Re: [Qemu-devel] Running the user emulation

[Stefan Weil]

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 <address@hidden> 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