linux/arch/sparc/lib/memmove.S

/* memmove.S: Simple memmove implementation.
 *
 * Copyright (C) 1997, 2004 David S. Miller (davem@redhat.com)
 * Copyright (C) 1996, 1997, 1998, 1999 Jakub Jelinek (jj@ultra.linux.cz)
 */

#include <linux/linkage.h>

	.text
ENTRY(memmove) /* o0=dst o1=src o2=len */
	mov		%o0, %g1
	cmp		%o0, %o1
	bleu,pt		%xcc, memcpy
	 add		%o1, %o2, %g7
	cmp		%g7, %o0
	bleu,pt		%xcc, memcpy
	 add		%o0, %o2, %o5
	sub		%g7, 1, %o1

	sub		%o5, 1, %o0
1:	ldub		[%o1], %g7
	subcc		%o2, 1, %o2
	sub		%o1, 1, %o1
	stb		%g7, [%o0]
	bne,pt		%icc, 1b
	 sub		%o0, 1, %o0

	retl
	 mov		%g1, %o0
ENDPROC(memmove)
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip! 2005-04-16 22:20:36 +00:00			`/* memmove.S: Simple memmove implementation.`
			`*`
			`* Copyright (C) 1997, 2004 David S. Miller (davem@redhat.com)`
			`* Copyright (C) 1996, 1997, 1998, 1999 Jakub Jelinek (jj@ultra.linux.cz)`
			`*/`

sparc: Convert some assembler over to linakge.h's ENTRY/ENDPROC Use those, instead of doing it all by hand. Signed-off-by: David S. Miller <davem@davemloft.net> 2012-05-12 03:33:22 +00:00			`#include <linux/linkage.h>`

Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip! 2005-04-16 22:20:36 +00:00			`.text`
sparc: Convert some assembler over to linakge.h's ENTRY/ENDPROC Use those, instead of doing it all by hand. Signed-off-by: David S. Miller <davem@davemloft.net> 2012-05-12 03:33:22 +00:00			`ENTRY(memmove) /* o0=dst o1=src o2=len */`
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip! 2005-04-16 22:20:36 +00:00			`mov %o0, %g1`
			`cmp %o0, %o1`
			`bleu,pt %xcc, memcpy`
			`add %o1, %o2, %g7`
			`cmp %g7, %o0`
			`bleu,pt %xcc, memcpy`
			`add %o0, %o2, %o5`
			`sub %g7, 1, %o1`

			`sub %o5, 1, %o0`
			`1: ldub [%o1], %g7`
			`subcc %o2, 1, %o2`
			`sub %o1, 1, %o1`
			`stb %g7, [%o0]`
			`bne,pt %icc, 1b`
			`sub %o0, 1, %o0`

			`retl`
			`mov %g1, %o0`
sparc: Convert some assembler over to linakge.h's ENTRY/ENDPROC Use those, instead of doing it all by hand. Signed-off-by: David S. Miller <davem@davemloft.net> 2012-05-12 03:33:22 +00:00			`ENDPROC(memmove)`