From patchwork Tue Nov 1 15:24:48 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: 689958 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 3t7ZpK0lqMz9t2T for ; Wed, 2 Nov 2016 02:26:49 +1100 (AEDT) Received: from localhost ([::1]:48567 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1c1axa-0006I7-A0 for incoming@patchwork.ozlabs.org; Tue, 01 Nov 2016 11:26:46 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:44598) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1c1aw9-00056c-Tc for qemu-devel@nongnu.org; Tue, 01 Nov 2016 11:25:18 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1c1aw6-0003qB-Pg for qemu-devel@nongnu.org; Tue, 01 Nov 2016 11:25:17 -0400 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:58679) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1c1aw6-0003pX-Hp for qemu-devel@nongnu.org; Tue, 01 Nov 2016 11:25:14 -0400 Received: from pps.filterd (m0098394.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.17/8.16.0.17) with SMTP id uA1FO5Gd075587 for ; Tue, 1 Nov 2016 11:25:13 -0400 Received: from e24smtp04.br.ibm.com (e24smtp04.br.ibm.com [32.104.18.25]) by mx0a-001b2d01.pphosted.com with ESMTP id 26ewf9h7x4-1 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=NOT) for ; Tue, 01 Nov 2016 11:25:13 -0400 Received: from localhost by e24smtp04.br.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Violators will be prosecuted; Tue, 1 Nov 2016 13:25:09 -0200 Received: from d24relay01.br.ibm.com (d24relay01.br.ibm.com [9.8.31.16]) by d24dlp02.br.ibm.com (Postfix) with ESMTP id A58411DC006D; Tue, 1 Nov 2016 11:25:08 -0400 (EDT) Received: from d24av01.br.ibm.com (d24av01.br.ibm.com [9.8.31.91]) by d24relay01.br.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id uA1FP8o04599906; Tue, 1 Nov 2016 13:25:08 -0200 Received: from d24av01.br.ibm.com (localhost [127.0.0.1]) by d24av01.br.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id uA1FP8Eg007155; Tue, 1 Nov 2016 13:25:08 -0200 Received: from pacoca.ibm.com ([9.85.154.242]) by d24av01.br.ibm.com (8.14.4/8.14.4/NCO v10.0 AVin) with ESMTP id uA1FOpNK006668; Tue, 1 Nov 2016 13:25:05 -0200 From: Jose Ricardo Ziviani To: qemu-ppc@nongnu.org Date: Tue, 1 Nov 2016 13:24:48 -0200 X-Mailer: git-send-email 2.7.4 In-Reply-To: <1478013888-22242-1-git-send-email-joserz@linux.vnet.ibm.com> References: <1478013888-22242-1-git-send-email-joserz@linux.vnet.ibm.com> X-TM-AS-MML: disable X-Content-Scanned: Fidelis XPS MAILER x-cbid: 16110115-0028-0000-0000-000001611AC5 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 16110115-0029-0000-0000-000014572101 Message-Id: <1478013888-22242-5-git-send-email-joserz@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:, , definitions=2016-11-01_04:, , 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-1611010268 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [generic] X-Received-From: 148.163.156.1 Subject: [Qemu-devel] [PATCH v4 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+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" 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 | 49 +++++++++++++++++++++++++++++++++++++ target-ppc/translate/vmx-impl.inc.c | 7 ++++++ 3 files changed, 57 insertions(+) diff --git a/target-ppc/helper.h b/target-ppc/helper.h index 8546bb9..5412da5 100644 --- a/target-ppc/helper.h +++ b/target-ppc/helper.h @@ -374,6 +374,7 @@ 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_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 c546a9a..5983a32 100644 --- a/target-ppc/int_helper.c +++ b/target-ppc/int_helper.c @@ -2774,6 +2774,55 @@ uint32_t helper_bcdcfz(ppc_avr_t *r, ppc_avr_t *b, uint32_t ps) return cr; } +uint32_t helper_bcdctz(ppc_avr_t *r, ppc_avr_t *b, uint32_t ps) +{ + int i; + int j; + int cr = 0; + uint8_t digit = 0; + int sgnb = bcd_get_sgn(b); + int zone_lead = (ps) ? 0xF0 : 0x30; + int invalid = (sgnb == 0); + 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] >> 4) != 0); + + for (i = 0, j = 1; i < 32; i += 2, j++) { + digit = bcd_get_digit(b, j, &invalid); + + if (unlikely(invalid)) { + break; + } + + ret.u8[BCD_DIG_BYTE(i)] = zone_lead + digit; + } + + if (ps) { + bcd_put_digit(&ret, (sgnb == 1) ? 0xC : 0xD, 1); + } else { + bcd_put_digit(&ret, (sgnb == 1) ? 0x3 : 0x7, 1); + } + + 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 7e902a9..b05c874 100644 --- a/target-ppc/translate/vmx-impl.inc.c +++ b/target-ppc/translate/vmx-impl.inc.c @@ -973,10 +973,14 @@ GEN_BCD(bcdsub) GEN_BCD2(bcdcfn) GEN_BCD2(bcdctn) GEN_BCD2(bcdcfz) +GEN_BCD2(bcdctz) static void gen_xpnd04_1(DisasContext *ctx) { switch (opc4(ctx->opcode)) { + case 4: + gen_bcdctz(ctx); + break; case 5: gen_bcdctn(ctx); break; @@ -995,6 +999,9 @@ static void gen_xpnd04_1(DisasContext *ctx) static void gen_xpnd04_2(DisasContext *ctx) { switch (opc4(ctx->opcode)) { + case 4: + gen_bcdctz(ctx); + break; case 6: gen_bcdcfz(ctx); break;