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Violators will be prosecuted; Mon, 27 Feb 2017 10:28:16 +0530 Received: from d28relay08.in.ibm.com (d28relay08.in.ibm.com [9.184.220.159]) by d28dlp03.in.ibm.com (Postfix) with ESMTP id E17BB125805B; Mon, 27 Feb 2017 10:28:25 +0530 (IST) Received: from d28av04.in.ibm.com (d28av04.in.ibm.com [9.184.220.66]) by d28relay08.in.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id v1R4vAXU11665556; Mon, 27 Feb 2017 10:27:10 +0530 Received: from d28av04.in.ibm.com (localhost [127.0.0.1]) by d28av04.in.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id v1R4wDRM005343; Mon, 27 Feb 2017 10:28:14 +0530 Received: from abhimanyu.in.ibm.com (abhimanyu.in.ibm.com [9.124.35.170]) by d28av04.in.ibm.com (8.14.4/8.14.4/NCO v10.0 AVin) with ESMTP id v1R4wC03005260; Mon, 27 Feb 2017 10:28:13 +0530 From: Nikunj A Dadhania To: qemu-ppc@nongnu.org, david@gibson.dropbear.id.au, rth@twiddle.net Date: Mon, 27 Feb 2017 10:28:00 +0530 X-Mailer: git-send-email 2.7.4 In-Reply-To: <1488171481-21699-1-git-send-email-nikunj@linux.vnet.ibm.com> References: <1488171481-21699-1-git-send-email-nikunj@linux.vnet.ibm.com> X-TM-AS-MML: disable X-Content-Scanned: Fidelis XPS MAILER x-cbid: 17022704-0004-0000-0000-00000544149B X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 17022704-0005-0000-0000-0000133E2EE2 Message-Id: <1488171481-21699-8-git-send-email-nikunj@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:, , definitions=2017-02-27_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-1702270049 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 v6 7/8] target/ppc: add ov32 flag in divide operations 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+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP Add helper_div_compute_ov() in the int_helper for updating the overflow flags. For Divide Word: SO, OV, and OV32 bits reflects overflow of the 32-bit result For Divide DoubleWord: SO, OV, and OV32 bits reflects overflow of the 64-bit result Signed-off-by: Nikunj A Dadhania Reviewed-by: Richard Henderson --- target/ppc/translate.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/target/ppc/translate.c b/target/ppc/translate.c index ccf3bff..982e66f 100644 --- a/target/ppc/translate.c +++ b/target/ppc/translate.c @@ -1021,6 +1021,9 @@ static inline void gen_op_arith_divw(DisasContext *ctx, TCGv ret, TCGv arg1, } if (compute_ov) { tcg_gen_extu_i32_tl(cpu_ov, t2); + if (is_isa300(ctx)) { + tcg_gen_extu_i32_tl(cpu_ov32, t2); + } tcg_gen_or_tl(cpu_so, cpu_so, cpu_ov); } tcg_temp_free_i32(t0); @@ -1092,6 +1095,9 @@ static inline void gen_op_arith_divd(DisasContext *ctx, TCGv ret, TCGv arg1, } if (compute_ov) { tcg_gen_mov_tl(cpu_ov, t2); + if (is_isa300(ctx)) { + tcg_gen_mov_tl(cpu_ov32, t2); + } tcg_gen_or_tl(cpu_so, cpu_so, cpu_ov); } tcg_temp_free_i64(t0); @@ -1110,10 +1116,10 @@ static void glue(gen_, name)(DisasContext *ctx) cpu_gpr[rA(ctx->opcode)], cpu_gpr[rB(ctx->opcode)], \ sign, compute_ov); \ } -/* divwu divwu. divwuo divwuo. */ +/* divdu divdu. divduo divduo. */ GEN_INT_ARITH_DIVD(divdu, 0x0E, 0, 0); GEN_INT_ARITH_DIVD(divduo, 0x1E, 0, 1); -/* divw divw. divwo divwo. */ +/* divd divd. divdo divdo. */ GEN_INT_ARITH_DIVD(divd, 0x0F, 1, 0); GEN_INT_ARITH_DIVD(divdo, 0x1F, 1, 1);