137 Commits

Author	SHA1	Message	Date
apio	810c4bc257	kernel+libc: Start interfacing with the VFS from userspace (open & close) ... This commit adds open and close syscalls to the kernel, and adds matching wrappers to libc. No read/write support, so file descriptors are kind of useless for now.	2023-03-11 17:45:20 +01:00
apio	ff468db675	kernel/ELF+Scheduler: Use VFS instead of TarStream	2023-03-11 10:34:08 +01:00
apio	ca85a69442	kernel: Save floating-point environment when switching in and out of userspace threads	2023-03-07 20:59:11 +01:00
apio	9274ad0404	kernel, luna: Move Spinlock.h to luna	2023-02-27 15:22:24 +01:00
apio	3a84e4998c	kernel/Thread: Add FIXME	2023-01-31 17:02:49 +01:00
apio	35501407c1	kernel: Stop shouting when creating threads	2023-01-25 21:25:34 +01:00
apio	3a4ca73df7	kernel: Sync log output	2023-01-23 20:42:34 +01:00
apio	139c0b5eb1	Kernel: Make a UserVM wrapper around Bitmap and use that to allocate user VM ... This lets us allocate more than one page of memory from the user side.	2023-01-13 19:05:20 +01:00
apio	586ca19b62	Add a VERY BASIC and hacky way of allocating memory from userspace ... Only supports one-page allocations and doesn't have libc wrappers, which means it has to be invoked using syscall().	2023-01-11 23:02:42 +01:00
apio	84c82a4e75	luna, kernel: More constness	2023-01-10 19:31:41 +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	8ee634d19b	Kernel/Scheduler: Display addresses starting with 0x when creating threads	2023-01-07 12:02:14 +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	5854e5e530	Add newlines at end-of-file	2023-01-02 13:07:29 +01:00
apio	a3595e71a9	Update .clang-format	2022-12-21 20:22:44 +01:00
apio	a11a5dec1f	DoublyLinkedList -> LinkedList	2022-12-19 12:43:23 +01:00
apio	1269a045bd	LinkedList: Add a convenience delayed_for_each() method. ... This is a special way of iterating over the list which permits removing items while iterating.	2022-12-19 12:41:25 +01:00
apio	92a7004c2f	Move the reaping logic to Scheduler	2022-12-19 12:24:15 +01:00
apio	0bdbffe0ca	Spinlock+LockedValue: Add try_lock() methods ... For when you want to lock a resource if possible but not get blocked if it is locked by another thread.	2022-12-18 20:37:26 +01:00
apio	283e641ece	Spinlock+LockedValue: Remove init() functions ... Let's set the default (unlocked) value of Spinlock's underlying atomic to 0, so even if the constructor is not called it stays like that.	2022-12-18 20:36:15 +01:00
apio	751377de0a	Scheduler: Make it possible for a thread to stop existing	2022-12-18 18:43:34 +01:00
apio	1b92fe36b4	Store the stack inside a thread	2022-12-18 18:43:17 +01:00
apio	a89ae9bed7	Run include-what-you-use	2022-12-17 15:51:19 +01:00
apio	d5b9ff1569	Remove unused function definition	2022-12-17 15:30:57 +01:00
apio	f97515bd7e	Kernel: Add Spinlock and LockedValue<T>	2022-12-17 10:55:54 +01:00
apio	6e5d2b5335	Thread: Make g_next_id atomic	2022-12-17 10:50:49 +01:00
apio	a32590ff8a	Call expect_value more	2022-12-16 19:44:33 +01:00
apio	cedcfa9c63	Improve cleanup on MemoryManager failure + add methods that use KernelVM	2022-12-16 19:36:38 +01:00
apio	b6173e2b67	LinkedList: Return Option instead of ENONE if no value	2022-12-08 16:09:04 +01:00
apio	779fda307a	More scope guards!!	2022-12-08 15:01:04 +01:00
apio	1d5d1daa57	Add scope guards	2022-12-08 14:56:11 +01:00
apio	d93d95f23c	Add sleeping mechanism	2022-12-07 16:11:59 +00:00
apio	757cee4693	Add accessors for when you're sure a linked list is not empty	2022-12-07 16:11:59 +00:00
apio	70497c37fb	Check for runnable threads	2022-12-07 16:11:59 +00:00
apio	57517252d8	Add a state to Thread	2022-12-07 16:11:59 +00:00
apio	13f5d09cfd	Add a Scheduler!!	2022-12-07 16:11:59 +00:00
apio	12aa014a3d	Add a Thread class which can be part of a DoublyLinkedList	2022-12-07 16:11:59 +00:00
apio	cf758fdfdc	Initial commit :)	2022-11-13 10:09:09 +01:00
apio	42efc21110	Start implementing read and write support in tmpfs ... write seems to work fine, read just hangs there, waiting.	2022-11-12 20:11:26 +01:00
apio	000ffd1fae	Scheduler: Handle weird cases when the task we're iterating on is null	2022-11-12 18:12:42 +01:00
apio	58fb422161	Kernel: Return a Result in MemoryManager and strdup_from_user	2022-11-12 11:56:40 +01:00
apio	662afad426	Kernel: Add a Result class	2022-11-12 11:30:28 +01:00
apio	1ea216dfd1	Kernel: Rename assert.h to ensure.h ... The macro is named "ensure", the header file should reflect that.	2022-11-09 15:28:35 +01:00
apio	ea94b331fb	Scheduler: Use copy_to_user in a few system calls	2022-11-09 15:20:53 +01:00
apio	033c41cbd7	Kernel: Rework the uid/gid system to make it compliant	2022-11-09 09:54:07 +01:00
apio	44815b08c7	Kernel: Use copy_from_user() and copy_to_user() in read/write ... This is huge. Finally, we can do proper reads/writes with invalid addresses, or big buffers.	2022-11-06 15:19:23 +01:00
apio	9ab3ab7c40	Kernel: Show init's exit status before restarting	2022-11-05 11:56:16 +01:00
apio	0fd31698b2	Kernel: Accept not opened file descriptors in dup2() ... This involves renaming the descriptor_from_fd function to the more appropriately named open_descriptor_from_fd (since we check if the descriptor was opened and error out otherwise), and creating a new function that does not verify that the file descriptor was opened.	2022-11-03 16:52:21 +01:00
apio	c604c074a1	Kernel: Rename ASSERT() to ensure() ... Doesn't get stripped on release builds, so it shouldn't be named assert.	2022-11-02 19:38:15 +01:00