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| Current File : //usr/src/contrib/binutils/binutils/objdump.c |
/* objdump.c -- dump information about an object file.
Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
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, 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
/* Objdump overview.
Objdump displays information about one or more object files, either on
their own, or inside libraries. It is commonly used as a disassembler,
but it can also display information about file headers, symbol tables,
relocations, debugging directives and more.
The flow of execution is as follows:
1. Command line arguments are checked for control switches and the
information to be displayed is selected.
2. Any remaining arguments are assumed to be object files, and they are
processed in order by display_bfd(). If the file is an archive each
of its elements is processed in turn.
3. The file's target architecture and binary file format are determined
by bfd_check_format(). If they are recognised, then dump_bfd() is
called.
4. dump_bfd() in turn calls separate functions to display the requested
item(s) of information(s). For example disassemble_data() is called if
a disassembly has been requested.
When disassembling the code loops through blocks of instructions bounded
by symbols, calling disassemble_bytes() on each block. The actual
disassembling is done by the libopcodes library, via a function pointer
supplied by the disassembler() function. */
#include "sysdep.h"
#include "bfd.h"
#include "progress.h"
#include "bucomm.h"
#include "dwarf.h"
#include "getopt.h"
#include "safe-ctype.h"
#include "dis-asm.h"
#include "libiberty.h"
#include "demangle.h"
#include "debug.h"
#include "budbg.h"
#ifdef HAVE_MMAP
#include <sys/mman.h>
#endif
#include <sys/stat.h>
/* Internal headers for the ELF .stab-dump code - sorry. */
#define BYTES_IN_WORD 32
#include "aout/aout64.h"
/* Exit status. */
static int exit_status = 0;
static char *default_target = NULL; /* Default at runtime. */
/* The following variables are set based on arguments passed on the
command line. */
static int show_version = 0; /* Show the version number. */
static int dump_section_contents; /* -s */
static int dump_section_headers; /* -h */
static bfd_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 bfd_boolean with_source_code; /* -S */
static int show_raw_insn; /* --show-raw-insn */
static int dump_dwarf_section_info; /* --dwarf */
static int dump_stab_section_info; /* --stabs */
static int do_demangle; /* -C, --demangle */
static bfd_boolean disassemble; /* -d */
static bfd_boolean disassemble_all; /* -D */
static int disassemble_zeroes; /* --disassemble-zeroes */
static bfd_boolean formats_info; /* -i */
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 */
static int dump_debugging_tags; /* --debugging-tags */
static int dump_special_syms = 0; /* --special-syms */
static bfd_vma adjust_section_vma = 0; /* --adjust-vma */
static int file_start_context = 0; /* --file-start-context */
/* Pointer to an array of section names provided by
one or more "-j secname" command line options. */
static char **only;
/* The total number of slots in the only[] array. */
static size_t only_size = 0;
/* The number of occupied slots in the only[] array. */
static size_t only_used = 0;
/* Variables for handling include file path table. */
static const char **include_paths;
static int include_path_count;
/* Extra info to pass to the section disassembler and address printing
function. */
struct objdump_disasm_info
{
bfd * abfd;
asection * sec;
bfd_boolean require_sec;
arelent ** dynrelbuf;
long dynrelcount;
disassembler_ftype disassemble_fn;
arelent * reloc;
};
/* Architecture to disassemble for, or default if NULL. */
static char *machine = NULL;
/* Target specific options to the disassembler. */
static char *disassembler_options = 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;
/* The synthetic symbol table. */
static asymbol *synthsyms;
static long synthcount = 0;
/* Number of symbols in `dynsyms'. */
static long dynsymcount = 0;
static bfd_byte *stabs;
static bfd_size_type stab_size;
static char *strtab;
static bfd_size_type stabstr_size;
static void
usage (FILE *stream, int status)
{
fprintf (stream, _("Usage: %s <option(s)> <file(s)>\n"), program_name);
fprintf (stream, _(" Display information from object <file(s)>.\n"));
fprintf (stream, _(" At least one of the following switches must be given:\n"));
fprintf (stream, _("\
-a, --archive-headers Display archive header information\n\
-f, --file-headers Display the contents of the overall file header\n\
-p, --private-headers Display object format specific file header contents\n\
-h, --[section-]headers Display the contents of the section headers\n\
-x, --all-headers Display the contents of all headers\n\
-d, --disassemble Display assembler contents of executable sections\n\
-D, --disassemble-all Display assembler contents of all sections\n\
-S, --source Intermix source code with disassembly\n\
-s, --full-contents Display the full contents of all sections requested\n\
-g, --debugging Display debug information in object file\n\
-e, --debugging-tags Display debug information using ctags style\n\
-G, --stabs Display (in raw form) any STABS info in the file\n\
-W, --dwarf Display DWARF info in the file\n\
-t, --syms Display the contents of the symbol table(s)\n\
-T, --dynamic-syms Display the contents of the dynamic symbol table\n\
-r, --reloc Display the relocation entries in the file\n\
-R, --dynamic-reloc Display the dynamic relocation entries in the file\n\
@<file> Read options from <file>\n\
-v, --version Display this program's version number\n\
-i, --info List object formats and architectures supported\n\
-H, --help Display this information\n\
"));
if (status != 2)
{
fprintf (stream, _("\n The following switches are optional:\n"));
fprintf (stream, _("\
-b, --target=BFDNAME Specify the target object format as BFDNAME\n\
-m, --architecture=MACHINE Specify the target architecture as MACHINE\n\
-j, --section=NAME Only display information for section NAME\n\
-M, --disassembler-options=OPT Pass text OPT on to the disassembler\n\
-EB --endian=big Assume big endian format when disassembling\n\
-EL --endian=little Assume little endian format when disassembling\n\
--file-start-context Include context from start of file (with -S)\n\
-I, --include=DIR Add DIR to search list for source files\n\
-l, --line-numbers Include line numbers and filenames in output\n\
-C, --demangle[=STYLE] Decode mangled/processed symbol names\n\
The STYLE, if specified, can be `auto', `gnu',\n\
`lucid', `arm', `hp', `edg', `gnu-v3', `java'\n\
or `gnat'\n\
-w, --wide Format output for more than 80 columns\n\
-z, --disassemble-zeroes Do not skip blocks of zeroes when disassembling\n\
--start-address=ADDR Only process data whose address is >= ADDR\n\
--stop-address=ADDR Only process data whose address is <= ADDR\n\
--prefix-addresses Print complete address alongside disassembly\n\
--[no-]show-raw-insn Display hex alongside symbolic disassembly\n\
--adjust-vma=OFFSET Add OFFSET to all displayed section addresses\n\
--special-syms Include special symbols in symbol dumps\n\
\n"));
list_supported_targets (program_name, stream);
list_supported_architectures (program_name, stream);
disassembler_usage (stream);
}
if (REPORT_BUGS_TO[0] && status == 0)
fprintf (stream, _("Report bugs to %s.\n"), REPORT_BUGS_TO);
exit (status);
}
/* 150 isn't special; it's just an arbitrary non-ASCII char value. */
enum option_values
{
OPTION_ENDIAN=150,
OPTION_START_ADDRESS,
OPTION_STOP_ADDRESS,
OPTION_ADJUST_VMA
};
static struct option long_options[]=
{
{"adjust-vma", required_argument, NULL, OPTION_ADJUST_VMA},
{"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, NULL, 'g'},
{"debugging-tags", no_argument, NULL, 'e'},
{"demangle", optional_argument, NULL, 'C'},
{"disassemble", no_argument, NULL, 'd'},
{"disassemble-all", no_argument, NULL, 'D'},
{"disassembler-options", required_argument, NULL, 'M'},
{"disassemble-zeroes", no_argument, NULL, 'z'},
{"dynamic-reloc", no_argument, NULL, 'R'},
{"dynamic-syms", no_argument, NULL, 'T'},
{"endian", required_argument, NULL, OPTION_ENDIAN},
{"file-headers", no_argument, NULL, 'f'},
{"file-start-context", no_argument, &file_start_context, 1},
{"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'},
{"no-show-raw-insn", no_argument, &show_raw_insn, -1},
{"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'},
{"special-syms", no_argument, &dump_special_syms, 1},
{"include", required_argument, NULL, 'I'},
{"dwarf", no_argument, NULL, 'W'},
{"stabs", no_argument, NULL, 'G'},
{"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, NULL, 'V'},
{"wide", no_argument, NULL, 'w'},
{0, no_argument, 0, 0}
};
static void
nonfatal (const char *msg)
{
bfd_nonfatal (msg);
exit_status = 1;
}
static void
dump_section_header (bfd *abfd, asection *section,
void *ignored ATTRIBUTE_UNUSED)
{
char *comma = "";
unsigned int opb = bfd_octets_per_byte (abfd);
/* Ignore linker created section. See elfNN_ia64_object_p in
bfd/elfxx-ia64.c. */
if (section->flags & SEC_LINKER_CREATED)
return;
printf ("%3d %-13s %08lx ", section->index,
bfd_get_section_name (abfd, section),
(unsigned long) bfd_section_size (abfd, section) / opb);
bfd_printf_vma (abfd, bfd_get_section_vma (abfd, section));
printf (" ");
bfd_printf_vma (abfd, section->lma);
printf (" %08lx 2**%u", (unsigned long) 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_LOAD, "LOAD");
PF (SEC_RELOC, "RELOC");
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 (bfd_get_arch (abfd) == bfd_arch_tic54x)
{
PF (SEC_TIC54X_BLOCK, "BLOCK");
PF (SEC_TIC54X_CLINK, "CLINK");
}
PF (SEC_SMALL_DATA, "SMALL_DATA");
if (bfd_get_flavour (abfd) == bfd_target_coff_flavour)
PF (SEC_COFF_SHARED, "SHARED");
PF (SEC_THREAD_LOCAL, "THREAD_LOCAL");
PF (SEC_GROUP, "GROUP");
if ((section->flags & SEC_LINK_ONCE) != 0)
{
const char *ls;
struct coff_comdat_info *comdat;
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);
comdat = bfd_coff_get_comdat_section (abfd, section);
if (comdat != NULL)
printf (" (COMDAT %s %ld)", comdat->name, comdat->symbol);
comma = ", ";
}
printf ("\n");
#undef PF
}
static void
dump_headers (bfd *abfd)
{
printf (_("Sections:\n"));
#ifndef BFD64
printf (_("Idx Name Size VMA LMA File off Algn"));
#else
/* With BFD64, non-ELF returns -1 and wants always 64 bit addresses. */
if (bfd_get_arch_size (abfd) == 32)
printf (_("Idx Name Size VMA LMA File off Algn"));
else
printf (_("Idx Name Size VMA LMA File off Algn"));
#endif
if (wide_output)
printf (_(" Flags"));
if (abfd->flags & HAS_LOAD_PAGE)
printf (_(" Pg"));
printf ("\n");
bfd_map_over_sections (abfd, dump_section_header, NULL);
}
static asymbol **
slurp_symtab (bfd *abfd)
{
asymbol **sy = NULL;
long storage;
if (!(bfd_get_file_flags (abfd) & HAS_SYMS))
{
symcount = 0;
return NULL;
}
storage = bfd_get_symtab_upper_bound (abfd);
if (storage < 0)
bfd_fatal (bfd_get_filename (abfd));
if (storage)
sy = xmalloc (storage);
symcount = bfd_canonicalize_symtab (abfd, sy);
if (symcount < 0)
bfd_fatal (bfd_get_filename (abfd));
return sy;
}
/* Read in the dynamic symbols. */
static asymbol **
slurp_dynamic_symtab (bfd *abfd)
{
asymbol **sy = NULL;
long storage;
storage = bfd_get_dynamic_symtab_upper_bound (abfd);
if (storage < 0)
{
if (!(bfd_get_file_flags (abfd) & DYNAMIC))
{
non_fatal (_("%s: not a dynamic object"), bfd_get_filename (abfd));
dynsymcount = 0;
return NULL;
}
bfd_fatal (bfd_get_filename (abfd));
}
if (storage)
sy = xmalloc (storage);
dynsymcount = bfd_canonicalize_dynamic_symtab (abfd, sy);
if (dynsymcount < 0)
bfd_fatal (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 (asymbol **symbols, long count)
{
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 | BSF_SECTION_SYM))
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 (const void *ap, const void *bp)
{
const asymbol *a = * (const asymbol **) ap;
const asymbol *b = * (const asymbol **) bp;
const char *an;
const char *bn;
size_t anl;
size_t bnl;
bfd_boolean af;
bfd_boolean bf;
flagword aflags;
flagword 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 (const void *ap, const void *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 an address (VMA) to the output stream in INFO.
If SKIP_ZEROES is TRUE, omit leading zeroes. */
static void
objdump_print_value (bfd_vma vma, struct disassemble_info *info,
bfd_boolean skip_zeroes)
{
char buf[30];
char *p;
struct objdump_disasm_info *aux;
aux = (struct objdump_disasm_info *) info->application_data;
bfd_sprintf_vma (aux->abfd, 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);
}
/* Print the name of a symbol. */
static void
objdump_print_symname (bfd *abfd, struct disassemble_info *info,
asymbol *sym)
{
char *alloc;
const char *name;
alloc = NULL;
name = bfd_asymbol_name (sym);
if (do_demangle && name[0] != '\0')
{
/* Demangle the name. */
alloc = bfd_demangle (abfd, name, DMGL_ANSI | DMGL_PARAMS);
if (alloc != NULL)
name = alloc;
}
if (info != NULL)
(*info->fprintf_func) (info->stream, "%s", name);
else
printf ("%s", name);
if (alloc != NULL)
free (alloc);
}
/* Locate a symbol given a bfd and a section (from INFO->application_data),
and a VMA. If INFO->application_data->require_sec is TRUE, then always
require the symbol to be in the section. 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 (bfd_vma vma,
struct disassemble_info *info,
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;
struct objdump_disasm_info *aux;
bfd *abfd;
asection *sec;
unsigned int opb;
bfd_boolean want_section;
if (sorted_symcount < 1)
return NULL;
aux = (struct objdump_disasm_info *) info->application_data;
abfd = aux->abfd;
sec = aux->sec;
opb = bfd_octets_per_byte (abfd);
/* 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 relocatable, 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.
Also give the target a chance to reject symbols. */
want_section = (aux->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) / opb)));
if ((sorted_syms[thisplace]->section != sec && want_section)
|| !info->symbol_is_valid (sorted_syms[thisplace], info))
{
long i;
long newplace;
for (i = thisplace + 1; i < sorted_symcount; i++)
{
if (bfd_asymbol_value (sorted_syms[i])
!= bfd_asymbol_value (sorted_syms[thisplace]))
break;
}
--i;
newplace = sorted_symcount;
for (; i >= 0; i--)
{
if ((sorted_syms[i]->section == sec || !want_section)
&& info->symbol_is_valid (sorted_syms[i], info))
{
if (newplace == sorted_symcount)
newplace = i;
if (bfd_asymbol_value (sorted_syms[i])
!= bfd_asymbol_value (sorted_syms[newplace]))
break;
/* Remember this symbol and keep searching until we reach
an earlier address. */
newplace = i;
}
}
if (newplace != sorted_symcount)
thisplace = newplace;
else
{
/* 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 || !want_section)
&& info->symbol_is_valid (sorted_syms[i], info))
{
thisplace = i;
break;
}
}
}
if ((sorted_syms[thisplace]->section != sec && want_section)
|| !info->symbol_is_valid (sorted_syms[thisplace], info))
/* There is no suitable symbol. */
return NULL;
}
if (place != NULL)
*place = thisplace;
return sorted_syms[thisplace];
}
/* Print an address and the offset to the nearest symbol. */
static void
objdump_print_addr_with_sym (bfd *abfd, asection *sec, asymbol *sym,
bfd_vma vma, struct disassemble_info *info,
bfd_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, "-0x");
objdump_print_value (secaddr - vma, info, TRUE);
}
else if (vma > secaddr)
{
(*info->fprintf_func) (info->stream, "+0x");
objdump_print_value (vma - secaddr, info, TRUE);
}
(*info->fprintf_func) (info->stream, ">");
}
else
{
(*info->fprintf_func) (info->stream, " <");
objdump_print_symname (abfd, info, sym);
if (bfd_asymbol_value (sym) > vma)
{
(*info->fprintf_func) (info->stream, "-0x");
objdump_print_value (bfd_asymbol_value (sym) - vma, info, TRUE);
}
else if (vma > bfd_asymbol_value (sym))
{
(*info->fprintf_func) (info->stream, "+0x");
objdump_print_value (vma - bfd_asymbol_value (sym), info, TRUE);
}
(*info->fprintf_func) (info->stream, ">");
}
}
/* Print an address (VMA), symbolically if possible.
If SKIP_ZEROES is TRUE, don't output leading zeroes. */
static void
objdump_print_addr (bfd_vma vma,
struct disassemble_info *info,
bfd_boolean skip_zeroes)
{
struct objdump_disasm_info *aux;
asymbol *sym = NULL; /* Initialize to avoid compiler warning. */
bfd_boolean skip_find = FALSE;
if (sorted_symcount < 1)
{
(*info->fprintf_func) (info->stream, "0x");
objdump_print_value (vma, info, skip_zeroes);
return;
}
aux = (struct objdump_disasm_info *) info->application_data;
if (aux->reloc != NULL
&& aux->reloc->sym_ptr_ptr != NULL
&& * aux->reloc->sym_ptr_ptr != NULL)
{
sym = * aux->reloc->sym_ptr_ptr;
/* Adjust the vma to the reloc. */
vma += bfd_asymbol_value (sym);
if (bfd_is_und_section (bfd_get_section (sym)))
skip_find = TRUE;
}
if (!skip_find)
sym = find_symbol_for_address (vma, info, 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 (bfd_vma vma, struct disassemble_info *info)
{
objdump_print_addr (vma, info, ! prefix_addresses);
}
/* Determine if the given address has a symbol associated with it. */
static int
objdump_symbol_at_address (bfd_vma vma, struct disassemble_info * info)
{
asymbol * sym;
sym = find_symbol_for_address (vma, info, NULL);
return (sym != NULL && (bfd_asymbol_value (sym) == vma));
}
/* 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
disassembly 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;
const char *filename;
const char *modname;
const char *map;
size_t mapsize;
const char **linemap;
unsigned maxline;
unsigned last_line;
int first;
};
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)
/* Read a complete file into memory. */
static const char *
slurp_file (const char *fn, size_t *size)
{
#ifdef HAVE_MMAP
int ps = getpagesize ();
size_t msize;
#endif
const char *map;
struct stat st;
int fd = open (fn, O_RDONLY);
if (fd < 0)
return NULL;
if (fstat (fd, &st) < 0)
return NULL;
*size = st.st_size;
#ifdef HAVE_MMAP
msize = (*size + ps - 1) & ~(ps - 1);
map = mmap (NULL, msize, PROT_READ, MAP_SHARED, fd, 0);
if (map != (char *)-1L)
{
close(fd);
return map;
}
#endif
map = malloc (*size);
if (!map || (size_t) read (fd, (char *)map, *size) != *size)
{
free ((void *)map);
map = NULL;
}
close (fd);
return map;
}
#define line_map_decrease 5
/* Precompute array of lines for a mapped file. */
static const char **
index_file (const char *map, size_t size, unsigned int *maxline)
{
const char *p, *lstart, *end;
int chars_per_line = 45; /* First iteration will use 40. */
unsigned int lineno;
const char **linemap = NULL;
unsigned long line_map_size = 0;
lineno = 0;
lstart = map;
end = map + size;
for (p = map; p < end; p++)
{
if (*p == '\n')
{
if (p + 1 < end && p[1] == '\r')
p++;
}
else if (*p == '\r')
{
if (p + 1 < end && p[1] == '\n')
p++;
}
else
continue;
/* End of line found. */
if (linemap == NULL || line_map_size < lineno + 1)
{
unsigned long newsize;
chars_per_line -= line_map_decrease;
if (chars_per_line <= 1)
chars_per_line = 1;
line_map_size = size / chars_per_line + 1;
if (line_map_size < lineno + 1)
line_map_size = lineno + 1;
newsize = line_map_size * sizeof (char *);
linemap = xrealloc (linemap, newsize);
}
linemap[lineno++] = lstart;
lstart = p + 1;
}
*maxline = lineno;
return linemap;
}
/* Tries to open MODNAME, and if successful adds a node to print_files
linked list and returns that node. Returns NULL on failure. */
static struct print_file_list *
try_print_file_open (const char *origname, const char *modname)
{
struct print_file_list *p;
p = xmalloc (sizeof (struct print_file_list));
p->map = slurp_file (modname, &p->mapsize);
if (p->map == NULL)
{
free (p);
return NULL;
}
p->linemap = index_file (p->map, p->mapsize, &p->maxline);
p->last_line = 0;
p->filename = origname;
p->modname = modname;
p->next = print_files;
p->first = 1;
print_files = p;
return p;
}
/* If the the source file, as described in the symtab, is not found
try to locate it in one of the paths specified with -I
If found, add location to print_files linked list. */
static struct print_file_list *
update_source_path (const char *filename)
{
struct print_file_list *p;
const char *fname;
int i;
if (filename == NULL)
return NULL;
p = try_print_file_open (filename, filename);
if (p != NULL)
return p;
if (include_path_count == 0)
return NULL;
/* Get the name of the file. */
fname = strrchr (filename, '/');
#ifdef HAVE_DOS_BASED_FILE_SYSTEM
{
/* We could have a mixed forward/back slash case. */
char *backslash = strrchr (filename, '\\');
if (fname == NULL || (backslash != NULL && backslash > fname))
fname = backslash;
if (fname == NULL && filename[0] != '\0' && filename[1] == ':')
fname = filename + 1;
}
#endif
if (fname == NULL)
fname = filename;
else
++fname;
/* If file exists under a new path, we need to add it to the list
so that show_line knows about it. */
for (i = 0; i < include_path_count; i++)
{
char *modname = concat (include_paths[i], "/", fname, (const char *) 0);
p = try_print_file_open (filename, modname);
if (p)
return p;
free (modname);
}
return NULL;
}
/* Print a source file line. */
static void
print_line (struct print_file_list *p, unsigned int line)
{
const char *l;
--line;
if (line >= p->maxline)
return;
l = p->linemap [line];
fwrite (l, 1, strcspn (l, "\n\r"), stdout);
putchar ('\n');
}
/* Print a range of source code lines. */
static void
dump_lines (struct print_file_list *p, unsigned int start, unsigned int end)
{
if (p->map == NULL)
return;
while (start <= end)
{
print_line (p, start);
start++;
}
}
/* Show the line number, or the source line, in a disassembly
listing. */
static void
show_line (bfd *abfd, asection *section, bfd_vma addr_offset)
{
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, addr_offset, &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;
unsigned l;
for (pp = &print_files; *pp != NULL; pp = &(*pp)->next)
if (strcmp ((*pp)->filename, filename) == 0)
break;
p = *pp;
if (p == NULL)
p = update_source_path (filename);
if (p != NULL && line != p->last_line)
{
if (file_start_context && p->first)
l = 1;
else
{
l = line - SHOW_PRECEDING_CONTEXT_LINES;
if (l >= line)
l = 1;
if (p->last_line >= l && p->last_line <= line)
l = p->last_line + 1;
}
dump_lines (p, l, line);
p->last_line = line;
p->first = 0;
}
}
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;
size_t pos;
size_t alloc;
} SFILE;
/* sprintf to a "stream". */
static int ATTRIBUTE_PRINTF_2
objdump_sprintf (SFILE *f, const char *format, ...)
{
size_t n;
va_list args;
while (1)
{
size_t space = f->alloc - f->pos;
va_start (args, format);
n = vsnprintf (f->buffer + f->pos, space, format, args);
va_end (args);
if (space > n)
break;
f->alloc = (f->alloc + n) * 2;
f->buffer = xrealloc (f->buffer, f->alloc);
}
f->pos += n;
return n;
}
/* Returns TRUE if the specified section should be dumped. */
static bfd_boolean
process_section_p (asection * section)
{
size_t i;
if (only == NULL)
return TRUE;
for (i = 0; i < only_used; i++)
if (strcmp (only [i], section->name) == 0)
return TRUE;
return FALSE;
}
/* The number of zeroes we want to see before we start skipping them.
The number is arbitrarily chosen. */
#define DEFAULT_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 DEFAULT_SKIP_ZEROES_AT_END 3
/* Disassemble some data in memory between given values. */
static void
disassemble_bytes (struct disassemble_info * info,
disassembler_ftype disassemble_fn,
bfd_boolean insns,
bfd_byte * data,
bfd_vma start_offset,
bfd_vma stop_offset,
bfd_vma rel_offset,
arelent *** relppp,
arelent ** relppend)
{
struct objdump_disasm_info *aux;
asection *section;
int octets_per_line;
bfd_boolean done_dot;
int skip_addr_chars;
bfd_vma addr_offset;
unsigned int opb = info->octets_per_byte;
unsigned int skip_zeroes = info->skip_zeroes;
unsigned int skip_zeroes_at_end = info->skip_zeroes_at_end;
int octets = opb;
SFILE sfile;
aux = (struct objdump_disasm_info *) info->application_data;
section = aux->sec;
sfile.alloc = 120;
sfile.buffer = xmalloc (sfile.alloc);
sfile.pos = 0;
if (insns)
octets_per_line = 4;
else
octets_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;
bfd_sprintf_vma
(aux->abfd, buf,
(section->vma
+ bfd_section_size (section->owner, section) / opb));
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;
addr_offset = start_offset;
while (addr_offset < stop_offset)
{
bfd_vma z;
bfd_boolean need_nl = FALSE;
int previous_octets;
/* Remember the length of the previous instruction. */
previous_octets = octets;
octets = 0;
/* If we see more than SKIP_ZEROES octets of zeroes, we just
print `...'. */
for (z = addr_offset * opb; z < stop_offset * opb; z++)
if (data[z] != 0)
break;
if (! disassemble_zeroes
&& (info->insn_info_valid == 0
|| info->branch_delay_insns == 0)
&& (z - addr_offset * opb >= skip_zeroes
|| (z == stop_offset * opb &&
z - addr_offset * opb < skip_zeroes_at_end)))
{
printf ("\t...\n");
/* If there are more nonzero octets 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_offset * opb)
z = addr_offset * opb + ((z - addr_offset * opb) &~ 3);
octets = z - addr_offset * opb;
}
else
{
char buf[50];
int bpc = 0;
int pb = 0;
done_dot = FALSE;
if (with_line_numbers || with_source_code)
show_line (aux->abfd, section, addr_offset);
if (! prefix_addresses)
{
char *s;
bfd_sprintf_vma (aux->abfd, buf, section->vma + addr_offset);
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 + addr_offset, info);
aux->require_sec = FALSE;
putchar (' ');
}
if (insns)
{
sfile.pos = 0;
info->fprintf_func = (fprintf_ftype) objdump_sprintf;
info->stream = &sfile;
info->bytes_per_line = 0;
info->bytes_per_chunk = 0;
info->flags = 0;
if (info->disassembler_needs_relocs
&& (bfd_get_file_flags (aux->abfd) & EXEC_P) == 0
&& (bfd_get_file_flags (aux->abfd) & DYNAMIC) == 0
&& *relppp < relppend)
{
bfd_signed_vma distance_to_rel;
distance_to_rel = (**relppp)->address
- (rel_offset + addr_offset);
/* Check to see if the current reloc is associated with
the instruction that we are about to disassemble. */
if (distance_to_rel == 0
/* FIXME: This is wrong. We are trying to catch
relocs that are addressed part way through the
current instruction, as might happen with a packed
VLIW instruction. Unfortunately we do not know the
length of the current instruction since we have not
disassembled it yet. Instead we take a guess based
upon the length of the previous instruction. The
proper solution is to have a new target-specific
disassembler function which just returns the length
of an instruction at a given address without trying
to display its disassembly. */
|| (distance_to_rel > 0
&& distance_to_rel < (bfd_signed_vma) (previous_octets/ opb)))
{
info->flags = INSN_HAS_RELOC;
aux->reloc = **relppp;
}
else
aux->reloc = NULL;
}
octets = (*disassemble_fn) (section->vma + addr_offset, info);
info->fprintf_func = (fprintf_ftype) fprintf;
info->stream = stdout;
if (info->bytes_per_line != 0)
octets_per_line = info->bytes_per_line;
if (octets < 0)
{
if (sfile.pos)
printf ("%s\n", sfile.buffer);
break;
}
}
else
{
bfd_vma j;
octets = octets_per_line;
if (addr_offset + octets / opb > stop_offset)
octets = (stop_offset - addr_offset) * opb;
for (j = addr_offset * opb; j < addr_offset * opb + octets; ++j)
{
if (ISPRINT (data[j]))
buf[j - addr_offset * opb] = data[j];
else
buf[j - addr_offset * opb] = '.';
}
buf[j - addr_offset * opb] = '\0';
}
if (prefix_addresses
? show_raw_insn > 0
: show_raw_insn >= 0)
{
bfd_vma j;
/* If ! prefix_addresses and ! wide_output, we print
octets_per_line octets per line. */
pb = octets;
if (pb > octets_per_line && ! prefix_addresses && ! wide_output)
pb = octets_per_line;
if (info->bytes_per_chunk)
bpc = info->bytes_per_chunk;
else
bpc = 1;
for (j = addr_offset * opb; j < addr_offset * opb + 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 < octets_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 (" ");
}
if (! insns)
printf ("%s", buf);
else if (sfile.pos)
printf ("%s", sfile.buffer);
if (prefix_addresses
? show_raw_insn > 0
: show_raw_insn >= 0)
{
while (pb < octets)
{
bfd_vma j;
char *s;
putchar ('\n');
j = addr_offset * opb + pb;
bfd_sprintf_vma (aux->abfd, buf, section->vma + j / opb);
for (s = buf + skip_addr_chars; *s == '0'; s++)
*s = ' ';
if (*s == '\0')
*--s = '0';
printf ("%s:\t", buf + skip_addr_chars);
pb += octets_per_line;
if (pb > octets)
pb = octets;
for (; j < addr_offset * opb + 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;
}
while ((*relppp) < relppend
&& (**relppp)->address < rel_offset + addr_offset + octets / opb)
{
if (dump_reloc_info || dump_dynamic_reloc_info)
{
arelent *q;
q = **relppp;
if (wide_output)
putchar ('\t');
else
printf ("\t\t\t");
objdump_print_value (section->vma - rel_offset + q->address,
info, TRUE);
if (q->howto == NULL)
printf (": *unknown*\t");
else if (q->howto->name)
printf (": %s\t", q->howto->name);
else
printf (": %d\t", q->howto->type);
if (q->sym_ptr_ptr == NULL || *q->sym_ptr_ptr == NULL)
printf ("*unknown*");
else
{
const char *sym_name;
sym_name = bfd_asymbol_name (*q->sym_ptr_ptr);
if (sym_name != NULL && *sym_name != '\0')
objdump_print_symname (aux->abfd, info, *q->sym_ptr_ptr);
else
{
asection *sym_sec;
sym_sec = bfd_get_section (*q->sym_ptr_ptr);
sym_name = bfd_get_section_name (aux->abfd, sym_sec);
if (sym_name == NULL || *sym_name == '\0')
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");
addr_offset += octets / opb;
}
free (sfile.buffer);
}
static void
disassemble_section (bfd *abfd, asection *section, void *info)
{
struct disassemble_info * pinfo = (struct disassemble_info *) info;
struct objdump_disasm_info * paux;
unsigned int opb = pinfo->octets_per_byte;
bfd_byte * data = NULL;
bfd_size_type datasize = 0;
arelent ** rel_pp = NULL;
arelent ** rel_ppstart = NULL;
arelent ** rel_ppend;
unsigned long stop_offset;
asymbol * sym = NULL;
long place = 0;
long rel_count;
bfd_vma rel_offset;
unsigned long addr_offset;
/* Sections that do not contain machine
code are not normally disassembled. */
if (! disassemble_all
&& only == NULL
&& ((section->flags & (SEC_CODE | SEC_HAS_CONTENTS))
!= (SEC_CODE | SEC_HAS_CONTENTS)))
return;
if (! process_section_p (section))
return;
datasize = bfd_get_section_size (section);
if (datasize == 0)
return;
/* Decide which set of relocs to use. Load them if necessary. */
paux = (struct objdump_disasm_info *) pinfo->application_data;
if (paux->dynrelbuf)
{
rel_pp = paux->dynrelbuf;
rel_count = paux->dynrelcount;
/* Dynamic reloc addresses are absolute, non-dynamic are section
relative. REL_OFFSET specifies the reloc address corresponding
to the start of this section. */
rel_offset = section->vma;
}
else
{
rel_count = 0;
rel_pp = NULL;
rel_offset = 0;
if ((section->flags & SEC_RELOC) != 0
&& (dump_reloc_info || pinfo->disassembler_needs_relocs))
{
long relsize;
relsize = bfd_get_reloc_upper_bound (abfd, section);
if (relsize < 0)
bfd_fatal (bfd_get_filename (abfd));
if (relsize > 0)
{
rel_ppstart = rel_pp = xmalloc (relsize);
rel_count = bfd_canonicalize_reloc (abfd, section, rel_pp, syms);
if (rel_count < 0)
bfd_fatal (bfd_get_filename (abfd));
/* Sort the relocs by address. */
qsort (rel_pp, rel_count, sizeof (arelent *), compare_relocs);
}
}
}
rel_ppend = rel_pp + rel_count;
data = xmalloc (datasize);
bfd_get_section_contents (abfd, section, data, 0, datasize);
paux->sec = section;
pinfo->buffer = data;
pinfo->buffer_vma = section->vma;
pinfo->buffer_length = datasize;
pinfo->section = section;
if (start_address == (bfd_vma) -1
|| start_address < pinfo->buffer_vma)
addr_offset = 0;
else
addr_offset = start_address - pinfo->buffer_vma;
if (stop_address == (bfd_vma) -1)
stop_offset = datasize / opb;
else
{
if (stop_address < pinfo->buffer_vma)
stop_offset = 0;
else
stop_offset = stop_address - pinfo->buffer_vma;
if (stop_offset > pinfo->buffer_length / opb)
stop_offset = pinfo->buffer_length / opb;
}
/* Skip over the relocs belonging to addresses below the
start address. */
while (rel_pp < rel_ppend
&& (*rel_pp)->address < rel_offset + addr_offset)
++rel_pp;
printf (_("Disassembly of section %s:\n"), section->name);
/* Find the nearest symbol forwards from our current position. */
paux->require_sec = TRUE;
sym = find_symbol_for_address (section->vma + addr_offset, info, &place);
paux->require_sec = FALSE;
/* Disassemble a block of instructions up to the address associated with
the symbol we have just found. Then print the symbol and find the
next symbol on. Repeat until we have disassembled the entire section
or we have reached the end of the address range we are interested in. */
while (addr_offset < stop_offset)
{
bfd_vma addr;
asymbol *nextsym;
unsigned long nextstop_offset;
bfd_boolean insns;
addr = section->vma + addr_offset;
if (sym != NULL && bfd_asymbol_value (sym) <= addr)
{
int x;
for (x = place;
(x < sorted_symcount
&& (bfd_asymbol_value (sorted_syms[x]) <= addr));
++x)
continue;
pinfo->symbols = sorted_syms + place;
pinfo->num_symbols = x - place;
pinfo->symtab_pos = place;
}
else
{
pinfo->symbols = NULL;
pinfo->num_symbols = 0;
pinfo->symtab_pos = -1;
}
if (! prefix_addresses)
{
pinfo->fprintf_func (pinfo->stream, "\n");
objdump_print_addr_with_sym (abfd, section, sym, addr,
pinfo, FALSE);
pinfo->fprintf_func (pinfo->stream, ":\n");
}
if (sym != NULL && bfd_asymbol_value (sym) > addr)
nextsym = sym;
else if (sym == NULL)
nextsym = NULL;
else
{
#define is_valid_next_sym(SYM) \
((SYM)->section == section \
&& (bfd_asymbol_value (SYM) > bfd_asymbol_value (sym)) \
&& pinfo->symbol_is_valid (SYM, pinfo))
/* Search forward for the next appropriate symbol in
SECTION. Note that all the symbols are sorted
together into one big array, and that some sections
may have overlapping addresses. */
while (place < sorted_symcount
&& ! is_valid_next_sym (sorted_syms [place]))
++place;
if (place >= sorted_symcount)
nextsym = NULL;
else
nextsym = sorted_syms[place];
}
if (sym != NULL && bfd_asymbol_value (sym) > addr)
nextstop_offset = bfd_asymbol_value (sym) - section->vma;
else if (nextsym == NULL)
nextstop_offset = stop_offset;
else
nextstop_offset = bfd_asymbol_value (nextsym) - section->vma;
if (nextstop_offset > stop_offset)
nextstop_offset = stop_offset;
/* 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
|| bfd_asymbol_value (sym) > addr
|| ((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 (pinfo, paux->disassemble_fn, insns, data,
addr_offset, nextstop_offset,
rel_offset, &rel_pp, rel_ppend);
addr_offset = nextstop_offset;
sym = nextsym;
}
free (data);
if (rel_ppstart != NULL)
free (rel_ppstart);
}
/* Disassemble the contents of an object file. */
static void
disassemble_data (bfd *abfd)
{
struct disassemble_info disasm_info;
struct objdump_disasm_info aux;
long i;
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_symcount = symcount ? symcount : dynsymcount;
sorted_syms = xmalloc ((sorted_symcount + synthcount) * sizeof (asymbol *));
memcpy (sorted_syms, symcount ? syms : dynsyms,
sorted_symcount * sizeof (asymbol *));
sorted_symcount = remove_useless_symbols (sorted_syms, sorted_symcount);
for (i = 0; i < synthcount; ++i)
{
sorted_syms[sorted_symcount] = synthsyms + i;
++sorted_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_ftype) fprintf);
disasm_info.application_data = (void *) &aux;
aux.abfd = abfd;
aux.require_sec = FALSE;
aux.dynrelbuf = NULL;
aux.dynrelcount = 0;
aux.reloc = NULL;
disasm_info.print_address_func = objdump_print_address;
disasm_info.symbol_at_address_func = objdump_symbol_at_address;
if (machine != NULL)
{
const bfd_arch_info_type *info = bfd_scan_arch (machine);
if (info == NULL)
fatal (_("Can't use supplied machine %s"), machine);
abfd->arch_info = info;
}
if (endian != BFD_ENDIAN_UNKNOWN)
{
struct bfd_target *xvec;
xvec = xmalloc (sizeof (struct bfd_target));
memcpy (xvec, abfd->xvec, sizeof (struct bfd_target));
xvec->byteorder = endian;
abfd->xvec = xvec;
}
/* Use libopcodes to locate a suitable disassembler. */
aux.disassemble_fn = disassembler (abfd);
if (!aux.disassemble_fn)
{
non_fatal (_("Can't disassemble for architecture %s\n"),
bfd_printable_arch_mach (bfd_get_arch (abfd), 0));
exit_status = 1;
return;
}
disasm_info.flavour = bfd_get_flavour (abfd);
disasm_info.arch = bfd_get_arch (abfd);
disasm_info.mach = bfd_get_mach (abfd);
disasm_info.disassembler_options = disassembler_options;
disasm_info.octets_per_byte = bfd_octets_per_byte (abfd);
disasm_info.skip_zeroes = DEFAULT_SKIP_ZEROES;
disasm_info.skip_zeroes_at_end = DEFAULT_SKIP_ZEROES_AT_END;
disasm_info.disassembler_needs_relocs = FALSE;
if (bfd_big_endian (abfd))
disasm_info.display_endian = disasm_info.endian = BFD_ENDIAN_BIG;
else if (bfd_little_endian (abfd))
disasm_info.display_endian = 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;
/* Allow the target to customize the info structure. */
disassemble_init_for_target (& disasm_info);
/* Pre-load the dynamic relocs if we are going
to be dumping them along with the disassembly. */
if (dump_dynamic_reloc_info)
{
long relsize = bfd_get_dynamic_reloc_upper_bound (abfd);
if (relsize < 0)
bfd_fatal (bfd_get_filename (abfd));
if (relsize > 0)
{
aux.dynrelbuf = xmalloc (relsize);
aux.dynrelcount = bfd_canonicalize_dynamic_reloc (abfd,
aux.dynrelbuf,
dynsyms);
if (aux.dynrelcount < 0)
bfd_fatal (bfd_get_filename (abfd));
/* Sort the relocs by address. */
qsort (aux.dynrelbuf, aux.dynrelcount, sizeof (arelent *),
compare_relocs);
}
}
disasm_info.symtab = sorted_syms;
disasm_info.symtab_size = sorted_symcount;
bfd_map_over_sections (abfd, disassemble_section, & disasm_info);
if (aux.dynrelbuf != NULL)
free (aux.dynrelbuf);
free (sorted_syms);
}
int
load_debug_section (enum dwarf_section_display_enum debug, void *file)
{
struct dwarf_section *section = &debug_displays [debug].section;
bfd *abfd = file;
asection *sec;
bfd_boolean ret;
/* If it is already loaded, do nothing. */
if (section->start != NULL)
return 1;
/* Locate the debug section. */
sec = bfd_get_section_by_name (abfd, section->name);
if (sec == NULL)
return 0;
/* Compute a bias to be added to offsets found within the DWARF debug
information. These offsets are meant to be relative to the start of
the dwarf section, and hence the bias should be 0. For MACH-O however
a dwarf section is really just a region of a much larger section and so
the bias is the address of the start of that area within the larger
section. This test is important for PE and COFF based targets which
use DWARF debug information, since unlike ELF, they do not allow the
dwarf sections to be placed at address 0. */
if (bfd_get_flavour (abfd) == bfd_target_mach_o_flavour)
section->address = bfd_get_section_vma (abfd, sec);
else
section->address = 0;
section->size = bfd_get_section_size (sec);
section->start = xmalloc (section->size);
if (is_relocatable && debug_displays [debug].relocate)
ret = bfd_simple_get_relocated_section_contents (abfd,
sec,
section->start,
syms) != NULL;
else
ret = bfd_get_section_contents (abfd, sec, section->start, 0,
section->size);
if (!ret)
{
free_debug_section (debug);
printf (_("\nCan't get contents for section '%s'.\n"),
section->name);
}
return ret;
}
void
free_debug_section (enum dwarf_section_display_enum debug)
{
struct dwarf_section *section = &debug_displays [debug].section;
if (section->start == NULL)
return;
free ((char *) section->start);
section->start = NULL;
section->address = 0;
section->size = 0;
}
static void
dump_dwarf_section (bfd *abfd, asection *section,
void *arg ATTRIBUTE_UNUSED)
{
const char *name = bfd_get_section_name (abfd, section);
const char *match;
enum dwarf_section_display_enum i;
if (CONST_STRNEQ (name, ".gnu.linkonce.wi."))
match = ".debug_info";
else
match = name;
for (i = 0; i < max; i++)
if (strcmp (debug_displays[i].section.name, match) == 0)
{
if (!debug_displays[i].eh_frame)
{
struct dwarf_section *sec = &debug_displays [i].section;
if (load_debug_section (i, abfd))
{
debug_displays[i].display (sec, abfd);
if (i != info && i != abbrev)
free_debug_section (i);
}
}
break;
}
}
static const char *mach_o_dwarf_sections [] = {
"LC_SEGMENT.__DWARFA.__debug_abbrev", /* .debug_abbrev */
"LC_SEGMENT.__DWARFA.__debug_aranges", /* .debug_aranges */
"LC_SEGMENT.__DWARFA.__debug_frame", /* .debug_frame */
"LC_SEGMENT.__DWARFA.__debug_info", /* .debug_info */
"LC_SEGMENT.__DWARFA.__debug_line", /* .debug_line */
"LC_SEGMENT.__DWARFA.__debug_pubnames", /* .debug_pubnames */
".eh_frame", /* .eh_frame */
"LC_SEGMENT.__DWARFA.__debug_macinfo", /* .debug_macinfo */
"LC_SEGMENT.__DWARFA.__debug_str", /* .debug_str */
"LC_SEGMENT.__DWARFA.__debug_loc", /* .debug_loc */
"LC_SEGMENT.__DWARFA.__debug_pubtypes", /* .debug_pubtypes */
"LC_SEGMENT.__DWARFA.__debug_ranges", /* .debug_ranges */
"LC_SEGMENT.__DWARFA.__debug_static_func", /* .debug_static_func */
"LC_SEGMENT.__DWARFA.__debug_static_vars", /* .debug_static_vars */
"LC_SEGMENT.__DWARFA.__debug_types", /* .debug_types */
"LC_SEGMENT.__DWARFA.__debug_weaknames" /* .debug_weaknames */
};
static const char *generic_dwarf_sections [max];
static void
check_mach_o_dwarf (bfd *abfd)
{
static enum bfd_flavour old_flavour = bfd_target_unknown_flavour;
enum bfd_flavour current_flavour = bfd_get_flavour (abfd);
enum dwarf_section_display_enum i;
if (generic_dwarf_sections [0] == NULL)
for (i = 0; i < max; i++)
generic_dwarf_sections [i] = debug_displays[i].section.name;
if (old_flavour != current_flavour)
{
if (current_flavour == bfd_target_mach_o_flavour)
for (i = 0; i < max; i++)
debug_displays[i].section.name = mach_o_dwarf_sections [i];
else if (old_flavour == bfd_target_mach_o_flavour)
for (i = 0; i < max; i++)
debug_displays[i].section.name = generic_dwarf_sections [i];
old_flavour = current_flavour;
}
}
/* Dump the dwarf debugging information. */
static void
dump_dwarf (bfd *abfd)
{
is_relocatable = ((abfd->flags & (HAS_RELOC | EXEC_P | DYNAMIC))
== HAS_RELOC);
/* FIXME: bfd_get_arch_size may return -1. We assume that 64bit
targets will return 64. */
eh_addr_size = bfd_get_arch_size (abfd) == 64 ? 8 : 4;
if (bfd_big_endian (abfd))
byte_get = byte_get_big_endian;
else if (bfd_little_endian (abfd))
byte_get = byte_get_little_endian;
else
abort ();
check_mach_o_dwarf (abfd);
bfd_map_over_sections (abfd, dump_dwarf_section, NULL);
free_debug_memory ();
}
/* Read ABFD's stabs section STABSECT_NAME, and return a pointer to
it. Return NULL on failure. */
static char *
read_section_stabs (bfd *abfd, const char *sect_name, bfd_size_type *size_ptr)
{
asection *stabsect;
bfd_size_type size;
char *contents;
stabsect = bfd_get_section_by_name (abfd, sect_name);
if (stabsect == NULL)
{
printf (_("No %s section present\n\n"), sect_name);
return FALSE;
}
size = bfd_section_size (abfd, stabsect);
contents = xmalloc (size);
if (! bfd_get_section_contents (abfd, stabsect, contents, 0, size))
{
non_fatal (_("Reading %s section of %s failed: %s"),
sect_name, bfd_get_filename (abfd),
bfd_errmsg (bfd_get_error ()));
free (contents);
exit_status = 1;
return NULL;
}
*size_ptr = size;
return contents;
}
/* 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 (bfd *abfd,
const char *stabsect_name,
unsigned *string_offset_ptr)
{
int i;
unsigned file_string_table_offset = 0;
unsigned next_file_string_table_offset = *string_offset_ptr;
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);
bfd_printf_vma (abfd, 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");
*string_offset_ptr = next_file_string_table_offset;
}
typedef struct
{
const char * section_name;
const char * string_section_name;
unsigned string_offset;
}
stab_section_names;
static void
find_stabs_section (bfd *abfd, asection *section, void *names)
{
int len;
stab_section_names * sought = (stab_section_names *) names;
/* Check for section names for which stabsect_name is a prefix, to
handle .stab.N, etc. */
len = strlen (sought->section_name);
/* If the prefix matches, and the files section name ends with a
nul or a digit, then we match. I.e., we want either an exact
match or a section followed by a number. */
if (strncmp (sought->section_name, section->name, len) == 0
&& (section->name[len] == 0
|| (section->name[len] == '.' && ISDIGIT (section->name[len + 1]))))
{
if (strtab == NULL)
strtab = read_section_stabs (abfd, sought->string_section_name,
&stabstr_size);
if (strtab)
{
stabs = (bfd_byte *) read_section_stabs (abfd, section->name,
&stab_size);
if (stabs)
print_section_stabs (abfd, section->name, &sought->string_offset);
}
}
}
static void
dump_stabs_section (bfd *abfd, char *stabsect_name, char *strsect_name)
{
stab_section_names s;
s.section_name = stabsect_name;
s.string_section_name = strsect_name;
s.string_offset = 0;
bfd_map_over_sections (abfd, find_stabs_section, & s);
free (strtab);
strtab = NULL;
}
/* Dump the any sections containing stabs debugging information. */
static void
dump_stabs (bfd *abfd)
{
dump_stabs_section (abfd, ".stab", ".stabstr");
dump_stabs_section (abfd, ".stab.excl", ".stab.exclstr");
dump_stabs_section (abfd, ".stab.index", ".stab.indexstr");
dump_stabs_section (abfd, "$GDB_SYMBOLS$", "$GDB_STRINGS$");
}
static void
dump_bfd_header (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");
PF (HAS_LOAD_PAGE, "HAS_LOAD_PAGE");
printf (_("\nstart address 0x"));
bfd_printf_vma (abfd, abfd->start_address);
printf ("\n");
}
static void
dump_bfd_private_header (bfd *abfd)
{
bfd_print_private_bfd_data (abfd, stdout);
}
/* Display a section in hexadecimal format with associated characters.
Each line prefixed by the zero padded address. */
static void
dump_section (bfd *abfd, asection *section, void *dummy ATTRIBUTE_UNUSED)
{
bfd_byte *data = 0;
bfd_size_type datasize;
bfd_size_type addr_offset;
bfd_size_type start_offset;
bfd_size_type stop_offset;
unsigned int opb = bfd_octets_per_byte (abfd);
/* Bytes per line. */
const int onaline = 16;
char buf[64];
int count;
int width;
if ((section->flags & SEC_HAS_CONTENTS) == 0)
return;
if (! process_section_p (section))
return;
if ((datasize = bfd_section_size (abfd, section)) == 0)
return;
printf (_("Contents of section %s:\n"), section->name);
data = xmalloc (datasize);
bfd_get_section_contents (abfd, section, data, 0, datasize);
/* Compute the address range to display. */
if (start_address == (bfd_vma) -1
|| start_address < section->vma)
start_offset = 0;
else
start_offset = start_address - section->vma;
if (stop_address == (bfd_vma) -1)
stop_offset = datasize / opb;
else
{
if (stop_address < section->vma)
stop_offset = 0;
else
stop_offset = stop_address - section->vma;
if (stop_offset > datasize / opb)
stop_offset = datasize / opb;
}
width = 4;
bfd_sprintf_vma (abfd, buf, start_offset + section->vma);
if (strlen (buf) >= sizeof (buf))
abort ();
count = 0;
while (buf[count] == '0' && buf[count+1] != '\0')
count++;
count = strlen (buf) - count;
if (count > width)
width = count;
bfd_sprintf_vma (abfd, buf, stop_offset + section->vma - 1);
if (strlen (buf) >= sizeof (buf))
abort ();
count = 0;
while (buf[count] == '0' && buf[count+1] != '\0')
count++;
count = strlen (buf) - count;
if (count > width)
width = count;
for (addr_offset = start_offset;
addr_offset < stop_offset; addr_offset += onaline / opb)
{
bfd_size_type j;
bfd_sprintf_vma (abfd, buf, (addr_offset + section->vma));
count = strlen (buf);
if ((size_t) count >= sizeof (buf))
abort ();
putchar (' ');
while (count < width)
{
putchar ('0');
count++;
}
fputs (buf + count - width, stdout);
putchar (' ');
for (j = addr_offset * opb;
j < addr_offset * opb + onaline; j++)
{
if (j < stop_offset * opb)
printf ("%02x", (unsigned) (data[j]));
else
printf (" ");
if ((j & 3) == 3)
printf (" ");
}
printf (" ");
for (j = addr_offset * opb;
j < addr_offset * opb + onaline; j++)
{
if (j >= stop_offset * opb)
printf (" ");
else
printf ("%c", ISPRINT (data[j]) ? data[j] : '.');
}
putchar ('\n');
}
free (data);
}
/* Actually display the various requested regions. */
static void
dump_data (bfd *abfd)
{
bfd_map_over_sections (abfd, dump_section, NULL);
}
/* Should perhaps share code and display with nm? */
static void
dump_symbols (bfd *abfd ATTRIBUTE_UNUSED, bfd_boolean dynamic)
{
asymbol **current;
long max;
long count;
if (dynamic)
{
current = dynsyms;
max = dynsymcount;
printf ("DYNAMIC SYMBOL TABLE:\n");
}
else
{
current = syms;
max = symcount;
printf ("SYMBOL TABLE:\n");
}
if (max == 0)
printf (_("no symbols\n"));
for (count = 0; count < max; count++)
{
bfd *cur_bfd;
if (*current == NULL)
printf (_("no information for symbol number %ld\n"), count);
else if ((cur_bfd = bfd_asymbol_bfd (*current)) == NULL)
printf (_("could not determine the type of symbol number %ld\n"),
count);
else if (process_section_p ((* current)->section)
&& (dump_special_syms
|| !bfd_is_target_special_symbol (cur_bfd, *current)))
{
const char *name = (*current)->name;
if (do_demangle && name != NULL && *name != '\0')
{
char *alloc;
/* If we want to demangle the name, we demangle it
here, and temporarily clobber it while calling
bfd_print_symbol. FIXME: This is a gross hack. */
alloc = bfd_demangle (cur_bfd, name, DMGL_ANSI | DMGL_PARAMS);
if (alloc != NULL)
(*current)->name = alloc;
bfd_print_symbol (cur_bfd, stdout, *current,
bfd_print_symbol_all);
if (alloc != NULL)
{
(*current)->name = name;
free (alloc);
}
}
else
bfd_print_symbol (cur_bfd, stdout, *current,
bfd_print_symbol_all);
printf ("\n");
}
current++;
}
printf ("\n\n");
}
static void
dump_reloc_set (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];
bfd_sprintf_vma (abfd, 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 != 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;
}
bfd_printf_vma (abfd, q->address);
if (q->howto == NULL)
printf (" *unknown* ");
else if (q->howto->name)
printf (" %-16s ", q->howto->name);
else
printf (" %-16d ", q->howto->type);
if (sym_name)
objdump_print_symname (abfd, NULL, *q->sym_ptr_ptr);
else
{
if (section_name == NULL)
section_name = "*unknown*";
printf ("[%s]", section_name);
}
if (q->addend)
{
printf ("+0x");
bfd_printf_vma (abfd, q->addend);
}
printf ("\n");
}
}
static void
dump_relocs_in_section (bfd *abfd,
asection *section,
void *dummy ATTRIBUTE_UNUSED)
{
arelent **relpp;
long relcount;
long relsize;
if ( bfd_is_abs_section (section)
|| bfd_is_und_section (section)
|| bfd_is_com_section (section)
|| (! process_section_p (section))
|| ((section->flags & SEC_RELOC) == 0))
return;
relsize = bfd_get_reloc_upper_bound (abfd, section);
if (relsize < 0)
bfd_fatal (bfd_get_filename (abfd));
printf ("RELOCATION RECORDS FOR [%s]:", section->name);
if (relsize == 0)
{
printf (" (none)\n\n");
return;
}
relpp = xmalloc (relsize);
relcount = bfd_canonicalize_reloc (abfd, section, 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, section, relpp, relcount);
printf ("\n\n");
}
free (relpp);
}
static void
dump_relocs (bfd *abfd)
{
bfd_map_over_sections (abfd, dump_relocs_in_section, NULL);
}
static void
dump_dynamic_relocs (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 = 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, NULL, relpp, relcount);
printf ("\n\n");
}
free (relpp);
}
}
/* Creates a table of paths, to search for source files. */
static void
add_include_path (const char *path)
{
if (path[0] == 0)
return;
include_path_count++;
include_paths = xrealloc (include_paths,
include_path_count * sizeof (*include_paths));
#ifdef HAVE_DOS_BASED_FILE_SYSTEM
if (path[1] == ':' && path[2] == 0)
path = concat (path, ".", (const char *) 0);
#endif
include_paths[include_path_count - 1] = path;
}
static void
adjust_addresses (bfd *abfd ATTRIBUTE_UNUSED,
asection *section,
void *arg)
{
if ((section->flags & SEC_DEBUGGING) == 0)
{
bfd_boolean *has_reloc_p = (bfd_boolean *) arg;
section->vma += adjust_section_vma;
if (*has_reloc_p)
section->lma += adjust_section_vma;
}
}
/* Dump selected contents of ABFD. */
static void
dump_bfd (bfd *abfd)
{
/* If we are adjusting section VMA's, change them all now. Changing
the BFD information is a hack. However, we must do it, or
bfd_find_nearest_line will not do the right thing. */
if (adjust_section_vma != 0)
{
bfd_boolean has_reloc = (abfd->flags & HAS_RELOC);
bfd_map_over_sections (abfd, adjust_addresses, &has_reloc);
}
if (! dump_debugging_tags)
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);
if (! dump_debugging_tags)
putchar ('\n');
if (dump_section_headers)
dump_headers (abfd);
if (dump_symtab
|| dump_reloc_info
|| disassemble
|| dump_debugging
|| dump_dwarf_section_info)
syms = slurp_symtab (abfd);
if (dump_dynamic_symtab || dump_dynamic_reloc_info
|| (disassemble && bfd_get_dynamic_symtab_upper_bound (abfd) > 0))
dynsyms = slurp_dynamic_symtab (abfd);
if (disassemble)
{
synthcount = bfd_get_synthetic_symtab (abfd, symcount, syms,
dynsymcount, dynsyms, &synthsyms);
if (synthcount < 0)
synthcount = 0;
}
if (dump_symtab)
dump_symbols (abfd, FALSE);
if (dump_dynamic_symtab)
dump_symbols (abfd, TRUE);
if (dump_dwarf_section_info)
dump_dwarf (abfd);
if (dump_stab_section_info)
dump_stabs (abfd);
if (dump_reloc_info && ! disassemble)
dump_relocs (abfd);
if (dump_dynamic_reloc_info && ! disassemble)
dump_dynamic_relocs (abfd);
if (dump_section_contents)
dump_data (abfd);
if (disassemble)
disassemble_data (abfd);
if (dump_debugging)
{
void *dhandle;
dhandle = read_debugging_info (abfd, syms, symcount);
if (dhandle != NULL)
{
if (!print_debugging_info (stdout, dhandle, abfd, syms,
bfd_demangle,
dump_debugging_tags ? TRUE : FALSE))
{
non_fatal (_("%s: printing debugging information failed"),
bfd_get_filename (abfd));
exit_status = 1;
}
}
}
if (syms)
{
free (syms);
syms = NULL;
}
if (dynsyms)
{
free (dynsyms);
dynsyms = NULL;
}
if (synthsyms)
{
free (synthsyms);
synthsyms = NULL;
}
symcount = 0;
dynsymcount = 0;
synthcount = 0;
}
static void
display_bfd (bfd *abfd)
{
char **matching;
if (bfd_check_format_matches (abfd, bfd_object, &matching))
{
dump_bfd (abfd);
return;
}
if (bfd_get_error () == bfd_error_file_ambiguously_recognized)
{
nonfatal (bfd_get_filename (abfd));
list_matching_formats (matching);
free (matching);
return;
}
if (bfd_get_error () != bfd_error_file_not_recognized)
{
nonfatal (bfd_get_filename (abfd));
return;
}
if (bfd_check_format_matches (abfd, bfd_core, &matching))
{
dump_bfd (abfd);
return;
}
nonfatal (bfd_get_filename (abfd));
if (bfd_get_error () == bfd_error_file_ambiguously_recognized)
{
list_matching_formats (matching);
free (matching);
}
}
static void
display_file (char *filename, char *target)
{
bfd *file;
bfd *arfile = NULL;
if (get_file_size (filename) < 1)
{
exit_status = 1;
return;
}
file = bfd_openr (filename, target);
if (file == NULL)
{
nonfatal (filename);
return;
}
/* If the file is an archive, process all of its elements. */
if (bfd_check_format (file, bfd_archive))
{
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)
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);
}
int
main (int argc, char **argv)
{
int c;
char *target = default_target;
bfd_boolean seenflag = FALSE;
#if defined (HAVE_SETLOCALE)
#if defined (HAVE_LC_MESSAGES)
setlocale (LC_MESSAGES, "");
#endif
setlocale (LC_CTYPE, "");
#endif
bindtextdomain (PACKAGE, LOCALEDIR);
textdomain (PACKAGE);
program_name = *argv;
xmalloc_set_program_name (program_name);
START_PROGRESS (program_name, 0);
expandargv (&argc, &argv);
bfd_init ();
set_default_bfd_target ();
while ((c = getopt_long (argc, argv, "pib:m:M:VvCdDlfaHhrRtTxsSI:j:wE:zgeGW",
long_options, (int *) 0))
!= EOF)
{
switch (c)
{
case 0:
break; /* We've been given a long option. */
case 'm':
machine = optarg;
break;
case 'M':
if (disassembler_options)
/* Ignore potential memory leak for now. */
disassembler_options = concat (disassembler_options, ",",
optarg, NULL);
else
disassembler_options = optarg;
break;
case 'j':
if (only_used == only_size)
{
only_size += 8;
only = xrealloc (only, only_size * sizeof (char *));
}
only [only_used++] = optarg;
break;
case 'l':
with_line_numbers = TRUE;
break;
case 'b':
target = optarg;
break;
case 'C':
do_demangle = TRUE;
if (optarg != NULL)
{
enum demangling_styles style;
style = cplus_demangle_name_to_style (optarg);
if (style == unknown_demangling)
fatal (_("unknown demangling style `%s'"),
optarg);
cplus_demangle_set_style (style);
}
break;
case 'w':
wide_output = TRUE;
break;
case OPTION_ADJUST_VMA:
adjust_section_vma = parse_vma (optarg, "--adjust-vma");
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
{
non_fatal (_("unrecognized -E option"));
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
{
non_fatal (_("unrecognized --endian type `%s'"), optarg);
usage (stderr, 1);
}
break;
case 'f':
dump_file_header = TRUE;
seenflag = TRUE;
break;
case 'i':
formats_info = TRUE;
seenflag = TRUE;
break;
case 'I':
add_include_path (optarg);
break;
case 'p':
dump_private_headers = TRUE;
seenflag = TRUE;
break;
case 'x':
dump_private_headers = TRUE;
dump_symtab = TRUE;
dump_reloc_info = TRUE;
dump_file_header = TRUE;
dump_ar_hdrs = TRUE;
dump_section_headers = TRUE;
seenflag = TRUE;
break;
case 't':
dump_symtab = TRUE;
seenflag = TRUE;
break;
case 'T':
dump_dynamic_symtab = TRUE;
seenflag = TRUE;
break;
case 'd':
disassemble = TRUE;
seenflag = TRUE;
break;
case 'z':
disassemble_zeroes = TRUE;
break;
case 'D':
disassemble = TRUE;
disassemble_all = TRUE;
seenflag = TRUE;
break;
case 'S':
disassemble = TRUE;
with_source_code = TRUE;
seenflag = TRUE;
break;
case 'g':
dump_debugging = 1;
seenflag = TRUE;
break;
case 'e':
dump_debugging = 1;
dump_debugging_tags = 1;
do_demangle = TRUE;
seenflag = TRUE;
break;
case 'W':
dump_dwarf_section_info = TRUE;
seenflag = TRUE;
do_debug_info = 1;
do_debug_abbrevs = 1;
do_debug_lines = 1;
do_debug_pubnames = 1;
do_debug_aranges = 1;
do_debug_ranges = 1;
do_debug_frames = 1;
do_debug_macinfo = 1;
do_debug_str = 1;
do_debug_loc = 1;
break;
case 'G':
dump_stab_section_info = TRUE;
seenflag = TRUE;
break;
case 's':
dump_section_contents = TRUE;
seenflag = TRUE;
break;
case 'r':
dump_reloc_info = TRUE;
seenflag = TRUE;
break;
case 'R':
dump_dynamic_reloc_info = TRUE;
seenflag = TRUE;
break;
case 'a':
dump_ar_hdrs = TRUE;
seenflag = TRUE;
break;
case 'h':
dump_section_headers = TRUE;
seenflag = TRUE;
break;
case 'H':
usage (stdout, 0);
seenflag = TRUE;
case 'v':
case 'V':
show_version = TRUE;
seenflag = TRUE;
break;
default:
usage (stderr, 1);
}
}
if (show_version)
print_version ("objdump");
if (!seenflag)
usage (stderr, 2);
if (formats_info)
exit_status = 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 exit_status;
}