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Author	SHA1	Message	Date
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	f0e14cf7e9	Update year range in LICENSE :)	2023-01-02 13:08:42 +01:00
apio	5854e5e530	Add newlines at end-of-file	2023-01-02 13:07:29 +01:00
apio	aab3a0a840	Update settings.json	2023-01-02 13:07:13 +01:00
apio	3442970678	Add vscode configuration	2023-01-02 13:00:22 +01:00
apio	4ef764e62e	mprotect(): Validate the entire range to protect is in userspace memory ... Before this patch, sys_mprotect() only validated the starting address. This was as bad as it sounds, in fact it let me write a fun exploit using it. Now, this exploit is no longer possible. This patch is probably not relevant, since this branch will be gone in the future, as soon as restart gets merged into main. I made it anyways :^)	2023-01-02 11:51:08 +01:00
apio	df8f9c6cf6	SharedPtr: adopt_shared_from_owned	2022-12-31 12:02:15 +01:00
apio	831711ab7e	TypeTraits: Remove const, volatile, and reference	2022-12-31 11:50:30 +01:00
apio	e2e21923d7	Result: Implement operator=()	2022-12-30 19:06:47 +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	3a3968b268	Result: Add nonnull_or_error()	2022-12-30 18:46:27 +01:00
apio	973e39a255	LinkedList: Move nonnull_or_empty_option to Option.h so everyone can use it	2022-12-30 18:46:18 +01:00
apio	28f53f9ccf	LinkedList: Rename the nonnull_or_error() helper to a more accurate nonnull_or_empty_option()	2022-12-30 18:44:37 +01:00
apio	1f36ecd044	LinkedList: Make expect_first() and expect_last() show a more accurate error description on panic ... Instead of showing a generic "Option::value() called on an empty Option" with no useful source location, you will get something like "check failed: m_start_node at LinkedList.h:139"	2022-12-30 18:43:39 +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	400d0395a2	Result: Avoid double-checking when calling through to the underlying Option	2022-12-30 15:00:02 +01:00
apio	8e59a0a79f	CMakeLists improvements	2022-12-30 11:48:18 +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	2af3997456	LinkedList: Fixed some boogs, LinkedList is now boog-free :)	2022-12-26 15:54:29 +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	7efb79dd26	LinkedList: Check for nullptrs in detach_from_list()	2022-12-26 12:45:49 +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	f71ccde833	Add an overload for aligned deletes which just calls the normal operator delete	2022-12-24 11:49:12 +01:00
apio	f2cc797599	Add a simple ELF loader	2022-12-23 13:09:21 +01:00
apio	e5ae2b0435	TarStream: Make read_contents and friends const	2022-12-23 13:08:31 +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	74235c2c99	Update README.md	2022-12-23 11:06:59 +01:00
apio	e6384ae90d	Use the new toolchain location	2022-12-23 11:06:37 +01:00
apio	575752eb23	Update drone config to pull toolchain from a new purpose-built toolchain archive for CI	2022-12-23 11:04:50 +01:00
apio	c39e54b7c6	Make TarStream::read_contents take any pointer as output	2022-12-23 10:51:55 +01:00
apio	34e6c05cef	Fix it up a bit more	2022-12-23 10:48:00 +01:00