binutils/od-elf32_avr.c

   1 /* od-avrelf.c -- dump information about an AVR elf object file.
   2    Copyright (C) 2011-2020 Free Software Foundation, Inc.
   3    Written by Senthil Kumar Selvaraj, Atmel.
   4
   5    This file is part of GNU Binutils.
   6
   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 3, or (at your option)
  10    any later version.
  11
  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.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program; if not, write to the Free Software
  19    Foundation, 51 Franklin Street - Fifth Floor, Boston,
  20    MA 02110-1301, USA.  */
  21
  22 #include "sysdep.h"
  23 #include <stddef.h>
  24 #include <time.h>
  25 #include <stdint.h>
  26 #include "safe-ctype.h"
  27 #include "bfd.h"
  28 #include "objdump.h"
  29 #include "bucomm.h"
  30 #include "bfdlink.h"
  31 #include "bfd.h"
  32 #include "elf/external.h"
  33 #include "elf/internal.h"
  34 #include "elf32-avr.h"
  35
  36 /* Index of the options in the options[] array.  */
  37 #define OPT_MEMUSAGE 0
  38 #define OPT_AVRPROP 1
  39
  40 /* List of actions.  */
  41 static struct objdump_private_option options[] =
  42   {
  43     { "mem-usage", 0 },
  44     { "avr-prop",  0},
  45     { NULL, 0 }
  46   };
  47
  48 /* Display help.  */
  49
  50 static void
  51 elf32_avr_help (FILE *stream)
  52 {
  53   fprintf (stream, _("\
  54 For AVR ELF files:\n\
  55   mem-usage   Display memory usage\n\
  56   avr-prop    Display contents of .avr.prop section\n\
  57 "));
  58 }
  59
  60 typedef struct tagDeviceInfo
  61 {
  62     uint32_t flash_start;
  63     uint32_t flash_size;
  64     uint32_t ram_start;
  65     uint32_t ram_size;
  66     uint32_t eeprom_start;
  67     uint32_t eeprom_size;
  68     char * name;
  69 } deviceinfo;
  70
  71
  72 /* Return TRUE if ABFD is handled.  */
  73
  74 static int
  75 elf32_avr_filter (bfd *abfd)
  76 {
  77   return bfd_get_flavour (abfd) == bfd_target_elf_flavour;
  78 }
  79
  80 static char*
  81 elf32_avr_get_note_section_contents (bfd *abfd, bfd_size_type *size)
  82 {
  83   asection *section;
  84
  85   if ((section = bfd_get_section_by_name (abfd, ".note.gnu.avr.deviceinfo")) == NULL)
  86     return NULL;
  87
  88   *size = bfd_section_size (section);
  89   char *contents = (char *) xmalloc (*size);
  90   bfd_get_section_contents (abfd, section, contents, 0, *size);
  91
  92   return contents;
  93 }
  94
  95 static char* elf32_avr_get_note_desc (bfd *abfd, char *contents,
  96         bfd_size_type size)
  97 {
  98   Elf_External_Note *xnp = (Elf_External_Note *) contents;
  99   Elf_Internal_Note in;
 100
 101   if (offsetof (Elf_External_Note, name) > size)
 102     return NULL;
 103
 104   in.type = bfd_get_32 (abfd, xnp->type);
 105   in.namesz = bfd_get_32 (abfd, xnp->namesz);
 106   in.namedata = xnp->name;
 107   if (in.namesz > contents - in.namedata + size)
 108     return NULL;
 109
 110   in.descsz = bfd_get_32 (abfd, xnp->descsz);
 111   in.descdata = in.namedata + align_power (in.namesz, 2);
 112   if (in.descsz != 0
 113         && (in.descdata >= contents + size
 114             || in.descsz > contents - in.descdata + size))
 115     return NULL;
 116
 117   if (strcmp (in.namedata, "AVR") != 0)
 118     return NULL;
 119
 120   return in.descdata;
 121 }
 122
 123 static void
 124 elf32_avr_get_device_info (bfd *abfd, char *description,
 125         deviceinfo *device)
 126 {
 127   if (description == NULL)
 128     return;
 129
 130   const bfd_size_type memory_sizes = 6;
 131
 132   memcpy (device, description, memory_sizes * sizeof(uint32_t));
 133   device->name = NULL;
 134
 135   uint32_t *stroffset_table = ((uint32_t *) description) + memory_sizes;
 136   bfd_size_type stroffset_table_size = bfd_get_32 (abfd, stroffset_table);
 137   char *str_table = ((char *) stroffset_table) + stroffset_table_size;
 138
 139   /* If the only content is the size itself, there's nothing in the table */
 140   if (stroffset_table_size == 4)
 141     return;
 142
 143   /* First entry is the device name index. */
 144   uint32_t device_name_index = bfd_get_32 (abfd, stroffset_table + 1);
 145
 146   device->name = str_table + device_name_index;
 147 }
 148
 149 static void
 150 elf32_avr_get_memory_usage (bfd *abfd,
 151         bfd_size_type *text_usage,
 152         bfd_size_type *data_usage,
 153         bfd_size_type *eeprom_usage)
 154 {
 155
 156   bfd_size_type avr_datasize = 0;
 157   bfd_size_type avr_textsize = 0;
 158   bfd_size_type avr_bsssize = 0;
 159   bfd_size_type bootloadersize = 0;
 160   bfd_size_type noinitsize = 0;
 161   bfd_size_type eepromsize = 0;
 162   asection *section;
 163
 164   if ((section = bfd_get_section_by_name (abfd, ".data")) != NULL)
 165     avr_datasize = bfd_section_size (section);
 166   if ((section = bfd_get_section_by_name (abfd, ".text")) != NULL)
 167     avr_textsize = bfd_section_size (section);
 168   if ((section = bfd_get_section_by_name (abfd, ".bss")) != NULL)
 169     avr_bsssize = bfd_section_size (section);
 170   if ((section = bfd_get_section_by_name (abfd, ".bootloader")) != NULL)
 171     bootloadersize = bfd_section_size (section);
 172   if ((section = bfd_get_section_by_name (abfd, ".noinit")) != NULL)
 173     noinitsize = bfd_section_size (section);
 174   if ((section = bfd_get_section_by_name (abfd, ".eeprom")) != NULL)
 175     eepromsize = bfd_section_size (section);
 176
 177   *text_usage = avr_textsize + avr_datasize + bootloadersize;
 178   *data_usage = avr_datasize + avr_bsssize + noinitsize;
 179   *eeprom_usage = eepromsize;
 180 }
 181
 182 static void
 183 elf32_avr_dump_mem_usage (bfd *abfd)
 184 {
 185   char *description = NULL;
 186   bfd_size_type note_section_size = 0;
 187
 188   deviceinfo device = { 0, 0, 0, 0, 0, 0, NULL };
 189   device.name = "Unknown";
 190
 191   bfd_size_type data_usage = 0;
 192   bfd_size_type text_usage = 0;
 193   bfd_size_type eeprom_usage = 0;
 194
 195   char *contents = elf32_avr_get_note_section_contents (abfd,
 196     &note_section_size);
 197
 198   if (contents != NULL)
 199     {
 200       description = elf32_avr_get_note_desc (abfd, contents, note_section_size);
 201       elf32_avr_get_device_info (abfd, description, &device);
 202     }
 203
 204   elf32_avr_get_memory_usage (abfd, &text_usage, &data_usage,
 205      &eeprom_usage);
 206
 207   printf ("AVR Memory Usage\n"
 208           "----------------\n"
 209           "Device: %s\n\n", device.name);
 210
 211   /* Text size */
 212   printf ("Program:%8ld bytes", text_usage);
 213   if (device.flash_size > 0)
 214     printf (" (%2.1f%% Full)", ((float) text_usage / device.flash_size) * 100);
 215
 216   printf ("\n(.text + .data + .bootloader)\n\n");
 217
 218   /* Data size */
 219   printf ("Data:   %8ld bytes", data_usage);
 220   if (device.ram_size > 0)
 221     printf (" (%2.1f%% Full)", ((float) data_usage / device.ram_size) * 100);
 222
 223   printf ("\n(.data + .bss + .noinit)\n\n");
 224
 225   /* EEPROM size */
 226   if (eeprom_usage > 0)
 227     {
 228       printf ("EEPROM: %8ld bytes", eeprom_usage);
 229       if (device.eeprom_size > 0)
 230         printf (" (%2.1f%% Full)", ((float) eeprom_usage / device.eeprom_size) * 100);
 231
 232       printf ("\n(.eeprom)\n\n");
 233     }
 234
 235   if (contents != NULL)
 236     free (contents);
 237
 238 }
 239
 240 static void
 241 elf32_avr_dump_avr_prop (bfd *abfd)
 242 {
 243   struct avr_property_record_list *r_list;
 244   unsigned int i;
 245
 246   r_list = avr_elf32_load_property_records (abfd);
 247   if (r_list == NULL)
 248     return;
 249
 250   printf ("\nContents of `%s' section:\n\n", r_list->section->name);
 251
 252   printf ("  Version: %d\n", r_list->version);
 253   printf ("  Flags:   %#x\n\n", r_list->flags);
 254
 255   for (i = 0; i < r_list->record_count; ++i)
 256     {
 257       printf ("   %d %s @ %s + %#08lx (%#08lx)\n",
 258               i,
 259               avr_elf32_property_record_name (&r_list->records [i]),
 260               r_list->records [i].section->name,
 261               r_list->records [i].offset,
 262               (bfd_section_vma (r_list->records [i].section)
 263                + r_list->records [i].offset));
 264       switch (r_list->records [i].type)
 265         {
 266         case RECORD_ORG:
 267           /* Nothing else to print.  */
 268           break;
 269         case RECORD_ORG_AND_FILL:
 270           printf ("     Fill: %#08lx\n",
 271                   r_list->records [i].data.org.fill);
 272           break;
 273         case RECORD_ALIGN:
 274           printf ("     Align: %#08lx\n",
 275                   r_list->records [i].data.align.bytes);
 276           break;
 277         case RECORD_ALIGN_AND_FILL:
 278           printf ("     Align: %#08lx, Fill: %#08lx\n",
 279                   r_list->records [i].data.align.bytes,
 280                   r_list->records [i].data.align.fill);
 281           break;
 282         }
 283     }
 284
 285   free (r_list);
 286 }
 287
 288 static void
 289 elf32_avr_dump (bfd *abfd)
 290 {
 291   if (options[OPT_MEMUSAGE].selected)
 292     elf32_avr_dump_mem_usage (abfd);
 293   if (options[OPT_AVRPROP].selected)
 294     elf32_avr_dump_avr_prop (abfd);
 295 }
 296
 297 const struct objdump_private_desc objdump_private_desc_elf32_avr =
 298   {
 299     elf32_avr_help,
 300     elf32_avr_filter,
 301     elf32_avr_dump,
 302     options
 303   };