LXR linux/arch/csky/kernel/syscall.c

   1// SPDX-License-Identifier: GPL-2.0
   2// Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd.
   3
   4#include <linux/syscalls.h>
   5
   6SYSCALL_DEFINE1(set_thread_area, unsigned long, addr)
   7{
   8        struct thread_info *ti = task_thread_info(current);
   9        struct pt_regs *reg = current_pt_regs();
  10
  11        reg->tls = addr;
  12        ti->tp_value = addr;
  13
  14        return 0;
  15}
  16
  17SYSCALL_DEFINE6(mmap2,
  18        unsigned long, addr,
  19        unsigned long, len,
  20        unsigned long, prot,
  21        unsigned long, flags,
  22        unsigned long, fd,
  23        off_t, offset)
  24{
  25        if (unlikely(offset & (~PAGE_MASK >> 12)))
  26                return -EINVAL;
  27
  28        return ksys_mmap_pgoff(addr, len, prot, flags, fd,
  29                               offset >> (PAGE_SHIFT - 12));
  30}
  31
  32/*
  33 * for abiv1 the 64bits args should be even th, So we need mov the advice
  34 * forward.
  35 */
  36SYSCALL_DEFINE4(csky_fadvise64_64,
  37        int, fd,
  38        int, advice,
  39        loff_t, offset,
  40        loff_t, len)
  41{
  42        return ksys_fadvise64_64(fd, offset, len, advice);
  43}
  44