1LLVM-OBJDUMP(1) LLVM LLVM-OBJDUMP(1)
2
6 llvm-objdump - LLVM's object file dumper
7
9 llvm-objdump [commands] [options] [filenames...]
10
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.
16
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 text 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 -v, --version
78 Display the version of the llvm-objdump executable. Does not
79 stack with other commands.
80 -x, --all-headers
82 Display all available header information. Equivalent to specify‐
83 ing --archive-headers, --file-headers, --private-headers,
84 --reloc, --section-headers, and --syms.
85
87 llvm-objdump supports the following options:
88 --adjust-vma=<offset>
90 Increase the displayed address in disassembly or section header
91 printing by the specified offset.
92 --arch-name=<string>
94 Specify the target architecture when disassembling. Use
95 --version for a list of available targets.
96 -C, --demangle
98 Demangle symbol names in the output.
99 --debug-vars=<format>
101 Print the locations (in registers or memory) of source-level
102 variables alongside disassembly. format may be unicode or ascii,
103 defaulting to unicode if omitted.
104 --debug-vars-indent=<width>
106 Distance to indent the source-level variable display, relative
107 to the start of the disassembly. Defaults to 52 characters.
108 -j, --section=<section1[,section2,...]>
110 Perform commands on the specified sections only. For Mach-O use
111 segment,section to specify the section name.
112 -l, --line-numbers
114 When disassembling, display source line numbers. Implies
115 --disassemble.
116 -M, --disassembler-options=<opt1[,opt2,...]>
118 Pass target-specific disassembler options. Available options:
119 • reg-names-std: ARM only (default). Print in ARM 's instruction
121 set documentation, with r13/r14/r15 replaced by sp/lr/pc.
122 • reg-names-raw: ARM only. Use r followed by the register num‐
124 ber.
125 • no-aliases: AArch64 and RISC-V only. Print raw instruction
127 mnemonic instead of pesudo instruction mnemonic.
128 • numeric: RISC-V only. Print raw register names instead of ABI
130 mnemonic. (e.g. print x1 instead of ra)
131 • att: x86 only (default). Print in the AT&T syntax.
133 • intel: x86 only. Print in the intel syntax.
135 --mcpu=<cpu-name>
137 Target a specific CPU type for disassembly. Specify --mcpu=help
138 to display available CPUs.
139 --mattr=<a1,+a2,-a3,...>
141 Enable/disable target-specific attributes. Specify --mattr=help
142 to display the available attributes.
143 --no-leading-addr
145 When disassembling, do not print leading addresses.
146 --no-print-imm-hex
148 Do not use hex format for immediate values in disassembly output
149 (default).
150 --no-show-raw-insn
152 When disassembling, do not print the raw bytes of each instruc‐
153 tion.
154 --prefix=<prefix>
156 When disassembling with the --source option, prepend prefix to
157 absolute paths.
158 --prefix-strip=<level>
160 When disassembling with the --source option, strip out level
161 initial directories from absolute paths. This option has no ef‐
162 fect without --prefix.
163 --print-imm-hex
165 Use hex format when printing immediate values in disassembly
166 output.
167 -S, --source
169 When disassembling, display source interleaved with the disas‐
170 sembly. Implies --disassemble.
171 --show-lma
173 Display the LMA column when dumping ELF section headers. De‐
174 faults to off unless any section has different VMA and LMAs.
175 --start-address=<address>
177 When disassembling, only disassemble from the specified address.
178 When printing relocations, only print the relocations patching
180 offsets from at least address.
181 When printing symbols, only print symbols with a value of at
183 least address.
184 --stop-address=<address>
186 When disassembling, only disassemble up to, but not including
187 the specified address.
188 When printing relocations, only print the relocations patching
190 offsets up to address.
191 When printing symbols, only print symbols with a value up to ad‐
193 dress.
194 --symbolize-operands
196 When disassembling, symbolize a branch target operand to print a
197 label instead of a real address.
198 When printing a PC-relative global symbol reference, print it as
200 an offset from the leading symbol.
201 Only works with an X86 linked image.
203 Example:
205 A non-symbolized branch instruction with a local target
206 and pc-relative memory access like
207 cmp eax, dword ptr [rip + 4112]
209 jge 0x20117e <_start+0x25>
210 might become
212 <L0>:
214 cmp eax, dword ptr <g>
215 jge <L0>
216 --triple=<string>
218 Target triple to disassemble for, see --version for available
219 targets.
220 -w, --wide
222 Ignored for compatibility with GNU objdump.
223 --x86-asm-syntax=<style>
225 Deprecated. When used with --disassemble, choose style of code
226 to emit from X86 backend. Supported values are:
227 att AT&T-style assembly
229 intel Intel-style assembly
231 The default disassembly style is att.
233 -z, --disassemble-zeroes
235 Do not skip blocks of zeroes when disassembling.
236 @<FILE>
238 Read command-line options and commands from response file
239 <FILE>.
240
242 --arch=<architecture>
243 Specify the architecture to disassemble. see --version for
244 available architectures.
245 --archive-member-offsets
247 Print the offset to each archive member for Mach-O archives (re‐
248 quires --archive-headers).
249 --bind Display binding info
251 --data-in-code
253 Display the data in code table.
254 --dis-symname=<name>
256 Disassemble just the specified symbol's instructions.
257 --dylibs-used
259 Display the shared libraries used for linked files.
260 --dsym=<string>
262 Use .dSYM file for debug info.
263 --dylib-id
265 Display the shared library's ID for dylib files.
266 --exports-trie
268 Display exported symbols.
269 --function-starts
271 Print the function starts table for Mach-O objects.
272 -g Print line information from debug info if available.
274 --full-leading-addr
276 Print the full leading address when disassembling.
277 --indirect-symbols
279 Display the indirect symbol table.
280 --info-plist
282 Display the info plist section as strings.
283 --lazy-bind
285 Display lazy binding info.
286 --link-opt-hints
288 Display the linker optimization hints.
289 -m, --macho
291 Use Mach-O specific object file parser. Commands and other op‐
292 tions may behave differently when used with --macho.
293 --no-leading-headers
295 Do not print any leading headers.
296 --no-symbolic-operands
298 Do not print symbolic operands when disassembling.
299 --non-verbose
301 Display the information for Mach-O objects in non-verbose or nu‐
302 meric form.
303 --objc-meta-data
305 Display the Objective-C runtime meta data.
306 --private-header
308 Display only the first format specific file header.
309 --rebase
311 Display rebasing information.
312 --rpaths
314 Display runtime search paths for the binary.
315 --universal-headers
317 Display universal headers.
318 --weak-bind
320 Display weak binding information.
321
323 --symbol-description
324 Add symbol description to disassembly output.
325
327 To report bugs, please visit <https://bugs.llvm.org/>.
328
330 llvm-nm(1), llvm-otool(1), llvm-readelf(1), llvm-readobj(1)
331
333 Maintained by the LLVM Team (https://llvm.org/).
334
336 2003-2022, LLVM Project
33713 2022-02-02 LLVM-OBJDUMP(1)