From patchwork Fri Mar 1 11:53:59 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: David Hildenbrand X-Patchwork-Id: 10835019 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id BBC7F1390 for ; Fri, 1 Mar 2019 12:05:17 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id A8E1D2EE01 for ; Fri, 1 Mar 2019 12:05:17 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 9D9062EE03; Fri, 1 Mar 2019 12:05:17 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI autolearn=ham version=3.3.1 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.wl.linuxfoundation.org (Postfix) with ESMTPS id 2F2ED2A4BA for ; Fri, 1 Mar 2019 12:05:17 +0000 (UTC) Received: from localhost ([127.0.0.1]:36294 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gzgui-0002Gi-7X for patchwork-qemu-devel@patchwork.kernel.org; Fri, 01 Mar 2019 07:05:16 -0500 Received: from eggs.gnu.org ([209.51.188.92]:40141) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gzgkp-0003ME-OD for qemu-devel@nongnu.org; Fri, 01 Mar 2019 06:55:04 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1gzgko-0006gL-Rw for qemu-devel@nongnu.org; Fri, 01 Mar 2019 06:55:03 -0500 Received: from mx1.redhat.com ([209.132.183.28]:1513) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1gzgko-0006fY-JD; Fri, 01 Mar 2019 06:55:02 -0500 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.phx2.redhat.com [10.5.11.16]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id D42263001A8B; Fri, 1 Mar 2019 11:55:01 +0000 (UTC) Received: from t460s.redhat.com (ovpn-117-149.ams2.redhat.com [10.36.117.149]) by smtp.corp.redhat.com (Postfix) with ESMTP id 5B7535C1B5; Fri, 1 Mar 2019 11:54:59 +0000 (UTC) From: David Hildenbrand To: qemu-devel@nongnu.org Date: Fri, 1 Mar 2019 12:53:59 +0100 Message-Id: <20190301115413.27153-19-david@redhat.com> In-Reply-To: <20190301115413.27153-1-david@redhat.com> References: <20190301115413.27153-1-david@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.45]); Fri, 01 Mar 2019 11:55:01 +0000 (UTC) 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 v2 18/32] s390x/tcg: Implement VECTOR MERGE (HIGH|LOW) 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+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP We cannot use gvec expansion as source and destination elements are have different element numbers. So we'll expand using a fancy loop. Also, we have to take care of overlapping source and destination registers, therefore use a safe evaluation irder depending on the operation. Signed-off-by: David Hildenbrand Reviewed-by: Richard Henderson --- target/s390x/insn-data.def | 4 ++++ target/s390x/translate_vx.inc.c | 42 +++++++++++++++++++++++++++++++++ 2 files changed, 46 insertions(+) diff --git a/target/s390x/insn-data.def b/target/s390x/insn-data.def index 3c0b14bafd..f7232f8615 100644 --- a/target/s390x/insn-data.def +++ b/target/s390x/insn-data.def @@ -1010,6 +1010,10 @@ F(0xe762, VLVGP, VRR_f, V, r2, r3, 0, 0, vlvgp, 0, IF_VEC) /* VECTOR LOAD WITH LENGTH */ F(0xe737, VLL, VRS_b, V, la2, r3_32u, 0, 0, vll, 0, IF_VEC) +/* VECTOR MERGE HIGH */ + F(0xe761, VMRH, VRR_c, V, 0, 0, 0, 0, vmr, 0, IF_VEC) +/* VECTOR MERGE LOW */ + F(0xe760, VMRL, VRR_c, V, 0, 0, 0, 0, vmr, 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 0ce9de2332..35a63cd3db 100644 --- a/target/s390x/translate_vx.inc.c +++ b/target/s390x/translate_vx.inc.c @@ -526,3 +526,45 @@ static DisasJumpType op_vll(DisasContext *s, DisasOps *o) tcg_temp_free_ptr(a0); return DISAS_NEXT; } + +static DisasJumpType op_vmr(DisasContext *s, DisasOps *o) +{ + const uint8_t v1 = get_field(s->fields, v1); + const uint8_t v2 = get_field(s->fields, v2); + const uint8_t v3 = get_field(s->fields, v3); + const uint8_t es = get_field(s->fields, m4); + int dst_idx, src_idx; + TCGv_i64 tmp; + + if (es > ES_64) { + gen_program_exception(s, PGM_SPECIFICATION); + return DISAS_NORETURN; + } + + tmp = tcg_temp_new_i64(); + if (s->fields->op2 == 0x61) { + /* iterate backwards to avoid overwriting data we might need later */ + for (dst_idx = NUM_VEC_ELEMENTS(es) - 1; dst_idx >= 0; dst_idx--) { + src_idx = dst_idx / 2; + if (dst_idx % 2 == 0) { + read_vec_element_i64(tmp, v2, src_idx, es); + } else { + read_vec_element_i64(tmp, v3, src_idx, es); + } + write_vec_element_i64(tmp, v1, dst_idx, es); + } + } else { + /* iterate forward to avoid overwriting data we might need later */ + for (dst_idx = 0; dst_idx < NUM_VEC_ELEMENTS(es); dst_idx++) { + src_idx = (dst_idx + NUM_VEC_ELEMENTS(es)) / 2; + if (dst_idx % 2 == 0) { + read_vec_element_i64(tmp, v2, src_idx, es); + } else { + read_vec_element_i64(tmp, v3, src_idx, es); + } + write_vec_element_i64(tmp, v1, dst_idx, es); + } + } + tcg_temp_free_i64(tmp); + return DISAS_NEXT; +}