Bananymous
3e93dae53c
Kernel: Add invalidate() to MMU
2023-05-28 18:05:49 +03:00
Bananymous
187bb046aa
Kernel: fix MMU::map_page_at()
...
We used to only reassign if flags changed
2023-05-28 17:57:05 +03:00
Bananymous
b021d3eebd
Kernel: Processes and Threads use VirtualRange memory allocations
2023-05-28 17:48:34 +03:00
Bananymous
15842db83e
Kernel: Move PhysicalRange to its own file and add VirtualRange
2023-05-28 17:48:34 +03:00
Bananymous
869de7283f
Kernel: MMU::get() is now MMU::kernel
...
MMU is can now be locked with RecursiveSpinLock.
Scheduler now has get_current_tid() that works before the Scheduler
is initialized. This allows RecursiveSpinLock usage early on.
2023-05-28 16:18:18 +03:00
Bananymous
eb24d32383
Kernel: Directory listing is working again
2023-05-26 22:31:21 +03:00
Bananymous
565e3db22d
Kernel: kmalloc debug_dump is marked [[maybe_unused]]
2023-05-26 22:31:21 +03:00
Bananymous
faf14b880e
LibC: Rewrite all the headers.
...
We now have more or less posix issue 2018 conforming libc headers.
This was a really time consuming and boring operation but it had to
be done.
Now we get to actually start implementing libc :)
2023-05-26 22:31:21 +03:00
Bananymous
27147790fd
Userspace: Start work on shell
2023-05-26 22:31:21 +03:00
Bananymous
1658e925f2
Kernel: Add bareboness possibility to set termios
2023-05-26 22:31:21 +03:00
Bananymous
80d9f6131b
Kernel/LibC: move file offset back to kernel
...
This makes keeping track of offsets easier and more proper
2023-05-26 22:31:21 +03:00
Bananymous
e0a72defa2
Kernel: Add argc and argv to process entry
2023-05-16 00:27:49 +03:00
Bananymous
e0a7e242f8
Kernel: Add MMUScope
...
This disables interrupts and loads specified mmu for the
scope it lives in
2023-05-16 00:26:39 +03:00
Bananymous
6acb86c14b
Kernel: MMU keeps track of the current
2023-05-16 00:26:39 +03:00
Bananymous
ec316391c5
Kernel: argc is passed as zero to userspace
2023-05-11 18:28:32 +03:00
Bananymous
177b205c48
BuildSystem: userspace has cmake target
2023-05-11 16:19:53 +03:00
Bananymous
729ff267d7
LibC: add function declarations to sys/stat.h
2023-05-11 15:11:33 +03:00
Bananymous
ff2e2937a5
Kernel: Remove offset from OpenFileDescriptor
...
This is now handled on the libc side. There might be reasons to
have it in kernel side, but for simplicity's sake I'm moving it
to libc for now :)
2023-05-09 20:31:22 +03:00
Bananymous
512be884ed
Kernel: Add barebones GeneralAllocator for >4096B
2023-05-08 22:10:49 +03:00
Bananymous
f1667b398a
Kernel: FixedWidthAllocator operates on MMU
...
Instead of Process* we use MMU& in FixedWidthAllocator since it is
everything it actually needs :)
2023-05-08 00:06:56 +03:00
Bananymous
b0ec0f1a1a
Kernel: We add FixedWidthAllocators on demand
...
On SYS_ALLOC we will add a new FixedWidthAllocator if the old ones
are already full or we don't have one with proper size. This allows
arbitary number of allocations as long as you have enough memory
available :)
Next I will be writing a general allocator for allocations larger
than 4096 bytes which should make SYS_ALLOC syscall complete :)
2023-05-07 23:57:01 +03:00
Bananymous
12e42f40c5
Kernel/LibC: add free function for FixedWidthAllocator
...
I have to rework the syscall API and allocators in process. For
now this works well enough :)
2023-05-07 01:21:50 +03:00
Bananymous
890aa9aa15
BuildSystem: linker -O2 doesn't do anything? hopefully
2023-05-06 19:58:08 +03:00
Bananymous
bcfd838131
Kernel: Add basic fixed width allocator for userspace
...
We have to move process stacks to the general heap and maybe map
kernel to higher half.
2023-05-06 19:58:08 +03:00
Bananymous
9c07add00f
Kernel: Invalid physical addresses from heap are specified now by 0
2023-05-06 17:34:22 +03:00
Bananymous
ab8aac7dcf
Kernel: GDT tss selector is now 16 bit value
2023-05-06 17:34:22 +03:00
Bananymous
f36b94d039
Kernel: MMU can now provide info about virtual address space
2023-05-06 17:34:22 +03:00
Bananymous
92daa831d1
Kernel: ISRs now print pid and tid
2023-05-06 00:10:15 +03:00
Bananymous
e7a170c89f
Kernel: 64 bit MMU now properly identity maps kernel
2023-05-05 14:19:28 +03:00
Bananymous
3c5d3eb8ad
Kernel: TTY input process is now single instance
...
Process sends key events to the active (currently only) tty
2023-04-30 16:11:14 +03:00
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