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- #ifndef _TLS_H
- #define _TLS_H
- #ifndef __ASSEMBLER__
- # include <pt-machine.h>
- # include <stdbool.h>
- # include <stddef.h>
- typedef union dtv
- {
- size_t counter;
- struct
- {
- void *val;
- bool is_static;
- } pointer;
- } dtv_t;
- typedef struct
- {
- void *tcb;
- dtv_t *dtv;
- void *self;
- int multiple_threads;
- } tcbhead_t;
- #else
- # include <tcb-offsets.h>
- #endif
- #ifdef HAVE_TLS_SUPPORT
- # define USE_TLS 1
- # ifndef __ASSEMBLER__
- # include <sysdep.h>
- # include <linuxthreads/descr.h>
- # define TLS_INIT_TCB_SIZE sizeof (tcbhead_t)
- # define TLS_INIT_TCB_ALIGN __alignof__ (tcbhead_t)
- # define TLS_TCB_SIZE sizeof (struct _pthread_descr_struct)
- # define TLS_TCB_ALIGN __alignof__ (struct _pthread_descr_struct)
- # define TLS_TCB_AT_TP 1
- # define INSTALL_DTV(descr, dtvp) \
- ((tcbhead_t *) (descr))->dtv = (dtvp) + 1
- # define INSTALL_NEW_DTV(DTV) \
- (((tcbhead_t *) __thread_self)->dtv = (DTV))
- # define GET_DTV(descr) \
- (((tcbhead_t *) (descr))->dtv)
- # define TLS_INIT_TP(descr, secondcall) \
- (__thread_self = (__typeof (__thread_self)) (descr), NULL)
- # define THREAD_DTV() \
- (((tcbhead_t *) __thread_self)->dtv)
- # endif
- #else
- # define NONTLS_INIT_TP \
- do { \
- static const tcbhead_t nontls_init_tp \
- = { .multiple_threads = 0 }; \
- __thread_self = (__typeof (__thread_self)) &nontls_init_tp; \
- } while (0)
- #endif
- #endif
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