Re: [PATCH v3 4/5] powerpc/vdso: Wire up getrandom() vDSO implementation on PPC32
From: Jason A. Donenfeld
Date: Fri Aug 30 2024 - 12:15:10 EST
On Fri, Aug 30, 2024 at 05:57:08PM +0200, Christophe Leroy wrote:
> + * r5: 8-byte counter input/output (saved on stack)
> + *
> + * r14-r15: counter
> + */
> +SYM_FUNC_START(__arch_chacha20_blocks_nostack)
> + stwu r1, -96(r1)
> + stw r5, 20(r1)
> + stmw r14, 24(r1)
> + li r31, 4
> + LWZX_LE r14, 0, r5
> + LWZX_LE r15, r31, r5
Why swap endian on the counter?