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[Xen-devel] about returning path of exception handler


  • To: xen-devel@xxxxxxxxxxxxxxxxxxx
  • From: yushang <yusunn@xxxxxxxxx>
  • Date: Tue, 18 Mar 2008 12:35:32 +0800
  • Delivery-date: Mon, 17 Mar 2008 21:35:56 -0700
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  • List-id: Xen developer discussion <xen-devel.lists.xensource.com>

Hi All,
After calling create_bounce_frame , how does the execution return to
the next instruction ? I mean the following line:
movb  $0,TRAPBOUNCE_flags(%edx)
I my understanding , the returning path is : create_bounce_frame ->
guest os exception handler -> interrupted place
It seems that execution will not return to the above line . Maybe I
have missed something , can someone point it out for me ? All my
discussions assume x86_32.

BR
yushang

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