summaryrefslogtreecommitdiff
path: root/arch/parisc/include/asm/special_insns.h
blob: a303ae9a77f41fe8ceef5490ab2be5b394fc199d (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __PARISC_SPECIAL_INSNS_H
#define __PARISC_SPECIAL_INSNS_H

#define lpa(va)	({			\
	unsigned long pa;		\
	__asm__ __volatile__(		\
		"copy %%r0,%0\n\t"	\
		"lpa %%r0(%1),%0"	\
		: "=r" (pa)		\
		: "r" (va)		\
		: "memory"		\
	);				\
	pa;				\
})

#define lpa_user(va)	({		\
	unsigned long pa;		\
	__asm__ __volatile__(		\
		"copy %%r0,%0\n\t"	\
		"lpa %%r0(%%sr3,%1),%0"	\
		: "=r" (pa)		\
		: "r" (va)		\
		: "memory"		\
	);				\
	pa;				\
})

#define mfctl(reg)	({		\
	unsigned long cr;		\
	__asm__ __volatile__(		\
		"mfctl " #reg ",%0" :	\
		 "=r" (cr)		\
	);				\
	cr;				\
})

#define mtctl(gr, cr) \
	__asm__ __volatile__("mtctl %0,%1" \
		: /* no outputs */ \
		: "r" (gr), "i" (cr) : "memory")

/* these are here to de-mystefy the calling code, and to provide hooks */
/* which I needed for debugging EIEM problems -PB */
#define get_eiem() mfctl(15)
static inline void set_eiem(unsigned long val)
{
	mtctl(val, 15);
}

#define mfsp(reg)	({		\
	unsigned long cr;		\
	__asm__ __volatile__(		\
		"mfsp " #reg ",%0" :	\
		 "=r" (cr)		\
	);				\
	cr;				\
})

#define mtsp(val, cr) \
	{ if (__builtin_constant_p(val) && ((val) == 0)) \
	 __asm__ __volatile__("mtsp %%r0,%0" : : "i" (cr) : "memory"); \
	else \
	 __asm__ __volatile__("mtsp %0,%1" \
		: /* no outputs */ \
		: "r" (val), "i" (cr) : "memory"); }

#endif /* __PARISC_SPECIAL_INSNS_H */