From: Richard Henderson <richard.henderson@linaro.org>
Date: Tue, 11 Jul 2023 08:38:28 +0000 (+0100)
Subject: target/ppc: Use clmul_16* routines
X-Git-Tag: v8.2.0-rc0~125^2~11
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=a2c67342eed42f181aa123803bc246b8fad7d1d9;p=thirdparty%2Fqemu.git

target/ppc: Use clmul_16* routines

Use generic routines for 16-bit carry-less multiply.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---

diff --git a/target/ppc/int_helper.c b/target/ppc/int_helper.c
index f45b24d3218..ebb2957fe75 100644
--- a/target/ppc/int_helper.c
+++ b/target/ppc/int_helper.c
@@ -1437,6 +1437,14 @@ void helper_vpmsumb(ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b)
     }
 }
 
+void helper_vpmsumh(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_16x2_even(aa, bb) ^ clmul_16x2_odd(aa, bb);
+    }
+}
+
 #define PMSUM(name, srcfld, trgfld, trgtyp)                   \
 void helper_##name(ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b)  \
 {                                                             \
@@ -1457,7 +1465,6 @@ void helper_##name(ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b)  \
     }                                                         \
 }
 
-PMSUM(vpmsumh, u16, u32, uint32_t)
 PMSUM(vpmsumw, u32, u64, uint64_t)
 
 void helper_VPMSUMD(ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b)