diff mbox series

[04/18] target/ppc: Use clmul_8* routines

Message ID 20230713211435.13505-5-richard.henderson@linaro.org
State New
Headers show
Series crypto: Provide clmul.h and host accel | expand

Commit Message

Richard Henderson July 13, 2023, 9:14 p.m. UTC 
Use generic routines for 8-bit carry-less multiply.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 target/ppc/int_helper.c | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/target/ppc/int_helper.c b/target/ppc/int_helper.c
index 834da80fe3..3bf0f5dbe5 100644
--- a/target/ppc/int_helper.c
+++ b/target/ppc/int_helper.c
@@ -26,6 +26,7 @@ 
 #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"
@@ -1425,6 +1426,15 @@  void helper_vbpermq(ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b)
 #undef VBPERMQ_INDEX
 #undef VBPERMQ_DW
 
+void helper_vpmsumb(ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b)
+{
+    Int128 ia = a->s128;
+    Int128 ib = b->s128;
+    Int128 e = clmul_8x8_even(ia, ib);
+    Int128 o = clmul_8x8_odd(ia, ib);
+    r->s128 = int128_xor(e, o);
+}
+
 #define PMSUM(name, srcfld, trgfld, trgtyp)                   \
 void helper_##name(ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b)  \
 {                                                             \
@@ -1445,7 +1455,6 @@  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)