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928 Commits 1 Branch 0 Tags 3.9 MiB
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928 Commits

Author SHA1 Message Date
Bananymous b7fc2dc3d0 Kenrel: Rename Scheduler::reschedule -> Scheduler::timer_reschedule 2023-06-09 00:41:43 +03:00
Bananymous 8af390e0f6 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
Bananymous 96d6453ea8 Kernel: PageTableScope locks the PageTable before disabling interrupts 
This allows replacing some PageTableScopes with PageTable::lock()
 2023-06-09 00:34:41 +03:00
Bananymous 2b9900e56e Kernel: get_free_contiguous_pages works with non-page aligned addresses 
also fix bug in ordering
 2023-06-06 02:03:23 +03:00
Bananymous 86f58f60cb LibC: implement setenv, unsetenv, putenv 2023-06-05 22:51:02 +03:00
Bananymous 064ce568c2 Kernel: add basic support for environment variables 
exec functions will search files from PATH
 2023-06-05 22:51:02 +03:00
Bananymous 6aff459e1c BAN: add StringView::contains(char) 2023-06-05 22:51:02 +03:00
Bananymous 0b1b4d8f7e Kernel: exec now has better posix errors 2023-06-05 21:12:08 +03:00
Bananymous 3fc2c3529a Shell: load old termios for process execution 2023-06-05 21:12:08 +03:00
Bananymous b0e9ab0519 Kernel/LibC: pass environ pointer to process 2023-06-05 21:12:08 +03:00
Bananymous 668517a723 Kernel: TTY now actually flushes on ^D 2023-06-05 20:21:46 +03:00
Bananymous 649f08ec78 Kernel: verify that loaded elfs are executable 2023-06-05 19:29:32 +03:00
Bananymous 2f2c298c68 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
Bananymous 90e48970e6 Shell: we now support left/right arrows 2023-06-05 18:24:41 +03:00
Bananymous 480842a203 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
Bananymous 5425394880 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
Bananymous a365813fa9 BuildSystem: disable nls from gcc 2023-06-05 17:55:47 +03:00
Bananymous 9d64dbd5c2 Kernel/LibC: add SYS_STAT and stat(), lstat() 2023-06-05 14:37:14 +03:00
Bananymous 30bb61a775 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
Bananymous 1f36ed0cf9 Userspace: Start work on proper shell 2023-06-05 01:42:57 +03:00
Bananymous d54c76f88a Base: /lib and /bin are now absolute symlinks 2023-06-04 18:12:05 +03:00
Bananymous cbb9f47ee5 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
Bananymous b68d5a5833 Kernel: Add SYS_WAIT 
This syscall waits for a given pid.
 2023-06-04 18:00:52 +03:00
Bananymous 94d2090777 Kernel: fork() now clones current thread 
This is how posix specifies thread cloning during fork
 2023-06-04 17:40:37 +03:00
Bananymous e97585daf9 Kernel: Process FixedWidthAllocators come now in 4 sizes 2023-06-04 01:26:43 +03:00
Bananymous 924fc2118c 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
Bananymous 51f4c0c750 Kernel: make load_elf() its own function 2023-06-04 01:24:11 +03:00
Bananymous 37b93da650 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
Bananymous 35e739dcdd Kernel: reorder process exit steps 2023-06-04 01:19:04 +03:00
Bananymous 8352392b38 Kernel: You can specify first vaddr for getting free pages 2023-06-04 01:15:48 +03:00
Bananymous 413f05bfca BAN: Add UniqPtr 2023-06-04 00:39:20 +03:00
Bananymous dc1aff58ed 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
Bananymous 9f75d9cfe5 Kernel: PageTable now has debug_dump 
This dumps all the mapped pages and their flags
 2023-06-03 20:08:13 +03:00
Bananymous a42af7e973 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
Bananymous 2ce244d303 BAN: Errors now includes assert.h 2023-06-03 18:53:05 +03:00
Bananymous a775a920d0 BuildSystem: remove sse and sse2 from userspace 2023-06-03 16:05:32 +03:00
Bananymous 4f84faf392 LibC: printf string persision works now 2023-06-03 15:07:02 +03:00
Bananymous a4cb5d8360 Kernel: Inode/Device detection is done with overridden bool functions 2023-06-03 13:28:15 +03:00
Bananymous da7f09cf82 Kernel: Heap will return 0 if no free page is available 2023-06-03 02:55:31 +03:00
Bananymous 0166af472b Kernel: DiskCache will try to shrink_to_fit after cache cleanup 2023-06-03 02:55:22 +03:00
Bananymous 884d986bd6 Kernel: DiskCache won't crash when running out of kmalloc memory 2023-06-03 02:36:20 +03:00
Bananymous 59b807189f Kernel: add basic disk cache 
ATADevices now add disk cache to themselves
 2023-06-03 02:23:14 +03:00
Bananymous fb1c7015b1 Kernel: Shell 'memory' now prints heap memory usage 2023-06-03 02:22:18 +03:00
Bananymous d4123f62b2 Update README.md 2023-06-02 18:43:30 +03:00
Bananymous a3f410d1a1 Userspace: create_program creates proper cmake files again 2023-06-02 18:42:25 +03:00
Bananymous 1d19a4bffe BuildSystem: all scripts have now bash shebang 
I could not use the scripts on debian
 2023-06-02 18:41:45 +03:00
Bananymous 271dd91292 BuildSystem: add rule to build libstdc++ 
We can now build libstdc++ and actually link with g++
 2023-06-02 18:39:42 +03:00
Bananymous 9bd4d68f9c Kernel: Shell ls and stat now properly show symlinks 2023-06-02 18:22:56 +03:00
Bananymous 3c3c7826ef LibC: Add simple definition for realloc 
The syscall just crashes the kernel currently. I will implement
this when needed
 2023-06-02 17:56:13 +03:00
Bananymous 2207357b93 LibC: add __cxa_at_exit() for libc 2023-06-02 17:50:55 +03:00