target/arm: Implement MVE VRSHL

Implement the MVE VRSHL insn (vector form).

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20210617121628.20116-36-peter.maydell@linaro.org

target/arm/helper-mve.h

@@ -177,6 +177,14 @@ DEF_HELPER_FLAGS_4(mve_vshlub, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
 DEF_HELPER_FLAGS_4(mve_vshluh, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
 DEF_HELPER_FLAGS_4(mve_vshluw, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
 
+DEF_HELPER_FLAGS_4(mve_vrshlsb, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
+DEF_HELPER_FLAGS_4(mve_vrshlsh, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
+DEF_HELPER_FLAGS_4(mve_vrshlsw, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
+
+DEF_HELPER_FLAGS_4(mve_vrshlub, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
+DEF_HELPER_FLAGS_4(mve_vrshluh, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
+DEF_HELPER_FLAGS_4(mve_vrshluw, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
+
 DEF_HELPER_FLAGS_4(mve_vqshlsb, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
 DEF_HELPER_FLAGS_4(mve_vqshlsh, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
 DEF_HELPER_FLAGS_4(mve_vqshlsw, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)

target/arm/mve.decode

@@ -133,6 +133,9 @@ VQSUB_U          111 1 1111 0 . .. ... 0 ... 0 0010 . 1 . 1 ... 0 @2op
 VSHL_S           111 0 1111 0 . .. ... 0 ... 0 0100 . 1 . 0 ... 0 @2op_rev
 VSHL_U           111 1 1111 0 . .. ... 0 ... 0 0100 . 1 . 0 ... 0 @2op_rev
 
+VRSHL_S          111 0 1111 0 . .. ... 0 ... 0 0101 . 1 . 0 ... 0 @2op_rev
+VRSHL_U          111 1 1111 0 . .. ... 0 ... 0 0101 . 1 . 0 ... 0 @2op_rev
+
 VQSHL_S          111 0 1111 0 . .. ... 0 ... 0 0100 . 1 . 1 ... 0 @2op_rev
 VQSHL_U          111 1 1111 0 . .. ... 0 ... 0 0100 . 1 . 1 ... 0 @2op_rev
 

target/arm/mve_helper.c

@@ -523,9 +523,13 @@ DO_2OP_U(vhsubu, do_vhsub_u)
 
 #define DO_VSHLS(N, M) do_sqrshl_bhs(N, (int8_t)(M), sizeof(N) * 8, false, NULL)
 #define DO_VSHLU(N, M) do_uqrshl_bhs(N, (int8_t)(M), sizeof(N) * 8, false, NULL)
+#define DO_VRSHLS(N, M) do_sqrshl_bhs(N, (int8_t)(M), sizeof(N) * 8, true, NULL)
+#define DO_VRSHLU(N, M) do_uqrshl_bhs(N, (int8_t)(M), sizeof(N) * 8, true, NULL)
 
 DO_2OP_S(vshls, DO_VSHLS)
 DO_2OP_U(vshlu, DO_VSHLU)
+DO_2OP_S(vrshls, DO_VRSHLS)
+DO_2OP_U(vrshlu, DO_VRSHLU)
 
 static inline int32_t do_sat_bhw(int64_t val, int64_t min, int64_t max, bool *s)
 {

target/arm/translate-mve.c

@@ -404,6 +404,8 @@ DO_2OP(VQSUB_S, vqsubs)
 DO_2OP(VQSUB_U, vqsubu)
 DO_2OP(VSHL_S, vshls)
 DO_2OP(VSHL_U, vshlu)
+DO_2OP(VRSHL_S, vrshls)
+DO_2OP(VRSHL_U, vrshlu)
 DO_2OP(VQSHL_S, vqshls)
 DO_2OP(VQSHL_U, vqshlu)
 DO_2OP(VQRSHL_S, vqrshls)