1 /*
2 * M7copy_to_user.S: SPARC M7 optimized copy t
3 *
4 * Copyright (c) 2016, Oracle and/or its affil
5 */
6
7
8 #define EX_ST(x, y) \
9 98: x; \
10 .section __ex_table,"a"; \
11 .align 4; \
12 .word 98b, y; \
13 .text; \
14 .align 4;
15
16 #define EX_ST_FP(x, y) \
17 98: x; \
18 .section __ex_table,"a"; \
19 .align 4; \
20 .word 98b, y##_fp; \
21 .text; \
22 .align 4;
23
24
25 #ifndef ASI_AIUS
26 #define ASI_AIUS 0x11
27 #endif
28
29 #ifndef ASI_BLK_INIT_QUAD_LDD_AIUS
30 #define ASI_BLK_INIT_QUAD_LDD_AIUS 0x23
31 #endif
32
33 #define FUNC_NAME M7copy_to_user
34 #define STORE(type,src,addr) type##a src, [
35 #define STORE_ASI ASI_BLK_INIT_Q
36 #define STORE_MRU_ASI ASI_ST_BLKINIT
37 #define EX_RETVAL(x) 0
38
39 #ifdef __KERNEL__
40 /* Writing to %asi is _expensive_ so w
41 * Reading %asi to check for KERNEL_DS
42 * cheap.
43 */
44 #define PREAMBLE
45 rd %asi, %g1;
46 cmp %g1, ASI_AIUS;
47 bne,pn %icc, raw_copy_in_user
48 nop
49 #endif
50
51 #include "M7memcpy.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.