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Date: Mon, 21 Apr 2003 09:19:19 -0400
From: Daniel Jacobowitz <dan@debian.org>
To: Mike Connors <mike.connors@ghs.com>
Cc: linux-mips@linux-mips.org
Subject: Re: assembly debug question
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On Sat, Apr 19, 2003 at 05:20:27PM -0700, Mike Connors wrote:
> Hi All, 
> 
> I'm using gcc v2.96 to compile a MIPS targeted Linux kernel 
> and am finding it difficult to produce debug information 
> for assembly files. 
> 
> I've discovered that a typical compile line for assembly 
> in the kernel gets its parameters from AFLAGS and results 
> in the following commandline: 
> 
> mipsel-linux-gcc -D__ASSEMBLY__ -D__KERNEL__ -I/l/include \
> 	-G 0 -mno-abicalls -fno-pic -mcpu=r4600 -mips2 \
> 	-Wa,--trap -pipe -c entry.S -o entry.o 
> 
> According to the documentation, some targets support 
> dwarf debug information using --gdwarf2.  Does anyone 
> know if the MIPS target is supported in version? 
> 
> Also, --gstabs doesn't seem to work either.  Nor does 
> -gdwarf-2, -gdwarf -g2, -gstabs+, -gdwarf+, etc. 
> 
> Has anyone had luck producing debug information for 
> assembly files with this version of gcc? 
> 
> ./mipsel-linux-gcc --version 
> 2.96 
> ./mipsel-linux-as --version 
> GNU assembler 2.11.92.0.10 

I think --gstabs is later than that version of binutils.  Also, I
didn't fix DWARF-2 for MIPS until well after those tools versions,
so I believe you won't be able to use that at all.

-- 
Daniel Jacobowitz
MontaVista Software                         Debian GNU/Linux Developer