From patchwork Tue Oct 8 22:49:52 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Deepak Gupta X-Patchwork-Id: 13827159 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 11678CF042B for ; Tue, 8 Oct 2024 22:51:42 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1syJ27-0000BS-JG; Tue, 08 Oct 2024 18:50:23 -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 1syJ24-000099-Pq for qemu-devel@nongnu.org; Tue, 08 Oct 2024 18:50:20 -0400 Received: from mail-pl1-x62a.google.com ([2607:f8b0:4864:20::62a]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1syJ22-0003tW-Bu for qemu-devel@nongnu.org; Tue, 08 Oct 2024 18:50:20 -0400 Received: by mail-pl1-x62a.google.com with SMTP id d9443c01a7336-20ba8d92af9so47261965ad.3 for ; Tue, 08 Oct 2024 15:50:18 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=rivosinc-com.20230601.gappssmtp.com; s=20230601; t=1728427817; x=1729032617; darn=nongnu.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=AAmFNgO6MN8uMyYd2N3W1c951PV1oQBhf1Qm4FKEhUY=; b=qe2MqT4X391lItD04MRIMz1oXgvWicclSEBD2dksfz5uAVhxrwMXNkCDVRVLzqGCvi kqXSt+kytMZsAbvoPbsOEW8vDYLk6Eee06oOUnvUET8/N/R50Ll6wJYUrP5nYIbzuHBF zupyitckRsYq474cN7yqytZu2/NsWrlViLiD06D7Pm4LgXapHaRFi06fB8AMUmRCHyPY ayuINmooHnoqv2QxQm81H9kz+IFVjqhwDhyLT2YB5NArAC1hzMsrFKLyxPgJ+/vjvpKx lTRIhgDCBY6GjeLCW+E/UR0UdvwPbuoPKB/Z3NoC7Y26wQgnExuWfnYSNQX5Mdsd/CrC N+1w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1728427817; x=1729032617; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=AAmFNgO6MN8uMyYd2N3W1c951PV1oQBhf1Qm4FKEhUY=; b=YMIwBi/HS3vOz7kehh0Y6n1uHIanyBpRQlY+pmOTgnrermbBgyjQ9hM2QVwsCH/LhW 7QkBfEcELT2pKJThOusN9AaVRK8BWAwn6PJzH6HqC//oVo4Jl6/0HuxPVkuQAXDGH4gb aJ6AkuUYRZADLrH2b98QLhv1VJkxy8xkBEB7gIDgn9kge2mRccvyikFzP/65Ll/vMFrC uwcBymnV2QK7yEAmSTqrvgJMqgBEezGd2uIHYMEf/6sNYr/PjyN6TjY8N2ik1JP4F5d3 W2U/ks2iwIW2wSAee2wH3kpQnUrqk7O23YDy8kJrzjQKvJuiVHMjhYz3iNGoNmNQQ0Qm g8sg== X-Forwarded-Encrypted: i=1; AJvYcCVDmJHHcNQGqG/CZeYRQFCsAoD8hNed+RiFwgQQMSBj4AdNvUqBespLBRwBdDgnZ1pMXpc6jz07WtNM@nongnu.org X-Gm-Message-State: AOJu0YzLTupZHvV4IWvOiqo8zt8PHjPSUgjOJ5VaZn+OVlqAwWpOmGvw ZfxrRKpTqDryVnnEPbL7P/+TESbZIWw2olE2EZW8FzKXtRQ+cAXp/61DAkKUHyc= X-Google-Smtp-Source: AGHT+IFhs6BG4FoBv+kIQ+AzxyBrkdBv04LvbrJLbF/iK7Leb/it6wHus/0MDHIZGgmBOD5zlKJOsQ== X-Received: by 2002:a17:902:fc44:b0:20b:b21e:db21 with SMTP id d9443c01a7336-20c6377fd21mr8194515ad.47.1728427816761; Tue, 08 Oct 2024 15:50:16 -0700 (PDT) Received: from debug.ba.rivosinc.com ([64.71.180.162]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-20c138af962sm60006105ad.26.2024.10.08.15.50.15 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 08 Oct 2024 15:50:16 -0700 (PDT) From: Deepak Gupta To: qemu-riscv@nongnu.org, qemu-devel@nongnu.org Cc: palmer@dabbelt.com, Alistair.Francis@wdc.com, bmeng.cn@gmail.com, liwei1518@gmail.com, dbarboza@ventanamicro.com, zhiwei_liu@linux.alibaba.com, jim.shu@sifive.com, kito.cheng@sifive.com, Deepak Gupta , Andy Chiu , Alistair Francis Subject: [PATCH v16 02/20] target/riscv: Add zicfilp extension Date: Tue, 8 Oct 2024 15:49:52 -0700 Message-ID: <20241008225010.1861630-3-debug@rivosinc.com> X-Mailer: git-send-email 2.45.0 In-Reply-To: <20241008225010.1861630-1-debug@rivosinc.com> References: <20241008225010.1861630-1-debug@rivosinc.com> MIME-Version: 1.0 Received-SPF: pass client-ip=2607:f8b0:4864:20::62a; envelope-from=debug@rivosinc.com; helo=mail-pl1-x62a.google.com 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, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=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 zicfilp [1] riscv cpu extension enables forward control flow integrity. If enabled, all indirect calls must land on a landing pad instruction. This patch sets up space for zicfilp extension in cpuconfig. zicfilp is dependend on zicsr. [1] - https://github.com/riscv/riscv-cfi Signed-off-by: Deepak Gupta Co-developed-by: Jim Shu Co-developed-by: Andy Chiu Reviewed-by: Alistair Francis --- target/riscv/cpu.c | 1 + target/riscv/cpu_cfg.h | 1 + target/riscv/tcg/tcg-cpu.c | 5 +++++ 3 files changed, 7 insertions(+) diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c index 24ca0bfcaa..b7201a69df 100644 --- a/target/riscv/cpu.c +++ b/target/riscv/cpu.c @@ -106,6 +106,7 @@ const RISCVIsaExtData isa_edata_arr[] = { ISA_EXT_DATA_ENTRY(ziccif, PRIV_VERSION_1_11_0, has_priv_1_11), ISA_EXT_DATA_ENTRY(zicclsm, PRIV_VERSION_1_11_0, has_priv_1_11), ISA_EXT_DATA_ENTRY(ziccrse, PRIV_VERSION_1_11_0, has_priv_1_11), + ISA_EXT_DATA_ENTRY(zicfilp, PRIV_VERSION_1_12_0, ext_zicfilp), ISA_EXT_DATA_ENTRY(zicond, PRIV_VERSION_1_12_0, ext_zicond), ISA_EXT_DATA_ENTRY(zicntr, PRIV_VERSION_1_12_0, ext_zicntr), ISA_EXT_DATA_ENTRY(zicsr, PRIV_VERSION_1_10_0, ext_zicsr), diff --git a/target/riscv/cpu_cfg.h b/target/riscv/cpu_cfg.h index 355afedfd3..fe7ad85b66 100644 --- a/target/riscv/cpu_cfg.h +++ b/target/riscv/cpu_cfg.h @@ -67,6 +67,7 @@ struct RISCVCPUConfig { bool ext_zicbom; bool ext_zicbop; bool ext_zicboz; + bool ext_zicfilp; bool ext_zicond; bool ext_zihintntl; bool ext_zihintpause; diff --git a/target/riscv/tcg/tcg-cpu.c b/target/riscv/tcg/tcg-cpu.c index dea8ab7a43..963c1c604a 100644 --- a/target/riscv/tcg/tcg-cpu.c +++ b/target/riscv/tcg/tcg-cpu.c @@ -623,6 +623,11 @@ void riscv_cpu_validate_set_extensions(RISCVCPU *cpu, Error **errp) cpu->pmu_avail_ctrs = 0; } + if (cpu->cfg.ext_zicfilp && !cpu->cfg.ext_zicsr) { + error_setg(errp, "zicfilp extension requires zicsr extension"); + return; + } + /* * Disable isa extensions based on priv spec after we * validated and set everything we need.