/*
* [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.dexlib.Code.Format;
import org.jf.dexlib.Code.Instruction;
import org.jf.dexlib.Code.OdexedInvokeVirtual;
import org.jf.dexlib.Code.Opcode;
import org.jf.dexlib.Code.RegisterRangeInstruction;
import org.jf.dexlib.DexFile;
import org.jf.dexlib.Util.AnnotatedOutput;
import org.jf.dexlib.Util.NumberUtils;
public class Instruction3rms extends Instruction implements RegisterRangeInstruction, OdexedInvokeVirtual {
public static final Instruction.InstructionFactory Factory = new Factory();
private byte regCount;
private short startReg;
private short vtableIndex;
public Instruction3rms(Opcode opcode, short regCount, int startReg, int vtableIndex) {
super(opcode);
if (regCount >= 1 << 8) {
throw new RuntimeException("regCount must be less than 256");
}
if (regCount < 0) {
throw new RuntimeException("regCount cannot be negative");
}
if (startReg >= 1 << 16) {
throw new RuntimeException("The beginning register of the range must be less than 65536");
}
if (startReg < 0) {
throw new RuntimeException("The beginning register of the range cannot be negative");
}
if (vtableIndex >= 1 << 16) {
throw new RuntimeException("The method index must be less than 65536");
}
this.regCount = (byte)regCount;
this.startReg = (short)startReg;
this.vtableIndex = (short)vtableIndex;
}
private Instruction3rms(Opcode opcode, byte[] buffer, int bufferIndex) {
super(opcode);
this.regCount = (byte)NumberUtils.decodeUnsignedByte(buffer[bufferIndex + 1]);
this.vtableIndex = (short)NumberUtils.decodeUnsignedShort(buffer, bufferIndex + 2);
this.startReg = (short)NumberUtils.decodeUnsignedShort(buffer, bufferIndex + 4);
}
protected void writeInstruction(AnnotatedOutput out, int currentCodeAddress) {
out.writeByte(opcode.value);
out.writeByte(regCount);
out.writeShort(vtableIndex);
out.writeShort(startReg);
}
public Format getFormat() {
return Format.Format3rms;
}
public int getRegCount() {
return (short)(regCount & 0xFF);
}
public int getStartRegister() {
return startReg & 0xFFFF;
}
public int getVtableIndex() {
return vtableIndex & 0xFFFF;
}
private static class Factory implements Instruction.InstructionFactory {
public Instruction makeInstruction(DexFile dexFile, Opcode opcode, byte[] buffer, int bufferIndex) {
return new Instruction3rms(opcode, buffer, bufferIndex);
}
}
}