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Code Pull Requests Activity
1,197 Commits 1 Branch 0 Tags
cec04a2858fb079964a39c4cdb889d65d1edd06e
Commit Graph

800 Commits

Author SHA1 Message Date
Bananymous
a11b5ae41f Kernel: align userspace stacks 
I was getting #GP on sse instructions
 2023-08-03 18:09:48 +03:00
Bananymous
91f04ce250 Kernel: Change PageTable API 
Getting free pages not reserves them, so you don't have to hold
the page table lock :)
 2023-08-02 22:09:14 +03:00
Bananymous
926df2b276 Kernel: PageTable now supports reserved pages 
You can now map pages as reserved, so that they will not be given
from get_free_page() or get_free_contiguous_pages().
 2023-08-01 16:35:54 +03:00
Bananymous
217dbca7b7 Kernel: Cleanup returns from any kind on interrupts 2023-08-01 14:23:50 +03:00
Bananymous
679d47131d BuildSystem: Edit build flags regarding sse and warnings 2023-07-31 22:31:17 +03:00
Bananymous
8b1bccb79b Kernel: store/load sse/mmx/fpu state on isr/irq/syscall 
I haven't tested this yet but should be fine. This will be optimized
to only save state from threads that are using it
 2023-07-31 22:28:57 +03:00
Bananymous
e86e755c51 Kernel: Generally improve signals 2023-07-31 22:28:18 +03:00
Bananymous
08cdf88586 Kernel: Cleanup signal trampoline 2023-07-30 15:58:35 +03:00
Bananymous
6f7d97cf94 Kernel: Remove is_in_syscall from Thread 2023-07-30 14:49:51 +03:00
Bananymous
5e434f5131 Kernel: Hardware exceptions now sends signals to userspace 2023-07-30 14:34:15 +03:00
Bananymous
a152d0aac5 Kernel: raise() now force sends signal 2023-07-30 14:17:07 +03:00
Bananymous
879706e6e9 Kernel: Signals are not queued anymore 
Posix doesn't require signal queing if you don't use sigqueue() which
we don't support. Process also has its own pending signal mask.
 2023-07-29 16:54:31 +03:00
Bananymous
a5813f9ba5 Kernel: TTY now sends SIGINT on ^C to foreground process 2023-07-28 18:10:09 +03:00
Bananymous
5652af3384 Kernel: Mark reading section from StorageDevice as terminate critical 2023-07-28 18:09:35 +03:00
Bananymous
22cd9af8cc Kernel: Restructure process and thread termination 
When we want to kill a process, we mark its threads as Terminating
or Terminated. If the thread is in critical section that has to be
finished, it will be in Terminating state until done. Once Scheduler
is trying to execute Terminated thread it will instead delete it.

Once processes last thread is marked Terminated, the processes will
turn it into a cleanup thread, that will allow blocks and memory
cleanup to be done.
 2023-07-28 18:06:20 +03:00
Bananymous
a9cf9bceef Kernel: Rewrite DiskCache 
We now cache only clean pages since I don't want to think about
syncing the disk later.
 2023-07-27 22:22:39 +03:00
Bananymous
6c0f864a6e Kernel: Locks allow locking after locker is invalid 
SpinLock and RecursiveSpinLock will now allow locking after the initial
locker is invalid. This allows us to kill threads even if they are holding
internal locks
 2023-07-27 18:52:51 +03:00
Bananymous
e4509d9482 Kernel: DiskCache uses are now done without interrupts 
This allows disk cache to not be invalid state after partial read/write
 2023-07-27 18:52:51 +03:00
Bananymous
0f23e1f0f4 Kernel: Scheduler can now check if tid is valid 
Tid can become invalid if the thread is already terminated
 2023-07-27 18:34:06 +03:00
Bananymous
642a6aa4ad Kernel: Process::exit() unblocks the whole lock before blocking 2023-07-24 22:29:59 +03:00
Bananymous
432c296b7b Kernel: Implement SYS_GET_PID and SYS_TCSETPGID 
we don't have consept of process groups yet
 2023-07-24 22:29:59 +03:00
Bananymous
b576d373c4 Kernel: TTY now stores foreground process pid 
this will be process pgid when we have process groups
 2023-07-24 22:29:59 +03:00
Bananymous
522aa8e762 Kernel: add Thread::queue_signal() 2023-07-24 22:26:10 +03:00
Bananymous
146802fa4c Kernel: Scheduler can now block threads based on tid 2023-07-24 22:24:21 +03:00
Bananymous
cc8af25d73 Kernel: remove Semaphore::is_blocked 
this will not mean anything after semaphores can spuriously wake up
 2023-07-24 22:23:13 +03:00
Bananymous
f5f4bf58ad Kernel: add is_tty() to inode 2023-07-24 22:19:59 +03:00
Bananymous
3784da0d18 Kernel: you can now ask process if it is userspace process 2023-07-23 18:54:10 +03:00
Bananymous
9eb72f4392 Kernel: OpenFileDesctiptor can now return inode of fd 2023-07-23 18:52:33 +03:00
Bananymous
f7bf6d5e62 Kernel: Change signal kernel API 
return rsp and rip are now stored per thread
 2023-07-23 18:33:10 +03:00
Bananymous
adb14ba373 Kernel: Userspace signal handlers are now called one at a time 
I added a syscall for telling the kernel when signal execution has
finished. We should send a random hash or id to the signal trampoline
that we would include in the syscall, so validity of signal exit can
be confirmed.
 2023-07-23 13:34:53 +03:00
Bananymous
7391d91317 Kernel/LibC: add SYS_SIGNAL/signal() 2023-07-21 20:08:13 +03:00
Bananymous
2149cec29f Kernel: Make signals more POSIX 2023-07-21 20:01:12 +03:00
Bananymous
ad756c36fc Kernel/LibC: Add SYS_KILL/kill() 2023-07-21 19:27:38 +03:00
Bananymous
b56316e9da Kernel: Scheduler now sends queued signals 2023-07-21 19:27:10 +03:00
Bananymous
a989c44211 Kernel: Make signals thread specific 2023-07-21 19:00:59 +03:00
Bananymous
217e5f81cc Kernel: add default signal actions 2023-07-21 18:02:35 +03:00
Bananymous
5f2549b198 BuildSystem: Strip kernel. We will add the map once we use it 2023-07-21 15:47:31 +03:00
Bananymous
dcd4d0daeb Kernel/LibC: Add bareboness signals 
You can now call raise() to raise a signal. Signal handlers are
not yet supported, but the handling works :)
 2023-07-21 15:45:02 +03:00
Bananymous
faf4220b38 Kernel: kernel memory takes now full pml4e 
This allows flags to work properly
 2023-07-21 13:47:05 +03:00
Bananymous
193ddaa2f6 Kernel: remove PAGE_FLAGS_MASK as that was not correct anymore 
After I added NXE bit, the flags mask is no longer valid
 2023-07-21 12:01:50 +03:00
Bananymous
46eb27883a Kernel: Don't map kernel executable memory as writable 2023-07-21 11:17:39 +03:00
Bananymous
2db7cdb71e Kernel: Syscalls now get the interrupt stack 2023-07-21 11:04:16 +03:00
Bananymous
f8a1a10897 Kernel: add NullDevice to /dev/null 2023-07-20 00:06:22 +03:00
Bananymous
adbe13938e Kernel: move Device.h to its own directory 2023-07-19 23:55:38 +03:00
Bananymous
4d5b14753d Kernel: cleanup sys_exec() 
We now scope everyting so desctructors get called
 2023-07-19 23:20:39 +03:00
Bananymous
ba9fa00947 Kernel: fix memory leak in PageTable 
PageTable used to leak 2 pages on creation and other two on deletion
 2023-07-19 23:17:39 +03:00
Bananymous
98cedf155c Kernel: FixedWidthAllocator creation can now fail 2023-07-19 18:07:24 +03:00
Bananymous
88e3998664 Kernel: VirtualRange creation can fail 2023-07-19 17:56:26 +03:00
Bananymous
c0c0bbc1bf Kernel: SYS_FORK can now fail instead of panicing on error 2023-07-19 17:47:12 +03:00
Bananymous
650e1b4fc5 Kernel: Fix bug which made bochs unbootable 
We could not boot if ATABus did not have valid primary device.
 2023-07-13 15:53:09 +03:00