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Rev 9715 Rev 9926
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;;                                                              ;;
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;;                                                              ;;
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;; Synhronization for MenuetOS.                                 ;;
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;; Synhronization for MenuetOS.                                 ;;
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;; Author: Halyavin Andrey, halyavin@land.ru                    ;;
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;; Author: Halyavin Andrey, halyavin@land.ru                    ;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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$Revision: 9715 $
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$Revision: 9926 $
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struct FRB
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struct FRB
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        list            LHEAD
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        list            LHEAD
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        add     ebp, FRB.pde
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        add     ebp, FRB.pde
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        or      esi, PG_GLOBAL + PAT_WC + PG_UWR
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        or      esi, PG_GLOBAL + PAT_WC + PG_UWR
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        and     esi, [pte_valid_mask]
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        and     esi, [pte_valid_mask]
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        stdcall alloc_kernel_space, 0x1000
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        stdcall alloc_kernel_space, PAGE_SIZE
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        mov     edi, eax
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        mov     edi, eax
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        mov     ebx, 4
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        mov     ebx, 4
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        mov     [ebp], edx
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        mov     [ebp], edx
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        stdcall map_page, edi, eax, PG_SWR
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        stdcall map_page, edi, eax, PG_SWR
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        mov     eax, esi
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        mov     eax, esi
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        mov     ecx, 1024
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        mov     ecx, PAGE_SIZE/4
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@@:
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@@:
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        stosd
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        stosd
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        add     eax, 0x1000
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        add     eax, PAGE_SIZE
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        loop    @B
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        loop    @B
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        add     esi, 0x400000
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        add     esi, 0x400000
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        add     ebp, 4
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        add     ebp, 4
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        sub     edi, 4096
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        sub     edi, PAGE_SIZE
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        dec     ebx
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        dec     ebx
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        jnz     .new_pd
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        jnz     .new_pd
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        stdcall free_kernel_space, edi
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        stdcall free_kernel_space, edi
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        jmp     .ok
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        jmp     .ok
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.fake:
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.fake:
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        mov     [BOOT.mtrr], byte 2
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        mov     [BOOT.mtrr], byte 2
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        stdcall map_page, edi, eax, PG_SWR
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        stdcall map_page, edi, eax, PG_SWR
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; max VGA=640*480*4=1228800 bytes
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; max VGA=640*480*4=1228800 bytes
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; + 32*640*4=81920 bytes for mouse pointer
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; + 32*640*4=81920 bytes for mouse pointer
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        stdcall alloc_pages, ((1228800+81920)/4096)
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        stdcall alloc_pages, ((1228800+81920)/PAGE_SIZE)
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        or      eax, PG_GLOBAL+PG_UWR
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        or      eax, PG_GLOBAL+PG_UWR
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        and     eax, [pte_valid_mask]
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        and     eax, [pte_valid_mask]
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        mov     ecx, (1228800+81920)/4096
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        mov     ecx, (1228800+81920)/PAGE_SIZE
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@@:
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@@:
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        stosd
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        stosd
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        add     eax, 0x1000
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        add     eax, PAGE_SIZE
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        loop    @B
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        loop    @B
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        cld
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        cld
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        pushfd
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        pushfd
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        cli
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        cli
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        mov     [_display.current_lfb], ecx
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        mov     [_display.current_lfb], ecx
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.patch_pde:
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.patch_pde:
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        lea     edi, [eax + PROC.pdt_0+4096-32]   ;last 8 pd entries up to 32Mb framebuffer
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        lea     edi, [eax + PROC.pdt_0 + PAGE_SIZE -32] ;last 8 pd entries up to 32Mb framebuffer
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        mov     ecx, 4
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        mov     ecx, 4
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        rep movsd                               ;patch pde
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        rep movsd                               ;patch pde
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        sub     esi, 16
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        sub     esi, 16
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        mov     eax, [eax + PROC.list.next]       ;next process/address space
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        mov     eax, [eax + PROC.list.next]       ;next process/address space
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        cmp     eax, sys_proc
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        cmp     eax, sys_proc