// SPDX-License-Identifier: GPL-2.0// Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd. #include <linux/syscalls.h> SYSCALL_DEFINE1(set_thread_area, unsigned long, addr){	struct thread_info *ti = task_thread_info(current);	struct pt_regs *reg = current_pt_regs(); 	reg->tls = addr;	ti->tp_value = addr; 	return 0;} SYSCALL_DEFINE6(mmap2,	unsigned long, addr,	unsigned long, len,	unsigned long, prot,	unsigned long, flags,	unsigned long, fd,	unsigned long, offset){	if (unlikely(offset & (~PAGE_MASK >> 12)))		return -EINVAL; 	return ksys_mmap_pgoff(addr, len, prot, flags, fd,			       offset >> (PAGE_SHIFT - 12));} /* * for abiv1 the 64bits args should be even th, So we need mov the advice * forward. */SYSCALL_DEFINE4(csky_fadvise64_64,	int, fd,	int, advice,	loff_t, offset,	loff_t, len){	return ksys_fadvise64_64(fd, offset, len, advice);}