The Java^TM Virtual Machine Specification

CHAPTER 9

Opcode Mnemonics by Opcode

This chapter gives the mapping from Java virtual machine instruction opcodes, including the reserved opcodes (§6.2), to the mnemonics for the instructions represented by those opcodes.

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

17 (0x11) sipush

18 (0x12) ldc

19 (0x13) ldc_w

20 (0x14) ldc2_w

21 (0x15) iload

22 (0x16) lload

23 (0x17) fload

24 (0x18) dload

25 (0x19) aload

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

54 (0x36) istore

55 (0x37) lstore

56 (0x38) fstore

57 (0x39) dstore

58 (0x3a) astore

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

87 (0x57) pop

88 (0x58) pop2

089 (0x59) dup

090 (0x5a) dup_x1

091 (0x5b) dup_x2

092 (0x5c) dup2

093 (0x5d) dup2_x1

094 (0x5e) dup2_x2

095 (0x5f) swap

096 (0x60) iadd

097 (0x61) ladd

098 (0x62) fadd

099 (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

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

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

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

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) xxxunusedxxx¹

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

196 (0xc4) wide

197 (0xc5) multianewarray

198 (0xc6) ifnull

199 (0xc7) ifnonnull

200 (0xc8) goto_w

201 (0xc9) jsr_w

Reserved opcodes:

202 (0xca) breakpoint

254 (0xfe) impdep1

255 (0xff) impdep2

¹ For historical reasons, opcode value 186 is not used.

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