| # Machine description for AArch64 architecture. |
| # Copyright (C) 2009-2015 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 |