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From: mccaugh@uiucdcs.CS.UIUC.EDU
Newsgroups: net.lang.c
Subject: Re: varargs
Message-ID: <27600048@uiucdcs>
Date: Tue, 29-Apr-86 03:08:00 EDT
Article-I.D.: uiucdcs.27600048
Posted: Tue Apr 29 03:08:00 1986
Date-Received: Sat, 3-May-86 00:48:08 EDT
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Nf-From: uiucdcs.CS.UIUC.EDU!mccaugh    Apr 29 02:08:00 1986


It is a truism that MS-DOS prefers that arguments be passed register-wise; in
part this is due to the anticipation that the routine in question to receive

the arguments is an interrupt-routine with interrupts (hopefully) disabled,
so it must proceed about its business most hastily, less a (possibly) more
desrving interrupt get neglected.
   Some architectures -- most notably, the IBM-360/370 -- allowed for "load
multiple" and "store multiple" commands which saved the whole bank of regis-
ters in one instruction.

--Scott McCaughrin