Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) // Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4) #include <linux/syscalls.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6) SYSCALL_DEFINE1(set_thread_area, unsigned long, addr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) 	struct thread_info *ti = task_thread_info(current);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) 	struct pt_regs *reg = current_pt_regs();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) 	reg->tls = addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) 	ti->tp_value = addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) SYSCALL_DEFINE6(mmap2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) 	unsigned long, addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) 	unsigned long, len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) 	unsigned long, prot,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 	unsigned long, flags,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 	unsigned long, fd,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 	off_t, offset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 	if (unlikely(offset & (~PAGE_MASK >> 12)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 	return ksys_mmap_pgoff(addr, len, prot, flags, fd,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 			       offset >> (PAGE_SHIFT - 12));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33)  * for abiv1 the 64bits args should be even th, So we need mov the advice
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34)  * forward.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) SYSCALL_DEFINE4(csky_fadvise64_64,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 	int, fd,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 	int, advice,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 	loff_t, offset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 	loff_t, len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) 	return ksys_fadvise64_64(fd, offset, len, advice);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) }