RE: [gdb-7.0 release] 2009-09-02 status and proposed plan

["Pierre Muller" <muller@ics.u-strasbg.fr>]

Here it is (sorry for the delay):
muller@osol09:/usr/local/src/gdbcvs/build/gdb$ readelf -S /usr/lib/ld.so.1
There are 32 section headers, starting at offset 0x4613c:

Section Headers:
  [Nr] Name              Type            Addr     Off    Size   ES Flg Lk
Inf Al
  [ 0]                   NULL            00000000 000000 000000 00      0
0  0
  [ 1] .SUNW_syminfo     VERDEF          000000d4 0000d4 000290 04  AI  4
14  4
  [ 2] .hash             HASH            00000364 000364 000524 04   A  4
0  4
  [ 3] .SUNW_ldynsym     LOOS+ffffff3    00000888 000888 0023b0 10   A  5
23b  4
  [ 4] .dynsym           DYNSYM          00002c38 002c38 000a40 10   A  5
1  4
  [ 5] .dynstr           STRTAB          00003678 003678 0020b3 00  AS  0
0  1
  [ 6] .SUNW_version     VERNEED         0000572c 00572c 000060 01   A  5
3  4
  [ 7] .SUNW_version     VERDEF          0000578c 00578c 000038 01   A  5
2  4
  [ 8] .SUNW_versym      VERSYM          000057c4 0057c4 000148 02   A  4
0  4
  [ 9] .SUNW_dynsymsort  LOOS+ffffff1    0000590c 00590c 000758 04   A  3
0  4
  [10] .SUNW_reloc       REL             00006064 006064 0008c8 08   A  4
0  4
  [11] .rel.plt          REL             0000692c 00692c 000320 08  AI  4
c  4
  [12] .plt              PROGBITS        00006c4c 006c4c 000650 10  AX  0
0  4
  [13] .text             PROGBITS        000072a0 0072a0 020f5b 00  AX  0
0 16
  [14] .init             PROGBITS        00028200 028200 000013 00  AX  0
0 16
  [15] .fini             PROGBITS        00028220 028220 000013 00  AX  0
0 16
  [16] .rodata           PROGBITS        00028238 028238 004340 00   A  0
0  8
  [17] .rodata1          PROGBITS        0002c578 02c578 0005ba 00   A  0
0  4
  [18] .data             PROGBITS        0003d000 02d000 0007b3 00  WA  0
0 4096
  [19] .got              PROGBITS        0003d7b4 02d7b4 0002f8 04  WA  0
0  4
  [20] .dynamic          DYNAMIC         0003daac 02daac 0001b0 08  WA  5
0  4
  [21] .bssf             PROGBITS        0003dc5c 02dc5c 000000 00  WA  0
0  1
  [22] .picdata          PROGBITS        0003dc60 02dc60 000860 00  WA  0
0  8
  [23] .bss              NOBITS          0003e4c0 02e4c0 00138c 00  WA  0
0  8
  [24] .note             NOTE            00000000 02e4c0 00002e 01      0
0  4
  [25] .symtab           SYMTAB          00000000 02e4f0 003cd0 10     26
32a  4
  [26] .strtab           STRTAB          00000000 0321c0 00231d 00   S  0
0  1
  [27] .comment          PROGBITS        00000000 0344dd 000027 00      0
0  1
  [28] .compcom          PROGBITS        00000000 034508 00c0a6 00      0
0  8
  [29] .shstrtab         STRTAB          00000000 0405ae 000130 00   S  0
0  1
  [30] .SUNW_signature   LOOS+ffffff6    00000000 0406de 00010e 00   p  0
0  1
  [31] .SUNW_ctf         PROGBITS        00000000 040808 005931 00     25
0  4
Key to Flags:
  W (write), A (alloc), X (execute), M (merge), S (strings)
  I (info), L (link order), G (group), x (unknown)
  O (extra OS processing required) o (OS specific), p (processor specific)
Segmentation Fault (core dumped)


Maybe the problem comes from the fact that there are two .SUNW_version
sections with
different types?
The segmentation fault is also not very pleasant...

Pierre Muller
Pascal language support maintainer for GDB



> -----Message d'origine-----
> De : Paul Pluzhnikov [mailto:ppluzhnikov@google.com]
> Envoyé : Friday, September 04, 2009 5:07 PM
> À : Pierre Muller
> Cc : Joel Brobecker; gdb@sourceware.org
> Objet : Re: [gdb-7.0 release] 2009-09-02 status and proposed plan
> 
> On Fri, Sep 4, 2009 at 3:19 AM, Pierre Muller<muller@ics.u-strasbg.fr>
> wrote:
> 
> >  I checked your patch and it does solve the problem.
> > Instead of a internal_error, I get a warning
> > about .SUNW_version and .SUNW_versym sections
> > between intertwined.
> 
> Thanks Pierre.
> 
> Could you please post output from
>   readelf -S <objfile-mentioned-in-warning>
> 
> That should help understanding why there is overlap in the first place.
> 
> Thanks,
> --
> Paul Pluzhnikov