#include "llvm/ADT/StringExtras.h"
#include "llvm/Analysis/ValueTracking.h"
#include "llvm/IR/Dominators.h"
+#include "llvm/IR/DebugInfo.h"
#include "llvm/IR/IRBuilder.h"
#include "llvm/IR/InlineAsm.h"
#include "llvm/IR/InstVisitor.h"
std::unique_ptr<SpecialCaseList> SCL;
public:
- DFSanABIList(std::unique_ptr<SpecialCaseList> SCL) : SCL(std::move(SCL)) {}
+ DFSanABIList(std::unique_ptr<SpecialCaseList> SCL) : SCL(std::move(SCL)) {}
/// Returns whether either this function or its source file are listed in the
/// given category.
DFSanABIList ABIList;
DenseMap<Value *, Function *> UnwrappedFnMap;
AttributeSet ReadOnlyNoneAttrs;
+ DenseMap<const Function *, DISubprogram> FunctionDIs;
Value *getShadowAddress(Value *Addr, Instruction *Pos);
bool isInstrumented(const Function *F);
}
FunctionType *DataFlowSanitizer::getCustomFunctionType(FunctionType *T) {
- assert(!T->isVarArg());
+ if (T->isVarArg()) {
+ // The labels are passed after all the arguments so there is no need to
+ // adjust the function type.
+ return T;
+ }
+
llvm::SmallVector<Type *, 4> ArgTypes;
for (FunctionType::param_iterator i = T->param_begin(), e = T->param_end();
i != e; ++i) {
return WK_Functional;
if (ABIList.isIn(*F, "discard"))
return WK_Discard;
- if (ABIList.isIn(*F, "custom") && !F->isVarArg())
+ if (ABIList.isIn(*F, "custom"))
return WK_Custom;
return WK_Warning;
if (ABIList.isIn(M, "skip"))
return false;
+ FunctionDIs = makeSubprogramMap(M);
+
if (!GetArgTLSPtr) {
Type *ArgTLSTy = ArrayType::get(ShadowTy, 64);
ArgTLS = Mod->getOrInsertGlobal("__dfsan_arg_tls", ArgTLSTy);
} else {
addGlobalNamePrefix(&F);
}
- // Hopefully, nobody will try to indirectly call a vararg
- // function... yet.
- } else if (FT->isVarArg()) {
- UnwrappedFnMap[&F] = &F;
- *i = nullptr;
} else if (!IsZeroArgsVoidRet || getWrapperKind(&F) == WK_Custom) {
// Build a wrapper function for F. The wrapper simply calls F, and is
// added to FnsToInstrument so that any instrumentation according to its
Value *WrappedFnCst =
ConstantExpr::getBitCast(NewF, PointerType::getUnqual(FT));
F.replaceAllUsesWith(WrappedFnCst);
+
+ // Patch the pointer to LLVM function in debug info descriptor.
+ auto DI = FunctionDIs.find(&F);
+ if (DI != FunctionDIs.end())
+ DI->second.replaceFunction(&F);
+
UnwrappedFnMap[WrappedFnCst] = &F;
*i = NewF;
i = FnsToInstrument.begin() + N;
e = FnsToInstrument.begin() + Count;
}
+ // Hopefully, nobody will try to indirectly call a vararg
+ // function... yet.
+ } else if (FT->isVarArg()) {
+ UnwrappedFnMap[&F] = &F;
+ *i = nullptr;
}
}
return;
}
+ assert(!(cast<FunctionType>(
+ CS.getCalledValue()->getType()->getPointerElementType())->isVarArg() &&
+ dyn_cast<InvokeInst>(CS.getInstruction())));
+
IRBuilder<> IRB(CS.getInstruction());
DenseMap<Value *, Function *>::iterator i =
std::vector<Value *> Args;
CallSite::arg_iterator i = CS.arg_begin();
- for (unsigned n = FT->getNumParams(); n != 0; ++i, --n) {
+ for (unsigned n = CS.arg_size(); n != 0; ++i, --n) {
Type *T = (*i)->getType();
FunctionType *ParamFT;
if (isa<PointerType>(T) &&
}
i = CS.arg_begin();
- for (unsigned n = FT->getNumParams(); n != 0; ++i, --n)
+ for (unsigned n = CS.arg_size(); n != 0; ++i, --n)
Args.push_back(DFSF.getShadow(*i));
if (!FT->getReturnType()->isVoidTy()) {