57 lines
		
	
	
	
		
			1.6 KiB
			
		
	
	
	
		
			C
		
	
	
	
	
	
		
		
			
		
	
	
			57 lines
		
	
	
	
		
			1.6 KiB
			
		
	
	
	
		
			C
		
	
	
	
	
	
|   | /*
 | ||
|  |  * 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>
 | ||
|  | #include <linux/errno.h>
 | ||
|  | #include <linux/fs.h>
 | ||
|  | #include <linux/mm.h>
 | ||
|  | #include <linux/export.h>
 | ||
|  | #include <linux/sched.h>
 | ||
|  | #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) | ||
|  | { | ||
|  | 	if (offset_in_page(off) != 0) | ||
|  | 		return -EINVAL; | ||
|  | 
 | ||
|  | 	return sys_mmap_pgoff(addr, len, prot, flags, fd, off >> PAGE_SHIFT); | ||
|  | } | ||
|  | 
 | ||
|  | /*
 | ||
|  |  * Wrappers to pass the pt_regs argument. | ||
|  |  */ | ||
|  | #define sys_rt_sigreturn	sys_rt_sigreturn_wrapper
 | ||
|  | 
 | ||
|  | #include <asm/syscalls.h>
 | ||
|  | 
 | ||
|  | #undef __SYSCALL
 | ||
|  | #define __SYSCALL(nr, sym)	[nr] = sym,
 | ||
|  | 
 | ||
|  | /*
 | ||
|  |  * 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>
 | ||
|  | }; |