Re: [Minios-devel] [UNIKRAFT PATCH 12/17] arch/x86_64: Add function for stack pointer retrieval

[Simon Kuenzer <simon.kuenzer@xxxxxxxxx>]

Reviewed-by: Simon Kuenzer <simon.kuenzer@xxxxxxxxx>

On 27.03.2018 14:29, Costin Lupu wrote:
> Signed-off-by: Costin Lupu <costin.lupu@xxxxxxxxx>
> ---
>   include/uk/arch/x86_64/lcpu.h | 8 ++++++++
>   1 file changed, 8 insertions(+)
>
> diff --git a/include/uk/arch/x86_64/lcpu.h b/include/uk/arch/x86_64/lcpu.h
> index 1750c6f..8c70540 100644
> --- a/include/uk/arch/x86_64/lcpu.h
> +++ b/include/uk/arch/x86_64/lcpu.h
> @@ -47,3 +47,11 @@
>   #ifndef nop
>   #define nop()   __asm__ __volatile__ ("nop" : : : "memory")
>   #endif
> +
> +static inline unsigned long ukarch_read_sp(void)
> +{
> +       unsigned long sp;
> +
> +       __asm__ __volatile__("mov %%rsp, %0" : "=r"(sp));
> +       return sp;
> +}
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