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Adjust tryCallReturnPull

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This commit is contained in:
caheckman 2020-02-21 11:57:31 -05:00
parent f28c377e9b
commit 6beb631e39
2 changed files with 119 additions and 130 deletions
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15
Ghidra/Features/Decompiler/src/decompile/cpp/subflow.hh
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@ -62,8 +62,16 @@ class SubvariableFlow {
/// \brief Operation with a new logical value as (part of) input, but output Varnode is unchanged
class PatchRecord {
friend class SubvariableFlow;
int4 type; ///< 0=COPY 1=compare 2=call/return/branchind 3=AND/SHIFT
PcodeOp *pullop; ///< Op being affected
/// The possible types of patches on ops being performed
enum patchtype {
copy_patch, ///< Turn op into a COPY of the logical value
compare_patch, ///< Turn compare op inputs into logical values
parameter_patch, ///< Convert a CALL/CALLIND/RETURN/BRANCHIND parameter into logical value
extension_patch, ///< Convert op into something that copies/extends logical value, adding zero bits
returnpush_patch ///< Convert a sub-function return to the logical value
};
patchtype type; ///< The type of \b this patch
PcodeOp *patchOp; ///< Op being affected
ReplaceVarnode *in1; ///< The logical variable input
ReplaceVarnode *in2; ///< (optional second parameter)
int4 slot; ///< slot being affected or other parameter
@ -87,10 +95,9 @@ class SubvariableFlow {
ReplaceVarnode *setReplacement(Varnode *vn,uintb mask,bool &inworklist);
ReplaceOp *createOp(OpCode opc,int4 numparam,ReplaceVarnode *outrvn);
ReplaceOp *createOpDown(OpCode opc,int4 numparam,PcodeOp *op,ReplaceVarnode *inrvn,int4 slot);
void patchIndirect(PcodeOp *newop,PcodeOp *oldop,ReplaceVarnode *out);
bool tryCallPull(PcodeOp *op,ReplaceVarnode *rvn,int4 slot);
bool tryReturnPull(PcodeOp *op,ReplaceVarnode *rvn,int4 slot);
bool tryCallReturnPull(PcodeOp *op,ReplaceVarnode *rvn);
bool tryCallReturnPush(PcodeOp *op,ReplaceVarnode *rvn);
bool trySwitchPull(PcodeOp *op,ReplaceVarnode *rvn);
bool traceForward(ReplaceVarnode *rvn); ///< Trace the logical data-flow forward for the given subgraph variable
bool traceBackward(ReplaceVarnode *rvn); ///< Trace the logical data-flow backward for the given subgraph variable