1 # Machine description for AArch64 architecture.
2 # Copyright (C) 2009-2023 Free Software Foundation, Inc.
3 # Contributed by ARM Ltd.
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
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.
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.
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/>.
24 /* An executable stack is *not* required for these functions. */
25 #if defined(__ELF__) && defined(__linux__)
26 .section .note.GNU-stack,"",%progbits
30 # This file creates a stack frame for the contents of the .fini and
31 # .init sections. Users may put any desired instructions in those
35 #define TYPE(x) .type x,function
40 # Note - this macro is complemented by the FUNC_END macro
41 # in crtn.S. If you change this macro you must also change
44 # Create a stack frame and save any call-preserved registers
45 stp x29, x30, [sp, #-16]!
46 stp x27, x28, [sp, #-16]!
47 stp x25, x26, [sp, #-16]!
48 stp x23, x24, [sp, #-16]!
49 stp x21, x22, [sp, #-16]!
50 stp x19, x20, [sp, #-16]!