mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-02 09:40:13 +00:00
48 lines
1.7 KiB
C
48 lines
1.7 KiB
C
|
/* __frame_state_for unwinder helper function wrapper.
|
||
|
|
Copyright (C) 2001 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, write to the Free
|
||
|
|
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
||
|
|
02111-1307 USA. */
|
||
|
|
|
||
|
|
#include <dlfcn.h>
|
||
|
|
#include <stdlib.h>
|
||
|
|
#define __frame_state_for fallback_frame_state_for
|
||
|
|
#include <unwind-dw2.c>
|
||
|
|
#undef __frame_state_for
|
||
|
|
|
||
|
|
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.1");
|
||
|
|
|
||
|
|
if (handle == NULL
|
||
|
|
|| (frame_state_for
|
||
|
|
= (framesf) __libc_dlsym (handle, "__frame_state_for")) == NULL)
|
||
|
|
frame_state_for = fallback_frame_state_for;
|
||
|
|
}
|
||
|
|
|
||
|
|
return frame_state_for (pc, frame_state);
|
||
|
|
}
|