diff options
Diffstat (limited to 'libdwarf/CHANGES')
| -rw-r--r-- | libdwarf/CHANGES | 102 |
1 files changed, 102 insertions, 0 deletions
diff --git a/libdwarf/CHANGES b/libdwarf/CHANGES new file mode 100644 index 0000000..88fbcd8 --- /dev/null +++ b/libdwarf/CHANGES @@ -0,0 +1,102 @@ + + +------------------------------------------------------------- +April 14, 2000 davea@sgi.com +Corrected minor bugs in production of 32bit dwarf with +64 bit pointers. Fixed omissions in legal +DIE children of a DIE. Make small changes in +description of regster output in frame information +access. + +------------------------------------------------------------- +Mar 7, 2000 davea@sgi.com +Corrected line table reading so it will handle +reading an object with a diffent number of standard +op codes than at libdwarf compile time. +This was possible all along, but libdwarf did +not do it right. + +------------------------------------------------------------- +Dec 8, 1999 davea@sgi.com +Changed nearly all files. +Adding the capability to read and produce +the new, accepted by committee, but not +released-publically 64bit extension proposal +dwarf data. +This allows dwarf compilation units +with 64bit section offsets and 32bit +sections offsets to be mixed. +So that offsets can grow very large with +64-bit pointer applications (though 64bit pointers +and 64bit offsets are not the same notion). + +In addition, removed all the contents (or nearly all) +of the dwarf_funcs.c dwarf_weaks.c dwarf_vars.c, +and dwarf_types.c, as the data format is identical +to dwarf globals (pubnames) and there is no need +to duplicate all that code. + +All these sections whose contents were gutted are things that +are formatted exactly like pubnames, and all are sgi +extensions. Now the implementation uses pubnames code +(dwarf_global.c) to do the work for all the pubnames-like +sections. + +The (minor, IMO) difference is that in case of an incorrect +dwarf file (leading to libdwarf being unable to process +something in one of the sgi-specific pubnames-like sections) +the dwarf error string may reference pubnames when weaks, +static functions, static variables, or global typenames are +actually the problem. This is fixable, however the price would +appear to be that even globals would need to call a helper +function (to pass in the correct error return). Right now the +dwarf_weaks.c calls the dwarf_global.c function, for example, +with no extra arguments indicating the true section involved. +(Other approaches keeping the original error codes exist. +Producing the code uniquely via macros seems unappealing. +Inline functions would be ok though. This version does not +inline the functions we are talking about, such as +dwarf_global_name_offsets() when called from +dwarf_type_name_offsets().) + +Since these extra sections are SGI only and only really used by +SGI's workshop product, and the performance hit is small, the +extra function calls in reading each seem acceptable. + + +------------------------------------------------------------- +Sep 29,1999 davea@sgi.com +Changed many files, so that it is easy to switch +from 32bit-offset-only (like cygnus +and dwarf2 v 2.0.0) to sgi/mips 64 bit dwarf. +See NEWS for more info on 32bit-offset. + + +------------------------------------------------------------- +Since Oct 95 and before May, 1996 + +Added the function dwarf_get_cie_of_fde() which makes it possible +to remember a single fde/cie set out of a block usefully. + +Enhanced doc of dwarf_bitoffset() + +Added new function dwarf_global_formref() so all reference +forms can be retrieved. + +Fixed bug in retrieving array bounds: was failing to sign extend +formsdata. + +Added function dwarf_get_fde_info_for_all_regs(), which makes +retrieval of the complete set of registers (as needed by +debuggers and exception handlers) effectively N times faster +than getting them one a time where N is the number of registers. + +Added support for exception table handling (really just support +for a reference to an exception table for c++ exceptions). + +Fixed a bug where useless extra space (several megabytes) +were malloc'ed for the abbreviations table by the libdwarf +consumer code. + +davea@sgi.com +------------------------------------------------------------- |