[cov] Add tool for generating coverage view #29287
Open
+698
−6
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
sasdf
force-pushed
the
mgT4605a876
branch
6 times, most recently
from
b6f9ef4 to
aab0bee
Compare
sasdf
changed the title
This tool generates a "coverage view" bitmap for OpenTitan firmware, allowing generating coverage reports accurately represent only the code physically present in a specific binary (e.g. ROM_EXT). It's achieved by filtering out functions discarded during the compilation or linking processes. For Ibex binaries, the coverage view is constructed by cross-referencing LLVM coverage metadata with DWARF debug information to identify and exclude stripped functions. For OTBN binaries, the coverage view is derived exclusively from DWARF debug information, as these binaries are not stripped. Change-Id: I1bf00be84a8f19b436ea4629c9d18832da324251 Signed-off-by: Yi-Hsuan Deng <[email protected]>
This change adds `coverage_view_test` targets for all `ROM_EXT` variations and slots in the `rom_ext` BUILD file. Change-Id: I1d1bbfd83982f46df5610dfa1fe71ed9d44e5065 Signed-off-by: Yi-Hsuan Deng <[email protected]>
This change adds a `coverage_view_test` target to the OTBN crypto BUILD file for the `boot` binary. This allows for coverage filtering of the boot code. Change-Id: I4605a87677f1f198cadd34dbb5f65df5ed4332e8 Signed-off-by: Yi-Hsuan Deng <[email protected]>
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
1 participant
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Outdated suggestions cannot be applied.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.
This tool generates a "coverage view" bitmap for OpenTitan firmware, allowing generating coverage reports accurately represent only the code physically present in a specific binary (e.g. ROM_EXT). It's achieved by filtering out functions discarded during the compilation or linking processes.
For Ibex binaries, the coverage view is constructed by cross-referencing LLVM coverage metadata with DWARF debug information to identify and exclude stripped functions.
For OTBN binaries, the coverage view is derived exclusively from DWARF debug information, as these binaries are not stripped.
This
coverage_view_testrules are implemented as tests, rather than standard build artifacts or runnable targets, to enable execution viabazel coverage. This approach avoids expensive test cache invalidations that typically result from dependency or configuration changes.