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Adjustments to default hidden return assignment action

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This commit is contained in:
caheckman 2024-01-09 19:02:28 +00:00
parent 2848eb56a5
commit 548d71007f
7 changed files with 91 additions and 37 deletions
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28
Ghidra/Features/Decompiler/src/decompile/cpp/modelrules.cc
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@ -356,7 +356,7 @@ AssignAction *AssignAction::decodeAction(Decoder &decoder,const ParamListStandar
action = new ConvertToPointer(res);
}
else if (elemId == ELEM_HIDDEN_RETURN) {
action = new HiddenReturnAssign(res,false);
action = new HiddenReturnAssign(res,hiddenret_specialreg);
}
else if (elemId == ELEM_JOIN_PER_PRIMITIVE) {
bool consumeMostSig = false;
@ -721,10 +721,10 @@ void ConsumeAs::decode(Decoder &decoder)
decoder.closeElement(elemId);
}
HiddenReturnAssign::HiddenReturnAssign(const ParamListStandard *res,bool voidLock)
HiddenReturnAssign::HiddenReturnAssign(const ParamListStandard *res,uint4 code)
: AssignAction(res)
{
retCode = voidLock ? hiddenret_specialreg_void : hiddenret_specialreg;
retCode = code;
}
uint4 HiddenReturnAssign::assignAddress(Datatype *dt,const PrototypePieces &proto,int4 pos,TypeFactory &tlist,
@ -736,12 +736,24 @@ uint4 HiddenReturnAssign::assignAddress(Datatype *dt,const PrototypePieces &prot
void HiddenReturnAssign::decode(Decoder &decoder)
{
retCode = hiddenret_specialreg;
uint4 elemId = decoder.openElement(ELEM_HIDDEN_RETURN);
uint4 attribId = decoder.getNextAttributeId();
if (attribId == ATTRIB_VOIDLOCK)
retCode = hiddenret_specialreg_void;
else
retCode = hiddenret_specialreg;
for(;;) {
uint4 attribId = decoder.getNextAttributeId();
if (attribId == ATTRIB_VOIDLOCK)
retCode = hiddenret_specialreg_void;
else if (attribId == ATTRIB_STRATEGY) {
string strategyString = decoder.readString();
if (strategyString == "normalparam")
retCode = hiddenret_ptrparam;
else if (strategyString == "special")
retCode = hiddenret_specialreg;
else
throw DecoderError("Bad <hidden_return> strategy: " + strategyString);
}
else
break;
}
decoder.closeElement(elemId);
}