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/arch/sparc/lib/memcmp.S

https://bitbucket.org/ndreys/linux-sunxi
Assembly | 27 lines | 25 code | 2 blank | 0 comment | 0 complexity | a0c298075ed3ed635727a417a7de7d3d MD5 | raw file
Possible License(s): GPL-2.0, LGPL-2.0, AGPL-1.0
 1/* Sparc optimized memcmp code.
 2 *
 3 * Copyright (C) 1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
 4 * Copyright (C) 2000, 2008 David S. Miller (davem@davemloft.net)
 5 */
 6
 7#include <linux/linkage.h>
 8#include <asm/asm.h>
 9
10	.text
11ENTRY(memcmp)
12	cmp	%o2, 0
131:	BRANCH32(be, pn, 2f)
14	 nop
15	ldub	[%o0], %g7
16	ldub	[%o1], %g3
17	sub	%o2, 1, %o2
18	add	%o0, 1, %o0
19	add	%o1, 1, %o1
20	subcc	%g7, %g3, %g3
21	BRANCH32(be, pt, 1b)
22	 cmp	%o2, 0
23	retl
24	 mov	%g3, %o0
252:	retl
26	 mov	0, %o0
27ENDPROC(memcmp)