Enable Support for Dwarf 1, with Gnu Extension

Enable Support for Dwarf 1, with Gnu Extension

[Salvatore Lionetti]

Hi to all,

i xcompiled gdb 6.8 (also tryed 6.7.1) for arch 'powerpc-eabi' new 6.8 version, but have no symbol facility.
This is gdb output:

This GDB was configured as "--host=i686-pc-cygwin --target=powerpc-elf"...
(no debugging symbols found)
(gdb)

It seem that gdb only know (function name <-> address), nothing about C src line mapping, data structure ...

Section in elf:
 17 .debug        087e2166  00000000  00000000  00c0240e  2**0
 18 .line         003a8ca0  00000000  00000000  093e4574  2**0
 19 .debug_srcinfo 00124268  00000000  00000000  0978d214  2**0
 16 .debug_sfnames 000310aa  00000000  00000000  00bd1364  2**0

(seem dwarf 1 with gnu extension)
and compiler is diab
Can anyone give me any hint to handle symbol?
Is there other method to pass symbol to gdb ,es .map, nm ?
Thank you for your attention.

Salvatore

--- Lun 9/6/08, gdb-digest-help@sourceware.org <gdb-digest-help@sourceware.org> ha scritto:
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Data: Lunedì 9 giugno 2008, 14:56

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=0A      ___________________________________ =0AScopri il Blog di Yahoo! Ma=
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gdb-digest@sourceware.org<br>A: s=
alvatorelionetti@yahoo.it<br>Data: Luned=C3=AC 9 giugno 2008,
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<pre>Hi! This is the ezmlm program. I'm managing
the<br>gdb-digest@sourcewa=
re.org mailing list.<br><br>To confirm that you would
like<br><br>   salvat=
orelionetti@yahoo.it<br><br>added to
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o.it@sourceware.org<br><br>Usually, this happens when you just hit
the "rep=
ly" button.<br>If this does not work, simply copy the address and
paste it =
into<br>the "To:" field of a new
message.<br><br>This confirmation serves t=
wo purposes. First, it verifies that I am able<br>to get mail through to
yo=
u. Second, it protects you in case someone<br>forges a subscription
request=
 in your name.<br><br>Some mail programs are broken and cannot
handle long =
addresses. If you<br>cannot reply to this request, instead send a message
t=
o<br>&lt;gdb-request@sourceware.org&gt; and put
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Administrative commands fo=
r the gdb-digest list ---<br><br>I can handle administrative
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atically. Please<br>DO NOT SEND THEM TO THE LIST ADDRESS! If you do, I
will=
 not<br>see them and other subscribers will be annoyed. Instead,
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address:<br><br><br>To subscri=
be to the list, send a message to:<br>  
&lt;gdb-subscribe@sourceware.org&g=
t;<br><br>To remove your address from the list, send a message
to:<br>   &l=
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following for =
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the digest
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ist:<br>   &lt;gdb-digest-subscribe@sourceware.org&gt;<br> 
 &lt;gdb-digest=
-unsubscribe@sourceware.org&gt;<br><br>To get messages 123
through 145 (a m=
aximum of 100 per request), mail:<br>  
&lt;gdb-get.123_145@sourceware.org&=
gt;<br><br>To get an index with subject and author for messages
123-456 , m=
ail:<br>  
&lt;gdb-index.123_456@sourceware.org&gt;<br><br>They are
always =
returned as sets of 100, max 2000 per request,<br>so you'll actually
get 10=
0-499.<br><br>To receive all messages with the same subject as
 message 12345,<br>send an empty message to:<br>  
&lt;gdb-thread.12345@sou=
rceware.org&gt;<br><br>The messages do not really need to be
empty, but I w=
ill ignore<br>their content. Only the ADDRESS you send to
 is
important.<br>=
<br>You can start a subscription for an alternate address,<br>for
example "=
john@host.domain", just add a hyphen and your<br>address (with
'=3D' instea=
d of '@') after the command
word:<br>&lt;gdb-subscribe-john=3Dhost.domain@s=
ourceware.org&gt;<br><br>To stop subscription for this address,
mail:<br>&l=
t;gdb-unsubscribe-john=3Dhost.domain@sourceware.org&gt;<br><br>In
both case=
s, I'll send a confirmation message to that address. When<br>you
receive it=
, simply reply to it to complete your subscription.<br><br>If
despite follo=
wing these instructions, you do not get the<br>desired results, please
cont=
act my owner at<br>gdb-owner@sourceware.org. Please be patient, my owner
is=
 a<br>lot slower than I am ;-)<br><br>--- Enclosed is a copy
of
 the
 request I received.<br><br>Return-Path:
&lt;anonymous@sourceware.org&gt;<b=
r>Received: (qmail 16635 invoked by uid 48); 9 Jun 2008 12:54:46
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l@sourceware.org&gt;<br>From: anonymous@sourceware.org<br>To:
gdb-digest-su=
bscribe-salvatorelionetti=3Dyahoo.it@sourceware.org</pre></blockquote></td>=
</tr></table><br>=0A=0A=0A=0A=0A=0A      <hr
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Re: Enable Support for Dwarf 1, with Gnu Extension

[Daniel Jacobowitz]

On Tue, Jun 10, 2008 at 09:12:44AM +0000, Salvatore Lionetti wrote:
> It seem that gdb only know (function name <-> address), nothing
> about C src line mapping, data structure ...

Sorry, support for DWARF 1 has been removed.  GDB 6.6 was the last
release to support DWARF 1.

-- 
Daniel Jacobowitz
CodeSourcery

Re: Enable Support for Dwarf 1, with Gnu Extension

[Salvatore Lionetti]

Hi,

Many thanks!
I've just compiled gdb 6.6, with insight, and see symbol but some time got:
ptype a
<incomplete type>
or gdb seem to have difficult in determine next address (so put breakpoint in wrong place so program many time go running...)

Have you ever heard about a fix on this?
Some link to have info?
(ok: is much simpler work with dwarf2, but seem we have pb with C++ binding of newer version of diab)
Have a good day


--- Mar 10/6/08, Daniel Jacobowitz <drow@false.org> ha scritto:

> Da: Daniel Jacobowitz <drow@false.org>
> Oggetto: Re: Enable Support for Dwarf 1, with Gnu Extension
> A: "Salvatore Lionetti" <salvatorelionetti@yahoo.it>
> Cc: gdb@sourceware.org
> Data: Martedì 10 giugno 2008, 14:35
> On Tue, Jun 10, 2008 at 09:12:44AM +0000, Salvatore Lionetti
> wrote:
> > It seem that gdb only know (function name <->
> address), nothing
> > about C src line mapping, data structure ...
> 
> Sorry, support for DWARF 1 has been removed.  GDB 6.6 was
> the last
> release to support DWARF 1.
> 
> -- 
> Daniel Jacobowitz
> CodeSourcery


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Re: Enable Support for Dwarf 1, with Gnu Extension

[Daniel Jacobowitz]

On Tue, Jun 10, 2008 at 01:37:27PM +0000, Salvatore Lionetti wrote:
> Hi,
> 
> Many thanks!
> I've just compiled gdb 6.6, with insight, and see symbol but some time got:
> ptype a
> <incomplete type>
> or gdb seem to have difficult in determine next address (so put breakpoint in wrong place so program many time go running...)

Sorry, I don't know.  These are probably specific problems between GDB
and the debug info generated by Diab.


-- 
Daniel Jacobowitz
CodeSourcery

Re: Enable Support for Dwarf 1, with Gnu Extension

[Michael Snyder]

On Tue, 2008-06-10 at 13:37 +0000, Salvatore Lionetti wrote:
> Hi,
> 
> Many thanks!
> I've just compiled gdb 6.6, with insight, and see symbol but some time got:
> ptype a
> <incomplete type>
> or gdb seem to have difficult in determine next address (so put breakpoint in wrong place so program many time go running...)
> 
> Have you ever heard about a fix on this?
> Some link to have info?

Only guessing, but you might try "gdb --readnow" to force all 
the debugging info to be scanned at the start.  Might at least
resolve the incomplete types.


> (ok: is much simpler work with dwarf2, but seem we have pb with C++ binding of newer version of diab)

That's unfortunate, since dwarf1 is quite old and unsupported.

Re: Enable Support for Dwarf 1, with Gnu Extension

[Salvatore Lionetti]

Hi,

Many thanks for your attention,
it's not unfortune, is only the blind of working in non pure open source env.
However tryed '--readnow' but same pb (<incomplete type>).

Have a good day
--- Mar 10/6/08, Michael Snyder <msnyder@specifix.com> ha scritto:

> Da: Michael Snyder <msnyder@specifix.com>
> Oggetto: Re: Enable Support for Dwarf 1, with Gnu Extension
> A: salvatorelionetti@yahoo.it
> Cc: "Daniel Jacobowitz" <drow@false.org>, gdb@sourceware.org
> Data: Martedì 10 giugno 2008, 19:59
> On Tue, 2008-06-10 at 13:37 +0000, Salvatore Lionetti wrote:
> > Hi,
> > 
> > Many thanks!
> > I've just compiled gdb 6.6, with insight, and see
> symbol but some time got:
> > ptype a
> > <incomplete type>
> > or gdb seem to have difficult in determine next
> address (so put breakpoint in wrong place so program many
> time go running...)
> > 
> > Have you ever heard about a fix on this?
> > Some link to have info?
> 
> Only guessing, but you might try "gdb --readnow"
> to force all 
> the debugging info to be scanned at the start.  Might at
> least
> resolve the incomplete types.
> 
> 
> > (ok: is much simpler work with dwarf2, but seem we
> have pb with C++ binding of newer version of diab)
> 
> That's unfortunate, since dwarf1 is quite old and
> unsupported.


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