mirror of git://git.musl-libc.org/musl
57 lines
966 B
C
57 lines
966 B
C
#if __mips_isa_rev < 6
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#define LLSC_M "m"
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#else
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#define LLSC_M "ZC"
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#endif
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#define a_ll a_ll
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static inline int a_ll(volatile int *p)
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{
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int v;
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__asm__ __volatile__ (
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"ll %0, %1"
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: "=r"(v) : LLSC_M(*p));
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return v;
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}
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#define a_sc a_sc
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static inline int a_sc(volatile int *p, int v)
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{
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int r;
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__asm__ __volatile__ (
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"sc %0, %1"
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: "=r"(r), "="LLSC_M(*p) : "0"(v) : "memory");
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return r;
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}
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#define a_ll_p a_ll_p
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static inline void *a_ll_p(volatile void *p)
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{
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void *v;
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__asm__ __volatile__ (
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"lld %0, %1"
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: "=r"(v) : LLSC_M(*(void *volatile *)p));
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return v;
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}
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#define a_sc_p a_sc_p
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static inline int a_sc_p(volatile void *p, void *v)
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{
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long r;
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__asm__ __volatile__ (
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"scd %0, %1"
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: "=r"(r), "="LLSC_M(*(void *volatile *)p) : "0"(v) : "memory");
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return r;
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}
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#define a_barrier a_barrier
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static inline void a_barrier()
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{
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__asm__ __volatile__ ("sync" : : : "memory");
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}
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#define a_pre_llsc a_barrier
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#define a_post_llsc a_barrier
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#undef LLSC_M
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