1/* syscall - indirect system call.
2   Copyright (C) 2005-2022 Free Software Foundation, Inc.
3   This file is part of the GNU C Library.
4
5   The GNU C Library is free software; you can redistribute it and/or
6   modify it under the terms of the GNU Lesser General Public
7   License as published by the Free Software Foundation; either
8   version 2.1 of the License, or (at your option) any later version.
9
10   The GNU C Library is distributed in the hope that it will be useful,
11   but WITHOUT ANY WARRANTY; without even the implied warranty of
12   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13   Lesser General Public License for more details.
14
15   You should have received a copy of the GNU Lesser General Public
16   License along with the GNU C Library; if not, see
17   <https://www.gnu.org/licenses/>.  */
18
19#include <sysdep.h>
20
21/* We don't need a special syscall to implement syscall().  It won't work
22   reliably with 64-bit arguments (but that is true on many modern platforms).
23*/
24
25ENTRY (syscall)
26	mov	r2, r4
27	mov	r4, r5
28	mov	r5, r6
29	mov	r6, r7
30	ldw	r7, 0(sp)
31	ldw	r8, 4(sp)
32	ldw	r9, 8(sp)
33	trap
34	bne	r7, zero, SYSCALL_ERROR_LABEL
35        ret
36PSEUDO_END (syscall)
37