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From: m5@bobkat.UUCP
Newsgroups: comp.sys.intel
Subject: strcpy() on a 386
Message-ID: <2804@bobkat.UUCP>
Date: Fri, 18-Sep-87 18:03:58 EDT
Article-I.D.: bobkat.2804
Posted: Fri Sep 18 18:03:58 1987
Date-Received: Sun, 20-Sep-87 14:17:55 EDT
Reply-To: m5@bobkat.UUCP (Mike McNally (Man from Mars))
Distribution: na
Organization: Digital Lynx, Inc; Dallas, TX
Lines: 20

How do clever iAPX 386 users (or iAPX *8[68] users for that matter) 
implement C-style string copies?  Seems to me that there are two
approaches:

    ; Set up ES, DS, EI, DI, CX, and the direction flag
loop:
        lodsb
        stosb
        cmp     AL, 0
        loopne  loop        ; or maybe it's loope

The other approach would be to SCASB to the end of the source string,
then move that many bytes with REP MOVSB.  Neither way is particularly
appealing.  So like, how do the pros do it?  What's the deal?

-- 
Mike McNally, mercifully employed at Digital Lynx ---
    Where Plano Road the Mighty Flood of Forest Lane doth meet,
    And Garland fair, whose perfumed air flows soft about my feet...
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