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/* Utility to load a file into the simulator.

   Copyright (C) 1997 Free Software Foundation, Inc.

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.  */

/* This is a standalone loader, independent of the sim-basic.h machinery,

   as it is used by simulators that don't use it [though that doesn't mean

   to suggest that they shouldn't :-)].  */

#include "config.h"

#include "ansidecl.h"

#include <stdio.h> /* for NULL */

#ifdef ANSI_PROTOTYPES

#include <stdarg.h>

#else

#include <varargs.h>

#endif

#ifdef HAVE_STDLIB_H

#include <stdlib.h>

#endif

#include <time.h>

#include "sim-basics.h"

#include "bfd.h"

#include "sim-utils.h"

#include "gdb/callback.h"

#include "gdb/remote-sim.h"

static void eprintf PARAMS ((host_callback *, const char *, ...));

static void xprintf PARAMS ((host_callback *, const char *, ...));

static void report_transfer_performance

  PARAMS ((host_callback *, unsigned long, time_t, time_t));

static void xprintf_bfd_vma PARAMS ((host_callback *, bfd_vma));

/* Load program PROG into the simulator using the function DO_LOAD.

   If PROG_BFD is non-NULL, the file has already been opened.

   If VERBOSE_P is non-zero statistics are printed of each loaded section

   and the transfer rate (for consistency with gdb).

   If LMA_P is non-zero the program sections are loaded at the LMA

   rather than the VMA

   If this fails an error message is printed and NULL is returned.

   If it succeeds the bfd is returned.

   NOTE: For historical reasons, older hardware simulators incorrectly

   write the program sections at LMA interpreted as a virtual address.

   This is still accommodated for backward compatibility reasons. */

bfd *

sim_load_file (sd, myname, callback, prog, prog_bfd, verbose_p, lma_p, do_write)

     SIM_DESC sd;

     const char *myname;

     host_callback *callback;

     char *prog;

     bfd *prog_bfd;

     int verbose_p;

     int lma_p;

     sim_write_fn do_write;

{

  asection *s;

  /* Record separately as we don't want to close PROG_BFD if it was passed.  */

  bfd *result_bfd;

  time_t start_time = 0; /* Start and end times of download */

  time_t end_time = 0;

  unsigned long data_count = 0;  /* Number of bytes transferred to memory */

  int found_loadable_section;

  if (prog_bfd != NULL)

    result_bfd = prog_bfd;

  else

    {

      result_bfd = bfd_openr (prog, 0);

      if (result_bfd == NULL)

        {

          eprintf (callback, "%s: can't open \"%s\": %s\n",

                   myname, prog, bfd_errmsg (bfd_get_error ()));

          return NULL;

        }

    }

  if (!bfd_check_format (result_bfd, bfd_object))

    {

      eprintf (callback, "%s: \"%s\" is not an object file: %s\n",

               myname, prog, bfd_errmsg (bfd_get_error ()));

      /* Only close if we opened it.  */

      if (prog_bfd == NULL)

        bfd_close (result_bfd);

      return NULL;

    }

  if (verbose_p)

    start_time = time (NULL);

  found_loadable_section = 0;

  for (s = result_bfd->sections; s; s = s->next)

    {

      if (s->flags & SEC_LOAD)

        {

          bfd_size_type size;

          size = bfd_get_section_size_before_reloc (s);

          if (size > 0)

            {

              char *buffer;

              bfd_vma lma;

              buffer = malloc (size);

              if (buffer == NULL)

                {

                  eprintf (callback,

                           "%s: insufficient memory to load \"%s\"\n",

                           myname, prog);

                  /* Only close if we opened it.  */

                  if (prog_bfd == NULL)

                    bfd_close (result_bfd);

                  return NULL;

                }

              if (lma_p)

                lma = bfd_section_lma (result_bfd, s);

              else

                lma = bfd_section_vma (result_bfd, s);

              if (verbose_p)

                {

                  xprintf (callback, "Loading section %s, size 0x%lx %s ",

                           bfd_get_section_name (result_bfd, s),

                           (unsigned long) size,

                           (lma_p ? "lma" : "vma"));

                  xprintf_bfd_vma (callback, lma);

                  xprintf (callback, "\n");

                }

              data_count += size;

              bfd_get_section_contents (result_bfd, s, buffer, 0, size);

              do_write (sd, lma, buffer, size);

              found_loadable_section = 1;

              free (buffer);

            }

        }

    }

  if (!found_loadable_section)

    {

      eprintf (callback,

               "%s: no loadable sections \"%s\"\n",

               myname, prog);

      return NULL;

    }

  if (verbose_p)

    {

      end_time = time (NULL);

      xprintf (callback, "Start address ");

      xprintf_bfd_vma (callback, bfd_get_start_address (result_bfd));

      xprintf (callback, "\n");

      report_transfer_performance (callback, data_count, start_time, end_time);

    }

  bfd_cache_close (result_bfd);

  return result_bfd;

}

static void

xprintf VPARAMS ((host_callback *callback, const char *fmt, ...))

{

#ifndef ANSI_PROTOTYPES

  host_callback *callback;

  char *fmt;

#endif

  va_list ap;

  VA_START (ap, fmt);

#ifndef ANSI_PROTOTYPES

  callback = va_arg (ap, host_callback *);

  fmt = va_arg (ap, char *);

#endif

  (*callback->vprintf_filtered) (callback, fmt, ap);

  va_end (ap);

}

static void

eprintf VPARAMS ((host_callback *callback, const char *fmt, ...))

{

#ifndef ANSI_PROTOTYPES

  host_callback *callback;

  char *fmt;

#endif

  va_list ap;

  VA_START (ap, fmt);

#ifndef ANSI_PROTOTYPES

  callback = va_arg (ap, host_callback *);

  fmt = va_arg (ap, char *);

#endif

  (*callback->evprintf_filtered) (callback, fmt, ap);

  va_end (ap);

}

/* Report how fast the transfer went. */

static void

report_transfer_performance (callback, data_count, start_time, end_time)

     host_callback *callback;

     unsigned long data_count;

     time_t start_time, end_time;

{

  xprintf (callback, "Transfer rate: ");

  if (end_time != start_time)

    xprintf (callback, "%ld bits/sec",

             (data_count * 8) / (end_time - start_time));

  else

    xprintf (callback, "%ld bits in <1 sec", (data_count * 8));

  xprintf (callback, ".\n");

}

/* Print a bfd_vma.

   This is intended to handle the vagaries of 32 vs 64 bits, etc.  */

static void

xprintf_bfd_vma (callback, vma)

     host_callback *callback;

     bfd_vma vma;

{

  /* FIXME: for now */

  xprintf (callback, "0x%lx", (unsigned long) vma);

}