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 71typedef enum { 72 FXSAVE32 = 1, 73 FXSAVE64 = 2, 74 XSAVE32 = 3, 75 XSAVE64 = 4, 76 FP_UNUSED = 5 77 } fp_save_layout_t; 78 79extern int fp_kind; 80 81extern void init_fpu(void); 82extern void fpu_module_init(void); 83extern void fpu_free( 84 void * fps); 85extern kern_return_t fpu_set_fxstate( 86 thread_t thr_act, 87 thread_state_t state, 88 thread_flavor_t f); 89extern kern_return_t fpu_get_fxstate( 90 thread_t thr_act, 91 thread_state_t state, 92 thread_flavor_t f); 93extern void fpu_dup_fxstate( 94 thread_t parent, 95 thread_t child); 96extern void fpnoextflt(void); 97extern void fpextovrflt(void); 98extern void fpexterrflt(void); 99extern void fpSSEexterrflt(void); 100extern void fpflush(thread_t); 101extern void fp_setvalid(boolean_t); 102#ifdef __i386__ 103extern void fxsave64(struct x86_fx_thread_state *); 104extern void fxrstor64(struct x86_fx_thread_state *); 105#endif 106 107extern void clear_fpu(void); 108extern void fpu_save_context(thread_t thread); 109 110#endif /* _I386_FPU_H_ */ 111