1 /* SPDX-License-Identifier: GPL-2.0 */
2 /* NG2copy_to_user.S: Niagara-2 optimized copy
3 *
4 * Copyright (C) 2007 David S. Miller (davem@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 #define EX_ST_FP(x,y) \
16 98: 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 #ifndef ASI_BLK_INIT_QUAD_LDD_AIUS
32 #define ASI_BLK_INIT_QUAD_LDD_AIUS 0x23
33 #endif
34
35 #define FUNC_NAME NG2copy_to_use
36 #define STORE(type,src,addr) type##a src, [
37 #define STORE_ASI ASI_BLK_INIT_Q
38 #define STORE_BLK(src,addr) stda src, [add
39 #define EX_RETVAL(x) 0
40
41 #ifdef __KERNEL__
42 /* Writing to %asi is _expensive_ so w
43 * Reading %asi to check for KERNEL_DS
44 * cheap.
45 */
46 #define PREAMBLE
47 rd %asi, %g1;
48 cmp %g1, ASI_AIUS;
49 bne,pn %icc, raw_copy_in_user
50 nop
51 #endif
52
53 #include "NG2memcpy.S"
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.