[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: RE : grub-emu state of the art
From: |
Marco Gerards |
Subject: |
Re: RE : grub-emu state of the art |
Date: |
Fri, 05 May 2006 20:11:27 +0200 |
User-agent: |
Gnus/5.1007 (Gnus v5.10.7) Emacs/21.4 (gnu/linux) |
Tomáš Ebenlendr <address@hidden> writes:
>>> Little changes in source code, though I had to adapt asm files to
>>> passing parameters in stack (I compile without -mregparm=3 -mrtd options
>>> as I didn't want to recompile the whole C library with those passing
>>> parameters conventions).
>>
>> It would be nice to get this to work for the regular modules too. In
>> that case we do not need two set of modules. Besides that, it should
>> also work on the PPC, for example. Which is a lot harder.
>
> I tried that a year ago and I failed: There are lots of hooks, and you
> don't know if passed pointer is pointer to function from module
> (with -mregparm) or from main binary (w/o -mregparm).
>
> The only solution that comes to my mind now is to have all function
> declaration with -mregparm gcc directives. Then all grub functions
> will be with -mregparm and all standard library functions without.
> Other option will be recompiling standard libraries or creating some
> wrappers for them. But again, we must be careful when manipulating
> pointers to functions...
Right, which is already being done for the modules. I agree it will
be hard to make this work in the right way. It's more important to
get modules loading working first, without disturbing anything else.
> I was also thinking about throwing the -mregparm stuff away, but other
> developers here want it.
Right.
--
Marco