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Added a utility class to decode debug information

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git-svn-id: https://smali.googlecode.com/svn/trunk@170 55b6fa8a-2a1e-11de-a435-ffa8d773f76a
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JesusFreke@JesusFreke.com 2009-06-19 03:52:08 +00:00
parent b3fde8be30
commit a0850c8d2a
1 changed files with 134 additions and 0 deletions
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134
dexlib/src/main/java/org/jf/dexlib/util/DebugInfoDecoder.java Normal file
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/*
* [The "BSD licence"]
* Copyright (c) 2009 Ben Gruver
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package org.jf.dexlib.util;
import org.jf.dexlib.StringIdItem;
import org.jf.dexlib.TypeIdItem;
import org.jf.dexlib.DebugInfoItem;
import org.jf.dexlib.debug.*;
public class DebugInfoDecoder {
private final DebugInfoItem debugItem;
private final DebugInfoDelegate delegate;
private final int registers;
public DebugInfoDecoder(DebugInfoItem debugItem, DebugInfoDelegate delegate, int registers) {
this.debugItem = debugItem;
this.delegate = delegate;
this.registers = registers;
}
public void decode() {
int address = 0;
int line = debugItem.getLineStart();
Local[] locals = new Local[registers];
for (DebugInstruction debugInst: debugItem.getDebugInstructions()) {
switch (debugInst.getOpcode()) {
case 0x00:
return;
case 0x01:
address += ((AdvancePC)debugInst).getAddressDelta();
break;
case 0x02:
line += ((AdvanceLine)debugInst).getLineDelta();
break;
case 0x03:
{
StartLocal inst = (StartLocal)debugInst;
Local local = new Local(inst.getRegisterNumber(), inst.getName(), inst.getType(), null);
locals[inst.getRegisterNumber()] = local;
delegate.startLocal(address, local);
break;
}
case 0x04:
{
StartLocalExtended inst = (StartLocalExtended)debugInst;
Local local = new Local(inst.getRegisterNumber(), inst.getName(), inst.getType(),
inst.getSignature());
locals[inst.getRegisterNumber()] = local;
delegate.startLocal(address, local);
break;
}
case 0x05:
{
EndLocal inst = (EndLocal)debugInst;
delegate.endLocal(address, locals[inst.getRegisterNumber()]);
break;
}
case 0x06:
{
RestartLocal inst = (RestartLocal)debugInst;
delegate.restartLocal(address, locals[inst.getRegisterNumber()]);
break;
}
case 0x07:
delegate.endPrologue(address);
break;
case 0x08:
delegate.startEpilogue(address);
break;
case 0x09:
delegate.setFile(address, ((SetFile)debugInst).getFileName());
break;
default:
{
SpecialOpcode inst = (SpecialOpcode)debugInst;
address += inst.getAddressDelta();
line += inst.getLineDelta();
delegate.line(address, line);
break;
}
}
}
}
public class Local {
public final int register;
public final StringIdItem name;
public final TypeIdItem type;
public final StringIdItem signature;
public Local(int register, StringIdItem name, TypeIdItem type, StringIdItem signature) {
this.register = register;
this.name = name;
this.type = type;
this.signature = signature;
}
}
public static interface DebugInfoDelegate {
public void endPrologue(int address);
public void startEpilogue(int address);
public void startLocal(int address, Local local);
public void endLocal(int address, Local local);
public void restartLocal(int address, Local local);
public void setFile(int address, StringIdItem fileName);
public void line(int address, int line);
}
}