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[asan] insert __asan_loadN/__asan_storeN as out-lined asan checks, llvm part

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206734 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Kostya Serebryany 2014-04-21 07:10:43 +00:00
parent 7d5100d14e
commit 215fc7d998
1 changed files with 15 additions and 3 deletions
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18
lib/Transforms/Instrumentation/AddressSanitizer.cpp
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@ -365,7 +365,8 @@ struct AddressSanitizer : public FunctionPass {
Function *AsanErrorCallback[2][kNumberOfAccessSizes];
Function *AsanMemoryAccessCallback[2][kNumberOfAccessSizes];
// This array is indexed by AccessIsWrite.
Function *AsanErrorCallbackSized[2];
Function *AsanErrorCallbackSized[2],
*AsanMemoryAccessCallbackSized[2];
InlineAsm *EmptyAsm;
SetOfDynamicallyInitializedGlobals DynamicallyInitializedGlobals;
@ -824,8 +825,12 @@ void AddressSanitizer::instrumentAddress(Instruction *OrigIns,
size_t AccessSizeIndex = TypeSizeToSizeIndex(TypeSize);
if (UseCalls) {
IRB.CreateCall(AsanMemoryAccessCallback[IsWrite][AccessSizeIndex],
AddrLong);
if (SizeArgument)
IRB.CreateCall2(AsanMemoryAccessCallbackSized[IsWrite], AddrLong,
SizeArgument);
else
IRB.CreateCall(AsanMemoryAccessCallback[IsWrite][AccessSizeIndex],
AddrLong);
return;
}
@ -1149,6 +1154,13 @@ void AddressSanitizer::initializeCallbacks(Module &M) {
AsanErrorCallbackSized[1] = checkInterfaceFunction(M.getOrInsertFunction(
kAsanReportStoreN, IRB.getVoidTy(), IntptrTy, IntptrTy, NULL));
AsanMemoryAccessCallbackSized[0] = checkInterfaceFunction(
M.getOrInsertFunction(ClMemoryAccessCallbackPrefix + "loadN",
IRB.getVoidTy(), IntptrTy, IntptrTy, NULL));
AsanMemoryAccessCallbackSized[1] = checkInterfaceFunction(
M.getOrInsertFunction(ClMemoryAccessCallbackPrefix + "storeN",
IRB.getVoidTy(), IntptrTy, IntptrTy, NULL));
AsanHandleNoReturnFunc = checkInterfaceFunction(M.getOrInsertFunction(
kAsanHandleNoReturnName, IRB.getVoidTy(), NULL));
AsanCovFunction = checkInterfaceFunction(M.getOrInsertFunction(