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.code16
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.code16
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	cli
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	cli
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	xorw %ax, %ax
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	xorw %ax, %ax
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	movw %ax, %ds
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	movw %ax, %ds
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	lgdt ap_bootstrap_gdtr_boot	# initialize Global Descriptor Table register
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	lgdt real_bootstrap_gdtr_boot	# initialize Global Descriptor Table register
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	movl %cr0, %eax
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	movl %cr0, %eax
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	orl $1, %eax
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	orl $1, %eax
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	movl %eax, %cr0			# switch to protected mode
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	movl %eax, %cr0			# switch to protected mode
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	# At this point we are in compatibility mode
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	# At this point we are in compatibility mode
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	jmpl $gdtselector(KTEXT_DES), $start64
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	jmpl $gdtselector(KTEXT_DES), $start64
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.code64
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.code64
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start64:
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start64:
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	movq $ctx, %rax
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	movq 0(%rax), %rsp
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	movq (ctx), %rsp
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	call main_ap   # never returns
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	call main_ap   # never returns
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.global ap_bootstrap_gdtr_boot
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ap_bootstrap_gdtr_boot:
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	.word gdtselector(GDT_ITEMS)
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	.long KA2PA(gdt)
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#endif /* __SMP__ */
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#endif /* __SMP__ */