From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1HrN1Q-0005VZ-Gq for qemu-devel@nongnu.org; Thu, 24 May 2007 19:47:08 -0400 Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1HrN1O-0005V1-Nt for qemu-devel@nongnu.org; Thu, 24 May 2007 19:47:08 -0400 Received: from [199.232.76.173] (helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1HrN1O-0005Uu-G8 for qemu-devel@nongnu.org; Thu, 24 May 2007 19:47:06 -0400 Received: from web54606.mail.re2.yahoo.com ([206.190.49.176]) by monty-python.gnu.org with smtp (Exim 4.60) (envelope-from ) id 1HrN1N-0008Ce-OW for qemu-devel@nongnu.org; Thu, 24 May 2007 19:47:06 -0400 Date: Thu, 24 May 2007 16:47:04 -0700 (PDT) From: sinisa marovic Subject: Re: [Qemu-devel] Porting QEMU to PalmOS MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="0-2090955394-1180050424=:52237" Message-ID: <975046.52237.qm@web54606.mail.re2.yahoo.com> Reply-To: qemu-devel@nongnu.org List-Id: qemu-devel.nongnu.org List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org --0-2090955394-1180050424=:52237 Content-Type: text/plain; charset=ascii It sure is. I use prc-tools. It is free, and, well, it's gcc. There is also developer suite called CodeWarrior, but that is for wimps ;) (expensive too). I can give you some guidelines off the mailing list (I do not think others are interested in coding for palm). ----- Original Message ---- From: Jonathan Kalbfeld To: qemu-devel@nongnu.org Sent: Friday, May 25, 2007 1:33:26 AM Subject: Re: [Qemu-devel] Porting QEMU to PalmOS Still sounds fantistically fun. Maybe you can point me in the right direction to write PalmOS programs (.prc's right?). I have some goofy ideas for things to write for my Treo. jonathan On 5/24/07, sinisa marovic wrote: I'm afraid I will have to dissapoint you: it will be only isapc with no networking or other fancy devices. Main goal is the ability to run dos games. I do not know how familiar are you with PalmOS developer support. It is poor, gcc lack many important functions that have to be written from scratch. When I ported dosbox (which is written in c++) I realized that there is no support for vectors, iterators, namespaces etc, so I had to write many operators myself. The biggest problem with QEMU is that it uses signals a lot, and, guess what, PalmOS has no support for signals _at_ _all_. I found a way to get things going without them for now, but this has it's drawbacks. I will have to think about something better later on. ----- Original Message ---- From: Jonathan Kalbfeld < jonathan.kalbfeld@gmail.com> To: qemu-devel@nongnu.org Sent: Thursday, May 24, 2007 11:18:48 PM Subject: Re: [Qemu-devel] Porting QEMU to PalmOS One definite plus with having QEMU for PalmOS is the ability to run things like OpenVPN (even if slow) and connect to a VPN back-end. As is, I use OpenVPN tunnels to link up my QEMU machines on Solaris. jonathan On 5/23/07, Wolfgang Schildbach < Wolfgang.Schildbach@codingtechnologies.com> wrote: Try compiling as position-dependent (i.e. not PIC) code. GOT is a typical feature of position independent code. - Wolfgang qemu-devel-bounces+wolfgang.schildbach=codingtechnologies.com@nongnu.org wrote on 23.05.2007 13:20:22: > Hi Johannes, > > thanks for your quick response. > I thought QEMU was already compiled and run on an ARM machine? > If so, how come that noone else had such problem (I searched for it > on google), > and PXA255 is a standard ARM CPU with a few additional instructions. > And how to make them not come from GOT, those vars are declared as extern, > so they are globals? > > BR, > Voda. > ----- Original Message ---- > From: Johannes Schindelin < Johannes.Schindelin@gmx.de > > To: sinisa marovic > Cc: qemu-devel@nongnu.org > Sent: Wednesday, May 23, 2007 12:48:59 PM > Subject: Re: [Qemu-devel] Porting QEMU to PalmOS > Hi, > > On Wed, 23 May 2007, sinisa marovic wrote: > > > Relocation types that fail are 25 and 26, which are R_ARM_GOTPC and > > R_ARM_GOT32 respectively. Their names are: > > > > _GLOBAL_OFFSET_TABLE_ > > cc_table > > __op_param1 > > __op_param2 > > __op_param3 > > > > Is there a way to fix this? > > The GOT is an offset table. Many CPUs have fixed-size instruction sets, > which means that you cannot easily jump to an absolute address, since the > address alone would already fill up the size. > > Of course, this is a no-no for QEmu, since the _same_ function snippet > will be reused _multiple_ times. So, the address must not come from a GOT, > but be inserted directly into the code. > > I do not remember off-hand how I managed to do this a couple of years ago, > when I worked on a MIPS host, but there _are_ gcc options to avoid a GOT. > > Hth, > Dscho > > > Food fight? Enjoy some healthy debate > in the Yahoo! Answers Food & Drink Q&A. -- -- Jonathan Kalbfeld +1 323 620 6682 Get the free Yahoo! toolbar and rest assured with the added security of spyware protection. -- -- Jonathan Kalbfeld +1 323 620 6682 ____________________________________________________________________________________ Never miss an email again! Yahoo! Toolbar alerts you the instant new Mail arrives. http://tools.search.yahoo.com/toolbar/features/mail/ --0-2090955394-1180050424=:52237 Content-Type: text/html; charset=ascii
It sure is.
I use prc-tools. It is free, and, well, it's gcc. There is also developer suite called CodeWarrior,
but that is for wimps ;) (expensive too). I can give you some guidelines off the mailing list
(I do not think others are interested in coding for palm).

----- Original Message ----
From: Jonathan Kalbfeld <jonathan.kalbfeld@gmail.com>
To: qemu-devel@nongnu.org
Sent: Friday, May 25, 2007 1:33:26 AM
Subject: Re: [Qemu-devel] Porting QEMU to PalmOS

Still sounds fantistically fun.

Maybe you can point me in the right direction to write PalmOS programs (.prc's right?).

I have some goofy ideas for things to write for my Treo.

jonathan

On 5/24/07, sinisa marovic <sinisamarovic@yahoo.com> wrote:
I'm afraid I will have to dissapoint you: it will be only isapc with no
networking or other fancy devices. Main goal is the ability to run dos games.
I do not know how familiar are you with PalmOS developer support. It
is poor, gcc lack many important functions that have to be written from
scratch. When I ported dosbox (which is written in c++) I realized that
there is no support for vectors, iterators, namespaces etc, so I had to
write many operators myself. The biggest problem with QEMU is that
it uses signals a lot, and, guess what, PalmOS has no support for signals
_at_ _all_. I found a way to get things going without them for now, but
this has it's drawbacks. I will have to think about something better later on.
 
----- Original Message ----
From: Jonathan Kalbfeld < jonathan.kalbfeld@gmail.com>
To: qemu-devel@nongnu.org
Sent: Thursday, May 24, 2007 11:18:48 PM
Subject: Re: [Qemu-devel] Porting QEMU to PalmOS

One definite plus with having QEMU for PalmOS is the ability to run things like OpenVPN (even if slow) and connect to a VPN back-end.

As is, I use OpenVPN tunnels to link up my QEMU machines on Solaris.

jonathan

On 5/23/07, Wolfgang Schildbach < Wolfgang.Schildbach@codingtechnologies.com> wrote:
Try compiling as position-dependent (i.e. not PIC) code. GOT is a typical
feature of position independent code.

- Wolfgang

qemu-devel-bounces+wolfgang.schildbach=codingtechnologies.com@nongnu.org
wrote on 23.05.2007 13:20:22:

> Hi Johannes,
>
>    thanks for your quick response.
> I thought QEMU was already compiled and run on an ARM machine?
> If so, how come that noone else had such problem (I searched for it
> on google),
> and PXA255 is a standard ARM CPU with a few additional instructions.
> And how to make them not come from GOT, those vars are declared as
extern,
> so they are globals?
>
> BR,
>    Voda.

> ----- Original Message ----
> From: Johannes Schindelin < Johannes.Schindelin@gmx.de >
> To: sinisa marovic <sinisamarovic@yahoo.com>
> Cc: qemu-devel@nongnu.org
> Sent: Wednesday, May 23, 2007 12:48:59 PM
> Subject: Re: [Qemu-devel] Porting QEMU to PalmOS

> Hi,
>
> On Wed, 23 May 2007, sinisa marovic wrote:
>
> > Relocation types that fail are 25 and 26, which are R_ARM_GOTPC and
> > R_ARM_GOT32 respectively. Their names are:
> >
> > _GLOBAL_OFFSET_TABLE_
> > cc_table
> > __op_param1
> > __op_param2
> > __op_param3
> >
> > Is there a way to fix this?
>
> The GOT is an offset table. Many CPUs have fixed-size instruction sets,
> which means that you cannot easily jump to an absolute address, since
the
> address alone would already fill up the size.
>
> Of course, this is a no-no for QEmu, since the _same_ function snippet
> will be reused _multiple_ times. So, the address must not come from a
GOT,
> but be inserted directly into the code.
>
> I do not remember off-hand how I managed to do this a couple of years
ago,
> when I worked on a MIPS host, but there _are_ gcc options to avoid a
GOT.
>
> Hth,
> Dscho
>
>
> Food fight? Enjoy some healthy debate
> in the Yahoo! Answers Food & Drink Q&A.






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