What is needed for supporting c++ programs, that is, c++ programs with all sorts of extensions (exception handling, overloading, RTTI etc), in an operating system? ( OS == kernel + loader etc)
Does supporting C++ shared libraries cost extra?
c++ usage in operating systems
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Tim
Re:c++ usage in operating systems
Exception handling tends to be the hard one; it's not only compiler-specific, but OS-specific too. The compiler generally emits OS-specific code to deal with exceptions, so you might have a choice of either (a) making your OS's exception design match the design of the exceptions for the OS that your compiler targets or (b) modifying the compiler.
RTTI is compiler-specific but need not use any OS features. You'll need to reverse-engineer the system that your compiler uses for RTTI and put that it. With gcc, the RTTI stuff may be in libgcc.a (haven't tried).
new and delete (and new[] and delete[]) are easy. Constructors and destructors are slightly harder, but still easy. Everything else doesn't need any special handling.
RTTI is compiler-specific but need not use any OS features. You'll need to reverse-engineer the system that your compiler uses for RTTI and put that it. With gcc, the RTTI stuff may be in libgcc.a (haven't tried).
new and delete (and new[] and delete[]) are easy. Constructors and destructors are slightly harder, but still easy. Everything else doesn't need any special handling.