lp:zephyr-qemu

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Branches

Name Last Modified Last Commit
master 2020-07-04 04:31:41 UTC
ARC: Fix icount support

Author: Alexey Brodkin
Author Date: 2020-07-03 21:52:00 UTC

ARC: Fix icount support

Looks like we have everything in place for using icount except
we don't take care about I/O.

Given writes to AUX register:
 a) May lead to IRQ (if we change ARC Timer LIMIT or COUNT regs)
 b) Via ARc Timers interact with host's time
 b) Anyways are often used to access some kind of peripherals or even
    specific ARC internals which might be treated as I/O

Let's mark TB's where we execute LR/SR instructions as possible I/O.

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>

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