/* $Id: memcmp.S,v 1.3 2000/03/23 07:51:08 davem Exp $ | |
* Sparc64 optimized memcmp code. | |
* | |
* Copyright (C) 1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz) | |
* Copyright (C) 2000 David S. Miller (davem@redhat.com) | |
*/ | |
.text | |
.align 32 | |
.globl __memcmp, memcmp | |
__memcmp: | |
memcmp: | |
cmp %o2, 0 ! IEU1 Group | |
loop: be,pn %icc, ret_0 ! CTI | |
nop ! IEU0 | |
ldub [%o0], %g7 ! LSU Group | |
ldub [%o1], %g3 ! LSU Group | |
sub %o2, 1, %o2 ! IEU0 | |
add %o0, 1, %o0 ! IEU1 | |
add %o1, 1, %o1 ! IEU0 Group | |
subcc %g7, %g3, %g3 ! IEU1 Group | |
be,pt %icc, loop ! CTI | |
cmp %o2, 0 ! IEU1 Group | |
ret_n0: retl | |
mov %g3, %o0 | |
ret_0: retl | |
mov 0, %o0 |