If you want all the nasty details, this post covers it all: "This also has a side-effect on function pointers. Since function pointers are generally used at so

If you want all the nasty details, this post covers it all: "This also has a side-effect on function pointers. Since function pointers are generally used at some distance from allocation, they might be used in a module with a different gp value. The compiler gets around this by not compiling a function pointer to a single pointer-sized value; it compiles to a pair of pointer-sized values, one representing the address of the first instruction (bundle on IA64) in the function, the other being the correct gp value to use." http://mikedimmick.blogspot.com/2004/01/ia64s-global-pointer.html?m=1 http://mikedimmick.blogspot.com/2004/01/ia64s-global-pointer...