1 /* SPDX-License-Identifier: GPL-2.0 */ 1 /* SPDX-License-Identifier: GPL-2.0 */
2 /* NG4copy_from_user.S: Niagara-4 optimized co 2 /* NG4copy_from_user.S: Niagara-4 optimized copy from userspace.
3 * 3 *
4 * Copyright (C) 2012 David S. Miller (davem@d 4 * Copyright (C) 2012 David S. Miller (davem@davemloft.net)
5 */ 5 */
6 6
7 #define EX_LD(x, y) \ 7 #define EX_LD(x, y) \
8 98: x; \ 8 98: x; \
9 .section __ex_table,"a";\ 9 .section __ex_table,"a";\
10 .align 4; \ 10 .align 4; \
11 .word 98b, y; \ 11 .word 98b, y; \
12 .text; \ 12 .text; \
13 .align 4; 13 .align 4;
14 14
15 #define EX_LD_FP(x,y) \ 15 #define EX_LD_FP(x,y) \
16 98: x; \ 16 98: x; \
17 .section __ex_table,"a";\ 17 .section __ex_table,"a";\
18 .align 4; \ 18 .align 4; \
19 .word 98b, y##_fp; \ 19 .word 98b, y##_fp; \
20 .text; \ 20 .text; \
21 .align 4; 21 .align 4;
22 22
23 #ifndef ASI_AIUS 23 #ifndef ASI_AIUS
24 #define ASI_AIUS 0x11 24 #define ASI_AIUS 0x11
25 #endif 25 #endif
26 26
27 #define FUNC_NAME NG4copy_from_u 27 #define FUNC_NAME NG4copy_from_user
28 #define LOAD(type,addr,dest) type##a [addr] 28 #define LOAD(type,addr,dest) type##a [addr] %asi, dest
29 #define EX_RETVAL(x) 0 29 #define EX_RETVAL(x) 0
30 30
31 #ifdef __KERNEL__ 31 #ifdef __KERNEL__
32 #define PREAMBLE 32 #define PREAMBLE \
33 rd %asi, %g1; 33 rd %asi, %g1; \
34 cmp %g1, ASI_AIUS; 34 cmp %g1, ASI_AIUS; \
35 bne,pn %icc, raw_copy_in_user 35 bne,pn %icc, raw_copy_in_user; \
36 nop 36 nop
37 #endif 37 #endif
38 38
39 #include "NG4memcpy.S" 39 #include "NG4memcpy.S"
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