Updates tpctypes::DylibHandle to be an ExecutorAddr (rather than a uint64_t),
and SimpleExecutorDylibManager to hold and return raw OS handle values (as
ExecutorAddrs) rather than index values into a map of DynamicLibrary instances.
This will allow clients to use EPCGenericDylibManager in contexts where the
existing DynamicLibrary interface is too limited to be used. (e.g. to look up
JIT symbols in a dylib that was loaded with RTLD_LOCAL).
Removing the 'ess' suffix improves the ergonomics without sacrificing clarity.
Since this class is likely to be used more frequently in the future it's worth
some short term pain to fix this now.
Accepts a vector of (SymbolStringPtr, ExecutorAddress*) pairs, looks up all the
symbols, then writes their address to each of the corresponding
ExecutorAddresses.
This idiom (looking up and recording addresses into a specific set of variables)
is used in MachOPlatform and the (temporarily reverted) ELFNixPlatform, and is
likely to be used in other places in the near future, so wrapping it in a
utility function should save us some boilerplate.
Lang Hames