[PATCH] powerpc/setjmp: Add 64-bit support

[Sebastian Huber]

Hello Jeff,

On 23/09/2022 20:04, Jeff Johnston wrote:
> Just a couple of questions/issues:
> 
> 1. How did you arrive at 70 doubles and 43 doubles length values?

the 70 is the final offset 432 + 16 + 96 == 544 plus 16 for the 
alignment divided by 8 (size of double). I checked this also with the 
debugger.

The 43 is the final offset 232 + 8 + 96 == 336 plus 8 for the alignment 
divided by 8.

> 2. It appears that __SPE__ is not accounted for in setjmp.h

The SPE is only used in 32-bit processors without a FPU or Altivec unit. 
So, 256 bytes for the jmp_buf are enough.

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