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This commit is contained in:
Jindra Petřík
2021-01-25 11:01:30 +01:00
parent f4e4835f29
commit ddd2d5697b
11 changed files with 162 additions and 17 deletions
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10
libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/FinalProcessLocalData.java
View File

@@ -33,6 +33,16 @@ public class FinalProcessLocalData {
public final List<Loop> loops;
public Map<Integer, Set<Integer>> registerUsage;
public Set<Integer> getRegisterUsage(int regIndex) {
if (registerUsage == null) {
return new HashSet<>();
}
if (!registerUsage.containsKey(regIndex)) {
return new HashSet<>();
}
return registerUsage.get(regIndex);
}
public FinalProcessLocalData(List<Loop> loops) {
temporaryRegisters = new HashSet<>();
registerUsage = new HashMap<>();

2
libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/abc/AVM2LocalData.java
View File

@@ -76,7 +76,7 @@ public class AVM2LocalData extends BaseLocalData {
public boolean thisHasDefaultToPrimitive;
public Map<Integer, Set<Integer>> setLocalPosToGetLocalPos;
public Map<Integer, Set<Integer>> setLocalPosToGetLocalPos = new HashMap<>();
public AVM2LocalData() {

29
libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/abc/avm2/graph/AVM2Graph.java
View File

@@ -284,7 +284,7 @@ public class AVM2Graph extends Graph {
return;
}
if (ignoredSwitches.contains(q.end)) {
if (!next.equals(q.nextParts.get(0))) { //first is after finally
if (q.nextParts.isEmpty() || !next.equals(q.nextParts.get(0))) { //first is after finally
return;
}
}
@@ -616,6 +616,7 @@ public class AVM2Graph extends Graph {
}
output.clear();
stack.clear();
makeAllCommands(tryCommands, st);
output.add(new TryAVM2Item(tryCommands, catchedExceptions, catchedCommands, finallyCommands, finCatchName));
for (int fin_e : catchedFinallys) {
if (finallyJumps.containsKey(fin_e)) {
@@ -940,7 +941,7 @@ public class AVM2Graph extends Graph {
if (next.start == fip) {
if (stack != null && swip != -1) {
AVM2Instruction swIns = avm2code.code.get(swip);
GraphTargetItem t = stack.pop();
GraphTargetItem t = stack.peek();
Double dval = t.getResultAsNumber();
int val = (int) (double) dval;
if (swIns.definition instanceof LookupSwitchIns) {
@@ -1194,7 +1195,7 @@ public class AVM2Graph extends Graph {
@Override
protected void finalProcessAfter(List<GraphTargetItem> list, int level, FinalProcessLocalData localData, String path) {
super.finalProcessAfter(list, level, localData, path);
for (int i = 0; i < list.size(); i++) {
/*for (int i = 0; i < list.size(); i++) {
if (list.get(i) instanceof SetLocalAVM2Item) {
SetLocalAVM2Item ri = (SetLocalAVM2Item) list.get(i);
if (localData.temporaryRegisters.contains(ri.regIndex)) {
@@ -1202,9 +1203,18 @@ public class AVM2Graph extends Graph {
i--;
}
}
}
}*/
}
private boolean isIntegerOrPopInteger(GraphTargetItem item) {
if (item instanceof IntegerValueAVM2Item) {
return true;
}
if ((item instanceof PushItem) && (item.value instanceof IntegerValueAVM2Item)) {
return true;
}
return false;
}
@Override
protected void finalProcess(List<GraphTargetItem> list, int level, FinalProcessLocalData localData, String path) throws InterruptedException {
@@ -1227,7 +1237,7 @@ public class AVM2Graph extends Graph {
if (list.get(i) instanceof SetLocalAVM2Item) {
SetLocalAVM2Item ri = (SetLocalAVM2Item) list.get(i);
int setLocalIp = avm2code.adr2pos(ri.getSrc().getAddress());
Set<Integer> usages = localData.registerUsage.get(setLocalIp);
Set<Integer> usages = localData.getRegisterUsage(setLocalIp);
if (ri.value.getNotCoerced() instanceof ExceptionAVM2Item) {
ExceptionAVM2Item ea = (ExceptionAVM2Item) ri.value.getNotCoerced();
if (ea.exception.isFinally()) {
@@ -1261,7 +1271,7 @@ public class AVM2Graph extends Graph {
}
if (i + 2 < list.size()) {
if ((list.get(i + 1) instanceof IntegerValueAVM2Item) && (list.get(i + 2) instanceof ReturnValueAVM2Item)
if (isIntegerOrPopInteger(list.get(i + 1)) && (list.get(i + 2) instanceof ReturnValueAVM2Item)
&& (list.get(i + 2).value instanceof LocalRegAVM2Item)
&& (((LocalRegAVM2Item) list.get(i + 2).value).regIndex == ri.regIndex)) {
ReturnValueAVM2Item r = (ReturnValueAVM2Item) list.get(i + 2);
@@ -1271,7 +1281,7 @@ public class AVM2Graph extends Graph {
i--;
continue;
}
if ((list.get(i + 1) instanceof IntegerValueAVM2Item) && (list.get(i + 2) instanceof ThrowAVM2Item)
if (isIntegerOrPopInteger(list.get(i + 1)) && (list.get(i + 2) instanceof ThrowAVM2Item)
&& (list.get(i + 2).value instanceof LocalRegAVM2Item)
&& (((LocalRegAVM2Item) list.get(i + 2).value).regIndex == ri.regIndex)) {
ThrowAVM2Item t = (ThrowAVM2Item) list.get(i + 2);
@@ -1282,8 +1292,11 @@ public class AVM2Graph extends Graph {
continue;
}
} else if (i + 1 < list.size() && usages.isEmpty()) {
if (list.get(i + 1) instanceof IntegerValueAVM2Item) {
if (isIntegerOrPopInteger(list.get(i + 1))) {
list.remove(i + 1);
list.remove(i);
i--;
continue;
}
}
}