15 lines
297 B
C
15 lines
297 B
C
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#define a_cas a_cas
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static inline int a_cas(volatile int *p, int t, int s)
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{
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__asm__("1: l.lwa %0, %1\n"
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" l.sfeq %0, %2\n"
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" l.bnf 1f\n"
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" l.nop\n"
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" l.swa %1, %3\n"
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" l.bnf 1b\n"
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" l.nop\n"
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"1: \n"
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: "=&r"(t), "+m"(*p) : "r"(t), "r"(s) : "cc", "memory" );
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return t;
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}
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