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Rev 8217 Rev 8284
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;; Copyright (C) KolibriOS team 2004-2020. All rights reserved. ;;
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;; Copyright (C) KolibriOS team 2004-2020. 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: 8217 $
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$Revision: 8284 $
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align 4
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align 4
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proc mem_test
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proc mem_test
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        and     [edi+e820entry.size.lo], not 0xFFF
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        and     [edi+e820entry.size.lo], not 0xFFF
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        jz      .unusable
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        jz      .unusable
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; ignore memory after 4 GiB
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; ignore memory after 4 GiB
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        cmp     [edi+e820entry.addr.hi], 0
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        cmp     [edi+e820entry.addr.hi], 0
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        jnz     .unusable
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        jnz     .unusable
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        mov     eax, [edi]
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        mov     eax, [edi+e820entry.addr.lo]
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        cmp     [edi+e820entry.size.hi], 0
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        cmp     [edi+e820entry.size.hi], 0
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        jnz     .overflow
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        jnz     .overflow
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        add     eax, [edi+e820entry.size.lo]
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        add     eax, [edi+e820entry.size.lo]
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        jnc     @f
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        jnc     @f
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.overflow:
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.overflow: