1 /* SPDX-License-Identifier: GPL-2.0 */
2 /* NGcopy_to_user.S: Niagara optimized copy to
3 *
4 * Copyright (C) 2006, 2007 David S. Miller (d
5 */
6
7 #define EX_ST(x,y) \
8 98: 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_to_user
20 #define STORE(type,src,addr) type##a src, [
21 #define STORE_ASI ASI_BLK_INIT_Q
22 #define EX_RETVAL(x) %g0
23
24 #ifdef __KERNEL__
25 /* Writing to %asi is _expensive_ so w
26 * Reading %asi to check for KERNEL_DS
27 * cheap.
28 */
29 #define PREAMBLE
30 rd %asi, %g1;
31 cmp %g1, ASI_AIUS;
32 bne,pn %icc, raw_copy_in_user
33 nop
34 #endif
35
36 #include "NGmemcpy.S"
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