* Deal with halt race.
What could happen:
1. hart 1 halts due to a breakpoint
2. OpenOCD polls and notices hart 1 has halted.
3. hart 0 halts because it is in a halt group with halt 1
4. OpenOCD decides to halt hart 0 also.
5. OpenOCD discovers hart 0 is already halted, and doesn't update the
debug reason.
In that case OpenOCD would tell gdb that hart 0 halted, while the
interesting event is that hart 1 halted.
Fix this by updating the debug reason when we discover a hart is already
halted when we try to halt it.
This race was exposed in the Sv* address translation tests, but the bug
has nothing to do with address translation.
Change-Id: I59d871e8545bd644bf42581266f15234b93e9900
Signed-off-by: Tim Newsome <tim@sifive.com>
* Comment set_debug_reason
Co-authored-by: Jan Matyas <50193733+JanMatCodasip@users.noreply.github.com>
Co-authored-by: Jan Matyas <50193733+JanMatCodasip@users.noreply.github.com>
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