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Date: Fri, 15 Nov 1996 19:50:25 +1100
From: Bruce Evans <bde@zeta.org.au>
Message-Id: <199611150850.TAA05787@godzilla.zeta.org.au>
To: bde@zeta.org.au, jkh@time.cdrom.com
Subject: Re: cvs commit: src/sys/i386/i386 locore.s
Cc: cvs-all@freefall.freebsd.org, CVS-committers@freefall.freebsd.org,
        cvs-sys@freefall.freebsd.org, jkh@freefall.freebsd.org
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>> Erm, the movl looks OK to me, and the lea isn't an i386 instruction so
>> it doesn't compile.
>
>[scratches his head]
>
>Why did this compile for me?  And why did that single fix (suggested

Probably because it wasn't enabled in -current.

>by Don Lewis, BTW, who knows far more about the x86 instruction set
>than I) result in USERCONFIG_BOOT working where it did not before?

Because -stable has a different `lea' instruction than -current (without
the `$').  Previously -stable had a different (broken) movl instruction
than -current (without the `$').

`lea' (without the `$') does work but is not normally used on x86's
because it is larger in some cases and slower in some cases but never
smaller or faster.

Bruce