1 | // SPDX-License-Identifier: GPL-2.0 |
2 | // Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd. |
3 | |
4 | #include <linux/syscalls.h> |
5 | |
6 | SYSCALL_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 | |
17 | SYSCALL_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 | pgoff: 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 | */ |
36 | SYSCALL_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 | |