1/* Copyright (C) 1993-2022 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#ifndef SYS_syscall
21#define SYS_syscall 0
22#endif
23
24/* This works if the kernel does an "indirect system call" for system call 0,
25 taking the first argument word off the stack as the system call number. */
26
27SYSCALL (syscall, 1)
28 ret
29PSEUDO_END(syscall)
30

source code of glibc/sysdeps/unix/syscall.S