cosmopolitan/libc/runtime/destruct.S

46 lines
2.3 KiB
ArmAsm

/*-*- mode:unix-assembly; indent-tabs-mode:t; tab-width:8; coding:utf-8 -*-│
vi: set et ft=asm ts=8 tw=8 fenc=utf-8 :vi
Copyright 2020 Justine Alexandra Roberts Tunney
This program 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; version 2 of the License. │
This program 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.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software │
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301 USA
*/
#include "libc/macros.h"
.text.exit
.source __FILE__
/ Calls linker registered finalization functions.
/ @note functions are called in reverse order
_destruct:
push %rbp
mov %rsp,%rbp
ezlea __fini_array_start,cx
.weak __fini_array_start
ezlea __fini_array_end,ax
.weak __fini_array_end
cmp %rax,%rcx
je 2f
1: sub $8,%rax
push %rax
push %rcx
call *(%rax)
pop %rcx
pop %rax
cmp %rax,%rcx
jne 1b
2: pop %rbp
ret
.endfn _destruct,globl