From patchwork Mon Oct 31 17:34:48 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: 689549 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 3t72xC2dGRz9t1P for ; Tue, 1 Nov 2016 05:30:55 +1100 (AEDT) Received: from localhost ([::1]:37767 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1c1HMC-0001lB-KF for incoming@patchwork.ozlabs.org; Mon, 31 Oct 2016 14:30:52 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:36728) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1c1GUM-0007aS-TM for qemu-devel@nongnu.org; Mon, 31 Oct 2016 13:35:18 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1c1GUJ-0002Ls-4p for qemu-devel@nongnu.org; Mon, 31 Oct 2016 13:35:14 -0400 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:38042) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1c1GUI-0002LV-Te for qemu-devel@nongnu.org; Mon, 31 Oct 2016 13:35:11 -0400 Received: from pps.filterd (m0098396.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.17/8.16.0.17) with SMTP id u9VHXler053138 for ; Mon, 31 Oct 2016 13:35:10 -0400 Received: from e24smtp03.br.ibm.com (e24smtp03.br.ibm.com [32.104.18.24]) by mx0a-001b2d01.pphosted.com with ESMTP id 26e556h5m5-1 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=NOT) for ; Mon, 31 Oct 2016 13:35:09 -0400 Received: from localhost by e24smtp03.br.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Violators will be prosecuted; Mon, 31 Oct 2016 15:35:05 -0200 Received: from d24relay04.br.ibm.com (d24relay04.br.ibm.com [9.18.232.146]) by d24dlp01.br.ibm.com (Postfix) with ESMTP id 11A973520076; Mon, 31 Oct 2016 13:34:38 -0400 (EDT) Received: from d24av03.br.ibm.com (d24av03.br.ibm.com [9.8.31.95]) by d24relay04.br.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id u9VHZ5m022675660; Mon, 31 Oct 2016 15:35:05 -0200 Received: from d24av03.br.ibm.com (localhost [127.0.0.1]) by d24av03.br.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id u9VHZ5UT027235; Mon, 31 Oct 2016 15:35:05 -0200 Received: from pacoca.ibm.com ([9.85.154.242]) by d24av03.br.ibm.com (8.14.4/8.14.4/NCO v10.0 AVin) with ESMTP id u9VHYpZt026698; Mon, 31 Oct 2016 15:35:02 -0200 From: Jose Ricardo Ziviani To: qemu-ppc@nongnu.org Date: Mon, 31 Oct 2016 15:34:48 -0200 X-Mailer: git-send-email 2.7.4 In-Reply-To: <1477935289-5010-1-git-send-email-joserz@linux.vnet.ibm.com> References: <1477935289-5010-1-git-send-email-joserz@linux.vnet.ibm.com> X-TM-AS-MML: disable X-Content-Scanned: Fidelis XPS MAILER x-cbid: 16103117-0024-0000-0000-0000011F13C0 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 16103117-0025-0000-0000-000015DCABB0 Message-Id: <1477935289-5010-4-git-send-email-joserz@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:, , definitions=2016-10-31_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-1610310310 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [generic] X-Received-From: 148.163.156.1 Subject: [Qemu-devel] [PATCH v3 3/4] target-ppc: Implement bcdcfz. 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+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" bcdcfz. converts from Zoned numeric format to BCD. 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 | 48 +++++++++++++++++++++++++++++++++++++ target-ppc/translate/vmx-impl.inc.c | 7 ++++-- 3 files changed, 54 insertions(+), 2 deletions(-) diff --git a/target-ppc/helper.h b/target-ppc/helper.h index 33286c6..8546bb9 100644 --- a/target-ppc/helper.h +++ b/target-ppc/helper.h @@ -373,6 +373,7 @@ DEF_HELPER_4(bcdadd, i32, avr, avr, avr, i32) DEF_HELPER_4(bcdsub, i32, avr, avr, avr, i32) DEF_HELPER_3(bcdcfn, i32, avr, avr, i32) DEF_HELPER_3(bcdctn, i32, avr, avr, i32) +DEF_HELPER_3(bcdcfz, 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 aaaf642..6581887 100644 --- a/target-ppc/int_helper.c +++ b/target-ppc/int_helper.c @@ -2727,6 +2727,54 @@ uint32_t helper_bcdctn(ppc_avr_t *r, ppc_avr_t *b, uint32_t ps) return cr; } +uint32_t helper_bcdcfz(ppc_avr_t *r, ppc_avr_t *b, uint32_t ps) +{ + int i; + int j; + int cr = 0; + int invalid = 0; + int neq_flag = 0; + int zone_digit = 0; + int zone_lead = ps ? 0xF : 0x3; + int digit = 0; + ppc_avr_t ret = { .u64 = { 0, 0 } }; + int sgnb = b->u8[BCD_DIG_BYTE(0)] >> 4; + + if (unlikely((sgnb < 0xA) && ps)) { + invalid = 1; + } + + for (i = 0, j = 1; i < 31; i += 2, j++) { + zone_digit = (i) ? b->u8[BCD_DIG_BYTE(i)] >> 4 : zone_lead; + digit = b->u8[BCD_DIG_BYTE(i)] & 0xF; + + if (unlikely(zone_digit != zone_lead || digit > 0x9)) { + invalid = 1; + break; + } + + neq_flag += (digit != 0); + bcd_put_digit(&ret, digit, j); + } + + if ((ps && (sgnb == 0xB || sgnb == 0xD)) || + (!ps && (sgnb & 0x4))) { + bcd_put_digit(&ret, BCD_NEG_PREF, 0); + cr = (neq_flag) ? 1 << CRF_LT : 1 << CRF_EQ; + } else { + bcd_put_digit(&ret, BCD_PLUS_PREF_1, 0); + cr = (neq_flag) ? 1 << CRF_GT : 1 << CRF_EQ; + } + + 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 301088e..ecf0e54 100644 --- a/target-ppc/translate/vmx-impl.inc.c +++ b/target-ppc/translate/vmx-impl.inc.c @@ -972,6 +972,7 @@ GEN_BCD(bcdadd) GEN_BCD(bcdsub) GEN_BCD2(bcdcfn) GEN_BCD2(bcdctn) +GEN_BCD2(bcdcfz) static void gen_xpnd04_1(DisasContext *ctx) { @@ -986,7 +987,8 @@ static void gen_xpnd04_1(DisasContext *ctx) gen_bcdctn(ctx); break; case 6: - break; /* bcdcfz. */ + gen_bcdcfz(ctx); + break; case 7: gen_bcdcfn(ctx); break; @@ -1008,7 +1010,8 @@ static void gen_xpnd04_2(DisasContext *ctx) case 4: break; /* bcdctz. */ case 6: - break; /* bcdcfz. */ + gen_bcdcfz(ctx); + break; case 7: gen_bcdcfn(ctx); break;