source: trunk/kernel/syscalls/sys_utls.c @ 23

Last change on this file since 23 was 23, checked in by alain, 5 years ago

Introduce syscalls.

File size: 1.4 KB
RevLine 
[1]1/*
2 * kern/sys_utls.c - User Thread Local Storage
3 *
[23]4 * Author    Ghassan Almaless (2008,2009,2010,2011,2012)
5 *           Alain Greiner (2016,2017)
[1]6 *
[23]7 * Copyright (c) UPMC Sorbonne Universites
[1]8 *
[23]9 * This file is part of ALMOS-MKH.
10 *
11 * ALMOS-MKH is free software; you can redistribute it and/or modify it
[1]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 *
[23]15 * ALMOS-MKH is distributed in the hope that it will be useful, but
[1]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
[23]21 * along with ALMOS-MKH; if not, write to the Free Software Foundation,
[1]22 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
23 */
24
[23]25#include <hal_types.h>
[1]26#include <errno.h>
27#include <thread.h>
[23]28#include <printk.h>
29#include <syscalls.h>
[1]30
[23]31/////////////////////////////////
32int sys_utls( uint32_t operation,
33              uint32_t value )
[1]34{
[23]35    thread_t * this = CURRENT_THREAD;
[1]36 
37        switch(operation)
38        {
[23]39            case UTLS_SET:
40                this->utls = value;
[1]41                return 0;
42
[23]43            case UTLS_GET:
44                return this->utls;
[1]45
[23]46            case UTLS_GET_ERRNO:
47                return this->errno;
[1]48
[23]49            default:
50        printk("\n[ERROR] in %s : illegal utls operation\n", __FUNCTION__ );
51                this->errno = EINVAL;
[1]52                return -1;
53        }
[23]54
55}  // end sys_utls()
Note: See TracBrowser for help on using the repository browser.