assembly debug question

assembly debug question

[Mike Connors]

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 

Thanks in advance, 
Mike 

--- 
Mike Connors			Green Hills Software, San Clemente 
Field Applications Engineer	131 Avenida Victoria 
mailto:mike.connors@ghs.com	San Clemente, CA  92672 
phone: 1-949-369-3950		
cell:  1-949-412-3951		fax: 1-949-369-3959 

assembly debug question

[Mike Connors]

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 

Thanks in advance, 
Mike 

--- 
Mike Connors			Green Hills Software, San Clemente 
Field Applications Engineer	131 Avenida Victoria 
mailto:mike.connors@ghs.com	San Clemente, CA  92672 
phone: 1-949-369-3950		
cell:  1-949-412-3951		fax: 1-949-369-3959 

Re: assembly debug question

[Daniel Jacobowitz]

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