source: trunk/kernel/syscalls/sys_utls.c @ 459

Last change on this file since 459 was 457, checked in by alain, 3 years ago

This version modifies the exec syscall and fixes a large number of small bugs.
The version number has been updated (0.1)

File size: 1.4 KB
Line 
1/*
2 * kern/sys_utls.c - User Thread Local Storage
3 *
4 * Author    Ghassan Almaless (2008,2009,2010,2011,2012)
5 *           Alain Greiner (2016,2017)
6 *
7 * Copyright (c) UPMC Sorbonne Universites
8 *
9 * This file is part of ALMOS-MKH.
10 *
11 * ALMOS-MKH is free software; you can redistribute it and/or modify it
12 * under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; version 2.0 of the License.
14 *
15 * ALMOS-MKH is distributed in the hope that it will be useful, but
16 * WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
18 * General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with ALMOS-MKH; if not, write to the Free Software Foundation,
22 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
23 */
24
25#include <hal_kernel_types.h>
26#include <errno.h>
27#include <thread.h>
28#include <printk.h>
29#include <syscalls.h>
30
31/////////////////////////////////
32int sys_utls( uint32_t operation,
33              uint32_t value )
34{
35    thread_t * this = CURRENT_THREAD;
36 
37        switch(operation)
38        {
39            case UTLS_SET:
40                this->utls = value;
41                return 0;
42
43            case UTLS_GET:
44                return this->utls;
45
46            case UTLS_GET_ERRNO:
47                return this->errno;
48
49            default:
50        printk("\n[ERROR] in %s : illegal utls operation\n", __FUNCTION__ );
51                this->errno = EINVAL;
52                return -1;
53        }
54
55}  // end sys_utls()
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