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- #ifndef _TLS_H
- #define _TLS_H
- #ifndef __ASSEMBLER__
- # include <stdbool.h>
- # include <stddef.h>
- # include <stdint.h>
- # include <stdlib.h>
- # include <list.h>
- # include <sysdep.h>
- # include <bits/kernel-features.h>
- typedef union dtv
- {
- size_t counter;
- struct
- {
- void *val;
- bool is_static;
- } pointer;
- } dtv_t;
- typedef struct
- {
- dtv_t *dtv;
- uintptr_t pointer_guard;
- } tcbhead_t;
- # define TLS_MULTIPLE_THREADS_IN_TCB 1
- #else
- # include <tcb-offsets.h>
- .macro THREAD_SELF reg
- # struct pthread is just ahead of TCB
- sub \reg, r25, TLS_PRE_TCB_SIZE
- .endm
- .macro SET_TP tcb
- mov r25, \tcb
- .endm
- #endif
- #define HAVE_TLS_SUPPORT
- #define HAVE___THREAD 1
- #define HAVE_TLS_MODEL_ATTRIBUTE 1
- # define USE_TLS 1
- #ifndef __ASSEMBLER__
- # include <sysdep.h>
- # define TLS_INIT_TCB_SIZE sizeof (tcbhead_t)
- # define TLS_INIT_TCB_ALIGN __alignof__ (tcbhead_t)
- #ifndef TLS_TCB_SIZE
- # define TLS_TCB_SIZE sizeof (tcbhead_t)
- #endif
- # define TLS_PRE_TCB_SIZE sizeof (struct pthread)
- # define TLS_TCB_ALIGN __alignof__ (struct pthread)
- # define TLS_DTV_AT_TP 1
- # include <descr.h>
- # define INSTALL_DTV(tcbp, dtvp) \
- ((tcbhead_t *) (tcbp))->dtv = (dtvp) + 1
- # define INSTALL_NEW_DTV(dtv) \
- (THREAD_DTV() = (dtv))
- # define GET_DTV(tcbp) \
- (((tcbhead_t *) (tcbp))->dtv)
- # define TLS_INIT_TP(tcbp, secondcall) \
- ({ \
- long result_var; \
- __builtin_set_thread_pointer(tcbp); \
- result_var = INTERNAL_SYSCALL (arc_settls, err, 1, (tcbp)); \
- INTERNAL_SYSCALL_ERROR_P (result_var, err) \
- ? "unknown error" : NULL; \
- })
- # define THREAD_DTV() \
- (((tcbhead_t *)__builtin_thread_pointer())->dtv)
- # define THREAD_SELF \
- ((struct pthread *)__builtin_thread_pointer() - 1)
- # define DB_THREAD_SELF \
- CONST_THREAD_AREA (32, sizeof (struct pthread))
- #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_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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