On Tue, Aug 8, 2023 at 9:22 AM Metzger, Markus T via Dwarf-discuss < dwarf-discuss@lists.dwarfstd.org> wrote:
> >### Section 2.5.1.7 Special Operations, p.37 > > > >The first sentence of the description of DW_OP_entry_value reads: > > > > The DW_OP_entry_value operation pushes the value that the described > > location held upon entering the current subprogram. > > > >A DWARF expression does not describe a location, so this should read: > > > > The DW_OP_entry_value operation evaluates an expression or register > > location description as if it had been evaluated upon entering the > > current subprogram, and pushes the value of the expression or content > > of the register, respectively. > > Aren't register location descriptions the only thing that, given > appropriate > unwind rules, can actually be implemented? > > Should this be restricted to only allow register location descriptions? > There exist debuggers (e.g. Pernosco https://pernos.co/about/overview/) that are capable of handling non-register location descriptions in the past, so I would oppose any spec limitation on what DW_OP_entry_value can evaluate. - Kyle > Regards, > Markus. > Intel Deutschland GmbH > Registered Address: Am Campeon 10, 85579 Neubiberg, Germany > Tel: +49 89 99 8853-0, www.intel.de <http://www.intel.de> > Managing Directors: Christin Eisenschmid, Sharon Heck, Tiffany Doon Silva > Chairperson of the Supervisory Board: Nicole Lau > Registered Office: Munich > Commercial Register: Amtsgericht Muenchen HRB 186928 > > -- > Dwarf-discuss mailing list > Dwarf-discuss@lists.dwarfstd.org > https://lists.dwarfstd.org/mailman/listinfo/dwarf-discuss >
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