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arm64: Support hardware breakpoints

Authored by andrew on Mar 14 2024, 3:23 PM.
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As with watchpoints allow the kernel debugger to set hardware
breakpoints on arm64.

These have been tested to work in both the ddb and gdb backends.

Sponsored by: Arm Ltd
Sponsored by: Innovate UK

Diff Detail

rG FreeBSD src repository
Lint Not Applicable
Tests Not Applicable

Event Timeline

jhb added a subscriber: jhb.

Modulo dropping support for the count argument from kdb_cpu_clr_breakpoint.

This revision is now accepted and ready to land.Mar 19 2024, 5:34 PM
This revision now requires review to proceed.Mar 21 2024, 4:22 PM
This revision was not accepted when it landed; it landed in state Needs Review.Apr 12 2024, 9:38 AM
This revision was automatically updated to reflect the committed changes.