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.DalvInsn; 20f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Projectimport com.android.dx.dex.code.InsnFormat; 21f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Projectimport com.android.dx.dex.code.TargetInsn; 22f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Projectimport com.android.dx.rop.code.RegisterSpecList; 23f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Projectimport com.android.dx.util.AnnotatedOutput; 24f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 25dd79e4e11fa20d6677b70ce6618a8653a1f3520djeffhaoimport java.util.BitSet; 26dd79e4e11fa20d6677b70ce6618a8653a1f3520djeffhao 27f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project/** 2899409883d9c4c0ffb49b070ce307bb33a9dfe9f1The Android Open Source Project * Instruction format {@code 22t}. See the instruction format spec 29f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * for details. 30f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 31f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Projectpublic final class Form22t extends InsnFormat { 3299409883d9c4c0ffb49b070ce307bb33a9dfe9f1The Android Open Source Project /** {@code non-null;} unique instance of this class */ 33f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project public static final InsnFormat THE_ONE = new Form22t(); 34f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 35f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /** 36f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * Constructs an instance. This class is not publicly 37f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * instantiable. Use {@link #THE_ONE}. 38f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 39f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project private Form22t() { 40f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project // This space intentionally left blank. 41f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 42f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 43f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /** {@inheritDoc} */ 44f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project @Override 45f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project public String insnArgString(DalvInsn insn) { 46f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project RegisterSpecList regs = insn.getRegisters(); 47f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return regs.get(0).regString() + ", " + regs.get(1).regString() + 48f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project ", " + branchString(insn); 49f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 50f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 51f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /** {@inheritDoc} */ 52f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project @Override 53f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project public String insnCommentString(DalvInsn insn, boolean noteIndices) { 54f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return branchComment(insn); 55f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 56f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 57f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /** {@inheritDoc} */ 58f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project @Override 59f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project public int codeSize() { 60f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return 2; 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 boolean isCompatible(DalvInsn insn) { 66f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project RegisterSpecList regs = insn.getRegisters(); 67f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 68f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project if (!((insn instanceof TargetInsn) && 69f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project (regs.size() == 2) && 70f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project unsignedFitsInNibble(regs.get(0).getReg()) && 71f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project unsignedFitsInNibble(regs.get(1).getReg()))) { 72f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return false; 73f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 74f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 75f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project TargetInsn ti = (TargetInsn) insn; 76f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return ti.hasTargetOffset() ? branchFits(ti) : true; 77f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 78f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 79f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /** {@inheritDoc} */ 80f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project @Override 81dd79e4e11fa20d6677b70ce6618a8653a1f3520djeffhao public BitSet compatibleRegs(DalvInsn insn) { 82dd79e4e11fa20d6677b70ce6618a8653a1f3520djeffhao RegisterSpecList regs = insn.getRegisters(); 83dd79e4e11fa20d6677b70ce6618a8653a1f3520djeffhao BitSet bits = new BitSet(2); 84dd79e4e11fa20d6677b70ce6618a8653a1f3520djeffhao 85dd79e4e11fa20d6677b70ce6618a8653a1f3520djeffhao bits.set(0, unsignedFitsInNibble(regs.get(0).getReg())); 86dd79e4e11fa20d6677b70ce6618a8653a1f3520djeffhao bits.set(1, unsignedFitsInNibble(regs.get(1).getReg())); 87dd79e4e11fa20d6677b70ce6618a8653a1f3520djeffhao return bits; 88dd79e4e11fa20d6677b70ce6618a8653a1f3520djeffhao } 89dd79e4e11fa20d6677b70ce6618a8653a1f3520djeffhao 90dd79e4e11fa20d6677b70ce6618a8653a1f3520djeffhao /** {@inheritDoc} */ 91dd79e4e11fa20d6677b70ce6618a8653a1f3520djeffhao @Override 92f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project public boolean branchFits(TargetInsn insn) { 93f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project int offset = insn.getTargetOffset(); 94f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 95f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project // Note: A zero offset would fit, but it is prohibited by the spec. 96f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project return (offset != 0) && signedFitsInShort(offset); 97f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 98f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 99f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /** {@inheritDoc} */ 100f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project @Override 101f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project public void writeTo(AnnotatedOutput out, DalvInsn insn) { 102f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project RegisterSpecList regs = insn.getRegisters(); 103f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project int offset = ((TargetInsn) insn).getTargetOffset(); 104f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 105f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project write(out, 106f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project opcodeUnit(insn, 107f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project makeByte(regs.get(0).getReg(), regs.get(1).getReg())), 108f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project (short) offset); 109f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 110f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project} 111