[PATCH v3 4/5] powerpc/vdso: Wire up getrandom() vDSO implementation on PPC32
Christophe Leroy
christophe.leroy at csgroup.eu
Sat Aug 31 02:42:55 AEST 2024
Le 30/08/2024 à 18:14, Jason A. Donenfeld a écrit :
> 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?
Unlike the keys, the counter is passed to the function as an u8*, not as
a u64*, so I thought it was raw data in little endian order, same as
when using Sodium. Is it wrong ?
Christophe
More information about the Linuxppc-dev
mailing list