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target/mips: Move MUL opcode check from decode_mxu() to decode_legacy()
Move the check for MUL opcode from decode_opc_mxu() callee to decode_opc_legacy() caller, so we can simplify the ifdef'ry and elide the call in few commits. Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Message-Id: <20210226093111.3865906-9-f4bug@amsat.org>
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@ -25783,19 +25783,6 @@ static void decode_opc_mxu(DisasContext *ctx, uint32_t insn)
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{
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uint32_t opcode = extract32(insn, 0, 6);
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if (MASK_SPECIAL2(insn) == OPC_MUL) {
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uint32_t rs, rt, rd, op1;
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rs = extract32(insn, 21, 5);
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rt = extract32(insn, 16, 5);
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rd = extract32(insn, 11, 5);
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op1 = MASK_SPECIAL2(insn);
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gen_arith(ctx, op1, rd, rs, rt);
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return;
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}
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if (opcode == OPC_MXU_S32M2I) {
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gen_mxu_s32m2i(ctx);
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return;
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@ -26994,7 +26981,11 @@ static bool decode_opc_legacy(CPUMIPSState *env, DisasContext *ctx)
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#endif
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#if !defined(TARGET_MIPS64)
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if (ctx->insn_flags & ASE_MXU) {
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decode_opc_mxu(ctx, ctx->opcode);
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if (MASK_SPECIAL2(ctx->opcode) == OPC_MUL) {
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gen_arith(ctx, OPC_MUL, rd, rs, rt);
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} else {
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decode_opc_mxu(ctx, ctx->opcode);
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}
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break;
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}
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#endif
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