1/* SPDX-License-Identifier: GPL-2.0 */
2/* NGcopy_from_user.S: Niagara optimized copy from userspace.
3 *
4 * Copyright (C) 2006, 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#ifndef ASI_AIUS
16#define ASI_AIUS 0x11
17#endif
18
19#define FUNC_NAME NGcopy_from_user
20#define LOAD(type,addr,dest) type##a [addr] ASI_AIUS, dest
21#define LOAD_TWIN(addr_reg,dest0,dest1) \
22 ldda [addr_reg] ASI_BLK_INIT_QUAD_LDD_AIUS, dest0
23#define EX_RETVAL(x) %g0
24
25#ifdef __KERNEL__
26#define PREAMBLE \
27 rd %asi, %g1; \
28 cmp %g1, ASI_AIUS; \
29 bne,pn %icc, raw_copy_in_user; \
30 nop
31#endif
32
33#include "NGmemcpy.S"
34

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