[PATCH 2/8] bootwrapper: missing relocation in crt0.S

[Paul Mackerras]

Milton Miller writes:

> crt0.S had provisions to provide run address relocaton to got2 and
> cache flush, but not on the bss clear or stack pointer load.  Apply
> the same fixup for them.
> 
> Signed-off-by: Milton Miller <miltonm at bga.com>
> --- 
> Compiles and links.  Stack is created within the image when linked at
> 4M and run at 0.  Did not verify bss relocation.
> 
> Index: kernel/arch/powerpc/boot/crt0.S
> ===================================================================
> --- kernel.orig/arch/powerpc/boot/crt0.S	2007-03-16 23:22:00.000000000 -0500
> +++ kernel/arch/powerpc/boot/crt0.S	2007-03-16 23:42:42.000000000 -0500
> @@ -63,21 +63,30 @@ _zimage_start:
>  	/* Clear the BSS */
>  	lis	r9,__bss_start at ha
>  	addi	r9,r9,__bss_start at l
> +	add	r9,r0,r9
>  	lis	r8,_end at ha
>  	addi	r8,r8,_end at l
> +	add	r8,r0,r8
>  	li	r0,0
>  5:	stw	r0,0(r9)

How about changing the last two instructions here to use r10 instead
of r0 so we don't need to recreate the relocation offset?

Paul.