/*- * SPDX-License-Identifier: BSD-4-Clause * * Copyright (C) 1996 Wolfgang Solfrank. * Copyright (C) 1996 TooLs GmbH. * All rights reserved. * * 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. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by TooLs GmbH. * 4. The name of TooLs GmbH may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``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 TOOLS GMBH 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. * * $NetBSD: fpu.h,v 1.2 1999/12/07 15:14:56 danw Exp $ */ #ifndef _MACHINE_FPU_H_ #define _MACHINE_FPU_H_ #define FPSCR_FX 0x80000000 #define FPSCR_FEX 0x40000000 #define FPSCR_VX 0x20000000 #define FPSCR_OX 0x10000000 #define FPSCR_UX 0x08000000 #define FPSCR_ZX 0x04000000 #define FPSCR_XX 0x02000000 #define FPSCR_VXSNAN 0x01000000 #define FPSCR_VXISI 0x00800000 #define FPSCR_VXIDI 0x00400000 #define FPSCR_VXZDZ 0x00200000 #define FPSCR_VXIMZ 0x00100000 #define FPSCR_VXVC 0x00080000 #define FPSCR_FR 0x00040000 #define FPSCR_FI 0x00020000 #define FPSCR_FPRF 0x0001f000 #define FPSCR_C 0x00010000 #define FPSCR_FPCC 0x0000f000 #define FPSCR_FL 0x00008000 #define FPSCR_FG 0x00004000 #define FPSCR_FE 0x00002000 #define FPSCR_FU 0x00001000 #define FPSCR_VXSOFT 0x00000400 #define FPSCR_VXSQRT 0x00000200 #define FPSCR_VXCVI 0x00000100 #define FPSCR_VE 0x00000080 #define FPSCR_OE 0x00000040 #define FPSCR_UE 0x00000020 #define FPSCR_ZE 0x00000010 #define FPSCR_XE 0x00000008 #define FPSCR_NI 0x00000004 #define FPSCR_RN 0x00000003 #ifdef _KERNEL void enable_fpu(struct thread *); void save_fpu(struct thread *); void save_fpu_nodrop(struct thread *); void cleanup_fpscr(void); u_int get_fpu_exception(struct thread *); void enable_fpu_kern(void); void disable_fpu(struct thread *td); /* * 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 #define FPU_KERN_NOCTX 0x0004 struct fpu_kern_ctx; 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); #endif /* _KERNEL */ #endif /* _MACHINE_FPU_H_ */
