projects / thirdparty / gcc.git / blame
| Commit | Line | Data |
|---|---|---|
| d507e9a3 | 1 | # Machine description for AArch64 architecture. |
| a945c346 | 2 | # Copyright (C) 2009-2024 Free Software Foundation, Inc. |
| d507e9a3 MS |
3 | # Contributed by ARM Ltd. |
| 4 | # | |
| 5 | # This file is free software; you can redistribute it and/or modify it | |
| 6 | # under the terms of the GNU General Public License as published by the | |
| 7 | # Free Software Foundation; either version 3, or (at your option) any | |
| 8 | # later version. | |
| 9 | # | |
| 10 | # This file is distributed in the hope that it will be useful, but | |
| 11 | # WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 13 | # General Public License for more details. | |
| 14 | # | |
| 15 | # Under Section 7 of GPL version 3, you are granted additional | |
| 16 | # permissions described in the GCC Runtime Library Exception, version | |
| 17 | # 3.1, as published by the Free Software Foundation. | |
| 18 | # | |
| 19 | # You should have received a copy of the GNU General Public License and | |
| 20 | # a copy of the GCC Runtime Library Exception along with this program; | |
| 21 | # see the files COPYING3 and COPYING.RUNTIME respectively. If not, see | |
| 22 | # <http://www.gnu.org/licenses/>. | |
| 23 | ||
| 24 | /* An executable stack is *not* required for these functions. */ | |
| 25 | #if defined(__ELF__) && defined(__linux__) | |
| 26 | .section .note.GNU-stack,"",%progbits | |
| 27 | .previous | |
| 28 | #endif | |
| 29 | ||
| 30 | # This file just makes sure that the .fini and .init sections do in | |
| 31 | # fact return. Users may put any desired instructions in those sections. | |
| 32 | # This file is the last thing linked into any executable. | |
| 33 | ||
| 34 | # Note - this macro is complemented by the FUNC_START macro | |
| 35 | # in crti.S. If you change this macro you must also change | |
| 36 | # that macro match. | |
| 37 | # | |
| 38 | # Note - we do not try any fancy optimizations of the return | |
| 39 | # sequences here, it is just not worth it. Instead keep things | |
| 40 | # simple. Restore all the save resgisters, including the link | |
| 41 | # register and then perform the correct function return instruction. | |
| 42 | .macro FUNC_END | |
| 43 | ldp x19, x20, [sp], #16 | |
| 44 | ldp x21, x22, [sp], #16 | |
| 45 | ldp x23, x24, [sp], #16 | |
| 46 | ldp x25, x26, [sp], #16 | |
| 47 | ldp x27, x28, [sp], #16 | |
| 48 | ldp x29, x30, [sp], #16 | |
| 49 | ret | |
| 50 | .endm | |
| 51 | ||
| 52 | ||
| 53 | .section ".init" | |
| 54 | ;; | |
| 55 | FUNC_END | |
| 56 | ||
| 57 | .section ".fini" | |
| 58 | ;; | |
| 59 | FUNC_END | |
| 60 | ||
| 61 | # end of crtn.S |