From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: To: 9fans@cse.psu.edu Subject: Re: [9fans] Ultrasparc II From: Charles Forsyth MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit Date: Wed, 18 Sep 2002 20:10:19 +0100 Topicbox-Message-UUID: eeb7200c-eaca-11e9-9e20-41e7f4b1d025 >>Otherwise the new instructions could be accessed by using WORD >>macros in assembler, and not changing the ka and kl at all. i often did that with the powerpc because the system interface changed somewhat between devices and there were plenty of instructions in q[acl] as it stood, thanks to the architecture. since only a few files in the kernel (eg, l.s) needed to access the system instructions and control registers directly it was easier to define a few special things there.