From patchwork Tue Aug 20 00:01:14 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Deepak Gupta X-Patchwork-Id: 13769189 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 DE5CEC52D6F for ; Tue, 20 Aug 2024 00:02:33 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sgCJk-0000Sv-M4; Mon, 19 Aug 2024 20:01:44 -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 1sgCJi-0000Ra-5D for qemu-devel@nongnu.org; Mon, 19 Aug 2024 20:01:42 -0400 Received: from mail-pl1-x62d.google.com ([2607:f8b0:4864:20::62d]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1sgCJf-0001Be-3U for qemu-devel@nongnu.org; Mon, 19 Aug 2024 20:01:41 -0400 Received: by mail-pl1-x62d.google.com with SMTP id d9443c01a7336-2021537a8e6so28052365ad.2 for ; Mon, 19 Aug 2024 17:01:36 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=rivosinc-com.20230601.gappssmtp.com; s=20230601; t=1724112095; x=1724716895; darn=nongnu.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=krAOmrRGwzk16D6jxvidgTchDV2onVejpnKMH45Rnic=; b=MgVo2E/JYUPqtE+aG1egfj5WsKK5P2GrxUEvtqMAMkU1vrIxbwvec6o89X4s9A23xV oeSebszOGn6wfVDHX+ekSjb+SiA/dUkvb+kgGEql21DLIf6Fq7ag1blF2IUkTahmGZLi KXyEvNilEN0w8IpKIlJfJS/Y8J0rAMURXfMHVvDTPu6JBskw6tRcPuyPMrD9ehWubrsv b8UnUyudJ9Uxqc4+Ngu8MPWGTzqgq7mZLu7ylAacsm7ggzqEjxwIxbuUDL2yWQ3+IqNG QjQZ0B2WoPDXN78w03QMJYW/qrYes9F6rHWKLsyDPuR8KJC2Oq2DWqsM1t37gyakeBu4 M1PQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1724112095; x=1724716895; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=krAOmrRGwzk16D6jxvidgTchDV2onVejpnKMH45Rnic=; b=H8RFRw1m1e1D6hRyPMbVCDjqYtOwFuzEPcEC3F6HhaZdxcr0Bp4d2XH3m7qMx4iQDu 1TTaTzMTQ1OUv8/pjaVUcNEilynK6GJqqIN6UTRgjDIqva9175+aS1OcuZRhj8ui6VYM YnAEpr37bKGm8/sAayFjsgJJAFr86vvHRy20yyRTKAd0hzMUkSLm+N5KmS3LhGXEu2+P E6MxmQQsneFaz4ThcLtUOba1gXEY1j2Un7zF4XE9oUOY09hK86Xb9t7Fe9F+ri7ubJ7r 5Hu8MbIgo9TBugYi9B9BaLd+qyK/V5JJMC7LW9CuSxvARH2g7tSbtWV57I1OkbokmhDA A5pA== X-Forwarded-Encrypted: i=1; AJvYcCXfKwOositCz84+iaZ61fDbdHqbHteRYT1WZg3rF3oFzN116dj99eSJ4HYUxky6q7vmnk0Zc3rlN214cZunKLW7XaXWbkw= X-Gm-Message-State: AOJu0YyzOHWEnuiYchqb6OX6QXsmJsPnyvJDxFRdNS/iRphNO6mIQS/F 2TzEd5xXAQYP36cJo8MYWU5UjtC+aburpZfRmtJc6zPLVC1oFOS22gf1e95/nwA= X-Google-Smtp-Source: AGHT+IEhD2F8ekGV/M9M9F+9TlTldSA+/m90ztUZolEv/hx6Fquc5pi1CdiE+sRKBMFbR9ZT48tBtA== X-Received: by 2002:a17:902:f550:b0:202:3444:af80 with SMTP id d9443c01a7336-2023444b1e3mr96961285ad.8.1724112095261; Mon, 19 Aug 2024 17:01:35 -0700 (PDT) Received: from debug.ba.rivosinc.com ([64.71.180.162]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-201f038a779sm67477445ad.188.2024.08.19.17.01.34 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 19 Aug 2024 17:01:34 -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, andy.chiu@sifive.com, kito.cheng@sifive.com, Deepak Gupta Subject: [PATCH v5 00/15] riscv support for control flow integrity extensions Date: Mon, 19 Aug 2024 17:01:14 -0700 Message-ID: <20240820000129.3522346-1-debug@rivosinc.com> X-Mailer: git-send-email 2.45.0 MIME-Version: 1.0 Received-SPF: pass client-ip=2607:f8b0:4864:20::62d; envelope-from=debug@rivosinc.com; helo=mail-pl1-x62d.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, T_SCC_BODY_TEXT_LINE=-0.01 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 v5 for riscv zicfilp and zicfiss extensions support in qemu. Links for previous versions [1] - v1 https://lists.nongnu.org/archive/html/qemu-devel/2024-07/msg06017.html [2] - v2 https://lore.kernel.org/all/ed23bcbc-fdc4-4492-803c-daa95880375a@linaro.org/T/ [3] - v3 https://lists.nongnu.org/archive/html/qemu-devel/2024-08/msg01005.html [4] - v4 https://lore.kernel.org/all/20240816010711.3055425-6-debug@rivosinc.com/T/ --- v5: - Simplified elp tracking and lpad implementation as per suggestion by richard - Simplified shadow stack mmu checks as per suggestion by richard - Converged zicfiss compressed and non-comressed instructions to same translation - Removed trace hooks. Don't need for upstream. v4: - elp state in cpu is true/false instead of enum and elp cleared unconditionally on trap entry. elp in *status cleared unconditionally on trap return. - Moved logic for branch tracking in instruction translation from tb_start. - fixed zicfiss dependency on 'A' - `cpu_get_fcfien/bcfien` helpers checks fixed to check for extension first. - removed trace hook enums. Instead added dedicated trace helpers wherever needed. - fixed/simplified instruction format in decoder for lpad, sspush, sspopchk - simplified tlb index logic for shadow stack instructions. Removed SUM TB_FLAG - access to ssp CSR is gated on `cpu_get_bcfien` instead of duplicated logic - removed vDSO related changes for now. v3: - Removed prctl specific patches because they need to be upstream in kernel first. - As suggested by Richard, added TB flag if fcfi enabled - Re-worked translation for landing pad and shadow stack instructions to not require helper. - tcg helpers only for cfi violation cases so that trace hooks can be placed. - Style changes. - fixes assert condition in accel/tcg v2: - added missed file (in v1) for shadow stack instructions implementation. Deepak Gupta (15): target/riscv: Add zicfilp extension target/riscv: Introduce elp state and enabling controls for zicfilp target/riscv: save and restore elp state on priv transitions target/riscv: additional code information for sw check target/riscv: tracking indirect branches (fcfi) for zicfilp target/riscv: zicfilp `lpad` impl and branch tracking disas/riscv: enable `lpad` disassembly target/riscv: Add zicfiss extension target/riscv: introduce ssp and enabling controls for zicfiss target/riscv: tb flag for shadow stack instructions target/riscv: mmu changes for zicfiss shadow stack protection target/riscv: implement zicfiss instructions target/riscv: compressed encodings for sspush and sspopchk disas/riscv: enable disassembly for zicfiss instructions disas/riscv: enable disassembly for compressed sspush/sspopchk disas/riscv.c | 77 +++++++++- disas/riscv.h | 4 + target/riscv/cpu.c | 17 +++ target/riscv/cpu.h | 15 ++ target/riscv/cpu_bits.h | 17 +++ target/riscv/cpu_cfg.h | 2 + target/riscv/cpu_helper.c | 140 +++++++++++++++++- target/riscv/cpu_user.h | 1 + target/riscv/csr.c | 84 +++++++++++ target/riscv/insn16.decode | 4 + target/riscv/insn32.decode | 26 +++- target/riscv/insn_trans/trans_rva.c.inc | 41 +++++ target/riscv/insn_trans/trans_rvi.c.inc | 55 +++++++ target/riscv/insn_trans/trans_rvzicfiss.c.inc | 73 +++++++++ target/riscv/internals.h | 3 + target/riscv/op_helper.c | 18 +++ target/riscv/pmp.c | 5 + target/riscv/pmp.h | 3 +- target/riscv/tcg/tcg-cpu.c | 24 +++ target/riscv/translate.c | 30 +++- 20 files changed, 625 insertions(+), 14 deletions(-) create mode 100644 target/riscv/insn_trans/trans_rvzicfiss.c.inc