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by jbrooks
Mon Aug 24, 2015 8:05 pm
Forum: Bare metal, Assembly language
Topic: RPi 2b (Cortex A7) instruction timing?
Replies: 17
Views: 3858

Re: RPi 2b (Cortex A7) instruction timing?

I've been doing quite a bit of assembly coding, profiling, and optimization on the Raspberry Pi 2 lately. Here's my take on how the code is likely to be scheduled by the A7 CPU: debug_wait1: @ ms count in r8 ; cmp+branch usually take 1 cycle combined, though branch mispredicts will stall less if cmp...

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