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583 Commits 1 Branch 0 Tags 3.9 MiB
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583 Commits

Author SHA1 Message Date
Bananymous be14a6c239 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 3aa0eeb4a3 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 b3eeb6412f Kernel: Add some bareboness functionality to map virtual addresses 2023-04-19 23:51:36 +03:00
Bananymous d38470c8e2 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 a159c980ee Kernel: kmalloc will always print debug on failed alloc 2023-04-19 18:05:01 +03:00
Bananymous a993d997ad LibELF: remove unused file 2023-04-19 17:32:12 +03:00
Bananymous 4475e3e184 Kernel: ATAController will fail to initialize in native mode 2023-04-19 17:29:36 +03:00
Bananymous cf0320e47d Kernel: PCI devices now report their prog_if 2023-04-19 16:43:05 +03:00
Bananymous cd03a95128 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 51e299c7e3 Kernel: Shell now has exit() command 2023-04-19 12:53:09 +03:00
Bananymous 6f65453fd4 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 67e0c21e0f
Update README.md 
Add cool badges :D
 2023-04-19 00:46:42 +03:00
Bananymous 702016a6e3 LibC: exit() calls _fini() 2023-04-19 00:42:00 +03:00
Bananymous d74ce4950c Kernel: We now launch Shell again on boot 
Adding this just before push :D
 2023-04-19 00:41:24 +03:00
Bananymous 59a682c720 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 7bd4593748 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 c5b006bf19 BAN: Add {TRY,MUST}_REF for references 
It is annoying that we have to have separate macros for these but
I can't find a way to cleanly return lvalue reference from statement
expression. Currently we cast the reference to pointer and return
unreference the pointer outside of the expression.

This feature will probably not be used any time soon, but atleas
it is implemented if I need it one day
 2023-04-19 00:31:15 +03:00
Bananymous 115c44630d BAN: TRY and MUST macros use rvalue references 2023-04-19 00:11:15 +03:00
Bananymous 1dc81abca4 BAN: Add specialization for ErrorOr<LValueReference> 
ErrorOr can now return a reference :)
 2023-04-18 22:02:47 +03:00
Bananymous 5aaf2128a8 BAN: Variant with reference now supports copy/assign 2023-04-18 20:21:23 +03:00
Bananymous 6aeac17072 BAN: Variant now works with references 
References can be assigned with the set() method. Construction nor
assigment operators cannot be used with references to avoid ambiguity
with what assignment to reference does.

You can set the underlying reference with the set() method and access
it with the get() method.

The references are stored as pointers to the object under the hood
which means that size of a reference is sizeof pointer.
 2023-04-18 19:53:34 +03:00
Bananymous 6d425182a2 BAN: Variant::set now copy/move assigns when possible 2023-04-18 19:10:22 +03:00
Bananymous 04ac23b67c BAN: Variant now has variadic template types 2023-04-18 18:29:48 +03:00
Bananymous 5494e2c125 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 aba82564f5 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 93abee9c7c 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 4034bef42e Scripts: remove disk build from install-usb.sh 
You can still use the install-usb.sh script from the build directory.
 2023-04-18 10:18:15 +03:00
Bananymous 821d065eba Kernel: Handle some Heap edge cases 2023-04-18 10:18:15 +03:00
Bananymous 2614437ba0 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 1aac3a0425 Kernel: Heap implementation can now give free pages from all of RAM 2023-04-18 10:18:15 +03:00
Bananymous a4568f9263 Kernel: Remove unused file 2023-04-18 10:18:15 +03:00
Bananymous a180e72b6f Kernel: Start working on heap 2023-04-18 10:18:15 +03:00
Bananymous 2de64b592d 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 9c0f3dd996 Kernel: Move kmalloc and MMU to Memory directory 2023-04-18 10:18:15 +03:00
Bananymous 079df39ca8 LibELF: Start implementing elf library 2023-04-18 10:18:15 +03:00
Bananymous 60a99d1d23
Create LICENCE 2023-04-13 00:38:24 +03:00
Bananymous fe87c08a02 LibC: add needed stubs to build executables with our compiler 2023-04-12 17:53:02 +03:00
Bananymous 8637959289 Kernel: We can create basic userspace processes 
These are still allocated on the kernel memory
 2023-04-12 17:52:36 +03:00
Bananymous 6be53668b9 Kernel: Scheduler can now terminate processes threads 2023-04-12 17:49:04 +03:00
Bananymous d1b7249803 Kernel: Debug::dump_stack_trace now 'detects' repeating function 2023-04-12 01:32:41 +03:00
Bananymous ff7c50c627 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 12779cdef8 Kernel: Threads now use only 4 KiB stack :) 2023-04-12 00:22:08 +03:00
Bananymous f5e676b2b7 Kernel: Fix TTY spinlock usage 2023-04-12 00:20:04 +03:00
Bananymous 8e5e5f819f 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 370a958379 BuildSystem: GCC will now complain on functions with 1 KiB stack 2023-04-12 00:18:06 +03:00
Bananymous 0ee7da92a3 BAN: Variant now aligns its data properly 2023-04-12 00:17:45 +03:00
Bananymous a0bd3dc54f 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 809eb2fe3e Kernel: Mark Scheduler::start() as noreturn as appropriate 2023-04-11 23:33:20 +03:00
Bananymous 7010d8614f 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 69f13f1896 Kernel: Scheduler will panic if it encounters stack overflow 2023-04-11 23:29:21 +03:00