[CFR] Adding a function to rtld-elf.so, how to handle Symbol.map?

[Ian Lepore]

I need to add an ARM-specific function to rtld-elf.so to help locate
exception unwind info in shared objects.  I'm confused about how to add
the function to Symbol.map... do I have to add a 1.4 section because it
was first added in FreeBSD 11, or does it go into an existing section
because it doesn't introduce changes to an existing ABI?

-- Ian

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