From patchwork Sun Apr 9 10:52:59 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Weiwei Li X-Patchwork-Id: 13205928 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 25CE8C77B70 for ; Sun, 9 Apr 2023 10:54:16 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1plSfw-0000El-QM; Sun, 09 Apr 2023 06:53:36 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1plSfp-0000AU-GH; Sun, 09 Apr 2023 06:53:30 -0400 Received: from smtp25.cstnet.cn ([159.226.251.25] helo=cstnet.cn) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1plSfl-0002XQ-EE; Sun, 09 Apr 2023 06:53:28 -0400 Received: from localhost.localdomain (unknown [180.175.29.170]) by APP-05 (Coremail) with SMTP id zQCowAAHHhYUmTJkVyANEA--.55439S2; Sun, 09 Apr 2023 18:53:09 +0800 (CST) From: Weiwei Li To: qemu-riscv@nongnu.org, qemu-devel@nongnu.org Cc: palmer@dabbelt.com, alistair.francis@wdc.com, bin.meng@windriver.com, dbarboza@ventanamicro.com, zhiwei_liu@linux.alibaba.com, wangjunqiang@iscas.ac.cn, lazyparser@gmail.com, Weiwei Li Subject: [PATCH 0/7] target/riscv: Add support for PC-relative translation Date: Sun, 9 Apr 2023 18:52:59 +0800 Message-Id: <20230409105306.28575-1-liweiwei@iscas.ac.cn> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 X-CM-TRANSID: zQCowAAHHhYUmTJkVyANEA--.55439S2 X-Coremail-Antispam: 1UD129KBjvJXoW7urykWF4ftw4fGr48XrW5Jrb_yoW8Gr45pr WrK3yxCrZ8trWfAw4fXF4DAry5GF4rWrWkA3Z2ywn3Jw4YyrW5Jr9rK34fKrsrJFy8Xr1q k3WUCw43ur45ArJanT9S1TB71UUUUUUqnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDU0xBIdaVrnRJUUUv014x267AKxVW8JVW5JwAFc2x0x2IEx4CE42xK8VAvwI8IcIk0 rVWrJVCq3wAFIxvE14AKwVWUJVWUGwA2ocxC64kIII0Yj41l84x0c7CEw4AK67xGY2AK02 1l84ACjcxK6xIIjxv20xvE14v26r1j6r1xM28EF7xvwVC0I7IYx2IY6xkF7I0E14v26r4j 6F4UM28EF7xvwVC2z280aVAFwI0_Gr1j6F4UJwA2z4x0Y4vEx4A2jsIEc7CjxVAFwI0_Gr 1j6F4UJwAS0I0E0xvYzxvE52x082IY62kv0487Mc02F40EFcxC0VAKzVAqx4xG6I80ewAv 7VC0I7IYx2IY67AKxVWUJVWUGwAv7VC2z280aVAFwI0_Jr0_Gr1lOx8S6xCaFVCjc4AY6r 1j6r4UM4x0Y48IcxkI7VAKI48JM4x0x7Aq67IIx4CEVc8vx2IErcIFxwACI402YVCY1x02 628vn2kIc2xKxwCF04k20xvY0x0EwIxGrwCFx2IqxVCFs4IE7xkEbVWUJVW8JwC20s026c 02F40E14v26r1j6r18MI8I3I0E7480Y4vE14v26r106r1rMI8E67AF67kF1VAFwI0_Jw0_ GFylIxkGc2Ij64vIr41lIxAIcVC0I7IYx2IY67AKxVWUJVWUCwCI42IY6xIIjxv20xvEc7 CjxVAFwI0_Jr0_Gr1lIxAIcVCF04k26cxKx2IYs7xG6r1j6r1xMIIF0xvEx4A2jsIE14v2 6r1j6r4UMIIF0xvEx4A2jsIEc7CjxVAFwI0_Jr0_GrUvcSsGvfC2KfnxnUUI43ZEXa7VUb XdbUUUUUU== X-Originating-IP: [180.175.29.170] X-CM-SenderInfo: 5olzvxxzhlqxpvfd2hldfou0/ Received-SPF: pass client-ip=159.226.251.25; envelope-from=liweiwei@iscas.ac.cn; helo=cstnet.cn X-Spam_score_int: -41 X-Spam_score: -4.2 X-Spam_bar: ---- X-Spam_report: (-4.2 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, SPF_HELO_PASS=-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: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org This patchset tries to add support for PC-relative translation. The existence of CF_PCREL can improve performance with the guest kernel's address space randomization. Each guest process maps libc.so (et al) at a different virtual address, and this allows those translations to be shared. And support of PC-relative translation is the precondition to support pointer mask for instruction. The port is available here: https://github.com/plctlab/plct-qemu/tree/plct-pcrel-upstream Weiwei Li (7): target/riscv: Fix target address to update badaddr target/riscv: Introduce cur_insn_len into DisasContext target/riscv: Change gen_goto_tb to work on displacements target/riscv: Change gen_set_pc_imm to gen_update_pc target/riscv: Use true diff for gen_pc_plus_diff target/riscv: Enable PC-relative translation target/riscv: Remove pc_succ_insn from DisasContext target/riscv/cpu.c | 31 +++++-- .../riscv/insn_trans/trans_privileged.c.inc | 2 +- target/riscv/insn_trans/trans_rvi.c.inc | 43 ++++++--- target/riscv/insn_trans/trans_rvv.c.inc | 4 +- target/riscv/insn_trans/trans_rvzawrs.c.inc | 2 +- target/riscv/insn_trans/trans_xthead.c.inc | 2 +- target/riscv/translate.c | 92 +++++++++++++------ 7 files changed, 117 insertions(+), 59 deletions(-)