Global entry point and local entry point for callee function

A computer program product for implementing a global entry point and a local entry point for a callee function, the computer program product comprising:

• a computer readable storage medium having program instructions embodied therewith, the program instructions readable by a processing circuit to cause the processing circuit to perform a method comprising:
• executing, by a processor, a function call from a calling function to the callee function, the executing comprising:
• based on the function call being a direct and external function call, entering the callee function at the global entry point of the callee function and executing prologue code in the callee function that calculates and stores a table of contents (TOC) value for the callee function in a TOC register;
• based on the function call being a direct and local function call, entering the callee function at the local entry point of the callee function, wherein entering the callee function at the local entry point skips the prologue code;
• and
• based on the function call being an indirect function call, entering the callee function at the global entry point and executing the prologue code.