1/*
2 * AArch64-specific system calls implementation
3 *
4 * Copyright (C) 2012 ARM Ltd.
5 * Author: Catalin Marinas <catalin.marinas@arm.com>
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
18 */
19
20#include <linux/compiler.h>
21#include <linux/errno.h>
22#include <linux/fs.h>
23#include <linux/mm.h>
24#include <linux/export.h>
25#include <linux/sched.h>
26#include <linux/slab.h>
27#include <linux/syscalls.h>
28
29asmlinkage long sys_mmap(unsigned long addr, unsigned long len,
30			 unsigned long prot, unsigned long flags,
31			 unsigned long fd, off_t off)
32{
33	if (offset_in_page(off) != 0)
34		return -EINVAL;
35
36	return sys_mmap_pgoff(addr, len, prot, flags, fd, off >> PAGE_SHIFT);
37}
38
39/*
40 * Wrappers to pass the pt_regs argument.
41 */
42asmlinkage long sys_rt_sigreturn_wrapper(void);
43#define sys_rt_sigreturn	sys_rt_sigreturn_wrapper
44
45#undef __SYSCALL
46#define __SYSCALL(nr, sym)	[nr] = sym,
47
48/*
49 * The sys_call_table array must be 4K aligned to be accessible from
50 * kernel/entry.S.
51 */
52void * const sys_call_table[__NR_syscalls] __aligned(4096) = {
53	[0 ... __NR_syscalls - 1] = sys_ni_syscall,
54#include <asm/unistd.h>
55};
56