Commit 538fad59 authored by Aurelien Jarno's avatar Aurelien Jarno Committed by Richard Henderson
Browse files

target/s390x: implement serialization in BRANCH CONDITION 



Signed-off-by: default avatarAurelien Jarno <aurelien@aurel32.net>
Message-Id: <20170509082800.10756-4-aurelien@aurel32.net>
Signed-off-by: default avatarRichard Henderson <rth@twiddle.net>
parent 1e8e69f0

target/s390x/translate.c

+15 −0
Original line number Diff line number Diff line
@@ -1518,6 +1518,21 @@ static ExitStatus op_bc(DisasContext *s, DisasOps *o) 
    int imm = is_imm ? get_field(s->fields, i2) : 0;

    DisasCompare c;



    /* BCR with R2 = 0 causes no branching */

    if (have_field(s->fields, r2) && get_field(s->fields, r2) == 0) {

        if (m1 == 14) {

            /* Perform serialization */

            /* FIXME: check for fast-BCR-serialization facility */

            tcg_gen_mb(TCG_MO_ALL | TCG_BAR_SC);

        }

        if (m1 == 15) {

            /* Perform serialization */

            /* FIXME: perform checkpoint-synchronisation */

            tcg_gen_mb(TCG_MO_ALL | TCG_BAR_SC);

        }

        return NO_EXIT;

    }



    disas_jcc(s, &c, m1);

    return help_branch(s, &c, is_imm, imm, o->in2);

}