68 lines
840 B
Plaintext
68 lines
840 B
Plaintext
section .data
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align 16
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linux_gdt:
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dq 0
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dq 0
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dw 0xffff
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dw 0x0000
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db 0x00
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db 10011011b
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db 11001111b
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db 0x00
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dw 0xffff
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dw 0x0000
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db 0x00
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db 10010011b
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db 11001111b
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db 0x00
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.end:
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align 16
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linux_gdt_ptr:
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dw (linux_gdt.end - linux_gdt) - 1
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dd 0
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bits 32
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section .text
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global linux_spinup
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linux_spinup:
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call .p0
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.p0:
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pop eax
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lea ebx, [eax - (linux_spinup.p0 - linux_gdt_ptr)]
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lea ecx, [eax - (linux_spinup.p0 - linux_gdt)]
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mov [ebx+2], ecx
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lgdt [ebx]
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push 0x10
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call .p1
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.p1:
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add dword [esp], .fj - .p1
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retfd
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.fj:
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mov eax, 0x18
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mov ds, eax
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mov es, eax
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mov fs, eax
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mov gs, eax
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mov ss, eax
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xor ebp, ebp
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xor edi, edi
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xor ebx, ebx
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mov esi, [esp+8] ; boot_params
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cld
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jmp [esp+4]
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