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Fix up and improve how parameters are mapped to registers, for local info

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This additionally adds the local info for the "this" parameter
This commit is contained in:
Ben Gruver 2012-11-01 21:14:17 -07:00
parent 269c15688b
commit 8582095cfb
1 changed files with 22 additions and 18 deletions
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46
dexlib2/src/main/java/org/jf/dexlib2/dexbacked/util/DebugInfo.java
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@ -106,34 +106,38 @@ public abstract class DebugInfo implements Iterable<DebugItem> {
VariableSizeList<? extends MethodParameter> parameters = getParametersWithNames();
final VariableSizeList<? extends MethodParameter>.Iterator parameterIterator = parameters.listIterator();
{ // local scope for i
int i=0;
while (parameterIterator.hasNext()) {
locals[i++] = parameterIterator.next();
}
}
if (parameters.size() < registerCount) {
// we need to push the parameter locals back to their appropriate register
int localIndex = registerCount-1;
for (int i=parameters.size()-1; i>-1; i--) {
LocalInfo currentLocal = locals[i];
String type = currentLocal.getType();
if (type != null && (type.equals("J") || type.equals("D"))) {
localIndex--;
}
locals[localIndex] = currentLocal;
locals[i] = EMPTY_LOCAL_INFO;
localIndex--;
}
// first, we grab all the parameters and temporarily store them at the beginning of locals,
// disregarding any wide types
int parameterIndex = 0;
if (!AccessFlags.STATIC.isSet(methodImpl.method.getAccessFlags())) {
// add the local info for the "this" parameter
locals[localIndex] = new LocalInfo() {
locals[parameterIndex++] = new LocalInfo() {
@Override public String getName() { return "this"; }
@Override public String getType() { return methodImpl.method.classDef.getName(); }
@Override public String getSignature() { return null; }
};
}
while (parameterIterator.hasNext()) {
locals[parameterIndex++] = parameterIterator.next();
}
if (parameterIndex < registerCount) {
// now, we push the parameter locals back to their appropriate register, starting from the end
int localIndex = registerCount-1;
while(--parameterIndex > -1) {
LocalInfo currentLocal = locals[parameterIndex];
String type = currentLocal.getType();
if (type != null && (type.equals("J") || type.equals("D"))) {
localIndex--;
if (localIndex == parameterIndex) {
// there's no more room to push, the remaining registers are already in the correct place
break;
}
}
locals[localIndex] = currentLocal;
locals[parameterIndex] = EMPTY_LOCAL_INFO;
localIndex--;
}
}
return new Iterator<DebugItem>() {