title: readelf-like tool for Mac OS X?
body: <p>Is there a tool for reading Mac OS X binaries that would print information about relocation tables and symbol offsets similar to this <code>readelf</code> output?</p>
  
  <pre><code>readelf -r app
  
  Relocation section '.rel.dyn' at offset 0x5ec contains 2 entries:
   Offset     Info    Type            Sym.Value  Sym. Name
  08049d58  00001706 R_386_GLOB_DAT    00000000   __gmon_start__
  08049d60  00000305 R_386_COPY        08049d60   _ZSt4cout
  
  Relocation section '.rel.plt' at offset 0x5fc contains 13 entries:
   Offset     Info    Type            Sym.Value  Sym. Name
  08049d24  00000107 R_386_JUMP_SLOT   0804868c   print
  08049d28  00000207 R_386_JUMP_SLOT   0804869c   _ZNSt8ios_base4InitC1E
  08049d2c  00000507 R_386_JUMP_SLOT   080486ac   _ZStlsISt11char_traits
  08049d30  00000607 R_386_JUMP_SLOT   080486bc   _ZNSolsEPFRSoS_E
  08049d34  00000707 R_386_JUMP_SLOT   08048664   _init
  08049d38  00000807 R_386_JUMP_SLOT   080486dc   sleep
  08049d3c  00000907 R_386_JUMP_SLOT   080486ec   _ZNKSsixEj
  08049d40  00000b07 R_386_JUMP_SLOT   080486fc   _ZNKSs4sizeEv
  08049d44  00000c07 R_386_JUMP_SLOT   0804870c   __libc_start_main
  08049d48  00000d07 R_386_JUMP_SLOT   08048ae4   _fini
  08049d4c  00001307 R_386_JUMP_SLOT   0804872c   _ZSt4endlIcSt11char_tr
  08049d50  00001507 R_386_JUMP_SLOT   0804873c   __gxx_personality_v0
  08049d54  00001607 R_386_JUMP_SLOT   0804874c   _ZNSt8ios_base4InitD1E
  </code></pre>
  
  <p>In this example, <code>print</code> is a function loaded from a shared library (I wrote) at runtime.  <code>readelf</code> is able to display information about its location inside the <code>app</code> binary.</p>