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AS3: post/pre increment/decrement decompilation, declaration of local registers

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This commit is contained in:
Jindra Petk
2011-07-12 20:04:28 +02:00
parent 6106a6e6ca
commit dcfffa711d
11 changed files with 141 additions and 22 deletions
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118
trunk/src/com/jpexs/asdec/abc/avm2/AVM2Code.java
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@@ -650,6 +650,41 @@ public class AVM2Code {
private int toSourceCount = 0;
private int ipOfType(int from,boolean up,Class search,Class skipped,int start,int end)
{
if(up)
{
System.out.println("Searching up from "+from);
for(int i=from;i>=start;i--){
if(search.isInstance(code.get(i).definition)){
return i;
}else if((skipped!=null)&&skipped.isInstance(code.get(i).definition))
{
//skipped
}else{
return -1;
}
}
}else
{
System.out.println("Searching down from "+from);
for(int i=from;i<=end;i++){
if(search.isInstance(code.get(i).definition)){
return i;
}else if((skipped!=null)&&skipped.isInstance(code.get(i).definition))
{
//skipped
}else{
return -1;
}
}
}
System.out.println("NotfoundAtAll "+search);
return -1;
}
public HashMap<Integer,String> getLocalRegNamesFromDebug(ABC abc){
HashMap<Integer,String> localRegNames= new HashMap<Integer,String>();
for(AVM2Instruction ins:code)
@@ -663,6 +698,19 @@ public HashMap<Integer,String> getLocalRegNamesFromDebug(ABC abc){
return localRegNames;
}
private void clearKilledAssigments(List<TreeItem> output){
for(int i=0;i<output.size();i++){
if(output.get(i) instanceof SetLocalTreeItem)
{
if(isKilled(((SetLocalTreeItem)output.get(i)).regIndex, 0, code.size()-1))
{
output.remove(i);
i--;
}
}
}
}
private ConvertOutput toSource(boolean isStatic, int classIndex, java.util.HashMap<Integer, TreeItem> localRegs, Stack<TreeItem> stack, Stack<TreeItem> scopeStack, ABC abc, ConstantPool constants, MethodInfo method_info[], MethodBody body, int start, int end) throws ConvertException {
boolean debugMode = false;
if (debugMode)
@@ -1082,11 +1130,14 @@ public HashMap<Integer,String> getLocalRegNamesFromDebug(ABC abc){
//stack.add("(" + stack.pop() + ")||");
isAnd = false;
} else if ((insAfter.definition instanceof IncrementIIns) || ((insAfter.definition instanceof IncrementIns))) {
if (((ip - 1 >= start) && (ip + 2 <= end)) && ((code.get(ip + 2).definition instanceof SetLocalTypeIns) && (code.get(ip - 1).definition instanceof GetLocalTypeIns))) {
stack.add(new PostIncrementTreeItem(insAfter, stack.pop()));
ip += 3;
addr = pos2adr(ip);
break;
int np=-1;
if(((np=ipOfType(ip+2, false, SetLocalTypeIns.class, CoerceOrConvertTypeIns.class, start, end))>-1)
&&(ipOfType(ip-1, true, GetLocalTypeIns.class, CoerceOrConvertTypeIns.class, start, end)>-1))
{
stack.add(new PostIncrementTreeItem(insAfter, stack.pop()));
ip = np+1;
addr = pos2adr(ip);
break;
}
if (((ip - 1 >= start) && (ip + 2 <= end))
&& (code.get(ip + 2).definition instanceof SetLocalTypeIns)
@@ -1114,11 +1165,14 @@ public HashMap<Integer,String> getLocalRegNamesFromDebug(ABC abc){
addr = pos2adr(ip);
break;
} else if ((insAfter.definition instanceof DecrementIIns) || ((insAfter.definition instanceof DecrementIns))) {
if (((ip - 1 >= start) && (ip + 2 <= end)) && ((code.get(ip + 2).definition instanceof SetLocalTypeIns) && (code.get(ip - 1).definition instanceof GetLocalTypeIns))) {
stack.add(new PostDecrementTreeItem(insAfter, stack.pop()));
ip += 3;
addr = pos2adr(ip);
break;
int np=-1;
if(((np=ipOfType(ip+2, false, SetLocalTypeIns.class, CoerceOrConvertTypeIns.class, start, end))>-1)
&&(ipOfType(ip-1, true, GetLocalTypeIns.class, CoerceOrConvertTypeIns.class, start, end)>-1))
{
stack.add(new PostDecrementTreeItem(insAfter, stack.pop()));
ip = np+1;
addr = pos2adr(ip);
break;
}
if (((ip - 1 >= start) && (ip + 2 <= end))
&& (code.get(ip + 2).definition instanceof SetLocalTypeIns)
@@ -1146,7 +1200,7 @@ public HashMap<Integer,String> getLocalRegNamesFromDebug(ABC abc){
addr = pos2adr(ip);
break;
} else if ((insBefore.definition instanceof IncrementIIns) || ((insBefore.definition instanceof IncrementIns))) {
if (((ip - 2 >= start) && (ip + 2 <= end)) && (code.get(ip + 1).definition instanceof ConvertIIns) && (code.get(ip + 2).definition instanceof SetLocalTypeIns) && (code.get(ip - 2).definition instanceof GetLocalTypeIns)) {
if (((ip - 2 >= start) && (ip + 2 <= end)) && (code.get(ip + 1).definition instanceof CoerceOrConvertTypeIns) && (code.get(ip + 2).definition instanceof SetLocalTypeIns) && (code.get(ip - 2).definition instanceof GetLocalTypeIns)) {
stack.pop();
int regId = ((SetLocalTypeIns) code.get(ip + 2).definition).getRegisterId(code.get(ip + 2));
stack.add(new PreIncrementTreeItem(insBefore, new LocalRegTreeItem(code.get(ip + 2), regId, localRegs.get(regId))));
@@ -1183,7 +1237,7 @@ public HashMap<Integer,String> getLocalRegNamesFromDebug(ABC abc){
addr = pos2adr(ip);
break;
} else if ((insBefore.definition instanceof DecrementIIns) || ((insBefore.definition instanceof DecrementIns))) {
if (((ip - 2 >= start) && (ip + 2 <= end)) && (code.get(ip + 1).definition instanceof ConvertIIns) && (code.get(ip + 2).definition instanceof SetLocalTypeIns) && (code.get(ip - 2).definition instanceof GetLocalTypeIns)) {
if (((ip - 2 >= start) && (ip + 2 <= end)) && (code.get(ip + 1).definition instanceof CoerceOrConvertTypeIns) && (code.get(ip + 2).definition instanceof SetLocalTypeIns) && (code.get(ip - 2).definition instanceof GetLocalTypeIns)) {
stack.pop();
int regId = ((SetLocalTypeIns) code.get(ip + 2).definition).getRegisterId(code.get(ip + 2));
stack.add(new PreDecrementTreeItem(insBefore, new LocalRegTreeItem(code.get(ip + 2), regId, localRegs.get(regId))));
@@ -1322,7 +1376,7 @@ public HashMap<Integer,String> getLocalRegNamesFromDebug(ABC abc){
}
if (debugMode)
System.out.println("CLOSE SubSource:" + start + "-" + end + " " + code.get(start).toString() + " to " + code.get(end).toString());
clearKilledAssigments(output);
return new ConvertOutput(stack, output);
} catch (ConvertException cex) {
throw cex;
@@ -1360,6 +1414,27 @@ public HashMap<Integer,String> getLocalRegNamesFromDebug(ABC abc){
}
}
public int getRegisterCount(){
int maxRegister=-1;
for(AVM2Instruction ins:code)
{
int regId=-1;
if(ins.definition instanceof SetLocalTypeIns)
{
regId=((SetLocalTypeIns)ins.definition).getRegisterId(ins);
}
if(ins.definition instanceof GetLocalTypeIns)
{
regId=((GetLocalTypeIns)ins.definition).getRegisterId(ins);
}
if(regId>maxRegister)
{
maxRegister=regId;
}
}
return maxRegister+1;
}
public String toSource(boolean isStatic, int classIndex, ABC abc, ConstantPool constants, MethodInfo method_info[], MethodBody body, boolean hilighted) {
toSourceCount = 0;
loopList = new ArrayList<Loop>();
@@ -1378,12 +1453,29 @@ public HashMap<Integer,String> getLocalRegNamesFromDebug(ABC abc){
return s;
}
String parts[] = s.split("\r\n");
String sub = "";
int level = 0;
for (int t = 0; t < body.traits.traits.length; t++) {
sub += body.traits.traits[t].convert(constants, method_info,abc) + ";\r\n";
}
int regCount=getRegisterCount();
int paramCount=0;
if(body.method_info!=-1)
{
MethodInfo mi=method_info[body.method_info];
paramCount=mi.param_types.length;
if(mi.flagNeed_rest()){
paramCount++;
}
}
for(int i=paramCount+1;i<regCount;i++)
{
if(!isKilled(i, 0, code.size()-1)){
sub+="var "+InstructionDefinition.localRegName(i)+";\r\n";
}
}
try {
Stack<String> loopStack = new Stack<String>();
for (int p = 0; p < parts.length; p++) {