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24 lines
858 B
C
24 lines
858 B
C
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#ifndef COSMOPOLITAN_LIBC_INTRIN_ATOMIC_STORE_H_
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#define COSMOPOLITAN_LIBC_INTRIN_ATOMIC_STORE_H_
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#if !(__ASSEMBLER__ + __LINKER__ + 0)
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COSMOPOLITAN_C_START_
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intptr_t atomic_store(void *, intptr_t, size_t);
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#if defined(__GNUC__) && !defined(__STRICT_ANSI__)
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#define atomic_store(MEM, VAL) \
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({ \
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autotype(VAL) Val = (VAL); \
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typeof(&Val) Mem = (MEM); \
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asm("mov%z1\t%1,%0" : "=m"(*Mem) : "r"(Val)); \
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Val; \
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})
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#else
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#define atomic_store(MEM, VAL) \
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atomic_store(MEM, VAL, sizeof(*(MEM)) / (sizeof(*(MEM)) == sizeof(*(VAL))))
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#endif /* __GNUC__ && !__STRICT_ANSI__ */
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COSMOPOLITAN_C_END_
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#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
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#endif /* COSMOPOLITAN_LIBC_INTRIN_ATOMIC_STORE_H_ */
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