Home / RISC-V / Table

RISC-V Opcode Map

Reverse lookup instructions by their hexadecimal encoding.

← Back to List
Opcode Mnemonic Syntax Format Name
0x0040200F CBO.ZERO CBO.ZERO (rs1) I-Type Cache Block Zero
0x0A001033 CLMUL CLMUL rd, rs1, rs2 R-Type Carry-less Multiply
0x60001013 CLZ CLZ rd, rs1 I-Type Count Leading Zeros
0x0000BA02 CM.POP CM.POP {reg_list}, stack_adj Push/Pop Pop Registers
0x0000B802 CM.PUSH CM.PUSH {reg_list}, -stack_adj Push/Pop Push Registers
0x60201013 CPOP CPOP rd, rs1 I-Type Population Count
0x00003073 CSRC CSRC csr, rs I-Type Control Status Register Clear
0x00002073 CSRR CSRR rd, csr I-Type Control Status Register Read
0x00003073 CSRRC CSRRC rd, csr, rs1 I-Type Control Status Register Read and Clear
0x00007073 CSRRCI CSRRCI rd, csr, uimm I-Type CSR Read and Clear Immediate
0x00002073 CSRRS CSRRS rd, csr, rs1 I-Type Control Status Register Read and Set
0x00006073 CSRRSI CSRRSI rd, csr, uimm I-Type CSR Read and Set Immediate
0x00001073 CSRRW CSRRW rd, csr, rs1 I-Type Control Status Register Read/Write
0x00005073 CSRRWI CSRRWI rd, csr, uimm I-Type CSR Read/Write Immediate
0x00002073 CSRS CSRS csr, rs I-Type Control Status Register Set
0x00001073 CSRW CSRW csr, rs I-Type Control Status Register Write
0x60101013 CTZ CTZ rd, rs1 I-Type Count Trailing Zeros
0x0E005033 CZERO.EQZ CZERO.EQZ rd, rs1, rs2 R-Type Conditional Zero Equal to Zero
0x0E007033 CZERO.NEZ CZERO.NEZ rd, rs1, rs2 R-Type Conditional Zero Not Equal to Zero
0x02004033 DIV DIV rd, rs1, rs2 R-Type Divide
0x02005033 DIVU DIVU rd, rs1, rs2 R-Type Divide Unsigned
0x0200503B DIVUW DIVUW rd, rs1, rs2 R-Type Divide Unsigned Word
0x0200403B DIVW DIVW rd, rs1, rs2 R-Type Divide Word
0x7B200073 DRET DRET R-Type (System) Debug Return
0x00100073 EBREAK EBREAK I-Type Environment Break
0x00000073 ECALL ECALL I-Type Environment Call
0x02000053 FADD.D FADD.D rd, rs1, rs2 R-Type Float Add Double
0x04000053 FADD.H FADD.H rd, rs1, rs2 R-Type Float Add Half
0x00000053 FADD.S FADD.S rd, rs1, rs2 R-Type Float Add (Single)
0xE2001053 FCLASS.D FCLASS.D rd, rs1 R-Type Float Classify (Double)
0xE4001053 FCLASS.H FCLASS.H rd, rs1 R-Type Float Classify (Half)
0xE0001053 FCLASS.S FCLASS.S rd, rs1 R-Type Float Classify (Single)
0xD2200053 FCVT.D.L FCVT.D.L rd, rs1 I-Type (Float) Convert Long to Double
0xD2300053 FCVT.D.LU FCVT.D.LU rd, rs1 I-Type (Float) Convert Unsigned Long to Double
0x42000053 FCVT.D.S FCVT.D.S rd, rs1 I-Type (Float) Float Convert Single to Double
0xD2000053 FCVT.D.W FCVT.D.W rd, rs1 I-Type (Float) Convert Word to Double
0xD2100053 FCVT.D.WU FCVT.D.WU rd, rs1 I-Type (Float) Convert Unsigned Word to Double
0x44000053 FCVT.H.S FCVT.H.S rd, rs1 I-Type (Float) Convert Single to Half
0xD4000053 FCVT.H.W FCVT.H.W rd, rs1 I-Type (Float) Convert Word to Half
0xD4100053 FCVT.H.WU FCVT.H.WU rd, rs1 I-Type (Float) Convert Unsigned Word to Half
0xC2200053 FCVT.L.D FCVT.L.D rd, rs1 I-Type (Float) Convert Double to Long
0xC0200053 FCVT.L.S FCVT.L.S rd, rs1 I-Type (Float) Convert Float to Long
0xC2300053 FCVT.LU.D FCVT.LU.D rd, rs1 I-Type (Float) Convert Double to Unsigned Long
0xC0300053 FCVT.LU.S FCVT.LU.S rd, rs1 I-Type (Float) Convert Float to Unsigned Long
0x40100053 FCVT.S.D FCVT.S.D rd, rs1 I-Type (Float) Float Convert Double to Single
0x40200053 FCVT.S.H FCVT.S.H rd, rs1 I-Type (Float) Convert Half to Single
0xD0200053 FCVT.S.L FCVT.S.L rd, rs1 I-Type (Float) Convert Long to Float
0xD0300053 FCVT.S.LU FCVT.S.LU rd, rs1 I-Type (Float) Convert Unsigned Long to Float
0xD0000053 FCVT.S.W FCVT.S.W rd, rs1 I-Type (Float) Float Convert from Word (Single)
0xD0100053 FCVT.S.WU FCVT.S.WU rd, rs1 I-Type (Float) Convert Unsigned Word to Float
0xC2000053 FCVT.W.D FCVT.W.D rd, rs1 I-Type (Float) Convert Double to Word
0xC4000053 FCVT.W.H FCVT.W.H rd, rs1 I-Type (Float) Convert Half to Word
0xC0000053 FCVT.W.S FCVT.W.S rd, rs1 I-Type (Float) Float Convert to Word (Single)
0xC2100053 FCVT.WU.D FCVT.WU.D rd, rs1 I-Type (Float) Convert Double to Unsigned Word
0xC4100053 FCVT.WU.H FCVT.WU.H rd, rs1 I-Type (Float) Convert Half to Unsigned Word
0xC0100053 FCVT.WU.S FCVT.WU.S rd, rs1 I-Type (Float) Convert Float to Unsigned Word
0x1A000053 FDIV.D FDIV.D rd, rs1, rs2 R-Type Float Divide Double
0x1C000053 FDIV.H FDIV.H rd, rs1, rs2 R-Type Float Divide (Half)
0x18000053 FDIV.S FDIV.S rd, rs1, rs2 R-Type Float Divide (Single)
0x0000000F FENCE FENCE pred, succ I-Type Fence
0x0000100F FENCE.I FENCE.I I-Type Instruction Fence
0xA2002053 FEQ.D FEQ.D rd, rs1, rs2 R-Type Float Equal (Double)
0xA4002053 FEQ.H FEQ.H rd, rs1, rs2 R-Type Float Equal (Half)
0xA0002053 FEQ.S FEQ.S rd, rs1, rs2 R-Type Float Equal (Single)
0x00003007 FLD FLD rd, offset(rs1) I-Type Float Load Double
0xA2000053 FLE.D FLE.D rd, rs1, rs2 R-Type Float Less or Equal (Double)
0xA4000053 FLE.H FLE.H rd, rs1, rs2 R-Type Float Less or Equal (Half)
0xA0000053 FLE.S FLE.S rd, rs1, rs2 R-Type Float Less or Equal (Single)
0x00001007 FLH FLH rd, offset(rs1) I-Type Float Load Halfword
0xF2100053 FLI.D FLI.D rd, rs1 R-Type Float Load Immediate (Double)
0xF4100053 FLI.H FLI.H rd, rs1 R-Type Float Load Immediate (Half)
0xF0100053 FLI.S FLI.S rd, rs1 R-Type Float Load Immediate (Single)
0xA2001053 FLT.D FLT.D rd, rs1, rs2 R-Type Float Less Than (Double)
0xA4001053 FLT.H FLT.H rd, rs1, rs2 R-Type Float Less Than (Half)
0xA0001053 FLT.S FLT.S rd, rs1, rs2 R-Type Float Less Than (Single)
0x00002007 FLW FLW rd, offset(rs1) I-Type Float Load Word
0x02000043 FMADD.D FMADD.D rd, rs1, rs2, rs3 R4-Type Float Fused Multiply-Add (Double)
0x04000043 FMADD.H FMADD.H rd, rs1, rs2, rs3 R4-Type Float Fused Multiply-Add (Half)
0x00000043 FMADD.S FMADD.S rd, rs1, rs2, rs3 R4-Type Float Fused Multiply-Add (Single)
0x2A001053 FMAX.D FMAX.D rd, rs1, rs2 R-Type Float Maximum (Double)
0x2C001053 FMAX.H FMAX.H rd, rs1, rs2 R-Type Float Maximum (Half)
0x28001053 FMAX.S FMAX.S rd, rs1, rs2 R-Type Float Maximum (Single)
0x28003053 FMAXM.S FMAXM.S rd, rs1, rs2 R-Type Float Maximum (IEEE 754-2019)
0x2A000053 FMIN.D FMIN.D rd, rs1, rs2 R-Type Float Minimum (Double)
0x2C000053 FMIN.H FMIN.H rd, rs1, rs2 R-Type Float Minimum (Half)
0x28000053 FMIN.S FMIN.S rd, rs1, rs2 R-Type Float Minimum (Single)
0x28002053 FMINM.S FMINM.S rd, rs1, rs2 R-Type Float Minimum (IEEE 754-2019)
0x02000047 FMSUB.D FMSUB.D rd, rs1, rs2, rs3 R4-Type Float Fused Multiply-Subtract (Double)
0x04000047 FMSUB.H FMSUB.H rd, rs1, rs2, rs3 R4-Type Float Fused Multiply-Subtract (Half)
0x00000047 FMSUB.S FMSUB.S rd, rs1, rs2, rs3 R4-Type Float Fused Multiply-Subtract (Single)
0x12000053 FMUL.D FMUL.D rd, rs1, rs2 R-Type Float Multiply Double
0x14000053 FMUL.H FMUL.H rd, rs1, rs2 R-Type Float Multiply (Half)
0x10000053 FMUL.S FMUL.S rd, rs1, rs2 R-Type Float Multiply (Single)
0xF2000053 FMV.D.X FMV.D.X rd, rs1 I-Type (Float) Move Integer to Double
0xF0000053 FMV.W.X FMV.W.X rd, rs1 I-Type (Float) Move Integer to Float
0xE2000053 FMV.X.D FMV.X.D rd, rs1 I-Type (Float) Move Double to Integer
0xE0000053 FMV.X.W FMV.X.W rd, rs1 I-Type (Float) Move Float to Integer
0x0200004F FNMADD.D FNMADD.D rd, rs1, rs2, rs3 R4-Type Float Negated Fused Multiply-Add (Double)
0x0400004F FNMADD.H FNMADD.H rd, rs1, rs2, rs3 R4-Type Float Negated Fused Multiply-Add (Half)
0x0000004F FNMADD.S FNMADD.S rd, rs1, rs2, rs3 R4-Type Float Negated Fused Multiply-Add (Single)