Re: [OpenBIOS] [PATCH] Add tbu@ and tbl@ words

[Jd Lyons]

> On Dec 27, 2017, at 1:35 PM, John Arbuckle  wrote:
>
> The PowerPC timebase register is made available to forth using
> the tbu@ and tbl@ words. The tbu@ word pushes the upper 32 bits
> of this register. The tbl@ word pushes the lower 32 bits of
> this register.
> Signed-off-by: John Arbuckle
>
> arch/ppc/qemu/init.c | 20 ++++++++++++++++++++
> 1 file changed, 20 insertions(+)
>
> diff --git a/arch/ppc/qemu/init.c b/arch/ppc/qemu/init.c
> index 5ce080c..d12084c 100644
> --- a/arch/ppc/qemu/init.c
> +++ b/arch/ppc/qemu/init.c
> @@ -751,6 +751,22 @@ static void adler32(void)
>     RET(s2 << 16 | s1);
> }
>
> +/* reads the upper timebase register ( -- tbu ) */
> +static void get_tbu(void)
> +{
> int time;
> asm volatile("mftbu %0" : "=r"(time)); // load from TBU register
> PUSH(time);
>
> +}
>
> +/* reads the lower timebase register ( -- tbl ) */
> +static void get_tbl(void)
> +{
> int time;
> asm volatile("mftb %0" : "=r"(time)); // load from TBL register
> PUSH(time);
>
> +}
>
> void
> arch_of_init(void)
> {
> @@ -1022,4 +1038,8 @@ arch_of_init(void)
> bind_func("platform-boot", boot);
> bind_func("(arch-go)", arch_go);
> /* Makes the timebase register accessible from forth */
> bind_func("tbu@", get_tbu);
> bind_func("tbl@", get_tbl);
> }
>
> 2.14.3 (Apple Git-98)

Ok, dumb question, how do I pull and apply this patch?