mes/lib/linux/aarch64-mes-m2/_exit.c

33 lines
1.1 KiB
C

/* -*-comment-start: "//";comment-end:""-*-
* GNU Mes --- Maxwell Equations of Software
* Copyright © 2016,2017,2020,2022 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
* Copyright © 2020 Danny Milosavljevic <dannym@scratchpost.org>
*
* This file is part of GNU Mes.
*
* GNU Mes 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 of the License, or (at
* your option) any later version.
*
* GNU Mes 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 GNU Mes. If not, see <http://www.gnu.org/licenses/>.
*/
void
_exit ()
{
/* We're pretending to be x86 now, so I guess we get args from the stack
Use the weird calling convention m2libc uses */
asm ("SET_X0_FROM_BP");
asm ("SUB_X0_8");
asm ("DEREF_X0");
asm ("SET_X8_TO_SYS_EXIT");
asm ("SYSCALL");
}