target-m68k: manage pre-dec et post-inc in CAS
In these cases we must update the address register after the operation. Signed-off-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Richard Henderson <rth@twiddle.net> Message-Id: <1484332593-16782-4-git-send-email-laurent@vivier.eu>
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@ -1963,6 +1963,15 @@ DISAS_INSN(cas)
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gen_partset_reg(opsize, DREG(ext, 0), load);
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tcg_temp_free(load);
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switch (extract32(insn, 3, 3)) {
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case 3: /* Indirect postincrement. */
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tcg_gen_addi_i32(AREG(insn, 0), addr, opsize_bytes(opsize));
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break;
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case 4: /* Indirect predecrememnt. */
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tcg_gen_mov_i32(AREG(insn, 0), addr);
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break;
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}
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}
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DISAS_INSN(cas2w)
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