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397 Commits

Author SHA1 Message Date
Bananymous 55bb0084aa Kernel: namespace and function renames 
MMU moved to namespace kernel
Kernel::Memory::Heap moved to just Kernel
MMU::map_{page,range} renamed to identity_map_{page,range}

Add MMU::get_page_flags
 2023-04-28 14:48:38 +03:00
Bananymous acf5660090 Kernel: Add set_tss_stack() to 32 bit 2023-04-28 14:44:23 +03:00
Bananymous 9d7530662f Kernel: dprintln file name is now relative 
This makes file names much shorter
 2023-04-28 14:43:19 +03:00
Bananymous a22caa38d2 Kernel: Scheduler updates tss stack on thread execution 2023-04-25 14:49:50 +03:00
Bananymous dc0f8b383f Kernel: Usespace threads now have an interrupt stack 2023-04-25 14:49:18 +03:00
Bananymous f1a0625b61 Kernel: TSS stack can be set after initialization 2023-04-25 14:48:12 +03:00
Bananymous 02b961fd7e Kernel: Stack pointer out of bounds now panics with a message 2023-04-25 13:40:55 +03:00
Bananymous 6e01e04922 Kernel: Fix bug in Process::create_userspace() 
We used to write more than we needed to. This could lead to unwanted
page faults
 2023-04-25 13:21:28 +03:00
Bananymous b7c2ea8d46 Kernel: Fix possible dead lock in Process::read() 2023-04-23 14:46:18 +03:00
Bananymous cd74b2167d LibC: Write mostly functioning stdio 2023-04-23 14:32:37 +03:00
Bananymous 9b2a577fc3 Kernel: Add ASSERTion to Process::exit() 
This is just so I don't forget that exit can currently only
be called on the executing thread itself
 2023-04-22 19:05:27 +03:00
Bananymous 2dd09163e6 Kernel: Process can now load 32 bit elf files on i386 
We are page faulting on process exit but I'm investigating
the reason.
 2023-04-22 19:03:30 +03:00
Bananymous fb6add2b4a Kernel: Fix 32 bit MMU 2023-04-22 18:22:39 +03:00
Bananymous 48445f12ac Kernel: More proper paging in Elf loading 2023-04-22 18:17:44 +03:00
Bananymous 792fad2a03 Kernel: d{print,warn,error}ln(...) now has a spinlock 2023-04-22 17:58:51 +03:00
Bananymous cc04990ce3 Kernel: Process now frees up its pages on destruction 2023-04-22 16:54:46 +03:00
Bananymous 7530482cc2 Kernel: Cleanup process creation for userspace 2023-04-22 16:51:50 +03:00
Bananymous 33d8c518e9 Kernel: Fix some deadlocks in the Process 2023-04-22 16:19:57 +03:00
Bananymous e0ce2394fe Kernel: Remove obsolete userspace stuff from kernel 2023-04-22 15:38:45 +03:00
Bananymous fadce063a7 Kernel: Usespace programs are now ran through ELF files 
only 64 bit elf files are supported for now.
 2023-04-22 15:35:32 +03:00
Bananymous 26fe6ad898 Kernel: kmalloc does not dump stack trace 
dump_stack_trace() page faults and i dont feel like debugging this
now :)
 2023-04-21 13:45:13 +03:00
Bananymous fc71d2f7c4 Kernel: Don't call 'cli' on interrupt 
This is automatically done because we are using interrupt gates
in the IDT
 2023-04-21 11:18:08 +03:00
Bananymous 35e949ef5e Kernel: Fix syscall return value in 32 bit 2023-04-21 11:08:02 +03:00
Bananymous 9c506ef85b Kernel: Stack pointer is validated when updated 
This allows us not to fail stack pointer when in syscall since
interrupts use their own stack
 2023-04-21 10:40:24 +03:00
Bananymous b1c7af38d0 Kernel: Add barebones per process virtual addresses 
We now assign every (userspace) process its own MMU which we load
in scheduler. This allows every process to have separate virtual
address space.

This is very hackish implementations but it works for now
 2023-04-20 00:45:41 +03:00
Bananymous ea0c9b639f Kernel: Add some bareboness functionality to map virtual addresses 2023-04-19 23:51:36 +03:00
Bananymous 0030f035be Kernel: Rename MMU::{un,}allocate... to MMU::{un,}map 
This is more appropriate name for the behaviour :D
 2023-04-19 21:50:30 +03:00
Bananymous c26529ae86 Kernel: kmalloc will always print debug on failed alloc 2023-04-19 18:05:01 +03:00
Bananymous e8a0df54b1 Kernel: ATAController will fail to initialize in native mode 2023-04-19 17:29:36 +03:00
Bananymous 33393335c8 Kernel: PCI devices now report their prog_if 2023-04-19 16:43:05 +03:00
Bananymous c5b02bb9f5 Kernel: Shell fix file reading 
We were reading 8 bytes at a time instead of the 1024 we were
supposed to :DD
 2023-04-19 14:09:23 +03:00
Bananymous a1047918d2 Kernel: Shell now has exit() command 2023-04-19 12:53:09 +03:00
Bananymous fd81e31050 Kernel: Fix Process::exit() and where it is called from 
cksum doesn't seem to work anymore on big files. I have to look
into this. It locks up after couple of seconds...
 2023-04-19 12:52:21 +03:00
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