arch/unicore32/kernel/sys.c

   1 /*
   2  * linux/arch/unicore32/kernel/sys.c
   3  *
   4  * Code specific to PKUnity SoC and UniCore ISA
   5  *
   6  * Copyright (C) 2001-2010 GUAN Xue-tao
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 as
  10  * published by the Free Software Foundation.
  11  */
  12 #include <linux/module.h>
  13 #include <linux/errno.h>
  14 #include <linux/sched.h>
  15 #include <linux/slab.h>
  16 #include <linux/mm.h>
  17 #include <linux/sem.h>
  18 #include <linux/msg.h>
  19 #include <linux/shm.h>
  20 #include <linux/stat.h>
  21 #include <linux/syscalls.h>
  22 #include <linux/mman.h>
  23 #include <linux/fs.h>
  24 #include <linux/file.h>
  25 #include <linux/ipc.h>
  26 #include <linux/uaccess.h>
  27
  28 #include <asm/syscalls.h>
  29 #include <asm/cacheflush.h>
  30
  31 /* Clone a task - this clones the calling program thread.
  32  * This is called indirectly via a small wrapper
  33  */
  34 asmlinkage long __sys_clone(unsigned long clone_flags, unsigned long newsp,
  35                          void __user *parent_tid, void __user *child_tid,
  36                          struct pt_regs *regs)
  37 {
  38         if (!newsp)
  39                 newsp = regs->UCreg_sp;
  40
  41         return do_fork(clone_flags, newsp, regs, 0,
  42                         parent_tid, child_tid);
  43 }
  44
  45 /* Note: used by the compat code even in 64-bit Linux. */
  46 SYSCALL_DEFINE6(mmap2, unsigned long, addr, unsigned long, len,
  47                 unsigned long, prot, unsigned long, flags,
  48                 unsigned long, fd, unsigned long, off_4k)
  49 {
  50         return sys_mmap_pgoff(addr, len, prot, flags, fd,
  51                               off_4k);
  52 }
  53
  54 /* Provide the actual syscall number to call mapping. */
  55 #undef __SYSCALL
  56 #define __SYSCALL(nr, call)     [nr] = (call),
  57
  58 /* Note that we don't include <linux/unistd.h> but <asm/unistd.h> */
  59 void *sys_call_table[__NR_syscalls] = {
  60         [0 ... __NR_syscalls-1] = sys_ni_syscall,
  61 #include <asm/unistd.h>
  62 };