# Opcode Tables for PO=59/63 XO=1---011-- Power ISA v3.1B opcodes extracted from: * Power ISA v3.1B Appendix D Table 23 sheet 2/3 of 4 page 1391/1392 * Power ISA v3.1B Appendix D Table 25 sheet 2/3 of 4 page 1399/1400 Parenthesized entries are not part of fptrans. * Entries whose mnemonic ends in `s` are only in PO=59. * Entries whose mnemonic does not end in `s` are only in PO=63. * Entries whose mnemonic ends in `(s)` are in both PO=59 and PO=63. | XO LSB half →
XO MSB half ↓ | 01100 | 01101 | 01110 | 01111 | |-----------------------------------------------|------------------------------------------------------|---------------------------------------------------|------------------------------------------------------|----------------------------------------------------| | 10000 | `10000 01100`
fcbrt(s) (draft) | `10000 01101`
fsinpi(s) (draft) | `10000 01110`
fatan2pi(s) (draft) | `10000 01111`
fasinpi(s) (draft) | | 10001 | `10001 01100`
fcospi(s) (draft) | `10001 01101`
ftanpi(s) (draft) | `10001 01110`
facospi(s) (draft) | `10001 01111`
fatanpi(s) (draft) | | 10010 | `10010 01100`
frsqrt(s) (draft) | `10010 01101`
fsin(s) (draft) | `10010 01110`
fatan2(s) (draft) | `10010 01111`
fasin(s) (draft) | | 10011 | `10011 01100`
fcos(s) (draft) | `10011 01101`
ftan(s) (draft) | `10011 01110`
facos(s) (draft) | `10011 01111`
fatan(s) (draft) | | 10100 | `10100 01100`
frecip(s) (draft) | `10100 01101`
fsinh(s) (draft) | `10100 01110`
fhypot(s) (draft) | `10100 01111`
fasinh(s) (draft) | | 10101 | `10101 01100`
fcosh(s) (draft) | `10101 01101`
ftanh(s) (draft) | `10101 01110`
facosh(s) (draft) | `10101 01111`
fatanh(s) (draft) | | 10110 | `10110 01100`
  | `10110 01101`
  | `10110 01110`
  | `10110 01111`
  | | 10111 | `10111 01100`
  | `10111 01101`
  | `10111 01110`
  | `10111 01111`
  | | XO LSB half →
XO MSB half ↓ | 01100 | 01101 | 01110 | 01111 | |-----------------------------------------------|----------------------------------------------------|----------------------------------------------------|---------------------------------------------------------|---------------------------------------------------------| | 11000 | `11000 01100`
fexp2m1(s) (draft) | `11000 01101`
flog2p1(s) (draft) | `11000 01110`
(cffpro) (draft) | `11000 01111`
(ctfpr(s)) (draft) | | 11001 | `11001 01100`
fexpm1(s) (draft) | `11001 01101`
flogp1(s) (draft) | `11001 01110`
(fctid) | `11001 01111`
(fctidz) | | 11010 | `11010 01100`
fexp10m1(s) (draft)| `11010 01101`
flog10p1(s) (draft)| `11010 01110`
(fcfid(s)) | `11010 01111`
fmod(s) (draft) | | 11011 | `11011 01100`
fpown(s) (draft) | `11011 01101`
frootn(s) (draft) | `11011 01110`
  | `11011 01111`
  | | 11100 | `11100 01100`
fexp2(s) (draft) | `11100 01101`
flog2(s) (draft) | `11100 01110`
(mffpr(s)) (draft) | `11100 01111`
(mtfpr(s)) (draft) | | 11101 | `11101 01100`
fexp(s) (draft) | `11101 01101`
flog(s) (draft) | `11101 01110`
(fctidu) | `11101 01111`
(fctiduz) | | 11110 | `11110 01100`
fexp10(s) (draft) | `11110 01101`
flog10(s) (draft) | `11110 01110`
(fcfidu(s)) | `11110 01111`
fremainder(s) (draft) | | 11111 | `11111 01100`
fpowr(s) (draft) | `11111 01101`
fpow(s) (draft) | `11111 01110`
  | `11111 01111`
  | | XO LSB half →
XO MSB half ↓ | 10000 | 10001 | 10010 | 10011 | |-----------------------------------------------|-------------------------------------------------|----------------------------------------|-------------------------------------------|----------------------------------------| | ////0 | `....0 10000`
fminmax (draft) | `////0 10001`
  | `////0 10010`
(fdiv(s)) | `////0 10011`
  | | ////1 | `////1 10000`
  | `////1 10001`
  | `////1 10010`
(fdiv(s)) | `////1 10011`
  | # DRAFT List of 2-arg opcodes These are X-Form, recommended Major Opcode 63 for full-width and 59 for half-width (ending in s). | 0.5|6.10|11.15|16.20| 21..30 |31| name | Form | | -- | -- | --- | --- | ---------- |--| ---- | ------- | | NN |FRT | FRA | FRB | 1xxxx011xx |Rc| transcendental | X-Form | | NN |FRT | FRA | RB | 1xxxx011xx |Rc| transcendental | X-Form | | NN |FRT | FRA | FRB | xxxxx10000 |Rc| transcendental | X-Form | Recommended 10-bit XO assignments: | opcode | Description | Major 59 and 63 | bits 16..20 | |-----------------|-----------------------------------------|-----------------|-------------| | fatan2(s) | atan2 arc tangent | 10010 01110 | FRB | | fatan2pi(s) | atan2 arc tangent / π | 10000 01110 | FRB | | fpow(s) | xy | 11111 01101 | FRB | | fpown(s) | xn (n ∈ ℤ) | 11011 01100 | RB | | fpowr(s) | xy (x >= 0) | 11111 01100 | FRB | | frootn(s) | n√x (n ∈ ℤ) | 11011 01101 | RB | | fhypot(s) | √(x2 + y2) | 10100 01110 | FRB | | fminmax | min/max | ....0 10000 | FRB | | fmod(s) | modulus | 11010 01111 | FRB | | fremainder(s) | IEEE 754 remainder | 11110 01111 | FRB | # DRAFT List of 1-arg transcendental opcodes These are X-Form, and are mostly identical in Special Registers Altered to `fsqrt` (the exact fp exceptions they can produce differ). Recommended Major Opcode 63 for full-width and 59 for half-width (ending in s). Special Registers Altered (FIXME: come up with correct list): FPRF FR FI FX OX UX XX VXSNAN VXIMZ VXZDZ CR1 (if Rc=1) | 0.5|6.10|11.15|16.20| 21..30 |31| name | Form | | -- | -- | --- | --- | ---------- |--| ---- | ------- | | NN |FRT | /// | FRB | 1xxxx011xx |Rc| transcendental | X-Form | Recommended 10-bit XO assignments: | opcode | Description | Major 59 and 63 | |------------|--------------------------|-----------------| | frsqrt(s) | 1 / √x | 10010 01100 | | fcbrt(s) | ∛x | 10000 01100 | | frecip(s) | 1 / x | 10100 01100 | | fexp2m1(s) | 2x - 1 | 11000 01100 | | flog2p1(s) | log2 (x + 1) | 11000 01101 | | fexp2(s) | 2x | 11100 01100 | | flog2(s) | log2 x | 11100 01101 | | fexpm1(s) | ex - 1 | 11001 01100 | | flogp1(s) | loge (x + 1) | 11001 01101 | | fexp(s) | ex | 11101 01100 | | flog(s) | loge x | 11101 01101 | | fexp10m1(s)| 10x - 1 | 11010 01100 | | flog10p1(s)| log10 (x + 1) | 11010 01101 | | fexp10(s) | 10x | 11110 01100 | | flog10(s) | log10 x | 11110 01101 | # DRAFT List of 1-arg trigonometric opcodes These are X-Form, and are mostly identical in Special Registers Altered to `fsqrt` (the exact fp exceptions they can produce differ). Recommended Major Opcode 63 for full-width and 59 for half-width (ending in s) Special Registers Altered: FPRF FR FI FX OX UX XX VXSNAN VXIMZ VXZDZ CR1 (if Rc=1) | 0.5|6.10|11.15|16.20| 21..30 |31| name | Form | | -- | -- | --- | --- | ---------- |--| ---- | ------- | | NN |FRT | /// | FRB | 1xxxx011xx |Rc| trigonometric | X-Form | Recommended 10-bit XO assignments: | opcode | Description | Major 59 and 63 | |-------------|--------------------------|------------------| | fsin(s) | sin (radians) | 10010 01101 | | fcos(s) | cos (radians) | 10011 01100 | | ftan(s) | tan (radians) | 10011 01101 | | fasin(s) | arcsin (radians) | 10010 01111 | | facos(s) | arccos (radians) | 10011 01110 | | fatan(s) | arctan (radians) | 10011 01111 | | fsinpi(s) | sin(π * x) | 10000 01101 | | fcospi(s) | cos(π * x) | 10001 01100 | | ftanpi(s) | tan(π * x) | 10001 01101 | | fasinpi(s) | arcsin(x) / π | 10000 01111 | | facospi(s) | arccos(x) / π | 10001 01110 | | fatanpi(s) | arctan(x) / π | 10001 01111 | | fsinh(s) | hyperbolic sin | 10100 01101 | | fcosh(s) | hyperbolic cos | 10101 01100 | | ftanh(s) | hyperbolic tan | 10101 01101 | | fasinh(s) | inverse hyperbolic sin | 10100 01111 | | facosh(s) | inverse hyperbolic cos | 10101 01110 | | fatanh(s) | inverse hyperbolic tan | 10101 01111 |