DWARF v2 support in the Runtime module's DwarfReader

[weissi]

Motivation

For certain environments (seemingly often involving assembly or 32 bit platforms), DWARF v2 seems to still be somewhat common.

See also:

• DwarfReader in vendored code for swift-profile-recorder crashes with Dwarf v3 ELF 32-bit binary #85792

Proposed solution

Implement DWARF v2 support in the Runtime module's DwarfReader.

Alternatives considered

No response

Additional information

No response