dl-tls.h 1.7 KB

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  1. /* Thread-local storage handling in the ELF dynamic linker. M68K version.
  2. Copyright (C) 2010-2017 Free Software Foundation, Inc.
  3. Contributed by Maxim Kuvyrkov <maxim@codesourcery.com>, 2010.
  4. The GNU C Library is free software; you can redistribute it and/or
  5. modify it under the terms of the GNU Lesser General Public
  6. License as published by the Free Software Foundation; either
  7. version 2.1 of the License, or (at your option) any later version.
  8. The GNU C Library is distributed in the hope that it will be useful,
  9. but WITHOUT ANY WARRANTY; without even the implied warranty of
  10. MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  11. Lesser General Public License for more details.
  12. You should have received a copy of the GNU Lesser General Public
  13. License along with the GNU C Library. If not, see
  14. <http://www.gnu.org/licenses/>. */
  15. /* Type used for the representation of TLS information in the GOT. */
  16. typedef struct
  17. {
  18. unsigned long int ti_module;
  19. unsigned long int ti_offset;
  20. } tls_index;
  21. /* The thread pointer points 0x7000 past the first static TLS block. */
  22. #define TLS_TP_OFFSET 0x7000
  23. /* Dynamic thread vector pointers point 0x8000 past the start of each
  24. TLS block. */
  25. #define TLS_DTV_OFFSET 0x8000
  26. /* Compute the value for a TPREL reloc. */
  27. #define TLS_TPREL_VALUE(sym_map, sym, reloc) \
  28. ((sym_map)->l_tls_offset + (sym)->st_value + (reloc)->r_addend \
  29. - TLS_TP_OFFSET)
  30. /* Compute the value for a DTPREL reloc. */
  31. #define TLS_DTPREL_VALUE(sym, reloc) \
  32. ((sym)->st_value + (reloc)->r_addend - TLS_DTV_OFFSET)
  33. extern void *__tls_get_addr (tls_index *ti);
  34. #define GET_ADDR_OFFSET (ti->ti_offset + TLS_DTV_OFFSET)
  35. #define __TLS_GET_ADDR(__ti) (__tls_get_addr (__ti) - TLS_DTV_OFFSET)