[RFA] coffread.c: support dwarf2 info

[RFA] coffread.c: support dwarf2 info

[Mark E.]

Hello folks,
A few months ago I successfully added coff support for dwarf2 info to 
binutils so djgpp debuggers could use it. And the new version of gcc has been 
configured to generate dwarf2 info. GDB just needs a small change to (almost) 
complete the chain.

I've altered coffread.c to read in dwarf2 info just like in elfread.c. Please 
consider commiting the following patch:

gdb/Changelog

2001-06-23  Mark Elbrecht  <snowball@bigfoot.com>

	* coffread.c (coff_symfile_read): Parse DWARF2 info if present.

*** coffread.c.orig	Tue May 29 06:45:10 2001
--- coffread.c	Fri Jun 22 17:02:56 2001
*************** coff_symfile_read (struct objfile *objfi
*** 689,694 ****
--- 689,699 ----
  			       info->stabsects,
  			       info->stabstrsect->filepos, stabstrsize);
      }
+   if (dwarf2_has_info (abfd))
+     {
+       /* DWARF 2 sections */
+       dwarf2_build_psymtabs (objfile, mainline);
+     }
  
    do_cleanups (back_to);
  }

After that, only one obstacle remains. The dwarf2 reader uses 
'bfd_get_sign_extended_vma' from the bfd library. For whatever reason, that 
function only works with the elf format. But that's not a program that you 
folks can fix since it's in the bfd library. After I hacked it to return a 
legit value, I was able to set breakpoints and step through programs 
containing dwarf2 info.

Mark

Re: [RFA] coffread.c: support dwarf2 info

[Eli Zaretskii]

> From: "Mark E." <snowball3@bigfoot.com>
> Date: Sat, 23 Jun 2001 12:07:50 -0400
> 
> A few months ago I successfully added coff support for dwarf2 info to 
> binutils so djgpp debuggers could use it. And the new version of gcc has been 
> configured to generate dwarf2 info. GDB just needs a small change to (almost) 
> complete the chain.
> 
> I've altered coffread.c to read in dwarf2 info just like in
> elfread.c. Please consider commiting the following patch:

Ping!  No one responded to this until now.

According to MAINTAINERS:

   coff reader           Philippe De Muyter      phdm@macqel.be

Philippe, could you please look at this?  Thanks.

Re: [RFA] coffread.c: support dwarf2 info

[Philippe De Muyter]

Eli Zaretskii wrote :
> > From: "Mark E." <snowball3@bigfoot.com>
> > Date: Sat, 23 Jun 2001 12:07:50 -0400
> > 
> > A few months ago I successfully added coff support for dwarf2 info to 
> > binutils so djgpp debuggers could use it. And the new version of gcc has been 
> > configured to generate dwarf2 info. GDB just needs a small change to (almost) 
> > complete the chain.
> > 
> > I've altered coffread.c to read in dwarf2 info just like in
> > elfread.c. Please consider commiting the following patch:
> 
> Ping!  No one responded to this until now.
> 
> According to MAINTAINERS:
> 
>    coff reader           Philippe De Muyter      phdm@macqel.be
> 
> Philippe, could you please look at this?  Thanks.
> 
No problem for me, Mark.  You may install it.

Philippe

Re: [RFA] coffread.c: support dwarf2 info

[Eli Zaretskii]

On Fri, 29 Jun 2001, Philippe De Muyter wrote:

> Eli Zaretskii wrote :
> > > From: "Mark E." <snowball3@bigfoot.com>
> > > Date: Sat, 23 Jun 2001 12:07:50 -0400
> > > 
> > > A few months ago I successfully added coff support for dwarf2 info to 
> > > binutils so djgpp debuggers could use it. And the new version of gcc has been 
> > > configured to generate dwarf2 info. GDB just needs a small change to (almost) 
> > > complete the chain.
> > > 
> > > I've altered coffread.c to read in dwarf2 info just like in
> > > elfread.c. Please consider commiting the following patch:
> > 
> > Ping!  No one responded to this until now.
> > 
> > According to MAINTAINERS:
> > 
> >    coff reader           Philippe De Muyter      phdm@macqel.be
> > 
> > Philippe, could you please look at this?  Thanks.
> > 
> No problem for me, Mark.  You may install it.

Committed.  Thanks!