| | 1 | /* |
| | 2 | * Copyright (c) 2000-2010 Apple Inc. All rights reserved. |
| | 3 | * |
| | 4 | * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ |
| | 5 | * |
| | 6 | * This file contains Original Code and/or Modifications of Original Code |
| | 7 | * as defined in and that are subject to the Apple Public Source License |
| | 8 | * Version 2.0 (the 'License'). You may not use this file except in |
| | 9 | * compliance with the License. The rights granted to you under the License |
| | 10 | * may not be used to create, or enable the creation or redistribution of, |
| | 11 | * unlawful or unlicensed copies of an Apple operating system, or to |
| | 12 | * circumvent, violate, or enable the circumvention or violation of, any |
| | 13 | * terms of an Apple operating system software license agreement. |
| | 14 | * |
| | 15 | * Please obtain a copy of the License at |
| | 16 | * http://www.opensource.apple.com/apsl/ and read it before using this file. |
| | 17 | * |
| | 18 | * The Original Code and all software distributed under the License are |
| | 19 | * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER |
| | 20 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, |
| | 21 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, |
| | 22 | * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. |
| | 23 | * Please see the License for the specific language governing rights and |
| | 24 | * limitations under the License. |
| | 25 | * |
| | 26 | * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ |
| | 27 | */ |
| | 28 | /* |
| | 29 | * @OSF_COPYRIGHT@ |
| | 30 | */ |
| | 31 | /* |
| | 32 | * Mach Operating System |
| | 33 | * Copyright (c) 1991 Carnegie Mellon University |
| | 34 | * All Rights Reserved. |
| | 35 | * |
| | 36 | * Permission to use, copy, modify and distribute this software and its |
| | 37 | * documentation is hereby granted, provided that both the copyright |
| | 38 | * notice and this permission notice appear in all copies of the |
| | 39 | * software, derivative works or modified versions, and any portions |
| | 40 | * thereof, and that both notices appear in supporting documentation. |
| | 41 | * |
| | 42 | * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" |
| | 43 | * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR |
| | 44 | * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. |
| | 45 | * |
| | 46 | * Carnegie Mellon requests users of this software to return to |
| | 47 | * |
| | 48 | * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU |
| | 49 | * School of Computer Science |
| | 50 | * Carnegie Mellon University |
| | 51 | * Pittsburgh PA 15213-3890 |
| | 52 | * |
| | 53 | * any improvements or extensions that they make and grant Carnegie Mellon |
| | 54 | * the rights to redistribute these changes. |
| | 55 | */ |
| | 56 | |
| | 57 | #ifndef _I386_FPU_H_ |
| | 58 | #define _I386_FPU_H_ |
| | 59 | |
| | 60 | /* |
| | 61 | * Macro definitions for routines to manipulate the |
| | 62 | * floating-point processor. |
| | 63 | */ |
| | 64 | #include <kern/thread.h> |
| | 65 | #include <kern/kern_types.h> |
| | 66 | #include <mach/i386/kern_return.h> |
| | 67 | #include <mach/i386/thread_status.h> |
| | 68 | #include <i386/proc_reg.h> |
| | 69 | #include <i386/thread.h> |
| | 70 | |
| | 71 | typedef enum { |
| | 72 | FXSAVE32 = 1, |
| | 73 | FXSAVE64 = 2, |
| | 74 | XSAVE32 = 3, |
| | 75 | XSAVE64 = 4, |
| | 76 | FP_UNUSED = 5 |
| | 77 | } fp_save_layout_t; |
| | 78 | |
| | 79 | extern int fp_kind; |
| | 80 | |
| | 81 | extern void init_fpu(void); |
| | 82 | extern void fpu_module_init(void); |
| | 83 | extern void fpu_free( |
| | 84 | void * fps); |
| | 85 | extern kern_return_t fpu_set_fxstate( |
| | 86 | thread_t thr_act, |
| | 87 | thread_state_t state, |
| | 88 | thread_flavor_t f); |
| | 89 | extern kern_return_t fpu_get_fxstate( |
| | 90 | thread_t thr_act, |
| | 91 | thread_state_t state, |
| | 92 | thread_flavor_t f); |
| | 93 | extern void fpu_dup_fxstate( |
| | 94 | thread_t parent, |
| | 95 | thread_t child); |
| | 96 | extern void fpnoextflt(void); |
| | 97 | extern void fpextovrflt(void); |
| | 98 | extern void fpexterrflt(void); |
| | 99 | extern void fpSSEexterrflt(void); |
| | 100 | extern void fpflush(thread_t); |
| | 101 | extern void fp_setvalid(boolean_t); |
| | 102 | #ifdef __i386__ |
| | 103 | extern void fxsave64(struct x86_fx_thread_state *); |
| | 104 | extern void fxrstor64(struct x86_fx_thread_state *); |
| | 105 | #endif |
| | 106 | |
| | 107 | extern void clear_fpu(void); |
| | 108 | extern void fpu_save_context(thread_t thread); |
| | 109 | |
| | 110 | #endif /* _I386_FPU_H_ */ |
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