diff options
| author | David Hildenbrand <david@redhat.com> | 2019-03-07 13:15:22 +0100 |
|---|---|---|
| committer | Cornelia Huck <cohuck@redhat.com> | 2019-03-11 09:31:01 +0100 |
| commit | 90e3af6bb8674c551d523a025048d783fb2a96bc (patch) | |
| tree | 4cd50307217ef0ace0257702f68e36b4cdd9ec50 | |
| parent | 60e9e3f1b0117a3aefd4a8047168f1c20f6c9013 (diff) | |
| download | qemu-90e3af6bb8674c551d523a025048d783fb2a96bc.zip | |
s390x/tcg: Implement VECTOR LOAD VR ELEMENT FROM GR
Very similar to VECTOR LOAD GR FROM VR ELEMENT, just the opposite
direction. Also provide a fast path in case we don't care about the
register content.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20190307121539.12842-16-david@redhat.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
| -rw-r--r-- | target/s390x/insn-data.def | 2 | ||||
| -rw-r--r-- | target/s390x/translate_vx.inc.c | 41 |
2 files changed, 43 insertions, 0 deletions
diff --git a/target/s390x/insn-data.def b/target/s390x/insn-data.def index ad8df5283c..6814061204 100644 --- a/target/s390x/insn-data.def +++ b/target/s390x/insn-data.def @@ -1004,6 +1004,8 @@ F(0xe736, VLM, VRS_a, V, la2, 0, 0, 0, vlm, 0, IF_VEC) /* VECTOR LOAD TO BLOCK BOUNDARY */ F(0xe707, VLBB, VRX, V, la2, 0, 0, 0, vlbb, 0, IF_VEC) +/* VECTOR LOAD VR ELEMENT FROM GR */ + F(0xe722, VLVG, VRS_b, V, la2, r3, 0, 0, vlvg, 0, IF_VEC) #ifndef CONFIG_USER_ONLY /* COMPARE AND SWAP AND PURGE */ diff --git a/target/s390x/translate_vx.inc.c b/target/s390x/translate_vx.inc.c index f1eb458902..287bd9627d 100644 --- a/target/s390x/translate_vx.inc.c +++ b/target/s390x/translate_vx.inc.c @@ -471,3 +471,44 @@ static DisasJumpType op_vlbb(DisasContext *s, DisasOps *o) tcg_temp_free_ptr(a0); return DISAS_NEXT; } + +static DisasJumpType op_vlvg(DisasContext *s, DisasOps *o) +{ + const uint8_t es = get_field(s->fields, m4); + TCGv_ptr ptr; + + if (es > ES_64) { + gen_program_exception(s, PGM_SPECIFICATION); + return DISAS_NORETURN; + } + + /* fast path if we don't need the register content */ + if (!get_field(s->fields, b2)) { + uint8_t enr = get_field(s->fields, d2) & (NUM_VEC_ELEMENTS(es) - 1); + + write_vec_element_i64(o->in2, get_field(s->fields, v1), enr, es); + return DISAS_NEXT; + } + + ptr = tcg_temp_new_ptr(); + get_vec_element_ptr_i64(ptr, get_field(s->fields, v1), o->addr1, es); + switch (es) { + case ES_8: + tcg_gen_st8_i64(o->in2, ptr, 0); + break; + case ES_16: + tcg_gen_st16_i64(o->in2, ptr, 0); + break; + case ES_32: + tcg_gen_st32_i64(o->in2, ptr, 0); + break; + case ES_64: + tcg_gen_st_i64(o->in2, ptr, 0); + break; + default: + g_assert_not_reached(); + } + tcg_temp_free_ptr(ptr); + + return DISAS_NEXT; +} |