From: C K Kashyap <ckkashyap@gmail.com>
To: Stefan Weil <weil@mail.berlios.de>
Cc: qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] Running the user emulation
Date: Wed, 11 Aug 2010 15:03:28 +0530 [thread overview]
Message-ID: <AANLkTinREy-9RnGvoo3io_53bSfFJ2z_yTQJRt778eRD@mail.gmail.com> (raw)
In-Reply-To: <4C626AC8.8050908@mail.berlios.de>
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I was wondering if it would be easy to force build the user-emulation on mac
- as in, lets say my a.out from linux is really trivial - even statically
linked for that matter. All it does is, say, write "hello world\n" to the
screen - I'd imaging that write system call would be similar on mac (as far
as writing to stdout is concerned) .... Would it be possible/easy to give it
a shot?
On Wed, Aug 11, 2010 at 2:48 PM, Stefan Weil <weil@mail.berlios.de> wrote:
> Am 11.08.2010 11:06, schrieb C K Kashyap:
>
> Let me see if I understand this right -
>
> qemu loads the a.out and begins to interpret the x86 instructions in the
> a.out and when a system call happens, it makes the call the host system ....
> is that right?
>
>
>
> Right. That's the way how linux user mode emulation (for example qemu-i386)
> works.
> See linux-user/syscall.c if you want to see more details.
>
> bsd-user and darwin-user are also supported (more or less), but darwin-user
> only supports translation of darwin/powerpc to darwin/x86 syscalls.
> It won't help you to run a linux a.out on your mac.
>
>
>
>
> On Wed, Aug 11, 2010 at 2:12 PM, Stefan Weil <weil@mail.berlios.de> wrote:
>
> Am 11.08.2010 10:31, schrieb C K Kashyap:
>
> Hi,
> I've built qemu on my mac osx using this config -
> ./configure --prefix=/Users/ckk/local/ --target-list="i386-softmmu
> x86_64-softmmu" --enable-linux-user
>
> Now, I have a simple a.out built on linux - how can I run it using qemu on
> my mac box?
>
> --
> Regards,
> Kashyap
>
>
> Hi Kashyap,
>
> you cannot run it in user mode emulation unless you replace Mac OS by Linux
> on your mac box. Linux user emulations requires a Linux host.
>
> If you have a Linux host, you would need --target-list=i386-linux-user.
>
> You can run your a.out if you run system emulation (e.g. i386-softmmu/qemu)
> and install Linux there, of course.
>
> Regards,
> Stefan
>
>
>
>
> --
> Regards,
> Kashyap
>
>
>
--
Regards,
Kashyap
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next prev parent reply other threads:[~2010-08-11 9:33 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-08-11 8:31 [Qemu-devel] Running the user emulation C K Kashyap
2010-08-11 8:42 ` Stefan Weil
2010-08-11 9:06 ` C K Kashyap
2010-08-11 9:18 ` Stefan Weil
2010-08-11 9:33 ` C K Kashyap [this message]
2010-08-11 10:03 ` Stefan Weil
2010-08-11 11:26 ` C K Kashyap
2010-08-11 18:38 ` Natalia Portillo
2010-08-12 8:37 ` C K Kashyap
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