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1226 Commits

Author SHA1 Message Date
Bananymous e0a447bfaf Kernel: Add _GL to ACPI root namespace 2024-08-15 02:28:22 +03:00
Bananymous 3f5ee6f414 Kernel: Rewrite the AML conversion API 
This doesn't currently make the interpreter any better, but it will make
further implementation easier to be spec (or hardware...) compliant
 2024-08-15 02:25:45 +03:00
Bananymous 44d5c8c4b4 Kernel: Implement AML To{Buffer,Integer,String}Op 2024-08-14 20:28:32 +03:00
Bananymous 17b7e9e772 Kernel: Allow all named objects to fail cleanly if name exists 2024-08-14 20:28:00 +03:00
Bananymous 957df08932 Kernel: root command line option can be specified as an UUID 
Format is the same as in linux
root=UUID=XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX

This makes it easier to boot when computer has multiple disks installed
 2024-08-14 13:23:27 +03:00
Bananymous bb40069773 Kernel: Add nice debug prints for device addition/removal 2024-08-14 13:23:27 +03:00
Bananymous 37d5b60f5c Kernel: Implement AML {Event,Reset,Signal,Wait}Op 2024-08-14 11:59:34 +03:00
Bananymous feadea0e91 Kernel: Fix AML unaligned integer reads and buffer shifts over 32 2024-08-13 23:44:17 +03:00
Bananymous f71a29b6c4 Kernel: Implement AliasOp for AML interpreter 2024-08-13 22:42:37 +03:00
Bananymous ec4cfdee23 Kernel: Fix and cleanup a lot of AML code 
Node now have APIs to convert them to buffer, integer and string. This
allows possibility to handle methods that need explicitly use one of the
overloads instead of integer.

This patch also adds handling of DebugOp. This is used quite heavily in
uACPIs test suite.
 2024-08-13 22:42:37 +03:00
Bananymous dd79db6383 Kernel: AML implement CreateFieldOp 2024-08-13 18:52:48 +03:00
Bananymous 723e458bd7 Kernel/Terminal: Update terminal color themes and fix TTY bright/dark 2024-08-12 21:15:55 +03:00
Bananymous 39be57424c Kernel: Fix SYS_SEEK with SEEK_END 
I was subtracting the offset from file end when I should have added it.
 2024-08-12 19:13:27 +03:00
Bananymous f37e1c2229 Kernel: Map .rodata as read only instead of read-write 2024-08-12 14:28:52 +03:00
Bananymous 4d1b32f770 Kernel: open does not need TTY_INIT to set the controlling terminal 2024-08-11 01:02:59 +03:00
Bananymous a5a097fa4a Kernel/LibC: Add initial pseudo terminal support 
This patch implements posix_openpt() and ptsname()

grantpt() and unlockpt() are left in LibC as stubs, as posix_openpt
currently does all of the needed work.
 2024-08-11 01:02:59 +03:00
Bananymous ad645f31d0 Kernel/LibC: Add setsid() 2024-08-11 00:58:12 +03:00
Bananymous bac3219a01 Kernel: Fix `Pipe::can_read_impl()` 
The logic was inversed, which made all select calls report incorrectly
for pipes. This made terminal emulator just freeze.
 2024-08-10 18:18:25 +03:00
Bananymous 09a527fb12 Kernel: Fix scheduler thread counter 
I was actually never incrementing the counter :D
 2024-08-10 18:18:25 +03:00
Bananymous ed325b4a45 Kernel: Fix typo in userspace address validation 2024-08-09 16:52:57 +03:00
Bananymous 1c67b5e812 Kernel: Fix wait syscall to report status of exited children 2024-08-09 16:52:35 +03:00
Bananymous b6c964c444 Kernel: Rewrite pipes 
Pipes have now a fixed size buffer and pipe clone and close is working
again.
 2024-08-09 16:50:19 +03:00
Bananymous 44f0ec601f Kernel: Expose /proc/meminfo and fix /proc/<pid>/meminfo 
Thread was unconditionally calling <stack>->size() without validating
that the stack actually exists
 2024-08-09 15:58:56 +03:00
Bananymous 2a659a9d03 BuildSystem: Fix enable sse definition 
__enable_sse was never actually defined for any targets. This also adds
__arch definition for libc (so `utsname` works).
 2024-08-09 15:52:42 +03:00
Bananymous 7e7c3a1bb3 Kernel: VirtualTTY now handles dark colors 
I have seemingly forgot to add these before
 2024-08-09 15:52:42 +03:00
Bananymous 7afdfb150f LibC: Rewrite sigprocmask in terms of pthread_sigmask 
Also don't fail SYS_SIGPROCMASK if how is invalid and set is NULL.
 2024-08-07 17:01:35 +03:00
Bananymous 0a7c316ffb Kernel: Fix race condition when blocking threads 
If thread was blocked, but had not reached block queue, you might
already get an unblock request which would fail on an assertion.

If blocked thread was load balanced to another processor and unblocked
simultaneously, there was a race condition.
 2024-08-05 20:14:13 +03:00
Bananymous e72424e01a Kernel: Implement ANSI CSI M and fix ANSI CSI L 
There are not maybe not correct, but work much better than the old ones
 2024-08-05 15:53:01 +03:00
Bananymous a578527012 Kernel/LibC: Implement ioctl(TIOCGWINSZ) 
This allows ncurses to get the window size!
 2024-08-01 22:56:26 +03:00
Bananymous af78a2d080 Kernel: Implement ANSI CSI L for TTY 
vim seems to be using this, so I decided its needed
 2024-08-01 22:08:46 +03:00
Bananymous 840000d02b Kernel: Make sure null signal is not send with kill() 2024-08-01 21:41:54 +03:00
Bananymous 9ea4c777ad Kernel: TTY now handles ESC key presses 
This allows exiting vim :D
 2024-08-01 21:41:11 +03:00
Bananymous a33b63d066 Kernel/LibC: Implement alarm() and setitimer() 
This makes vim able to start!
 2024-08-01 21:09:56 +03:00
Bananymous da3b30cd94 Kernel: Add macro to dump all syscalls and their return values 2024-08-01 18:21:49 +03:00
Bananymous 4599e1dec5 Kernel: Make schedler not crash when unblocking active thread 
This was happening when sending signals to processes that were currently
running.
 2024-08-01 18:21:49 +03:00
Bananymous 6de350ce9d Kernel/LibC: Cleanup, fix and implement a lot of signal code 
This patch implements sigsets and some of their usages
 2024-08-01 17:01:18 +03:00
Bananymous 838d31fa41 Kernel: Implement more POSIX compliant open() and openat() syscalls 2024-08-01 15:35:02 +03:00
Bananymous 7c3b6307d9 Kernel: Cleanup USB initialization code 2024-07-31 23:23:44 +03:00
Bananymous f0be4f86a6 LibC/Kernel: Implement access 2024-07-30 11:51:07 +03:00
Bananymous e5bb843059 LibC/Kernel: Implement ttyname 2024-07-30 11:41:18 +03:00
Bananymous 681d8327f5 LibC/Kernel: Cleanup termios code 
This is still not correct, but much better than it used to be
 2024-07-30 11:10:43 +03:00
Bananymous 9bc02c81f8 Kernel: Map DMA and PCI MMIO as uncached 2024-07-30 11:10:08 +03:00
Bananymous bb1738db8c Kernel: Make thread unblocking O(1) 
This is still bit broken. VirtualBox seems to freeze sometimes, but I
could not recreate this on qemu (with and without kvm) or real hardware.
 2024-07-24 00:31:01 +03:00
Bananymous 9548c592a3 Kernel: Always print basic info about xHCI controller 
Its nice to see that the controller is getting initalized
 2024-07-23 09:09:08 +03:00
Bananymous cda0276d39 Kernel: Force PCI irq line usage when not using APIC 
afaik PIC does not support MSI
 2024-07-23 09:08:00 +03:00
Bananymous 539afb329a Kernel: All processors use LAPIC timer when running with APIC 
This makes scheduler preemption much cleaner as bsb does not have to
send smp messages to notify other processes about timer interrupt.

Also PIT percision is now "full" 0.8 us instead of 1 ms that I was using
before.
 2024-07-23 02:28:52 +03:00
Bananymous 3e0150f847 Kernel: Pressing F1 now toggles rendering of CPU loads to the terminal 
This can be nice for seeing the performance and problems on the load
balancing algorithm.
 2024-07-22 00:43:13 +03:00
Bananymous f8261c60c0 Kernel: Rewrite the whole scheduler and re-architecture SMP handling 
Change Semaphore -> ThreadBlocker
  This was not a semaphore, I just named it one because I didn't know
  what semaphore was. I have meant to change this sooner, but it was in
  no way urgent :D

Implement SMP events. Processors can now be sent SMP events through
IPIs. SMP events can be sent either to a single processor or broadcasted
to every processor.

PageTable::{map_page,map_range,unmap_page,unmap_range}() now send SMP
event to invalidate TLB caches for the changed pages.

Scheduler no longer uses a global run queue. Each processor has its own
scheduler that keeps track of the load on the processor. Once every
second schedulers do load balancing. Schedulers have no access to other
processors' schedulers, they just see approximate loads. If scheduler
decides that it has too much load, it will send a thread to another
processor through a SMP event.

Schedulers are currently run using the timer interrupt on BSB. This
should be not the case, and each processor should use its LAPIC timer
for interrupts. There is no reason to broadcast SMP event to all
processors when BSB gets timer interrupt.

Old scheduler only achieved 20% idle load on qemu. That was probably a
very inefficient implementation. This new scheduler seems to average
around 1% idle load. This is much closer to what I would expect. On my
own laptop idle load seems to be only around 0.5% on each processor.
 2024-07-22 00:33:50 +03:00
Bananymous 9f90eeab05 Kernel: Fix stack pointer OOB check 
i686 does not push the stack pointer on interrupt when no CPL change
happens.
 2024-07-22 00:27:08 +03:00
Bananymous 1ee37cb671 Kernel: Make sure stack is aligned on interrupts for i686 target 
I just realized that only x86_64 aligns stack pointer when interrupt is
triggered.
 2024-07-22 00:10:42 +03:00