Retro68/gcc/libgcc/config/arm/unwind-arm-vxworks.c
Wolfgang Thaller 6fbf4226da gcc-9.1
2019-06-20 20:10:10 +02:00

34 lines
1.6 KiB
C

/* Support for ARM EABI unwinding in VxWorks Downloadable Kernel Modules.
Copyright (C) 2017-2019 Free Software Foundation, Inc.
This file is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
Free Software Foundation; either version 3, or (at your option) any
later version.
This file 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
General Public License for more details.
Under Section 7 of GPL version 3, you are granted additional
permissions described in the GCC Runtime Library Exception, version
3.1, as published by the Free Software Foundation.
You should have received a copy of the GNU General Public License and
a copy of the GCC Runtime Library Exception along with this program;
see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
<http://www.gnu.org/licenses/>. */
#if defined(__vxworks) && !defined (__RTP__)
/* Vxworks for ARM uses __gnu_Unwind_Find_exidx to retrieve the exception
table for downloadable kernel modules. As those modules are only partially
linked, the linker won't generate __exidx_start|end, but the two symbols
are still used in alternate paths from unwind-arm-common.inc.
As we don't rely on them, but still need the symbols, we define dummy
values here. */
void *__exidx_start __attribute__((__visibility__ ("hidden")));
void *__exidx_end __attribute__((__visibility__ ("hidden")));
#endif