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Fixed - AS3: return in finally

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This commit is contained in:
Jindra Petřík
2021-02-08 20:15:19 +01:00
parent 70e421ec06
commit 79cf2324f9
4 changed files with 55 additions and 60 deletions
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libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/abc/avm2/graph/AVM2Graph.java
+32 -37
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@@ -150,7 +150,6 @@ public class AVM2Graph extends Graph {
avm2LocalData.setLocalPosToGetLocalPos = setLocalPosToGetLocalPos;
}
public Map<Integer, Set<Integer>> calculateLocalRegsUsage(String path, Set<GraphPart> allParts) {
logger.fine("--- " + path + " ---");
Map<Integer, Set<Integer>> setLocalPosToGetLocalPos = new TreeMap<>();
@@ -253,7 +252,6 @@ public class AVM2Graph extends Graph {
return;
}
visited.add(q);
for (GraphPart r : q.refs) {
@@ -609,8 +607,7 @@ public class AVM2Graph extends Graph {
ret.addAll(output);
return ret;
}
if ((part.nextParts.size() == 2) && (!stack.isEmpty()) && (stack.peek() instanceof StrictEqAVM2Item)) {
GraphSourceItem switchStartItem = code.get(part.start);
@@ -634,7 +631,7 @@ public class AVM2Graph extends Graph {
int cnt = 1;
while (part.nextParts.size() > 1
&& part.nextParts.get(1).getHeight() > 1
&& ((AVM2Instruction)code.get(part.nextParts.get(1).end >= code.size() ? code.size() - 1 : part.nextParts.get(1).end)).definition instanceof IfStrictEqIns
&& ((AVM2Instruction) code.get(part.nextParts.get(1).end >= code.size() ? code.size() - 1 : part.nextParts.get(1).end)).definition instanceof IfStrictEqIns
&& ((top = translatePartGetStack(localData, part.nextParts.get(1), stack, staticOperation)) instanceof StrictEqAVM2Item)) {
cnt++;
part = part.nextParts.get(1);
@@ -645,59 +642,49 @@ public class AVM2Graph extends Graph {
caseValuesMapRight.add(set.rightSide);
}
List<GraphTargetItem> caseValuesMap = caseValuesMapLeft;
//determine whether local register are on left or on right side of === operator
// -1 = there's no register,
// -2 = there are mixed registers,
// N = there is always register number N
int leftReg = -1;
int rightReg = -1;
for(int cv=0;cv<caseValuesMapLeft.size();cv++){
if(caseValuesMapLeft.get(cv) instanceof LocalRegAVM2Item)
{
int reg = ((LocalRegAVM2Item)caseValuesMapLeft.get(cv)).regIndex;
if(leftReg == -1)
{
for (int cv = 0; cv < caseValuesMapLeft.size(); cv++) {
if (caseValuesMapLeft.get(cv) instanceof LocalRegAVM2Item) {
int reg = ((LocalRegAVM2Item) caseValuesMapLeft.get(cv)).regIndex;
if (leftReg == -1) {
leftReg = reg;
}else{
if(leftReg != reg)
{
} else {
if (leftReg != reg) {
leftReg = -2;
}
}
}
if(caseValuesMapRight.get(cv) instanceof LocalRegAVM2Item)
{
int reg = ((LocalRegAVM2Item)caseValuesMapRight.get(cv)).regIndex;
if(rightReg == -1)
{
if (caseValuesMapRight.get(cv) instanceof LocalRegAVM2Item) {
int reg = ((LocalRegAVM2Item) caseValuesMapRight.get(cv)).regIndex;
if (rightReg == -1) {
rightReg = reg;
}else{
if(rightReg != reg)
{
} else {
if (rightReg != reg) {
rightReg = -2;
}
}
}
}
if(leftReg > 0) {
if (leftReg > 0) {
switchedObject = new LocalRegAVM2Item(null, null, leftReg, null);
caseValuesMap = caseValuesMapRight;
} else if (rightReg > 0) {
switchedObject = new LocalRegAVM2Item(null, null, rightReg, null);
}
else if(rightReg > 0)
{
switchedObject = new LocalRegAVM2Item(null, null, rightReg, null);
}
if ((leftReg < 0 && rightReg < 0) || (cnt == 1)) {
stack.push(set);
} else {
part = part.nextParts.get(1);
GraphPart defaultPart = part;
if (code.size() > defaultPart.start && ((AVM2Instruction)code.get(defaultPart.start)).definition instanceof JumpIns) {
if (code.size() > defaultPart.start && ((AVM2Instruction) code.get(defaultPart.start)).definition instanceof JumpIns) {
defaultPart = defaultPart.nextParts.get(0);
}
@@ -880,12 +867,12 @@ public class AVM2Graph extends Graph {
}
}
}
return ret;
}
@Override
protected GraphPart checkPart(TranslateStack stack, BaseLocalData localData, GraphPart next, Set<GraphPart> allParts) {
protected GraphPart checkPart(TranslateStack stack, BaseLocalData localData, GraphPart prev, GraphPart next, Set<GraphPart> allParts) {
AVM2LocalData aLocalData = (AVM2LocalData) localData;
if (aLocalData.finallyJumps == null) {
aLocalData.finallyJumps = new HashMap<>();
@@ -950,6 +937,16 @@ public class AVM2Graph extends Graph {
}
}
if (prev != null) {
for (int swip : ignoredSwitches.values()) {
if (swip > -1) {
if (prev.end == swip) {
return null;
}
}
}
}
return next;
}
@@ -970,7 +967,6 @@ public class AVM2Graph extends Graph {
return true;
}
@Override
protected GraphTargetItem checkLoop(List<GraphTargetItem> output, LoopItem loopItem, BaseLocalData localData, List<Loop> loops) {
AVM2LocalData aLocalData = (AVM2LocalData) localData;
@@ -1131,7 +1127,6 @@ public class AVM2Graph extends Graph {
}
}
if (gti instanceof NextValueAVM2Item) {
return new ForEachInAVM2Item(w.getSrc(), w.getLineStartItem(), w.loop, new InAVM2Item(hn.getInstruction(), hn.getLineStartIns(), varName, collection), w.commands);
} else if (gti instanceof NextNameAVM2Item) {