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104 Commits

Author SHA1 Message Date
Andreas Kling
46181cf023 Oops, finish WindowServer rename. 2019-01-15 21:46:15 +01:00
Andreas Kling
e42f090ed3 Rename WindowComposer -> WindowServer. 
I keep referring to it as the windowing server anyway.
 2019-01-15 21:16:04 +01:00
Andreas Kling
2f74c2f430 Add basic PTY support. 
For now, there are four hard-coded PTYs: /dev/pt{m,s}[0123]
Use this in the Terminal to open a pty pair and spawn a shell.
 2019-01-15 06:30:19 +01:00
Andreas Kling
b0e3f73375 Start refactoring the windowing system to use an event loop. 
Userspace programs can now open /dev/gui_events and read a stream of GUI_Event
structs one at a time.

I was stuck on a stupid problem where we'd reenter Scheduler::yield() due to
having one of the has_data_available_for_reading() implementations using locks.
 2019-01-14 14:42:49 +01:00
Andreas Kling
8f8c8d1ca3 Start working on a GUI kernel API. 2019-01-13 02:02:34 +01:00
Andreas Kling
bb28c31531 Get rid of the "root widget" concept in WindowManager. 
Instead just create a GraphicsBitmap wrapper around the display framebuffer
and teach Painter how to draw directly into a GraphicsBitmap.
 2019-01-12 03:42:50 +01:00
Andreas Kling
a3c39ea9d6 Throw up some widgets on screen so we can see what they look like. 2019-01-11 04:10:07 +01:00
Andreas Kling
e740f1195a Add a simple PS/2 mouse device. 
It's not hooked up to anything just yet, but it does read movement deltas.
 2019-01-11 02:28:53 +01:00
Andreas Kling
f6d2c3ed87 Hook everything up to run the GUI on top of the kernel. 
Okay things kinda sorta work. Both Bochs and QEMU now boot into GUI mode.
There's a ton of stuff that doesn't make sense and so many things to rework.

Still it's quite cool to have made it this far. :^)
 2019-01-10 23:19:29 +01:00
Andreas Kling
659c54e32b Switch into 1024x768x32bpp VESA LFB mode at boot. 
This is going to be pretty cool once I can hook up the Widgets/ code to it.
 2019-01-09 02:29:11 +01:00
Andreas Kling
ba91ab1038 Don't omit frame pointers. Duh. This fixes /proc/PID/stack listings. 2019-01-04 19:02:21 +01:00
Andreas Kling
503e32552c Move kernel symbolication code out of init.cpp and into its own KSym files. 
Also use a simple array of { dword, const char* } for the KSyms and put the
whole shebang in kmalloc_eternal() memory. This was a fugly source of
kmalloc perma-frag.
 2018-12-24 23:01:09 +01:00
Andreas Kling
7bc41532be Remove FS::read_entire_inode() in favor of Inode::read_entire(). 2018-12-21 17:45:42 +01:00
Andreas Kling
bbfae19238 Move DoubleBuffer to its own files. 2018-12-03 01:51:44 +01:00
Andreas Kling
44036f32bc Move ELFLoader code into Kernel/. 2018-12-02 20:27:08 +01:00
Andreas Kling
de4604ac95 Finally hook up the mkdir code to a syscall. 
Added a /bin/mkdir that makes directories. How very neat :^)
There are various limitations because of missing functionality.
 2018-11-18 15:02:16 +01:00
Andreas Kling
f1404aa948 Add primitive FIFO and hook it up to sys$pipe(). 
It's now possible to do this in bash:

cat kernel.map | fgrep List

This is very cool! :^)
 2018-11-12 01:28:46 +01:00
Andreas Kling
2ac5e14c08 Merge VGA into VirtualConsole. 2018-11-10 16:26:18 +01:00
Andreas Kling
b8264e7d47 Merge Disk namespace into the IDEDiskDevice class. 2018-11-10 15:15:31 +01:00
Andreas Kling
ebf308d413 Make kernel build with clang. 
It's a bit faster than g++ and seems to generate perfectly fine code.
The kernel is also roughly 10% smaller(!)
 2018-11-09 12:22:31 +01:00
Andreas Kling
47b7eeda44 Fix all current build warnings in the kernel. 2018-11-09 10:03:21 +01:00
Andreas Kling
71a2942a0a Make it run in QEMU. 
Looks like the problem was the weirdly-sized floppy image file.
I guess QEMU was inferring the floppy disk geometry from the image size.
 2018-11-08 02:03:19 +01:00
Andreas Kling
39d2fcbbee Move the scheduler code to its own class. 
This is very mechanical.
 2018-11-07 22:15:02 +01:00
Andreas Kling
83172e6a4b Rename FileHandle to FileDescriptor. 2018-11-07 11:37:54 +01:00
Andreas Kling
e088121b3a Fix sys$sigaction() to return the old action metadata if requested. 2018-11-07 10:48:44 +01:00
Andreas Kling
d7a41579e5 Miscellaneous compat work while seeing if GNU coreutils would build. 2018-11-07 10:23:16 +01:00
Andreas Kling
422b5403e5 Merge ExecSpace into ELFLoader. 2018-11-04 13:52:53 +01:00
Andreas Kling
05565bad58 Make IO helpers inline and use immediate-encoded ports when possible. 2018-11-02 10:14:26 +01:00
Andreas Kling
3e532ac7b6 Process now maps regions immediately when they are allocated. 
This avoids having to do a separate MM.mapRegionsForTask() pass.

Also, more Task => Process renaming that I apparently hadn't saved yet.
 2018-11-01 13:15:46 +01:00
Andreas Kling
68739dc43e Start working on virtual consoles/TTYs. 
This is a mess right now, but I'd rather commit as I go.
 2018-10-30 13:59:29 +01:00
Andreas Kling
1d4af51250 Add a VFS::absolutePath(InodeIdentifier). 
This is pretty inefficient for ext2fs. We walk the entire block group
containing the inode, searching through every directory for an entry
referencing this inode.

It might be a good idea to cache this information somehow. I'm not sure
how often we'll be searching for it.

Obviously there are multiple caching layers missing in the file system.
 2018-10-28 12:20:25 +01:00
Andreas Kling
e904f193c1 Canonicalize the path used by sh. 
With a bunch of LibC work to support the feature. LibC now initializes
AK::StringImpl by default. It's now fine to use AK in LibC/Userland! :^)
 2018-10-28 09:36:21 +01:00
Andreas Kling
9a71c7759a Implement loading of linked ELF executables. 
This took me a couple hours. :^)

The ELF loading code now allocates a single region for the entire
file and creates virtual memory mappings for the sections as needed.

Very nice!
 2018-10-27 14:56:52 +02:00
Andreas Kling
5cfeeede7c Remove the obsolete "Userspace" stuff. 2018-10-27 00:41:23 +02:00
Andreas Kling
c928b06218 Add a very hackish /proc/PID/stack. 
It walks the stack and identifies anything that looks like a kernel symbol.
This could be a lot more sophisticated.
 2018-10-26 22:33:15 +02:00
Andreas Kling
dc6f57f19c Add gettimeofday() syscall and LibC wrappers gettimeofday() and time(). 
This only has second accuracy right now, I'll work out subseconds later.
 2018-10-25 17:36:18 +02:00
Andreas Kling
4bd69d4352 Remove old DatBuffer class. 
(also increase the number of sectors loaded by the bootloader in the
since I just noticed we were at the limit. This is not the ideal way
of doing this.)
 2018-10-25 10:50:30 +02:00
Andreas Kling
de7c54545a Remove age-old IPC stuff that wasn't working anyway. 
I'll make a fresh start with IPC code when I get there.
 2018-10-25 10:39:39 +02:00
Andreas Kling
3676214a62 Remove remains of the old "panel" task. 
...and grow the console by 1 row! :^)
 2018-10-23 15:47:03 +02:00
Andreas Kling
ed2422d7af Start adding a basic /proc filesystem and a "ps" utility. 2018-10-23 12:04:03 +02:00
Andreas Kling
63764b3a65 Import very modest Userland. 2018-10-22 14:06:22 +02:00
Andreas Kling
bae59609e3 Move kprintf to its own file. It has nothing to do with VGA anymore. 2018-10-22 13:20:35 +02:00
Andreas Kling
a9ca75c98b Add IRQHandler class that can be subclasses to handle an IRQ. 
Also move Keyboard to a class implementation using this pattern.
 2018-10-22 12:58:29 +02:00
Andreas Kling
a70bfb87d5 Add a Console device and start refactoring screen output. 2018-10-21 21:59:43 +02:00
Andreas Kling
c149d2a8f0 Build ELFLoader into Kernel. 2018-10-18 15:03:10 +02:00
Andreas Kling
77299cf54d Add basic paging. Only identity maps the bottom 4MB as a start. 2018-10-17 23:13:55 +02:00
Andreas Kling
e0f31d38a2 Add -fno-pic -fno-pie to build flags. 2018-10-17 16:49:30 +02:00
Andreas Kling
39fa1eb2c2 Print the contents of motd.txt on boot. 2018-10-17 12:07:39 +02:00
Andreas Kling
705832f387 List the root directory after mounting /. 
So cool that it works! It's spewing out a bunch of terminal escape sequences
that the OS console obviously doesn't support, but we'll get there too.
 2018-10-17 11:47:14 +02:00
Andreas Kling
d2425495ca VirtualFileSystem class builds inside Kernel. 2018-10-17 11:40:58 +02:00
Andreas Kling
9171521752 Integrate ext2 from VFS into Kernel. 2018-10-17 10:57:23 +02:00
Andreas Kling
aec8ab0a60 Add the basic character devices to kernel. 2018-10-16 14:33:16 +02:00
Andreas Kling
12e515735b Add a simple IDEDiskDevice class that implements DiskDevice from VFS. 2018-10-16 14:17:43 +02:00
Andreas Kling
9396108034 Import the "gerbert" kernel I worked on earlier this year. 
It's a lot crappier than I remembered it. It's gonna need a lot of work.
 2018-10-16 11:02:00 +02:00