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
187
|
/*
* Mach Operating System
* Copyright (c) 1991,1990 Carnegie Mellon University
* All Rights Reserved.
*
* Permission to use, copy, modify and distribute this software and its
* documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
* ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* Carnegie Mellon requests users of this software to return to
*
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
* School of Computer Science
* Carnegie Mellon University
* Pittsburgh PA 15213-3890
*
* any improvements or extensions that they make and grant Carnegie Mellon
* the rights to redistribute these changes.
*/
#if MACH_KDB
#include <string.h>
#include <kern/thread.h>
#include <machine/db_machdep.h>
#include <ddb/db_lex.h>
#include <ddb/db_variables.h>
#include <ddb/db_command.h>
#include <ddb/db_examine.h>
#include <ddb/db_expr.h>
#include <ddb/db_macro.h>
#include <ddb/db_output.h>
/*
* debugger macro support
*/
#define DB_MACRO_LEVEL 5 /* max macro nesting */
#define DB_NARGS 10 /* max args */
#define DB_NUSER_MACRO 10 /* max user macros */
int db_macro_free = DB_NUSER_MACRO;
struct db_user_macro {
char m_name[TOK_STRING_SIZE];
char m_lbuf[DB_LEX_LINE_SIZE];
int m_size;
} db_user_macro[DB_NUSER_MACRO];
int db_macro_level = 0;
db_expr_t db_macro_args[DB_MACRO_LEVEL][DB_NARGS];
static struct db_user_macro *
db_lookup_macro(name)
const char *name;
{
struct db_user_macro *mp;
for (mp = db_user_macro; mp < &db_user_macro[DB_NUSER_MACRO]; mp++) {
if (mp->m_name[0] == 0)
continue;
if (strcmp(mp->m_name, name) == 0)
return(mp);
}
return(0);
}
void
db_def_macro_cmd(void)
{
char *p;
int c;
struct db_user_macro *mp, *ep;
if (db_read_token() != tIDENT) {
db_printf("Bad macro name \"%s\"\n", db_tok_string);
db_error(0);
/* NOTREACHED */
}
if ((mp = db_lookup_macro(db_tok_string)) == 0) {
if (db_macro_free <= 0)
db_error("Too many macros\n");
/* NOTREACHED */
ep = &db_user_macro[DB_NUSER_MACRO];
for (mp = db_user_macro; mp < ep && mp->m_name[0]; mp++);
if (mp >= ep)
db_error("ddb: internal error(macro)\n");
/* NOTREACHED */
db_macro_free--;
db_strcpy(mp->m_name, db_tok_string);
}
for (c = db_read_char(); c == ' ' || c == '\t'; c = db_read_char());
for (p = mp->m_lbuf; c > 0; c = db_read_char())
*p++ = c;
*p = 0;
mp->m_size = p - mp->m_lbuf;
}
void
db_del_macro_cmd(void)
{
struct db_user_macro *mp;
if (db_read_token() != tIDENT
|| (mp = db_lookup_macro(db_tok_string)) == 0) {
db_printf("No such macro \"%s\"\n", db_tok_string);
db_error(0);
/* NOTREACHED */
} else {
mp->m_name[0] = 0;
db_macro_free++;
}
}
void
db_show_macro(void)
{
struct db_user_macro *mp;
int t;
char *name = 0;
if ((t = db_read_token()) == tIDENT)
name = db_tok_string;
else
db_unread_token(t);
for (mp = db_user_macro; mp < &db_user_macro[DB_NUSER_MACRO]; mp++) {
if (mp->m_name[0] == 0)
continue;
if (name && strcmp(mp->m_name, name))
continue;
db_printf("%s: %s", mp->m_name, mp->m_lbuf);
}
}
int
db_exec_macro(name)
const char *name;
{
struct db_user_macro *mp;
int n;
if ((mp = db_lookup_macro(name)) == 0)
return(-1);
if (db_macro_level+1 >= DB_MACRO_LEVEL) {
db_macro_level = 0;
db_error("Too many macro nest\n");
/* NOTREACHED */
}
for (n = 0;
n < DB_NARGS &&
db_expression(&db_macro_args[db_macro_level+1][n]);
n++);
while (n < DB_NARGS)
db_macro_args[db_macro_level+1][n++] = 0;
db_macro_level++;
db_exec_cmd_nest(mp->m_lbuf, mp->m_size);
db_macro_level--;
return(0);
}
void
/* ARGSUSED */
db_arg_variable(
struct db_variable *vp,
db_expr_t *valuep,
int flag,
db_var_aux_param_t ap)
{
if (ap->level != 1 || ap->suffix[0] < 1 || ap->suffix[0] > DB_NARGS) {
db_error("Bad $arg variable\n");
/* NOTREACHED */
}
if (flag == DB_VAR_GET)
*valuep = db_macro_args[db_macro_level][ap->suffix[0]-1];
else
db_macro_args[db_macro_level][ap->suffix[0]-1] = *valuep;
return;
}
#endif /* MACH_KDB */
|
