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charset="us-ascii" MIME-Version: 1.0 X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: PH0PR11MB7636.namprd11.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: 249f95da-9610-4e7a-ebac-08dd4e76f917 X-MS-Exchange-CrossTenant-originalarrivaltime: 16 Feb 2025 10:45:04.8283 (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: NZ/OqxZ+jAWVddk49XkUWgBKBReK4ggD7IFuHZ+9oWUJEKFrcvGmDCTmHo15vclKhNbRKX7Rul81EC21d8jZ0XfIaBRsWjxnZyC4Pv58TsI= X-MS-Exchange-Transport-CrossTenantHeadersStamped: MW6PR11MB8311 X-OriginatorOrg: intel.com Content-Transfer-Encoding: quoted-printable 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 > -----Original Message----- > From: Thiago Jung Bauermann > Sent: Saturday, February 15, 2025 4:45 AM > To: Schimpe, Christina > Cc: gdb-patches@sourceware.org > Subject: Re: [PATCH 11/12] gdb, gdbarch: Introduce gdbarch method to get > the shadow stack pointer. > = > Hello Christina, > = > Thiago Jung Bauermann writes: > = > > "Schimpe, Christina" writes: > > > >> Would something like that be acceptable as well? > >> > >> Method( > >> comment=3D""" > >> If possible, return the shadow stack pointer. On some architectures, > >> the shadow stack pointer is available even if the feature is > >> disabled. To return the shadow stack enablement state configure > SHADOW_STACK_ENABLED. > >> """, > >> type=3D"std::optional", > >> name=3D"get_shadow_stack_pointer", > >> params=3D[("bool &", "shadow_stack_enabled")], > >> predefault=3D"default_get_shadow_stack_pointer", > >> invalid=3DFalse, > >> ) > > > > Yes, this looks good. > = > I was rebasing my Guarded Control Stack code on top of this series, and > noticed that I will need to access the thread's regcache for the aarch64 > implementation of this gdbarch method. Then I noticed that the x86_64 > version also needs it, and calls "get_thread_regcache (inferior_thread ()= )". > It would be better to pass the regcache as an argument instead. Hi Thiago, = Do you mean instead or in addition? I thought you also need the parameter ("bool &", "shadow_stack_enabled"). 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