From patchwork Tue Jun 1 19:35:16 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Matheus K. Ferst" X-Patchwork-Id: 12292105 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=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT 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 98639C47080 for ; Tue, 1 Jun 2021 19:37:48 +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 4C1CF61396 for ; Tue, 1 Jun 2021 19:37:48 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 4C1CF61396 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=eldorado.org.br Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:33284 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1loACx-0004ER-Dd for qemu-devel@archiver.kernel.org; Tue, 01 Jun 2021 15:37:47 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:33304) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1loAB5-0001Ph-MC; Tue, 01 Jun 2021 15:35:51 -0400 Received: from [201.28.113.2] (port=31942 helo=outlook.eldorado.org.br) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1loAB4-0002Jl-6u; Tue, 01 Jun 2021 15:35:51 -0400 Received: from power9a ([10.10.71.235]) by outlook.eldorado.org.br with Microsoft SMTPSVC(8.5.9600.16384); Tue, 1 Jun 2021 16:35:40 -0300 Received: from eldorado.org.br (unknown [10.10.70.45]) by power9a (Postfix) with ESMTP id 5596E80148B; Tue, 1 Jun 2021 16:35:40 -0300 (-03) From: matheus.ferst@eldorado.org.br To: qemu-devel@nongnu.org, qemu-ppc@nongnu.org Subject: [PATCH v6 02/14] target/ppc: Move page crossing check to ppc_tr_translate_insn Date: Tue, 1 Jun 2021 16:35:16 -0300 Message-Id: <20210601193528.2533031-3-matheus.ferst@eldorado.org.br> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210601193528.2533031-1-matheus.ferst@eldorado.org.br> References: <20210601193528.2533031-1-matheus.ferst@eldorado.org.br> MIME-Version: 1.0 X-OriginalArrivalTime: 01 Jun 2021 19:35:40.0815 (UTC) FILETIME=[4E2FE9F0:01D7571D] X-Host-Lookup-Failed: Reverse DNS lookup failed for 201.28.113.2 (failed) Received-SPF: pass client-ip=201.28.113.2; envelope-from=matheus.ferst@eldorado.org.br; helo=outlook.eldorado.org.br X-Spam_score_int: -10 X-Spam_score: -1.1 X-Spam_bar: - X-Spam_report: (-1.1 / 5.0 requ) BAYES_00=-1.9, RDNS_NONE=0.793, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no 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: richard.henderson@linaro.org, f4bug@amsat.org, groug@kaod.org, luis.pires@eldorado.org.br, lagarcia@br.ibm.com, Matheus Ferst , david@gibson.dropbear.id.au Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" From: Richard Henderson With prefixed instructions, the number of instructions remaining until the page crossing is no longer constant. Signed-off-by: Richard Henderson Signed-off-by: Matheus Ferst --- target/ppc/translate.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/target/ppc/translate.c b/target/ppc/translate.c index 11fd3342a0..d2c9fd9dd7 100644 --- a/target/ppc/translate.c +++ b/target/ppc/translate.c @@ -8821,9 +8821,6 @@ static void ppc_tr_init_disas_context(DisasContextBase *dcbase, CPUState *cs) if (ctx->singlestep_enabled & (CPU_SINGLE_STEP | GDBSTUB_SINGLE_STEP)) { ctx->base.max_insns = 1; - } else { - int bound = -(ctx->base.pc_first | TARGET_PAGE_MASK) / 4; - ctx->base.max_insns = MIN(ctx->base.max_insns, bound); } } @@ -8874,6 +8871,12 @@ static void ppc_tr_translate_insn(DisasContextBase *dcbase, CPUState *cs) gen_invalid(ctx); } + /* End the TB when crossing a page boundary. */ + if (ctx->base.is_jmp == DISAS_NEXT && + !(ctx->base.pc_next & ~TARGET_PAGE_MASK)) { + ctx->base.is_jmp = DISAS_TOO_MANY; + } + translator_loop_temp_check(&ctx->base); }