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Re: [Qemu-devel] Re: qemu-ppc can't run static uClibc binaries.
From: |
Rob Landley |
Subject: |
Re: [Qemu-devel] Re: qemu-ppc can't run static uClibc binaries. |
Date: |
Wed, 17 Feb 2010 10:36:32 -0600 |
User-agent: |
KMail/1.11.2 (Linux/2.6.28-17-generic; KDE/4.2.2; x86_64; ; ) |
On Wednesday 17 February 2010 03:24:58 Artyom Tarasenko wrote:
> > I've also got a bunch of "sort of working, but not well enough to run
> > builds natively under" targets on top of that (arm big endian, sh4,
> > sparc...)
>
> What's not well enough on sparc?
More than one thing, unfortunately. (Symptoms I can give you, causes I'm iffy
on.)
1) the uClibc 0.9.32.2 dynamic linker isn't working on 32-bit sparc. (I
believe it's a uClibc issue, not specifically qemu problem. But then since I
don't own real sparc hardware, I dunno.)
2) Not all of the system calls work (again, probably a uClibc issue).
3) I'm not sure my toolchain configuration is quite matching the instruction
set qemu-system-sparc is emulating by default, I get occasional illegal
instruction errors (but not reliably). (Are #1 and #2 related to this?
Dunno.)
If I statically link everything I can at least get to a command prompt, but
only with init=/bin/sh. (If I try to run it through the boot script, it dies
with various errors from "cannot allocate memory" to "Illegal insruction".)
If you're curious you can play around with the prebuilt binary at
http://impactlinux.com/fwl/downloads/binaries/system-image-sparc.tar.bz2 but
you'll have to boot it like this to bypass the boot script:
KERNEL_EXTRA="init=/bin/ash" ./run-emulator.sh
Then to see it misbehave:
# mount -t tmpfs /tmp /tmp
# cd /tmp
/tmp # ls
ls: can't open '.': Cannot allocate memory
/tmp # mount -t proc /proc /proc
/tmp # ls -l /proc
Illegal instruction
The toolchain is configured with "sparc-unknown-linux" which you'd think would
be generic sparc, but apparently not...
If you prefer to build it from source, you can download
http://impactlinux.com/fwl/downloads/firmware-0.9.10.tar.bz2 and run
"./build.sh sparc", then look in the "build" directory when it's done. I'd
happily explain how the build scripts work and what config options they're
passing to the the toolchain and kernel and such, but this isn't the list for
that. (http://impactlinux.com/fwl has a link to the FWL mailing list if
you're interested.)
I'd be thrilled to get some help on it actually, not a sparc expert...
Thanks,
Rob
--
Latency is more important than throughput. It's that simple. - Linus Torvalds
- [Qemu-devel] Re: Fun with sparc (was Re: qemu-ppc can't run static uClibc binaries.), (continued)
- [Qemu-devel] Re: Fun with sparc (was Re: qemu-ppc can't run static uClibc binaries.), Blue Swirl, 2010/02/20
- [Qemu-devel] Re: Fun with sparc (was Re: qemu-ppc can't run static uClibc binaries.), Rob Landley, 2010/02/20
- [Qemu-devel] Commit 085219f79cad broke Sparc-32 back in 2.6.28., Rob Landley, 2010/02/21
- [Qemu-devel] Re: Commit 085219f79cad broke Sparc-32 back in 2.6.28., David Miller, 2010/02/22
- [Qemu-devel] Re: Commit 085219f79cad broke Sparc-32 back in 2.6.28., Bartlomiej Zolnierkiewicz, 2010/02/22
- [Qemu-devel] Re: Commit 085219f79cad broke Sparc-32 back in 2.6.28., Rob Landley, 2010/02/21
- [Qemu-devel] Re: Commit 085219f79cad broke Sparc-32 back in 2.6.28., David Miller, 2010/02/22
- [Qemu-devel] Re: Fun with sparc (was Re: qemu-ppc can't run static uClibc binaries.), Artyom Tarasenko, 2010/02/20
- [Qemu-devel] Re: Fun with sparc (was Re: qemu-ppc can't run static uClibc binaries.), Artyom Tarasenko, 2010/02/20
- [Qemu-devel] Re: Fun with sparc (was Re: qemu-ppc can't run static uClibc binaries.), Blue Swirl, 2010/02/20
- Re: [Qemu-devel] Re: qemu-ppc can't run static uClibc binaries.,
Rob Landley <=
- Re: [Qemu-devel] qemu-ppc can't run static uClibc binaries., Alexander Graf, 2010/02/15
- Re: [Qemu-devel] qemu-ppc can't run static uClibc binaries., Rob Landley, 2010/02/16
- Re: [Qemu-devel] qemu-ppc can't run static uClibc binaries., Alexander Graf, 2010/02/16
- Re: [Qemu-devel] qemu-ppc can't run static uClibc binaries., Rob Landley, 2010/02/16
- Re: [Qemu-devel] qemu-ppc can't run static uClibc binaries., Stuart Brady, 2010/02/16
- Re: [Qemu-devel] qemu-ppc can't run static uClibc binaries., Aurelien Jarno, 2010/02/28