvm/ADT/StringExtras.h" #include "llvm/ADT/StringExtras.h"
#include "llvm/ADT/Triple.h"
#include "llvm/Analysis/ValueTracking.h" #include "llvm/Analysis/ValueTracking.h"
#include "llvm/IR/Dominators.h" #include "llvm/IR/Dominators.h"
#include "llvm/IR/DebugInfo.h" #include "llvm/IR/DebugInfo.h"
@ -414,6 +415,11 @@ FunctionType *DataFlowSanitizer::getCustomFunctionType(FunctionType *T) {
} }
bool DataFlowSanitizer::doInitialization(Module &M) { bool DataFlowSanitizer::doInitialization(Module &M) {
llvm::Triple TargetTriple(M.getTargetTriple());
bool IsX86_64 = TargetTriple.getArch() == llvm::Triple::x86_64;
bool IsMIPS64 = TargetTriple.getArch() == llvm::Triple::mips64 ||
TargetTriple.getArch() == llvm::Triple::mips64el;
DataLayoutPass *DLP = getAnalysisIfAvailable<DataLayoutPass>(); DataLayoutPass *DLP = getAnalysisIfAvailable<DataLayoutPass>();
if (!DLP) if (!DLP)
report_fatal_error("data layout missing"); report_fatal_error("data layout missing");
@ -425,8 +431,13 @@ bool DataFlowSanitizer::doInitialization(Module &M) {
ShadowPtrTy = PointerType::getUnqual(ShadowTy); ShadowPtrTy = PointerType::getUnqual(ShadowTy);
IntptrTy = DL->getIntPtrType(*Ctx); IntptrTy = DL->getIntPtrType(*Ctx);
ZeroShadow = ConstantInt::getSigned(ShadowTy, 0); ZeroShadow = ConstantInt::getSigned(ShadowTy, 0);
ShadowPtrMask = ConstantInt::getSigned(IntptrTy, ~0x700000000000LL);
ShadowPtrMul = ConstantInt::getSigned(IntptrTy, ShadowWidth / 8); ShadowPtrMul = ConstantInt::getSigned(IntptrTy, ShadowWidth / 8);
if (IsX86_64)
ShadowPtrMask = ConstantInt::getSigned(IntptrTy, ~0x700000000000LL);
else if (IsMIPS64)
ShadowPtrMask = ConstantInt::getSigned(IntptrTy, ~0xF000000000LL);
else
report_fatal_error("unsupported triple");
Type *DFSanUnionArgs[2] = { ShadowTy, ShadowTy }; Type *DFSanUnionArgs[2] = { ShadowTy, ShadowTy };
DFSanUnionFnTy = DFSanUnionFnTy =