Commit Graph

169 Commits

Author SHA1 Message Date
Bananymous 7fcbb869e1 Kernel: Initialize GDT in kernel code
We dont use the boot GDT only while booting
2023-03-01 21:21:56 +02:00
Bananymous 7f8cad83b1 Kernel: x86_64 boot script now makes GDT with null, kernel code and data 2023-03-01 21:21:56 +02:00
Bananymous 9756de02ef Kernel: MMU now takes flags when allocating pages 2023-03-01 21:21:56 +02:00
Bananymous 80f9428337 Kernel: Fix prefs font for 32 bit 2023-02-24 03:19:54 +02:00
Bananymous c9ea22f5e2 Kernel: IDT now confirms that it allocated succesfully 2023-02-22 21:48:40 +02:00
Bananymous d9c05b7378 Kernel: rewrite the whole kmalloc (again)
Performance of the old kmalloc implementation was terrible.
We now use fixed-width linked list allocations for sizes <= 60 bytes.
This is much faster than variable size allocation.

We don't use bitmap scanning anymore since it was probably the slow
part. Instead we use headers that tell allocations size and aligment.

I removed the kmalloc_eternal, even though it was very fast, there is
not really any need for it, since the only place it was used in was IDT.

These changes allowed my psf (font) parsing to go from ~500 ms to ~20 ms.
(coming soon :D)
2023-02-22 16:32:50 +02:00
Bananymous 1bd8b0fe5c Kernel: Sleep now actually sleeps and allows idling 2023-02-19 18:52:25 +02:00
Bananymous 6fab26692b Kernel: remove unnecessary function from x86_64 Thread.S 2023-02-02 23:48:18 +02:00
Bananymous 5b5e620d8a Kernel: Improve multithreading support
We can now use arbitary BAN::function<void(...)> as the Thread.
I also implemented multithreading for i386 since it was not done
on the initial multithreading commit.
2023-02-02 23:24:12 +02:00
Bananymous 9b8de5025a All: rename every function from UpperCamelCase to snake_case
This was a mess since I didn't know which to use but now I decided
to go with snake_case :)
2023-02-01 21:05:44 +02:00
Bananymous 337569b0ca Kernel: Implement basic SpinLock 2023-02-01 01:52:52 +02:00
Bananymous cb3b62d665 Kernel: Only allocate single GDT entry during boot.S
When we need more, we should probably initialize rest of them
in cpp code
2023-01-31 18:43:09 +02:00
Bananymous 1687028ed5 Kernel: Add constructor and destructor to MMU 2023-01-30 18:54:04 +02:00
Bananymous 6dc22b7251 Kernel: Add actual register values to x86_64 kernel panic
Very hackish implementation, but we now get actual registers at the
time of the interrupt happening
2023-01-30 18:52:38 +02:00
Bananymous 6418d7cfc3 Kernel: Add Other GDT entries to x86_64 2023-01-26 12:53:04 +02:00
Bananymous 35d2e27292 Kernel: Improve MMU
We don't have to invalidate page in AllocatePage() if we don't make
any changes. We also should not assert on deallocating non-present
pages, just return early :)
2023-01-26 02:57:14 +02:00
Bananymous 589f338357 Kernel: Cleanup IDT register dump inline assembly 2023-01-26 02:57:14 +02:00
Bananymous e87026f01d Kernel: I have no idea what this commit does
I had committed a change in IDT but reverted it now.

This propably only adds a spurious interrupt detection to common cpp
interrupt handler?
2023-01-26 02:55:37 +02:00
Bananymous b315fdc27f Kernel: Finally managed to get 64-bit working
I had weird problems with interrupts but everything should work now
2023-01-25 19:19:28 +02:00