1/* SPDX-License-Identifier: GPL-2.0 */
2/* NG2copy_from_user.S: Niagara-2 optimized copy from userspace.
3 *
4 * Copyright (C) 2007 David S. Miller (davem@davemloft.net)
5 */
6
7#define EX_LD(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_LD_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#define FUNC_NAME NG2copy_from_user
32#define LOAD(type,addr,dest) type##a [addr] %asi, dest
33#define LOAD_BLK(addr,dest) ldda [addr] ASI_BLK_AIUS_4V, dest
34#define EX_RETVAL(x) 0
35
36#ifdef __KERNEL__
37#define PREAMBLE \
38 rd %asi, %g1; \
39 cmp %g1, ASI_AIUS; \
40 bne,pn %icc, raw_copy_in_user; \
41 nop
42#endif
43
44#include "NG2memcpy.S"
45

source code of linux/arch/sparc/lib/NG2copy_from_user.S