td_thr_tls_get_addr.c 1.6 KB

123456789101112131415161718192021222324252627282930313233343536373839404142434445
  1. /* Get address of thread local variable.
  2. Copyright (C) 2002,2003 Free Software Foundation, Inc.
  3. This file is part of the GNU C Library.
  4. Contributed by Ulrich Drepper <drepper@cygnus.com>, 2002.
  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. The GNU C Library is distributed in the hope that it will be useful,
  10. but WITHOUT ANY WARRANTY; without even the implied warranty of
  11. MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  12. Lesser General Public License for more details.
  13. You should have received a copy of the GNU Lesser General Public
  14. License along with the GNU C Library; if not, write to the Free
  15. Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  16. 02111-1307 USA. */
  17. #include <link.h>
  18. #include "thread_dbP.h"
  19. td_err_e
  20. td_thr_tls_get_addr (const td_thrhandle_t *th __attribute__ ((unused)),
  21. void *map_address __attribute__ ((unused)),
  22. size_t offset __attribute__ ((unused)),
  23. void **address __attribute__ ((unused)))
  24. {
  25. #ifdef __UCLIBC_HAS_TLS__
  26. /* Read the module ID from the link_map. */
  27. size_t modid;
  28. if (ps_pdread (th->th_ta_p->ph,
  29. &((struct link_map *) map_address)->l_tls_modid,
  30. &modid, sizeof modid) != PS_OK)
  31. return TD_ERR; /* XXX Other error value? */
  32. td_err_e result = td_thr_tlsbase (th, modid, address);
  33. if (result == TD_OK)
  34. *address += offset;
  35. return result;
  36. #else
  37. return TD_ERR;
  38. #endif
  39. }