sysdeps/nacl/tls.h

   1 /* Definition for thread-local data handling.  NaCl version.
   2    Copyright (C) 2015-2017 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    <http://www.gnu.org/licenses/>.  */
  18
  19 #ifndef _NACL_TLS_H
  20 #define _NACL_TLS_H     1
  21
  22 #ifndef __ASSEMBLER__
  23
  24 # include <nacl-interfaces.h>
  25
  26 /* Code to initially initialize the thread pointer.  This might need
  27    special attention since 'errno' is not yet available and if the
  28    operation can cause a failure 'errno' must not be touched.  */
  29 # define TLS_INIT_TP(tcbp) \
  30   ((*__nacl_irt_tls.tls_init) (tcbp) == 0 ? NULL : "tls_init call failed")
  31
  32 /* Our use of dl_sysinfo is rather different from the Linux syscall
  33    entry-point case.  We never need a thread-local copy of the value.  */
  34 # undef SETUP_THREAD_SYSINFO
  35 # undef CHECK_THREAD_SYSINFO
  36 # define SETUP_THREAD_SYSINFO(pd) ((void) (pd))
  37 # define CHECK_THREAD_SYSINFO(pd) ((void) (pd))
  38
  39 #endif /* __ASSEMBLER__ */
  40
  41 #endif  /* tls.h */