x86 - There is a signature for a specific ABI in an ELF or binary file? -

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I need to identify ABI which generates some binary, programmable, dynamic and static libraries.

I would like to ask that there is a property or a tag or string that I can see from an external device to see that the ABI was used to make that binary object. My objects are mostly x86 and ARM for LF, and I am also adding ABI for debugging purposes like DBARF.

EDIT: Like the magic bytes at the beginning of a file which is usually used to detect the file's file format.

There are several indicators that may exist in ELF files.

  1. Used to mark the EI_OSABI area
  2. .

  3. The code of "branding" is used in the reserved part of the e_indent area (beginning 8th byte).
  4. For ARM files, you have the information in the EABI version / variant, and the object file can also contain the .ARM.attributes section.
  5. In the .comment section the compiler can have a name / version, but it is only informative - it is not used by OS to identify ABI, and usually ABI information is not mentioned.
  6. The .note section can contain additional information that can point to the use of ABI.

In most cases, readelf will display the required information, although you will see some switches (like -A to .arm. Attributes section to display). I do not think there is anything to parse the .note.Abi-tag section so that you may have to do this manually.

For more information, see SysV ABI and ARM EAB Docs.


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