forums.ps2dev.org

[Chewi]

Well spotted. mipsel is just generic Little Endian MIPS. Oh well. :(

[ragnarok2040]

Since it was the easiest starting point. I ported the binutils-2.16.1 patch that adds the IOP's irx elf format to binutils-2.19. It's at http://homebrew.thewaffleiron.net/ragnarok2040. I was able to compile and install it fine. I haven't tested it yet with gcc. I added the gcc-4.3 configure target changes to gcc-4.3.2 to build for a mips*-*-*irx target but for some reason the configure script can't seem to parse the mips-irx target I passed to it.

The only thing I didn't add to the patch was the commenting of BFD_ASSERT (r_symndx != 0); at line 9427 in bfd/elflink.c. While r_symndx was 0 in irx modules produced by previous binutils revisions, there's new code that fills r_symndx with a value from htab->data_index_section->target_index at line 9423 if osec->target_index is 0. Not sure what the effect would be on generated irx modules.

I've been playing around with the new version of binutils, and I needed to add the -mdebug flag for binutils-2.19's as.exe in order to create an object file with the same .mdebug section as iop-as. Without it HAS_RELOC is defined and the section is changed to .pdr. I'm not sure it matters much, as the section probably gets stripped.

[yoshi314]

that seems like a good start.

did you consider using some kind of a central repository for those patches to make things easier for everyone? (google code would be nice).

[ragnarok2040]

I'd considered it before but the disk quota for subversion repositories was only 100 MB, but it seems they've increased it to 1 GB around the 13th. I'm not sure if new projects get 1 GB though. gcc-4.3.2 takes up about 353 MB and binutils takes up 109 MB so that's almost half a gig for the iop and ee toolchains each. If I split them up into seperate mipsel-r5900-elf, mips-r3000-irx, dvp-elf (dvp-mips-elf?) projects, there should be enough space to host them all. I'll go create the projects in the next couple of days and ask google for an increase if there's not enough space.

[yoshi314]

i was interested in such solution, because nowadays it seems that everybody is working on toolchain patches separately from each other.

maybe some kind of solution that would make team effort easier might work out better.

alternatively all this might be hosted on ps2dev svn, but i think google's hosting is generally much faster.

[ragnarok2040]

The first project page is up at http://ps2iop.googlecode.com/. I'm having trouble getting the svn repositories to sync though, google's server sent me a 502 Bad Gateway error in middle of the transfer and not only that, the upload speed is pretty slow at ~3 to 5 KB/s though sometimes I get a burst to 30-50 KB/s. Right now the repository only has the vanilla versions of binutils-2.19 and gcc-4.3.2. Then I'll check out a local copy and apply the binutils patch then commit those changes.

[Chewi]

I've just moved house and am on a very slow connection for the moment. I'll be running a server from next month and so I could host if necessary. I very highly recommend Git over Subversion though. I know Git can seem scary at first but I used Subversion for years and haven't looked back since I switched. It's especially appropriate for a project like this.

ragnarok2040, did you see my IOP patch for GCC? It's only small but it is important. Actually, ooPo posted an older version on the first page of this thread. Here's my latest version.

[ragnarok2040]

I've never actually used Git, heh :D. It doesn't look too scary, to me, at least. The cheatsheet helps a bit. Looks easier to understand than subversion anyway, heh. I think I have your latest patches. The original iop patch has the same timestamps as the one you've posted. The r5900 patch has timestamps from February 18th. I can't remember how I got them :?, though I downloaded them recently. I think it was probably when your server was back up for a time.

This is my current patch for gcc-4.3.2, but I've just modified config.sub to add a -irx os target under the -gnu system target.

[yoshi314]

[Chewi]

I never patched config.sub because Gentoo automatically replaces it with the latest version when building.

[ragnarok2040]

Ahh, :D. I think I've got it sorted out :?.

[Chewi]

We need to agree on the machine names or we're going to get in a mess. Just mips is okay for the IOP since it is a very generic MIPS. mips64r5900el is the official name for the R5900 according to the latest config.sub. It is important to follow this file because other packages include config.sub from here.

The company name is generally less important but the most official one I've seen is scei, despite the fact that config.sub doesn't mention it. I would prefer this over sony.

[ragnarok2040]

I just used sony because that's what it seems the gcc developers were using. I agree it should be scei. Thanks for the link to the latest config.sub. I remembered you said that they'd changed the name from vr5900 to r5900 but it was still vr5900 in 4.3.2

I gave up on googlecode. It keeps giving me that 502 Bad Gateway error and then I have to restart the sync which causes it to upload from the beginning. Maybe gitorious will work, but I can't seem to find what their hosting limits are. I've seen a couple of projects based on gcc there, so it might work. I'll play around with git to get some experience with it in the meantime.

Edit:
Sourceforge approved my request for a project page. The url is http://sourceforge.net/projects/ps2toolchain. I've uploaded a bare-bones repository for the toolchains but they only currently have the vanilla versions of gcc-4.3.2 and binutils-2.19 per each toolchain. I'll commit the changes for the iop toolchain when I get a working copy checked out.

Edit2:
I've just committed both binutils and gcc patches for the iop toolchain in one big commit. I've built the toolchain and tested it trying to build ps2sdk, but mips-irx-ld is segfaulting when linking.

[cyt0plas]

[ragnarok2040]

That's quite a nice offer, :D. I've already managed to get hosting at SourceForge, though. With my attention divided by so many projects, I wouldn't be able to actively maintain a server, heh. I'm hoping to push some stuff out in the next couple months so I'll have more free time to work on the toolchain.

Perhaps Chewi could take you up on the offer as he did the initial patches for gcc-4.3.2 and binutils-2.16.1 and was working on patches to get newer versions of Linux to boot on the PS2 as well.

[cyt0plas]

[sonyman]

I know this thread is old, but I wanted to know if any progress had been made or if there still is any interest in updating the toolchain and system libraries. I've had the Linux kit since launch and have messed around with it on and off since, but my interest is peaked again since I am now delving into the basics of programming in C.

[Chewi]

I was on and off about continuing it, now I'm pretty much off, unless as I've said before, some who REALLY knows this stuff steps up to help. I don't see that happening.