From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:57031) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cgVMP-0000Rs-Rh for qemu-devel@nongnu.org; Wed, 22 Feb 2017 06:45:34 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1cgVMK-0003cb-UB for qemu-devel@nongnu.org; Wed, 22 Feb 2017 06:45:29 -0500 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:55846) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1cgVMK-0003c7-Ks for qemu-devel@nongnu.org; Wed, 22 Feb 2017 06:45:24 -0500 Received: from pps.filterd (m0098396.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.20/8.16.0.20) with SMTP id v1MBiDo8125503 for ; Wed, 22 Feb 2017 06:45:23 -0500 Received: from e28smtp05.in.ibm.com (e28smtp05.in.ibm.com [125.16.236.5]) by mx0a-001b2d01.pphosted.com with ESMTP id 28s7ww5kpu-1 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=NOT) for ; Wed, 22 Feb 2017 06:45:23 -0500 Received: from localhost by e28smtp05.in.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Wed, 22 Feb 2017 17:15:20 +0530 From: Nikunj A Dadhania Date: Wed, 22 Feb 2017 17:14:39 +0530 In-Reply-To: <1487763883-4877-1-git-send-email-nikunj@linux.vnet.ibm.com> References: <1487763883-4877-1-git-send-email-nikunj@linux.vnet.ibm.com> Message-Id: <1487763883-4877-7-git-send-email-nikunj@linux.vnet.ibm.com> Subject: [Qemu-devel] [PATCH v3 06/10] target/ppc: update overflow flags for add/sub List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-ppc@nongnu.org, david@gibson.dropbear.id.au, rth@twiddle.net Cc: qemu-devel@nongnu.org, bharata@linux.vnet.ibm.com, nikunj@linux.vnet.ibm.com * 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 | 15 ++++++++++++--- 1 file changed, 12 insertions(+), 3 deletions(-) diff --git a/target/ppc/translate.c b/target/ppc/translate.c index f3f92aa..43366e7 100644 --- a/target/ppc/translate.c +++ b/target/ppc/translate.c @@ -809,10 +809,19 @@ static inline void gen_op_arith_compute_ov(DisasContext *ctx, TCGv arg0, tcg_gen_andc_tl(cpu_ov, cpu_ov, t0); } tcg_temp_free(t0); - if (NARROW_MODE(ctx)) { - tcg_gen_ext32s_tl(cpu_ov, cpu_ov); + if (is_isa300(ctx)) { + tcg_gen_extract_tl(cpu_ov32, cpu_ov, 31, 1); + if (NARROW_MODE(ctx)) { + tcg_gen_mov_tl(cpu_ov, cpu_ov32); + } else { + tcg_gen_extract_tl(cpu_ov, cpu_ov, 63, 1); + } + } else { + if (NARROW_MODE(ctx)) { + tcg_gen_ext32s_tl(cpu_ov, cpu_ov); + } + tcg_gen_shri_tl(cpu_ov, cpu_ov, TARGET_LONG_BITS - 1); } - tcg_gen_shri_tl(cpu_ov, cpu_ov, TARGET_LONG_BITS - 1); tcg_gen_or_tl(cpu_so, cpu_so, cpu_ov); } -- 2.7.4