• Subject: RE: ds alignment (was Prototyping printf())
  • From: bmorris@xxxxxxxxxx
  • Date: Tue, 10 Oct 2000 09:27:19 -0400
  • Importance: Normal


>Date: Fri, 6 Oct 2000 14:42:24 -0400
>From: Jon.Paris@hal.it
>
>I believe that a DS is always 16 byte aligned, and even if not the use of
>the ALIGN keyword would do the job for you.

John, the ALIGN keyword doesn't force 16-byte alignment.  It just forces
integer and float types to be correctly aligned.  A 4F would cause the
DS to be at least 4-byte aligned; a 20i would cause the DS to be at least
8-byte aligned.

Only the presence of a pointer forces a 16-byte alignment (whether or
not you have ALIGN coded).

Even if a DS is always currently 16-byte aligned (is it?), it's not a
documented feature, and shouldn't be counted on.

Barbara Morris


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