From patchwork Wed Oct 26 13:18:58 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jose Ricardo Ziviani X-Patchwork-Id: 9397213 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 8A83660231 for ; Wed, 26 Oct 2016 13:20:12 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 673CB29B51 for ; Wed, 26 Oct 2016 13:20:08 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 5B86729B53; Wed, 26 Oct 2016 13:20:08 +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=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id EFFBB29B51 for ; Wed, 26 Oct 2016 13:20:07 +0000 (UTC) Received: from localhost ([::1]:34424 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bzO7j-0008Un-3B for patchwork-qemu-devel@patchwork.kernel.org; Wed, 26 Oct 2016 09:20:07 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:46320) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bzO74-0008Oi-Ad for qemu-devel@nongnu.org; Wed, 26 Oct 2016 09:19:30 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1bzO73-0002Qn-CX for qemu-devel@nongnu.org; Wed, 26 Oct 2016 09:19:26 -0400 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:60944) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1bzO73-0002QM-3K for qemu-devel@nongnu.org; Wed, 26 Oct 2016 09:19:25 -0400 Received: from pps.filterd (m0098404.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.17/8.16.0.17) with SMTP id u9QDJ79w054007 for ; Wed, 26 Oct 2016 09:19:24 -0400 Received: from e24smtp02.br.ibm.com (e24smtp02.br.ibm.com [32.104.18.86]) by mx0a-001b2d01.pphosted.com with ESMTP id 26avqqt4mm-1 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=NOT) for ; Wed, 26 Oct 2016 09:19:24 -0400 Received: from localhost by e24smtp02.br.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Violators will be prosecuted; Wed, 26 Oct 2016 11:19:19 -0200 Received: from d24relay04.br.ibm.com (d24relay04.br.ibm.com [9.18.232.146]) by d24dlp02.br.ibm.com (Postfix) with ESMTP id 139771DC006E; Wed, 26 Oct 2016 09:19:19 -0400 (EDT) Received: from d24av05.br.ibm.com (d24av05.br.ibm.com [9.18.232.44]) by d24relay04.br.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id u9QDJI8X39977034; Wed, 26 Oct 2016 11:19:18 -0200 Received: from d24av05.br.ibm.com (localhost [127.0.0.1]) by d24av05.br.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id u9QDJFmV010398; Wed, 26 Oct 2016 11:19:15 -0200 Received: from pacoca.ibm.com ([9.85.132.139]) by d24av05.br.ibm.com (8.14.4/8.14.4/NCO v10.0 AVin) with ESMTP id u9QDIxHT009740; Wed, 26 Oct 2016 11:19:13 -0200 From: Jose Ricardo Ziviani To: qemu-ppc@nongnu.org Date: Wed, 26 Oct 2016 11:18:58 -0200 X-Mailer: git-send-email 2.7.4 In-Reply-To: <1477487938-23921-1-git-send-email-joserz@linux.vnet.ibm.com> References: <1477487938-23921-1-git-send-email-joserz@linux.vnet.ibm.com> X-TM-AS-MML: disable X-Content-Scanned: Fidelis XPS MAILER x-cbid: 16102613-0020-0000-0000-00000256A7A2 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 16102613-0021-0000-0000-00003061D338 Message-Id: <1477487938-23921-5-git-send-email-joserz@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:, , definitions=2016-10-26_06:, , signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 suspectscore=1 malwarescore=0 phishscore=0 adultscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1609300000 definitions=main-1610260229 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [generic] X-Received-From: 148.163.156.1 Subject: [Qemu-devel] [PATCH] 4/4] target-ppc: Implement bcdctz. instruction 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: bharata@linux.vnet.ibm.com, qemu-devel@nongnu.org, nikunj@linux.vnet.ibm.com, david@gibson.dropbear.id.au Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP bcdctz. converts from BCD to Zoned numeric format. Zoned format uses a byte to represent a digit where the most significant nibble is 0x3 or 0xf, depending on the preferred signal. Signed-off-by: Jose Ricardo Ziviani --- target-ppc/helper.h | 1 + target-ppc/int_helper.c | 54 +++++++++++++++++++++++++++++++++++++ target-ppc/translate/vmx-impl.inc.c | 7 +++-- 3 files changed, 60 insertions(+), 2 deletions(-) diff --git a/target-ppc/helper.h b/target-ppc/helper.h index f460635..3b928b8 100644 --- a/target-ppc/helper.h +++ b/target-ppc/helper.h @@ -372,6 +372,7 @@ DEF_HELPER_4(bcdsub, i32, avr, avr, avr, i32) DEF_HELPER_3(bcdcfn, i32, avr, avr, i32) DEF_HELPER_2(bcdctn, i32, avr, avr) DEF_HELPER_3(bcdcfz, i32, avr, avr, i32) +DEF_HELPER_3(bcdctz, i32, avr, avr, i32) DEF_HELPER_2(xsadddp, void, env, i32) DEF_HELPER_2(xssubdp, void, env, i32) diff --git a/target-ppc/int_helper.c b/target-ppc/int_helper.c index 8cbbdfc..e0a84bb 100644 --- a/target-ppc/int_helper.c +++ b/target-ppc/int_helper.c @@ -2768,6 +2768,60 @@ uint32_t helper_bcdcfz(ppc_avr_t *r, ppc_avr_t *b, uint32_t ps) *r = ret; return cr; } + +uint32_t helper_bcdctz(ppc_avr_t *r, ppc_avr_t *b, uint32_t ps) +{ + int i; + int j; + int cr = 0; + int invalid = 0; + uint8_t digit = 0; + int sgnb = bcd_get_sgn(b); + int zone_lead = (ps) ? 0xF0 : 0x30; + ppc_avr_t ret = { .u64 = { 0, 0 } }; + + int eq_flag = (b->u64[HI_IDX] == 0) && ((b->u64[LO_IDX] >> 4) == 0); + int ox_flag = (b->u64[HI_IDX] != 0); + + for (i = 31, j = 16; i > 1; i -= 2, j--) { + digit = get_nibble(b, j); + ret.u8[BCD_DIG_BYTE(i)] = zone_lead + digit; + + if (unlikely(digit > 9)) { + invalid = 1; + } + } + + if (unlikely(!sgnb)) { + sgnb = (!get_nibble(b, 0)) ? 1 : -1; + } + + if (ps) { + bcd_put_digit(&ret, (sgnb == 1) ? 0xC : 0xD, 1); + } else { + bcd_put_digit(&ret, (sgnb == 1) ? 0x3 : 0x7, 1); + } + bcd_put_digit(&ret, get_nibble(b, 1), 0); + + if (!eq_flag) { + cr = (sgnb == 1) ? 1 << CRF_GT : 1 << CRF_LT; + } else { + cr = 1 << CRF_EQ; + } + + if (ox_flag) { + cr |= 1 << CRF_SO; + } + + if (unlikely(invalid)) { + cr = 1 << CRF_SO; + } + + *r = ret; + + return cr; +} + void helper_vsbox(ppc_avr_t *r, ppc_avr_t *a) { int i; diff --git a/target-ppc/translate/vmx-impl.inc.c b/target-ppc/translate/vmx-impl.inc.c index 9192f8f..62c44f0 100644 --- a/target-ppc/translate/vmx-impl.inc.c +++ b/target-ppc/translate/vmx-impl.inc.c @@ -918,6 +918,7 @@ GEN_BCD(bcdsub) GEN_BCD2(bcdcfn) GEN_BCD3(bcdctn) GEN_BCD2(bcdcfz) +GEN_BCD2(bcdctz) static void gen_xpnd04_1(DisasContext *ctx) { @@ -927,7 +928,8 @@ static void gen_xpnd04_1(DisasContext *ctx) case 2: break; /* bcdcfsq. */ case 4: - break; /* bcdctz. */ + gen_bcdctz(ctx); + break; case 5: gen_bcdctn(ctx); break; @@ -952,7 +954,8 @@ static void gen_xpnd04_2(DisasContext *ctx) case 2: break; /* bcdcfsq. */ case 4: - break; /* bcdctz. */ + gen_bcdctz(ctx); + break; case 6: gen_bcdcfz(ctx); break;