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Code Issues Releases Wiki Activity

GP-2568 InheritResolution after insertPtrsubZero

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This commit is contained in:
caheckman 2022-09-16 17:50:30 -04:00
parent 742e69eb31
commit 45347bff87
5 changed files with 26 additions and 38 deletions
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14
Ghidra/Features/Decompiler/src/decompile/cpp/ruleaction.cc
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@ -6156,7 +6156,8 @@ void AddTreeState::buildTree(void)
// Create PTRADD portion of operation
if (multNode != (Varnode *)0) {
newop = data.newOpBefore(baseOp,CPUI_PTRADD,ptr,multNode,data.newConstant(ptrsize,size));
data.inheritReadResolution(newop, 0, baseOp, baseSlot);
if (ptr->getType()->needsResolution())
data.inheritResolution(ptr->getType(),newop, 0, baseOp, baseSlot);
multNode = newop->getOut();
}
else
@ -6165,7 +6166,8 @@ void AddTreeState::buildTree(void)
// Create PTRSUB portion of operation
if (isSubtype) {
newop = data.newOpBefore(baseOp,CPUI_PTRSUB,multNode,data.newConstant(ptrsize,offset));
data.inheritReadResolution(newop, 0, baseOp, baseSlot);
if (multNode->getType()->needsResolution())
data.inheritResolution(multNode->getType(),newop, 0, baseOp, baseSlot);
if (size != 0)
newop->setStopTypePropagation();
multNode = newop->getOut();
@ -6340,7 +6342,8 @@ int4 RuleStructOffset0::applyOp(PcodeOp *op,Funcdata &data)
else
return 0;
Datatype *ct = op->getIn(1)->getTypeReadFacing(op);
Varnode *ptrVn = op->getIn(1);
Datatype *ct = ptrVn->getTypeReadFacing(op);
if (ct->getMetatype() != TYPE_PTR) return 0;
Datatype *baseType = ((TypePointer *)ct)->getPtrTo();
uintb offset = 0;
@ -6378,8 +6381,9 @@ int4 RuleStructOffset0::applyOp(PcodeOp *op,Funcdata &data)
else
return 0;
PcodeOp *newop = data.newOpBefore(op,CPUI_PTRSUB,op->getIn(1),data.newConstant(op->getIn(1)->getSize(),0));
data.inheritReadResolution(newop, 0, op, 1);
PcodeOp *newop = data.newOpBefore(op,CPUI_PTRSUB,ptrVn,data.newConstant(ptrVn->getSize(),0));
if (ptrVn->getType()->needsResolution())
data.inheritResolution(ptrVn->getType(),newop, 0, op, 1);
newop->setStopTypePropagation();
data.opSetInput(op,newop->getOut(),1);
return 1;