Re: .eh_frame

[Masao Uebayashi <uebayasi%gmail.com@localhost>]

On Mon, Nov 10, 2014 at 2:12 AM, Joerg Sonnenberger
<joerg%britannica.bec.de@localhost> wrote:
> On Mon, Nov 10, 2014 at 01:40:59AM +0900, Masao Uebayashi wrote:
>> On Mon, Nov 10, 2014 at 1:24 AM, Joerg Sonnenberger
>> <joerg%britannica.bec.de@localhost> wrote:
>> > On Sun, Nov 09, 2014 at 09:26:45PM +0900, Masao Uebayashi wrote:
>> >> o .eh_frame is GNU extension debug info to unwind stack [1]
>> >
>> > No.
>>
>> Ian Lance Taylor said that it is similar to DWARF .debug_frame, but different.
>
> Yes, but it is not a GNU extension.
>
>> >> o .eh_frame in kernel is not used yet, and safely removed from /netbsd
>> >
>> > Please do not.
>>
>> o Is it correct that .eh_frame is not used by anything at all at the moment?
>
> gdb should in principle, haven't tried. libunwind is not hooked into ddb
> (yet).

Good to see these are clarified, finally.

>> o Can users safely trim .eh_frame from her/his kernel?
>
> Yes, but it should not be the default behavior...

If users find 500K is wasted and complain that, what is your answer?