sysdeps/generic/unwind-resume.c

   1 /* Copyright (C) 2003-2022 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   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 License as
   6    published by the Free Software Foundation; either version 2.1 of the
   7    License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; see the file COPYING.LIB.  If
  16    not, see <https://www.gnu.org/licenses/>.  */
  17
  18 #include <stdio.h>
  19 #include <gnu/lib-names.h>
  20 #include <unwind-link.h>
  21 #include <sysdep.h>
  22 #include <unwind-resume.h>
  23
  24 static struct unwind_link *
  25 link (void)
  26 {
  27   struct unwind_link *unwind_link = __libc_unwind_link_get ();
  28   if (unwind_link == NULL)
  29     __libc_fatal (LIBGCC_S_SO " must be installed for unwinding to work\n");
  30   return unwind_link;
  31 }
  32
  33 #if !HAVE_ARCH_UNWIND_RESUME
  34 void
  35 _Unwind_Resume (struct _Unwind_Exception *exc)
  36 {
  37   UNWIND_LINK_PTR (link (), _Unwind_Resume) (exc);
  38 }
  39 #endif
  40
  41 _Unwind_Reason_Code
  42 __gcc_personality_v0 PERSONALITY_PROTO
  43 {
  44   return UNWIND_LINK_PTR (link (), personality) PERSONALITY_ARGS;
  45 }
  46
  47 _Unwind_Reason_Code
  48 _Unwind_ForcedUnwind (struct _Unwind_Exception *exc, _Unwind_Stop_Fn stop,
  49                       void *stop_argument)
  50 {
  51   return UNWIND_LINK_PTR (link (), _Unwind_ForcedUnwind)
  52     (exc, stop, stop_argument);
  53 }
  54
  55 _Unwind_Word
  56 _Unwind_GetCFA (struct _Unwind_Context *context)
  57 {
  58   return UNWIND_LINK_PTR (link (), _Unwind_GetCFA) (context);
  59 }