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53 lines
1.7 KiB
C
53 lines
1.7 KiB
C
/* __frame_state_for unwinder helper function wrapper.
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Copyright (C) 2001-2020 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Jakub Jelinek <jakub@redhat.com>, 2001.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <dlfcn.h>
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#include <stdlib.h>
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#define STATIC static
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#define __frame_state_for fallback_frame_state_for
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#include <unwind-dw2.c>
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#undef __frame_state_for
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#include <gnu/lib-names.h>
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typedef struct frame_state * (*framesf)(void *pc, struct frame_state *);
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struct frame_state *__frame_state_for (void *pc,
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struct frame_state *frame_state);
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struct frame_state *
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__frame_state_for (void *pc, struct frame_state *frame_state)
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{
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static framesf frame_state_for;
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if (frame_state_for == NULL)
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{
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void *handle = __libc_dlopen (LIBGCC_S_SO);
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if (handle == NULL
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|| (frame_state_for
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= (framesf) __libc_dlsym (handle, "__frame_state_for")) == NULL)
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#ifndef __USING_SJLJ_EXCEPTIONS__
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frame_state_for = fallback_frame_state_for;
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#else
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frame_state_for = abort;
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#endif
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}
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return frame_state_for (pc, frame_state);
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}
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