+
−
+
−
-------------------------------------------------------------+
−
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+
−
-------------------------------------------------------------+
−