Drew Galbraith
9f3ffbf5b4
Move Process to storing Threads in a linked list.
...
This should really be a vector or hashmap of some sort but this is fine
for now.
2023-05-29 15:08:02 -07:00
Drew Galbraith
5cab9f843e
Move process list to a linked list.
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Add basic iteration ability to the linked list.
2023-05-29 14:59:23 -07:00
Drew Galbraith
71196dc90f
Move scheduler threads to a linked list implementation.
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Removes the internal next ptr from the Thread class.
We avoid doing a memory operation when scheduling on yield because we
simply cycle the item to the back of the list.
2023-05-29 14:32:49 -07:00
Drew Galbraith
a06c9dced4
Add thread and process states.
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Add a thread exit call.
2023-05-29 13:51:03 -07:00
Drew Galbraith
8d87791fa2
Differentiate syscall handler by number.
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This causes us to panic on the unhandled exit syscall.
2023-05-29 13:06:43 -07:00
Drew Galbraith
6f5b65de30
Map user pages in the proper mode.
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This causes the user code to execute succesfully.
However now we don't differentiate between syscalls so we pass right
over the exit syscall and continue executing until we fault.
2023-05-29 13:06:08 -07:00
Drew Galbraith
7184f527a0
Jump to user mode.
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This instantly creates a page fault as we always map pages with ring 0
permissions.
2023-05-29 13:06:08 -07:00
Drew Galbraith
aefb4f082b
Add a kernel ELF module and load it in a new process.
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Don't yet jump to userspace.
2023-05-29 00:32:54 -07:00
Drew Galbraith
f86bbe6ea9
Wireframe for syscalls in place
2023-05-18 16:03:09 -07:00
Drew Galbraith
d3024211a7
Cycle through multiple tasks in multiple processes
2023-05-18 13:56:54 -07:00
Drew Galbraith
7a3b4d2d42
Add true page fault handler.
2023-05-18 13:56:09 -07:00
Drew Galbraith
0d275c72a1
Have processes enqueue their own threads
2023-05-18 13:28:22 -07:00
Drew Galbraith
cb41953354
Scheduler with working threads.
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Currently only one process but it is a start.
2023-05-18 13:24:02 -07:00
Drew Galbraith
960cbf9519
Add Scheduler wireframe.
...
Right now does nothing but has containing classes for process and thread
information.
2023-05-18 12:43:53 -07:00
Drew Galbraith
de2c96b848
Internal many paging_util functions.
2023-05-18 11:40:13 -07:00
Drew Galbraith
fa2bb4df89
Added a PhysicalMemoryManager class.
...
Stores a linkedlist of free blocks of PhysicalMemory.
2023-05-18 11:34:45 -07:00
Drew Galbraith
4380590af2
Add new and delete operator implementations to the kernel heap.
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For now delete does nothing.
2023-05-18 11:29:44 -07:00
Drew Galbraith
2d719d0443
Add a bootstrap physical memory manager.
...
This will allow the real physical memory manager to use allocations.
2023-05-18 11:00:05 -07:00
Drew Galbraith
747c2a4e17
Add a page fault handler
2023-05-18 10:59:45 -07:00
Drew Galbraith
0b7e667368
Add a basic kernel heap object.
...
Currently allocation always fails because we don't
have a way to allocate a physical page.
2023-05-18 10:59:39 -07:00
Drew Galbraith
45b5817a36
Recursively map the PML4
2023-05-18 02:00:01 -07:00
Drew Galbraith
b3f8cb9003
Dump the memory map from limine.
...
Also adds the ability to print formatted messages.
2023-05-18 01:16:53 -07:00
Drew Galbraith
9fc1aa15ef
Add an interrupt descriptor table.
...
Set up a very basic handler for divide by zero and
general protection faults.
2023-05-17 22:54:37 -07:00
Drew Galbraith
3e1a1f7485
Add a qemu debug option and gdb init file.
2023-05-17 22:53:32 -07:00
Drew Galbraith
03fe4d8c2e
Load our own GDT.
...
Replace the GDT from limine with our own.
2023-05-17 21:41:08 -07:00
Drew Galbraith
872e6f3392
Add a debug output utility.
2023-05-17 20:42:59 -07:00
Drew Galbraith
c2af2eee97
Add compile_commands.json to .gitignore
2023-05-17 20:42:21 -07:00
Drew Galbraith
559d00e872
Add a clang format spec
2023-05-17 20:30:15 -07:00
Drew Galbraith
91b52f1872
Move IO Port Function to a separate file
2023-05-17 20:26:51 -07:00
Drew Galbraith
a164d9d67c
Boot directly into AcadiaOS
2023-05-17 20:26:20 -07:00
Drew Galbraith
e9705f7579
Barebones Kernel Commit
...
Uses limine to boot off of a disk.
Outputs a character to the debug port.
2023-05-17 20:20:53 -07:00
Drew Galbraith