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
sys_mmap(unsigned long addr,unsigned long len,unsigned long prot,unsigned long flags,unsigned long fd,off_t off)29 asmlinkage 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 */
42 asmlinkage 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 */
52 void * const sys_call_table[__NR_syscalls] __aligned(4096) = {
53 [0 ... __NR_syscalls - 1] = sys_ni_syscall,
54 #include <asm/unistd.h>
55 };
56