src/readelf.c

/* Print information from ELF file in human-readable form.
   Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005 Red Hat, Inc.
   Written by Ulrich Drepper <drepper@redhat.com>, 1999.

   This program is Open Source software; you can redistribute it and/or
   modify it under the terms of the Open Software License version 1.0 as
   published by the Open Source Initiative.

   You should have received a copy of the Open Software License along
   with this program; if not, you may obtain a copy of the Open Software
   License version 1.0 from http://www.opensource.org/licenses/osl.php or
   by writing the Open Source Initiative c/o Lawrence Rosen, Esq.,
   3001 King Ranch Road, Ukiah, CA 95482.   */

#ifdef HAVE_CONFIG_H
# include <config.h>
#endif

#include <argp.h>
#include <assert.h>
#include <dwarf.h>
#include <errno.h>
#include <error.h>
#include <fcntl.h>
#include <gelf.h>
#include <inttypes.h>
#include <langinfo.h>
#include <libdw.h>
#include <libintl.h>
#include <locale.h>
#include <stdbool.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
#include <sys/param.h>

#include <system.h>
#include "../libebl/libeblP.h"
#include "../libdw/libdwP.h"
#include "../libdw/memory-access.h"


/* Name and version of program.  */
static void print_version (FILE *stream, struct argp_state *state);
void (*argp_program_version_hook) (FILE *, struct argp_state *) = print_version;

/* Bug report address.  */
const char *argp_program_bug_address = PACKAGE_BUGREPORT;

/* Definitions of arguments for argp functions.  */
static const struct argp_option options[] =
{
  { NULL, 0, NULL, 0, N_("Output selection:"), 0 },
  { "all", 'a', NULL, 0, N_("Equivalent to: -h -l"), 0 },
  { "dynamic", 'd', NULL, 0, N_("Display the dynamic segment"), 0 },
  { "file-header", 'h', NULL, 0, N_("Display the ELF file header"), 0 },
  { "histogram", 'I', NULL, 0,
    N_("Display histogram of bucket list lengths"), 0 },
  { "program-headers", 'l', NULL, 0, N_("Display the program headers"), 0 },
  { "relocs", 'r', NULL, 0, N_("Display relocations"), 0 },
  { "section-headers", 'S', NULL, 0, N_("Display the sections' header"), 0 },
  { "symbols", 's', NULL, 0, N_("Display the symbol table"), 0 },
  { "version-info", 'V', NULL, 0, N_("Display versioning information"), 0 },
  { "debug-dump", 'w', "SECTION", OPTION_ARG_OPTIONAL,
    N_("Display DWARF section content.  SECTION can be one of abbrev, "
       "aranges, frame, info, loc, line, ranges, pubnames, str, or macinfo."),
    0 },
  { "notes", 'n', NULL, 0, N_("Display the core notes"), 0 },
  { "arch-specific", 'A', NULL, 0,
    N_("Display architecture specific information (if any)"), 0 },

  { NULL, 0, NULL, 0, N_("Output control:"), 0 },

  { NULL, 0, NULL, 0, NULL, 0 }
};

/* Short description of program.  */
static const char doc[] = N_("\
Print information from ELF file in human-readable form.");

/* Strings for arguments in help texts.  */
static const char args_doc[] = N_("FILE...");

/* Prototype for option handler.  */
static error_t parse_opt (int key, char *arg, struct argp_state *state);

/* Data structure to communicate with argp functions.  */
static struct argp argp =
{
  options, parse_opt, args_doc, doc, NULL, NULL, NULL
};


/* Flags set by the option controlling the output.  */

/* True if dynamic segment should be printed.  */
static bool print_dynamic_table;

/* True if the file header should be printed.  */
static bool print_file_header;

/* True if the program headers should be printed.  */
static bool print_program_header;

/* True if relocations should be printed.  */
static bool print_relocations;

/* True if the section headers should be printed.  */
static bool print_section_header;

/* True if the symbol table should be printed.  */
static bool print_symbol_table;

/* True if the version information should be printed.  */
static bool print_version_info;

/* True if section groups should be printed.  */
static bool print_section_groups;

/* True if bucket list length histogram should be printed.  */
static bool print_histogram;

/* True if the architecture specific data should be printed.  */
static bool print_arch;

/* True if note section content should be printed.  */
static bool print_notes;

/* Select printing of debugging sections.  */
static enum section_e
{
  section_abbrev = 1,	/* .debug_abbrev  */
  section_aranges = 2,	/* .debug_aranges  */
  section_frame = 4,	/* .debug_frame or .eh_frame  */
  section_info = 8,	/* .debug_info  */
  section_line = 16,	/* .debug_line  */
  section_loc = 32,	/* .debug_loc  */
  section_pubnames = 64,/* .debug_pubnames  */
  section_str = 128,	/* .debug_str  */
  section_macinfo = 256,/* .debug_macinfo  */
  section_ranges = 512, /* .debug_ranges  */
  section_all = (section_abbrev | section_aranges | section_frame
		 | section_info | section_line | section_loc
		 | section_pubnames | section_str | section_macinfo
		 | section_ranges)
} print_debug_sections;

/* Number of sections in the file.  */
static size_t shnum;


/* Declarations of local functions.  */
static void process_file (int fd, Elf *elf, const char *prefix,
			  const char *fname, bool only_one);
static void process_elf_file (Elf *elf, const char *prefix, const char *fname,
			      bool only_one);
static void print_ehdr (Ebl *ebl, GElf_Ehdr *ehdr);
static void print_shdr (Ebl *ebl, GElf_Ehdr *ehdr);
static void print_phdr (Ebl *ebl, GElf_Ehdr *ehdr);
static void print_scngrp (Ebl *ebl);
static void print_dynamic (Ebl *ebl);
static void print_relocs (Ebl *ebl);
static void handle_relocs_rel (Ebl *ebl, Elf_Scn *scn, GElf_Shdr *shdr);
static void handle_relocs_rela (Ebl *ebl, Elf_Scn *scn, GElf_Shdr *shdr);
static void print_symtab (Ebl *ebl, int type);
static void handle_symtab (Ebl *ebl, Elf_Scn *scn, GElf_Shdr *shdr);
static void print_verinfo (Ebl *ebl);
static void handle_verneed (Ebl *ebl, Elf_Scn *scn, GElf_Shdr *shdr);
static void handle_verdef (Ebl *ebl, Elf_Scn *scn, GElf_Shdr *shdr);
static void handle_versym (Ebl *ebl, Elf_Scn *scn,
			   GElf_Shdr *shdr);
static void print_debug (Ebl *ebl, GElf_Ehdr *ehdr);
static void handle_hash (Ebl *ebl);
static void handle_notes (Ebl *ebl, GElf_Ehdr *ehdr);
static void print_liblist (Ebl *ebl);


int
main (int argc, char *argv[])
{
  /* Set locale.  */
  setlocale (LC_ALL, "");

  /* Initialize the message catalog.  */
  textdomain (PACKAGE);

  /* Parse and process arguments.  */
  int remaining;
  argp_parse (&argp, argc, argv, 0, &remaining, NULL);

  /* Before we start tell the ELF library which version we are using.  */
  elf_version (EV_CURRENT);

  /* Now process all the files given at the command line.  */
  bool only_one = remaining + 1 == argc;
  do
    {
      /* Open the file.  */
      int fd = open (argv[remaining], O_RDONLY);
      if (fd == -1)
	{
	  error (0, errno, gettext ("cannot open input file"));
	  continue;
	}

      /* Create an `Elf' descriptor.  */
      Elf *elf = elf_begin (fd, ELF_C_READ_MMAP, NULL);
      if (elf == NULL)
	error (0, 0, gettext ("cannot generate Elf descriptor: %s\n"),
	       elf_errmsg (-1));
      else
	{
	  process_file (fd, elf, NULL, argv[remaining], only_one);

	  /* Now we can close the descriptor.  */
	  if (elf_end (elf) != 0)
	    error (0, 0, gettext ("error while closing Elf descriptor: %s"),
		   elf_errmsg (-1));
	}

      close (fd);
    }
  while (++remaining < argc);

  return error_message_count != 0;
}


/* Handle program arguments.  */
static error_t
parse_opt (int key, char *arg,
	   struct argp_state *state __attribute__ ((unused)))
{
  /* True if any of the control options is set.  */
  static bool any_control_option;

  switch (key)
    {
    case 'a':
      print_file_header = true;
      print_program_header = true;
      print_relocations = true;
      print_section_header = true;
      print_symbol_table = true;
      print_version_info = true;
      print_dynamic_table = true;
      print_section_groups = true;
      print_histogram = true;
      print_arch = true;
      print_notes = true;
      any_control_option = true;
      break;
    case 'A':
      print_arch = true;
      any_control_option = true;
      break;
    case 'd':
      print_dynamic_table = true;
      any_control_option = true;
      break;
    case 'g':
      print_section_groups = true;
      any_control_option = true;
      break;
    case 'h':
      print_file_header = true;
      any_control_option = true;
      break;
    case 'I':
      print_histogram = true;
      any_control_option = true;
      break;
    case 'l':
      print_program_header = true;
      any_control_option = true;
      break;
    case 'n':
      print_notes = true;
      any_control_option = true;
      break;
    case 'r':
      print_relocations = true;
      any_control_option = true;
     break;
    case 'S':
      print_section_header = true;
      any_control_option = true;
      break;
    case 's':
      print_symbol_table = true;
      any_control_option = true;
      break;
    case 'V':
      print_version_info = true;
      any_control_option = true;
      break;
    case 'w':
      if (arg == NULL)
	print_debug_sections = section_all;
      else if (strcmp (arg, "abbrev") == 0)
	print_debug_sections |= section_abbrev;
      else if (strcmp (arg, "aranges") == 0)
	print_debug_sections |= section_aranges;
      else if (strcmp (arg, "ranges") == 0)
	print_debug_sections |= section_ranges;
      else if (strcmp (arg, "frame") == 0)
	print_debug_sections |= section_frame;
      else if (strcmp (arg, "info") == 0)
	print_debug_sections |= section_info;
      else if (strcmp (arg, "loc") == 0)
	print_debug_sections |= section_loc;
      else if (strcmp (arg, "line") == 0)
	print_debug_sections |= section_line;
      else if (strcmp (arg, "pubnames") == 0)
	print_debug_sections |= section_pubnames;
      else if (strcmp (arg, "str") == 0)
	print_debug_sections |= section_str;
      else if (strcmp (arg, "macinfo") == 0)
	print_debug_sections |= section_macinfo;
      else
	{
	  fprintf (stderr, gettext ("Unknown DWARF debug section `%s'.\n"),
		   arg);
	  argp_help (&argp, stderr, ARGP_HELP_SEE,
		     program_invocation_short_name);
	  exit (1);
	}
      any_control_option = true;
      break;
    case ARGP_KEY_NO_ARGS:
      fputs (gettext ("Missing file name.\n"), stderr);
      goto do_argp_help;
    case ARGP_KEY_FINI:
      if (! any_control_option)
	{
	  fputs (gettext ("No operation specified.\n"), stderr);
	do_argp_help:
	  argp_help (&argp, stderr, ARGP_HELP_SEE | ARGP_HELP_EXIT_ERR,
		     program_invocation_short_name);
	  exit (1);
	}
      break;
    default:
      return ARGP_ERR_UNKNOWN;
    }
  return 0;
}


/* Print the version information.  */
static void
print_version (FILE *stream, struct argp_state *state __attribute__ ((unused)))
{
  fprintf (stream, "readelf (%s) %s\n", PACKAGE_NAME, VERSION);
  fprintf (stream, gettext ("\
Copyright (C) %s Red Hat, Inc.\n\
This is free software; see the source for copying conditions.  There is NO\n\
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\
"), "2005");
  fprintf (stream, gettext ("Written by %s.\n"), "Ulrich Drepper");
}


/* Process one file.  */
static void
process_file (int fd, Elf *elf, const char *prefix, const char *fname,
	      bool only_one)
{
  /* We can handle two types of files: ELF files and archives.  */
  Elf_Kind kind = elf_kind (elf);
  struct stat64 st;

  switch (kind)
    {
    case ELF_K_ELF:
      /* Yes!  It's an ELF file.  */
      process_elf_file (elf, prefix, fname, only_one);
      break;

    case ELF_K_AR:
      {
	Elf *subelf;
	Elf_Cmd cmd = ELF_C_READ_MMAP;
	size_t prefix_len = prefix == NULL ? 0 : strlen (prefix);
	size_t fname_len = strlen (fname) + 1;
	char new_prefix[prefix_len + 1 + fname_len];
	char *cp = new_prefix;

	/* Create the full name of the file.  */
	if (prefix != NULL)
	  {
	    cp = mempcpy (cp, prefix, prefix_len);
	    *cp++ = ':';
	  }
	memcpy (cp, fname, fname_len);

	/* It's an archive.  We process each file in it.  */
	while ((subelf = elf_begin (fd, cmd, elf)) != NULL)
	  {
	    kind = elf_kind (subelf);

	    /* Call this function recursively.  */
	    if (kind == ELF_K_ELF || kind == ELF_K_AR)
	      {
		Elf_Arhdr *arhdr = elf_getarhdr (subelf);
		assert (arhdr != NULL);

		process_file (fd, subelf, new_prefix, arhdr->ar_name, false);
	      }

	    /* Get next archive element.  */
	    cmd = elf_next (subelf);
	    if (elf_end (subelf) != 0)
	      error (0, 0,
		     gettext (" error while freeing sub-ELF descriptor: %s\n"),
		     elf_errmsg (-1));
	  }
      }
      break;

    default:
      if (fstat64 (fd, &st) != 0)
	error (0, errno, gettext ("cannot stat input file"));
      else if (st.st_size == 0)
	error (0, 0, gettext ("input file is empty"));
      else
	/* We cannot do anything.  */
	error (0, 0, gettext ("\
Not an ELF file - it has the wrong magic bytes at the start"));
      break;
    }
}


/* Process one file.  */
static void
process_elf_file (Elf *elf, const char *prefix, const char *fname,
		  bool only_one)
{
  GElf_Ehdr ehdr_mem;
  GElf_Ehdr *ehdr = gelf_getehdr (elf, &ehdr_mem);
  Ebl *ebl;

  /* Print the file name.  */
  if (!only_one)
    {
      if (prefix != NULL)
	printf ("\n%s(%s):\n\n", prefix, fname);
      else
	printf ("\n%s:\n\n", fname);
    }

  if (ehdr == NULL)
    {
      error (0, 0, gettext ("cannot read ELF header: %s"), elf_errmsg (-1));
      return;
    }

  ebl = ebl_openbackend (elf);
  if (ebl == NULL)
    {
      error (0, errno, gettext ("cannot create EBL handle"));
      return;
    }

  /* Determine the number of sections.  */
  if (elf_getshnum (ebl->elf, &shnum) < 0)
    error (EXIT_FAILURE, 0,
	   gettext ("cannot determine number of sections: %s"),
	   elf_errmsg (-1));

  if (print_file_header)
    print_ehdr (ebl, ehdr);
  if (print_section_header)
    print_shdr (ebl, ehdr);
  if (print_program_header)
    print_phdr (ebl, ehdr);
  if (print_section_groups)
    print_scngrp (ebl);
  if (print_dynamic_table)
    print_dynamic (ebl);
  if (print_relocations)
    print_relocs (ebl);
  if (print_histogram)
    handle_hash (ebl);
  if (print_symbol_table)
    print_symtab (ebl, SHT_DYNSYM);
  if (print_version_info)
    print_verinfo (ebl);
  if (print_symbol_table)
    print_symtab (ebl, SHT_SYMTAB);
  if (print_arch)
    print_liblist (ebl);
  if (print_debug_sections != 0)
    print_debug (ebl, ehdr);
  if (print_notes)
    handle_notes (ebl, ehdr);

  ebl_closebackend (ebl);
}


/* Print file type.  */
static void
print_file_type (unsigned short int e_type)
{
  if (e_type <= ET_CORE)
    {
      static const char *knowntypes[] =
      {
	N_("NONE (None)"),
	N_("REL (Relocatable file)"),
	N_("EXEC (Executable file)"),
	N_("DYN (Shared object file)"),
	N_("CORE (Core file)")
      };
      puts (gettext (knowntypes[e_type]));
    }
  else if (e_type >= ET_LOOS && e_type <= ET_HIOS)
    printf (gettext ("OS Specific: (%x)\n"),  e_type);
  else if (e_type >= ET_LOPROC /* && e_type <= ET_HIPROC always true */)
    printf (gettext ("Processor Specific: (%x)\n"),  e_type);
  else
    puts ("???");
}


/* Print ELF header.  */
static void
print_ehdr (Ebl *ebl, GElf_Ehdr *ehdr)
{
  char buf[512];
  size_t cnt;

  fputs_unlocked (gettext ("ELF Header:\n  Magic:  "), stdout);
  for (cnt = 0; cnt < EI_NIDENT; ++cnt)
    printf (" %02hhx", ehdr->e_ident[cnt]);

  printf (gettext ("\n  Class:                             %s\n"),
	  ehdr->e_ident[EI_CLASS] == ELFCLASS32 ? "ELF32"
	  : ehdr->e_ident[EI_CLASS] == ELFCLASS64 ? "ELF64"
	  : "\?\?\?");

  printf (gettext ("  Data:                              %s\n"),
	  ehdr->e_ident[EI_DATA] == ELFDATA2LSB
	  ? "2's complement, little endian"
	  : ehdr->e_ident[EI_DATA] == ELFDATA2MSB
	  ? "2's complement, big endian" : "\?\?\?");

  printf (gettext ("  Version:                           %hhd %s\n"),
	  ehdr->e_ident[EI_VERSION],
	  ehdr->e_ident[EI_VERSION] == EV_CURRENT ? gettext ("(current)")
	  : "(\?\?\?)");

  printf (gettext ("  OS/ABI:                            %s\n"),
	  ebl_osabi_name (ebl, ehdr->e_ident[EI_OSABI], buf, sizeof (buf)));

  printf (gettext ("  ABI Version:                       %hhd\n"),
	  ehdr->e_ident[EI_ABIVERSION]);

  fputs_unlocked (gettext ("  Type:                              "), stdout);
  print_file_type (ehdr->e_type);

  printf (gettext ("  Machine:                           %s\n"), ebl->name);

  printf (gettext ("  Version:                           %d %s\n"),
	  ehdr->e_version,
	  ehdr->e_version  == EV_CURRENT ? gettext ("(current)") : "(\?\?\?)");

  printf (gettext ("  Entry point address:               %#" PRIx64 "\n"),
	  ehdr->e_entry);

  printf (gettext ("  Start of program headers:          %" PRId64 " %s\n"),
	  ehdr->e_phoff, gettext ("(bytes into file)"));

  printf (gettext ("  Start of section headers:          %" PRId64 " %s\n"),
	  ehdr->e_shoff, gettext ("(bytes into file)"));

  printf (gettext ("  Flags:                             %s\n"),
	  ebl_machine_flag_name (ebl, ehdr->e_flags, buf, sizeof (buf)));

  printf (gettext ("  Size of this header:               %" PRId16 " %s\n"),
	  ehdr->e_ehsize, gettext ("(bytes)"));

  printf (gettext ("  Size of program header entries:    %" PRId16 " %s\n"),
	  ehdr->e_phentsize, gettext ("(bytes)"));

  printf (gettext ("  Number of program headers entries: %" PRId16 "\n"),
	  ehdr->e_phnum);

  printf (gettext ("  Size of section header entries:    %" PRId16 " %s\n"),
	  ehdr->e_shentsize, gettext ("(bytes)"));

  printf (gettext ("  Number of section headers entries: %" PRId16),
	  ehdr->e_shnum);
  if (ehdr->e_shnum == 0)
    {
      GElf_Shdr shdr_mem;
      GElf_Shdr *shdr;

      shdr = gelf_getshdr (elf_getscn (ebl->elf, 0), &shdr_mem);
      if (shdr != NULL)
	printf (gettext (" (%" PRIu32 " in [0].sh_size)"),
		(uint32_t) shdr->sh_size);
      else
	fputs_unlocked (gettext (" ([0] not available)"), stdout);
    }
  fputc_unlocked ('\n', stdout);

  if (ehdr->e_shstrndx == SHN_XINDEX)
    {
      GElf_Shdr shdr_mem;
      GElf_Shdr *shdr;

      shdr = gelf_getshdr (elf_getscn (ebl->elf, 0), &shdr_mem);
      if (shdr != NULL)
	/* We managed to get the zeroth section.  */
	snprintf (buf, sizeof (buf), gettext (" (%" PRIu32 " in [0].sh_link)"),
		  (uint32_t) shdr->sh_link);
      else
	{
	  strncpy (buf, gettext (" ([0] not available)"), sizeof (buf));
	  buf[sizeof (buf) - 1] = '\0';
	}

      printf (gettext ("  Section header string table index: XINDEX%s\n\n"),
	      buf);
    }
  else
    printf (gettext ("  Section header string table index: %" PRId16 "\n\n"),
	    ehdr->e_shstrndx);
}


static const char *
get_visibility_type (int value)
{
  switch (value)
    {
    case STV_DEFAULT:
      return "DEFAULT";
    case STV_INTERNAL:
      return "INTERNAL";
    case STV_HIDDEN:
      return "HIDDEN";
    case STV_PROTECTED:
      return "PROTECTED";
    default:
      return "???";
    }
}


/* Print the section headers.  */
static void
print_shdr (Ebl *ebl, GElf_Ehdr *ehdr)
{
  size_t cnt;
  size_t shstrndx;

  if (! print_file_header)
    printf (gettext ("\
There are %d section headers, starting at offset %#" PRIx64 ":\n\
\n"),
	    ehdr->e_shnum, ehdr->e_shoff);

  /* Get the section header string table index.  */
  if (elf_getshstrndx (ebl->elf, &shstrndx) < 0)
    error (EXIT_FAILURE, 0,
	   gettext ("cannot get section header string table index"));

  puts (gettext ("Section Headers:"));

  if (ehdr->e_ident[EI_CLASS] == ELFCLASS32)
    puts (gettext ("[Nr] Name                 Type         Addr     Off    Size   ES Flags Lk Inf Al"));
  else
    puts (gettext ("[Nr] Name                 Type         Addr             Off      Size     ES Flags Lk Inf Al"));

  for (cnt = 0; cnt < shnum; ++cnt)
    {
      char buf[128];
      char flagbuf[20];
      char *cp;
      Elf_Scn *scn = elf_getscn (ebl->elf, cnt);
      GElf_Shdr shdr_mem;
      GElf_Shdr *shdr;

      if (scn == NULL)
	error (EXIT_FAILURE, 0, gettext ("cannot get section: %s"),
	       elf_errmsg (-1));

      /* Get the section header.  */
      shdr = gelf_getshdr (scn, &shdr_mem);
      if (shdr == NULL)
	error (EXIT_FAILURE, 0, gettext ("cannot get section header: %s"),
	       elf_errmsg (-1));

      cp = flagbuf;
      if (shdr->sh_flags & SHF_WRITE)
	*cp++ = 'W';
      if (shdr->sh_flags & SHF_ALLOC)
	*cp++ = 'A';
      if (shdr->sh_flags & SHF_EXECINSTR)
	*cp++ = 'X';
      if (shdr->sh_flags & SHF_MERGE)
	*cp++ = 'M';
      if (shdr->sh_flags & SHF_STRINGS)
	*cp++ = 'S';
      if (shdr->sh_flags & SHF_INFO_LINK)
	*cp++ = 'I';
      if (shdr->sh_flags & SHF_LINK_ORDER)
	*cp++ = 'L';
      if (shdr->sh_flags & SHF_OS_NONCONFORMING)
	*cp++ = 'N';
      if (shdr->sh_flags & SHF_GROUP)
	*cp++ = 'G';
      if (shdr->sh_flags & SHF_TLS)
	*cp++ = 'T';
      if (shdr->sh_flags & SHF_ORDERED)
	*cp++ = 'O';
      if (shdr->sh_flags & SHF_EXCLUDE)
	*cp++ = 'E';
      *cp = '\0';

      printf ("[%2zu] %-20s %-12s %0*" PRIx64 " %0*" PRIx64 " %0*" PRIx64
	      " %2" PRId64 " %-5s %2" PRId32 " %3" PRId32
	      " %2" PRId64 "\n",
	      cnt,
	      elf_strptr (ebl->elf, shstrndx, shdr->sh_name)
	      ?: "<corrupt>",
	      ebl_section_type_name (ebl, shdr->sh_type, buf, sizeof (buf)),
	      ehdr->e_ident[EI_CLASS] == ELFCLASS32 ? 8 : 16, shdr->sh_addr,
	      ehdr->e_ident[EI_CLASS] == ELFCLASS32 ? 6 : 8, shdr->sh_offset,
	      ehdr->e_ident[EI_CLASS] == ELFCLASS32 ? 6 : 8, shdr->sh_size,
	      shdr->sh_entsize, flagbuf, shdr->sh_link, shdr->sh_info,
	      shdr->sh_addralign);
    }

  fputc_unlocked ('\n', stdout);
}


/* Print the program header.  */
static void
print_phdr (Ebl *ebl, GElf_Ehdr *ehdr)
{
  size_t cnt;
  size_t shstrndx;

  if (ehdr->e_phnum == 0)
    /* No program header, this is OK in relocatable objects.  */
    return;

  puts (gettext ("Program Headers:"));
  if (ehdr->e_ident[EI_CLASS] == ELFCLASS32)
    puts (gettext ("\
  Type           Offset   VirtAddr   PhysAddr   FileSiz  MemSiz   Flg Align"));
  else
    puts (gettext ("\
  Type           Offset   VirtAddr           PhysAddr           FileSiz  MemSiz   Flg Align"));

  /* Process all program headers.  */
  bool has_relro = false;
  GElf_Addr relro_from = 0;
  GElf_Addr relro_to = 0;
  for (cnt = 0; cnt < ehdr->e_phnum; ++cnt)
    {
      char buf[128];
      GElf_Phdr mem;
      GElf_Phdr *phdr = gelf_getphdr (ebl->elf, cnt, &mem);

      /* If for some reason the header cannot be returned show this.  */
      if (phdr == NULL)
	{
	  puts ("  ???");
	  continue;
	}

      printf ("  %-14s 0x%06" PRIx64 " 0x%0*" PRIx64 " 0x%0*" PRIx64
	      " 0x%06" PRIx64 " 0x%06" PRIx64 " %c%c%c 0x%" PRIx64 "\n",
	      ebl_segment_type_name (ebl, phdr->p_type, buf, sizeof (buf)),
	      phdr->p_offset,
	      ehdr->e_ident[EI_CLASS] == ELFCLASS32 ? 8 : 16, phdr->p_vaddr,
	      ehdr->e_ident[EI_CLASS] == ELFCLASS32 ? 8 : 16, phdr->p_paddr,
	      phdr->p_filesz,
	      phdr->p_memsz,
	      phdr->p_flags & PF_R ? 'R' : ' ',
	      phdr->p_flags & PF_W ? 'W' : ' ',
	      phdr->p_flags & PF_X ? 'E' : ' ',
	      phdr->p_align);

      if (phdr->p_type == PT_INTERP)
	{
	  /* We can show the user the name of the interpreter.  */
	  size_t maxsize;
	  char *filedata = elf_rawfile (ebl->elf, &maxsize);

	  if (filedata != NULL && phdr->p_offset < maxsize)
	    printf (gettext ("\t[Requesting program interpreter: %s]\n"),
		    filedata + phdr->p_offset);
	}
      else if (phdr->p_type == PT_GNU_RELRO)
	{
	  has_relro = true;
	  relro_from = phdr->p_vaddr;
	  relro_to = relro_from + phdr->p_memsz;
	}
    }

  /* Get the section header string table index.  */
  if (elf_getshstrndx (ebl->elf, &shstrndx) < 0)
    error (EXIT_FAILURE, 0,
	   gettext ("cannot get section header string table index"));

  puts (gettext ("\n Section to Segment mapping:\n  Segment Sections..."));

  for (cnt = 0; cnt < ehdr->e_phnum; ++cnt)
    {
      GElf_Phdr phdr_mem;
      GElf_Phdr *phdr = gelf_getphdr (ebl->elf, cnt, &phdr_mem);
      size_t inner;

      /* Print the segment number.  */
      printf ("   %2.2zu     ", cnt);

      /* This must not happen.  */
      if (phdr == NULL)
	error (EXIT_FAILURE, 0, gettext ("cannot get program header: %s"),
	       elf_errmsg (-1));

      /* Iterate over the sections.  */
      bool in_relro = false;
      bool in_ro = false;
      for (inner = 1; inner < shnum; ++inner)
	{
	  Elf_Scn *scn = elf_getscn (ebl->elf, inner);
	  GElf_Shdr shdr_mem;
	  GElf_Shdr *shdr;

	  /* It should not happen.  */
	  if (scn == NULL)
	    error (EXIT_FAILURE, 0, gettext ("cannot get section: %s"),
		   elf_errmsg (-1));

	  /* Get the section header.  */
	  shdr = gelf_getshdr (scn, &shdr_mem);
	  if (shdr == NULL)
	    error (EXIT_FAILURE, 0,
		   gettext ("cannot get section header: %s"),
		   elf_errmsg (-1));

	  if (shdr->sh_size > 0
	      /* Compare allocated sections by VMA, unallocated
		 sections by file offset.  */
	      && (shdr->sh_flags & SHF_ALLOC
		  ? (shdr->sh_addr >= phdr->p_vaddr
		     && (shdr->sh_addr + shdr->sh_size
			 <= phdr->p_vaddr + phdr->p_memsz))
		  : (shdr->sh_offset >= phdr->p_offset
		     && (shdr->sh_offset + shdr->sh_size
			 <= phdr->p_offset + phdr->p_filesz))))
	    {
	      if (has_relro && !in_relro
		  && shdr->sh_addr >= relro_from
		  && shdr->sh_addr + shdr->sh_size <= relro_to)
		{
		  fputs_unlocked (" [RELRO:", stdout);
		  in_relro = true;
		}
	      else if (has_relro && in_relro && shdr->sh_addr >= relro_to)
		{
		  fputs_unlocked ("]", stdout);
		  in_relro =  false;
		}
	      else if (has_relro && in_relro
		       && shdr->sh_addr + shdr->sh_size > relro_to)
		fputs_unlocked ("] <RELRO:", stdout);
	      else if (phdr->p_type == PT_LOAD && (phdr->p_flags & PF_W) == 0)
		{
		  if (!in_ro)
		    {
		      fputs_unlocked (" [RO:", stdout);
		      in_ro = true;
		    }
		}
	      else
		{
		  /* Determine the segment this section is part of.  */
		  size_t cnt2;
		  GElf_Phdr *phdr2 = NULL;
		  for (cnt2 = 0; cnt2 < ehdr->e_phnum; ++cnt2)
		    {
		      GElf_Phdr phdr2_mem;
		      phdr2 = gelf_getphdr (ebl->elf, cnt2, &phdr2_mem);

		      if (phdr2 != NULL && phdr2->p_type == PT_LOAD
			  && shdr->sh_addr >= phdr2->p_vaddr
			  && (shdr->sh_addr + shdr->sh_size
			      <= phdr2->p_vaddr + phdr2->p_memsz))
			break;
		    }

		  if (cnt2 < ehdr->e_phnum)
		    {
		      if ((phdr2->p_flags & PF_W) == 0 && !in_ro)
			{
			  fputs_unlocked (" [RO:", stdout);
			  in_ro = true;
			}
		      else if ((phdr2->p_flags & PF_W) != 0 && in_ro)
			{
			  fputs_unlocked ("]", stdout);
			  in_ro = false;
			}
		    }
		}

	      printf (" %s",
		      elf_strptr (ebl->elf, shstrndx, shdr->sh_name));

	      /* Signal that this sectin is only partially covered.  */
	      if (has_relro && in_relro
		       && shdr->sh_addr + shdr->sh_size > relro_to)
		{
		  fputs_unlocked (">", stdout);
		  in_relro =  false;
		}
	    }
	}
      if (in_relro || in_ro)
	fputs_unlocked ("]", stdout);

      /* Finish the line.  */
      fputc_unlocked ('\n', stdout);
    }
}


static void
handle_scngrp (Ebl *ebl, Elf_Scn *scn, GElf_Shdr *shdr)
{
  Elf_Data *data;
  Elf32_Word *grpref;
  Elf_Scn *symscn;
  GElf_Shdr symshdr_mem;
  GElf_Shdr *symshdr;
  Elf_Data *symdata;
  GElf_Sym sym_mem;
  size_t cnt;
  size_t shstrndx;

  /* Get the data of the section.  */
  data = elf_getdata (scn, NULL);

  symscn = elf_getscn (ebl->elf, shdr->sh_link);
  symshdr = gelf_getshdr (symscn, &symshdr_mem);
  symdata = elf_getdata (symscn, NULL);

  if (data == NULL || data->d_size < sizeof (Elf32_Word) || symshdr == NULL
      || symdata == NULL)
    return;

  /* Get the section header string table index.  */
  if (elf_getshstrndx (ebl->elf, &shstrndx) < 0)
    error (EXIT_FAILURE, 0,
	   gettext ("cannot get section header string table index"));

  grpref = (Elf32_Word *) data->d_buf;

  printf ((grpref[0] & GRP_COMDAT)
	  ? ngettext ("\
\nCOMDAT section group [%2zu] '%s' with signature '%s' contains %zu entry:\n",
		      "\
\nCOMDAT section group [%2zu] '%s' with signature '%s' contains %zu entries:\n",
		      data->d_size / sizeof (Elf32_Word) - 1)
	  : ngettext ("\
\nSection group [%2zu] '%s' with signature '%s' contains %zu entry:\n", "\
\nSection group [%2zu] '%s' with signature '%s' contains %zu entries:\n",
		      data->d_size / sizeof (Elf32_Word) - 1),
	  elf_ndxscn (scn),
	  elf_strptr (ebl->elf, shstrndx, shdr->sh_name),
	  elf_strptr (ebl->elf, symshdr->sh_link,
		      gelf_getsym (symdata, shdr->sh_info, &sym_mem)->st_name)
	  ?: gettext ("<INVALID SYMBOL>"),
	  data->d_size / sizeof (Elf32_Word) - 1);

  for (cnt = 1; cnt < data->d_size / sizeof (Elf32_Word); ++cnt)
    {
      GElf_Shdr grpshdr_mem;
      GElf_Shdr *grpshdr;

      grpshdr = gelf_getshdr (elf_getscn (ebl->elf, grpref[cnt]),
			      &grpshdr_mem);

      if (grpshdr == NULL)
	printf (gettext ("  [%2u] <INVALID SECTION>\n"), grpref[cnt]);
      else
	printf ("  [%2u] %s\n",
		grpref[cnt],
		elf_strptr (ebl->elf, shstrndx, grpshdr->sh_name)
		?: gettext ("<INVALID SECTION>"));
    }
}


static void
print_scngrp (Ebl *ebl)
{
  /* Find all relocation sections and handle them.  */
  Elf_Scn *scn = NULL;

  while ((scn = elf_nextscn (ebl->elf, scn)) != NULL)
    {
       /* Handle the section if it is a symbol table.  */
      GElf_Shdr shdr_mem;
      GElf_Shdr *shdr = gelf_getshdr (scn, &shdr_mem);

      if (shdr != NULL && shdr->sh_type == SHT_GROUP)
	handle_scngrp (ebl, scn, shdr);
    }
}


static const struct flags
{
  int mask;
  const char *str;
} dt_flags[] =
  {
    { DF_ORIGIN, "ORIGIN" },
    { DF_SYMBOLIC, "SYMBOLIC" },
    { DF_TEXTREL, "TEXTREL" },
    { DF_BIND_NOW, "BIND_NOW" },
    { DF_STATIC_TLS, "STATIC_TLS" }
  };
static const int ndt_flags = sizeof (dt_flags) / sizeof (dt_flags[0]);

static const struct flags dt_flags_1[] =
  {
    { DF_1_NOW, "NOW" },
    { DF_1_GLOBAL, "GLOBAL" },
    { DF_1_GROUP, "GROUP" },
    { DF_1_NODELETE, "NODELETE" },
    { DF_1_LOADFLTR, "LOADFLTR" },
    { DF_1_INITFIRST, "INITFIRST" },
    { DF_1_NOOPEN, "NOOPEN" },
    { DF_1_ORIGIN, "ORIGIN" },
    { DF_1_DIRECT, "DIRECT" },
    { DF_1_TRANS, "TRANS" },
    { DF_1_INTERPOSE, "INTERPOSE" },
    { DF_1_NODEFLIB, "NODEFLIB" },
    { DF_1_NODUMP, "NODUMP" },
    { DF_1_CONFALT, "CONFALT" },
    { DF_1_ENDFILTEE, "ENDFILTEE" },
    { DF_1_DISPRELDNE, "DISPRELDNE" },
    { DF_1_DISPRELPND, "DISPRELPND" },
  };
static const int ndt_flags_1 = sizeof (dt_flags_1) / sizeof (dt_flags_1[0]);

static const struct flags dt_feature_1[] =
  {
    { DTF_1_PARINIT, "PARINIT" },
    { DTF_1_CONFEXP, "CONFEXP" }
  };
static const int ndt_feature_1 = (sizeof (dt_feature_1)
				  / sizeof (dt_feature_1[0]));

static const struct flags dt_posflag_1[] =
  {
    { DF_P1_LAZYLOAD, "LAZYLOAD" },
    { DF_P1_GROUPPERM, "GROUPPERM" }
  };
static const int ndt_posflag_1 = (sizeof (dt_posflag_1)
				  / sizeof (dt_posflag_1[0]));


static void
print_flags (int class, GElf_Xword d_val, const struct flags *flags,
		int nflags)
{
  bool first = true;
  int cnt;

  for (cnt = 0; cnt < nflags; ++cnt)
    if (d_val & flags[cnt].mask)
      {
	if (!first)
	  putchar_unlocked (' ');
	fputs_unlocked (flags[cnt].str, stdout);
	d_val &= ~flags[cnt].mask;
	first = false;
      }

  if (d_val != 0)
    {
      if (!first)
	putchar_unlocked (' ');
      printf ("%#0*" PRIx64, class == ELFCLASS32 ? 10 : 18, d_val);
    }

  putchar_unlocked ('\n');
}


static void
print_dt_flags (int class, GElf_Xword d_val)
{
  print_flags (class, d_val, dt_flags, ndt_flags);
}


static void
print_dt_flags_1 (int class, GElf_Xword d_val)
{
  print_flags (class, d_val, dt_flags_1, ndt_flags_1);
}


static void
print_dt_feature_1 (int class, GElf_Xword d_val)
{
  print_flags (class, d_val, dt_feature_1, ndt_feature_1);
}


static void
print_dt_posflag_1 (int class, GElf_Xword d_val)
{
  print_flags (class, d_val, dt_posflag_1, ndt_posflag_1);
}


static void
handle_dynamic (Ebl *ebl, Elf_Scn *scn, GElf_Shdr *shdr)
{
  int class = gelf_getclass (ebl->elf);
  GElf_Shdr glink;
  Elf_Data *data;
  size_t cnt;
  size_t shstrndx;

  /* Get the data of the section.  */
  data = elf_getdata (scn, NULL);
  if (data == NULL)
    return;

  /* Get the section header string table index.  */
  if (elf_getshstrndx (ebl->elf, &shstrndx) < 0)
    error (EXIT_FAILURE, 0,
	   gettext ("cannot get section header string table index"));

  printf (ngettext ("\
\nDynamic segment contains %lu entry:\n Addr: %#0*" PRIx64 "  Offset: %#08" PRIx64 "  Link to section: [%2u] '%s'\n",
		    "\
\nDynamic segment contains %lu entries:\n Addr: %#0*" PRIx64 "  Offset: %#08" PRIx64 "  Link to section: [%2u] '%s'\n",
		    shdr->sh_size / shdr->sh_entsize),
	  (unsigned long int) (shdr->sh_size / shdr->sh_entsize),
	  class == ELFCLASS32 ? 10 : 18, shdr->sh_addr,
	  shdr->sh_offset,
	  (int) shdr->sh_link,
	  elf_strptr (ebl->elf, shstrndx,
		      gelf_getshdr (elf_getscn (ebl->elf, shdr->sh_link),
				    &glink)->sh_name));
  fputs_unlocked (gettext ("  Type              Value\n"), stdout);

  for (cnt = 0; cnt < shdr->sh_size / shdr->sh_entsize; ++cnt)
    {
      char buf[64];
      GElf_Dyn dynmem;
      GElf_Dyn *dyn;

      dyn = gelf_getdyn (data, cnt, &dynmem);
      if (dyn == NULL)
	break;

      printf ("  %-17s ",
	      ebl_dynamic_tag_name (ebl, dyn->d_tag, buf, sizeof (buf)));

      switch (dyn->d_tag)
	{
	case DT_NULL:
	case DT_DEBUG:
	case DT_BIND_NOW:
	case DT_TEXTREL:
	  /* No further output.  */
	  fputc ('\n', stdout);
	  break;

	case DT_NEEDED:
	  printf (gettext ("Shared library: [%s]\n"),
		  elf_strptr (ebl->elf, shdr->sh_link, dyn->d_un.d_val));
	  break;

	case DT_SONAME:
	  printf (gettext ("Library soname: [%s]\n"),
		  elf_strptr (ebl->elf, shdr->sh_link, dyn->d_un.d_val));
	  break;

	case DT_RPATH:
	  printf (gettext ("Library rpath: [%s]\n"),
		  elf_strptr (ebl->elf, shdr->sh_link, dyn->d_un.d_val));
	  break;

	case DT_RUNPATH:
	  printf (gettext ("Library runpath: [%s]\n"),
		  elf_strptr (ebl->elf, shdr->sh_link, dyn->d_un.d_val));
	  break;

	case DT_PLTRELSZ:
	case DT_RELASZ:
	case DT_STRSZ:
	case DT_RELSZ:
	case DT_RELAENT:
	case DT_SYMENT:
	case DT_RELENT:
	case DT_PLTPADSZ:
	case DT_MOVEENT:
	case DT_MOVESZ:
	case DT_INIT_ARRAYSZ:
	case DT_FINI_ARRAYSZ:
	case DT_SYMINSZ:
	case DT_SYMINENT:
	case DT_GNU_CONFLICTSZ:
	case DT_GNU_LIBLISTSZ:
	  printf (gettext ("%" PRId64 " (bytes)\n"), dyn->d_un.d_val);
	  break;

	case DT_VERDEFNUM:
	case DT_VERNEEDNUM:
	case DT_RELACOUNT:
	case DT_RELCOUNT:
	  printf ("%" PRId64 "\n", dyn->d_un.d_val);
	  break;

	case DT_PLTREL:
	  puts (ebl_dynamic_tag_name (ebl, dyn->d_un.d_val, NULL, 0));
	  break;

	case DT_FLAGS:
	  print_dt_flags (class, dyn->d_un.d_val);
	  break;

	case DT_FLAGS_1:
	  print_dt_flags_1 (class, dyn->d_un.d_val);
	  break;

	case DT_FEATURE_1:
	  print_dt_feature_1 (class, dyn->d_un.d_val);
	  break;

	case DT_POSFLAG_1:
	  print_dt_posflag_1 (class, dyn->d_un.d_val);
	  break;

	default:
	  printf ("%#0*" PRIx64 "\n",
		  class == ELFCLASS32 ? 10 : 18, dyn->d_un.d_val);
	  break;
	}
    }
}


/* Print the dynamic segment.  */
static void
print_dynamic (Ebl *ebl)
{
  /* Find all relocation sections and handle them.  */
  Elf_Scn *scn = NULL;

  while ((scn = elf_nextscn (ebl->elf, scn)) != NULL)
    {
       /* Handle the section if it is a symbol table.  */
      GElf_Shdr shdr_mem;
      GElf_Shdr *shdr = gelf_getshdr (scn, &shdr_mem);

      if (shdr != NULL && shdr->sh_type == SHT_DYNAMIC)
	{
	  handle_dynamic (ebl, scn, shdr);
	  break;
	}
    }
}


/* Print relocations.  */
static void
print_relocs (Ebl *ebl)
{
  /* Find all relocation sections and handle them.  */
  Elf_Scn *scn = NULL;

  while ((scn = elf_nextscn (ebl->elf, scn)) != NULL)
    {
       /* Handle the section if it is a symbol table.  */
      GElf_Shdr shdr_mem;
      GElf_Shdr *shdr = gelf_getshdr (scn, &shdr_mem);

      if (shdr != NULL)
	{
	  if (shdr->sh_type == SHT_REL)
	    handle_relocs_rel (ebl, scn, shdr);
	  else if (shdr->sh_type == SHT_RELA)
	    handle_relocs_rela (ebl, scn, shdr);
	}
    }
}


/* Handle a relocation section.  */
static void
handle_relocs_rel (Ebl *ebl, Elf_Scn *scn, GElf_Shdr *shdr)
{
  int class = gelf_getclass (ebl->elf);
  int nentries = shdr->sh_size / shdr->sh_entsize;
  int cnt;
  Elf_Data *data;
  Elf_Scn *symscn;
  GElf_Shdr symshdr_mem;
  GElf_Shdr *symshdr;
  Elf_Data *symdata;
  GElf_Shdr destshdr_mem;
  GElf_Shdr *destshdr;
  Elf_Scn *xndxscn;
  Elf_Data *xndxdata = NULL;
  size_t shstrndx;

  /* Get the data of the section.  */
  data = elf_getdata (scn, NULL);
  if (data == NULL)
    return;

  /* Get the symbol table information.  */
  symscn = elf_getscn (ebl->elf, shdr->sh_link);
  symshdr = gelf_getshdr (symscn, &symshdr_mem);
  symdata = elf_getdata (symscn, NULL);

  /* Get the section header of the section the relocations are for.  */
  destshdr = gelf_getshdr (elf_getscn (ebl->elf, shdr->sh_info),
			   &destshdr_mem);

  if (symshdr == NULL || symdata == NULL || destshdr == NULL)
    {
      printf (gettext ("\nInvalid symbol table at offset %#0" PRIx64 "\n"),
	      shdr->sh_offset);
      return;
    }

  /* Search for the optional extended section index table.  */
  xndxscn = NULL;
  while ((xndxscn = elf_nextscn (ebl->elf, xndxscn)) != NULL)
    {
      GElf_Shdr xndxshdr_mem;
      GElf_Shdr *xndxshdr;

      xndxshdr = gelf_getshdr (xndxscn, &xndxshdr_mem);
      if (xndxshdr != NULL && xndxshdr->sh_type == SHT_SYMTAB_SHNDX
	  && xndxshdr->sh_link == elf_ndxscn (symscn))
	{
	  /* Found it.  */
	  xndxdata = elf_getdata (xndxscn, NULL);
	  break;
	}
    }

  /* Get the section header string table index.  */
  if (elf_getshstrndx (ebl->elf, &shstrndx) < 0)
    error (EXIT_FAILURE, 0,
	   gettext ("cannot get section header string table index"));

  if (shdr->sh_info != 0)
    printf (ngettext ("\
\nRelocation section [%2u] '%s' for section [%2u] '%s' at offset %#0" PRIx64 " contains %d entry:\n",
		    "\
\nRelocation section [%2u] '%s' for section [%2u] '%s' at offset %#0" PRIx64 " contains %d entries:\n",
		      nentries),
	    (unsigned int) elf_ndxscn (scn),
	    elf_strptr (ebl->elf, shstrndx, shdr->sh_name),
	    (unsigned int) shdr->sh_info,
	    elf_strptr (ebl->elf, shstrndx, destshdr->sh_name),
	    shdr->sh_offset,
	    nentries);
  else
    /* The .rel.dyn section does not refer to a specific section but
       instead of section index zero.  Do not try to print a section
       name.  */
    printf (ngettext ("\
\nRelocation section [%2u] '%s' at offset %#0" PRIx64 " contains %d entry:\n",
		    "\
\nRelocation section [%2u] '%s' at offset %#0" PRIx64 " contains %d entries:\n",
		      nentries),
	    (unsigned int) elf_ndxscn (scn),
	    elf_strptr (ebl->elf, shstrndx, shdr->sh_name),
	    shdr->sh_offset,
	    nentries);
  fputs_unlocked (class == ELFCLASS32
		  ? gettext ("\
  Offset      Type                 Value       Name\n")
		  : gettext ("\
  Offset              Type                 Value               Name\n"),
	 stdout);

  for (cnt = 0; cnt < nentries; ++cnt)
    {
      GElf_Rel relmem;
      GElf_Rel *rel;

      rel = gelf_getrel (data, cnt, &relmem);
      if (rel != NULL)
	{
	  char buf[128];
	  GElf_Sym symmem;
	  GElf_Sym *sym;
	  Elf32_Word xndx;

	  sym = gelf_getsymshndx (symdata, xndxdata, GELF_R_SYM (rel->r_info),
				  &symmem, &xndx);
	  if (sym == NULL)
	    printf ("  %#0*" PRIx64 "  %-20s <%s %ld>\n",
		    class == ELFCLASS32 ? 10 : 18, rel->r_offset,
		    ebl_reloc_type_check (ebl, GELF_R_TYPE (rel->r_info))
		    /* Avoid the leading R_ which isn't carrying any
		       information.  */
		    ? ebl_reloc_type_name (ebl, GELF_R_TYPE (rel->r_info),
					   buf, sizeof (buf)) + 2
		    : gettext ("<INVALID RELOC>"),
		    gettext ("INVALID SYMBOL"),
		    (long int) GELF_R_SYM (rel->r_info));
	  else if (GELF_ST_TYPE (sym->st_info) != STT_SECTION)
	    printf ("  %#0*" PRIx64 "  %-20s %#0*" PRIx64 "  %s\n",
		    class == ELFCLASS32 ? 10 : 18, rel->r_offset,
		    ebl_reloc_type_check (ebl, GELF_R_TYPE (rel->r_info))
		    /* Avoid the leading R_ which isn't carrying any
		       information.  */
		    ? ebl_reloc_type_name (ebl, GELF_R_TYPE (rel->r_info),
					   buf, sizeof (buf)) + 2
		    : gettext ("<INVALID RELOC>"),
		    class == ELFCLASS32 ? 10 : 18, sym->st_value,
		    elf_strptr (ebl->elf, symshdr->sh_link, sym->st_name));
	  else
	    {
	      destshdr = gelf_getshdr (elf_getscn (ebl->elf,
						   sym->st_shndx == SHN_XINDEX
						   ? xndx : sym->st_shndx),
				       &destshdr_mem);

	      if (shdr == NULL)
		printf ("  %#0*" PRIx64 "  %-20s <%s %ld>\n",
			class == ELFCLASS32 ? 10 : 18, rel->r_offset,
			ebl_reloc_type_check (ebl, GELF_R_TYPE (rel->r_info))
			/* Avoid the leading R_ which isn't carrying any
			   information.  */
			? ebl_reloc_type_name (ebl, GELF_R_TYPE (rel->r_info),
					       buf, sizeof (buf)) + 2
			: gettext ("<INVALID RELOC>"),
			gettext ("INVALID SECTION"),
			(long int) (sym->st_shndx == SHN_XINDEX
				    ? xndx : sym->st_shndx));
	      else
		printf ("  %#0*" PRIx64 "  %-20s %#0*" PRIx64 "  %s\n",
			class == ELFCLASS32 ? 10 : 18, rel->r_offset,
			ebl_reloc_type_check (ebl, GELF_R_TYPE (rel->r_info))
			/* Avoid the leading R_ which isn't carrying any
			   information.  */
			? ebl_reloc_type_name (ebl, GELF_R_TYPE (rel->r_info),
					       buf, sizeof (buf)) + 2
			: gettext ("<INVALID RELOC>"),
			class == ELFCLASS32 ? 10 : 18, sym->st_value,
			elf_strptr (ebl->elf, shstrndx, destshdr->sh_name));
	    }
	}
    }
}


/* Handle a relocation section.  */
static void
handle_relocs_rela (Ebl *ebl, Elf_Scn *scn, GElf_Shdr *shdr)
{
  int class = gelf_getclass (ebl->elf);
  int nentries = shdr->sh_size / shdr->sh_entsize;

  /* Get the data of the section.  */
  Elf_Data *data = elf_getdata (scn, NULL);
  if (data == NULL)
    return;

  /* Get the symbol table information.  */
  Elf_Scn *symscn = elf_getscn (ebl->elf, shdr->sh_link);
  GElf_Shdr symshdr_mem;
  GElf_Shdr *symshdr = gelf_getshdr (symscn, &symshdr_mem);
  Elf_Data *symdata = elf_getdata (symscn, NULL);

  /* Get the section header of the section the relocations are for.  */
  GElf_Shdr destshdr_mem;
  GElf_Shdr *destshdr = gelf_getshdr (elf_getscn (ebl->elf, shdr->sh_info),
				      &destshdr_mem);

  if (symshdr == NULL || symdata == NULL || destshdr == NULL)
    {
      printf (gettext ("\nInvalid symbol table at offset %#0" PRIx64 "\n"),
	      shdr->sh_offset);
      return;
    }

  /* Search for the optional extended section index table.  */
  Elf_Data *xndxdata = NULL;
  Elf_Scn *xndxscn = NULL;
  while ((xndxscn = elf_nextscn (ebl->elf, xndxscn)) != NULL)
    {
      GElf_Shdr xndxshdr_mem;
      GElf_Shdr *xndxshdr;

      xndxshdr = gelf_getshdr (xndxscn, &xndxshdr_mem);
      if (xndxshdr != NULL && xndxshdr->sh_type == SHT_SYMTAB_SHNDX
	  && xndxshdr->sh_link == elf_ndxscn (symscn))
	{
	  /* Found it.  */
	  xndxdata = elf_getdata (xndxscn, NULL);
	  break;
	}
    }

  /* Get the section header string table index.  */
  size_t shstrndx;
  if (elf_getshstrndx (ebl->elf, &shstrndx) < 0)
    error (EXIT_FAILURE, 0,
	   gettext ("cannot get section header string table index"));

  printf (ngettext ("\
\nRelocation section [%2zu] '%s' for section [%2u] '%s' at offset %#0" PRIx64 " contains %d entry:\n",
		    "\
\nRelocation section [%2zu] '%s' for section [%2u] '%s' at offset %#0" PRIx64 " contains %d entries:\n",
		    nentries),
	  elf_ndxscn (scn),
	  elf_strptr (ebl->elf, shstrndx, shdr->sh_name),
	  (unsigned int) shdr->sh_info,
	  elf_strptr (ebl->elf, shstrndx, destshdr->sh_name),
	  shdr->sh_offset,
	  nentries);
  fputs_unlocked (class == ELFCLASS32
		  ? gettext ("\
  Offset      Type            Value       Addend Name\n")
		  : gettext ("\
  Offset              Type            Value               Addend Name\n"),
		  stdout);

  for (int cnt = 0; cnt < nentries; ++cnt)
    {
      GElf_Rela relmem;
      GElf_Rela *rel = gelf_getrela (data, cnt, &relmem);
      if (rel != NULL)
	{
	  char buf[64];
	  GElf_Sym symmem;
	  GElf_Sym *sym;
	  Elf32_Word xndx;

	  sym = gelf_getsymshndx (symdata, xndxdata, GELF_R_SYM (rel->r_info),
				  &symmem, &xndx);

	  if (sym == NULL)
	    printf ("  %#0*" PRIx64 "  %-15s <%s %ld>\n",
		    class == ELFCLASS32 ? 10 : 18, rel->r_offset,
		    ebl_reloc_type_check (ebl, GELF_R_TYPE (rel->r_info))
		    /* Avoid the leading R_ which isn't carrying any
		       information.  */
		    ? ebl_reloc_type_name (ebl, GELF_R_TYPE (rel->r_info),
					   buf, sizeof (buf)) + 2
		    : gettext ("<INVALID RELOC>"),
		    gettext ("INVALID SYMBOL"),
		    (long int) GELF_R_SYM (rel->r_info));
	  else if (GELF_ST_TYPE (sym->st_info) != STT_SECTION)
	    printf ("\
  %#0*" PRIx64 "  %-15s %#0*" PRIx64 "  +%5" PRId64 " %s\n",
		    class == ELFCLASS32 ? 10 : 18, rel->r_offset,
		    ebl_reloc_type_check (ebl, GELF_R_TYPE (rel->r_info))
		    /* Avoid the leading R_ which isn't carrying any
		       information.  */
		    ? ebl_reloc_type_name (ebl, GELF_R_TYPE (rel->r_info),
					   buf, sizeof (buf)) + 2
		    : gettext ("<INVALID RELOC>"),
		    class == ELFCLASS32 ? 10 : 18, sym->st_value,
		    rel->r_addend,
		    elf_strptr (ebl->elf, symshdr->sh_link, sym->st_name));
	  else
	    {
	      destshdr = gelf_getshdr (elf_getscn (ebl->elf,
						   sym->st_shndx == SHN_XINDEX
						   ? xndx : sym->st_shndx),
				       &destshdr_mem);

	      if (shdr == NULL)
		printf ("  %#0*" PRIx64 "  %-15s <%s %ld>\n",
			class == ELFCLASS32 ? 10 : 18, rel->r_offset,
			ebl_reloc_type_check (ebl, GELF_R_TYPE (rel->r_info))
			/* Avoid the leading R_ which isn't carrying any
			   information.  */
			? ebl_reloc_type_name (ebl, GELF_R_TYPE (rel->r_info),
					       buf, sizeof (buf)) + 2
			: gettext ("<INVALID RELOC>"),
			gettext ("INVALID SECTION"),
			(long int) (sym->st_shndx == SHN_XINDEX
				    ? xndx : sym->st_shndx));
	      else
		printf ("\
  %#0*" PRIx64 "  %-15s %#0*" PRIx64 "  +%5" PRId64 " %s\n",
			class == ELFCLASS32 ? 10 : 18, rel->r_offset,
			ebl_reloc_type_check (ebl, GELF_R_TYPE (rel->r_info))
			/* Avoid the leading R_ which isn't carrying any
			   information.  */
			? ebl_reloc_type_name (ebl, GELF_R_TYPE (rel->r_info),
					       buf, sizeof (buf)) + 2
			: gettext ("<INVALID RELOC>"),
			class == ELFCLASS32 ? 10 : 18, sym->st_value,
			rel->r_addend,
			elf_strptr (ebl->elf, shstrndx, destshdr->sh_name));
	    }
	}
    }
}


/* Print the program header.  */
static void
print_symtab (Ebl *ebl, int type)
{
  /* Find the symbol table(s).  For this we have to search through the
     section table.  */
  Elf_Scn *scn = NULL;

  while ((scn = elf_nextscn (ebl->elf, scn)) != NULL)
    {
      /* Handle the section if it is a symbol table.  */
      GElf_Shdr shdr_mem;
      GElf_Shdr *shdr = gelf_getshdr (scn, &shdr_mem);

      if (shdr != NULL && shdr->sh_type == (GElf_Word) type)
	handle_symtab (ebl, scn, shdr);
    }
}


static void
handle_symtab (Ebl *ebl, Elf_Scn *scn, GElf_Shdr *shdr)
{
  Elf_Data *versym_data = NULL;
  Elf_Data *verneed_data = NULL;
  Elf_Data *verdef_data = NULL;
  Elf_Data *xndx_data = NULL;
  Elf_Scn *runscn;
  Elf_Data *data;
  int class = gelf_getclass (ebl->elf);
  unsigned int nsyms;
  unsigned int cnt;
  Elf32_Word verneed_stridx = 0;
  Elf32_Word verdef_stridx = 0;
  GElf_Shdr glink;
  size_t shstrndx;

  /* Get the data of the section.  */
  data = elf_getdata (scn, NULL);
  if (data == NULL)
    return;

  /* Find out whether we have other sections we might need.  */
  runscn = NULL;
  while ((runscn = elf_nextscn (ebl->elf, runscn)) != NULL)
    {
      GElf_Shdr runshdr_mem;
      GElf_Shdr *runshdr = gelf_getshdr (runscn, &runshdr_mem);

      if (runshdr != NULL)
	{
	  if (runshdr->sh_type == SHT_GNU_versym
	      && runshdr->sh_link == elf_ndxscn (scn))
	    /* Bingo, found the version information.  Now get the data.  */
	    versym_data = elf_getdata (runscn, NULL);
	  else if (runshdr->sh_type == SHT_GNU_verneed)
	    {
	      /* This is the information about the needed versions.  */
	      verneed_data = elf_getdata (runscn, NULL);
	      verneed_stridx = runshdr->sh_link;
	    }
	  else if (runshdr->sh_type == SHT_GNU_verdef)
	    {
	      /* This is the information about the defined versions.  */
	      verdef_data = elf_getdata (runscn, NULL);
	      verdef_stridx = runshdr->sh_link;
	    }
	  else if (runshdr->sh_type == SHT_SYMTAB_SHNDX
	      && runshdr->sh_link == elf_ndxscn (scn))
	    /* Extended section index.  */
	    xndx_data = elf_getdata (runscn, NULL);
	}
    }

  /* Get the section header string table index.  */
  if (elf_getshstrndx (ebl->elf, &shstrndx) < 0)
    error (EXIT_FAILURE, 0,
	   gettext ("cannot get section header string table index"));

  /* Now we can compute the number of entries in the section.  */
  nsyms = data->d_size / (class == ELFCLASS32
			  ? sizeof (Elf32_Sym) : sizeof (Elf64_Sym));

  printf (ngettext ("\nSymbol table [%2u] '%s' contains %u entry:\n",
		    "\nSymbol table [%2u] '%s' contains %u entries:\n",
		    nsyms),
	  (unsigned int) elf_ndxscn (scn),
	  elf_strptr (ebl->elf, shstrndx, shdr->sh_name), nsyms);
  printf (ngettext (" %lu local symbol  String table: [%2u] '%s'\n",
		    " %lu local symbols  String table: [%2u] '%s'\n",
		    shdr->sh_info),
	  (unsigned long int) shdr->sh_info,
	  (unsigned int) shdr->sh_link,
	  elf_strptr (ebl->elf, shstrndx,
		      gelf_getshdr (elf_getscn (ebl->elf, shdr->sh_link),
				    &glink)->sh_name));

  fputs_unlocked (class == ELFCLASS32
		  ? gettext ("\
  Num:    Value   Size Type    Bind   Vis          Ndx Name\n")
		  : gettext ("\
  Num:            Value   Size Type    Bind   Vis          Ndx Name\n"),
		  stdout);

  for (cnt = 0; cnt < nsyms; ++cnt)
    {
      char typebuf[64];
      char bindbuf[64];
      char scnbuf[64];
      Elf32_Word xndx;
      GElf_Sym sym_mem;
      GElf_Sym *sym = gelf_getsymshndx (data, xndx_data, cnt, &sym_mem, &xndx);

      if (sym == NULL)
	continue;

      /* Determine the real section index.  */
      if (sym->st_shndx != SHN_XINDEX)
	xndx = sym->st_shndx;

      printf (gettext ("\
%5u: %0*" PRIx64 " %6" PRId64 " %-7s %-6s %-9s %6s %s"),
	      cnt,
	      class == ELFCLASS32 ? 8 : 16,
	      sym->st_value,
	      sym->st_size,
	      ebl_symbol_type_name (ebl, GELF_ST_TYPE (sym->st_info),
				    typebuf, sizeof (typebuf)),
	      ebl_symbol_binding_name (ebl, GELF_ST_BIND (sym->st_info),
				       bindbuf, sizeof (bindbuf)),
	      get_visibility_type (GELF_ST_VISIBILITY (sym->st_other)),
	      ebl_section_name (ebl, sym->st_shndx, xndx, scnbuf,
				sizeof (scnbuf), NULL, shnum),
	      elf_strptr (ebl->elf, shdr->sh_link, sym->st_name));

      if (versym_data != NULL)
	{
	  /* Get the version information.  */
	  GElf_Versym versym_mem;
	  GElf_Versym *versym;

	  versym = gelf_getversym (versym_data, cnt, &versym_mem);

	  if (versym != NULL && ((*versym & 0x8000) != 0 || *versym > 1))
	    {
	      bool is_nobits = false;
	      bool check_def = xndx != SHN_UNDEF;

	      if (xndx < SHN_LORESERVE || sym->st_shndx == SHN_XINDEX)
		{
		  GElf_Shdr symshdr_mem;
		  GElf_Shdr *symshdr =
		    gelf_getshdr (elf_getscn (ebl->elf, xndx), &symshdr_mem);

		  is_nobits = (symshdr != NULL
			       && symshdr->sh_type == SHT_NOBITS);
		}

	      if (is_nobits || ! check_def)
		{
		  /* We must test both.  */
		  GElf_Verneed verneed_mem;
		  GElf_Verneed *verneed;
		  GElf_Vernaux vernaux_mem;
		  GElf_Vernaux *vernaux = NULL;
		  size_t vn_offset = 0;

		  verneed = gelf_getverneed (verneed_data, 0, &verneed_mem);
		  while (verneed != NULL)
		    {
		      size_t vna_offset = vn_offset;

		      vernaux = gelf_getvernaux (verneed_data,
						 vna_offset += verneed->vn_aux,
						 &vernaux_mem);
		      while (vernaux != NULL
			     && vernaux->vna_other != *versym
			     && vernaux->vna_next != 0)
			{
			  /* Update the offset.  */
			  vna_offset += vernaux->vna_next;

			  vernaux = (vernaux->vna_next == 0
				     ? NULL
				     : gelf_getvernaux (verneed_data,
							vna_offset,
							&vernaux_mem));
			}

		      /* Check whether we found the version.  */
		      if (vernaux != NULL && vernaux->vna_other == *versym)
			/* Found it.  */
			break;

		      vn_offset += verneed->vn_next;
		      verneed = (verneed->vn_next == 0
				 ? NULL
				 : gelf_getverneed (verneed_data, vn_offset,
						    &verneed_mem));
		    }

		  if (vernaux != NULL && vernaux->vna_other == *versym)
		    {
		      printf ("@%s (%u)",
			      elf_strptr (ebl->elf, verneed_stridx,
					  vernaux->vna_name),
			      (unsigned int) vernaux->vna_other);
		      check_def = 0;
		    }
		  else if (! is_nobits)
		    error (0, 0, gettext ("bad dynamic symbol"));
		  else
		    check_def = 1;
		}

	      if (check_def && *versym != 0x8001)
		{
		  /* We must test both.  */
		  GElf_Verdef verdef_mem;
		  GElf_Verdef *verdef;
		  size_t vd_offset = 0;

		  verdef = gelf_getverdef (verdef_data, 0, &verdef_mem);
		  while (verdef != NULL)
		    {
		      if (verdef->vd_ndx == (*versym & 0x7fff))
			/* Found the definition.  */
			break;

		      vd_offset += verdef->vd_next;
		      verdef = (verdef->vd_next == 0
				? NULL
				: gelf_getverdef (verdef_data, vd_offset,
						  &verdef_mem));
		    }

		  if (verdef != NULL)
		    {
		      GElf_Verdaux verdaux_mem;
		      GElf_Verdaux *verdaux;

		      verdaux = gelf_getverdaux (verdef_data,
						 vd_offset + verdef->vd_aux,
						 &verdaux_mem);

		      if (verdaux != NULL)
			printf ((*versym & 0x8000) ? "@%s" : "@@%s",
				elf_strptr (ebl->elf, verdef_stridx,
					    verdaux->vda_name));
		    }
		}
	    }
	}

      putchar ('\n');
    }
}


/* Print version information.  */
static void
print_verinfo (Ebl *ebl)
{
  /* Find the version information sections.  For this we have to
     search through the section table.  */
  Elf_Scn *scn = NULL;

  while ((scn = elf_nextscn (ebl->elf, scn)) != NULL)
    {
      /* Handle the section if it is part of the versioning handling.  */
      GElf_Shdr shdr_mem;
      GElf_Shdr *shdr = gelf_getshdr (scn, &shdr_mem);

      if (shdr != NULL)
	{
	  if (shdr->sh_type == SHT_GNU_verneed)
	    handle_verneed (ebl, scn, shdr);
	  else if (shdr->sh_type == SHT_GNU_verdef)
	    handle_verdef (ebl, scn, shdr);
	  else if (shdr->sh_type == SHT_GNU_versym)
	    handle_versym (ebl, scn, shdr);
	}
    }
}


static const char *
get_ver_flags (unsigned int flags)
{
  static char buf[32];
  char *endp;

  if (flags == 0)
    return gettext ("none");

  if (flags & VER_FLG_BASE)
    endp = stpcpy (buf, "BASE ");
  else
    endp = buf;

  if (flags & VER_FLG_WEAK)
    {
      if (endp != buf)
        endp = stpcpy (endp, "| ");

      endp = stpcpy (endp, "WEAK ");
    }

  if (flags & ~(VER_FLG_BASE | VER_FLG_WEAK))
    {
      strncpy (endp, gettext ("| <unknown>"), buf + sizeof (buf) - endp);
      buf[sizeof (buf) - 1] = '\0';
    }

  return buf;
}


static void
handle_verneed (Ebl *ebl, Elf_Scn *scn, GElf_Shdr *shdr)
{
  Elf_Data *data;
  int class = gelf_getclass (ebl->elf);
  GElf_Shdr glink;
  int cnt;
  unsigned int offset;
  size_t shstrndx;

  /* Get the data of the section.  */
  data = elf_getdata (scn, NULL);
  if (data == NULL)
    return;

  /* Get the section header string table index.  */
  if (elf_getshstrndx (ebl->elf, &shstrndx) < 0)
    error (EXIT_FAILURE, 0,
	   gettext ("cannot get section header string table index"));

  printf (ngettext ("\
\nVersion needs section [%2u] '%s' contains %d entry:\n Addr: %#0*" PRIx64 "  Offset: %#08" PRIx64 "  Link to section: [%2u] '%s'\n",
		    "\
\nVersion needs section [%2u] '%s' contains %d entries:\n Addr: %#0*" PRIx64 "  Offset: %#08" PRIx64 "  Link to section: [%2u] '%s'\n",
		    shdr->sh_info),
	  (unsigned int) elf_ndxscn (scn),
	  elf_strptr (ebl->elf, shstrndx, shdr->sh_name), shdr->sh_info,
	  class == ELFCLASS32 ? 10 : 18, shdr->sh_addr,
	  shdr->sh_offset,
	  (unsigned int) shdr->sh_link,
	  elf_strptr (ebl->elf, shstrndx,
		      gelf_getshdr (elf_getscn (ebl->elf, shdr->sh_link),
				    &glink)->sh_name));

  offset = 0;
  for (cnt = shdr->sh_info; --cnt >= 0; )
    {
      GElf_Verneed needmem;
      GElf_Verneed *need;
      unsigned int auxoffset;
      int cnt2;

      /* Get the data at the next offset.  */
      need = gelf_getverneed (data, offset, &needmem);
      if (need == NULL)
	break;

      printf (gettext ("  %#06x: Version: %hu  File: %s  Cnt: %hu\n"),
	      offset, (unsigned short int) need->vn_version,
	      elf_strptr (ebl->elf, shdr->sh_link, need->vn_file),
	      (unsigned short int) need->vn_cnt);

      auxoffset = offset + need->vn_aux;
      for (cnt2 = need->vn_cnt; --cnt2 >= 0; )
	{
	  GElf_Vernaux auxmem;
	  GElf_Vernaux *aux;

	  aux = gelf_getvernaux (data, auxoffset, &auxmem);
	  if (aux == NULL)
	    break;

	  printf (gettext ("  %#06x: Name: %s  Flags: %s  Version: %hu\n"),
		  auxoffset,
		  elf_strptr (ebl->elf, shdr->sh_link, aux->vna_name),
		  get_ver_flags (aux->vna_flags),
		  (unsigned short int) aux->vna_other);

	  auxoffset += aux->vna_next;
	}

      /* Find the next offset.  */
      offset += need->vn_next;
    }
}


static void
handle_verdef (Ebl *ebl, Elf_Scn *scn, GElf_Shdr *shdr)
{
  Elf_Data *data;
  int class = gelf_getclass (ebl->elf);
  GElf_Shdr glink;
  int cnt;
  unsigned int offset;
  size_t shstrndx;

  /* Get the data of the section.  */
  data = elf_getdata (scn, NULL);
  if (data == NULL)
    return;

  /* Get the section header string table index.  */
  if (elf_getshstrndx (ebl->elf, &shstrndx) < 0)
    error (EXIT_FAILURE, 0,
	   gettext ("cannot get section header string table index"));

  printf (ngettext ("\
\nVersion definition section [%2u] '%s' contains %d entry:\n Addr: %#0*" PRIx64 "  Offset: %#08" PRIx64 "  Link to section: [%2u] '%s'\n",
		    "\
\nVersion definition section [%2u] '%s' contains %d entries:\n Addr: %#0*" PRIx64 "  Offset: %#08" PRIx64 "  Link to section: [%2u] '%s'\n",
		    shdr->sh_info),
	  (unsigned int) elf_ndxscn (scn),
	  elf_strptr (ebl->elf, shstrndx, shdr->sh_name),
	  shdr->sh_info,
	  class == ELFCLASS32 ? 10 : 18, shdr->sh_addr,
	  shdr->sh_offset,
	  (unsigned int) shdr->sh_link,
	  elf_strptr (ebl->elf, shstrndx,
		      gelf_getshdr (elf_getscn (ebl->elf, shdr->sh_link),
				    &glink)->sh_name));

  offset = 0;
  for (cnt = shdr->sh_info; --cnt >= 0; )
    {
      GElf_Verdef defmem;
      GElf_Verdef *def;
      GElf_Verdaux auxmem;
      GElf_Verdaux *aux;
      unsigned int auxoffset;
      int cnt2;

      /* Get the data at the next offset.  */
      def = gelf_getverdef (data, offset, &defmem);
      if (def == NULL)
	break;

      auxoffset = offset + def->vd_aux;
      aux = gelf_getverdaux (data, auxoffset, &auxmem);
      if (aux == NULL)
	break;

      printf (gettext ("\
  %#06x: Version: %hd  Flags: %s  Index: %hd  Cnt: %hd  Name: %s\n"),
	      offset, def->vd_version,
	      get_ver_flags (def->vd_flags),
	      def->vd_ndx,
	      def->vd_cnt,
	      elf_strptr (ebl->elf, shdr->sh_link, aux->vda_name));

      auxoffset += aux->vda_next;
      for (cnt2 = 1; cnt2 < def->vd_cnt; ++cnt2)
	{
	  aux = gelf_getverdaux (data, auxoffset, &auxmem);
	  if (aux == NULL)
	    break;

	  printf (gettext ("  %#06x: Parent %d: %s\n"),
		  auxoffset, cnt2,
		  elf_strptr (ebl->elf, shdr->sh_link, aux->vda_name));

	  auxoffset += aux->vda_next;
	}

      /* Find the next offset.  */
      offset += def->vd_next;
    }
}


static void
handle_versym (Ebl *ebl, Elf_Scn *scn, GElf_Shdr *shdr)
{
  Elf_Data *data;
  int class = gelf_getclass (ebl->elf);
  Elf_Scn *verscn;
  GElf_Shdr glink;
  Elf_Scn *defscn;
  Elf_Scn *needscn;
  const char **vername;
  const char **filename;
  size_t nvername;
  unsigned int cnt;
  size_t shstrndx;

  /* Get the data of the section.  */
  data = elf_getdata (scn, NULL);
  if (data == NULL)
    return;

  /* Get the section header string table index.  */
  if (elf_getshstrndx (ebl->elf, &shstrndx) < 0)
    error (EXIT_FAILURE, 0,
	   gettext ("cannot get section header string table index"));

  /* We have to find the version definition section and extract the
     version names.  */
  defscn = NULL;
  needscn = NULL;

  verscn = NULL;
  while ((verscn = elf_nextscn (ebl->elf, verscn)) != NULL)
    {
      GElf_Shdr vershdr_mem;
      GElf_Shdr *vershdr = gelf_getshdr (verscn, &vershdr_mem);

      if (vershdr != NULL)
	{
	  if (vershdr->sh_type == SHT_GNU_verdef)
	    defscn = verscn;
	  else if (vershdr->sh_type == SHT_GNU_verneed)
	    needscn = verscn;
	}
    }

  if (defscn != NULL || needscn != NULL)
    {
      /* We have a version information (better should have).  Now get
	 the version names.  First find the maximum version number.  */
      nvername = 0;
      if (defscn != NULL)
	{
	  /* Run through the version definitions and find the highest
	     index.  */
	  unsigned int offset = 0;
	  Elf_Data *defdata;
	  GElf_Shdr defshdrmem;
	  GElf_Shdr *defshdr;

	  defdata = elf_getdata (defscn, NULL);
	  if (defdata == NULL)
	    return;

	  defshdr = gelf_getshdr (defscn, &defshdrmem);
	  if (defshdr == NULL)
	    return;

	  for (cnt = 0; cnt < defshdr->sh_info; ++cnt)
	    {
	      GElf_Verdef defmem;
	      GElf_Verdef *def;

	      /* Get the data at the next offset.  */
	      def = gelf_getverdef (defdata, offset, &defmem);
	      if (def == NULL)
		break;

	      nvername = MAX (nvername, (size_t) (def->vd_ndx & 0x7fff));

	      offset += def->vd_next;
	    }
	}
      if (needscn != NULL)
	{
	  unsigned int offset = 0;
	  Elf_Data *needdata;
	  GElf_Shdr needshdrmem;
	  GElf_Shdr *needshdr;

	  needdata = elf_getdata (needscn, NULL);
	  if (needdata == NULL)
	    return;

	  needshdr = gelf_getshdr (needscn, &needshdrmem);
	  if (needshdr == NULL)
	    return;

	  for (cnt = 0; cnt < needshdr->sh_info; ++cnt)
	    {
	      GElf_Verneed needmem;
	      GElf_Verneed *need;
	      unsigned int auxoffset;
	      int cnt2;

	      /* Get the data at the next offset.  */
	      need = gelf_getverneed (needdata, offset, &needmem);
	      if (need == NULL)
		break;

	      /* Run through the auxiliary entries.  */
	      auxoffset = offset + need->vn_aux;
	      for (cnt2 = need->vn_cnt; --cnt2 >= 0; )
		{
		  GElf_Vernaux auxmem;
		  GElf_Vernaux *aux;

		  aux = gelf_getvernaux (needdata, auxoffset, &auxmem);
		  if (aux == NULL)
		    break;

		  nvername = MAX (nvername,
				  (size_t) (aux->vna_other & 0x7fff));

		  auxoffset += aux->vna_next;
		}

	      offset += need->vn_next;
	    }
	}

      /* This is the number of versions we know about.  */
      ++nvername;

      /* Allocate the array.  */
      vername = (const char **) alloca (nvername * sizeof (const char *));
      filename = (const char **) alloca (nvername * sizeof (const char *));

      /* Run through the data structures again and collect the strings.  */
      if (defscn != NULL)
	{
	  /* Run through the version definitions and find the highest
	     index.  */
	  unsigned int offset = 0;
	  Elf_Data *defdata;
	  GElf_Shdr defshdrmem;
	  GElf_Shdr *defshdr;

	  defdata = elf_getdata (defscn, NULL);
	  if (defdata == NULL)
	    return;

	  defshdr = gelf_getshdr (defscn, &defshdrmem);
	  if (defshdr == NULL)
	    return;

	  for (cnt = 0; cnt < defshdr->sh_info; ++cnt)
	    {
	      GElf_Verdef defmem;
	      GElf_Verdef *def;
	      GElf_Verdaux auxmem;
	      GElf_Verdaux *aux;

	      /* Get the data at the next offset.  */
	      def = gelf_getverdef (defdata, offset, &defmem);
	      if (def == NULL)
		break;

	      aux = gelf_getverdaux (defdata, offset + def->vd_aux, &auxmem);
	      if (aux == NULL)
		break;

	      vername[def->vd_ndx & 0x7fff]
		= elf_strptr (ebl->elf, defshdr->sh_link, aux->vda_name);
	      filename[def->vd_ndx & 0x7fff] = NULL;

	      offset += def->vd_next;
	    }
	}
      if (needscn != NULL)
	{
	  unsigned int offset = 0;
	  Elf_Data *needdata;
	  GElf_Shdr needshdrmem;
	  GElf_Shdr *needshdr;

	  needdata = elf_getdata (needscn, NULL);
	  if (needdata == NULL)
	    return;

	  needshdr = gelf_getshdr (needscn, &needshdrmem);
	  if (needshdr == NULL)
	    return;

	  for (cnt = 0; cnt < needshdr->sh_info; ++cnt)
	    {
	      GElf_Verneed needmem;
	      GElf_Verneed *need;
	      unsigned int auxoffset;
	      int cnt2;

	      /* Get the data at the next offset.  */
	      need = gelf_getverneed (needdata, offset, &needmem);
	      if (need == NULL)
		break;

	      /* Run through the auxiliary entries.  */
	      auxoffset = offset + need->vn_aux;
	      for (cnt2 = need->vn_cnt; --cnt2 >= 0; )
		{
		  GElf_Vernaux auxmem;
		  GElf_Vernaux *aux;

		  aux = gelf_getvernaux (needdata, auxoffset, &auxmem);
		  if (aux == NULL)
		    break;

		  vername[aux->vna_other & 0x7fff]
		    = elf_strptr (ebl->elf, needshdr->sh_link, aux->vna_name);
		  filename[aux->vna_other & 0x7fff]
		    = elf_strptr (ebl->elf, needshdr->sh_link, need->vn_file);

		  auxoffset += aux->vna_next;
		}

	      offset += need->vn_next;
	    }
	}
    }
  else
    {
      vername = NULL;
      nvername = 1;
      filename = NULL;
    }

  /* Print the header.  */
  printf (ngettext ("\
\nVersion symbols section [%2u] '%s' contains %d entry:\n Addr: %#0*" PRIx64 "  Offset: %#08" PRIx64 "  Link to section: [%2u] '%s'",
		    "\
\nVersion symbols section [%2u] '%s' contains %d entries:\n Addr: %#0*" PRIx64 "  Offset: %#08" PRIx64 "  Link to section: [%2u] '%s'",
		    shdr->sh_size / shdr->sh_entsize),
	  (unsigned int) elf_ndxscn (scn),
	  elf_strptr (ebl->elf, shstrndx, shdr->sh_name),
	  (int) (shdr->sh_size / shdr->sh_entsize),
	  class == ELFCLASS32 ? 10 : 18, shdr->sh_addr,
	  shdr->sh_offset,
	  (unsigned int) shdr->sh_link,
	  elf_strptr (ebl->elf, shstrndx,
		      gelf_getshdr (elf_getscn (ebl->elf, shdr->sh_link),
				    &glink)->sh_name));

  /* Now we can finally look at the actual contents of this section.  */
  for (cnt = 0; cnt < shdr->sh_size / shdr->sh_entsize; ++cnt)
    {
      GElf_Versym symmem;
      GElf_Versym *sym;
      ssize_t n;

      if (cnt % 2 == 0)
	printf ("\n %4d:", cnt);

      sym = gelf_getversym (data, cnt, &symmem);
      if (sym == NULL)
	break;

      switch (*sym)
	{
	case 0:
	  fputs_unlocked (gettext ("   0 *local*                     "),
			  stdout);
	  break;

	case 1:
	  fputs_unlocked (gettext ("   1 *global*                    "),
			  stdout);
	  break;

	default:
	  n = printf ("%4d%c%s",
		      *sym & 0x7fff, *sym & 0x8000 ? 'h' : ' ',
		      (unsigned int) (*sym & 0x7fff) < nvername
		      ? vername[*sym & 0x7fff] : "???");
	  if ((unsigned int) (*sym & 0x7fff) < nvername
	      && filename[*sym & 0x7fff] != NULL)
	    n += printf ("(%s)", filename[*sym & 0x7fff]);
	  printf ("%*s", MAX (0, 33 - (int) n), " ");
	  break;
	}
    }
  putchar ('\n');
}


static void
handle_hash (Ebl *ebl)
{
  /* Find the symbol table(s).  For this we have to search through the
     section table.  */
  Elf_Scn *scn = NULL;
  size_t shstrndx;

  /* Get the section header string table index.  */
  if (elf_getshstrndx (ebl->elf, &shstrndx) < 0)
    error (EXIT_FAILURE, 0,
	   gettext ("cannot get section header string table index"));

  while ((scn = elf_nextscn (ebl->elf, scn)) != NULL)
    {
      /* Handle the section if it is a symbol table.  */
      GElf_Shdr shdr_mem;
      GElf_Shdr *shdr = gelf_getshdr (scn, &shdr_mem);

      if (shdr != NULL && shdr->sh_type == SHT_HASH)
	{
	  Elf_Data *data = elf_getdata (scn, NULL);
	  Elf32_Word nbucket;
	  Elf32_Word nchain;
	  Elf32_Word *bucket;
	  Elf32_Word *chain;
	  uint32_t *lengths;
	  uint32_t *counts;
	  Elf32_Word cnt;
	  Elf32_Word maxlength = 0;
	  Elf32_Word nsyms = 0;
	  uint64_t nzero_counts = 0;
	  GElf_Shdr glink;

	  if (data == NULL)
	    {
	      error (0, 0, gettext ("cannot get data for section %d: %s"),
		     (int) elf_ndxscn (scn), elf_errmsg (-1));
	      continue;
	    }

	  nbucket = ((Elf32_Word *) data->d_buf)[0];
	  nchain = ((Elf32_Word *) data->d_buf)[1];
	  bucket = &((Elf32_Word *) data->d_buf)[2];
	  chain = &((Elf32_Word *) data->d_buf)[2 + nbucket];

	  printf (ngettext ("\
\nHistogram for bucket list length in section [%2u] '%s' (total of %d bucket):\n Addr: %#0*" PRIx64 "  Offset: %#08" PRIx64 "  Link to section: [%2u] '%s'\n",
			    "\
\nHistogram for bucket list length in section [%2u] '%s' (total of %d buckets):\n Addr: %#0*" PRIx64 "  Offset: %#08" PRIx64 "  Link to section: [%2u] '%s'\n",
			    nbucket),
		  (unsigned int) elf_ndxscn (scn),
		  elf_strptr (ebl->elf, shstrndx, shdr->sh_name),
		  (int) nbucket,
		  gelf_getclass (ebl->elf) == ELFCLASS32 ? 10 : 18,
		  shdr->sh_addr,
		  shdr->sh_offset,
		  (unsigned int) shdr->sh_link,
		  elf_strptr (ebl->elf, shstrndx,
			      gelf_getshdr (elf_getscn (ebl->elf,
							shdr->sh_link),
					    &glink)->sh_name));

	  lengths = (uint32_t *) xcalloc (nbucket, sizeof (uint32_t));

	  for (cnt = 0; cnt < nbucket; ++cnt)
	    if (bucket[cnt] != 0)
	      {
		Elf32_Word inner;

		inner = bucket[cnt];
		while (inner > 0 && inner < nchain)
		  {
		    ++nsyms;
		    if (maxlength < ++lengths[cnt])
		      ++maxlength;

		    inner = chain[inner];
		  }
	      }

	  counts = (uint32_t *) xcalloc (maxlength + 1, sizeof (uint32_t));

	  for (cnt = 0; cnt < nbucket; ++cnt)
	    ++counts[lengths[cnt]];

	  if (nbucket > 0)
	    {
	      uint64_t success = 0;
	      Elf32_Word acc;

	      puts (gettext (" Length  Number  % of total  Coverage"));
	      printf (gettext ("      0  %6" PRIu32 "      %5.1f%%\n"),
		      counts[0], (counts[0] * 100.0) / nbucket);

	      for (cnt = 1; cnt <= maxlength; ++cnt)
		{
		  nzero_counts += counts[cnt] * cnt;
		  printf (gettext ("\
%7d  %6" PRIu32 "      %5.1f%%    %5.1f%%\n"),
			  (int) cnt,
			  counts[cnt], (counts[cnt] * 100.0) / nbucket,
			  (nzero_counts * 100.0) / nsyms);
		}

	      acc = 0;
	      for (cnt = 1; cnt <= maxlength; ++cnt)
		{
		  acc += cnt;
		  success += counts[cnt] * acc;
		}

	      printf (gettext ("\
 Average number of tests:   successful lookup: %f\n\
                          unsuccessful lookup: %f\n"),
		      (double) success / (double) nzero_counts,
		      (double) nzero_counts / (double) nbucket);
	    }

	  free (counts);
	  free (lengths);
	}
    }
}


static void
print_liblist (Ebl *ebl)
{
  /* Find the library list sections.  For this we have to search
     through the section table.  */
  Elf_Scn *scn = NULL;

  /* Get the section header string table index.  */
  size_t shstrndx;
  if (elf_getshstrndx (ebl->elf, &shstrndx) < 0)
    error (EXIT_FAILURE, 0,
	   gettext ("cannot get section header string table index"));

  while ((scn = elf_nextscn (ebl->elf, scn)) != NULL)
    {
      GElf_Shdr shdr_mem;
      GElf_Shdr *shdr = gelf_getshdr (scn, &shdr_mem);

      if (shdr != NULL && shdr->sh_type == SHT_GNU_LIBLIST)
	{
	  int nentries = shdr->sh_size / shdr->sh_entsize;
	  printf (ngettext ("\
\nLibrary list section [%2zu] '%s' at offset %#0" PRIx64 " contains %d entry:\n",
			    "\
\nLibrary list section [%2zu] '%s' at offset %#0" PRIx64 " contains %d entries:\n",
			    nentries),
		  elf_ndxscn (scn),
		  elf_strptr (ebl->elf, shstrndx, shdr->sh_name),
		  shdr->sh_offset,
		  nentries);

	  Elf_Data *data = elf_getdata (scn, NULL);
	  if (data == NULL)
	    return;

	  puts (gettext ("\
       Library                       Time Stamp          Checksum Version Flags"));

	  for (int cnt = 0; cnt < nentries; ++cnt)
	    {
	      GElf_Lib lib_mem;
	      GElf_Lib *lib = gelf_getlib (data, cnt, &lib_mem);
	      if (lib == NULL)
		continue;

	      time_t t = (time_t) lib->l_time_stamp;
	      struct tm *tm = gmtime (&t);
	      if (tm == NULL)
		continue;

	      printf ("  [%2d] %-29s %04u-%02u-%02uT%02u:%02u:%02u %08x %-7u %u\n",
		      cnt, elf_strptr (ebl->elf, shdr->sh_link, lib->l_name),
		      tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday,
		      tm->tm_hour, tm->tm_min, tm->tm_sec,
		      (unsigned int) lib->l_checksum,
		      (unsigned int) lib->l_version,
		      (unsigned int) lib->l_flags);
	    }
	}
    }
}


static const char *
dwarf_tag_string (unsigned int tag)
{
  static const char *known_tags[]  =
    {
      [DW_TAG_array_type] = "array_type",
      [DW_TAG_class_type] = "class_type",
      [DW_TAG_entry_point] = "entry_point",
      [DW_TAG_enumeration_type] = "enumeration_type",
      [DW_TAG_formal_parameter] = "formal_parameter",
      [DW_TAG_imported_declaration] = "imported_declaration",
      [DW_TAG_label] = "label",
      [DW_TAG_lexical_block] = "lexical_block",
      [DW_TAG_member] = "member",
      [DW_TAG_pointer_type] = "pointer_type",
      [DW_TAG_reference_type] = "reference_type",
      [DW_TAG_compile_unit] = "compile_unit",
      [DW_TAG_string_type] = "string_type",
      [DW_TAG_structure_type] = "structure_type",
      [DW_TAG_subroutine_type] = "subroutine_type",
      [DW_TAG_typedef] = "typedef",
      [DW_TAG_union_type] = "union_type",
      [DW_TAG_unspecified_parameters] = "unspecified_parameters",
      [DW_TAG_variant] = "variant",
      [DW_TAG_common_block] = "common_block",
      [DW_TAG_common_inclusion] = "common_inclusion",
      [DW_TAG_inheritance] = "inheritance",
      [DW_TAG_inlined_subroutine] = "inlined_subroutine",
      [DW_TAG_module] = "module",
      [DW_TAG_ptr_to_member_type] = "ptr_to_member_type",
      [DW_TAG_set_type] = "set_type",
      [DW_TAG_subrange_type] = "subrange_type",
      [DW_TAG_with_stmt] = "with_stmt",
      [DW_TAG_access_declaration] = "access_declaration",
      [DW_TAG_base_type] = "base_type",
      [DW_TAG_catch_block] = "catch_block",
      [DW_TAG_const_type] = "const_type",
      [DW_TAG_constant] = "constant",
      [DW_TAG_enumerator] = "enumerator",
      [DW_TAG_file_type] = "file_type",
      [DW_TAG_friend] = "friend",
      [DW_TAG_namelist] = "namelist",
      [DW_TAG_namelist_item] = "namelist_item",
      [DW_TAG_packed_type] = "packed_type",
      [DW_TAG_subprogram] = "subprogram",
      [DW_TAG_template_type_param] = "template_type_param",
      [DW_TAG_template_value_param] = "template_value_param",
      [DW_TAG_thrown_type] = "thrown_type",
      [DW_TAG_try_block] = "try_block",
      [DW_TAG_variant_part] = "variant_part",
      [DW_TAG_variable] = "variable",
      [DW_TAG_volatile_type] = "volatile_type",
      [DW_TAG_dwarf_procedure] = "dwarf_procedure",
      [DW_TAG_restrict_type] = "restrict_type",
      [DW_TAG_interface_type] = "interface_type",
      [DW_TAG_namespace] = "namespace",
      [DW_TAG_imported_module] = "imported_module",
      [DW_TAG_unspecified_type] = "unspecified_type",
      [DW_TAG_partial_unit] = "partial_unit",
      [DW_TAG_imported_unit] = "imported_unit",
      [DW_TAG_unspecified_type] = "unspecified_type",
      [DW_TAG_partial_unit] = "partial_unit",
      [DW_TAG_imported_unit] = "imported_unit",
      [DW_TAG_mutable_type] = "mutable_type",
    };
  const unsigned int nknown_tags = (sizeof (known_tags)
				    / sizeof (known_tags[0]));
  static char buf[40];
  const char *result = NULL;

  if (tag < nknown_tags)
    result = known_tags[tag];

  if (result == NULL)
    /* There are a few known extensions.  */
    switch (tag)
      {
      case DW_TAG_MIPS_loop:
	result = "MIPS_loop";
	break;

      case DW_TAG_format_label:
	result = "format_label";
	break;

      case DW_TAG_function_template:
	result = "function_template";
	break;

      case DW_TAG_class_template:
	result = "class_template";
	break;

      default:
	if (tag < DW_TAG_lo_user)
	  snprintf (buf, sizeof buf, gettext ("unknown tag %hx"), tag);
	else
	  snprintf (buf, sizeof buf, gettext ("unknown user tag %hx"), tag);
	result = buf;
	break;
      }

  return result;
}


static const char *
dwarf_attr_string (unsigned int attrnum)
{
  static const char *known_attrs[] =
    {
      [DW_AT_sibling] = "sibling",
      [DW_AT_location] = "location",
      [DW_AT_name] = "name",
      [DW_AT_ordering] = "ordering",
      [DW_AT_subscr_data] = "subscr_data",
      [DW_AT_byte_size] = "byte_size",
      [DW_AT_bit_offset] = "bit_offset",
      [DW_AT_bit_size] = "bit_size",
      [DW_AT_element_list] = "element_list",
      [DW_AT_stmt_list] = "stmt_list",
      [DW_AT_low_pc] = "low_pc",
      [DW_AT_high_pc] = "high_pc",
      [DW_AT_language] = "language",
      [DW_AT_member] = "member",
      [DW_AT_discr] = "discr",
      [DW_AT_discr_value] = "discr_value",
      [DW_AT_visibility] = "visibility",
      [DW_AT_import] = "import",
      [DW_AT_string_length] = "string_length",
      [DW_AT_common_reference] = "common_reference",
      [DW_AT_comp_dir] = "comp_dir",
      [DW_AT_const_value] = "const_value",
      [DW_AT_containing_type] = "containing_type",
      [DW_AT_default_value] = "default_value",
      [DW_AT_inline] = "inline",
      [DW_AT_is_optional] = "is_optional",
      [DW_AT_lower_bound] = "lower_bound",
      [DW_AT_producer] = "producer",
      [DW_AT_prototyped] = "prototyped",
      [DW_AT_return_addr] = "return_addr",
      [DW_AT_start_scope] = "start_scope",
      [DW_AT_stride_size] = "stride_size",
      [DW_AT_upper_bound] = "upper_bound",
      [DW_AT_abstract_origin] = "abstract_origin",
      [DW_AT_accessibility] = "accessibility",
      [DW_AT_address_class] = "address_class",
      [DW_AT_artificial] = "artificial",
      [DW_AT_base_types] = "base_types",
      [DW_AT_calling_convention] = "calling_convention",
      [DW_AT_count] = "count",
      [DW_AT_data_member_location] = "data_member_location",
      [DW_AT_decl_column] = "decl_column",
      [DW_AT_decl_file] = "decl_file",
      [DW_AT_decl_line] = "decl_line",
      [DW_AT_declaration] = "declaration",
      [DW_AT_discr_list] = "discr_list",
      [DW_AT_encoding] = "encoding",
      [DW_AT_external] = "external",
      [DW_AT_frame_base] = "frame_base",
      [DW_AT_friend] = "friend",
      [DW_AT_identifier_case] = "identifier_case",
      [DW_AT_macro_info] = "macro_info",
      [DW_AT_namelist_items] = "namelist_items",
      [DW_AT_priority] = "priority",
      [DW_AT_segment] = "segment",
      [DW_AT_specification] = "specification",
      [DW_AT_static_link] = "static_link",
      [DW_AT_type] = "type",
      [DW_AT_use_location] = "use_location",
      [DW_AT_variable_parameter] = "variable_parameter",
      [DW_AT_virtuality] = "virtuality",
      [DW_AT_vtable_elem_location] = "vtable_elem_location",
      [DW_AT_allocated] = "allocated",
      [DW_AT_associated] = "associated",
      [DW_AT_data_location] = "data_location",
      [DW_AT_stride] = "stride",
      [DW_AT_entry_pc] = "entry_pc",
      [DW_AT_use_UTF8] = "use_UTF8",
      [DW_AT_extension] = "extension",
      [DW_AT_ranges] = "ranges",
      [DW_AT_trampoline] = "trampoline",
      [DW_AT_call_column] = "call_column",
      [DW_AT_call_file] = "call_file",
      [DW_AT_call_line] = "call_line",
      [DW_AT_description] = "description"
    };
  const unsigned int nknown_attrs = (sizeof (known_attrs)
				     / sizeof (known_attrs[0]));
  static char buf[40];
  const char *result = NULL;

  if (attrnum < nknown_attrs)
    result = known_attrs[attrnum];

  if (result == NULL)
    /* There are a few known extensions.  */
    switch (attrnum)
      {
      case DW_AT_MIPS_fde:
	result = "MIPS_fde";
	break;

      case DW_AT_MIPS_loop_begin:
	result = "MIPS_loop_begin";
	break;

      case DW_AT_MIPS_tail_loop_begin:
	result = "MIPS_tail_loop_begin";
	break;

      case DW_AT_MIPS_epilog_begin:
	result = "MIPS_epilog_begin";
	break;

      case DW_AT_MIPS_loop_unroll_factor:
	result = "MIPS_loop_unroll_factor";
	break;

      case DW_AT_MIPS_software_pipeline_depth:
	result = "MIPS_software_pipeline_depth";
	break;

      case DW_AT_MIPS_linkage_name:
	result = "MIPS_linkage_name";
	break;

      case DW_AT_MIPS_stride:
	result = "MIPS_stride";
	break;

      case DW_AT_MIPS_abstract_name:
	result = "MIPS_abstract_name";
	break;

      case DW_AT_MIPS_clone_origin:
	result = "MIPS_clone_origin";
	break;

      case DW_AT_MIPS_has_inlines:
	result = "MIPS_has_inlines";
	break;

      case DW_AT_MIPS_stride_byte:
	result = "MIPS_stride_byte";
	break;

      case DW_AT_MIPS_stride_elem:
	result = "MIPS_stride_elem";
	break;

      case DW_AT_MIPS_ptr_dopetype:
	result = "MIPS_ptr_dopetype";
	break;

      case DW_AT_MIPS_allocatable_dopetype:
	result = "MIPS_allocatable_dopetype";
	break;

      case DW_AT_MIPS_assumed_shape_dopetype:
	result = "MIPS_assumed_shape_dopetype";
	break;

      case DW_AT_MIPS_assumed_size:
	result = "MIPS_assumed_size";
	break;

      case DW_AT_sf_names:
	result = "sf_names";
	break;

      case DW_AT_src_info:
	result = "src_info";
	break;

      case DW_AT_mac_info:
	result = "mac_info";
	break;

      case DW_AT_src_coords:
	result = "src_coords";
	break;

      case DW_AT_body_begin:
	result = "body_begin";
	break;

      case DW_AT_body_end:
	result = "body_end";
	break;

      default:
	if (attrnum < DW_AT_lo_user)
	  snprintf (buf, sizeof buf, gettext ("unknown attribute %hx"),
		    attrnum);
	else
	  snprintf (buf, sizeof buf, gettext ("unknown user attribute %hx"),
		    attrnum);
	result = buf;
	break;
      }

  return result;
}


static const char *
dwarf_form_string (unsigned int form)
{
  static const char *known_forms[] =
    {
      [DW_FORM_addr] = "addr",
      [DW_FORM_block2] = "block2",
      [DW_FORM_block4] = "block4",
      [DW_FORM_data2] = "data2",
      [DW_FORM_data4] = "data4",
      [DW_FORM_data8] = "data8",
      [DW_FORM_string] = "string",
      [DW_FORM_block] = "block",
      [DW_FORM_block1] = "block1",
      [DW_FORM_data1] = "data1",
      [DW_FORM_flag] = "flag",
      [DW_FORM_sdata] = "sdata",
      [DW_FORM_strp] = "strp",
      [DW_FORM_udata] = "udata",
      [DW_FORM_ref_addr] = "ref_addr",
      [DW_FORM_ref1] = "ref1",
      [DW_FORM_ref2] = "ref2",
      [DW_FORM_ref4] = "ref4",
      [DW_FORM_ref8] = "ref8",
      [DW_FORM_ref_udata] = "ref_udata",
      [DW_FORM_indirect] = "indirect"
    };
  const unsigned int nknown_forms = (sizeof (known_forms)
				     / sizeof (known_forms[0]));
  static char buf[40];
  const char *result = NULL;

  if (form < nknown_forms)
    result = known_forms[form];

  if (result == NULL)
    snprintf (buf, sizeof buf, gettext ("unknown form %" PRIx64),
	      (uint64_t) form);

  return result;
}


static const char *
dwarf_lang_string (unsigned int lang)
{
  static const char *known[] =
    {
      [DW_LANG_C89] = "ISO C89",
      [DW_LANG_C] = "C",
      [DW_LANG_Ada83] = "Ada83",
      [DW_LANG_C_plus_plus ] = "C++",
      [DW_LANG_Cobol74] = "Cobol74",
      [DW_LANG_Cobol85] = "Cobol85",
      [DW_LANG_Fortran77] = "Fortran77",
      [DW_LANG_Fortran90] = "Fortran90",
      [DW_LANG_Pascal83] = "Pascal83",
      [DW_LANG_Modula2] = "Modula2",
      [DW_LANG_Java] = "Java",
      [DW_LANG_C99] = "ISO C99",
      [DW_LANG_Ada95] = "Ada95",
      [DW_LANG_Fortran95] = "Fortran95",
      [DW_LANG_PL1] = "PL1"
    };

  if (lang < sizeof (known) / sizeof (known[0]))
    return known[lang];
  else if (lang == DW_LANG_Mips_Assembler)
    /* This language tag is used for assembler in general.  */
    return "Assembler";

  if (lang >= DW_LANG_lo_user && lang <= DW_LANG_hi_user)
    {
      static char buf[30];
      snprintf (buf, sizeof (buf), "lo_user+%u", lang - DW_LANG_lo_user);
      return buf;
    }

  return "???";
}


static const char *
dwarf_inline_string (unsigned int code)
{
  static const char *known[] =
    {
      [DW_INL_not_inlined] = "not_inlined",
      [DW_INL_inlined] = "inlined",
      [DW_INL_declared_not_inlined] = "declared_not_inlined",
      [DW_INL_declared_inlined] = "declared_inlined"
    };

  if (code < sizeof (known) / sizeof (known[0]))
    return known[code];

  return "???";
}


static const char *
dwarf_encoding_string (unsigned int code)
{
  static const char *known[] =
    {
      [DW_ATE_void] = "void",
      [DW_ATE_address] = "address",
      [DW_ATE_boolean] = "boolean",
      [DW_ATE_complex_float] = "complex_float",
      [DW_ATE_float] = "float",
      [DW_ATE_signed] = "signed",
      [DW_ATE_signed_char] = "signed_char",
      [DW_ATE_unsigned] = "unsigned",
      [DW_ATE_unsigned_char] = "unsigned_char",
      [DW_ATE_imaginary_float] = "imaginary_float"
    };

  if (code < sizeof (known) / sizeof (known[0]))
    return known[code];

  if (code >= DW_ATE_lo_user && code <= DW_ATE_hi_user)
    {
      static char buf[30];
      snprintf (buf, sizeof (buf), "lo_user+%u", code - DW_ATE_lo_user);
      return buf;
    }

  return "???";
}


static const char *
dwarf_access_string (unsigned int code)
{
  static const char *known[] =
    {
      [DW_ACCESS_public] = "public",
      [DW_ACCESS_protected] = "protected",
      [DW_ACCESS_private] = "private"
    };

  if (code < sizeof (known) / sizeof (known[0]))
    return known[code];

  return "???";
}


static const char *
dwarf_visibility_string (unsigned int code)
{
  static const char *known[] =
    {
      [DW_VIS_local] = "local",
      [DW_VIS_exported] = "exported",
      [DW_VIS_qualified] = "qualified"
    };

  if (code < sizeof (known) / sizeof (known[0]))
    return known[code];

  return "???";
}


static const char *
dwarf_virtuality_string (unsigned int code)
{
  static const char *known[] =
    {
      [DW_VIRTUALITY_none] = "none",
      [DW_VIRTUALITY_virtual] = "virtual",
      [DW_VIRTUALITY_pure_virtual] = "pure_virtual"
    };

  if (code < sizeof (known) / sizeof (known[0]))
    return known[code];

  return "???";
}


static const char *
dwarf_identifier_case_string (unsigned int code)
{
  static const char *known[] =
    {
      [DW_ID_case_sensitive] = "sensitive",
      [DW_ID_up_case] = "up_case",
      [DW_ID_down_case] = "down_case",
      [DW_ID_case_insensitive] = "insensitive"
    };

  if (code < sizeof (known) / sizeof (known[0]))
    return known[code];

  return "???";
}


static const char *
dwarf_calling_convention_string (unsigned int code)
{
  static const char *known[] =
    {
      [DW_CC_normal] = "normal",
      [DW_CC_program] = "program",
      [DW_CC_nocall] = "nocall",
    };

  if (code < sizeof (known) / sizeof (known[0]))
    return known[code];

  if (code >= DW_CC_lo_user && code <= DW_CC_hi_user)
    {
      static char buf[30];
      snprintf (buf, sizeof (buf), "lo_user+%u", code - DW_CC_lo_user);
      return buf;
    }

  return "???";
}


static const char *
dwarf_ordering_string (unsigned int code)
{
  static const char *known[] =
    {
      [DW_ORD_row_major] = "row_major",
      [DW_ORD_col_major] = "col_major"
    };

  if (code < sizeof (known) / sizeof (known[0]))
    return known[code];

  return "???";
}


static const char *
dwarf_discr_list_string (unsigned int code)
{
  static const char *known[] =
    {
      [DW_DSC_label] = "label",
      [DW_DSC_range] = "range"
    };

  if (code < sizeof (known) / sizeof (known[0]))
    return known[code];

  return "???";
}


static void
print_ops (Dwarf *dbg, int indent, int indentrest,
	   unsigned int addrsize, Dwarf_Word len, const unsigned char *data)
{
  static const char *known[] =
    {
      [DW_OP_addr] = "addr",
      [DW_OP_deref] = "deref",
      [DW_OP_const1u] = "const1u",
      [DW_OP_const1s] = "const1s",
      [DW_OP_const2u] = "const2u",
      [DW_OP_const2s] = "const2s",
      [DW_OP_const4u] = "const4u",
      [DW_OP_const4s] = "const4s",
      [DW_OP_const8u] = "const8u",
      [DW_OP_const8s] = "const8s",
      [DW_OP_constu] = "constu",
      [DW_OP_consts] = "consts",
      [DW_OP_dup] = "dup",
      [DW_OP_drop] = "drop",
      [DW_OP_over] = "over",
      [DW_OP_pick] = "pick",
      [DW_OP_swap] = "swap",
      [DW_OP_rot] = "rot",
      [DW_OP_xderef] = "xderef",
      [DW_OP_abs] = "abs",
      [DW_OP_and] = "and",
      [DW_OP_div] = "div",
      [DW_OP_minus] = "minus",
      [DW_OP_mod] = "mod",
      [DW_OP_mul] = "mul",
      [DW_OP_neg] = "neg",
      [DW_OP_not] = "not",
      [DW_OP_or] = "or",
      [DW_OP_plus] = "plus",
      [DW_OP_plus_uconst] = "plus_uconst",
      [DW_OP_shl] = "shl",
      [DW_OP_shr] = "shr",
      [DW_OP_shra] = "shra",
      [DW_OP_xor] = "xor",
      [DW_OP_bra] = "bra",
      [DW_OP_eq] = "eq",
      [DW_OP_ge] = "ge",
      [DW_OP_gt] = "gt",
      [DW_OP_le] = "le",
      [DW_OP_lt] = "lt",
      [DW_OP_ne] = "ne",
      [DW_OP_skip] = "skip",
      [DW_OP_lit0] = "lit0",
      [DW_OP_lit1] = "lit1",
      [DW_OP_lit2] = "lit2",
      [DW_OP_lit3] = "lit3",
      [DW_OP_lit4] = "lit4",
      [DW_OP_lit5] = "lit5",
      [DW_OP_lit6] = "lit6",
      [DW_OP_lit7] = "lit7",
      [DW_OP_lit8] = "lit8",
      [DW_OP_lit9] = "lit9",
      [DW_OP_lit10] = "lit10",
      [DW_OP_lit11] = "lit11",
      [DW_OP_lit12] = "lit12",
      [DW_OP_lit13] = "lit13",
      [DW_OP_lit14] = "lit14",
      [DW_OP_lit15] = "lit15",
      [DW_OP_lit16] = "lit16",
      [DW_OP_lit17] = "lit17",
      [DW_OP_lit18] = "lit18",
      [DW_OP_lit19] = "lit19",
      [DW_OP_lit20] = "lit20",
      [DW_OP_lit21] = "lit21",
      [DW_OP_lit22] = "lit22",
      [DW_OP_lit23] = "lit23",
      [DW_OP_lit24] = "lit24",
      [DW_OP_lit25] = "lit25",
      [DW_OP_lit26] = "lit26",
      [DW_OP_lit27] = "lit27",
      [DW_OP_lit28] = "lit28",
      [DW_OP_lit29] = "lit29",
      [DW_OP_lit30] = "lit30",
      [DW_OP_lit31] = "lit31",
      [DW_OP_reg0] = "reg0",
      [DW_OP_reg1] = "reg1",
      [DW_OP_reg2] = "reg2",
      [DW_OP_reg3] = "reg3",
      [DW_OP_reg4] = "reg4",
      [DW_OP_reg5] = "reg5",
      [DW_OP_reg6] = "reg6",
      [DW_OP_reg7] = "reg7",
      [DW_OP_reg8] = "reg8",
      [DW_OP_reg9] = "reg9",
      [DW_OP_reg10] = "reg10",
      [DW_OP_reg11] = "reg11",
      [DW_OP_reg12] = "reg12",
      [DW_OP_reg13] = "reg13",
      [DW_OP_reg14] = "reg14",
      [DW_OP_reg15] = "reg15",
      [DW_OP_reg16] = "reg16",
      [DW_OP_reg17] = "reg17",
      [DW_OP_reg18] = "reg18",
      [DW_OP_reg19] = "reg19",
      [DW_OP_reg20] = "reg20",
      [DW_OP_reg21] = "reg21",
      [DW_OP_reg22] = "reg22",
      [DW_OP_reg23] = "reg23",
      [DW_OP_reg24] = "reg24",
      [DW_OP_reg25] = "reg25",
      [DW_OP_reg26] = "reg26",
      [DW_OP_reg27] = "reg27",
      [DW_OP_reg28] = "reg28",
      [DW_OP_reg29] = "reg29",
      [DW_OP_reg30] = "reg30",
      [DW_OP_reg31] = "reg31",
      [DW_OP_breg0] = "breg0",
      [DW_OP_breg1] = "breg1",
      [DW_OP_breg2] = "breg2",
      [DW_OP_breg3] = "breg3",
      [DW_OP_breg4] = "breg4",
      [DW_OP_breg5] = "breg5",
      [DW_OP_breg6] = "breg6",
      [DW_OP_breg7] = "breg7",
      [DW_OP_breg8] = "breg8",
      [DW_OP_breg9] = "breg9",
      [DW_OP_breg10] = "breg10",
      [DW_OP_breg11] = "breg11",
      [DW_OP_breg12] = "breg12",
      [DW_OP_breg13] = "breg13",
      [DW_OP_breg14] = "breg14",
      [DW_OP_breg15] = "breg15",
      [DW_OP_breg16] = "breg16",
      [DW_OP_breg17] = "breg17",
      [DW_OP_breg18] = "breg18",
      [DW_OP_breg19] = "breg19",
      [DW_OP_breg20] = "breg20",
      [DW_OP_breg21] = "breg21",
      [DW_OP_breg22] = "breg22",
      [DW_OP_breg23] = "breg23",
      [DW_OP_breg24] = "breg24",
      [DW_OP_breg25] = "breg25",
      [DW_OP_breg26] = "breg26",
      [DW_OP_breg27] = "breg27",
      [DW_OP_breg28] = "breg28",
      [DW_OP_breg29] = "breg29",
      [DW_OP_breg30] = "breg30",
      [DW_OP_breg31] = "breg31",
      [DW_OP_regx] = "regx",
      [DW_OP_fbreg] = "fbreg",
      [DW_OP_bregx] = "bregx",
      [DW_OP_piece] = "piece",
      [DW_OP_deref_size] = "deref_size",
      [DW_OP_xderef_size] = "xderef_size",
      [DW_OP_nop] = "nop",
      [DW_OP_push_object_address] = "push_object_address",
      [DW_OP_call2] = "call2",
      [DW_OP_call4] = "call4",
      [DW_OP_call_ref] = "call_ref",
    };

  Dwarf_Word offset = 0;
  while (len-- > 0)
    {
      size_t op = *data++;

      switch (op)
	{
	case DW_OP_call_ref:
	case DW_OP_addr:;
	  /* Address operand.  */
	  Dwarf_Word addr;
	  if (addrsize == 4)
	    addr = read_4ubyte_unaligned (dbg, data);
	  else
	    {
	      assert (addrsize == 8);
	      addr = read_8ubyte_unaligned (dbg, data);
	    }
	  data += addrsize;
	  len -= addrsize;

	  printf ("%*s[%4" PRIuMAX "] %s %" PRIuMAX "\n",
		  indent, "", (uintmax_t) offset,
		  known[op] ?: "???", (uintmax_t) addr);
	  offset += 1 + addrsize;
	  break;

	case DW_OP_deref_size:		/* XXX Correct?  */
	case DW_OP_xderef_size:		/* XXX Correct?  */
	case DW_OP_pick:
	case DW_OP_const1u:
	  printf ("%*s[%4" PRIuMAX "] %s %" PRIu8 "\n",
		  indent, "", (uintmax_t) offset,
		  known[op] ?: "???", *((uint8_t *) data));
	  ++data;
	  --len;
	  offset += 2;
	  break;

	case DW_OP_const2u:
	  printf ("%*s[%4" PRIuMAX "] %s %" PRIu16 "\n",
		  indent, "", (uintmax_t) offset,
		  known[op] ?: "???", read_2ubyte_unaligned (dbg, data));
	  len -= 2;
	  data += 2;
	  offset += 3;
	  break;

	case DW_OP_const4u:
	  printf ("%*s[%4" PRIuMAX "] %s %" PRIu32 "\n",
		  indent, "", (uintmax_t) offset,
		  known[op] ?: "???", read_4ubyte_unaligned (dbg, data));
	  len -= 4;
	  data += 4;
	  offset += 5;
	  break;

	case DW_OP_const8u:
	  printf ("%*s[%4" PRIuMAX "] %s %" PRIu64 "\n",
		  indent, "", (uintmax_t) offset,
		  known[op] ?: "???", read_8ubyte_unaligned (dbg, data));
	  len -= 8;
	  data += 8;
	  offset += 9;
	  break;

	case DW_OP_const1s:
	  printf ("%*s[%4" PRIuMAX "] %s %" PRId8 "\n",
		  indent, "", (uintmax_t) offset,
		  known[op] ?: "???", *((int8_t *) data));
	  ++data;
	  --len;
	  offset += 2;
	  break;

	case DW_OP_const2s:
	  printf ("%*s[%4" PRIuMAX "] %s %" PRId16 "\n",
		  indent, "", (uintmax_t) offset,
		  known[op] ?: "???", read_2sbyte_unaligned (dbg, data));
	  len -= 2;
	  data += 2;
	  offset += 3;
	  break;

	case DW_OP_const4s:
	  printf ("%*s[%4" PRIuMAX "] %s %" PRId32 "\n",
		  indent, "", (uintmax_t) offset,
		  known[op] ?: "???", read_4sbyte_unaligned (dbg, data));
	  len -= 4;
	  data += 4;
	  offset += 5;
	  break;

	case DW_OP_const8s:
	  printf ("%*s[%4" PRIuMAX "] %s %" PRId64 "\n",
		  indent, "", (uintmax_t) offset,
		  known[op] ?: "???", read_8sbyte_unaligned (dbg, data));
	  len -= 8;
	  data += 8;
	  offset += 9;
	  break;

	case DW_OP_piece:		/* XXX Correct?  */
	case DW_OP_regx:
	case DW_OP_plus_uconst:
	case DW_OP_constu:;
	  const unsigned char *start = data;
	  unsigned int uleb;
	  get_uleb128 (uleb, data);
	  printf ("%*s[%4" PRIuMAX "] %s %u\n",
		  indent, "", (uintmax_t) offset,
		  known[op] ?: "???", uleb);
	  len -= data - start;
	  offset += 1 + (data - start);
	  break;

	case DW_OP_fbreg:
	case DW_OP_breg0 ... DW_OP_breg31:
	case DW_OP_consts:
	  start = data;
	  unsigned int sleb;
	  get_sleb128 (sleb, data);
	  printf ("%*s[%4" PRIuMAX "] %s %d\n",
		  indent, "", (uintmax_t) offset,
		  known[op] ?: "???", sleb);
	  len -= data - start;
	  offset += 1 + (data - start);
	  break;

	case DW_OP_bregx:
	  start = data;
	  get_uleb128 (uleb, data);
	  get_sleb128 (sleb, data);
	  printf ("%*s[%4" PRIuMAX "] %s %u %d\n",
		  indent, "", (uintmax_t) offset,
		  known[op] ?: "???", uleb, sleb);
	  len -= data - start;
	  offset += 1 + (data - start);
	  break;

	case DW_OP_call2:
	case DW_OP_call4:
	case DW_OP_skip:
	case DW_OP_bra:
	  printf ("%*s[%4" PRIuMAX "] %s %" PRIuMAX "\n",
		  indent, "", (uintmax_t) offset,
		  known[op] ?: "???",
		  (uintmax_t) (offset + read_2sbyte_unaligned (dbg, data)));
	  len -= 2;
	  data += 2;
	  offset += 3;
	  break;

	default:
	  /* No Operand.  */
	  printf ("%*s[%4" PRIuMAX "] %s\n",
		  indent, "", (uintmax_t) offset,
		  known[op] ?: "???");
	  ++offset;
	  break;
	}

      indent = indentrest;
    }
}


static void
print_debug_abbrev_section (Ebl *ebl __attribute__ ((unused)),
			    GElf_Ehdr *ehdr __attribute__ ((unused)),
			    Elf_Scn *scn __attribute__ ((unused)),
			    GElf_Shdr *shdr, Dwarf *dbg)
{
  printf (gettext ("\nDWARF section '%s' at offset %#" PRIx64 ":\n"
		   " [ Code]\n"),
	  ".debug_abbrev", (uint64_t) shdr->sh_offset);

  Dwarf_Off offset = 0;
  while (offset < shdr->sh_size)
    {
      printf (gettext ("\nAbbreviation section at offset %" PRIu64 ":\n"),
	      offset);

      while (1)
	{
	  size_t length;
	  Dwarf_Abbrev abbrev;

	  int res = dwarf_offabbrev (dbg, offset, &length, &abbrev);
	  if (res != 0)
	    {
	      if (res < 0)
		{
		  printf (gettext ("\
 *** error while reading abbreviation: %s\n"),
			  dwarf_errmsg (-1));
		  return;
		}

	      /* This is the NUL byte at the end of the section.  */
	      ++offset;
	      break;
	    }

	  /* We know these calls can never fail.  */
	  unsigned int code = dwarf_getabbrevcode (&abbrev);
	  unsigned int tag = dwarf_getabbrevtag (&abbrev);
	  int has_children = dwarf_abbrevhaschildren (&abbrev);

	  printf (gettext (" [%5u] offset: %" PRId64
			   ", children: %s, tag: %s\n"),
		  code, (int64_t) offset,
		  has_children ? gettext ("yes") : gettext ("no"),
		  dwarf_tag_string (tag));

	  size_t cnt = 0;
	  unsigned int name;
	  unsigned int form;
	  Dwarf_Off enoffset;
	  while (dwarf_getabbrevattr (&abbrev, cnt,
				      &name, &form, &enoffset) == 0)
	    {
	      printf ("          attr: %s, form: %s, offset: %#" PRIx64 "\n",
		      dwarf_attr_string (name), dwarf_form_string (form),
		      (uint64_t) enoffset);

	      ++cnt;
	    }

	  offset += length;
	}
    }
}


/* Print content of DWARF .debug_aranges section.  We fortunately do
   not have to know a bit about the structure of the section, libdwarf
   takes care of it.  */
static void
print_debug_aranges_section (Ebl *ebl __attribute__ ((unused)),
			     GElf_Ehdr *ehdr __attribute__ ((unused)),
			     Elf_Scn *scn __attribute__ ((unused)),
			     GElf_Shdr *shdr, Dwarf *dbg)
{
  Dwarf_Aranges *aranges;
  size_t cnt;
  if (dwarf_getaranges (dbg, &aranges, &cnt) != 0)
    {
      error (0, 0, gettext ("cannot get .debug_aranges content: %s"),
	     dwarf_errmsg (-1));
      return;
    }

  printf (ngettext ("\
\nDWARF section '%s' at offset %#" PRIx64 " contains %zu entry:\n",
		    "\
\nDWARF section '%s' at offset %#" PRIx64 " contains %zu entries:\n",
		    cnt),
	  ".debug_aranges", (uint64_t) shdr->sh_offset, cnt);

  /* Compute floor(log16(cnt)).  */
  size_t tmp = cnt;
  int digits = 1;
  while (tmp >= 16)
    {
      ++digits;
      tmp >>= 4;
    }

  for (size_t n = 0; n < cnt; ++n)
    {
      Dwarf_Arange *runp = dwarf_onearange (aranges, n);
      if (runp == NULL)
	{
	  printf ("cannot get arange %zu: %s\n", n, dwarf_errmsg (-1));
	  return;
	}

      Dwarf_Addr start;
      Dwarf_Word length;
      Dwarf_Off offset;

      if (dwarf_getarangeinfo (runp, &start, &length, &offset) != 0)
	printf (gettext (" [%*zu] ???\n"), digits, n);
      else
	printf (gettext (" [%*zu] start: %0#*" PRIx64
			 ", length: %5" PRIu64 ", CU DIE offset: %6"
			 PRId64 "\n"),
		digits, n, ehdr->e_ident[EI_CLASS] == ELFCLASS32 ? 10 : 18,
		(uint64_t) start, (uint64_t) length, (int64_t) offset);
    }
}

/* Print content of DWARF .debug_ranges section.  */
static void
print_debug_ranges_section (Ebl *ebl __attribute__ ((unused)),
			    GElf_Ehdr *ehdr, Elf_Scn *scn, GElf_Shdr *shdr,
			    Dwarf *dbg)
{
  Elf_Data *data = elf_rawdata (scn, NULL);

  if (data == NULL)
    {
      error (0, 0, gettext ("cannot get .debug_ranges content: %s"),
	     elf_errmsg (-1));
      return;
    }

  printf (gettext ("\
\nDWARF section '%s' at offset %#" PRIx64 ":\n"),
	  ".debug_ranges", (uint64_t) shdr->sh_offset);

  size_t address_size = ehdr->e_ident[EI_CLASS] == ELFCLASS32 ? 4 : 8;

  bool first = true;
  unsigned char *readp = data->d_buf;
  while (readp < (unsigned char *) data->d_buf + data->d_size)
    {
      ptrdiff_t offset = readp - (unsigned char *) data->d_buf;

      if (data->d_size - offset < address_size * 2)
	{
	  printf (" [%6tx]  <INVALID DATA>\n", offset);
	  break;
	}

      Dwarf_Addr begin;
      Dwarf_Addr end;
      if (address_size == 8)
	{
	  begin = read_8ubyte_unaligned_inc (dbg, readp);
	  end = read_8ubyte_unaligned_inc (dbg, readp);
	}
      else
	{
	  begin = read_4ubyte_unaligned_inc (dbg, readp);
	  end = read_4ubyte_unaligned_inc (dbg, readp);
	  if (begin == (Dwarf_Addr) (uint32_t) -1)
	    begin = (Dwarf_Addr) -1l;
	}

      if (begin == (Dwarf_Addr) -1l) /* Base address entry.  */
	printf (" [%6tx]  base address %#0*" PRIxMAX "\n", offset,
		2 + (int) (address_size * 2), (uintmax_t) end);
      else if (begin == 0 && end == 0) /* End of list entry.  */
	first = true;
      else
	{
	  /* We have an address range entry.  */
	  if (first)		/* First address range entry in a list.  */
	    printf (" [%6tx]  %#0*" PRIxMAX "..%#0*" PRIxMAX "\n", offset,
		    2 + (int) (address_size * 2), (uintmax_t) begin,
		    2 + (int) (address_size * 2), (uintmax_t) end);
	  else
	    printf ("           %#0*" PRIxMAX "..%#0*" PRIxMAX "\n",
		    2 + (int) (address_size * 2), (uintmax_t) begin,
		    2 + (int) (address_size * 2), (uintmax_t) end);

	  first = false;
	}
    }
}


static void
print_debug_frame_section (Ebl *ebl __attribute__ ((unused)),
			   GElf_Ehdr *ehdr __attribute__ ((unused)),
			   Elf_Scn *scn __attribute__ ((unused)),
			   GElf_Shdr *shdr __attribute__ ((unused)),
			   Dwarf *dbg __attribute__ ((unused)))
{
}


struct attrcb_args
{
  Dwarf *dbg;
  int level;
  unsigned int addrsize;
  Dwarf_Off cu_offset;
};


static int
attr_callback (Dwarf_Attribute *attrp, void *arg)
{
  struct attrcb_args *cbargs = (struct attrcb_args *) arg;
  const int level = cbargs->level;

  unsigned int attr = dwarf_whatattr (attrp);
  if (unlikely (attr == 0))
    {
      error (0, 0, gettext ("cannot get attribute code: %s"),
	     dwarf_errmsg (-1));
      return DWARF_CB_ABORT;
    }

  unsigned int form = dwarf_whatform (attrp);
  if (unlikely (form == 0))
    {
      error (0, 0, gettext ("cannot get attribute form: %s"),
	     dwarf_errmsg (-1));
      return DWARF_CB_ABORT;
    }

  switch (form)
    {
    case DW_FORM_addr:;
      Dwarf_Addr addr;
      if (unlikely (dwarf_formaddr (attrp, &addr) != 0))
	{
	attrval_out:
	  error (0, 0, gettext ("cannot get attribute value: %s"),
		 dwarf_errmsg (-1));
	  return DWARF_CB_ABORT;
	}
      printf ("           %*s%-20s %#0*" PRIxMAX "\n",
	      (int) (level * 2), "", dwarf_attr_string (attr),
	      2 + (int) (cbargs->addrsize * 2), (uintmax_t) addr);
      break;

    case DW_FORM_indirect:
    case DW_FORM_strp:
    case DW_FORM_string:;
      const char *str = dwarf_formstring (attrp);
      if (unlikely (str == NULL))
	goto attrval_out;
      printf ("           %*s%-20s \"%s\"\n",
	      (int) (level * 2), "", dwarf_attr_string (attr), str);
      break;

    case DW_FORM_ref_addr:
    case DW_FORM_ref_udata:
    case DW_FORM_ref8:
    case DW_FORM_ref4:
    case DW_FORM_ref2:
    case DW_FORM_ref1:;
      Dwarf_Off ref;
      if (unlikely (dwarf_formref (attrp, &ref) != 0))
	goto attrval_out;

      printf ("           %*s%-20s [%6" PRIxMAX "]\n",
	      (int) (level * 2), "", dwarf_attr_string (attr),
	      (uintmax_t) (ref + cbargs->cu_offset));
      break;

    case DW_FORM_udata:
    case DW_FORM_sdata:
    case DW_FORM_data8:
    case DW_FORM_data4:
    case DW_FORM_data2:
    case DW_FORM_data1:;
      Dwarf_Word num;
      if (unlikely (dwarf_formudata (attrp, &num) != 0))
	goto attrval_out;

      const char *valuestr = NULL;
      switch (attr)
	{
	case DW_AT_location:
	case DW_AT_data_member_location:
	case DW_AT_vtable_elem_location:
	case DW_AT_string_length:
	case DW_AT_use_location:
	case DW_AT_frame_base:
	case DW_AT_return_addr:
	case DW_AT_static_link:
	  printf ("           %*s%-20s location list [%6" PRIxMAX "]\n",
		  (int) (level * 2), "", dwarf_attr_string (attr),
		  (uintmax_t) num);
	  return DWARF_CB_OK;

	case DW_AT_ranges:
	  printf ("           %*s%-20s range list [%6" PRIxMAX "]\n",
		  (int) (level * 2), "", dwarf_attr_string (attr),
		  (uintmax_t) num);
	  return DWARF_CB_OK;

	case DW_AT_language:
	  valuestr = dwarf_lang_string (num);
	  break;
	case DW_AT_encoding:
	  valuestr = dwarf_encoding_string (num);
	  break;
	case DW_AT_accessibility:
	  valuestr = dwarf_access_string (num);
	  break;
	case DW_AT_visibility:
	  valuestr = dwarf_visibility_string (num);
	  break;
	case DW_AT_virtuality:
	  valuestr = dwarf_virtuality_string (num);
	  break;
	case DW_AT_identifier_case:
	  valuestr = dwarf_identifier_case_string (num);
	  break;
	case DW_AT_calling_convention:
	  valuestr = dwarf_calling_convention_string (num);
	  break;
	case DW_AT_inline:
	  valuestr = dwarf_inline_string (num);
	  break;
	case DW_AT_ordering:
	  valuestr = dwarf_ordering_string (num);
	  break;
	case DW_AT_discr_list:
	  valuestr = dwarf_discr_list_string (num);
	  break;
	default:
	  /* Nothing.  */
	  break;
	}

      if (valuestr == NULL)
	printf ("           %*s%-20s %" PRIuMAX "\n",
		(int) (level * 2), "", dwarf_attr_string (attr),
		(uintmax_t) num);
      else
	printf ("           %*s%-20s %s (%" PRIuMAX ")\n",
		(int) (level * 2), "", dwarf_attr_string (attr),
		valuestr, (uintmax_t) num);
      break;

    case DW_FORM_flag:;
      bool flag;
      if (unlikely (dwarf_formflag (attrp, &flag) != 0))
	goto attrval_out;

      printf ("           %*s%-20s %s\n",
	      (int) (level * 2), "", dwarf_attr_string (attr),
	      nl_langinfo (flag ? YESSTR : NOSTR));
      break;

    case DW_FORM_block4:
    case DW_FORM_block2:
    case DW_FORM_block1:
    case DW_FORM_block:;
      Dwarf_Block block;
      if (unlikely (dwarf_formblock (attrp, &block) != 0))
	goto attrval_out;

      printf ("           %*s%-20s %" PRIxMAX " byte block\n",
	      (int) (level * 2), "", dwarf_attr_string (attr),
	      (uintmax_t) block.length);

      switch (attr)
	{
	case DW_AT_location:
	case DW_AT_data_member_location:
	case DW_AT_vtable_elem_location:
	case DW_AT_string_length:
	case DW_AT_use_location:
	case DW_AT_frame_base:
	case DW_AT_return_addr:
	case DW_AT_static_link:
	  print_ops (cbargs->dbg, 12 + level * 2, 12 + level * 2,
		     cbargs->addrsize, block.length, block.data);
	  break;
	}
      break;

    default:
      printf ("           %*s%-20s [form: %d] ???\n",
	      (int) (level * 2), "", dwarf_attr_string (attr),
	      (int) form);
      break;
    }

  return DWARF_CB_OK;
}


static void
print_debug_info_section (Ebl *ebl __attribute__ ((unused)),
			  GElf_Ehdr *ehdr __attribute__ ((unused)),
			  Elf_Scn *scn __attribute__ ((unused)),
			  GElf_Shdr *shdr, Dwarf *dbg)
{
  printf (gettext ("\
\nDWARF section '%s' at offset %#" PRIx64 ":\n [Offset]\n"),
	  ".debug_info", (uint64_t) shdr->sh_offset);

  /* If the section is empty we don't have to do anything.  */
  if (shdr->sh_size == 0)
    return;

  int maxdies = 20;
  Dwarf_Die *dies = (Dwarf_Die *) xmalloc (maxdies * sizeof (Dwarf_Die));

  Dwarf_Off offset = 0;

  /* New compilation unit.  */
  size_t cuhl;
  //Dwarf_Half version;
  Dwarf_Off abbroffset;
  uint8_t addrsize;
  uint8_t offsize;
  Dwarf_Off nextcu;
 next_cu:
  if (dwarf_nextcu (dbg, offset, &nextcu, &cuhl, &abbroffset, &addrsize,
		    &offsize) != 0)
    goto do_return;

  printf (gettext (" Compilation unit at offset %" PRIu64 ":\n"
		   " Version: %" PRIu16 ", Abbreviation section offset: %"
		   PRIu64 ", Address size: %" PRIu8 ", Offset size: %" PRIu8 "\n"),
	  (uint64_t) offset, /*version*/2, abbroffset, addrsize, offsize);


  struct attrcb_args args;
  args.dbg = dbg;
  args.addrsize = addrsize;
  args.cu_offset = offset;

  offset += cuhl;

  int level = 0;

  if (unlikely (dwarf_offdie (dbg, offset, &dies[level]) == NULL))
    {
      error (0, 0, gettext ("cannot get DIE at offset %" PRIu64
			    " in section '%s': %s"),
	     (uint64_t) offset, ".debug_info", dwarf_errmsg (-1));
      goto do_return;
    }

  do
    {
      offset = dwarf_dieoffset (&dies[level]);
      if (offset == ~0ul)
	{
	  error (0, 0, gettext ("cannot get DIE offset: %s"),
		 dwarf_errmsg (-1));
	  goto do_return;
	}

      int tag = dwarf_tag (&dies[level]);
      if (tag == DW_TAG_invalid)
	{
	  error (0, 0, gettext ("cannot get tag of DIE at offset %" PRIu64
				" in section '%s': %s"),
		 (uint64_t) offset, ".debug_info", dwarf_errmsg (-1));
	  goto do_return;
	}

#if 1
      const char *tagstr = dwarf_tag_string (tag);
#else
      static const char *const lowtags[] =
	{
	  [DW_TAG_array_type] = "array_type",
	  [DW_TAG_class_type] = "class_type",
	  [DW_TAG_entry_point] = "entry_point",
	  [DW_TAG_enumeration_type] = "enumeration_type",
	  [DW_TAG_formal_parameter] = "formal_parameter",
	  [DW_TAG_imported_declaration] = "imported_declaration",
	  [DW_TAG_label] = "label",
	  [DW_TAG_lexical_block] = "lexical_block",
	  [DW_TAG_member] = "member",
	  [DW_TAG_pointer_type] = "pointer_type",
	  [DW_TAG_reference_type] = "reference_type",
	  [DW_TAG_compile_unit] = "compile_unit",
	  [DW_TAG_string_type] = "string_type",
	  [DW_TAG_structure_type] = "structure_type",
	  [DW_TAG_subroutine_type] = "subroutine_type",
	  [DW_TAG_typedef] = "typedef",
	  [DW_TAG_union_type] = "union_type",
	  [DW_TAG_unspecified_parameters] = "unspecified_parameters",
	  [DW_TAG_variant] = "variant",
	  [DW_TAG_common_block] = "common_block",
	  [DW_TAG_common_inclusion] = "common_inclusion",
	  [DW_TAG_inheritance] = "inheritance",
	  [DW_TAG_inlined_subroutine] = "inlined_subroutine",
	  [DW_TAG_module] = "module",
	  [DW_TAG_ptr_to_member_type] = "ptr_to_member_type",
	  [DW_TAG_set_type] = "set_type",
	  [DW_TAG_subrange_type] = "subrange_type",
	  [DW_TAG_with_stmt] = "with_stmt",
	  [DW_TAG_access_declaration] = "access_declaration",
	  [DW_TAG_base_type] = "base_type",
	  [DW_TAG_catch_block] = "catch_block",
	  [DW_TAG_const_type] = "const_type",
	  [DW_TAG_constant] = "constant",
	  [DW_TAG_enumerator] = "enumerator",
	  [DW_TAG_file_type] = "file_type",
	  [DW_TAG_friend] = "friend",
	  [DW_TAG_namelist] = "namelist",
	  [DW_TAG_namelist_item] = "namelist_item",
	  [DW_TAG_packed_type] = "packed_type",
	  [DW_TAG_subprogram] = "subprogram",
	  [DW_TAG_template_type_param] = "template_type_param",
	  [DW_TAG_template_value_param] = "template_value_param",
	  [DW_TAG_thrown_type] = "thrown_type",
	  [DW_TAG_try_block] = "try_block",
	  [DW_TAG_variant_part] = "variant_part",
	  [DW_TAG_variable] = "variable",
	  [DW_TAG_volatile_type] = "volatile_type"
	};

      const char *tagstr;
      switch (tag)
	{
	case DW_TAG_lo_user:
	  tagstr = "lo_user";
	  break;

	case DW_TAG_MIPS_loop:
	  tagstr = "MIPS_loop";
	  break;

	case DW_TAG_format_label:
	  tagstr = "format_label";
	  break;

	case DW_TAG_function_template:
	  tagstr = "function_template";
	  break;

	case DW_TAG_class_template:
	  tagstr = "class_template";
	  break;
	case DW_TAG_hi_user:
	  tagstr = "hi_user";
	  break;

	default:
	  if (tag < (int) (sizeof (lowtags) / sizeof (lowtags[0])))
	    tagstr = lowtags[tag];
	  else
	    tagstr = "???";
	  break;
	}
#endif

      printf (" [%6" PRIx64 "]  %*s%s\n",
	      (uint64_t) offset, (int) (level * 2), "", tagstr);

      /* Print the attribute values.  */
      args.level = level;
      (void) dwarf_getattrs (&dies[level], attr_callback, &args, 0);

      /* Make room for the next level's DIE.  */
      if (level + 1 == maxdies)
	dies = (Dwarf_Die *) xrealloc (dies,
				       (maxdies += 10)
				       * sizeof (Dwarf_Die));

      int res = dwarf_child (&dies[level], &dies[level + 1]);
      if (res > 0)
	{
	  while ((res = dwarf_siblingof (&dies[level], &dies[level])) == 1)
	    if (level-- == 0)
	      break;

	  if (res == -1)
	    {
	      error (0, 0, gettext ("cannot get next DIE: %s\n"),
		     dwarf_errmsg (-1));
	      goto do_return;
	    }
	}
      else if (unlikely (res < 0))
	{
	  error (0, 0, gettext ("cannot get next DIE: %s"),
		 dwarf_errmsg (-1));
	  goto do_return;
	}
      else
	++level;
    }
  while (level >= 0);

  offset = nextcu;
  if (offset != 0)
     goto next_cu;

 do_return:
  free (dies);
}


static void
print_debug_line_section (Ebl *ebl, GElf_Ehdr *ehdr __attribute__ ((unused)),
			  Elf_Scn *scn, GElf_Shdr *shdr, Dwarf *dbg)
{
  printf (gettext ("\
\nDWARF section '%s' at offset %#" PRIx64 ":\n"),
	  ".debug_line", (uint64_t) shdr->sh_offset);

  if (shdr->sh_size == 0)
    return;

  /* There is no functionality in libdw to read the information in the
     way it is represented here.  Hardcode the decoder.  */
  Elf_Data *data = elf_getdata (scn, NULL);
  if (data == NULL || data->d_buf == NULL)
    {
      error (0, 0, gettext ("cannot get line data section data: %s"),
	     elf_errmsg (-1));
      return;
    }

  const unsigned char *linep = (const unsigned char *) data->d_buf;
  const unsigned char *lineendp;

  while (linep
	 < (lineendp = (const unsigned char *) data->d_buf + data->d_size))
    {
      size_t start_offset = linep - (const unsigned char *) data->d_buf;

      printf (gettext ("\nTable at offset %Zu:\n"), start_offset);

      Dwarf_Word unit_length = read_4ubyte_unaligned_inc (dbg, linep);
      unsigned int length = 4;
      if (unlikely (unit_length == 0xffffffff))
	{
	  if (unlikely (linep + 8 > lineendp))
	    {
	    invalid_data:
	      error (0, 0, gettext ("invalid data in section [%zu] '%s'"),
		     elf_ndxscn (scn), ".debug_line");
	      return;
	    }
	  unit_length = read_8ubyte_unaligned_inc (dbg, linep);
	  length = 8;
	}

      /* Check whether we have enough room in the section.  */
      if (unit_length < 2 + length + 5 * 1
	  || unlikely (linep + unit_length > lineendp))
	goto invalid_data;
      lineendp = linep + unit_length;

      /* The next element of the header is the version identifier.  */
      uint_fast16_t version = read_2ubyte_unaligned_inc (dbg, linep);

      /* Next comes the header length.  */
      Dwarf_Word header_length;
      if (length == 4)
	header_length = read_4ubyte_unaligned_inc (dbg, linep);
      else
	header_length = read_8ubyte_unaligned_inc (dbg, linep);
      //const unsigned char *header_start = linep;

      /* Next the minimum instruction length.  */
      uint_fast8_t minimum_instr_len = *linep++;

        /* Then the flag determining the default value of the is_stmt
	   register.  */
      uint_fast8_t default_is_stmt = *linep++;

      /* Now the line base.  */
      int_fast8_t line_base = *((const int_fast8_t *) linep);
      ++linep;

      /* And the line range.  */
      uint_fast8_t line_range = *linep++;

      /* The opcode base.  */
      uint_fast8_t opcode_base = *linep++;

      /* Print what we got so far.  */
      printf (gettext ("\n"
		       " Length:                     %" PRIu64 "\n"
		       " DWARF version:              %" PRIuFAST16 "\n"
		       " Prologue length:            %" PRIu64 "\n"
		       " Minimum instruction length: %" PRIuFAST8 "\n"
		       " Initial value if '%s': %" PRIuFAST8 "\n"
		       " Line base:                  %" PRIdFAST8 "\n"
		       " Line range:                 %" PRIuFAST8 "\n"
		       " Opcode base:                %" PRIuFAST8 "\n"
		       "\n"
		       "Opcodes:\n"),
	      (uint64_t) unit_length, version, (uint64_t) header_length,
	      minimum_instr_len, "is_stmt", default_is_stmt, line_base,
	      line_range, opcode_base);

      if (unlikely (linep + opcode_base - 1 >= lineendp))
	goto invalid_data;
      int opcode_base_l10 = 1;
      unsigned int tmp = opcode_base;
      while (tmp > 10)
	{
	  tmp /= 10;
	  ++opcode_base_l10;
	}
      const uint8_t *standard_opcode_lengths = linep - 1;
      for (uint_fast8_t cnt = 1; cnt < opcode_base; ++cnt)
	printf (ngettext ("  [%*" PRIuFAST8 "]  %hhu argument\n",
			  "  [%*" PRIuFAST8 "]  %hhu arguments\n",
			  (int) linep[cnt - 1]),
		opcode_base_l10, cnt, linep[cnt - 1]);
      linep += opcode_base - 1;
      if (unlikely (linep >= lineendp))
	goto invalid_data;

      puts (gettext ("\nDirectory table:"));
      while (*linep != 0)
	{
	  unsigned char *endp = memchr (linep, '\0', lineendp - linep);
	  if (endp == NULL)
	    goto invalid_data;

	  printf (" %s\n", (char *) linep);

	  linep = endp + 1;
	}
      /* Skip the final NUL byte.  */
      ++linep;

      if (unlikely (linep >= lineendp))
	goto invalid_data;
      puts (gettext ("\nFile name table:\n"
		     " Entry Dir   Time      Size      Name"));
      for (unsigned int cnt = 1; *linep != 0; ++cnt)
	{
	  /* First comes the file name.  */
	  char *fname = (char *) linep;
	  unsigned char *endp = memchr (fname, '\0', lineendp - linep);
	  if (endp == NULL)
	    goto invalid_data;
	  linep = endp + 1;

	  /* Then the index.  */
	  unsigned int diridx;
	  get_uleb128 (diridx, linep);

	  /* Next comes the modification time.  */
	  unsigned int mtime;
	  get_uleb128 (mtime, linep);

	  /* Finally the length of the file.  */
	  unsigned int fsize;
	  get_uleb128 (fsize, linep);

	  printf (" %-5u %-5u %-9u %-9u %s\n",
		  cnt, diridx, mtime, fsize, fname);
	}
      /* Skip the final NUL byte.  */
      ++linep;

      puts (gettext ("\nLine number statements:"));
      Dwarf_Word address = 0;
      size_t line = 1;
      uint_fast8_t is_stmt = default_is_stmt;

      /* Default address value, in case we do not find the CU.  */
      size_t address_size
	= elf_getident (ebl->elf, NULL)[EI_CLASS] == ELFCLASS32 ? 4 : 8;

      /* Determine the CU this block is for.  */
      Dwarf_Off cuoffset;
      Dwarf_Off ncuoffset = 0;
      size_t hsize;
      while (dwarf_nextcu (dbg, cuoffset = ncuoffset, &ncuoffset, &hsize,
			   NULL, NULL, NULL) == 0)
	{
	  Dwarf_Die cudie;
	  if (dwarf_offdie (dbg, cuoffset + hsize, &cudie) == NULL)
	    continue;
	  Dwarf_Attribute stmt_list;
	  if (dwarf_attr (&cudie, DW_AT_stmt_list, &stmt_list) == NULL)
	    continue;
	  Dwarf_Word lineoff;
	  if (dwarf_formudata (&stmt_list, &lineoff) != 0)
	    continue;
	  if (lineoff == start_offset)
	    {
	      /* Found the CU.  */
	      address_size = cudie.cu->address_size;
	      break;
	    }
	}

      while (linep < lineendp)
	{
	  unsigned int u128;
	  int s128;

	  /* Read the opcode.  */
	  unsigned int opcode = *linep++;

	  /* Is this a special opcode?  */
	  if (likely (opcode >= opcode_base))
	    {
	      /* Yes.  Handling this is quite easy since the opcode value
		 is computed with

		 opcode = (desired line increment - line_base)
		           + (line_range * address advance) + opcode_base
	      */
	      int line_increment = (line_base
				    + (opcode - opcode_base) % line_range);
	      unsigned int address_increment = (minimum_instr_len
						* ((opcode - opcode_base)
						   / line_range));

	      /* Perform the increments.  */
	      line += line_increment;
	      address += address_increment;

	      printf (gettext ("\
 special opcode %u: address+%u = %#" PRIx64 ", line%+d = %zu\n"),
		      opcode, address_increment, (uint64_t) address,
		      line_increment, line);
	    }
	  else if (opcode == 0)
	    {
	      /* This an extended opcode.  */
	      if (unlikely (linep + 2 > lineendp))
		goto invalid_data;

	      /* The length.  */
	      unsigned int len = *linep++;

	      if (unlikely (linep + len > lineendp))
		goto invalid_data;

	      /* The sub-opcode.  */
	      opcode = *linep++;

	      printf (gettext (" extended opcode %u: "), opcode);

	      switch (opcode)
		{
		case DW_LNE_end_sequence:
		  puts (gettext ("end of sequence"));

		  /* Reset the registers we care about.  */
		  address = 0;
		  line = 1;
		  is_stmt = default_is_stmt;
		  break;

		case DW_LNE_set_address:
		  if (address_size == 4)
		    address = read_4ubyte_unaligned_inc (dbg, linep);
		  else
		    address = read_8ubyte_unaligned_inc (dbg, linep);
		  printf (gettext ("set address to %#" PRIx64 "\n"),
			  (uint64_t) address);
		  break;

		case DW_LNE_define_file:
		  {
		    char *fname = (char *) linep;
		    unsigned char *endp = memchr (linep, '\0',
						  lineendp - linep);
		    if (endp == NULL)
		      goto invalid_data;
		    linep = endp + 1;

		    unsigned int diridx;
		    get_uleb128 (diridx, linep);
		    Dwarf_Word mtime;
		    get_uleb128 (mtime, linep);
		    Dwarf_Word filelength;
		    get_uleb128 (filelength, linep);

		    printf (gettext ("\
define new file: dir=%u, mtime=%" PRIu64 ", length=%" PRIu64 ", name=%s\n"),
			    diridx, (uint64_t) mtime, (uint64_t) filelength,
			    fname);
		  }
		  break;

		default:
		  /* Unknown, ignore it.  */
		  puts (gettext ("unknown opcode"));
		  linep += len - 1;
		  break;
		}
	    }
	  else if (opcode <= DW_LNS_set_epilog_begin)
	    {
	      /* This is a known standard opcode.  */
	      switch (opcode)
		{
		case DW_LNS_copy:
		  /* Takes no argument.  */
		  puts (gettext (" copy"));
		  break;

		case DW_LNS_advance_pc:
		  /* Takes one uleb128 parameter which is added to the
		     address.  */
		  get_uleb128 (u128, linep);
		  address += minimum_instr_len * u128;
		  printf (gettext ("\
 advance address by %u to %#" PRIx64 "\n"),
			  u128, (uint64_t) address);
		  break;

		case DW_LNS_advance_line:
		  /* Takes one sleb128 parameter which is added to the
		     line.  */
		  get_sleb128 (s128, linep);
		  line += s128;
		  printf (gettext ("\
 advance line by constant %d to %" PRId64 "\n"),
			  s128, (int64_t) line);
		  break;

		case DW_LNS_set_file:
		  /* Takes one uleb128 parameter which is stored in file.  */
		  get_uleb128 (u128, linep);
		  printf (gettext (" set file to %" PRIu64 "\n"),
			  (uint64_t) u128);
		  break;

		case DW_LNS_set_column:
		  /* Takes one uleb128 parameter which is stored in column.  */
		  if (unlikely (standard_opcode_lengths[opcode] != 1))
		    goto invalid_data;

		  get_uleb128 (u128, linep);
		  printf (gettext (" set column to %" PRIu64 "\n"),
			  (uint64_t) u128);
		  break;

		case DW_LNS_negate_stmt:
		  /* Takes no argument.  */
		  is_stmt = 1 - is_stmt;
		  printf (gettext (" set '%s' to %" PRIuFAST8 "\n"),
			  "is_stmt", is_stmt);
		  break;

		case DW_LNS_set_basic_block:
		  /* Takes no argument.  */
		  puts (gettext (" set basic block flag"));
		  break;

		case DW_LNS_const_add_pc:
		  /* Takes no argument.  */
		  u128 = (minimum_instr_len
			  * ((255 - opcode_base) / line_range));
		  address += u128;
		  printf (gettext ("\
 advance address by constant %u to %#" PRIx64 "\n"),
			  u128, (uint64_t) address);
		  break;

		case DW_LNS_fixed_advance_pc:
		  /* Takes one 16 bit parameter which is added to the
		     address.  */
		  if (unlikely (standard_opcode_lengths[opcode] != 1))
		    goto invalid_data;

		  u128 = read_2ubyte_unaligned_inc (dbg, linep);
		  address += u128;
		  printf (gettext ("\
 advance address by fixed value %u to %#" PRIx64 "\n"),
			  u128, (uint64_t) address);
		  break;

		case DW_LNS_set_prologue_end:
		  /* Takes no argument.  */
		  puts (gettext (" set prologue end flag"));
		  break;

		case DW_LNS_set_epilog_begin:
		  /* Takes no argument.  */
		  puts (gettext (" set epilogue begin flag"));
		  break;
		}
	    }
	  else
	    {
	      /* This is a new opcode the generator but not we know about.
		 Read the parameters associated with it but then discard
		 everything.  Read all the parameters for this opcode.  */
	      printf (ngettext (" unknown opcode with %" PRIu8 " parameter:",
				" unknown opcode with %" PRIu8 " parameters:",
				standard_opcode_lengths[opcode]),
		      standard_opcode_lengths[opcode]);
	      for (int n = standard_opcode_lengths[opcode]; n > 0; --n)
		{
		  get_uleb128 (u128, linep);
		  if (n != standard_opcode_lengths[opcode])
		    putc_unlocked (',', stdout);
		  printf (" %u", u128);
		}

	      /* Next round, ignore this opcode.  */
	      continue;
	    }
	}
    }

  /* There must only be one data block.  */
  assert (elf_getdata (scn, data) == NULL);
}


static void
print_debug_loc_section (Ebl *ebl __attribute__ ((unused)),
			 GElf_Ehdr *ehdr __attribute__ ((unused)),
			 Elf_Scn *scn __attribute__ ((unused)),
			 GElf_Shdr *shdr,
			 Dwarf *dbg __attribute__ ((unused)))
{
  Elf_Data *data = elf_rawdata (scn, NULL);

  if (data == NULL)
    {
      error (0, 0, gettext ("cannot get .debug_loc content: %s"),
	     elf_errmsg (-1));
      return;
    }

  printf (gettext ("\
\nDWARF section '%s' at offset %#" PRIx64 ":\n"),
	  ".debug_loc", (uint64_t) shdr->sh_offset);

  size_t address_size = ehdr->e_ident[EI_CLASS] == ELFCLASS32 ? 4 : 8;

  bool first = true;
  unsigned char *readp = data->d_buf;
  while (readp < (unsigned char *) data->d_buf + data->d_size)
    {
      ptrdiff_t offset = readp - (unsigned char *) data->d_buf;

      if (data->d_size - offset < address_size * 2)
	{
	  printf (" [%6tx]  <INVALID DATA>\n", offset);
	  break;
	}

      Dwarf_Addr begin;
      Dwarf_Addr end;
      if (address_size == 8)
	{
	  begin = read_8ubyte_unaligned_inc (dbg, readp);
	  end = read_8ubyte_unaligned_inc (dbg, readp);
	}
      else
	{
	  begin = read_4ubyte_unaligned_inc (dbg, readp);
	  end = read_4ubyte_unaligned_inc (dbg, readp);
	  if (begin == (Dwarf_Addr) (uint32_t) -1)
	    begin = (Dwarf_Addr) -1l;
	}

      if (begin == (Dwarf_Addr) -1l) /* Base address entry.  */
	printf (" [%6tx]  base address %#0*" PRIxMAX "\n", offset,
		2 + (int) (address_size * 2), (uintmax_t) end);
      else if (begin == 0 && end == 0) /* End of list entry.  */
	first = true;
      else
	{
	  /* We have a location expression entry.  */
	  uint_fast16_t len = read_2ubyte_unaligned_inc (dbg, readp);

	  if (first)		/* First entry in a list.  */
	    printf (" [%6tx]  %#0*" PRIxMAX "..%#0*" PRIxMAX,
		    offset,
		    2 + (int) (address_size * 2), (uintmax_t) begin,
		    2 + (int) (address_size * 2), (uintmax_t) end);
	  else
	    printf ("           %#0*" PRIxMAX "..%#0*" PRIxMAX,
		    2 + (int) (address_size * 2), (uintmax_t) begin,
		    2 + (int) (address_size * 2), (uintmax_t) end);

	  print_ops (dbg, 1, 18 + (address_size * 4),
		     address_size, len, readp);

	  first = false;
	  readp += len;
	}
    }
}

struct mac_culist
{
  Dwarf_Die die;
  Dwarf_Off offset;
  Dwarf_Files *files;
  struct mac_culist *next;
};


static int
mac_compare (const void *p1, const void *p2)
{
  struct mac_culist *m1 = (struct mac_culist *) p1;
  struct mac_culist *m2 = (struct mac_culist *) p2;

  if (m1->offset < m2->offset)
    return -1;
  if (m1->offset > m2->offset)
    return 1;
  return 0;
}


static void
print_debug_macinfo_section (Ebl *ebl __attribute__ ((unused)),
			     GElf_Ehdr *ehdr __attribute__ ((unused)),
			     Elf_Scn *scn, GElf_Shdr *shdr, Dwarf *dbg)
{
  printf (gettext ("\
\nDWARF section '%s' at offset %#" PRIx64 ":\n"),
	  ".debug_macinfo", (uint64_t) shdr->sh_offset);
  putc_unlocked ('\n', stdout);

  /* There is no function in libdw to iterate over the raw content of
     the section but it is easy enough to do.  */
  Elf_Data *data = elf_getdata (scn, NULL);
  if (data == NULL || data->d_buf == NULL)
    {
      error (0, 0, gettext ("cannot get macro information section data: %s"),
	     elf_errmsg (-1));
      return;
    }

  /* Get the source file information for all CUs.  */
  Dwarf_Off offset;
  Dwarf_Off ncu = 0;
  size_t hsize;
  struct mac_culist *culist = NULL;
  size_t nculist = 0;
  while (dwarf_nextcu (dbg, offset = ncu, &ncu, &hsize, NULL, NULL, NULL) == 0)
    {
      Dwarf_Die cudie;
      if (dwarf_offdie (dbg, offset + hsize, &cudie) == NULL)
	continue;

      Dwarf_Attribute attr;
      if (dwarf_attr (&cudie, DW_AT_macro_info, &attr) == NULL)
	continue;

      Dwarf_Word macoff;
      if (dwarf_formudata (&attr, &macoff) != 0)
	continue;

      struct mac_culist *newp = (struct mac_culist *) alloca (sizeof (*newp));
      newp->die = cudie;
      newp->offset = macoff;
      newp->files = NULL;
      newp->next = culist;
      culist = newp;
      ++nculist;
    }

  /* Convert the list into an array for easier consumption.  */
  struct mac_culist *cus = (struct mac_culist *) alloca ((nculist + 1)
							 * sizeof (*cus));
  /* Add sentinel.  */
  cus[nculist].offset = data->d_size;
  if (nculist > 0)
    {
      for (size_t cnt = nculist - 1; culist != NULL; --cnt)
	{
	  assert (cnt < nculist);
	  cus[cnt] = *culist;
	  culist = culist->next;
	}

      /* Sort the array according to the offset in the .debug_macinfo
	 section.  Note we keep the sentinel at the end.  */
      qsort (cus, nculist, sizeof (*cus), mac_compare);
    }

  const unsigned char *readp = (const unsigned char *) data->d_buf;
  const unsigned char *readendp = readp + data->d_size;
  int level = 1;

  while (readp < readendp)
    {
      unsigned int opcode = *readp++;
      unsigned int u128;
      unsigned int u128_2;
      const unsigned char *endp;

      switch (opcode)
	{
	case DW_MACINFO_define:
	case DW_MACINFO_undef:
	case DW_MACINFO_vendor_ext:
	  /*  For the first two opcodes the parameters are
	        line, string
	      For the latter
	        number, string.
	      We can treat these cases together.  */
	  get_uleb128 (u128, readp);

	  endp = memchr (readp, '\0', readendp - readp);
	  if (endp == NULL)
	    {
	      printf (gettext ("\
%*s*** non-terminated string at end of section"),
		      level, "");
	      return;
	    }

	  if (opcode == DW_MACINFO_define)
	    printf ("%*s#define %s, line %u\n",
		    level, "", (char *) readp, u128);
	  else if (opcode == DW_MACINFO_undef)
	    printf ("%*s#undef %s, line %u\n",
		    level, "", (char *) readp, u128);
	  else
	    printf (" #vendor-ext %s, number %u\n", (char *) readp, u128);

	  readp = endp + 1;
	  break;

	case DW_MACINFO_start_file:
	  /* The two parameters are line and file index, in this order.  */
	  get_uleb128 (u128, readp);
	  get_uleb128 (u128_2, readp);

	  /* Find the CU DIE for this file.  */
	  size_t macoff = readp - (const unsigned char *) data->d_buf;
	  const char *fname = "???";
	  if (macoff >= cus[0].offset)
	    {
	      while (macoff >= cus[1].offset)
		++cus;

	      if (cus[0].files == NULL
		&& dwarf_getsrcfiles (&cus[0].die, &cus[0].files, NULL) != 0)
		cus[0].files = (Dwarf_Files *) -1l;

	      if (cus[0].files != (Dwarf_Files *) -1l)
		fname = (dwarf_filesrc (cus[0].files, u128_2, NULL, NULL)
			 ?: "???");
	    }

	  printf ("%*sstart_file %u, [%u] %s\n",
		  level, "", u128, u128_2, fname);
	  ++level;
	  break;

	case DW_MACINFO_end_file:
	  --level;
	  printf ("%*send_file\n", level, "");
	  /* Nothing more to do.  */
	  break;

	default:
	  // XXX gcc seems to generate files with a trailing zero.
	  if (opcode != 0 || readp != readendp)
	    printf ("%*s*** invalid opcode %u\n", level, "", opcode);
	  break;
	}
    }
}


/* Callback for printing global names.  */
static int
print_pubnames (Dwarf *dbg __attribute__ ((unused)), Dwarf_Global *global,
		void *arg)
{
  int *np = (int *) arg;

  printf (gettext (" [%5d] DIE offset: %6" PRId64
		   ", CU DIE offset: %6" PRId64 ", name: %s\n"),
	  (*np)++, global->die_offset, global->cu_offset, global->name);

  return 0;
}


/* Print the known exported symbols in the DWARF section '.debug_pubnames'.  */
static void
print_debug_pubnames_section (Ebl *ebl __attribute__ ((unused)),
			      GElf_Ehdr *ehdr __attribute__ ((unused)),
			      Elf_Scn *scn __attribute__ ((unused)),
			      GElf_Shdr *shdr, Dwarf *dbg)
{
  printf (gettext ("\nDWARF section '%s' at offset %#" PRIx64 ":\n"),
	  ".debug_pubnames", (uint64_t) shdr->sh_offset);

  int n = 0;
  (void) dwarf_getpubnames (dbg, print_pubnames, &n, 0);
}

/* Print the content of the DWARF string section '.debug_str'.  */
static void
print_debug_str_section (Ebl *ebl __attribute__ ((unused)),
			 GElf_Ehdr *ehdr __attribute__ ((unused)),
			 Elf_Scn *scn __attribute__ ((unused)),
			 GElf_Shdr *shdr, Dwarf *dbg)
{
  /* Compute floor(log16(shdr->sh_size)).  */
  GElf_Addr tmp = shdr->sh_size;
  int digits = 1;
  while (tmp >= 16)
    {
      ++digits;
      tmp >>= 4;
    }
  digits = MAX (4, digits);

  printf (gettext ("\nDWARF section '%s' at offset %#" PRIx64 ":\n"
		   " %*s  String\n"),
	  ".debug_str", (uint64_t) shdr->sh_offset,
	  /* TRANS: the debugstr| prefix makes the string unique.  */
	  digits + 2, sgettext ("debugstr|Offset"));

  Dwarf_Off offset = 0;
  while (offset < shdr->sh_size)
    {
      size_t len;
      const char *str = dwarf_getstring (dbg, offset, &len);
      if (str == NULL)
	{
	  printf (gettext (" *** error while reading strings: %s\n"),
		  dwarf_errmsg (-1));
	  break;
	}

      printf (" [%*" PRIx64 "]  \"%s\"\n", digits, (uint64_t) offset, str);

      offset += len + 1;
    }
}


static void
print_debug (Ebl *ebl, GElf_Ehdr *ehdr)
{
  /* Find the version information sections.  For this we have to
     search through the section table.  */
  Dwarf *dbg;
  Elf_Scn *scn;
  size_t shstrndx;

  /* Before we start the real work get a debug context descriptor.  */
  dbg = dwarf_begin_elf (ebl->elf, DWARF_C_READ, NULL);
  if (dbg == NULL)
    {
      error (0, 0, gettext ("cannot get debug context descriptor: %s"),
	     dwarf_errmsg (-1));
      return;
    }

  /* Get the section header string table index.  */
  if (elf_getshstrndx (ebl->elf, &shstrndx) < 0)
    error (EXIT_FAILURE, 0,
	   gettext ("cannot get section header string table index"));

  scn = NULL;
  while ((scn = elf_nextscn (ebl->elf, scn)) != NULL)
    {
      /* Handle the section if it is part of the versioning handling.  */
      GElf_Shdr shdr_mem;
      GElf_Shdr *shdr = gelf_getshdr (scn, &shdr_mem);

      if (shdr != NULL || shdr->sh_type != SHT_PROGBITS)
	{
	  static const struct
	  {
	    const char *name;
	    enum section_e bitmask;
	    void (*fp) (Ebl *, GElf_Ehdr *, Elf_Scn *, GElf_Shdr *, Dwarf *);
	  } debug_sections[] =
	    {
#define NEW_SECTION(name) \
	      { ".debug_" #name, section_##name, print_debug_##name##_section }
	      NEW_SECTION (abbrev),
	      NEW_SECTION (aranges),
	      NEW_SECTION (frame),
	      NEW_SECTION (info),
	      NEW_SECTION (line),
	      NEW_SECTION (loc),
	      NEW_SECTION (pubnames),
	      NEW_SECTION (str),
	      NEW_SECTION (macinfo),
	      NEW_SECTION (ranges),
	      { ".eh_frame", section_frame, print_debug_frame_section }
	    };
	  const int ndebug_sections = (sizeof (debug_sections)
				       / sizeof (debug_sections[0]));
	  const char *name = elf_strptr (ebl->elf, shstrndx,
					 shdr->sh_name);
	  int n;

	  for (n = 0; n < ndebug_sections; ++n)
	    if (strcmp (name, debug_sections[n].name) == 0)
	      {
		if (print_debug_sections & debug_sections[n].bitmask)
		  debug_sections[n].fp (ebl, ehdr, scn, shdr, dbg);
		break;
	      }
	}
    }

  /* We are done with the DWARF handling.  */
  dwarf_end (dbg);
}


static void
handle_notes (Ebl *ebl, GElf_Ehdr *ehdr)
{
  int class = gelf_getclass (ebl->elf);
  size_t cnt;

  /* We have to look through the program header to find the note
     sections.  There can be more than one.  */
  for (cnt = 0; cnt < ehdr->e_phnum; ++cnt)
    {
      GElf_Phdr mem;
      GElf_Phdr *phdr = gelf_getphdr (ebl->elf, cnt, &mem);

      if (phdr == NULL || phdr->p_type != PT_NOTE)
	/* Not what we are looking for.  */
	continue;

      printf (gettext ("\
\nNote segment of %" PRId64 " bytes at offset %#0" PRIx64 ":\n"),
	      phdr->p_filesz, phdr->p_offset);

      char *notemem = gelf_rawchunk (ebl->elf, phdr->p_offset, phdr->p_filesz);
      if (notemem == NULL)
	error (EXIT_FAILURE, 0,
	       gettext ("cannot get content of note section: %s"),
	       elf_errmsg (-1));

      fputs_unlocked (gettext ("  Owner          Data size  Type\n"), stdout);


      /* Handle the note section content.  It consists of one or more
	 entries each of which consists of five parts:

	 - a 32-bit name length
	 - a 32-bit descriptor length
	 - a 32-bit type field
	 - the NUL-terminated name, length as specified in the first field
	 - the descriptor, length as specified in the second field

	 The variable sized fields are padded to 32- or 64-bits
	 depending on whether the file is a 32- or 64-bit ELF file.
      */
      // XXX Which 64-bit archs need 8-byte alignment?  x86-64 does not.
      size_t align = class == ELFCLASS32 ? 4 : 4; // XXX 8;
#define ALIGNED_LEN(len) (((len) + align - 1) & ~(align - 1))

      size_t idx = 0;
      while (idx < phdr->p_filesz)
	{
	  /* XXX Handle 64-bit note section entries correctly.  */
	  struct
	  {
	    uint32_t namesz;
	    uint32_t descsz;
	    uint32_t type;
	    char name[0];
	  } *noteentry = (__typeof (noteentry)) (notemem + idx);

	  if (idx + 12 > phdr->p_filesz
	      || (idx + 12 + ALIGNED_LEN (noteentry->namesz)
		  + ALIGNED_LEN (noteentry->descsz) > phdr->p_filesz))
	    /* This entry isn't completely contained in the note
	       section.  Ignore it.  */
	    break;

	  char buf[100];
	  char buf2[100];
	  printf (gettext ("  %-13.*s  %9" PRId32 "  %s\n"),
		  (int) noteentry->namesz, noteentry->name,
		  noteentry->descsz,
		  ehdr->e_type == ET_CORE
		  ? ebl_core_note_type_name (ebl, noteentry->type,
					     buf, sizeof (buf))
		  : ebl_object_note_type_name (ebl, noteentry->type,
					       buf2, sizeof (buf2)));

	  /* Filter out invalid entries.  */
	  if (memchr (noteentry->name, '\0', noteentry->namesz) != NULL
	      /* XXX For now help broken Linux kernels.  */
	      || 1)
	    {
	      if (ehdr->e_type == ET_CORE)
		ebl_core_note (ebl, noteentry->name, noteentry->type,
			       noteentry->descsz,
			       &noteentry->name[ALIGNED_LEN (noteentry->namesz)]);
	      else
		ebl_object_note (ebl, noteentry->name, noteentry->type,
				 noteentry->descsz,
				 &noteentry->name[ALIGNED_LEN (noteentry->namesz)]);
	    }

	  /* Move to the next entry.  */
	  idx += (12 + ALIGNED_LEN (noteentry->namesz)
		  + ALIGNED_LEN (noteentry->descsz));
	}

      gelf_freechunk (ebl->elf, notemem);
    }
}