1 /* SPDX-License-Identifier: GPL-2.0 */ 1 /* SPDX-License-Identifier: GPL-2.0 */
2 /* 2 /*
3 * Sparc64 optimized strncmp code. 3 * Sparc64 optimized strncmp code.
4 * 4 *
5 * Copyright (C) 1997 Jakub Jelinek (jj@sunsit 5 * Copyright (C) 1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
6 */ 6 */
7 7
8 #include <linux/export.h> 8 #include <linux/export.h>
9 #include <linux/linkage.h> 9 #include <linux/linkage.h>
10 #include <asm/asi.h> 10 #include <asm/asi.h>
11 11
12 .text 12 .text
13 ENTRY(strncmp) 13 ENTRY(strncmp)
14 brlez,pn %o2, 3f 14 brlez,pn %o2, 3f
15 lduba [%o0] (ASI_PNF), %o3 15 lduba [%o0] (ASI_PNF), %o3
16 1: 16 1:
17 add %o0, 1, %o0 17 add %o0, 1, %o0
18 ldub [%o1], %o4 18 ldub [%o1], %o4
19 brz,pn %o3, 2f 19 brz,pn %o3, 2f
20 add %o1, 1, %o1 20 add %o1, 1, %o1
21 cmp %o3, %o4 21 cmp %o3, %o4
22 bne,pn %icc, 2f 22 bne,pn %icc, 2f
23 subcc %o2, 1, %o2 23 subcc %o2, 1, %o2
24 bne,a,pt %xcc, 1b 24 bne,a,pt %xcc, 1b
25 ldub [%o0], %o3 25 ldub [%o0], %o3
26 2: 26 2:
27 retl 27 retl
28 sub %o3, %o4, %o0 28 sub %o3, %o4, %o0
29 3: 29 3:
30 retl 30 retl
31 clr %o0 31 clr %o0
32 ENDPROC(strncmp) 32 ENDPROC(strncmp)
33 EXPORT_SYMBOL(strncmp) 33 EXPORT_SYMBOL(strncmp)
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