1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
|
/* $OpenBSD: md.h,v 1.4 2001/03/29 03:58:18 mickey Exp $ */
/*
* Copyright 1996 1995 by Open Software Foundation, Inc.
* All Rights Reserved
*
* Permission to use, copy, modify, and distribute this software and
* its documentation for any purpose and without fee is hereby granted,
* provided that the above copyright notice appears in all copies and
* that both the copyright notice and this permission notice appear in
* supporting documentation.
*
* OSF DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE.
*
* IN NO EVENT SHALL OSF BE LIABLE FOR ANY SPECIAL, INDIRECT, OR
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
* LOSS OF USE, DATA OR PROFITS, WHETHER IN ACTION OF CONTRACT,
* NEGLIGENCE, OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
* WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
*/
/*
* pmk1.1
*/
/*
* (c) Copyright 1986 HEWLETT-PACKARD COMPANY
*
* To anyone who acknowledges that this file is provided "AS IS"
* without any express or implied warranty:
* permission to use, copy, modify, and distribute this file
* for any purpose is hereby granted without fee, provided that
* the above copyright notice and this notice appears in all
* copies, and that the name of Hewlett-Packard Company not be
* used in advertising or publicity pertaining to distribution
* of the software without specific, written prior permission.
* Hewlett-Packard Company makes no representations about the
* suitability of this software for any purpose.
*/
#include <sys/cdefs.h>
/*****************************************************************
* Muliply/Divide SFU Internal State *
*****************************************************************/
struct mdsfu_register {
int rslt_hi,
rslt_lo,
ovflow;
};
#define result_hi result->rslt_hi
#define result_lo result->rslt_lo
#define overflow result->ovflow
/*
* Constants
*/
#undef FALSE
#define FALSE 0
#undef TRUE
#define TRUE (!FALSE)
#undef NIL
#define NIL 0
#define WORD_LEN 32
#define BIT0 1<<31
#define BIT28 0x8
#define BIT29 0x4
#define BIT30 0x2
#define BIT31 0x1
/* Simply copy the arguments to the emulated copies of the registers */
#define mdrr(reg1,reg2,result) {result_hi = reg1;result_lo = reg2;}
/*
* Structures
*/
struct md_state {
int resulthi, /* high word of result */
resultlo; /* low word of result */
};
void divsfm __P((int, int, struct mdsfu_register *));
void divsfr __P((int, int, struct mdsfu_register *));
void divsim __P((int, int, struct mdsfu_register *));
void divsir __P((int, int, struct mdsfu_register *));
void divu __P((int, int, int, struct mdsfu_register *));
void divufr __P((unsigned int, unsigned int, struct mdsfu_register *));
void divuir __P((unsigned int, unsigned int, struct mdsfu_register *));
void mpyaccs __P((int, int, struct mdsfu_register *));
void mpyaccu __P((unsigned int, unsigned int, struct mdsfu_register *));
void mpys __P((int, int, struct mdsfu_register *));
void mpyscv __P((int, int, struct mdsfu_register *));
void mpyu __P((unsigned int, unsigned int, struct mdsfu_register *));
void mpyucv __P((unsigned int, unsigned int, struct mdsfu_register *));
int impys __P((int *, int *, struct mdsfu_register *));
int impyu __P((int *, int *, struct mdsfu_register *));
|
