c0fe4756cb
Kernel: SpinLocks now reschedule if they cannot aquire the lock
...
This allows us to not actually spin doing nothing while waiting for
another (not executing) to release the lock. This api won't probably
work when we get to SMP
2023-06-09 00:53:32 +03:00
5032e79be3
Kernel: Process::exit() now uses the new Scheduler::reschedule()
...
We use this new function while waiting for all blocking threads to
resume execution
2023-06-09 00:49:19 +03:00
1aec3fcedd
Kernel: Scheduler now has reschedule()
...
This can be called from anywhere and just causes the scheduler to
schedule the next thread. This is more efficient and verbose version
of Scheduler::set_current_thread_sleeping(0), since we don't have
to wake other threads or do other verifications.
2023-06-09 00:47:17 +03:00
aec63081e2
Kenrel: Rename Scheduler::reschedule -> Scheduler::timer_reschedule
2023-06-09 00:41:43 +03:00
801025ad7b
Kernel: Big commit. Rewrite ELF loading code
...
We now load ELF files to VirtualRanges instead of using kmalloc.
We have only a fixed 1 MiB kmalloc for big allocations and this
allows loading files even when they don't fit in there.
This caused me to rewrite the whole ELF loading process since the
loaded ELF is not in memory mapped by every process.
Virtual ranges allow you to zero out the memory and to copy into
them from arbitary byte buffers.
2023-06-09 00:37:43 +03:00
59b10c4d25
Kernel: PageTableScope locks the PageTable before disabling interrupts
...
This allows replacing some PageTableScopes with PageTable::lock()
2023-06-09 00:34:41 +03:00
841584ccbd
Kernel: get_free_contiguous_pages works with non-page aligned addresses
...
also fix bug in ordering
2023-06-06 02:03:23 +03:00
24993f6020
LibC: implement setenv, unsetenv, putenv
2023-06-05 22:51:02 +03:00
55ea5c5488
Kernel: add basic support for environment variables
...
exec functions will search files from PATH
2023-06-05 22:51:02 +03:00
290b81dedc
BAN: add StringView::contains(char)
2023-06-05 22:51:02 +03:00
c6b5cc1e07
Kernel: exec now has better posix errors
2023-06-05 21:12:08 +03:00
357081346e
Shell: load old termios for process execution
2023-06-05 21:12:08 +03:00
896b919c9d
Kernel/LibC: pass environ pointer to process
2023-06-05 21:12:08 +03:00
6b73f4d187
Kernel: TTY now actually flushes on ^D
2023-06-05 20:21:46 +03:00
08a806e75d
Kernel: verify that loaded elfs are executable
2023-06-05 19:29:32 +03:00
73c11c3d29
Shell: add bareboness utf8 support
...
This should work as long as TTY provides only valid utf8.
If the utf is invalid, assertion fails and the shell dies.
2023-06-05 18:55:22 +03:00
5af77dcfb9
Shell: we now support left/right arrows
2023-06-05 18:24:41 +03:00
a7dc7ecb90
LibC: abort now prints 'abort()' and exits
...
we used to call assert in abort which then recursively called
abort again.
2023-06-05 18:23:19 +03:00
cf88142856
Kernel: TTY now supports CSI s and u
...
These are commonly supported values to save and load cursor
position
2023-06-05 18:19:13 +03:00
efb355c7be
BuildSystem: disable nls from gcc
2023-06-05 17:55:47 +03:00
d1ad38c8d4
Kernel/LibC: add SYS_STAT and stat(), lstat()
2023-06-05 14:37:14 +03:00
69b94dad00
Base: revert bin and lib symlinks to relative paths
...
Absolute paths fucked up toolchain building and usespace linking,
since g++ was finding host libraries from /usr/lib.
2023-06-05 10:08:01 +03:00
4c40aa6b38
Userspace: Start work on proper shell
2023-06-05 01:42:57 +03:00
5cf3221364
Base: /lib and /bin are now absolute symlinks
2023-06-04 18:12:05 +03:00
40055f023c
LibC: add wait and waitpid
...
Note that wait() doesn't work since only waiting for specified
pid is supported. wait() will just return -1 and set errno to
ECHILD.
2023-06-04 18:00:52 +03:00
9fbb2b9369
Kernel: Add SYS_WAIT
...
This syscall waits for a given pid.
2023-06-04 18:00:52 +03:00
a3aca67eef
Kernel: fork() now clones current thread
...
This is how posix specifies thread cloning during fork
2023-06-04 17:40:37 +03:00
977652ad57
Kernel: Process FixedWidthAllocators come now in 4 sizes
2023-06-04 01:26:43 +03:00
5bf7ca1c80
Kernel: Allocators are now stored in UniqPtr
...
This allows proper memory management, we had some memory leak
2023-06-04 01:25:57 +03:00
1b1f22c35e
Kernel: make load_elf() its own function
2023-06-04 01:24:11 +03:00
479817231a
Kernel: PhysicalRange maps its nodes to kernel vaddr space
...
This keeps the lower half of address space cleaner
2023-06-04 01:20:47 +03:00
e3c5477df4
Kernel: reorder process exit steps
2023-06-04 01:19:04 +03:00
b403155ca9
Kernel: You can specify first vaddr for getting free pages
2023-06-04 01:15:48 +03:00
9fd3111011
BAN: Add UniqPtr
2023-06-04 00:39:20 +03:00
5f339d585c
Kernel: PAGE_FLAG_MASK is now only 0xF
...
We don't care currenly about anything but the last few bits
2023-06-03 20:08:13 +03:00
b168462b43
Kernel: PageTable now has debug_dump
...
This dumps all the mapped pages and their flags
2023-06-03 20:08:13 +03:00
68691faca1
Kernel: boot.S is back to 2 MiB pages
...
bochs doesn't seem to support 1 GiB pages
2023-06-03 18:53:36 +03:00
1e075c248f
BAN: Errors now includes assert.h
2023-06-03 18:53:05 +03:00
d201e65810
BuildSystem: remove sse and sse2 from userspace
2023-06-03 16:05:32 +03:00
3a79880e69
LibC: printf string persision works now
2023-06-03 15:07:02 +03:00
9228df0f23
Kernel: Inode/Device detection is done with overridden bool functions
2023-06-03 13:28:15 +03:00
402ad85583
Kernel: Heap will return 0 if no free page is available
2023-06-03 02:55:31 +03:00
53e91ba98a
Kernel: DiskCache will try to shrink_to_fit after cache cleanup
2023-06-03 02:55:22 +03:00
fd153f3762
Kernel: DiskCache won't crash when running out of kmalloc memory
2023-06-03 02:36:20 +03:00
813d0f1b5f
Kernel: add basic disk cache
...
ATADevices now add disk cache to themselves
2023-06-03 02:23:14 +03:00
2b901abfb1
Kernel: Shell 'memory' now prints heap memory usage
2023-06-03 02:22:18 +03:00
d4289f9e74
Update README.md
2023-06-02 18:43:30 +03:00
3a5d6914ba
Userspace: create_program creates proper cmake files again
2023-06-02 18:42:25 +03:00
e96efea2fb
BuildSystem: all scripts have now bash shebang
...
I could not use the scripts on debian
2023-06-02 18:41:45 +03:00
2df7f8a1e5
BuildSystem: add rule to build libstdc++
...
We can now build libstdc++ and actually link with g++
2023-06-02 18:39:42 +03:00
