* elf32-mips.c (mips_elf_is_local_label_name): Accept the generic

[deliverable/binutils-gdb.git] / binutils / objdump.c

/* objdump.c -- dump information about an object file.
   Copyright 1990, 91, 92, 93, 94, 95, 96, 1997 Free Software Foundation, Inc.

This file is part of GNU Binutils.

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */

#include "bfd.h"
#include "getopt.h"
#include "progress.h"
#include "bucomm.h"
#include <ctype.h>
#include "dis-asm.h"
#include "libiberty.h"
#include "debug.h"
#include "budbg.h"

#ifdef ANSI_PROTOTYPES
#include <stdarg.h>
#else
#include <varargs.h>
#endif

/* Internal headers for the ELF .stab-dump code - sorry.  */
#define	BYTES_IN_WORD	32
#include "aout/aout64.h"

#ifdef NEED_DECLARATION_FPRINTF
/* This is needed by INIT_DISASSEMBLE_INFO.  */
extern int fprintf PARAMS ((FILE *, const char *, ...));
#endif

static char *default_target = NULL;	/* default at runtime */

static int show_version = 0;		/* show the version number */
static int dump_section_contents;	/* -s */
static int dump_section_headers;	/* -h */
static boolean dump_file_header;	/* -f */
static int dump_symtab;			/* -t */
static int dump_dynamic_symtab;		/* -T */
static int dump_reloc_info;		/* -r */
static int dump_dynamic_reloc_info;	/* -R */
static int dump_ar_hdrs;		/* -a */
static int dump_private_headers;	/* -p */
static int prefix_addresses;		/* --prefix-addresses */
static int with_line_numbers;		/* -l */
static boolean with_source_code;	/* -S */
static int show_raw_insn;		/* --show-raw-insn */
static int dump_stab_section_info;	/* --stabs */
static boolean disassemble;		/* -d */
static boolean disassemble_all;		/* -D */
static int disassemble_zeroes;		/* --disassemble-zeroes */
static boolean formats_info;		/* -i */
static char *only;			/* -j secname */
static int wide_output;			/* -w */
static bfd_vma start_address = (bfd_vma) -1; /* --start-address */
static bfd_vma stop_address = (bfd_vma) -1;  /* --stop-address */
static int dump_debugging;		/* --debugging */

/* Extra info to pass to the disassembler address printing function.  */
struct objdump_disasm_info {
  bfd *abfd;
  asection *sec;
  boolean require_sec;
};

/* Architecture to disassemble for, or default if NULL.  */
static char *machine = (char *) NULL;

/* Endianness to disassemble for, or default if BFD_ENDIAN_UNKNOWN.  */
static enum bfd_endian endian = BFD_ENDIAN_UNKNOWN;

/* The symbol table.  */
static asymbol **syms;

/* Number of symbols in `syms'.  */
static long symcount = 0;

/* The sorted symbol table.  */
static asymbol **sorted_syms;

/* Number of symbols in `sorted_syms'.  */
static long sorted_symcount = 0;

/* The dynamic symbol table.  */
static asymbol **dynsyms;

/* Number of symbols in `dynsyms'.  */
static long dynsymcount = 0;

/* Forward declarations.  */

static void
display_file PARAMS ((char *filename, char *target));

static void
dump_data PARAMS ((bfd *abfd));

static void
dump_relocs PARAMS ((bfd *abfd));

static void
dump_dynamic_relocs PARAMS ((bfd * abfd));

static void
dump_reloc_set PARAMS ((bfd *, asection *, arelent **, long));

static void
dump_symbols PARAMS ((bfd *abfd, boolean dynamic));

static void
display_bfd PARAMS ((bfd *abfd));

static void
objdump_print_value PARAMS ((bfd_vma, struct disassemble_info *, boolean));

static asymbol *
find_symbol_for_address PARAMS ((bfd *, asection *, bfd_vma, boolean, long *));

static void
objdump_print_addr_with_sym PARAMS ((bfd *, asection *, asymbol *, bfd_vma,
				     struct disassemble_info *, boolean));

static void
objdump_print_addr PARAMS ((bfd_vma, struct disassemble_info *, boolean));

static void
objdump_print_address PARAMS ((bfd_vma, struct disassemble_info *));

static void
show_line PARAMS ((bfd *, asection *, bfd_vma));

static void
disassemble_bytes PARAMS ((struct disassemble_info *, disassembler_ftype,
			   boolean, bfd_byte *, long, long, arelent ***,
			   arelent **));

static void
disassemble_data PARAMS ((bfd *));

static const char *
endian_string PARAMS ((enum bfd_endian));
\f
static void
usage (stream, status)
     FILE *stream;
     int status;
{
  fprintf (stream, "\
Usage: %s [-ahifdDprRtTxsSlw] [-b bfdname] [-m machine] [-j section-name]\n\
       [--archive-headers] [--target=bfdname] [--debugging] [--disassemble]\n\
       [--disassemble-all] [--disassemble-zeroes] [--file-headers]\n\
       [--section-headers] [--headers]\n\
       [--info] [--section=section-name] [--line-numbers] [--source]\n",
	   program_name);
  fprintf (stream, "\
       [--architecture=machine] [--reloc] [--full-contents] [--stabs]\n\
       [--syms] [--all-headers] [--dynamic-syms] [--dynamic-reloc]\n\
       [--wide] [--version] [--help] [--private-headers]\n\
       [--start-address=addr] [--stop-address=addr]\n\
       [--prefix-addresses] [--show-raw-insn]\n\
       [-EB|-EL] [--endian={big|little}] objfile...\n\
at least one option besides -l (--line-numbers) must be given\n");
  list_supported_targets (program_name, stream);
  if (status == 0)
    fprintf (stream, "Report bugs to bug-gnu-utils@prep.ai.mit.edu\n");
  exit (status);
}

/* 150 isn't special; it's just an arbitrary non-ASCII char value.  */

#define OPTION_ENDIAN (150)
#define OPTION_START_ADDRESS (OPTION_ENDIAN + 1)
#define OPTION_STOP_ADDRESS (OPTION_START_ADDRESS + 1)

static struct option long_options[]=
{
  {"all-headers", no_argument, NULL, 'x'},
  {"private-headers", no_argument, NULL, 'p'},
  {"architecture", required_argument, NULL, 'm'},
  {"archive-headers", no_argument, NULL, 'a'},
  {"debugging", no_argument, &dump_debugging, 1},
  {"disassemble", no_argument, NULL, 'd'},
  {"disassemble-all", no_argument, NULL, 'D'},
  {"disassemble-zeroes", no_argument, &disassemble_zeroes, 1},
  {"dynamic-reloc", no_argument, NULL, 'R'},
  {"dynamic-syms", no_argument, NULL, 'T'},
  {"endian", required_argument, NULL, OPTION_ENDIAN},
  {"file-headers", no_argument, NULL, 'f'},
  {"full-contents", no_argument, NULL, 's'},
  {"headers", no_argument, NULL, 'h'},
  {"help", no_argument, NULL, 'H'},
  {"info", no_argument, NULL, 'i'},
  {"line-numbers", no_argument, NULL, 'l'},
  {"prefix-addresses", no_argument, &prefix_addresses, 1},
  {"reloc", no_argument, NULL, 'r'},
  {"section", required_argument, NULL, 'j'},
  {"section-headers", no_argument, NULL, 'h'},
  {"show-raw-insn", no_argument, &show_raw_insn, 1},
  {"source", no_argument, NULL, 'S'},
  {"stabs", no_argument, &dump_stab_section_info, 1},
  {"start-address", required_argument, NULL, OPTION_START_ADDRESS},
  {"stop-address", required_argument, NULL, OPTION_STOP_ADDRESS},
  {"syms", no_argument, NULL, 't'},
  {"target", required_argument, NULL, 'b'},
  {"version", no_argument, &show_version, 1},
  {"wide", no_argument, &wide_output, 'w'},
  {0, no_argument, 0, 0}
};
\f
static void
dump_section_header (abfd, section, ignored)
     bfd *abfd;
     asection *section;
     PTR ignored;
{
  char *comma = "";

  printf ("%3d %-13s %08lx  ", section->index,
	  bfd_get_section_name (abfd, section),
	  (unsigned long) bfd_section_size (abfd, section));
  printf_vma (bfd_get_section_vma (abfd, section));
  printf ("  ");
  printf_vma (section->lma);
  printf ("  %08lx  2**%u", section->filepos,
	  bfd_get_section_alignment (abfd, section));
  if (! wide_output)
    printf ("\n                ");
  printf ("  ");

#define PF(x, y) \
  if (section->flags & x) { printf ("%s%s", comma, y); comma = ", "; }

  PF (SEC_HAS_CONTENTS, "CONTENTS");
  PF (SEC_ALLOC, "ALLOC");
  PF (SEC_CONSTRUCTOR, "CONSTRUCTOR");
  PF (SEC_CONSTRUCTOR_TEXT, "CONSTRUCTOR TEXT");
  PF (SEC_CONSTRUCTOR_DATA, "CONSTRUCTOR DATA");
  PF (SEC_CONSTRUCTOR_BSS, "CONSTRUCTOR BSS");
  PF (SEC_LOAD, "LOAD");
  PF (SEC_RELOC, "RELOC");
#ifdef SEC_BALIGN
  PF (SEC_BALIGN, "BALIGN");
#endif
  PF (SEC_READONLY, "READONLY");
  PF (SEC_CODE, "CODE");
  PF (SEC_DATA, "DATA");
  PF (SEC_ROM, "ROM");
  PF (SEC_DEBUGGING, "DEBUGGING");
  PF (SEC_NEVER_LOAD, "NEVER_LOAD");
  PF (SEC_EXCLUDE, "EXCLUDE");
  PF (SEC_SORT_ENTRIES, "SORT_ENTRIES");

  if ((section->flags & SEC_LINK_ONCE) != 0)
    {
      const char *ls;

      switch (section->flags & SEC_LINK_DUPLICATES)
	{
	default:
	  abort ();
	case SEC_LINK_DUPLICATES_DISCARD:
	  ls = "LINK_ONCE_DISCARD";
	  break;
	case SEC_LINK_DUPLICATES_ONE_ONLY:
	  ls = "LINK_ONCE_ONE_ONLY";
	  break;
	case SEC_LINK_DUPLICATES_SAME_SIZE:
	  ls = "LINK_ONCE_SAME_SIZE";
	  break;
	case SEC_LINK_DUPLICATES_SAME_CONTENTS:
	  ls = "LINK_ONCE_SAME_CONTENTS";
	  break;
	}
      printf ("%s%s", comma, ls);
      comma = ", ";
    }

  printf ("\n");
#undef PF
}

static void
dump_headers (abfd)
     bfd *abfd;
{
  printf ("Sections:\n");
#ifndef BFD64
  printf ("Idx Name          Size      VMA       LMA       File off  Algn\n");
#else
  printf ("Idx Name          Size      VMA               LMA               File off  Algn\n");
#endif
  bfd_map_over_sections (abfd, dump_section_header, (PTR) NULL);
}
\f
static asymbol **
slurp_symtab (abfd)
     bfd *abfd;
{
  asymbol **sy = (asymbol **) NULL;
  long storage;

  if (!(bfd_get_file_flags (abfd) & HAS_SYMS))
    {
      printf ("No symbols in \"%s\".\n", bfd_get_filename (abfd));
      symcount = 0;
      return NULL;
    }

  storage = bfd_get_symtab_upper_bound (abfd);
  if (storage < 0)
    bfd_fatal (bfd_get_filename (abfd));

  if (storage)
    {
      sy = (asymbol **) xmalloc (storage);
    }
  symcount = bfd_canonicalize_symtab (abfd, sy);
  if (symcount < 0)
    bfd_fatal (bfd_get_filename (abfd));
  if (symcount == 0)
    fprintf (stderr, "%s: %s: No symbols\n",
	     program_name, bfd_get_filename (abfd));
  return sy;
}

/* Read in the dynamic symbols.  */

static asymbol **
slurp_dynamic_symtab (abfd)
     bfd *abfd;
{
  asymbol **sy = (asymbol **) NULL;
  long storage;

  storage = bfd_get_dynamic_symtab_upper_bound (abfd);
  if (storage < 0)
    {
      if (!(bfd_get_file_flags (abfd) & DYNAMIC))
	{
	  fprintf (stderr, "%s: %s: not a dynamic object\n",
		   program_name, bfd_get_filename (abfd));
	  dynsymcount = 0;
	  return NULL;
	}

      bfd_fatal (bfd_get_filename (abfd));
    }

  if (storage)
    {
      sy = (asymbol **) xmalloc (storage);
    }
  dynsymcount = bfd_canonicalize_dynamic_symtab (abfd, sy);
  if (dynsymcount < 0)
    bfd_fatal (bfd_get_filename (abfd));
  if (dynsymcount == 0)
    fprintf (stderr, "%s: %s: No dynamic symbols\n",
	     program_name, bfd_get_filename (abfd));
  return sy;
}

/* Filter out (in place) symbols that are useless for disassembly.
   COUNT is the number of elements in SYMBOLS.
   Return the number of useful symbols. */

static long
remove_useless_symbols (symbols, count)
     asymbol **symbols;
     long count;
{
  register asymbol **in_ptr = symbols, **out_ptr = symbols;

  while (--count >= 0)
    {
      asymbol *sym = *in_ptr++;

      if (sym->name == NULL || sym->name[0] == '\0')
	continue;
      if (sym->flags & (BSF_DEBUGGING))
	continue;
      if (bfd_is_und_section (sym->section)
	  || bfd_is_com_section (sym->section))
	continue;

      *out_ptr++ = sym;
    }
  return out_ptr - symbols;
}

/* Sort symbols into value order.  */

static int 
compare_symbols (ap, bp)
     const PTR ap;
     const PTR bp;
{
  const asymbol *a = *(const asymbol **)ap;
  const asymbol *b = *(const asymbol **)bp;
  const char *an, *bn;
  size_t anl, bnl;
  boolean af, bf;
  flagword aflags, bflags;

  if (bfd_asymbol_value (a) > bfd_asymbol_value (b))
    return 1;
  else if (bfd_asymbol_value (a) < bfd_asymbol_value (b))
    return -1;

  if (a->section > b->section)
    return 1;
  else if (a->section < b->section)
    return -1;

  an = bfd_asymbol_name (a);
  bn = bfd_asymbol_name (b);
  anl = strlen (an);
  bnl = strlen (bn);

  /* The symbols gnu_compiled and gcc2_compiled convey no real
     information, so put them after other symbols with the same value.  */

  af = (strstr (an, "gnu_compiled") != NULL
	|| strstr (an, "gcc2_compiled") != NULL);
  bf = (strstr (bn, "gnu_compiled") != NULL
	|| strstr (bn, "gcc2_compiled") != NULL);

  if (af && ! bf)
    return 1;
  if (! af && bf)
    return -1;

  /* We use a heuristic for the file name, to try to sort it after
     more useful symbols.  It may not work on non Unix systems, but it
     doesn't really matter; the only difference is precisely which
     symbol names get printed.  */

#define file_symbol(s, sn, snl)			\
  (((s)->flags & BSF_FILE) != 0			\
   || ((sn)[(snl) - 2] == '.'			\
       && ((sn)[(snl) - 1] == 'o'		\
	   || (sn)[(snl) - 1] == 'a')))

  af = file_symbol (a, an, anl);
  bf = file_symbol (b, bn, bnl);

  if (af && ! bf)
    return 1;
  if (! af && bf)
    return -1;

  /* Try to sort global symbols before local symbols before function
     symbols before debugging symbols.  */

  aflags = a->flags;
  bflags = b->flags;

  if ((aflags & BSF_DEBUGGING) != (bflags & BSF_DEBUGGING))
    {
      if ((aflags & BSF_DEBUGGING) != 0)
	return 1;
      else
	return -1;
    }
  if ((aflags & BSF_FUNCTION) != (bflags & BSF_FUNCTION))
    {
      if ((aflags & BSF_FUNCTION) != 0)
	return -1;
      else
	return 1;
    }
  if ((aflags & BSF_LOCAL) != (bflags & BSF_LOCAL))
    {
      if ((aflags & BSF_LOCAL) != 0)
	return 1;
      else
	return -1;
    }
  if ((aflags & BSF_GLOBAL) != (bflags & BSF_GLOBAL))
    {
      if ((aflags & BSF_GLOBAL) != 0)
	return -1;
      else
	return 1;
    }

  /* Symbols that start with '.' might be section names, so sort them
     after symbols that don't start with '.'.  */
  if (an[0] == '.' && bn[0] != '.')
    return 1;
  if (an[0] != '.' && bn[0] == '.')
    return -1;

  /* Finally, if we can't distinguish them in any other way, try to
     get consistent results by sorting the symbols by name.  */
  return strcmp (an, bn);
}

/* Sort relocs into address order.  */

static int
compare_relocs (ap, bp)
     const PTR ap;
     const PTR bp;
{
  const arelent *a = *(const arelent **)ap;
  const arelent *b = *(const arelent **)bp;

  if (a->address > b->address)
    return 1;
  else if (a->address < b->address)
    return -1;

  /* So that associated relocations tied to the same address show up
     in the correct order, we don't do any further sorting.  */
  if (a > b)
    return 1;
  else if (a < b)
    return -1;
  else
    return 0;
}

/* Print VMA to STREAM.  If SKIP_ZEROES is true, omit leading zeroes.  */

static void
objdump_print_value (vma, info, skip_zeroes)
     bfd_vma vma;
     struct disassemble_info *info;
     boolean skip_zeroes;
{
  char buf[30];
  char *p;

  sprintf_vma (buf, vma);
  if (! skip_zeroes)
    p = buf;
  else
    {
      for (p = buf; *p == '0'; ++p)
	;
      if (*p == '\0')
	--p;
    }
  (*info->fprintf_func) (info->stream, "%s", p);
}

/* Locate a symbol given a bfd, a section, and a VMA.  If REQUIRE_SEC
   is true, then always require the symbol to be in the section.  This
   returns NULL if there is no suitable symbol.  If PLACE is not NULL,
   then *PLACE is set to the index of the symbol in sorted_syms.  */

static asymbol *
find_symbol_for_address (abfd, sec, vma, require_sec, place)
     bfd *abfd;
     asection *sec;
     bfd_vma vma;
     boolean require_sec;
     long *place;
{
  /* @@ Would it speed things up to cache the last two symbols returned,
     and maybe their address ranges?  For many processors, only one memory
     operand can be present at a time, so the 2-entry cache wouldn't be
     constantly churned by code doing heavy memory accesses.  */

  /* Indices in `sorted_syms'.  */
  long min = 0;
  long max = sorted_symcount;
  long thisplace;

  if (sorted_symcount < 1)
    return NULL;

  /* Perform a binary search looking for the closest symbol to the
     required value.  We are searching the range (min, max].  */
  while (min + 1 < max)
    {
      asymbol *sym;

      thisplace = (max + min) / 2;
      sym = sorted_syms[thisplace];

      if (bfd_asymbol_value (sym) > vma)
	max = thisplace;
      else if (bfd_asymbol_value (sym) < vma)
	min = thisplace;
      else
	{
	  min = thisplace;
	  break;
	}
    }

  /* The symbol we want is now in min, the low end of the range we
     were searching.  If there are several symbols with the same
     value, we want the first one.  */
  thisplace = min;
  while (thisplace > 0
	 && (bfd_asymbol_value (sorted_syms[thisplace])
	     == bfd_asymbol_value (sorted_syms[thisplace - 1])))
    --thisplace;

  /* If the file is relocateable, and the symbol could be from this
     section, prefer a symbol from this section over symbols from
     others, even if the other symbol's value might be closer.
       
     Note that this may be wrong for some symbol references if the
     sections have overlapping memory ranges, but in that case there's
     no way to tell what's desired without looking at the relocation
     table.  */

  if (sorted_syms[thisplace]->section != sec
      && (require_sec
	  || ((abfd->flags & HAS_RELOC) != 0
	      && vma >= bfd_get_section_vma (abfd, sec)
	      && vma < (bfd_get_section_vma (abfd, sec)
			+ bfd_section_size (abfd, sec)))))
    {
      long i;

      for (i = thisplace + 1; i < sorted_symcount; i++)
	{
	  if (bfd_asymbol_value (sorted_syms[i])
	      != bfd_asymbol_value (sorted_syms[thisplace]))
	    break;
	}
      --i;
      for (; i >= 0; i--)
	{
	  if (sorted_syms[i]->section == sec
	      && (i == 0
		  || sorted_syms[i - 1]->section != sec
		  || (bfd_asymbol_value (sorted_syms[i])
		      != bfd_asymbol_value (sorted_syms[i - 1]))))
	    {
	      thisplace = i;
	      break;
	    }
	}

      if (sorted_syms[thisplace]->section != sec)
	{
	  /* We didn't find a good symbol with a smaller value.
	     Look for one with a larger value.  */
	  for (i = thisplace + 1; i < sorted_symcount; i++)
	    {
	      if (sorted_syms[i]->section == sec)
		{
		  thisplace = i;
		  break;
		}
	    }
	}

      if (sorted_syms[thisplace]->section != sec
	  && (require_sec
	      || ((abfd->flags & HAS_RELOC) != 0
		  && vma >= bfd_get_section_vma (abfd, sec)
		  && vma < (bfd_get_section_vma (abfd, sec)
			    + bfd_section_size (abfd, sec)))))
	{
	  /* There is no suitable symbol.  */
	  return NULL;
	}
    }

  if (place != NULL)
    *place = thisplace;

  return sorted_syms[thisplace];
}

/* Print an address to INFO symbolically.  */

static void
objdump_print_addr_with_sym (abfd, sec, sym, vma, info, skip_zeroes)
     bfd *abfd;
     asection *sec;
     asymbol *sym;
     bfd_vma vma;
     struct disassemble_info *info;
     boolean skip_zeroes;
{
  objdump_print_value (vma, info, skip_zeroes);

  if (sym == NULL)
    {
      bfd_vma secaddr;

      (*info->fprintf_func) (info->stream, " <%s",
			     bfd_get_section_name (abfd, sec));
      secaddr = bfd_get_section_vma (abfd, sec);
      if (vma < secaddr)
	{
	  (*info->fprintf_func) (info->stream, "-");
	  objdump_print_value (secaddr - vma, info, true);
	}
      else if (vma > secaddr)
	{
	  (*info->fprintf_func) (info->stream, "+");
	  objdump_print_value (vma - secaddr, info, true);
	}
      (*info->fprintf_func) (info->stream, ">");
    }
  else
    {
      (*info->fprintf_func) (info->stream, " <%s", sym->name);
      if (bfd_asymbol_value (sym) > vma)
	{
	  (*info->fprintf_func) (info->stream, "-");
	  objdump_print_value (bfd_asymbol_value (sym) - vma, info, true);
	}
      else if (vma > bfd_asymbol_value (sym))
	{
	  (*info->fprintf_func) (info->stream, "+");
	  objdump_print_value (vma - bfd_asymbol_value (sym), info, true);
	}
      (*info->fprintf_func) (info->stream, ">");
    }
}

/* Print VMA to INFO, symbolically if possible.  If SKIP_ZEROES is
   true, don't output leading zeroes.  */

static void
objdump_print_addr (vma, info, skip_zeroes)
     bfd_vma vma;
     struct disassemble_info *info;
     boolean skip_zeroes;
{
  struct objdump_disasm_info *aux;
  asymbol *sym;

  if (sorted_symcount < 1)
    {
      objdump_print_value (vma, info, skip_zeroes);
      return;
    }

  aux = (struct objdump_disasm_info *) info->application_data;
  sym = find_symbol_for_address (aux->abfd, aux->sec, vma, aux->require_sec,
				 (long *) NULL);
  objdump_print_addr_with_sym (aux->abfd, aux->sec, sym, vma, info,
			       skip_zeroes);
}

/* Print VMA to INFO.  This function is passed to the disassembler
   routine.  */

static void
objdump_print_address (vma, info)
     bfd_vma vma;
     struct disassemble_info *info;
{
  objdump_print_addr (vma, info, ! prefix_addresses);
}

/* Hold the last function name and the last line number we displayed
   in a disassembly.  */

static char *prev_functionname;
static unsigned int prev_line;

/* We keep a list of all files that we have seen when doing a
   dissassembly with source, so that we know how much of the file to
   display.  This can be important for inlined functions.  */

struct print_file_list
{
  struct print_file_list *next;
  char *filename;
  unsigned int line;
  FILE *f;
};

static struct print_file_list *print_files;

/* The number of preceding context lines to show when we start
   displaying a file for the first time.  */

#define SHOW_PRECEDING_CONTEXT_LINES (5)

/* Skip ahead to a given line in a file, optionally printing each
   line.  */

static void
skip_to_line PARAMS ((struct print_file_list *, unsigned int, boolean));

static void
skip_to_line (p, line, show)
     struct print_file_list *p;
     unsigned int line;
     boolean show;
{
  while (p->line < line)
    {
      char buf[100];

      if (fgets (buf, sizeof buf, p->f) == NULL)
	{
	  fclose (p->f);
	  p->f = NULL;
	  break;
	}

      if (show)
	printf ("%s", buf);

      if (strchr (buf, '\n') != NULL)
	++p->line;
    }
}  

/* Show the line number, or the source line, in a dissassembly
   listing.  */

static void
show_line (abfd, section, off)
     bfd *abfd;
     asection *section;
     bfd_vma off;
{
  CONST char *filename;
  CONST char *functionname;
  unsigned int line;

  if (! with_line_numbers && ! with_source_code)
    return;

  if (! bfd_find_nearest_line (abfd, section, syms, off, &filename,
			       &functionname, &line))
    return;

  if (filename != NULL && *filename == '\0')
    filename = NULL;
  if (functionname != NULL && *functionname == '\0')
    functionname = NULL;

  if (with_line_numbers)
    {
      if (functionname != NULL
	  && (prev_functionname == NULL
	      || strcmp (functionname, prev_functionname) != 0))
	printf ("%s():\n", functionname);
      if (line > 0 && line != prev_line)
	printf ("%s:%u\n", filename == NULL ? "???" : filename, line);
    }

  if (with_source_code
      && filename != NULL
      && line > 0)
    {
      struct print_file_list **pp, *p;

      for (pp = &print_files; *pp != NULL; pp = &(*pp)->next)
	if (strcmp ((*pp)->filename, filename) == 0)
	  break;
      p = *pp;

      if (p != NULL)
	{
	  if (p != print_files)
	    {
	      int l;

	      /* We have reencountered a file name which we saw
		 earlier.  This implies that either we are dumping out
		 code from an included file, or the same file was
		 linked in more than once.  There are two common cases
		 of an included file: inline functions in a header
		 file, and a bison or flex skeleton file.  In the
		 former case we want to just start printing (but we
		 back up a few lines to give context); in the latter
		 case we want to continue from where we left off.  I
		 can't think of a good way to distinguish the cases,
		 so I used a heuristic based on the file name.  */
	      if (strcmp (p->filename + strlen (p->filename) - 2, ".h") != 0)
		l = p->line;
	      else
		{
		  l = line - SHOW_PRECEDING_CONTEXT_LINES;
		  if (l <= 0)
		    l = 1;
		}

	      if (p->f == NULL)
		{
		  p->f = fopen (p->filename, "r");
		  p->line = 0;
		}
	      if (p->f != NULL)
		skip_to_line (p, l, false);

	      if (print_files->f != NULL)
		{
		  fclose (print_files->f);
		  print_files->f = NULL;
		}
	    }

	  if (p->f != NULL)
	    {
	      skip_to_line (p, line, true);
	      *pp = p->next;
	      p->next = print_files;
	      print_files = p;
	    }
	}
      else
	{
	  FILE *f;

	  f = fopen (filename, "r");
	  if (f != NULL)
	    {
	      int l;

	      p = ((struct print_file_list *)
		   xmalloc (sizeof (struct print_file_list)));
	      p->filename = xmalloc (strlen (filename) + 1);
	      strcpy (p->filename, filename);
	      p->line = 0;
	      p->f = f;

	      if (print_files != NULL && print_files->f != NULL)
		{
		  fclose (print_files->f);
		  print_files->f = NULL;
		}
	      p->next = print_files;
	      print_files = p;

	      l = line - SHOW_PRECEDING_CONTEXT_LINES;
	      if (l <= 0)
		l = 1;
	      skip_to_line (p, l, false);
	      if (p->f != NULL)
		skip_to_line (p, line, true);
	    }
	}
    }

  if (functionname != NULL
      && (prev_functionname == NULL
	  || strcmp (functionname, prev_functionname) != 0))
    {
      if (prev_functionname != NULL)
	free (prev_functionname);
      prev_functionname = xmalloc (strlen (functionname) + 1);
      strcpy (prev_functionname, functionname);
    }

  if (line > 0 && line != prev_line)
    prev_line = line;
}

/* Pseudo FILE object for strings.  */
typedef struct {
  char *buffer;
  char *current;
} SFILE;

/* sprintf to a "stream" */

#ifdef ANSI_PROTOTYPES
static int
objdump_sprintf (SFILE *f, const char *format, ...)
{
  int n;
  va_list args;

  va_start (args, format);
  vsprintf (f->current, format, args);
  f->current += n = strlen (f->current);
  va_end (args);
  return n;
}
#else
static int
objdump_sprintf (va_alist)
     va_dcl
{
  int n;
  SFILE *f;
  const char *format;
  va_list args;

  va_start (args);
  f = va_arg (args, SFILE *);
  format = va_arg (args, const char *);
  vsprintf (f->current, format, args);
  f->current += n = strlen (f->current);
  va_end (args);
  return n;
}
#endif

/* The number of zeroes we want to see before we start skipping them.
   The number is arbitrarily chosen.  */

#define SKIP_ZEROES (8)

/* The number of zeroes to skip at the end of a section.  If the
   number of zeroes at the end is between SKIP_ZEROES_AT_END and
   SKIP_ZEROES, they will be disassembled.  If there are fewer than
   SKIP_ZEROES_AT_END, they will be skipped.  This is a heuristic
   attempt to avoid disassembling zeroes inserted by section
   alignment.  */

#define SKIP_ZEROES_AT_END (3)

/* Disassemble some data in memory between given values.  */

static void
disassemble_bytes (info, disassemble_fn, insns, data, start, stop, relppp,
		   relppend)
     struct disassemble_info *info;
     disassembler_ftype disassemble_fn;
     boolean insns;
     bfd_byte *data;
     long start;
     long stop;
     arelent ***relppp;
     arelent **relppend;
{
  struct objdump_disasm_info *aux;
  asection *section;
  int bytes_per_line;
  boolean done_dot;
  int skip_addr_chars;
  long i;

  aux = (struct objdump_disasm_info *) info->application_data;
  section = aux->sec;

  if (insns)
    bytes_per_line = 4;
  else
    bytes_per_line = 16;

  /* Figure out how many characters to skip at the start of an
     address, to make the disassembly look nicer.  We discard leading
     zeroes in chunks of 4, ensuring that there is always a leading
     zero remaining.  */
  skip_addr_chars = 0;
  if (! prefix_addresses)
    {
      char buf[30];
      char *s;

      sprintf_vma (buf,
		   section->vma + bfd_section_size (section->owner, section));
      s = buf;
      while (s[0] == '0' && s[1] == '0' && s[2] == '0' && s[3] == '0'
	     && s[4] == '0')
	{
	  skip_addr_chars += 4;
	  s += 4;
	}
    }

  info->insn_info_valid = 0;

  done_dot = false;
  i = start;
  while (i < stop)
    {
      long z;
      int bytes;
      boolean need_nl = false;

      /* If we see more than SKIP_ZEROES bytes of zeroes, we just
         print `...'.  */
      for (z = i; z < stop; z++)
	if (data[z] != 0)
	  break;
      if (! disassemble_zeroes
	  && (info->insn_info_valid == 0
	      || info->branch_delay_insns == 0)
	  && (z - i >= SKIP_ZEROES
	      || (z == stop && z - i < SKIP_ZEROES_AT_END)))
	{
	  printf ("\t...\n");

	  /* If there are more nonzero bytes to follow, we only skip
             zeroes in multiples of 4, to try to avoid running over
             the start of an instruction which happens to start with
             zero.  */
	  if (z != stop)
	    z = i + ((z - i) &~ 3);

	  bytes = z - i;
	}
      else
	{
	  char buf[1000];
	  SFILE sfile;
	  int bpc, pb = 0;

	  done_dot = false;

	  if (with_line_numbers || with_source_code)
	    show_line (aux->abfd, section, i);

	  if (! prefix_addresses)
	    {
	      char *s;

	      sprintf_vma (buf, section->vma + i);
	      for (s = buf + skip_addr_chars; *s == '0'; s++)
		*s = ' ';
	      if (*s == '\0')
		*--s = '0';
	      printf ("%s:\t", buf + skip_addr_chars);
	    }
	  else
	    {
	      aux->require_sec = true;
	      objdump_print_address (section->vma + i, info);
	      aux->require_sec = false;
	      putchar (' ');
	    }

	  if (insns)
	    {
	      sfile.buffer = sfile.current = buf;
	      info->fprintf_func = (fprintf_ftype) objdump_sprintf;
	      info->stream = (FILE *) &sfile;
	      info->bytes_per_line = 0;
	      info->bytes_per_chunk = 0;
	      bytes = (*disassemble_fn) (section->vma + i, info);
	      info->fprintf_func = (fprintf_ftype) fprintf;
	      info->stream = stdout;
	      if (info->bytes_per_line != 0)
		bytes_per_line = info->bytes_per_line;
	      if (bytes < 0)
		break;
	    }
	  else
	    {
	      long j;

	      bytes = bytes_per_line;
	      if (i + bytes > stop)
		bytes = stop - i;

	      for (j = i; j < i + bytes; ++j)
		{
		  if (isprint (data[j]))
		    buf[j - i] = data[j];
		  else
		    buf[j - i] = '.';
		}
	      buf[j - i] = '\0';
	    }

	  if (! prefix_addresses || show_raw_insn)
	    {
	      long j;

	      /* If ! prefix_addresses and ! wide_output, we print
                 bytes_per_line bytes per line.  */
	      pb = bytes;
	      if (pb > bytes_per_line && ! prefix_addresses && ! wide_output)
		pb = bytes_per_line;

	      if (info->bytes_per_chunk)
		bpc = info->bytes_per_chunk;
	      else
		bpc = 1;

	      for (j = i; j < i + pb; j += bpc)
		{
		  int k;
		  if (bpc > 1 && info->display_endian == BFD_ENDIAN_LITTLE)
		    {
		      for (k = bpc - 1; k >= 0; k--)
			printf ("%02x", (unsigned) data[j + k]);
		      putchar (' ');
		    }
		  else
		    {
		      for (k = 0; k < bpc; k++)
			printf ("%02x", (unsigned) data[j + k]);
		      putchar (' ');
		    }
		}

	      for (; pb < bytes_per_line; pb += bpc)
		{
		  int k;

		  for (k = 0; k < bpc; k++)
		    printf ("  ");
		  putchar (' ');
		}

	      /* Separate raw data from instruction by extra space.  */
	      if (insns)
		putchar ('\t');
	      else
		printf ("    ");
	    }

	  printf ("%s", buf);

	  if (! prefix_addresses || show_raw_insn)
	    {
	      while (pb < bytes)
		{
		  long j;
		  char *s;

		  putchar ('\n');
		  j = i + pb;

		  sprintf_vma (buf, section->vma + j);
		  for (s = buf + skip_addr_chars; *s == '0'; s++)
		    *s = ' ';
		  if (*s == '\0')
		    *--s = '0';
		  printf ("%s:\t", buf + skip_addr_chars);

		  pb += bytes_per_line;
		  if (pb > bytes)
		    pb = bytes;
		  for (; j < i + pb; j += bpc)
		    {
		      int k;

		      if (bpc > 1 && info->display_endian == BFD_ENDIAN_LITTLE)
			{
			  for (k = bpc - 1; k >= 0; k--)
			    printf ("%02x", (unsigned) data[j + k]);
			  putchar (' ');
			}
		      else
			{
			  for (k = 0; k < bpc; k++)
			    printf ("%02x", (unsigned) data[j + k]);
			  putchar (' ');
			}
		    }
		}
	    }

	  if (!wide_output)
	    putchar ('\n');
	  else
	    need_nl = true;
	}

      if (dump_reloc_info
	  && (section->flags & SEC_RELOC) != 0)
	{
	  while ((*relppp) < relppend
		 && ((**relppp)->address >= (bfd_vma) i
		     && (**relppp)->address < (bfd_vma) i + bytes))
	    {
	      arelent *q;
	      const char *sym_name;

	      q = **relppp;

	      if (wide_output)
		putchar ('\t');
	      else
		printf ("\t\t\t");

	      objdump_print_value (section->vma + q->address, info, true);

	      printf (": %s\t", q->howto->name);

	      if (q->sym_ptr_ptr != NULL
		  && *q->sym_ptr_ptr != NULL)
		{
		  sym_name = bfd_asymbol_name (*q->sym_ptr_ptr);
		  if (sym_name == NULL || *sym_name == '\0')
		    {
		      asection *sym_sec;

		      sym_sec = bfd_get_section (*q->sym_ptr_ptr);
		      sym_name = bfd_get_section_name (abfd, sym_sec);
		      if (sym_name == NULL || *sym_name == '\0')
			sym_name = "*unknown*";
		    }
		}
	      else
		sym_name = "*unknown*";

	      printf ("%s", sym_name);

	      if (q->addend)
		{
		  printf ("+0x");
		  objdump_print_value (q->addend, info, true);
		}

	      printf ("\n");
	      need_nl = false;
	      ++(*relppp);
	    }
	}

      if (need_nl)
	printf ("\n");

      i += bytes;
    }
}

/* Disassemble the contents of an object file.  */

static void
disassemble_data (abfd)
     bfd *abfd;
{
  long i;
  disassembler_ftype disassemble_fn;
  struct disassemble_info disasm_info;
  struct objdump_disasm_info aux;
  asection *section;

  print_files = NULL;
  prev_functionname = NULL;
  prev_line = -1;

  /* We make a copy of syms to sort.  We don't want to sort syms
     because that will screw up the relocs.  */
  sorted_syms = (asymbol **) xmalloc (symcount * sizeof (asymbol *));
  memcpy (sorted_syms, syms, symcount * sizeof (asymbol *));

  sorted_symcount = remove_useless_symbols (sorted_syms, symcount);

  /* Sort the symbols into section and symbol order */
  qsort (sorted_syms, sorted_symcount, sizeof (asymbol *), compare_symbols);

  INIT_DISASSEMBLE_INFO(disasm_info, stdout, fprintf);
  disasm_info.application_data = (PTR) &aux;
  aux.abfd = abfd;
  aux.require_sec = false;
  disasm_info.print_address_func = objdump_print_address;

  if (machine != (char *) NULL)
    {
      const bfd_arch_info_type *info = bfd_scan_arch (machine);
      if (info == NULL)
	{
	  fprintf (stderr, "%s: Can't use supplied machine %s\n",
		   program_name,
		   machine);
	  exit (1);
	}
      abfd->arch_info = info;
    }

  if (endian != BFD_ENDIAN_UNKNOWN)
    {
      struct bfd_target *xvec;

      xvec = (struct bfd_target *) xmalloc (sizeof (struct bfd_target));
      memcpy (xvec, abfd->xvec, sizeof (struct bfd_target));
      xvec->byteorder = endian;
      abfd->xvec = xvec;
    }

  disassemble_fn = disassembler (abfd);
  if (!disassemble_fn)
    {
      fprintf (stderr, "%s: Can't disassemble for architecture %s\n",
	       program_name,
	       bfd_printable_arch_mach (bfd_get_arch (abfd), 0));
      exit (1);
    }

  disasm_info.flavour = bfd_get_flavour (abfd);
  disasm_info.arch = bfd_get_arch (abfd);
  disasm_info.mach = bfd_get_mach (abfd);
  if (bfd_big_endian (abfd))
    disasm_info.endian = BFD_ENDIAN_BIG;
  else if (bfd_little_endian (abfd))
    disasm_info.endian = BFD_ENDIAN_LITTLE;
  else
    /* ??? Aborting here seems too drastic.  We could default to big or little
       instead.  */
    disasm_info.endian = BFD_ENDIAN_UNKNOWN;

  for (section = abfd->sections;
       section != (asection *) NULL;
       section = section->next)
    {
      bfd_byte *data = NULL;
      bfd_size_type datasize = 0;
      arelent **relbuf = NULL;
      arelent **relpp = NULL;
      arelent **relppend = NULL;
      long stop;

      if ((section->flags & SEC_LOAD) == 0
	  || (! disassemble_all
	      && only == NULL
	      && (section->flags & SEC_CODE) == 0))
	continue;
      if (only != (char *) NULL && strcmp (only, section->name) != 0)
	continue;

      if (dump_reloc_info
	  && (section->flags & SEC_RELOC) != 0)
	{
	  long relsize;

	  relsize = bfd_get_reloc_upper_bound (abfd, section);
	  if (relsize < 0)
	    bfd_fatal (bfd_get_filename (abfd));

	  if (relsize > 0)
	    {
	      long relcount;

	      relbuf = (arelent **) xmalloc (relsize);
	      relcount = bfd_canonicalize_reloc (abfd, section, relbuf, syms);
	      if (relcount < 0)
		bfd_fatal (bfd_get_filename (abfd));

	      /* Sort the relocs by address.  */
	      qsort (relbuf, relcount, sizeof (arelent *), compare_relocs);

	      relpp = relbuf;
	      relppend = relpp + relcount;
	    }
	}

      printf ("Disassembly of section %s:\n", section->name);

      datasize = bfd_get_section_size_before_reloc (section);
      if (datasize == 0)
	continue;

      data = (bfd_byte *) xmalloc ((size_t) datasize);

      bfd_get_section_contents (abfd, section, data, 0, datasize);

      aux.sec = section;
      disasm_info.buffer = data;
      disasm_info.buffer_vma = section->vma;
      disasm_info.buffer_length = datasize;
      if (start_address == (bfd_vma) -1
	  || start_address < disasm_info.buffer_vma)
	i = 0;
      else
	i = start_address - disasm_info.buffer_vma;
      if (stop_address == (bfd_vma) -1)
	stop = datasize;
      else
	{
	  if (stop_address < disasm_info.buffer_vma)
	    stop = 0;
	  else
	    stop = stop_address - disasm_info.buffer_vma;
	  if (stop > disasm_info.buffer_length)
	    stop = disasm_info.buffer_length;
	}

      if (prefix_addresses)
	disassemble_bytes (&disasm_info, disassemble_fn, true, data, i, stop,
			   &relpp, relppend);
      else
	{
	  asymbol *sym;
	  long place;

	  sym = find_symbol_for_address (abfd, section, i, true, &place);
	  ++place;
	  while (i < stop)
	    {
	      asymbol *nextsym;
	      long nextstop;
	      boolean insns;

	      disasm_info.symbol = sym;

	      printf ("\n");
	      objdump_print_addr_with_sym (abfd, section, sym,
					   section->vma + i,
					   &disasm_info,
					   false);
	      printf (":\n");

	      if (sym == NULL)
		nextsym = NULL;
	      else
		{
		  while (place < sorted_symcount
			 && (sorted_syms[place]->section != section
			     || (bfd_asymbol_value (sorted_syms[place])
				 <= bfd_asymbol_value (sym))))
		    ++place;
		  if (place >= sorted_symcount)
		    nextsym = NULL;
		  else
		    nextsym = sorted_syms[place];
		}

	      if (nextsym == NULL)
		nextstop = stop;
	      else
		{
		  nextstop = bfd_asymbol_value (nextsym) - section->vma;
		  if (nextstop > stop)
		    nextstop = stop;
		}

	      /* If a symbol is explicitly marked as being an object
                 rather than a function, just dump the bytes without
                 disassembling them.  */
	      if (disassemble_all
		  || sym == NULL
		  || ((sym->flags & BSF_OBJECT) == 0
		      && (strstr (bfd_asymbol_name (sym), "gnu_compiled")
			  == NULL)
		      && (strstr (bfd_asymbol_name (sym), "gcc2_compiled")
			  == NULL))
		  || (sym->flags & BSF_FUNCTION) != 0)
		insns = true;
	      else
		insns = false;

	      disassemble_bytes (&disasm_info, disassemble_fn, insns, data, i,
				 nextstop, &relpp, relppend);

	      i = nextstop;
	      sym = nextsym;
	    }
	}

      free (data);
      if (relbuf != NULL)
	free (relbuf);
    }
  free (sorted_syms);
}
\f

/* Define a table of stab values and print-strings.  We wish the initializer
   could be a direct-mapped table, but instead we build one the first
   time we need it.  */

static void dump_section_stabs PARAMS ((bfd *abfd, char *stabsect_name,
					char *strsect_name));

/* Dump the stabs sections from an object file that has a section that
   uses Sun stabs encoding.  */

static void
dump_stabs (abfd)
     bfd *abfd;
{
  dump_section_stabs (abfd, ".stab", ".stabstr");
  dump_section_stabs (abfd, ".stab.excl", ".stab.exclstr");
  dump_section_stabs (abfd, ".stab.index", ".stab.indexstr");
  dump_section_stabs (abfd, "$GDB_SYMBOLS$", "$GDB_STRINGS$");
}

static bfd_byte *stabs;
static bfd_size_type stab_size;

static char *strtab;
static bfd_size_type stabstr_size;

/* Read ABFD's stabs section STABSECT_NAME into `stabs'
   and string table section STRSECT_NAME into `strtab'.
   If the section exists and was read, allocate the space and return true.
   Otherwise return false.  */

static boolean
read_section_stabs (abfd, stabsect_name, strsect_name)
     bfd *abfd;
     char *stabsect_name;
     char *strsect_name;
{
  asection *stabsect, *stabstrsect;

  stabsect = bfd_get_section_by_name (abfd, stabsect_name);
  if (0 == stabsect)
    {
      printf ("No %s section present\n\n", stabsect_name);
      return false;
    }

  stabstrsect = bfd_get_section_by_name (abfd, strsect_name);
  if (0 == stabstrsect)
    {
      fprintf (stderr, "%s: %s has no %s section\n", program_name,
	       bfd_get_filename (abfd), strsect_name);
      return false;
    }
 
  stab_size    = bfd_section_size (abfd, stabsect);
  stabstr_size = bfd_section_size (abfd, stabstrsect);

  stabs  = (bfd_byte *) xmalloc (stab_size);
  strtab = (char *) xmalloc (stabstr_size);
  
  if (! bfd_get_section_contents (abfd, stabsect, (PTR) stabs, 0, stab_size))
    {
      fprintf (stderr, "%s: Reading %s section of %s failed: %s\n",
	       program_name, stabsect_name, bfd_get_filename (abfd),
	       bfd_errmsg (bfd_get_error ()));
      free (stabs);
      free (strtab);
      return false;
    }

  if (! bfd_get_section_contents (abfd, stabstrsect, (PTR) strtab, 0,
				  stabstr_size))
    {
      fprintf (stderr, "%s: Reading %s section of %s failed: %s\n",
	       program_name, strsect_name, bfd_get_filename (abfd),
	       bfd_errmsg (bfd_get_error ()));
      free (stabs);
      free (strtab);
      return false;
    }

  return true;
}

/* Stabs entries use a 12 byte format:
     4 byte string table index
     1 byte stab type
     1 byte stab other field
     2 byte stab desc field
     4 byte stab value
   FIXME: This will have to change for a 64 bit object format.  */

#define STRDXOFF (0)
#define TYPEOFF (4)
#define OTHEROFF (5)
#define DESCOFF (6)
#define VALOFF (8)
#define STABSIZE (12)

/* Print ABFD's stabs section STABSECT_NAME (in `stabs'),
   using string table section STRSECT_NAME (in `strtab').  */

static void
print_section_stabs (abfd, stabsect_name, strsect_name)
     bfd *abfd;
     char *stabsect_name;
     char *strsect_name;
{
  int i;
  unsigned file_string_table_offset = 0, next_file_string_table_offset = 0;
  bfd_byte *stabp, *stabs_end;

  stabp = stabs;
  stabs_end = stabp + stab_size;

  printf ("Contents of %s section:\n\n", stabsect_name);
  printf ("Symnum n_type n_othr n_desc n_value  n_strx String\n");

  /* Loop through all symbols and print them.

     We start the index at -1 because there is a dummy symbol on
     the front of stabs-in-{coff,elf} sections that supplies sizes.  */

  for (i = -1; stabp < stabs_end; stabp += STABSIZE, i++)
    {
      const char *name;
      unsigned long strx;
      unsigned char type, other;
      unsigned short desc;
      bfd_vma value;

      strx = bfd_h_get_32 (abfd, stabp + STRDXOFF);
      type = bfd_h_get_8 (abfd, stabp + TYPEOFF);
      other = bfd_h_get_8 (abfd, stabp + OTHEROFF);
      desc = bfd_h_get_16 (abfd, stabp + DESCOFF);
      value = bfd_h_get_32 (abfd, stabp + VALOFF);

      printf ("\n%-6d ", i);
      /* Either print the stab name, or, if unnamed, print its number
	 again (makes consistent formatting for tools like awk). */
      name = bfd_get_stab_name (type);
      if (name != NULL)
	printf ("%-6s", name);
      else if (type == N_UNDF)
	printf ("HdrSym");
      else
	printf ("%-6d", type);
      printf (" %-6d %-6d ", other, desc);
      printf_vma (value);
      printf (" %-6lu", strx);

      /* Symbols with type == 0 (N_UNDF) specify the length of the
	 string table associated with this file.  We use that info
	 to know how to relocate the *next* file's string table indices.  */

      if (type == N_UNDF)
	{
	  file_string_table_offset = next_file_string_table_offset;
	  next_file_string_table_offset += value;
	}
      else
	{
	  /* Using the (possibly updated) string table offset, print the
	     string (if any) associated with this symbol.  */

	  if ((strx + file_string_table_offset) < stabstr_size)
	    printf (" %s", &strtab[strx + file_string_table_offset]);
	  else
	    printf (" *");
	}
    }
  printf ("\n\n");
}

static void
dump_section_stabs (abfd, stabsect_name, strsect_name)
     bfd *abfd;
     char *stabsect_name;
     char *strsect_name;
{
  asection *s;

  /* Check for section names for which stabsect_name is a prefix, to
     handle .stab0, etc.  */
  for (s = abfd->sections;
       s != NULL;
       s = s->next)
    {
      int len;

      len = strlen (stabsect_name);

/* If the prefix matches, and the files section name ends with a nul or a digit,
   then we match.  Ie: we want either an exact match or a a section followed by 
   a number.  */
      if (strncmp (stabsect_name, s->name, len) == 0
	  && (s->name[len] == '\000' || isdigit (s->name[len])))
	{
	  if (read_section_stabs (abfd, s->name, strsect_name))
	    {
	      print_section_stabs (abfd, s->name, strsect_name);
	      free (stabs);
	      free (strtab);
	    }
	}
    }
}
\f
static void
dump_bfd_header (abfd)
     bfd *abfd;
{
  char *comma = "";

  printf ("architecture: %s, ",
	  bfd_printable_arch_mach (bfd_get_arch (abfd),
				   bfd_get_mach (abfd)));
  printf ("flags 0x%08x:\n", abfd->flags);

#define PF(x, y)    if (abfd->flags & x) {printf("%s%s", comma, y); comma=", ";}
  PF (HAS_RELOC, "HAS_RELOC");
  PF (EXEC_P, "EXEC_P");
  PF (HAS_LINENO, "HAS_LINENO");
  PF (HAS_DEBUG, "HAS_DEBUG");
  PF (HAS_SYMS, "HAS_SYMS");
  PF (HAS_LOCALS, "HAS_LOCALS");
  PF (DYNAMIC, "DYNAMIC");
  PF (WP_TEXT, "WP_TEXT");
  PF (D_PAGED, "D_PAGED");
  PF (BFD_IS_RELAXABLE, "BFD_IS_RELAXABLE");
  printf ("\nstart address 0x");
  printf_vma (abfd->start_address);
  printf ("\n");
}
\f
static void
dump_bfd_private_header (abfd)
bfd *abfd;
{
  bfd_print_private_bfd_data (abfd, stdout);
}

static void
display_bfd (abfd)
     bfd *abfd;
{
  char **matching;

  if (!bfd_check_format_matches (abfd, bfd_object, &matching))
    {
      bfd_nonfatal (bfd_get_filename (abfd));
      if (bfd_get_error () == bfd_error_file_ambiguously_recognized)
	{
	  list_matching_formats (matching);
	  free (matching);
	}
      return;
    }

  printf ("\n%s:     file format %s\n", bfd_get_filename (abfd),
	  abfd->xvec->name);
  if (dump_ar_hdrs)
    print_arelt_descr (stdout, abfd, true);
  if (dump_file_header)
    dump_bfd_header (abfd);
  if (dump_private_headers)
    dump_bfd_private_header (abfd);
  putchar ('\n');
  if (dump_section_headers)
    dump_headers (abfd);
  if (dump_symtab || dump_reloc_info || disassemble || dump_debugging)
    {
      syms = slurp_symtab (abfd);
    }
  if (dump_dynamic_symtab || dump_dynamic_reloc_info)
    {
      dynsyms = slurp_dynamic_symtab (abfd);
    }
  if (dump_symtab)
    dump_symbols (abfd, false);
  if (dump_dynamic_symtab)
    dump_symbols (abfd, true);
  if (dump_stab_section_info)
    dump_stabs (abfd);
  if (dump_reloc_info && ! disassemble)
    dump_relocs (abfd);
  if (dump_dynamic_reloc_info)
    dump_dynamic_relocs (abfd);
  if (dump_section_contents)
    dump_data (abfd);
  if (disassemble)
    disassemble_data (abfd);
  if (dump_debugging)
    {
      PTR dhandle;

      dhandle = read_debugging_info (abfd, syms, symcount);
      if (dhandle != NULL)
	{
	  if (! print_debugging_info (stdout, dhandle))
	    fprintf (stderr, "%s: printing debugging information failed\n",
		     bfd_get_filename (abfd));
	}
    }
  if (syms)
    {
      free (syms);
      syms = NULL;
    }
  if (dynsyms)
    {
      free (dynsyms);
      dynsyms = NULL;
    }
}

static void
display_file (filename, target)
     char *filename;
     char *target;
{
  bfd *file, *arfile = (bfd *) NULL;

  file = bfd_openr (filename, target);
  if (file == NULL)
    {
      bfd_nonfatal (filename);
      return;
    }

  if (bfd_check_format (file, bfd_archive) == true)
    {
      bfd *last_arfile = NULL;

      printf ("In archive %s:\n", bfd_get_filename (file));
      for (;;)
	{
	  bfd_set_error (bfd_error_no_error);

	  arfile = bfd_openr_next_archived_file (file, arfile);
	  if (arfile == NULL)
	    {
	      if (bfd_get_error () != bfd_error_no_more_archived_files)
		{
		  bfd_nonfatal (bfd_get_filename (file));
		}
	      break;
	    }

	  display_bfd (arfile);

	  if (last_arfile != NULL)
	    bfd_close (last_arfile);
	  last_arfile = arfile;
	}

      if (last_arfile != NULL)
	bfd_close (last_arfile);
    }
  else
    display_bfd (file);

  bfd_close (file);
}
\f
/* Actually display the various requested regions */

static void
dump_data (abfd)
     bfd *abfd;
{
  asection *section;
  bfd_byte *data = 0;
  bfd_size_type datasize = 0;
  bfd_size_type i;
  bfd_size_type start, stop;

  for (section = abfd->sections; section != NULL; section =
       section->next)
    {
      int onaline = 16;

      if (only == (char *) NULL ||
	  strcmp (only, section->name) == 0)
	{
	  if (section->flags & SEC_HAS_CONTENTS)
	    {
	      printf ("Contents of section %s:\n", section->name);

	      if (bfd_section_size (abfd, section) == 0)
		continue;
	      data = (bfd_byte *) xmalloc ((size_t) bfd_section_size (abfd, section));
	      datasize = bfd_section_size (abfd, section);


	      bfd_get_section_contents (abfd, section, (PTR) data, 0, bfd_section_size (abfd, section));

	      if (start_address == (bfd_vma) -1
		  || start_address < section->vma)
		start = 0;
	      else
		start = start_address - section->vma;
	      if (stop_address == (bfd_vma) -1)
		stop = bfd_section_size (abfd, section);
	      else
		{
		  if (stop_address < section->vma)
		    stop = 0;
		  else
		    stop = stop_address - section->vma;
		  if (stop > bfd_section_size (abfd, section))
		    stop = bfd_section_size (abfd, section);
		}
	      for (i = start; i < stop; i += onaline)
		{
		  bfd_size_type j;

		  printf (" %04lx ", (unsigned long int) (i + section->vma));
		  for (j = i; j < i + onaline; j++)
		    {
		      if (j < stop)
			printf ("%02x", (unsigned) (data[j]));
		      else
			printf ("  ");
		      if ((j & 3) == 3)
			printf (" ");
		    }

		  printf (" ");
		  for (j = i; j < i + onaline; j++)
		    {
		      if (j >= stop)
			printf (" ");
		      else
			printf ("%c", isprint (data[j]) ? data[j] : '.');
		    }
		  putchar ('\n');
		}
	      free (data);
	    }
	}
    }
}

/* Should perhaps share code and display with nm? */
static void
dump_symbols (abfd, dynamic)
     bfd *abfd;
     boolean dynamic;
{
  asymbol **current;
  long max;
  long count;

  if (dynamic)
    {
      current = dynsyms;
      max = dynsymcount;
      if (max == 0)
	return;
      printf ("DYNAMIC SYMBOL TABLE:\n");
    }
  else
    {
      current = syms;
      max = symcount;
      if (max == 0)
	return;
      printf ("SYMBOL TABLE:\n");
    }

  for (count = 0; count < max; count++)
    {
      if (*current)
	{
	  bfd *cur_bfd = bfd_asymbol_bfd(*current);
	  if (cur_bfd)
	    {
	      bfd_print_symbol (cur_bfd,
				stdout,
				*current, bfd_print_symbol_all);
	      printf ("\n");
	    }
	}
      current++;
    }
  printf ("\n");
  printf ("\n");
}

static void
dump_relocs (abfd)
     bfd *abfd;
{
  arelent **relpp;
  long relcount;
  asection *a;

  for (a = abfd->sections; a != (asection *) NULL; a = a->next)
    {
      long relsize;

      if (bfd_is_abs_section (a))
	continue;
      if (bfd_is_und_section (a))
	continue;
      if (bfd_is_com_section (a))
	continue;

      if (only)
	{
	  if (strcmp (only, a->name))
	    continue;
	}
      else if ((a->flags & SEC_RELOC) == 0)
	continue;

      relsize = bfd_get_reloc_upper_bound (abfd, a);
      if (relsize < 0)
	bfd_fatal (bfd_get_filename (abfd));

      printf ("RELOCATION RECORDS FOR [%s]:", a->name);

      if (relsize == 0)
	{
	  printf (" (none)\n\n");
	}
      else
	{
	  relpp = (arelent **) xmalloc (relsize);
	  relcount = bfd_canonicalize_reloc (abfd, a, relpp, syms);
	  if (relcount < 0)
	    bfd_fatal (bfd_get_filename (abfd));
	  else if (relcount == 0)
	    {
	      printf (" (none)\n\n");
	    }
	  else
	    {
	      printf ("\n");
	      dump_reloc_set (abfd, a, relpp, relcount);
	      printf ("\n\n");
	    }
	  free (relpp);
	}
    }
}

static void
dump_dynamic_relocs (abfd)
     bfd *abfd;
{
  long relsize;
  arelent **relpp;
  long relcount;

  relsize = bfd_get_dynamic_reloc_upper_bound (abfd);
  if (relsize < 0)
    bfd_fatal (bfd_get_filename (abfd));

  printf ("DYNAMIC RELOCATION RECORDS");

  if (relsize == 0)
    {
      printf (" (none)\n\n");
    }
  else
    {
      relpp = (arelent **) xmalloc (relsize);
      relcount = bfd_canonicalize_dynamic_reloc (abfd, relpp, dynsyms);
      if (relcount < 0)
	bfd_fatal (bfd_get_filename (abfd));
      else if (relcount == 0)
	{
	  printf (" (none)\n\n");
	}
      else
	{
	  printf ("\n");
	  dump_reloc_set (abfd, (asection *) NULL, relpp, relcount);
	  printf ("\n\n");
	}
      free (relpp);
    }
}

static void
dump_reloc_set (abfd, sec, relpp, relcount)
     bfd *abfd;
     asection *sec;
     arelent **relpp;
     long relcount;
{
  arelent **p;
  char *last_filename, *last_functionname;
  unsigned int last_line;

  /* Get column headers lined up reasonably.  */
  {
    static int width;
    if (width == 0)
      {
	char buf[30];
	sprintf_vma (buf, (bfd_vma) -1);
	width = strlen (buf) - 7;
      }
    printf ("OFFSET %*s TYPE %*s VALUE \n", width, "", 12, "");
  }

  last_filename = NULL;
  last_functionname = NULL;
  last_line = 0;

  for (p = relpp; relcount && *p != (arelent *) NULL; p++, relcount--)
    {
      arelent *q = *p;
      const char *filename, *functionname;
      unsigned int line;
      const char *sym_name;
      const char *section_name;

      if (start_address != (bfd_vma) -1
	  && q->address < start_address)
	continue;
      if (stop_address != (bfd_vma) -1
	  && q->address > stop_address)
	continue;

      if (with_line_numbers
	  && sec != NULL
	  && bfd_find_nearest_line (abfd, sec, syms, q->address,
				    &filename, &functionname, &line))
	{
	  if (functionname != NULL
	      && (last_functionname == NULL
		  || strcmp (functionname, last_functionname) != 0))
	    {
	      printf ("%s():\n", functionname);
	      if (last_functionname != NULL)
		free (last_functionname);
	      last_functionname = xstrdup (functionname);
	    }
	  if (line > 0
	      && (line != last_line
		  || (filename != NULL
		      && last_filename != NULL
		      && strcmp (filename, last_filename) != 0)))
	    {
	      printf ("%s:%u\n", filename == NULL ? "???" : filename, line);
	      last_line = line;
	      if (last_filename != NULL)
		free (last_filename);
	      if (filename == NULL)
		last_filename = NULL;
	      else
		last_filename = xstrdup (filename);
	    }
	}

      if (q->sym_ptr_ptr && *q->sym_ptr_ptr)
	{
	  sym_name = (*(q->sym_ptr_ptr))->name;
	  section_name = (*(q->sym_ptr_ptr))->section->name;
	}
      else
	{
	  sym_name = NULL;
	  section_name = NULL;
	}
      if (sym_name)
	{
	  printf_vma (q->address);
	  printf (" %-16s  %s",
		  q->howto->name,
		  sym_name);
	}
      else
	{
	  if (section_name == (CONST char *) NULL)
	    section_name = "*unknown*";
	  printf_vma (q->address);
	  printf (" %-16s  [%s]",
		  q->howto->name,
		  section_name);
	}
      if (q->addend)
	{
	  printf ("+0x");
	  printf_vma (q->addend);
	}
      printf ("\n");
    }
}
\f
/* The length of the longest architecture name + 1.  */
#define LONGEST_ARCH sizeof("rs6000:6000")

static const char *
endian_string (endian)
     enum bfd_endian endian;
{
  if (endian == BFD_ENDIAN_BIG)
    return "big endian";
  else if (endian == BFD_ENDIAN_LITTLE)
    return "little endian";
  else
    return "endianness unknown";
}

/* List the targets that BFD is configured to support, each followed
   by its endianness and the architectures it supports.  */

static void
display_target_list ()
{
  extern bfd_target *bfd_target_vector[];
  char *dummy_name;
  int t;

  dummy_name = choose_temp_base ();
  for (t = 0; bfd_target_vector[t]; t++)
    {
      bfd_target *p = bfd_target_vector[t];
      bfd *abfd = bfd_openw (dummy_name, p->name);
      int a;

      printf ("%s\n (header %s, data %s)\n", p->name,
	      endian_string (p->header_byteorder),
	      endian_string (p->byteorder));

      if (abfd == NULL)
	{
	  bfd_nonfatal (dummy_name);
	  continue;
	}

      if (! bfd_set_format (abfd, bfd_object))
	{
	  if (bfd_get_error () != bfd_error_invalid_operation)
	    bfd_nonfatal (p->name);
	  continue;
	}

      for (a = (int) bfd_arch_obscure + 1; a < (int) bfd_arch_last; a++)
	if (bfd_set_arch_mach (abfd, (enum bfd_architecture) a, 0))
	  printf ("  %s\n",
		  bfd_printable_arch_mach ((enum bfd_architecture) a, 0));
    }
  unlink (dummy_name);
  free (dummy_name);
}

/* Print a table showing which architectures are supported for entries
   FIRST through LAST-1 of bfd_target_vector (targets across,
   architectures down).  */

static void
display_info_table (first, last)
     int first;
     int last;
{
  extern bfd_target *bfd_target_vector[];
  int t, a;
  char *dummy_name;

  /* Print heading of target names.  */
  printf ("\n%*s", (int) LONGEST_ARCH, " ");
  for (t = first; t < last && bfd_target_vector[t]; t++)
    printf ("%s ", bfd_target_vector[t]->name);
  putchar ('\n');

  dummy_name = choose_temp_base ();
  for (a = (int) bfd_arch_obscure + 1; a < (int) bfd_arch_last; a++)
    if (strcmp (bfd_printable_arch_mach (a, 0), "UNKNOWN!") != 0)
      {
	printf ("%*s ", (int) LONGEST_ARCH - 1,
		bfd_printable_arch_mach (a, 0));
	for (t = first; t < last && bfd_target_vector[t]; t++)
	  {
	    bfd_target *p = bfd_target_vector[t];
	    boolean ok = true;
	    bfd *abfd = bfd_openw (dummy_name, p->name);

	    if (abfd == NULL)
	      {
		bfd_nonfatal (p->name);
		ok = false;
	      }

	    if (ok)
	      {
		if (! bfd_set_format (abfd, bfd_object))
		  {
		    if (bfd_get_error () != bfd_error_invalid_operation)
		      bfd_nonfatal (p->name);
		    ok = false;
		  }
	      }

	    if (ok)
	      {
		if (! bfd_set_arch_mach (abfd, a, 0))
		  ok = false;
	      }

	    if (ok)
	      printf ("%s ", p->name);
	    else
	      {
		int l = strlen (p->name);
		while (l--)
		  putchar ('-');
		putchar (' ');
	      }
	  }
	putchar ('\n');
      }
  unlink (dummy_name);
  free (dummy_name);
}

/* Print tables of all the target-architecture combinations that
   BFD has been configured to support.  */

static void
display_target_tables ()
{
  int t, columns;
  extern bfd_target *bfd_target_vector[];
  char *colum;
  extern char *getenv ();

  columns = 0;
  colum = getenv ("COLUMNS");
  if (colum != NULL)
    columns = atoi (colum);
  if (columns == 0)
    columns = 80;

  t = 0;
  while (bfd_target_vector[t] != NULL)
    {
      int oldt = t, wid;

      wid = LONGEST_ARCH + strlen (bfd_target_vector[t]->name) + 1;
      ++t;
      while (wid < columns && bfd_target_vector[t] != NULL)
	{
	  int newwid;

	  newwid = wid + strlen (bfd_target_vector[t]->name) + 1;
	  if (newwid >= columns)
	    break;
	  wid = newwid;
	  ++t;
	}
      display_info_table (oldt, t);
    }
}

static void
display_info ()
{
  printf ("BFD header file version %s\n", BFD_VERSION);
  display_target_list ();
  display_target_tables ();
}

int
main (argc, argv)
     int argc;
     char **argv;
{
  int c;
  char *target = default_target;
  boolean seenflag = false;

  program_name = *argv;
  xmalloc_set_program_name (program_name);

  START_PROGRESS (program_name, 0);

  bfd_init ();

  while ((c = getopt_long (argc, argv, "pib:m:VdDlfahrRtTxsSj:wE:",
			   long_options, (int *) 0))
	 != EOF)
    {
      if (c != 'l' && c != OPTION_START_ADDRESS && c != OPTION_STOP_ADDRESS)
	seenflag = true;
      switch (c)
	{
	case 0:
	  break;		/* we've been given a long option */
	case 'm':
	  machine = optarg;
	  break;
	case 'j':
	  only = optarg;
	  break;
	case 'l':
	  with_line_numbers = 1;
	  break;
	case 'b':
	  target = optarg;
	  break;
	case 'f':
	  dump_file_header = true;
	  break;
	case 'i':
	  formats_info = true;
	  break;
	case 'p':
	  dump_private_headers = 1;
	  break;
	case 'x':
	  dump_private_headers = 1;
	  dump_symtab = 1;
	  dump_reloc_info = 1;
	  dump_file_header = true;
	  dump_ar_hdrs = 1;
	  dump_section_headers = 1;
	  break;
	case 't':
	  dump_symtab = 1;
	  break;
	case 'T':
	  dump_dynamic_symtab = 1;
	  break;
	case 'd':
	  disassemble = true;
	  break;
	case 'D':
	  disassemble = disassemble_all = true;
	  break;
	case 'S':
	  disassemble = true;
	  with_source_code = true;
	  break;
	case 's':
	  dump_section_contents = 1;
	  break;
	case 'r':
	  dump_reloc_info = 1;
	  break;
	case 'R':
	  dump_dynamic_reloc_info = 1;
	  break;
	case 'a':
	  dump_ar_hdrs = 1;
	  break;
	case 'h':
	  dump_section_headers = 1;
	  break;
	case 'H':
	  usage (stdout, 0);
	case 'V':
	  show_version = 1;
	  break;
	case 'w':
	  wide_output = 1;
	  break;
	case OPTION_START_ADDRESS:
	  start_address = parse_vma (optarg, "--start-address");
	  break;
	case OPTION_STOP_ADDRESS:
	  stop_address = parse_vma (optarg, "--stop-address");
	  break;
	case 'E':
	  if (strcmp (optarg, "B") == 0)
	    endian = BFD_ENDIAN_BIG;
	  else if (strcmp (optarg, "L") == 0)
	    endian = BFD_ENDIAN_LITTLE;
	  else
	    {
	      fprintf (stderr, "%s: unrecognized -E option\n", program_name);
	      usage (stderr, 1);
	    }
	  break;
	case OPTION_ENDIAN:
	  if (strncmp (optarg, "big", strlen (optarg)) == 0)
	    endian = BFD_ENDIAN_BIG;
	  else if (strncmp (optarg, "little", strlen (optarg)) == 0)
	    endian = BFD_ENDIAN_LITTLE;
	  else
	    {
	      fprintf (stderr, "%s: unrecognized --endian type `%s'\n",
		      program_name, optarg);
	      usage (stderr, 1);
	    }
	  break;
	default:
	  usage (stderr, 1);
	}
    }

  if (show_version)
    print_version ("objdump");

  if (seenflag == false)
    usage (stderr, 1);

  if (formats_info)
    {
      display_info ();
    }
  else
    {
      if (optind == argc)
	display_file ("a.out", target);
      else
	for (; optind < argc;)
	  display_file (argv[optind++], target);
    }

  END_PROGRESS (program_name);

  return 0;
}