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syscall #17

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xamidev merged 17 commits from syscall into main 2026-04-02 19:16:35 +02:00
Conversation 0 Commits 17 Files Changed 44
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xamidev commented 2026-04-02 19:15:54 +02:00
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A lot of things happened since last time.

Various improvements/new small features: Undefined Behavior sanitization (UBSan), Floating Point Unit (FPU), CPU vendor string recon, VMM upgrade, a bit of refactoring (in the gdt mainly).
The main thing here is that we set up a TSS, kernel interrupt stack, and the first ever user program!!! We have a little dumb implementation of sys_write.

Next steps will be to implement some kind of sys_exit, make the scheduler only work with user programs, quit the kernel apps shit and upgrade the kernel shell to a user shell using syscalls. We might even look further: making some sort of library that wraps around these syscalls. Then maybe we can make our x86-pepperos-gcc??? so we don't have to specify libraries, linking etc. each time... we'll see. Also a filesystem (at least TAR-like, initrd) would be nice to load more programs instead of relying on the Limine module loading.

A lot of things happened since last time. Various improvements/new small features: Undefined Behavior sanitization (UBSan), Floating Point Unit (FPU), CPU vendor string recon, VMM upgrade, a bit of refactoring (in the gdt mainly). The main thing here is that we set up a TSS, kernel interrupt stack, and the first ever user program!!! We have a little dumb implementation of sys_write. Next steps will be to implement some kind of sys_exit, make the scheduler only work with user programs, quit the kernel apps shit and upgrade the kernel shell to a user shell using syscalls. We might even look further: making some sort of library that wraps around these syscalls. Then maybe we can make our x86-pepperos-gcc??? so we don't have to specify libraries, linking etc. each time... we'll see. Also a filesystem (at least TAR-like, initrd) would be nice to load more programs instead of relying on the Limine module loading.
xamidev added 17 commits 2026-04-02 19:15:54 +02:00
Add kprintf for DEBUG(); differentiated from printf() db36899152
Kernel debug shell 3ae56bbad5
Upgrade VMM for processes ac788c55d3
CPU Name identification 532953da4d
Date functions (get current time) 0fbaf6d26e
Stack Smashing Protection 89259ec9b2
Undefined Behavior Sanitization 3cd38f654c
more UBsan 65371077d9
UBSan conditional compilation 2f1eef9e15
kheap info 1fc5225fd2
Enable FPU e8a0a36889
End the _t nonsense e9b57f70b1
Refactor GDT entry filling 8be2a744b4
TSS setup d644126901
Load limine module + alloc user stack 11a9dd4adb
user program (still many #PF) aa30d9c6b5
userland HELLO WORLD dbffb7f5fa
xamidev merged commit 1fe5eb2d38 into main 2026-04-02 19:16:35 +02:00
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Reference: pepper-org/pepperOS#17
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