/*- * SPDX-License-Identifier: BSD-3-Clause * * Copyright (c) 1990 The Regents of the University of California. * All rights reserved. * * This code is derived from software contributed to Berkeley by * William Jolitz. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * from: @(#)npx.h 5.3 (Berkeley) 1/18/91 * $FreeBSD$ */ /* * 287/387 NPX Coprocessor Data Structures and Constants * W. Jolitz 1/90 */ #ifndef _MACHINE_NPX_H_ #define _MACHINE_NPX_H_ #include <x86/fpu.h> #ifdef _KERNEL struct fpu_kern_ctx; #define PCB_USER_FPU(pcb) (((pcb)->pcb_flags & PCB_KERNNPX) == 0) #define XSAVE_AREA_ALIGN 64 int npxdna(void); void npxdrop(void); void npxexit(struct thread *td); int npxformat(void); int npxgetregs(struct thread *td); void npxinit(bool bsp); void npxresume(union savefpu *addr); void npxsave(union savefpu *addr); int npxsetregs(struct thread *td, union savefpu *addr, char *xfpustate, size_t xfpustate_size); int npxsetxstate(struct thread *td, char *xfpustate, size_t xfpustate_size); void npxsuspend(union savefpu *addr); int npxtrap_x87(void); int npxtrap_sse(void); void npxuserinited(struct thread *); void npx_get_fsave(void *); int npx_set_fsave(void *); void npx_fill_fpregs_xmm(struct savexmm *, struct save87 *); void npx_set_fpregs_xmm(struct save87 *, struct savexmm *); struct fpu_kern_ctx *fpu_kern_alloc_ctx(u_int flags); void fpu_kern_free_ctx(struct fpu_kern_ctx *ctx); void fpu_kern_enter(struct thread *td, struct fpu_kern_ctx *ctx, u_int flags); int fpu_kern_leave(struct thread *td, struct fpu_kern_ctx *ctx); int fpu_kern_thread(u_int flags); int is_fpu_kern_thread(u_int flags); union savefpu *fpu_save_area_alloc(void); void fpu_save_area_free(union savefpu *fsa); void fpu_save_area_reset(union savefpu *fsa); /* * Flags for fpu_kern_alloc_ctx(), fpu_kern_enter() and fpu_kern_thread(). */ #define FPU_KERN_NORMAL 0x0000 #define FPU_KERN_NOWAIT 0x0001 #define FPU_KERN_KTHR 0x0002 #endif #endif /* !_MACHINE_NPX_H_ */ |