target-xtensa: implement RT0 group
NEG and ABS are the only members of RT0 group. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
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@ -255,6 +255,25 @@ static void disas_xtensa_insn(DisasContext *dc)
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break;
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case 6: /*RT0*/
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switch (RRR_S) {
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case 0: /*NEG*/
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tcg_gen_neg_i32(cpu_R[RRR_R], cpu_R[RRR_T]);
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break;
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case 1: /*ABS*/
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{
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int label = gen_new_label();
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tcg_gen_mov_i32(cpu_R[RRR_R], cpu_R[RRR_T]);
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tcg_gen_brcondi_i32(
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TCG_COND_GE, cpu_R[RRR_R], 0, label);
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tcg_gen_neg_i32(cpu_R[RRR_R], cpu_R[RRR_T]);
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gen_set_label(label);
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}
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break;
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default: /*reserved*/
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break;
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}
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break;
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case 7: /*reserved*/
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