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.intel_syntax noprefix
.global get_current_sp
.global get_current_sbp
.global halt
.global get_cr2
.global set_sp
.global set_sbp
.global flush_tlb
.global set_cr3
.global get_cr3
.global enable_paging
.global wait_for_interrupt
get_current_sp:
mov eax, esp
sub eax, 4
ret
get_current_sbp:
mov eax, ebp
ret
set_sp:
mov ecx, [esp] # store the return address in ecx
mov eax, [esp + 4]
mov esp, eax
jmp ecx # jump to the return address instead of doing a ret as the stack values may have changed
set_sbp:
mov eax, [esp + 4]
mov ebp, eax
ret
wait_for_interrupt:
sti
hlt
ret
halt:
hlt
jmp $
ret
get_cr2:
mov eax, cr2
ret
flush_tlb:
mov eax, cr3
mov cr3, eax
ret
set_cr3:
mov eax, [esp + 4]
mov cr3, eax
ret
get_cr3:
mov eax, cr3
ret
enable_paging:
mov eax, cr0
or eax, 0b10000000000000000000000000000000
mov cr0, eax
ret
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