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Wed, 29 Jul 2020 11:28:30 +0000 From: Anup Patel To: Peter Maydell , Palmer Dabbelt , Alistair Francis , Sagar Karandikar Subject: [PATCH 0/3] Trapped instruction encoding support Date: Wed, 29 Jul 2020 16:57:58 +0530 Message-Id: <20200729112801.108985-1-anup.patel@wdc.com> X-Mailer: git-send-email 2.25.1 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-ClientProxiedBy: BM1PR01CA0166.INDPRD01.PROD.OUTLOOK.COM (2603:1096:b00:68::36) To DM6PR04MB6201.namprd04.prod.outlook.com (2603:10b6:5:127::32) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from wdc.com (103.56.183.175) by BM1PR01CA0166.INDPRD01.PROD.OUTLOOK.COM (2603:1096:b00:68::36) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3239.17 via Frontend Transport; Wed, 29 Jul 2020 11:28:26 +0000 X-Mailer: git-send-email 2.25.1 X-Originating-IP: [103.56.183.175] X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-HT: Tenant X-MS-Office365-Filtering-Correlation-Id: c61dc920-9027-43e8-0cc7-08d833b284da X-MS-TrafficTypeDiagnostic: DM6PR04MB5753: X-MS-Exchange-Transport-Forked: True X-Microsoft-Antispam-PRVS: WDCIPOUTBOUND: EOP-TRUE X-MS-Oob-TLC-OOBClassifiers: OLM:8273; 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envelope-from=prvs=47218c038=Anup.Patel@wdc.com; helo=esa2.hgst.iphmx.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/07/29 07:28:32 X-ACL-Warn: Detected OS = FreeBSD 9.x or newer [fuzzy] X-Spam_score_int: -43 X-Spam_score: -4.4 X-Spam_bar: ---- X-Spam_report: (-4.4 / 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, MSGID_FROM_MTA_HEADER=0.001, RCVD_IN_DNSWL_MED=-2.3, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Atish Patra , Anup Patel , qemu-riscv@nongnu.org, qemu-devel@nongnu.org, Anup Patel Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" With RISC-V H-extension support, a RISC-V implementation can provide trapped instruction encoding for almost all traps/exceptions. For illegal/virtual instruction traps, the instruction encoding is available in STVAL/MTVAL CSR. For load/store faults, a transformed encoding of the trapped instruction is available in MTINST/HTINST CSR. This series implements optional RISC-V HART feature to provide trapped instruction encoding in appropriate CSR. These patches can be found in riscv_trap_insn_v1, branch at: https://github.com/avpatel/qemu.git Anup Patel (3): target/riscv: Optional feature to provide trapped instruction in CSRs target/riscv: Fix write_htinst() implementation target/riscv: Update MTINST/HTINST CSR in riscv_cpu_do_interrupt() target/riscv/cpu.c | 7 ++ target/riscv/cpu.h | 11 ++- target/riscv/cpu_helper.c | 172 +++++++++++++++++++++++++++++++++++++- target/riscv/csr.c | 1 + target/riscv/instmap.h | 41 +++++++++ target/riscv/translate.c | 14 +++- 6 files changed, 241 insertions(+), 5 deletions(-) -- 2.25.1