1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef __PARISC_SPECIAL_INSNS_H
3 #define __PARISC_SPECIAL_INSNS_H
4 
5 #define lpa(va)	({					\
6 	unsigned long pa;				\
7 	__asm__ __volatile__(				\
8 		"copy %%r0,%0\n"			\
9 		"8:\tlpa %%r0(%1),%0\n"			\
10 		"9:\n"					\
11 		ASM_EXCEPTIONTABLE_ENTRY(8b, 9b)	\
12 		: "=&r" (pa)				\
13 		: "r" (va)				\
14 		: "memory"				\
15 	);						\
16 	pa;						\
17 })
18 
19 #define lpa_user(va)	({				\
20 	unsigned long pa;				\
21 	__asm__ __volatile__(				\
22 		"copy %%r0,%0\n"			\
23 		"8:\tlpa %%r0(%%sr3,%1),%0\n"		\
24 		"9:\n"					\
25 		ASM_EXCEPTIONTABLE_ENTRY(8b, 9b)	\
26 		: "=&r" (pa)				\
27 		: "r" (va)				\
28 		: "memory"				\
29 	);						\
30 	pa;						\
31 })
32 
33 #define mfctl(reg)	({		\
34 	unsigned long cr;		\
35 	__asm__ __volatile__(		\
36 		"mfctl " #reg ",%0" :	\
37 		 "=r" (cr)		\
38 	);				\
39 	cr;				\
40 })
41 
42 #define mtctl(gr, cr) \
43 	__asm__ __volatile__("mtctl %0,%1" \
44 		: /* no outputs */ \
45 		: "r" (gr), "i" (cr) : "memory")
46 
47 /* these are here to de-mystefy the calling code, and to provide hooks */
48 /* which I needed for debugging EIEM problems -PB */
49 #define get_eiem() mfctl(15)
50 static inline void set_eiem(unsigned long val)
51 {
52 	mtctl(val, 15);
53 }
54 
55 #define mfsp(reg)	({		\
56 	unsigned long cr;		\
57 	__asm__ __volatile__(		\
58 		"mfsp " #reg ",%0" :	\
59 		 "=r" (cr)		\
60 	);				\
61 	cr;				\
62 })
63 
64 #define mtsp(val, cr) \
65 	{ if (__builtin_constant_p(val) && ((val) == 0)) \
66 	 __asm__ __volatile__("mtsp %%r0,%0" : : "i" (cr) : "memory"); \
67 	else \
68 	 __asm__ __volatile__("mtsp %0,%1" \
69 		: /* no outputs */ \
70 		: "r" (val), "i" (cr) : "memory"); }
71 
72 #endif /* __PARISC_SPECIAL_INSNS_H */
73