Data processing system featuring subroutine linkage operations using hardware controlled stacks
System of controlling procedure execution using process control blocks
System for excuting a program-call instruction in a computer
Calling instructions for a data processing system Patent #: 4338663
ApplicationNo. 06/302932 filed on 09/16/1981
US Classes:712/242To macro-instruction routine
ExaminersPrimary: Zache, Raulfe B.
Attorney, Agent or Firm
International ClassesG06F 9/50 (20060101)
G06F 12/02 (20060101)
G06F 9/46 (20060101)
AbstractA computer architecture is disclosed which permits intersegment program calls with associated selective allocation of data segments of varying lengths. The calling program controls selective allocation of segments to the called program but the called program controls the lengths of the segments being allocated. In this way, recursive calls to the same program cannot affect the function or data of other programs or of the same program in a previous call. Also allocation of data segments can be postponed until execution resulting in more flexible execution of programs written without knowledge of the details of other co-executing programs.