binutils/objdump.1

   1 .\" Copyright (c) 1991 Free Software Foundation
   2 .\" See section COPYING for conditions for redistribution
   3 .TH objdump 1 "5 November 1991" "cygnus support" "GNU Development Tools"
   4 .de BP
   5 .sp
   6 .ti \-.2i
   7 \(**
   8 ..
   9
  10 .SH NAME
  11 objdump \- display information from object files.
  12
  13 .SH SYNOPSIS
  14 .hy 0
  15 .na
  16 .TP
  17 .B objdump
  18 .RB "[\|" \-a | \-\-archive\-headers "\|]"
  19 .RB "[\|" "\-b\ "\c
  20 .I bfdname\c
  21 .RB " | " "\-\-target="\c
  22 .I bfdname\c
  23 \&\|]
  24 .RB "[\|" \-d | \-\-disassemble "\|]"
  25 .RB "[\|" \-f | \-\-file\-headers "\|]"
  26 .RB "[\|" \-h | \-\-section\-headers
  27 .RB "| " \-\-headers "\|]"
  28 .RB "[\|" \-i | \-\-info "\|]"
  29 .RB "[\|" "\-j\ "\c
  30 .I section\c
  31 .RB " | " "\-\-section="\c
  32 .I section\c
  33 \&\|]
  34 .RB "[\|" \-l | \-\-line\-numbers "\|]"
  35 .RB "[\|" "\-m\ "\c
  36 .I machine\c
  37 .RB " | " "\-\-architecture="\c
  38 .I machine\c
  39 \&\|]
  40 .RB "[\|" \-r | \-\-reloc "\|]"
  41 .RB "[\|" \-R | \-\-dynamic\-reloc "\|]"
  42 .RB "[\|" \-s | \-\-full\-contents "\|]"
  43 .RB "[\|" \-\-stabs "\|]"
  44 .RB "[\|" \-t | \-\-syms "\|]"
  45 .RB "[\|" \-T | \-\-dynamic\-syms "\|]"
  46 .RB "[\|" \-x | \-\-all\-headers "\|]"
  47 .RB "[\|" \-\-version "\|]"
  48 .RB "[\|" \-\-help "\|]"
  49 .I objfile\c
  50 \&.\|.\|.
  51 .ad b
  52 .hy 1
  53 .SH DESCRIPTION
  54 \c
  55 .B objdump\c
  56 \& displays information about one or more object files.
  57 The options control what particular information to display.  This
  58 information is mostly useful to programmers who are working on the
  59 compilation tools, as opposed to programmers who just want their
  60 program to compile and work.
  61 .PP
  62 .IR  "objfile" .\|.\|.
  63 are the object files to be examined.  When you specify archives,
  64 \c
  65 .B objdump\c
  66 \& shows information on each of the member object files.
  67
  68 .SH OPTIONS
  69 Where long and short forms of an option are shown together, they are
  70 equivalent.  At least one option besides
  71 .B \-l
  72 (\fB\-\-line\-numbers\fP) must be given.
  73
  74 .TP
  75 .B \-a
  76 .TP
  77 .B \-\-archive\-headers
  78 If any files from \c
  79 .I objfile\c
  80 \& are archives, display the archive
  81 header information (in a format similar to `\|\c
  82 .B ls \-l\c
  83 \|').  Besides the
  84 information you could list with `\|\c
  85 .B ar tv\c
  86 \|', `\|\c
  87 .B objdump \-a\c
  88 \|' shows
  89 the object file format of each archive member.
  90
  91 .TP
  92 .BI "\-b " "bfdname"\c
  93 .TP
  94 .BI "\-\-target=" "bfdname"\c
  95 \&
  96 Specify the object-code format for the object files to be
  97 \c
  98 .I bfdname\c
  99 \&.  This may not be necessary; \c
 100 .I objdump\c
 101 \& can
 102 automatically recognize many formats.  For example,
 103 .sp
 104 .br
 105 objdump\ \-b\ oasys\ \-m\ vax\ \-h\ fu.o
 106 .br
 107 .sp
 108
 109 display summary information from the section headers (`\|\c
 110 .B \-h\c
 111 \|') of
 112 `\|\c
 113 .B fu.o\c
 114 \|', which is explicitly identified (`\|\c
 115 .B \-m\c
 116 \|') as a Vax object
 117 file in the format produced by Oasys compilers.  You can list the
 118 formats available with the `\|\c
 119 .B \-i\c
 120 \|' option.
 121
 122 .TP
 123 .B \-d
 124 .TP
 125 .B \-\-disassemble
 126 Display the assembler mnemonics for the machine
 127 instructions from \c
 128 .I objfile\c
 129 \&.
 130
 131 .TP
 132 .B \-f
 133 .TP
 134 .B \-\-file\-headers
 135 Display summary information from the overall header of
 136 each file in \c
 137 .I objfile\c
 138 \&.
 139
 140 .TP
 141 .B \-h
 142 .TP
 143 .B \-\-section\-headers
 144 .TP
 145 .B \-\-headers
 146 Display summary information from the section headers of the
 147 object file.
 148
 149 .TP
 150 .B \-\-help
 151 Print a summary of the options to
 152 .B objdump
 153 and exit.
 154
 155 .TP
 156 .B \-i
 157 .TP
 158 .B \-\-info
 159 Display a list showing all architectures and object formats available
 160 for specification with \c
 161 .B \-b\c
 162 \& or \c
 163 .B \-m\c
 164 \&.
 165
 166 .TP
 167 .BI "\-j " "name"\c
 168 .TP
 169 .BI "\-\-section=" "name"\c
 170 \&
 171 Display information only for section \c
 172 .I name\c
 173 \&
 174
 175 .TP
 176 .B \-l
 177 .TP
 178 .B \-\-line\-numbers
 179 Label the display (using debugging information) with the filename
 180 and source line numbers corresponding to the object code shown.
 181 Only useful with \fB\-d\fP.
 182
 183 .TP
 184 .BI "\-m " "machine"\c
 185 .TP
 186 .BI "\-\-architecture=" "machine"\c
 187 \&
 188 Specify the object files \c
 189 .I objfile\c
 190 \& are for architecture
 191 \c
 192 .I machine\c
 193 \&.  You can list available architectures using the `\|\c
 194 .B \-i\c
 195 \|'
 196 option.
 197
 198 .TP
 199 .B \-r
 200 .TP
 201 .B \-\-reloc
 202 Print the relocation entries of the file.
 203
 204 .TP
 205 .B \-R
 206 .TP
 207 .B \-\-dynamic\-reloc
 208 Print the dynamic relocation entries of the file.  This is only
 209 meaningful for dynamic objects, such as certain types of shared
 210 libraries.
 211
 212 .TP
 213 .B \-s
 214 .TP
 215 .B \-\-full\-contents
 216 Display the full contents of any sections requested.
 217
 218 .TP
 219 .B \-\-stabs
 220 Display the contents of the .stab, .stab.index, and .stab.excl
 221 sections from an ELF file.  This is only useful on systems (such as
 222 Solaris 2.0) in which .stab debugging symbol-table entries are carried
 223 in an ELF section.  In most other file formats, debugging symbol-table
 224 entries are interleaved with linkage symbols, and are visible in the
 225 \-\-syms output.
 226
 227 .TP
 228 .B \-t
 229 .TP
 230 .B \-\-syms
 231 Symbol Table.  Print the symbol table entries of the file.
 232 This is similar to the information provided by the `\|\c
 233 .B nm\c
 234 \|' program.
 235
 236 .TP
 237 .B \-T
 238 .TP
 239 .B \-\-dynamic\-syms
 240 Dynamic Symbol Table.  Print the dynamic symbol table entries of the
 241 file.  This is only meaningful for dynamic objects, such as certain
 242 types of shared libraries.  This is similar to the information
 243 provided by the `\|\c
 244 .B nm\c
 245 \|' program when given the
 246 .B \-D (\-\-dynamic)
 247 option.
 248
 249 .TP
 250 .B \-\-version
 251 Print the version number of
 252 .B objdump
 253 and exit.
 254
 255 .TP
 256 .B \-x
 257 .TP
 258 .B \-\-all\-headers
 259 Display all available header information, including the symbol table and
 260 relocation entries.  Using `\|\c
 261 .B \-x\c
 262 \|' is equivalent to specifying all of
 263 `\|\c
 264 .B \-a \-f \-h \-r \-t\c
 265 \|'.
 266
 267 .SH "SEE ALSO"
 268 .RB "`\|" binutils "\|'"
 269 entry in
 270 .B
 271 info\c
 272 \&;
 273 .I
 274 The GNU Binary Utilities\c
 275 \&, Roland H. Pesch (October 1991);
 276 .BR nm "(" 1 ")."
 277
 278 .SH COPYING
 279 Copyright (c) 1991 Free Software Foundation, Inc.
 280 .PP
 281 Permission is granted to make and distribute verbatim copies of
 282 this manual provided the copyright notice and this permission notice
 283 are preserved on all copies.
 284 .PP
 285 Permission is granted to copy and distribute modified versions of this
 286 manual under the conditions for verbatim copying, provided that the
 287 entire resulting derived work is distributed under the terms of a
 288 permission notice identical to this one.
 289 .PP
 290 Permission is granted to copy and distribute translations of this
 291 manual into another language, under the above conditions for modified
 292 versions, except that this permission notice may be included in
 293 translations approved by the Free Software Foundation instead of in
 294 the original English.