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Re: assembly debug question

To: Mike Connors <>
Subject: Re: assembly debug question
From: Daniel Jacobowitz <>
Date: Mon, 21 Apr 2003 09:19:19 -0400
In-reply-to: <001d01c306d2$a55fbe80$7c70a8c0@NOMAD>
Original-recipient: rfc822;
References: <001d01c306d2$a55fbe80$7c70a8c0@NOMAD>
User-agent: Mutt/1.5.1i
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 

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

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