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      1 /*
      2  * CDDL HEADER START
      3  *
      4  * The contents of this file are subject to the terms of the
      5  * Common Development and Distribution License, Version 1.0 only
      6  * (the "License").  You may not use this file except in compliance
      7  * with the License.
      8  *
      9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
     10  * or http://www.opensolaris.org/os/licensing.
     11  * See the License for the specific language governing permissions
     12  * and limitations under the License.
     13  *
     14  * When distributing Covered Code, include this CDDL HEADER in each
     15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
     16  * If applicable, add the following below this CDDL HEADER, with the
     17  * fields enclosed by brackets "[]" replaced with your own identifying
     18  * information: Portions Copyright [yyyy] [name of copyright owner]
     19  *
     20  * CDDL HEADER END
     21  */
     22 /*
     23  * Copyright 1988 Sun Microsystems, Inc.  All rights reserved.
     24  * Use is subject to license terms.
     25  */
     26 
     27 #ifndef	_qglobals_h
     28 #define	_qglobals_h
     29 
     30 #pragma ident	"%Z%%M%	%I%	%E% SMI"
     31 
     32 /*	Sparc floating-point simulator PRIVATE include file. */
     33 
     34 /*	PRIVATE CONSTANTS	*/
     35 #define INTEGER_BIAS	   31
     36 #define	SINGLE_BIAS	  127
     37 #define DOUBLE_BIAS	 1023
     38 #define EXTENDED_BIAS	16383
     39 
     40 /* PRIVATE TYPES	*/
     41 #ifdef DEBUG
     42 #define PRIVATE
     43 #else
     44 #define PRIVATE static
     45 #endif
     46 
     47 typedef	struct {
     48 	int sign ;
     49 	enum fp_class_type fpclass ;
     50 	int	exponent ;		/* Unbiased exponent. */
     51 	unsigned significand[4] ;	/* Four significand word . */
     52 	int	rounded;		/* rounded bit */
     53 	int	sticky;			/* stick bit */
     54 } unpacked ;
     55 
     56 /* PRIVATE GLOBAL VARIABLES */
     57 
     58 enum fp_direction_type fp_direction ;	/* Current rounding direction. */
     59 enum fp_precision_type fp_precision ;	/* Current extended rounding precision. */
     60 
     61 unsigned	_fp_current_exceptions ; /* Current floating-point exceptions. */
     62 
     63 extern void _fp_unpack(unpacked *, int *, enum fp_op_type);
     64 /*	unpacked	*pu ; */	/* unpacked result */
     65 /*	int		*n ; */		/* register where data starts */
     66 /*	fp_op_type	type ;*/	/* type of datum */
     67 
     68 extern void _fp_pack(unpacked *, int *, enum fp_op_type);
     69 /*	unpacked	*pu ; */	/* unpacked result */
     70 /*	int		*n ; */		/* register where data starts */
     71 /*	fp_op_type	type ; */	/* type of datum */
     72 
     73 extern void fpu_normalize(unpacked *);
     74 /*	unpacked	*pu ; */	/* unpacked operand and result */
     75 
     76 extern void fpu_rightshift(unpacked *, int);
     77 /*	unpacked *pu ; unsigned n ;	*/
     78 /*	Right shift significand sticky by n bits. */
     79 
     80 extern unsigned fpu_add3wc(unsigned *, unsigned, unsigned, unsigned);
     81 /*	unsigned *z,x,y,c; */ 	/* *z = x+y+carry; return new carry */
     82 
     83 extern unsigned fpu_sub3wc(unsigned *, unsigned, unsigned, unsigned);
     84 /*	unsigned *z,x,y,c; */ 	/* *z = x-y-carry; return new carry */
     85 
     86 extern unsigned fpu_neg2wc(unsigned *, unsigned, unsigned);
     87 /*	unsigned *z,x,c; */ 	/* *z = 0-x-carry; return new carry */
     88 
     89 extern int fpu_cmpli(unsigned [], unsigned [], int);
     90 /*	unsigned x[],y[],n; */ 	/* n-word compare  */
     91 
     92 extern void fpu_set_exception(enum fp_exception_type);
     93 /*	enum fp_exception_type ex ; */	/* exception to be set in curexcep */
     94 
     95 extern void fpu_error_nan(unpacked *);
     96 /*	unpacked *pu ; */	/* Set invalid exception and error nan in *pu */
     97 
     98 extern void unpacksingle(unpacked *, single_type);
     99 /*	unpacked	*pu; */	/* packed result */
    100 /*	single_type	x; */	/* packed single */
    101 
    102 extern void unpackdouble(unpacked *, double_type, unsigned);
    103 /*	unpacked	*pu; */	/* unpacked result */
    104 /*	double_type	x; */	/* packed double */
    105 /*	unsigned	y; */
    106 
    107 extern enum fcc_type _fp_compare(unpacked *, unpacked *, int);
    108 
    109 extern void _fp_add(unpacked *, unpacked *, unpacked *);
    110 extern void _fp_sub(unpacked *, unpacked *, unpacked *);
    111 extern void _fp_mul(unpacked *, unpacked *, unpacked *);
    112 extern void _fp_div(unpacked *, unpacked *, unpacked *);
    113 extern void _fp_sqrt(unpacked *, unpacked *);
    114 
    115 #endif /* _qglobals_h */
    116