doc/man/man1/unwinddump.1

   1 .Dd November 7, 2008
   2 .Dt unwinddump 1
   3 .Os Darwin
   4 .Sh NAME
   5 .Nm unwinddump
   6 .Nd "Displays compact unwind information in an executable"
   7 .Sh SYNOPSIS
   8 .Nm
   9 .Op Fl arch Ar arch-name
  10 .Ar file(s)
  11 .Sh DESCRIPTION
  12 When a C++ (or x86_64 Objective-C) exception is thrown, the runtime must unwind
  13 the stack looking for some function to catch the exception.  Traditionally,
  14 the unwind information is stored in the __TEXT/__eh_frame section of each executable
  15 as Dwarf CFI (call frame information).  Beginning in Mac OS X 10.6, the unwind
  16 information is also encoded in the __TEXT/__unwind_info section using a two-level
  17 lookup table of compact unwind encodings.
  18 .Pp
  19 The unwinddump tool displays the content of the __TEXT/__unwind_info section.
  20 .Sh SEE ALSO
  21 .Xr ld 1
  22 .Xr dwarfdump 1