: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
btrl only effects the Carry. The VM86 code looks wrong to me, though there is an outside chance that it is doing a conditional jump based on something that occured prior to the btrl. -Matt Matthew Dillon <dil...@backplane.com> To Unsubscribe: send mail to majord...@freebsd.org with "unsubscribe freebsd-current" in the body of the message