Bananymous/banan-os
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Author SHA1 Message Date
Bananymous
4ae1332a43 LibELF: Header printing can now be turned off 2023-04-22 15:34:09 +03:00
Bananymous
10c884bba4 LibELF: ELF now has methods for accessing more attributes 
You can now access the program headers and the memory itself
 2023-04-22 15:31:05 +03:00
Bananymous
c15f031c3f LibC: puts() now just calls syscall(SYS_WRITE, ...) 2023-04-22 15:29:38 +03:00
Bananymous
1b4c744974 LibC: syscalls have now proper argument order 2023-04-22 15:29:15 +03:00
Bananymous
d9068eebb5 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
3ad0d2328d 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
3f2beb4547 Kernel: Fix syscall return value in 32 bit 2023-04-21 11:08:02 +03:00
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