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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 - xmalloc aborts of the
allocation fails. */
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 (SIM_OPEN_KIND kind,
host_callback *callback)
{
int cpu_nr;
SIM_DESC sd = ZALLOC (struct sim_state);
STATE_MAGIC (sd) = SIM_MAGIC_NUMBER;
STATE_CALLBACK (sd) = callback;
STATE_OPEN_KIND (sd) = kind;
for (cpu_nr = 0; cpu_nr < MAX_NR_PROCESSORS; cpu_nr++)
CPU_STATE (STATE_CPU (sd, cpu_nr)) = sd;
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;
}
/* Analyze a prog_name/prog_bfd and set various fields in the state
struct. */
SIM_RC
sim_analyze_program (sd, prog_name, prog_bfd)
SIM_DESC sd;
char *prog_name;
bfd *prog_bfd;
{
asection *s;
SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER);
if (prog_bfd != NULL)
{
if (prog_bfd == STATE_PROG_BFD (sd))
/* already analyzed */
return SIM_RC_OK;
else
/* duplicate needed, save the name of the file to be re-opened */
prog_name = bfd_get_filename (prog_bfd);
}
/* do we need to duplicate anything? */
if (prog_name == NULL)
return SIM_RC_OK;
/* open a new copy of the prog_bfd */
prog_bfd = bfd_openr (prog_name, STATE_TARGET (sd));
if (prog_bfd == NULL)
{
sim_io_eprintf (sd, "%s: can't open \"%s\": %s\n",
STATE_MY_NAME (sd),
prog_name,
bfd_errmsg (bfd_get_error ()));
return SIM_RC_FAIL;
}
if (!bfd_check_format (prog_bfd, bfd_object))
{
sim_io_eprintf (sd, "%s: \"%s\" is not an object file: %s\n",
STATE_MY_NAME (sd),
prog_name,
bfd_errmsg (bfd_get_error ()));
bfd_close (prog_bfd);
return SIM_RC_FAIL;
}
if (STATE_ARCHITECTURE (sd) != NULL)
bfd_set_arch_info (prog_bfd, STATE_ARCHITECTURE (sd));
/* update the sim structure */
if (STATE_PROG_BFD (sd) != NULL)
bfd_close (STATE_PROG_BFD (sd));
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;
}
return SIM_RC_OK;
}
/* 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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