Re: [Qemu-devel] Linux framebuffer emulation in qemu linux-user

[Ilyes Gouta]

On Thu, Sep 9, 2010 at 9:39 PM, Ilyes Gouta <address@hidden> wrote:

Hi,

Well, actually I'd like to run sh4 binaries in linux-user mode, where these are actually DirectFB applications which rely on the standard Linux framebuffer to display things.

In my use case, I'd like to route these ioctl in qemu to be handled by the SDL back-end (or even a DirectFB instance running on the host) instead of being dispatched to the native framebuffer driver, running on the host.

Is this feature available in the current qemu code base?

Thanks,

-Ilyes

On Thu, Sep 9, 2010 at 9:28 PM, Blue Swirl <address@hidden> wrote:

On Thu, Sep 9, 2010 at 8:19 PM, Ilyes Gouta <address@hidden> wrote:
> Hi,
> Is it possible, as of today, to emulate a classic Linux framebuffer when
> using qemu linux-user mode?
> At a first glance, I saw in the code that
> FBIOGET_FSCREENINFO, FBIOGET_VSCREENINFO and FBIOPUT_VSCREENINFO being
> declared by couldn't locate where they're handled. Are these hooked to the
> SDL back-end?

SDL is only used for system emulation. It should be possible to add
conversions (for example, from PPC 32 bit BE to x86_64 64 bit LE) for
FB ioctls in order to pass them to the host FB device. But what would
be the use case for this?