69 lines
1.9 KiB
ArmAsm
69 lines
1.9 KiB
ArmAsm
# Machine description for AArch64 architecture.
|
|
# Copyright (C) 2009-2020 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 creates a stack frame for the contents of the .fini and
|
|
# .init sections. Users may put any desired instructions in those
|
|
# sections.
|
|
|
|
#ifdef __ELF__
|
|
#define TYPE(x) .type x,function
|
|
#else
|
|
#define TYPE(x)
|
|
#endif
|
|
|
|
# Note - this macro is complemented by the FUNC_END macro
|
|
# in crtn.S. If you change this macro you must also change
|
|
# that macro match.
|
|
.macro FUNC_START
|
|
# Create a stack frame and save any call-preserved registers
|
|
stp x29, x30, [sp, #-16]!
|
|
stp x27, x28, [sp, #-16]!
|
|
stp x25, x26, [sp, #-16]!
|
|
stp x23, x24, [sp, #-16]!
|
|
stp x21, x22, [sp, #-16]!
|
|
stp x19, x20, [sp, #-16]!
|
|
.endm
|
|
|
|
.section ".init"
|
|
.align 2
|
|
.global _init
|
|
TYPE(_init)
|
|
_init:
|
|
FUNC_START
|
|
|
|
|
|
.section ".fini"
|
|
.align 2
|
|
.global _fini
|
|
TYPE(_fini)
|
|
_fini:
|
|
FUNC_START
|
|
|
|
# end of crti.S
|