diff options
| author | Richard Henderson <rth@twiddle.net> | 2012-09-05 10:55:00 -0700 |
|---|---|---|
| committer | Richard Henderson <rth@twiddle.net> | 2013-01-05 12:18:44 -0800 |
| commit | 632086da28e1682c0129276656ee0d32274fcd17 (patch) | |
| tree | 7926f1d106e32911eedd993f94fc646349d5f780 | |
| parent | 1c2687518235aa38dd3dd270fc216e559d0509eb (diff) | |
target-s390: Implement LOAD ON CONDITION
Signed-off-by: Richard Henderson <rth@twiddle.net>
| -rw-r--r-- | target-s390x/insn-data.def | 5 | ||||
| -rw-r--r-- | target-s390x/translate.c | 30 |
2 files changed, 35 insertions, 0 deletions
diff --git a/target-s390x/insn-data.def b/target-s390x/insn-data.def index b739d70d38..91ee0551bb 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 e94c663180..1edb066463 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) { |