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欢迎来到Riguz的小站！这是一个私人wiki，用来记录一些我的笔记。
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JVM bytecode list
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= Constants = Push constants into the operand stack. ; iconst_<i>: Push the int constant <i> (-1, 0, 1, 2, 3, 4 or 5) onto the operand stack. ; bipush: Push byte. iconst_<i> is equivalent to bipush <i> ; lconst_<l>: Push long. ; fconst_<f>: Push float. ; dconst_<d>: Push double. ; sipush: Push short ; ldc: Push from constant pool(int, float, or string reference, etc.) ; ldc: Push from constant pool(long, double, etc) <syntaxhighlight lang="lisp"> 00 (0x00) nop 01 (0x01) aconst_null 02 (0x02) iconst_m1 03 (0x03) iconst_0 04 (0x04) iconst_1 05 (0x05) iconst_2 06 (0x06) iconst_3 07 (0x07) iconst_4 08 (0x08) iconst_5 09 (0x09) lconst_0 10 (0x0a) lconst_1 11 (0x0b) fconst_0 12 (0x0c) fconst_1 13 (0x0d) fconst_2 14 (0x0e) dconst_0 15 (0x0f) dconst_1 16 (0x10) bipush (byte) 17 (0x11) sipush (byte1 byte2) 18 (0x12) ldc (index) 19 (0x13) ldc_w (indexbyte1 indexbyte2) 20 (0x14) ldc2_w (indexbyte1 indexbyte2) </syntaxhighlight> = Loads = Load value from local variable to operand stack. ; iload_<i>: Load int ; lload_<i>: Load long ; fload_<i>: Load float ; dload_<i>: Load double ; aload_<i>: Load reference ; iaload: Load int from array. ..., arrayref, index → both array ref and index are popped from operand stack ; laload: Load long from array ; faload: Load float from array ; daload: Load double from array ; aaload: Load reference from array ; baload: Load byte from array ; caload: Load char from array ; saload: Load short from array <syntaxhighlight lang="lisp"> 21 (0x15) iload (index) 22 (0x16) lload (index) 23 (0x17) fload (index) 24 (0x18) dload (index) 25 (0x19) aload (index) 26 (0x1a) iload_0 27 (0x1b) iload_1 28 (0x1c) iload_2 29 (0x1d) iload_3 30 (0x1e) lload_0 31 (0x1f) lload_1 32 (0x20) lload_2 33 (0x21) lload_3 34 (0x22) fload_0 35 (0x23) fload_1 36 (0x24) fload_2 37 (0x25) fload_3 38 (0x26) dload_0 39 (0x27) dload_1 40 (0x28) dload_2 41 (0x29) dload_3 42 (0x2a) aload_0 43 (0x2b) aload_1 44 (0x2c) aload_2 45 (0x2d) aload_3 46 (0x2e) iaload 47 (0x2f) laload 48 (0x30) faload 49 (0x31) daload 50 (0x32) aaload 51 (0x33) baload 52 (0x34) caload 53 (0x35) saload </syntaxhighlight> = Stores = Store value into local variable. ; istore: Store the value from the top of the operand stack(must be int) into local variable ; iastore: Store into int array. ..., arrayref, index, value → values are popped from operand stack <syntaxhighlight lang="lisp"> 54 (0x36) istore (index) 55 (0x37) lstore (index) 56 (0x38) fstore (index) 57 (0x39) dstore (index) 58 (0x3a) astore (index) 59 (0x3b) istore_0 60 (0x3c) istore_1 61 (0x3d) istore_2 62 (0x3e) istore_3 63 (0x3f) lstore_0 64 (0x40) lstore_1 65 (0x41) lstore_2 66 (0x42) lstore_3 67 (0x43) fstore_0 68 (0x44) fstore_1 69 (0x45) fstore_2 70 (0x46) fstore_3 71 (0x47) dstore_0 72 (0x48) dstore_1 73 (0x49) dstore_2 74 (0x4a) dstore_3 75 (0x4b) astore_0 76 (0x4c) astore_1 77 (0x4d) astore_2 78 (0x4e) astore_3 79 (0x4f) iastore 80 (0x50) lastore 81 (0x51) fastore 82 (0x52) dastore 83 (0x53) aastore 84 (0x54) bastore 85 (0x55) castore 86 (0x56) sastore </syntaxhighlight> = Stack = ; pop: Pop from the operand stack ; pop2: Pop the top one or two operand stack values ; dup: Duplicate the top value on the operand stack and push the duplicated value onto the operand stack. ; dup2: Duplicate the top one or two operand stack values ; swap: Swap the top two operand stack values <syntaxhighlight lang="lisp"> 87 (0x57) pop 88 (0x58) pop2 89 (0x59) dup 90 (0x5a) dup_x1 91 (0x5b) dup_x2 92 (0x5c) dup2 93 (0x5d) dup2_x1 94 (0x5e) dup2_x2 95 (0x5f) swap </syntaxhighlight> = Math = ; %add: Add two values, ..., value1, value2 → ..., result ; %sub: Subtract ; %mul: Multiply ; %div: Divide ; %rem: Remainder (取余） ; %neg: Negate ; %shl: Shift left ; %shr: Arithmetic shift right ; %ushr: Logical shift right ; %and: and ; %or: or ; %xor: xor ; %inc: Increment local variable by constant <syntaxhighlight lang="lisp"> 96 (0x60) iadd 97 (0x61) ladd 98 (0x62) fadd 99 (0x63) dadd 100 (0x64) isub 101 (0x65) lsub 102 (0x66) fsub 103 (0x67) dsub 104 (0x68) imul 105 (0x69) lmul 106 (0x6a) fmul 107 (0x6b) dmul 108 (0x6c) idiv 109 (0x6d) ldiv 110 (0x6e) fdiv 111 (0x6f) ddiv 112 (0x70) irem 113 (0x71) lrem 114 (0x72) frem 115 (0x73) drem 116 (0x74) ineg 117 (0x75) lneg 118 (0x76) fneg 119 (0x77) dneg 120 (0x78) ishl 121 (0x79) lshl 122 (0x7a) ishr 123 (0x7b) lshr 124 (0x7c) iushr 125 (0x7d) lushr 126 (0x7e) iand 127 (0x7f) land 128 (0x80) ior 129 (0x81) lor 130 (0x82) ixor 131 (0x83) lxor 132 (0x84) iinc (index const) </syntaxhighlight> = Conversions = Conversions between values. .., value → ..., result <syntaxhighlight lang="lisp"> 133 (0x85) i2l 134 (0x86) i2f 135 (0x87) i2d 136 (0x88) l2i 137 (0x89) l2f 138 (0x8a) l2d 139 (0x8b) f2i 140 (0x8c) f2l 141 (0x8d) f2d 142 (0x8e) d2i 143 (0x8f) d2l 144 (0x90) d2f 145 (0x91) i2b 146 (0x92) i2c 147 (0x93) i2s </syntaxhighlight> = Comparisons = <pre> 148 (0x94) lcmp 149 (0x95) fcmpl 150 (0x96) fcmpg 151 (0x97) dcmpl 152 (0x98) dcmpg 153 (0x99) ifeq 154 (0x9a) ifne 155 (0x9b) iflt 156 (0x9c) ifge 157 (0x9d) ifgt 158 (0x9e) ifle 159 (0x9f) if_icmpeq 160 (0xa0) if_icmpne 161 (0xa1) if_icmplt 162 (0xa2) if_icmpge 163 (0xa3) if_icmpgt 164 (0xa4) if_icmple 165 (0xa5) if_acmpeq 166 (0xa6) if_acmpne </pre> = References = <pre> 178 (0xb2) getstatic 179 (0xb3) putstatic 180 (0xb4) getfield 181 (0xb5) putfield 182 (0xb6) invokevirtual 183 (0xb7) invokespecial 184 (0xb8) invokestatic 185 (0xb9) invokeinterface 186 (0xba) invokedynamic 187 (0xbb) new 188 (0xbc) newarray 189 (0xbd) anewarray 190 (0xbe) arraylength 191 (0xbf) athrow 192 (0xc0) checkcast 193 (0xc1) instanceof 194 (0xc2) monitorenter 195 (0xc3) monitorexit </pre> = Control = <pre> 167 (0xa7) goto 168 (0xa8) jsr 169 (0xa9) ret 170 (0xaa) tableswitch 171 (0xab) lookupswitch 172 (0xac) ireturn 173 (0xad) lreturn 174 (0xae) freturn 175 (0xaf) dreturn 176 (0xb0) areturn 177 (0xb1) return </pre> = Extended = <pre> 196 (0xc4) wide 197 (0xc5) multianewarray 198 (0xc6) ifnull 199 (0xc7) ifnonnull 200 (0xc8) goto_w 201 (0xc9) jsr_w </pre> = Reserved = <pre> 202 (0xca) breakpoint 254 (0xfe) impdep1 255 (0xff) impdep2 </pre> * [https://docs.oracle.com/javase/specs/jvms/se8/html/jvms-7.html|Chapter 7. Opcode Mnemonics by Opcode] [[Category:JVM]]
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