1 /* Support for ARM EABI unwinding in VxWorks Downloadable Kernel Modules. 2 Copyright (C) 2017-2019 Free Software Foundation, Inc. 3 4 This file is free software; you can redistribute it and/or modify it 5 under the terms of the GNU General Public License as published by the 6 Free Software Foundation; either version 3, or (at your option) any 7 later version. 8 9 This file is distributed in the hope that it will be useful, but 10 WITHOUT ANY WARRANTY; without even the implied warranty of 11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 12 General Public License for more details. 13 14 Under Section 7 of GPL version 3, you are granted additional 15 permissions described in the GCC Runtime Library Exception, version 16 3.1, as published by the Free Software Foundation. 17 18 You should have received a copy of the GNU General Public License and 19 a copy of the GCC Runtime Library Exception along with this program; 20 see the files COPYING3 and COPYING.RUNTIME respectively. If not, see 21 <http://www.gnu.org/licenses/>. */ 22 23 #if defined(__vxworks) && !defined (__RTP__) 24 /* Vxworks for ARM uses __gnu_Unwind_Find_exidx to retrieve the exception 25 table for downloadable kernel modules. As those modules are only partially 26 linked, the linker won't generate __exidx_start|end, but the two symbols 27 are still used in alternate paths from unwind-arm-common.inc. 28 29 As we don't rely on them, but still need the symbols, we define dummy 30 values here. */ 31 void *__exidx_start __attribute__((__visibility__ ("hidden"))); 32 void *__exidx_end __attribute__((__visibility__ ("hidden"))); 33 #endif 34