695 Commits

Author	SHA1	Message	Date
apio	84c82a4e75	luna, kernel: More constness	2023-01-10 19:31:41 +01:00
apio	c83f6c03b5	Bitmap: Add a 'find_and_toggle' method ... Just like find(), but toggles the value when finding it. Avoids doing this manually in MemoryManager and KernelVM.	2023-01-09 18:08:50 +01:00
apio	4287ec6cb0	Bitmap: Introduce a new method 'find' and use it in MM and KernelVM ... This method looks for the first bit with a value, optionally from a starting index, and returns its index. This should be (haven't benchmarked) way faster than the manual way, AKA what MM and KernelVM were doing. This is due to this method using bit and byte manipulation tricks instead of just calling get() until getting the desired result :)	2023-01-09 17:59:52 +01:00
apio	b0e5d02c9a	kernel: Turn off console logging before starting the init process	2023-01-08 15:32:59 +01:00
apio	0c73d69a70	Kernel: Fix shadow 12GiB reserved entry when running QEMU without KVM on ... Fix inspired by: https://github.com/serenityos/serenity/pull/16345	2023-01-07 20:58:12 +01:00
apio	fde1727218	KernelVM: Expand the available VM range	2023-01-07 12:33:00 +01:00
apio	8ee634d19b	Kernel/Scheduler: Display addresses starting with 0x when creating threads	2023-01-07 12:02:14 +01:00
apio	7e377ef712	Implement printf()	2023-01-07 01:49:26 +01:00
apio	29bd8a69fa	MemoryManager: Add helper functions to validate arbitrary ranges of userspace memory	2023-01-07 01:39:33 +01:00
apio	a8a64863c8	kernel, libc: Add clock_gettime()	2023-01-07 00:21:08 +01:00
apio	6e9b4491a6	MemoryManager: Add copy_to_user() and copy_to_user_typed()	2023-01-07 00:17:16 +01:00
apio	e37280b0e5	ELFLoader: Set both the read-write and execute flags if the section has both ... Not good for W^X, but the compiler decides to squash everything into a single program header :(	2023-01-06 17:34:24 +01:00
apio	87a4bc91d8	arch/x86_64: Nicer display for page faults that shows a human-readable version of the error code	2023-01-06 17:31:22 +01:00
apio	293b979e75	ELFLoader: Do not crash on non-page-aligned sections	2023-01-06 13:30:17 +01:00
apio	fd8a0175d9	Add a syscall infrastructure (our baby program can print to the console now!)	2023-01-05 22:39:56 +01:00
apio	caa3fe8c45	MemoryManager: Add validate_userspace_string() ... A bit crude, should be replaced by a strdup_from_user() helper to avoid touching userspace memory directly. But it'll do for now.	2023-01-05 22:39:09 +01:00
apio	0ea9974512	First user process! ... Putting it all together, we have a user process that successfully calls sys_exit() w/o crashing.	2023-01-05 21:55:21 +01:00
apio	0aac6c888d	x86_64: Basic exit() syscall! ... User processes need to do something, amirite?	2023-01-05 21:53:48 +01:00
apio	a33a72915e	Scheduler: Creation, destruction and switching of userspace tasks :)) ... From a TarStream. Not optimal, but OK for the moment.	2023-01-05 21:52:26 +01:00
apio	ea89b92675	Store a bit more stuff in a thread :)	2023-01-05 21:50:53 +01:00
apio	31ea030c7f	MMU: Add functions to create and delete userspace page directories	2023-01-05 21:50:26 +01:00
apio	c53bba0392	MemoryManager: Add an unmap_weak_and_free_vm() helper function ... This function mirrors unmap_owned_and_free_vm(), but using weak unmapping (does not free the underlying physical memory)	2023-01-05 21:50:06 +01:00
apio	d3c414af4e	ELFLoader: Do not keep track of segments ... This reduces calls to kmalloc() since segment data is heap-allocated, and the segments loaded will be deleted when deleting the page directory.	2023-01-05 21:46:03 +01:00
apio	5854e5e530	Add newlines at end-of-file	2023-01-02 13:07:29 +01:00
apio	4081186b27	Heap: Rewrite kmalloc to use Option<HeapBlock*> instead of nullable pointers to iterate over the heap ... At some point, this should be done inside LinkedList itself, but we have no such thing as break in for_each(). It's iterate over everything or nothing. This also requires operator= in Option, might be also added to Result in the future.	2022-12-30 19:02:25 +01:00
apio	24773fbece	kernel/main: Remove reference to 'extern const BOOTBOOT bootboot'	2022-12-30 18:38:50 +01:00
apio	74aa30a44f	Init: Call efficient_halt() on magic number mismatch instead of busy-looping	2022-12-30 18:36:22 +01:00
apio	9569385691	Remove unused include	2022-12-30 18:32:44 +01:00
apio	7952d1d8a0	x86_64: Add basic keyboard support with an ASYNC DRIVER	2022-12-26 19:59:18 +01:00
apio	ed34009b50	Heap: Log more details of blocks	2022-12-26 16:17:24 +01:00
apio	1c70ab5a1a	Heap: Avoid combines with blocks outside a range	2022-12-26 15:20:56 +01:00
apio	a1eca479d5	x86_64: Add a getter for the initial page directory	2022-12-26 12:57:25 +01:00
apio	2600acc96c	Thread: Add init_regs_user()	2022-12-26 12:46:07 +01:00
apio	7e62ee66be	Change heap.first().has_value() to the cheaper heap.count()	2022-12-26 12:24:39 +01:00
apio	73c58bd902	Init: Move platform_init() before MemoryManager::init() ... This enables NX before we actually use it. Wasn't causing problems with KVM on, but crashed with KVM off with a 'reserved bit set' page fault.	2022-12-26 12:12:55 +01:00
apio	0054777e7d	x86_64: Warn if NX is not supported	2022-12-26 12:11:10 +01:00
apio	08984e1673	x86_64: Create a has_flag() helper function and remove redundant clearing of reserved bits	2022-12-26 12:10:47 +01:00
apio	59d69f684f	x86_64: Add general protection fault handler	2022-12-24 11:49:47 +01:00
apio	f2cc797599	Add a simple ELF loader	2022-12-23 13:09:21 +01:00
apio	ad0f6546d7	Add a global initrd TarStream to make the initial ramdisk accessible everywhere ... It's also mapped into virtual memory instead of directly going into the physical location!!	2022-12-23 11:33:23 +01:00
apio	6ff92b1714	MemoryManager: Add get_kernel_mapping_for_frames() ... This function allocates a continuous range of VM and maps the physical frames passed to said VM range.	2022-12-23 11:30:49 +01:00
apio	9afaad8fed	Add dbgln() for the luna library	2022-12-22 18:00:35 +01:00
apio	a3595e71a9	Update .clang-format	2022-12-21 20:22:44 +01:00
apio	fcefab4383	TextConsole: Add wide-character overloads for print() and println() ... These can't fail from UTF-8 decoding errors.	2022-12-21 19:41:13 +01:00
apio	293b7b0f11	TextConsole: Propagate UTF-8 decoding errors	2022-12-21 17:38:19 +01:00
apio	2e8ea724a0	arch/x86_64: Refactor the stack tracing code to remove duplicate code	2022-12-21 17:21:01 +01:00
apio	e2a6cba3c6	Log: Update formatting to make ANSI weirdness more sensible	2022-12-19 21:42:53 +01:00
apio	703c3f44fb	Add two FIXMEs	2022-12-19 21:41:27 +01:00
apio	042f999677	Heap: SCRUB IT ALL ... If your memory is all 0xacacacac there is a big probability you haven't initialized it.	2022-12-19 13:20:38 +01:00
apio	a11a5dec1f	DoublyLinkedList -> LinkedList	2022-12-19 12:43:23 +01:00