tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/* $Id: memcmp.S,v 1.3 2000/03/23 07:51:08 davem Exp $
2 * Sparc64 optimized memcmp code.
3 *
4 * Copyright (C) 1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
5 * Copyright (C) 2000 David S. Miller (davem@redhat.com)
6 */
7
8 .text
9 .align 32
10 .globl __memcmp, memcmp
11__memcmp:
12memcmp:
13 cmp %o2, 0 ! IEU1 Group
14loop: be,pn %icc, ret_0 ! CTI
15 nop ! IEU0
16 ldub [%o0], %g7 ! LSU Group
17 ldub [%o1], %g3 ! LSU Group
18 sub %o2, 1, %o2 ! IEU0
19 add %o0, 1, %o0 ! IEU1
20 add %o1, 1, %o1 ! IEU0 Group
21 subcc %g7, %g3, %g3 ! IEU1 Group
22 be,pt %icc, loop ! CTI
23 cmp %o2, 0 ! IEU1 Group
24
25ret_n0: retl
26 mov %g3, %o0
27ret_0: retl
28 mov 0, %o0