1  /* Manage TLS descriptors.  x86_64 version.
       2     Copyright (C) 2005-2023 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  #include <ldsodefs.h>
      20  #include <tls.h>
      21  #include <dl-tlsdesc.h>
      22  #include <dl-unmap-segments.h>
      23  #include <tlsdeschtab.h>
      24  
      25  /* Unmap the dynamic object, but also release its TLS descriptor table
      26     if there is one.  */
      27  
      28  void
      29  _dl_unmap (struct link_map *map)
      30  {
      31    _dl_unmap_segments (map);
      32  
      33  #ifdef SHARED
      34    /* _dl_unmap is only called for dlopen()ed libraries, for which
      35       calling free() is safe, or before we've completed the initial
      36       relocation, in which case calling free() is probably pointless,
      37       but still safe.  */
      38    if (map->l_mach.tlsdesc_table)
      39      htab_delete (map->l_mach.tlsdesc_table);
      40  #endif
      41  }