Introduce SymbolResolver and its subclasses.
SymbolResolver provides a clean way to do the symbol lookup at
runtime.
LookupFunctionSymbolResolver searches a symbol through a given
function with context supplied.
BCCRuntimeSymbolResolver searches symbol from a predefined symbol-to-
address array which replaces the FindRuntime() function defined in
Runtime.c previously.
SymbolResolverProxy chains the SymbolResolvers and searches the symbol
one by one following the chain until it founds the definition of the
symbol.
17 files changed