1/* SPDX-License-Identifier: GPL-2.0 */
2/* NG4copy_from_user.S: Niagara-4 optimized copy from userspace.
3 *
4 * Copyright (C) 2012 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#define FUNC_NAME NG4copy_from_user
28#define LOAD(type,addr,dest) type##a [addr] %asi, dest
29#define EX_RETVAL(x) 0
30
31#ifdef __KERNEL__
32#define PREAMBLE \
33 rd %asi, %g1; \
34 cmp %g1, ASI_AIUS; \
35 bne,pn %icc, raw_copy_in_user; \
36 nop
37#endif
38
39#include "NG4memcpy.S"
40

source code of linux/arch/sparc/lib/NG4copy_from_user.S