sysdeps/mips/dl-debug.h

   1 /* Debugging support.  MIPS version.
   2    Copyright (C) 2022-2023 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 #ifndef _DL_DEBUG_H
  20 #define _DL_DEBUG_H
  21
  22 /* If there is a DT_MIPS_RLD_MAP_REL or DT_MIPS_RLD_MAP entry in the
  23    dynamic section, fill in the debug map pointer with the run-time
  24    address of the r_debug structure.  */
  25
  26 static inline void
  27 __attribute ((always_inline))
  28 elf_setup_debug_entry (struct link_map *l, struct r_debug *r)
  29 {
  30   if (l->l_info[DT_MIPS (RLD_MAP_REL)] != NULL)
  31     {
  32       char *ptr = (char *) l->l_info[DT_MIPS (RLD_MAP_REL)];
  33       ptr += l->l_info[DT_MIPS (RLD_MAP_REL)]->d_un.d_val;
  34       *(ElfW(Addr) *) ptr = (ElfW(Addr)) r;
  35     }
  36   else if (l->l_info[DT_MIPS (RLD_MAP)] != NULL)
  37     *(ElfW(Addr) *) (l->l_info[DT_MIPS (RLD_MAP)]->d_un.d_ptr)
  38       = (ElfW(Addr)) r;
  39 }
  40
  41 #endif /* _DL_DEBUG_H */