Hello,
On 4/12/18 10:15, Ahmad Fatoum wrote:
> Cc: Lucas Stach <l.stach@xxxxxxxxxxxxxx>
> Signed-off-by: Ahmad Fatoum <a.fatoum@xxxxxxxxxxxxxx>
> ---
> arch/arm/include/asm/common.h | 6 ++++++
> 1 file changed, 6 insertions(+)
>
> diff --git a/arch/arm/include/asm/common.h b/arch/arm/include/asm/common.h
> index c32cdfe5ec2f..72ac988cc131 100644
> --- a/arch/arm/include/asm/common.h
> +++ b/arch/arm/include/asm/common.h
> @@ -46,6 +46,12 @@ static inline unsigned long get_sp(void)
> return sp;
> }
>
> +/*
> + * At least with GCC 7.3.1, listing sp in the clobber register can generate
> + * erroneous accesses to the fp, even in __naked functions. Therefore _always_
> + * branch to a noinline function as soon as possible (usually after relocation
> + * and c_setup).
> + */
> static inline void arm_setup_stack(unsigned long top)
> {
> __asm__ __volatile__("mov sp, %0"
>
any comments?
Cheers
Ahmad
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