75 Commits

Author	SHA1	Message	Date
apio	fb52c67f16	kernel/x86_64: Map kernel-side pages as global to avoid TLB flushes ... Fixes #34.	2024-05-01 18:14:43 +02:00
apio	1d0f18cab9	kernel: Move stack checking and expansion into an architecture-independent file	2024-05-01 10:52:08 +02:00
apio	de6f5c38d8	kernel: Try to grow the stack on stack overflows, up to a maximum of 8MB ... This helps keep GCC happy when compiling slightly complex programs :)	2024-04-28 16:27:18 +02:00
apio	17b44a8ce6	kernel: Reenable stack tracing in kernel-mode exceptions ... Stack tracing in user-mode exceptions was moved to when a signal kills the process, but this isn't done for kernel-mode exceptions so there was no stack trace anymore.	2024-01-05 22:14:31 +01:00
apio	2a85a7473a	kernel: Show stacktraces on all signal terminations	2024-01-04 21:04:24 +01:00
apio	1208d94b37	kernel: Add stack diagnostics to userspace fault reporting	2024-01-04 11:14:19 +01:00
apio	c4d2847da1	kernel: Rework the entire time system to use modular clocks	2023-11-15 23:50:04 +01:00
apio	c75dbc0cbb	kernel: Lookup and print symbols for addresses in backtraces	2023-10-13 22:11:52 +02:00
apio	36fad85396	kernel+init+preinit+wind: Remove the kernel TTY and support only userspace terminals ... Still allow printing text to the console, but without text input or ANSI escape fancy stuff.	2023-09-21 19:31:54 +02:00
apio	27eacac19c	kernel: Add a blinking cursor to the terminal	2023-09-04 11:44:35 +02:00
apio	e8f3dd4cf9	kernel: Add a PS/2 mouse driver	2023-08-02 11:55:45 +02:00
apio	5aad7d3154	kernel/x86_64: Fail on invalid interrupts instead of calling FIXME_UNHANDLED_INTERRUPT ... A FIXME is something that should be changed later, this is a check for something that should never happen.	2023-07-25 18:23:33 +02:00
apio	105ed79f8f	kernel: Reenable userspace stack tracing, but hidden behind a config flag ... Sometimes this is needed for userspace program debugging (such as ports), but sometimes it can crash, so we leave it off by default.	2023-07-25 17:02:09 +02:00
apio	cd6bf745a7	tests+kernel+init: Run tests automatically in a headless way	2023-07-21 14:09:37 +02:00
apio	de6fe7f7c2	kernel+libc+sh: Make the TTY device actually follow termios rules ... Like, so much more termios compatibility!	2023-07-13 20:33:20 +02:00
apio	f629e17ff4	kernel/x86_64: Only show kernel addresses in backtraces ... This avoids walking off into userspace memory where we don't know what could happen.	2023-07-12 16:04:45 +02:00
apio	d27ffce5db	kernel: Move the signal handling logic to after a syscall sets its return value ... When a signal was caught after a syscall, it was doing so without preserving the return value of the syscall.	2023-07-12 13:34:30 +02:00
apio	015419b8f5	kernel: Generate signals when children exit / when faults occur ... Userspace can now catch segfaults!	2023-07-10 20:49:22 +02:00
apio	e60b2a3d2f	kernel: Move thread exit code into a separate common function	2023-06-19 12:33:25 +02:00
apio	7efc3a6ea1	kernel: Show stack traces on page faults + crash the process instead of the whole system on GPFs	2023-06-19 10:45:08 +02:00
apio	7cace9a0d7	kernel: Provide more meaningful panic messages for critical failures	2023-06-17 19:43:25 +02:00
apio	7593947c33	kernel/ATA: Route interrupts to the correct drive	2023-06-16 21:10:33 +02:00
apio	a99c5e325d	kernel: Actually register interrupt handlers properly	2023-06-16 21:10:32 +02:00
apio	739950e8f0	kernel/CPU: Allow passing arbitrary data to interrupt handlers	2023-06-16 21:10:31 +02:00
apio	f0caf010bf	kernel/x86_64: Add a way to register IRQ handlers from other kernel subsystems	2023-06-16 21:10:26 +02:00
apio	11a4f8cc90	kernel: Wake the parent process when a child exits because of a page fault	2023-05-28 21:50:13 +02:00
apio	72dadc6706	kernel: Define a constant to check for default memory access	2023-05-07 21:38:38 +02:00
apio	b25e212880	kernel: Make a generic function for checking memory flags	2023-05-07 21:37:01 +02:00
apio	293a992133	kernel: Add a kernel_wait_for_event() function to avoid weird calls to kernel_wait in kthreads	2023-05-04 23:43:00 +02:00
apio	4a7f68b989	kernel: Add a convenience wake_up() function	2023-05-04 23:35:54 +02:00
apio	3ed9e578c7	kernel/x86_64: Wake the IO thread up only when there is an IO event, instead of polling every 10 ms	2023-05-04 23:07:09 +02:00
apio	abaf24d0da	kernel/CPU: Move some stuff to StringView	2023-05-03 17:35:46 +02:00
apio	77dcfab5ef	kernel: Run the initialization process in a thread ... This way we can give it more stack and also reclaim it later!	2023-04-28 13:23:07 +02:00
apio	5d56638851	kernel: Ignore all non-bootstrap processors	2023-04-22 12:25:43 +02:00
apio	d48d0efb07	kernel: Add names to threads	2023-03-24 21:05:38 +01:00
apio	d63c8abbfd	kernel/x86_64: Terminate page faults in a waitpid-friendly way	2023-03-24 00:52:17 +01:00
apio	03adaa356c	kernel: Avoid printing keypresses twice	2023-03-23 21:33:50 +01:00
apio	d33fccc66f	kernel: Implement reading from /dev/console	2023-03-19 19:15:19 +01:00
apio	cd00e41f59	arch/x86_64: Decode keyboard scancodes	2023-03-19 11:17:43 +01:00
apio	e30eec4213	kernel/x86_64: Avoid kernel panics when a page fault occurs in a userspace thread	2023-03-07 21:08:05 +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	794567327f	kernel, luna: Port non-VFS changes over from pull request #22 ... OwnedPtr, SharedPtr: Add operator bool Option, Result: Make try_move_value() non-const since it modifies the Option kernel: Switch to a stack we control for the main task as soon as we leave early boot Heap: Fix GPF caused when making many small allocations Heap: Avoid accessing a block after it's potentially deleted luna: Skip UBSAN.cpp in CMakeLists as that's not implemented yet luna: Use spinlocks in the heap implementation kernel, luna: Move Spinlock.h to luna Option: Use __builtin_launder to ensure that the compiler doesn't label this as UB SharedPtr: Implement make_shared using adopt_shared SharedPtr: Delete ptr on failure in all adopt_shared* functions	2023-02-25 17:09:03 +01:00
apio	de04c094e7	x86_64: Skip enabling WP for now until I find how to check for its availability	2023-01-23 20:06:45 +01:00
apio	631cdd0204	x86_64/CPU: Skip null instruction pointers on stack trace generation	2023-01-16 20:44:45 +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	fd8a0175d9	Add a syscall infrastructure (our baby program can print to the console now!)	2023-01-05 22:39:56 +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	5854e5e530	Add newlines at end-of-file	2023-01-02 13:07:29 +01:00
apio	7952d1d8a0	x86_64: Add basic keyboard support with an ASYNC DRIVER	2022-12-26 19:59:18 +01:00
apio	0054777e7d	x86_64: Warn if NX is not supported	2022-12-26 12:11:10 +01:00