Relocatable EXEs (was [ros-kernel] ReactOS 0.3.0 Release Plans)
xnavara at volny.cz
Sat Sep 18 14:54:43 CEST 2004
Filip Navara wrote:
> Barubary wrote:
>>>> - *Relocatable EXEs*
>>> Damn, where did you get this? To my best knowledge binutils support
>>> relocatable executables.
>> I never found a way, and neither did the ReactOS team. binutils
>> seems to assume that EXEs are never relocatable, while DLLs always
>> are. Both statements are false, though a non-relocatable DLL isn't
>> very useful.
> I'm not going to say that there aren't problems with it, but BinUtils
> are able to generate relocatable executables and there are at least
> two methods to do that:
> 1) Passing "-pie" and "--image-base" base options to "ld" and then
> manually (or using some tool) remove the DLL flag from the PE header.
> Actually it's a bug that the DLL flag is ever placed in the PE header,
> but it's pretty easy to workaround it. Also for the NTOSKRNL case in
> ReactOS we really don't care if there is the DLL flag as the
> FreeLoader doesn't check it (only the user mode loader does that...
> (I'm not sure if this is actually implemented in ReactOS)).
> 2) Using a linker script.
> I have never tried to use the second method, but I was told it's
> possible. For the first method I can supply the tool if needed.
Even better...Attached is a patch against BinUtils 15/08/04 that fixed
the "-pie" support for PE exectuables. If someone wants to forward it to
the BinUtils people feel free to do so and leave me a note.
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