PAGINGINIT32:
;must be called in 32-bits protected mode
push eax
push edx
push ecx
push ebx
push edi
push es

mov ax,SLCT_FLAT_RW
mov es,ax

xor edx,edx
mov eax,dword [ds:DISPMEMTOTAL_32]
mov ebx,400000h
div ebx
mov ecx,eax
cmp edx,0
je .end
inc ecx
.end:
push ecx
;init all PDEs
mov	eax, PTEBASE | PG_P  | PG_USU | PG_RWW
mov edi, PDEBASE
.loop1:
mov dword [es:edi],eax
add edi,4
dec ecx
add eax,4096
cmp ecx,0
jne .loop1
;init all PTEs

pop eax
mov ebx,1024
mul ebx
mov ecx,eax

mov eax, PG_P | PG_USU | PG_RWW
xor edi,edi
mov edi, PTEBASE
.loop2:
mov dword [es:edi],eax
add edi,4
add eax,4096
dec ecx
cmp ecx,0
jne .loop2

mov	eax, PDEBASE
mov	cr3, eax
mov	eax, cr0
or	eax, 80000000h
mov	cr0, eax
jmp	short .end2
.end2:
nop
pop es
pop edi
pop ebx
pop ecx
pop edx
pop eax
ret 

;void* MEMCPY32(void* Source;void* Destination;ULONG32 Size)
MEMCPY32:
push ebp
mov ebp,esp
push esi
push edi
push ecx
push eax

mov ax,SLCT_FLAT_RW
mov es,ax
mov esi,dword [ss:ebp+8]
mov edi,dword [ss:ebp+12]
mov ecx,dword [ss:ebp+16]

.loop:
mov al,byte [es:esi]
mov byte [ds:edi],al
inc esi
inc edi
dec ecx
cmp ecx,0
je .end
jmp .loop
.end:
pop eax
pop ecx
pop edi
pop esi
pop ebp
ret