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include "const.inc"
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include "const.inc"
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max_processes    equ   255
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max_processes    equ   255
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tss_step         equ   (128+8192) ; tss & i/o - 65535 ports, * 256=557056*4
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tss_step         equ   (128+8192) ; tss & i/o - 65535 ports, * 256=557056*4
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os_data        equ  os_data_l-gdts    ; GDTs
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os_stack       equ  os_data_l-gdts    ; GDTs
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os_code        equ  os_code_l-gdts
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os_code        equ  os_code_l-gdts
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graph_data     equ  3+graph_data_l-gdts
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graph_data     equ  3+graph_data_l-gdts
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tss0           equ  tss0_l-gdts
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tss0           equ  tss0_l-gdts
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use32
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use32
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org $+0x10000
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org $+0x10000
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align 4
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align 4
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B32:
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B32:
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           mov   ax,os_data        ; Selector for os
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           mov   ax,os_stack       ; Selector for os
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           mov   ds,ax
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           mov   ds,ax
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           mov   es,ax
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           mov   es,ax
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           mov   fs,ax
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           mov   fs,ax
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           mov   gs,ax
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           mov   gs,ax
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org OS_BASE+$
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org OS_BASE+$
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align 4
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align 4
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high_code:
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           mov   ax,os_data
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           mov   ds,ax
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           mov   es,ax
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high_code:
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           mov   fs,ax
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           mov   ax,os_stack
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           mov   gs,ax
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           mov   bx,app_data
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           mov   ss,ax
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           add esp, OS_BASE
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           mov   ds,bx
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           mov   es,bx
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           mov   ss,ax
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           mov   fs,bx
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           add esp, OS_BASE
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           mov   gs,bx
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           mov dword [sys_pgdir], 0
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           mov dword [sys_pgdir], 0
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.noSYSCALL:
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.noSYSCALL:
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; -----------------------------------------
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; -----------------------------------------
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           call init_kernel_heap
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           call init_kernel_heap
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           stdcall kernel_alloc, 0x2000
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           stdcall kernel_alloc, 0x2000
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           mov [os_stack_seg], eax
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           mov [os_stack], eax
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           lea esp, [eax+RING0_STACK_SIZE]
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           mov [LFBSize], 0x800000
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           mov [LFBSize], 0x800000
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        ; name for OS/IDLE process
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        ; name for OS/IDLE process
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        mov dword [SLOT_BASE+256+APPDATA.app_name],   dword 'OS/I'
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        mov dword [SLOT_BASE+256+APPDATA.app_name],   dword 'OS/I'
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        mov dword [SLOT_BASE+256+APPDATA.app_name+4], dword 'DLE '
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        mov dword [SLOT_BASE+256+APPDATA.app_name+4], dword 'DLE '
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        mov edi, [os_stack]
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        mov edi, [os_stack_seg]
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        mov dword [SLOT_BASE+256+APPDATA.pl0_stack], edi
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        mov dword [SLOT_BASE+256+APPDATA.pl0_stack], edi
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        add edi, 0x2000-512
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        add edi, 0x2000-512
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        mov ecx, (tss_step)/4
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        mov ecx, (tss_step)/4
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        xor eax, eax
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        xor eax, eax
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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  edi,tss_data+tss_step
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        mov  edi,tss_data
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        mov  [edi+TSS._ss0], os_data
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        mov  [edi+TSS._ss0], os_stack
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        mov  eax,cr3
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        mov  eax,cr3
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        mov  [edi+TSS._cr3],eax
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        mov  [edi+TSS._cr3],eax
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        mov  [edi+TSS._eip],osloop
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        mov  [edi+TSS._eip],osloop
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        mov  [edi+TSS._eflags],dword 0x11202 ; sti and resume
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        mov  [edi+TSS._eflags],dword 0x1202 ; sti and resume
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        mov eax, [os_stack]
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        mov eax, [os_stack_seg]
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        add eax, 0x2000-512
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        add eax, 0x2000-512
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        mov  [edi+TSS._esp], eax
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        mov  [edi+TSS._esp], eax
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        mov  [edi+TSS._cs],os_code
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        mov  [edi+TSS._cs],os_code
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        mov  [edi+TSS._ss],os_data
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        mov  [edi+TSS._ss],os_stack  ;os_stack
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        mov  [edi+TSS._ds],os_data
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        mov  [edi+TSS._ds],app_data  ;os_data
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        mov  [edi+TSS._es],os_data
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        mov  [edi+TSS._es],app_data  ;os_data
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        mov  [edi+TSS._fs],os_data
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        mov  [edi+TSS._fs],app_data  ;os_data
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        mov  [edi+TSS._gs],os_data
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        mov  [edi+TSS._gs],app_data  ;os_data
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        mov  ax,tss0
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        mov  ax,tss0
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        stdcall attach_int_handler, dword 1, irq1
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        stdcall attach_int_handler, dword 1, irq1
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;        mov    [dma_hdd],1
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;        mov    [dma_hdd],1
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        cmp     [IDEContrRegsBaseAddr], 0
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        cmp     [IDEContrRegsBaseAddr], 0
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        setnz   [dma_hdd]
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;        setnz   [dma_hdd]
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        stdcall init_uart_service, DRV_ENTRY
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        sti
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        call change_task
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        stdcall init_uart_service, DRV_ENTRY
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        jmp osloop