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CTRY:IE; LANG:en; SCL:1; SRV:; IPV:CAL; SFV:NSPM; H:64aa7808-outbound-1.mta.getcheckrecipient.com; PTR:ec2-63-35-35-123.eu-west-1.compute.amazonaws.com; CAT:NONE; SFS:(4636009)(376002)(136003)(396003)(39850400004)(346002)(46966005)(36906005)(54906003)(55016002)(8936002)(8676002)(86362001)(83380400001)(9686003)(47076004)(966005)(82310400003)(81166007)(336012)(356005)(4326008)(33656002)(5660300002)(7696005)(316002)(6916009)(2906002)(82740400003)(478600001)(6506007)(52536014)(186003)(70586007)(26005)(70206006); DIR:OUT; SFP:1101; X-OriginatorOrg: arm.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 29 Oct 2020 15:05:13.3580 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 35f1e573-1395-4702-41b0-08d87c1c0995 X-MS-Exchange-CrossTenant-Id: f34e5979-57d9-4aaa-ad4d-b122a662184d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=f34e5979-57d9-4aaa-ad4d-b122a662184d; Ip=[63.35.35.123]; Helo=[64aa7808-outbound-1.mta.getcheckrecipient.com] X-MS-Exchange-CrossTenant-AuthSource: VE1EUR03FT063.eop-EUR03.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: VI1PR0801MB1885 X-Spam-Status: No, score=-8.3 required=5.0 tests=BAYES_00, DKIM_SIGNED, DKIM_VALID, RCVD_IN_DNSWL_NONE, RCVD_IN_MSPIKE_H2, SPF_HELO_PASS, SPF_PASS, TXREP, UNPARSEABLE_RELAY autolearn=ham autolearn_force=no version=3.4.2 X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on server2.sourceware.org X-BeenThere: gdb@sourceware.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Gdb mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 29 Oct 2020 15:05:18 -0000 Hi all, We have pushed the users/ARM/morello-binutils-gdb-master branch to the binutils repo implementing initial support for the Morello architecture [1]= . The Morello architecture is a prototype implementation of the capability-ba= sed CHERI [2] architecture in AArch64, intended to promote research into capabi= lity architectures and their deployment. The work builds on multiple years of research and development by the Cambridge University Computer Laboratory of the CHERI project and we are ve= ry excited to explore its application to the Arm architecture. I encourage you to explore the CHERI specifications [2] and the software already available. The gas, objdump and ld components on the branch are in reasonable shape an= d have been used to assemble and link a Linux kernel with Morello modificatio= ns. The GDB port is more of a work in progress. We have published an LLVM-derived Morello toolchain [3], based on the CHERI toolchain, that can be used to try out the compiler support available for Morello. The ABI specifications (available on developer.arm.com [4]) are in an alpha= state and are likely to change going forward. There are also related publications on the programming model [5] and langua= ge runtime semantics [6] from the CHERI project. There is work ongoing on porting GCC and glibc to Morello and we will share more details as that work progresses. As Morello is a prototype architecture we intend to maintain the toolchain components on a branch rather than integrate it into master. We are interested in any feedback you have on the code. To report bugs please use the GitLab mirror set up at: https://git.morello-project.org/morello-gnu-toolchain/binutils-gdb Please send any patches or start discussions on the gnu-morello [7] list, kindly hosted by Linaro. Maintainers for the branch are: * GDB: Luis Machado * Binutils: Matthew Malcomson * Binutils: Kyrylo Tkachov We are very excited to investigate the challenges and possibilities of a capability-based architecture. Please have a read through the links below if this project is of interest to you and reach out to us on the list [7] If you have any feedback or discussions about the Morello architecture and program you are welcome to reach out on the forums [8]. We look forward to sharing more in the near future. Last but not least, I'd like to say a big thank you to Siddhesh Poyarekar for the binutils port described here. Thanks, Kyrill [1] https://developer.arm.com/architectures/cpu-architecture/a-profile/more= llo [2] https://www.cl.cam.ac.uk/research/security/ctsrd/cheri/ [3] https://git.morello-project.org/morello/llvm-project [4] https://developer.arm.com/architectures/system-architectures/software-s= tandards/abi [5] https://www.cl.cam.ac.uk/techreports/UCAM-CL-TR-947.pdf [6] https://www.cl.cam.ac.uk/research/security/ctsrd/pdfs/201904-asplos-che= riabi.pdf [7] https://op-lists.linaro.org/mailman/listinfo/gnu-morello [8] https://community.arm.com/developer/research/morello/