| 1 | /*- |
| 2 | * Copyright (c) 2016-2024 Ruslan Bukin <br@bsdpad.com> |
| 3 | * All rights reserved. |
| 4 | * |
| 5 | * This software was developed by SRI International and the University of |
| 6 | * Cambridge Computer Laboratory under DARPA/AFRL contract FA8750-10-C-0237 |
| 7 | * ("CTSRD"), as part of the DARPA CRASH research programme. |
| 8 | * |
| 9 | * Redistribution and use in source and binary forms, with or without |
| 10 | * modification, are permitted provided that the following conditions |
| 11 | * are met: |
| 12 | * 1. Redistributions of source code must retain the above copyright |
| 13 | * notice, this list of conditions and the following disclaimer. |
| 14 | * 2. Redistributions in binary form must reproduce the above copyright |
| 15 | * notice, this list of conditions and the following disclaimer in the |
| 16 | * documentation and/or other materials provided with the distribution. |
| 17 | * |
| 18 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
| 19 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 20 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 21 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
| 22 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 23 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 24 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 25 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 26 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 27 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 28 | * SUCH DAMAGE. |
| 29 | */ |
| 30 | |
| 31 | #ifndef _MACHINE_FPE_H_ |
| 32 | #define _MACHINE_FPE_H_ |
| 33 | |
| 34 | void fpe_state_save(struct thread *td); |
| 35 | void fpe_state_clear(void); |
| 36 | |
| 37 | struct fpreg *fpu_save_area_alloc(void); |
| 38 | void fpu_save_area_free(struct fpreg *fsa); |
| 39 | void fpu_save_area_reset(struct fpreg *fsa); |
| 40 | |
| 41 | void fpe_enable(void); |
| 42 | void fpe_disable(void); |
| 43 | |
| 44 | void fpe_store(struct fpreg *state); |
| 45 | void fpe_restore(struct fpreg *state); |
| 46 | |
| 47 | #endif /* !_MACHINE_FPE_H_ */ |