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      1 /*	$NetBSD: md.h,v 1.5 2025/07/09 21:55:44 andvar Exp $	*/
      2 
      3 /*	$OpenBSD: md.h,v 1.4 2001/03/29 03:58:18 mickey Exp $	*/
      4 
      5 /*
      6  * Copyright 1996 1995 by Open Software Foundation, Inc.
      7  *              All Rights Reserved
      8  *
      9  * Permission to use, copy, modify, and distribute this software and
     10  * its documentation for any purpose and without fee is hereby granted,
     11  * provided that the above copyright notice appears in all copies and
     12  * that both the copyright notice and this permission notice appear in
     13  * supporting documentation.
     14  *
     15  * OSF DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE
     16  * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
     17  * FOR A PARTICULAR PURPOSE.
     18  *
     19  * IN NO EVENT SHALL OSF BE LIABLE FOR ANY SPECIAL, INDIRECT, OR
     20  * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
     21  * LOSS OF USE, DATA OR PROFITS, WHETHER IN ACTION OF CONTRACT,
     22  * NEGLIGENCE, OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
     23  * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
     24  *
     25  */
     26 /*
     27  * pmk1.1
     28  */
     29 /*
     30  * (c) Copyright 1986 HEWLETT-PACKARD COMPANY
     31  *
     32  * To anyone who acknowledges that this file is provided "AS IS"
     33  * without any express or implied warranty:
     34  *     permission to use, copy, modify, and distribute this file
     35  * for any purpose is hereby granted without fee, provided that
     36  * the above copyright notice and this notice appears in all
     37  * copies, and that the name of Hewlett-Packard Company not be
     38  * used in advertising or publicity pertaining to distribution
     39  * of the software without specific, written prior permission.
     40  * Hewlett-Packard Company makes no representations about the
     41  * suitability of this software for any purpose.
     42  */
     43 
     44 #include <sys/cdefs.h>
     45 #include <sys/types.h>
     46 
     47 /*****************************************************************
     48  * Multiply/Divide SFU Internal State                             *
     49  *****************************************************************/
     50 struct mdsfu_register {
     51     int rslt_hi,
     52 	rslt_lo,
     53 	ovflow;
     54     };
     55 
     56 #define result_hi result->rslt_hi
     57 #define result_lo result->rslt_lo
     58 #define overflow result->ovflow
     59 
     60 /*
     61  *  Constants
     62  */
     63 
     64 #undef NIL
     65 #define NIL 0
     66 
     67 #define WORD_LEN 32
     68 #define BIT0 1<<31
     69 #define BIT28 0x8
     70 #define BIT29 0x4
     71 #define BIT30 0x2
     72 #define BIT31 0x1
     73 
     74 	/* Simply copy the arguments to the emulated copies of the registers */
     75 #define	mdrr(reg1,reg2,result)	{result_hi = reg1;result_lo = reg2;}
     76 
     77 /*
     78  *  Structures
     79  */
     80 
     81 struct md_state {
     82 	int resulthi,	/* high word of result */
     83 	    resultlo;	/* low word of result */
     84 };
     85 
     86 void divsfm(int, int, struct mdsfu_register *);
     87 void divsfr(int, int, struct mdsfu_register *);
     88 void divsim(int, int, struct mdsfu_register *);
     89 void divsir(int, int, struct mdsfu_register *);
     90 
     91 void divu(int, int, int, struct mdsfu_register *);
     92 void divufr(unsigned int, unsigned int, struct mdsfu_register *);
     93 void divuir(unsigned int, unsigned int, struct mdsfu_register *);
     94 
     95 void mpyaccs(int, int, struct mdsfu_register *);
     96 void mpyaccu(unsigned int, unsigned int, struct mdsfu_register *);
     97 void mpys(int, int, struct mdsfu_register *);
     98 void mpyscv(int, int, struct mdsfu_register *);
     99 void mpyu(unsigned int, unsigned int, struct mdsfu_register *);
    100 void mpyucv(unsigned int, unsigned int, struct mdsfu_register *);
    101 
    102 int impys(int *, int *, struct mdsfu_register *);
    103 int impyu(int *, int *, struct mdsfu_register *);
    104