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arm64: Reduce where we decode msr/mrs instructions
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Authored by andrew on May 6 2025, 5:05 PM.
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Details

Summary

We only use the mrs_Op* and mrs_CR* functions and MRS_* macros when
handling userspace executing a msr/msr instruction.

Move the macros to where they are used and expand the functions to
just use the macros directly.

While here update MRS_Op0_MASK to include bit 20 as this will cause
the correct op0 value to be calculated for all instructions we decode.

Sponsored by: Arm Ltd

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Event Timeline

andrew requested review of this revision.May 6 2025, 5:05 PM
This revision is now accepted and ready to land.May 9 2025, 3:30 PM

Rebase on D50906 to move all MRS_ macros to undefined.c

This revision now requires review to proceed.Jun 17 2025, 1:26 PM
This revision was not accepted when it landed; it landed in state Needs Review.Jun 23 2025, 12:08 PM
This revision was automatically updated to reflect the committed changes.