# Machine description for AArch64 architecture. # Copyright (C) 2009-2017 Free Software Foundation, Inc. # Contributed by ARM Ltd. # # 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/>. /* An executable stack is *not* required for these functions. */ #if defined(__ELF__) && defined(__linux__) .section .note.GNU-stack,"",%progbits .previous #endif # This file just makes sure that the .fini and .init sections do in # fact return. Users may put any desired instructions in those sections. # This file is the last thing linked into any executable. # Note - this macro is complemented by the FUNC_START macro # in crti.S. If you change this macro you must also change # that macro match. # # Note - we do not try any fancy optimizations of the return # sequences here, it is just not worth it. Instead keep things # simple. Restore all the save resgisters, including the link # register and then perform the correct function return instruction. .macro FUNC_END ldp x19, x20, [sp], #16 ldp x21, x22, [sp], #16 ldp x23, x24, [sp], #16 ldp x25, x26, [sp], #16 ldp x27, x28, [sp], #16 ldp x29, x30, [sp], #16 ret .endm .section ".init" ;; FUNC_END .section ".fini" ;; FUNC_END # end of crtn.S |