sysdeps/generic/dl-fptr.h

   1 /* Function descriptors. Generic version.
   2    Copyright (C) 1995, 1996, 1997, 2000, 2001 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 #ifndef dl_fptr_h
  21 #define dl_fptr_h 1
  22
  23 /* An FDESC is a function descriptor.  */
  24
  25 struct fdesc
  26   {
  27     ElfW(Addr) ip;      /* code entry point */
  28     ElfW(Addr) gp;      /* global pointer */
  29   };
  30
  31 struct fdesc_table
  32   {
  33     struct fdesc_table *next;
  34     unsigned int len;                   /* # of entries in fdesc table */
  35     volatile unsigned int first_unused; /* index of first available entry */
  36     struct fdesc fdesc[0];
  37   };
  38
  39 struct link_map;
  40
  41 extern ElfW(Addr) _dl_boot_fptr_table [];
  42
  43 extern ElfW(Addr) _dl_make_fptr (struct link_map *, const ElfW(Sym) *,
  44                                  ElfW(Addr));
  45
  46 #endif /* !dl_fptr_h */