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Access to .dynamic section of executable from shared library
- From: Konstantin Baydarov <kbaidarov at ru dot mvista dot com>
- To: gcc at gcc dot gnu dot org
- Date: Wed, 13 Jun 2007 02:47:47 +0400
- Subject: Access to .dynamic section of executable from shared library
Hi All.
I'm trying to get access to .dynamic section of executable in from my
shared library. I'm using _DYNAMIC pointer. But, according to objdump
output, it points to .dynamic section of library instead of executable.
I've made investigations an found out that every object file(executable
of shared library) have a _DYNAMIC symbol and it's local. And when we
using _DYNAMIC we using this local symbol. So when I'm using _DYNAMIC in
shared library - I get pointer to .dynamic section of library, when I'm
using _DYNAMIC in executable - I get pointer to .dynamic section of
executable.
Is there any way to get pointer to executable _DYNAMIC from shared
library context. Maybe when I'm building shared library I should tell
dynamic linker to replace local _DYNAMIC with _DYNAMIC from executable.
I've tried to assign "weak" attribute to definition of _DYNAMIC in
library code - didn't help.
And also I didn't have this problem with gcc 3.4.3.
Any Ideas?
Thanks!