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 */
45