When working with the Linker, it can be difficult to discover which C types does the linker support. For instance, if some code needs to work with a C "long", what is its corresponding "canonical layout" for a given linker instance?

Such layout will obviously depend on the platform for which the linker is defined (e.g. on Linux/x64 such a layout would be equivalent to JAVA_LONG, on Windows/x64 such a layout would be equivalent to a JAVA_INT).

Since the set of types supported by a linker is linker-specific, the API should capture this property in a very loose fashion - e.g. just a map from ABI type names to canonical layouts.