From owner-freebsd-current  Tue Mar 16 20:15: 8 1999
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Date: Tue, 16 Mar 1999 23:13:46 -0500 (EST)
From: Luoqi Chen <luoqi@watermarkgroup.com>
Message-Id: <199903170413.XAA14900@lor.watermarkgroup.com>
To: current@freebsd.org
Subject: VM86 assembly code problem
Sender: owner-freebsd-current@FreeBSD.ORG
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X-Loop: FreeBSD.ORG

There're a couple of places in swtch.s where code looks like this,

#ifdef VM86
        btrl    %esi, _private_tss
        je      3f
	...
3:
#endif

The conditional jump statement doesn't seem right, according to manual,
btrl instruction modifies CF flag but not Z, so the jump should be jae/jb
instead of je/jne. Could anyone confirm this?

-lq


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