summaryrefslogtreecommitdiff
path: root/arch/sparc/lib/NG2copy_from_user.S
blob: b79a6998d87c82eaeb12f5c1c23ab8fcbc8b10de (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
/* NG2copy_from_user.S: Niagara-2 optimized copy from userspace.
 *
 * Copyright (C) 2007 David S. Miller (davem@davemloft.net)
 */

#define EX_LD(x,y)		\
98:	x;			\
	.section __ex_table,"a";\
	.align 4;		\
	.word 98b, y;		\
	.text;			\
	.align 4;

#define EX_LD_FP(x,y)		\
98:	x;			\
	.section __ex_table,"a";\
	.align 4;		\
	.word 98b, y##_fp;	\
	.text;			\
	.align 4;

#ifndef ASI_AIUS
#define ASI_AIUS	0x11
#endif

#ifndef ASI_BLK_AIUS_4V
#define ASI_BLK_AIUS_4V	0x17
#endif

#define FUNC_NAME		NG2copy_from_user
#define LOAD(type,addr,dest)	type##a [addr] %asi, dest
#define LOAD_BLK(addr,dest)	ldda [addr] ASI_BLK_AIUS_4V, dest
#define EX_RETVAL(x)		0

#ifdef __KERNEL__
#define PREAMBLE					\
	rd		%asi, %g1;			\
	cmp		%g1, ASI_AIUS;			\
	bne,pn		%icc, ___copy_in_user;		\
	 nop
#endif

#include "NG2memcpy.S"