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GP-1954 Refactor characterizeAsParam, AncestorRealistic adjustments

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This commit is contained in:
caheckman 2022-04-25 16:37:41 -04:00
parent 91eb96f109
commit b7955f2a79
15 changed files with 711 additions and 191 deletions
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24
Ghidra/Features/Decompiler/src/decompile/cpp/ruleaction.cc
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@ -9357,20 +9357,22 @@ int4 RulePiecePathology::applyOp(PcodeOp *op,Funcdata &data)
if (!isPathology(subOp->getIn(0),data)) return 0;
}
else if (opc == CPUI_INDIRECT) {
if (!subOp->isIndirectCreation()) return 0;
Varnode *retVn = op->getIn(1);
if (!retVn->isWritten()) return 0;
PcodeOp *callOp = retVn->getDef();
if (!callOp->isCall()) return 0;
FuncCallSpecs *fc = data.getCallSpecs(callOp);
if (fc == (FuncCallSpecs *)0) return 0;
if (!fc->isOutputLocked()) return 0;
Address addr = retVn->getAddr();
if (!subOp->isIndirectCreation()) return 0; // Indirect concatenation
Varnode *lsbVn = op->getIn(1);
if (!lsbVn->isWritten()) return 0;
PcodeOp *lsbOp = lsbVn->getDef();
if ((lsbOp->getEvalType() & (PcodeOp::binary | PcodeOp::unary)) == 0) { // from either a unary/binary operation
if (!lsbOp->isCall()) return 0; // or a CALL
FuncCallSpecs *fc = data.getCallSpecs(lsbOp);
if (fc == (FuncCallSpecs *)0) return 0;
if (!fc->isOutputLocked()) return 0; // with a locked output
}
Address addr = lsbVn->getAddr();
if (addr.getSpace()->isBigEndian())
addr = addr - vn->getSize();
else
addr = addr + retVn->getSize();
if (addr != vn->getAddr()) return 0;
addr = addr + lsbVn->getSize();
if (addr != vn->getAddr()) return 0; // into a contiguous register
}
else
return 0;