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
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
|
/*
* Copyright (c) 1992, 1993, 1996
* Berkeley Software Design, Inc. 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 Berkeley Software
* Design, Inc.
*
* THIS SOFTWARE IS PROVIDED BY Berkeley Software Design, Inc. ``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 Berkeley Software Design, Inc. 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.
*
* BSDI int2f.c,v 2.2 1996/04/08 19:32:53 bostic Exp
*
* $Id: int2f.c,v 1.4 1996/09/22 15:42:56 miff Exp $
*/
#include "doscmd.h"
#include "dispatch.h"
/*
** Multiplex interrupt.
**
** subfunctions 0-0x7f reserved for DOS, some are implemented here.
**
*/
/*
** 2f:00 2f:01 2f:02 2f:03
**
** Various PRINT.COM functions
*/
static int
int2f_printer(regcontext_t *REGS)
{
debug (D_FILE_OPS, "Called printer function 0x%02x", R_AH);
R_AL = FUNC_NUM_IVALID;
}
/*
** 2f:12
**
** DOS internal functions. Only one we support is 0x2e, and then only to
** complain about it.
*/
static int
int2f_dosinternal(regcontext_t *REGS)
{
switch (R_AL) {
case 0x2e: /* XXX - GET/SET ERROR TABLE ADDRESSES */
switch (R_DL) {
case 0x00:
case 0x02:
case 0x04:
case 0x06:
debug(D_ALWAYS,"DOS program attempted to get internal error table.\n");
break;
case 0x01:
case 0x03:
case 0x05:
case 0x07:
case 0x09:
debug(D_ALWAYS,"DOS program attempted to set error table.\n");
break;
}
default:
unknown_int4(0x2f, 0x12, R_AL, R_DL, REGS);
break;
}
R_AL = FUNC_NUM_IVALID;
return(0);
}
/*
** 2f:16
**
** Windows Enhanced Mode functions. Aigh!
*/
static int
int2f_windows(regcontext_t *REGS)
{
switch (R_AL) {
case 0x80: /* installation check */
tty_pause();
R_AL = 0x00;
return(0);
default:
unknown_int3(0x2f, 0x16, R_AL, REGS);
break;
}
R_AL = FUNC_NUM_IVALID;
return(0);
}
/*
** 2f:43
**
** XMS interface
*/
static int
int2f_xms(regcontext_t *REGS)
{
switch(R_AL) {
case 0: /* installation check */
return(0); /* %al = 0 */
default:
R_AL = FUNC_NUM_IVALID;
return(0);
}
}
static struct intfunc_table int2f_table[] = {
{ 0x00, IFT_NOSUBFUNC, int2f_printer, "printer"},
{ 0x01, IFT_NOSUBFUNC, int2f_printer, "printer"},
{ 0x02, IFT_NOSUBFUNC, int2f_printer, "printer"},
{ 0x03, IFT_NOSUBFUNC, int2f_printer, "printer"},
{ 0x12, IFT_NOSUBFUNC, int2f_dosinternal, "DOS internal function"},
{ 0x16, IFT_NOSUBFUNC, int2f_windows, "Windows detect"},
{ 0x43, IFT_NOSUBFUNC, int2f_xms, "XMS"},
{ -1, 0, NULL, NULL}
};
/*
** int2f (multiplex) handler.
**
** Note that due to the widely varied and inconsistent conventions, handlers
** called from here are expected to manage their own return values.
*/
void
int2f(regcontext_t *REGS)
{
int index;
/* look up the handler for the current function */
index = intfunc_search(int2f_table, R_AH, R_AL);
if (index >= 0) { /* respond on multiplex chain */
int2f_table[index].handler(REGS);
} else {
unknown_int2(0x2f, R_AH, REGS);
}
}
|
