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[173.197.98.123]) by smtp.gmail.com with ESMTPSA id v47sm9961143qtb.11.2017.07.10.13.45.48 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 10 Jul 2017 13:45:49 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=sender:from:to:cc:subject:date:message-id:in-reply-to:references; bh=/ZuI6AVHpN5j3uPZTTsBMuTiSrHbQuJe1P1pFaW3Da8=; b=Db9Vrljs6TUYYZElb2w9IyZ5+98c4zNKuvCkNxvuMIB2xudFONkvjPcTXFm1GKYMKn YTJcfn+vfX0vybcQ8XipnicBHY9j73Ly13VYhu1PDO2JRVC3WwgSriFkwY6qjbJ0MAsr aIDVYYJnPhCaeIravTNwFCSW1x3L6jqGaTQx12oVMAgCUNLNU2F+gvu3k9Zj/yuUjdIs I6rS5KIEW39KNVh3F4YGDjeVGI7Wf4WtKnoMlo5O/ITBDBBqRtJn2mDE8dKEievBZqTl UDsT4V0aaYX6jEO8JSIvrzgX1LpZmqE+4rIUYe7zhxrHw9KteKkAV5xIGNTDPgLuO05F K/pw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:from:to:cc:subject:date:message-id :in-reply-to:references; bh=/ZuI6AVHpN5j3uPZTTsBMuTiSrHbQuJe1P1pFaW3Da8=; b=Pzwx0zmmxPUfnFq0pPYYNjGmS2UIPmZwEJJL1lxFFA1laJKXq9S8MAM8xLkGADxgOb xcTC0cxn+1cIIXWn4w+yN2YkVNZbWAw+Jv9mv0dYdaPWSKqp6BvxqqKQ98TMk/oDNgVL u1iWsQcv00hWO+ZMwTr4l32qJh3eQ33+B8wbPTQ51ZrjMg2tB/Z88nmfF3lG69zoO01Q SO4HTJXrx8Eda0tVDJNzNbHNX0FAKz4EbYhYg+mjyJlo2Ka4GYzm++cTyxSQN8dwyzcT RV4hlqcnFqZxA5z643B9na3cwMJRm1X/hU2L19aQSAI42cFzFZ64ujDeoKy8KQ8avU6h 1eXA== X-Gm-Message-State: AIVw1109yjSVBdbKlr7oOyUwVkSOzx9h0fgF+VoQ6y5i/kdIjNdy1M6A WtzXdlyjPRoXPvGBx70= X-Received: by 10.55.142.67 with SMTP id q64mr6100610qkd.99.1499719550147; Mon, 10 Jul 2017 13:45:50 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Date: Mon, 10 Jul 2017 10:45:21 -1000 Message-Id: <20170710204521.2058-9-rth@twiddle.net> X-Mailer: git-send-email 2.9.4 In-Reply-To: <20170710204521.2058-1-rth@twiddle.net> References: <20170710204521.2058-1-rth@twiddle.net> X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 209.85.220.195 Subject: [Qemu-devel] [PATCH v3 8/8] target/s390x: Fix risbg handling 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: aurelien@aurel32.net, david@redhat.com Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) X-ZohoMail: RDKM_2 RSF_0 Z_629925259 SPT_0 Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" The rotation is to the left, but extract shifts to the right. The computation of the extract parameters needs adjusting. For the entry condition, simplify 64 - rot + len <=3D 64 -rot + len <=3D 0 len <=3D rot Reviewed-by: Aurelien Jarno Reported-by: David Hildenbrand Suggested-by: Aurelien Jarno Signed-off-by: Richard Henderson --- target/s390x/translate.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/target/s390x/translate.c b/target/s390x/translate.c index f94ba7c..0c609bd 100644 --- a/target/s390x/translate.c +++ b/target/s390x/translate.c @@ -3471,8 +3471,8 @@ static ExitStatus op_risbg(DisasContext *s, DisasOps = *o) } =20 /* In some cases we can implement this with extract. */ - if (imask =3D=3D 0 && pos =3D=3D 0 && len > 0 && rot + len <=3D 64) { - tcg_gen_extract_i64(o->out, o->in2, rot, len); + if (imask =3D=3D 0 && pos =3D=3D 0 && len > 0 && len <=3D rot) { + tcg_gen_extract_i64(o->out, o->in2, 64 - rot, len); return NO_EXIT; } =20 --=20 2.9.4