1 /* 2 * Copyright (C) 2014 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package dexfuzz.program; 18 19 import dexfuzz.rawdex.Instruction; 20 21 /** 22 * Base class that is a thin wrapper for Instructions currently, also tracking location 23 * as the instruction is moved around. 24 */ 25 public class MInsn { 26 /** 27 * The raw DEX instruction that this instruction represents. 28 */ 29 public Instruction insn; 30 31 32 /** 33 * The location of this instruction, as an offset in code words from the beginning. 34 * May become invalid if instructions around it are mutated. 35 */ 36 public int location; 37 38 /** 39 * Denotes if the currently associated location can be trusted. 40 */ 41 public boolean locationUpdated; 42 43 /** 44 * Clone this MInsn, and clone the wrapped Instruction. 45 */ 46 public MInsn clone() { 47 MInsn newInsn = new MInsn(); 48 newInsn.insn = insn.clone(); 49 // It is the responsibility of the cloner to update these values. 50 newInsn.location = location; 51 newInsn.locationUpdated = locationUpdated; 52 return newInsn; 53 } 54 55 /** 56 * Get the String representation of an instruction. 57 */ 58 public String toString() { 59 return String.format("{0x%04x%s: %s}", 60 location, 61 (locationUpdated) ? "!" : "", 62 insn.toString()); 63 } 64 } 65
