Method for passing data parameters between a calling program and a called subroutine in a command analysis table of a computer stored data base system
US5093917A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 17, 1990 |
| Grant date | Mar 3, 1992 |
| Priority date | — |
| Expiry date | Jan 17, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F9/4484
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method for passing data parameters between a calling program and a called subroutine in a command analysis table of a computer stored data base system is disclosed. The method uses special operating codes written in the native language of the command analysis table, that allow the calling program to put pertinent information about the calling parameters into a temporary storage area. The called program or subroutine, uses a second op-code to collect the stored parameters in the temporary storage area. The pulled parameters are then used to initialize local variables and to load parameter values used by the called subroutine, into associated local registers. Information previously stored in the local registers is saved, and returned to the local registers when the subroutine finishes. Pertinent information for returning back to the calling program is also saved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.