Re: [9fans] 9vx on OpenBSD

Re: [9fans] 9vx on OpenBSD

[rsdehart]

A thousand pardons for any noise on the list, everyone. My phone hates me, and I it.
------Original Message------
From: ron minnich
Sender: 9fans-bounces@9fans.net
To: Fans of the OS Plan 9 from Bell Labs
ReplyTo: Fans of the OS Plan 9 from Bell Labs
Subject: Re: [9fans] 9vx on OpenBSD
Sent: Feb 15, 2011 6:10 PM

It's been a long day and my debugging skills are lukewarm ...

can you run it with -g -S and see if we get any more useful output?

ron



Sent via BlackBerry by AT&T

Re: [9fans] 9vx on OpenBSD

[Stanley Lieber]

> On Wed, Feb 16, 2011 at 8:42 AM, Stanley Lieber
> <stanley.lieber@gmail.com> wrote:
>> Well, it builds, but it doesn't run.
>>
>> % ./9vx -r /n/plan9 -u glenda
>> % 9vx panic: vxproc_run: Function not implemented
>
> I feel we've been here before. Can you do an strace?

OpenBSD has ktrace[1]. Here's the output for 'ktrace -t c ./9vx -r /n/plan9 -u glenda'::

http://openbsd.stanleylieber.com/9vx/ktrace

-sl

[1] http://www.openbsd.org/cgi-bin/man.cgi?query=ktrace

Re: [9fans] 9vx on OpenBSD

[Stanley Lieber]

Well, it builds, but it doesn't run.

% ./9vx -r /n/plan9 -u glenda
% 9vx panic: vxproc_run: Function not implemented

-sl

Re: [9fans] 9vx on OpenBSD

[Stanley Lieber]

> On Wed, Feb 16, 2011 at 7:36 AM, Stanley Lieber
> <stanley.lieber@gmail.com> wrote:
>> Reading old 9fans posts, I found Iru's modifications of vx32/9vx to run on OpenBSD 4.3.
>> With this minor change:
>>
>> src/9vx/Makefrag:184:       echo 'ulong kerndate ="' `date +%s` '";' >9vx/kerndate.h
>>
>> I was able to get it to build on a current snapshot of OpenBSD.
> 
> It really needs this change to run?
> 
> ron

Without the change, gmake dies here:

echo 'ulong kerndate =' `date +%s` ';' >9vx/kerndate.h
gcc -g -O3 -MD -std=gnu99 -I.  -I. -I9vx -I9vx/a -Wall -Wno-missing-braces -c -o 9vx/stub.o 9vx/stub.c
In file included from 9vx/stub.c:405:
9vx/kerndate.h:1: error: 'Wed' undeclared here (not in a function)
9vx/kerndate.h:1: error: expected ',' or ';' before 'Dec'
gmake: *** [9vx/stub.o] Error 1

-sl

[9fans] 9vx on OpenBSD

[Stanley Lieber]

Reading old 9fans posts, I found Iru's modifications of vx32/9vx to run on OpenBSD 4.3.
With this minor change:

src/9vx/Makefrag:184:       echo 'ulong kerndate ="' `date +%s` '";' >9vx/kerndate.h

I was able to get it to build on a current snapshot of OpenBSD.

Currently untested, but the modified source is here:

http://openbsd.stanleylieber.com/9vx/vx32-0.10-openbsd-4.9.tgz

Has anyone done any work for OpenBSD on more recent versions of 9vx?

-sl

Re: [9fans] 9vx on OpenBSD

[Anthony Martin]

> % ktrace -d ./9vx -r /n/plan9 -u glenda -g -S
>         namec #/
>         namec #e/terminal
>         namec #e/cputype
>         namec #e/rootdir
>         namec #e/service
>         namec #e/user
>         namec #e/sysname
>         namec #Zplan9/
>         namec /
>         namec #p
>         namec /proc
>         namec #~/mntloop
>         namec #Zplan9/
>         namec #s/boot
> 9vx panic: vxproc_run: Invalid argument

In src/libvx32/openbsd.c:/vxemu_map
	int s, sel;
	struct vxproc *vxp;
	union descriptor desc;

	...
		/*if(emu->datasel == 0){
			if ((s = i386_set_ldt(LDT_AUTO_ALLOC, &desc, 1)) < 0)
				return -1; */
		emu->datasel = (s<<3) + 4 + 3;  // 4=LDT, 3=RPL
		if(i386_set_ldt(emu->datasel >> 3, &desc, 1) < 0)
			return -1;
	...

The s variable is used un-initialized because
of the commented piece of code, causing EINVAL.
And since LDT_AUTO_ALLOC is only on FreeBSD or
Darwin, you're going to have to get it another
way.

At least, that's what I think from reading the
code since I don't have access to an OpenBSD box.

  Anthony

Re: [9fans] 9vx on OpenBSD

[Devon H. O'Dell]

[-- Attachment #1: Type: text/plain, Size: 210 bytes --]

He mentioned it being i386
On Feb 15, 2011 8:19 PM, "ron minnich" <rminnich@gmail.com> wrote:
> hey is this 64 or 32 bit system?
> uname -a?
> If you told me that already, sorry, I missed it.
>
> ron
>

[-- Attachment #2: Type: text/html, Size: 361 bytes --]

Re: [9fans] 9vx on OpenBSD

[Stanley Lieber]

> hey is this 64 or 32 bit system?
> uname -a?
> If you told me that already, sorry, I missed it.
>
> ron

% dmesg | sed 6q
OpenBSD 4.9-beta (GENERIC) #625: Fri Jan 14 21:56:02 MST 2011
    deraadt@i386.openbsd.org:/usr/src/sys/arch/i386/compile/GENERIC
cpu0: AMD Sempron(tm) Processor 3300+ ("AuthenticAMD" 686-class, 128KB L2 cache) 2.01 GHz
cpu0: FPU,V86,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,MMX,FXSR,SSE,SSE2,SSE3
real mem  = 1609068544 (1534MB)
avail mem = 1572626432 (1499MB)

-sl

Re: [9fans] 9vx on OpenBSD

[ron minnich]

hey is this 64 or 32 bit system?
uname -a?
If you told me that already, sorry, I missed it.

ron

Re: [9fans] 9vx on OpenBSD

[Stanley Lieber]

> It's been a long day and my debugging skills are lukewarm ...
>
> can you run it with -g -S and see if we get any more useful output?
>
> ron

% ktrace -d ./9vx -r /n/plan9 -u glenda -g -S
        namec #/
        namec #e/terminal
        namec #e/cputype
        namec #e/rootdir
        namec #e/service
        namec #e/user
        namec #e/sysname
        namec #Zplan9/
        namec /
        namec #p
        namec /proc
        namec #~/mntloop
        namec #Zplan9/
        namec #s/boot
9vx panic: vxproc_run: Invalid argument

ktrace here:

http://openbsd.stanleylieber.com/9vx/ktrace

-sl

Re: [9fans] 9vx on OpenBSD

[rsdehart]

------Original Message------
From: ron minnich
Sender: 9fans-bounces@9fans.net
To: Fans of the OS Plan 9 from Bell Labs
ReplyTo: Fans of the OS Plan 9 from Bell Labs
Subject: Re: [9fans] 9vx on OpenBSD
Sent: Feb 15, 2011 6:10 PM

It's been a long day and my debugging skills are lukewarm ...

can you run it with -g -S and see if we get any more useful output?

ron



Sent via BlackBerry by AT&T

Re: [9fans] 9vx on OpenBSD

[rsdehart]

D
------Original Message------
From: ron minnich
Sender: 9fans-bounces@9fans.net
To: Fans of the OS Plan 9 from Bell Labs
ReplyTo: Fans of the OS Plan 9 from Bell Labs
Subject: Re: [9fans] 9vx on OpenBSD
Sent: Feb 15, 2011 6:10 PM

It's been a long day and my debugging skills are lukewarm ...

can you run it with -g -S and see if we get any more useful output?

ron



Sent via BlackBerry by AT&T

Re: [9fans] 9vx on OpenBSD

[ron minnich]

It's been a long day and my debugging skills are lukewarm ...

can you run it with -g -S and see if we get any more useful output?

ron

Re: [9fans] 9vx on OpenBSD

[Stanley Lieber]

>>> % 9vx panic: vxproc_run: Function not implemented
>
> This sounds like a problem setting up the LDT.
> Are you on amd64 or i386? Also, you should run
> ktrace with the -d flag so we can see a trace
> of the child procs.
>
>   Anthony

i386. This made me think to check sysctl.conf, but it's set machdep.userldt=1.

Here is new output from ktrace -d:

http://openbsd.stanleylieber.com/9vx/ktrace

-sl

Re: [9fans] 9vx on OpenBSD

[Anthony Martin]

>> % 9vx panic: vxproc_run: Function not implemented

This sounds like a problem setting up the LDT.
Are you on amd64 or i386? Also, you should run
ktrace with the -d flag so we can see a trace
of the child procs.

  Anthony

Re: [9fans] 9vx on OpenBSD

[ron minnich]

On Wed, Feb 16, 2011 at 8:42 AM, Stanley Lieber
<stanley.lieber@gmail.com> wrote:
> Well, it builds, but it doesn't run.
>
> % ./9vx -r /n/plan9 -u glenda
> % 9vx panic: vxproc_run: Function not implemented

I feel we've been here before. Can you do an strace?

ron

Re: [9fans] 9vx on OpenBSD

[ron minnich]

On Wed, Feb 16, 2011 at 7:36 AM, Stanley Lieber
<stanley.lieber@gmail.com> wrote:
> Reading old 9fans posts, I found Iru's modifications of vx32/9vx to run on OpenBSD 4.3.
> With this minor change:
>
> src/9vx/Makefrag:184:       echo 'ulong kerndate ="' `date +%s` '";' >9vx/kerndate.h
>
> I was able to get it to build on a current snapshot of OpenBSD.

It really needs this change to run?

ron