1llvm-objdump - LLVM's object file dumper 2======================================== 3 4.. program:: llvm-objdump 5 6SYNOPSIS 7-------- 8 9:program:`llvm-objdump` [*commands*] [*options*] [*filenames...*] 10 11DESCRIPTION 12----------- 13The :program:`llvm-objdump` utility prints the contents of object files and 14final linked images named on the command line. If no file name is specified, 15:program:`llvm-objdump` will attempt to read from *a.out*. If *-* is used as a 16file name, :program:`llvm-objdump` will process a file on its standard input 17stream. 18 19COMMANDS 20-------- 21At least one of the following commands are required, and some commands can be 22combined with other commands: 23 24.. option:: -a, --archive-headers 25 26 Display the information contained within an archive's headers. 27 28.. option:: -d, --disassemble 29 30 Disassemble all executable sections found in the input files. On some 31 architectures (AArch64, PPC64, x86), all known instructions are disassembled by 32 default. On the others, :option:`--mcpu` or :option:`--mattr` is needed to 33 enable some instruction sets. Disabled instructions are displayed as 34 ``<unknown>``. 35 36.. option:: -D, --disassemble-all 37 38 Disassemble all sections found in the input files. 39 40.. option:: --disassemble-symbols=<symbol1[,symbol2,...]> 41 42 Disassemble only the specified symbols. Takes demangled symbol names when 43 :option:`--demangle` is specified, otherwise takes mangled symbol names. 44 Implies :option:`--disassemble`. 45 46.. option:: --dwarf=<value> 47 48 Dump the specified DWARF debug sections. The supported values are: 49 50 `frames` - .debug_frame 51 52.. option:: -f, --file-headers 53 54 Display the contents of the overall file header. 55 56.. option:: --fault-map-section 57 58 Display the content of the fault map section. 59 60.. option:: -h, --headers, --section-headers 61 62 Display summaries of the headers for each section. 63 64.. option:: --help 65 66 Display usage information and exit. Does not stack with other commands. 67 68.. option:: -p, --private-headers 69 70 Display format-specific file headers. 71 72.. option:: -r, --reloc 73 74 Display the relocation entries in the file. 75 76.. option:: -R, --dynamic-reloc 77 78 Display the dynamic relocation entries in the file. 79 80.. option:: --raw-clang-ast 81 82 Dump the raw binary contents of the clang AST section. 83 84.. option:: -s, --full-contents 85 86 Display the contents of each section. 87 88.. option:: -t, --syms 89 90 Display the symbol table. 91 92.. option:: -T, --dynamic-syms 93 94 Display the contents of the dynamic symbol table. 95 96.. option:: -u, --unwind-info 97 98 Display the unwind info of the input(s). 99 100 This operation is only currently supported for COFF and Mach-O object files. 101 102.. option:: -v, --version 103 104 Display the version of the :program:`llvm-objdump` executable. Does not stack 105 with other commands. 106 107.. option:: -x, --all-headers 108 109 Display all available header information. Equivalent to specifying 110 :option:`--archive-headers`, :option:`--file-headers`, 111 :option:`--private-headers`, :option:`--reloc`, :option:`--section-headers`, 112 and :option:`--syms`. 113 114OPTIONS 115------- 116:program:`llvm-objdump` supports the following options: 117 118.. option:: --adjust-vma=<offset> 119 120 Increase the displayed address in disassembly or section header printing by 121 the specified offset. 122 123.. option:: --arch-name=<string> 124 125 Specify the target architecture when disassembling. Use :option:`--version` 126 for a list of available targets. 127 128.. option:: -C, --demangle 129 130 Demangle symbol names in the output. 131 132.. option:: --debug-vars=<format> 133 134 Print the locations (in registers or memory) of source-level variables 135 alongside disassembly. ``format`` may be ``unicode`` or ``ascii``, defaulting 136 to ``unicode`` if omitted. 137 138.. option:: --debug-vars-indent=<width> 139 140 Distance to indent the source-level variable display, relative to the start 141 of the disassembly. Defaults to 52 characters. 142 143.. option:: -j, --section=<section1[,section2,...]> 144 145 Perform commands on the specified sections only. For Mach-O use 146 `segment,section` to specify the section name. 147 148.. option:: -l, --line-numbers 149 150 When disassembling, display source line numbers. Implies 151 :option:`--disassemble`. 152 153.. option:: -M, --disassembler-options=<opt1[,opt2,...]> 154 155 Pass target-specific disassembler options. Available options: 156 157 * ``reg-names-std``: ARM only (default). Print in ARM 's instruction set documentation, with r13/r14/r15 replaced by sp/lr/pc. 158 * ``reg-names-raw``: ARM only. Use r followed by the register number. 159 * ``no-aliases``: AArch64 and RISC-V only. Print raw instruction mnemonic instead of pseudo instruction mnemonic. 160 * ``numeric``: RISC-V only. Print raw register names instead of ABI mnemonic. (e.g. print x1 instead of ra) 161 * ``att``: x86 only (default). Print in the AT&T syntax. 162 * ``intel``: x86 only. Print in the intel syntax. 163 164.. option:: --mcpu=<cpu-name> 165 166 Target a specific CPU type for disassembly. Specify ``--mcpu=help`` to display 167 available CPUs. 168 169.. option:: --mattr=<a1,+a2,-a3,...> 170 171 Enable/disable target-specific attributes. Specify ``--mattr=help`` to display 172 the available attributes. 173 174.. option:: --no-leading-addr 175 176 When disassembling, do not print leading addresses. 177 178.. option:: --no-print-imm-hex 179 180 Do not use hex format for immediate values in disassembly output (default). 181 182.. option:: --no-show-raw-insn 183 184 When disassembling, do not print the raw bytes of each instruction. 185 186.. option:: --prefix=<prefix> 187 188 When disassembling with the :option:`--source` option, prepend ``prefix`` to 189 absolute paths. 190 191.. option:: --prefix-strip=<level> 192 193 When disassembling with the :option:`--source` option, strip out ``level`` 194 initial directories from absolute paths. This option has no effect without 195 :option:`--prefix`. 196 197.. option:: --print-imm-hex 198 199 Use hex format when printing immediate values in disassembly output. 200 201.. option:: -S, --source 202 203 When disassembling, display source interleaved with the disassembly. Implies 204 :option:`--disassemble`. 205 206.. option:: --show-lma 207 208 Display the LMA column when dumping ELF section headers. Defaults to off 209 unless any section has different VMA and LMAs. 210 211.. option:: --start-address=<address> 212 213 When disassembling, only disassemble from the specified address. 214 215 When printing relocations, only print the relocations patching offsets from at least ``address``. 216 217 When printing symbols, only print symbols with a value of at least ``address``. 218 219.. option:: --stop-address=<address> 220 221 When disassembling, only disassemble up to, but not including the specified address. 222 223 When printing relocations, only print the relocations patching offsets up to ``address``. 224 225 When printing symbols, only print symbols with a value up to ``address``. 226 227.. option:: --symbolize-operands 228 229 When disassembling, symbolize a branch target operand to print a label instead of a real address. 230 231 When printing a PC-relative global symbol reference, print it as an offset from the leading symbol. 232 233 When a bb-address-map section is present (i.e., the object file is built with ``-fbasic-block-sections=labels``), labels are retrieved from that section instead. 234 235 Only works with PowerPC objects or X86 linked images. 236 237 Example: 238 A non-symbolized branch instruction with a local target and pc-relative memory access like 239 240 .. code-block:: none 241 242 cmp eax, dword ptr [rip + 4112] 243 jge 0x20117e <_start+0x25> 244 245 might become 246 247 .. code-block:: none 248 249 <L0>: 250 cmp eax, dword ptr <g> 251 jge <L0> 252 253.. option:: --triple=<string> 254 255 Target triple to disassemble for, see ``--version`` for available targets. 256 257.. option:: -w, --wide 258 259 Ignored for compatibility with GNU objdump. 260 261.. option:: --x86-asm-syntax=<style> 262 263 Deprecated. 264 When used with :option:`--disassemble`, choose style of code to emit from 265 X86 backend. Supported values are: 266 267 .. option:: att 268 269 AT&T-style assembly 270 271 .. option:: intel 272 273 Intel-style assembly 274 275 276 The default disassembly style is **att**. 277 278.. option:: -z, --disassemble-zeroes 279 280 Do not skip blocks of zeroes when disassembling. 281 282.. option:: @<FILE> 283 284 Read command-line options and commands from response file `<FILE>`. 285 286MACH-O ONLY OPTIONS AND COMMANDS 287-------------------------------- 288 289.. option:: --arch=<architecture> 290 291 Specify the architecture to disassemble. see ``--version`` for available 292 architectures. 293 294.. option:: --archive-member-offsets 295 296 Print the offset to each archive member for Mach-O archives (requires 297 :option:`--archive-headers`). 298 299.. option:: --bind 300 301 Display binding info 302 303.. option:: --data-in-code 304 305 Display the data in code table. 306 307.. option:: --dis-symname=<name> 308 309 Disassemble just the specified symbol's instructions. 310 311.. option:: --dyld_info 312 313 Print bind and rebase information used by dyld to resolve external 314 references in a final linked binary. 315 316.. option:: --dylibs-used 317 318 Display the shared libraries used for linked files. 319 320.. option:: --dsym=<string> 321 322 Use .dSYM file for debug info. 323 324.. option:: --dylib-id 325 326 Display the shared library's ID for dylib files. 327 328.. option:: --exports-trie 329 330 Display exported symbols. 331 332.. option:: --function-starts 333 334 Print the function starts table for Mach-O objects. 335 336.. option:: -g 337 338 Print line information from debug info if available. 339 340.. option:: --full-leading-addr 341 342 Print the full leading address when disassembling. 343 344.. option:: --indirect-symbols 345 346 Display the indirect symbol table. 347 348.. option:: --info-plist 349 350 Display the info plist section as strings. 351 352.. option:: --lazy-bind 353 354 Display lazy binding info. 355 356.. option:: --link-opt-hints 357 358 Display the linker optimization hints. 359 360.. option:: -m, --macho 361 362 Use Mach-O specific object file parser. Commands and other options may behave 363 differently when used with ``--macho``. 364 365.. option:: --no-leading-headers 366 367 Do not print any leading headers. 368 369.. option:: --no-symbolic-operands 370 371 Do not print symbolic operands when disassembling. 372 373.. option:: --non-verbose 374 375 Display the information for Mach-O objects in non-verbose or numeric form. 376 377.. option:: --objc-meta-data 378 379 Display the Objective-C runtime meta data. 380 381.. option:: --offloading 382 383 Display the content of the LLVM offloading section. 384 385.. option:: --private-header 386 387 Display only the first format specific file header. 388 389.. option:: --rebase 390 391 Display rebasing information. 392 393.. option:: --rpaths 394 395 Display runtime search paths for the binary. 396 397.. option:: --universal-headers 398 399 Display universal headers. 400 401.. option:: --weak-bind 402 403 Display weak binding information. 404 405XCOFF ONLY OPTIONS AND COMMANDS 406--------------------------------- 407 408.. option:: --symbol-description 409 410 Add symbol description to disassembly output. 411 412BUGS 413---- 414 415To report bugs, please visit <https://github.com/llvm/llvm-project/labels/tools:llvm-objdump/>. 416 417SEE ALSO 418-------- 419 420:manpage:`llvm-nm(1)`, :manpage:`llvm-otool(1)`, :manpage:`llvm-readelf(1)`, 421:manpage:`llvm-readobj(1)` 422