--- /dev/null
+
+# RV32I "RV32I Base Integer Instruction Set"
+
+| (23..18) | (17..12) | (11..6) | (5...0) |
+| -------- | -------- | ------- | ------- |
+|lui | rd imm20 6..2=0x0D 1..0=3 u rv32i rv64i rv128i
+|auipc | rd oimm20 6..2=0x05 1..0=3 u+o rv32i rv64i rv128i
+|jal | rd jimm20 6..2=0x1b 1..0=3 uj rv32i rv64i rv128i
+|jalr | rd rs1 oimm12 14..12=0 6..2=0x19 1..0=3 i+o rv32i rv64i rv128i
+|beq | rs1 rs2 sbimm12 14..12=0 6..2=0x18 1..0=3 sb rv32i rv64i rv128i
+|bne | rs1 rs2 sbimm12 14..12=1 6..2=0x18 1..0=3 sb rv32i rv64i rv128i
+|blt | rs1 rs2 sbimm12 14..12=4 6..2=0x18 1..0=3 sb rv32i rv64i rv128i
+|bge | rs1 rs2 sbimm12 14..12=5 6..2=0x18 1..0=3 sb rv32i rv64i rv128i
+|bltu | rs1 rs2 sbimm12 14..12=6 6..2=0x18 1..0=3 sb rv32i rv64i rv128i
+|bgeu | rs1 rs2 sbimm12 14..12=7 6..2=0x18 1..0=3 sb rv32i rv64i rv128i
+|lb | rd rs1 oimm12 14..12=0 6..2=0x00 1..0=3 i+l rv32i rv64i rv128i
+|lh | rd rs1 oimm12 14..12=1 6..2=0x00 1..0=3 i+l rv32i rv64i rv128i
+|lw | rd rs1 oimm12 14..12=2 6..2=0x00 1..0=3 i+l rv32i rv64i rv128i
+|lbu | rd rs1 oimm12 14..12=4 6..2=0x00 1..0=3 i+l rv32i rv64i rv128i
+|lhu | rd rs1 oimm12 14..12=5 6..2=0x00 1..0=3 i+l rv32i rv64i rv128i
+|sb | rs1 rs2 simm12 14..12=0 6..2=0x08 1..0=3 s rv32i rv64i rv128i
+|sh | rs1 rs2 simm12 14..12=1 6..2=0x08 1..0=3 s rv32i rv64i rv128i
+|sw | rs1 rs2 simm12 14..12=2 6..2=0x08 1..0=3 s rv32i rv64i rv128i
+|addi | rd rs1 imm12 14..12=0 6..2=0x04 1..0=3 i rv32i rv64i rv128i
+|slti | rd rs1 imm12 14..12=2 6..2=0x04 1..0=3 i rv32i rv64i rv128i
+|sltiu | rd rs1 imm12 14..12=3 6..2=0x04 1..0=3 i rv32i rv64i rv128i
+|xori | rd rs1 imm12 14..12=4 6..2=0x04 1..0=3 i rv32i rv64i rv128i
+|ori | rd rs1 imm12 14..12=6 6..2=0x04 1..0=3 i rv32i rv64i rv128i
+|andi | rd rs1 imm12 14..12=7 6..2=0x04 1..0=3 i rv32i rv64i rv128i
+|slli | rd rs1 shamt5 31..27=0 14..12=1 6..2=0x04 1..0=3 i·sh5 rv32i
+|srli | rd rs1 shamt5 31..27=0 14..12=5 6..2=0x04 1..0=3 i·sh5 rv32i
+|srai | rd rs1 shamt5 31..27=8 14..12=5 6..2=0x04 1..0=3 i·sh5 rv32i
+|add | rd rs1 rs2 31..25=0 14..12=0 6..2=0x0C 1..0=3 r rv32i rv64i rv128i
+|sub | rd rs1 rs2 31..25=32 14..12=0 6..2=0x0C 1..0=3 r rv32i rv64i rv128i
+|sll | rd rs1 rs2 31..25=0 14..12=1 6..2=0x0C 1..0=3 r rv32i rv64i rv128i
+|slt | rd rs1 rs2 31..25=0 14..12=2 6..2=0x0C 1..0=3 r rv32i rv64i rv128i
+|sltu | rd rs1 rs2 31..25=0 14..12=3 6..2=0x0C 1..0=3 r rv32i rv64i rv128i
+|xor | rd rs1 rs2 31..25=0 14..12=4 6..2=0x0C 1..0=3 r rv32i rv64i rv128i
+|srl | rd rs1 rs2 31..25=0 14..12=5 6..2=0x0C 1..0=3 r rv32i rv64i rv128i
+|sra | rd rs1 rs2 31..25=32 14..12=5 6..2=0x0C 1..0=3 r rv32i rv64i rv128i
+|or | rd rs1 rs2 31..25=0 14..12=6 6..2=0x0C 1..0=3 r rv32i rv64i rv128i
+|and | rd rs1 rs2 31..25=0 14..12=7 6..2=0x0C 1..0=3 r rv32i rv64i rv128i
+|fence | 31..28=ignore pred succ 19..15=ignore 14..12=0 11..7=ignore 6..2=0x03 1..0=3 r·f rv32i rv64i rv128i
+|fence.i | 31..28=ignore 27..20=ignore 19..15=ignore 14..12=1 11..7=ignore 6..2=0x03 1..0=3 none rv32i rv64i rv128i
+
+# RV64I "RV64I Base Integer Instruction Set (in addition to RV32I)"
+
+| (23..18) | (17..12) | (11..6) | (5...0) |
+| -------- | -------- | ------- | ------- |
+|lwu | rd rs1 oimm12 14..12=6 6..2=0x00 1..0=3 i+l rv64i rv128i
+|ld | rd rs1 oimm12 14..12=3 6..2=0x00 1..0=3 i+l rv64i rv128i
+|sd | rs1 rs2 simm12 14..12=3 6..2=0x08 1..0=3 s rv64i rv128i
+|slli | rd rs1 shamt6 31..27=0 14..12=1 6..2=0x04 1..0=3 i·sh6 rv64i
+|srli | rd rs1 shamt6 31..27=0 14..12=5 6..2=0x04 1..0=3 i·sh6 rv64i
+|srai | rd rs1 shamt6 31..27=8 14..12=5 6..2=0x04 1..0=3 i·sh6 rv64i
+|addiw | rd rs1 imm12 14..12=0 6..2=0x06 1..0=3 i rv64i rv128i
+|slliw | rd rs1 shamt5 31..25=0 14..12=1 6..2=0x06 1..0=3 i·sh5 rv64i rv128i
+|srliw | rd rs1 shamt5 31..25=0 14..12=5 6..2=0x06 1..0=3 i·sh5 rv64i rv128i
+|sraiw | rd rs1 shamt5 31..25=32 14..12=5 6..2=0x06 1..0=3 i·sh5 rv64i rv128i
+|addw | rd rs1 rs2 31..25=0 14..12=0 6..2=0x0E 1..0=3 r rv64i rv128i
+|subw | rd rs1 rs2 31..25=32 14..12=0 6..2=0x0E 1..0=3 r rv64i rv128i
+|sllw | rd rs1 rs2 31..25=0 14..12=1 6..2=0x0E 1..0=3 r rv64i rv128i
+|srlw | rd rs1 rs2 31..25=0 14..12=5 6..2=0x0E 1..0=3 r rv64i rv128i
+|sraw | rd rs1 rs2 31..25=32 14..12=5 6..2=0x0E 1..0=3 r rv64i rv128i
+
+# RV128I "RV128I Base Integer Instruction Set (in addition to RV64I)"
+
+| (23..18) | (17..12) | (11..6) | (5...0) |
+| -------- | -------- | ------- | ------- |
+|ldu | rd rs1 oimm12 14..12=7 6..2=0x00 1..0=3 i+l rv128i
+|lq | rd rs1 oimm12 14..12=2 6..2=0x03 1..0=3 i+l rv128i
+|sq | rs1 rs2 simm12 14..12=4 6..2=0x08 1..0=3 s rv128i
+|slli | rd rs1 shamt7 31..27=0 14..12=1 6..2=0x04 1..0=3 i·sh7 rv128i
+|srli | rd rs1 shamt7 31..27=0 14..12=5 6..2=0x04 1..0=3 i·sh7 rv128i
+|srai | rd rs1 shamt7 31..27=8 14..12=5 6..2=0x04 1..0=3 i·sh7 rv128i
+|addid | rd rs1 imm12 14..12=0 6..2=0x16 1..0=3 i rv128i
+|sllid | rd rs1 shamt6 31..26=0 14..12=1 6..2=0x16 1..0=3 i·sh6 rv128i
+|srlid | rd rs1 shamt6 31..26=0 14..12=5 6..2=0x16 1..0=3 i·sh6 rv128i
+|sraid | rd rs1 shamt6 31..26=16 14..12=5 6..2=0x16 1..0=3 i·sh6 rv128i
+|addd | rd rs1 rs2 31..25=0 14..12=0 6..2=0x1E 1..0=3 r rv128i
+|subd | rd rs1 rs2 31..25=32 14..12=0 6..2=0x1E 1..0=3 r rv128i
+|slld | rd rs1 rs2 31..25=0 14..12=1 6..2=0x1E 1..0=3 r rv128i
+|srld | rd rs1 rs2 31..25=0 14..12=5 6..2=0x1E 1..0=3 r rv128i
+|srad | rd rs1 rs2 31..25=32 14..12=5 6..2=0x1E 1..0=3 r rv128i
+
+# RV32M "RV32M Standard Extension for Integer Multiply and Divide"
+
+| (23..18) | (17..12) | (11..6) | (5...0) |
+| -------- | -------- | ------- | ------- |
+|mul | rd rs1 rs2 31..25=1 14..12=0 6..2=0x0C 1..0=3 r rv32m rv64m rv128m
+|mulh | rd rs1 rs2 31..25=1 14..12=1 6..2=0x0C 1..0=3 r rv32m rv64m rv128m
+|mulhsu | rd rs1 rs2 31..25=1 14..12=2 6..2=0x0C 1..0=3 r rv32m rv64m rv128m
+|mulhu | rd rs1 rs2 31..25=1 14..12=3 6..2=0x0C 1..0=3 r rv32m rv64m rv128m
+|div | rd rs1 rs2 31..25=1 14..12=4 6..2=0x0C 1..0=3 r rv32m rv64m rv128m
+|divu | rd rs1 rs2 31..25=1 14..12=5 6..2=0x0C 1..0=3 r rv32m rv64m rv128m
+|rem | rd rs1 rs2 31..25=1 14..12=6 6..2=0x0C 1..0=3 r rv32m rv64m rv128m
+|remu | rd rs1 rs2 31..25=1 14..12=7 6..2=0x0C 1..0=3 r rv32m rv64m rv128m
+
+# RV64M "RV64M Standard Extension for Integer Multiply and Divide (in addition to RV32M)"
+
+| (23..18) | (17..12) | (11..6) | (5...0) |
+| -------- | -------- | ------- | ------- |
+|mulw | rd rs1 rs2 31..25=1 14..12=0 6..2=0x0E 1..0=3 r rv64m rv128m
+|divw | rd rs1 rs2 31..25=1 14..12=4 6..2=0x0E 1..0=3 r rv64m rv128m
+|divuw | rd rs1 rs2 31..25=1 14..12=5 6..2=0x0E 1..0=3 r rv64m rv128m
+|remw | rd rs1 rs2 31..25=1 14..12=6 6..2=0x0E 1..0=3 r rv64m rv128m
+|remuw | rd rs1 rs2 31..25=1 14..12=7 6..2=0x0E 1..0=3 r rv64m rv128m
+
+# RV128M "RV128M Standard Extension for Integer Multiply and Divide (in addition to RV64M)"
+
+| (23..18) | (17..12) | (11..6) | (5...0) |
+| -------- | -------- | ------- | ------- |
+|muld | rd rs1 rs2 31..25=1 14..12=0 6..2=0x1E 1..0=3 r rv128m
+|divd | rd rs1 rs2 31..25=1 14..12=4 6..2=0x1E 1..0=3 r rv128m
+|divud | rd rs1 rs2 31..25=1 14..12=5 6..2=0x1E 1..0=3 r rv128m
+|remd | rd rs1 rs2 31..25=1 14..12=6 6..2=0x1E 1..0=3 r rv128m
+|remud | rd rs1 rs2 31..25=1 14..12=7 6..2=0x1E 1..0=3 r rv128m
+
+# RV32A "RV32A Standard Extension for Atomic Instructions"
+
+| (23..18) | (17..12) | (11..6) | (5...0) |
+| -------- | -------- | ------- | ------- |
+|lr.w | rd rs1 24..20=0 aq rl 31..29=0 28..27=2 14..12=2 6..2=0x0B 1..0=3 r·l rv32a rv64a rv128a
+|sc.w | rd rs1 rs2 aq rl 31..29=0 28..27=3 14..12=2 6..2=0x0B 1..0=3 r·a rv32a rv64a rv128a
+|amoswap.w| rd rs1 rs2 aq rl 31..29=0 28..27=1 14..12=2 6..2=0x0B 1..0=3 r·a rv32a rv64a rv128a
+|amoadd.w | rd rs1 rs2 aq rl 31..29=0 28..27=0 14..12=2 6..2=0x0B 1..0=3 r·a rv32a rv64a rv128a
+|amoxor.w | rd rs1 rs2 aq rl 31..29=1 28..27=0 14..12=2 6..2=0x0B 1..0=3 r·a rv32a rv64a rv128a
+|amoor.w | rd rs1 rs2 aq rl 31..29=2 28..27=0 14..12=2 6..2=0x0B 1..0=3 r·a rv32a rv64a rv128a
+|amoand.w | rd rs1 rs2 aq rl 31..29=3 28..27=0 14..12=2 6..2=0x0B 1..0=3 r·a rv32a rv64a rv128a
+|amomin.w | rd rs1 rs2 aq rl 31..29=4 28..27=0 14..12=2 6..2=0x0B 1..0=3 r·a rv32a rv64a rv128a
+|amomax.w | rd rs1 rs2 aq rl 31..29=5 28..27=0 14..12=2 6..2=0x0B 1..0=3 r·a rv32a rv64a rv128a
+|amominu.w| rd rs1 rs2 aq rl 31..29=6 28..27=0 14..12=2 6..2=0x0B 1..0=3 r·a rv32a rv64a rv128a
+|amomaxu.w| rd rs1 rs2 aq rl 31..29=7 28..27=0 14..12=2 6..2=0x0B 1..0=3 r·a rv32a rv64a rv128a
+
+# RV64A "RV64A Standard Extension for Atomic Instructions (in addition to RV32A)"
+
+| (23..18) | (17..12) | (11..6) | (5...0) |
+| -------- | -------- | ------- | ------- |
+|lr.d | rd rs1 24..20=0 aq rl 31..29=0 28..27=2 14..12=3 6..2=0x0B 1..0=3 r·l rv64a rv128a
+|sc.d | rd rs1 rs2 aq rl 31..29=0 28..27=3 14..12=3 6..2=0x0B 1..0=3 r·a rv64a rv128a
+|amoswap.d| rd rs1 rs2 aq rl 31..29=0 28..27=1 14..12=3 6..2=0x0B 1..0=3 r·a rv64a rv128a
+|amoadd.d | rd rs1 rs2 aq rl 31..29=0 28..27=0 14..12=3 6..2=0x0B 1..0=3 r·a rv64a rv128a
+|amoxor.d | rd rs1 rs2 aq rl 31..29=1 28..27=0 14..12=3 6..2=0x0B 1..0=3 r·a rv64a rv128a
+|amoor.d | rd rs1 rs2 aq rl 31..29=2 28..27=0 14..12=3 6..2=0x0B 1..0=3 r·a rv64a rv128a
+|amoand.d | rd rs1 rs2 aq rl 31..29=3 28..27=0 14..12=3 6..2=0x0B 1..0=3 r·a rv64a rv128a
+|amomin.d | rd rs1 rs2 aq rl 31..29=4 28..27=0 14..12=3 6..2=0x0B 1..0=3 r·a rv64a rv128a
+|amomax.d | rd rs1 rs2 aq rl 31..29=5 28..27=0 14..12=3 6..2=0x0B 1..0=3 r·a rv64a rv128a
+|amominu.d| rd rs1 rs2 aq rl 31..29=6 28..27=0 14..12=3 6..2=0x0B 1..0=3 r·a rv64a rv128a
+|amomaxu.d| rd rs1 rs2 aq rl 31..29=7 28..27=0 14..12=3 6..2=0x0B 1..0=3 r·a rv64a rv128a
+
+# RV128A "RV128A Standard Extension for Atomic Instructions (in addition to RV64A)"
+
+| (23..18) | (17..12) | (11..6) | (5...0) |
+| -------- | -------- | ------- | ------- |
+|lr.q | rd rs1 24..20=0 aq rl 31..29=0 28..27=2 14..12=4 6..2=0x0B 1..0=3 r·l rv128a
+|sc.q | rd rs1 rs2 aq rl 31..29=0 28..27=3 14..12=4 6..2=0x0B 1..0=3 r·a rv128a
+|amoswap.q| rd rs1 rs2 aq rl 31..29=0 28..27=1 14..12=4 6..2=0x0B 1..0=3 r·a rv128a
+|amoadd.q | rd rs1 rs2 aq rl 31..29=0 28..27=0 14..12=4 6..2=0x0B 1..0=3 r·a rv128a
+|amoxor.q | rd rs1 rs2 aq rl 31..29=1 28..27=0 14..12=4 6..2=0x0B 1..0=3 r·a rv128a
+|amoor.q | rd rs1 rs2 aq rl 31..29=2 28..27=0 14..12=4 6..2=0x0B 1..0=3 r·a rv128a
+|amoand.q | rd rs1 rs2 aq rl 31..29=3 28..27=0 14..12=4 6..2=0x0B 1..0=3 r·a rv128a
+|amomin.q | rd rs1 rs2 aq rl 31..29=4 28..27=0 14..12=4 6..2=0x0B 1..0=3 r·a rv128a
+|amomax.q | rd rs1 rs2 aq rl 31..29=5 28..27=0 14..12=4 6..2=0x0B 1..0=3 r·a rv128a
+|amominu.q| rd rs1 rs2 aq rl 31..29=6 28..27=0 14..12=4 6..2=0x0B 1..0=3 r·a rv128a
+|amomaxu.q| rd rs1 rs2 aq rl 31..29=7 28..27=0 14..12=4 6..2=0x0B 1..0=3 r·a rv128a
+
+# RV32S "RV32S Standard Extension for Supervisor-level Instructions"
+
+| (23..18) | (17..12) | (11..6) | (5...0) |
+| -------- | -------- | ------- | ------- |
+|ecall | 11..7=0 19..15=0 31..20=0x000 14..12=0 6..2=0x1C 1..0=3 none rv32s rv64s rv128s
+|ebreak | 11..7=0 19..15=0 31..20=0x001 14..12=0 6..2=0x1C 1..0=3 none rv32s rv64s rv128s
+|uret | 11..7=0 19..15=0 31..20=0x002 14..12=0 6..2=0x1C 1..0=3 none rv32s rv64s rv128s
+|sret | 11..7=0 19..15=0 31..20=0x102 14..12=0 6..2=0x1C 1..0=3 none rv32s rv64s rv128s
+|hret | 11..7=0 19..15=0 31..20=0x202 14..12=0 6..2=0x1C 1..0=3 none rv32s rv64s rv128s
+|mret | 11..7=0 19..15=0 31..20=0x302 14..12=0 6..2=0x1C 1..0=3 none rv32s rv64s rv128s
+|dret | 11..7=0 19..15=0 31..20=0x7b2 14..12=0 6..2=0x1C 1..0=3 none rv32s rv64s rv128s
+|sfence.vm 11..7=0 rs1 31..20=0x104 14..12=0 6..2=0x1C 1..0=3 r+sf rv32s rv64s rv128s
+|sfence.vma|11..7=0 rs1 rs2 31..25=0x009 14..12=0 6..2=0x1C 1..0=3 r+sfa rv32s rv64s rv128s
+|wfi | 11..7=0 19..15=0 31..20=0x105 14..12=0 6..2=0x1C 1..0=3 none rv32s rv64s rv128s
+|csrrw | rd rs1 csr12 14..12=1 6..2=0x1C 1..0=3 i·csr rv32s rv64s rv128s
+|csrrs | rd rs1 csr12 14..12=2 6..2=0x1C 1..0=3 i·csr rv32s rv64s rv128s
+|csrrc | rd rs1 csr12 14..12=3 6..2=0x1C 1..0=3 i·csr rv32s rv64s rv128s
+|csrrwi | rd zimm csr12 14..12=5 6..2=0x1C 1..0=3 i·csr+i rv32s rv64s rv128s
+|csrrsi | rd zimm csr12 14..12=6 6..2=0x1C 1..0=3 i·csr+i rv32s rv64s rv128s
+|csrrci | rd zimm csr12 14..12=7 6..2=0x1C 1..0=3 i·csr+i rv32s rv64s rv128s
+
+# RV32F "RV32F Standard Extension for Single-Precision Floating-Point"
+
+| (23..18) | (17..12) | (11..6) | (5...0) |
+| -------- | -------- | ------- | ------- |
+|flw | frd rs1 oimm12 14..12=2 6..2=0x01 1..0=3 i+lf rv32f rv64f rv128f
+|fsw | rs1 frs2 simm12 14..12=2 6..2=0x09 1..0=3 s+f rv32f rv64f rv128f
+|fmadd.s | frd frs1 frs2 frs3 rm 26..25=0 6..2=0x10 1..0=3 r4·m rv32f rv64f rv128f
+|fmsub.s | frd frs1 frs2 frs3 rm 26..25=0 6..2=0x11 1..0=3 r4·m rv32f rv64f rv128f
+|fnmsub.s | frd frs1 frs2 frs3 rm 26..25=0 6..2=0x12 1..0=3 r4·m rv32f rv64f rv128f
+|fnmadd.s | frd frs1 frs2 frs3 rm 26..25=0 6..2=0x13 1..0=3 r4·m rv32f rv64f rv128f
+|fadd.s | frd frs1 frs2 31..27=0x00 rm 26..25=0 6..2=0x14 1..0=3 r·m+3f rv32f rv64f rv128f
+|fsub.s | frd frs1 frs2 31..27=0x01 rm 26..25=0 6..2=0x14 1..0=3 r·m+3f rv32f rv64f rv128f
+|fmul.s | frd frs1 frs2 31..27=0x02 rm 26..25=0 6..2=0x14 1..0=3 r·m+3f rv32f rv64f rv128f
+|fdiv.s | frd frs1 frs2 31..27=0x03 rm 26..25=0 6..2=0x14 1..0=3 r·m+3f rv32f rv64f rv128f
+|fsgnj.s | frd frs1 frs2 31..27=0x04 14..12=0 26..25=0 6..2=0x14 1..0=3 r+3f rv32f rv64f rv128f
+|fsgnjn.s | frd frs1 frs2 31..27=0x04 14..12=1 26..25=0 6..2=0x14 1..0=3 r+3f rv32f rv64f rv128f
+|fsgnjx.s | frd frs1 frs2 31..27=0x04 14..12=2 26..25=0 6..2=0x14 1..0=3 r+3f rv32f rv64f rv128f
+|fmin.s | frd frs1 frs2 31..27=0x05 14..12=0 26..25=0 6..2=0x14 1..0=3 r+3f rv32f rv64f rv128f
+|fmax.s | frd frs1 frs2 31..27=0x05 14..12=1 26..25=0 6..2=0x14 1..0=3 r+3f rv32f rv64f rv128f
+|fsqrt.s | frd frs1 24..20=0 31..27=0x0B rm 26..25=0 6..2=0x14 1..0=3 r·m+ff rv32f rv64f rv128f
+|fle.s | rd frs1 frs2 31..27=0x14 14..12=0 26..25=0 6..2=0x14 1..0=3 r+rff rv32f rv64f rv128f
+|flt.s | rd frs1 frs2 31..27=0x14 14..12=1 26..25=0 6..2=0x14 1..0=3 r+rff rv32f rv64f rv128f
+|feq.s | rd frs1 frs2 31..27=0x14 14..12=2 26..25=0 6..2=0x14 1..0=3 r+rff rv32f rv64f rv128f
+|fcvt.w.s | rd frs1 24..20=0 31..27=0x18 rm 26..25=0 6..2=0x14 1..0=3 r·m+rf rv32f rv64f rv128f
+|fcvt.wu.s| rd frs1 24..20=1 31..27=0x18 rm 26..25=0 6..2=0x14 1..0=3 r·m+rf rv32f rv64f rv128f
+|fcvt.s.w | frd rs1 24..20=0 31..27=0x1A rm 26..25=0 6..2=0x14 1..0=3 r·m+fr rv32f rv64f rv128f
+|fcvt.s.wu| frd rs1 24..20=1 31..27=0x1A rm 26..25=0 6..2=0x14 1..0=3 r·m+fr rv32f rv64f rv128f
+|fmv.x.s | rd frs1 24..20=0 31..27=0x1C 14..12=0 26..25=0 6..2=0x14 1..0=3 r+rf rv32f rv64f rv128f
+|fclass.s | rd frs1 24..20=0 31..27=0x1C 14..12=1 26..25=0 6..2=0x14 1..0=3 r+rf rv32f rv64f rv128f
+|fmv.s.x | frd rs1 24..20=0 31..27=0x1E 14..12=0 26..25=0 6..2=0x14 1..0=3 r+fr rv32f rv64f rv128f
+
+# RV64F "RV64F Standard Extension for Single-Precision Floating-Point (in addition to RV32F)"
+
+| (23..18) | (17..12) | (11..6) | (5...0) |
+| -------- | -------- | ------- | ------- |
+|fcvt.l.s | rd frs1 24..20=2 31..27=0x18 rm 26..25=0 6..2=0x14 1..0=3 r·m+rf rv64f rv128f
+|fcvt.lu.s| rd frs1 24..20=3 31..27=0x18 rm 26..25=0 6..2=0x14 1..0=3 r·m+rf rv64f rv128f
+|fcvt.s.l | frd rs1 24..20=2 31..27=0x1A rm 26..25=0 6..2=0x14 1..0=3 r·m+fr rv64f rv128f
+|fcvt.s.lu| frd rs1 24..20=3 31..27=0x1A rm 26..25=0 6..2=0x14 1..0=3 r·m+fr rv64f rv128f
+
+# RV32D "RV32D Standard Extension for Double-Precision Floating-Point"
+
+| (23..18) | (17..12) | (11..6) | (5...0) |
+| -------- | -------- | ------- | ------- |
+|fld | frd rs1 oimm12 14..12=3 6..2=0x01 1..0=3 i+lf rv32d rv64d rv128d
+|fsd | rs1 frs2 simm12 14..12=3 6..2=0x09 1..0=3 s+f rv32d rv64d rv128d
+|fmadd.d | frd frs1 frs2 frs3 rm 26..25=1 6..2=0x10 1..0=3 r4·m rv32d rv64d rv128d
+|fmsub.d | frd frs1 frs2 frs3 rm 26..25=1 6..2=0x11 1..0=3 r4·m rv32d rv64d rv128d
+|fnmsub.d | frd frs1 frs2 frs3 rm 26..25=1 6..2=0x12 1..0=3 r4·m rv32d rv64d rv128d
+|fnmadd.d | frd frs1 frs2 frs3 rm 26..25=1 6..2=0x13 1..0=3 r4·m rv32d rv64d rv128d
+|fadd.d | frd frs1 frs2 31..27=0x00 rm 26..25=1 6..2=0x14 1..0=3 r·m+3f rv32d rv64d rv128d
+|fsub.d | frd frs1 frs2 31..27=0x01 rm 26..25=1 6..2=0x14 1..0=3 r·m+3f rv32d rv64d rv128d
+|fmul.d | frd frs1 frs2 31..27=0x02 rm 26..25=1 6..2=0x14 1..0=3 r·m+3f rv32d rv64d rv128d
+|fdiv.d | frd frs1 frs2 31..27=0x03 rm 26..25=1 6..2=0x14 1..0=3 r·m+3f rv32d rv64d rv128d
+|fsgnj.d | frd frs1 frs2 31..27=0x04 14..12=0 26..25=1 6..2=0x14 1..0=3 r+3f rv32d rv64d rv128d
+|fsgnjn.d | frd frs1 frs2 31..27=0x04 14..12=1 26..25=1 6..2=0x14 1..0=3 r+3f rv32d rv64d rv128d
+|fsgnjx.d | frd frs1 frs2 31..27=0x04 14..12=2 26..25=1 6..2=0x14 1..0=3 r+3f rv32d rv64d rv128d
+|fmin.d | frd frs1 frs2 31..27=0x05 14..12=0 26..25=1 6..2=0x14 1..0=3 r+3f rv32d rv64d rv128d
+|fmax.d | frd frs1 frs2 31..27=0x05 14..12=1 26..25=1 6..2=0x14 1..0=3 r+3f rv32d rv64d rv128d
+|fcvt.s.d | frd frs1 24..20=1 31..27=0x08 rm 26..25=0 6..2=0x14 1..0=3 r·m+ff rv32d rv64d rv128d
+|fcvt.d.s | frd frs1 24..20=0 31..27=0x08 rm 26..25=1 6..2=0x14 1..0=3 r·m+ff rv32d rv64d rv128d
+|fsqrt.d | frd frs1 24..20=0 31..27=0x0B rm 26..25=1 6..2=0x14 1..0=3 r·m+ff rv32d rv64d rv128d
+|fle.d | rd frs1 frs2 31..27=0x14 14..12=0 26..25=1 6..2=0x14 1..0=3 r+rff rv32d rv64d rv128d
+|flt.d | rd frs1 frs2 31..27=0x14 14..12=1 26..25=1 6..2=0x14 1..0=3 r+rff rv32d rv64d rv128d
+|feq.d | rd frs1 frs2 31..27=0x14 14..12=2 26..25=1 6..2=0x14 1..0=3 r+rff rv32d rv64d rv128d
+|fcvt.w.d | rd frs1 24..20=0 31..27=0x18 rm 26..25=1 6..2=0x14 1..0=3 r·m+rf rv32d rv64d rv128d
+|fcvt.wu.d| rd frs1 24..20=1 31..27=0x18 rm 26..25=1 6..2=0x14 1..0=3 r·m+rf rv32d rv64d rv128d
+|fcvt.d.w | frd rs1 24..20=0 31..27=0x1A rm 26..25=1 6..2=0x14 1..0=3 r·m+fr rv32d rv64d rv128d
+|fcvt.d.wu| frd rs1 24..20=1 31..27=0x1A rm 26..25=1 6..2=0x14 1..0=3 r·m+fr rv32d rv64d rv128d
+|fclass.d | rd frs1 24..20=0 31..27=0x1C 14..12=1 26..25=1 6..2=0x14 1..0=3 r+rf rv32d rv64d rv128d
+
+# RV64D "RV64D Standard Extension for Double-Precision Floating-Point (in addition to RV32D)"
+
+| (23..18) | (17..12) | (11..6) | (5...0) |
+| -------- | -------- | ------- | ------- |
+|fcvt.l.d | rd frs1 24..20=2 31..27=0x18 rm 26..25=1 6..2=0x14 1..0=3 r·m+rf rv64d rv128d
+|fcvt.lu.d| rd frs1 24..20=3 31..27=0x18 rm 26..25=1 6..2=0x14 1..0=3 r·m+rf rv64d rv128d
+|fmv.x.d | rd frs1 24..20=0 31..27=0x1C 14..12=0 26..25=1 6..2=0x14 1..0=3 r+rf rv64d rv128d
+|fcvt.d.l | frd rs1 24..20=2 31..27=0x1A rm 26..25=1 6..2=0x14 1..0=3 r·m+fr rv64d rv128d
+|fcvt.d.lu| frd rs1 24..20=3 31..27=0x1A rm 26..25=1 6..2=0x14 1..0=3 r·m+fr rv64d rv128d
+|fmv.d.x | frd rs1 24..20=0 31..27=0x1E 14..12=0 26..25=1 6..2=0x14 1..0=3 r+fr rv64d rv128d
+
+# RV32Q "RV32Q Standard Extension for Quad-Precision Floating-Point"
+
+| (23..18) | (17..12) | (11..6) | (5...0) |
+| -------- | -------- | ------- | ------- |
+|flq | frd rs1 oimm12 14..12=4 6..2=0x01 1..0=3 i+lf rv32q rv64q rv128q
+|fsq | rs1 frs2 simm12 14..12=4 6..2=0x09 1..0=3 s+f rv32q rv64q rv128q
+|fmadd.q | frd frs1 frs2 frs3 rm 26..25=3 6..2=0x10 1..0=3 r4·m rv32q rv64q rv128q
+|fmsub.q | frd frs1 frs2 frs3 rm 26..25=3 6..2=0x11 1..0=3 r4·m rv32q rv64q rv128q
+|fnmsub.q | frd frs1 frs2 frs3 rm 26..25=3 6..2=0x12 1..0=3 r4·m rv32q rv64q rv128q
+|fnmadd.q | frd frs1 frs2 frs3 rm 26..25=3 6..2=0x13 1..0=3 r4·m rv32q rv64q rv128q
+|fadd.q | frd frs1 frs2 31..27=0x00 rm 26..25=3 6..2=0x14 1..0=3 r·m+3f rv32q rv64q rv128q
+|fsub.q | frd frs1 frs2 31..27=0x01 rm 26..25=3 6..2=0x14 1..0=3 r·m+3f rv32q rv64q rv128q
+|fmul.q | frd frs1 frs2 31..27=0x02 rm 26..25=3 6..2=0x14 1..0=3 r·m+3f rv32q rv64q rv128q
+|fdiv.q | frd frs1 frs2 31..27=0x03 rm 26..25=3 6..2=0x14 1..0=3 r·m+3f rv32q rv64q rv128q
+|fsgnj.q | frd frs1 frs2 31..27=0x04 14..12=0 26..25=3 6..2=0x14 1..0=3 r+3f rv32q rv64q rv128q
+|fsgnjn.q | frd frs1 frs2 31..27=0x04 14..12=1 26..25=3 6..2=0x14 1..0=3 r+3f rv32q rv64q rv128q
+|fsgnjx.q | frd frs1 frs2 31..27=0x04 14..12=2 26..25=3 6..2=0x14 1..0=3 r+3f rv32q rv64q rv128q
+|fmin.q | frd frs1 frs2 31..27=0x05 14..12=0 26..25=3 6..2=0x14 1..0=3 r+3f rv32q rv64q rv128q
+|fmax.q | frd frs1 frs2 31..27=0x05 14..12=1 26..25=3 6..2=0x14 1..0=3 r+3f rv32q rv64q rv128q
+|fcvt.s.q | frd frs1 24..20=3 31..27=0x08 rm 26..25=0 6..2=0x14 1..0=3 r·m+ff rv32q rv64q rv128q
+|fcvt.q.s | frd frs1 24..20=0 31..27=0x08 rm 26..25=3 6..2=0x14 1..0=3 r·m+ff rv32q rv64q rv128q
+|fcvt.d.q | frd frs1 24..20=3 31..27=0x08 rm 26..25=1 6..2=0x14 1..0=3 r·m+ff rv32q rv64q rv128q
+|fcvt.q.d | frd frs1 24..20=1 31..27=0x08 rm 26..25=3 6..2=0x14 1..0=3 r·m+ff rv32q rv64q rv128q
+|fsqrt.q | frd frs1 24..20=0 31..27=0x0B rm 26..25=3 6..2=0x14 1..0=3 r·m+ff rv32q rv64q rv128q
+|fle.q | rd frs1 frs2 31..27=0x14 14..12=0 26..25=3 6..2=0x14 1..0=3 r+rff rv32q rv64q rv128q
+|flt.q | rd frs1 frs2 31..27=0x14 14..12=1 26..25=3 6..2=0x14 1..0=3 r+rff rv32q rv64q rv128q
+|feq.q | rd frs1 frs2 31..27=0x14 14..12=2 26..25=3 6..2=0x14 1..0=3 r+rff rv32q rv64q rv128q
+|fcvt.w.q | rd frs1 24..20=0 31..27=0x18 rm 26..25=3 6..2=0x14 1..0=3 r·m+rf rv32q rv64q rv128q
+|fcvt.wu.q| rd frs1 24..20=1 31..27=0x18 rm 26..25=3 6..2=0x14 1..0=3 r·m+rf rv32q rv64q rv128q
+|fcvt.q.w | frd rs1 24..20=0 31..27=0x1A rm 26..25=3 6..2=0x14 1..0=3 r·m+fr rv32q rv64q rv128q
+|fcvt.q.wu| frd rs1 24..20=1 31..27=0x1A rm 26..25=3 6..2=0x14 1..0=3 r·m+fr rv32q rv64q rv128q
+|fclass.q | rd frs1 24..20=0 31..27=0x1C 14..12=1 26..25=3 6..2=0x14 1..0=3 r+rf rv32q rv64q rv128q
+
+# RV64Q "RV64Q Standard Extension for Quad-Precision Floating-Point (in addition to RV32Q)"
+
+| (23..18) | (17..12) | (11..6) | (5...0) |
+| -------- | -------- | ------- | ------- |
+|fcvt.l.q | rd frs1 24..20=2 31..27=0x18 rm 26..25=3 6..2=0x14 1..0=3 r·m+rf rv64q rv128q
+|fcvt.lu.q| rd frs1 24..20=3 31..27=0x18 rm 26..25=3 6..2=0x14 1..0=3 r·m+rf rv64q rv128q
+|fcvt.q.l | frd rs1 24..20=2 31..27=0x1A rm 26..25=3 6..2=0x14 1..0=3 r·m+fr rv64q rv128q
+|fcvt.q.lu| frd rs1 24..20=3 31..27=0x1A rm 26..25=3 6..2=0x14 1..0=3 r·m+fr rv64q rv128q
+
+# RV128Q "RV128Q Standard Extension for Quadruple-Precision Floating-Point (in addition to RV64Q)"
+
+| (23..18) | (17..12) | (11..6) | (5...0) |
+| -------- | -------- | ------- | ------- |
+|fmv.x.q | rd frs1 24..20=0 31..27=0x1C 14..12=0 26..25=3 6..2=0x14 1..0=3 r+rf rv64q rv128q
+|fmv.q.x | frd rs1 24..20=0 31..27=0x1E 14..12=0 26..25=3 6..2=0x14 1..0=3 r+fr rv64q rv128q
+
+# RV32C "RV32C Standard Extension for Compressed Instructions"
+
+| (23..18) | (17..12) | (11..6) | (5...0) |
+| -------- | -------- | ------- | ------- |
+|c.addi4spn|crdq cimm4spn 1..0=0 15..13=0 ciw·4spn rv32c rv64c
+|c.fld | cfrdq crs1q cimmd 1..0=0 15..13=1 cl·ld+f rv32c rv64c
+|c.lw | crdq crs1q cimmw 1..0=0 15..13=2 cl·lw rv32c rv64c
+|c.flw | cfrdq crs1q cimmw 1..0=0 15..13=3 cl·lw+f rv32c
+|c.fsd | crs1q cfrs2q cimmd 1..0=0 15..13=5 cs·sd+f rv32c rv64c
+|c.sw | crs1q crs2q cimmw 1..0=0 15..13=6 cs·sw rv32c rv64c
+|c.fsw | crs1q cfrs2q cimmw 1..0=0 15..13=7 cs·sw+f rv32c
+|c.nop | 1..0=1 15..13=0 12=0 11..7=0 6..2=0 ci·none rv32c rv64c
+|c.addi | crs1rd cnzimmi 1..0=1 15..13=0 ci rv32c rv64c
+|c.jal | cimmj 1..0=1 15..13=1 cj·jal rv32c
+|c.li | crs1rd cimmi 1..0=1 15..13=2 ci·li rv32c rv64c
+|c.addi16sp|crs1rd cimm16sp 1..0=1 15..13=3 11..7=2 ci·16sp rv32c rv64c
+|c.lui | crd cimmui 1..0=1 15..13=3 ci·lui rv32c rv64c
+|c.srli | crs1rdq cimmsh5 1..0=1 15..13=4 11..10=0 cb·sh5 rv32c
+|c.srai | crs1rdq cimmsh5 1..0=1 15..13=4 11..10=1 cb·sh5 rv32c
+|c.andi | crs1rdq cnzimmi 1..0=1 15..13=4 11..10=2 cb·imm rv32c rv64c
+|c.sub | crs1rdq crs2q 1..0=1 15..13=4 12=0 11..10=3 6..5=0 cs rv32c rv64c
+|c.xor | crs1rdq crs2q 1..0=1 15..13=4 12=0 11..10=3 6..5=1 cs rv32c rv64c
+|c.or | crs1rdq crs2q 1..0=1 15..13=4 12=0 11..10=3 6..5=2 cs rv32c rv64c
+|c.and | crs1rdq crs2q 1..0=1 15..13=4 12=0 11..10=3 6..5=3 cs rv32c rv64c
+|c.subw | crs1rdq crs2q 1..0=1 15..13=4 12=1 11..10=3 6..5=0 cs rv32c rv64c
+|c.addw | crs1rdq crs2q 1..0=1 15..13=4 12=1 11..10=3 6..5=1 cs rv32c rv64c
+|c.j | cimmj 1..0=1 15..13=5 cj rv32c rv64c
+|c.beqz | crs1q cimmb 1..0=1 15..13=6 cb rv32c rv64c
+|c.bnez | crs1q cimmb 1..0=1 15..13=7 cb rv32c rv64c
+|c.slli | crs1rd cimmsh5 1..0=2 15..13=0 ci·sh5 rv32c
+|c.fldsp | cfrd cimmldsp 1..0=2 15..13=1 ci·ldsp+f rv32c rv64c
+|c.lwsp | crd cimmlwsp 1..0=2 15..13=2 ci·lwsp rv32c rv64c
+|c.flwsp | cfrd cimmlwsp 1..0=2 15..13=3 ci·lwsp+f rv32c
+|c.jr | crd0 crs1 1..0=2 15..13=4 12=0 6..2=0 cr·jr rv32c rv64c
+|c.mv | crd crs2 1..0=2 15..13=4 12=0 cr·mv rv32c rv64c
+|c.ebreak | 1..0=2 15..13=4 12=1 11..7=0 6..2=0 ci·none rv32c rv64c
+|c.jalr | crd0 crs1 1..0=2 15..13=4 12=1 6..2=0 cr·jalr rv32c rv64c
+|c.add | crs1rd crs2 1..0=2 15..13=4 12=1 cr rv32c rv64c
+|c.fsdsp | cfrs2 cimmsdsp 1..0=2 15..13=5 css·sdsp+f rv32c rv64c
+|c.swsp | crs2 cimmswsp 1..0=2 15..13=6 css·swsp rv32c rv64c
+|c.fswsp | cfrs2 cimmswsp 1..0=2 15..13=7 css·swsp+f rv32c
+
+# RV64C "RV64C Standard Extension for Compressed Instructions (in addition to RV32C)"
+
+| (23..18) | (17..12) | (11..6) | (5...0) |
+| -------- | -------- | ------- | ------- |
+|c.ld | crdq crs1q cimmd 1..0=0 15..13=3 cl·ld rv64c
+|c.sd | crs1q crs2q cimmd 1..0=0 15..13=7 cs·sd rv64c
+|c.addiw | crs1rd cimmi 1..0=1 15..13=1 ci rv64c
+|c.srli | crs1rdq cimmsh6 1..0=1 15..13=4 11..10=0 cb·sh6 rv64c
+|c.srai | crs1rdq cimmsh6 1..0=1 15..13=4 11..10=1 cb·sh6 rv64c
+|c.slli | crs1rd cimmsh6 1..0=2 15..13=0 ci·sh6 rv64c
+|c.ldsp | crd cimmldsp 1..0=2 15..13=3 ci·ldsp rv64c
+|c.sdsp | crs2 cimmsdsp 1..0=2 15..13=7 css·sdsp rv64c
+
+# RV128C "RV128C Standard Extension for Compressed Instructions (in addition to RV64C)"
+
+| (23..18) | (17..12) | (11..6) | (5...0) |
+| -------- | -------- | ------- | ------- |
+|c.lq | crdq crs1q cimmq 1..0=0 15..13=1 cl·lq rv128c
+|c.sq | crs1q crs2q cimmq 1..0=0 15..13=5 cs·sq rv128c
+|c.lqsp | crd cimmlqsp 1..0=2 15..13=1 ci·lqsp rv128c
+|c.sqsp | crs2 cimmsqsp 1..0=2 15..13=5 css·sqsp rv128c