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.code64
.global gdt64_tss
gdt64:
gdt64_null:
.word 0xFFF
.word 0x0
.byte 0
.byte 0
.byte 1
.byte 0
gdt64_cs:
.long 0
.byte 0
.byte 0b10011010 # Present and non-conforming Readable
.byte 0b00100000 # Long mode
.byte 0
gdt64_ds:
.long 0
.byte 0
.byte 0b10010010 # Present, writable
.word 0
gdt64_cs_user:
.long 0
.byte 0
.byte 0b11111010 # Present, Privilege 3 and non-conforming Readable
.byte 0b00100000 # Long mode
.byte 0
gdt64_ds_user:
.long 0
.byte 0
.byte 0b11110010 # Present, Privilege 3 and writable
.word 0
gdt64_tss: # Will be setup in the boucane() function
.long 0
.long 0
.long 0
.long 0
gdtr:
.word . - gdt64 - 1
.quad gdt64
.global load_gdt
load_gdt:
lgdt (gdtr)
ret
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