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AR: tcontrol.mie applies to all traps, not just breakpoints #880

Merged
merged 1 commit into from
Sep 28, 2023
Merged

AR: tcontrol.mie applies to all traps, not just breakpoints #880

merged 1 commit into from
Sep 28, 2023

Commits on Sep 19, 2023

  1. AR: tcontrol.mie applies to all traps, not just breakpoints 

    Reverts #723, which would result in mepc etc. being clobbered if a
breakpoint trigger would fire in the most privileged mode.

Specifically, consider:
1. icount is set so that it'll trigger on the first instruction of an exception handler.
2. Code takes an exception, saving mepc etc.
3. Now icount fires causing a breakpoint exception, clobbering mepc.
    @timsifive
    timsifive committed Sep 19, 2023
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