f8154ce230
Kernel: Implement mkdir() from a single path
...
This is done using dirname() and basename() :)
2022-10-16 14:45:25 +02:00
62d631f1b4
Kernel: Rename assert.h to kassert.h so IDEs pickup the kernel header instead of the userspace one
2022-10-15 12:56:48 +02:00
97461c7c1f
Prepare for moon 0.11
2022-10-14 19:49:52 +02:00
cdb73836b0
Some more multiple address space stuff
...
This page-faults. This is because the memory where the ELF should be is all zeroes, which the CPU tries to interpret.
2022-10-14 17:37:51 +02:00
26211bd49f
It (almost) works now
...
The only thing doing weird stuff is exec(), so that's commented out and throws ENOSYS right now.
But we have two user tasks running in parallel, isolated from each other!
2022-10-14 16:46:00 +02:00
24272c57ef
Almost there!
2022-10-13 21:55:51 +02:00
ee712432bd
Some more multiple address space stuff
...
This page-faults. This is because the memory where the ELF should be is all zeroes, which the CPU tries to interpret.
2022-10-13 21:14:39 +02:00
229b06c63b
Add basic address space infrastructure
2022-10-13 19:19:51 +02:00
0c451e504e
Kernel: Mounting /dev MUST succeed
2022-10-11 19:53:55 +02:00
04da26bff5
kernel: add a few comments
2022-10-11 19:51:24 +02:00
0131193379
ELFLoader, Scheduler: Transition to use VFS
...
We should start to drop the old InitRD API, which only allows for files to be loaded from the initrd, and which forces pathnames to be relative (bin/init)
With VFS, we can load any kind of file from any kind of filesystem, and using paths that make sense (/bin/init)
2022-10-11 19:33:48 +02:00
86b50a6aa0
Remove random demos
...
Cool, but cumbersome in practice: have to continually restart until I get the demo I want.
So let's stick to init for now.
2022-10-11 19:25:19 +02:00
0a7d4a530d
VFS, DeviceFS: Implement a device filesystem
...
For now, we just have a version device. (this will allow us to get rid of sys_getversion!!)
More should be implemented soon.
2022-10-11 19:21:16 +02:00
4aa3da8c12
VFS: Add basic mount(), unmount() and mkdir() functions (not accessible to userspace yet)
2022-10-11 18:23:00 +02:00
7a097f16ea
apps: add a new example app which does all kinds of stdio misbehaving >.<
2022-10-11 17:31:06 +02:00
667d308fc3
kernel/main.cpp: remove obsolete reference to _userspace
2022-10-11 17:30:40 +02:00
bbe7c6e658
VFS: Implement resolve_path and form the initial ramdisk's VFS properly
...
Finally, resolve_path: a function which takes a path (/etc/fstab for example), and walks the VFS:
In this case, it would start with the root FS node, and ask it: "do you have a directory/file named etc?"
The node could say 'yes', 'no', or 'i'm not a directory, I'm a file' (should not be the case for the VFS root, but for the other ones it could be)
If it says yes, we continue and ask the child if it has a file named fstab. Etc...
2022-10-10 18:44:43 +02:00
2be70d0bc1
VFS: Use 64-bit numbers in read()
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There is no need for any kind of 32-bit compatibility.
2022-10-09 21:30:38 +02:00
b38c52f8c7
more vfs stuff
2022-10-08 21:35:19 +02:00
f3d7e220ac
The beginnings of a VFS implementation!!
2022-10-08 21:22:46 +02:00
f83a6ace51
Kernel, libc: Add support for providing a status code to exit()
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The exit() libc function already accepted an integer, but didn't pass it on to the kernel since we had no mechanism for it to do that.
Now, the kernel stores a task's exit status to display it later (and in the future, return it to userspace via wait()/waitpid())
2022-10-08 17:56:40 +02:00
b7ee746da3
Kernel: Enable even more warnings
2022-10-07 18:10:20 +02:00
594d79143e
Kernel: enable -Wconversion
2022-10-06 17:13:34 +02:00
5d8b825659
Add a few example apps/demos in C, and make the kernel choose a random one to demonstrate every boot
2022-10-03 21:24:38 +02:00
87cb41e549
Separate the logging stack into toggleable backends, to disable console logging once boot finishes.
2022-10-01 15:35:11 +02:00
0e46ea8ada
Finally, a text renderer that actually works. We can now see the kernel messages without a serial port :)
2022-10-01 14:27:45 +02:00
30411b4b78
Fix hackiness in converting a uint32_t to a Color, by providing a function to do so
2022-10-01 13:08:47 +02:00
66bee86a8b
Scheduler: add a load_user_task function that directly loads a file from the initrd
2022-10-01 12:28:32 +02:00
1c4383dea4
Add an apps/ folder and build-system to build userspace apps which can now be loaded from the initrd
2022-10-01 12:17:16 +02:00
692221dd9e
GO FAST WHEEEEEEEEEEEEEEEE (pit tick 1 time per millisecond, so 1ms accuracy instead of 2ms like before)
2022-09-25 22:00:36 +02:00
07d6fe388d
Fix naming
2022-09-25 21:43:28 +02:00
f1a7138568
User mode (with a few syscalls)
...
IT ACTUALLY WORKS NOW.
Why wasn't it working? Oh, because I was not setting already present page tables's permissions to user mode. Just a little bug. THAT I SPENT DAYS TRYING TO FIND
Anyways, it works now. Such a relief...
2022-09-25 20:35:05 +02:00
aee4e55fdd
add a proper kernel panic
2022-09-25 16:56:00 +02:00
6fc7608c35
main: remove kmalloc/kfree example
2022-09-24 23:18:44 +02:00
6bd3529f32
Port liballoc to get proper kmalloc/kcalloc/krealloc/kfree functions.
...
Yes, that's not completely-from-scratch.
But let's be honest, am I going to do everything from scratch? Probably not. I'm not making my own bootloader.
And making a proper smaller-than-4-KB allocator is not something I want to do.
Plus, liballoc works perfectly in this rewrite, seeing as the MM code actually works, instead of leaking all your poor memory
And liballoc_{lock, unlock} can be actually defined, since we have spinlocks here!
2022-09-24 22:40:59 +02:00
3891d0c52e
Rename KernelMemoryManager to MemoryManager
...
Kind of a more catchy name, isn't it?
2022-09-24 21:45:13 +02:00
46b7dab847
Remove RangeAllocator and make a PMM namespace
2022-09-24 21:27:45 +02:00
56ace11bb1
Copy "hello.size" bytes from hello instead of 512, who knows what there is in there...
2022-09-23 18:03:20 +02:00
7b8d30aacd
Add a Device class to PCI and a PCITypes file for string names for PCI device types
2022-09-23 18:01:07 +02:00
8a93c53277
Add a Device class to PCI
2022-09-23 17:24:45 +02:00
c3e5251687
Some more userland and font failing
2022-09-23 16:41:43 +02:00
ec01dc2927
Scheduler: Change fixed Task array for (highly inefficient) memory allocation, add userspace task support (which as memory is mapped kernel-only instantly crashes), and support for exiting a task (marking it as exited and reaping it later)
2022-09-21 21:06:00 +02:00
af8e5aca64
Add basic PCI driver
2022-09-21 17:57:02 +02:00
49ddb47ad4
Reorganize structure
2022-09-21 17:56:53 +02:00
e83d4c8ac9
Use a faster PIT tick rate
2022-09-21 07:29:44 +02:00
29f0253e5b
Little colorful demo
2022-09-20 20:49:31 +02:00
1c12cf016e
Add a Scheduler.
...
Finally.
Just Round Robin with sleeping, but it's still awesome. I think this can finish v0.3, with a few adjustments.
2022-09-20 19:58:04 +02:00
1c1aa96293
Add a moon_version function that returns the full version string
2022-09-20 16:34:24 +02:00
6967fa9117
Update config.h to use a .cpp file that will be recompiled when it changes
2022-09-20 16:30:34 +02:00
efb28d3258
Randomness and stack protection!!
2022-09-14 18:54:40 +02:00
