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