From patchwork Thu Mar 30 13:58:17 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Weiwei Li X-Patchwork-Id: 13194209 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 8258FC6FD1D for ; Thu, 30 Mar 2023 13:59:38 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1phsnV-0004Ku-Dq; Thu, 30 Mar 2023 09:58:37 -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 1phsnR-0004JG-TV; Thu, 30 Mar 2023 09:58:33 -0400 Received: from smtp80.cstnet.cn ([159.226.251.80] helo=cstnet.cn) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1phsnP-0007Nt-8T; Thu, 30 Mar 2023 09:58:33 -0400 Received: from localhost.localdomain (unknown [180.175.29.170]) by APP-01 (Coremail) with SMTP id qwCowADn70t9lSVkTm4HGQ--.46385S3; Thu, 30 Mar 2023 21:58:22 +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 1/2] target/riscv: Fix the mstatus.MPP value after executing MRET Date: Thu, 30 Mar 2023 21:58:17 +0800 Message-Id: <20230330135818.68417-2-liweiwei@iscas.ac.cn> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230330135818.68417-1-liweiwei@iscas.ac.cn> References: <20230330135818.68417-1-liweiwei@iscas.ac.cn> MIME-Version: 1.0 X-CM-TRANSID: qwCowADn70t9lSVkTm4HGQ--.46385S3 X-Coremail-Antispam: 1UD129KBjvdXoWrKrW5AF1fZw47JryrAr43Wrg_yoWDAFcE9r y09Fykur18W3WIyFZ5Ar1rGry7WFykXF12kw42kry3ua40g3Wfuw1UWF1rGw1Uur4DWws3 Cwnav34akF17ZjkaLaAFLSUrUUUUUb8apTn2vfkv8UJUUUU8Yxn0WfASr-VFAUDa7-sFnT 9fnUUIcSsGvfJTRUUUb6kFF20E14v26ryj6rWUM7CY07I20VC2zVCF04k26cxKx2IYs7xG 6rWj6s0DM7CIcVAFz4kK6r1j6r18M28IrcIa0xkI8VA2jI8067AKxVWUGwA2048vs2IY02 0Ec7CjxVAFwI0_JFI_Gr1l8cAvFVAK0II2c7xJM28CjxkF64kEwVA0rcxSw2x7M28EF7xv wVC0I7IYx2IY67AKxVWUJVWUCwA2z4x0Y4vE2Ix0cI8IcVCY1x0267AKxVW8JVWxJwA2z4 x0Y4vEx4A2jsIE14v26F4UJVW0owA2z4x0Y4vEx4A2jsIEc7CjxVAFwI0_GcCE3s1le2I2 62IYc4CY6c8Ij28IcVAaY2xG8wAqx4xG64xvF2IEw4CE5I8CrVC2j2WlYx0E2Ix0cI8IcV AFwI0_Jr0_Jr4lYx0Ex4A2jsIE14v26r1j6r4UMcvjeVCFs4IE7xkEbVWUJVW8JwACjcxG 0xvY0x0EwIxGrwACjI8F5VA0II8E6IAqYI8I648v4I1lFIxGxcIEc7CjxVA2Y2ka0xkIwI 1l42xK82IYc2Ij64vIr41l4I8I3I0E4IkC6x0Yz7v_Jr0_Gr1lx2IqxVAqx4xG67AKxVWU JVWUGwC20s026x8GjcxK67AKxVWUGVWUWwC2zVAF1VAY17CE14v26r1q6r43MIIYrxkI7V AKI48JMIIF0xvE2Ix0cI8IcVAFwI0_Jr0_JF4lIxAIcVC0I7IYx2IY6xkF7I0E14v26r4j 6F4UMIIF0xvE42xK8VAvwI8IcIk0rVWUJVWUCwCI42IY6I8E87Iv67AKxVWUJVW8JwCI42 IY6I8E87Iv6xkF7I0E14v26r4j6r4UJbIYCTnIWIevJa73UjIFyTuYvjfU5SoXUUUUU X-Originating-IP: [180.175.29.170] X-CM-SenderInfo: 5olzvxxzhlqxpvfd2hldfou0/ Received-SPF: pass client-ip=159.226.251.80; envelope-from=liweiwei@iscas.ac.cn; helo=cstnet.cn 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, RCVD_IN_MSPIKE_H2=-0.001, 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 The MPP will be set to the least-privileged supported mode (U if U-mode is implemented, else M). Signed-off-by: Weiwei Li Signed-off-by: Junqiang Wang Reviewed-by: Alistair Francis --- target/riscv/op_helper.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/target/riscv/op_helper.c b/target/riscv/op_helper.c index 84ee018f7d..991f06d98d 100644 --- a/target/riscv/op_helper.c +++ b/target/riscv/op_helper.c @@ -339,7 +339,8 @@ target_ulong helper_mret(CPURISCVState *env) mstatus = set_field(mstatus, MSTATUS_MIE, get_field(mstatus, MSTATUS_MPIE)); mstatus = set_field(mstatus, MSTATUS_MPIE, 1); - mstatus = set_field(mstatus, MSTATUS_MPP, PRV_U); + mstatus = set_field(mstatus, MSTATUS_MPP, + riscv_has_ext(env, RVU) ? PRV_U : PRV_M); mstatus = set_field(mstatus, MSTATUS_MPV, 0); if ((env->priv_ver >= PRIV_VERSION_1_12_0) && (prev_priv != PRV_M)) { mstatus = set_field(mstatus, MSTATUS_MPRV, 0);