Subversion Repositories HelenOS

Rev

Rev 1787 | Rev 2071 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed

Rev Author Line No. Line
52 vana 1
/*
92 jermar 2
 * Copyright (C) 2005 Jakub Vana
3
 * All rights reserved.
4
 *
5
 * Redistribution and use in source and binary forms, with or without
6
 * modification, are permitted provided that the following conditions
7
 * are met:
8
 *
9
 * - Redistributions of source code must retain the above copyright
10
 *   notice, this list of conditions and the following disclaimer.
11
 * - Redistributions in binary form must reproduce the above copyright
12
 *   notice, this list of conditions and the following disclaimer in the
13
 *   documentation and/or other materials provided with the distribution.
14
 * - The name of the author may not be used to endorse or promote products
15
 *   derived from this software without specific prior written permission.
16
 *
17
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
1702 cejka 27
 */
28
 
1882 jermar 29
/** @addtogroup mips32 
1702 cejka 30
 * @{
31
 */
32
/** @file
92 jermar 33
 *
34
 */
52 vana 35
 
36
#include <fpu_context.h>
326 palkovsky 37
#include <arch.h>
38
#include <arch/cp0.h>
546 palkovsky 39
#include <proc/thread.h>
52 vana 40
 
326 palkovsky 41
void fpu_disable(void)
42
{  
924 palkovsky 43
#ifdef ARCH_HAS_FPU
326 palkovsky 44
    cp0_status_write(cp0_status_read() & ~cp0_status_fpu_bit);
45
#endif
46
}
47
 
48
void fpu_enable(void)
52 vana 49
{
924 palkovsky 50
#ifdef ARCH_HAS_FPU
326 palkovsky 51
    cp0_status_write(cp0_status_read() | cp0_status_fpu_bit);
52
#endif
52 vana 53
}
54
 
906 palkovsky 55
void fpu_init()
52 vana 56
{
326 palkovsky 57
    /* TODO: Zero all registers */
52 vana 58
}
1702 cejka 59
 
1882 jermar 60
/** @}
1702 cejka 61
 */