2 * Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com)
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2 as
6 * published by the Free Software Foundation.
8 * Amit Bhor, Kanika Nema: Codito Technologies 2004
11 #include <linux/errno.h>
12 #include <linux/module.h>
13 #include <linux/sched.h>
16 #include <linux/unistd.h>
17 #include <linux/ptrace.h>
18 #include <linux/slab.h>
19 #include <linux/syscalls.h>
20 #include <linux/elf.h>
21 #include <linux/tick.h>
23 SYSCALL_DEFINE1(arc_settls, void *, user_tls_data_ptr)
25 task_thread_info(current)->thr_ptr = (unsigned int)user_tls_data_ptr;
30 * We return the user space TLS data ptr as sys-call return code
31 * Ideally it should be copy to user.
32 * However we can cheat by the fact that some sys-calls do return
33 * absurdly high values
34 * Since the tls dat aptr is not going to be in range of 0xFFFF_xxxx
35 * it won't be considered a sys-call error
36 * and it will be loads better than copy-to-user, which is a definite
39 SYSCALL_DEFINE0(arc_gettls)
41 return task_thread_info(current)->thr_ptr;