1 /* SPDX-License-Identifier: GPL-2.0 */ 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 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" \ 41 : /* no outputs */ \ 42 : "r" (val), "i" (cr) : "memory"); } 43 44 #endif /* __PARISC_SPECIAL_INSNS_H */ 45