Bananymous
1cf7ef3de6
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
5248a3fe48
LibC: Fix bug in *printf
2023-05-09 20:30:12 +03:00
Bananymous
812e61ca70
Kernel: Add barebones GeneralAllocator for >4096B
2023-05-08 22:10:49 +03:00
Bananymous
2d0a5a9e15
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
f32d594879
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
c2ad76fe4f
BAN: Error uses 64 bit error codes
2023-05-07 02:09:52 +03:00
Bananymous
10d9b72da1
LibC: syscall() now returns -1 on error and updates errno
2023-05-07 01:51:39 +03:00
Bananymous
2fe9af7165
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
0deda83d05
BuildSystem: linker -O2 doesn't do anything? hopefully
2023-05-06 19:58:08 +03:00
Bananymous
ff5bcd4416
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
b65cd1d09b
Kernel: Invalid physical addresses from heap are specified now by 0
2023-05-06 17:34:22 +03:00
Bananymous
bc35a561d3
Kernel: GDT tss selector is now 16 bit value
2023-05-06 17:34:22 +03:00
Bananymous
06bc807e34
Kernel: MMU can now provide info about virtual address space
2023-05-06 17:34:22 +03:00
Bananymous
6262e41de1
Kernel: ISRs now print pid and tid
2023-05-06 00:10:15 +03:00
Bananymous
0cb53efa01
Kernel: 64 bit MMU now properly identity maps kernel
2023-05-05 14:19:28 +03:00
Bananymous
4e859bedbc
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
f139fc2229
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
e48acbb03b
Kernel: Add set_tss_stack() to 32 bit
2023-04-28 14:44:23 +03:00
Bananymous
d1155c968e
Kernel: dprintln file name is now relative
...
This makes file names much shorter
2023-04-28 14:43:19 +03:00
Bananymous
88a2c60065
BAN: Add is_power_of_two to Math functions
2023-04-28 14:42:49 +03:00
Bananymous
5bfcf6783e
LibC: add proper stdlib.h header
...
Function declarations taken from the posix specifications
2023-04-27 15:14:03 +03:00
Bananymous
94f8a657f1
LibC: add link to posix stdio.h
2023-04-27 14:16:25 +03:00
Bananymous
7fac2a7526
Userspace: Simple stdio test
2023-04-25 14:50:26 +03:00
Bananymous
46dcf98fc1
Kernel: Scheduler updates tss stack on thread execution
2023-04-25 14:49:50 +03:00
Bananymous
58ce907327
Kernel: Usespace threads now have an interrupt stack
2023-04-25 14:49:18 +03:00
Bananymous
6ecc8cac0e
Kernel: TSS stack can be set after initialization
2023-04-25 14:48:12 +03:00
Bananymous
bd95f17426
Kernel: Stack pointer out of bounds now panics with a message
2023-04-25 13:40:55 +03:00
Bananymous
0718bea5a1
LibC: Fix some bugs
2023-04-25 13:27:01 +03:00
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
