GNU Linux-libre 4.19.286-gnu1
[releases.git] / arch / parisc / include / asm / special_insns.h
1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef __PARISC_SPECIAL_INSNS_H
3 #define __PARISC_SPECIAL_INSNS_H
4
5 #define mfctl(reg)      ({              \
6         unsigned long cr;               \
7         __asm__ __volatile__(           \
8                 "mfctl " #reg ",%0" :   \
9                  "=r" (cr)              \
10         );                              \
11         cr;                             \
12 })
13
14 #define mtctl(gr, cr) \
15         __asm__ __volatile__("mtctl %0,%1" \
16                 : /* no outputs */ \
17                 : "r" (gr), "i" (cr) : "memory")
18
19 /* these are here to de-mystefy the calling code, and to provide hooks */
20 /* which I needed for debugging EIEM problems -PB */
21 #define get_eiem() mfctl(15)
22 static inline void set_eiem(unsigned long val)
23 {
24         mtctl(val, 15);
25 }
26
27 #define mfsp(reg)       ({              \
28         unsigned long cr;               \
29         __asm__ __volatile__(           \
30                 "mfsp " #reg ",%0" :    \
31                  "=r" (cr)              \
32         );                              \
33         cr;                             \
34 })
35
36 #define mtsp(val, cr) \
37         { if (__builtin_constant_p(val) && ((val) == 0)) \
38          __asm__ __volatile__("mtsp %%r0,%0" : : "i" (cr) : "memory"); \
39         else \
40          __asm__ __volatile__("mtsp %0,%1" \
41                 : /* no outputs */ \
42                 : "r" (val), "i" (cr) : "memory"); }
43
44 #endif /* __PARISC_SPECIAL_INSNS_H */