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Extending incidental copy

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This commit is contained in:
caheckman 2019-11-26 11:53:43 -05:00
parent 4fc507f711
commit 00ac31c788
8 changed files with 39 additions and 12 deletions
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18
Ghidra/Features/Decompiler/src/decompile/cpp/op.cc
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@ -765,6 +765,24 @@ void PcodeOpBank::moveSequenceDead(PcodeOp *firstop,PcodeOp *lastop,PcodeOp *pre
deadlist.splice(previter,deadlist,firstop->insertiter,enditer);
}
/// Incidental COPYs are not considered active use of parameter passing Varnodes by
/// parameter analysis algorithms.
/// \param firstop is the start of the range of incidental COPY ops
/// \param lastop is the end of the range of incidental COPY ops
void PcodeOpBank::markIncidentalCopy(PcodeOp *firstop,PcodeOp *lastop)
{
list<PcodeOp *>::iterator iter = firstop->insertiter;
list<PcodeOp *>::iterator enditer = lastop->insertiter;
++enditer;
while(iter != enditer) {
PcodeOp *op = *iter;
++iter;
if (op->code() == CPUI_COPY)
op->setAdditionalFlag(PcodeOp::incidental_copy);
}
}
/// Find the first PcodeOp at or after the given Address assuming they have not
/// yet been broken up into basic blocks. Take into account delay slots.
/// \param addr is the given Address