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| author | Philippe Mathieu-Daudé <f4bug@amsat.org> | 2020-11-26 11:55:46 +0100 |
|---|---|---|
| committer | Philippe Mathieu-Daudé <f4bug@amsat.org> | 2021-01-14 17:13:53 +0100 |
| commit | 6513ca15d8f4034bbc1b68a2cae4f54858fab61e (patch) | |
| tree | 081960c630375217527ae8154ca49a5e9ef04fde | |
| parent | ddc7ef8dfe2408912832ddaac2a21ede4300ce22 (diff) | |
| download | qemu-6513ca15d8f4034bbc1b68a2cae4f54858fab61e.zip qemu-6513ca15d8f4034bbc1b68a2cae4f54858fab61e.tar.gz qemu-6513ca15d8f4034bbc1b68a2cae4f54858fab61e.tar.bz2 | |
target/mips: Convert Rel6 CACHE/PREF opcodes to decodetree
CACHE/PREF 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: <20201208203704.243704-9-f4bug@amsat.org>
| -rw-r--r-- | target/mips/mips32r6.decode | 3 | ||||
| -rw-r--r-- | target/mips/translate.c | 2 |
2 files changed, 3 insertions, 2 deletions
diff --git a/target/mips/mips32r6.decode b/target/mips/mips32r6.decode index aea6f11..543e0c7 100644 --- a/target/mips/mips32r6.decode +++ b/target/mips/mips32r6.decode @@ -19,3 +19,6 @@ LSA 000000 ..... ..... ..... 000 .. 000101 @lsa REMOVED 010011 ----- ----- ----- ----- ------ # COP1X (COP3) REMOVED 011100 ----- ----- ----- ----- ------ # SPECIAL2 + +REMOVED 101111 ----- ----- ---------------- # CACHE +REMOVED 110011 ----- ----- ---------------- # PREF diff --git a/target/mips/translate.c b/target/mips/translate.c index f3ebac9..381571e 100644 --- a/target/mips/translate.c +++ b/target/mips/translate.c @@ -28619,7 +28619,6 @@ static bool decode_opc_legacy(CPUMIPSState *env, DisasContext *ctx) gen_st_cond(ctx, rt, rs, imm, MO_TESL, false); break; case OPC_CACHE: - check_insn_opc_removed(ctx, ISA_MIPS_R6); check_cp0_enabled(ctx); check_insn(ctx, ISA_MIPS3 | ISA_MIPS_R1); if (ctx->hflags & MIPS_HFLAG_ITC_CACHE) { @@ -28628,7 +28627,6 @@ static bool decode_opc_legacy(CPUMIPSState *env, DisasContext *ctx) /* Treat as NOP. */ break; case OPC_PREF: - check_insn_opc_removed(ctx, ISA_MIPS_R6); if (ctx->insn_flags & INSN_R5900) { /* Treat as NOP. */ } else { |