poppin/boot/long_mode.s

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367 B
ArmAsm
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2024-05-23 18:39:00 +00:00
global long_mode_start
extern kmain
section .text
bits 64
long_mode_start:
; load 0 into all data segment registers
mov ax, 0
mov ss, ax
mov ds, ax
mov es, ax
mov fs, ax
mov gs, ax
; call the rust main
extern kmain
call kmain
; print `OKAY` to screen
mov rax, 0x2f592f412f4b2f4f
mov qword [0xb8000], rax
hlt