[PULL 62/66] target/mips: Convert Rel6 LWLE/LWRE/SWLE/SWRE opcodes to decodetree

[Philippe Mathieu-Daudé]

LWLE/LWRE/SWLE/SWRE (EVA) opcodes have been removed from
the Release 6. Add a single decodetree entry for the opcodes,
triggering Reserved Instruction if ever used.

Remove unreachable check_insn_opc_removed() calls.

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20201208203704.243704-11-f4bug@amsat.org>
---
 target/mips/mips32r6.decode | 5 +++++
 target/mips/translate.c     | 4 ----
 2 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/target/mips/mips32r6.decode b/target/mips/mips32r6.decode
index 89a0085fafd..3ec50704cf2 100644
--- a/target/mips/mips32r6.decode
+++ b/target/mips/mips32r6.decode
@@ -20,6 +20,11 @@ REMOVED             010011 ----- ----- ----- ----- ------   
# COP1X (COP3)
 
 REMOVED             011100 ----- ----- ----- ----- ------   # SPECIAL2
 
+REMOVED             011111 ----- ----- ----------  011001   # LWLE
+REMOVED             011111 ----- ----- ----------  011010   # LWRE
+REMOVED             011111 ----- ----- ----------  100001   # SWLE
+REMOVED             011111 ----- ----- ----------  100010   # SWRE
+
 REMOVED             100010 ----- ----- ----------------     # LWL
 REMOVED             100110 ----- ----- ----------------     # LWR
 REMOVED             101010 ----- ----- ----------------     # SWL
diff --git a/target/mips/translate.c b/target/mips/translate.c
index 0d729293f6b..73efbd24585 100644
--- a/target/mips/translate.c
+++ b/target/mips/translate.c
@@ -28122,8 +28122,6 @@ static void decode_opc_special3(CPUMIPSState *env, 
DisasContext *ctx)
         switch (op1) {
         case OPC_LWLE:
         case OPC_LWRE:
-            check_insn_opc_removed(ctx, ISA_MIPS_R6);
-            /* fall through */
         case OPC_LBUE:
         case OPC_LHUE:
         case OPC_LBE:
@@ -28135,8 +28133,6 @@ static void decode_opc_special3(CPUMIPSState *env, 
DisasContext *ctx)
             return;
         case OPC_SWLE:
         case OPC_SWRE:
-            check_insn_opc_removed(ctx, ISA_MIPS_R6);
-            /* fall through */
         case OPC_SBE:
         case OPC_SHE:
         case OPC_SWE:
-- 
2.26.2