2 * AArch64-specific system calls implementation
4 * Copyright (C) 2012 ARM Ltd.
5 * Author: Catalin Marinas <catalin.marinas@arm.com>
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.
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.
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/>.
20 #include <linux/compiler.h>
21 #include <linux/errno.h>
24 #include <linux/export.h>
25 #include <linux/sched.h>
26 #include <linux/slab.h>
27 #include <linux/syscalls.h>
30 * Clone a task - this clones the calling program thread.
32 asmlinkage long sys_clone(unsigned long clone_flags, unsigned long newsp,
33 int __user *parent_tidptr, unsigned long tls_val,
34 int __user *child_tidptr)
36 return do_fork(clone_flags, newsp, current_pt_regs(), 0,
37 parent_tidptr, child_tidptr);
40 asmlinkage long sys_mmap(unsigned long addr, unsigned long len,
41 unsigned long prot, unsigned long flags,
42 unsigned long fd, off_t off)
44 if (offset_in_page(off) != 0)
47 return sys_mmap_pgoff(addr, len, prot, flags, fd, off >> PAGE_SHIFT);
51 * Wrappers to pass the pt_regs argument.
53 #define sys_rt_sigreturn sys_rt_sigreturn_wrapper
54 #define sys_sigaltstack sys_sigaltstack_wrapper
56 #include <asm/syscalls.h>
59 #define __SYSCALL(nr, sym) [nr] = sym,
62 * The sys_call_table array must be 4K aligned to be accessible from
65 void *sys_call_table[__NR_syscalls] __aligned(4096) = {
66 [0 ... __NR_syscalls - 1] = sys_ni_syscall,
67 #include <asm/unistd.h>