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- /* od-avrelf.c -- dump information about an AVR elf object file.
- Copyright (C) 2011-2022 Free Software Foundation, Inc.
- Written by Senthil Kumar Selvaraj, Atmel.
- This file is part of GNU Binutils.
- 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 3, 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, 51 Franklin Street - Fifth Floor, Boston,
- MA 02110-1301, USA. */
- #include "sysdep.h"
- #include <stddef.h>
- #include <time.h>
- #include <stdint.h>
- #include "safe-ctype.h"
- #include "bfd.h"
- #include "objdump.h"
- #include "bucomm.h"
- #include "bfdlink.h"
- #include "bfd.h"
- #include "elf/external.h"
- #include "elf/internal.h"
- #include "elf32-avr.h"
- /* Index of the options in the options[] array. */
- #define OPT_MEMUSAGE 0
- #define OPT_AVRPROP 1
- /* List of actions. */
- static struct objdump_private_option options[] =
- {
- { "mem-usage", 0 },
- { "avr-prop", 0},
- { NULL, 0 }
- };
- /* Display help. */
- static void
- elf32_avr_help (FILE *stream)
- {
- fprintf (stream, _("\
- For AVR ELF files:\n\
- mem-usage Display memory usage\n\
- avr-prop Display contents of .avr.prop section\n\
- "));
- }
- typedef struct tagDeviceInfo
- {
- uint32_t flash_start;
- uint32_t flash_size;
- uint32_t ram_start;
- uint32_t ram_size;
- uint32_t eeprom_start;
- uint32_t eeprom_size;
- char * name;
- } deviceinfo;
- /* Return TRUE if ABFD is handled. */
- static int
- elf32_avr_filter (bfd *abfd)
- {
- return bfd_get_flavour (abfd) == bfd_target_elf_flavour;
- }
- static char *
- elf32_avr_get_note_section_contents (bfd *abfd, bfd_size_type *size)
- {
- asection *section;
- bfd_byte *contents;
- section = bfd_get_section_by_name (abfd, ".note.gnu.avr.deviceinfo");
- if (section == NULL)
- return NULL;
- if (!bfd_malloc_and_get_section (abfd, section, &contents))
- {
- free (contents);
- contents = NULL;
- }
- *size = bfd_section_size (section);
- return (char *) contents;
- }
- static char *
- elf32_avr_get_note_desc (bfd *abfd, char *contents, bfd_size_type size,
- bfd_size_type *descsz)
- {
- Elf_External_Note *xnp = (Elf_External_Note *) contents;
- Elf_Internal_Note in;
- if (offsetof (Elf_External_Note, name) > size)
- return NULL;
- in.type = bfd_get_32 (abfd, xnp->type);
- in.namesz = bfd_get_32 (abfd, xnp->namesz);
- in.namedata = xnp->name;
- if (in.namesz > contents - in.namedata + size)
- return NULL;
- if (in.namesz != 4 || strcmp (in.namedata, "AVR") != 0)
- return NULL;
- in.descsz = bfd_get_32 (abfd, xnp->descsz);
- in.descdata = in.namedata + align_power (in.namesz, 2);
- if (in.descsz < 6 * sizeof (uint32_t)
- || in.descdata >= contents + size
- || in.descsz > contents - in.descdata + size)
- return NULL;
- /* If the note has a string table, ensure it is 0 terminated. */
- if (in.descsz > 8 * sizeof (uint32_t))
- in.descdata[in.descsz - 1] = 0;
- *descsz = in.descsz;
- return in.descdata;
- }
- static void
- elf32_avr_get_device_info (bfd *abfd, char *description,
- bfd_size_type desc_size, deviceinfo *device)
- {
- if (description == NULL)
- return;
- const bfd_size_type memory_sizes = 6;
- memcpy (device, description, memory_sizes * sizeof (uint32_t));
- desc_size -= memory_sizes * sizeof (uint32_t);
- if (desc_size < 8)
- return;
- uint32_t *stroffset_table = (uint32_t *) description + memory_sizes;
- bfd_size_type stroffset_table_size = bfd_get_32 (abfd, stroffset_table);
- /* If the only content is the size itself, there's nothing in the table */
- if (stroffset_table_size < 8)
- return;
- if (desc_size <= stroffset_table_size)
- return;
- desc_size -= stroffset_table_size;
- /* First entry is the device name index. */
- uint32_t device_name_index = bfd_get_32 (abfd, stroffset_table + 1);
- if (device_name_index >= desc_size)
- return;
- char *str_table = (char *) stroffset_table + stroffset_table_size;
- device->name = str_table + device_name_index;
- }
- static void
- elf32_avr_get_memory_usage (bfd *abfd,
- bfd_size_type *text_usage,
- bfd_size_type *data_usage,
- bfd_size_type *eeprom_usage)
- {
- bfd_size_type avr_datasize = 0;
- bfd_size_type avr_textsize = 0;
- bfd_size_type avr_bsssize = 0;
- bfd_size_type bootloadersize = 0;
- bfd_size_type noinitsize = 0;
- bfd_size_type eepromsize = 0;
- bfd_size_type res;
- asection *section;
- if ((section = bfd_get_section_by_name (abfd, ".data")) != NULL)
- avr_datasize = bfd_section_size (section);
- if ((section = bfd_get_section_by_name (abfd, ".text")) != NULL)
- avr_textsize = bfd_section_size (section);
- if ((section = bfd_get_section_by_name (abfd, ".bss")) != NULL)
- avr_bsssize = bfd_section_size (section);
- if ((section = bfd_get_section_by_name (abfd, ".bootloader")) != NULL)
- bootloadersize = bfd_section_size (section);
- if ((section = bfd_get_section_by_name (abfd, ".noinit")) != NULL)
- noinitsize = bfd_section_size (section);
- if ((section = bfd_get_section_by_name (abfd, ".eeprom")) != NULL)
- eepromsize = bfd_section_size (section);
- /* PR 27285: Check for overflow. */
- res = avr_textsize + avr_datasize;
- if (res < avr_textsize || res < avr_datasize)
- {
- fprintf (stderr, _("Warning: textsize (%#lx) + datasize (%#lx) overflows size type\n"),
- (long) avr_textsize, (long) avr_datasize);
- res = (bfd_size_type) -1;
- }
- else
- {
- bfd_size_type res2;
- res2 = res + bootloadersize;
- if (res2 < bootloadersize || res2 < res)
- {
- fprintf (stderr, _("Warning: textsize (%#lx) + datasize (%#lx) + bootloadersize (%#lx) overflows size type\n"),
- (long) avr_textsize, (long) avr_datasize, (long) bootloadersize);
- res2 = (bfd_size_type) -1;
- }
- res = res2;
- }
- *text_usage = res;
- res = avr_datasize + avr_bsssize;
- if (res < avr_datasize || res < avr_bsssize)
- {
- fprintf (stderr, _("Warning: datatsize (%#lx) + bssssize (%#lx) overflows size type\n"),
- (long) avr_datasize, (long) avr_bsssize);
- res = (bfd_size_type) -1;
- }
- else
- {
- bfd_size_type res2;
- res2 = res + noinitsize;
- if (res2 < res || res2 < noinitsize)
- {
- fprintf (stderr, _("Warning: datasize (%#lx) + bsssize (%#lx) + noinitsize (%#lx) overflows size type\n"),
- (long) avr_datasize, (long) avr_bsssize, (long) noinitsize);
- res2 = (bfd_size_type) -1;
- }
- res = res2;
- }
- *data_usage = res;
- *eeprom_usage = eepromsize;
- }
- static void
- elf32_avr_dump_mem_usage (bfd *abfd)
- {
- char *description = NULL;
- bfd_size_type sec_size, desc_size;
- deviceinfo device = { 0, 0, 0, 0, 0, 0, NULL };
- device.name = "Unknown";
- bfd_size_type data_usage = 0;
- bfd_size_type text_usage = 0;
- bfd_size_type eeprom_usage = 0;
- char *contents = elf32_avr_get_note_section_contents (abfd, &sec_size);
- if (contents != NULL)
- {
- description = elf32_avr_get_note_desc (abfd, contents, sec_size,
- &desc_size);
- elf32_avr_get_device_info (abfd, description, desc_size, &device);
- }
- elf32_avr_get_memory_usage (abfd, &text_usage, &data_usage,
- &eeprom_usage);
- printf ("AVR Memory Usage\n"
- "----------------\n"
- "Device: %s\n\n", device.name);
- /* Text size */
- printf ("Program:%8lu bytes", text_usage);
- if (device.flash_size > 0)
- printf (" (%2.1f%% Full)", ((float) text_usage / device.flash_size) * 100);
- printf ("\n(.text + .data + .bootloader)\n\n");
- /* Data size */
- printf ("Data: %8lu bytes", data_usage);
- if (device.ram_size > 0)
- printf (" (%2.1f%% Full)", ((float) data_usage / device.ram_size) * 100);
- printf ("\n(.data + .bss + .noinit)\n\n");
- /* EEPROM size */
- if (eeprom_usage > 0)
- {
- printf ("EEPROM: %8lu bytes", eeprom_usage);
- if (device.eeprom_size > 0)
- printf (" (%2.1f%% Full)", ((float) eeprom_usage / device.eeprom_size) * 100);
- printf ("\n(.eeprom)\n\n");
- }
- if (contents != NULL)
- free (contents);
- }
- static void
- elf32_avr_dump_avr_prop (bfd *abfd)
- {
- struct avr_property_record_list *r_list;
- unsigned int i;
- r_list = avr_elf32_load_property_records (abfd);
- if (r_list == NULL)
- return;
- printf ("\nContents of `%s' section:\n\n", r_list->section->name);
- printf (" Version: %d\n", r_list->version);
- printf (" Flags: %#x\n\n", r_list->flags);
- for (i = 0; i < r_list->record_count; ++i)
- {
- printf (" %d %s @ %s + %#08lx (%#08lx)\n",
- i,
- avr_elf32_property_record_name (&r_list->records [i]),
- r_list->records [i].section->name,
- r_list->records [i].offset,
- (bfd_section_vma (r_list->records [i].section)
- + r_list->records [i].offset));
- switch (r_list->records [i].type)
- {
- case RECORD_ORG:
- /* Nothing else to print. */
- break;
- case RECORD_ORG_AND_FILL:
- printf (" Fill: %#08lx\n",
- r_list->records [i].data.org.fill);
- break;
- case RECORD_ALIGN:
- printf (" Align: %#08lx\n",
- r_list->records [i].data.align.bytes);
- break;
- case RECORD_ALIGN_AND_FILL:
- printf (" Align: %#08lx, Fill: %#08lx\n",
- r_list->records [i].data.align.bytes,
- r_list->records [i].data.align.fill);
- break;
- }
- }
- free (r_list);
- }
- static void
- elf32_avr_dump (bfd *abfd)
- {
- if (options[OPT_MEMUSAGE].selected)
- elf32_avr_dump_mem_usage (abfd);
- if (options[OPT_AVRPROP].selected)
- elf32_avr_dump_avr_prop (abfd);
- }
- const struct objdump_private_desc objdump_private_desc_elf32_avr =
- {
- elf32_avr_help,
- elf32_avr_filter,
- elf32_avr_dump,
- options
- };
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