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/* 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
#ifdef HAVE_STRING_H
#include <string.h>
#else
#ifdef HAVE_STRINGS_H
#include <strings.h>
#endif
#endif
#include "libiberty.h"
#include "bfd.h"
#include "sim-utils.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;
int argc;
int len;
char **copy;
if (argv == NULL)
return NULL;
/* the vector */
for (argc = 0; argv[argc] != NULL; argc++);
copy = (char **) malloc ((argc + 1) * sizeof (char *));
if (copy == NULL)
return NULL;
/* the strings */
for (argc = 0; argv[argc] != NULL; argc++)
{
int len = strlen (argv[argc]);
copy[argc] = malloc (sizeof (char *) * (len + 1));
if (copy[argc] == NULL)
{
freeargv (copy);
return NULL;
}
strcpy (copy[argc], argv[argc]);
}
copy[argc] = NULL;
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;
SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER);
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
}
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