[fpc-devel] Re: [MacPascal] FPC with XCode
florian at freepascal.org
Thu Jun 16 17:30:44 CEST 2005
Jonas Maebe wrote:
> On 16 jun 2005, at 17:12, Florian Klaempfl wrote:
>>> The best way to solve this would be to compile the Free Pascal RTL
>>> as a
>>> shared library with an init routine that takes care of this. I still
>>> have to add support for doing this to the Mac OS X port though. I've
>>> recently found a way to do this which does not require PIC support, so
>>> it should be fairly easy to add now.
>> Creating PIC isn't the hard part anymore.
> I already have a non-working patch to add PIC for PPC, but the current
> PIC support we have is very incomplete. For example, PIC access must be
> enabled for all constants which are put in the data section (like fpu
> and string constants). Currently, those are still directly accessed, so
> we only generate partial PIC code (which is worse than no PIC code,
> because you get the slowdown in the places where PIC is used without
> the ability to actually share code between different programs).
Look how e.g. sparc it does. It is moved to cgcpu.fixreg/make_simple_ref and
cgcpu.loadaddr: if a symbol with type addr_full is passed, it simply "picifies" it.
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