target/mips: Introduce decodetree helpers for MSA LSA/DLSA opcodes

Add the LSA opcode to the MSA32 decodetree config, add DLSA
to a new config for the MSA64 ASE, and call decode_msa64()
in the main decode_opc() loop.

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20201215225757.764263-23-f4bug@amsat.org>

1 files changed, 14 insertions, 0 deletions

diff --git a/target/mips/msa_translate.c b/target/mips/msa_translate.c
index 8a48f889aa..ae6587edf6 100644
--- a/target/mips/msa_translate.c
+++ b/target/mips/msa_translate.c
@@ -19,6 +19,7 @@
 
 /* Include the auto-generated decoder.  */
 #include "decode-msa32.c.inc"
+#include "decode-msa64.c.inc"
 
 #define OPC_MSA (0x1E << 26)
 
@@ -2266,7 +2267,20 @@ static bool trans_MSA(DisasContext *ctx, arg_MSA *a)
     return true;
 }
 
+static bool trans_LSA(DisasContext *ctx, arg_rtype *a)
+{
+    return gen_lsa(ctx, a->rd, a->rt, a->rs, a->sa);
+}
+
+static bool trans_DLSA(DisasContext *ctx, arg_rtype *a)
+{
+    return gen_dlsa(ctx, a->rd, a->rt, a->rs, a->sa);
+}
+
 bool decode_ase_msa(DisasContext *ctx, uint32_t insn)
 {
+    if (TARGET_LONG_BITS == 64 && decode_msa64(ctx, insn)) {
+        return true;
+    }
     return decode_msa32(ctx, insn);
 }