Merged
Conversation
arichardson
force-pushed
the
rvy093-shadd
branch
from
97207b0 to
ec79ced
Compare
For standard versions up to 0.9.5 we replaced the existing shadd instructions, in 0.9.6 we add new encodings instead. Co-authored-by: Alexander Richardson <alexrichardson@google.com>
These instructions follow the SHXAdd instructions the difference is that we only take the bottom word of rs1 and zero extend. For standard versions up to 0.9.5 we replaced the existing shadd instructions, in 0.9.6 we add new encodings instead. Co-authored-by: Alexander Richardson <alexrichardson@google.com>
Part of the Zba extension this implements the add.uw instruction. This was removed in version 0.9.6 of the CHERI spec since we found no uses of this instruction in real-world code. Co-authored-by: Alexander Richardson <alexrichardson@google.com>
arichardson
force-pushed
the
rvy093-shadd
branch
3 times, most recently
from
2650e89 to
8a242f0
Compare
This was removed in 0.9.6 so is guarded by TARGET_CHERI_RISCV_STD_093
These are mode-dependent in 0.9.5 and older, and always capability-based sh4addy(.uw) in 0.9.6. This depends on zish4add extension that was removed in 0.9.6, so is guarded by 0.9.3 #ifdefs. Co-authored-by: Paul Buxton <paul.buxton@codasip.com>
arichardson
force-pushed
the
rvy093-shadd
branch
from
8a242f0 to
e5b29dc
Compare
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Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be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.
To be merged after #292