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GP-3429 Intersect tests for stack affecting ops

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caheckman 2023-07-07 21:39:36 +00:00
parent d932173a25
commit 67b22166af
12 changed files with 432 additions and 15 deletions
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Ghidra/Features/Decompiler/src/decompile/cpp/variable.hh
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@ -253,12 +253,15 @@ public:
/// and still keeping the cached tests accurate, by calling the updateHigh() method. If two HighVariables
/// to be merged, the cached tests can be updated by calling moveIntersectTest() before merging.
class HighIntersectTest {
PcodeOpSet &affectingOps; ///< PcodeOps that may indirectly affect the intersection test
map<HighEdge,bool> highedgemap; ///< A cache of intersection tests, sorted by HighVariable pair
static void gatherBlockVarnodes(HighVariable *a,int4 blk,const Cover &cover,vector<Varnode *> &res);
static bool testBlockIntersection(HighVariable *a,int4 blk,const Cover &cover,int4 relOff,const vector<Varnode *> &blist);
bool blockIntersection(HighVariable *a,HighVariable *b,int4 blk);
void purgeHigh(HighVariable *high); ///< Remove cached intersection tests for a given HighVariable
bool testUntiedCallIntersection(HighVariable *tied,HighVariable *untied);
public:
HighIntersectTest(PcodeOpSet &cCover) : affectingOps(cCover) {}
void moveIntersectTests(HighVariable *high1,HighVariable *high2);
bool updateHigh(HighVariable *a); ///< Make sure given HighVariable's Cover is up-to-date
bool intersection(HighVariable *a,HighVariable *b);