Date: Tue, 31 May 2005 17:06:21 +0200 (CEST) From: Michael Reifenberger <mike@Reifenberger.com> To: freebsd-amd64@freebsd.org Subject: Re: 64bit loader Message-ID: <20050531165558.L88820@fw.reifenberger.com> In-Reply-To: <20050531143254.GC9158@dragon.NUXI.org> References: <20050531133608.J87922@fw.reifenberger.com> <20050531143254.GC9158@dragon.NUXI.org>
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On Tue, 31 May 2005, David O'Brien wrote:
...
>> mode (compiling -m32...)
>> This breaks the building of testmain in sys/boot/ficl at least
>> as -m32 doesnt seem to be well supported until now on amd64.
>
> Are you sure (cd /sys/boot/ficl ; make testmain) works on 32-bit systems?
> It fails on my 6-CURRENT system (though for a different reason).
>
No.
As it seems boot/ficl contains code which relys on i386/loader stuff.
Its not self contained as it should be.
>> Wouldn't is be possible to switch to 64bit long mode in the
>> boot0 loader
>
> Ha!! We can only have 1 sector worth of code in boot0. At this point we
> only have a few bytes of free code space. No where near enough to do the
> long mode switch.
>
Sorry. I didnt meant boot0 but btx. I do know that boot0 is too small.
But btx is already switching to protected mode so it should be possible
to switch to 64bit mode too.
>> (I'm trying to use and upgrade our ficl loader BTW)
>
> One is able to use and upgrade one's ficl loader loader on AMD64 just
> fine. So what is the real problem you are hitting?
>
I'm trying to upgrade ficl3 to ficl4 (mainly due to being able to
use compressed softwords).
Bye/2
---
Michael Reifenberger, Business Development Manager SAP-Basis, Plaut Consulting
Comp: Michael.Reifenberger@plaut.de | Priv: Michael@Reifenberger.com
http://www.plaut.de | http://www.Reifenberger.com
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