1/* SPDX-License-Identifier: GPL-2.0 */
 2/* NG2copy_to_user.S: Niagara-2 optimized copy to userspace.
 3 *
 4 * Copyright (C) 2007 David S. Miller (davem@davemloft.net)
 5 */
 6
 7#define EX_ST(x,y)		\
 898:	x;			\
 9	.section __ex_table,"a";\
10	.align 4;		\
11	.word 98b, y;		\
12	.text;			\
13	.align 4;
14
15#define EX_ST_FP(x,y)		\
1698:	x;			\
17	.section __ex_table,"a";\
18	.align 4;		\
19	.word 98b, y##_fp;	\
20	.text;			\
21	.align 4;
22
23#ifndef ASI_AIUS
24#define ASI_AIUS	0x11
25#endif
26
27#ifndef ASI_BLK_AIUS_4V
28#define ASI_BLK_AIUS_4V	0x17
29#endif
30
31#ifndef ASI_BLK_INIT_QUAD_LDD_AIUS
32#define ASI_BLK_INIT_QUAD_LDD_AIUS 0x23
33#endif
34
35#define FUNC_NAME		NG2copy_to_user
36#define STORE(type,src,addr)	type##a src, [addr] ASI_AIUS
37#define STORE_ASI		ASI_BLK_INIT_QUAD_LDD_AIUS
38#define STORE_BLK(src,addr)	stda src, [addr] ASI_BLK_AIUS_4V
39#define EX_RETVAL(x)		0
40
41#ifdef __KERNEL__
42	/* Writing to %asi is _expensive_ so we hardcode it.
43	 * Reading %asi to check for KERNEL_DS is comparatively
44	 * cheap.
45	 */
46#define PREAMBLE					\
47	rd		%asi, %g1;			\
48	cmp		%g1, ASI_AIUS;			\
49	bne,pn		%icc, raw_copy_in_user;		\
50	 nop
51#endif
52
53#include "NG2memcpy.S"

 
 1/* NG2copy_to_user.S: Niagara-2 optimized copy to userspace.
 2 *
 3 * Copyright (C) 2007 David S. Miller (davem@davemloft.net)
 4 */
 5
 6#define EX_ST(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#ifndef ASI_BLK_INIT_QUAD_LDD_AIUS
23#define ASI_BLK_INIT_QUAD_LDD_AIUS 0x23
24#endif
25
26#define FUNC_NAME		NG2copy_to_user
27#define STORE(type,src,addr)	type##a src, [addr] ASI_AIUS
28#define STORE_ASI		ASI_BLK_INIT_QUAD_LDD_AIUS
29#define STORE_BLK(src,addr)	stda src, [addr] ASI_BLK_AIUS_4V
30#define EX_RETVAL(x)		0
31
32#ifdef __KERNEL__
33	/* Writing to %asi is _expensive_ so we hardcode it.
34	 * Reading %asi to check for KERNEL_DS is comparatively
35	 * cheap.
36	 */
37#define PREAMBLE					\
38	rd		%asi, %g1;			\
39	cmp		%g1, ASI_AIUS;			\
40	bne,pn		%icc, ___copy_in_user;		\
41	 nop
42#endif
43
44#include "NG2memcpy.S"