target/arm: Implement SVE2 scatter store insns

Add decoding logic for SVE2 64-bit/32-bit scatter non-temporal
store insns.

64-bit
* STNT1B (vector plus scalar)
* STNT1H (vector plus scalar)
* STNT1W (vector plus scalar)
* STNT1D (vector plus scalar)

32-bit
* STNT1B (vector plus scalar)
* STNT1H (vector plus scalar)
* STNT1W (vector plus scalar)

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Stephen Long <steplong@quicinc.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20210525010358.152808-45-richard.henderson@linaro.org
Message-Id: <20200422141553.8037-1-steplong@quicinc.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

diff --git a/target/arm/sve.decode b/target/arm/sve.decode
index 7645587469c4690ae19fea01be5fdd00af3da01e..5cfe6df0d2401e86b2a555931241db3246859abb 100644 (file)
--- a/target/arm/sve.decode
+++ b/target/arm/sve.decode
@@ -1388,3 +1388,13 @@ UMLSLT_zzzw     01000100 .. 0 ..... 010 111 ..... .....  @rda_rn_rm
 
 CMLA_zzzz       01000100 esz:2 0 rm:5 0010 rot:2 rn:5 rd:5  ra=%reg_movprfx
 SQRDCMLAH_zzzz  01000100 esz:2 0 rm:5 0011 rot:2 rn:5 rd:5  ra=%reg_movprfx
+
+### SVE2 Memory Store Group
+
+# SVE2 64-bit scatter non-temporal store (vector plus scalar)
+STNT1_zprz      1110010 .. 00 ..... 001 ... ..... ..... \
+                @rprr_scatter_store xs=2 esz=3 scale=0
+
+# SVE2 32-bit scatter non-temporal store (vector plus scalar)
+STNT1_zprz      1110010 .. 10 ..... 001 ... ..... ..... \
+                @rprr_scatter_store xs=0 esz=2 scale=0

diff --git a/target/arm/translate-sve.c b/target/arm/translate-sve.c
index ba39ff84a5449c12dadb0030e7fe3767a45b5b20..ac43bb02be31575badcd9a4d88489dec51746b17 100644 (file)
--- a/target/arm/translate-sve.c
+++ b/target/arm/translate-sve.c
@@ -6167,6 +6167,14 @@ static bool trans_ST1_zpiz(DisasContext *s, arg_ST1_zpiz *a)
     return true;
 }
 
+static bool trans_STNT1_zprz(DisasContext *s, arg_ST1_zprz *a)
+{
+    if (!dc_isar_feature(aa64_sve2, s)) {
+        return false;
+    }
+    return trans_ST1_zprz(s, a);
+}
+
 /*
  * Prefetches
  */