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https://github.com/jart/cosmopolitan.git
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6f7d0cb1c3
This makes breaking changes to add underscores to many non-standard function names provided by the c library. MODE=tiny is now tinier and we now use smaller locks that are better for tiny apps in this mode. Some headers have been renamed to be in the same folder as the build package, so it'll be easier to know which build dependency is needed. Certain old misguided interfaces have been removed. Intel intrinsics headers are now listed in libc/isystem (but not in the amalgamation) to help further improve open source compatibility. Header complexity has also been reduced. Lastly, more shell scripts are now available.
48 lines
1.3 KiB
C
48 lines
1.3 KiB
C
#ifndef COSMOPOLITAN_LIBC_THREAD_TLS_H_
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#define COSMOPOLITAN_LIBC_THREAD_TLS_H_
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#define TLS_ALIGNMENT 64
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#if !(__ASSEMBLER__ + __LINKER__ + 0)
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COSMOPOLITAN_C_START_
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struct CosmoFtrace { /* 16 */
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bool ft_once; /* 0 */
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bool ft_noreentry; /* 1 */
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int ft_skew; /* 4 */
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int64_t ft_lastaddr; /* 8 */
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};
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struct CosmoTib {
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struct CosmoTib *tib_self; /* 0x00 */
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struct CosmoFtrace tib_ftrace; /* 0x08 */
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void *tib_garbages; /* 0x18 */
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intptr_t tib_locale; /* 0x20 */
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intptr_t tib_pthread; /* 0x28 */
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struct CosmoTib *tib_self2; /* 0x30 */
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_Atomic(int32_t) tib_tid; /* 0x38 */
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int32_t tib_errno; /* 0x3c */
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};
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extern int __threaded;
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extern bool __tls_enabled;
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extern unsigned __tls_index;
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void __require_tls(void);
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#if defined(__GNUC__) && defined(__x86_64__) && !defined(__STRICT_ANSI__)
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/**
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* Returns location of thread information block.
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*
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* This can't be used in privileged functions.
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*/
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static inline struct CosmoTib *__get_tls(void) {
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struct CosmoTib *_tib;
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asm("mov\t%%fs:0,%0" : "=r"(_tib) : /* no inputs */ : "memory");
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return _tib;
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}
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#endif /* GNU x86-64 */
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COSMOPOLITAN_C_END_
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#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
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#endif /* COSMOPOLITAN_LIBC_THREAD_TLS_H_ */
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