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https://github.com/Zeal-Operating-System/ZealOS.git
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37 lines
462 B
ArmAsm
37 lines
462 B
ArmAsm
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.section .text
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.global lower
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lower:
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pushq $0x18
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addq $(1f - lower), %rax
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pushq %rax
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lretq
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.code32
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1:
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mov $0x20, %eax
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mov %eax, %ds
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mov %eax, %es
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mov %eax, %fs
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mov %eax, %gs
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mov %eax, %ss
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lgdt (%ecx)
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mov %cr0, %eax
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btr $31, %eax
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mov %eax, %cr0
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mov $0xc0000080, %ecx
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xor %eax, %eax
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xor %edx, %edx
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wrmsr
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mov %ebx, %eax
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mov $2, %ebx
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mov $0x7c00, %esp
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jmp *%eax
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