android13/device/generic/goldfish/emu64x

The "emu64x" product defines a non-hardware-specific IA target
without a kernel or bootloader.

This only supports 64bit abi: x86_64

It can be used to build the entire user-level system, and
will work with the IA version of the emulator,

It is not a product "base class"; no other products inherit
from it or use it in any way.