On Thu, Jul 05, 2018 at 12:12:45AM -0600, Theo de Raadt wrote: > Peter J. Philipp <p...@centroid.eu> wrote: > > > Hi, > > > > This week I bought a used G5 PowerMac7,3 with 4 GB RAM and dual > > PowerPC 970FX cpu's.?? I didn't buy it because I miss the macppc all > > that much but because I want to test the water of creating a 64 bit > > port that goes onward to perhaps support IBM POWER5+ CPU's.?? It seems > > Linux and FreeBSD are already there or on their way. > > > > Since I'm a fan of OpenBSD I want an OpenBSD 64 bit Power(PC) port, > > and asking if anyone has experience to make this happen? What are > > hints that you can give??? Is it possible to just port over FreeBSD's > > low kernel routines and get OpenBSD/powerpc64 working that way? > > > > My use of OpenBSD/powerpc goes back to 2.9/3.0 days (when the macppc > > port came), I had some time then and created some manpages for Dale > > Rahn for the macppc system (which are probably in the attic by now).?? > > I love working with kernel code but I largely don't know what I'm > > doing.?? My programming experience is limited, I program a DNS > > authoritative server. > > > > At my last job I was an AIX sysadmin (in training) and worked on a > > POWER 7 machine running AIX 7.2.?? I left that job though so I can't > > use that hardware to test a 64 bit port.?? It left an impression on me > > though. > > 60% of the work is in pmap.c, 20% of the work in trap.c, and 20% > of the work is elsewhere.
Well I got started. Since I've never done a port to any architecture, I did not know where to begin. I felt the header files needed work first especially _types.h. This is taking a long time and it's in the "20% of the work is elsewhere" category. I did about 6 header files this morning, this morning was rare that I had time, I don't always have this much time. In order to not duplicate work of other people attempting a port I put my files in my cvsweb on my vps. We can share if you're working on this too. And if I give up then the work is not in vain. The URL to this repo is: http://centroid.eu/cgi-bin/cvsweb/powerpc64/ The reason I decided to reuse the header files from the powerpc arch is that this is what FreeBSD is doing... this way I don't have to convert FreeBSD's stuff to OpenBSD semantics, I just change it all to 64 bit and hope it'll work. I did my best converting the ASM in atomic.h to 64 bit instructions with help of an IBM programmers guide and the FreeBSD repo for hints. I'll keep going when I find more time :-). Crontab to sync this repo to my vps's repo is set at hourly. Regards, -peter
