target/s390x: implement serialization in BRANCH CONDITION
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> Message-Id: <20170509082800.10756-4-aurelien@aurel32.net> Signed-off-by: Richard Henderson <rth@twiddle.net>
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@ -1518,6 +1518,21 @@ static ExitStatus op_bc(DisasContext *s, DisasOps *o)
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int imm = is_imm ? get_field(s->fields, i2) : 0;
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int imm = is_imm ? get_field(s->fields, i2) : 0;
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DisasCompare c;
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DisasCompare c;
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/* BCR with R2 = 0 causes no branching */
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if (have_field(s->fields, r2) && get_field(s->fields, r2) == 0) {
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if (m1 == 14) {
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/* Perform serialization */
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/* FIXME: check for fast-BCR-serialization facility */
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tcg_gen_mb(TCG_MO_ALL | TCG_BAR_SC);
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}
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if (m1 == 15) {
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/* Perform serialization */
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/* FIXME: perform checkpoint-synchronisation */
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tcg_gen_mb(TCG_MO_ALL | TCG_BAR_SC);
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}
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return NO_EXIT;
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}
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disas_jcc(s, &c, m1);
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disas_jcc(s, &c, m1);
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return help_branch(s, &c, is_imm, imm, o->in2);
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return help_branch(s, &c, is_imm, imm, o->in2);
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}
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}
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