From:	"Anthony.Appleyard" <MCLSSAA2 AT fs2 DOT mt DOT umist DOT ac DOT uk>
Organization:	Materials Science Centre
To:	djgpp-workers AT delorie DOT com
Date:	Tue, 20 Jan 1998 15:24:41 GMT
Subject:	Re: MCLSSAA2 : hooking interrupt 9
Reply-to:	Anthony DOT Appleyard AT umist DOT ac DOT uk
Message-ID:	<7B1E493424@fs2.mt.umist.ac.uk>

> Anything which passes arguments on the stack, or uses automatic arrays
> will potentially not work.  GCC assumes that SS = DS, so that you can 
> reference addresses interchangably with [EBX] or [EBP].  Simple functions
> don't trip over this, complicated ones will.

  Then should I insert the two instructions

    mov %ss,%ax
    mov %ax,%ds

 next before this instruction?
    call   *%ebx			/* call the user function */

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