Re: [Qemu-devel] Compiling qemu as position-independent code on an x86_64 linux host

[G Portokalidis]

I managed to compile and use qemu as a shared library for the ii386
user space emulator.
I didn't use -fPIC to compile anything and simply generated the lib by
adding something like this in Makefile.target:
$(CC) -shared -Wl,-soname,libqemu.so.0 -o libqemu.so.0  $(LIBOBJS) -lc

I am not sure it should work under all circumstances. It also works
when USE_CODE_COPY is not defined.



On 14/12/06, G Portokalidis <address@hidden> wrote:
> Hello Paul,
> I also need to use qemu as a shared library, so i was wandering
> whether you had any luck with this?
>
> On 03/11/06, Paul Robinson <address@hidden> wrote:
> >
> >
> >
> > Hi guys,
> >
> > I'm trying to use parts of qemu in an application that must be compiled as a
> > shared library (i.e. a .so file).
> > The code must be compiled with the -fPIC option otherwise the linker refuses
> > to create a .so file
> > but doing this causes dyngen to stop with the error:
> > ../dyngen -o op.h op.o
> > dyngen: unsupported X86_64 relocation (9)
> >
> > In dyngen-exec.h, if I change
> > extern int __op_param1, __op_param2, __op_param3;
> > to
> > static int __op_param1, __op_param2, __op_param3;
> > then dyngen stops with
> > dyngen: unsupported X86_64 relocation (4)
> >
> > I suspect that I need to resort to assembly language (as has been done for
> > alpha hosts).
> >
> > My question is:
> > Has anyone already done this ? (so I don't have to re-invent the wheel).
> >
> > The nearest I've found so far is Johannes Schindelin's "Porting QEMU to [a]
> > new CPU" guide.
> >
> > Regards,
> > Paul R.
> > _______________________________________________
> > Qemu-devel mailing list
> > address@hidden
> > http://lists.nongnu.org/mailman/listinfo/qemu-devel
> >
> >
> >