[mirror_ubuntu-bionic-kernel.git] / arch / parisc / include / asm / special_insns.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __PARISC_SPECIAL_INSNS_H
#define __PARISC_SPECIAL_INSNS_H

#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 */
Commit	Line	Data
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
527dcdcc DH	44	#endif /* __PARISC_SPECIAL_INSNS_H */