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697a606c JA |
1 | #ifndef ARCH_SPARC64_H |
2 | #define ARCH_SPARC64_H | |
3 | ||
4 | #define ARCH (arch_sparc64) | |
5 | ||
6 | #ifndef __NR_ioprio_set | |
7 | #define __NR_ioprio_set 196 | |
8 | #define __NR_ioprio_get 218 | |
9 | #endif | |
10 | ||
11 | #ifndef __NR_fadvise64 | |
12 | #define __NR_fadvise64 209 | |
13 | #endif | |
14 | ||
15 | #ifndef __NR_sys_splice | |
16 | #define __NR_sys_splice 232 | |
17 | #define __NR_sys_tee 280 | |
18 | #define __NR_sys_vmsplice 25 | |
19 | #endif | |
20 | ||
21 | #define nop do { } while (0) | |
22 | ||
23 | #define membar_safe(type) \ | |
24 | do { __asm__ __volatile__("ba,pt %%xcc, 1f\n\t" \ | |
25 | " membar " type "\n" \ | |
26 | "1:\n" \ | |
27 | : : : "memory"); \ | |
28 | } while (0) | |
29 | ||
44c47feb JA |
30 | #define read_barrier() membar_safe("#LoadLoad") |
31 | #define write_barrier() membar_safe("#StoreStore") | |
697a606c | 32 | |
69ebbd39 JA |
33 | typedef struct { |
34 | volatile unsigned char lock; | |
35 | } spinlock_t; | |
36 | ||
37 | static inline void spin_lock(spinlock_t *lock) | |
38 | { | |
39 | unsigned long tmp; | |
40 | ||
41 | __asm__ __volatile__( | |
42 | "1: ldstub [%1], %0\n" | |
43 | " membar #StoreLoad | #StoreStore\n" | |
44 | " brnz,pn %0, 2f\n" | |
45 | " nop\n" | |
46 | " .subsection 2\n" | |
47 | "2: ldub [%1], %0\n" | |
48 | " membar #LoadLoad\n" | |
49 | " brnz,pt %0, 2b\n" | |
50 | " nop\n" | |
51 | " ba,a,pt %%xcc, 1b\n" | |
52 | " .previous" | |
53 | : "=&r" (tmp) | |
54 | : "r" (lock) | |
55 | : "memory"); | |
56 | } | |
57 | ||
58 | static inline void spin_unlock(spinlock_t *lock) | |
59 | { | |
60 | __asm__ __volatile__( | |
61 | " membar #StoreStore | #LoadStore\n" | |
62 | " stb %%g0, [%0]" | |
63 | : /* No outputs */ | |
64 | : "r" (lock) | |
65 | : "memory"); | |
66 | } | |
67 | ||
697a606c | 68 | #endif |