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