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Code Pull Requests Activity
648 Commits 1 Branch 0 Tags
67886b0c5a267d4d1cf45df4785b4e06eead9c27
Commit Graph

27 Commits

Author SHA1 Message Date
Bananymous
67886b0c5a Kernel: Move V2P and P2V to Memory/Types.h 2023-05-30 23:57:03 +03:00
Bananymous
81cf389754 Kernel: Booting with higher half kernel gets to Heap initialization 2023-05-30 22:21:12 +03:00
Bananymous
5bb1f2a48c Kernel: Rename MMU to PageTable 
This is more descriptive name for what it actually represents
 2023-05-29 21:06:09 +03:00
Bananymous
09666adc53 Kernel: fork() now copies allocations through FixedWidthAllocator 2023-05-28 21:34:35 +03:00
Bananymous
ec73db0057 Kernel: Move page macros to Types.h 2023-05-28 21:03:08 +03:00
Bananymous
f04399c3a0 Kernel: fork() now copies allocation done through GeneralAllocator 2023-05-28 20:37:39 +03:00
Bananymous
3e93dae53c Kernel: Add invalidate() to MMU 2023-05-28 18:05:49 +03:00
Bananymous
15842db83e Kernel: Move PhysicalRange to its own file and add VirtualRange 2023-05-28 17:48:34 +03:00
Bananymous
869de7283f Kernel: MMU::get() is now MMU::kernel 
MMU is can now be locked with RecursiveSpinLock.

Scheduler now has get_current_tid() that works before the Scheduler
is initialized. This allows RecursiveSpinLock usage early on.
 2023-05-28 16:18:18 +03:00
Bananymous
e0a7e242f8 Kernel: Add MMUScope 
This disables interrupts and loads specified mmu for the
scope it lives in
 2023-05-16 00:26:39 +03:00
Bananymous
6acb86c14b Kernel: MMU keeps track of the current 2023-05-16 00:26:39 +03:00
Bananymous
512be884ed Kernel: Add barebones GeneralAllocator for >4096B 2023-05-08 22:10:49 +03:00
Bananymous
f1667b398a Kernel: FixedWidthAllocator operates on MMU 
Instead of Process* we use MMU& in FixedWidthAllocator since it is
everything it actually needs :)
 2023-05-08 00:06:56 +03:00
Bananymous
b0ec0f1a1a Kernel: We add FixedWidthAllocators on demand 
On SYS_ALLOC we will add a new FixedWidthAllocator if the old ones
are already full or we don't have one with proper size. This allows
arbitary number of allocations as long as you have enough memory
available :)

Next I will be writing a general allocator for allocations larger
than 4096 bytes which should make SYS_ALLOC syscall complete :)
 2023-05-07 23:57:01 +03:00
Bananymous
12e42f40c5 Kernel/LibC: add free function for FixedWidthAllocator 
I have to rework the syscall API and allocators in process. For
now this works well enough :)
 2023-05-07 01:21:50 +03:00
Bananymous
bcfd838131 Kernel: Add basic fixed width allocator for userspace 
We have to move process stacks to the general heap and maybe map
kernel to higher half.
 2023-05-06 19:58:08 +03:00
Bananymous
9c07add00f Kernel: Invalid physical addresses from heap are specified now by 0 2023-05-06 17:34:22 +03:00
Bananymous
f36b94d039 Kernel: MMU can now provide info about virtual address space 2023-05-06 17:34:22 +03:00
Bananymous
e7a170c89f Kernel: 64 bit MMU now properly identity maps kernel 2023-05-05 14:19:28 +03:00
Bananymous
55bb0084aa Kernel: namespace and function renames 
MMU moved to namespace kernel
Kernel::Memory::Heap moved to just Kernel
MMU::map_{page,range} renamed to identity_map_{page,range}

Add MMU::get_page_flags
 2023-04-28 14:48:38 +03:00
Bananymous
b1c7af38d0 Kernel: Add barebones per process virtual addresses 
We now assign every (userspace) process its own MMU which we load
in scheduler. This allows every process to have separate virtual
address space.

This is very hackish implementations but it works for now
 2023-04-20 00:45:41 +03:00
Bananymous
ea0c9b639f Kernel: Add some bareboness functionality to map virtual addresses 2023-04-19 23:51:36 +03:00
Bananymous
0030f035be Kernel: Rename MMU::{un,}allocate... to MMU::{un,}map 
This is more appropriate name for the behaviour :D
 2023-04-19 21:50:30 +03:00
Bananymous
96ac072166 Kernel: Heap allows us to take free pages. 
The API is kinda weird and will probably be reworked in near future
but this will work for now :)
 2023-04-18 10:18:15 +03:00
Bananymous
bf0c7b9ae8 Kernel: Heap implementation can now give free pages from all of RAM 2023-04-18 10:18:15 +03:00
Bananymous
633929629c Kernel: Start working on heap 2023-04-18 10:18:15 +03:00
Bananymous
fdb4eb6042 Kernel: Move kmalloc and MMU to Memory directory 2023-04-18 10:18:15 +03:00