target/mips: Convert Rel6 Special2 opcode to decodetree

Special2 opcode have been removed from the Release 6.

Add a single decodetree entry for all the opcode class,
triggering Reserved Instruction if ever used.

Remove unreachable check_insn_opc_removed() call.

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20201208203704.243704-7-f4bug@amsat.org>

1 files changed, 7 insertions, 0 deletions

diff --git a/target/mips/rel6_translate.c b/target/mips/rel6_translate.c
index da70ff9..139a752 100644
--- a/target/mips/rel6_translate.c
+++ b/target/mips/rel6_translate.c
@@ -18,6 +18,13 @@
 #include "decode-mips32r6.c.inc"
 #include "decode-mips64r6.c.inc"
 
+bool trans_REMOVED(DisasContext *ctx, arg_REMOVED *a)
+{
+    gen_reserved_instruction(ctx);
+
+    return true;
+}
+
 static bool trans_LSA(DisasContext *ctx, arg_rtype *a)
 {
     return gen_lsa(ctx, a->rd, a->rt, a->rs, a->sa);