sim/common/sim-load.c

   1 /* Utility to load a file into the simulator.
   2    Copyright (C) 1997, 1998, 2001, 2002, 2004, 2007, 2008, 2009, 2010
   3    Free Software Foundation, Inc.
   4
   5 This program is free software; you can redistribute it and/or modify
   6 it under the terms of the GNU General Public License as published by
   7 the Free Software Foundation; either version 3 of the License, or
   8 (at your option) any later version.
   9
  10 This program is distributed in the hope that it will be useful,
  11 but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 GNU General Public License for more details.
  14
  15 You should have received a copy of the GNU General Public License
  16 along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  17
  18 /* This is a standalone loader, independent of the sim-basic.h machinery,
  19    as it is used by simulators that don't use it [though that doesn't mean
  20    to suggest that they shouldn't :-)].  */
  21
  22 #ifdef HAVE_CONFIG_H
  23 #include "cconfig.h"
  24 #endif
  25 #include "ansidecl.h"
  26 #include <stdio.h> /* for NULL */
  27 #include <stdarg.h>
  28 #ifdef HAVE_STDLIB_H
  29 #include <stdlib.h>
  30 #endif
  31 #include <time.h>
  32
  33 #include "sim-basics.h"
  34 #include "bfd.h"
  35 #include "sim-utils.h"
  36
  37 #include "gdb/callback.h"
  38 #include "gdb/remote-sim.h"
  39
  40 static void eprintf PARAMS ((host_callback *, const char *, ...));
  41 static void xprintf PARAMS ((host_callback *, const char *, ...));
  42 static void report_transfer_performance
  43   PARAMS ((host_callback *, unsigned long, time_t, time_t));
  44 static void xprintf_bfd_vma PARAMS ((host_callback *, bfd_vma));
  45
  46 /* Load program PROG into the simulator using the function DO_LOAD.
  47    If PROG_BFD is non-NULL, the file has already been opened.
  48    If VERBOSE_P is non-zero statistics are printed of each loaded section
  49    and the transfer rate (for consistency with gdb).
  50    If LMA_P is non-zero the program sections are loaded at the LMA
  51    rather than the VMA
  52    If this fails an error message is printed and NULL is returned.
  53    If it succeeds the bfd is returned.
  54    NOTE: For historical reasons, older hardware simulators incorrectly
  55    write the program sections at LMA interpreted as a virtual address.
  56    This is still accommodated for backward compatibility reasons. */
  57
  58
  59 bfd *
  60 sim_load_file (sd, myname, callback, prog, prog_bfd, verbose_p, lma_p, do_write)
  61      SIM_DESC sd;
  62      const char *myname;
  63      host_callback *callback;
  64      char *prog;
  65      bfd *prog_bfd;
  66      int verbose_p;
  67      int lma_p;
  68      sim_write_fn do_write;
  69 {
  70   asection *s;
  71   /* Record separately as we don't want to close PROG_BFD if it was passed.  */
  72   bfd *result_bfd;
  73   time_t start_time = 0;        /* Start and end times of download */
  74   time_t end_time = 0;
  75   unsigned long data_count = 0; /* Number of bytes transferred to memory */
  76   int found_loadable_section;
  77
  78   if (prog_bfd != NULL)
  79     result_bfd = prog_bfd;
  80   else
  81     {
  82       result_bfd = bfd_openr (prog, 0);
  83       if (result_bfd == NULL)
  84         {
  85           eprintf (callback, "%s: can't open \"%s\": %s\n",
  86                    myname, prog, bfd_errmsg (bfd_get_error ()));
  87           return NULL;
  88         }
  89     }
  90
  91   if (!bfd_check_format (result_bfd, bfd_object))
  92     {
  93       eprintf (callback, "%s: \"%s\" is not an object file: %s\n",
  94                myname, prog, bfd_errmsg (bfd_get_error ()));
  95       /* Only close if we opened it.  */
  96       if (prog_bfd == NULL)
  97         bfd_close (result_bfd);
  98       return NULL;
  99     }
 100
 101   if (verbose_p)
 102     start_time = time (NULL);
 103
 104   found_loadable_section = 0;
 105   for (s = result_bfd->sections; s; s = s->next)
 106     {
 107       if (s->flags & SEC_LOAD)
 108         {
 109           bfd_size_type size;
 110
 111           size = bfd_get_section_size (s);
 112           if (size > 0)
 113             {
 114               char *buffer;
 115               bfd_vma lma;
 116
 117               buffer = malloc (size);
 118               if (buffer == NULL)
 119                 {
 120                   eprintf (callback,
 121                            "%s: insufficient memory to load \"%s\"\n",
 122                            myname, prog);
 123                   /* Only close if we opened it.  */
 124                   if (prog_bfd == NULL)
 125                     bfd_close (result_bfd);
 126                   return NULL;
 127                 }
 128               if (lma_p)
 129                 lma = bfd_section_lma (result_bfd, s);
 130               else
 131                 lma = bfd_section_vma (result_bfd, s);
 132               if (verbose_p)
 133                 {
 134                   xprintf (callback, "Loading section %s, size 0x%lx %s ",
 135                            bfd_get_section_name (result_bfd, s),
 136                            (unsigned long) size,
 137                            (lma_p ? "lma" : "vma"));
 138                   xprintf_bfd_vma (callback, lma);
 139                   xprintf (callback, "\n");
 140                 }
 141               data_count += size;
 142               bfd_get_section_contents (result_bfd, s, buffer, 0, size);
 143               do_write (sd, lma, buffer, size);
 144               found_loadable_section = 1;
 145               free (buffer);
 146             }
 147         }
 148     }
 149
 150   if (!found_loadable_section)
 151     {
 152       eprintf (callback,
 153                "%s: no loadable sections \"%s\"\n",
 154                myname, prog);
 155       return NULL;
 156     }
 157
 158   if (verbose_p)
 159     {
 160       end_time = time (NULL);
 161       xprintf (callback, "Start address ");
 162       xprintf_bfd_vma (callback, bfd_get_start_address (result_bfd));
 163       xprintf (callback, "\n");
 164       report_transfer_performance (callback, data_count, start_time, end_time);
 165     }
 166
 167   bfd_cache_close (result_bfd);
 168
 169   return result_bfd;
 170 }
 171
 172 static void
 173 xprintf VPARAMS ((host_callback *callback, const char *fmt, ...))
 174 {
 175   va_list ap;
 176
 177   VA_START (ap, fmt);
 178
 179   (*callback->vprintf_filtered) (callback, fmt, ap);
 180
 181   va_end (ap);
 182 }
 183
 184 static void
 185 eprintf VPARAMS ((host_callback *callback, const char *fmt, ...))
 186 {
 187   va_list ap;
 188
 189   VA_START (ap, fmt);
 190
 191   (*callback->evprintf_filtered) (callback, fmt, ap);
 192
 193   va_end (ap);
 194 }
 195
 196 /* Report how fast the transfer went. */
 197
 198 static void
 199 report_transfer_performance (callback, data_count, start_time, end_time)
 200      host_callback *callback;
 201      unsigned long data_count;
 202      time_t start_time, end_time;
 203 {
 204   xprintf (callback, "Transfer rate: ");
 205   if (end_time != start_time)
 206     xprintf (callback, "%ld bits/sec",
 207              (data_count * 8) / (end_time - start_time));
 208   else
 209     xprintf (callback, "%ld bits in <1 sec", (data_count * 8));
 210   xprintf (callback, ".\n");
 211 }
 212
 213 /* Print a bfd_vma.
 214    This is intended to handle the vagaries of 32 vs 64 bits, etc.  */
 215
 216 static void
 217 xprintf_bfd_vma (callback, vma)
 218      host_callback *callback;
 219      bfd_vma vma;
 220 {
 221   /* FIXME: for now */
 222   xprintf (callback, "0x%lx", (unsigned long) vma);
 223 }