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opcodes-sflt_CUSTOM
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opcodes-sflt_CUSTOM
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# Smallfloat extension
# format of a line in this file:
# <instruction name> <args> <opcode>
#
# <opcode> is given by specifying one or more range/value pairs:
# hi..lo=value or bit=value or arg=value (e.g. 6..2=0x45 10=1 rd=0)
#
# <args> is one of rd, rs1, rs2, rs3, aqrl, fm, pred, succ, rm,
# funct3, imm20, jimm20, imm12, imm12hi, bimm12hi, imm12lo,
# bimm12lo, zimm, shamt, shamtw, imm5, imm6, vd, vs3, vs1, vs2,
# vm, wd, amoop, nf, simm5, zimm11, prs3, L, uimms, Luimm5,
# vseglen, stagger_max, stagger_mask
# SMALLFLOAT SCALAR (fmt: 0=s, 1=d, 2=h (ha with rm=0b101) 3=b)
# same instrucion format as F extension
# collected under "Xsmallfloat" name - naming not final
# RV32Xfalthalf - alternate half-precision floats
@flah rd rs1 imm12 14..12=1 6..2=0x01 1..0=3
@fsah imm12hi rs1 rs2 imm12lo 14..12=1 6..2=0x09 1..0=3
fmadd.ah rd rs1 rs2 rs3 14..12=5 26..25=2 6..2=0x10 1..0=3
fmsub.ah rd rs1 rs2 rs3 14..12=5 26..25=2 6..2=0x11 1..0=3
fnmsub.ah rd rs1 rs2 rs3 14..12=5 26..25=2 6..2=0x12 1..0=3
fnmadd.ah rd rs1 rs2 rs3 14..12=5 26..25=2 6..2=0x13 1..0=3
fadd.ah rd rs1 rs2 31..27=0x00 14..12=5 26..25=2 6..2=0x14 1..0=3
fsub.ah rd rs1 rs2 31..27=0x01 14..12=5 26..25=2 6..2=0x14 1..0=3
fmul.ah rd rs1 rs2 31..27=0x02 14..12=5 26..25=2 6..2=0x14 1..0=3
fdiv.ah rd rs1 rs2 31..27=0x03 14..12=5 26..25=2 6..2=0x14 1..0=3
fsqrt.ah rd rs1 24..20=0 31..27=0x0B 14..12=5 26..25=2 6..2=0x14 1..0=3
fsgnj.ah rd rs1 rs2 31..27=0x04 14..12=4 26..25=2 6..2=0x14 1..0=3
fsgnjn.ah rd rs1 rs2 31..27=0x04 14..12=5 26..25=2 6..2=0x14 1..0=3
fsgnjx.ah rd rs1 rs2 31..27=0x04 14..12=6 26..25=2 6..2=0x14 1..0=3
fmin.ah rd rs1 rs2 31..27=0x05 14..12=4 26..25=2 6..2=0x14 1..0=3
fmax.ah rd rs1 rs2 31..27=0x05 14..12=5 26..25=2 6..2=0x14 1..0=3
feq.ah rd rs1 rs2 31..27=0x14 14..12=6 26..25=2 6..2=0x14 1..0=3
flt.ah rd rs1 rs2 31..27=0x14 14..12=5 26..25=2 6..2=0x14 1..0=3
fle.ah rd rs1 rs2 31..27=0x14 14..12=4 26..25=2 6..2=0x14 1..0=3
fcvt.w.ah rd rs1 24..20=0 31..27=0x18 14..12=5 26..25=2 6..2=0x14 1..0=3
fcvt.wu.ah rd rs1 24..20=1 31..27=0x18 14..12=5 26..25=2 6..2=0x14 1..0=3
fcvt.ah.w rd rs1 24..20=0 31..27=0x1A 14..12=5 26..25=2 6..2=0x14 1..0=3
fcvt.ah.wu rd rs1 24..20=1 31..27=0x1A 14..12=5 26..25=2 6..2=0x14 1..0=3
fmv.x.ah rd rs1 24..20=0 31..27=0x1C 14..12=4 26..25=2 6..2=0x14 1..0=3
fclass.ah rd rs1 24..20=0 31..27=0x1C 14..12=5 26..25=2 6..2=0x14 1..0=3
fmv.ah.x rd rs1 24..20=0 31..27=0x1E 14..12=4 26..25=2 6..2=0x14 1..0=3
# RV64Xfalthalf: in addition to the above
fcvt.l.ah rd rs1 24..20=2 31..27=0x18 14..12=5 26..25=2 6..2=0x14 1..0=3
fcvt.lu.ah rd rs1 24..20=3 31..27=0x18 14..12=5 26..25=2 6..2=0x14 1..0=3
fcvt.ah.l rd rs1 24..20=2 31..27=0x1A 14..12=5 26..25=2 6..2=0x14 1..0=3
fcvt.ah.lu rd rs1 24..20=3 31..27=0x1A 14..12=5 26..25=2 6..2=0x14 1..0=3
# XfalthalfwithF - alternate half-precision conversions with F extension
fcvt.s.ah rd rs1 24..20=6 31..27=0x08 14..12=0 26..25=0 6..2=0x14 1..0=3
fcvt.ah.s rd rs1 24..20=0 31..27=0x08 14..12=5 26..25=2 6..2=0x14 1..0=3
# XfalthalfwithD - alternate half-precision conversions with D extension (in addition to XfalthalfwithF)
fcvt.d.ah rd rs1 24..20=6 31..27=0x08 14..12=0 26..25=1 6..2=0x14 1..0=3
fcvt.ah.d rd rs1 24..20=1 31..27=0x08 14..12=5 26..25=2 6..2=0x14 1..0=3
# Xfalthalfwithhalf - alternate half-precision conversions with Xfhalf extension
fcvt.h.ah rd rs1 24..20=6 31..27=0x08 rm 26..25=2 6..2=0x14 1..0=3
fcvt.ah.h rd rs1 24..20=2 31..27=0x08 14..12=5 26..25=2 6..2=0x14 1..0=3
# RV32Xfquarter - quarter-precision floats
# b collides with quad precision (q) so they are pseudo here.
# TODO: might need to change Snitch s.t. flb, fsb are used with @
@flb rd rs1 imm12 14..12=0 6..2=0x01 1..0=3
@fsb imm12hi rs1 rs2 imm12lo 14..12=0 6..2=0x09 1..0=3
@fmadd.b rd rs1 rs2 rs3 rm 26..25=3 6..2=0x10 1..0=3
@fmsub.b rd rs1 rs2 rs3 rm 26..25=3 6..2=0x11 1..0=3
@fnmsub.b rd rs1 rs2 rs3 rm 26..25=3 6..2=0x12 1..0=3
@fnmadd.b rd rs1 rs2 rs3 rm 26..25=3 6..2=0x13 1..0=3
@fadd.b rd rs1 rs2 31..27=0x00 rm 26..25=3 6..2=0x14 1..0=3
@fsub.b rd rs1 rs2 31..27=0x01 rm 26..25=3 6..2=0x14 1..0=3
@fmul.b rd rs1 rs2 31..27=0x02 rm 26..25=3 6..2=0x14 1..0=3
@fdiv.b rd rs1 rs2 31..27=0x03 rm 26..25=3 6..2=0x14 1..0=3
@fsqrt.b rd rs1 24..20=0 31..27=0x0B rm 26..25=3 6..2=0x14 1..0=3
@fsgnj.b rd rs1 rs2 31..27=0x04 14..12=0 26..25=3 6..2=0x14 1..0=3
@fsgnjn.b rd rs1 rs2 31..27=0x04 14..12=1 26..25=3 6..2=0x14 1..0=3
@fsgnjx.b rd rs1 rs2 31..27=0x04 14..12=2 26..25=3 6..2=0x14 1..0=3
@fmin.b rd rs1 rs2 31..27=0x05 14..12=0 26..25=3 6..2=0x14 1..0=3
@fmax.b rd rs1 rs2 31..27=0x05 14..12=1 26..25=3 6..2=0x14 1..0=3
@feq.b rd rs1 rs2 31..27=0x14 14..12=2 26..25=3 6..2=0x14 1..0=3
@flt.b rd rs1 rs2 31..27=0x14 14..12=1 26..25=3 6..2=0x14 1..0=3
@fle.b rd rs1 rs2 31..27=0x14 14..12=0 26..25=3 6..2=0x14 1..0=3
@fcvt.w.b rd rs1 24..20=0 31..27=0x18 rm 26..25=3 6..2=0x14 1..0=3
@fcvt.wu.b rd rs1 24..20=1 31..27=0x18 rm 26..25=3 6..2=0x14 1..0=3
@fcvt.b.w rd rs1 24..20=0 31..27=0x1A rm 26..25=3 6..2=0x14 1..0=3
@fcvt.b.wu rd rs1 24..20=1 31..27=0x1A rm 26..25=3 6..2=0x14 1..0=3
@fmv.x.b rd rs1 24..20=0 31..27=0x1C 14..12=0 26..25=3 6..2=0x14 1..0=3
@fclass.b rd rs1 24..20=0 31..27=0x1C 14..12=1 26..25=3 6..2=0x14 1..0=3
@fmv.b.x rd rs1 24..20=0 31..27=0x1E 14..12=0 26..25=3 6..2=0x14 1..0=3
# RV64Xfquarter: in addition to the above
@fcvt.l.b rd rs1 24..20=2 31..27=0x18 rm 26..25=3 6..2=0x14 1..0=3
@fcvt.lu.b rd rs1 24..20=3 31..27=0x18 rm 26..25=3 6..2=0x14 1..0=3
@fcvt.b.l rd rs1 24..20=2 31..27=0x1A rm 26..25=3 6..2=0x14 1..0=3
@fcvt.b.lu rd rs1 24..20=3 31..27=0x1A rm 26..25=3 6..2=0x14 1..0=3
# XfquarterwithF - quarter-precision conversions with F extension
@fcvt.s.b rd rs1 24..20=3 31..27=0x08 14..12=0 26..25=0 6..2=0x14 1..0=3
@fcvt.b.s rd rs1 24..20=0 31..27=0x08 rm 26..25=3 6..2=0x14 1..0=3
# XfquarterwithD - quarter-precision conversions with D extension (in addition to XfquarterwithF)
@fcvt.d.b rd rs1 24..20=3 31..27=0x08 14..12=0 26..25=1 6..2=0x14 1..0=3
@fcvt.b.d rd rs1 24..20=1 31..27=0x08 rm 26..25=3 6..2=0x14 1..0=3
# Xfquarterwithhalf - quarter-precision conversions with Xfhalf extension
# TODO: might need to change Snitch s.t. fcvt.h.b, fcvt.b.h are used with @
@fcvt.h.b rd rs1 24..20=3 31..27=0x08 14..12=0 26..25=2 6..2=0x14 1..0=3
@fcvt.b.h rd rs1 24..20=2 31..27=0x08 rm 26..25=3 6..2=0x14 1..0=3
# Xfquarterwithalthalf - quarter-precision conversions with Xfalthalf extension
fcvt.ah.b rd rs1 24..20=3 31..27=0x08 14..12=5 26..25=2 6..2=0x14 1..0=3
fcvt.b.ah rd rs1 24..20=6 31..27=0x08 rm 26..25=3 6..2=0x14 1..0=3
#SMALLFLOAT VECTORIAL (vfmt: 0=s (ILLEGAL in RV32), 1=ah, 2=h, 3=b)
# 31..30=2 29..25=vecfltop rs2 rs1 14=R 13..12=vfmt rd 6..2=OP 1..0=3
# 29..25=0x00 is already used by a bitman instruction
# collected under Xfvec - naming not final
# Xfvecsingle - vectorial single-precision floats - requires FLEN >= 64
vfadd.s rd rs1 rs2 31..30=2 29..25=0x01 14=0 13..12=0 6..2=0x0C 1..0=3
vfadd.r.s rd rs1 rs2 31..30=2 29..25=0x01 14=1 13..12=0 6..2=0x0C 1..0=3
vfsub.s rd rs1 rs2 31..30=2 29..25=0x02 14=0 13..12=0 6..2=0x0C 1..0=3
vfsub.r.s rd rs1 rs2 31..30=2 29..25=0x02 14=1 13..12=0 6..2=0x0C 1..0=3
vfmul.s rd rs1 rs2 31..30=2 29..25=0x03 14=0 13..12=0 6..2=0x0C 1..0=3
vfmul.r.s rd rs1 rs2 31..30=2 29..25=0x03 14=1 13..12=0 6..2=0x0C 1..0=3
vfdiv.s rd rs1 rs2 31..30=2 29..25=0x04 14=0 13..12=0 6..2=0x0C 1..0=3
vfdiv.r.s rd rs1 rs2 31..30=2 29..25=0x04 14=1 13..12=0 6..2=0x0C 1..0=3
vfmin.s rd rs1 rs2 31..30=2 29..25=0x05 14=0 13..12=0 6..2=0x0C 1..0=3
vfmin.r.s rd rs1 rs2 31..30=2 29..25=0x05 14=1 13..12=0 6..2=0x0C 1..0=3
vfmax.s rd rs1 rs2 31..30=2 29..25=0x06 14=0 13..12=0 6..2=0x0C 1..0=3
vfmax.r.s rd rs1 rs2 31..30=2 29..25=0x06 14=1 13..12=0 6..2=0x0C 1..0=3
vfsqrt.s rd rs1 24..20=0 31..30=2 29..25=0x07 14=0 13..12=0 6..2=0x0C 1..0=3
vfmac.s rd rs1 rs2 31..30=2 29..25=0x08 14=0 13..12=0 6..2=0x0C 1..0=3
vfmac.r.s rd rs1 rs2 31..30=2 29..25=0x08 14=1 13..12=0 6..2=0x0C 1..0=3
vfmre.s rd rs1 rs2 31..30=2 29..25=0x09 14=0 13..12=0 6..2=0x0C 1..0=3
vfmre.r.s rd rs1 rs2 31..30=2 29..25=0x09 14=1 13..12=0 6..2=0x0C 1..0=3
vfclass.s rd rs1 24..20=1 31..30=2 29..25=0x0C 14=0 13..12=0 6..2=0x0C 1..0=3
vfsgnj.s rd rs1 rs2 31..30=2 29..25=0x0D 14=0 13..12=0 6..2=0x0C 1..0=3
vfsgnj.r.s rd rs1 rs2 31..30=2 29..25=0x0D 14=1 13..12=0 6..2=0x0C 1..0=3
vfsgnjn.s rd rs1 rs2 31..30=2 29..25=0x0E 14=0 13..12=0 6..2=0x0C 1..0=3
vfsgnjn.r.s rd rs1 rs2 31..30=2 29..25=0x0E 14=1 13..12=0 6..2=0x0C 1..0=3
vfsgnjx.s rd rs1 rs2 31..30=2 29..25=0x0F 14=0 13..12=0 6..2=0x0C 1..0=3
vfsgnjx.r.s rd rs1 rs2 31..30=2 29..25=0x0F 14=1 13..12=0 6..2=0x0C 1..0=3
vfeq.s rd rs1 rs2 31..30=2 29..25=0x10 14=0 13..12=0 6..2=0x0C 1..0=3
vfeq.r.s rd rs1 rs2 31..30=2 29..25=0x10 14=1 13..12=0 6..2=0x0C 1..0=3
vfne.s rd rs1 rs2 31..30=2 29..25=0x11 14=0 13..12=0 6..2=0x0C 1..0=3
vfne.r.s rd rs1 rs2 31..30=2 29..25=0x11 14=1 13..12=0 6..2=0x0C 1..0=3
vflt.s rd rs1 rs2 31..30=2 29..25=0x12 14=0 13..12=0 6..2=0x0C 1..0=3
vflt.r.s rd rs1 rs2 31..30=2 29..25=0x12 14=1 13..12=0 6..2=0x0C 1..0=3
vfge.s rd rs1 rs2 31..30=2 29..25=0x13 14=0 13..12=0 6..2=0x0C 1..0=3
vfge.r.s rd rs1 rs2 31..30=2 29..25=0x13 14=1 13..12=0 6..2=0x0C 1..0=3
vfle.s rd rs1 rs2 31..30=2 29..25=0x14 14=0 13..12=0 6..2=0x0C 1..0=3
vfle.r.s rd rs1 rs2 31..30=2 29..25=0x14 14=1 13..12=0 6..2=0x0C 1..0=3
vfgt.s rd rs1 rs2 31..30=2 29..25=0x15 14=0 13..12=0 6..2=0x0C 1..0=3
vfgt.r.s rd rs1 rs2 31..30=2 29..25=0x15 14=1 13..12=0 6..2=0x0C 1..0=3
# XfvecsinglenothirtytwoD: only unless RV32D
vfmv.x.s rd rs1 24..20=0 31..30=2 29..25=0x0C 14=0 13..12=0 6..2=0x0C 1..0=3
vfmv.s.x rd rs1 24..20=0 31..30=2 29..25=0x0C 14=1 13..12=0 6..2=0x0C 1..0=3
vfcvt.x.s rd rs1 24..20=2 31..30=2 29..25=0x0C 14=0 13..12=0 6..2=0x0C 1..0=3
vfcvt.xu.s rd rs1 24..20=2 31..30=2 29..25=0x0C 14=1 13..12=0 6..2=0x0C 1..0=3
vfcvt.s.x rd rs1 24..20=3 31..30=2 29..25=0x0C 14=0 13..12=0 6..2=0x0C 1..0=3
vfcvt.s.xu rd rs1 24..20=3 31..30=2 29..25=0x0C 14=1 13..12=0 6..2=0x0C 1..0=3
# XfvecsinglewithF - vectorial single-precision conversions with F extension, a-d legality depends on FLEN
vfcpka.s.s rd rs1 rs2 31..30=2 29..25=0x18 14=0 13..12=0 6..2=0x0C 1..0=3
vfcpkb.s.s rd rs1 rs2 31..30=2 29..25=0x18 14=1 13..12=0 6..2=0x0C 1..0=3
vfcpkc.s.s rd rs1 rs2 31..30=2 29..25=0x19 14=0 13..12=0 6..2=0x0C 1..0=3
vfcpkd.s.s rd rs1 rs2 31..30=2 29..25=0x19 14=1 13..12=0 6..2=0x0C 1..0=3
# XfvecsinglewithD - vectorial single-precision conversions with D extension, a-d legality depends on FLEN (in addition to the above)
vfcpka.s.d rd rs1 rs2 31..30=2 29..25=0x1A 14=0 13..12=0 6..2=0x0C 1..0=3
vfcpkb.s.d rd rs1 rs2 31..30=2 29..25=0x1A 14=1 13..12=0 6..2=0x0C 1..0=3
vfcpkc.s.d rd rs1 rs2 31..30=2 29..25=0x1B 14=0 13..12=0 6..2=0x0C 1..0=3
vfcpkd.s.d rd rs1 rs2 31..30=2 29..25=0x1B 14=1 13..12=0 6..2=0x0C 1..0=3
# Xfvechalf - vectorial half-precision floats - requires FLEN >= 32
vfadd.h rd rs1 rs2 31..30=2 29..25=0x01 14=0 13..12=2 6..2=0x0C 1..0=3
vfadd.r.h rd rs1 rs2 31..30=2 29..25=0x01 14=1 13..12=2 6..2=0x0C 1..0=3
vfsub.h rd rs1 rs2 31..30=2 29..25=0x02 14=0 13..12=2 6..2=0x0C 1..0=3
vfsub.r.h rd rs1 rs2 31..30=2 29..25=0x02 14=1 13..12=2 6..2=0x0C 1..0=3
vfmul.h rd rs1 rs2 31..30=2 29..25=0x03 14=0 13..12=2 6..2=0x0C 1..0=3
vfmul.r.h rd rs1 rs2 31..30=2 29..25=0x03 14=1 13..12=2 6..2=0x0C 1..0=3
vfdiv.h rd rs1 rs2 31..30=2 29..25=0x04 14=0 13..12=2 6..2=0x0C 1..0=3
vfdiv.r.h rd rs1 rs2 31..30=2 29..25=0x04 14=1 13..12=2 6..2=0x0C 1..0=3
vfmin.h rd rs1 rs2 31..30=2 29..25=0x05 14=0 13..12=2 6..2=0x0C 1..0=3
vfmin.r.h rd rs1 rs2 31..30=2 29..25=0x05 14=1 13..12=2 6..2=0x0C 1..0=3
vfmax.h rd rs1 rs2 31..30=2 29..25=0x06 14=0 13..12=2 6..2=0x0C 1..0=3
vfmax.r.h rd rs1 rs2 31..30=2 29..25=0x06 14=1 13..12=2 6..2=0x0C 1..0=3
vfsqrt.h rd rs1 24..20=0 31..30=2 29..25=0x07 14=0 13..12=2 6..2=0x0C 1..0=3
vfmac.h rd rs1 rs2 31..30=2 29..25=0x08 14=0 13..12=2 6..2=0x0C 1..0=3
vfmac.r.h rd rs1 rs2 31..30=2 29..25=0x08 14=1 13..12=2 6..2=0x0C 1..0=3
vfmre.h rd rs1 rs2 31..30=2 29..25=0x09 14=0 13..12=2 6..2=0x0C 1..0=3
vfmre.r.h rd rs1 rs2 31..30=2 29..25=0x09 14=1 13..12=2 6..2=0x0C 1..0=3
vfclass.h rd rs1 24..20=1 31..30=2 29..25=0x0C 14=0 13..12=2 6..2=0x0C 1..0=3
vfsgnj.h rd rs1 rs2 31..30=2 29..25=0x0D 14=0 13..12=2 6..2=0x0C 1..0=3
vfsgnj.r.h rd rs1 rs2 31..30=2 29..25=0x0D 14=1 13..12=2 6..2=0x0C 1..0=3
vfsgnjn.h rd rs1 rs2 31..30=2 29..25=0x0E 14=0 13..12=2 6..2=0x0C 1..0=3
vfsgnjn.r.h rd rs1 rs2 31..30=2 29..25=0x0E 14=1 13..12=2 6..2=0x0C 1..0=3
vfsgnjx.h rd rs1 rs2 31..30=2 29..25=0x0F 14=0 13..12=2 6..2=0x0C 1..0=3
vfsgnjx.r.h rd rs1 rs2 31..30=2 29..25=0x0F 14=1 13..12=2 6..2=0x0C 1..0=3
vfeq.h rd rs1 rs2 31..30=2 29..25=0x10 14=0 13..12=2 6..2=0x0C 1..0=3
vfeq.r.h rd rs1 rs2 31..30=2 29..25=0x10 14=1 13..12=2 6..2=0x0C 1..0=3
vfne.h rd rs1 rs2 31..30=2 29..25=0x11 14=0 13..12=2 6..2=0x0C 1..0=3
vfne.r.h rd rs1 rs2 31..30=2 29..25=0x11 14=1 13..12=2 6..2=0x0C 1..0=3
vflt.h rd rs1 rs2 31..30=2 29..25=0x12 14=0 13..12=2 6..2=0x0C 1..0=3
vflt.r.h rd rs1 rs2 31..30=2 29..25=0x12 14=1 13..12=2 6..2=0x0C 1..0=3
vfge.h rd rs1 rs2 31..30=2 29..25=0x13 14=0 13..12=2 6..2=0x0C 1..0=3
vfge.r.h rd rs1 rs2 31..30=2 29..25=0x13 14=1 13..12=2 6..2=0x0C 1..0=3
vfle.h rd rs1 rs2 31..30=2 29..25=0x14 14=0 13..12=2 6..2=0x0C 1..0=3
vfle.r.h rd rs1 rs2 31..30=2 29..25=0x14 14=1 13..12=2 6..2=0x0C 1..0=3
vfgt.h rd rs1 rs2 31..30=2 29..25=0x15 14=0 13..12=2 6..2=0x0C 1..0=3
vfgt.r.h rd rs1 rs2 31..30=2 29..25=0x15 14=1 13..12=2 6..2=0x0C 1..0=3
# XfvechalfnothirtytwoD: only unless RV32D
vfmv.x.h rd rs1 24..20=0 31..30=2 29..25=0x0C 14=0 13..12=2 6..2=0x0C 1..0=3
vfmv.h.x rd rs1 24..20=0 31..30=2 29..25=0x0C 14=1 13..12=2 6..2=0x0C 1..0=3
vfcvt.x.h rd rs1 24..20=2 31..30=2 29..25=0x0C 14=0 13..12=2 6..2=0x0C 1..0=3
vfcvt.xu.h rd rs1 24..20=2 31..30=2 29..25=0x0C 14=1 13..12=2 6..2=0x0C 1..0=3
vfcvt.h.x rd rs1 24..20=3 31..30=2 29..25=0x0C 14=0 13..12=2 6..2=0x0C 1..0=3
vfcvt.h.xu rd rs1 24..20=3 31..30=2 29..25=0x0C 14=1 13..12=2 6..2=0x0C 1..0=3
# XfvechalfwithF - vectorial half-precision conversions with F extension, a-d legality depends on FLEN
vfcpka.h.s rd rs1 rs2 31..30=2 29..25=0x18 14=0 13..12=2 6..2=0x0C 1..0=3
vfcpkb.h.s rd rs1 rs2 31..30=2 29..25=0x18 14=1 13..12=2 6..2=0x0C 1..0=3
vfcpkc.h.s rd rs1 rs2 31..30=2 29..25=0x19 14=0 13..12=2 6..2=0x0C 1..0=3
vfcpkd.h.s rd rs1 rs2 31..30=2 29..25=0x19 14=1 13..12=2 6..2=0x0C 1..0=3
# XfvechalfwithD - vectorial half-precision conversions with D extension, a-d legality depends on FLEN (in addition to the above)
vfcpka.h.d rd rs1 rs2 31..30=2 29..25=0x1A 14=0 13..12=2 6..2=0x0C 1..0=3
vfcpkb.h.d rd rs1 rs2 31..30=2 29..25=0x1A 14=1 13..12=2 6..2=0x0C 1..0=3
vfcpkc.h.d rd rs1 rs2 31..30=2 29..25=0x1B 14=0 13..12=2 6..2=0x0C 1..0=3
vfcpkd.h.d rd rs1 rs2 31..30=2 29..25=0x1B 14=1 13..12=2 6..2=0x0C 1..0=3
# Xfvecalthalfwithsingle - vectorial half-precision conversions with Xfvecsingle extension
vfcvt.s.h rd rs1 24..20=6 31..30=2 29..25=0x0C 14=0 13..12=0 6..2=0x0C 1..0=3
vfcvtu.s.h rd rs1 24..20=6 31..30=2 29..25=0x0C 14=1 13..12=0 6..2=0x0C 1..0=3
vfcvt.h.s rd rs1 24..20=4 31..30=2 29..25=0x0C 14=0 13..12=2 6..2=0x0C 1..0=3
vfcvtu.h.s rd rs1 24..20=4 31..30=2 29..25=0x0C 14=1 13..12=2 6..2=0x0C 1..0=3
# Xfvecalthalf - vectorial alternate half-precision floats - requires FLEN >= 32
vfadd.ah rd rs1 rs2 31..30=2 29..25=0x01 14=0 13..12=1 6..2=0x0C 1..0=3
vfadd.r.ah rd rs1 rs2 31..30=2 29..25=0x01 14=1 13..12=1 6..2=0x0C 1..0=3
vfsub.ah rd rs1 rs2 31..30=2 29..25=0x02 14=0 13..12=1 6..2=0x0C 1..0=3
vfsub.r.ah rd rs1 rs2 31..30=2 29..25=0x02 14=1 13..12=1 6..2=0x0C 1..0=3
vfmul.ah rd rs1 rs2 31..30=2 29..25=0x03 14=0 13..12=1 6..2=0x0C 1..0=3
vfmul.r.ah rd rs1 rs2 31..30=2 29..25=0x03 14=1 13..12=1 6..2=0x0C 1..0=3
vfdiv.ah rd rs1 rs2 31..30=2 29..25=0x04 14=0 13..12=1 6..2=0x0C 1..0=3
vfdiv.r.ah rd rs1 rs2 31..30=2 29..25=0x04 14=1 13..12=1 6..2=0x0C 1..0=3
vfmin.ah rd rs1 rs2 31..30=2 29..25=0x05 14=0 13..12=1 6..2=0x0C 1..0=3
vfmin.r.ah rd rs1 rs2 31..30=2 29..25=0x05 14=1 13..12=1 6..2=0x0C 1..0=3
vfmax.ah rd rs1 rs2 31..30=2 29..25=0x06 14=0 13..12=1 6..2=0x0C 1..0=3
vfmax.r.ah rd rs1 rs2 31..30=2 29..25=0x06 14=1 13..12=1 6..2=0x0C 1..0=3
vfsqrt.ah rd rs1 24..20=0 31..30=2 29..25=0x07 14=0 13..12=1 6..2=0x0C 1..0=3
vfmac.ah rd rs1 rs2 31..30=2 29..25=0x08 14=0 13..12=1 6..2=0x0C 1..0=3
vfmac.r.ah rd rs1 rs2 31..30=2 29..25=0x08 14=1 13..12=1 6..2=0x0C 1..0=3
vfmre.ah rd rs1 rs2 31..30=2 29..25=0x09 14=0 13..12=1 6..2=0x0C 1..0=3
vfmre.r.ah rd rs1 rs2 31..30=2 29..25=0x09 14=1 13..12=1 6..2=0x0C 1..0=3
vfclass.ah rd rs1 24..20=1 31..30=2 29..25=0x0C 14=0 13..12=1 6..2=0x0C 1..0=3
vfsgnj.ah rd rs1 rs2 31..30=2 29..25=0x0D 14=0 13..12=1 6..2=0x0C 1..0=3
vfsgnj.r.ah rd rs1 rs2 31..30=2 29..25=0x0D 14=1 13..12=1 6..2=0x0C 1..0=3
vfsgnjn.ah rd rs1 rs2 31..30=2 29..25=0x0E 14=0 13..12=1 6..2=0x0C 1..0=3
vfsgnjn.r.ah rd rs1 rs2 31..30=2 29..25=0x0E 14=1 13..12=1 6..2=0x0C 1..0=3
vfsgnjx.ah rd rs1 rs2 31..30=2 29..25=0x0F 14=0 13..12=1 6..2=0x0C 1..0=3
vfsgnjx.r.ah rd rs1 rs2 31..30=2 29..25=0x0F 14=1 13..12=1 6..2=0x0C 1..0=3
vfeq.ah rd rs1 rs2 31..30=2 29..25=0x10 14=0 13..12=1 6..2=0x0C 1..0=3
vfeq.r.ah rd rs1 rs2 31..30=2 29..25=0x10 14=1 13..12=1 6..2=0x0C 1..0=3
vfne.ah rd rs1 rs2 31..30=2 29..25=0x11 14=0 13..12=1 6..2=0x0C 1..0=3
vfne.r.ah rd rs1 rs2 31..30=2 29..25=0x11 14=1 13..12=1 6..2=0x0C 1..0=3
vflt.ah rd rs1 rs2 31..30=2 29..25=0x12 14=0 13..12=1 6..2=0x0C 1..0=3
vflt.r.ah rd rs1 rs2 31..30=2 29..25=0x12 14=1 13..12=1 6..2=0x0C 1..0=3
vfge.ah rd rs1 rs2 31..30=2 29..25=0x13 14=0 13..12=1 6..2=0x0C 1..0=3
vfge.r.ah rd rs1 rs2 31..30=2 29..25=0x13 14=1 13..12=1 6..2=0x0C 1..0=3
vfle.ah rd rs1 rs2 31..30=2 29..25=0x14 14=0 13..12=1 6..2=0x0C 1..0=3
vfle.r.ah rd rs1 rs2 31..30=2 29..25=0x14 14=1 13..12=1 6..2=0x0C 1..0=3
vfgt.ah rd rs1 rs2 31..30=2 29..25=0x15 14=0 13..12=1 6..2=0x0C 1..0=3
vfgt.r.ah rd rs1 rs2 31..30=2 29..25=0x15 14=1 13..12=1 6..2=0x0C 1..0=3
# XfvecalthalfnothirtytwoD: only unless RV32D
vfmv.x.ah rd rs1 24..20=0 31..30=2 29..25=0x0C 14=0 13..12=1 6..2=0x0C 1..0=3
vfmv.ah.x rd rs1 24..20=0 31..30=2 29..25=0x0C 14=1 13..12=1 6..2=0x0C 1..0=3
vfcvt.x.ah rd rs1 24..20=2 31..30=2 29..25=0x0C 14=0 13..12=1 6..2=0x0C 1..0=3
vfcvt.xu.ah rd rs1 24..20=2 31..30=2 29..25=0x0C 14=1 13..12=1 6..2=0x0C 1..0=3
vfcvt.ah.x rd rs1 24..20=3 31..30=2 29..25=0x0C 14=0 13..12=1 6..2=0x0C 1..0=3
vfcvt.ah.xu rd rs1 24..20=3 31..30=2 29..25=0x0C 14=1 13..12=1 6..2=0x0C 1..0=3
# XfvecalthalfwithF - vectorial alternate half-precision conversions with F extension, a-d legality depends on FLEN
vfcpka.ah.s rd rs1 rs2 31..30=2 29..25=0x18 14=0 13..12=1 6..2=0x0C 1..0=3
vfcpkb.ah.s rd rs1 rs2 31..30=2 29..25=0x18 14=1 13..12=1 6..2=0x0C 1..0=3
vfcpkc.ah.s rd rs1 rs2 31..30=2 29..25=0x19 14=0 13..12=1 6..2=0x0C 1..0=3
vfcpkd.ah.s rd rs1 rs2 31..30=2 29..25=0x19 14=1 13..12=1 6..2=0x0C 1..0=3
# XfvecalthalfwithD - vectorial alternate half-precision conversions with D extension, a-d legality depends on FLEN (in addition to the above)
vfcpka.ah.d rd rs1 rs2 31..30=2 29..25=0x1A 14=0 13..12=1 6..2=0x0C 1..0=3
vfcpkb.ah.d rd rs1 rs2 31..30=2 29..25=0x1A 14=1 13..12=1 6..2=0x0C 1..0=3
vfcpkc.ah.d rd rs1 rs2 31..30=2 29..25=0x1B 14=0 13..12=1 6..2=0x0C 1..0=3
vfcpkd.ah.d rd rs1 rs2 31..30=2 29..25=0x1B 14=1 13..12=1 6..2=0x0C 1..0=3
# Xfvecalthalfwithsingle - vectorial alternate half-precision conversions with Xfvecsingle extension
vfcvt.s.ah rd rs1 24..20=5 31..30=2 29..25=0x0C 14=0 13..12=0 6..2=0x0C 1..0=3
vfcvtu.s.ah rd rs1 24..20=5 31..30=2 29..25=0x0C 14=1 13..12=0 6..2=0x0C 1..0=3
vfcvt.ah.s rd rs1 24..20=4 31..30=2 29..25=0x0C 14=0 13..12=1 6..2=0x0C 1..0=3
vfcvtu.ah.s rd rs1 24..20=4 31..30=2 29..25=0x0C 14=1 13..12=1 6..2=0x0C 1..0=3
# Xfvecalthalfwithhalf - vectorial alternate half-precision conversions with Xfvechalf extension
vfcvt.h.ah rd rs1 24..20=5 31..30=2 29..25=0x0C 14=0 13..12=2 6..2=0x0C 1..0=3
vfcvtu.h.ah rd rs1 24..20=5 31..30=2 29..25=0x0C 14=1 13..12=2 6..2=0x0C 1..0=3
vfcvt.ah.h rd rs1 24..20=6 31..30=2 29..25=0x0C 14=0 13..12=1 6..2=0x0C 1..0=3
vfcvtu.ah.h rd rs1 24..20=6 31..30=2 29..25=0x0C 14=1 13..12=1 6..2=0x0C 1..0=3
# Xfvecquarter - vectorial quarter-precision floats - requires FLEN >= 16
vfadd.b rd rs1 rs2 31..30=2 29..25=0x01 14=0 13..12=3 6..2=0x0C 1..0=3
vfadd.r.b rd rs1 rs2 31..30=2 29..25=0x01 14=1 13..12=3 6..2=0x0C 1..0=3
vfsub.b rd rs1 rs2 31..30=2 29..25=0x02 14=0 13..12=3 6..2=0x0C 1..0=3
vfsub.r.b rd rs1 rs2 31..30=2 29..25=0x02 14=1 13..12=3 6..2=0x0C 1..0=3
vfmul.b rd rs1 rs2 31..30=2 29..25=0x03 14=0 13..12=3 6..2=0x0C 1..0=3
vfmul.r.b rd rs1 rs2 31..30=2 29..25=0x03 14=1 13..12=3 6..2=0x0C 1..0=3
vfdiv.b rd rs1 rs2 31..30=2 29..25=0x04 14=0 13..12=3 6..2=0x0C 1..0=3
vfdiv.r.b rd rs1 rs2 31..30=2 29..25=0x04 14=1 13..12=3 6..2=0x0C 1..0=3
vfmin.b rd rs1 rs2 31..30=2 29..25=0x05 14=0 13..12=3 6..2=0x0C 1..0=3
vfmin.r.b rd rs1 rs2 31..30=2 29..25=0x05 14=1 13..12=3 6..2=0x0C 1..0=3
vfmax.b rd rs1 rs2 31..30=2 29..25=0x06 14=0 13..12=3 6..2=0x0C 1..0=3
vfmax.r.b rd rs1 rs2 31..30=2 29..25=0x06 14=1 13..12=3 6..2=0x0C 1..0=3
vfsqrt.b rd rs1 24..20=0 31..30=2 29..25=0x07 14=0 13..12=3 6..2=0x0C 1..0=3
vfmac.b rd rs1 rs2 31..30=2 29..25=0x08 14=0 13..12=3 6..2=0x0C 1..0=3
vfmac.r.b rd rs1 rs2 31..30=2 29..25=0x08 14=1 13..12=3 6..2=0x0C 1..0=3
vfmre.b rd rs1 rs2 31..30=2 29..25=0x09 14=0 13..12=3 6..2=0x0C 1..0=3
vfmre.r.b rd rs1 rs2 31..30=2 29..25=0x09 14=1 13..12=3 6..2=0x0C 1..0=3
vfsgnj.b rd rs1 rs2 31..30=2 29..25=0x0D 14=0 13..12=3 6..2=0x0C 1..0=3
vfsgnj.r.b rd rs1 rs2 31..30=2 29..25=0x0D 14=1 13..12=3 6..2=0x0C 1..0=3
vfsgnjn.b rd rs1 rs2 31..30=2 29..25=0x0E 14=0 13..12=3 6..2=0x0C 1..0=3
vfsgnjn.r.b rd rs1 rs2 31..30=2 29..25=0x0E 14=1 13..12=3 6..2=0x0C 1..0=3
vfsgnjx.b rd rs1 rs2 31..30=2 29..25=0x0F 14=0 13..12=3 6..2=0x0C 1..0=3
vfsgnjx.r.b rd rs1 rs2 31..30=2 29..25=0x0F 14=1 13..12=3 6..2=0x0C 1..0=3
vfeq.b rd rs1 rs2 31..30=2 29..25=0x10 14=0 13..12=3 6..2=0x0C 1..0=3
vfeq.r.b rd rs1 rs2 31..30=2 29..25=0x10 14=1 13..12=3 6..2=0x0C 1..0=3
vfne.b rd rs1 rs2 31..30=2 29..25=0x11 14=0 13..12=3 6..2=0x0C 1..0=3
vfne.r.b rd rs1 rs2 31..30=2 29..25=0x11 14=1 13..12=3 6..2=0x0C 1..0=3
vflt.b rd rs1 rs2 31..30=2 29..25=0x12 14=0 13..12=3 6..2=0x0C 1..0=3
vflt.r.b rd rs1 rs2 31..30=2 29..25=0x12 14=1 13..12=3 6..2=0x0C 1..0=3
vfge.b rd rs1 rs2 31..30=2 29..25=0x13 14=0 13..12=3 6..2=0x0C 1..0=3
vfge.r.b rd rs1 rs2 31..30=2 29..25=0x13 14=1 13..12=3 6..2=0x0C 1..0=3
vfle.b rd rs1 rs2 31..30=2 29..25=0x14 14=0 13..12=3 6..2=0x0C 1..0=3
vfle.r.b rd rs1 rs2 31..30=2 29..25=0x14 14=1 13..12=3 6..2=0x0C 1..0=3
vfgt.b rd rs1 rs2 31..30=2 29..25=0x15 14=0 13..12=3 6..2=0x0C 1..0=3
vfgt.r.b rd rs1 rs2 31..30=2 29..25=0x15 14=1 13..12=3 6..2=0x0C 1..0=3
# XfvecquarternothirtytwoD: only unless RV32D
vfmv.x.b rd rs1 24..20=0 31..30=2 29..25=0x0C 14=0 13..12=3 6..2=0x0C 1..0=3
vfmv.b.x rd rs1 24..20=0 31..30=2 29..25=0x0C 14=1 13..12=3 6..2=0x0C 1..0=3
vfclass.b rd rs1 24..20=1 31..30=2 29..25=0x0C 14=0 13..12=3 6..2=0x0C 1..0=3
vfcvt.x.b rd rs1 24..20=2 31..30=2 29..25=0x0C 14=0 13..12=3 6..2=0x0C 1..0=3
vfcvt.xu.b rd rs1 24..20=2 31..30=2 29..25=0x0C 14=1 13..12=3 6..2=0x0C 1..0=3
vfcvt.b.x rd rs1 24..20=3 31..30=2 29..25=0x0C 14=0 13..12=3 6..2=0x0C 1..0=3
vfcvt.b.xu rd rs1 24..20=3 31..30=2 29..25=0x0C 14=1 13..12=3 6..2=0x0C 1..0=3
# XfvecquarterwithF - vectorial quarter-precision conversions with F extension, a-d legality depends on FLEN
vfcpka.b.s rd rs1 rs2 31..30=2 29..25=0x18 14=0 13..12=3 6..2=0x0C 1..0=3
vfcpkb.b.s rd rs1 rs2 31..30=2 29..25=0x18 14=1 13..12=3 6..2=0x0C 1..0=3
vfcpkc.b.s rd rs1 rs2 31..30=2 29..25=0x19 14=0 13..12=3 6..2=0x0C 1..0=3
vfcpkd.b.s rd rs1 rs2 31..30=2 29..25=0x19 14=1 13..12=3 6..2=0x0C 1..0=3
# XfvecquarterwithD - vectorial quarter-precision conversions with D extension, a-d legality depends on FLEN (in addition to above)
vfcpka.b.d rd rs1 rs2 31..30=2 29..25=0x1A 14=0 13..12=3 6..2=0x0C 1..0=3
vfcpkb.b.d rd rs1 rs2 31..30=2 29..25=0x1A 14=1 13..12=3 6..2=0x0C 1..0=3
vfcpkc.b.d rd rs1 rs2 31..30=2 29..25=0x1B 14=0 13..12=3 6..2=0x0C 1..0=3
vfcpkd.b.d rd rs1 rs2 31..30=2 29..25=0x1B 14=1 13..12=3 6..2=0x0C 1..0=3
# Xfvecquarterwithsingle - vectorial quarter-precision conversions with Xfvecsingle extension
vfcvt.s.b rd rs1 24..20=7 31..30=2 29..25=0x0C 14=0 13..12=0 6..2=0x0C 1..0=3
vfcvtu.s.b rd rs1 24..20=7 31..30=2 29..25=0x0C 14=1 13..12=0 6..2=0x0C 1..0=3
vfcvt.b.s rd rs1 24..20=4 31..30=2 29..25=0x0C 14=0 13..12=3 6..2=0x0C 1..0=3
vfcvtu.b.s rd rs1 24..20=4 31..30=2 29..25=0x0C 14=1 13..12=3 6..2=0x0C 1..0=3
# Xfvecquarterwithhalf - vectorial quarter-precision conversions with Xfvechalf extension
vfcvt.h.b rd rs1 24..20=7 31..30=2 29..25=0x0C 14=0 13..12=2 6..2=0x0C 1..0=3
vfcvtu.h.b rd rs1 24..20=7 31..30=2 29..25=0x0C 14=1 13..12=2 6..2=0x0C 1..0=3
vfcvt.b.h rd rs1 24..20=6 31..30=2 29..25=0x0C 14=0 13..12=3 6..2=0x0C 1..0=3
vfcvtu.b.h rd rs1 24..20=6 31..30=2 29..25=0x0C 14=1 13..12=3 6..2=0x0C 1..0=3
# Xfvecquarterwithalthalf - vectorial quarter-precision conversions with Xfvecalthalf extension
vfcvt.ah.b rd rs1 24..20=7 31..30=2 29..25=0x0C 14=0 13..12=1 6..2=0x0C 1..0=3
vfcvtu.ah.b rd rs1 24..20=7 31..30=2 29..25=0x0C 14=1 13..12=1 6..2=0x0C 1..0=3
vfcvt.b.ah rd rs1 24..20=5 31..30=2 29..25=0x0C 14=0 13..12=3 6..2=0x0C 1..0=3
vfcvtu.b.ah rd rs1 24..20=5 31..30=2 29..25=0x0C 14=1 13..12=3 6..2=0x0C 1..0=3
#SMALLFLOAT AUXILIARY
# collected under Xfaux - naming not final
# Xfauxsingle - single-precision auxiliary operations - requires F extension
# no instructions currently
# Xfauxvecsingle - vectorial single-precision auxiliary operations - requires Xfvecsingle extension
vfdotp.s rd rs1 rs2 31..30=2 29..25=0x0A 14=0 13..12=0 6..2=0x0C 1..0=3
vfdotp.r.s rd rs1 rs2 31..30=2 29..25=0x0A 14=1 13..12=0 6..2=0x0C 1..0=3
vfavg.s rd rs1 rs2 31..30=2 29..25=0x16 14=0 13..12=0 6..2=0x0C 1..0=3
vfavg.r.s rd rs1 rs2 31..30=2 29..25=0x16 14=1 13..12=0 6..2=0x0C 1..0=3
# Xfauxhalf - half-precision auxiliary operations - requires Xfhalf extension
fmulex.s.h rd rs1 rs2 31..27=0x09 rm 26..25=2 6..2=0x14 1..0=3
fmacex.s.h rd rs1 rs2 31..27=0x0A rm 26..25=2 6..2=0x14 1..0=3
# Xfauxvechalf - vectorial half-precision auxiliary operations - requires Xfvechalf extension
vfdotp.h rd rs1 rs2 31..30=2 29..25=0x0A 14=0 13..12=2 6..2=0x0C 1..0=3
vfdotp.r.h rd rs1 rs2 31..30=2 29..25=0x0A 14=1 13..12=2 6..2=0x0C 1..0=3
vfdotpex.s.h rd rs1 rs2 31..30=2 29..25=0x0B 14=0 13..12=2 6..2=0x0C 1..0=3
vfdotpex.s.r.h rd rs1 rs2 31..30=2 29..25=0x0B 14=1 13..12=2 6..2=0x0C 1..0=3
vfavg.h rd rs1 rs2 31..30=2 29..25=0x16 14=0 13..12=2 6..2=0x0C 1..0=3
vfavg.r.h rd rs1 rs2 31..30=2 29..25=0x16 14=1 13..12=2 6..2=0x0C 1..0=3
# Xfauxalthalf - alternate half-precision auxiliary operations - requires Xfalthalf extension
fmulex.s.ah rd rs1 rs2 31..27=0x09 14..12=5 26..25=2 6..2=0x14 1..0=3
fmacex.s.ah rd rs1 rs2 31..27=0x0A 14..12=5 26..25=2 6..2=0x14 1..0=3
# Xfauxvecalthalf - vectorial alternate half-precision auxiliary operations - requires Xfvecalthalf extension
vfdotp.ah rd rs1 rs2 31..30=2 29..25=0x0A 14=0 13..12=1 6..2=0x0C 1..0=3
vfdotp.r.ah rd rs1 rs2 31..30=2 29..25=0x0A 14=1 13..12=1 6..2=0x0C 1..0=3
vfdotpex.s.ah rd rs1 rs2 31..30=2 29..25=0x0B 14=0 13..12=1 6..2=0x0C 1..0=3
vfdotpex.s.r.ah rd rs1 rs2 31..30=2 29..25=0x0B 14=1 13..12=1 6..2=0x0C 1..0=3
vfavg.ah rd rs1 rs2 31..30=2 29..25=0x16 14=0 13..12=1 6..2=0x0C 1..0=3
vfavg.r.ah rd rs1 rs2 31..30=2 29..25=0x16 14=1 13..12=1 6..2=0x0C 1..0=3
# Xfauxquarter - quarter-precision auxiliary operations - requires Xfquarter extension
fmulex.s.b rd rs1 rs2 31..27=0x09 rm 26..25=3 6..2=0x14 1..0=3
fmacex.s.b rd rs1 rs2 31..27=0x0A rm 26..25=3 6..2=0x14 1..0=3
# Xfauxvecquarter - vectorial quarter-precision auxiliary operations - requires Xfvecquarter extension
vfdotp.b rd rs1 rs2 31..30=2 29..25=0x0A 14=0 13..12=3 6..2=0x0C 1..0=3
vfdotp.r.b rd rs1 rs2 31..30=2 29..25=0x0A 14=1 13..12=3 6..2=0x0C 1..0=3
vfdotpex.s.b rd rs1 rs2 31..30=2 29..25=0x0B 14=0 13..12=3 6..2=0x0C 1..0=3
vfdotpex.s.r.b rd rs1 rs2 31..30=2 29..25=0x0B 14=1 13..12=3 6..2=0x0C 1..0=3
vfavg.b rd rs1 rs2 31..30=2 29..25=0x16 14=0 13..12=3 6..2=0x0C 1..0=3
vfavg.r.b rd rs1 rs2 31..30=2 29..25=0x16 14=1 13..12=3 6..2=0x0C 1..0=3