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364 Commits

Author SHA1 Message Date
Bananymous dcce18799f Kernel: We now launch Shell again on boot 
Adding this just before push :D
 2023-04-19 00:41:24 +03:00
Bananymous a9a15ea2c0 Kernel: init2 is now launched as a process instead of thread 
Also only process can now add threads to scheduler. Nobody should
have raw access to scheduler and everything should be through
Process::current() or irqs (reschedules)
 2023-04-19 00:39:06 +03:00
Bananymous d63716db96 Kernel: Process is not reference counted any more 
This was not necessary and it made things needlessly complicated
 2023-04-19 00:34:18 +03:00
Bananymous 96ac072166 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 295a27f16a Kernel: Panic wont print stacktrace if it has already paniced 
This prevents stack trace dump to panic and loop
 2023-04-18 10:18:15 +03:00
Bananymous 88f60b5e41 Kernel: Map all ACPI tables on initialization 
This makes their usage much easier and less error prone

They won't mapped be processes when we get to there, so this won't be
a problem
 2023-04-18 10:18:15 +03:00
Bananymous d23604b0d5 Kernel: Handle some Heap edge cases 2023-04-18 10:18:15 +03:00
Bananymous c5347e6707 Kernel: Reorder boot initialization 
We now create the TTY as soon as possible so we can show console
output without serial port.
 2023-04-18 10:18:15 +03:00
Bananymous bf0c7b9ae8 Kernel: Heap implementation can now give free pages from all of RAM 2023-04-18 10:18:15 +03:00
Bananymous 0374b68fa1 Kernel: Remove unused file 2023-04-18 10:18:15 +03:00
Bananymous 633929629c Kernel: Start working on heap 2023-04-18 10:18:15 +03:00
Bananymous 6a3b3213cf 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 fdb4eb6042 Kernel: Move kmalloc and MMU to Memory directory 2023-04-18 10:18:15 +03:00
Bananymous 998ae511a3 LibELF: Start implementing elf library 2023-04-18 10:18:15 +03:00
Bananymous 3f9d6f0311 LibC: add needed stubs to build executables with our compiler 2023-04-12 17:53:02 +03:00
Bananymous 8ee63f8264 Kernel: We can create basic userspace processes 
These are still allocated on the kernel memory
 2023-04-12 17:52:36 +03:00
Bananymous 34358b8471 Kernel: Scheduler can now terminate processes threads 2023-04-12 17:49:04 +03:00
Bananymous 5b1af4ec47 Kernel: Debug::dump_stack_trace now 'detects' repeating function 2023-04-12 01:32:41 +03:00
Bananymous 071d7af58a Kernel: kmalloc does not check for corruptiong unless it cannot allocate 
We 'don't care' if kmalloc is corrupted unless it prevents us from
allocating memory. Scheduler should be catching stack overflows either
way and is much more efficient
 2023-04-12 00:24:02 +03:00
Bananymous 3201c3654e Kernel: Threads now use only 4 KiB stack :) 2023-04-12 00:22:08 +03:00
Bananymous 6ed3023725 Kernel: Fix TTY spinlock usage 2023-04-12 00:20:04 +03:00
Bananymous 892a63aec5 Kernel: Shell TTY_PRINT is now function instead of macro 
This makes functions uses way less stack
 2023-04-12 00:18:58 +03:00
Bananymous 3fe889d4a4 BuildSystem: GCC will now complain on functions with 1 KiB stack 2023-04-12 00:18:06 +03:00
Bananymous cafd546ce8 Kernel: kmalloc now detects corruption 
Kmalloc checks if its nodes have corrupted. This was happening
because of stack overflow.
 2023-04-11 23:36:46 +03:00
Bananymous 5810a77cbf Kernel: Mark Scheduler::start() as noreturn as appropriate 2023-04-11 23:33:20 +03:00
Bananymous 6f7045ead2 Kernel: kernel doesn't allocate large blocks of data on stack 
We used to allocate 1 KiB blocks on multiple places on stack. This
is a problem, since kernel stack shouldn't have to be too big
 2023-04-11 23:31:58 +03:00
Bananymous 40f9a42c00 Kernel: Scheduler will panic if it encounters stack overflow 2023-04-11 23:29:21 +03:00
Bananymous 9abe1f27bb Kernel: Process now locks the mutex while modifying open files 
This allows processes to be actually removed from the list instead
of dead locking
 2023-04-11 23:28:16 +03:00
Bananymous aa2aee684b Kernel: remove message from BAN::Error 
We don't store the error message anymore in BAN::Error.
Instead we store a error code that can be mapped into a string.
This allows BAN::Error to only take 4 bytes instead of 128.

We should also make some kernel initialization just panic instead
of returning errors since they are required for succesfull boot
anyway.
 2023-04-11 23:25:21 +03:00
Bananymous cfa025acae BAN: Move RefPtr to its own file and create New.h 
New.h contains definitions for placement new operators and
BAN::allocator and BAN::dealloctor
 2023-04-10 21:07:25 +03:00
Bananymous 781cc78a1f BuildSystem: Fix header copying to sysroot 
We used to copy all headers everytime to sysroot which caused
rebuild of the whole os. Now we use the cmake command
'copy_directory_if_different' which seemed to fix this issue :)
 2023-04-10 21:07:25 +03:00
Bananymous f924ac9265 Kernel: Threads can now be terminated mid execution 2023-04-10 21:07:25 +03:00
Bananymous df6e8a6562 Kernel: Add small wait in ATA driver before reading/writing 
This allows bochs to boot again
 2023-04-10 21:07:25 +03:00
Bananymous 3f01f936a1 Kernel: Fix framepointers on started threads 2023-04-10 21:07:25 +03:00
Bananymous 25ddc24754 BuildSystem: cmake can now build out libc 
I can't seem to get libc++ build to work...
 2023-04-10 21:07:25 +03:00
Bananymous 3fbee2c835 BuildSystem: remove now obsolete include directories from kernel build 2023-04-07 02:25:47 +03:00
Bananymous 2a8dc58b6a BuildSystem: Cleanup cmake code 
The buildsystem is kind of a mess. I will be writingn build
instructions soon.
 2023-04-06 20:31:10 +03:00
Bananymous 8a8793fd2d BuildSystem: you can now build the toolchain with cmake 2023-04-06 00:23:02 +03:00
Bananymous 9e0b4132ee Kernel: Shell now somewhat functions again 
I will not be fixing the shell implementation until I get to
userspace
 2023-04-05 11:37:41 +03:00
Bananymous 68158324f4 Kernel: Fix TTY echo and canonical flag behaviour 2023-04-05 11:35:19 +03:00
Bananymous a420be6b20 Kernel: Fix ansi control sequence cursor movement 2023-04-05 03:07:52 +03:00
Bananymous f281543255 Kernel: Add tty to process and make termios modifiable 2023-04-05 02:53:28 +03:00
Bananymous dcf0969e2d Kernel: TTY now supports clearing 2023-04-05 02:04:18 +03:00
Bananymous 4f522d337a Kernel: Add partial support for shell 
We don't handle arrow keys, and the tty does not know how to clear
the screeen :D
 2023-04-05 01:30:58 +03:00
Bananymous af0979ec32 Kernel: Process can now initialize stdio 
This allows the use of the fds STD{IN,OUT,ERR}_FILENO
 2023-04-05 01:10:25 +03:00
Bananymous 7f95444bb5 Kernel: Start work on making tty a file 
TTY is now a file that you can read from/write to. I still have
to port shell to use this new interface
 2023-04-05 00:56:09 +03:00
Bananymous 783842bac2 Kernel: add virtual write function to inode 2023-04-03 20:29:07 +03:00
Bananymous e1534ad25b Kernel: Fix keys in PS2Keymap 2023-04-03 20:25:23 +03:00
Bananymous ee1f3623ce Kernel: Fix typo 2023-04-03 19:56:55 +03:00
Bananymous dffdb51713 BuildSystem: remove non-existent file from kernel CMakeLists.txt 2023-04-03 19:02:25 +03:00