1 /* od-avrelf.c -- dump information about an AVR elf object file. 2 Copyright (C) 2011-2016 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_get_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 (abfd, section); 166 if ((section = bfd_get_section_by_name (abfd, ".text")) != NULL) 167 avr_textsize = bfd_section_size (abfd, section); 168 if ((section = bfd_get_section_by_name (abfd, ".bss")) != NULL) 169 avr_bsssize = bfd_section_size (abfd, section); 170 if ((section = bfd_get_section_by_name (abfd, ".bootloader")) != NULL) 171 bootloadersize = bfd_section_size (abfd, section); 172 if ((section = bfd_get_section_by_name (abfd, ".noinit")) != NULL) 173 noinitsize = bfd_section_size (abfd, section); 174 if ((section = bfd_get_section_by_name (abfd, ".eeprom")) != NULL) 175 eepromsize = bfd_section_size (abfd, 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 ¬e_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_get_section_vma (abfd, 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 }; 304
