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Violators will be prosecuted; Fri, 24 Feb 2017 11:16:51 +0530 Received: from d28relay08.in.ibm.com (d28relay08.in.ibm.com [9.184.220.159]) by d28dlp03.in.ibm.com (Postfix) with ESMTP id C3679125805B; Fri, 24 Feb 2017 11:16:59 +0530 (IST) Received: from d28av06.in.ibm.com (d28av06.in.ibm.com [9.184.220.48]) by d28relay08.in.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id v1O5jlEI11730968; Fri, 24 Feb 2017 11:15:47 +0530 Received: from d28av06.in.ibm.com (localhost [127.0.0.1]) by d28av06.in.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id v1O5knZN028023; Fri, 24 Feb 2017 11:16:50 +0530 Received: from abhimanyu.in.ibm.com ([9.102.3.187]) by d28av06.in.ibm.com (8.14.4/8.14.4/NCO v10.0 AVin) with ESMTP id v1O5kkQq027978; Fri, 24 Feb 2017 11:16:49 +0530 From: Nikunj A Dadhania To: qemu-ppc@nongnu.org, david@gibson.dropbear.id.au, rth@twiddle.net Date: Fri, 24 Feb 2017 11:16:40 +0530 X-Mailer: git-send-email 2.7.4 In-Reply-To: <1487915204-23189-1-git-send-email-nikunj@linux.vnet.ibm.com> References: <1487915204-23189-1-git-send-email-nikunj@linux.vnet.ibm.com> X-TM-AS-MML: disable x-cbid: 17022405-7323-0000-0000-000000CAE46A X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 17022405-7324-0000-0000-0000026CECCE Message-Id: <1487915204-23189-5-git-send-email-nikunj@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:, , definitions=2017-02-24_03:, , signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 suspectscore=2 malwarescore=0 phishscore=0 adultscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1612050000 definitions=main-1702240059 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 4/8] target/ppc: update overflow flags for add/sub 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: qemu-devel@nongnu.org, nikunj@linux.vnet.ibm.com, bharata@linux.vnet.ibm.com Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail: RSF_0 Z_629925259 SPT_0 Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" * SO and OV reflects overflow of the 64-bit result in 64-bit mode and overflow of the low-order 32-bit result in 32-bit mode * OV32 reflects overflow of the low-order 32-bit independent of the mode Signed-off-by: Nikunj A Dadhania --- target/ppc/translate.c | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) diff --git a/target/ppc/translate.c b/target/ppc/translate.c index e083082..16f422f 100644 --- a/target/ppc/translate.c +++ b/target/ppc/translate.c @@ -810,9 +810,16 @@ static inline void gen_op_arith_compute_ov(DisasContex= t *ctx, TCGv arg0, } tcg_temp_free(t0); if (NARROW_MODE(ctx)) { - tcg_gen_ext32s_tl(cpu_ov, cpu_ov); + tcg_gen_extract_tl(cpu_ov, cpu_ov, 31, 1); + if (is_isa300(ctx)) { + tcg_gen_mov_tl(cpu_ov32, cpu_ov); + } + } else { + if (is_isa300(ctx)) { + tcg_gen_extract_tl(cpu_ov32, cpu_ov, 31, 1); + } + tcg_gen_extract_tl(cpu_ov, cpu_ov, 63, 1); } - tcg_gen_shri_tl(cpu_ov, cpu_ov, TARGET_LONG_BITS - 1); tcg_gen_or_tl(cpu_so, cpu_so, cpu_ov); } =20 --=20 2.7.4