mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-01-31 11:37:35 +00:00
88 lines
2.4 KiB
C
88 lines
2.4 KiB
C
#ifndef COSMOPOLITAN_LIBC_THREAD_TLS_H_
|
|
#define COSMOPOLITAN_LIBC_THREAD_TLS_H_
|
|
|
|
#define TLS_ALIGNMENT 64
|
|
|
|
#define TIB_FLAG_VFORKED 1
|
|
|
|
#if !(__ASSEMBLER__ + __LINKER__ + 0)
|
|
COSMOPOLITAN_C_START_
|
|
|
|
struct CosmoFtrace { /* 16 */
|
|
char ft_once; /* 0 */
|
|
char ft_noreentry; /* 1 */
|
|
int ft_skew; /* 4 */
|
|
int64_t ft_lastaddr; /* 8 */
|
|
};
|
|
|
|
/* NOTE: update aarch64 libc/errno.h if sizeof changes */
|
|
/* NOTE: update aarch64 libc/proc/vfork.S if sizeof changes */
|
|
/* NOTE: update aarch64 libc/nexgen32e/gc.S if sizeof changes */
|
|
struct CosmoTib {
|
|
struct CosmoTib *tib_self; /* 0x00 */
|
|
struct CosmoFtrace tib_ftracer; /* 0x08 */
|
|
void *tib_garbages; /* 0x18 */
|
|
intptr_t tib_locale; /* 0x20 */
|
|
intptr_t tib_pthread; /* 0x28 */
|
|
struct CosmoTib *tib_self2; /* 0x30 */
|
|
_Atomic(int32_t) tib_tid; /* 0x38 transitions -1 → tid → 0 */
|
|
int32_t tib_errno; /* 0x3c */
|
|
uint64_t tib_flags; /* 0x40 */
|
|
int tib_ftrace; /* inherited */
|
|
int tib_strace; /* inherited */
|
|
_Atomic(uint64_t) tib_sigmask; /* inherited */
|
|
_Atomic(uint64_t) tib_sigpending;
|
|
_Atomic(uint64_t) tib_syshand; /* win32=kThread, xnusilicon=pthread_t */
|
|
char *tib_sigstack_addr;
|
|
uint32_t tib_sigstack_size;
|
|
uint32_t tib_sigstack_flags;
|
|
void **tib_keys;
|
|
void *tib_nsync;
|
|
void *tib_todo[7];
|
|
};
|
|
|
|
extern int __threaded;
|
|
extern unsigned __tls_index;
|
|
|
|
char *_mktls(struct CosmoTib **);
|
|
void __bootstrap_tls(struct CosmoTib *, char *);
|
|
|
|
#ifdef __x86_64__
|
|
extern char __tls_enabled;
|
|
#define __tls_enabled_set(x) __tls_enabled = x
|
|
#elif defined(__aarch64__)
|
|
#define __tls_enabled true
|
|
#define __tls_enabled_set(x) (void)0
|
|
#else
|
|
#error "unsupported architecture"
|
|
#endif
|
|
|
|
void __set_tls(struct CosmoTib *);
|
|
|
|
/**
|
|
* Returns location of thread information block.
|
|
*
|
|
* This can't be used in privileged functions.
|
|
*/
|
|
__funline pureconst struct CosmoTib *__get_tls(void) {
|
|
#ifdef __chibicc__
|
|
return 0;
|
|
#elif __x86_64__
|
|
struct CosmoTib *__tib;
|
|
__asm__("mov\t%%fs:0,%0" : "=r"(__tib));
|
|
return __tib;
|
|
#elif defined(__aarch64__)
|
|
register struct CosmoTib *__tls __asm__("x28");
|
|
return __tls - 1;
|
|
#endif
|
|
}
|
|
|
|
#ifdef __x86_64__
|
|
#define __adj_tls(tib) (tib)
|
|
#elif defined(__aarch64__)
|
|
#define __adj_tls(tib) ((struct CosmoTib *)(tib) + 1)
|
|
#endif
|
|
|
|
COSMOPOLITAN_C_END_
|
|
#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
|
|
#endif /* COSMOPOLITAN_LIBC_THREAD_TLS_H_ */
|