1/* Copyright (C) 2000-2022 Free Software Foundation, Inc.
2   This file is part of the GNU C Library.
3
4   The GNU C Library is free software; you can redistribute it and/or
5   modify it under the terms of the GNU Lesser General Public
6   License as published by the Free Software Foundation; either
7   version 2.1 of the License, or (at your option) any later version.
8
9   The GNU C Library is distributed in the hope that it will be useful,
10   but WITHOUT ANY WARRANTY; without even the implied warranty of
11   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
12   Lesser General Public License for more details.
13
14   You should have received a copy of the GNU Lesser General Public
15   License along with the GNU C Library; if not, see
16   <https://www.gnu.org/licenses/>.  */
17
18#include <sysdep.h>
19
20/* Please consult the file sysdeps/unix/sysv/linux/s390/sysdep.h for
21   more information about the value -4095 used below.*/
22
23ENTRY (syscall)
24	stm    %r6,%r7,24(%r15)    /* save registers */
25	cfi_offset (%r7, -68)
26	cfi_offset (%r6, -72)
27
28	lr     %r1,%r2             /* move syscall number */
29	lr     %r2,%r3             /* first parameter  */
30	lr     %r3,%r4             /* second parameter */
31	lr     %r4,%r5             /* third parameter  */
32	lr     %r5,%r6             /* fourth parameter */
33	lm     %r6,%r7,96(%r15)    /* fifth / sixth parameter  */
34	svc    0
35
36	lm     %r6,%r7,24(%r15)    /* load registers.  */
37
38	lhi    %r0,-4095
39	clr    %r2,%r0             /* check R2 for error */
40	jnl    SYSCALL_ERROR_LABEL
41	br     %r14                /* return to caller */
42PSEUDO_END (syscall)
43