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) 21static 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