1 /* Miscellaneous simulator utilities.
2 Copyright (C) 1997 Free Software Foundation, Inc.
3 Contributed by Cygnus Support.
5 This file is part of GDB, the GNU debugger.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2, or (at your option)
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License along
18 with this program; if not, write to the Free Software Foundation, Inc.,
19 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
22 #include "sim-assert.h"
29 #ifdef HAVE_SYS_TIME_H
30 #include <sys/time.h> /* needed by sys/resource.h */
32 #ifdef HAVE_SYS_RESOURCE_H
33 #include <sys/resource.h>
35 #include "libiberty.h"
38 /* Global pointer to all state data.
40 struct sim_state *current_state;
42 /* Allocate zero filled memory with xmalloc. */
45 zalloc (unsigned long size)
47 void *memory = (void *) xmalloc (size);
48 memset (memory, 0, size);
58 /* Allocate a sim_state struct. */
61 sim_state_alloc (void)
63 SIM_DESC sd = zalloc (sizeof (struct sim_state));
64 sd->base.magic = SIM_MAGIC_NUMBER;
68 /* Free a sim_state struct. */
71 sim_state_free (SIM_DESC sd)
73 ASSERT (sd->base.magic == SIM_MAGIC_NUMBER);
77 /* Turn VALUE into a string with commas. */
80 sim_add_commas (char *buf, int sizeof_buf, unsigned long value)
83 char *endbuf = buf + sizeof_buf - 1;
93 *--endbuf = (value % 10) + '0';
94 } while ((value /= 10) != 0);
99 /* Make a copy of ARGV.
100 This can also be used to copy the environment vector.
101 The result is a pointer to the malloc'd copy or NULL if insufficient
114 for ( ; argv[argc]; ++argc)
115 len += strlen (argv[argc]) + 1;
118 copy = (char **) malloc ((argc + 1) * sizeof (char *) + len);
122 p = (char *) copy + (argc + 1) * sizeof (char *);
123 for (i = 0; i < argc; ++i)
127 p += strlen (argv[i]) + 1;
134 /* Analyze a bfd and set various fields in the state struct. */
137 sim_analyze_program (sd, prog_bfd)
143 STATE_PROG_BFD (sd) = prog_bfd;
144 STATE_START_ADDR (sd) = bfd_get_start_address (prog_bfd);
146 for (s = prog_bfd->sections; s; s = s->next)
147 if (strcmp (bfd_get_section_name (prog_bfd, s), ".text") == 0)
149 STATE_TEXT_SECTION (sd) = s;
150 STATE_TEXT_START (sd) = bfd_get_section_vma (prog_bfd, s);
151 STATE_TEXT_END (sd) = STATE_TEXT_START (sd) + bfd_section_size (prog_bfd, s);
156 /* Simulator timing support. */
158 /* Called before sim_elapsed_time_since to get a reference point. */
161 sim_elapsed_time_get ()
163 #ifdef HAVE_GETRUSAGE
164 struct rusage mytime;
165 if (getrusage (RUSAGE_SELF, &mytime) == 0)
166 return (SIM_ELAPSED_TIME) (((double) mytime.ru_utime.tv_sec * 1000) + (((double) mytime.ru_utime.tv_usec + 500) / 1000));
170 return (SIM_ELAPSED_TIME) time ((time_t) 0);
177 /* Return the elapsed time in milliseconds since START.
178 The actual time may be cpu usage (prefered) or wall clock. */
181 sim_elapsed_time_since (start)
182 SIM_ELAPSED_TIME start;
184 #ifdef HAVE_GETRUSAGE
185 return sim_elapsed_time_get () - start;
188 return (sim_elapsed_time_get () - start) * 1000;