target/mips: Convert Rel6 LLD/SCD opcodes to decodetree
LLD/SCD 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: <20201208203704.243704-13-f4bug@amsat.org>
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@ -22,3 +22,6 @@ REMOVED 011010 ----- ----- ---------------- # LDL
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REMOVED 011011 ----- ----- ---------------- # LDR
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REMOVED 011011 ----- ----- ---------------- # LDR
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REMOVED 101100 ----- ----- ---------------- # SDL
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REMOVED 101100 ----- ----- ---------------- # SDL
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REMOVED 101101 ----- ----- ---------------- # SDR
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REMOVED 101101 ----- ----- ---------------- # SDR
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REMOVED 110100 ----- ----- ---------------- # LLD
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REMOVED 111100 ----- ----- ---------------- # SCD
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@ -28870,7 +28870,6 @@ static bool decode_opc_legacy(CPUMIPSState *env, DisasContext *ctx)
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if (ctx->insn_flags & INSN_R5900) {
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if (ctx->insn_flags & INSN_R5900) {
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check_insn_opc_user_only(ctx, INSN_R5900);
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check_insn_opc_user_only(ctx, INSN_R5900);
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}
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}
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check_insn_opc_removed(ctx, ISA_MIPS_R6);
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/* fall through */
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/* fall through */
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case OPC_LDL:
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case OPC_LDL:
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case OPC_LDR:
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case OPC_LDR:
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@ -28888,7 +28887,6 @@ static bool decode_opc_legacy(CPUMIPSState *env, DisasContext *ctx)
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gen_st(ctx, op, rt, rs, imm);
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gen_st(ctx, op, rt, rs, imm);
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break;
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break;
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case OPC_SCD:
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case OPC_SCD:
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check_insn_opc_removed(ctx, ISA_MIPS_R6);
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check_insn(ctx, ISA_MIPS3);
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check_insn(ctx, ISA_MIPS3);
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if (ctx->insn_flags & INSN_R5900) {
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if (ctx->insn_flags & INSN_R5900) {
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check_insn_opc_user_only(ctx, INSN_R5900);
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check_insn_opc_user_only(ctx, INSN_R5900);
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