soot.toDex.instructions.Insn23x Maven / Gradle / Ivy
package soot.toDex.instructions;
/*-
* #%L
* Soot - a J*va Optimization Framework
* %%
* Copyright (C) 1997 - 2018 Raja Vallée-Rai and others
* %%
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation, either version 2.1 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Lesser Public License for more details.
*
* You should have received a copy of the GNU General Lesser Public
* License along with this program. If not, see
* .
* #L%
*/
import java.util.BitSet;
import org.jf.dexlib2.Opcode;
import org.jf.dexlib2.builder.BuilderInstruction;
import org.jf.dexlib2.builder.instruction.BuilderInstruction23x;
import soot.toDex.LabelAssigner;
import soot.toDex.Register;
/**
* The "23x" instruction format: It needs two 16-bit code units, has three registers and is used for general purposes (hence
* the "x").
*
* It is used e.g. by the opcodes "cmp-long", "aput" and "add-int".
*/
public class Insn23x extends AbstractInsn implements ThreeRegInsn {
public Insn23x(Opcode opc, Register regA, Register regB, Register regC) {
super(opc);
regs.add(regA);
regs.add(regB);
regs.add(regC);
}
public Register getRegA() {
return regs.get(REG_A_IDX);
}
public Register getRegB() {
return regs.get(REG_B_IDX);
}
public Register getRegC() {
return regs.get(REG_C_IDX);
}
@Override
protected BuilderInstruction getRealInsn0(LabelAssigner assigner) {
return new BuilderInstruction23x(opc, (short) getRegA().getNumber(), (short) getRegB().getNumber(),
(short) getRegC().getNumber());
}
@Override
public BitSet getIncompatibleRegs() {
BitSet incompatRegs = new BitSet(3);
if (!getRegA().fitsShort()) {
incompatRegs.set(REG_A_IDX);
}
if (!getRegB().fitsShort()) {
incompatRegs.set(REG_B_IDX);
}
if (!getRegC().fitsShort()) {
incompatRegs.set(REG_C_IDX);
}
return incompatRegs;
}
}