diff options
Diffstat (limited to 'REORG.TODO/sysdeps/generic/framestate.c')
-rw-r--r-- | REORG.TODO/sysdeps/generic/framestate.c | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/REORG.TODO/sysdeps/generic/framestate.c b/REORG.TODO/sysdeps/generic/framestate.c new file mode 100644 index 0000000000..c19d4b1ee4 --- /dev/null +++ b/REORG.TODO/sysdeps/generic/framestate.c @@ -0,0 +1,52 @@ +/* __frame_state_for unwinder helper function wrapper. + Copyright (C) 2001-2017 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); +} |