Greg Kroah-Hartman | b244131 | 2017-11-01 15:07:57 +0100 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
Adrian Bunk | b00dc83 | 2008-05-19 16:52:27 -0700 | [diff] [blame] | 2 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3 | * Sparc64 optimized strncmp code. |
| 4 | * |
| 5 | * Copyright (C) 1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz) |
| 6 | */ |
| 7 | |
David S. Miller | 8695c37 | 2012-05-11 20:33:22 -0700 | [diff] [blame] | 8 | #include <linux/linkage.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 9 | #include <asm/asi.h> |
Al Viro | d3867f04 | 2016-01-16 21:39:30 -0500 | [diff] [blame] | 10 | #include <asm/export.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 11 | |
| 12 | .text |
David S. Miller | 8695c37 | 2012-05-11 20:33:22 -0700 | [diff] [blame] | 13 | ENTRY(strncmp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 14 | brlez,pn %o2, 3f |
| 15 | lduba [%o0] (ASI_PNF), %o3 |
| 16 | 1: |
| 17 | add %o0, 1, %o0 |
| 18 | ldub [%o1], %o4 |
| 19 | brz,pn %o3, 2f |
| 20 | add %o1, 1, %o1 |
| 21 | cmp %o3, %o4 |
| 22 | bne,pn %icc, 2f |
| 23 | subcc %o2, 1, %o2 |
| 24 | bne,a,pt %xcc, 1b |
| 25 | ldub [%o0], %o3 |
| 26 | 2: |
| 27 | retl |
| 28 | sub %o3, %o4, %o0 |
| 29 | 3: |
| 30 | retl |
| 31 | clr %o0 |
David S. Miller | 8695c37 | 2012-05-11 20:33:22 -0700 | [diff] [blame] | 32 | ENDPROC(strncmp) |
Al Viro | d3867f04 | 2016-01-16 21:39:30 -0500 | [diff] [blame] | 33 | EXPORT_SYMBOL(strncmp) |