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.ssa; 18f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 19f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Projectimport com.android.dx.rop.code.RegisterSpec; 20f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Projectimport com.android.dx.rop.code.RegisterSpecList; 21f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 22f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project/** 23de75089fb7216d19e9c22cce4dc62a49513477d3Carl Shapiro * Represents a mapping between two register numbering schemes. 2499409883d9c4c0ffb49b070ce307bb33a9dfe9f1The Android Open Source Project * Subclasses of this may be mutable, and as such the mapping provided 2599409883d9c4c0ffb49b070ce307bb33a9dfe9f1The Android Open Source Project * is only valid for the lifetime of the method call in which 2699409883d9c4c0ffb49b070ce307bb33a9dfe9f1The Android Open Source Project * instances of this class are passed. 27f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 28f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Projectpublic abstract class RegisterMapper { 29f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /** 30f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * Gets the count of registers (really, the total register width, since 31f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * category width is counted) in the new namespace. 32f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * @return >= 0 width of new namespace. 33f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 34f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project public abstract int getNewRegisterCount(); 35f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 36f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /** 37f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * @param registerSpec old register 38f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * @return register in new space 39f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 40f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project public abstract RegisterSpec map(RegisterSpec registerSpec); 41f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 42f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project /** 43f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * 44f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * @param sources old register list 45f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project * @return new mapped register list, or old if nothing has changed. 46f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project */ 47f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project public final RegisterSpecList map(RegisterSpecList sources) { 48f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project int sz = sources.size(); 4999409883d9c4c0ffb49b070ce307bb33a9dfe9f1The Android Open Source Project RegisterSpecList newSources = new RegisterSpecList(sz); 5099409883d9c4c0ffb49b070ce307bb33a9dfe9f1The Android Open Source Project 51f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project for (int i = 0; i < sz; i++) { 52f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project newSources.set(i, map(sources.get(i))); 53f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 54f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project 55f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project newSources.setImmutable(); 5699409883d9c4c0ffb49b070ce307bb33a9dfe9f1The Android Open Source Project 5799409883d9c4c0ffb49b070ce307bb33a9dfe9f1The Android Open Source Project // Return the old sources if nothing has changed. 5899409883d9c4c0ffb49b070ce307bb33a9dfe9f1The Android Open Source Project return newSources.equals(sources) ? sources : newSources; 59f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project } 60f6c387128427e121477c1b32ad35cdcaa5101ba3The Android Open Source Project} 61