x86-bare-metal-examples/TODO.md

TODO

• cache: wbinvd

• inb outb

  Answer with bare metal Tetris

  • http://stackoverflow.com/questions/8365746/what-does-outb-in-att-asm-mean
  • http://stackoverflow.com/questions/3215878/what-are-in-out-instructions-in-x86-used-for DUPE
  • http://stackoverflow.com/questions/3194139/x86-memory-and-i-o-map DUPE
  • http://stackoverflow.com/questions/14848645/what-does-this-code-do-in-intel-assembly-language/14848821#14848821
  • http://stackoverflow.com/questions/8894241/real-mode-x86-asm-how-are-the-basics-done?rq=1
  • http://wiki.osdev.org/Text_UI

  Port 0x80 on Linux kernel:

  • https://github.com/torvalds/linux/blob/v4.2/arch/x86/boot/boot.h#L78
  • http://stackoverflow.com/questions/6793899/what-does-the-0x80-port-address-connects

• lidt, interrupts, IDTR:

  • http://stackoverflow.com/questions/3392831/what-happens-in-an-interrupt-service-routine
  • http://stackoverflow.com/questions/1817577/what-does-int-0x80-mean-in-assembly-code
  • http://stackoverflow.com/questions/12464329/is-it-possible-to-make-a-custom-interrupt-in-assembly
  • https://en.wikipedia.org/wiki/Double_fault
  • https://en.wikipedia.org/wiki/Triple_fault

  timer, IPT

• paging

• Segment registers /segmentation and protected mode. Then try to answer all of: GDT

  • http://reverseengineering.stackexchange.com/questions/2006/how-are-the-segment-registers-fs-gs-cs-ss-ds-es-used-in-linux
  • http://stackoverflow.com/questions/10810203/what-is-the-fs-gs-register-intended-for
  • http://stackoverflow.com/questions/11540104/designing-gdt-for-a-small-kernel
  • http://stackoverflow.com/questions/12760109/data-segment-in-x86-programs
  • http://stackoverflow.com/questions/14480579/when-does-segment-registers-change
  • http://stackoverflow.com/questions/14661916/gdt-segmented-memory
  • http://stackoverflow.com/questions/15335003/x86-protected-mode-segment-registers-purpose
  • http://stackoverflow.com/questions/17210620/assembler-calculating-a-memory-address-with-register-base?lq=1
  • http://stackoverflow.com/questions/18247106/implementing-gdt-with-basic-kernel
  • http://stackoverflow.com/questions/18736663/what-does-the-colon-mean-in-x86-assembly-gas-syntax-as-in-dsbx
  • http://stackoverflow.com/questions/20717890/how-to-interpret-gs0x14?lq=1
  • http://stackoverflow.com/questions/22446104/do-the-x86-segment-registers-have-special-meaning-usage-on-modern-cpus-and-oses?lq=1
  • http://stackoverflow.com/questions/22962251/how-to-enter-64-bit-mode-on-a-x86-64/22963701#22963701
  • http://stackoverflow.com/questions/26058665/fs-register-in-assembly-code?lq=1
  • http://stackoverflow.com/questions/3819699/what-does-ds40207a-mean-in-assembly
  • http://stackoverflow.com/questions/4903906/assembly-using-the-data-segment-register-ds answer with minimal example and mention QEMU vs real hardwre http://wiki.osdev.org/Segmentation
  • http://stackoverflow.com/questions/518261/meaning-of-x86-assembler-instruction?lq=1
  • http://stackoverflow.com/questions/5364270/concept-of-mov-ax-cs-and-mov-ds-ax?lq=1
  • http://stackoverflow.com/questions/6611346/amd64-fs-gs-registers-in-linux
  • http://stackoverflow.com/questions/7844963/how-to-interpret-segment-register-accesses-on-x86-64?lq=1
  • http://stackoverflow.com/questions/9172837/idt-without-gdt-using-grub
  • http://stackoverflow.com/questions/9249315/what-is-gs-in-assembly?rq=1
  • http://stackoverflow.com/questions/928082/why-does-the-mov-instruction-have-to-be-used-this-way?lq=1

  64-bit:

  • http://stackoverflow.com/questions/22962251/how-to-enter-64-bit-mode-on-a-x86-64/22963701#22963701
  • http://stackoverflow.com/questions/21165678/why-64-bit-mode-long-mode-doesnt-use-segment-registers
  • http://stackoverflow.com/questions/19502868/meaning-of-cs-and-ss-registers-on-x86-64-linux-in-userland
  • http://stackoverflow.com/questions/7844963/how-to-interpret-segment-register-accesses-on-x86-64

  lgdt:

  • http://stackoverflow.com/questions/21128311/the-physical-address-of-global-descriptor-table
  • http://stackoverflow.com/questions/7415515/problem-accessing-control-registers-cr0-cr2-cr3
  • http://stackoverflow.com/questions/10671147/how-do-x86-page-tables-work?rq=1
  • http://stackoverflow.com/questions/14354626/how-to-create-two-separate-segments-in-global-descriptor-table
  • http://stackoverflow.com/questions/14812160/near-and-far-jmps

  Local descriptor table:

  • http://stackoverflow.com/questions/14299893/any-tutorials-on-how-to-set-up-a-ldt?rq=1

• WRMSR https://en.wikipedia.org/wiki/Model-specific_register http://x86.renejeschke.de/html/file_module_x86_id_326.html

• BIOS

  • pages

• ACPI

• multithreading:

  • http://stackoverflow.com/questions/7308391/how-is-concurrency-done-in-intel-x86-assembly
  • http://stackoverflow.com/questions/980999/what-does-multicore-assembly-language-look-like
  • http://stackoverflow.com/questions/714905/threads-in-x86-assembler-using-the-gnu-assember-as
  • 1af6451852/Chapter_07_Threads

• play with hardware

  • set a pixel on screen in protected mode http://stackoverflow.com/questions/14419088/assembly-draw-a-pixel-on-the-screen-in-protected-mode
  • USB
  • networking
  • GPU...

• POST https://en.wikipedia.org/wiki/Power-on_self-test

• exemplify all CPU modes

  • http://stackoverflow.com/questions/20848412/modes-of-intel-64-cpu

• https://en.wikipedia.org/wiki/Task_state_segment

  Not used by Linux: http://stackoverflow.com/questions/2711044/why-doesnt-linux-use-the-hardware-context-switch-via-the-tss

• keyboard through interrupt (high level BIOS int 16 that waits for input done)

  • keyboard protected mode: http://stackoverflow.com/questions/219120/x86-assembly-protected-mode-keyboard-access
  • oszur does it with the i8042: http://stackoverflow.com/questions/22744624/keyboard-interrupt-handler-for-own-kernel-c

• mouse