diff options
Diffstat (limited to 'libc-top-half/musl/arch/powerpc64/atomic_arch.h')
-rw-r--r-- | libc-top-half/musl/arch/powerpc64/atomic_arch.h | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/libc-top-half/musl/arch/powerpc64/atomic_arch.h b/libc-top-half/musl/arch/powerpc64/atomic_arch.h new file mode 100644 index 0000000..2bed82b --- /dev/null +++ b/libc-top-half/musl/arch/powerpc64/atomic_arch.h @@ -0,0 +1,62 @@ +#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_crash a_crash +static inline void a_crash() +{ + __asm__ __volatile__ (".long 0"); +} + +#define a_clz_64 a_clz_64 +static inline int a_clz_64(uint64_t x) +{ + __asm__ ("cntlzd %0, %1" : "=r"(x) : "r"(x)); + return x; +} |