target/mips: Convert Rel6 COP1X opcode to decodetree

COP1x opcode has been removed from the Release 6. Add a single decodetree entry for it, 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: <20201208203704.243704-8-f4bug@amsat.org>
qemu · Jan 7, 2021 · 8d459fe · 8d459fe
1 parent 58d8597
commit 8d459fe
Show file tree

Hide file tree

Showing 2 changed files with 2 additions and 1 deletion.
diff --git a/target/mips/mips32r6.decode b/target/mips/mips32r6.decode
@@ -16,4 +16,6 @@
 
 LSA                 000000 ..... ..... ..... 000 .. 000101  @lsa
 
+REMOVED             010011 ----- ----- ----- ----- ------   # COP1X (COP3)
+
 REMOVED             011100 ----- ----- ----- ----- ------   # SPECIAL2
diff --git a/target/mips/translate.c b/target/mips/translate.c
@@ -28827,7 +28827,6 @@ static bool decode_opc_legacy(CPUMIPSState *env, DisasContext *ctx)
         break;
 
     case OPC_CP3:
-        check_insn_opc_removed(ctx, ISA_MIPS_R6);
         if (ctx->CP0_Config1 & (1 << CP0C1_FP)) {
             check_cp1_enabled(ctx);
             op1 = MASK_CP3(ctx->opcode);