73 lines
2 KiB
C
73 lines
2 KiB
C
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/*
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* AArch64-specific system calls implementation
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*
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* Copyright (C) 2012 ARM Ltd.
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* Author: Catalin Marinas <catalin.marinas@arm.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <linux/compiler.h>
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#include <linux/errno.h>
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#include <linux/fs.h>
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#include <linux/mm.h>
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#include <linux/export.h>
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#include <linux/sched.h>
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#include <linux/slab.h>
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#include <linux/syscalls.h>
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#include <asm/cpufeature.h>
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#include <asm/syscall.h>
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SYSCALL_DEFINE6(mmap, unsigned long, addr, unsigned long, len,
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unsigned long, prot, unsigned long, flags,
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unsigned long, fd, unsigned long, off)
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{
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if (offset_in_page(off) != 0)
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return -EINVAL;
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return ksys_mmap_pgoff(addr, len, prot, flags, fd, off >> PAGE_SHIFT);
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}
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SYSCALL_DEFINE1(arm64_personality, unsigned int, personality)
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{
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if (personality(personality) == PER_LINUX32 &&
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!system_supports_32bit_el0())
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return -EINVAL;
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return ksys_personality(personality);
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}
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asmlinkage long sys_ni_syscall(void);
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asmlinkage long __arm64_sys_ni_syscall(const struct pt_regs *__unused)
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{
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return sys_ni_syscall();
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}
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/*
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* Wrappers to pass the pt_regs argument.
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*/
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#define __arm64_sys_personality __arm64_sys_arm64_personality
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#undef __SYSCALL
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#define __SYSCALL(nr, sym) asmlinkage long __arm64_##sym(const struct pt_regs *);
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#include <asm/unistd.h>
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#undef __SYSCALL
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#define __SYSCALL(nr, sym) [nr] = __arm64_##sym,
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const syscall_fn_t sys_call_table[__NR_syscalls] = {
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[0 ... __NR_syscalls - 1] = __arm64_sys_ni_syscall,
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#include <asm/unistd.h>
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};
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