The same requirements and procedures for protecting against reuse of a non-reusable copy of a load module apply when passing control without return as were stated under "Passing Control With Return." The procedures for passing control are as follows.
Issue a LOAD macro to obtain a copy of the load module. The entry address and addressing mode returned in register 0 are loaded into register 15. The linkage requirements are the same when passing control between load modules as when passing control between control sections in the same load module; register 13 must be reloaded with the old save area address, then registers 14 and 2-12 restored from that old save area. Register 1 is used to pass parameters in a parameter list. If the addressing mode does not change, a branch instruction is issued to pass control to the address in register 15; if the addressing mode does change, a branch and save and set mode macro is used.