diff options
Diffstat (limited to 'arch/parisc')
| -rw-r--r-- | arch/parisc/include/asm/special_insns.h | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/arch/parisc/include/asm/special_insns.h b/arch/parisc/include/asm/special_insns.h index d306b75bc77f..e1509308899f 100644 --- a/arch/parisc/include/asm/special_insns.h +++ b/arch/parisc/include/asm/special_insns.h @@ -32,9 +32,12 @@ static inline void set_eiem(unsigned long val) cr; \ }) -#define mtsp(gr, cr) \ - __asm__ __volatile__("mtsp %0,%1" \ +#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" (gr), "i" (cr) : "memory") + : "r" (val), "i" (cr) : "memory"); } #endif /* __PARISC_SPECIAL_INSNS_H */ |