limine/stage1/gdt.asm

25 lines
591 B
NASM

gdt:
dw .size - 1 + 8 ; GDT size
dd .start - 8 ; GDT start address
.start:
; 32-bit code
dw 0xffff ; Limit
dw 0x0000 ; Base (low 16 bits)
db 0x00 ; Base (mid 8 bits)
db 10011011b ; Access
db 11001111b ; Granularity
db 0x00 ; Base (high 8 bits)
; 32-bit data
dw 0xffff ; Limit
dw 0x0000 ; Base (low 16 bits)
db 0x00 ; Base (mid 8 bits)
db 10010011b ; Access
db 11001111b ; Granularity
db 0x00 ; Base (high 8 bits)
.end:
.size: equ .end - .start