From patchwork Mon Apr 5 08:20:48 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Pavel Dovgalyuk X-Patchwork-Id: 12182777 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 33B70C433B4 for ; Mon, 5 Apr 2021 08:21:50 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 5CE9F61380 for ; Mon, 5 Apr 2021 08:21:49 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 5CE9F61380 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=ispras.ru Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:48766 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lTKUW-0001QV-Bi for qemu-devel@archiver.kernel.org; Mon, 05 Apr 2021 04:21:48 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:39526) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lTKTl-00011B-7r for qemu-devel@nongnu.org; Mon, 05 Apr 2021 04:21:01 -0400 Received: from mail.ispras.ru ([83.149.199.84]:55054) by eggs.gnu.org with esmtps (TLS1.2:DHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lTKTj-0000BH-8l for qemu-devel@nongnu.org; Mon, 05 Apr 2021 04:21:01 -0400 Received: from [127.0.1.1] (unknown [62.118.151.149]) by mail.ispras.ru (Postfix) with ESMTPSA id 1308D40755D3; Mon, 5 Apr 2021 08:20:49 +0000 (UTC) Subject: [PATCH] target/nios2: fix page-fit instruction count From: Pavel Dovgalyuk To: qemu-devel@nongnu.org Date: Mon, 05 Apr 2021 11:20:48 +0300 Message-ID: <161761084874.267629.6627766310804625252.stgit@pasha-ThinkPad-X280> User-Agent: StGit/0.23 MIME-Version: 1.0 Received-SPF: pass client-ip=83.149.199.84; envelope-from=pavel.dovgalyuk@ispras.ru; helo=mail.ispras.ru X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: marex@denx.de, pbonzini@redhat.com, crwulff@gmail.com, pavel.dovgalyuk@ispras.ru Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" This patch fixes calculation of number of the instructions that fit the current page. It prevents creation of the translation blocks that cross the page boundaries. It is required for deterministic exception generation in icount mode. Signed-off-by: Pavel Dovgalyuk Reviewed-by: Richard Henderson --- target/nios2/translate.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/target/nios2/translate.c b/target/nios2/translate.c index 9824544eb3..399f22d938 100644 --- a/target/nios2/translate.c +++ b/target/nios2/translate.c @@ -829,7 +829,7 @@ void gen_intermediate_code(CPUState *cs, TranslationBlock *tb, int max_insns) /* Set up instruction counts */ num_insns = 0; if (max_insns > 1) { - int page_insns = (TARGET_PAGE_SIZE - (tb->pc & TARGET_PAGE_MASK)) / 4; + int page_insns = (TARGET_PAGE_SIZE - (tb->pc & ~TARGET_PAGE_MASK)) / 4; if (max_insns > page_insns) { max_insns = page_insns; }