mirror of
https://github.com/jart/cosmopolitan.git
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1422e96b4e
There's a new program named ape/ape-m1.c which will be used to build an embeddable binary that can load ape and elf executables. The support is mostly working so far, but still chasing down ABI issues.
75 lines
2.2 KiB
C
75 lines
2.2 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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#define TIB_FLAG_TIME_CRITICAL 1
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#define TIB_FLAG_VFORKED 2
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#define TIB_FLAG_WINCRASHING 4
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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_ftracer; /* 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 transitions -1 → tid → 0 */
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int32_t tib_errno; /* 0x3c */
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uint64_t tib_flags; /* 0x40 */
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void *tib_nsync;
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int tib_ftrace; /* inherited */
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int tib_strace; /* inherited */
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uint64_t tib_sigmask; /* inherited */
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void *tib_reserved4;
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void *tib_reserved5;
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void *tib_reserved6;
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void *tib_reserved7;
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void *tib_keys[128];
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};
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extern int __threaded;
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extern unsigned __tls_index;
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#ifdef __x86_64__
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extern bool __tls_enabled;
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#define __tls_enabled_set(x) __tls_enabled = x
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#else
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#define __tls_enabled true
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#define __tls_enabled_set(x) (void)0
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#endif
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void __require_tls(void);
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void __set_tls(struct CosmoTib *);
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#ifdef __x86_64__
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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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#define __get_tls() \
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({ \
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struct CosmoTib *_t; \
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asm("mov\t%%fs:0,%0" : "=r"(_t) : /* no inputs */ : "memory"); \
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_t; \
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})
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#define __adj_tls(tib) (tib)
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#elif defined(__aarch64__)
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#define __get_tls() ((struct CosmoTib *)__builtin_thread_pointer() - 1)
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#define __adj_tls(tib) ((struct CosmoTib *)(tib) + 1)
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#endif
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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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