diff options
| author | Richard Henderson <richard.henderson@linaro.org> | 2023-07-11 08:00:21 +0100 |
|---|---|---|
| committer | Richard Henderson <richard.henderson@linaro.org> | 2023-09-15 13:57:00 +0000 |
| commit | cec4090d9487be9afe937b055e02a82c33e53320 (patch) | |
| tree | fcdbe1e3228ea31a64852c14febeecc92471a083 /target | |
| parent | 2d8bc6815e9a1c81f0aa0a1365c4d9a1e0cb0a81 (diff) | |
target/ppc: Use clmul_8* routines
Use generic routines for 8-bit carry-less multiply.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Diffstat (limited to 'target')
| -rw-r--r-- | target/ppc/int_helper.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/target/ppc/int_helper.c b/target/ppc/int_helper.c index 96cdb3c7e3..f45b24d321 100644 --- a/target/ppc/int_helper.c +++ b/target/ppc/int_helper.c @@ -25,6 +25,7 @@ #include "exec/helper-proto.h" #include "crypto/aes.h" #include "crypto/aes-round.h" +#include "crypto/clmul.h" #include "fpu/softfloat.h" #include "qapi/error.h" #include "qemu/guest-random.h" @@ -1424,6 +1425,18 @@ void helper_vbpermq(ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b) #undef VBPERMQ_INDEX #undef VBPERMQ_DW +/* + * There is no carry across the two doublewords, so their order does + * not matter. Nor is there partial overlap between registers. + */ +void helper_vpmsumb(ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b) +{ + for (int i = 0; i < 2; ++i) { + uint64_t aa = a->u64[i], bb = b->u64[i]; + r->u64[i] = clmul_8x4_even(aa, bb) ^ clmul_8x4_odd(aa, bb); + } +} + #define PMSUM(name, srcfld, trgfld, trgtyp) \ void helper_##name(ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b) \ { \ @@ -1444,7 +1457,6 @@ void helper_##name(ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b) \ } \ } -PMSUM(vpmsumb, u8, u16, uint16_t) PMSUM(vpmsumh, u16, u32, uint32_t) PMSUM(vpmsumw, u32, u64, uint64_t) |