cirosantilli/x86-bare-metal-examples

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Ciro Santilli d5d35fc39a Divide by zero 32-bit works

2015-10-21 22:49:16 +02:00

grub

Failed attempt at modifying a segment descriptor, split GDB to separate file

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hajji

Document hajji working

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multiboot

Failed attempt at modifying a segment descriptor, split GDB to separate file

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nasm

Uniformized macros: push save all registers, and use only GAS macros, no CPP

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no-linker-script

Make osdev example more uniform with the hello world

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printf

Make osdev example more uniform with the hello world

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uefi

Uniformized macros: push save all registers, and use only GAS macros, no CPP

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.gitignore

initial_state.S stopped working...

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about.md

Uniformized macros: push save all registers, and use only GAS macros, no CPP

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apm_shutdown2.S

Remove END

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apm_shutdown.S

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apm.md

bios keyboard

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bibliography.md

Split up getting started, create an about

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bios_background.S

Uniformized macros: push save all registers, and use only GAS macros, no CPP

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bios_carriage_return.S

Uniformized macros: push save all registers, and use only GAS macros, no CPP

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bios_clear_screen.S

Uniformized macros: push save all registers, and use only GAS macros, no CPP

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bios_color.S

Uniformized macros: push save all registers, and use only GAS macros, no CPP

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bios_cursor_position.S

Uniformized macros: push save all registers, and use only GAS macros, no CPP

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bios_detect_memory.S

Uniformized macros: push save all registers, and use only GAS macros, no CPP

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bios_disk_load2.S

Uniformized macros: push save all registers, and use only GAS macros, no CPP

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bios_disk_load.S

Uniformized macros: push save all registers, and use only GAS macros, no CPP

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bios_hello_world.S

Remove END

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bios_keyboard_loop.S

Uniformized macros: push save all registers, and use only GAS macros, no CPP

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bios_keyboard.S

Uniformized macros: push save all registers, and use only GAS macros, no CPP

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bios_newline.S

Uniformized macros: push save all registers, and use only GAS macros, no CPP

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bios_one_char.S

Remove END

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bios_pixel_line.S

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bios_pixel.S

Remove END

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bios_scroll.S

Uniformized macros: push save all registers, and use only GAS macros, no CPP

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bios.md

Protected mode works but is ugly, CS, SS work, failed lidt real mode attempt

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common.h

idt

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cs.S

Refactor print_hex

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debug.md

idt

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formats.md

Split up README

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gdb.gdb

Failed attempt at modifying a segment descriptor, split GDB to separate file

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getting-started.md

Split up getting started, create an about

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idt_zero_divide.S

Divide by zero 32-bit works

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idt.S

idt

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in_beep_illinois.S

Uniformized macros: push save all registers, and use only GAS macros, no CPP

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in_beep.S

Remove END

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in_keyboard.S

Refactor print_hex

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in_mouse.S

Remove END

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in_pit.S

Uniformized macros: push save all registers, and use only GAS macros, no CPP

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in_rtc.S

Uniformized macros: push save all registers, and use only GAS macros, no CPP

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in.md

bios_disk_load works

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infinite_loop.S

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initial_state.S

Uniformized macros: push save all registers, and use only GAS macros, no CPP

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interrupt1.S

Uniformized macros: push save all registers, and use only GAS macros, no CPP

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interrupt_keyboard.S

Uniformized macros: push save all registers, and use only GAS macros, no CPP

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interrupt_loop.S

Uniformized macros: push save all registers, and use only GAS macros, no CPP

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interrupt_zero_divide.S

idt

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interrupt.S

Divide by zero 32-bit works

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io.md

bios keyboard

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lidt.S

Uniformized macros: push save all registers, and use only GAS macros, no CPP

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linker.ld

Protected mode works but is ugly, CS, SS work, failed lidt real mode attempt

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Makefile

Failed attempt at modifying a segment descriptor, split GDB to separate file

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mbr.md

Keyboard input, hex printer

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min.S

Remove END

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modes-of-operation.md

bios_disk_load works

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not-testable-in-userland.md

Segment registers

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protected_mode.S

Failed attempt at modifying a segment descriptor, split GDB to separate file

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README.md

Divide by zero 32-bit works

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reboot.S

Remove END

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segment_base.S

Split up getting started, create an about

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segment_registers.S

Uniformized macros: push save all registers, and use only GAS macros, no CPP

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segmentation.md

Failed attempt at modifying a segment descriptor, split GDB to separate file

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ss.S

Refactor print_hex

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template.S

Uniformized macros: push save all registers, and use only GAS macros, no CPP

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test_print_bytes.S

Uniformized macros: push save all registers, and use only GAS macros, no CPP

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TODO.md

idt

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README.md

x86 Bare Metal Examples

Minimal operating systems to learn low level programming.

Getting started
About
Examples
1. printf
2. min
3. No ld script
4. BIOS
  1. one char
  2. hello world
    1. NASM
  3. newline
  4. carriage return
  5. cursor position
  6. color
  7. background
  8. scroll
    1. clear screen
  9. pixel
    1. pixel line
  10. keyboard
    1. keyboard loop
  11. disk load
    1. disk load 2
  12. detect memory
5. Initial state
6. reboot
7. Not testable in userland
  1. Segment registers
    1. SS
    2. CS
  2. Interrupt
  3. in
  4. Protected mode
    1. Segment base (TODO)
    2. IDT
      1. IDT zero divide
    3. Segmentation fault handler: memory bound, ring, RWX violations
8. APM
  1. APM shutdown
  2. APM shutdown 2
9. Multiboot
10. GRUB
11. TODO not working
  1. UEFI
12. Misc
  1. hajji
Tests
1. PRINT_BYTES
Theory
1. Modes of operation
  1. Segmentation
2. Formats
  1. MBR
3. IO
  1. BIOS
  2. APM
4. Debug
5. Bibliography
TODO