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Posting-Version: version B 2.10.1 6/24/83; site watcgl.UUCP
Path: utzoo!watmath!watcgl!dmmartindale
From: dmmartindale@watcgl.UUCP (Dave Martindale)
Newsgroups: net.bugs.4bsd
Subject: Re: bad procedure entry masks in bcmp, bcopy, bzero
Message-ID: <969@watcgl.UUCP>
Date: Tue, 18-Oct-83 12:27:42 EDT
Article-I.D.: watcgl.969
Posted: Tue Oct 18 12:27:42 1983
Date-Received: Thu, 20-Oct-83 00:17:39 EDT
References: <601@mit-eddie.UUCP>
Organization: U of Waterloo, Ontario
Lines: 6

Bcmp, bcopy, bzero, and any other C library routines conform to C calling
conventions even though they are written in assembler.  Registers r0-r5
are never saved because they are always scratch registers in C code;
this saves time on routine call and return.  If you write in assembler
and call C routines and expect r0-r5 to be preserved, you have to do it
yourself.  This IS a feature, not a bug.