opcode-classes

# RV32I
lui        alu
auipc      alu
jal        jump
jalr       jump,indirect
beq        branch
bne        branch
blt        branch
bge        branch
bltu       branch
bgeu       branch
lb         load
lh         load
lw         load
lbu        load
lhu        load
lwu        load
sb         store
sh         store
sw         store
addi       alu
slti       alu
sltiu      alu
xori       alu
ori        alu
andi       alu
slli       alu
srli       alu
srai       alu
add        alu
sub        alu
sll        alu
slt        alu
sltu       alu
xor        alu
srl        alu
sra        alu
or         alu
and        alu
fence      fence
fence.i    fence

# RV64I
ld         load
sd         store
addiw      alu
slliw      alu
srliw      alu
sraiw      alu
addw       alu
subw       alu
sllw       alu
srlw       alu
sraw       alu

# RV32M
mul        alu,multiply
mulh       alu,multiply
mulhsu     alu,multiply
mulhu      alu,multiply
div        alu,divide
divu       alu,divide
rem        alu,divide
remu       alu,divide

# RV64M 
mulw       alu,multiply
divw       alu,multiply
divuw      alu,multiply
remw       alu,divide
remuw      alu,divide

# RV32A    "RV32A Standard Extension for Atomic Instructions"

lr.w       atomic
sc.w       atomic
amoswap.w  atomic
amoadd.w   atomic
amoxor.w   atomic
amoor.w    atomic
amoand.w   atomic
amomin.w   atomic
amomax.w   atomic
amominu.w  atomic
amomaxu.w  atomic

# RV64A    "RV64A Standard Extension for Atomic Instructions (in addition to RV32A)"

lr.d       atomic
sc.d       atomic
amoswap.d  atomic
amoadd.d   atomic
amoxor.d   atomic
amoor.d    atomic
amoand.d   atomic
amomin.d   atomic
amomax.d   atomic
amominu.d  atomic
amomaxu.d  atomic

# RV32S    "RV32S Standard Extension for Supervisor-level Instructions"

ecall      system
ebreak     system
uret       system
sret       system
hret       system
mret       system
dret       system
sfence.vm  system
wfi        system
rdcycle    csr
rdtime     csr
rdinstret  csr
rdcycleh   csr
rdtimeh    csr
rdinstreth csr
csrrw      csr
csrrs      csr
csrrc      csr
csrrwi     csr
csrrsi     csr
csrrci     csr

# RV32F    "RV32F Standard Extension for Single-Precision Floating-Point"

flw        fpu,load
fsw        fpu,store
fmadd.s    fpu,fma
fmsub.s    fpu,fma
fnmadd.s   fpu,fma
fnmsub.s   fpu,fma
fadd.s     fpu
fsub.s     fpu
fmul.s     fpu
fdiv.s     fpu,fdiv
fsgnj.s    fpu
fsgnjn.s   fpu
fsgnjx.s   fpu
fmin.s     fpu
fmax.s     fpu
fsqrt.s    fpu,fsqrt
fle.s      fpu
flt.s      fpu
feq.s      fpu
fcvt.w.s   fpu,fcvt
fcvt.wu.s  fpu,fcvt
fcvt.s.w   fpu,fcvt
fcvt.s.wu  fpu,fcvt
fmv.x.s    fpu,fmove
fclass.s   fpu
fmv.s.x    fpu,fmove

# RV64F    "RV64F Standard Extension for Single-Precision Floating-Point (in addition to RV32F)"

fcvt.l.s   fpu,fcvt
fcvt.lu.s  fpu,fcvt
fcvt.s.l   fpu,fcvt
fcvt.s.lu  fpu,fcvt

# RV32D    "RV32D Standard Extension for Double-Precision Floating-Point"

fld        fpu,load
fsd        fpu,store
fmadd.d    fpu,fma
fmsub.d    fpu,fma
fnmadd.d   fpu,fma
fnmsub.d   fpu,fma
fadd.d     fpu
fsub.d     fpu
fmul.d     fpu
fdiv.d     fpu,fdiv
fsgnj.d    fpu
fsgnjn.d   fpu
fsgnjx.d   fpu
fmin.d     fpu
fmax.d     fpu
fcvt.s.d   fpu,fcvt
fcvt.d.s   fpu,fcvt
fsqrt.d    fpu,fsqrt
fle.d      fpu
flt.d      fpu
feq.d      fpu
fcvt.w.d   fpu,fcvt
fcvt.wu.d  fpu,fcvt
fcvt.d.w   fpu,fcvt
fcvt.d.wu  fpu,fcvt
fclass.d   fpu

# RV64D    "RV64D Standard Extension for Double-Precision Floating-Point (in addition to RV32D)"

fcvt.l.d   fpu,fcvt
fcvt.lu.d  fpu,fcvt
fmv.x.d    fpu,fmove
fcvt.d.l   fpu,fcvt
fcvt.d.lu  fpu,fcvt
fmv.d.x    fpu,fmove

# RV32FD   "RV32F and RV32D Common Floating-Point Instructions"

frcsr      csr
frrm       csr
frflags    csr
fscsr      csr
fsrm       csr
fsflags    csr
fsrmi      csr
fsflagsi   csr