[cfe-dev] Clang and -mcmodel=large

Andrea Orrù andreaorru91 at gmail.com
Sun Jun 7 10:13:54 PDT 2009


Do you confirm that? Do I have to put the same question in the llvm mailing
list?

2009/6/7 Sebastian Redl <sebastian.redl at getdesigned.at>

> Andrea Orrů wrote:
> > Hello all,
> >
> > I'm developing a hobby kernel for x86-64 machines,
> > and I put the kernel into the higher half.
> >
> > I'm trying to switch from GCC to Clang, but it seems
> > that the latter doesn't support the -mcmodel=large
> > option, which is required in order to put the kernel
> > at the 0xFFFF800000000000 in virtual memory,
> > as specified in my linker script:
> > http://pastebin.com/f2f9e0112
> >
> > Any workarounds or plans for implementing that feature
> > in the Clang compiler?
> Does Clang proper even care about the memory model? I think this is more
> an issue for LLVM core than Clang.
>
> Sebastian
>
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