sysdeps/tile/dl-tls.h

   1 /* Copyright (C) 2011-2014 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by Chris Metcalf <cmetcalf@tilera.com>, 2011.
   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
  20 /* Type used for the representation of TLS information in the GOT.  */
  21 typedef struct
  22 {
  23   unsigned long int ti_module;
  24   unsigned long int ti_offset;
  25 } tls_index;
  26
  27 /* Fast-path function to get a TLS pointer.  */
  28 extern void *__tls_get_addr (tls_index *ti);
  29
  30 /* The thread pointer points to the first static TLS block.  */
  31 #define TLS_TP_OFFSET           0
  32
  33 /* Dynamic thread vector pointers at the start of each TLS block.  */
  34 #define TLS_DTV_OFFSET          0
  35
  36 /* Compute the value for a GOTTPREL reloc.  */
  37 #define TLS_TPREL_VALUE(sym_map, sym) \
  38   ((sym_map)->l_tls_offset + (sym)->st_value - TLS_TP_OFFSET)
  39
  40 /* Compute the value for a DTPREL reloc.  */
  41 #define TLS_DTPREL_VALUE(sym) \
  42   ((sym)->st_value - TLS_DTV_OFFSET)
  43
  44 /* Value used for dtv entries for which the allocation is delayed.  */
  45 #define TLS_DTV_UNALLOCATED    ((void *) -1l)