mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-30 23:54:04 +08:00
4859bfca11
This patch adds files related to syscall. Signed-off-by: Guo Ren <ren_guo@c-sky.com> Reviewed-by: Arnd Bergmann <arnd@arndb.de>
44 lines
878 B
C
44 lines
878 B
C
// 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,
|
|
off_t, 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);
|
|
}
|