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Multicore Platform General Purpose Registers

Shengye Wan over 6 years ago

Hi, experts Ash Wilding Mark Nicholson,

I'm wondering for the multicore ARM architecture, are all CPU cores sharing one set of general purpose registers (X0 - X30) or each CPU core has its separate registers? My feeling is that each core has its own set of registers while I don't find any document to support the thought.

If there is any document describes this issue, please share the doc with me and so I can get more details, thank you!

Simon

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Ash Wilding over 6 years ago +1 verified

Hi Simon, The Arm Architecture uses the term "Processing Element" (or "PE" for short) to refer to something that can execute Arm instructions. Each PE in a system has its own register file (i.e. unique...