kmi - ACTIVE - Kernel with migrating threads as IPC

Age	Commit message (Collapse)	Author
2022-05-21	add status info to memory mappings	Kimplul
	+ next up would probably be to start working on process/thread relationships, largely as documented. Still not entirely sure about how I want to handle fork, but I suppose I might figure it out at some point.
2022-05-21	implement timers better	Kimplul

2022-05-12	initial workings of shared memory	Kimplul
	+ Should document this better but essentially a server requests a shared buffer, and chan then share this buffer to a thread. Freeing the buffer is done through normal means. MR_SHARED is used for buffers that are shared, and MR_OWNED tells whoever is freeing that region that it is allowed to free the physical memory behind the shared buffer.
2022-05-05	riscv64 boots with clang (sort of)	Kimplul

2022-04-29	continue building base for irq handling	Kimplul

2022-04-21	fix warnings on 32bit riscv	Kimplul
	+ Will most probably not work on 32bit, but nice to make 'portable' code.
2022-04-21	start working on timer subsys	Kimplul

2022-03-03	faster deps.mk generation	Kimplul

2022-03-01	make vmflags_t 16 bits	Kimplul
	lower 8 bits are reserved for arch-specific flags (but at least read/write/execute) and higher 8 bits are metadata, currently only for VM_VIRTUAL (to be used when the backing physical memory shouldn't be freed)
2022-01-07	Modified pmem configuration handling	Kimplul

2022-01-07	Steps towards better status/debugging control	Kimplul

2022-01-06	Jump back to kernelspace tested	Kimplul
	+ Added automated categories to debugging, bug/info/warn/error etc. Now I should just try to use them here and there :D
2021-12-30	Add initial version of device memory mapping	Kimplul

2021-12-27	Started work on syscalls	Kimplul

2021-12-26	First useful jump to userspace!	Kimplul

2021-12-21	Started allowing higher order allocs	Kimplul

2021-12-20	Added init back	Kimplul

2021-12-19	Add cpio newc format reader	Kimplul
	+ Still need to actually add in an initrd that uses the format :D
2021-12-19	Massive changes to jump to userspace	Kimplul

2021-12-08	Added some C11 atomic operations	Kimplul
	Mainly to be used in spinlocks etc.
2021-10-25	Some minor changes to virtual memory handling	Kimplul
	+ Should start to think about how virtual memory should be handled efficiently, I'm sort of flailing around and not actually doing anything beneficial. The mapping system I've so far implemented _works_, but it's not good and I'm not happy with it. I might come back and fix/improve it, but I think I'll go ahead and do other things for a while, might give me a better overhead view of what the virtual memory system should do. + TODO: should probably document the memory layout I'm going with at the moment.
2021-10-11	Start designing vmem framework	Kimplul

2021-10-01	First jump to virtual memory!	Kimplul
	+ Lots of bughunting to do, probably lots of off-by-one and so on errors, and I make a lot of naive and possibly dangerous assumptions. But cool start nonetheless. Should also come up with some method of exchanging data between the init and actual kernel, probably some struct of some sort. TODO
2021-09-20	Some slight robustness improvements and obo errors	Kimplul

2021-09-19	Added basic awareness of kernel size/bounds	Kimplul

2021-09-19	Added fdt debug capability	Kimplul
	+ For future reference, apos now requires initrd to be found in fdt.
2021-08-22	Integrated libfdt	Kimplul
	+ Added new common/ directory, into which code that should be shared with init and kernel is to be added. Currently string.c and bytes.c. Code in common/ should be marked with __weak, so as to allow the arch to implement a better, more optimised version of the function if possible/required. + Created include/apos/types.h with macros essentially providing the libc limits.h and stdint.h. At the moment I use gcc/clang predefined macros for most things.
2021-08-19	New build system (WIP)	Kimplul