FreeBSD/Linux Kernel Cross Reference
sys/powerpc/include/fpu.h

     /*-
      * 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 $
     * $FreeBSD$
     */
    
    #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 *);
    
    #endif /* _KERNEL */
    
    #endif  /* _MACHINE_FPU_H_ */

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