168 lines
2.9 KiB
C
168 lines
2.9 KiB
C
/* -*-comment-start: "//";comment-end:""-*-
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* GNU Mes --- Maxwell Equations of Software
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* Copyright © 2016,2017,2018,2022 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
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*
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* This file is part of GNU Mes.
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*
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* GNU Mes is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or (at
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* your option) any later version.
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*
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* GNU Mes is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GNU Mes. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <errno.h>
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#include <linux/aarch64/syscall.h>
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int errno;
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int
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__sys_call (int sys_call)
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{
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asm ("POP_X8");
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asm ("SYSCALL");
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}
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int
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__sys_call1 (int sys_call, int one)
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{
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asm ("POP_X0");
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asm ("POP_X8");
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asm ("SYSCALL");
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}
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int
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__sys_call2 (int sys_call, int one, int two)
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{
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asm ("POP_X1");
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asm ("POP_X0");
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asm ("POP_X8");
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asm ("SYSCALL");
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}
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int
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__sys_call3 (int sys_call, int one, int two, int three)
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{
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asm ("POP_X2");
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asm ("POP_X1");
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asm ("POP_X0");
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asm ("POP_X8");
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asm ("SYSCALL");
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}
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int
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__sys_call4 (int sys_call, int one, int two, int three, int four)
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{
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asm ("POP_X3");
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asm ("POP_X2");
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asm ("POP_X1");
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asm ("POP_X0");
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asm ("POP_X8");
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asm ("SYSCALL");
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}
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int
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__sys_call6 (int sys_call, int one, int two, int three, int four, int five, int six)
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{
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asm ("POP_X5");
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asm ("POP_X4");
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asm ("POP_X3");
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asm ("POP_X2");
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asm ("POP_X1");
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asm ("POP_X0");
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asm ("POP_X8");
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asm ("SYSCALL");
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}
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int
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_sys_call (int sys_call)
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{
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int r = __sys_call (sys_call);
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if (r < 0)
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{
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errno = -r;
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r = -1;
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}
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else
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errno = 0;
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return r;
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}
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int
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_sys_call1 (int sys_call, int one)
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{
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int r = __sys_call1 (sys_call, one);
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if (r < 0)
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{
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errno = -r;
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r = -1;
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}
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else
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errno = 0;
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return r;
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}
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int
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_sys_call2 (int sys_call, int one, int two)
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{
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int r = __sys_call2 (sys_call, one, two);
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if (r < 0)
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{
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errno = -r;
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r = -1;
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}
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else
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errno = 0;
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return r;
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}
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int
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_sys_call3 (int sys_call, int one, int two, int three)
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{
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int r = __sys_call3 (sys_call, one, two, three);
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if (r < 0)
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{
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errno = -r;
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r = -1;
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}
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else
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errno = 0;
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return r;
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}
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int
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_sys_call4 (int sys_call, int one, int two, int three, int four)
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{
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int r = __sys_call4 (sys_call, one, two, three, four);
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if (r < 0)
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{
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errno = -r;
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r = -1;
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}
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else
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errno = 0;
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return r;
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}
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int
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_sys_call6 (int sys_call, int one, int two, int three, int four, int five, int six)
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{
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int r = __sys_call6 (sys_call, one, two, three, four, five, six);
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if (r < 0)
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{
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errno = -r;
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r = -1;
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}
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else
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errno = 0;
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return r;
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}
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