target/arm: Implement MVE VMLALDAV

Implement the MVE VMLALDAV insn, which multiplies pairs of integer
elements, accumulating them into a 64-bit result in a pair of
general-purpose registers.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20210617121628.20116-20-peter.maydell@linaro.org

1 files changed, 10 insertions, 0 deletions

diff --git a/target/arm/translate.h b/target/arm/translate.h
index 2821b325e3..99c917c571 100644
--- a/target/arm/translate.h
+++ b/target/arm/translate.h
@@ -136,6 +136,11 @@ static inline int negate(DisasContext *s, int x)
     return -x;
 }
 
+static inline int plus_1(DisasContext *s, int x)
+{
+    return x + 1;
+}
+
 static inline int plus_2(DisasContext *s, int x)
 {
     return x + 2;
@@ -151,6 +156,11 @@ static inline int times_4(DisasContext *s, int x)
     return x * 4;
 }
 
+static inline int times_2_plus_1(DisasContext *s, int x)
+{
+    return x * 2 + 1;
+}
+
 static inline int arm_dc_feature(DisasContext *dc, int feature)
 {
     return (dc->features & (1ULL << feature)) != 0;