linux/arch/blackfin/lib/memchr.S
Robin Getz 96f1050d3d Blackfin: mass clean up of copyright/licensing info
Bill Gatliff & David Brownell pointed out we were missing some
copyrights, and licensing terms in some of the files in
./arch/blackfin, so this fixes things, and cleans them up.

It also removes:
 - verbose GPL text(refer to the top level ./COPYING file)
 - file names (you are looking at the file)
 - bug url (it's in the ./MAINTAINERS file)
 - "or later" on GPL-2, when we did not have that right

It also allows some Blackfin-specific assembly files to be under a BSD
like license (for people to use them outside of Linux).

Signed-off-by: Robin Getz <robin.getz@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2009-10-07 04:36:26 -04:00

48 lines
674 B
ArmAsm

/*
* Copyright 2005-2009 Analog Devices Inc.
*
* Licensed under the ADI BSD license or the GPL-2 (or later)
*/
#include <linux/linkage.h>
/* void *memchr(const void *s, int c, size_t n);
* R0 = address (s)
* R1 = sought byte (c)
* R2 = count (n)
*
* Returns pointer to located character.
*/
.text
.align 2
ENTRY(_memchr)
P0 = R0; /* P0 = address */
P2 = R2; /* P2 = count */
R1 = R1.B(Z);
CC = R2 == 0;
IF CC JUMP .Lfailed;
.Lbytes:
LSETUP (.Lbyte_loop_s, .Lbyte_loop_e) LC0=P2;
.Lbyte_loop_s:
R3 = B[P0++](Z);
CC = R3 == R1;
IF CC JUMP .Lfound;
.Lbyte_loop_e:
NOP;
.Lfailed:
R0=0;
RTS;
.Lfound:
R0 = P0;
R0 += -1;
RTS;
ENDPROC(_memchr)