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comparison agent/src/share/classes/sun/jvm/hotspot/utilities/ConstantTag.java @ 3838:6a991dcb52bb

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7012081: JSR 292: SA-JDI can't read MH/MT/Indy ConstantPool entries Reviewed-by: kvn, twisti, jrose
author never
date Thu, 21 Jul 2011 08:38:25 -0700
parents ed69575596ac
children da91efe96a93
comparison
equal deleted inserted replaced
3837:43f9d800f276 3838:6a991dcb52bb
1 /* 1 /*
2 * Copyright (c) 2001, 2010, Oracle and/or its affiliates. All rights reserved. 2 * Copyright (c) 2001, 2011, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 * 4 *
5 * This code is free software; you can redistribute it and/or modify it 5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as 6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. 7 * published by the Free Software Foundation.
22 * 22 *
23 */ 23 */
24 24
25 package sun.jvm.hotspot.utilities; 25 package sun.jvm.hotspot.utilities;
26 26
27 import sun.jvm.hotspot.runtime.BasicType;
28
27 public class ConstantTag { 29 public class ConstantTag {
28 // These replicated from the VM to save space 30 // These replicated from the VM to save space
29 private static int JVM_CONSTANT_Utf8 = 1; 31 private static final int JVM_CONSTANT_Utf8 = 1;
30 private static int JVM_CONSTANT_Unicode = 2; // unused 32 private static final int JVM_CONSTANT_Unicode = 2; // unused
31 private static int JVM_CONSTANT_Integer = 3; 33 private static final int JVM_CONSTANT_Integer = 3;
32 private static int JVM_CONSTANT_Float = 4; 34 private static final int JVM_CONSTANT_Float = 4;
33 private static int JVM_CONSTANT_Long = 5; 35 private static final int JVM_CONSTANT_Long = 5;
34 private static int JVM_CONSTANT_Double = 6; 36 private static final int JVM_CONSTANT_Double = 6;
35 private static int JVM_CONSTANT_Class = 7; 37 private static final int JVM_CONSTANT_Class = 7;
36 private static int JVM_CONSTANT_String = 8; 38 private static final int JVM_CONSTANT_String = 8;
37 private static int JVM_CONSTANT_Fieldref = 9; 39 private static final int JVM_CONSTANT_Fieldref = 9;
38 private static int JVM_CONSTANT_Methodref = 10; 40 private static final int JVM_CONSTANT_Methodref = 10;
39 private static int JVM_CONSTANT_InterfaceMethodref = 11; 41 private static final int JVM_CONSTANT_InterfaceMethodref = 11;
40 private static int JVM_CONSTANT_NameAndType = 12; 42 private static final int JVM_CONSTANT_NameAndType = 12;
41 private static int JVM_CONSTANT_MethodHandle = 15; // JSR 292 43 private static final int JVM_CONSTANT_MethodHandle = 15; // JSR 292
42 private static int JVM_CONSTANT_MethodType = 16; // JSR 292 44 private static final int JVM_CONSTANT_MethodType = 16; // JSR 292
43 // static int JVM_CONSTANT_(unused) = 17; // JSR 292 early drafts only 45 // static final int JVM_CONSTANT_(unused) = 17; // JSR 292 early drafts only
44 private static int JVM_CONSTANT_InvokeDynamic = 18; // JSR 292 46 private static final int JVM_CONSTANT_InvokeDynamic = 18; // JSR 292
45 private static int JVM_CONSTANT_Invalid = 0; // For bad value initialization 47 private static final int JVM_CONSTANT_Invalid = 0; // For bad value initialization
46 private static int JVM_CONSTANT_UnresolvedClass = 100; // Temporary tag until actual use 48 private static final int JVM_CONSTANT_UnresolvedClass = 100; // Temporary tag until actual use
47 private static int JVM_CONSTANT_ClassIndex = 101; // Temporary tag while constructing constant pool 49 private static final int JVM_CONSTANT_ClassIndex = 101; // Temporary tag while constructing constant pool
48 private static int JVM_CONSTANT_UnresolvedString = 102; // Temporary tag until actual use 50 private static final int JVM_CONSTANT_UnresolvedString = 102; // Temporary tag until actual use
49 private static int JVM_CONSTANT_StringIndex = 103; // Temporary tag while constructing constant pool 51 private static final int JVM_CONSTANT_StringIndex = 103; // Temporary tag while constructing constant pool
50 private static int JVM_CONSTANT_UnresolvedClassInError = 104; // Resolution failed 52 private static final int JVM_CONSTANT_UnresolvedClassInError = 104; // Resolution failed
51 private static int JVM_CONSTANT_Object = 105; // Required for BoundMethodHandle arguments. 53 private static final int JVM_CONSTANT_Object = 105; // Required for BoundMethodHandle arguments.
52 54
53 // JVM_CONSTANT_MethodHandle subtypes //FIXME: connect these to data structure 55 // JVM_CONSTANT_MethodHandle subtypes //FIXME: connect these to data structure
54 private static int JVM_REF_getField = 1; 56 private static int JVM_REF_getField = 1;
55 private static int JVM_REF_getStatic = 2; 57 private static int JVM_REF_getStatic = 2;
56 private static int JVM_REF_putField = 3; 58 private static int JVM_REF_putField = 3;
97 public boolean isObject() { return tag == JVM_CONSTANT_Object; } 99 public boolean isObject() { return tag == JVM_CONSTANT_Object; }
98 100
99 public boolean isKlassReference() { return isKlassIndex() || isUnresolvedKlass(); } 101 public boolean isKlassReference() { return isKlassIndex() || isUnresolvedKlass(); }
100 public boolean isFieldOrMethod() { return isField() || isMethod() || isInterfaceMethod(); } 102 public boolean isFieldOrMethod() { return isField() || isMethod() || isInterfaceMethod(); }
101 public boolean isSymbol() { return isUtf8(); } 103 public boolean isSymbol() { return isUtf8(); }
104
105 public BasicType basicType() {
106 switch (tag) {
107 case JVM_CONSTANT_Integer :
108 return BasicType.T_INT;
109 case JVM_CONSTANT_Float :
110 return BasicType.T_FLOAT;
111 case JVM_CONSTANT_Long :
112 return BasicType.T_LONG;
113 case JVM_CONSTANT_Double :
114 return BasicType.T_DOUBLE;
115
116 case JVM_CONSTANT_Class :
117 case JVM_CONSTANT_String :
118 case JVM_CONSTANT_UnresolvedClass :
119 case JVM_CONSTANT_UnresolvedClassInError :
120 case JVM_CONSTANT_ClassIndex :
121 case JVM_CONSTANT_UnresolvedString :
122 case JVM_CONSTANT_StringIndex :
123 case JVM_CONSTANT_MethodHandle :
124 case JVM_CONSTANT_MethodType :
125 case JVM_CONSTANT_Object :
126 return BasicType.T_OBJECT;
127 default:
128 throw new InternalError("unexpected tag: " + tag);
129 }
130 }
102 } 131 }