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Re: Does gdb 5.2 support gcc 3.1.1 on Linux/mips?
- From: Daniel Jacobowitz <drow at mvista dot com>
- To: "H . J . Lu" <hjl at lucon dot org>
- Cc: GDB <gdb at sources dot redhat dot com>, gcc at gcc dot gnu dot org,binutils at sources dot redhat dot com
- Date: Mon, 3 Jun 2002 10:18:10 -0400
- Subject: Re: Does gdb 5.2 support gcc 3.1.1 on Linux/mips?
- References: <20020602143627.A10506@lucon.org> <20020603010003.GA16363@branoic.them.org> <20020602194326.A14976@lucon.org> <20020603050101.GA18906@branoic.them.org> <20020602220534.B17122@lucon.org> <20020603050906.GA19164@branoic.them.org> <20020602224240.A17723@lucon.org> <20020602230331.A18107@lucon.org> <20020602231016.A18236@lucon.org>
On Sun, Jun 02, 2002 at 11:10:16PM -0700, H . J . Lu wrote:
> On Sun, Jun 02, 2002 at 11:03:31PM -0700, H . J . Lu wrote:
> >
> > DW_CFA_17 is DW_CFA_offset_extended_sf, which was added to gcc on
> > 2002-01-30. I have verifed that gcc 3.1.1 does generate it for mips.
> > It looks like we have at least 2 bugs. First, readelf doesn't handle
> > DW_CFA_offset_extended_sf and maybe other DAWRF debug info generated
> > by gcc 3.1.1. Secondly, gdb 5.2 doesn't work with gcc 3.1.1 for
> > Linux/mips.
>
> dwarf2cfi.c in gdb 5.2 seems to support DW_CFA_offset_extended_sf. But
> that file is not used anywhere, at least not for Linux/x86 nor
> Linux/mips. Did I miss something? Shouldn't we fix gdb 5.2 and
> binutils for gcc 3.1.1?
GDB doesn't need the CFA info on MIPS (although I'll try soon to let
GDB use it). Is that really what's making GDB choke? Have you looked
at Jakub's suggestion about gas and -gdwarf-2?
--
Daniel Jacobowitz Carnegie Mellon University
MontaVista Software Debian GNU/Linux Developer