1  /* Definitions for thread-local data handling.  Hurd version.
       2     Copyright (C) 2003-2023 Free Software Foundation, Inc.
       3     This file is part of the GNU C Library.
       4  
       5     The GNU C Library is free software; you can redistribute it and/or
       6     modify it under the terms of the GNU Lesser General Public
       7     License as published by the Free Software Foundation; either
       8     version 2.1 of the License, or (at your option) any later version.
       9  
      10     The GNU C Library is distributed in the hope that it will be useful,
      11     but WITHOUT ANY WARRANTY; without even the implied warranty of
      12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      13     Lesser General Public License for more details.
      14  
      15     You should have received a copy of the GNU Lesser General Public
      16     License along with the GNU C Library; if not, see
      17     <https://www.gnu.org/licenses/>.  */
      18  
      19  #ifndef _TLS_H
      20  #define _TLS_H
      21  
      22  #ifndef __ASSEMBLER__
      23  
      24  # include <stddef.h>
      25  # include <stdint.h>
      26  # include <stdbool.h>
      27  # include <sysdep.h>
      28  # include <mach/mig_errors.h>
      29  # include <mach.h>
      30  # include <atomic.h>
      31  
      32  /* This is the size of the initial TCB.  */
      33  # define TLS_INIT_TCB_SIZE sizeof (tcbhead_t)
      34  
      35  /* This is the size of the TCB.  */
      36  # define TLS_TCB_SIZE TLS_INIT_TCB_SIZE	/* XXX */
      37  
      38  /* Install the dtv pointer.  The pointer passed is to the element with
      39     index -1 which contain the length.  */
      40  # define INSTALL_DTV(descr, dtvp) \
      41    ((tcbhead_t *) (descr))->dtv = (dtvp) + 1
      42  
      43  /* Return dtv of given thread descriptor.  */
      44  # define GET_DTV(descr) \
      45    (((tcbhead_t *) (descr))->dtv)
      46  
      47  #endif /* !ASSEMBLER */
      48  
      49  
      50  #endif /* tls.h */