arch/microblaze/kernel/sys_microblaze.c

/*
 * Copyright (C) 2007-2009 Michal Simek <monstr@monstr.eu>
 * Copyright (C) 2007-2009 PetaLogix
 * Copyright (C) 2007 John Williams <john.williams@petalogix.com>
 *
 * Copyright (C) 2006 Atmark Techno, Inc.
 *	Yasushi SHOJI <yashi@atmark-techno.com>
 *	Tetsuya OHKAWA <tetsuya@atmark-techno.com>
 *
 * This file is subject to the terms and conditions of the GNU General Public
 * License. See the file "COPYING" in the main directory of this archive
 * for more details.
 */

#include <linux/errno.h>
#include <linux/mm.h>
#include <linux/smp.h>
#include <linux/syscalls.h>
#include <linux/sem.h>
#include <linux/msg.h>
#include <linux/shm.h>
#include <linux/stat.h>
#include <linux/mman.h>
#include <linux/sys.h>
#include <linux/ipc.h>
#include <linux/file.h>
#include <linux/module.h>
#include <linux/err.h>
#include <linux/fs.h>
#include <linux/semaphore.h>
#include <linux/uaccess.h>
#include <linux/unistd.h>
#include <linux/slab.h>

#include <asm/syscalls.h>

asmlinkage long microblaze_vfork(struct pt_regs *regs)
{
	return do_fork(CLONE_VFORK | CLONE_VM | SIGCHLD, regs->r1,
						regs, 0, NULL, NULL);
}

asmlinkage long microblaze_clone(int flags, unsigned long stack,
							struct pt_regs *regs)
{
	if (!stack)
		stack = regs->r1;
	return do_fork(flags, stack, regs, 0, NULL, NULL);
}

asmlinkage long microblaze_execve(const char __user *filenamei,
				  const char __user *const __user *argv,
				  const char __user *const __user *envp,
				  struct pt_regs *regs)
{
	int error;
	struct filename *filename;

	filename = getname(filenamei);
	error = PTR_ERR(filename);
	if (IS_ERR(filename))
		goto out;
	error = do_execve(filename->name, argv, envp, regs);
	putname(filename);
out:
	return error;
}

asmlinkage long sys_mmap(unsigned long addr, unsigned long len,
			unsigned long prot, unsigned long flags,
			unsigned long fd, off_t pgoff)
{
	if (pgoff & ~PAGE_MASK)
		return -EINVAL;

	return sys_mmap_pgoff(addr, len, prot, flags, fd, pgoff >> PAGE_SHIFT);
}