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; 27dd79e4e11fa20d6677b70ce6618a8653a1f3520djeffhaoimport java.util.BitSet; 28dd79e4e11fa20d6677b70ce6618a8653a1f3520djeffhao 29f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project/** 3099409883d9c4c0ffb49b070ce307bb33a9dfe9f1The Android Open Source Project * Instruction format {@code 22c}. See the instruction format spec 31f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * for details. 32f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 33f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Projectpublic final class Form22c extends InsnFormat { 3499409883d9c4c0ffb49b070ce307bb33a9dfe9f1The Android Open Source Project /** {@code non-null;} unique instance of this class */ 35f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project public static final InsnFormat THE_ONE = new Form22c(); 36f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 37f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /** 38f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * Constructs an instance. This class is not publicly 39f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * instantiable. Use {@link #THE_ONE}. 40f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 41f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project private Form22c() { 42f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project // This space intentionally left blank. 43f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 44f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 45f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /** {@inheritDoc} */ 46f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project @Override 47f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project public String insnArgString(DalvInsn insn) { 48f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project RegisterSpecList regs = insn.getRegisters(); 49f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return regs.get(0).regString() + ", " + regs.get(1).regString() + 50f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project ", " + cstString(insn); 51f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 52f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 53f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /** {@inheritDoc} */ 54f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project @Override 55f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project public String insnCommentString(DalvInsn insn, boolean noteIndices) { 56f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (noteIndices) { 57f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return cstComment(insn); 58f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } else { 59f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return ""; 60f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 61f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 62f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 63f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /** {@inheritDoc} */ 64f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project @Override 65f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project public int codeSize() { 66f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return 2; 67f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 68f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 69f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /** {@inheritDoc} */ 70f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project @Override 71f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project public boolean isCompatible(DalvInsn insn) { 72f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project RegisterSpecList regs = insn.getRegisters(); 73f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (!((insn instanceof CstInsn) && 74f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project (regs.size() == 2) && 75f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project unsignedFitsInNibble(regs.get(0).getReg()) && 76f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project unsignedFitsInNibble(regs.get(1).getReg()))) { 77f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return false; 78f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 79f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 80f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project CstInsn ci = (CstInsn) insn; 81f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project int cpi = ci.getIndex(); 82f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 83f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (! unsignedFitsInShort(cpi)) { 84f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return false; 85f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 86de75089fb7216d19e9c22cce4dc62a49513477d3Carl Shapiro 87f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project Constant cst = ci.getConstant(); 88f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return (cst instanceof CstType) || 89f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project (cst instanceof CstFieldRef); 90f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 91f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 92f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /** {@inheritDoc} */ 93f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project @Override 94dd79e4e11fa20d6677b70ce6618a8653a1f3520djeffhao public BitSet compatibleRegs(DalvInsn insn) { 95dd79e4e11fa20d6677b70ce6618a8653a1f3520djeffhao RegisterSpecList regs = insn.getRegisters(); 96dd79e4e11fa20d6677b70ce6618a8653a1f3520djeffhao BitSet bits = new BitSet(2); 97dd79e4e11fa20d6677b70ce6618a8653a1f3520djeffhao 98dd79e4e11fa20d6677b70ce6618a8653a1f3520djeffhao bits.set(0, unsignedFitsInNibble(regs.get(0).getReg())); 99dd79e4e11fa20d6677b70ce6618a8653a1f3520djeffhao bits.set(1, unsignedFitsInNibble(regs.get(1).getReg())); 100dd79e4e11fa20d6677b70ce6618a8653a1f3520djeffhao return bits; 101dd79e4e11fa20d6677b70ce6618a8653a1f3520djeffhao } 102dd79e4e11fa20d6677b70ce6618a8653a1f3520djeffhao 103dd79e4e11fa20d6677b70ce6618a8653a1f3520djeffhao /** {@inheritDoc} */ 104dd79e4e11fa20d6677b70ce6618a8653a1f3520djeffhao @Override 105f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project public void writeTo(AnnotatedOutput out, DalvInsn insn) { 106f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project RegisterSpecList regs = insn.getRegisters(); 107f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project int cpi = ((CstInsn) insn).getIndex(); 108f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 109f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project write(out, 110f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project opcodeUnit(insn, 111f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project makeByte(regs.get(0).getReg(), regs.get(1).getReg())), 112f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project (short) cpi); 113f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 114f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project} 115