fdb77277a7
Renamed Maybe to maybe. Moved tracking of filehandlers to be per-process rather than global. Various improvements to code.
xnoe2022-06-18 11:42:09 +01:00
da5fc52afe
Updated the KernelInformationStruct, added BGA (Bochs Graphics Extensions) mode termimal, added new system calls to get terminal width. Updated world.bin to calculate sizes. Fixed a bug where GetExhaustive would crash when given a completely null path. Started work on V86 for VBE support.
xnoe2022-05-16 09:57:09 +01:00
dc2fe698a3
Added oneshot timer functionality. Added sleep function. Added proper tracking of physical pages allocated. Made the 0th page invalid. Fixed a 4KiB memory leak when destroying processes. Fixed scrolling colour in terminal.cpp
xnoe2022-04-15 16:15:51 +01:00
0fc40ad5e4
Add system calls for more file system related functionality. Add ls command to world.c. Remove and reorganise certain source code files. Update terminal to no longer have two copies of ANSI escape code handling between write and printf. Massively simplify my printf function. Combine io and ioports.
xnoe2022-04-12 03:42:13 +01:00
c2f857fc88
Removed extra directories
xnoe2022-04-08 00:49:26 +01:00
edd6e82c2c
Remove old boot_stage2 directory
xnoe2022-04-06 20:59:33 +01:00
a0d0454e32
Moved to a new Filesystem, ATA and FAT16 driver.
xnoe2022-04-06 14:46:47 +01:00
ed34174d68
Rename boot_stage2 to bootstage2
xnoe2022-03-04 20:25:17 +00:00
232e333a62
Added VGA Mode Terminal. Updated context_switch and isr.S.base to perform the actual context switch during catchall_return. Program the PIT properly. Implemented timed events. Updated process.cpp. Added a font. Fixed bug in CircularRWBuffer.
core
xnoe2022-02-20 11:30:39 +00:00
2f2a7a3e45
Added file reading via filehandlers. Added support for directories. Processes are now created using filehandlers.
xnoe2022-01-19 16:51:37 +00:00
2bbc81955d
Updated program linker scripts to have link beginning at 0x20 rather than 0x8020. Program binary is now the first thing allocated.
xnoe2022-01-19 12:19:52 +00:00
73c0fe429f
Add ability for other processes to bind to eachother's stdin and stdout. Add PoC for this functionality
xnoe2022-01-17 19:43:13 +00:00
fc2c73225b
Updated ISR code to properly handle interrupts with error codes. Fixed bug where page faults would clobber the kernel stack
xnoe2022-01-09 12:10:57 +00:00
2825c1ff5e
Move to own ISR solution rather than using GCC ISRs. Lots of changes to accomodate that.
xnoe2021-12-17 14:00:52 +00:00
57768784a6
Fixed context_switch's handling of the processes linked list, update idt.cpp to add getPID syscall, update memory.cpp to fix but where find_next_available_from would incorrectly return invalid memory locations
xnoe2021-12-08 18:49:25 +00:00
ca131c71e8
Updated hello.c to print the program's PID. Add getPID syscall.
xnoe2021-12-08 18:48:24 +00:00
02e0bcd70e
Finalise mvoe to Ring 3, add separate kernel stacks for each process, correctly switch between those kernel stacks within context_switch, etc
xnoe2021-12-07 22:04:53 +00:00
cd56b924e1
Correctly mark 0x8a000 + 0x6000 as unavailable, mark the vm_bitmap area as unavailable. Fixed a few comments.
xnoe2021-12-07 22:04:21 +00:00
2ecc53ee91
Moved processes to be in ring 3
xnoe2021-12-02 19:36:52 +00:00
a9ec673b24
Implemented necessary changes for Process destruction. Processes clean up their memory when deleted.
xnoe2021-12-01 17:05:46 +00:00
b7566ef777
Fixed major bug in hashtable.h that caused the hashtable to not actually store any data
xnoe2021-12-01 17:05:17 +00:00
b879ae1e92
Updated world.c to now take user input and print it back to the user when they press enter
xnoe2021-11-29 10:11:46 +00:00
945bd8c2fa
Fixed bug in idt.cpp where context_switch would clobber eax
xnoe2021-11-29 09:15:23 +00:00
5d4454e57a
Remove debug code from terminal.cpp. Update kmain, update world.c, update process.cpp to construct the initial value of EBP correctly.
xnoe2021-11-27 15:56:35 +00:00
d6c1cc1869
Fix bug in terminal.cpp where it would use incorrect pointers in scroll_up, removed old debug code from kmain.cpp, kernel.cpp no longer appends itself to the process list, update process.cpp to take a filename when constructing a new process. Update idt.cpp to plug context_switch in to int 0x20 (IRQ0)
xnoe2021-11-27 13:11:44 +00:00
bfa648d96b
Moved syscall related code to common. Add hello.c and world.c in preparation for testing pre-emptive multitasking
xnoe2021-11-27 13:10:20 +00:00
c84a3ffdea
Add XnoeOS's first non-kernel program. Test systemcalls
xnoe2021-11-27 02:32:43 +00:00
0bb88e4da8
Add system calls, update keybaord, add Terminal* field to kernel. Update process.cpp to load a program called program.bin from disk rather than hardcoding data
xnoe2021-11-27 02:32:28 +00:00
15ca13a985
Update atapio.cpp to use new rather than dumb_alloc, add file_size
xnoe2021-11-27 02:31:23 +00:00
ed67adc9c9
Updated kernel to now have its stack past 0xc0000000. Implemented context switching.
xnoe2021-11-26 20:20:15 +00:00
2dd799b406
Preparations towards context switching
xnoe2021-11-21 16:56:50 +00:00
b79ae4ec95
Updated Hashtable to use xnoe::Maybe, fixed many bugs within hashtable, updated hash
xnoe2021-11-21 16:40:16 +00:00
f581e6b6fe
Completely overhauled how GDT is defined to make it much easier to add more entries to the GDT in the future
xnoe2021-11-21 16:39:31 +00:00
c10c3690a5
A huge amount of changes and additions. Added xnoe::Maybe, fixed xnoe::linkedlist and xnoe::linkedlistelem, fixed bug in Allocator::deallocate, update Process::allocate, implement Process::deallocate, fix operator delete, add Global namespace and Global::allocator, update new, delete, new\[\] and delete\[\], add AllocTracker, etc. Allocations now work how I want them to :D
xnoe2021-11-10 18:31:00 +00:00
768ceddef0
Add hash. Add hashtable. Add linkedlist. Separate Process. Begin work on Process. Update memory. Update tuple. Update Makefile.
xnoe2021-10-27 23:21:37 +01:00
b4375d1269
Initial version of Allocator complete. Added new, delete, new\[\] and delete\[\]. Preparations for Process and Kernel made
xnoe2021-10-25 20:59:49 +01:00
f2e09e98a7
Started work on Allocator class. Update PageMap
xnoe2021-10-25 01:13:29 +01:00
9c887a3a50
Began the process of moving XnoeOS to using more OOP constructs. Added PageDirectory class. Added PageTable class. Added tuple data type. Added beginnings of the skeleton for Allocator and Process.
xnoe2021-10-23 01:34:54 +01:00
2a68860bef
Made kernel C++ now
xnoe2021-10-21 23:19:36 +01:00
cd8bd42ebb
Kernel now handles page faults.
xnoe2021-10-21 22:06:27 +01:00
2dcf083763
Properly print out the e820 entry types. Make kernel_directory and kernel_page_tables available to all. Add a memory unmap function. Update Makefile.
xnoe2021-10-18 13:50:50 +01:00
f44d4ad768
Fixed bug in GDT length calculation in bootloader. Kernel now loads its own GDT so it doesn't clobber itself while touching memory. ATAPIO now loads its own copy of the boot sector so it isn't reliant on 0x7000 being mapped. Removed debug printf statements from a lot of places.
xnoe2021-10-12 21:41:31 +01:00
e2bb3ff634
The kernel is now actually useable with paging enabled.
xnoe2021-10-12 00:53:02 +01:00
1225529708
Fixed paging fully now. Kernel is loaded with virtual memory enabled. Just need to write an allocator and make kernel use virtual memory addresses for its stuff. Restructured codebase to be less messy. Updated Makefile to put binary files under build/ rather than in root directory
xnoe2021-10-11 20:47:04 +01:00
6328062d4f
Fixed structs for PDEs and PTEs, got Qemu now properly maps virtual addresses to physical addresses, still triple faults on but I'm getting closer to getting it fixed.
xnoe2021-10-11 14:02:04 +01:00
7469925ef4
Added e820 to boot.asm
xnoe2021-10-10 17:05:57 +01:00
010ea7eb1d
Fixed bug with capitalisation
xnoe2021-09-25 17:51:18 +01:00
c235befa43
Completely changed how XnoeOS boots, organised the code somewhat, renamed kernel32 to kernel, now uses the 9 sectors after the boot sector to store a 32 bit stage2 loader. No longer spends unnecessary time in real mode. Updated atapio to properly account for the reserved sector count.
xnoe2021-09-25 16:31:19 +01:00
d617de6a0c
Moved some files around in preparation for completely changing the way that booting works
xnoe2021-09-23 15:09:06 +01:00
2c4c76d1e7
Added filename decoding to strings
xnoe2021-09-07 10:46:09 +01:00
ec314d7b1b
We can now read from the disk in protected mode
xnoe2021-09-06 21:32:02 +01:00
b2e2cdb19b
Add inw and outw commands in preparation for ATA-PIO support
xnoe2021-09-06 17:34:48 +01:00
c803f4a38e
Added single split function, added error message to kernel32
xnoe2021-09-06 15:52:12 +01:00
26d231a7c9
Set BPB data from the BIOS, properly support loading data from sectors >63, calculate CHS addressing properly. Calculate certain important values rather than harcoding them.
xnoe2021-09-06 15:35:37 +01:00
8f1e13e749
Added caps lock support to readline
xnoe2021-09-03 12:02:37 +01:00
d9d3abbf62
Moved IDT code wholely to idt.c, add keyboard read support, add readline function, updated Makefile accordingly.
xnoe2021-09-02 20:59:15 +01:00
a184efbc9f
Added non_moving_put, fixed bug with int_to_ functions that would cause them to not properly convert "0" to a string. Added character printing to printf
xnoe2021-09-02 20:58:34 +01:00
b660fa1a0b
We can now receive interrupts
xnoe2021-09-02 18:38:00 +01:00
03e7647fc6
Updated Makefile, started splitting code in to multiple pieces.
xnoe2021-09-02 16:29:07 +01:00
a4d1679723
Added primitive printf implementation, can print decimal ints, hex ints and strings
xnoe2021-09-02 15:09:21 +01:00
76e61b1d71
Linker script now makes use of kernel32_strap.asm in order to ensure that we enter the correct position in kernel32.bin, updated kernel32.ld, Makefile, etc accordingly. Added types.h for convenience.
xnoe2021-09-02 12:46:14 +01:00
1905f3babd
kernel32.bin is now written in C, make necessary modifications to Makefile, .gitignore, boot32.asm, etc to get this working
xnoe2021-08-31 22:50:10 +01:00
07ef9774c2
Added program to enter load kernel32.bin, enter Protected Mode, and then execute kernel32.bin
xnoe2021-08-31 21:35:16 +01:00
79fa2e4e60
Updated kernel to process all input as upper case
xnoe2021-08-31 14:31:35 +01:00
d9cc9a2fb6
Updated kernel and programs so that the segment in which programs are loaded and executed from is no longer fixed and is specified by the kernel
xnoe2021-08-31 12:15:23 +01:00
514f07e009
Updated kernel to allow for inter-segment calls to functions. Use Unix Line Endings for the print function
xnoe2021-08-30 09:11:31 +01:00
a33c25d744
Added programs to properly test inter-segment file read and write
xnoe2021-08-30 08:11:11 +01:00
703a23dfab
Removed very broken and bad code that could've corrupted memory in other segments, updated hello.asm accordingly
xnoe2021-08-30 07:26:54 +01:00
df9f175662
Modified load_file to work directly from the stack
xnoe2021-08-30 07:02:01 +01:00
dev
xnoe