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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
527dcdcc DH |
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 | ||
92b59929 HD |
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" \ | |
527dcdcc | 41 | : /* no outputs */ \ |
92b59929 | 42 | : "r" (val), "i" (cr) : "memory"); } |
527dcdcc DH |
43 | |
44 | #endif /* __PARISC_SPECIAL_INSNS_H */ |