Hi, > No, but it could be possible to convert the DirectFB ioctl structures > between guest and host. Other ioctls are translated this way. I guess > nobody has cared about framebuffer support yet.
DirectFB (on the sh4 side) is just a client which is interacting with the framebuffer. It doesn't have its "own" set of ioctls. Is handling FBIOGET_FSCREENINFO, FBIOGET_VSCREENINFO and FBIOPUT_VSCREENINFO enough to abstract a basic Linux framebuffer and emulate it (by not forwarding these to a native framebuffer)? -Ilyes On Thu, Sep 9, 2010 at 9:57 PM, Blue Swirl <blauwir...@gmail.com> wrote: > On Thu, Sep 9, 2010 at 8:39 PM, Ilyes Gouta <ilyes.go...@gmail.com> 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? > > No, but it could be possible to convert the DirectFB ioctl structures > between guest and host. Other ioctls are translated this way. I guess > nobody has cared about framebuffer support yet. > > See linux-user/ioctls.h. > > > Thanks, > > -Ilyes > > > > On Thu, Sep 9, 2010 at 9:28 PM, Blue Swirl <blauwir...@gmail.com> wrote: > >> > >> On Thu, Sep 9, 2010 at 8:19 PM, Ilyes Gouta <ilyes.go...@gmail.com> > 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? > > > > >
