camellia - Unnamed repository; edit this file 'description' to name the repository.

Age	Commit message (Collapse)	Author
2021-07-23	update the process' EIP/ESP when it syscalls	dzwdz

2021-07-22	don't map the VGA console buffer in user processes	dzwdz

2021-07-22	disable paging when handling interrupts	dzwdz
	The kernel code assumes that paging is always disabled. I've also added a bit of comments to the assembly / ruined the git blame.
2021-07-22	implement the debuglog() syscall	dzwdz

2021-07-21	syscall parameter & return value passing	dzwdz
	Sadly, sysenter on i386 limits me to only 4 arguments (so, 1 for the syscall id + 3 real args). If that turns out to be an issue I'll either just switch to interrupts, or switch to x64.
2021-07-21	barebones syscall	dzwdz

2021-07-21	fix init stack alignment	dzwdz

2021-07-21	fix sysenter()'s stack argument	dzwdz
	It was taken from the wrong place - also I don't think that functions should change their EIP in the first place?
2021-07-21	simplify the IDT generation	dzwdz

2021-07-21	create ISR stubs, which call a single main isr handler	dzwdz
	quick explaination of how this even works: The `call` in each stub pushes its own address onto the stack before calling stage2. We can substract the address of the 0th ISR to get the offset, which we then divide by the size of each stub to get the index.
2021-07-20	remove an already finished TODO	dzwdz

2021-07-20	per-process virtual memory	dzwdz
	VGA is only mapped into the virtual memory because there are no other ways of interacting with the OS.
2021-07-20	rename pagedir_use() to pagedir_switch()	dzwdz
	imo "use" was slightly misleading
2021-07-20	only enable paging when jumping into ring 0	dzwdz
	The kernel can't use the limited paging tables of user processes. Alternatively, sysenter could accept a parameter with a new cr3. That would allow/require using paging in the kernel - so I'll switch to it later, but I want to get other stuff done first.
2021-07-20	global PAGE_MASK define	dzwdz
	it's pretty useful, so it makes sense to define it alongside PAGE_SIZE
2021-07-19	fix some style inconsistenties	dzwdz

2021-07-19	remove the unused r3_test function	dzwdz

2021-07-19	very basic paging	dzwdz

2021-07-19	add a page fault handler	dzwdz

2021-07-18	basic executable loading	dzwdz

2021-07-18	clean up the linker script, remove duplicate labels	dzwdz

2021-07-18	fix most current compiler warnings	dzwdz
	stack_top got changed into a char, because `extern void` isn't even valid. others are self-explanatory
2021-07-18	move the kernel linker script to src/kernel/	dzwdz

2021-07-18	move all kernel sources to src/kernel/	dzwdz

2021-07-17	detect the highest used memory address, and only allocate pages above it	dzwdz

2021-07-17	basic boot module support	dzwdz
	This loads a file from the boot disk into memory. Currently it just gets printed, but it's going to become a real executable soon.
2021-07-17	rename _kernel_end to _bss_end	dzwdz

2021-07-10	abstract away logging	dzwdz
	Now, the kernel only interfaces with the architecture dependent stuff via functions declared in generic.h. I'll write a linter enforcing this soon.
2021-07-10	a sensible source structure	dzwdz
	The idea is that src/kernel/ is only allowed to interface with the hardware using whatever's defined in src/arch/generic.h. I'll probably write a small script for checking this later on. This is a giant commit so I've probably fucked something up. It boots fine on Bochs and QEMU, so at least there's that.
2021-07-10	separate the source code from object files; more modular Makefile	dzwdz