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
188
189
190
191
192
193
|
/* Miscellaneous simulator utilities.
Copyright (C) 1997 Free Software Foundation, Inc.
Contributed by Cygnus Support.
This file is part of GDB, the GNU debugger.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
#include "sim-main.h"
#include "sim-assert.h"
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif
#ifdef HAVE_TIME_H
#include <time.h>
#endif
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h> /* needed by sys/resource.h */
#endif
#ifdef HAVE_SYS_RESOURCE_H
#include <sys/resource.h>
#endif
#include "libiberty.h"
#include "bfd.h"
/* Global pointer to all state data.
Set by sim_resume. */
struct sim_state *current_state;
/* Allocate zero filled memory with xmalloc. */
void *
zalloc (unsigned long size)
{
void *memory = (void *) xmalloc (size);
memset (memory, 0, size);
return memory;
}
void
zfree (void *data)
{
free (data);
}
/* Allocate a sim_state struct. */
SIM_DESC
sim_state_alloc (void)
{
SIM_DESC sd = zalloc (sizeof (struct sim_state));
sd->base.magic = SIM_MAGIC_NUMBER;
return sd;
}
/* Free a sim_state struct. */
void
sim_state_free (SIM_DESC sd)
{
ASSERT (sd->base.magic == SIM_MAGIC_NUMBER);
zfree (sd);
}
/* Turn VALUE into a string with commas. */
char *
sim_add_commas (char *buf, int sizeof_buf, unsigned long value)
{
int comma = 3;
char *endbuf = buf + sizeof_buf - 1;
*--endbuf = '\0';
do {
if (comma-- == 0)
{
*--endbuf = ',';
comma = 2;
}
*--endbuf = (value % 10) + '0';
} while ((value /= 10) != 0);
return endbuf;
}
/* Make a copy of ARGV.
This can also be used to copy the environment vector.
The result is a pointer to the malloc'd copy or NULL if insufficient
memory available. */
char **
sim_copy_argv (argv)
char **argv;
{
int i,argc,len;
char **copy,*p;
argc = len = 0;
if (argv)
{
for ( ; argv[argc]; ++argc)
len += strlen (argv[argc]) + 1;
}
copy = (char **) malloc ((argc + 1) * sizeof (char *) + len);
if (copy == NULL)
return NULL;
p = (char *) copy + (argc + 1) * sizeof (char *);
for (i = 0; i < argc; ++i)
{
copy[i] = p;
strcpy (p, argv[i]);
p += strlen (argv[i]) + 1;
}
copy[argc] = 0;
return copy;
}
/* Analyze a bfd and set various fields in the state struct. */
void
sim_analyze_program (sd, prog_bfd)
SIM_DESC sd;
bfd *prog_bfd;
{
asection *s;
STATE_PROG_BFD (sd) = prog_bfd;
STATE_START_ADDR (sd) = bfd_get_start_address (prog_bfd);
for (s = prog_bfd->sections; s; s = s->next)
if (strcmp (bfd_get_section_name (prog_bfd, s), ".text") == 0)
{
STATE_TEXT_SECTION (sd) = s;
STATE_TEXT_START (sd) = bfd_get_section_vma (prog_bfd, s);
STATE_TEXT_END (sd) = STATE_TEXT_START (sd) + bfd_section_size (prog_bfd, s);
break;
}
}
/* Simulator timing support. */
/* Called before sim_elapsed_time_since to get a reference point. */
SIM_ELAPSED_TIME
sim_elapsed_time_get ()
{
#ifdef HAVE_GETRUSAGE
struct rusage mytime;
if (getrusage (RUSAGE_SELF, &mytime) == 0)
return (SIM_ELAPSED_TIME) (((double) mytime.ru_utime.tv_sec * 1000) + (((double) mytime.ru_utime.tv_usec + 500) / 1000));
return 0;
#else
#ifdef HAVE_TIME
return (SIM_ELAPSED_TIME) time ((time_t) 0);
#else
return 0;
#endif
#endif
}
/* Return the elapsed time in milliseconds since START.
The actual time may be cpu usage (prefered) or wall clock. */
unsigned long
sim_elapsed_time_since (start)
SIM_ELAPSED_TIME start;
{
#ifdef HAVE_GETRUSAGE
return sim_elapsed_time_get () - start;
#else
#ifdef HAVE_TIME
return (sim_elapsed_time_get () - start) * 1000;
#else
return 0;
#endif
#endif
}
|
