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+December 13, 2011
+ Now prints missing line table column number as 0 (now
+ matching the DWARF spec), the previous
+ practice of printing -1 was always wrong.
+ And prints the DWARF3/4 new line table fields (when present).
+October 29, 2011
+ Added support for printing .debug_types (type unit) data.
+October 26, 2011
+ Added new features to Makefile.in and documented in README
+ how to build dwarfdump with headers or libraries in
+ non-standard places.
+October 23, 2011
+ By default the various places with string option values
+ and file paths all use URI transformation on input and
+ if the transformation does anything at all dwarfdump reports
+ the input and transformed strings. This makes it easy
+ to deal with strings and expressions and file paths
+ that are difficult to express in a shell (or that getopt
+ mangles). Options -q and -U give you control over this process.
+October 07, 2011
+ The -x abi=mips frame register abi in dwarfdump.conf is now
+ usable with modern MIPS objects as well as old IRIX objects.
+ There are other mips-* frame register setups described
+ in dwarfdump.conf for anyone testing that nothing new has
+ been added that conflicts with old IRIX/MIPS frame generation.
+June 04, 2011
+ Error checking is now distinct from section printing, making
+ error checking (the -k options) much easier to work with on
+ large objects.
+ So compiler-created errors can be found, the error reporting
+ now prints context information.
+March 29, 2011
+ Added many new correctness tests. Changed the format of
+ various items (line data prints in a more compact form, numbers
+ are more uniformly hexadecimal fixed length where that makes sense).
+ All the source files are uniformly indented to a multiple of 4
+ characters and all intent-tabs in the source have been removed.
+ Major logic changes involved changing error-reporting to be
+ more detailed and adding new tests for incorrect DWARF.
+ Now reports error summary by the compiler name, not just overall.
+January 26, 2010
+ Changed the default frame-data register names from MIPS to
+ a generic set of registers.
+ Try '-x abi=mips' to get the traditional old MIPS register
+ naming.
+June 22, 2009
+ Added the -S option to dwarfdump.
+June 10, 2009
+ Moved the gennames.c code to libdwarf.
+May 4, 2009
+ Replaced awk source-generation of certain functions
+ with new gennames.c code.
+ Now we can print an object with an address_size that
+ varies by compilation unit.
+April 4, 2009
+ Corrected aspects of the frame-printing by ensuring we pass
+ all the information libdwarf needs for fully consistent behavior.
+ Three newly defined libdwarf calls calls made to ensure
+ that better behavior (specifically having dwarfdump consistently
+ recognize when registers are the cfa, undefined-value or same-value
+ pseudo registers). Updated dwarfdump.conf to set these same
+ things consistently.
+Mar 22, 2009
+ The -f and -F flags no longer also imply -i (it just
+ did not make sense to tie them (cannot recall why
+ it might have been tied before).
+Mar 20, 2009
+ Moved print_* functions from print_sections.c to individual
+ source files. Hopefully making the code a bit easier
+ to read.
+Feb 16, 2009
+ Added the -C option. It is a sort of 'pedantic' option
+ as it turns on warnings about certain commonly used
+ non-standard tag->tag and tag->attr relationships.
+ Added the tag_attr_ext.list tag_tree_ext.list files which
+ define the 'common use' extensions.
+Feb 14, 2009
+ Added configure option --enable-nonstandardprintf
+ which makes it easy to get printf of Dwarf_Unsigned (etc)
+ types correct even for non-standard compilers.
+December 30, 2008
+ Now we print the .debug_ranges section (with -N)
+ and the data for DW_AT_ranges (with -i).
+December 8, 2008
+ The -M option now causes printing of FORM details.
+ And -v adds details about abbreviation 'indexes' into
+ an abbreviation table (.debug_abbrev)
+ providing more detail for folks debugging or
+ improving their understanding of DWARF data.
+April 9, 2008
+ Added -H <num> to limit the number of compilation-units/FDEs
+ dwarfdump prints in one run. Added -n to eliminate function-name
+ printing in .debug_frame output (with a large-enough debug_info
+ section function-name printing is too slow). The function name
+ printing will be fixed in another release.
+December 8, 2007
+ Had to add an ugly configure conditional as libelf has
+ unconditional use of off64_t in recent libelf.h
+July 3, 2007
+ Now with -v dwarf expression blocks in frame operations
+ are printed expanded out.
+July 2, 2007
+ Added a new abi -x abi=general usable for any cpu with
+ up to 1000 registers.
+May 7, 2007
+ Sun Microsystems contributes new dwarf.h extensions and a new -G option
+ to dwarfdump -i (so one can see the 'global' offset to DIEs).
+ Thanks to Chris Quenelle of Sun.
+April 17, 2006
+ New -x name=<conf file> -x abi=<abiname> and configuration file
+ enable sensible printing of a wide range of .debug_frame eh_frame
+ correctly without recompiling dwarfdump or touching libdwarf.h or
+ dwarf.h.
+March 29, 2005
+ Now handles DWARF3. For non-MIPS objects, the list of register
+ names in print_sections.c is not appropriate, #define
+ DWARFDUMP_TURN_OFF_MIPS_REG_NAMES to turn off the MIPS names.
+December 1, 2005
+ Added new DWARF3 TAGs and ATtributes to the -k lists,
+ clarified the -k reporting, and made the build more robust
+ in the face of errors in the *.list relationship-spec-files.
+
+August 1, 2005
+ Now print_die.c deals with long loclists without a coredump.
+ Added esb.h esb.c (and testesb.c for testing) to encapsulate
+ getting space for possibly-long strings.
+ Now print_die.c uses snprintf() not sprintf (hopefully this
+ will not inconvenience anyone, snprintf() has been available
+ on most systems for years now).
+ Altered print of location lists a little bit - for better appearance.
+
+July 15, 2005
+ Now completely frees all allocated memory. Various
+ routines were not calling dealloc() code and
+ new libdwarf dealloc routines are now used where those
+ are needed.
+
+ Now prints DWARF3 .debug_pubtypes section (with -a or -y).
+ The .debug_pubtypes section and SGI-specific .debug_typenames
+ are equvalent so they are treated alike.
+
+Mar 21, 2005
+ The -f flag now prints only .debug_frame data. The .eh_frame section
+ (GNU exceptions data) now prints with -F (not -a).
+ Printing gcc 3.3 or 3.4 .eh_frame with zR augmentation
+ does not work at this time, so do not use -F
+ to print such an object.
+ The line section print now prints a CU-DIE offset for each such DIEs
+ line information. This makes it much easier to correctly associate
+ -l (or -v -l) output with -v -v -l when debugging a faulty
+ linetable in an executable.
+ With -v -v -l (two -v) the output of line info continues to be a
+ completely different format than zero or one -v, the two-v
+ form showing the detailed line table opcodes.
+ With g++ 3.3.3 one sees bad line addresses at times as the
+ DW_LNE_set_address address for header files do not always
+ get their relocations applied. I am told this is fixed in 3.4.x.
+
+
+Mar 18, 2005
+ In correcting printing of macro information the format
+ of the macro (-m) output has changed substantially.
+ Much more complete now. Still could use enhancement.
+
+Oct 28, 2004
+ Updated contact address in copyright: SGI moved 1/4 mile
+ to a new address: 1500 Crittenden Lane.
+
+Oct 02, 2003
+ Now fully supports .debug_loc section.
+
+June 14, 2001
+ Now calling a new function dwarf_get_arange_cu_header_offset()
+ in libdwarf and printing the returned cu header offset for
+ aranges entries. Making it easier to track down internal
+ errors in the dwarf2 data. Also added small other
+ consistency checks, printing a message and exit()ing on
+ error.
+
+April 14, 2000
+ The libdwarf copyright has changed to
+ version 2.1 of the GNU Lesser General Public License.
+ Anyone holding a version of libdwarf that was published
+ before this new copyright
+ is allowed to use
+ the copyright published in that earlier libdwarf source
+ on the earlier source
+ or to use
+ this new copyright on the earlier source,
+ at their option.
+
+July 21, 1999
+ Added gnu extensions to the frame information printer
+ and handling for egcs eh_frame printing.
+ libdwarf changes mean this now can print little-endian
+ object dwarf on a big-endian system and vice-versa.
+
+December, 1998
+ added dwarfdump to the dwarf public source distribution.
+
+June, 1994
+ libdwarf consumer interface changed completely so updated to match.
+
+May, 1993
+ Initial version of dwarfdump for dwarf version 2
+ written at sgi.