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revert some more spin optimizations that turned out to be pessimizations
[oweals/musl.git]
/
arch
/
x86_64
/
pthread_arch.h
1
static inline struct pthread *__pthread_self()
2
{
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struct pthread *self;
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__asm__ ("movq %%fs:0,%0" : "=r" (self) );
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return self;
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}
7
8
#define PC_AT_SYS(c) \
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(*(uint16_t *)(((ucontext_t *)(c))->uc_mcontext.__gregs[16])==0x050f)