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Rev 1454 Rev 1455
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;; Copyright (C) KolibriOS team 2004-2008. All rights reserved. ;;
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;; Copyright (C) KolibriOS team 2004-2008. 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: 1454 $
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$Revision: 1455 $
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           mov ecx, 4096/4
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           mov ecx, 4096/4
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           cld
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           cld
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           rep stosd
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           rep stosd
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           mov edx, (sys_pgdir-OS_BASE)+ 0x800; (OS_BASE shr 20)
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           mov edx, (sys_pgdir-OS_BASE)+ 0x800; (OS_BASE shr 20)
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;           bt [cpu_caps-OS_BASE], CAPS_PSE
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           bt [cpu_caps-OS_BASE], CAPS_PSE
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;           jnc .no_PSE
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           jnc .no_PSE
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           mov ebx, cr4
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           mov ebx, cr4
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           or ebx, CR4_PSE
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           or ebx, CR4_PSE
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           mov [edx], eax
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           mov [edx], eax
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           add edx, 4
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           add edx, 4
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           mov edi, [tmp_page_tabs]
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           jmp .map_kernel_heap		; new kernel fits to the first 4Mb - nothing to do with ".map_low"
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.no_PSE:
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           mov eax, PG_SW
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           mov ecx, [tmp_page_tabs]
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           shr ecx, 12
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.map_low:
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           mov edi, [tmp_page_tabs]
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@@:                                   ;
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           stosd
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           add eax, 0x1000
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           dec ecx
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           jnz @B
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           mov edi, [tmp_page_tabs]
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.map_kernel_heap:
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           mov ecx, [pg_data.kernel_tables-OS_BASE]
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           mov ecx, [pg_data.kernel_tables-OS_BASE]
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           shl ecx, 10
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           shl ecx, 10
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           add ebx, 20
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           add ebx, 20
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           dec edx
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           dec edx
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           jnz .scanmap
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           jnz .scanmap
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; mark kernel memory as allocated (unavailable)
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; mark kernel memory as allocated (unavailable)
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           mov ecx, (UPPER_KERNEL_PAGES-OS_BASE)/4096
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           mov ecx, [tmp_page_tabs]
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           mov edx, [pg_data.pages_count-OS_BASE]
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           shr ecx, 12
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           mov edx, [pg_data.pages_count-OS_BASE]
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           add ecx, [pg_data.kernel_tables-OS_BASE]
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           sub edx, ecx
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           sub edx, ecx
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           mov [pg_data.pages_free-OS_BASE], edx
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           mov [pg_data.pages_free-OS_BASE], edx
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           shr eax, 8
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           shr eax, 8
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           and eax, 0x0f
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           and eax, 0x0f
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           ret
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           ret
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endp
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endp
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