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Thread-Topic: [PATCH v4 2/2] LAM: Enable tagged pointer support for watchpoints. 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charset="us-ascii" MIME-Version: 1.0 X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: SN7PR11MB7638.namprd11.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: 5bd76123-367c-4d4f-19c9-08dc9ccff115 X-MS-Exchange-CrossTenant-originalarrivaltime: 05 Jul 2024 08:53:29.6143 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 46c98d88-e344-4ed4-8496-4ed7712e255d X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: bfhPhUYz0oPJmqGeIzMgkvJhBs2txJwzI73BVrqd/4BnCsVLaOqIljsWbT0we9iHurg1xH3oxV5x0z5ZjpaKsck5VuxgucbJSk+eIMPjf0w= X-MS-Exchange-Transport-CrossTenantHeadersStamped: SA3PR11MB8073 X-OriginatorOrg: intel.com Content-Transfer-Encoding: quoted-printable X-Spam-Status: No, score=-4.7 required=5.0 tests=BAYES_00, DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, SPF_HELO_NONE, SPF_NONE, TXREP autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org X-BeenThere: gdb-patches@sourceware.org X-Mailman-Version: 2.1.30 Precedence: list List-Id: Gdb-patches mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: gdb-patches-bounces~public-inbox=simark.ca@sourceware.org > > From: "Schimpe, Christina" > > CC: "gdb-patches@sourceware.org" , > > "Willgerodt, Felix" , "luis.machado@arm.co= m" > > > > Date: Thu, 4 Jul 2024 13:15:20 +0000 > > > > So to answer your question properly: No, we don't explain the term " > tagged data pointers" anywhere. > > But we write for instance in the commit message "tagged pointers used > > for data accesses", which is understandable I think. > = > Well, I'm sorry to say that it doesn't explain this enough for me. > I'm quite a heavy user of GDB, but I have no idea what is a tagged pointe= r for > data access. Do we have in the manual anything related to such pointers, > even if we use different words to talk about them? If so, could you poin= t me > to those descriptions in the manual? Maybe if I read what we say there, I > could suggest wording for NEWS that will be consistent with our terminolo= gy > in the manual. > = > Thanks. Hi Eli, = Sorry for the confusion here. You are right, the term "tagged pointer" is not explained anywhere in the m= anual. = Also I couldn't find a section that describes them but uses a different wor= ding. I think the first time we use this term in GDB is with commit "Clear non-significant bits of address on memory access". = The terms tagged address and tagged pointer are used. A very similar commit for setting a watchpoint on a tagged address but for= AArch64 is: "Clear non-significant bits of address in watchpoint" For both commits I couldn't find any documentation/NEWS part. I will try to come up with a section on tagged addresses/pointers in the ma= nual. Thanks, Christina Intel Deutschland GmbH Registered Address: Am Campeon 10, 85579 Neubiberg, Germany Tel: +49 89 99 8853-0, www.intel.de Managing Directors: Sean Fennelly, Jeffrey Schneiderman, Tiffany Doon Silva Chairperson of the Supervisory Board: Nicole Lau Registered Office: Munich Commercial Register: Amtsgericht Muenchen HRB 186928