Register mapping system having a log containing sequential listi

Details Register mapping system having a log containing sequential listi Register mapping system having a log containing sequential listi

1990-06-29

1993-03-23

Lee, Thomas C.

Boots, shoes, and leggings

3642318, 3642613, 3642615, 364DIG1, 395425, G06F 900, G06F 1130

Patent

active

051971321

ABSTRACT:
A register map having a free list of available physical locations in a register file, a log containing a sequential listing of logical registers changed during a predetermined number of cycles, a back-up map associating the logical registers with corresponding physical homes at a back-up point in a computer pipeline operation and a predicted map associating the logical registers with corresponding physical homes at a current point in the computer pipeline operation. A set of valid bits is associated with the maps to indicate whether a particular logical register is to be taken from the back-up map or the predicted map indication of a corresponding physical home. The valid bits can be "flash cleared" in a single cycle to back-up the computer pipeline to the back-up point during a trap event.

REFERENCES:
patent: 4574349 (1984-03-01), Rechtschaffen
patent: 4587612 (1986-05-01), Fisk et al.
patent: 4612612 (1983-08-01), Woffinden et al.
patent: 4646236 (1987-02-01), Crockett et al.
patent: 4725947 (1984-08-01), Shonai et al.
patent: 4752873 (1986-05-01), Shonai et al.
patent: 4769770 (1988-09-01), Miyadera et al.
patent: 4777594 (1984-02-01), Jones et al.
patent: 4794518 (1988-12-01), Mizushima
patent: 4901233 (1987-07-01), Liptay
I.B.M. Technical Disclosure Bulletin Articles: vol. 24, No. 3, Aug. 1981, "General Purpose Register Extension" by S. M. Desai, pp. 1404-1405.
I.B.M. Technical Disclosure Bulletin Articles: vol. 29, No. 3, Aug. 1986, "Use of the Second Set of General . . . Resolution", by P. G. Emma et al., pp. 991-993.

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