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Calling C++ Functions in Inline Assembly

An __asm block can call only global C++ functions that are not overloaded. If you call an overloaded global C++ function or a C++ member function, the compiler issues an error.

You can also call any functions declared with extern "C" linkage. This allows an __asm block within a C++ program to call the C library functions, because all the standard header files declare the library functions to have extern "C" linkage.

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