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605 Commits

Author SHA1 Message Date
Bananymous 175f07cd2f 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 7b19d6e479 LibC: fread() now does a single syscall 2023-04-25 12:38:08 +03:00
Bananymous 77c83e5552 Kernel: Fix possible dead lock in Process::read() 2023-04-23 14:46:18 +03:00
Bananymous b15deb420f LibC: Write mostly functioning stdio 2023-04-23 14:32:37 +03:00
Bananymous b38989d594 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 79e6de325f 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 163d2e4ba8 LibELF: Add 32 bit support 2023-04-22 19:00:18 +03:00
Bananymous 4f8f3ddc29 Kernel: Fix 32 bit MMU 2023-04-22 18:22:39 +03:00
Bananymous 82a1a29260 Kernel: More proper paging in Elf loading 2023-04-22 18:17:44 +03:00
Bananymous 8a5608df91 Kernel: d{print,warn,error}ln(...) now has a spinlock 2023-04-22 17:58:51 +03:00
Bananymous 3f1c0ec91b Kernel: Process now frees up its pages on destruction 2023-04-22 16:54:46 +03:00
Bananymous 1406a75a92 Kernel: Cleanup process creation for userspace 2023-04-22 16:51:50 +03:00
Bananymous 8001493df3 Kernel: Fix some deadlocks in the Process 2023-04-22 16:19:57 +03:00
Bananymous 8c1f5bfe1e Kernel: Remove obsolete userspace stuff from kernel 2023-04-22 15:38:45 +03:00
Bananymous ec8b9640e2 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 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