Programmable high watermark in stack frame cache using second re

Details Programmable high watermark in stack frame cache using second re Programmable high watermark in stack frame cache using second re

1994-09-28

1997-06-03

An, Meng-Ai T.

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395478, 395872, 395873, 3642405, 364243, 3642434, 36424341, 364244, 3642441, 364246, 3642462, 364247, 364267, 364DIG1, G06F 1300

Patent

active

056363621

ABSTRACT:
A programmable high watermark for a stack frame cache for eliminating frame spills initiated by certain critical events. A stack frame cache in a microprocessor is divided into two regions. The second region in the stack frame cache is reserved for context switches initiated by high priority events. Low priority events will result in a frame spill when the first region of the stack frame cache is filled. A high priority event will utilize the second region of the stack frame cache for a context switch if the first region is filled, thus eliminating the need for a reference to off-chip main memory.

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