binutils-gdb/binutils/od-elf32_avr.c

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/* od-avrelf.c -- dump information about an AVR elf object file.
Copyright (C) 2011-2014 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"
/* Index of the options in the options[] array. */
#define OPT_MEMUSAGE 0
/* List of actions. */
static struct objdump_private_option options[] =
{
{ "mem-usage", 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\
"));
}
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;
if ((section = bfd_get_section_by_name (abfd, ".note.gnu.avr.deviceinfo")) == NULL)
return NULL;
*size = bfd_get_section_size (section);
char *contents = (char *) xmalloc (*size);
bfd_get_section_contents (abfd, section, contents, 0, *size);
return contents;
}
static char* elf32_avr_get_note_desc (bfd *abfd, char *contents,
bfd_size_type size)
{
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;
in.descsz = bfd_get_32 (abfd, xnp->descsz);
in.descdata = in.namedata + align_power (in.namesz, 2);
if (in.descsz != 0
&& (in.descdata >= contents + size
|| in.descsz > contents - in.descdata + size))
return NULL;
if (strcmp (in.namedata, "AVR") != 0)
return NULL;
return in.descdata;
}
static void
elf32_avr_get_device_info (bfd *abfd, char *description,
deviceinfo *device)
{
if (description == NULL)
return;
const bfd_size_type memory_sizes = 6;
memcpy (device, description, memory_sizes * sizeof(uint32_t));
device->name = NULL;
uint32_t *stroffset_table = ((uint32_t *) description) + memory_sizes;
bfd_size_type stroffset_table_size = bfd_get_32 (abfd, stroffset_table);
char *str_table = ((char *) stroffset_table) + stroffset_table_size;
/* If the only content is the size itself, there's nothing in the table */
if (stroffset_table_size == 4)
return;
/* First entry is the device name index. */
uint32_t device_name_index = bfd_get_32 (abfd, stroffset_table + 1);
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;
asection *section;
if ((section = bfd_get_section_by_name (abfd, ".data")) != NULL)
avr_datasize = bfd_section_size (abfd, section);
if ((section = bfd_get_section_by_name (abfd, ".text")) != NULL)
avr_textsize = bfd_section_size (abfd, section);
if ((section = bfd_get_section_by_name (abfd, ".bss")) != NULL)
avr_bsssize = bfd_section_size (abfd, section);
if ((section = bfd_get_section_by_name (abfd, ".bootloader")) != NULL)
bootloadersize = bfd_section_size (abfd, section);
if ((section = bfd_get_section_by_name (abfd, ".noinit")) != NULL)
noinitsize = bfd_section_size (abfd, section);
if ((section = bfd_get_section_by_name (abfd, ".eeprom")) != NULL)
eepromsize = bfd_section_size (abfd, section);
*text_usage = avr_textsize + avr_datasize + bootloadersize;
*data_usage = avr_datasize + avr_bsssize + noinitsize;
*eeprom_usage = eepromsize;
}
static void
elf32_avr_dump_mem_usage (bfd *abfd)
{
char *description = NULL;
bfd_size_type note_section_size = 0;
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,
&note_section_size);
if (contents != NULL)
{
description = elf32_avr_get_note_desc (abfd, contents, note_section_size);
elf32_avr_get_device_info (abfd, description, &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:%8ld 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: %8ld 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: %8ld 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 (bfd *abfd)
{
if (options[OPT_MEMUSAGE].selected)
elf32_avr_dump_mem_usage (abfd);
}
const struct objdump_private_desc objdump_private_desc_elf32_avr =
{
elf32_avr_help,
elf32_avr_filter,
elf32_avr_dump,
options
};