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Code Issues Releases Wiki Activity

Adjust likelytrash action to account for STORE based INDIRECTs

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This commit is contained in:
caheckman 2019-06-28 18:11:01 -04:00
parent feb2e6887b
commit 29f207400d
1 changed files with 13 additions and 1 deletions
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14
Ghidra/Features/Decompiler/src/decompile/cpp/coreaction.cc
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@ -1716,7 +1716,13 @@ uint4 ActionLikelyTrash::countMarks(PcodeOp *op)
res += 1;
break;
}
if (!vn->isWritten()||(vn->getDef()->code()!=CPUI_INDIRECT)) // Chain up through INDIRECTs
if (!vn->isWritten()) break;
PcodeOp *defOp = vn->getDef();
if (defOp == op) { // We have looped all the way around
res += 1;
break;
}
else if (defOp->code() != CPUI_INDIRECT) // Chain up through INDIRECTs
break;
vn = vn->getDef()->getIn(0);
}
@ -1763,6 +1769,12 @@ bool ActionLikelyTrash::traceTrash(Varnode *vn,vector<PcodeOp *> &indlist)
case CPUI_INDIRECT:
if (outvn->isPersist())
istrash = false;
else if (op->isIndirectStore()) {
if (!outvn->isMark()) {
outvn->setMark();
markedlist.push_back(outvn);
}
}
else
indlist.push_back(op);
break;