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}

 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}