syscall.c

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/*
 * arch/xtensa/kernel/syscall.c
 *
 * 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.
 *
 * Copyright (C) 2001 - 2005 Tensilica Inc.
 * Copyright (C) 2000 Silicon Graphics, Inc.
 * Copyright (C) 1995 - 2000 by Ralf Baechle
 *
 * Joe Taylor <[email protected], [email protected]>
 * Marc Gauthier <[email protected], [email protected]>
 * Chris Zankel <[email protected]>
 * Kevin Chea
 *
 */
#include <asm/uaccess.h>
#include <asm/syscall.h>
#include <asm/unistd.h>
#include <linux/linkage.h>
#include <linux/stringify.h>
#include <linux/errno.h>
#include <linux/syscalls.h>
#include <linux/file.h>
#include <linux/fs.h>
#include <linux/mman.h>
#include <linux/shm.h>

typedef void (*syscall_t)(void);

syscall_t sys_call_table[__NR_syscall_count] /* FIXME __cacheline_aligned */= {
    [0 ... __NR_syscall_count - 1] = (syscall_t)&sys_ni_syscall,

#define __SYSCALL(nr,symbol,nargs) [ nr ] = (syscall_t)symbol,
#include <uapi/asm/unistd.h>
};

asmlinkage long xtensa_shmat(int shmid, char __user *shmaddr, int shmflg)
{
    unsigned long ret;
    long err;

    err = do_shmat(shmid, shmaddr, shmflg, &ret, SHMLBA);
    if (err)
        return err;
    return (long)ret;
}

asmlinkage long xtensa_fadvise64_64(int fd, int advice,
        unsigned long long offset, unsigned long long len)
{
    return sys_fadvise64_64(fd, offset, len, advice);
}