14Srgrimes/*-
24Srgrimes * Copyright (c) 1990 The Regents of the University of California.
34Srgrimes * All rights reserved.
44Srgrimes *
54Srgrimes * This code is derived from software contributed to Berkeley by
64Srgrimes * William Jolitz.
74Srgrimes *
84Srgrimes * Redistribution and use in source and binary forms, with or without
94Srgrimes * modification, are permitted provided that the following conditions
104Srgrimes * are met:
114Srgrimes * 1. Redistributions of source code must retain the above copyright
124Srgrimes *    notice, this list of conditions and the following disclaimer.
134Srgrimes * 2. Redistributions in binary form must reproduce the above copyright
144Srgrimes *    notice, this list of conditions and the following disclaimer in the
154Srgrimes *    documentation and/or other materials provided with the distribution.
164Srgrimes * 4. Neither the name of the University nor the names of its contributors
174Srgrimes *    may be used to endorse or promote products derived from this software
184Srgrimes *    without specific prior written permission.
194Srgrimes *
204Srgrimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
214Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
224Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
234Srgrimes * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
244Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
254Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
264Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
274Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
284Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
294Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
304Srgrimes * SUCH DAMAGE.
314Srgrimes *
32621Srgrimes *	from: @(#)npx.h	5.3 (Berkeley) 1/18/91
3350477Speter * $FreeBSD: releng/11.0/sys/i386/include/npx.h 284926 2015-06-29 12:06:36Z kib $
344Srgrimes */
354Srgrimes
364Srgrimes/*
374Srgrimes * 287/387 NPX Coprocessor Data Structures and Constants
384Srgrimes * W. Jolitz 1/90
394Srgrimes */
404Srgrimes
414175Sbde#ifndef _MACHINE_NPX_H_
424175Sbde#define	_MACHINE_NPX_H_
434Srgrimes
44233044Stijl#include <x86/fpu.h>
454Srgrimes
4655205Speter#ifdef _KERNEL
47146137Snyan
48273995Sjhbstruct fpu_kern_ctx;
49273995Sjhb
50208833Skib#define	PCB_USER_FPU(pcb) (((pcb)->pcb_flags & PCB_KERNNPX) == 0)
51208833Skib
52273995Sjhb#define	XSAVE_AREA_ALIGN	64
53273995Sjhb
5492761Salfredint	npxdna(void);
55103408Sminivoid	npxdrop(void);
5692761Salfredvoid	npxexit(struct thread *td);
57103408Sminiint	npxformat(void);
58215865Skibint	npxgetregs(struct thread *td);
59273995Sjhbvoid	npxinit(bool bsp);
60270850Sjhbvoid	npxresume(union savefpu *addr);
6192761Salfredvoid	npxsave(union savefpu *addr);
62273995Sjhbint	npxsetregs(struct thread *td, union savefpu *addr,
63273995Sjhb	    char *xfpustate, size_t xfpustate_size);
64273995Sjhbint	npxsetxstate(struct thread *td, char *xfpustate,
65273995Sjhb	    size_t xfpustate_size);
66270850Sjhbvoid	npxsuspend(union savefpu *addr);
67238678Skibint	npxtrap_x87(void);
68238678Skibint	npxtrap_sse(void);
69215865Skibvoid	npxuserinited(struct thread *);
70284926Skibvoid	npx_get_fsave(void *);
71284926Skibint	npx_set_fsave(void *);
72284926Skibvoid	npx_fill_fpregs_xmm(struct savexmm *, struct save87 *);
73284926Skibvoid	npx_set_fpregs_xmm(struct save87 *, struct savexmm *);
74284926Skib
75230426Skibstruct fpu_kern_ctx *fpu_kern_alloc_ctx(u_int flags);
76230426Skibvoid	fpu_kern_free_ctx(struct fpu_kern_ctx *ctx);
77208833Skibint	fpu_kern_enter(struct thread *td, struct fpu_kern_ctx *ctx,
78208833Skib	    u_int flags);
79208833Skibint	fpu_kern_leave(struct thread *td, struct fpu_kern_ctx *ctx);
80208833Skibint	fpu_kern_thread(u_int flags);
81208833Skibint	is_fpu_kern_thread(u_int flags);
82158995Sdavidxu
83273995Sjhbunion savefpu	*fpu_save_area_alloc(void);
84273995Sjhbvoid	fpu_save_area_free(union savefpu *fsa);
85273995Sjhbvoid	fpu_save_area_reset(union savefpu *fsa);
86273995Sjhb
87208833Skib/*
88273995Sjhb * Flags for fpu_kern_alloc_ctx(), fpu_kern_enter() and fpu_kern_thread().
89208833Skib */
90208833Skib#define	FPU_KERN_NORMAL	0x0000
91230426Skib#define	FPU_KERN_NOWAIT	0x0001
92267767Skib#define	FPU_KERN_KTHR	0x0002
93208833Skib
944175Sbde#endif
954175Sbde
964175Sbde#endif /* !_MACHINE_NPX_H_ */
97