Drew Galbraith
d99624daf6
[zion] Move to using the LAPIC timer over the PIT.
2023-08-01 20:18:47 -07:00
Drew Galbraith
c35cef65fe
Don't mistakenly mask interrupts in user space
2023-06-12 19:01:09 -07:00
Drew Galbraith
bd32e85164
Fix race condition in page fault handler.
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We enabled interrupts before getting the value of cr2 in the handler.
If the handler was preempted, cr2 could have been overriden by a page
fault in a separate thread or process.
2023-06-07 22:24:50 -07:00
Drew Galbraith
629dca278b
Enable the PIC and add a timer.
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This causes a GP fault after the timer runs for some time.
2023-05-29 21:52:01 -07:00
Drew Galbraith
747c2a4e17
Add a page fault handler
2023-05-18 10:59:45 -07:00
Drew Galbraith
9fc1aa15ef
Add an interrupt descriptor table.
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Set up a very basic handler for divide by zero and
general protection faults.
2023-05-17 22:54:37 -07:00
Drew Galbraith