From patchwork Tue Jan 10 02:10:13 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jose Ricardo Ziviani X-Patchwork-Id: 713056 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 3tyFsn31ZSz9sf9 for ; Tue, 10 Jan 2017 13:12:45 +1100 (AEDT) Received: from localhost ([::1]:44197 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cQlvW-0003St-Vc for incoming@patchwork.ozlabs.org; Mon, 09 Jan 2017 21:12:43 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:55472) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cQltn-00021B-4U for qemu-devel@nongnu.org; Mon, 09 Jan 2017 21:10:57 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1cQltj-0008U2-RE for qemu-devel@nongnu.org; Mon, 09 Jan 2017 21:10:55 -0500 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:35901 helo=mx0a-001b2d01.pphosted.com) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1cQltj-0008Tr-MJ for qemu-devel@nongnu.org; Mon, 09 Jan 2017 21:10:51 -0500 Received: from pps.filterd (m0098417.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.17/8.16.0.17) with SMTP id v0A29FMZ077503 for ; Mon, 9 Jan 2017 21:10:51 -0500 Received: from e24smtp01.br.ibm.com (e24smtp01.br.ibm.com [32.104.18.85]) by mx0a-001b2d01.pphosted.com with ESMTP id 27vkwrn7aq-1 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=NOT) for ; Mon, 09 Jan 2017 21:10:51 -0500 Received: from localhost by e24smtp01.br.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Violators will be prosecuted; Tue, 10 Jan 2017 00:10:46 -0200 Received: from d24relay04.br.ibm.com (d24relay04.br.ibm.com [9.18.232.146]) by d24dlp01.br.ibm.com (Postfix) with ESMTP id 4C812352005F; Mon, 9 Jan 2017 21:10:15 -0500 (EST) Received: from d24av04.br.ibm.com (d24av04.br.ibm.com [9.8.31.97]) by d24relay04.br.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id v0A2AjUd10354804; Tue, 10 Jan 2017 00:10:45 -0200 Received: from d24av04.br.ibm.com (localhost [127.0.0.1]) by d24av04.br.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id v0A2AjTT031309; Tue, 10 Jan 2017 00:10:45 -0200 Received: from pacoca.ibm.com ([9.80.212.96]) by d24av04.br.ibm.com (8.14.4/8.14.4/NCO v10.0 AVin) with ESMTP id v0A2ALYc031140; Tue, 10 Jan 2017 00:10:42 -0200 From: Jose Ricardo Ziviani To: qemu-ppc@nongnu.org Date: Tue, 10 Jan 2017 00:10:13 -0200 X-Mailer: git-send-email 2.7.4 In-Reply-To: <1484014214-32533-1-git-send-email-joserz@linux.vnet.ibm.com> References: <1484014214-32533-1-git-send-email-joserz@linux.vnet.ibm.com> X-TM-AS-MML: disable X-Content-Scanned: Fidelis XPS MAILER x-cbid: 17011002-1523-0000-0000-00000267DE8E X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 17011002-1524-0000-0000-000029F51977 Message-Id: <1484014214-32533-7-git-send-email-joserz@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:, , definitions=2017-01-10_01:, , 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=8.0.1-1612050000 definitions=main-1701100027 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [generic] [fuzzy] X-Received-From: 148.163.158.5 Subject: [Qemu-devel] [PATCH v5 6/7] ppc: Implement bcdtrunc. 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" bcdtrunc.: Decimal integer truncate. Given a BCD number in vrb and the number of bytes to truncate in vra, the return register will have vrb with such bits truncated. Signed-off-by: Jose Ricardo Ziviani --- target/ppc/helper.h | 1 + target/ppc/int_helper.c | 37 +++++++++++++++++++++++++++++++++++++ target/ppc/translate/vmx-impl.inc.c | 5 +++++ target/ppc/translate/vmx-ops.inc.c | 4 ++-- 4 files changed, 45 insertions(+), 2 deletions(-) diff --git a/target/ppc/helper.h b/target/ppc/helper.h index d1db462..db17917 100644 --- a/target/ppc/helper.h +++ b/target/ppc/helper.h @@ -401,6 +401,7 @@ DEF_HELPER_3(bcdsetsgn, i32, avr, avr, i32) DEF_HELPER_4(bcds, i32, avr, avr, avr, i32) DEF_HELPER_4(bcdus, i32, avr, avr, avr, i32) DEF_HELPER_4(bcdsr, i32, avr, avr, avr, i32) +DEF_HELPER_4(bcdtrunc, i32, avr, avr, avr, i32) DEF_HELPER_2(xsadddp, void, env, i32) DEF_HELPER_2(xsaddqp, void, env, i32) diff --git a/target/ppc/int_helper.c b/target/ppc/int_helper.c index b184063..06b14d5 100644 --- a/target/ppc/int_helper.c +++ b/target/ppc/int_helper.c @@ -3223,6 +3223,43 @@ uint32_t helper_bcdsr(ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b, uint32_t ps) return cr; } +uint32_t helper_bcdtrunc(ppc_avr_t *r, ppc_avr_t *a, ppc_avr_t *b, uint32_t ps) +{ + uint64_t mask; + uint32_t ox_flag = 0; +#if defined(HOST_WORDS_BIGENDIAN) + int i = a->s16[3] + 1; +#else + int i = a->s16[4] + 1; +#endif + ppc_avr_t ret = *b; + + if (bcd_is_valid(b) == false) { + return CRF_SO; + } + + if (i > 16 && i < 32) { + if (ret.u64[HI_IDX] >> (i * 4 - 64)) { + ox_flag = CRF_SO; + } + + mask = (uint64_t)-1 >> (128 - i * 4); + ret.u64[HI_IDX] &= mask; + } else if (i >= 0 && i <= 16) { + if (ret.u64[HI_IDX] || (i < 16 && ret.u64[LO_IDX] >> (i * 4))) { + ox_flag = CRF_SO; + } + + mask = (uint64_t)-1 >> (64 - i * 4); + ret.u64[LO_IDX] &= mask; + ret.u64[HI_IDX] = 0; + } + bcd_put_digit(&ret, bcd_preferred_sgn(bcd_get_sgn(b), ps), 0); + *r = ret; + + return bcd_cmp_zero(&ret) | ox_flag; +} + 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 451abb5..1683f42 100644 --- a/target/ppc/translate/vmx-impl.inc.c +++ b/target/ppc/translate/vmx-impl.inc.c @@ -1019,6 +1019,7 @@ GEN_BCD(bcdcpsgn); GEN_BCD(bcds); GEN_BCD(bcdus); GEN_BCD(bcdsr); +GEN_BCD(bcdtrunc); static void gen_xpnd04_1(DisasContext *ctx) { @@ -1097,6 +1098,10 @@ GEN_VXFORM_DUAL(vsubudm, PPC2_ALTIVEC_207, PPC_NONE, \ bcds, PPC_NONE, PPC2_ISA300) GEN_VXFORM_DUAL(vsubuwm, PPC_ALTIVEC, PPC_NONE, \ bcdus, PPC_NONE, PPC2_ISA300) +GEN_VXFORM_DUAL(vsubsbs, PPC_ALTIVEC, PPC_NONE, \ + bcdtrunc, PPC_NONE, PPC2_ISA300) +GEN_VXFORM_DUAL(vsubuqm, PPC2_ALTIVEC_207, PPC_NONE, \ + bcdtrunc, PPC_NONE, PPC2_ISA300) static void gen_vsbox(DisasContext *ctx) { diff --git a/target/ppc/translate/vmx-ops.inc.c b/target/ppc/translate/vmx-ops.inc.c index fa9c996..e6167a4 100644 --- a/target/ppc/translate/vmx-ops.inc.c +++ b/target/ppc/translate/vmx-ops.inc.c @@ -143,14 +143,14 @@ GEN_VXFORM(vaddsws, 0, 14), GEN_VXFORM_DUAL(vsububs, bcdadd, 0, 24, PPC_ALTIVEC, PPC_NONE), GEN_VXFORM_DUAL(vsubuhs, bcdsub, 0, 25, PPC_ALTIVEC, PPC_NONE), GEN_VXFORM(vsubuws, 0, 26), -GEN_VXFORM(vsubsbs, 0, 28), +GEN_VXFORM_DUAL(vsubsbs, bcdtrunc, 0, 28, PPC_NONE, PPC2_ISA300), GEN_VXFORM(vsubshs, 0, 29), GEN_VXFORM_DUAL(vsubsws, xpnd04_2, 0, 30, PPC_ALTIVEC, PPC_NONE), GEN_VXFORM_207(vadduqm, 0, 4), GEN_VXFORM_207(vaddcuq, 0, 5), GEN_VXFORM_DUAL(vaddeuqm, vaddecuq, 30, 0xFF, PPC_NONE, PPC2_ALTIVEC_207), -GEN_VXFORM_207(vsubuqm, 0, 20), GEN_VXFORM_207(vsubcuq, 0, 21), +GEN_VXFORM_DUAL(vsubuqm, bcdtrunc, 0, 20, PPC2_ALTIVEC_207, PPC2_ISA300), GEN_VXFORM_DUAL(vsubeuqm, vsubecuq, 31, 0xFF, PPC_NONE, PPC2_ALTIVEC_207), GEN_VXFORM(vrlb, 2, 0), GEN_VXFORM(vrlh, 2, 1),