| #define a_ll a_ll |
| static inline int a_ll(volatile int *p) |
| { |
| int v; |
| __asm__ __volatile__ ("lwarx %0, 0, %2" : "=r"(v) : "m"(*p), "r"(p)); |
| return v; |
| } |
| |
| #define a_sc a_sc |
| static inline int a_sc(volatile int *p, int v) |
| { |
| int r; |
| __asm__ __volatile__ ( |
| "stwcx. %2, 0, %3 ; mfcr %0" |
| : "=r"(r), "=m"(*p) : "r"(v), "r"(p) : "memory", "cc"); |
| return r & 0x20000000; /* "bit 2" of "cr0" (backwards bit order) */ |
| } |
| |
| #define a_ll_p a_ll_p |
| static inline void *a_ll_p(volatile void *p) |
| { |
| void *v; |
| __asm__ __volatile__ ("ldarx %0, 0, %2" : "=r"(v) : "m"(*(void *volatile *)p), "r"(p)); |
| return v; |
| } |
| |
| #define a_sc_p a_sc_p |
| static inline int a_sc_p(volatile void *p, void *v) |
| { |
| int r; |
| __asm__ __volatile__ ( |
| "stdcx. %2, 0, %3 ; mfcr %0" |
| : "=r"(r), "=m"(*(void *volatile *)p) : "r"(v), "r"(p) : "memory", "cc"); |
| return r & 0x20000000; /* "bit 2" of "cr0" (backwards bit order) */ |
| } |
| |
| #define a_barrier a_barrier |
| static inline void a_barrier() |
| { |
| __asm__ __volatile__ ("sync" : : : "memory"); |
| } |
| |
| #define a_pre_llsc a_barrier |
| |
| #define a_post_llsc a_post_llsc |
| static inline void a_post_llsc() |
| { |
| __asm__ __volatile__ ("isync" : : : "memory"); |
| } |
| |
| #define a_store a_store |
| static inline void a_store(volatile int *p, int v) |
| { |
| a_pre_llsc(); |
| *p = v; |
| a_post_llsc(); |
| } |
| |
| #define a_crash a_crash |
| static inline void a_crash() |
| { |
| __asm__ __volatile__ (".long 0"); |
| } |