From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1E9B9C04AAC for ; Mon, 20 May 2019 17:27:14 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id D7F44214AE for ; Mon, 20 May 2019 17:27:13 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org D7F44214AE Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([127.0.0.1]:39140 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hSm49-0003ir-0z for qemu-devel@archiver.kernel.org; Mon, 20 May 2019 13:27:13 -0400 Received: from eggs.gnu.org ([209.51.188.92]:55119) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hSlo0-0005va-Nh for qemu-devel@nongnu.org; Mon, 20 May 2019 13:10:34 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1hSlnz-0005Ge-2k for qemu-devel@nongnu.org; Mon, 20 May 2019 13:10:32 -0400 Received: from mx1.redhat.com ([209.132.183.28]:20394) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1hSlny-0005DK-RD; Mon, 20 May 2019 13:10:31 -0400 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id E1C3081DE3; Mon, 20 May 2019 17:10:14 +0000 (UTC) Received: from localhost (ovpn-204-110.brq.redhat.com [10.40.204.110]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 21398608A7; Mon, 20 May 2019 17:10:08 +0000 (UTC) From: Cornelia Huck To: Peter Maydell Date: Mon, 20 May 2019 19:02:47 +0200 Message-Id: <20190520170302.13643-40-cohuck@redhat.com> In-Reply-To: <20190520170302.13643-1-cohuck@redhat.com> References: <20190520170302.13643-1-cohuck@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.25]); Mon, 20 May 2019 17:10:24 +0000 (UTC) Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PULL 39/54] s390x/tcg: Implement VECTOR SUBTRACT COMPUTE BORROW INDICATION X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: qemu-s390x@nongnu.org, Richard Henderson , qemu-devel@nongnu.org, David Hildenbrand Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" From: David Hildenbrand Let's keep it simple for now and handle 8/16 bit elements via helpers. Especially for 8/16, we could come up with some bit tricks. Reviewed-by: Richard Henderson Signed-off-by: David Hildenbrand --- target/s390x/helper.h | 2 ++ target/s390x/insn-data.def | 2 ++ target/s390x/translate_vx.inc.c | 52 +++++++++++++++++++++++++++++++++ target/s390x/vec_int_helper.c | 16 ++++++++++ 4 files changed, 72 insertions(+) diff --git a/target/s390x/helper.h b/target/s390x/helper.h index 0f411f2346fb..2cb1f369bd86 100644 --- a/target/s390x/helper.h +++ b/target/s390x/helper.h @@ -207,6 +207,8 @@ DEF_HELPER_FLAGS_4(gvec_verim16, TCG_CALL_NO_RWG, voi= d, ptr, cptr, cptr, i32) DEF_HELPER_FLAGS_4(gvec_vsl, TCG_CALL_NO_RWG, void, ptr, cptr, i64, i32) DEF_HELPER_FLAGS_4(gvec_vsra, TCG_CALL_NO_RWG, void, ptr, cptr, i64, i32= ) DEF_HELPER_FLAGS_4(gvec_vsrl, TCG_CALL_NO_RWG, void, ptr, cptr, i64, i32= ) +DEF_HELPER_FLAGS_4(gvec_vscbi8, TCG_CALL_NO_RWG, void, ptr, cptr, cptr, = i32) +DEF_HELPER_FLAGS_4(gvec_vscbi16, TCG_CALL_NO_RWG, void, ptr, cptr, cptr,= i32) =20 #ifndef CONFIG_USER_ONLY DEF_HELPER_3(servc, i32, env, i64, i64) diff --git a/target/s390x/insn-data.def b/target/s390x/insn-data.def index 58a61f41efeb..94de3c9c7d30 100644 --- a/target/s390x/insn-data.def +++ b/target/s390x/insn-data.def @@ -1176,6 +1176,8 @@ F(0xe77d, VSRLB, VRR_c, V, 0, 0, 0, 0, vsrl, 0, IF_VEC) /* VECTOR SUBTRACT */ F(0xe7f7, VS, VRR_c, V, 0, 0, 0, 0, vs, 0, IF_VEC) +/* VECTOR SUBTRACT COMPUTE BORROW INDICATION */ + F(0xe7f5, VSCBI, VRR_c, V, 0, 0, 0, 0, vscbi, 0, IF_VEC) =20 #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 5f53ae7ec546..b7052f73f8a5 100644 --- a/target/s390x/translate_vx.inc.c +++ b/target/s390x/translate_vx.inc.c @@ -2140,3 +2140,55 @@ static DisasJumpType op_vs(DisasContext *s, DisasO= ps *o) get_field(s->fields, v3)); return DISAS_NEXT; } + +static void gen_scbi_i32(TCGv_i32 d, TCGv_i32 a, TCGv_i32 b) +{ + tcg_gen_setcond_i32(TCG_COND_LTU, d, a, b); +} + +static void gen_scbi_i64(TCGv_i64 d, TCGv_i64 a, TCGv_i64 b) +{ + tcg_gen_setcond_i64(TCG_COND_LTU, d, a, b); +} + +static void gen_scbi2_i64(TCGv_i64 dl, TCGv_i64 dh, TCGv_i64 al, + TCGv_i64 ah, TCGv_i64 bl, TCGv_i64 bh) +{ + TCGv_i64 th =3D tcg_temp_new_i64(); + TCGv_i64 tl =3D tcg_temp_new_i64(); + TCGv_i64 zero =3D tcg_const_i64(0); + + tcg_gen_sub2_i64(tl, th, al, zero, bl, zero); + tcg_gen_andi_i64(th, th, 1); + tcg_gen_sub2_i64(tl, th, ah, zero, th, zero); + tcg_gen_sub2_i64(tl, th, tl, th, bh, zero); + tcg_gen_andi_i64(dl, th, 1); + tcg_gen_mov_i64(dh, zero); + + tcg_temp_free_i64(th); + tcg_temp_free_i64(tl); + tcg_temp_free_i64(zero); +} + +static DisasJumpType op_vscbi(DisasContext *s, DisasOps *o) +{ + const uint8_t es =3D get_field(s->fields, m4); + static const GVecGen3 g[4] =3D { + { .fno =3D gen_helper_gvec_vscbi8, }, + { .fno =3D gen_helper_gvec_vscbi16, }, + { .fni4 =3D gen_scbi_i32, }, + { .fni8 =3D gen_scbi_i64, }, + }; + + if (es > ES_128) { + gen_program_exception(s, PGM_SPECIFICATION); + return DISAS_NORETURN; + } else if (es =3D=3D ES_128) { + gen_gvec128_3_i64(gen_scbi2_i64, get_field(s->fields, v1), + get_field(s->fields, v2), get_field(s->fields,= v3)); + return DISAS_NEXT; + } + gen_gvec_3(get_field(s->fields, v1), get_field(s->fields, v2), + get_field(s->fields, v3), &g[es]); + return DISAS_NEXT; +} diff --git a/target/s390x/vec_int_helper.c b/target/s390x/vec_int_helper.= c index 06f8bfa30dda..09137dab996f 100644 --- a/target/s390x/vec_int_helper.c +++ b/target/s390x/vec_int_helper.c @@ -567,3 +567,19 @@ void HELPER(gvec_vsrl)(void *v1, const void *v2, uin= t64_t count, { s390_vec_shr(v1, v2, count); } + +#define DEF_VSCBI(BITS) = \ +void HELPER(gvec_vscbi##BITS)(void *v1, const void *v2, const void *v3, = \ + uint32_t desc) = \ +{ = \ + int i; = \ + = \ + for (i =3D 0; i < (128 / BITS); i++) { = \ + const uint##BITS##_t a =3D s390_vec_read_element##BITS(v2, i); = \ + const uint##BITS##_t b =3D s390_vec_read_element##BITS(v3, i); = \ + = \ + s390_vec_write_element##BITS(v1, i, a < b); = \ + } = \ +} +DEF_VSCBI(8) +DEF_VSCBI(16) --=20 2.20.1