46 Commits

Author SHA1 Message Date
Kevin Lange
0f344f2900 Rewrite fork/clone.
This is still a bit ugly, needs cleanup.
Fixes that weird GCC issue.
2013-06-06 18:04:13 -07:00
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
c8aa5462a8 Cleaner syscall handling 2013-05-08 22:11:02 -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
ef459bdaad More rough stubs and fixes 2013-03-20 21:24:55 -07:00
Kevin Lange
a9d895a923 unify logging 2012-12-07 18:33:07 -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
6e909acd07 Save/restore FPU state on task switch 2012-10-21 20:17:47 -07:00
Kevin Lange
cea692b577 And now with more login.
* Also cleaning up some kernel logging options here.
* You can log in as local or root with passwords local and toor
* Graphical sessions are still buggy, so don't kill that terminal.
2012-09-12 23:19:07 -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
8096d89c16 [temp] Stop freeing file nodes (XXX) 2012-04-03 13:17:26 -05:00
Kevin Lange
0ce4e02cba Actually release directories again so we don't run out of RAM 2012-03-27 19:38:04 -05:00
Kevin Lange
639881f931 Make things faster, better, stronger, etc. 2012-03-27 19:09:11 -05:00
Kevin Lange
816ddc8f3e Lots of process cleanup implemented; improved cursor rendering 2012-03-14 22:03:55 -05:00
Kevin Lange
2791e7fd35 We've been doing some really stupid shit here... 2012-03-10 18:20:34 -06:00
Kevin Lange
de7a984938 Fix a bunch of bugs in signal handling and scheduling 2012-02-20 23:31:00 -06:00
Kevin Lange
7c41cd7080 Fix compile warnings 2012-02-17 01:27:56 -06:00
Kevin Lange
220e9cbc57 Hopefully fix some latent signal bugs 2012-02-17 01:21:11 -06:00
Kevin Lange
678ed81c65 Extensive stability fixes. I think I finally squashed those stack bugs. 2012-02-16 22:43:41 -06:00
Kevin Lange
a1d821de9b Various fixes 2012-02-16 14:38:50 -06:00
Kevin Lange
a72f9bc7cf Fix stack bug. 2012-02-16 14:31:40 -06:00
Kevin Lange
c67d2796ef Finish threading (might still be some bugs) 2012-02-16 01:06:44 -06:00
Markus Schober
4453aba2de can haz threads? 2012-02-15 22:56:16 -06:00
Kevin Lange
cc7354d298 Fix bad process switch handling on empty queues 2012-02-11 18:27:28 -06:00
Kevin Lange
180342822a Merge branch 'master' of github.com:klange/osdev 2012-02-08 20:09:33 -06:00
Kevin Lange
79fcaf5136 Stability fixes. 2012-02-08 20:09:28 -06:00
Markus Schober
27d0deed5b [shm] fork() and execve() don't wreak havoc on shm 2012-02-08 19:59:34 -06:00
Kevin Lange
aa73f6fc6e Fix a task 0 exit bug 2012-02-08 19:30:35 -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
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
6c042aba53 Pipes 2012-01-24 18:40:25 -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
ddc71135af [proc] Fix some latent management bugs 2011-12-15 21:08:48 -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
37c3ab67ce [sys] Fix fork syscall return values 2011-12-15 15:31:18 -06:00
Kevin Lange
8c548c0db0 Restructure directory tree for kernel modules 2011-12-14 22:15:47 -06:00