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From:	Charles Sandmann <sandmann AT clio DOT rice DOT edu>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: Easy question about pseudo registers
Date:	Tue, 05 Mar 2002 12:38:21 CST
Organization:	Rice University, Houston TX
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Since the exception happens in real mode, the IP is stored on the real
mode stack.  In addition, there should be an error code there too.  Since
the standard iret won't clear the error code, I'm suprised if the box 
doesn't hang when extra stuff is left on the real mode stack.  To
change the IP to skip the instruction you would need to modify the
IP on the real mode stack - plus clean up the flags and error code.

You may be able to do this messing with the callback regs - or you may
have to write your own wrapper.

The instruction length causing the error is not always going to be 4
bytes - so you would need to disassemble the instruction to know how
far to jump.

Not such an easy question - or answer.

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