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