arch/parisc/include/asm/special_insns.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef __PARISC_SPECIAL_INSNS_H
   3 #define __PARISC_SPECIAL_INSNS_H
   4
   5 #define lpa(va) ({                      \
   6         unsigned long pa;               \
   7         __asm__ __volatile__(           \
   8                 "copy %%r0,%0\n\t"      \
   9                 "lpa %%r0(%1),%0"       \
  10                 : "=r" (pa)             \
  11                 : "r" (va)              \
  12                 : "memory"              \
  13         );                              \
  14         pa;                             \
  15 })
  16
  17 #define lpa_user(va)    ({              \
  18         unsigned long pa;               \
  19         __asm__ __volatile__(           \
  20                 "copy %%r0,%0\n\t"      \
  21                 "lpa %%r0(%%sr3,%1),%0" \
  22                 : "=r" (pa)             \
  23                 : "r" (va)              \
  24                 : "memory"              \
  25         );                              \
  26         pa;                             \
  27 })
  28
  29 #define mfctl(reg)      ({              \
  30         unsigned long cr;               \
  31         __asm__ __volatile__(           \
  32                 "mfctl " #reg ",%0" :   \
  33                  "=r" (cr)              \
  34         );                              \
  35         cr;                             \
  36 })
  37
  38 #define mtctl(gr, cr) \
  39         __asm__ __volatile__("mtctl %0,%1" \
  40                 : /* no outputs */ \
  41                 : "r" (gr), "i" (cr) : "memory")
  42
  43 /* these are here to de-mystefy the calling code, and to provide hooks */
  44 /* which I needed for debugging EIEM problems -PB */
  45 #define get_eiem() mfctl(15)
  46 static inline void set_eiem(unsigned long val)
  47 {
  48         mtctl(val, 15);
  49 }
  50
  51 #define mfsp(reg)       ({              \
  52         unsigned long cr;               \
  53         __asm__ __volatile__(           \
  54                 "mfsp " #reg ",%0" :    \
  55                  "=r" (cr)              \
  56         );                              \
  57         cr;                             \
  58 })
  59
  60 #define mtsp(val, cr) \
  61         { if (__builtin_constant_p(val) && ((val) == 0)) \
  62          __asm__ __volatile__("mtsp %%r0,%0" : : "i" (cr) : "memory"); \
  63         else \
  64          __asm__ __volatile__("mtsp %0,%1" \
  65                 : /* no outputs */ \
  66                 : "r" (val), "i" (cr) : "memory"); }
  67
  68 #endif /* __PARISC_SPECIAL_INSNS_H */