diff mbox series

[PULL,63/66] target/mips: Convert Rel6 LDL/LDR/SDL/SDR opcodes to decodetree

Message ID 20210107222253.20382-64-f4bug@amsat.org (mailing list archive)
State New, archived
Headers show
Series [PULL,01/66] target/mips: Add CP0 Config0 register definitions for MIPS3 ISA | expand

Commit Message

Philippe Mathieu-Daudé Jan. 7, 2021, 10:22 p.m. UTC 
LDL/LDR/SDL/SDR 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: <20201208203704.243704-12-f4bug@amsat.org>
---
 target/mips/mips64r6.decode | 6 ++++++
 target/mips/translate.c     | 5 +----
 2 files changed, 7 insertions(+), 4 deletions(-)
diff mbox series

Patch

diff --git a/target/mips/mips64r6.decode b/target/mips/mips64r6.decode
index e812224341e..8c3fc5dae9c 100644
--- a/target/mips/mips64r6.decode
+++ b/target/mips/mips64r6.decode
@@ -10,8 +10,14 @@ 
 #       (Document Number: MD00087-2B-MIPS64BIS-AFP-6.06)
 #
 
+&REMOVED            !extern
 &lsa                rd rt rs sa !extern
 
 @lsa                ...... rs:5 rt:5 rd:5 ... sa:2 ......   &lsa
 
 DLSA                000000 ..... ..... ..... 000 .. 010101  @lsa
+
+REMOVED             011010 ----- ----- ----------------     # LDL
+REMOVED             011011 ----- ----- ----------------     # LDR
+REMOVED             101100 ----- ----- ----------------     # SDL
+REMOVED             101101 ----- ----- ----------------     # SDR
diff --git a/target/mips/translate.c b/target/mips/translate.c
index 73efbd24585..f46d7c5f80b 100644
--- a/target/mips/translate.c
+++ b/target/mips/translate.c
@@ -28871,11 +28871,10 @@  static bool decode_opc_legacy(CPUMIPSState *env, DisasContext *ctx)
         if (ctx->insn_flags & INSN_R5900) {
             check_insn_opc_user_only(ctx, INSN_R5900);
         }
+        check_insn_opc_removed(ctx, ISA_MIPS_R6);
         /* fall through */
     case OPC_LDL:
     case OPC_LDR:
-        check_insn_opc_removed(ctx, ISA_MIPS_R6);
-        /* fall through */
     case OPC_LWU:
     case OPC_LD:
         check_insn(ctx, ISA_MIPS3);
@@ -28884,8 +28883,6 @@  static bool decode_opc_legacy(CPUMIPSState *env, DisasContext *ctx)
         break;
     case OPC_SDL:
     case OPC_SDR:
-        check_insn_opc_removed(ctx, ISA_MIPS_R6);
-        /* fall through */
     case OPC_SD:
         check_insn(ctx, ISA_MIPS3);
         check_mips_64(ctx);