12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061 |
- # Machine description for AArch64 architecture.
- # Copyright (C) 2009-2022 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
|