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
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
|
/* $NetBSD: shell_disassem.c,v 1.2 1996/03/06 23:52:15 mark Exp $ */
/*
* Copyright (c) 1994 Mark Brinicombe.
* Copyright (c) 1994 Brini.
* All rights reserved.
*
* This code is derived from software written for Brini by Mark Brinicombe
*
* 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 Brini.
* 4. The name of the company nor the name of the author may be used to
* endorse or promote products derived from this software without specific
* prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY BRINI ``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 BRINI OR CONTRIBUTORS 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.
*
* RiscBSD kernel project
*
* shell_disassem.c
*
* Debug / Monitor shell disassembler
*
* Created : 09/10/94
*/
/* Include standard header files */
#include <sys/param.h>
#include <sys/systm.h>
/* Local header files */
#include <machine/katelib.h>
/* Declare external variables */
/* Local function prototypes */
u_int disassemble __P((u_char *));
u_int do_disassemble __P((u_char *));
/* Now for the main code */
/* dis - disassembles memory */
void
shell_disassem(argc, argv)
int argc;
char *argv[];
{
u_char *addr;
if (argc < 2) {
printf("Syntax: dis <addr>\n\r");
return;
}
/* Decode the one argument */
addr = (u_char *)readhex(argv[1]);
printf("Interactive disassembly\n\r");
do_disassemble(addr);
}
u_int
do_disassemble(addr)
u_char *addr;
{
u_int result;
int quit = 0;
int key;
int count = 1;
do {
result = disassemble(addr);
--count;
if (count == 0) {
count = 1;
key = cngetc();
switch (key) {
case 'Q' :
case 'q' :
case 0x1b :
case 0x03 :
case 0x04 :
case 0x10b :
quit = 1;
break;
case 0x09 :
case 'r' :
case 'R' :
case 0x103 :
count = 16;
addr += 4;
break;
case 0x102 :
count = 16;
addr -= 124;
break;
case 0x0d :
case 0x101 :
addr = addr + 4;
break;
case 'B' :
case 'b' :
case 0x100:
addr = addr - 4;
break;
case '+' :
case '=' :
case 0x104 :
addr = addr + 0x80;
break;
case '-' :
case '_' :
case 0x105 :
addr = addr - 0x80;
break;
case ' ' :
quit = do_disassemble((u_char *)result);
break;
case 'J' :
case 'j' :
addr = (u_char *)result;
break;
case '/' :
case '?' :
printf("\'\xe3\' - Backwards 1 word\n\r");
printf("\'\xe4\' - Forwards 1 word\n\r");
printf("\'\xe5\' - Backwords 16 words\n\r");
printf("\'\xe6\' - Forwards 16 words\n\r");
printf("\'Q\' - Quit\n\r");
printf("\'B\' - Back a word\n\r");
printf("\'R\' - Disassemble 16 words\n\r");
printf("\'J\' - Jump to address\n\r");
printf("\' \' - Branch to address\n\r");
printf("<BS> - Return from branch\n\r");
printf("\'-\' - Skip backwards 128 words\n\r");
printf("\'+\' - Skip forwards 128 words\n\r");
break;
}
} else {
addr += 4;
}
} while (!quit && key != 0x08);
return(quit);
}
/* End of shell_disassem.c */
|
