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/arch/sparc/lib/NG2copy_from_user.S

https://bitbucket.org/ndreys/linux-sunxi
Assembly | 35 lines | 29 code | 6 blank | 0 comment | 0 complexity | f7c0eb773e4ad4d763f161fb9e508dfe MD5 | raw file
Possible License(s): GPL-2.0, LGPL-2.0, AGPL-1.0
 1/* NG2copy_from_user.S: Niagara-2 optimized copy from userspace.
 2 *
 3 * Copyright (C) 2007 David S. Miller (davem@davemloft.net)
 4 */
 5
 6#define EX_LD(x)		\
 798:	x;			\
 8	.section __ex_table,"a";\
 9	.align 4;		\
10	.word 98b, __retl_one_asi;\
11	.text;			\
12	.align 4;
13
14#ifndef ASI_AIUS
15#define ASI_AIUS	0x11
16#endif
17
18#ifndef ASI_BLK_AIUS_4V
19#define ASI_BLK_AIUS_4V	0x17
20#endif
21
22#define FUNC_NAME		NG2copy_from_user
23#define LOAD(type,addr,dest)	type##a [addr] %asi, dest
24#define LOAD_BLK(addr,dest)	ldda [addr] ASI_BLK_AIUS_4V, dest
25#define EX_RETVAL(x)		0
26
27#ifdef __KERNEL__
28#define PREAMBLE					\
29	rd		%asi, %g1;			\
30	cmp		%g1, ASI_AIUS;			\
31	bne,pn		%icc, ___copy_in_user;		\
32	 nop
33#endif
34
35#include "NG2memcpy.S"