annotate agent/src/share/classes/sun/jvm/hotspot/interpreter/BytecodeInvoke.java @ 2042:0a8e0d4345b3 hs20-b05 jdk7-b124

7010068: Update all 2010 Oracle-changed OpenJDK files to have the proper copyright dates - first pass Summary: Update the copyright to be 2010 on all changed files in OpenJDK Reviewed-by: jcoomes
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date Mon, 03 Jan 2011 15:30:05 -0800
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1 /*
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2 * Copyright (c) 2001, 2010, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
c18cbe5936b8 6941466: Oracle rebranding changes for Hotspot repositories
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21 * questions.
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22 *
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23 */
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24
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25 package sun.jvm.hotspot.interpreter;
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26
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27 import sun.jvm.hotspot.oops.*;
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28 import sun.jvm.hotspot.runtime.*;
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29 import sun.jvm.hotspot.utilities.*;
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30
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31 public class BytecodeInvoke extends BytecodeWithCPIndex {
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32 BytecodeInvoke(Method method, int bci) {
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33 super(method, bci);
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34 }
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35
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36 public static BytecodeInvoke at(Method method, int bci) {
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37 BytecodeInvoke b = new BytecodeInvoke(method, bci);
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38 if (Assert.ASSERTS_ENABLED) {
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39 b.verify();
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40 }
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41 return b;
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42 }
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43
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44 /** Like at, but returns null if the BCI is not at an invoke */
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45 public static BytecodeInvoke atCheck(Method method, int bci) {
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46 BytecodeInvoke b = new BytecodeInvoke(method, bci);
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47 return (b.isValid() ? b : null);
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48 }
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49
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50 public static BytecodeInvoke at(BytecodeStream bcs) {
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51 return new BytecodeInvoke(bcs.method(), bcs.bci());
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52 }
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53
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54 // returns the name of the invoked method
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55 public Symbol name() {
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56 ConstantPool cp = method().getConstants();
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57 if (isInvokedynamic()) {
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58 int[] nt = cp.getNameAndTypeAt(indexForFieldOrMethod());
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59 return cp.getSymbolAt(nt[0]);
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60 }
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61 return cp.getNameRefAt(index());
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62 }
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63
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64 // returns the signature of the invoked method
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65 public Symbol signature() {
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66 ConstantPool cp = method().getConstants();
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67 if (isInvokedynamic()) {
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68 int[] nt = cp.getNameAndTypeAt(indexForFieldOrMethod());
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69 return cp.getSymbolAt(nt[1]);
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70 }
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71 return cp.getSignatureRefAt(index());
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72 }
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73
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74 public int getSecondaryIndex() {
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75 if (isInvokedynamic()) {
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76 // change byte-ordering of 4-byte integer
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77 return VM.getVM().getBytes().swapInt(javaSignedWordAt(1));
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78 }
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79 return super.getSecondaryIndex(); // throw an error
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80 }
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81
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82 public Method getInvokedMethod() {
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83 return method().getConstants().getMethodRefAt(index());
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84 }
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85
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86 // returns the result type (see BasicType.java) of the invoke
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87 public int resultType() {
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88 ResultTypeFinder rts = new ResultTypeFinder(signature());
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89 rts.iterate();
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90 return rts.type();
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91 }
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92
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93 public int adjustedInvokeCode() {
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94 return javaCode();
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95 }
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96
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97 // "specified" method (from constant pool)
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98 // FIXME: elided for now
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99 // public Method staticTarget();
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100
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101 // Testers
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102 public boolean isInvokeinterface() { return adjustedInvokeCode() == Bytecodes._invokeinterface; }
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103 public boolean isInvokevirtual() { return adjustedInvokeCode() == Bytecodes._invokevirtual; }
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104 public boolean isInvokestatic() { return adjustedInvokeCode() == Bytecodes._invokestatic; }
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105 public boolean isInvokespecial() { return adjustedInvokeCode() == Bytecodes._invokespecial; }
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106 public boolean isInvokedynamic() { return adjustedInvokeCode() == Bytecodes._invokedynamic; }
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107
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108 public boolean isValid() { return isInvokeinterface() ||
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109 isInvokevirtual() ||
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110 isInvokestatic() ||
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111 isInvokespecial(); }
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112 public void verify() {
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113 if (Assert.ASSERTS_ENABLED) {
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114 Assert.that(isValid(), "check invoke");
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115 }
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116 }
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117
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118 public String toString() {
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119 StringBuffer buf = new StringBuffer();
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120 buf.append(getJavaBytecodeName());
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121 buf.append(spaces);
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122 buf.append('#');
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123 buf.append(Integer.toString(indexForFieldOrMethod()));
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124 if (isInvokedynamic()) {
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125 buf.append('(');
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126 buf.append(Integer.toString(getSecondaryIndex()));
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127 buf.append(')');
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128 }
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129 buf.append(" [Method ");
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130 StringBuffer sigBuf = new StringBuffer();
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131 new SignatureConverter(signature(), sigBuf).iterateReturntype();
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132 buf.append(sigBuf.toString().replace('/', '.'));
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133 buf.append(spaces);
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134 buf.append(name().asString());
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135 buf.append('(');
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136 sigBuf = new StringBuffer();
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137 new SignatureConverter(signature(), sigBuf).iterateParameters();
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138 buf.append(sigBuf.toString().replace('/', '.'));
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139 buf.append(')');
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140 buf.append(']');
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141 if (code() != javaCode()) {
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142 buf.append(spaces);
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143 buf.append('[');
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144 buf.append(getBytecodeName());
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145 buf.append(']');
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146 }
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147 return buf.toString();
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148 }
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149 }