| Message ID | 20230819010218.192706-17-richard.henderson@linaro.org |
|---|---|
| State | Superseded |
| Headers | show |
| Series | crypto: Provide clmul.h and host accel | expand |
On 19/8/23 03:02, Richard Henderson wrote: > Use generic routine for 64-bit carry-less multiply. > > Signed-off-by: Richard Henderson <richard.henderson@linaro.org> > --- > target/ppc/int_helper.c | 17 +++-------------- > 1 file changed, 3 insertions(+), 14 deletions(-) Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
diff --git a/target/ppc/int_helper.c b/target/ppc/int_helper.c index ce793cf163..432834c7d5 100644 --- a/target/ppc/int_helper.c +++ b/target/ppc/int_helper.c @@ -1456,20 +1456,9 @@ void helper_vpmsumw(ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b) void helper_VPMSUMD(ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b) { - int i, j; - Int128 tmp, prod[2] = {int128_zero(), int128_zero()}; - - for (j = 0; j < 64; j++) { - for (i = 0; i < ARRAY_SIZE(r->u64); i++) { - if (a->VsrD(i) & (1ull << j)) { - tmp = int128_make64(b->VsrD(i)); - tmp = int128_lshift(tmp, j); - prod[i] = int128_xor(prod[i], tmp); - } - } - } - - r->s128 = int128_xor(prod[0], prod[1]); + Int128 e = clmul_64(a->u64[0], b->u64[0]); + Int128 o = clmul_64(a->u64[1], b->u64[1]); + r->s128 = int128_xor(e, o); } #if HOST_BIG_ENDIAN
Use generic routine for 64-bit carry-less multiply. Signed-off-by: Richard Henderson <richard.henderson@linaro.org> --- target/ppc/int_helper.c | 17 +++-------------- 1 file changed, 3 insertions(+), 14 deletions(-)