kmi - ACTIVE - Kernel with migrating threads as IPC

Age	Commit message (Collapse)	Author
2022-10-21	initial implementation of swap	Kimplul
	+ Slightly unsure if it should be a syscall, or if assign would be enough. Also, which thread should run in a fork/spawn? For now, old thread, though this might increase latency. Or add swap flag to these calls?
2022-10-21	initial spawn implementation	Kimplul

2022-10-21	slight optimisation to cur_tcb on riscv	Kimplul

2022-09-15	change syscalls to take 5 params and return 6	Kimplul
	+ In total, a syscall is built up of 6 values, with the first being the syscall number. Symmetrically, the first value is now a status and the following five values return "values". This allows us to cram in more info into the ipc_* functions. The performance difference is absolutely minimal, at least from my testing in qemu.
2022-09-15	add SYS_TICKS	Kimplul

2022-09-14	add putch syscall for easier userspace debugging	Kimplul
	+ Note that it is NOT intended for end user usage, just for debugging.
2022-09-14	add canary to kernel stack	Kimplul

2022-09-14	riscv32 boots and advances as far as riscv64	Kimplul

2022-09-11	change external directory structure	Kimplul
	+ Prepare for possibly testing rv32 + Also remove newline from debugging output
2022-09-11	allow building with riscv64-linux-gnu	Kimplul
	+ May warn about PHDR not being in LOAD, there is a flag to silence it (--no-warn-rwx-segment) but it doesn't seem to exist in riscv64-unknown-elf for some reason.
2022-09-02	reserve more space for fw	Kimplul
	+ Doesn't seem to be specified anywhere, but I'll stick with 2MB for now, working on the assumption that the FW is at the start of the physical RAM. Possible TODOs: generate apos.its automatically from init.elf, allocate root_branch statically?
2022-09-02	fix documentation warnings	Kimplul

2022-06-12	add license texts	Kimplul

2022-06-11	continue documentation	Kimplul

2022-06-11	fix ubsan warning in release mode	Kimplul

2022-06-11	continue documentation	Kimplul

2022-06-09	use doxygen todo	Kimplul

2022-06-09	continue documentation	Kimplul

2022-05-29	continue documentation efforts	Kimplul

2022-05-29	modify formatting rules	Kimplul

2022-05-29	continue documentation efforts.	Kimplul

2022-05-28	continue documenting source	Kimplul

2022-05-28	implement set_ipc on riscv	Kimplul

2022-05-28	start implementing new proc/rpc handling	Kimplul
	+ Essentially, separate root process and remote procedure call handling. I really should write down some documentation so I don't forget, but essentially: All threads share a common process virtual memory, and when a thread wants to make an rpc, it switches over to its own rpc vmem space that is linked to the remote process.
2022-05-24	make process loading more generic	Kimplul

2022-05-24	initial musings about exec	Kimplul

2022-05-23	start writing documentation	Kimplul

2022-05-23	modify file gen	Kimplul

2022-05-23	new include structure, make parse easier for doxy	Kimplul

2022-05-23	switch from clang-format to uncrustify	Kimplul
	The output is close enough, and I like that uncrustify is a third-party tool, so people can install a single tool for formatting instead of having to lug around a whole toolchain. I fully expect to have to add settings to uncrustify.conf, but let's see how this goes.
2022-05-22	fixed accidental removal of CLEANUP_CMD	Kimplul

2022-05-22	add @file info to all files	Kimplul
	+ Next step, start documenting contents of each file.
2022-05-22	rename vm_branch to vmem	Kimplul
	+ Closer to what it's for rather than what it is.
2022-05-22	improved tcb handling in preparation for processes	Kimplul

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

2022-05-09	improve uapi	Kimplul

2022-05-05	fix makefiles on netbsd	Kimplul
	+ Doesn't quite compile all the way unfortunately, building the GNU toolchain on NetBSD is a bit more difficult than I was expecting. LLVM does compile, but fails to link for some reason.
2022-05-05	riscv64 boots with clang (sort of)	Kimplul

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

2022-04-24	fix rv32 compile errors	Kimplul

2022-04-24	start initial irq handling	Kimplul
	+ Still lots todo, and I'm not entirely sure how I should handle program space switches (mainly since the kernel uses the process' stack, maybe it shouldn't?)
2022-04-23	ran clang-format	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	use uint64_t for timer ticks	Kimplul
	+ GCC seems to provide this even on 32bit platforms, though I should really check.
2022-04-21	start working on timer subsys	Kimplul

2022-04-17	expand sbi implementation a bit	Kimplul

2022-04-10	add basic ubsan and fix issues reported by it	Kimplul

2022-04-10	add clang format and run it	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)