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- #ifndef _TLS_H
- #define _TLS_H 1
- #ifndef __ASSEMBLER__
- # include <stdbool.h>
- # include <stddef.h>
- # include <stdint.h>
- typedef union dtv
- {
- size_t counter;
- struct
- {
- void *val;
- bool is_static;
- } pointer;
- } dtv_t;
- #else
- # include <tcb-offsets.h>
- #endif
- #define HAVE_TLS_SUPPORT 1
- #define HAVE_TLS_MODEL_ATTRIBUTE 1
- #define HAVE___THREAD 1
- #define USE_TLS 1
- #ifndef __ASSEMBLER__
- # include <sysdep.h>
- # define TLS_DTV_AT_TP 1
- # include <../../descr.h>
- typedef struct
- {
- dtv_t *dtv;
- uintptr_t pointer_guard;
- unsigned spare[6];
- } tcbhead_t;
- register struct pthread *__thread_self __asm__("r23");
- #define READ_THREAD_POINTER() ((void *) __thread_self)
- # define TLS_INIT_TCB_SIZE 0
- # define TLS_INIT_TCB_ALIGN __alignof__ (struct pthread)
- # define TLS_TCB_SIZE 0
- # define TLS_TCB_ALIGN __alignof__ (struct pthread)
- # define TLS_PRE_TCB_SIZE \
- (sizeof (struct pthread) \
- + ((sizeof (tcbhead_t) + TLS_TCB_ALIGN - 1) & ~(TLS_TCB_ALIGN - 1)))
- # define TLS_TCB_OFFSET 0x7000
- # define INSTALL_DTV(tcbp, dtvp) \
- (((tcbhead_t *) (tcbp))[-1].dtv = (dtvp) + 1)
- # define INSTALL_NEW_DTV(dtv) \
- (THREAD_DTV() = (dtv))
- # define GET_DTV(tcbp) \
- (((tcbhead_t *) (tcbp))[-1].dtv)
- # define TLS_INIT_TP(tcbp, secondcall) \
- (__thread_self = (struct pthread *) ((char *) tcbp + TLS_TCB_OFFSET), NULL)
- # define TLS_DEFINE_INIT_TP(tp, pd) \
- void *tp = (void *) (pd) + TLS_TCB_OFFSET + TLS_PRE_TCB_SIZE
- # define THREAD_DTV() \
- (((tcbhead_t *) (READ_THREAD_POINTER () - TLS_TCB_OFFSET))[-1].dtv)
- # define THREAD_SELF \
- ((struct pthread *) (READ_THREAD_POINTER () \
- - TLS_TCB_OFFSET - TLS_PRE_TCB_SIZE))
- # define DB_THREAD_SELF \
- REGISTER (32, 32, 23 * 4, -TLS_PRE_TCB_SIZE - TLS_TCB_OFFSET)
- # define THREAD_GETMEM(descr, member) \
- descr->member
- # define THREAD_GETMEM_NC(descr, member, idx) \
- descr->member[idx]
- # define THREAD_SETMEM(descr, member, value) \
- descr->member = (value)
- # define THREAD_SETMEM_NC(descr, member, idx, value) \
- descr->member[idx] = (value)
- # define THREAD_GET_POINTER_GUARD() \
- (((tcbhead_t *) (READ_THREAD_POINTER () \
- - TLS_TCB_OFFSET))[-1].pointer_guard)
- # define THREAD_SET_POINTER_GUARD(value) \
- (THREAD_GET_POINTER_GUARD () = (value))
- # define THREAD_COPY_POINTER_GUARD(descr) \
- (((tcbhead_t *) ((void *) (descr) \
- + TLS_PRE_TCB_SIZE))[-1].pointer_guard \
- = THREAD_GET_POINTER_GUARD())
- # define NO_TLS_OFFSET -1
- #define THREAD_GSCOPE_FLAG_UNUSED 0
- #define THREAD_GSCOPE_FLAG_USED 1
- #define THREAD_GSCOPE_FLAG_WAIT 2
- #define THREAD_GSCOPE_RESET_FLAG() \
- do \
- { int __res \
- = atomic_exchange_rel (&THREAD_SELF->header.gscope_flag, \
- THREAD_GSCOPE_FLAG_UNUSED); \
- if (__res == THREAD_GSCOPE_FLAG_WAIT) \
- lll_futex_wake (&THREAD_SELF->header.gscope_flag, 1, LLL_PRIVATE); \
- } \
- while (0)
- #define THREAD_GSCOPE_SET_FLAG() \
- do \
- { \
- THREAD_SELF->header.gscope_flag = THREAD_GSCOPE_FLAG_USED; \
- atomic_write_barrier (); \
- } \
- while (0)
- #define THREAD_GSCOPE_WAIT() \
- GL(dl_wait_lookup_done) ()
- #endif
- #endif
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