BlueGreycalmElegant

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• This comparison shows the changes necessary to convert path

  → /kernel/trunk/boot/bootcode.inc @ 102

  → /kernel/trunk/boot/bootcode.inc @ 103

  ↔ Reverse comparison

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Regard whitespace Rev 102 → Rev 103

/kernel/trunk/boot/bootcode.inc
140,6 → 140,9
}
pagetable_set:
;eax - physical address
;es:di - page table
;ecx - number of pages to map
or al, 7
@@:
stosd
1047,36 → 1050,10
pop es ; es:di = 6000:0
xor di,di
mov cx,256*map_mem ; Map (mapmem) M
; mov eax,7
; pt2:
; cmp cx,256*(map_mem-8) ; 8 M map to LFB
; jnz pt3
; pop eax
; add eax,7
; pt3:
; cmp cx,256*(map_mem-12) ; 12 M back to linear = physical
; jnz pt4
; mov eax,12*0x100000 + 7
; pt4:
; stosd
; add eax,4096
; loop pt2
; initialize as identity mapping
xor eax, eax
call pagetable_set
; 8M..12M map to LFB
pop eax
; mov cx, 256*4
mov ch, 4
mov di, 2000h
call pagetable_set
push 0x7100
pop es
xor di,di
mov eax,8*0x100000
mov cx,256*4
call pagetable_set
; 4 KB PAGE DIRECTORY
1086,7 → 1063,6
mov cx, 64 / 4
mov eax, 0x60007 ; for 0 M
call pagetable_set
mov dword [es:0x800],0x71007 ;map region 0x80000000-0x803FFFFF to 0x800000-0xCFFFFF
xor si,si
mov di,second_base_address shr 20
mov cx,64/2