From nobody Thu Nov 28 08:05:18 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=linux.alibaba.com Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1694143469491880.2615336891504; Thu, 7 Sep 2023 20:24:29 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qeS6L-0003a2-Qj; Thu, 07 Sep 2023 23:24:09 -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 1qeS6K-0003Zp-Ev; Thu, 07 Sep 2023 23:24:08 -0400 Received: from out30-97.freemail.mail.aliyun.com ([115.124.30.97]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qeS6G-0002sa-N0; Thu, 07 Sep 2023 23:24:08 -0400 Received: from L-PF1D6DP4-1208.hz.ali.com(mailfrom:zhiwei_liu@linux.alibaba.com fp:SMTPD_---0VraxpoG_1694143434) by smtp.aliyun-inc.com; Fri, 08 Sep 2023 11:23:55 +0800 X-Alimail-AntiSpam: AC=PASS; BC=-1|-1; BR=01201311R121e4; CH=green; DM=||false|; DS=||; FP=0|-1|-1|-1|0|-1|-1|-1; HT=ay29a033018046060; MF=zhiwei_liu@linux.alibaba.com; NM=1; PH=DS; RN=4; SR=0; TI=SMTPD_---0VraxpoG_1694143434; From: LIU Zhiwei To: qemu-devel@nongnu.org Cc: qemu-riscv@nongnu.org, LIU Zhiwei , LIU Zhiwei Subject: [PATCH] qemu/timer: Add host ticks function for RISC-V Date: Fri, 8 Sep 2023 11:23:00 +0800 Message-Id: <20230908032300.646-1-zhiwei_liu@linux.alibaba.com> X-Mailer: git-send-email 2.23.0 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=115.124.30.97; envelope-from=zhiwei_liu@linux.alibaba.com; helo=out30-97.freemail.mail.aliyun.com X-Spam_score_int: -98 X-Spam_score: -9.9 X-Spam_bar: --------- X-Spam_report: (-9.9 / 5.0 requ) BAYES_00=-1.9, ENV_AND_HDR_SPF_MATCH=-0.5, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, UNPARSEABLE_RELAY=0.001, USER_IN_DEF_SPF_WL=-7.5 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+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZM-MESSAGEID: 1694143471182100001 Content-Type: text/plain; charset="utf-8" From: LIU Zhiwei Signed-off-by: LIU Zhiwei --- include/qemu/timer.h | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/include/qemu/timer.h b/include/qemu/timer.h index 9a91cb1248..ce0b66d122 100644 --- a/include/qemu/timer.h +++ b/include/qemu/timer.h @@ -979,6 +979,25 @@ static inline int64_t cpu_get_host_ticks(void) return cur - ofs; } =20 +#elif defined(__riscv) && defined(__riscv_xlen) && __riscv_xlen =3D=3D 32 +static inline int64_t cpu_get_host_ticks(void) +{ + uint32_t lo, hi; + asm volatile("RDCYCLE %0\n\t" + "RDCYCLEH %1" + : "=3Dr"(lo), "=3Dr"(hi)); + return lo | (uint64_t)hi << 32; +} + +#elif defined(__riscv) && defined(__riscv_xlen) && __riscv_xlen > 32 +static inline int64_t cpu_get_host_ticks(void) +{ + int64_t val; + + asm volatile("RDCYCLE %0" : "=3Dr"(cc)); + return val; +} + #else /* The host CPU doesn't have an easily accessible cycle counter. Just return a monotonically increasing value. This will be --=20 2.17.1