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 * $FreeBSD$ 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 48208833Skib#define PCB_USER_FPU(pcb) (((pcb)->pcb_flags & PCB_KERNNPX) == 0) 49208833Skib 5092761Salfredint npxdna(void); 51103408Sminivoid npxdrop(void); 5292761Salfredvoid npxexit(struct thread *td); 53103408Sminiint npxformat(void); 54215865Skibint npxgetregs(struct thread *td); 55189418Sjhbvoid npxinit(void); 56271999Sjhbvoid npxresume(union savefpu *addr); 5792761Salfredvoid npxsave(union savefpu *addr); 58103408Sminivoid npxsetregs(struct thread *td, union savefpu *addr); 59271999Sjhbvoid npxsuspend(union savefpu *addr); 60238678Skibint npxtrap_x87(void); 61238678Skibint npxtrap_sse(void); 62215865Skibvoid npxuserinited(struct thread *); 63230426Skibstruct fpu_kern_ctx *fpu_kern_alloc_ctx(u_int flags); 64230426Skibvoid fpu_kern_free_ctx(struct fpu_kern_ctx *ctx); 65208833Skibint fpu_kern_enter(struct thread *td, struct fpu_kern_ctx *ctx, 66208833Skib u_int flags); 67208833Skibint fpu_kern_leave(struct thread *td, struct fpu_kern_ctx *ctx); 68208833Skibint fpu_kern_thread(u_int flags); 69208833Skibint is_fpu_kern_thread(u_int flags); 70158995Sdavidxu 71208833Skib/* 72208833Skib * Flags for fpu_kern_enter() and fpu_kern_thread(). 73208833Skib */ 74208833Skib#define FPU_KERN_NORMAL 0x0000 75230426Skib#define FPU_KERN_NOWAIT 0x0001 76268033Skib#define FPU_KERN_KTHR 0x0002 77208833Skib 784175Sbde#endif 794175Sbde 804175Sbde#endif /* !_MACHINE_NPX_H_ */ 81