# Machine description for AArch64 architecture. # Copyright (C) 2009-2018 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 # . /* 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