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Date: Fri, 27 Nov 2009 02:18:00 -0000
Message-ID: <4df04b840911261818q50f3da9bs3213c1a2982278f4@mail.gmail.com>
Subject: Re: No .got section in ELF
From: yunfeng zhang <zyf.zeroos@gmail.com>
To: Alexandre Oliva <aoliva@redhat.com>
Cc: Richard Henderson <rth@redhat.com>, gcc@gcc.gnu.org, Andrew Haley <aph@redhat.com>
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The rsult is also same, you go too far.

Code I want to show a fact in Linux, when a process load a library into mem=
ory,
such as 0x1000

---- foo.so 0x1000
ELF header
.text section
.data section
.bss section
...

Here data in 0x1000 and its follower have an *exact* map to foo.so in disk,=
 you
need review my code, so which can bring an optimization is offsetof(C - A) =
is
const. Further, everything in data/bss section has a fixed offset to text
section.


2009/11/26 Alexandre Oliva <aoliva@redhat.com>:
> On Nov 26, 2009, yunfeng zhang <zyf.zeroos@gmail.com> wrote:
>
>> The result is the same
>
> But the code isn't. =A0See how, with hidden, we use the fixed offset.
>
> Now remove the hidden attribute, define g also in the main program, and
> see what it prints.
>
> --
> Alexandre Oliva, freedom fighter =A0 =A0http://FSFLA.org/~lxoliva/
> You must be the change you wish to see in the world. -- Gandhi
> Be Free! -- http://FSFLA.org/ =A0 FSF Latin America board member
> Free Software Evangelist =A0 =A0 =A0Red Hat Brazil Compiler Engineer
>