mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-02-01 03:53:33 +00:00
046c7ebd4a
- Introduce fast spinlock API - Double rand64() perf w/ spinlock - Improve raise() on New Technology - Support gettid() across platforms - Implement SA_NODEFER on New Technology - Move the lock intrinsics into LIBC_INTRIN - Make SIGTRAP recoverable on New Technology - Block SIGCHLD in wait4() on New Technology - Add threading prototypes for XNU and FreeBSD - Rewrite abort() fixing its minor bugs on XNU/NT - Shave down a lot of the content in libc/bits/bits.h - Let signal handlers modify CPU registers on New Technology
23 lines
858 B
C
23 lines
858 B
C
#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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