Call for help: clang/llvm for sparc64

[Roman Divacky]

Btw, can someone test this patch? ie. compile (with gcc) sparc64 kernel
with it and boot it?

> Yes, I had to fix that but forgot to upstream it.
> 
> Index: sparc64/include/pcpu.h
> ===================================================================
> --- sparc64/include/pcpu.h      (revision 259767)
> +++ sparc64/include/pcpu.h      (working copy)
> @@ -70,9 +70,26 @@
>  struct pcb;
>  struct pcpu;
>  
> -register struct pcb *curpcb __asm__(__XSTRING(PCB_REG));
> -register struct pcpu *pcpup __asm__(__XSTRING(PCPU_REG));
> +static __inline __pure2 struct pcb *
> +__curpcb(void)
> +{
> +       struct pcb *pcb;
>  
> +       __asm("ldx [%" __XSTRING(PCB_REG) "], %0" : "=r" (pcb));
> +       return (pcb);
> +}
> +#define curpcb (__curpcb())
> +
> +static __inline __pure2 struct pcpu *
> +__curpcpu(void)
> +{
> +       struct pcpu *pcpu;
> +
> +       __asm("ldx [%" __XSTRING(PCPU_REG) "], %0" : "=r" (pcpu));
> +       return (pcpu);
> +}
> +#define pcpup  (__curpcpu())
> +
>  #define        PCPU_GET(member)        (pcpup->pc_ ## member)
>  
>  static __inline __pure2 struct thread *
> 
> 
> the llvm sparc64 is not yet ready for wide consumption. Once llvm 3.4 is imported
> (days now) the sparc64 backend will be enabled as well. Then I plan to backport
> all the fixes from llvm trunk to enable it to selfhost. So that we can build
> llvm 3.5 with llvm itself. This is necesary as llvm is becoming c++11 only.
> 
> Roman