[Qemu-devel] [PATCH v5 03/14] target/mips: Add and integrate MXU decoding engine placeholder

[Aleksandar Markovic]

From: Aleksandar Markovic <address@hidden>

Provide the placeholder and add the invocation logic for MXU
decoding engine.

Signed-off-by: Aleksandar Markovic <address@hidden>
---
 target/mips/translate.c | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/target/mips/translate.c b/target/mips/translate.c
index ef7ad62..dc72f76 100644
--- a/target/mips/translate.c
+++ b/target/mips/translate.c
@@ -23311,6 +23311,12 @@ static void decode_opc_special(CPUMIPSState *env, 
DisasContext *ctx)
     }
 }
 
+static void decode_opc_mxu(CPUMIPSState *env, DisasContext *ctx)
+{
+    MIPS_INVAL("decode_opc_mxu");
+    generate_exception_end(ctx, EXCP_RI);
+}
+
 static void decode_opc_special2_legacy(CPUMIPSState *env, DisasContext *ctx)
 {
     int rs, rt, rd;
@@ -25292,7 +25298,11 @@ static void decode_opc(CPUMIPSState *env, DisasContext 
*ctx)
         decode_opc_special(env, ctx);
         break;
     case OPC_SPECIAL2:
-        decode_opc_special2_legacy(env, ctx);
+        if (ctx->insn_flags & ASE_MXU) {
+            decode_opc_mxu(env, ctx);
+        } else {
+            decode_opc_special2_legacy(env, ctx);
+        }
         break;
     case OPC_SPECIAL3:
         decode_opc_special3(env, ctx);
-- 
2.7.4