linux查看.so文件中函数

例子:

objdump -tT /usr/lib/libpeas-1.0/loaders/libpython3loader.so

nm -D /usr/lib/libpeas-1.0/loaders/libpython3loader.so

$ objdump

Usage: objdump <option(s)> <file(s)>

 Display information from object <file(s)>.

 At least one of the following switches must be given:

  -a, --archive-headers    Display archive header information

  -f, --file-headers       Display the contents of the overall file header

  -p, --private-headers    Display object format specific file header contents

  -P, --private=OPT,OPT... Display object format specific contents

  -h, --[section-]headers  Display the contents of the section headers

  -x, --all-headers        Display the contents of all headers

  -d, --disassemble        Display assembler contents of executable sections

  -D, --disassemble-all    Display assembler contents of all sections

  -S, --source             Intermix source code with disassembly

  -s, --full-contents      Display the full contents of all sections requested

  -g, --debugging          Display debug information in object file

  -e, --debugging-tags     Display debug information using ctags style

  -G, --stabs              Display (in raw form) any STABS info in the file

  -W[lLiaprmfFsoRt] or

  --dwarf[=rawline,=decodedline,=info,=abbrev,=pubnames,=aranges,=macro,=frames,

          =frames-interp,=str,=loc,=Ranges,=pubtypes,

          =gdb_index,=trace_info,=trace_abbrev,=trace_aranges,

          =addr,=cu_index]

                           Display DWARF info in the file

  -t, --syms               Display the contents of the symbol table(s)

  -T, --dynamic-syms       Display the contents of the dynamic symbol table

  -r, --reloc              Display the relocation entries in the file

  -R, --dynamic-reloc      Display the dynamic relocation entries in the file

  @<file>                  Read options from <file>

  -v, --version            Display this program's version number

  -i, --info               List object formats and architectures supported

  -H, --help               Display this information

$ nm --help

Usage: nm [option(s)] [file(s)]

 List symbols in [file(s)] (a.out by default).

 The options are:

  -a, --debug-syms       Display debugger-only symbols

  -A, --print-file-name  Print name of the input file before every symbol

  -B                     Same as --format=bsd

  -C, --demangle[=STYLE] Decode low-level symbol names into user-level names

                          The STYLE, if specified, can be `auto' (the default),

                          `gnu', `lucid', `arm', `hp', `edg', `gnu-v3', `java'

                          or `gnat'

      --no-demangle      Do not demangle low-level symbol names

  -D, --dynamic          Display dynamic symbols instead of normal symbols

      --defined-only     Display only defined symbols

  -e                     (ignored)

  -f, --format=FORMAT    Use the output format FORMAT.  FORMAT can be `bsd',

                           `sysv' or `posix'.  The default is `bsd'

  -g, --extern-only      Display only external symbols

  -l, --line-numbers     Use debugging information to find a filename and

                           line number for each symbol

  -n, --numeric-sort     Sort symbols numerically by address

  -o                     Same as -A

  -p, --no-sort          Do not sort the symbols

  -P, --portability      Same as --format=posix

  -r, --reverse-sort     Reverse the sense of the sort

      --plugin NAME      Load the specified plugin

  -S, --print-size       Print size of defined symbols

  -s, --print-armap      Include index for symbols from archive members

      --size-sort        Sort symbols by size

      --special-syms     Include special symbols in the output

      --synthetic        Display synthetic symbols as well

  -t, --radix=RADIX      Use RADIX for printing symbol values

      --target=BFDNAME   Specify the target object format as BFDNAME

  -u, --undefined-only   Display only undefined symbols

  -X 32_64               (ignored)

  @FILE                  Read options from FILE

  -h, --help             Display this information

  -V, --version          Display this program's version number