| /* __frame_state_for unwinder helper function wrapper. |
| Copyright (C) 2001-2018 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| Contributed by Jakub Jelinek <jakub@redhat.com>, 2001. |
| |
| The GNU C Library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| The GNU C Library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU C Library; if not, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #include <dlfcn.h> |
| #include <stdlib.h> |
| #define STATIC static |
| #define __frame_state_for fallback_frame_state_for |
| #include <unwind-dw2.c> |
| #undef __frame_state_for |
| #include <gnu/lib-names.h> |
| |
| typedef struct frame_state * (*framesf)(void *pc, struct frame_state *); |
| struct frame_state *__frame_state_for (void *pc, |
| struct frame_state *frame_state); |
| |
| struct frame_state * |
| __frame_state_for (void *pc, struct frame_state *frame_state) |
| { |
| static framesf frame_state_for; |
| |
| if (frame_state_for == NULL) |
| { |
| void *handle = __libc_dlopen (LIBGCC_S_SO); |
| |
| if (handle == NULL |
| || (frame_state_for |
| = (framesf) __libc_dlsym (handle, "__frame_state_for")) == NULL) |
| #ifndef __USING_SJLJ_EXCEPTIONS__ |
| frame_state_for = fallback_frame_state_for; |
| #else |
| frame_state_for = abort; |
| #endif |
| } |
| |
| return frame_state_for (pc, frame_state); |
| } |