Alpha Instruction Summary

Table A–2 Architecture Instructions (Continued)

Mnemonic

Format

Opcode

Description

 

 

 

 

BSR

Mbr

34

Branch to subroutine

CALL_PAL

Pcd

00

Trap to PALcode

CMOVEQ

Opr

11.24

CMOVE if = zero

CMOVGE

Opr

11.46

CMOVE if zero

CMOVGT

Opr

11.66

CMOVE if > zero

CMOVLBC

Opr

11.16

CMOVE if low bit clear

CMOVLBS

Opr

11.14

CMOVE if low bit set

CMOVLE

Opr

11.64

CMOVE if zero

CMOVLT

Opr

11.44

CMOVE if < zero

CMOVNE

Opr

11.26

CMOVE if zero

CMPBGE

Opr

10.0F

Compare byte

CMPEQ

Opr

10.2D

Compare signed quadword equal

CMPGEQ

F-P

15.0A5

Compare G_floating equal

CMPGLE

F-P

15.0A7

Compare G_floating less than or equal

CMPGLT

F-P

15.0A6

Compare G_floating less than

CMPLE

Opr

10.6D

Compare signed quadword less than or equal

CMPLT

Opr

10.4D

Compare signed quadword less than

CMPTEQ

F-P

16.0A5

Compare T_floating equal

CMPTLE

F-P

16.0A7

Compare T_floating less than or equal

CMPTLT

F-P

16.0A6

Compare T_floating less than

CMPTUN

F-P

16.0A4

Compare T_floating unordered

CMPULE

Opr

10.3D

Compare unsigned quadword less than or equal

CMPULT

Opr

10.1D

Compare unsigned quadword less than

CPYS

F-P

17.020

Copy sign

CPYSE

F-P

17.022

Copy sign and exponent

CPYSN

F-P

17.021

Copy sign negate

CTLZ

Opr

1C.32

Count leading zero

CTPOP

Opr

1C.30

Count population

CTTZ

Opr

1C.33

Count trailing zero

CVTDG

F-P

15.09E

Convert D_floating to G_floating

CVTGD

F-P

15.0AD

Convert G_floating to D_floating

CVTGF

F-P

15.0AC

Convert G_floating to F_floating

Alpha 21264/EV67 Hardware Reference Manual

Alpha Instruction Set A–3

Page 269
Image 269
Compaq 21264, EV67 Mbr Branch to subroutine, Pcd Trap to PALcode, Opr 11.24 Cmove if = zero, Opr 11.46 Cmove if ≥ zero