1579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson/* 2579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson * Copyright (C) 2007 The Android Open Source Project 3579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson * 4579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson * Licensed under the Apache License, Version 2.0 (the "License"); 5579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson * you may not use this file except in compliance with the License. 6579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson * You may obtain a copy of the License at 7579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson * 8579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson * http://www.apache.org/licenses/LICENSE-2.0 9579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson * 10579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson * Unless required by applicable law or agreed to in writing, software 11579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson * distributed under the License is distributed on an "AS IS" BASIS, 12579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson * See the License for the specific language governing permissions and 14579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson * limitations under the License. 15579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson */ 16579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson 17579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilsonpackage com.android.dx.dex.code; 18579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson 19579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilsonimport com.android.dx.io.Opcodes; 20579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilsonimport com.android.dx.rop.cst.Constant; 21579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilsonimport com.android.dx.rop.cst.CstBaseMethodRef; 22579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilsonimport com.android.dx.util.AnnotatedOutput; 23579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilsonimport com.android.dx.util.ExceptionWithContext; 24579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilsonimport com.android.dx.util.FixedSizeList; 25579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilsonimport com.android.dx.util.IndentingWriter; 26579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson 27579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilsonimport java.io.IOException; 28579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilsonimport java.io.OutputStream; 29579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilsonimport java.io.OutputStreamWriter; 30579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilsonimport java.io.Writer; 31579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilsonimport java.util.ArrayList; 32579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson 33579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson/** 34579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson * List of {@link DalvInsn} instances. 35579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson */ 36579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilsonpublic final class DalvInsnList extends FixedSizeList { 37579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson 38579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson /** 39579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson * The amount of register space, in register units, required for this 40579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson * code block. This may be greater than the largest observed register+ 41579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson * category because the method this code block exists in may 42579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson * specify arguments that are unused by the method. 43579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson */ 44579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson private final int regCount; 45579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson 46579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson /** 47579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson * Constructs and returns an immutable instance whose elements are 48579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson * identical to the ones in the given list, in the same order. 49579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson * 50579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson * @param list {@code non-null;} the list to use for elements 51579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson * @param regCount count, in register-units, of the number of registers 52579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson * this code block requires. 53579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson * @return {@code non-null;} an appropriately-constructed instance of this 54579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson * class 55579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson */ 56579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson public static DalvInsnList makeImmutable(ArrayList<DalvInsn> list, 57579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson int regCount) { 58579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson int size = list.size(); 59579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson DalvInsnList result = new DalvInsnList(size, regCount); 60579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson 61579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson for (int i = 0; i < size; i++) { 62579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson result.set(i, list.get(i)); 63579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson } 64579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson 65579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson result.setImmutable(); 66579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson return result; 67579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson } 68579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson 69579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson /** 70579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson * Constructs an instance. All indices initially contain {@code null}. 71579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson * 72579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson * @param size the size of the list 73579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson */ 74579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson public DalvInsnList(int size, int regCount) { 75579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson super(size); 76579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson this.regCount = regCount; 77579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson } 78579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson 79579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson /** 80579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson * Gets the element at the given index. It is an error to call 81579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson * this with the index for an element which was never set; if you 82579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson * do that, this will throw {@code NullPointerException}. 83579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson * 84579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson * @param n {@code >= 0, < size();} which index 85579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson * @return {@code non-null;} element at that index 86579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson */ 87579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson public DalvInsn get(int n) { 88579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson return (DalvInsn) get0(n); 89579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson } 90579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson 91579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson /** 92579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson * Sets the instruction at the given index. 93579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson * 94579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson * @param n {@code >= 0, < size();} which index 95579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson * @param insn {@code non-null;} the instruction to set at {@code n} 96579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson */ 97579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson public void set(int n, DalvInsn insn) { 98579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson set0(n, insn); 99579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson } 100579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson 101579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson /** 102579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson * Gets the size of this instance, in 16-bit code units. This will only 103579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson * return a meaningful result if the instructions in this instance all 104579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson * have valid addresses. 105579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson * 106579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson * @return {@code >= 0;} the size 107579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson */ 108579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson public int codeSize() { 109579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson int sz = size(); 110579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson 111579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson if (sz == 0) { 112579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson return 0; 113579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson } 114579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson 115579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson DalvInsn last = get(sz - 1); 116579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson return last.getNextAddress(); 117579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson } 118579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson 119579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson /** 120579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson * Writes all the instructions in this instance to the given output 121579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson * destination. 122579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson * 123579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson * @param out {@code non-null;} where to write to 124579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson */ 125579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson public void writeTo(AnnotatedOutput out) { 126579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson int startCursor = out.getCursor(); 127579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson int sz = size(); 128579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson 129579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson if (out.annotates()) { 130579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson boolean verbose = out.isVerbose(); 131579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson 132579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson for (int i = 0; i < sz; i++) { 133579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson DalvInsn insn = (DalvInsn) get0(i); 134579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson int codeBytes = insn.codeSize() * 2; 135579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson String s; 136579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson 137579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson if ((codeBytes != 0) || verbose) { 138579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson s = insn.listingString(" ", out.getAnnotationWidth(), 139579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson true); 140579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson } else { 141579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson s = null; 142579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson } 143579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson 144579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson if (s != null) { 145579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson out.annotate(codeBytes, s); 146579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson } else if (codeBytes != 0) { 147579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson out.annotate(codeBytes, ""); 148579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson } 149579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson } 150579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson } 151579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson 152579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson for (int i = 0; i < sz; i++) { 153579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson DalvInsn insn = (DalvInsn) get0(i); 154579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson try { 155579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson insn.writeTo(out); 156579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson } catch (RuntimeException ex) { 157579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson throw ExceptionWithContext.withContext(ex, 158579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson "...while writing " + insn); 159579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson } 160579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson } 161579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson 162579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson // Sanity check of the amount written. 163579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson int written = (out.getCursor() - startCursor) / 2; 164579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson if (written != codeSize()) { 165579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson throw new RuntimeException("write length mismatch; expected " + 166579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson codeSize() + " but actually wrote " + written); 167579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson } 168579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson } 169579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson 170579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson /** 171579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson * Gets the minimum required register count implied by this 172579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson * instance. This includes any unused parameters that could 173579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson * potentially be at the top of the register space. 174579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson * @return {@code >= 0;} the required registers size 175579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson */ 176579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson public int getRegistersSize() { 177579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson return regCount; 178579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson } 179579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson 180579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson /** 181579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson * Gets the size of the outgoing arguments area required by this 182579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson * method. This is equal to the largest argument word count of any 183579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson * method referred to by this instance. 184579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson * 185579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson * @return {@code >= 0;} the required outgoing arguments size 186579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson */ 187579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson public int getOutsSize() { 188579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson int sz = size(); 189579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson int result = 0; 190579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson 191579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson for (int i = 0; i < sz; i++) { 192579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson DalvInsn insn = (DalvInsn) get0(i); 193579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson 194579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson if (!(insn instanceof CstInsn)) { 195579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson continue; 196579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson } 197579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson 198579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson Constant cst = ((CstInsn) insn).getConstant(); 199579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson 200579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson if (!(cst instanceof CstBaseMethodRef)) { 201579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson continue; 202579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson } 203579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson 204579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson boolean isStatic = 205579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson (insn.getOpcode().getFamily() == Opcodes.INVOKE_STATIC); 206579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson int count = 207579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson ((CstBaseMethodRef) cst).getParameterWordCount(isStatic); 208579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson 209579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson if (count > result) { 210579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson result = count; 211579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson } 212579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson } 213579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson 214579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson return result; 215579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson } 216579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson 217579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson /** 218579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson * Does a human-friendly dump of this instance. 219579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson * 220579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson * @param out {@code non-null;} where to dump 221579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson * @param prefix {@code non-null;} prefix to attach to each line of output 222579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson * @param verbose whether to be verbose; verbose output includes 223579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson * lines for zero-size instructions and explicit constant pool indices 224579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson */ 225579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson public void debugPrint(Writer out, String prefix, boolean verbose) { 226579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson IndentingWriter iw = new IndentingWriter(out, 0, prefix); 227579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson int sz = size(); 228579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson 229579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson try { 230579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson for (int i = 0; i < sz; i++) { 231579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson DalvInsn insn = (DalvInsn) get0(i); 232579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson String s; 233579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson 234579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson if ((insn.codeSize() != 0) || verbose) { 235579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson s = insn.listingString("", 0, verbose); 236579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson } else { 237579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson s = null; 238579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson } 239579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson 240579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson if (s != null) { 241579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson iw.write(s); 242579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson } 243579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson } 244579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson 245579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson iw.flush(); 246579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson } catch (IOException ex) { 247579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson throw new RuntimeException(ex); 248579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson } 249579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson } 250579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson 251579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson /** 252579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson * Does a human-friendly dump of this instance. 253579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson * 254579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson * @param out {@code non-null;} where to dump 255579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson * @param prefix {@code non-null;} prefix to attach to each line of output 256579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson * @param verbose whether to be verbose; verbose output includes 257579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson * lines for zero-size instructions 258579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson */ 259579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson public void debugPrint(OutputStream out, String prefix, boolean verbose) { 260579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson Writer w = new OutputStreamWriter(out); 261579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson debugPrint(w, prefix, verbose); 262579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson 263579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson try { 264579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson w.flush(); 265579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson } catch (IOException ex) { 266579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson throw new RuntimeException(ex); 267579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson } 268579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson } 269579d7739c53a2707ad711a2d2cae46d7d782f06Jesse Wilson} 270