1. In a computer system including a first hardware processing element configured to service a particular function and a second hardware processing element, a method comprising: when said second hardware processing element initiates said particular function, allocating a parameter buffer in an open area of a local store (LS) memory within said second hardware processing element, wherein said LS memory comprises said open area accessible to said first hardware processing element and an isolated area inaccessible to said first hardware processing element; copying function parameters of said particular function to a buffer within said open area of said LS memory; writing a message word to said open area of said LS memory, wherein said message word comprises an identification variable of said particular function and a location variable of said function parameters within said open area of said LS memory; when execution of a current process is suspended on said second hardware processing element, reading said message word into said first hardware processing element; executing said particular function identified by said message word within said first hardware processing element; and resuming execution of said current process previously suspended on said second hardware processing element.