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Hardware-Specific Topics > Flush Register Windows

Flush Register Windows

Darryl Gove, March 7, 2008

The SPARC architecture has an interesting feature called Register Windows. The idea is that the processor should contain multiple sets of registers on chip. When a new routine is called, the processor can give a fresh set of registers to the new routine, preserving the value of the old registers. When the new routine completes and control returns to the calling routine, the register values for the old routine are also restored. The idea is for the chip not to have to save and load the values held in registers whenever a routine is called. This reduces memory traffic and should improve performance.


  

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