From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([209.51.188.92]:54388) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hEWsC-0002Us-NT for qemu-devel@nongnu.org; Thu, 11 Apr 2019 06:24:01 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1hEWeg-0007g9-Jw for qemu-devel@nongnu.org; Thu, 11 Apr 2019 06:10:03 -0400 From: David Hildenbrand Date: Thu, 11 Apr 2019 12:08:31 +0200 Message-Id: <20190411100836.646-37-david@redhat.com> In-Reply-To: <20190411100836.646-1-david@redhat.com> References: <20190411100836.646-1-david@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Subject: [Qemu-devel] [PATCH v1 36/41] s390x/tcg: Implement VECTOR SUBTRACT WITH BORROW INDICATION List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: qemu-s390x@nongnu.org, Thomas Huth , Cornelia Huck , Richard Henderson , David Hildenbrand Fairly easy as only 128-bit handling is required. Simply perform the subtraction and then subtract the borrow. Signed-off-by: David Hildenbrand --- target/s390x/insn-data.def | 2 ++ target/s390x/translate_vx.inc.c | 27 +++++++++++++++++++++++++++ 2 files changed, 29 insertions(+) diff --git a/target/s390x/insn-data.def b/target/s390x/insn-data.def index 94de3c9c7d..a60d8531dc 100644 --- a/target/s390x/insn-data.def +++ b/target/s390x/insn-data.def @@ -1178,6 +1178,8 @@ 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) +/* VECTOR SUBTRACT WITH BORROW INDICATION */ + F(0xe7bf, VSBI, VRR_d, V, 0, 0, 0, 0, vsbi, 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 7770ca4101..3f60b97654 100644 --- a/target/s390x/translate_vx.inc.c +++ b/target/s390x/translate_vx.inc.c @@ -2185,3 +2185,30 @@ static DisasJumpType op_vscbi(DisasContext *s, Dis= asOps *o) get_field(s->fields, v3), &g[es]); return DISAS_NEXT; } + +static void gen_sbi2_i64(TCGv_i64 dl, TCGv_i64 dh, TCGv_i64 al, TCGv_i64= ah, + TCGv_i64 bl, TCGv_i64 bh, TCGv_i64 cl, TCGv_i64= ch) +{ + TCGv_i64 tl =3D tcg_temp_new_i64(); + TCGv_i64 th =3D tcg_const_i64(0); + + /* extract the borrow only */ + tcg_gen_extract_i64(tl, cl, 0, 1); + tcg_gen_sub2_i64(dl, dh, al, ah, bl, bh); + tcg_gen_sub2_i64(dl, dh, dl, dh, tl, th); + tcg_temp_free_i64(tl); + tcg_temp_free_i64(th); +} + +static DisasJumpType op_vsbi(DisasContext *s, DisasOps *o) +{ + if (get_field(s->fields, m5) !=3D ES_128) { + gen_program_exception(s, PGM_SPECIFICATION); + return DISAS_NORETURN; + } + + gen_gvec128_4_i64(gen_sbi2_i64, get_field(s->fields, v1), + get_field(s->fields, v2), get_field(s->fields, v3)= , + get_field(s->fields, v4)); + return DISAS_NEXT; +} --=20 2.20.1 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=-6.9 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS 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 20359C10F14 for ; 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Thu, 11 Apr 2019 06:10:03 -0400 Received: from mx1.redhat.com ([209.132.183.28]:56434) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1hEWeg-0007ec-CX; Thu, 11 Apr 2019 06:10:02 -0400 Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.phx2.redhat.com [10.5.11.22]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 9A5BC8666E; Thu, 11 Apr 2019 10:10:01 +0000 (UTC) Received: from t460s.redhat.com (unknown [10.36.118.43]) by smtp.corp.redhat.com (Postfix) with ESMTP id 8C6531001E71; Thu, 11 Apr 2019 10:09:58 +0000 (UTC) From: David Hildenbrand To: qemu-devel@nongnu.org Date: Thu, 11 Apr 2019 12:08:31 +0200 Message-Id: <20190411100836.646-37-david@redhat.com> In-Reply-To: <20190411100836.646-1-david@redhat.com> References: <20190411100836.646-1-david@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.22 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.26]); Thu, 11 Apr 2019 10:10:01 +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] [PATCH v1 36/41] s390x/tcg: Implement VECTOR SUBTRACT WITH 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, Cornelia Huck , David Hildenbrand , Thomas Huth , Richard Henderson Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Content-Type: text/plain; charset="UTF-8" Message-ID: <20190411100831.LVb5QXgOiweIXg3M5NdtyRD3gTX48Fjh0h--VelGwuE@z> Fairly easy as only 128-bit handling is required. Simply perform the subtraction and then subtract the borrow. Signed-off-by: David Hildenbrand --- target/s390x/insn-data.def | 2 ++ target/s390x/translate_vx.inc.c | 27 +++++++++++++++++++++++++++ 2 files changed, 29 insertions(+) diff --git a/target/s390x/insn-data.def b/target/s390x/insn-data.def index 94de3c9c7d..a60d8531dc 100644 --- a/target/s390x/insn-data.def +++ b/target/s390x/insn-data.def @@ -1178,6 +1178,8 @@ 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) +/* VECTOR SUBTRACT WITH BORROW INDICATION */ + F(0xe7bf, VSBI, VRR_d, V, 0, 0, 0, 0, vsbi, 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 7770ca4101..3f60b97654 100644 --- a/target/s390x/translate_vx.inc.c +++ b/target/s390x/translate_vx.inc.c @@ -2185,3 +2185,30 @@ static DisasJumpType op_vscbi(DisasContext *s, Dis= asOps *o) get_field(s->fields, v3), &g[es]); return DISAS_NEXT; } + +static void gen_sbi2_i64(TCGv_i64 dl, TCGv_i64 dh, TCGv_i64 al, TCGv_i64= ah, + TCGv_i64 bl, TCGv_i64 bh, TCGv_i64 cl, TCGv_i64= ch) +{ + TCGv_i64 tl =3D tcg_temp_new_i64(); + TCGv_i64 th =3D tcg_const_i64(0); + + /* extract the borrow only */ + tcg_gen_extract_i64(tl, cl, 0, 1); + tcg_gen_sub2_i64(dl, dh, al, ah, bl, bh); + tcg_gen_sub2_i64(dl, dh, dl, dh, tl, th); + tcg_temp_free_i64(tl); + tcg_temp_free_i64(th); +} + +static DisasJumpType op_vsbi(DisasContext *s, DisasOps *o) +{ + if (get_field(s->fields, m5) !=3D ES_128) { + gen_program_exception(s, PGM_SPECIFICATION); + return DISAS_NORETURN; + } + + gen_gvec128_4_i64(gen_sbi2_i64, get_field(s->fields, v1), + get_field(s->fields, v2), get_field(s->fields, v3)= , + get_field(s->fields, v4)); + return DISAS_NEXT; +} --=20 2.20.1