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Code Issues Releases Wiki Activity

Treat STORE based INDIRECT as artificial

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This commit is contained in:
caheckman 2019-06-28 16:27:21 -04:00
parent a4856b9af0
commit feb2e6887b
1 changed files with 9 additions and 2 deletions
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11
Ghidra/Features/Decompiler/src/decompile/cpp/heritage.cc
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@ -487,8 +487,9 @@ void Heritage::findAddressForces(vector<PcodeOp *> &copySinks,vector<PcodeOp *>
if (newOp->isMark()) continue; // Already visited this op
newOp->setMark();
OpCode opc = newOp->code();
bool isArtificial = (opc == CPUI_COPY || opc == CPUI_MULTIEQUAL);
if (isArtificial) {
bool isArtificial = false;
if (opc == CPUI_COPY || opc == CPUI_MULTIEQUAL) {
isArtificial = true;
int4 maxInNew = newOp->numInput();
for(int4 j=0;j<maxInNew;++j) {
Varnode *inVn = newOp->getIn(j);
@ -498,6 +499,12 @@ void Heritage::findAddressForces(vector<PcodeOp *> &copySinks,vector<PcodeOp *>
}
}
}
else if (opc == CPUI_INDIRECT && newOp->isIndirectStore()) {
// An INDIRECT can be considered artificial if it is caused by a STORE
Varnode *inVn = newOp->getIn(0);
if (addr == inVn->getAddr())
isArtificial = true;
}
if (isArtificial)
copySinks.push_back(newOp);
else