orion_old/TODO.org

TODO for Orion

• Kernel
  • VGA
    • Newline support
    • Implement terminal scrolling
    • Colors changing (for ASCII arts)
  • Improve Build
  • Global Constructors Table
  • Serial
  • Interrupt Description Table
  • Memory
• LibC
  • Add some more arguments (decorators, codes) for printf
  • Memory

Kernel

VGA

DONE Newline support

TODO Implement terminal scrolling

Move all lines up one row and leave blank row at the bottom

TODO Colors changing (for ASCII arts)

• Add better VGA driver (to display colors)

TODO Improve Build

• Add arguments

TODO Global Constructors Table

• Init GDT in early kernel
• Add LDT (Local Descriptor Table)

TODO Serial

• Print debuging messages to Serial
• Add more arguments to serial_printf function
• Add input from Serial
• Add debug hexdump function
• Add printing to serial with registers state

TODO Interrupt Description Table

• Init IDT in early kernel
• Add Some Exceptions

TODO Memory

• Paging
• Permissions
• Memory Map

LibC

TODO Add some more arguments (decorators, codes) for printf

%c

character value

%s

string of characters

%d

signed integer

%i

signed integer

%f

floating point value

%e

scientific notation, with a lowercase “e”

%E

scientific notation, with a uppercase “E”

%g

use %e or %f

%G

use %E or %f

%o

octal

%u

unsigned integer

%x

unsigned hexadecimal, with lowercase letters

%X

unsigned hexadecimal, with uppercase letters

%p

a pointer

%n

the argument shall be a pointer to an integer in which the number of characters written is placed

%%

shall be a % sign

TODO Memory

• malloc
• free