28 lines
555 B
ArmAsm
28 lines
555 B
ArmAsm
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#GDT
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gdt_start:
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INITSEG = 0x0050
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INITOFF = 0x0000
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.section .rodata
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gdt:
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# Null Descriptor
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.word 0x0000, 0x0000
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.byte 0x00, 0b00000000, 0b00000000, 0x00
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# Code Descriptor
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.word 0xffff, (INITSEG * 0x10 + INITOFF)
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.byte 0x00, 0b10011010, 0b11001111, 0x00
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# Data Descriptor
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.word 0xffff, (INITSEG * 0x10 + INITOFF)
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.byte 0x00, 0b10010010, 0b11001111, 0x00
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gdt_end:
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gdt32ptr:
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.word (gdt_end - gdt - 1)
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.long (gdt + INITSEG * 0x10 + INITOFF)
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gdt64ptr:
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.word (gdt_end - gdt - 1)
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.quad (gdt + INITSEG * 0x10 + INITOFF)
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