Not so sure that "volatile" applies. All this tells the compiler that the value written to the "volatile item" cannot be retreived by reading from the same location. It does not change the compilers decision of that gets written to the function pointer.

Next please note that "volatile" is a characteristic of importance to the compiler.....whilest the issues of the function pointers that I am having are brought about by what the BL51 linker is putting into the target function pointer when the linker thinks the function pointer value is in the same bank as opposed to a different bank. The bank switching is largly a linker job and has little to do with the C compiler.

Michael Karas