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target-s390: Implement COMPARE AND BRANCH

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Signed-off-by: Richard Henderson <rth@twiddle.net>
This commit is contained in:
Richard Henderson 2012-08-31 10:53:49 -07:00
parent 7a6c7067f0
commit 5550359f07
2 changed files with 47 additions and 0 deletions
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28
target-s390x/translate.c
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@ -1427,6 +1427,34 @@ static ExitStatus op_bx64(DisasContext *s, DisasOps *o)
return help_branch(s, &c, is_imm, imm, o->in2);
}
static ExitStatus op_cj(DisasContext *s, DisasOps *o)
{
int imm, m3 = get_field(s->fields, m3);
bool is_imm;
DisasCompare c;
/* Bit 3 of the m3 field is reserved and should be zero.
Choose to ignore it wrt the ltgt_cond table above. */
c.cond = ltgt_cond[m3 & 14];
if (s->insn->data) {
c.cond = tcg_unsigned_cond(c.cond);
}
c.is_64 = c.g1 = c.g2 = true;
c.u.s64.a = o->in1;
c.u.s64.b = o->in2;
is_imm = have_field(s->fields, i4);
if (is_imm) {
imm = get_field(s->fields, i4);
} else {
imm = 0;
o->out = get_address(s, 0, get_field(s->fields, b4),
get_field(s->fields, d4));
}
return help_branch(s, &c, is_imm, imm, o->out);
}
static ExitStatus op_ceb(DisasContext *s, DisasOps *o)
{
gen_helper_ceb(cc_op, cpu_env, o->in1, o->in2);