Commit graph

10 commits

Author SHA1 Message Date
Andreas Kling
303577df16 Various stubs while trying to get an old coreutils to build. 2018-11-17 15:56:09 +01:00
Andreas Kling
6a0a2c9ab4 Some improvements to signals.
- Add sigprocmask() and sigpending().
- Forked children inherit signal dispositions and masks.
- Exec clears signal dispositions and masks.
2018-11-10 23:30:41 +01:00
Andreas Kling
4914f3b837 Build LibC and Userland with clang as well. 2018-11-09 14:29:00 +01:00
Andreas Kling
153ea704af Add some basic signal support.
It only works for sending a signal to a process that's in userspace code.

We implement reception by synthesizing a PUSHA+PUSHF in the receiving process
(operating on values in the TSS.)
The TSS CS:EIP is then rerouted to the signal handler and a tiny return
trampoline is constructed in a dedicated region in the receiving process.

Also hacked up /bin/kill to be able to send arbitrary signals (kill -N PID)
2018-11-06 10:56:41 +01:00
Andreas Kling
e76312ab63 Lots of minor compat stuff while seeing if bash would build.
We're quite far from bash building, but we'll get there eventually!
2018-11-05 16:40:48 +01:00
Andreas Kling
8039a20611 Tiny LibC things. 2018-11-05 14:54:11 +01:00
Andreas Kling
9bd09454e3 Mark LibC's assertion faillure helper with __NORETURN. 2018-11-04 13:13:57 +01:00
Andreas Kling
9886b27d9c Add getpwent() family of functions to LibC.
Also add a little /etc/passwd database. There's just me in there.
2018-10-31 19:54:25 +01:00
Andreas Kling
2fdc7c2c60 Use ALWAYS_INLINE for ctype inlines. 2018-10-31 15:53:11 +01:00
Andreas Kling
bb90c8ecab A bunch of LibC boilerplate stuff added while trying to get figlet to build. 2018-10-31 02:09:11 +01:00