From: Richard Henderson <richard.henderson@linaro.org>
To: qemu-devel@nongnu.org
Subject: [PULL 04/19] target/ppc: Use clmul_8* routines
Date: Fri, 15 Sep 2023 09:42:16 -0700 [thread overview]
Message-ID: <20230915164231.123580-5-richard.henderson@linaro.org> (raw)
In-Reply-To: <20230915164231.123580-1-richard.henderson@linaro.org>
Use generic routines for 8-bit carry-less multiply.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
target/ppc/int_helper.c | 14 +++++++++++++-
1 file changed, 13 insertions(+), 1 deletion(-)
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)
--
2.34.1
next prev parent reply other threads:[~2023-09-15 16:44 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-09-15 16:42 [PULL 00/19] crypto: Provide clmul.h and host accel Richard Henderson
2023-09-15 16:42 ` [PULL 01/19] crypto: Add generic 8-bit carry-less multiply routines Richard Henderson
2023-09-15 16:42 ` [PULL 02/19] target/arm: Use clmul_8* routines Richard Henderson
2023-09-15 16:42 ` [PULL 03/19] target/s390x: " Richard Henderson
2023-09-15 16:42 ` Richard Henderson [this message]
2023-09-15 16:42 ` [PULL 05/19] crypto: Add generic 16-bit carry-less multiply routines Richard Henderson
2023-09-15 16:42 ` [PULL 06/19] target/arm: Use clmul_16* routines Richard Henderson
2023-09-15 16:42 ` [PULL 07/19] target/s390x: " Richard Henderson
2023-09-15 16:42 ` [PULL 08/19] target/ppc: " Richard Henderson
2023-09-15 16:42 ` [PULL 09/19] crypto: Add generic 32-bit carry-less multiply routines Richard Henderson
2023-09-15 16:42 ` [PULL 10/19] target/arm: Use clmul_32* routines Richard Henderson
2023-09-15 16:42 ` [PULL 11/19] target/s390x: " Richard Henderson
2023-09-15 16:42 ` [PULL 12/19] target/ppc: " Richard Henderson
2023-09-15 16:42 ` [PULL 13/19] crypto: Add generic 64-bit carry-less multiply routine Richard Henderson
2023-09-15 16:42 ` [PULL 14/19] target/arm: Use clmul_64 Richard Henderson
2023-09-15 16:42 ` [PULL 15/19] target/i386: " Richard Henderson
2023-09-15 16:42 ` [PULL 16/19] target/s390x: " Richard Henderson
2023-09-15 16:42 ` [PULL 17/19] target/ppc: " Richard Henderson
2023-09-15 16:42 ` [PULL 18/19] host/include/i386: Implement clmul.h Richard Henderson
2023-09-15 16:42 ` [PULL 19/19] host/include/aarch64: " Richard Henderson
2023-09-18 17:52 ` [PULL 00/19] crypto: Provide clmul.h and host accel Stefan Hajnoczi
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