+/**\r
+ Return the pointer to the first instruction of a function given a function pointer.\r
+ On x64 CPU architectures, these two pointer values are the same, \r
+ so the implementation of this macro is very simple.\r
+ \r
+ @param p A pointer to a function\r
+\r
+ @return The pointer to the first instruction of a function given a function pointer.\r
+**/\r