23 lines
656 B
NASM
23 lines
656 B
NASM
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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; vulcanOS Kernel ;
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; Developed by Marco 'icebit' Cetica ;
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; (c) 2019-2021 ;
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; Released under GPLv3 ;
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; https://github.com/ice-bit/iceOS ;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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global gdt_flush ; for drivers/gdt.c
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section .text
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gdt_flush:
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mov eax, [esp+4] ; get address of gdt_ptr_t
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lgdt [eax] ; Load GDT
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mov ax, 0x10 ; offset in the GDT of the data segment
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mov ds, ax ; Load data segment selectors
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mov es, ax
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mov fs, ax
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mov gs, ax
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mov ss, ax
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jmp 0x08:.flush ; offset in the GDT of the code segment
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.flush:
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ret
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