Bananymous
072954480d
Kernel: Remove obsolete Ext2FS::ext2_root_inode()
...
This was not used by anyone and the cast was wrong anyway
2023-03-21 18:19:48 +02:00
Bananymous
3652d11059
Kernel: Remove for_each_block from Ext2
2023-03-21 18:14:02 +02:00
Bananymous
54824aec74
Kernel: Cleanup font parsing
...
We use now the LittleEndian<> wrapper for PSF2 header and no more
magic constants in code
2023-03-20 19:48:08 +02:00
Bananymous
75e85def83
Kernel: prefs font does not allocate extra buffer
2023-03-20 19:48:01 +02:00
Bananymous
f9ae1f0023
Kernel: Fix PC Screen font parsing
...
I had misread the format and the parsing code was incorrect. I also
changed fonts to store unicode codepoints as 32 bit integers, so
every character can be represented
2023-03-20 14:52:42 +02:00
Bananymous
896b4c280c
Kernel: Font parsing uses Spans now
2023-03-20 13:35:54 +02:00
Bananymous
e4bcd98904
Kernel: Add basic mounting to VFS.
2023-03-19 05:51:25 +02:00
Bananymous
3570764448
Kernel: Add comparison operator for inodes
2023-03-19 03:34:23 +02:00
Bananymous
b41491e205
Kernel: Add cksum to Shell for file read testing
...
I also removed the 'using namespace BAN'
2023-03-18 03:50:24 +02:00
Bananymous
8236598f9d
Kernel: Optimize Ext2 disk reads
...
We used to read whole file until we reached the asked offset.
Now we can calculate the appropriate block and read just the asked data.
2023-03-18 03:47:59 +02:00
Bananymous
1a26a318a4
Kernel: Rework filesystem reading
...
We now read from a filesystem to user provided buffer.
Read sizes are determined by read call.
You should now get file descriptors and do reading through Process::current()
2023-03-17 21:18:41 +02:00
Bananymous
1f2ceeb329
Kernel: VFS caches currently open inodes
2023-03-16 15:31:33 +02:00
Bananymous
1b7625581d
Kernel: Add basic concept of Processes
...
We now create Shell as a process that has its own threads
2023-03-16 12:17:04 +02:00
Bananymous
c012822d49
BAN: Rename StringView suffix from _sv to sv
2023-03-16 12:15:16 +02:00
Bananymous
8b8e3cbbf0
Kernel/Userspace: Start initial work on userspace and syscalls
2023-03-13 15:32:46 +02:00
Bananymous
af854ec9e1
Kernel: Thread creation now takes void(*)() as entry and void* as data
...
This simplifies threading for the future and gets rid of (undefined?)
cast of member function pointer to address
2023-03-09 15:33:42 +02:00
Bananymous
8dbece9119
Kernel: kmalloc minimum align is forced to s_kmalloc_min_align
2023-03-09 14:37:25 +02:00
Bananymous
8940ff8002
Kernel: You don't have to check whether VFS is initialized or not
...
VFS now returns Error when attempting to traverse inodes if it did
not find root partition
2023-03-09 02:31:24 +02:00
Bananymous
fc58baf54d
Kernel: if VFS initialization does not find root, we fail
2023-03-09 02:17:42 +02:00
Bananymous
2e6e0d0ef5
Kernel: FIX ubsan complaining about unaligned addresses for STDHeaders
2023-03-08 22:55:44 +02:00
Bananymous
371dfe8ef3
BAN: Formatter now uses perfect forwarding on its arguments
2023-03-08 21:31:26 +02:00
Bananymous
7458f68c38
BAN: Error can now be constructed from c_string or format string
...
If the resulting string would overflow, we just truncate it to fit
the error message buffer (128) bytes
2023-03-08 17:05:37 +02:00
Bananymous
d90aba0963
Kernel: Create CriticalScope and fix kmalloc
...
This disables interrupts for the current scope and restores them
after the scope. This is used in kmalloc, since scheduler might
call into kmalloc/kfree, but deadlock if some thread is currently
trying to allocate. This allows us to use kmalloc in Scheduler.
2023-03-08 13:55:53 +02:00
Bananymous
a068d828fe
Kernel: ATA reads go through the ata controller and not only device
2023-03-08 03:26:25 +02:00
Bananymous
1dabe7a222
Kernel: More rework on Scheduler
2023-03-08 03:26:25 +02:00
Bananymous
e7a577f54a
Kernel: fix includes
2023-03-08 03:26:25 +02:00
Bananymous
23b3028e15
Kernel: Rename RefCounted -> RefPtr and implement RefCounted
2023-03-08 03:26:25 +02:00
Bananymous
f7ebda3bf1
Kernel: Move interrupt related functions to InterruptController
2023-03-08 03:16:51 +02:00
Bananymous
b5673278c4
Kernel: Disable color after Debug::dump_stack_trace
2023-03-08 02:41:44 +02:00
Bananymous
0b62729887
Kernel: Scheduler sleeping is working
...
We have to disable optimization for one function, but I'm working
on a fix
2023-03-08 02:41:44 +02:00
Bananymous
b8ee77eb78
Kernel: Initial work on new scheduler with queues
...
Sleeping is definately broken
2023-03-08 02:41:44 +02:00
Bananymous
a9acf1f6dc
Kernel: PCIDevice is now class with getters and constructor
2023-03-08 02:41:44 +02:00
Bananymous
42c33ebfb3
Kernel: kmalloc aligns size to s_kmalloc_min_align
...
We don't get unaligned memory anymore from kmalloc
2023-03-08 02:41:44 +02:00
Bananymous
ed18d86f08
Kernel: Fix spinlock unlocking in x86_64
...
Spinlock unlock used a 64 bit write on 32 bit integer, overwriting
some random memory. This caused some really hard to find bugs
2023-03-08 02:41:44 +02:00
Bananymous
df8811fc1a
Kernel: Remove "a" from .section .text
2023-03-07 01:57:09 +02:00
Bananymous
8a52c0f9d7
Kernel: Cleanup RSDP parsing code
2023-03-07 00:41:13 +02:00
Bananymous
06db890d49
Kernel: Add ubsan
...
My brain has been melting since I'm getting very random bugs.
I hope I can debug them better with ubsan :)
2023-03-06 23:38:05 +02:00
Bananymous
d5f302a68b
Kernel: kmalloc now uses two locks
...
One for fixed allocations and one for general allocations
2023-03-06 12:40:35 +02:00
Bananymous
f1f5e76636
Kernel: kmalloc requires alignment to be power of two
2023-03-02 22:31:13 +02:00
Bananymous
52aa98ba25
Kernel+LibC: Add some errno codes
...
Kernel now returns ENOMEM and other errnos, so we dont have to write
error messages
2023-03-02 21:10:44 +02:00
Bananymous
90a7268e5a
BAN: Rewrite RefCounted to return ErrorOr
2023-03-02 12:30:11 +02:00
Bananymous
1dd61e93b6
Kernel: Threads cannot take arguments anymore
2023-03-02 01:56:09 +02:00
Bananymous
4d8bdec16d
Kernel: fix i386 MMU
2023-03-02 00:47:29 +02:00
Bananymous
7fcbb869e1
Kernel: Initialize GDT in kernel code
...
We dont use the boot GDT only while booting
2023-03-01 21:21:56 +02:00
Bananymous
7f8cad83b1
Kernel: x86_64 boot script now makes GDT with null, kernel code and data
2023-03-01 21:21:56 +02:00
Bananymous
ba8c4dbc7f
Kernel: panic now disables interrupts as the first thing
2023-03-01 21:21:56 +02:00
Bananymous
9756de02ef
Kernel: MMU now takes flags when allocating pages
2023-03-01 21:21:56 +02:00
Bananymous
7d84f290a1
Kernel: Add lock to Disk reads before I forget
2023-02-26 03:48:11 +02:00
Bananymous
ee5d02aa70
Kernel: Rewrite basically all current disk io stuff
...
This is a big commit that was kinda hard to split to smaller ones.
Essentially we now look at all the mass storage devices from PCI
and initialize (P)ATA devices. This doesn't provide any more functionality
but better abstractions and everything doesn't have to be on its old
default port that might be different for modern computers.
2023-02-26 03:00:29 +02:00
Bananymous
40cf68a22a
Kernel: Shell now sleeps through Scheduler and doesn't 'hlt'
...
ls doesn't crash when trying to list file
2023-02-26 02:57:27 +02:00
Bananymous
04bb08d27f
Kernel: Add basic PCI enumeration
2023-02-26 02:56:53 +02:00
Bananymous
34f9912a1d
Kernel: Add IO functions inl, outl, and ins{b,w,l} to read into buffer
2023-02-24 12:39:38 +02:00
Bananymous
80f9428337
Kernel: Fix prefs font for 32 bit
2023-02-24 03:19:54 +02:00
Bananymous
390a747768
Kernel: Add prefs font for terminal output before file system
2023-02-23 01:22:50 +02:00
Bananymous
a4980acc88
Kernel: Fonts can now be parsed from the filesystem and set to terminal
...
We currently dont have a fallback font if we cannot get to filesystem
initialization, but that will come later. I can't test on real hardware
for this reason.
2023-02-22 22:29:31 +02:00
Bananymous
0e668738dc
Kernel: Make some basic bitmap font parsing code
2023-02-22 22:28:12 +02:00
Bananymous
a3e9e7d125
Kernel: Fix some shell commands
2023-02-22 21:55:32 +02:00
Bananymous
4cd99c71ca
Kernel: kmalloc uses now spinlock and fix kmalloc_fixed()
2023-02-22 21:49:28 +02:00
Bananymous
c9ea22f5e2
Kernel: IDT now confirms that it allocated succesfully
2023-02-22 21:48:40 +02:00
Bananymous
d9c05b7378
Kernel: rewrite the whole kmalloc (again)
...
Performance of the old kmalloc implementation was terrible.
We now use fixed-width linked list allocations for sizes <= 60 bytes.
This is much faster than variable size allocation.
We don't use bitmap scanning anymore since it was probably the slow
part. Instead we use headers that tell allocations size and aligment.
I removed the kmalloc_eternal, even though it was very fast, there is
not really any need for it, since the only place it was used in was IDT.
These changes allowed my psf (font) parsing to go from ~500 ms to ~20 ms.
(coming soon :D)
2023-02-22 16:32:50 +02:00
Bananymous
5d31e89574
Kernel: Update ErrorOr API and add path find to VFS
...
These two are done on the same commit since Changes to Shell were
annoying to make work with only one change
2023-02-22 01:23:11 +02:00
Bananymous
038379274e
Kernel: Inode can now return full mode value
...
Kernel::Inode::Mode is an union of bitmasked fields for every
possible bit
2023-02-20 21:39:24 +02:00
Bananymous
efaca469ee
Kernel: Ext2Inode now supports indirect blocks through for_each_block()
2023-02-20 10:25:15 +02:00
Bananymous
80006ea137
Kernel: Initial work on filesystem
...
We support now ext2 directory listing. File reading is not yet supported.
2023-02-20 01:46:00 +02:00
Bananymous
247f03c79e
BAN: Make ErrorOr<> have attribute [[nodiscard]]
...
We don't have to specify it everytime we make function return ErrorOr
2023-02-19 20:10:30 +02:00
Bananymous
feaeee11e5
Kernel: fix ARCH() macro and add helper macros for push/pop
2023-02-19 18:52:25 +02:00
Bananymous
0506fee34a
Kernel: Shell's thread now uses sleep instead of polling
...
Also added 'sleep' command that just sleeps for 5 seconds
2023-02-19 18:52:25 +02:00
Bananymous
1bd8b0fe5c
Kernel: Sleep now actually sleeps and allows idling
2023-02-19 18:52:25 +02:00
Bananymous
8f1b6da2af
Kernel: Use Vector instead of raw poiters in Disk stuff
...
We now don't have to manually free allocated data
2023-02-16 20:48:41 +02:00
Bananymous
460fc3a29f
Kernel: Start working on filesystem
...
We have a basic PATA driver (for reading) and gpt parser.
2023-02-16 20:00:31 +02:00
Bananymous
94cbacc998
Kernel: PIT now has very barebones sleep
2023-02-16 17:53:25 +02:00
Bananymous
1b45b4d728
Kernel: Remove unnecessary BOCKS_BREAK()
2023-02-16 17:52:39 +02:00
Bananymous
6a133782ed
All: Move to c++20
2023-02-09 23:05:26 +02:00
Bananymous
fb7fe73d49
Kernel: Add inw and outw to IO
2023-02-04 23:37:34 +02:00
Bananymous
6fab26692b
Kernel: remove unnecessary function from x86_64 Thread.S
2023-02-02 23:48:18 +02:00
Bananymous
2161528cb6
Kernel: Shell is now launched as a capturing lambda
2023-02-02 23:27:51 +02:00
Bananymous
cdbad56ed7
Kernel: Update shell thread command to run following command as thread
...
'thread echo "Hello World"' runs the command 'echo "Hello World"' after
5 seconds have passed. This was just my test code for threading
2023-02-02 23:26:19 +02:00
Bananymous
5b5e620d8a
Kernel: Improve multithreading support
...
We can now use arbitary BAN::function<void(...)> as the Thread.
I also implemented multithreading for i386 since it was not done
on the initial multithreading commit.
2023-02-02 23:24:12 +02:00
Bananymous
777ede328e
Kernel: Add helper functions for reading current rsp and rbp
2023-02-02 23:19:44 +02:00
Bananymous
c85b97abee
Kernel: fix some of i368 IDT. This was really broken
2023-02-02 15:52:06 +02:00
Bananymous
117d1de038
Kernel: panic does not need to include <kernel/kprint.h>
...
This allows us to not have kprint available literally everywhere
2023-02-02 15:51:15 +02:00
Bananymous
6cbad718fb
Kernel: Add some more cxxabi functionality
...
We can now declate static variables in functions
2023-02-02 15:50:26 +02:00
Bananymous
f6b05212e0
Kernel: Add is_locked() to spinlock
...
I think this is atomic read
2023-02-02 15:49:30 +02:00
Bananymous
01f267a321
Kernel: fix spinlock for i386
2023-02-02 15:49:00 +02:00
Bananymous
9b8de5025a
All: rename every function from UpperCamelCase to snake_case
...
This was a mess since I didn't know which to use but now I decided
to go with snake_case :)
2023-02-01 21:05:44 +02:00
Bananymous
6a9d60a8fb
Kernel: Implement somewhat functioning multithread support
...
This still uses only a single cpu, but we can now have 'parallelization'
This seems to work fine in qemu and bochs, but my own computer did not
like this when I last tried.
I have absolutely no idea how multithreading should actually be
implmemented and I just thought and implemented the most simple one I
could think of. This might not be in any way correct :D
2023-02-01 01:53:35 +02:00
Bananymous
7d8aafa0b5
Kernel: Add macros for current archutecture
2023-02-01 01:52:52 +02:00
Bananymous
337569b0ca
Kernel: Implement basic SpinLock
2023-02-01 01:52:52 +02:00
Bananymous
be502ae616
Kernel: Debug stacktrace now detects if it kernel panics itself
2023-01-31 18:43:09 +02:00
Bananymous
cb3b62d665
Kernel: Only allocate single GDT entry during boot.S
...
When we need more, we should probably initialize rest of them
in cpp code
2023-01-31 18:43:09 +02:00
Bananymous
1954f223ad
Kernel: Add no sse and sse2 for kernel code
2023-01-31 18:43:09 +02:00
Bananymous
1687028ed5
Kernel: Add constructor and destructor to MMU
2023-01-30 18:54:04 +02:00
Bananymous
6dc22b7251
Kernel: Add actual register values to x86_64 kernel panic
...
Very hackish implementation, but we now get actual registers at the
time of the interrupt happening
2023-01-30 18:52:38 +02:00
Bananymous
bfe3426f6d
Kernel: Add processor dump flag to APIC
2023-01-26 13:13:46 +02:00
Bananymous
6418d7cfc3
Kernel: Add Other GDT entries to x86_64
2023-01-26 12:53:04 +02:00
Bananymous
f0093ed2fd
Kernel: kmalloc_eternal now updates the used/free values
...
I also improved the kmalloc_dump_info() formatting. We format the
values as 8-digit hex numbers since (atleast for now) the kmalloc
will always be under 4 GiB address and size :)
2023-01-26 03:04:19 +02:00
Bananymous
e00d18029d
Kernel: rewrite some of APIC since it didn't work with xsdts for some reason
2023-01-26 02:57:14 +02:00
Bananymous
35d2e27292
Kernel: Improve MMU
...
We don't have to invalidate page in AllocatePage() if we don't make
any changes. We also should not assert on deallocating non-present
pages, just return early :)
2023-01-26 02:57:14 +02:00
Bananymous
589f338357
Kernel: Cleanup IDT register dump inline assembly
2023-01-26 02:57:14 +02:00
Bananymous
05b48fa71c
Kernel: add gcc option to make sure we have (r/e)bp saved on stack
2023-01-26 02:57:14 +02:00