* [Qemu-devel] Jump to TSS question
@ 2004-03-24 1:10 Fabrice Bellard
2004-03-26 5:39 ` kazu
0 siblings, 1 reply; 2+ messages in thread
From: Fabrice Bellard @ 2004-03-24 1:10 UTC (permalink / raw)
To: qemu-devel
Hi,
With the latest TSS fixes, SkyOS should begin to work in QEMU.
I have a question for x86 experts: when switching to a task with the
'JMP' instruction, which value of EIP is saved in the old task ? Is it
the value pointing to the JMP instruction or the value pointing to the
instruction after ?
Fabrice.
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [Qemu-devel] Jump to TSS question
2004-03-24 1:10 [Qemu-devel] Jump to TSS question Fabrice Bellard
@ 2004-03-26 5:39 ` kazu
0 siblings, 0 replies; 2+ messages in thread
From: kazu @ 2004-03-26 5:39 UTC (permalink / raw)
To: qemu-devel
Hello,
Wednesday, March 24, 2004 10:10 AM, Fabrice Bellard wrote:
> I have a question for x86 experts: when switching to a task with the
> 'JMP' instruction, which value of EIP is saved in the old task ? Is it
> the value pointing to the JMP instruction or the value pointing to the
> instruction after ?
I'm not a x86 expert but an information is here.
http://www7.informatik.uni-erlangen.de/~msdoerfe/embedded/386html/s07_05.htm
It says, "The EIP field of the TSS points to the instruction after the
one that caused the task switch."
Sincerely,
kazu
^ permalink raw reply [flat|nested] 2+ messages in thread
end of thread, other threads:[~2004-03-26 5:38 UTC | newest]
Thread overview: 2+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2004-03-24 1:10 [Qemu-devel] Jump to TSS question Fabrice Bellard
2004-03-26 5:39 ` kazu
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).