Kolibri64 kernel design

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  rgimad

  Posts 184

  Joined: Mon Apr 06, 2020 1:09 pm

  Sun Jan 21, 2024 5:04 pm

  Hi all. For a long time there was an idea that it would be good to start a 64-bit KolibriOS, that would be compatible with the current 32bit version (like modern MenuetOS is backward compatible with Menuet32 apps). And I want to try to start the development. I think that in Kolibri64 we should not repeat the mistakes and downsides of current KolibriOS such as:
  - threads are stored in a static array => no more than N threads
  - window system: static array of windows, one thread - one window (even if thread doesn't need window), buttons in kernel (really weird, why not comboboxes or editboxes:) )
  - no file descriptors => inefficient work with files
  - no standard i/o streams => cannot make normal console, command command pipes (like cmd1 | cmd2 | .... | cmdN)
  - no SMP support, computational inefficiency, cannot use more than one cpu core (and significant part of current code relies on this fact)
  - apps are loaded at 0x0 so NULL is correct address
  - overall weird kernel API design (syscalls like draw a dot, line, rect, read a dot, also I dont think that midi stuff and cd tray open/close in kernel is a good idea)
  
  In this thread I will post my thoughts and results, and we can discuss various aspects of the Kolibri64 kernel design
  
  So, as for the kernel, I think I should start with an example that would be able to boot into 64-bit mode and have a debug board with a custom font. Next, I think it is necessary to work on memory managers, interrupt handling and SMP.
  
  Also I found two OSes written in x86-64 assembly Cyjon (https://github.com/CorruptedByCPU/Cyjon) and BareMetal (https://github.com/ReturnInfinity/BareMetal), whose code would be useful to see

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bad_Dr3dd0x

Posts 375

Joined: Wed Mar 18, 2015 8:22 am

Tue Jan 30, 2024 12:09 am

What will be the architecture of the kernel? Monolith, modular or microkernel? Who will be involved in its development?

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If there were no God, he would have to be invented.
Voltaire

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program God
begin