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Rev 2455 Rev 2466
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;; Copyright (C) KolibriOS team 2004-2012. All rights reserved. ;;
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;; Copyright (C) KolibriOS team 2004-2012. All rights reserved. ;;
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;; Distributed under terms of the GNU General Public License    ;;
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;; Distributed under terms of the GNU General Public License    ;;
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;;                                                              ;;
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;;                                                              ;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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$Revision: 2455 $
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$Revision: 2466 $
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        xor     esi, esi; esi will hold total amount of memory
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        xor     esi, esi; esi will hold total amount of memory
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        xor     edx, edx; edx will hold maximum allocatable address
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        xor     edx, edx; edx will hold maximum allocatable address
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.calcmax:
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.calcmax:
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; round all to pages
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; round all to pages
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        mov     eax, [edi]
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        mov     eax, [edi]
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        cmp     [edi+16], byte 1
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        jne     .unusable
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        test    eax, 0xFFF
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        test    eax, 0xFFF
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        jz      @f
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        jz      @f
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        neg     eax
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        neg     eax
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        and     eax, 0xFFF
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        and     eax, 0xFFF
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        add     [edi], eax
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        add     [edi], eax
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        sub     eax, [edi]
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        sub     eax, [edi]
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        mov     [edi+8], eax
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        mov     [edi+8], eax
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        add     esi, eax
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        add     esi, eax
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        jmp     .usable
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        jmp     .usable
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.unusable:
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.unusable:
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        and     dword [edi+8], 0
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;        and     dword [edi+8], 0
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.usable:
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.usable:
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        add     edi, 20
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        add     edi, 20
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        loop    .calcmax
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        loop    .calcmax
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.calculated:
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.calculated:
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        mov     [MEM_AMOUNT-OS_BASE], esi
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        mov     [MEM_AMOUNT-OS_BASE], esi
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; scan through memory map and mark free areas as available
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; scan through memory map and mark free areas as available
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        mov     ebx, BOOT_VAR-OS_BASE + 0x9104
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        mov     ebx, BOOT_VAR-OS_BASE + 0x9104
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        mov     edx, [ebx-4]
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        mov     edx, [ebx-4]
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.scanmap:
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        cmp     [ebx+16], byte 1
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        jne     .next
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.scanmap:
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        mov     ecx, [ebx+8]
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        mov     ecx, [ebx+8]
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        shr     ecx, 12; ecx = number of pages
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        shr     ecx, 12; ecx = number of pages
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        jz      .next
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        jz      .next
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        mov     edi, [ebx]
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        mov     edi, [ebx]