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>
29 #include <asm/cpufeature.h>
30 #include <asm/syscall.h>
32 SYSCALL_DEFINE6(mmap, unsigned long, addr, unsigned long, len,
33 unsigned long, prot, unsigned long, flags,
34 unsigned long, fd, unsigned long, off)
36 if (offset_in_page(off) != 0)
39 return ksys_mmap_pgoff(addr, len, prot, flags, fd, off >> PAGE_SHIFT);
42 SYSCALL_DEFINE1(arm64_personality, unsigned int, personality)
44 if (personality(personality) == PER_LINUX32 &&
45 !system_supports_32bit_el0())
47 return ksys_personality(personality);
50 asmlinkage long sys_ni_syscall(void);
52 asmlinkage long __arm64_sys_ni_syscall(const struct pt_regs *__unused)
54 return sys_ni_syscall();
58 * Wrappers to pass the pt_regs argument.
60 #define __arm64_sys_personality __arm64_sys_arm64_personality
63 #define __SYSCALL(nr, sym) asmlinkage long __arm64_##sym(const struct pt_regs *);
64 #include <asm/unistd.h>
67 #define __SYSCALL(nr, sym) [nr] = __arm64_##sym,
69 const syscall_fn_t sys_call_table[__NR_syscalls] = {
70 [0 ... __NR_syscalls - 1] = __arm64_sys_ni_syscall,
71 #include <asm/unistd.h>