[#941] NVIC: Implement ICSR RETTOBASE - #217
Open
PhysicistJohn wants to merge 1 commit into
Open
Conversation
|
|
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
2 participants
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
Related issue
Fixes renode/renode#941
Description
Implements the read-only
ICSR.RETTOBASEbit for Armv7-M and Armv8-M cores.The bit is set when there are zero or one active exceptions and clear when
there are nested active exceptions. Cortex-M0, Cortex-M0+, and Cortex-M1 keep
bit 11 at zero because Armv6-M reserves it.
The explicit model check is needed because Renode currently exposes Armv7
compatibility features for the Cortex-M0 family.
Regression tests cover zero, one, and two active exceptions.
Usage example
The reproduction from renode/renode#941 now reports bit 11 set for an idle
Cortex-M4 NVIC. A native matrix also verifies every currently supported
Cortex-M model.
Additional information
Validated on macOS Arm64 with .NET 8:
dotnet format --verify-no-changes: passed