ld64-136.tar.gz

[apple/ld64.git] / ld64-134.9 / doc / man / man1 / unwinddump.1

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-.Dd November 7, 2008
-.Dt unwinddump 1
-.Os Darwin
-.Sh NAME
-.Nm unwinddump
-.Nd "Displays compact unwind information in an executable"
-.Sh SYNOPSIS
-.Nm
-.Op Fl arch Ar arch-name 
-.Ar file(s)
-.Sh 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 compact unwind encodings.  
-.Pp
-The unwinddump tool displays the content of the __TEXT/__unwind_info section.
-.Sh SEE ALSO
-.Xr ld 1
-.Xr dwarfdump 1