1LLVM-OBJDUMP(1) LLVM LLVM-OBJDUMP(1)
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6 llvm-objdump - LLVM's object file dumper
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9 llvm-objdump [commands] [options] [filenames...]
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12 The llvm-objdump utility prints the contents of object files and final
13 linked images named on the command line. If no file name is specified,
14 llvm-objdump will attempt to read from a.out. If - is used as a file
15 name, llvm-objdump will process a file on its standard input stream.
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18 At least one of the following commands are required, and some commands
19 can be combined with other commands:
20 -a, --archive-headers
22 Display the information contained within an archive's headers.
23 -d, --disassemble
25 Disassemble all executable sections found in the input files.
26 -D, --disassemble-all
28 Disassemble all sections found in the input files.
29 --disassemble-symbols=<symbol1[,symbol2,...]>
31 Disassemble only the specified symbols. Takes demangled symbol
32 names when --demangle is specified, otherwise takes mangled sym‐
33 bol names. Implies --disassemble.
34 --dwarf=<value>
36 Dump the specified DWARF debug sections. The supported values
37 are:
38 frames - .debug_frame
40 -f, --file-headers
42 Display the contents of the overall file header.
43 --fault-map-section
45 Display the content of the fault map section.
46 -h, --headers, --section-headers
48 Display summaries of the headers for each section.
49 --help Display usage information and exit. Does not stack with other
51 commands.
52 -p, --private-headers
54 Display format-specific file headers.
55 -r, --reloc
57 Display the relocation entries in the file.
58 -R, --dynamic-reloc
60 Display the dynamic relocation entries in the file.
61 --raw-clang-ast
63 Dump the raw binary contents of the clang AST section.
64 -s, --full-contents
66 Display the contents of each section.
67 -t, --syms
69 Display the symbol table.
70 -T, --dynamic-syms
72 Display the contents of the dynamic symbol table.
73 -u, --unwind-info
75 Display the unwind info of the input(s).
76 This operation is only currently supported for COFF and Mach-O
78 object files.
79 -v, --version
81 Display the version of the llvm-objdump executable. Does not
82 stack with other commands.
83 -x, --all-headers
85 Display all available header information. Equivalent to specify‐
86 ing --archive-headers, --file-headers, --private-headers,
87 --reloc, --section-headers, and --syms.
88
90 llvm-objdump supports the following options:
91 --adjust-vma=<offset>
93 Increase the displayed address in disassembly or section header
94 printing by the specified offset.
95 --arch-name=<string>
97 Specify the target architecture when disassembling. Use
98 --version for a list of available targets.
99 -C, --demangle
101 Demangle symbol names in the output.
102 --debug-vars=<format>
104 Print the locations (in registers or memory) of source-level
105 variables alongside disassembly. format may be unicode or ascii,
106 defaulting to unicode if omitted.
107 --debug-vars-indent=<width>
109 Distance to indent the source-level variable display, relative
110 to the start of the disassembly. Defaults to 52 characters.
111 -j, --section=<section1[,section2,...]>
113 Perform commands on the specified sections only. For Mach-O use
114 segment,section to specify the section name.
115 -l, --line-numbers
117 When disassembling, display source line numbers. Implies
118 --disassemble.
119 -M, --disassembler-options=<opt1[,opt2,...]>
121 Pass target-specific disassembler options. Available options:
122 • reg-names-std: ARM only (default). Print in ARM 's instruction
124 set documentation, with r13/r14/r15 replaced by sp/lr/pc.
125 • reg-names-raw: ARM only. Use r followed by the register num‐
127 ber.
128 • no-aliases: AArch64 and RISC-V only. Print raw instruction
130 mnemonic instead of pseudo instruction mnemonic.
131 • numeric: RISC-V only. Print raw register names instead of ABI
133 mnemonic. (e.g. print x1 instead of ra)
134 • att: x86 only (default). Print in the AT&T syntax.
136 • intel: x86 only. Print in the intel syntax.
138 --mcpu=<cpu-name>
140 Target a specific CPU type for disassembly. Specify --mcpu=help
141 to display available CPUs.
142 --mattr=<a1,+a2,-a3,...>
144 Enable/disable target-specific attributes. Specify --mattr=help
145 to display the available attributes.
146 --no-leading-addr
148 When disassembling, do not print leading addresses.
149 --no-print-imm-hex
151 Do not use hex format for immediate values in disassembly output
152 (default).
153 --no-show-raw-insn
155 When disassembling, do not print the raw bytes of each instruc‐
156 tion.
157 --prefix=<prefix>
159 When disassembling with the --source option, prepend prefix to
160 absolute paths.
161 --prefix-strip=<level>
163 When disassembling with the --source option, strip out level
164 initial directories from absolute paths. This option has no ef‐
165 fect without --prefix.
166 --print-imm-hex
168 Use hex format when printing immediate values in disassembly
169 output.
170 -S, --source
172 When disassembling, display source interleaved with the disas‐
173 sembly. Implies --disassemble.
174 --show-lma
176 Display the LMA column when dumping ELF section headers. De‐
177 faults to off unless any section has different VMA and LMAs.
178 --start-address=<address>
180 When disassembling, only disassemble from the specified address.
181 When printing relocations, only print the relocations patching
183 offsets from at least address.
184 When printing symbols, only print symbols with a value of at
186 least address.
187 --stop-address=<address>
189 When disassembling, only disassemble up to, but not including
190 the specified address.
191 When printing relocations, only print the relocations patching
193 offsets up to address.
194 When printing symbols, only print symbols with a value up to ad‐
196 dress.
197 --symbolize-operands
199 When disassembling, symbolize a branch target operand to print a
200 label instead of a real address.
201 When printing a PC-relative global symbol reference, print it as
203 an offset from the leading symbol.
204 Only works with PowerPC objects or X86 linked images.
206 Example:
208 A non-symbolized branch instruction with a local target
209 and pc-relative memory access like
210 cmp eax, dword ptr [rip + 4112]
212 jge 0x20117e <_start+0x25>
213 might become
215 <L0>:
217 cmp eax, dword ptr <g>
218 jge <L0>
219 --triple=<string>
221 Target triple to disassemble for, see --version for available
222 targets.
223 -w, --wide
225 Ignored for compatibility with GNU objdump.
226 --x86-asm-syntax=<style>
228 Deprecated. When used with --disassemble, choose style of code
229 to emit from X86 backend. Supported values are:
230 att AT&T-style assembly
232 intel Intel-style assembly
234 The default disassembly style is att.
236 -z, --disassemble-zeroes
238 Do not skip blocks of zeroes when disassembling.
239 @<FILE>
241 Read command-line options and commands from response file
242 <FILE>.
243
245 --arch=<architecture>
246 Specify the architecture to disassemble. see --version for
247 available architectures.
248 --archive-member-offsets
250 Print the offset to each archive member for Mach-O archives (re‐
251 quires --archive-headers).
252 --bind Display binding info
254 --data-in-code
256 Display the data in code table.
257 --dis-symname=<name>
259 Disassemble just the specified symbol's instructions.
260 --dylibs-used
262 Display the shared libraries used for linked files.
263 --dsym=<string>
265 Use .dSYM file for debug info.
266 --dylib-id
268 Display the shared library's ID for dylib files.
269 --exports-trie
271 Display exported symbols.
272 --function-starts
274 Print the function starts table for Mach-O objects.
275 -g Print line information from debug info if available.
277 --full-leading-addr
279 Print the full leading address when disassembling.
280 --indirect-symbols
282 Display the indirect symbol table.
283 --info-plist
285 Display the info plist section as strings.
286 --lazy-bind
288 Display lazy binding info.
289 --link-opt-hints
291 Display the linker optimization hints.
292 -m, --macho
294 Use Mach-O specific object file parser. Commands and other op‐
295 tions may behave differently when used with --macho.
296 --no-leading-headers
298 Do not print any leading headers.
299 --no-symbolic-operands
301 Do not print symbolic operands when disassembling.
302 --non-verbose
304 Display the information for Mach-O objects in non-verbose or nu‐
305 meric form.
306 --objc-meta-data
308 Display the Objective-C runtime meta data.
309 --private-header
311 Display only the first format specific file header.
312 --rebase
314 Display rebasing information.
315 --rpaths
317 Display runtime search paths for the binary.
318 --universal-headers
320 Display universal headers.
321 --weak-bind
323 Display weak binding information.
324
326 --symbol-description
327 Add symbol description to disassembly output.
328
330 To report bugs, please visit <‐
331 https://github.com/llvm/llvm-project/labels/tools:llvm-objdump/>.
332
334 llvm-nm(1), llvm-otool(1), llvm-readelf(1), llvm-readobj(1)
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337 Maintained by the LLVM Team (https://llvm.org/).
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340 2003-2022, LLVM Project
34114 2022-03-23 LLVM-OBJDUMP(1)