96 lines
1.1 KiB
Plaintext
96 lines
1.1 KiB
Plaintext
section .rodata
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invalid_idt:
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dq 0, 0
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section .text
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extern flush_irqs
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%macro push32 1
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sub rsp, 4
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mov dword [rsp], %1
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%endmacro
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extern gdt
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global common_spinup
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bits 64
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common_spinup:
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cli
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lgdt [rel gdt]
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lidt [rel invalid_idt]
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lea rbx, [rel .reload_cs]
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push 0x28
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push rbx
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retfq
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.reload_cs:
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mov eax, 0x30
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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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push r8
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push r9
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push rcx
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push rdx
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call flush_irqs
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pop rdx
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pop rcx
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pop r9
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pop r8
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mov rbp, rsp
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cmp esi, 4
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jle .no_stack_args
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.push_stack_args:
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dec esi
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mov eax, [rbp + 8 + rsi*8]
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push32 eax
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test esi, esi
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jnz .push_stack_args
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.no_stack_args:
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push32 r9d
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push32 r8d
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push32 ecx
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push32 edx
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lea rbx, [rel .go_32]
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push 0x18
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push rbx
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retfq
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bits 32
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.go_32:
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mov eax, 0x20
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mov ds, ax
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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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xor eax, eax
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lldt ax
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mov eax, 0x00000011
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mov cr0, eax
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mov ecx, 0xc0000080
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xor eax, eax
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xor edx, edx
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wrmsr
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xor eax, eax
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mov cr4, eax
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call edi
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