diff options
Diffstat (limited to 'arch/mips64/atomic_arch.h')
| -rw-r--r-- | arch/mips64/atomic_arch.h | 20 |
1 files changed, 13 insertions, 7 deletions
diff --git a/arch/mips64/atomic_arch.h b/arch/mips64/atomic_arch.h index b468fd95..d0f8b4ad 100644 --- a/arch/mips64/atomic_arch.h +++ b/arch/mips64/atomic_arch.h @@ -1,10 +1,16 @@ +#if __mips_isa_rev < 6 +#define LLSC_M "m" +#else +#define LLSC_M "ZC" +#endif + #define a_ll a_ll static inline int a_ll(volatile int *p) { int v; __asm__ __volatile__ ( "ll %0, %1" - : "=r"(v) : "m"(*p)); + : "=r"(v) : LLSC_M(*p)); return v; } @@ -14,7 +20,7 @@ static inline int a_sc(volatile int *p, int v) int r; __asm__ __volatile__ ( "sc %0, %1" - : "=r"(r), "=m"(*p) : "0"(v) : "memory"); + : "=r"(r), "="LLSC_M(*p) : "0"(v) : "memory"); return r; } @@ -24,7 +30,7 @@ static inline void *a_ll_p(volatile void *p) void *v; __asm__ __volatile__ ( "lld %0, %1" - : "=r"(v) : "m"(*(void *volatile *)p)); + : "=r"(v) : LLSC_M(*(void *volatile *)p)); return v; } @@ -34,17 +40,17 @@ static inline int a_sc_p(volatile void *p, void *v) long r; __asm__ __volatile__ ( "scd %0, %1" - : "=r"(r), "=m"(*(void *volatile *)p) : "0"(v) : "memory"); + : "=r"(r), "="LLSC_M(*(void *volatile *)p) : "0"(v) : "memory"); return r; } #define a_barrier a_barrier static inline void a_barrier() { - /* mips2 sync, but using too many directives causes - * gcc not to inline it, so encode with .long instead. */ - __asm__ __volatile__ (".long 0xf" : : : "memory"); + __asm__ __volatile__ ("sync" : : : "memory"); } #define a_pre_llsc a_barrier #define a_post_llsc a_barrier + +#undef LLSC_M |