Module hardware_backend 

Hardware access abstraction for the executor.

The real driver implements MmioBackend over a locally mapped MMIO region; tests and driver realm fakes use FakeMmio. Keeping the trait in the core crate lets the entire read path run on the build host.

Structs

FakeClock

Deterministic test clock advancing by a fixed step per reading.

FakeMmio

In-memory fake MMIO region that records every access, for unit tests and driver realm fakes. Reads of unset offsets return zero.

Enums

BackendError

Errors surfaced by a hardware backend.

Traits

Clock

A source of target monotonic time, injected so core logic is deterministic under test. The driver supplies zx monotonic time.

MmioBackend

Volatile 32-bit MMIO access to one resource.

Timer

An asynchronous timer for delays and polling.