From mboxrd@z Thu Jan  1 00:00:00 1970
To: 9fans@cse.psu.edu
From: Tad Hunt <tad@entrisphere.com>
Message-ID: <MOBYDICKUuEhjJ8uT6S000000fe@mobydick.int.entrisphere.com>
Subject: [9fans] more libc/power assembly bits
Date: Thu,  3 Jul 2003 18:58:00 -0700
Topicbox-Message-UUID: e7f64012-eacb-11e9-9e20-41e7f4b1d025


Two more assembler goodies: strchr() and strlen().

NetBSD has an even more optimized strlen().  According to the
comment at the top it originated in 'The PowerPC Compiler Writer's
Guide', by Steve Hoxey, Faraydon Karim, Bill Hay and Hank Warren.

(http://cvsweb.netbsd.org/bsdweb.cgi/src/lib/libc/arch/powerpc/string/strlen.S?rev=1.2)

However, it would have been way too much work to convert the powerpc
assembly source into qa(1) source.

In any case, these ones should be faster than the C versions from
the libc/port directory.

-Tad

# text/plain; name="strlen.s" [ strlen.s ] /usr/home/tad/R1.2.0/plan9/src/libc/power/strlen.s
# text/plain; name="strchr.s" [ strchr.s ] /usr/home/tad/R1.2.0/plan9/src/libc/power/strchr.s