target/arm: Implement MVE VQRSHL

Implement the MV VQRSHL (vector) insn.  Again, the code to perform
the actual shifts is borrowed from neon_helper.c.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20210617121628.20116-34-peter.maydell@linaro.org

diff --git a/target/arm/helper-mve.h b/target/arm/helper-mve.h
index 1c5626bb72693d1b72b4d19565f092976e7b6340..42be99ad526299464e8a9725abe9a5821c832d6c 100644 (file)
--- a/target/arm/helper-mve.h
+++ b/target/arm/helper-mve.h
@@ -177,6 +177,14 @@ DEF_HELPER_FLAGS_4(mve_vqshlub, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
 DEF_HELPER_FLAGS_4(mve_vqshluh, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
 DEF_HELPER_FLAGS_4(mve_vqshluw, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
 
+DEF_HELPER_FLAGS_4(mve_vqrshlsb, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
+DEF_HELPER_FLAGS_4(mve_vqrshlsh, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
+DEF_HELPER_FLAGS_4(mve_vqrshlsw, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
+
+DEF_HELPER_FLAGS_4(mve_vqrshlub, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
+DEF_HELPER_FLAGS_4(mve_vqrshluh, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
+DEF_HELPER_FLAGS_4(mve_vqrshluw, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
+
 DEF_HELPER_FLAGS_4(mve_vadd_scalarb, TCG_CALL_NO_WG, void, env, ptr, ptr, i32)
 DEF_HELPER_FLAGS_4(mve_vadd_scalarh, TCG_CALL_NO_WG, void, env, ptr, ptr, i32)
 DEF_HELPER_FLAGS_4(mve_vadd_scalarw, TCG_CALL_NO_WG, void, env, ptr, ptr, i32)

diff --git a/target/arm/mve.decode b/target/arm/mve.decode
index 2c37e265765cd1aabd68d54324c6ab88e28c754c..e78eab6d65966ee18a6560af47f9c853b40191a7 100644 (file)
--- a/target/arm/mve.decode
+++ b/target/arm/mve.decode
@@ -133,6 +133,9 @@ VQSUB_U          111 1 1111 0 . .. ... 0 ... 0 0010 . 1 . 1 ... 0 @2op
 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
 
+VQRSHL_S         111 0 1111 0 . .. ... 0 ... 0 0101 . 1 . 1 ... 0 @2op_rev
+VQRSHL_U         111 1 1111 0 . .. ... 0 ... 0 0101 . 1 . 1 ... 0 @2op_rev
+
 # Vector miscellaneous
 
 VCLS             1111 1111 1 . 11 .. 00 ... 0 0100 01 . 0 ... 0 @1op

diff --git a/target/arm/mve_helper.c b/target/arm/mve_helper.c
index d9f5fe13b1fd5f7fb99764a2b7d9843aba29cdfc..64cb5b0c8460a20917d99f195424ef526ce02672 100644 (file)
--- a/target/arm/mve_helper.c
+++ b/target/arm/mve_helper.c
@@ -607,9 +607,15 @@ DO_2OP_SAT(vqsubsw, 4, int32_t, DO_SQSUB_W)
     WRAP_QRSHL_HELPER(do_sqrshl_bhs, N, M, false, satp)
 #define DO_UQSHL_OP(N, M, satp) \
     WRAP_QRSHL_HELPER(do_uqrshl_bhs, N, M, false, satp)
+#define DO_SQRSHL_OP(N, M, satp) \
+    WRAP_QRSHL_HELPER(do_sqrshl_bhs, N, M, true, satp)
+#define DO_UQRSHL_OP(N, M, satp) \
+    WRAP_QRSHL_HELPER(do_uqrshl_bhs, N, M, true, satp)
 
 DO_2OP_SAT_S(vqshls, DO_SQSHL_OP)
 DO_2OP_SAT_U(vqshlu, DO_UQSHL_OP)
+DO_2OP_SAT_S(vqrshls, DO_SQRSHL_OP)
+DO_2OP_SAT_U(vqrshlu, DO_UQRSHL_OP)
 
 #define DO_2OP_SCALAR(OP, ESIZE, TYPE, FN)                              \
     void HELPER(glue(mve_, OP))(CPUARMState *env, void *vd, void *vn,   \

diff --git a/target/arm/translate-mve.c b/target/arm/translate-mve.c
index 52fef6cd89237e2110af6e6e6e13acd4f821507b..bd4c6150cade1ab7dd8668a139589c4135b0b66b 100644 (file)
--- a/target/arm/translate-mve.c
+++ b/target/arm/translate-mve.c
@@ -404,6 +404,8 @@ DO_2OP(VQSUB_S, vqsubs)
 DO_2OP(VQSUB_U, vqsubu)
 DO_2OP(VQSHL_S, vqshls)
 DO_2OP(VQSHL_U, vqshlu)
+DO_2OP(VQRSHL_S, vqrshls)
+DO_2OP(VQRSHL_U, vqrshlu)
 
 static bool do_2op_scalar(DisasContext *s, arg_2scalar *a,
                           MVEGenTwoOpScalarFn fn)