Subject: Re: major revision of kernel 'evcnt' interfaces.
To: email@example.com, Anders Magnusson <firstname.lastname@example.org>
From: Matt Thomas <email@example.com>
Date: 06/03/2000 15:35:23
At 03:13 PM 6/3/2000 -0700, Jason R Thorpe wrote:
>On Sun, Jun 04, 2000 at 12:02:23AM +0200, Anders Magnusson wrote:
> > > Sounds like it's time to add a new pattern to vax.md!! :-)
> > >
> > Eh, new pattern? There are no 64-bit add/sub insn's on vax.
> > (but there are move, shift and other...)
> > Microcode hacking maybe? :-)
> From a discussion w/ Matt Thomas, sounds like 64-bit add can be
>done with two instructions (tho, I don't have the ICB backlock
>anymore). If GCC isn't emitting those two insns to do a 64-bit
>add, well, add a new pattern :-)
adwc $0, dst+4
Gcc can emit the adwc but it isn't the best at it. But instead I've
incorporated support for counting interrupts in the cnm_idispatch in
subr.s. I'll add assembler for doing hardclock as well.
Matt Thomas Internet: firstname.lastname@example.org
3am Software Foundry WWW URL: http://www.3am-software.com/bio/matt/
Cupertino, CA Disclaimer: I avow all knowledge of this message