OBJDUMP(1) OBJDUMP(1) objdump - objdump [-a|--archive-headers] [-b _bfd|--target=_bfd] [-C|--demangle[=] ] [-d|--disassemble[=]] [-D|--disassemble-all] [-z|--disassemble-zeroes] [-EB|-EL|--endian={big | little }] [-f|--file-headers] [-F|--file-offsets] [--file-start-context] [-g|--debugging] [-e|--debugging-tags] [-h|--section-headers|--headers] [-i|--info] [-j |--section=] [-l|--line-numbers] [-S|--source] [--source-comment[=]] [-m |--architecture=] [-M |--disassembler-options=] [-p|--private-headers] [-P |--private=] [-r|--reloc] [-R|--dynamic-reloc] [-s|--full-contents] [-Z|--decompress] [-W[lLiaprmfFsoORtUuTgAck]| --dwarf[=rawline,=decodedline,=info,=abbrev,=pubnames,=aranges,=macro,=frames,=frames-interp,=str,=str-offsets,=loc,=Ranges,=pubtypes,=trace_info,=trace_abbrev,=trace_aranges,=gdb_index,=addr,=cu_index,=links]] [-WK|--dwarf=follow-links] [-WN|--dwarf=no-follow-links] [-wD|--dwarf=use-debuginfod] [-wE|--dwarf=do-not-use-debuginfod] [-L|--process-links] [--ctf=] [--sframe=] [-G|--stabs] [-t|--syms] [-T|--dynamic-syms] [-x|--all-headers] [-w|--wide] [--start-address=] [--stop-address=] [--no-addresses] [--prefix-addresses] [--[no-]show-raw-insn] [--adjust-vma=] [--show-all-symbols] [--dwarf-depth=n] [--dwarf-start=n] [--ctf-parent=] [--no-recurse-limit|--recurse-limit] [--special-syms] [--prefix=] [--prefix-strip=] [--insn-width=] [--visualize-jumps[=color|=extended-color|=off] [--disassembler-color=[off|terminal|on|extended] [-U ] [--unicode=] [-V|--version] [-H|--help] _... objdump . . . _... . objdump . . -a,-d,-D,-e,-f,-g,-G,-h,-H,-p,-P,-r,-R,-s,-S,-t,-T,-V,-x. -a --archive-header _ ( ls -l). ar tv objdump -a . --adjust-vma= . a.out. -b _bfd --target=_bfd _bfd. objdump . objdump -b oasys -m vax -h fu.o (-h) fu.o (-m) VAX Oasys. -i. -C --demangle[=style] (demangle) . C++ . . . --recurse-limit --no-recurse-limit --recursion-limit --no-recursion-limit . . 2048 . (demangle) . . -g --debugging . STABS C. STABS -W DWARF . -e --debugging-tags -g ctags. -d --disassemble --disassemble= . . ( ) () . . . --dwarf=follow-links . -D --disassemble-all -d bss . -j . . -d objdump . -D . -d -D . ARM . --dwarf=follow-links . --no-addresses . --no-show-raw-insn . --prefix-addresses . . -EB -EL --endian={big|little} (endianness) . . S-records. -f --file-headers _. -F --file-offsets . . . --file-start-context / ( -S) . -h --section-headers --headers . -Ttext -Tdata -Tbss ld. a.out . ld objdump -h . . READONLY NOREAD . NOREAD objdump . -H --help objdump . -i --info -b -m. -j --section= . . -L --process-links . -WK . -l --line-numbers ( ) . -d -D -r. -m --architecture= . S-records. -i. . foo:bar bar foo. objdump . ARM . -marm. -M --disassembler-options= . . -M . ARC dsp DSP spfp FPX dpfp FPX quarkse_em QuarkSE-EM fpuda fpus FPU fpud FPU . (immediates) hex. . cpu=... (ISA) -m ELF. ARC EM HS ISA ELF EM HS. - . -mcpu=.... ARM . -M reg-names-std () ARM 13 'sp' 14 'lr' 15 'pc'. -M reg-names-apcs ARM -M reg-names-raw r . APCS -M reg-names-atpcs -M reg-names-special-atpcs ARM/Thumb. ( ). ARM Thumb --disassembler-options=force-thumb. thumb . AArch64 -M no-aliases -M notes. x86 -m . "x86-64" "i386" "i8086" . "intel" "att" intel AT&T. "amd64" "intel64" AMD64 ISA Intel64 ISA. "intel-mnemonic" "att-mnemonic" (mnemonic) intel AT&T. : "intel-mnemonic" "intel" "att-mnemonic" "att". "addr64" "addr32" "addr16" "data32" "data16" . "x86-64" "i386" "i8086" . "suffix" AT&T Intel . PowerPC -M raw . "rlwinm" "clrlwi" "addi" "li". -m gas (CPU) . : 403 405 440 464 476 601 603 604 620 7400 7410 7450 7455 750cl 821 850 860 a2 booke booke32 cell com e200z2 e200z4 e300 e500 e500mc e500mc64 e500x2 e5500 e6500 efs power4 power5 power6 power7 power8 power9 power10 power11 ppc ppc32 ppc64 ppc64bridge ppcps pwr pwr2 pwr4 pwr5 pwr5x pwr6 pwr7 pwr8 pwr9 pwr10 pwr11 pwrx titan vle future. 32 64 64 . altivec any lsp htm vsx spe spe2 . any (opcode) binutils . BFD . RISC-V : "max" . " " ISA ( ) . ELF ISA ISA ISA ("rv64gc") . "numeric" ABI (: "x2" "sp"). "no-aliases" (canonical). ("addi sp,sp,-128" "c.addi16sp sp,-128"). "priv-spec=SPEC" CSR (: 1.10 1.11 1.12 1.13). MIPS . : "no-aliases" 'raw' () (pseudo). 'daddu' 'or' 'move' 'sll' 'nop' . "msa" MSA. "virt" ASE . "xpa" ASE (XPA). "gpr-names=ABI" GPR ( ) ABI . GPR ABI . "fpr-names=ABI" FPR ( ) ABI . FPR . "cp0-names=ARCH" CP0 ( 0) ARCH. CP0 . "hwr-names=ARCH" HWR ( "rdhwr") ARCH. HWR . "reg-names=ABI" GPR FPR ABI . "reg-names=ARCH" ( CP0 HWR) . ABI ARCH numeric . ABI ARCH --help. VAX -M entry:0xf00ba. VAX ( ROM) . VAX . -p --private-headers . . . -P options --private=options . options ( ). XCOFF : "header" "aout" "sections" "syms" "relocs" "lineno," "loader" "except" "typchk" "traceback" "toc" "ldinfo" PE : "header" "sections" . ELF. -r --reloc (relocation) . -d -D . -R --dynamic-reloc . . -r -d -D . : objdump RELR. readelf. -s --full-contents -j . bss. . -Z . -S --source . -d. --show-all-symbols . --source-comment[=txt] -S txt. txt . txt "# " ( ). --prefix=prefix prefix -S. --prefix-strip=level . --prefix=prefix. --show-raw-insn . --prefix-addresses. --no-show-raw-insn . --prefix-addresses. --insn-width=width width . --visualize-jumps[=color|=extended-color|=off] ASCII . =color . =extended-color 8 . visualize-jumps visualize-jumps=off. --disassembler-color=off --disassembler-color=terminal --disassembler-color=on|color|colour --disassembler-color=extended|extended-color|extended-colour . . . on . terminal . extended-color on 8 . . off . -W[lLiaprmfFsoORtUuTgAckK] --dwarf[=rawline,=decodedline,=info,=abbrev,=pubnames,=aranges,=macro,=frames,=frames-interp,=str,=str-offsets,=loc,=Ranges,=pubtypes,=trace_info,=trace_abbrev,=trace_aranges,=gdb_index,=addr,=cu_index,=links,=follow-links] DWARF . () . . : "a" "=abbrev" .debug_abbrev. "A" "=addr" .debug_addr. "c" "=cu_index" .debug_cu_index / .debug_tu_index. "f" "=frames" .debug_frame. "F" "=frames-interp" .debug_frame. "g" "=gdb_index" .gdb_index / .debug_names. "i" "=info" .debug_info. : --dwarf-depth --dwarf-start. "k" "=links" .gnu_debuglink .gnu_debugaltlink .debug_sup . dwarf (dwo) DW_AT_GNU_dwo_name DW_AT_dwo_name .debug_info. "K" "=follow-links" . . DWARF . - . N. binutils --enable-follow-debug-links=yes --enable-follow-debug-links=no. . - debuginfod binutils debuginfod DEBUGINFOD_URLS. . =do-not-use-debuginfod. "N" "=no-follow-links" . "D" "=use-debuginfod" debuginfod . . "E" "=do-not-use-debuginfod" debuginfod . "l" "=rawline" .debug_line . "L" "=decodedline" .debug_line. "m" "=macro" .debug_macro / .debug_macinfo. "o" "=loc" .debug_loc / .debug_loclists. "O" "=str-offsets" .debug_str_offsets. "p" "=pubnames" .debug_pubnames / .debug_gnu_pubnames. "r" "=aranges" .debug_aranges. "R" "=Ranges" .debug_ranges / .debug_rnglists. "s" "=str" .debug_str .debug_line_str / .debug_str_offsets. "t" "=pubtype" .debug_pubtypes / .debug_gnu_pubtypes. "T" "=trace_aranges" .trace_aranges. "u" "=trace_abbrev" .trace_abbrev. "U" "=trace_info" .trace_info. : .debug_static_funcs .debug_static_vars debug_weaknames . --dwarf-depth=n ".debug_info" n . --debug-dump=info. DIEs 0 n . n DIE n . n . --dwarf-start=n DIEs DIE n. --debug-dump=info. DIEs DIE n. DIE . --dwarf-depth. --dwarf-check Dwarf. --ctf[=] CTF . CTF . .ctf ld. --ctf-parent= CTF CTF . .ctf "ctf_link_set_memb_name_changer" . CTF --ctf-parent . --ctf-parent-section= CTF . ELF . CTF objcopy ELF CTF . --sframe[=] SFrame . .sframe ld. -G --stabs . .stab .stab.index .stab.excl ELF. ( Solaris 2.0) ".stab" ELF. --syms. --start-address= . -d -r -s. --stop-address= . -d -r -s. -t --syms . nm . . : [ 4](sec 3)(fl 0x00)(ty 0)(scl 3) (nx 1) 0x00000000 .bss [ 6](sec 1)(fl 0x00)(ty 0)(scl 2) (nx 0) 0x00000000 fred sec fl ty scl nx . . ELF : 00000000 l d .bss 00000000 .bss 00000000 g .text 00000000 fred ( ). . . *ABS* ( ) *UND* . . . 7 : "l" "g" "u" "!" (l) (g) (u) ( ) (!). . GNU ELF. . "w" (w) ( ). "C" (C) ( ). "W" (W) ( ). . "I" "i" (I) (i) ( ). "d" "D" (d) (D) ( ). "F" "f" "O" (F) (f) (O) ( ). -T --dynamic-syms . . nm -D (--dynamic). --syms . . --special-syms . -U [d|i|l|e|x|h] --unicode=[default|invalid|locale|escape|hex|highlight] UTF-8 . (--unicode=default) . --unicode=locale . --unicode=hex --unicode=invalid . --unicode=escape (\uxxxx) --unicode=highlight ( ). . -V --version objdump . -x --all-headers . -x -a -f -h -p -r -t. -w --wide 80 . . -z --disassemble-zeroes . . -Z --decompress -Z -s. objdump . @ . @ . . . . ( ) . @ . nm(1) readelf(1) Info binutils. (c) 1991-2026 . / (GNU Free Documentation License) 1.3 . "GNU Free Documentation License". 3 . . : . binutils-2.46 9 2026 OBJDUMP(1)