gdb on Alpha/Tru64 Unix ??

gdb on Alpha/Tru64 Unix ??

[henri delebecque]

Hello,

I'm trying to install gdb on an Alpha running a Tru64 Unix ver 5.0A, with a new
gcc version 3.0.4, without success, with the new 5.1.1, or older 
(until 4.18) versions.

The problem (with the 5.1.1) is when I try to launch gdb to debug, even the
simplest program.
I have the following message:
mdebugread.c:2448:gdb-internal-error:Scetion index is unintialized.

I have similar problem with the 5.0 version, when the 4.18 doesn't compile
successfully.

Please, could you help me ?
Thanks
-- 
______________________________________________________________
| Henri Delebecque                        delebecq@supelec.fr |
| Webmaster                                                   |
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| FRANCE                                                      |
|_____________________________________________________________|

Re: gdb on Alpha/Tru64 Unix ??

[Joel Brobecker]

[-- Attachment #1: Type: text/plain, Size: 485 bytes --]

> mdebugread.c:2448:gdb-internal-error:Scetion index is unintialized.

You may want to try the following patch. I have intended to discuss this
matter with the rest of the GDB community, but haven't had time yet.
Anyway, this is not what will be the final fix (a bit too... brutal...),
but it should allow you to get past this internal error (note that the
error in itself is non-fatal, so you can just answer continue->yes and
dump_core->no, and everything should be fine).

-- 
Joel

[-- Attachment #2: mdebugread.c.diff --]
[-- Type: text/plain, Size: 2379 bytes --]

Index: mdebugread.c
===================================================================
RCS file: /nile.c/cvs/Dev/gdb/gdb-5/gdb/mdebugread.c,v
retrieving revision 1.1.1.1
diff -c -3 -p -r1.1.1.1 mdebugread.c
*** mdebugread.c	2 Sep 2000 21:56:11 -0000	1.1.1.1
--- mdebugread.c	21 Mar 2002 18:29:44 -0000
*************** parse_partial_symbols (struct objfile *o
*** 2438,2455 ****
--- 2453,2500 ----
  	  break;
  	case stLabel:
  	  /* Label */
+ 
+           /* On certain plateforms, some extra label symbols can be
+              generated by the linker. One possible usage for this kind
+              of symbols is to represent the address of the begining of a
+              given section. For instance, on Tru64 5.1, the address of
+              the _ftext label is the start address of the .text section.
+ 
+              The storage class of these symbols is usually directly
+              related to the section to which the symbol refers. For
+              instance, on Tru64 5.1, the storage class for the _fdata
+              label is scData, refering to the .data section.
+ 
+              It is actually possible that the section associated to the
+              storage class of the label does not exist. On True64 5.1
+              for instance, the libm.so shared library does not contain
+              any .data section, although it contains a _fpdata label
+              which storage class is scData... Since these symbols are
+              usually useless for the debugger user anyway, we just
+              discard these symbols.
+            */
+           
  	  if (SC_IS_TEXT (ext_in->asym.sc))
  	    {
+               if (objfile->sect_index_text == -1)
+                 continue;
+                 
  	      ms_type = mst_file_text;
  	      svalue += ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile));
  	    }
  	  else if (SC_IS_DATA (ext_in->asym.sc))
  	    {
+               if (objfile->sect_index_data == -1)
+                 continue;
+ 
  	      ms_type = mst_file_data;
  	      svalue += ANOFFSET (objfile->section_offsets, SECT_OFF_DATA (objfile));
  	    }
  	  else if (SC_IS_BSS (ext_in->asym.sc))
  	    {
+               if (objfile->sect_index_bss == -1)
+                 continue;
+ 
  	      ms_type = mst_file_bss;
  	      svalue += ANOFFSET (objfile->section_offsets, SECT_OFF_BSS (objfile));
  	    }