Commits on Mar 15, 2024

1. [PAuthABIELF64] Use .note.gnu.property section as ELF marking scheme. …

   Make the alternative .note.gnu.property section the default ELF
   marking scheme for ELF executables and shared libraries. Preserve
   the original SHT_NOTE section as an alternative for legacy
   compatibility.
   
   Extract the common parts of all of the ELF marking schemes
   into "Core Information". The ELF marking schemes now describe
   how they encode the "Core Information". The compatibility model
   is now written in terms of the "Core Information".
   
   The default PAuth vendor and version for ELF files with no ELF
   marking is (0,0) which is incompatible with everything. This is
   the safest default as there is no information about what, if any,
   signing schema is used by that ELF file.
   
   Implementations can change this default in the presence of
   supplemental information, such as a linker command line option.
   For example there could be the equivalent of the -z force-bti
   which declares that all ELF objects without the BTI property are
   considered to be compatible.

   

   smithp35 committed Mar 15, 2024
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