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Decompiler for-loops

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This commit is contained in:
caheckman 2020-07-16 16:43:40 -04:00
parent 1539318b59
commit b2bc1eb019
25 changed files with 726 additions and 68 deletions
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57
Ghidra/Features/Decompiler/src/decompile/cpp/printc.cc
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@ -2629,11 +2629,68 @@ void PrintC::emitBlockIf(const BlockIf *bl)
popMod();
}
/// Print the loop using the keyword \e for, followed by a semicolon separated
/// - Initializer statement
/// - Condition statment
/// - Iterate statement
///
/// Then print the body of the loop
void PrintC::emitForLoop(const BlockWhileDo *bl)
{
const PcodeOp *op;
int4 indent;
pushMod();
unsetMod(no_branch|only_branch);
emitAnyLabelStatement(bl);
emit->tagLine();
op = bl->getBlock(0)->lastOp();
emit->tagOp("for",EmitXml::keyword_color,op);
emit->spaces(1);
int4 id1 = emit->openParen('(');
pushMod();
setMod(comma_separate);
op = bl->getInitializeOp(); // Emit the (optional) initializer statement
if (op != (PcodeOp *)0) {
int4 id3 = emit->beginStatement(op);
emitExpression(op);
emit->endStatement(id3);
}
emit->print(";");
emit->spaces(1);
bl->getBlock(0)->emit(this); // Emit the conditional statement
emit->print(";");
emit->spaces(1);
op = bl->getIterateOp(); // Emit the iterator statement
int4 id4 = emit->beginStatement(op);
emitExpression(op);
emit->endStatement(id4);
popMod();
emit->closeParen(')',id1);
emit->spaces(1);
indent = emit->startIndent();
emit->print("{");
setMod(no_branch); // Dont print goto at bottom of clause
int4 id2 = emit->beginBlock(bl->getBlock(1));
bl->getBlock(1)->emit(this);
emit->endBlock(id2);
emit->stopIndent(indent);
emit->tagLine();
emit->print("}");
popMod();
}
void PrintC::emitBlockWhileDo(const BlockWhileDo *bl)
{
const PcodeOp *op;
int4 indent;
if (bl->getIterateOp() != (PcodeOp *)0) {
emitForLoop(bl);
return;
}
// whiledo block NEVER prints final branch
pushMod();
unsetMod(no_branch|only_branch);