1 /* SPDX-License-Identifier: GPL-2.0 */ <<
2 /* Sparc optimized memcmp code. 1 /* Sparc optimized memcmp code.
3 * 2 *
4 * Copyright (C) 1997 Jakub Jelinek (jj@sunsit 3 * Copyright (C) 1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
5 * Copyright (C) 2000, 2008 David S. Miller (d 4 * Copyright (C) 2000, 2008 David S. Miller (davem@davemloft.net)
6 */ 5 */
7 6
8 #include <linux/export.h> <<
9 #include <linux/linkage.h> 7 #include <linux/linkage.h>
10 #include <asm/asm.h> 8 #include <asm/asm.h>
11 9
12 .text 10 .text
13 ENTRY(memcmp) 11 ENTRY(memcmp)
14 cmp %o2, 0 12 cmp %o2, 0
15 1: BRANCH32(be, pn, 2f) 13 1: BRANCH32(be, pn, 2f)
16 nop 14 nop
17 ldub [%o0], %g7 15 ldub [%o0], %g7
18 ldub [%o1], %g3 16 ldub [%o1], %g3
19 sub %o2, 1, %o2 17 sub %o2, 1, %o2
20 add %o0, 1, %o0 18 add %o0, 1, %o0
21 add %o1, 1, %o1 19 add %o1, 1, %o1
22 subcc %g7, %g3, %g3 20 subcc %g7, %g3, %g3
23 BRANCH32(be, pt, 1b) 21 BRANCH32(be, pt, 1b)
24 cmp %o2, 0 22 cmp %o2, 0
25 retl 23 retl
26 mov %g3, %o0 24 mov %g3, %o0
27 2: retl 25 2: retl
28 mov 0, %o0 26 mov 0, %o0
29 ENDPROC(memcmp) 27 ENDPROC(memcmp)
30 EXPORT_SYMBOL(memcmp) <<
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