1: /* Thread-local data used by error handling for runtime dynamic linker.
    2:    Copyright (C) 2002, 2005 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, write to the Free
   17:    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
   18:    02111-1307 USA.  */
   19: 
   20: #ifdef _LIBC_REENTRANT
   21: 
   22: # include <ldsodefs.h>
   23: # include <tls.h>
   24: 
   25: # ifndef SHARED
   26: 
   27: /* _dl_error_catch_tsd points to this for the single-threaded case.
   28:    It's reset by the thread library for multithreaded programs
   29:    if we're not using __thread.  */
   30: void ** __attribute__ ((const))
   31: _dl_initial_error_catch_tsd (void)
   32: {
   33: #  if USE___THREAD
   34:   static __thread void *data;
   35: #  else
   36:   static void *data;
   37: #  endif
   38:   return &data;
   39: }
   40: void **(*_dl_error_catch_tsd) (void) __attribute__ ((const))
   41:      = &_dl_initial_error_catch_tsd;
   42: 
   43: # elif USE___THREAD
   44: 
   45: /* libpthread sets _dl_error_catch_tsd to point to this function.
   46:    We define it here instead of in libpthread so that it doesn't
   47:    need to have a TLS segment of its own just for this one pointer.  */
   48: 
   49: void ** __attribute__ ((const))
   50: __libc_dl_error_tsd (void)
   51: {
   52:   static __thread void *data attribute_tls_model_ie;
   53:   return &data;
   54: }
   55: 
   56: # endif /* SHARED */
   57: 
   58: #endif /* _LIBC_REENTRANT */