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Decompiler window integer conversions

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This commit is contained in:
caheckman 2021-06-23 15:18:34 -04:00
parent 11149b9ef2
commit 1391e83ce9
35 changed files with 2430 additions and 281 deletions
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13
Ghidra/Features/Decompiler/src/decompile/cpp/ruleaction.cc
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@ -2464,6 +2464,7 @@ int4 RuleZextEliminate::applyOp(PcodeOp *op,Funcdata &data)
val = vn2->getOffset();
if ((val>>(8*smallsize))==0) { // Is zero extension unnecessary
newvn = data.newConstant(smallsize,val);
newvn->copySymbolIfValid(vn2);
data.opSetInput(op,zext->getIn(0),zextslot);
data.opSetInput(op,newvn,otherslot);
return 1;
@ -3696,7 +3697,9 @@ int4 RuleXorCollapse::applyOp(PcodeOp *op,Funcdata &data)
}
coeff2 = xorvn->getOffset();
if (coeff2 == 0) return 0;
data.opSetInput(op,data.newConstant(op->getIn(1)->getSize(),coeff1^coeff2),1);
Varnode *constvn = data.newConstant(op->getIn(1)->getSize(),coeff1^coeff2);
constvn->copySymbolIfValid(xorvn);
data.opSetInput(op,constvn,1);
data.opSetInput(op,xorop->getIn(0),0);
return 1;
}
@ -3757,6 +3760,10 @@ int4 RuleAddMultCollapse::applyOp(PcodeOp *op,Funcdata &data)
uintb val = op->getOpcode()->evaluateBinary(c[0]->getSize(),c[0]->getSize(),c[0]->getOffset(),c[1]->getOffset());
newvn = data.newConstant(c[0]->getSize(),val);
if (c[0]->getSymbolEntry() != (SymbolEntry *)0)
newvn->copySymbolIfValid(c[0]);
else if (c[1]->getSymbolEntry() != (SymbolEntry *)0)
newvn->copySymbolIfValid(c[1]);
PcodeOp *newop = data.newOp(2,op->getAddr());
data.opSetOpcode(newop,CPUI_INT_ADD);
Varnode *newout = data.newUniqueOut(c[0]->getSize(),newop);
@ -3774,6 +3781,10 @@ int4 RuleAddMultCollapse::applyOp(PcodeOp *op,Funcdata &data)
uintb val = op->getOpcode()->evaluateBinary(c[0]->getSize(),c[0]->getSize(),c[0]->getOffset(),c[1]->getOffset());
newvn = data.newConstant(c[0]->getSize(),val);
if (c[0]->getSymbolEntry() != (SymbolEntry *)0)
newvn->copySymbolIfValid(c[0]);
else if (c[1]->getSymbolEntry() != (SymbolEntry *)0)
newvn->copySymbolIfValid(c[1]);
data.opSetInput(op,newvn,1); // Replace c[0] with c[0]+c[1] or c[0]*c[1]
data.opSetInput(op,sub2,0); // Replace sub with sub2
return 1;