From patchwork Tue Nov 1 15:24:46 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: 9407511 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 91F15600C8 for ; Tue, 1 Nov 2016 15:29:43 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 8421B299EF for ; Tue, 1 Nov 2016 15:29:43 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 78532299F4; Tue, 1 Nov 2016 15:29:43 +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 189EF299EF for ; Tue, 1 Nov 2016 15:29:43 +0000 (UTC) Received: from localhost ([::1]:48582 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1c1b0Q-0008HR-Bm for patchwork-qemu-devel@patchwork.kernel.org; Tue, 01 Nov 2016 11:29:42 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:44854) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1c1awk-0005d1-8z for qemu-devel@nongnu.org; Tue, 01 Nov 2016 11:25:59 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1c1awg-0003wO-6V for qemu-devel@nongnu.org; Tue, 01 Nov 2016 11:25:54 -0400 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:35664) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1c1awf-0003wA-TU for qemu-devel@nongnu.org; Tue, 01 Nov 2016 11:25:50 -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 uA1FNf27114233 for ; Tue, 1 Nov 2016 11:25:49 -0400 Received: from e24smtp01.br.ibm.com (e24smtp01.br.ibm.com [32.104.18.85]) by mx0a-001b2d01.pphosted.com with ESMTP id 26ewn8g620-1 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=NOT) for ; Tue, 01 Nov 2016 11:25:48 -0400 Received: from localhost by e24smtp01.br.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Tue, 1 Nov 2016 13:25:45 -0200 Received: from d24dlp01.br.ibm.com (9.18.248.204) by e24smtp01.br.ibm.com (10.172.0.143) with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted; Tue, 1 Nov 2016 13:25:05 -0200 Received: from d24relay04.br.ibm.com (d24relay04.br.ibm.com [9.18.232.146]) by d24dlp01.br.ibm.com (Postfix) with ESMTP id 158C23520068; Tue, 1 Nov 2016 11:24:35 -0400 (EDT) Received: from d24av01.br.ibm.com (d24av01.br.ibm.com [9.8.31.91]) by d24relay04.br.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id uA1FP2gA39125224; Tue, 1 Nov 2016 13:25:02 -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 uA1FP2PU006938; Tue, 1 Nov 2016 13:25:02 -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 uA1FOpNI006668; Tue, 1 Nov 2016 13:24:58 -0200 From: Jose Ricardo Ziviani To: qemu-ppc@nongnu.org Date: Tue, 1 Nov 2016 13:24:46 -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: 16110115-1523-0000-0000-000002421121 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 16110115-1524-0000-0000-0000299DF422 Message-Id: <1478013888-22242-3-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 2/4] target-ppc: Implement bcdctn. 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 bcdctn. converts from BCD to National numeric format. National format uses a byte to represent a digit where the most significant nibble is always 0x3 and the least sign. nibbles is the digit itself. Signed-off-by: Jose Ricardo Ziviani --- target-ppc/helper.h | 1 + target-ppc/int_helper.c | 48 +++++++++++++++++++++++++++++++++++++ target-ppc/translate/vmx-impl.inc.c | 4 ++++ 3 files changed, 53 insertions(+) diff --git a/target-ppc/helper.h b/target-ppc/helper.h index 3b23eed..33286c6 100644 --- a/target-ppc/helper.h +++ b/target-ppc/helper.h @@ -372,6 +372,7 @@ DEF_HELPER_4(vpermxor, void, avr, avr, avr, avr) 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_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 605cfc7..3c21173 100644 --- a/target-ppc/int_helper.c +++ b/target-ppc/int_helper.c @@ -2515,6 +2515,15 @@ static uint16_t get_national_digit(ppc_avr_t *reg, int n) #endif } +static void set_national_digit(ppc_avr_t *reg, uint8_t val, int n) +{ +#if defined(HOST_WORDS_BIGENDIAN) + reg->u16[8 - n] = val; +#else + reg->u16[n] = val; +#endif +} + static int bcd_cmp_mag(ppc_avr_t *a, ppc_avr_t *b) { int i; @@ -2681,6 +2690,45 @@ uint32_t helper_bcdcfn(ppc_avr_t *r, ppc_avr_t *b, uint32_t ps) return cr; } +uint32_t helper_bcdctn(ppc_avr_t *r, ppc_avr_t *b, uint32_t ps) +{ + int i; + int cr = 0; + int sgnb = bcd_get_sgn(b); + 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] != 0) || ((b->u64[LO_IDX] >> 32) != 0); + + for (i = 1; i < 8; i++) { + set_national_digit(&ret, 0x30 + bcd_get_digit(b, i, &invalid), i); + + if (unlikely(invalid)) { + break; + } + } + set_national_digit(&ret, (sgnb == -1) ? NATIONAL_NEG : NATIONAL_PLUS, 0); + + if (!eq_flag) { + cr = (sgnb == -1) ? 1 << CRF_LT : 1 << CRF_GT; + } 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 50abfaf..d5953a6 100644 --- a/target-ppc/translate/vmx-impl.inc.c +++ b/target-ppc/translate/vmx-impl.inc.c @@ -971,10 +971,14 @@ static void gen_##op(DisasContext *ctx) \ GEN_BCD(bcdadd) GEN_BCD(bcdsub) GEN_BCD2(bcdcfn) +GEN_BCD2(bcdctn) static void gen_xpnd04_1(DisasContext *ctx) { switch (opc4(ctx->opcode)) { + case 5: + gen_bcdctn(ctx); + break; case 7: gen_bcdcfn(ctx); break;