/*
* [The "BSD licence"]
* Copyright (c) 2010 Ben Gruver (JesusFreke)
* 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.baksmali.Adaptors.Format;
import org.jf.baksmali.Adaptors.MethodItem;
import org.jf.baksmali.Adaptors.ReferenceFormatter;
import org.jf.baksmali.Adaptors.RegisterFormatter;
import org.jf.util.IndentingWriter;
import org.jf.baksmali.Renderers.LongRenderer;
import org.jf.dexlib.Code.*;
import org.jf.dexlib.CodeItem;
import org.jf.dexlib.Item;
import java.io.IOException;
public class InstructionMethodItem<T extends Instruction> extends MethodItem {
protected final CodeItem codeItem;
protected final T instruction;
public InstructionMethodItem(CodeItem codeItem, int codeAddress, T instruction) {
super(codeAddress);
this.codeItem = codeItem;
this.instruction = instruction;
}
public double getSortOrder() {
//instructions should appear after everything except an "end try" label and .catch directive
return 100;
}
@Override
public boolean writeTo(IndentingWriter writer) throws IOException {
switch (instruction.getFormat()) {
case Format10t:
writeOpcode(writer);
writer.write(' ');
writeTargetLabel(writer);
return true;
case Format10x:
writeOpcode(writer);
return true;
case Format11n:
writeOpcode(writer);
writer.write(' ');
writeFirstRegister(writer);
writer.write(", ");
writeLiteral(writer);
return true;
case Format11x:
writeOpcode(writer);
writer.write(' ');
writeFirstRegister(writer);
return true;
case Format12x:
writeOpcode(writer);
writer.write(' ');
writeFirstRegister(writer);
writer.write(", ");
writeSecondRegister(writer);
return true;
case Format20t:
case Format30t:
writeOpcode(writer);
writer.write(' ');
writeTargetLabel(writer);
return true;
case Format21c:
case Format31c:
writeOpcode(writer);
writer.write(' ');
writeFirstRegister(writer);
writer.write(", ");
writeReference(writer);
return true;
case Format21h:
case Format21s:
case Format31i:
case Format51l:
writeOpcode(writer);
writer.write(' ');
writeFirstRegister(writer);
writer.write(", ");
writeLiteral(writer);
return true;
case Format21t:
case Format31t:
writeOpcode(writer);
writer.write(' ');
writeFirstRegister(writer);
writer.write(", ");
writeTargetLabel(writer);
return true;
case Format22b:
case Format22s:
writeOpcode(writer);
writer.write(' ');
writeFirstRegister(writer);
writer.write(", ");
writeSecondRegister(writer);
writer.write(", ");
writeLiteral(writer);
return true;
case Format22c:
writeOpcode(writer);
writer.write(' ');
writeFirstRegister(writer);
writer.write(", ");
writeSecondRegister(writer);
writer.write(", ");
writeReference(writer);
return true;
case Format22cs:
writeOpcode(writer);
writer.write(' ');
writeFirstRegister(writer);
writer.write(", ");
writeSecondRegister(writer);
writer.write(", ");
writeFieldOffset(writer);
return true;
case Format22t:
writeOpcode(writer);
writer.write(' ');
writeFirstRegister(writer);
writer.write(", ");
writeSecondRegister(writer);
writer.write(", ");
writeTargetLabel(writer);
return true;
case Format22x:
case Format32x:
writeOpcode(writer);
writer.write(' ');
writeFirstRegister(writer);
writer.write(", ");
writeSecondRegister(writer);
return true;
case Format23x:
writeOpcode(writer);
writer.write(' ');
writeFirstRegister(writer);
writer.write(", ");
writeSecondRegister(writer);
writer.write(", ");
writeThirdRegister(writer);
return true;
case Format35c:
case Format35s:
writeOpcode(writer);
writer.write(' ');
writeInvokeRegisters(writer);
writer.write(", ");
writeReference(writer);
return true;
case Format35ms:
writeOpcode(writer);
writer.write(' ');
writeInvokeRegisters(writer);
writer.write(", ");
writeVtableIndex(writer);
return true;
case Format3rc:
writeOpcode(writer);
writer.write(' ');
writeInvokeRangeRegisters(writer);
writer.write(", ");
writeReference(writer);
return true;
case Format3rms:
writeOpcode(writer);
writer.write(' ');
writeInvokeRangeRegisters(writer);
writer.write(", ");
writeVtableIndex(writer);
return true;
}
assert false;
return false;
}
protected void writeOpcode(IndentingWriter writer) throws IOException {
writer.write(instruction.opcode.name);
}
protected void writeTargetLabel(IndentingWriter writer) throws IOException {
//this method is overrided by OffsetInstructionMethodItem, and should only be called for the formats that
//have a target
throw new RuntimeException();
}
protected void writeRegister(IndentingWriter writer, int registerNumber) throws IOException {
RegisterFormatter.writeTo(writer, codeItem, registerNumber);
}
protected void writeFirstRegister(IndentingWriter writer) throws IOException {
writeRegister(writer, ((SingleRegisterInstruction)instruction).getRegisterA());
}
protected void writeSecondRegister(IndentingWriter writer) throws IOException {
writeRegister(writer, ((TwoRegisterInstruction)instruction).getRegisterB());
}
protected void writeThirdRegister(IndentingWriter writer) throws IOException {
writeRegister(writer, ((ThreeRegisterInstruction)instruction).getRegisterC());
}
protected void writeInvokeRegisters(IndentingWriter writer) throws IOException {
FiveRegisterInstruction instruction = (FiveRegisterInstruction)this.instruction;
final int regCount = instruction.getRegCount();
writer.write('{');
switch (regCount) {
case 1:
writeRegister(writer, instruction.getRegisterD());
break;
case 2:
writeRegister(writer, instruction.getRegisterD());
writer.write(", ");
writeRegister(writer, instruction.getRegisterE());
break;
case 3:
writeRegister(writer, instruction.getRegisterD());
writer.write(", ");
writeRegister(writer, instruction.getRegisterE());
writer.write(", ");
writeRegister(writer, instruction.getRegisterF());
break;
case 4:
writeRegister(writer, instruction.getRegisterD());
writer.write(", ");
writeRegister(writer, instruction.getRegisterE());
writer.write(", ");
writeRegister(writer, instruction.getRegisterF());
writer.write(", ");
writeRegister(writer, instruction.getRegisterG());
break;
case 5:
writeRegister(writer, instruction.getRegisterD());
writer.write(", ");
writeRegister(writer, instruction.getRegisterE());
writer.write(", ");
writeRegister(writer, instruction.getRegisterF());
writer.write(", ");
writeRegister(writer, instruction.getRegisterG());
writer.write(", ");
writeRegister(writer, instruction.getRegisterA());
break;
}
writer.write('}');
}
protected void writeInvokeRangeRegisters(IndentingWriter writer) throws IOException {
RegisterRangeInstruction instruction = (RegisterRangeInstruction)this.instruction;
int regCount = instruction.getRegCount();
if (regCount == 0) {
writer.write("{}");
} else {
int startRegister = instruction.getStartRegister();
RegisterFormatter.writeRegisterRange(writer, codeItem, startRegister, startRegister+regCount-1);
}
}
protected void writeLiteral(IndentingWriter writer) throws IOException {
LongRenderer.writeSignedIntOrLongTo(writer, ((LiteralInstruction)instruction).getLiteral());
}
protected void writeFieldOffset(IndentingWriter writer) throws IOException {
writer.write("field@0x");
writer.printLongAsHex(((OdexedFieldAccess)instruction).getFieldOffset());
}
protected void writeVtableIndex(IndentingWriter writer) throws IOException {
writer.write("vtable@0x");
writer.printLongAsHex(((OdexedInvokeVirtual)instruction).getMethodIndex());
}
protected void writeReference(IndentingWriter writer) throws IOException {
Item item = ((InstructionWithReference)instruction).getReferencedItem();
ReferenceFormatter.writeReference(writer, item);
}
}