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68 Commits

Author SHA1 Message Date
Bananymous f33e78882e Kernel: Add argc and argv to process entry 2023-05-16 00:27:49 +03:00
Bananymous 812e61ca70 Kernel: Add barebones GeneralAllocator for >4096B 2023-05-08 22:10:49 +03:00
Bananymous 2d0a5a9e15 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 f32d594879 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 2fe9af7165 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 ff5bcd4416 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 b65cd1d09b Kernel: Invalid physical addresses from heap are specified now by 0 2023-05-06 17:34:22 +03:00
Bananymous f139fc2229 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 d9068eebb5 Kernel: kmalloc does not dump stack trace 
dump_stack_trace() page faults and i dont feel like debugging this
now :)
 2023-04-21 13:45:13 +03:00
Bananymous b3eeb6412f Kernel: Add some bareboness functionality to map virtual addresses 2023-04-19 23:51:36 +03:00
Bananymous d38470c8e2 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 a159c980ee Kernel: kmalloc will always print debug on failed alloc 2023-04-19 18:05:01 +03:00
Bananymous 5494e2c125 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 821d065eba Kernel: Handle some Heap edge cases 2023-04-18 10:18:15 +03:00
Bananymous 1aac3a0425 Kernel: Heap implementation can now give free pages from all of RAM 2023-04-18 10:18:15 +03:00
Bananymous a180e72b6f Kernel: Start working on heap 2023-04-18 10:18:15 +03:00
Bananymous 2de64b592d Kernel: Kmalloc now has its memory statically allocated 
We don't use the memory map given by bootloader since this automatically
maps the memory to a available space.
 2023-04-18 10:18:15 +03:00
Bananymous 9c0f3dd996 Kernel: Move kmalloc and MMU to Memory directory 2023-04-18 10:18:15 +03:00