Memory patching device

Details Memory patching device Memory patching device

1996-09-26

1997-12-02

Downs, Robert W.

395412, 395442, 3954211, 395828, 39518203, 39518204, 39518205, G06F 1200, G06F 926, G06F 932, G06F 1202

Patent

active

056945663

ABSTRACT:
A memory patching device for a computer system is provided which temporarily changes part of an object program. A patch table containing patch information associated with each data to be patched is stored in storage means. Patch information retriever retrieves patch information associated with an object program from the patch table when the object program is started. Address calculator calculates an absolute address in a main memory of data of the object program to be patched, based on a base address in the main memory at which the object program is loaded, and an offset address contained in the retrieved patch information. A patcher patches data stored at the calculated absolute address of the main memory, based on patch data contained in the retrieved patch information. The patch information retriever, the address calculator, and the patcher constitute a patch library which is contained in the object program.

REFERENCES:
patent: 4028684 (1977-06-01), Divine et al.

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