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Re: More info about libc/libio/gcc-3.0 static binaries
From: |
Marcus Brinkmann |
Subject: |
Re: More info about libc/libio/gcc-3.0 static binaries |
Date: |
Tue, 8 Jan 2002 01:14:46 +0100 |
User-agent: |
Mutt/1.3.24i |
On Tue, Jan 08, 2002 at 01:02:26AM +0100, Marcus Brinkmann wrote:
> BTW, the corresponding glibc-2.2.4/gcc2.95 code for the above code (function
> in function) is
>
> _hurd_stack_setup:
> pushl %ebp
> movl %esp,%ebp
> subl $24,%esp
> leal 8(%ebp),%eax
> movl %eax,-4(%ebp)
> call __mach_init
> leave
> ret
>
> Mmmh. It does the same derefernce 8(%ebp). Maybe the code is right and the
> problem is even before that?
Jeff just enlightened me on lea, which loads the address to the register,
not the content (if I understood everything correctly), for *later*
dereference.
So the question is if gcc-3.0 produces bad code or just code that is
uncomfortable for us. I have not read on in the assembler how %eax is going
to be used later.
Thanks,
Marcus
--
`Rhubarb is no Egyptian god.' Debian http://www.debian.org brinkmd@debian.org
Marcus Brinkmann GNU http://www.gnu.org marcus@gnu.org
Marcus.Brinkmann@ruhr-uni-bochum.de
http://www.marcus-brinkmann.de