From patchwork Fri Sep 28 01:03:32 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Subject: [127/147] target-s390: Implement LOAD ON CONDITION Date: Thu, 27 Sep 2012 15:03:32 -0000 From: Richard Henderson X-Patchwork-Id: 187666 Message-Id: <1348794212-28195-1-git-send-email-rth@twiddle.net> To: qemu-devel@nongnu.org Cc: Alexander Graf Signed-off-by: Richard Henderson --- target-s390x/insn-data.def | 5 +++++ target-s390x/translate.c | 30 ++++++++++++++++++++++++++++++ 2 files changed, 35 insertions(+) diff --git a/target-s390x/insn-data.def b/target-s390x/insn-data.def index b739d70..91ee055 100644 --- a/target-s390x/insn-data.def +++ b/target-s390x/insn-data.def @@ -390,6 +390,11 @@ C(0xb301, LNEBR, RRE, Z, 0, e2, new, e1, nabsf32, f32) C(0xb311, LNDBR, RRE, Z, 0, f2_o, f1, 0, nabsf64, f64) C(0xb341, LNXBR, RRE, Z, 0, x2_o, x1, 0, nabsf128, f128) +/* LOAD ON CONDITION */ + C(0xb9f2, LOCR, RRF_c, LOC, r1, r2, new, r1_32, loc, 0) + C(0xb9e2, LOCGR, RRF_c, LOC, r1, r2, r1, 0, loc, 0) + C(0xebf2, LOC, RSY_b, LOC, r1, m2_32u, new, r1_32, loc, 0) + C(0xebe2, LOCG, RSY_b, LOC, r1, m2_64, r1, 0, loc, 0) /* LOAD POSITIVE */ C(0x1000, LPR, RR_a, Z, 0, r2_32s, new, r1_32, abs, abs32) C(0xb900, LPGR, RRE, Z, 0, r2, r1, 0, abs, abs64) diff --git a/target-s390x/translate.c b/target-s390x/translate.c index 0c9df96..130b88e 100644 --- a/target-s390x/translate.c +++ b/target-s390x/translate.c @@ -2045,6 +2045,36 @@ static ExitStatus op_ld64(DisasContext *s, DisasOps *o) return NO_EXIT; } +static ExitStatus op_loc(DisasContext *s, DisasOps *o) +{ + DisasCompare c; + + disas_jcc(s, &c, get_field(s->fields, m3)); + + if (c.is_64) { + tcg_gen_movcond_i64(c.cond, o->out, c.u.s64.a, c.u.s64.b, + o->in2, o->in1); + free_compare(&c); + } else { + TCGv_i32 t32 = tcg_temp_new_i32(); + TCGv_i64 t, z; + + tcg_gen_setcond_i32(c.cond, t32, c.u.s32.a, c.u.s32.b); + free_compare(&c); + + t = tcg_temp_new_i64(); + tcg_gen_extu_i32_i64(t, t32); + tcg_temp_free_i32(t32); + + z = tcg_const_i64(0); + tcg_gen_movcond_i64(TCG_COND_NE, o->out, t, z, o->in2, o->in1); + tcg_temp_free_i64(t); + tcg_temp_free_i64(z); + } + + return NO_EXIT; +} + #ifndef CONFIG_USER_ONLY static ExitStatus op_lctl(DisasContext *s, DisasOps *o) {