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RISC-V Opcode Map

Reverse lookup instructions by their hexadecimal encoding.

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Opcode Mnemonic Syntax Format Name
0x10001013 SHA256SUM0 SHA256SUM0 rd, rs1 I-Type SHA-256 Sum0
0x10601013 SHA512SIG0 SHA512SIG0 rd, rs1 R-Type SHA-512 Sigma0
0x10701013 SHA512SIG1 SHA512SIG1 rd, rs1 R-Type SHA-512 Sigma1
0x10401013 SHA512SUM0 SHA512SUM0 rd, rs1 R-Type SHA-512 Sum0
0x10501013 SHA512SUM1 SHA512SUM1 rd, rs1 R-Type SHA-512 Sum1
0x00001033 SLL SLL rd, rs1, rs2 R-Type Shift Left Logical
0x00001013 SLLI SLLI rd, rs1, shamt I-Type (Shift) Shift Left Logical Immediate
0x0000101B SLLIW SLLIW rd, rs1, shamt I-Type (Shift) Shift Left Logical Immediate Word
0x0000103B SLLW SLLW rd, rs1, rs2 R-Type Shift Left Logical Word
0x00002033 SLT SLT rd, rs1, rs2 R-Type Set Less Than
0x00002013 SLTI SLTI rd, rs1, imm I-Type Set Less Than Immediate
0x00003013 SLTIU SLTIU rd, rs1, imm I-Type Set Less Than Immediate Unsigned
0x00003033 SLTU SLTU rd, rs1, rs2 R-Type Set Less Than Unsigned
0x10801013 SM3P0 SM3P0 rd, rs1 R-Type SM3 P0 Transformation
0x10901013 SM3P1 SM3P1 rd, rs1 R-Type SM3 P1 Transformation
0x30000033 SM4ED SM4ED rd, rs1, rs2, bs R-Type SM4 Encryption/Decryption
0x34000033 SM4KS SM4KS rd, rs1, rs2, bs R-Type SM4 Key Schedule
0x00003033 SNEZ SNEZ rd, rs R-Type Set if Not Equal to Zero
0x40005033 SRA SRA rd, rs1, rs2 R-Type Shift Right Arithmetic
0x4000501B SRAIW SRAIW rd, rs1, shamt I-Type (Shift) Shift Right Arithmetic Immediate Word
0x4000503B SRAW SRAW rd, rs1, rs2 R-Type Shift Right Arithmetic Word
0x10200073 SRET SRET R-Type (System) Supervisor Return
0x00005033 SRL SRL rd, rs1, rs2 R-Type Shift Right Logical
0x0000501B SRLIW SRLIW rd, rs1, shamt I-Type (Shift) Shift Right Logical Immediate Word
0x0000503B SRLW SRLW rd, rs1, rs2 R-Type Shift Right Logical Word
0x40000033 SUB SUB rd, rs1, rs2 R-Type Subtract
0x4000003B SUBW SUBW rd, rs1, rs2 R-Type Subtract Word
0x00002023 SW SW rs2, offset(rs1) S-Type Store Word
0x00200073 URET URET R-Type (System) User Return
0x24002057 VAADD.VV VAADD.VV vd, vs2, vs1, vm OPIVV Vector Averaging Add
0x20002057 VAADDU.VV VAADDU.VV vd, vs2, vs1, vm OPIVV Vector Averaging Add Unsigned
0x40000057 VADC.VVM VADC.VVM vd, vs2, vs1, v0 OPIVV Vector Add with Carry
0x00003057 VADD.VI VADD.VI vd, vs2, imm, vm OPIVI Vector Add Immediate
0x00000057 VADD.VV VADD.VV vd, vs2, vs1, vm OPIVV Vector Integer Add
0xA200A077 VAESDF.VV VAESDF.VV vd, vs2, vs1 OPIVV Vector AES Decryption Final Round
0xA2002077 VAESDM.VV VAESDM.VV vd, vs2, vs1 OPIVV Vector AES Decryption Middle Round
0xA201A077 VAESEF.VV VAESEF.VV vd, vs2, vs1 OPIVV Vector AES Encryption Final Round
0xA2012077 VAESEM.VV VAESEM.VV vd, vs2, vs1 OPIVV Vector AES Encryption Middle Round
0x8A002077 VAESKF1.VI VAESKF1.VI vd, vs2, uimm OPIVI Vector AES Key Expansion 1
0xAA002077 VAESKF2.VI VAESKF2.VI vd, vs2, uimm OPIVI Vector AES Key Expansion 2
0x0000702F VAMOADDD.V VAMOADDD.V vd, (rs1), vs2, vm VAMO Vector Atomic Add Doubleword
0x0000602F VAMOADDW.V VAMOADDW.V vd, (rs1), vs2, vm VAMO Vector Atomic Add Word
0x6000702F VAMOANDD.V VAMOANDD.V vd, (rs1), vs2, vm VAMO Vector Atomic AND Doubleword
0x6000602F VAMOANDW.V VAMOANDW.V vd, (rs1), vs2, vm VAMO Vector Atomic AND Word
0xA000702F VAMOMAXD.V VAMOMAXD.V vd, (rs1), vs2, vm VAMO Vector Atomic Max Doubleword
0xE000602F VAMOMAXU.V VAMOMAXU.V vd, (rs1), vs2, vm VAMO Vector Atomic Max Unsigned
0xA000602F VAMOMAXW.V VAMOMAXW.V vd, (rs1), vs2, vm VAMO Vector Atomic Max Word
0x8000702F VAMOMIND.V VAMOMIND.V vd, (rs1), vs2, vm VAMO Vector Atomic Min Doubleword
0xC000602F VAMOMINU.V VAMOMINU.V vd, (rs1), vs2, vm VAMO Vector Atomic Min Unsigned
0x8000602F VAMOMINW.V VAMOMINW.V vd, (rs1), vs2, vm VAMO Vector Atomic Min Word
0x4000702F VAMOORD.V VAMOORD.V vd, (rs1), vs2, vm VAMO Vector Atomic OR Doubleword
0x4000602F VAMOORW.V VAMOORW.V vd, (rs1), vs2, vm VAMO Vector Atomic OR Word
0x2000702F VAMOXORD.V VAMOXORD.V vd, (rs1), vs2, vm VAMO Vector Atomic XOR Doubleword
0x2000602F VAMOXORW.V VAMOXORW.V vd, (rs1), vs2, vm VAMO Vector Atomic XOR Word
0x24003057 VAND.VI VAND.VI vd, vs2, imm, vm OPIVI Vector AND Immediate
0x04000057 VANDN.VV VANDN.VV vd, vs2, vs1, vm OPIVV Vector Bitwise AND-NOT
0x04004057 VANDN.VX VANDN.VX vd, vs2, rs1, vm OPIVX Vector Bitwise AND-NOT Scalar
0x2C002057 VASUB.VV VASUB.VV vd, vs2, vs1, vm OPIVV Vector Averaging Subtract Signed
0x28002057 VASUBU.VV VASUBU.VV vd, vs2, vs1, vm OPIVV Vector Averaging Subtract Unsigned
0x48042057 VBREV8.V VBREV8.V vd, vs2, vm OPIVV Vector Byte Reverse
0x30002057 VCLMUL.VV VCLMUL.VV vd, vs2, vs1, vm OPIVV Vector Carry-less Multiply
0x34002057 VCLMULH.VV VCLMULH.VV vd, vs2, vs1, vm OPIVV Vector Carry-less Multiply High
0x48062057 VCLZ.V VCLZ.V vd, vs2, vm OPIVV Vector Count Leading Zeros
0x5E002057 VCOMPRESS.VM VCOMPRESS.VM vd, vs2, vs1 OPMVV Vector Compress
0x40082057 VCPOP.M VCPOP.M rd, vs2, vm OPMVX Vector Mask Population Count
0x48072057 VCPOP.V VCPOP.V vd, vs2, vm OPIVV Vector Population Count
0x4806A057 VCTZ.V VCTZ.V vd, vs2, vm OPIVV Vector Count Trailing Zeros
0x84002057 VDIV.VV VDIV.VV vd, vs2, vs1, vm OPIVV Vector Integer Divide Signed
0x80002057 VDIVU.VV VDIVU.VV vd, vs2, vs1, vm OPIVV Vector Integer Divide Unsigned
0x00001057 VFADD.VV VFADD.VV vd, vs2, vs1, vm OPFVV Vector Float Add
0x4C081057 VFCLASS.V VFCLASS.V vd, vs2, vm OPFVV Vector Float Classify
0x48019057 VFCVT.F.X.V VFCVT.F.X.V vd, vs2, vm OPFVV Vector Signed Integer to Float Convert
0x48009057 VFCVT.X.F.V VFCVT.X.F.V vd, vs2, vm OPFVV Vector Float to Signed Integer Convert
0x80001057 VFDIV.VV VFDIV.VV vd, vs2, vs1, vm OPFVV Vector Float Divide
0x4008A057 VFIRST.M VFIRST.M rd, vs2, vm OPMVX Vector Find First Set Mask Bit
0xA0001057 VFMADD.VV VFMADD.VV vd, vs1, vs2, vm OPFVV Vector Float Fused Multiply-Add
0x18001057 VFMAX.VV VFMAX.VV vd, vs2, vs1, vm OPFVV Vector Float Maximum
0x10001057 VFMIN.VV VFMIN.VV vd, vs2, vs1, vm OPFVV Vector Float Minimum
0x90001057 VFMUL.VV VFMUL.VV vd, vs2, vs1, vm OPFVV Vector Float Multiply
0x42001057 VFMV.F.S VFMV.F.S fd, vs2 OPFVW Vector Move Float to Scalar
0x42005057 VFMV.S.F VFMV.S.F vd, fs1 OPFVW Vector Move Scalar to Float
0x480A1057 VFNCVT.F.F.W VFNCVT.F.F.W vd, vs2, vm OPFVV Vector Narrowing Float Convert
0x48089057 VFNCVT.X.F.W VFNCVT.X.F.W vd, vs2, vm OPFVV Vector Narrowing Float to Signed Int
0x4C029057 VFREC7.V VFREC7.V vd, vs2, vm OPFVV Vector Float Reciprocal Estimate 7-bit
0x1C001057 VFREDMAX.VS VFREDMAX.VS vd, vs2, vs1, vm OPFVV Vector Float Reduction Maximum
0x0C001057 VFREDOSUM.VS VFREDOSUM.VS vd, vs2, vs1, vm OPFVV Vector Ordered Float Reduction Sum
0x04001057 VFREDUSUM.VS VFREDUSUM.VS vd, vs2, vs1, vm OPFVV Vector Unordered Float Reduction Sum
0x4C021057 VFRSQRT7.V VFRSQRT7.V vd, vs2, vm OPFVV Vector Float Reciprocal Sqrt Estimate 7-bit
0x20001057 VFSGNJ.VV VFSGNJ.VV vd, vs2, vs1, vm OPFVV Vector Float Sign Injection
0x4C001057 VFSQRT.V VFSQRT.V vd, vs2, vm OPFVV Vector Float Square Root
0xC0001057 VFWADD.VV VFWADD.VV vd, vs2, vs1, vm OPFVV Vector Widening Float Add
0x48061057 VFWCVT.F.F.V VFWCVT.F.F.V vd, vs2, vm OPFVV Vector Widening Float to Float Convert
0x48059057 VFWCVT.F.X.V VFWCVT.F.X.V vd, vs2, vm OPFVV Vector Widening Integer to Float Convert
0x48049057 VFWCVT.X.F.V VFWCVT.X.F.V vd, vs2, vm OPFVV Vector Widening Float to Signed Int
0xE0001057 VFWMUL.VV VFWMUL.VV vd, vs2, vs1, vm OPFVV Vector Widening Float Multiply
0xCC001057 VFWREDOSUM.VS VFWREDOSUM.VS vd, vs2, vs1, vm OPFVV Vector Widening Ordered Float Reduction Sum
0xC4001057 VFWREDUSUM.VS VFWREDUSUM.VS vd, vs2, vs1, vm OPFVV Vector Widening Unordered Float Reduction Sum
0xB2002077 VGHSH.VV VGHSH.VV vd, vs2, vs1 OPIVV Vector GCM Hash
0x5008A057 VID.V VID.V vd, vm OPMVV Vector Element Index
0x50082057 VIOTA.M VIOTA.M vd, vs2, vm OPMVV Vector Iota