Date: Tue, 16 Mar 1999 23:13:46 -0500 (EST) From: Luoqi Chen <luoqi@watermarkgroup.com> To: current@freebsd.org Subject: VM86 assembly code problem Message-ID: <199903170413.XAA14900@lor.watermarkgroup.com>
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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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