LXR linux/arch/hexagon/include/asm/syscall.h

   1/*
   2 * Syscall support for the Hexagon architecture
   3 *
   4 * Copyright (c) 2010-2011, The Linux Foundation. All rights reserved.
   5 *
   6 * This program is free software; you can redistribute it and/or modify
   7 * it under the terms of the GNU General Public License version 2 and
   8 * only version 2 as published by the Free Software Foundation.
   9 *
  10 * This program is distributed in the hope that it will be useful,
  11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 * GNU General Public License for more details.
  14 *
  15 * You should have received a copy of the GNU General Public License
  16 * along with this program; if not, write to the Free Software
  17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  18 * 02110-1301, USA.
  19 */
  20
  21#ifndef _ASM_HEXAGON_SYSCALL_H
  22#define _ASM_HEXAGON_SYSCALL_H
  23
  24typedef long (*syscall_fn)(unsigned long, unsigned long,
  25        unsigned long, unsigned long,
  26        unsigned long, unsigned long);
  27
  28#include <asm-generic/syscalls.h>
  29
  30extern void *sys_call_table[];
  31
  32static inline long syscall_get_nr(struct task_struct *task,
  33                                  struct pt_regs *regs)
  34{
  35        return regs->r06;
  36}
  37
  38static inline void syscall_get_arguments(struct task_struct *task,
  39                                         struct pt_regs *regs,
  40                                         unsigned int i, unsigned int n,
  41                                         unsigned long *args)
  42{
  43        BUG_ON(i + n > 6);
  44        memcpy(args, &(&regs->r00)[i], n * sizeof(args[0]));
  45}
  46#endif
  47