1f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project/* 2f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * Copyright (C) 2007 The Android Open Source Project 3f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * 4f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * Licensed under the Apache License, Version 2.0 (the "License"); 5f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * you may not use this file except in compliance with the License. 6f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * You may obtain a copy of the License at 7f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * 8f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * http://www.apache.org/licenses/LICENSE-2.0 9f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * 10f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * Unless required by applicable law or agreed to in writing, software 11f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * distributed under the License is distributed on an "AS IS" BASIS, 12f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * See the License for the specific language governing permissions and 14f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * limitations under the License. 15f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 16f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 17f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Projectpackage com.android.dx.dex.code.form; 18f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 19f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Projectimport com.android.dx.dex.code.CstInsn; 20f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Projectimport com.android.dx.dex.code.DalvInsn; 21f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Projectimport com.android.dx.dex.code.InsnFormat; 22f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Projectimport com.android.dx.rop.code.RegisterSpecList; 23f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Projectimport com.android.dx.rop.cst.Constant; 24f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Projectimport com.android.dx.rop.cst.CstFieldRef; 25f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Projectimport com.android.dx.rop.cst.CstType; 26f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Projectimport com.android.dx.util.AnnotatedOutput; 27f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 28dd79e4e11fa20d6677b70ce6618a8653a1f3520djeffhaoimport java.util.BitSet; 29dd79e4e11fa20d6677b70ce6618a8653a1f3520djeffhao 30f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project/** 3199409883d9c4c0ffb49b070ce307bb33a9dfe9f1The Android Open Source Project * Instruction format {@code 22c}. See the instruction format spec 32f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * for details. 33f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 34f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Projectpublic final class Form22c extends InsnFormat { 3599409883d9c4c0ffb49b070ce307bb33a9dfe9f1The Android Open Source Project /** {@code non-null;} unique instance of this class */ 36f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project public static final InsnFormat THE_ONE = new Form22c(); 37f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 38f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /** 39f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * Constructs an instance. This class is not publicly 40f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * instantiable. Use {@link #THE_ONE}. 41f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 42f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project private Form22c() { 43f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project // This space intentionally left blank. 44f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 45f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 46f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /** {@inheritDoc} */ 47f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project @Override 48f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project public String insnArgString(DalvInsn insn) { 49f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project RegisterSpecList regs = insn.getRegisters(); 50f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return regs.get(0).regString() + ", " + regs.get(1).regString() + 51f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project ", " + cstString(insn); 52f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 53f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 54f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /** {@inheritDoc} */ 55f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project @Override 56f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project public String insnCommentString(DalvInsn insn, boolean noteIndices) { 57f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (noteIndices) { 58f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return cstComment(insn); 59f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } else { 60f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return ""; 61f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 62f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 63f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 64f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /** {@inheritDoc} */ 65f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project @Override 66f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project public int codeSize() { 67f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return 2; 68f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 69f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 70f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /** {@inheritDoc} */ 71f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project @Override 72f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project public boolean isCompatible(DalvInsn insn) { 73f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project RegisterSpecList regs = insn.getRegisters(); 74f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (!((insn instanceof CstInsn) && 75f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project (regs.size() == 2) && 76f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project unsignedFitsInNibble(regs.get(0).getReg()) && 77f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project unsignedFitsInNibble(regs.get(1).getReg()))) { 78f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return false; 79f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 80f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 81f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project CstInsn ci = (CstInsn) insn; 82f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project int cpi = ci.getIndex(); 83f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 84f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (! unsignedFitsInShort(cpi)) { 85f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return false; 86f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 87de75089fb7216d19e9c22cce4dc62a49513477d3Carl Shapiro 88f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project Constant cst = ci.getConstant(); 89f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return (cst instanceof CstType) || 90f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project (cst instanceof CstFieldRef); 91f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 92f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 93f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /** {@inheritDoc} */ 94f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project @Override 95dd79e4e11fa20d6677b70ce6618a8653a1f3520djeffhao public BitSet compatibleRegs(DalvInsn insn) { 96dd79e4e11fa20d6677b70ce6618a8653a1f3520djeffhao RegisterSpecList regs = insn.getRegisters(); 97dd79e4e11fa20d6677b70ce6618a8653a1f3520djeffhao BitSet bits = new BitSet(2); 98dd79e4e11fa20d6677b70ce6618a8653a1f3520djeffhao 99dd79e4e11fa20d6677b70ce6618a8653a1f3520djeffhao bits.set(0, unsignedFitsInNibble(regs.get(0).getReg())); 100dd79e4e11fa20d6677b70ce6618a8653a1f3520djeffhao bits.set(1, unsignedFitsInNibble(regs.get(1).getReg())); 101dd79e4e11fa20d6677b70ce6618a8653a1f3520djeffhao return bits; 102dd79e4e11fa20d6677b70ce6618a8653a1f3520djeffhao } 103dd79e4e11fa20d6677b70ce6618a8653a1f3520djeffhao 104dd79e4e11fa20d6677b70ce6618a8653a1f3520djeffhao /** {@inheritDoc} */ 105dd79e4e11fa20d6677b70ce6618a8653a1f3520djeffhao @Override 106f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project public void writeTo(AnnotatedOutput out, DalvInsn insn) { 107f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project RegisterSpecList regs = insn.getRegisters(); 108f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project int cpi = ((CstInsn) insn).getIndex(); 109f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 110f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project write(out, 111f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project opcodeUnit(insn, 112f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project makeByte(regs.get(0).getReg(), regs.get(1).getReg())), 113f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project (short) cpi); 114f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 115f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project} 116