From patchwork Fri Dec 10 07:55:52 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Frank Chang X-Patchwork-Id: 1566315 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: bilbo.ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=sifive.com header.i=@sifive.com header.a=rsa-sha256 header.s=google header.b=UFkIMU3u; dkim-atps=neutral Authentication-Results: ozlabs.org; spf=permerror (SPF Permanent Error: redirect domain has no SPF record: gnu.org) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) 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 bilbo.ozlabs.org (Postfix) with ESMTPS id 4J9Nhy0brnz9sCD for ; Fri, 10 Dec 2021 19:04:16 +1100 (AEDT) Received: from localhost ([::1]:40510 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mvat3-0002cf-9p for incoming@patchwork.ozlabs.org; Fri, 10 Dec 2021 03:04:13 -0500 Received: from eggs.gnu.org ([209.51.188.92]:59950) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mvaml-0003ga-1M for qemu-devel@nongnu.org; Fri, 10 Dec 2021 02:57:43 -0500 Received: from [2607:f8b0:4864:20::433] (port=34648 helo=mail-pf1-x433.google.com) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1mvamj-0006EX-Cd for qemu-devel@nongnu.org; Fri, 10 Dec 2021 02:57:42 -0500 Received: by mail-pf1-x433.google.com with SMTP id r130so7805208pfc.1 for ; Thu, 09 Dec 2021 23:57:41 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sifive.com; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=diu+b8Fx5MRcfuwh61M+1YLyx5mhOpAPn3HlKZcEPh4=; b=UFkIMU3ucDeAf1n3sq/F8gPANnfFYUB7clnqvjap7Lft7PFxzGQajKJI6Gsd6pKgEN PDkVT7XIseo5VkPDk/IqtNOY9qLFMG8BqOzfhSZZAb7tYyThnWNAkdUXVPVG+U0wfhDq NpIC5iCQdFDEplI++aCGn9Msp0ObSaa6A7Ee3lyo5YxPsnb7EMPETUKlbw2lF4BJ5EdY 1yNXXcDEotSeUIRUdg2ztAclq1BhlhYQioSd2JU9aPyeLJxd6PFhBeqQXMml+m4meOWD lc3HHSttmv0cubgAgNBb+H/u/pEBPY9RQQfgZGlstIHWkYH+akQ+UB7Y9jWGKdUrE4Ha avRQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=diu+b8Fx5MRcfuwh61M+1YLyx5mhOpAPn3HlKZcEPh4=; b=6I5Nyxp+PV2oA/A+DWJbYoSaB7F+6ZvTEX7NuheLlt2vi34ZeJTXzDWJgC/9QIuItj R6TYLYY/tpwPAkj7hXggQs2xQbQLmkwk/QOQpDD1WFhuxNHCEDYT0I1laDVxPhbAz59z r+7Z90dpDnKHB94nKYzzCvSPXOcgzHf3SA5886viwjLK6vMFg8vRSgkptakXGX9BeDPL wh6WeExRod9Jq8ia90aKTzL/TJPAxfFWQkx998BYcpVLUaCsjwTlYpZMhugOel/BS9i8 961KtZDRKP7cP57Bxd8ygGRBF9Cs5E2lc2qD5RLyM4cbN7k/d725HThTSpyDQKzFb5zj uqFw== X-Gm-Message-State: AOAM531hYAF1SeMRV95cm7T1b8SQUJZSB9Je/Uupazqqt1AoOaHPwZRD TSfzwmeeS1eOtcdsdXzXUvYj5cJniKWrINJo X-Google-Smtp-Source: ABdhPJyjsqvt5uPwila/ZdqUvAQAUTJ3x5cPMQ8IoaxcsH6azwT1LFWOmE7b0U7LcQq/BUXxcpl89Q== X-Received: by 2002:a65:5c47:: with SMTP id v7mr38305827pgr.64.1639123060088; Thu, 09 Dec 2021 23:57:40 -0800 (PST) Received: from hsinchu16.internal.sifive.com (59-124-168-89.hinet-ip.hinet.net. [59.124.168.89]) by smtp.gmail.com with ESMTPSA id f4sm2087955pfg.34.2021.12.09.23.57.38 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 09 Dec 2021 23:57:39 -0800 (PST) From: frank.chang@sifive.com To: qemu-devel@nongnu.org Subject: [PATCH v11 06/77] target/riscv: rvv-1.0: introduce writable misa.v field Date: Fri, 10 Dec 2021 15:55:52 +0800 Message-Id: <20211210075704.23951-7-frank.chang@sifive.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20211210075704.23951-1-frank.chang@sifive.com> References: <20211210075704.23951-1-frank.chang@sifive.com> MIME-Version: 1.0 X-Host-Lookup-Failed: Reverse DNS lookup failed for 2607:f8b0:4864:20::433 (failed) Received-SPF: pass client-ip=2607:f8b0:4864:20::433; envelope-from=frank.chang@sifive.com; helo=mail-pf1-x433.google.com X-Spam_score_int: -12 X-Spam_score: -1.3 X-Spam_bar: - X-Spam_report: (-1.3 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, 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: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: qemu-riscv@nongnu.org, Frank Chang , Bin Meng , Richard Henderson , Alistair Francis , Palmer Dabbelt Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" From: Frank Chang Implementations may have a writable misa.v field. Analogous to the way in which the floating-point unit is handled, the mstatus.vs field may exist even if misa.v is clear. Signed-off-by: Frank Chang Reviewed-by: Richard Henderson Reviewed-by: Alistair Francis --- target/riscv/csr.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/target/riscv/csr.c b/target/riscv/csr.c index 83f4dbd824..bc149add6c 100644 --- a/target/riscv/csr.c +++ b/target/riscv/csr.c @@ -643,7 +643,7 @@ static RISCVException write_misa(CPURISCVState *env, int csrno, val &= env->misa_ext_mask; /* Mask extensions that are not supported by QEMU */ - val &= (RVI | RVE | RVM | RVA | RVF | RVD | RVC | RVS | RVU); + val &= (RVI | RVE | RVM | RVA | RVF | RVD | RVC | RVS | RVU | RVV); /* 'D' depends on 'F', so clear 'D' if 'F' is not present */ if ((val & RVD) && !(val & RVF)) {