binutils/objdump.1

   1 .\" Copyright (c) 1991, 1996 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 "[\|" \-\-debugging "\|]"
  25 .RB "[\|" \-d | \-\-disassemble "\|]"
  26 .RB "[\|" \-D | \-\-disassemble-all "\|]"
  27 .RB "[\|" \-f | \-\-file\-headers "\|]"
  28 .RB "[\|" \-h | \-\-section\-headers
  29 .RB "| " \-\-headers "\|]"
  30 .RB "[\|" \-i | \-\-info "\|]"
  31 .RB "[\|" "\-j\ "\c
  32 .I section\c
  33 .RB " | " "\-\-section="\c
  34 .I section\c
  35 \&\|]
  36 .RB "[\|" \-l | \-\-line\-numbers "\|]"
  37 .RB "[\|" "\-m\ "\c
  38 .I machine\c
  39 .RB " | " "\-\-architecture="\c
  40 .I machine\c
  41 \&\|]
  42 .RB "[\|" \-r | \-\-reloc "\|]"
  43 .RB "[\|" \-R | \-\-dynamic\-reloc "\|]"
  44 .RB "[\|" \-s | \-\-full\-contents "\|]"
  45 .RB "[\|" \-S | \-\-source "\|]"
  46 .RB "[\|" \-\-show\-raw\-insn "\|]"
  47 .RB "[\|" \-\-stabs "\|]"
  48 .RB "[\|" \-t | \-\-syms "\|]"
  49 .RB "[\|" \-T | \-\-dynamic\-syms "\|]"
  50 .RB "[\|" \-x | \-\-all\-headers "\|]"
  51 .RB "[\|" "\-\-start\-address="\c
  52 .I address\c
  53 \&\|]
  54 .RB "[\|" "\-\-stop\-address="\c
  55 .I address\c
  56 \&\|]
  57 .RB "[\|" \-\-version "\|]"
  58 .RB "[\|" \-\-help "\|]"
  59 .I objfile\c
  60 \&.\|.\|.
  61 .ad b
  62 .hy 1
  63 .SH DESCRIPTION
  64 \c
  65 .B objdump\c
  66 \& displays information about one or more object files.
  67 The options control what particular information to display.  This
  68 information is mostly useful to programmers who are working on the
  69 compilation tools, as opposed to programmers who just want their
  70 program to compile and work.
  71 .PP
  72 .IR  "objfile" .\|.\|.
  73 are the object files to be examined.  When you specify archives,
  74 \c
  75 .B objdump\c
  76 \& shows information on each of the member object files.
  77
  78 .SH OPTIONS
  79 Where long and short forms of an option are shown together, they are
  80 equivalent.  At least one option besides
  81 .B \-l
  82 (\fB\-\-line\-numbers\fP) must be given.
  83
  84 .TP
  85 .B \-a
  86 .TP
  87 .B \-\-archive\-headers
  88 If any files from \c
  89 .I objfile\c
  90 \& are archives, display the archive
  91 header information (in a format similar to `\|\c
  92 .B ls \-l\c
  93 \|').  Besides the
  94 information you could list with `\|\c
  95 .B ar tv\c
  96 \|', `\|\c
  97 .B objdump \-a\c
  98 \|' shows
  99 the object file format of each archive member.
 100
 101 .TP
 102 .BI "\-b " "bfdname"\c
 103 .TP
 104 .BI "\-\-target=" "bfdname"
 105 Specify the object-code format for the object files to be
 106 \c
 107 .I bfdname\c
 108 \&.  This may not be necessary; \c
 109 .I objdump\c
 110 \& can
 111 automatically recognize many formats.  For example,
 112 .sp
 113 .br
 114 objdump\ \-b\ oasys\ \-m\ vax\ \-h\ fu.o
 115 .br
 116 .sp
 117 display summary information from the section headers (`\|\c
 118 .B \-h\c
 119 \|') of
 120 `\|\c
 121 .B fu.o\c
 122 \|', which is explicitly identified (`\|\c
 123 .B \-m\c
 124 \|') as a Vax object
 125 file in the format produced by Oasys compilers.  You can list the
 126 formats available with the `\|\c
 127 .B \-i\c
 128 \|' option.
 129
 130 .TP
 131 .B \-\-debugging
 132 Display debugging information.  This attempts to parse debugging
 133 information stored in the file and print it out using a C like syntax.
 134 Only certain types of debugging information have been implemented.
 135
 136 .TP
 137 .B \-d
 138 .TP
 139 .B \-\-disassemble
 140 Display the assembler mnemonics for the machine
 141 instructions from \c
 142 .I objfile\c
 143 \&.
 144 This option only disassembles those sections which are
 145 expected to contain instructions.
 146
 147 .TP
 148 .B \-D
 149 .TP
 150 .B \-\-disassemble-all
 151 Like \fB\-d\fP, but disassemble the contents of all sections, not just
 152 those expected to contain instructions.
 153
 154 .TP
 155 .B \-f
 156 .TP
 157 .B \-\-file\-headers
 158 Display summary information from the overall header of
 159 each file in \c
 160 .I objfile\c
 161 \&.
 162
 163 .TP
 164 .B \-h
 165 .TP
 166 .B \-\-section\-headers
 167 .TP
 168 .B \-\-headers
 169 Display summary information from the section headers of the
 170 object file.
 171
 172 .TP
 173 .B \-\-help
 174 Print a summary of the options to
 175 .B objdump
 176 and exit.
 177
 178 .TP
 179 .B \-i
 180 .TP
 181 .B \-\-info
 182 Display a list showing all architectures and object formats available
 183 for specification with \c
 184 .B \-b\c
 185 \& or \c
 186 .B \-m\c
 187 \&.
 188
 189 .TP
 190 .BI "\-j " "name"\c
 191 .TP
 192 .BI "\-\-section=" "name"
 193 Display information only for section \c
 194 .I name\c
 195 \&.
 196
 197 .TP
 198 .B \-l
 199 .TP
 200 .B \-\-line\-numbers
 201 Label the display (using debugging information) with the filename
 202 and source line numbers corresponding to the object code shown.
 203 Only useful with \fB\-d\fP, \fB\-D\fP, or \fB\-r\fP.
 204
 205 .TP
 206 .BI "\-m " "machine"\c
 207 .TP
 208 .BI "\-\-architecture=" "machine"
 209 Specify the object files \c
 210 .I objfile\c
 211 \& are for architecture
 212 \c
 213 .I machine\c
 214 \&.  You can list available architectures using the `\|\c
 215 .B \-i\c
 216 \|'
 217 option.
 218
 219 .TP
 220 .B \-r
 221 .TP
 222 .B \-\-reloc
 223 Print the relocation entries of the file.  If used with \fB\-d\fP or
 224 \fB\-d\fP, the relocations are printed interspersed with the
 225 disassembly.
 226
 227 .TP
 228 .B \-R
 229 .TP
 230 .B \-\-dynamic\-reloc
 231 Print the dynamic relocation entries of the file.  This is only
 232 meaningful for dynamic objects, such as certain types of shared
 233 libraries.
 234
 235 .TP
 236 .B \-s
 237 .TP
 238 .B \-\-full\-contents
 239 Display the full contents of any sections requested.
 240
 241 .TP
 242 .B \-S
 243 .TP
 244 .B \-\-source
 245 Display source code intermixed with disassembly, if possible.  Implies
 246 \fB-d\fP.
 247
 248 .TP
 249 .B \-\-show-raw-insn
 250 When disassembling instructions, print the instruction in hex as well as
 251 in symbolic form.  Not all targets handle this correctly yet.
 252
 253 .TP
 254 .B \-\-stabs
 255 Display the contents of the .stab, .stab.index, and .stab.excl
 256 sections from an ELF file.  This is only useful on systems (such as
 257 Solaris 2.0) in which .stab debugging symbol-table entries are carried
 258 in an ELF section.  In most other file formats, debugging symbol-table
 259 entries are interleaved with linkage symbols, and are visible in the
 260 \-\-syms output.
 261
 262 .TP
 263 .BI "\-\-start\-address=" "address"
 264 Start displaying data at the specified address.  This affects the output
 265 of the
 266 .B \-d\c
 267 ,
 268 .B \-r
 269 and
 270 .B \-s
 271 options.
 272
 273 .TP
 274 .BI "\-\-stop\-address=" "address"
 275 Stop displaying data at the specified address.  This affects the output
 276 of the
 277 .B \-d\c
 278 ,
 279 .B \-r
 280 and
 281 .B \-s
 282 options.
 283
 284 .TP
 285 .B \-t
 286 .TP
 287 .B \-\-syms
 288 Symbol Table.  Print the symbol table entries of the file.
 289 This is similar to the information provided by the `\|\c
 290 .B nm\c
 291 \|' program.
 292
 293 .TP
 294 .B \-T
 295 .TP
 296 .B \-\-dynamic\-syms
 297 Dynamic Symbol Table.  Print the dynamic symbol table entries of the
 298 file.  This is only meaningful for dynamic objects, such as certain
 299 types of shared libraries.  This is similar to the information
 300 provided by the `\|\c
 301 .B nm\c
 302 \|' program when given the
 303 .B \-D (\-\-dynamic)
 304 option.
 305
 306 .TP
 307 .B \-\-version
 308 Print the version number of
 309 .B objdump
 310 and exit.
 311
 312 .TP
 313 .B \-x
 314 .TP
 315 .B \-\-all\-headers
 316 Display all available header information, including the symbol table and
 317 relocation entries.  Using `\|\c
 318 .B \-x\c
 319 \|' is equivalent to specifying all of
 320 `\|\c
 321 .B \-a \-f \-h \-r \-t\c
 322 \|'.
 323
 324 .SH "SEE ALSO"
 325 .RB "`\|" binutils "\|'"
 326 entry in
 327 .B
 328 info\c
 329 \&;
 330 .I
 331 The GNU Binary Utilities\c
 332 \&, Roland H. Pesch (October 1991);
 333 .BR nm "(" 1 ")."
 334
 335 .SH COPYING
 336 Copyright (c) 1991, 92, 93, 94, 95, 1996 Free Software Foundation, Inc.
 337 .PP
 338 Permission is granted to make and distribute verbatim copies of
 339 this manual provided the copyright notice and this permission notice
 340 are preserved on all copies.
 341 .PP
 342 Permission is granted to copy and distribute modified versions of this
 343 manual under the conditions for verbatim copying, provided that the
 344 entire resulting derived work is distributed under the terms of a
 345 permission notice identical to this one.
 346 .PP
 347 Permission is granted to copy and distribute translations of this
 348 manual into another language, under the above conditions for modified
 349 versions, except that this permission notice may be included in
 350 translations approved by the Free Software Foundation instead of in
 351 the original English.