special_insns.h
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#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 */