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1 /*
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2 * Copyright 1997-2005 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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20 * CA 95054 USA or visit www.sun.com if you need additional information or
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21 * have any questions.
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22 *
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23 */
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24
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25 // Bytecodes specifies all bytecodes used in the VM and
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26 // provides utility functions to get bytecode attributes.
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27
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28 // NOTE: replicated in SA in vm/agent/sun/jvm/hotspot/interpreter/Bytecodes.java
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29 class Bytecodes: AllStatic {
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30 public:
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31 enum Code {
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32 _illegal = -1,
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33
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34 // Java bytecodes
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35 _nop = 0, // 0x00
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36 _aconst_null = 1, // 0x01
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37 _iconst_m1 = 2, // 0x02
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38 _iconst_0 = 3, // 0x03
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39 _iconst_1 = 4, // 0x04
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40 _iconst_2 = 5, // 0x05
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41 _iconst_3 = 6, // 0x06
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42 _iconst_4 = 7, // 0x07
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43 _iconst_5 = 8, // 0x08
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44 _lconst_0 = 9, // 0x09
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45 _lconst_1 = 10, // 0x0a
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46 _fconst_0 = 11, // 0x0b
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47 _fconst_1 = 12, // 0x0c
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48 _fconst_2 = 13, // 0x0d
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49 _dconst_0 = 14, // 0x0e
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50 _dconst_1 = 15, // 0x0f
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51 _bipush = 16, // 0x10
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52 _sipush = 17, // 0x11
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53 _ldc = 18, // 0x12
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54 _ldc_w = 19, // 0x13
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55 _ldc2_w = 20, // 0x14
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56 _iload = 21, // 0x15
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57 _lload = 22, // 0x16
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58 _fload = 23, // 0x17
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59 _dload = 24, // 0x18
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60 _aload = 25, // 0x19
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61 _iload_0 = 26, // 0x1a
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62 _iload_1 = 27, // 0x1b
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63 _iload_2 = 28, // 0x1c
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64 _iload_3 = 29, // 0x1d
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65 _lload_0 = 30, // 0x1e
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66 _lload_1 = 31, // 0x1f
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67 _lload_2 = 32, // 0x20
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68 _lload_3 = 33, // 0x21
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69 _fload_0 = 34, // 0x22
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70 _fload_1 = 35, // 0x23
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71 _fload_2 = 36, // 0x24
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72 _fload_3 = 37, // 0x25
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73 _dload_0 = 38, // 0x26
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74 _dload_1 = 39, // 0x27
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75 _dload_2 = 40, // 0x28
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76 _dload_3 = 41, // 0x29
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77 _aload_0 = 42, // 0x2a
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78 _aload_1 = 43, // 0x2b
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79 _aload_2 = 44, // 0x2c
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80 _aload_3 = 45, // 0x2d
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81 _iaload = 46, // 0x2e
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82 _laload = 47, // 0x2f
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83 _faload = 48, // 0x30
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84 _daload = 49, // 0x31
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85 _aaload = 50, // 0x32
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86 _baload = 51, // 0x33
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87 _caload = 52, // 0x34
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88 _saload = 53, // 0x35
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89 _istore = 54, // 0x36
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90 _lstore = 55, // 0x37
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91 _fstore = 56, // 0x38
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92 _dstore = 57, // 0x39
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93 _astore = 58, // 0x3a
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94 _istore_0 = 59, // 0x3b
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95 _istore_1 = 60, // 0x3c
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96 _istore_2 = 61, // 0x3d
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97 _istore_3 = 62, // 0x3e
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98 _lstore_0 = 63, // 0x3f
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99 _lstore_1 = 64, // 0x40
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100 _lstore_2 = 65, // 0x41
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101 _lstore_3 = 66, // 0x42
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102 _fstore_0 = 67, // 0x43
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103 _fstore_1 = 68, // 0x44
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104 _fstore_2 = 69, // 0x45
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105 _fstore_3 = 70, // 0x46
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106 _dstore_0 = 71, // 0x47
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107 _dstore_1 = 72, // 0x48
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108 _dstore_2 = 73, // 0x49
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109 _dstore_3 = 74, // 0x4a
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110 _astore_0 = 75, // 0x4b
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111 _astore_1 = 76, // 0x4c
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112 _astore_2 = 77, // 0x4d
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113 _astore_3 = 78, // 0x4e
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114 _iastore = 79, // 0x4f
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115 _lastore = 80, // 0x50
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116 _fastore = 81, // 0x51
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117 _dastore = 82, // 0x52
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118 _aastore = 83, // 0x53
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119 _bastore = 84, // 0x54
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120 _castore = 85, // 0x55
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121 _sastore = 86, // 0x56
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122 _pop = 87, // 0x57
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123 _pop2 = 88, // 0x58
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124 _dup = 89, // 0x59
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125 _dup_x1 = 90, // 0x5a
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126 _dup_x2 = 91, // 0x5b
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127 _dup2 = 92, // 0x5c
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128 _dup2_x1 = 93, // 0x5d
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129 _dup2_x2 = 94, // 0x5e
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130 _swap = 95, // 0x5f
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131 _iadd = 96, // 0x60
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132 _ladd = 97, // 0x61
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133 _fadd = 98, // 0x62
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134 _dadd = 99, // 0x63
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135 _isub = 100, // 0x64
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136 _lsub = 101, // 0x65
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137 _fsub = 102, // 0x66
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138 _dsub = 103, // 0x67
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139 _imul = 104, // 0x68
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140 _lmul = 105, // 0x69
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141 _fmul = 106, // 0x6a
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142 _dmul = 107, // 0x6b
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143 _idiv = 108, // 0x6c
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144 _ldiv = 109, // 0x6d
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145 _fdiv = 110, // 0x6e
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146 _ddiv = 111, // 0x6f
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147 _irem = 112, // 0x70
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148 _lrem = 113, // 0x71
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149 _frem = 114, // 0x72
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150 _drem = 115, // 0x73
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151 _ineg = 116, // 0x74
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152 _lneg = 117, // 0x75
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153 _fneg = 118, // 0x76
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154 _dneg = 119, // 0x77
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155 _ishl = 120, // 0x78
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156 _lshl = 121, // 0x79
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157 _ishr = 122, // 0x7a
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158 _lshr = 123, // 0x7b
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159 _iushr = 124, // 0x7c
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160 _lushr = 125, // 0x7d
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161 _iand = 126, // 0x7e
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162 _land = 127, // 0x7f
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163 _ior = 128, // 0x80
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164 _lor = 129, // 0x81
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165 _ixor = 130, // 0x82
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166 _lxor = 131, // 0x83
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167 _iinc = 132, // 0x84
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168 _i2l = 133, // 0x85
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169 _i2f = 134, // 0x86
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170 _i2d = 135, // 0x87
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171 _l2i = 136, // 0x88
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172 _l2f = 137, // 0x89
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173 _l2d = 138, // 0x8a
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174 _f2i = 139, // 0x8b
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175 _f2l = 140, // 0x8c
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176 _f2d = 141, // 0x8d
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177 _d2i = 142, // 0x8e
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178 _d2l = 143, // 0x8f
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179 _d2f = 144, // 0x90
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180 _i2b = 145, // 0x91
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181 _i2c = 146, // 0x92
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182 _i2s = 147, // 0x93
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183 _lcmp = 148, // 0x94
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184 _fcmpl = 149, // 0x95
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185 _fcmpg = 150, // 0x96
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186 _dcmpl = 151, // 0x97
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187 _dcmpg = 152, // 0x98
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188 _ifeq = 153, // 0x99
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189 _ifne = 154, // 0x9a
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190 _iflt = 155, // 0x9b
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191 _ifge = 156, // 0x9c
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192 _ifgt = 157, // 0x9d
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193 _ifle = 158, // 0x9e
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194 _if_icmpeq = 159, // 0x9f
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195 _if_icmpne = 160, // 0xa0
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196 _if_icmplt = 161, // 0xa1
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197 _if_icmpge = 162, // 0xa2
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198 _if_icmpgt = 163, // 0xa3
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199 _if_icmple = 164, // 0xa4
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200 _if_acmpeq = 165, // 0xa5
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201 _if_acmpne = 166, // 0xa6
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202 _goto = 167, // 0xa7
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203 _jsr = 168, // 0xa8
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204 _ret = 169, // 0xa9
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205 _tableswitch = 170, // 0xaa
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206 _lookupswitch = 171, // 0xab
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207 _ireturn = 172, // 0xac
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208 _lreturn = 173, // 0xad
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209 _freturn = 174, // 0xae
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210 _dreturn = 175, // 0xaf
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211 _areturn = 176, // 0xb0
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212 _return = 177, // 0xb1
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213 _getstatic = 178, // 0xb2
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214 _putstatic = 179, // 0xb3
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215 _getfield = 180, // 0xb4
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216 _putfield = 181, // 0xb5
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217 _invokevirtual = 182, // 0xb6
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218 _invokespecial = 183, // 0xb7
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219 _invokestatic = 184, // 0xb8
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220 _invokeinterface = 185, // 0xb9
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221 _xxxunusedxxx = 186, // 0xba
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222 _new = 187, // 0xbb
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223 _newarray = 188, // 0xbc
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224 _anewarray = 189, // 0xbd
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225 _arraylength = 190, // 0xbe
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226 _athrow = 191, // 0xbf
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227 _checkcast = 192, // 0xc0
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228 _instanceof = 193, // 0xc1
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229 _monitorenter = 194, // 0xc2
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230 _monitorexit = 195, // 0xc3
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231 _wide = 196, // 0xc4
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232 _multianewarray = 197, // 0xc5
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233 _ifnull = 198, // 0xc6
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234 _ifnonnull = 199, // 0xc7
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235 _goto_w = 200, // 0xc8
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236 _jsr_w = 201, // 0xc9
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237 _breakpoint = 202, // 0xca
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238
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239 number_of_java_codes,
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240
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241 // JVM bytecodes
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242 _fast_agetfield = number_of_java_codes,
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243 _fast_bgetfield ,
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244 _fast_cgetfield ,
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245 _fast_dgetfield ,
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246 _fast_fgetfield ,
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247 _fast_igetfield ,
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248 _fast_lgetfield ,
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249 _fast_sgetfield ,
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250
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251 _fast_aputfield ,
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252 _fast_bputfield ,
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253 _fast_cputfield ,
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254 _fast_dputfield ,
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255 _fast_fputfield ,
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256 _fast_iputfield ,
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257 _fast_lputfield ,
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258 _fast_sputfield ,
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259
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260 _fast_aload_0 ,
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261 _fast_iaccess_0 ,
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262 _fast_aaccess_0 ,
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263 _fast_faccess_0 ,
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264
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265 _fast_iload ,
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266 _fast_iload2 ,
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267 _fast_icaload ,
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268
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269 _fast_invokevfinal ,
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270 _fast_linearswitch ,
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271 _fast_binaryswitch ,
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272
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273 _return_register_finalizer ,
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274
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275 _shouldnotreachhere, // For debugging
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276
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277 // Platform specific JVM bytecodes
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278 #include "incls/_bytecodes_pd.hpp.incl"
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279
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280 number_of_codes
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281 };
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282
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283 private:
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284 static bool _is_initialized;
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285 static const char* _name [number_of_codes];
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286 static const char* _format [number_of_codes];
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287 static const char* _wide_format [number_of_codes];
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288 static BasicType _result_type [number_of_codes];
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289 static s_char _depth [number_of_codes];
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290 static u_char _length [number_of_codes];
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291 static bool _can_trap [number_of_codes];
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292 static Code _java_code [number_of_codes];
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293 static bool _can_rewrite [number_of_codes];
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294
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295 static void def(Code code, const char* name, const char* format, const char* wide_format, BasicType result_type, int depth, bool can_trap);
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296 static void def(Code code, const char* name, const char* format, const char* wide_format, BasicType result_type, int depth, bool can_trap, Code java_code);
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297 static void pd_initialize(); // platform specific initialization
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298 static Code pd_base_code_for(Code code); // platform specific base_code_for implementation
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299
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300 public:
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301 // Conversion
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302 static void check (Code code) { assert(is_defined(code), "illegal code"); }
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303 static void wide_check (Code code) { assert(wide_is_defined(code), "illegal code"); }
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304 static Code cast (int code) { return (Code)code; }
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305
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306
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307 // Fetch a bytecode, hiding breakpoints as necessary:
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308 static Code code_at(address bcp, methodOop method = NULL) {
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309 Code code = cast(*bcp); return (code != _breakpoint) ? code : non_breakpoint_code_at(bcp, method);
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310 }
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311 static Code java_code_at(address bcp, methodOop method = NULL) {
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312 return java_code(code_at(bcp, method));
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313 }
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314
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315 // Fetch a bytecode or a breakpoint:
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316 static Code code_or_bp_at(address bcp) { return (Code)cast(*bcp); }
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317
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318 static Code code_at(methodOop method, int bci);
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319 static bool is_active_breakpoint_at(address bcp) { return (Code)*bcp == _breakpoint; }
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320
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321 // find a bytecode, behind a breakpoint if necessary:
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322 static Code non_breakpoint_code_at(address bcp, methodOop method = NULL);
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323
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324 // Bytecode attributes
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325 static bool is_defined (int code) { return 0 <= code && code < number_of_codes && _format[code] != NULL; }
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326 static bool wide_is_defined(int code) { return is_defined(code) && _wide_format[code] != NULL; }
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327 static const char* name (Code code) { check(code); return _name [code]; }
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328 static const char* format (Code code) { check(code); return _format [code]; }
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329 static const char* wide_format (Code code) { return _wide_format[code]; }
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330 static BasicType result_type (Code code) { check(code); return _result_type [code]; }
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331 static int depth (Code code) { check(code); return _depth [code]; }
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332 static int length_for (Code code) { return _length[code]; }
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333 static bool can_trap (Code code) { check(code); return _can_trap [code]; }
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334 static Code java_code (Code code) { check(code); return _java_code [code]; }
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335 static bool can_rewrite (Code code) { check(code); return _can_rewrite [code]; }
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336 static int wide_length_for(Code code) {
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337 if (!is_defined(code)) {
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338 return 0;
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339 }
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340 const char* wf = wide_format(code);
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341 return (wf == NULL) ? 0 : (int)strlen(wf);
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342 }
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343 static int special_length_at(address bcp);
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344 static int raw_special_length_at(address bcp);
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345 static int length_at (address bcp) { int l = length_for(code_at(bcp)); return l > 0 ? l : special_length_at(bcp); }
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346 static int java_length_at (address bcp) { int l = length_for(java_code_at(bcp)); return l > 0 ? l : special_length_at(bcp); }
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347 static bool is_java_code (Code code) { return 0 <= code && code < number_of_java_codes; }
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348
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349 static bool is_aload (Code code) { return (code == _aload || code == _aload_0 || code == _aload_1
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350 || code == _aload_2 || code == _aload_3); }
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351 static bool is_astore (Code code) { return (code == _astore || code == _astore_0 || code == _astore_1
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352 || code == _astore_2 || code == _astore_3); }
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353
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354 static bool is_zero_const (Code code) { return (code == _aconst_null || code == _iconst_0
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355 || code == _fconst_0 || code == _dconst_0); }
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356 // Initialization
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357 static void initialize ();
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358 };
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