Commit Graph

113 Commits

Author SHA1 Message Date
Kevin Lange
e70ebf8857 Big fat cleanup and GCC fix batch 2013-06-05 23:10:36 -07:00
Kevin Lange
0a064bf3da Remove an unused thing 2013-05-22 01:47:43 -07:00
Kevin Lange
fde9c6d652 New ioctl commands and userspace improvements 2013-04-27 01:16:36 -07:00
Kevin Lange
672274d5ae More initial stack space [maybe temporary] 2013-04-26 01:04:21 -07:00
Kevin Lange
0e76870d00 Remove some unused header defines 2013-04-24 20:24:33 -07:00
Kevin Lange
c1ac928af6 Fix mappings so SHM is table aligned 2013-04-24 20:20:34 -07:00
Kevin Lange
ade59a11bc XXX ABI BREAKING CHANGE - New load/heap/stack/shm
Address for program loading, kernel heap, userspace SHM regions, and
stacks have been changed.

Delete:
  toolchain/build
  toolchain/local
  .userspace_check

Run:
  python userspace/build.py clean
  make clean-disk
  make clean
  ./build.sh
2013-04-21 17:35:03 -07:00
Kevin Lange
2de26fafe1 Lazy FPU/SSE, more correct-er 2013-04-16 00:03:23 -07:00
Kevin Lange
41030465a8 Save/restore sse (poorly) 2013-04-15 23:23:56 -07:00
Kevin Lange
71342f842d procfs, and more pty cleanup 2013-03-18 00:52:12 -07:00
Kevin Lange
3a977369af Timed process sleeping (and bug fixes) 2012-12-10 20:28:31 -08:00
Kevin Lange
a5b00112af Add tick counts 2012-12-07 19:06:43 -08:00
Kevin Lange
6cb9664b69 Fix some VESA woes 2012-12-02 23:28:29 -08:00
Kevin Lange
c9448437dc Fix long-standing issues in qemu/bochs
and possibly other environments - fixes the long-standing issue with
keyboard/mouse getting disabled sometimes on bootup, especially if you
tried to interact with the qemu window during the boot process
2012-11-30 19:32:38 -08:00
Kevin Lange
193158079d Bunch of kernel cleanup 2012-11-30 18:26:47 -08:00
Kevin Lange
ed5b9543fb Big commit: Serial console
* fix some terminal bugs (some, not all)
* add a serial device to the VFS
* fix up serial so it works better
* add a serial-console application
* fix a bug in some other stuff relating to allocations
* change size of the terminal described by toaru.terminfo
* adds a new system call
2012-11-28 23:05:19 -08:00
Kevin Lange
5fc2a56c05 Meh.
I'm trying to get PATA access to work on real hardware (and in
VirtualBox, specifically), but it's not working out well. Unless there's
a major breakthrough tomorrow, I'm going to set it aside for a while.
2012-10-17 22:23:10 -07:00
Kevin Lange
7d5eb42400 Userspace keyboard handling
Kernel driver sends raw scancodes, compositor or terminal handle the
rest. Support for F* keys will be added soon, in the mean time userspace
applications can know about the status of modifiers (control, shift,
alt, and super).

Compositor actions have been changed to Alt+Left Click for move and
Alt+Middle Click for resize. I'll work on adding more mouse events once
I get them to be faster (they're annoyingly slow at the moment... I want
more accuracy and less latency).
2012-10-14 19:53:16 -07:00
Kevin Lange
deaa6ad513 Rough support for environment variables
- libc functions not implemented yet
- see `env` for an example of reading variables
- see `esh` for an example of how to set and maintain variables for
  sending to other applications

  Both of the above will be the basis for the libc implementation.
2012-10-07 20:46:35 -07:00
Kevin Lange
77ed41c225 kernel vga term, commas in arguments, ide fixes 2012-10-03 22:03:21 -07:00
Kevin Lange
2eb953f1f1 Massive fixes to the EXT2 driver.
* Works with different block sizes
* Works with different inode sizes
* Tested on a real EXT2 file system made with mkfs.ext2

* MBR reading is available
* You can specify a partition with hdd=0 or hdd=1 etc.

* If you make a "real" disk image, you can get GRUB installed in
  its MBR, toss in a suitable config file, and boot right off the
  disk rather than having to use QEMU to boot the kernel or using
  some silly CDROM ramdisk nonsense.
2012-09-29 00:39:01 -07:00
Kevin Lange
777b442a1e Finish rename of bochs driver to lfb driver.
* Removed some deprecated header stuff.
* Renamed functions / global variables.
2012-09-17 22:46:43 -07:00
Kevin Lange
5ce042f2d8 Deprecate VESA support.
This is in favor of bootloader-assisted mode switching. Grub has a
wonderful option we will exploit to set the video mode.

My laptop supports a couple of 32-bit video modes, which is nice,
because I'm not support 24-bit modes.

I'm not sure whether the super-sketchy video memory locator will work
in the real world, but we'll find out sometime soon.
2012-09-17 22:22:25 -07:00
Kevin Lange
8ed06789ed New debug printing facilities.
- Can now register a userspace file descriptor as the output for kernel
  print statements through kprintf()
- Can set logging levels for debug print messages, which are separate
  from kernel log events and meant to be more readily visible. Log
  events are recorded in a buffer to be viewed later, though nothing
  actually using logging at the moment.
- Serial output is disabled by default now. You can enable it yourself
  by appending the logtoserial argument to the kernel on boot.
2012-09-03 22:35:11 -07:00
Kevin Lange
bba242dd62 Add a testing framework.
This is an automated system by which we boot qemu headless and use the
serial line to capture output from a testing application that is started
on bootup, running with the VGA terminal shell. This might be expanded
to boot to the graphical display within VNC and perform more advanced
tests with the Python shim using a VNC module for Python; we'll see.
2012-09-02 02:24:25 -07:00
Kevin Lange
f68ca25622 Boot-to-shell through kernel argument 'single' 2012-03-27 21:47:25 -05:00
Kevin Lange
531d70f933 Ugly fix to bootup stack fault bug 2012-02-16 15:51:26 -06:00
Markus Schober
4453aba2de can haz threads? 2012-02-15 22:56:16 -06:00
Kevin Lange
cffbb02240 Stuff and things 2012-02-15 20:50:31 -06:00
Markus Schober
45903b204b fixed a subtle bug in shm; added a bunch of utilities to test it 2012-02-10 22:31:38 -06:00
Kevin Lange
ea961ea0e3 Fix compilation warnings 2012-02-08 16:07:54 -06:00
Kevin Lange
65fa12f482 SIGNALS 2012-02-08 02:40:44 -06:00
Markus Schober
aec24c08f1 Attaching nearly works! 2012-02-07 02:29:28 -06:00
Kevin Lange
6590b285b5 Mouse improvements (stability, scaling) 2012-02-04 22:29:46 -06:00
Kevin Lange
89d9265c73 Actually deschedule processes when they are waiting 2012-01-31 19:27:38 -06:00
Kevin Lange
c9d5e735ed Getting ready for thread support 2012-01-28 17:06:07 -06:00
Kevin Lange
339b82e10c [massive commit] Userspace terminal.
Completely removes:
* The kernel terminal (both VGA and graphical)
* The kernel ANSI parser (obviously)
* kgets() function
* Dozens of other functions that were made useless

Adds:
* Userspace terminal that should work (relatively) well
* Keyboard device driver (implemented with a "pipe" object)
* Stabalized interrupt interface
* `clear` uses the c library
* All panic screens and kprintf() output goes to the serial line ONLY
* The kernel boots directly into /bin/terminal (no arguments, unless you
  want to add them (such as -f))
2012-01-25 00:19:52 -06:00
Kevin Lange
6b2ee875d4 Interrupts on/off is a semaphore 2012-01-10 19:54:05 -06:00
Kevin Lange
aa748bc99a Hmpf. 2012-01-10 19:14:30 -06:00
Kevin Lange
edebb12573 [misc] Boot logging to screen 2011-12-26 19:23:58 -06:00
Kevin Lange
c0f45e0b7f VESA mode switching support.
BIOS execution is provided through the `v8086` module, which provides
software emulation of an 8086 processor. It is not currently working
with some BIOSes and may (read: probably will be) replaced with another
emulator (x86emu comes to mind) at some point in the near future. In the
meantime, the default video mode for QEMU works with this and it's
enough to get us on real VESA instead of fake VBE. The `bochs` module
will be renamed in a future commit. Userspace programs have been
adjusted to work at bitrates other than 32 *POORLY*. If you write pixels
left-to-right, they should work fine. They only work with 24-bpp
otherwise, and then you need to be careful of what pixels you are
writing when, or you will overwrite things in other pixels.

You may pass a commandline argument like the following to set display
modes:

  vid=vesa,1024,768

Or for stranger modes under QEMU or Bochs, use the bochs VBE
initializer:

  vid=bochs,1280,720

Note that the address of the linear framebuffer is still found via
hackish probing instead of PCI or trusting the VBE information, so if
you have things in the wrong memory ranges (0xE0000000+), be prepared to
have them get read.

Once again, this entire commit is a massive hack. I am happy that it
worked, and I will continue to make it less hacky, but in the meantime,
this is what we've got.

Happy holidays.
2011-12-25 00:40:40 -06:00
Kevin Lange
fb8f35719d [vid] Prepare for VESA implementation. 2011-12-16 14:00:48 -06:00
Kevin Lange
bf1011e2ba [vid] Support setting video resolution from kernel args 2011-12-16 13:39:34 -06:00
Kevin Lange
fac669e4c3 [mem] Add facilities to track memory usage (naïvely) 2011-12-15 21:47:46 -06:00
Kevin Lange
021585e9ef [misc] Massive improvements to process handling
- Free process resources when a process exits (reaped in next process
  cycle; should probably reap after a wait() or something)
- Free process struct after wait()
- Fix page allocation
- Fix fork() return value for child process (attempted to write to an
  invalid point in kernel-stack memory)

We shouldn't be triple faulting randomly anymore!

Continue investigating the fork() return value, as there was a bugged
return at some point during executon of a test run of thrash-process.
2011-12-15 17:21:28 -06:00
Kevin Lange
5d0f3f0f3d [text/io] Better text output management
- Fixes a number of bugs with VGA text-mode (including crashes and
  colors)
- Makes it far easier to include more console drivers in the kernel,
  though this will be terribly redundant in the future.
- Actually check for video graphics modes before attempting to draw the
  mouse cursor.
2011-12-14 21:50:34 -06:00
Kevin Lange
258e2bfbfe [log] More logging, make output of dmesg prettier 2011-12-14 19:43:14 -06:00
Kevin Lange
6d27ef0ffe [log] vsprintf, fix va logging 2011-12-14 19:19:51 -06:00
Kevin Lange
2fdf993af7 [ide] Minor updates 2011-12-13 00:48:04 -06:00
Kevin Lange
16989b65b0 [locks] Locks 2011-12-10 19:15:12 -06:00