sysdeps/arm/unwind-arch.h

   1 /* Dynamic loading of the libgcc unwinder.  Arm customization.
   2    Copyright (C) 2021-2023 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 _ARCH_UNWIND_LINK_H
  20 #define _ARCH_UNWIND_LINK_H
  21
  22 /* On arm, _Unwind_GetIP is a macro.  */
  23 #define UNWIND_LINK_GETIP 0
  24
  25 #define UNWIND_LINK_FRAME_STATE_FOR 0
  26 #define UNWIND_LINK_FRAME_ADJUSTMENT 0
  27 #define UNWIND_LINK_EXTRA_FIELDS \
  28   __typeof (_Unwind_VRS_Get) *ptr__Unwind_VRS_Get;
  29 #define UNWIND_LINK_EXTRA_INIT                                \
  30   local.ptr__Unwind_VRS_Get                                   \
  31     = __libc_dlsym (local_libgcc_handle, "_Unwind_VRS_Get");  \
  32   assert (local.ptr__Unwind_VRS_Get != NULL);                 \
  33   PTR_MANGLE (local.ptr__Unwind_VRS_Get);
  34
  35 /* This is used by the _Unwind_Resume assembler implementation to
  36    obtain the address to jump to.  */
  37 void *__unwind_link_get_resume (void) attribute_hidden;
  38
  39 #endif /* _ARCH_UNWIND_LINK_H */