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author | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2015-08-05 17:04:01 -0300 |
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committer | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2015-08-05 17:04:01 -0300 |
commit | 57f0f512b273f60d52568b8c6b77e17f5636edc0 (patch) | |
tree | 5e910f0e82173f4ef4f51111366a3f1299037a7b /arch/parisc/include/asm/special_insns.h |
Initial import
Diffstat (limited to 'arch/parisc/include/asm/special_insns.h')
-rw-r--r-- | arch/parisc/include/asm/special_insns.h | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/arch/parisc/include/asm/special_insns.h b/arch/parisc/include/asm/special_insns.h new file mode 100644 index 000000000..e15093088 --- /dev/null +++ b/arch/parisc/include/asm/special_insns.h @@ -0,0 +1,43 @@ +#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 */ |