llvm dev - Feb 2013 - [LLVMdev] llvm-dwarfdump and eh_frame

Hi,

I noticed that llvm-dwarfdump does not show any information about the eh_frame
section. While DWARFContext::getDebugAranges explicitly tries to parse it, it
fails because the DWARFContextInMemory constructor does not check for that
specific section name. A fix would be to check wether the name is
"debug_frame" or "eh_frame". If this is correct, should I
submit a smallish patch, or could somebody else fix it, or can I just commit the
change to svn?

-- Erik.

On Thu, Feb 7, 2013 at 2:50 PM, Erik Verbruggen <erikjv at me.com>
wrote:
> Hi,
>
> I noticed that llvm-dwarfdump does not show any information about the
eh_frame section. While DWARFContext::getDebugAranges explicitly tries to parse
it, it fails because the DWARFContextInMemory constructor does not check for
that specific section name. A fix would be to check wether the name is
"debug_frame" or "eh_frame". If this is correct, should I
submit a smallish patch, or could somebody else fix it, or can I just commit the
change to svn?
>
Please submit a patch to llvm-commits, with a test case that exercises the fix.

Eli

On Feb 11, 2013, at 18:13, Eli Bendersky <eliben at google.com> wrote:
> On Thu, Feb 7, 2013 at 2:50 PM, Erik Verbruggen <erikjv at me.com>
wrote:
>> Hi,
>> 
>> I noticed that llvm-dwarfdump does not show any information about the
eh_frame section. While DWARFContext::getDebugAranges explicitly tries to parse
it, it fails because the DWARFContextInMemory constructor does not check for
that specific section name. A fix would be to check wether the name is
"debug_frame" or "eh_frame". If this is correct, should I
submit a smallish patch, or could somebody else fix it, or can I just commit the
change to svn?
>> 
> 
> Please submit a patch to llvm-commits, with a test case that exercises the
fix.
> 
> Eli
Before I submit the patch, I was wondering if it would be better to add a
-eh-frame option to llvm-dwarfdump, like in the dwarfdump utility. Otherwise the
eh_frame section would be treaded as a debug_frame section. What do you think?

Also, how can I do a partial match on the output of dwarfdump/FileCheck? For
example:
	pc=00527a01...08598611
.. is in the output, but the exact pc addresses do not matter when checking
whether a line is in the output or not.


-- Erik.