diff options
Diffstat (limited to 'arch/arm64/kernel/sys.c')
| -rw-r--r-- | arch/arm64/kernel/sys.c | 59 |
1 files changed, 33 insertions, 26 deletions
diff --git a/arch/arm64/kernel/sys.c b/arch/arm64/kernel/sys.c index 3fa98ff14f0e..f08408b6e826 100644 --- a/arch/arm64/kernel/sys.c +++ b/arch/arm64/kernel/sys.c @@ -1,20 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * AArch64-specific system calls implementation * * Copyright (C) 2012 ARM Ltd. * Author: Catalin Marinas <catalin.marinas@arm.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see <http://www.gnu.org/licenses/>. */ #include <linux/compiler.h> @@ -26,31 +15,49 @@ #include <linux/slab.h> #include <linux/syscalls.h> -asmlinkage long sys_mmap(unsigned long addr, unsigned long len, - unsigned long prot, unsigned long flags, - unsigned long fd, off_t off) +#include <asm/cpufeature.h> +#include <asm/syscall.h> + +SYSCALL_DEFINE6(mmap, unsigned long, addr, unsigned long, len, + unsigned long, prot, unsigned long, flags, + unsigned long, fd, unsigned long, off) { if (offset_in_page(off) != 0) return -EINVAL; - return sys_mmap_pgoff(addr, len, prot, flags, fd, off >> PAGE_SHIFT); + return ksys_mmap_pgoff(addr, len, prot, flags, fd, off >> PAGE_SHIFT); +} + +SYSCALL_DEFINE1(arm64_personality, unsigned int, personality) +{ + if (personality(personality) == PER_LINUX32 && + !system_supports_32bit_el0()) + return -EINVAL; + return ksys_personality(personality); +} + +asmlinkage long sys_ni_syscall(void); + +asmlinkage long __arm64_sys_ni_syscall(const struct pt_regs *__unused) +{ + return sys_ni_syscall(); } /* * Wrappers to pass the pt_regs argument. */ -#define sys_rt_sigreturn sys_rt_sigreturn_wrapper +#define __arm64_sys_personality __arm64_sys_arm64_personality -#include <asm/syscalls.h> +#define __SYSCALL_WITH_COMPAT(nr, native, compat) __SYSCALL(nr, native) #undef __SYSCALL -#define __SYSCALL(nr, sym) [nr] = sym, +#define __SYSCALL(nr, sym) asmlinkage long __arm64_##sym(const struct pt_regs *); +#include <asm/syscall_table_64.h> -/* - * The sys_call_table array must be 4K aligned to be accessible from - * kernel/entry.S. - */ -void *sys_call_table[__NR_syscalls] __aligned(4096) = { - [0 ... __NR_syscalls - 1] = sys_ni_syscall, -#include <asm/unistd.h> +#undef __SYSCALL +#define __SYSCALL(nr, sym) [nr] = __arm64_##sym, + +const syscall_fn_t sys_call_table[__NR_syscalls] = { + [0 ... __NR_syscalls - 1] = __arm64_sys_ni_syscall, +#include <asm/syscall_table_64.h> }; |