mirror of git://git.musl-libc.org/musl
40 lines
799 B
C
40 lines
799 B
C
#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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".set push ; .set mips2\n\t"
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"ll %0, %1"
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"\n\t.set pop"
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: "=r"(v) : "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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".set push ; .set mips2\n\t"
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"sc %0, %1"
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"\n\t.set pop"
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: "=r"(r), "=m"(*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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/* mips2 sync, but using too many directives causes
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* gcc not to inline it, so encode with .long instead. */
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__asm__ __volatile__ (".long 0xf" : : : "memory");
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#if 0
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__asm__ __volatile__ (
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".set push ; .set mips2 ; sync ; .set pop"
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: : : "memory");
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#endif
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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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