target/arm: Implement SME2 BMOPA

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20250704142112.1018902-28-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

diff --git a/target/arm/tcg/helper-sme.h b/target/arm/tcg/helper-sme.h
index 8246ce774cab760409870587958e46dd52e1ffcd..17d1a7c10292a1909f569cdfbcec6910fcbcaad8 100644 (file)
--- a/target/arm/tcg/helper-sme.h
+++ b/target/arm/tcg/helper-sme.h
@@ -153,3 +153,6 @@ DEF_HELPER_FLAGS_6(sme_sumopa_d, TCG_CALL_NO_RWG,
                    void, ptr, ptr, ptr, ptr, ptr, i32)
 DEF_HELPER_FLAGS_6(sme_usmopa_d, TCG_CALL_NO_RWG,
                    void, ptr, ptr, ptr, ptr, ptr, i32)
+
+DEF_HELPER_FLAGS_6(sme2_bmopa_s, TCG_CALL_NO_RWG,
+                   void, ptr, ptr, ptr, ptr, ptr, i32)

diff --git a/target/arm/tcg/sme.decode b/target/arm/tcg/sme.decode
index 37bd0c6198d7e9aaa019a79a18d157546eaf244e..de8d04cb878b063e25c021329c1a03354a74a651 100644 (file)
--- a/target/arm/tcg/sme.decode
+++ b/target/arm/tcg/sme.decode
@@ -165,3 +165,5 @@ SMOPA_d         1010000 0 11 0 ..... ... ... ..... . 0 ...      @op_64
 SUMOPA_d        1010000 0 11 1 ..... ... ... ..... . 0 ...      @op_64
 USMOPA_d        1010000 1 11 0 ..... ... ... ..... . 0 ...      @op_64
 UMOPA_d         1010000 1 11 1 ..... ... ... ..... . 0 ...      @op_64
+
+BMOPA           1000000 0 10 0 ..... ... ... ..... . 10 ..      @op_32

diff --git a/target/arm/tcg/sme_helper.c b/target/arm/tcg/sme_helper.c
index baeaa3e069057aa8a01b92f701178dc202860bb8..6122a5b5d9e10122e5b5097dc6760073b350f56d 100644 (file)
--- a/target/arm/tcg/sme_helper.c
+++ b/target/arm/tcg/sme_helper.c
@@ -1297,17 +1297,31 @@ DEF_IMOP_64(umopa_d, uint16_t, uint16_t)
 DEF_IMOP_64(sumopa_d, int16_t, uint16_t)
 DEF_IMOP_64(usmopa_d, uint16_t, int16_t)
 
-#define DEF_IMOPH(NAME, S) \
-    void HELPER(sme_##NAME##_##S)(void *vza, void *vzn, void *vzm,          \
+#define DEF_IMOPH(P, NAME, S) \
+    void HELPER(P##_##NAME##_##S)(void *vza, void *vzn, void *vzm,          \
                                   void *vpn, void *vpm, uint32_t desc)      \
     { do_imopa_##S(vza, vzn, vzm, vpn, vpm, desc, NAME##_##S); }
 
-DEF_IMOPH(smopa, s)
-DEF_IMOPH(umopa, s)
-DEF_IMOPH(sumopa, s)
-DEF_IMOPH(usmopa, s)
+DEF_IMOPH(sme, smopa, s)
+DEF_IMOPH(sme, umopa, s)
+DEF_IMOPH(sme, sumopa, s)
+DEF_IMOPH(sme, usmopa, s)
 
-DEF_IMOPH(smopa, d)
-DEF_IMOPH(umopa, d)
-DEF_IMOPH(sumopa, d)
-DEF_IMOPH(usmopa, d)
+DEF_IMOPH(sme, smopa, d)
+DEF_IMOPH(sme, umopa, d)
+DEF_IMOPH(sme, sumopa, d)
+DEF_IMOPH(sme, usmopa, d)
+
+static uint32_t bmopa_s(uint32_t n, uint32_t m, uint32_t a, uint8_t p, bool neg)
+{
+    uint32_t sum = ctpop32(~(n ^ m));
+    if (neg) {
+        sum = -sum;
+    }
+    if (!(p & 1)) {
+        sum = 0;
+    }
+    return a + sum;
+}
+
+DEF_IMOPH(sme2, bmopa, s)

diff --git a/target/arm/tcg/translate-sme.c b/target/arm/tcg/translate-sme.c
index 7b275dd2b84ec4865cb6a689636ddc75ddb64c41..c2615f06aee6e12095ed8d46bac213cdda5954a3 100644 (file)
--- a/target/arm/tcg/translate-sme.c
+++ b/target/arm/tcg/translate-sme.c
@@ -539,3 +539,5 @@ TRANS_FEAT(SMOPA_d, aa64_sme_i16i64, do_outprod, a, MO_64, gen_helper_sme_smopa_
 TRANS_FEAT(UMOPA_d, aa64_sme_i16i64, do_outprod, a, MO_64, gen_helper_sme_umopa_d)
 TRANS_FEAT(SUMOPA_d, aa64_sme_i16i64, do_outprod, a, MO_64, gen_helper_sme_sumopa_d)
 TRANS_FEAT(USMOPA_d, aa64_sme_i16i64, do_outprod, a, MO_64, gen_helper_sme_usmopa_d)
+
+TRANS_FEAT(BMOPA, aa64_sme2, do_outprod, a, MO_32, gen_helper_sme2_bmopa_s)