drew/acadia
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87 commits 2 branches 1 tag 1.7 MiB
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25 commits

Author SHA1 Message Date
Drew Galbraith
add533071b Use APIC for interrupts rather than PIC. 
Still rely on the PIT for now rather than the local APIC timer.
 2023-06-07 13:40:36 -07:00
Drew Galbraith
81b925eea0 Add a basic IPC setup with Channel Object. 
Pass a process a channel endpoint on startup that it will use to
get it's initial capabilities.
 2023-06-07 08:24:10 -07:00
Drew Galbraith
eb454300e6 Move elf loader into the init loader in the kernel 2023-06-07 00:08:21 -07:00
Drew Galbraith
b06c76e477 Create a MemoryObject class and use it to load programs. 2023-06-06 21:44:10 -07:00
Drew Galbraith
1fda0f3fae Move VirtualMemory to AddressSpace Object 2023-06-06 20:43:15 -07:00
Drew Galbraith
b5ad454ad1 Move Process & Thread to the object folder. 2023-06-06 20:18:53 -07:00
Drew Galbraith
ef8eb5d993 Add a threading syscall API. 2023-06-06 16:24:03 -07:00
Drew Galbraith
2eefda6114 add a class to allocate and manage user space stacks 2023-05-30 22:35:57 -07:00
Drew Galbraith
f22dd66c8d Manage KernelStacks separately rather than just allocing bytes. 
Create a global KernelStackManager that will handle the relevant allocs.
 2023-05-30 21:28:44 -07:00
Drew Galbraith
7fe6c24aa5 Add a ProcessManager class to store Process objects. 
Trying out a new method for exposing global objects directly via a
variable.
 2023-05-29 23:35:44 -07:00
Drew Galbraith
629dca278b Enable the PIC and add a timer. 
This causes a GP fault after the timer runs for some time.
 2023-05-29 21:52:01 -07:00
Drew Galbraith
7184f527a0 Jump to user mode. 
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. 
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
cb41953354 Scheduler with working threads. 
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
4380590af2 Add new and delete operator implementations to the kernel heap. 
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
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
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
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