unwinddump(1) BSD General Commands Manual unwinddump(1)
NAME
unwinddump -- Displays compact unwind information in an executable
SYNOPSIS
unwinddump [-arch arch-name] file(s)
DESCRIPTION
When a C++ (or x86_64 Objective-C) exception is thrown, the runtime must unwind the stack looking for some function to catch the exception.
Traditionally, the unwind information is stored in the __TEXT/__eh_frame section of each executable as Dwarf CFI (call frame information).
Beginning in Mac OS X 10.6, the unwind information is also encoded in the __TEXT/__unwind_info section using a two-level lookup table of com-
pact unwind encodings.
The unwinddump tool displays the content of the __TEXT/__unwind_info section.
SEE ALSO
ld(1) dwarfdump(1)
Darwin November 7, 2008 Darwin
