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 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