WebSVN – Kolibri OS – Diff – /kernel/trunk/kernel.asm


;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;
;; Copyright (C) KolibriOS team 2004-2009. All rights reserved.
;; PROGRAMMING:
;; Ivan Poddubny
;; Marat Zakiyanov (Mario79)
;; VaStaNi
;; Trans
;; Mihail Semenyako (mike.dld)
;; Sergey Kuzmin (Wildwest)
;; Andrey Halyavin (halyavin)
;; Mihail Lisovin (Mihasik)
;; Andrey Ignatiev (andrew_programmer)
;; NoName
;; Evgeny Grechnikov (Diamond)
;; Iliya Mihailov (Ghost)
;; Sergey Semyonov (Serge)
;; Johnny_B
;; SPraid (simba)
;; Hidnplayr
;; Alexey Teplov ()
;;
;; Data in this file was originally part of MenuetOS project which is
;; distributed under the terms of GNU GPL. It is modified and redistributed as
;; part of KolibriOS project under the terms of GNU GPL.
;;
;; Copyright (C) MenuetOS 2000-2004 Ville Mikael Turjanmaa
;; PROGRAMMING:
;;
;; Ville Mikael Turjanmaa, villemt@itu.jyu.fi
;; - main os coding/design
;; Jan-Michael Brummer, BUZZ2@gmx.de
;; Felix Kaiser, info@felix-kaiser.de
;; Paolo Minazzi, paolo.minazzi@inwind.it
;; quickcode@mail.ru
;; Alexey, kgaz@crosswinds.net
;; Juan M. Caravaca, bitrider@wanadoo.es
;; kristol@nic.fi
;; Mike Hibbett, mikeh@oceanfree.net
;; Lasse Kuusijarvi, kuusijar@lut.fi
;; Jarek Pelczar, jarekp3@wp.pl
;;
;; KolibriOS is distributed in the hope that it will be useful, but WITHOUT ANY
;; WARRANTY. No author or distributor accepts responsibility to anyone for the
;; consequences of using it or for whether it serves any particular purpose or
;; works at all, unless he says so in writing. Refer to the GNU General Public
;; License (the "GPL") for full details.
;
;; Everyone is granted permission to copy, modify and redistribute KolibriOS,
;; but only under the conditions described in the GPL. A copy of this license
;; is supposed to have been given to you along with KolibriOS so you can know
;; your rights and responsibilities. It should be in a file named COPYING.
;; Among other things, the copyright notice and this notice must be preserved
;; on all copies.
;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 
include 'macros.inc'
 
$Revision: 1312 $
 
 
USE_COM_IRQ     equ 1      ; make irq 3 and irq 4 available for PCI devices
 
; Enabling the next line will enable serial output console
;debug_com_base  equ 0x3f8  ; 0x3f8 is com1, 0x2f8 is com2, 0x3e8 is com3, 0x2e8 is com4, no irq's are used
 
include "proc32.inc"
include "kglobals.inc"
include "lang.inc"
 
include "const.inc"
max_processes    equ   255
tss_step         equ   (128+8192) ; tss & i/o - 65535 ports, * 256=557056*4
 
 
os_stack       equ  (os_data_l-gdts)    ; GDTs
os_code        equ  (os_code_l-gdts)
graph_data     equ  (3+graph_data_l-gdts)
tss0           equ  (tss0_l-gdts)
app_code       equ  (3+app_code_l-gdts)
app_data       equ  (3+app_data_l-gdts)
app_tls        equ  (3+tls_data_l-gdts)
pci_code_sel   equ  (pci_code_32-gdts)
pci_data_sel   equ  (pci_data_32-gdts)
 
 
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;
;;   Included files:
;;
;;   Kernel16.inc
;;    - Booteng.inc   English text for bootup
;;    - Bootcode.inc  Hardware setup
;;    - Pci16.inc     PCI functions
;;
;;   Kernel32.inc
;;    - Sys32.inc     Process management
;;    - Shutdown.inc  Shutdown and restart
;;    - Fat32.inc     Read / write hd
;;    - Vesa12.inc    Vesa 1.2 driver
;;    - Vesa20.inc    Vesa 2.0 driver
;;    - Vga.inc       VGA driver
;;    - Stack.inc     Network interface
;;    - Mouse.inc     Mouse pointer
;;    - Scincode.inc  Window skinning
;;    - Pci32.inc     PCI functions
;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 
 
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;                                                                      ;;
;;                  16 BIT ENTRY FROM BOOTSECTOR                        ;;
;;                                                                      ;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 
use16
                  org   0x0
                  jmp   start_of_code
 
version db    'Kolibri OS  version 0.7.5.0      ',13,10,13,10,0
 
include "boot/bootstr.inc"     ; language-independent boot messages
include "boot/preboot.inc"
 
if lang eq en
include "boot/booteng.inc"     ; english system boot messages
else if lang eq ru
include "boot/bootru.inc"      ; russian system boot messages
include "boot/ru.inc"          ; Russian font
else if lang eq et
include "boot/bootet.inc"      ; estonian system boot messages
include "boot/et.inc"          ; Estonian font
else
include "boot/bootge.inc"      ; german system boot messages
end if
 
include "boot/bootcode.inc"    ; 16 bit system boot code
include "bus/pci/pci16.inc"
include "detect/biosdisk.inc"
 
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;                                                                      ;;
;;                  SWITCH TO 32 BIT PROTECTED MODE                     ;;
;;                                                                      ;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 
 
; CR0 Flags - Protected mode and Paging
 
        mov ecx, CR0_PE
 
; Enabling 32 bit protected mode
 
        sidt    [cs:old_ints_h]
 
        cli                             ; disable all irqs
        cld
        mov     al,255                  ; mask all irqs
        out     0xa1,al
        out     0x21,al
   l.5: in      al, 0x64                ; Enable A20
        test    al, 2
        jnz     l.5
        mov     al, 0xD1
        out     0x64, al
   l.6: in      al, 0x64
        test    al, 2
        jnz     l.6
        mov     al, 0xDF
        out     0x60, al
   l.7: in      al, 0x64
        test    al, 2
        jnz     l.7
        mov     al, 0xFF
        out     0x64, al
 
        lgdt    [cs:tmp_gdt]            ; Load GDT
        mov     eax, cr0                ; protected mode
        or      eax, ecx
        and     eax, 10011111b *65536*256 + 0xffffff ; caching enabled
        mov     cr0, eax
        jmp     pword os_code:B32       ; jmp to enable 32 bit mode
 
align 8
tmp_gdt:
 
        dw     23
        dd     tmp_gdt+0x10000
        dw     0
 
        dw     0xffff
        dw     0x0000
        db     0x00
        dw     11011111b *256 +10011010b
        db     0x00
 
        dw     0xffff
        dw     0x0000
        db     0x00
        dw     11011111b *256 +10010010b
        db     0x00
 
include "data16.inc"
 
use32
org $+0x10000
 
align 4
B32:
           mov   ax,os_stack       ; Selector for os
           mov   ds,ax
           mov   es,ax
           mov   fs,ax
           mov   gs,ax
           mov   ss,ax
           mov   esp,0x3ec00       ; Set stack
 
; CLEAR 0x280000 - HEAP_BASE
 
           xor   eax,eax
           mov   edi,0x280000
           mov   ecx,(HEAP_BASE-OS_BASE-0x280000) / 4
           cld
           rep   stosd
 
           mov   edi,0x40000
           mov   ecx,(0x90000-0x40000)/4
           rep   stosd
 
; CLEAR KERNEL UNDEFINED GLOBALS
           mov   edi, endofcode-OS_BASE
           mov   ecx, (uglobals_size/4)+4
           rep   stosd
 
; SAVE & CLEAR 0-0xffff
 
           xor   esi, esi
           mov   edi,0x2F0000
           mov   ecx,0x10000 / 4
           rep   movsd
           mov   edi,0x1000
           mov   ecx,0xf000 / 4
           rep   stosd
 
           call test_cpu
           bts [cpu_caps-OS_BASE], CAPS_TSC     ;force use rdtsc
 
           call init_BIOS32
; MEMORY MODEL
           call mem_test
           call init_mem
           call init_page_map
 
; ENABLE PAGING
 
           mov eax, sys_pgdir-OS_BASE
           mov cr3, eax
 
           mov eax,cr0
           or eax,CR0_PG+CR0_WP
           mov cr0,eax
 
           lgdt [gdts]
           jmp pword os_code:high_code
 
align 4
bios32_entry    dd ?
tmp_page_tabs   dd ?
 
use16
org $-0x10000
include "boot/shutdown.inc" ; shutdown or restart
org $+0x10000
use32
 
__DEBUG__ fix 1
__DEBUG_LEVEL__ fix 1
include 'init.inc'
 
org OS_BASE+$
 
align 4
high_code:
           mov ax, os_stack
           mov bx, app_data
           mov cx, app_tls
           mov ss, ax
           add esp, OS_BASE
 
           mov ds, bx
           mov es, bx
           mov fs, cx
           mov gs, bx
 
           bt [cpu_caps], CAPS_PGE
           jnc @F
 
           or dword [sys_pgdir+(OS_BASE shr 20)], PG_GLOBAL
 
           mov ebx, cr4
           or ebx, CR4_PGE
           mov cr4, ebx
@@:
           xor eax, eax
           mov dword [sys_pgdir], eax
           mov dword [sys_pgdir+4], eax
 
           mov eax, cr3
           mov cr3, eax           ; flush TLB
 
; SAVE REAL MODE VARIABLES
        mov     ax, [BOOT_VAR + 0x9031]
        mov     [IDEContrRegsBaseAddr], ax
; --------------- APM ---------------------
 
; init selectors
    mov ebx,[BOOT_VAR+0x9040]			; offset of APM entry point
    movzx eax,word [BOOT_VAR+0x9050] 	; real-mode segment base address of
										; protected-mode 32-bit code segment
    movzx ecx,word [BOOT_VAR+0x9052] 	; real-mode segment base address of
										; protected-mode 16-bit code segment
    movzx edx,word [BOOT_VAR+0x9054] 	; real-mode segment base address of
										; protected-mode 16-bit data segment
 
    shl    eax, 4
    mov    [dword apm_code_32 + 2], ax
    shr    eax, 16
    mov    [dword apm_code_32 + 4], al
 
    shl    ecx, 4
    mov    [dword apm_code_16 + 2], cx
    shr    ecx, 16
    mov    [dword apm_code_16 + 4], cl
 
    shl    edx, 4
    mov    [dword apm_data_16 + 2], dx
    shr    edx, 16
    mov    [dword apm_data_16 + 4], dl
 
    mov    dword[apm_entry], ebx
    mov    word [apm_entry + 4], apm_code_32 - gdts
 
    mov    eax, [BOOT_VAR + 0x9044]    ; version & flags
    mov    [apm_vf], eax
; -----------------------------------------
;        movzx eax,byte [BOOT_VAR+0x9010]	; mouse port
;        mov   [0xF604],byte 1  ;al
		mov	al, [BOOT_VAR+0x901F]   	; DMA access
        mov	[allow_dma_access], al
        movzx eax, byte [BOOT_VAR+0x9000]        ; bpp
        mov [ScreenBPP],al
 
        mov [_display.bpp], eax
        mov [_display.vrefresh], 60
        mov [_display.disable_mouse],  __sys_disable_mouse
 
        movzx eax,word [BOOT_VAR+0x900A]  ; X max
        mov [_display.width], eax
        dec   eax
        mov   [Screen_Max_X],eax
        mov   [screen_workarea.right],eax
        movzx eax,word [BOOT_VAR+0x900C]  ; Y max
        mov [_display.height], eax
        dec   eax
        mov   [Screen_Max_Y],eax
        mov   [screen_workarea.bottom],eax
        movzx eax,word [BOOT_VAR+0x9008]  ; screen mode
        mov   [SCR_MODE],eax
        mov   eax,[BOOT_VAR+0x9014]       ; Vesa 1.2 bnk sw add
        mov   [BANK_SWITCH],eax
        mov   [BytesPerScanLine],word 640*4         ; Bytes PerScanLine
        cmp   [SCR_MODE],word 0x13          ; 320x200
        je    @f
        cmp   [SCR_MODE],word 0x12          ; VGA 640x480
        je    @f
        movzx eax, word[BOOT_VAR+0x9001]        ; for other modes
        mov   [BytesPerScanLine],ax
        mov [_display.pitch], eax
@@:
        mov eax, [_display.width]
        mul [_display.height]
        mov [_WinMapSize], eax
 
        mov     esi, BOOT_VAR+0x9080
        movzx   ecx, byte [esi-1]
        mov     [NumBiosDisks], ecx
        mov     edi, BiosDisksData
        rep     movsd
 
; GRAPHICS ADDRESSES
 
        and     byte [BOOT_VAR+0x901e],0x0
        mov     eax,[BOOT_VAR+0x9018]
        mov     [LFBAddress],eax
 
        cmp     [SCR_MODE],word 0100000000000000b
        jge     setvesa20
        cmp     [SCR_MODE],word 0x13
        je      v20ga32
        mov     [PUTPIXEL],dword Vesa12_putpixel24  ; Vesa 1.2
        mov     [GETPIXEL],dword Vesa12_getpixel24
        cmp     [ScreenBPP],byte 24
        jz      ga24
        mov     [PUTPIXEL],dword Vesa12_putpixel32
        mov     [GETPIXEL],dword Vesa12_getpixel32
      ga24:
        jmp     v20ga24
      setvesa20:
        mov     [PUTPIXEL],dword Vesa20_putpixel24  ; Vesa 2.0
        mov     [GETPIXEL],dword Vesa20_getpixel24
        cmp     [ScreenBPP],byte 24
        jz      v20ga24
      v20ga32:
        mov     [PUTPIXEL],dword Vesa20_putpixel32
        mov     [GETPIXEL],dword Vesa20_getpixel32
      v20ga24:
        cmp     [SCR_MODE],word 0x12                ; 16 C VGA 640x480
        jne     no_mode_0x12
        mov     [PUTPIXEL],dword VGA_putpixel
        mov     [GETPIXEL],dword Vesa20_getpixel32
      no_mode_0x12:
 
; -------- Fast System Call init ----------
; Intel SYSENTER/SYSEXIT (AMD CPU support it too)
           bt [cpu_caps], CAPS_SEP
           jnc .SEnP   ; SysEnter not Present
           xor edx, edx
           mov ecx, MSR_SYSENTER_CS
           mov eax, os_code
           wrmsr
           mov ecx, MSR_SYSENTER_ESP
;           mov eax, sysenter_stack ; Check it
           xor     eax, eax
           wrmsr
           mov ecx, MSR_SYSENTER_EIP
           mov eax, sysenter_entry
           wrmsr
.SEnP:
; AMD SYSCALL/SYSRET
           cmp byte[cpu_vendor], 'A'
           jne .noSYSCALL
           mov eax, 0x80000001
           cpuid
           test edx, 0x800  ; bit_11 - SYSCALL/SYSRET support
           jz .noSYSCALL
           mov ecx, MSR_AMD_EFER
           rdmsr
           or eax, 1   ; bit_0 - System Call Extension (SCE)
           wrmsr
 
        ; !!!! It`s dirty hack, fix it !!!
        ; Bits of EDX :
        ; Bit 3116 During the SYSRET instruction, this field is copied into the CS register
        ;  and the contents of this field, plus 8, are copied into the SS register.
        ; Bit 150 During the SYSCALL instruction, this field is copied into the CS register
        ;  and the contents of this field, plus 8, are copied into the SS register.
 
        ; mov   edx, (os_code + 16) * 65536 + os_code
           mov edx, 0x1B0008
 
           mov eax, syscall_entry
           mov ecx, MSR_AMD_STAR
           wrmsr
.noSYSCALL:
; -----------------------------------------
        stdcall alloc_page
        stdcall map_page, tss-0xF80, eax, PG_SW
        stdcall alloc_page
        inc     eax
        mov     [SLOT_BASE+256+APPDATA.io_map], eax
        stdcall map_page, tss+0x80, eax, PG_SW
        stdcall alloc_page
        inc     eax
        mov     dword [SLOT_BASE+256+APPDATA.io_map+4], eax
        stdcall map_page, tss+0x1080, eax, PG_SW
 
; LOAD IDT
 
           call build_interrupt_table ;lidt is executed
          ;lidt [idtreg]
 
           call init_kernel_heap
           stdcall kernel_alloc, RING0_STACK_SIZE+512
           mov [os_stack_seg], eax
 
           lea esp, [eax+RING0_STACK_SIZE]
 
           mov [tss._ss0], os_stack
           mov [tss._esp0], esp
           mov [tss._esp], esp
           mov [tss._cs],os_code
           mov [tss._ss],os_stack
           mov [tss._ds],app_data
           mov [tss._es],app_data
           mov [tss._fs],app_data
           mov [tss._gs],app_data
           mov [tss._io],128
;Add IO access table - bit array of permitted ports
           mov edi, tss._io_map_0
           xor eax, eax
           not eax
           mov ecx, 8192/4
           rep stosd                 ; access to 4096*8=65536 ports
 
           mov  ax,tss0
           ltr  ax
 
           mov [LFBSize], 0x800000
           call init_LFB
           call init_fpu
           call init_malloc
 
           stdcall alloc_kernel_space, 0x51000
           mov [default_io_map], eax
 
           add eax, 0x2000
           mov [ipc_tmp], eax
           mov ebx, 0x1000
 
           add eax, 0x40000
           mov [proc_mem_map], eax
 
           add eax, 0x8000
           mov [proc_mem_pdir], eax
 
           add eax, ebx
           mov [proc_mem_tab], eax
 
           add eax, ebx
           mov [tmp_task_pdir], eax
 
           add eax, ebx
           mov [tmp_task_ptab], eax
 
           add eax, ebx
           mov [ipc_pdir], eax
 
           add eax, ebx
           mov [ipc_ptab], eax
 
           stdcall kernel_alloc, (unpack.LZMA_BASE_SIZE+(unpack.LZMA_LIT_SIZE shl \
                                 (unpack.lc+unpack.lp)))*4
 
           mov [unpack.p], eax
 
           call init_events
           mov eax, srv.fd-SRV_FD_OFFSET
           mov [srv.fd], eax
           mov [srv.bk], eax
 
           mov edi, irq_tab
           xor eax, eax
           mov ecx, 16
           rep stosd
 
;Set base of graphic segment to linear address of LFB
        mov     eax,[LFBAddress]          ; set for gs
        mov     [graph_data_l+2],ax
        shr     eax,16
        mov     [graph_data_l+4],al
        mov     [graph_data_l+7],ah
 
        stdcall kernel_alloc, [_WinMapSize]
        mov [_WinMapAddress], eax
 
        xor  eax,eax
        inc  eax
        mov [CURRENT_TASK],eax		;dword 1
        mov [TASK_COUNT],eax		;dword 1
        mov [TASK_BASE],dword TASK_DATA
        mov [current_slot], SLOT_BASE+256
 
; set background
 
        mov   [BgrDrawMode],eax
        mov   [BgrDataWidth],eax
        mov   [BgrDataHeight],eax
        mov    [mem_BACKGROUND], 4
        mov [img_background], static_background_data
 
        mov     [SLOT_BASE + 256 + APPDATA.dir_table], sys_pgdir - OS_BASE
 
        stdcall kernel_alloc, 0x10000/8
        mov     edi, eax
        mov     [network_free_ports], eax
        or      eax, -1
        mov     ecx, 0x10000/32
        rep     stosd
 
; REDIRECT ALL IRQ'S TO INT'S 0x20-0x2f
 
        call  rerouteirqs
 
; Initialize system V86 machine
        call    init_sys_v86
 
; TIMER SET TO 1/100 S
 
        mov   al,0x34              ; set to 100Hz
        out   0x43,al
        mov   al,0x9b              ; lsb    1193180 / 1193
        out   0x40,al
        mov   al,0x2e              ; msb
        out   0x40,al
 
; Enable timer IRQ (IRQ0) and hard drives IRQs (IRQ14, IRQ15)
; they are used: when partitions are scanned, hd_read relies on timer
; Also enable IRQ2, because in some configurations
; IRQs from slave controller are not delivered until IRQ2 on master is enabled
        mov     al, 0xFA
        out     0x21, al
        mov     al, 0x3F
        out     0xA1, al
 
;!!!!!!!!!!!!!!!!!!!!!!!!!!
include 'detect/disks.inc'
;!!!!!!!!!!!!!!!!!!!!!!!!!!
 
  call Parser_params
 
; READ RAMDISK IMAGE FROM HD
 
;!!!!!!!!!!!!!!!!!!!!!!!
include 'boot/rdload.inc'
;!!!!!!!!!!!!!!!!!!!!!!!
;    mov    [dma_hdd],1
; CALCULATE FAT CHAIN FOR RAMDISK
 
        call  calculatefatchain
 
; LOAD VMODE DRIVER
 
;!!!!!!!!!!!!!!!!!!!!!!!
include 'vmodeld.inc'
;!!!!!!!!!!!!!!!!!!!!!!!
 
if 0
  mov ax,[OS_BASE+0x10000+bx_from_load]
  cmp ax,'r1'           ; if using not ram disk, then load librares and parameters {SPraid.simba}
  je  no_lib_load
; LOADING LIBRARES
   stdcall dll.Load,@IMPORT                 ; loading librares for kernel (.obj files)
   call load_file_parse_table               ; prepare file parse table
   call set_kernel_conf                     ; configure devices and gui
no_lib_load:
end if
 
; LOAD FONTS I and II
 
        stdcall read_file, char, FONT_I, 0, 2304
        stdcall read_file, char2, FONT_II, 0, 2560
 
        mov   esi,boot_fonts
        call  boot_log
 
; PRINT AMOUNT OF MEMORY
        mov     esi, boot_memdetect
        call    boot_log
 
        movzx   ecx, word [boot_y]
        or      ecx, (10+29*6) shl 16 ; "Determining amount of memory"
        sub     ecx, 10
        mov     edx, 0xFFFFFF
        mov     ebx, [MEM_AMOUNT]
        shr     ebx, 20
        xor     edi,edi
        mov     eax, 0x00040000
		inc		edi
        call    display_number_force
 
; BUILD SCHEDULER
 
        call   build_scheduler ; sys32.inc
 
        mov    esi,boot_devices
        call   boot_log
 
        mov  [pci_access_enabled],1
 
 
; SET PRELIMINARY WINDOW STACK AND POSITIONS
 
        mov   esi,boot_windefs
        call  boot_log
        call  setwindowdefaults
 
; SET BACKGROUND DEFAULTS
 
        mov   esi,boot_bgr
        call  boot_log
        call  init_background
        call  calculatebackground
 
; RESERVE SYSTEM IRQ'S JA PORT'S
 
        mov   esi,boot_resirqports
        call  boot_log
        call  reserve_irqs_ports
 
; SET PORTS FOR IRQ HANDLERS
 
        mov  esi,boot_setrports
        call boot_log
        ;call setirqreadports
 
; SET UP OS TASK
 
        mov  esi,boot_setostask
        call boot_log
 
        xor  eax, eax
        mov  dword [SLOT_BASE+APPDATA.fpu_state], fpu_data
        mov  dword [SLOT_BASE+APPDATA.exc_handler], eax
        mov  dword [SLOT_BASE+APPDATA.except_mask], eax
 
        ; name for OS/IDLE process
 
        mov dword [SLOT_BASE+256+APPDATA.app_name],   dword 'OS/I'
        mov dword [SLOT_BASE+256+APPDATA.app_name+4], dword 'DLE '
        mov edi, [os_stack_seg]
        mov dword [SLOT_BASE+256+APPDATA.pl0_stack], edi
        add edi, 0x2000-512
        mov dword [SLOT_BASE+256+APPDATA.fpu_state], edi
        mov dword [SLOT_BASE+256+APPDATA.saved_esp0], edi ; just for case
	; [SLOT_BASE+256+APPDATA.io_map] was set earlier
 
        mov esi, fpu_data
        mov ecx, 512/4
        cld
        rep movsd
 
        mov dword [SLOT_BASE+256+APPDATA.exc_handler], eax
        mov dword [SLOT_BASE+256+APPDATA.except_mask], eax
 
        mov ebx, SLOT_BASE+256+APP_OBJ_OFFSET
        mov  dword [SLOT_BASE+256+APPDATA.fd_obj], ebx
        mov  dword [SLOT_BASE+256+APPDATA.bk_obj], ebx
 
        mov  dword [SLOT_BASE+256+APPDATA.cur_dir], sysdir_path
        mov dword [SLOT_BASE+256+APPDATA.tls_base], eax
 
        ; task list
        mov  dword [TASK_DATA+TASKDATA.mem_start],eax	; process base address
	inc  eax
        mov  dword [CURRENT_TASK],eax
        mov  dword [TASK_COUNT],eax
        mov  [current_slot], SLOT_BASE+256
        mov  [TASK_BASE],dword TASK_DATA
        mov  byte[TASK_DATA+TASKDATA.wnd_number],al	; on screen number
        mov  dword [TASK_DATA+TASKDATA.pid], eax        ; process id number
 
 
        call init_cursors
        mov eax, [def_cursor]
        mov [SLOT_BASE+APPDATA.cursor],eax
        mov [SLOT_BASE+APPDATA.cursor+256],eax
 
  ; READ TSC / SECOND
 
        mov   esi,boot_tsc
        call  boot_log
        cli
        rdtsc ;call  _rdtsc
        mov   ecx,eax
        mov   esi,250               ; wait 1/4 a second
        call  delay_ms
        rdtsc ;call  _rdtsc
        sti
        sub   eax,ecx
        shl   eax,2
        mov   [CPU_FREQ],eax          ; save tsc / sec
;       mov ebx, 1000000
;       div ebx
; ¢®®¡é¥-â® ¯à®¨§¢®¤¨â¥«ì­®áâì ¢ ¤ ­­®¬ ª®­ªà¥â­®¬ ¬¥áâ¥
; á®¢¥àè¥­­® ­¥ªà¨â¨ç­ , ­® çâ®¡ë § âª­ãâì «î¡¨â¥«¥©
; ®¯â¨¬¨§¨àãîé¨å ª®¬¯¨«ïâ®à®¢ ...
        mov     edx, 2251799814
        mul     edx
        shr     edx, 19
        mov [stall_mcs], edx
; PRINT CPU FREQUENCY
        mov     esi, boot_cpufreq
        call    boot_log
 
        mov     ebx, edx
        movzx   ecx, word [boot_y]
        add     ecx, (10+17*6) shl 16 - 10 ; 'CPU frequency is '
        mov     edx, 0xFFFFFF
        xor     edi,edi
        mov     eax, 0x00040000
		inc		edi
        call    display_number_force
 
; SET VARIABLES
 
        call  set_variables
 
; SET MOUSE
 
        ;call   detect_devices
        stdcall load_driver, szPS2MDriver
;        stdcall load_driver, szCOM_MDriver
 
        mov   esi,boot_setmouse
        call  boot_log
        call  setmouse
 
 
; STACK AND FDC
 
        call  stack_init
        call  fdc_init
 
; PALETTE FOR 320x200 and 640x480 16 col
 
        cmp   [SCR_MODE],word 0x12
        jne   no_pal_vga
        mov   esi,boot_pal_vga
        call  boot_log
        call  paletteVGA
      no_pal_vga:
 
        cmp   [SCR_MODE],word 0x13
        jne   no_pal_ega
        mov   esi,boot_pal_ega
        call  boot_log
        call  palette320x200
      no_pal_ega:
 
; LOAD DEFAULT SKIN
 
        call    load_default_skin
 
;protect io permission map
 
           mov esi, [default_io_map]
           stdcall map_page,esi,[SLOT_BASE+256+APPDATA.io_map], PG_MAP
           add esi, 0x1000
           stdcall map_page,esi,[SLOT_BASE+256+APPDATA.io_map+4], PG_MAP
 
           stdcall map_page,tss._io_map_0,\
                   [SLOT_BASE+256+APPDATA.io_map], PG_MAP
           stdcall map_page,tss._io_map_1,\
                   [SLOT_BASE+256+APPDATA.io_map+4], PG_MAP
 
  mov ax,[OS_BASE+0x10000+bx_from_load]
  cmp ax,'r1'           ; if not rused ram disk - load network configuration from files {SPraid.simba}
  je  no_st_network
        call set_network_conf
  no_st_network:
 
; LOAD FIRST APPLICATION
        cli
 
        cmp   byte [BOOT_VAR+0x9030],1
        jne   no_load_vrr_m
 
        mov     ebp, vrr_m
        call    fs_execute_from_sysdir
 
;        cmp   eax,2                  ; if vrr_m app found (PID=2)
	sub   eax,2
        jz    first_app_found
 
no_load_vrr_m:
 
        mov     ebp, firstapp
        call    fs_execute_from_sysdir
 
;        cmp   eax,2                  ; continue if a process has been loaded
	sub   eax,2
        jz    first_app_found
 
        mov     esi, boot_failed
        call    boot_log
 
        mov   eax, 0xDEADBEEF        ; otherwise halt
        hlt
 
first_app_found:
 
        cli
 
        ;mov   [TASK_COUNT],dword 2
	push  1
        pop   dword [CURRENT_TASK]      ; set OS task fisrt
 
; SET KEYBOARD PARAMETERS
        mov   al, 0xf6         ; reset keyboard, scan enabled
        call  kb_write
 
        ; wait until 8042 is ready
        xor ecx,ecx
      @@:
        in     al,64h
        and    al,00000010b
        loopnz @b
 
       ; mov   al, 0xED       ; svetodiody - only for testing!
       ; call  kb_write
       ; call  kb_read
       ; mov   al, 111b
       ; call  kb_write
       ; call  kb_read
 
        mov   al, 0xF3       ; set repeat rate & delay
        call  kb_write
;        call  kb_read
        mov   al, 0 ; 30 250 ;00100010b ; 24 500  ;00100100b  ; 20 500
        call  kb_write
;        call  kb_read
     ;// mike.dld [
        call  set_lights
     ;// mike.dld ]
 
 
; Setup serial output console (if enabled)
 
if defined debug_com_base
 
        ; enable Divisor latch
 
        mov     dx, debug_com_base+3
        mov     al, 1 shl 7
        out     dx, al
 
        ; Set speed to 115200 baud (max speed)
 
        mov     dx, debug_com_base
        mov     al, 0x01
        out     dx, al
 
        mov     dx, debug_com_base+1
        mov     al, 0x00
        out     dx, al
 
        ; No parity, 8bits words, one stop bit, dlab bit back to 0
 
        mov     dx, debug_com_base+3
        mov     al, 3
        out     dx, al
 
        ; disable interrupts
 
        mov     dx, debug_com_base+1
        mov     al, 0
        out     dx, al
 
        ; clear +  enable fifo (64 bits)
 
        mov     dx, debug_com_base+2
        mov     al, 0x7 + 1 shl 5
        out     dx, al
 
 
end if
 
; START MULTITASKING
 
if preboot_blogesc
        mov     esi, boot_tasking
        call    boot_log
.bll1:  in      al, 0x60        ; wait for ESC key press
        cmp     al, 129
        jne     .bll1
end if
 
;       mov   [ENABLE_TASKSWITCH],byte 1        ; multitasking enabled
 
; UNMASK ALL IRQ'S
 
        mov   esi,boot_allirqs
        call  boot_log
 
        cli                          ;guarantee forbidance of interrupts.
        mov   al,0                   ; unmask all irq's
        out   0xA1,al
        out   0x21,al
 
        mov   ecx,32
 
     ready_for_irqs:
 
        mov   al,0x20                ; ready for irqs
        out   0x20,al
        out   0xa0,al
 
        loop  ready_for_irqs         ; flush the queue
 
        stdcall attach_int_handler, dword 1, irq1, dword 0
 
;        mov    [dma_hdd],1
        cmp     [IDEContrRegsBaseAddr], 0
        setnz   [dma_hdd]
        mov [timer_ticks_enable],1              ; for cd driver
 
        sti
        call change_task
 
        jmp osloop
 
;        jmp   $                      ; wait here for timer to take control
 
        ; Fly :)
 
include 'unpacker.inc'
include 'fdo.inc'
 
align 4
boot_log:
         pushad
 
        mov   ebx,10*65536
        mov   bx,word [boot_y]
        add   [boot_y],dword 10
        mov   ecx,0x80ffffff   ; ASCIIZ string with white color
		xor	  edi,edi
        mov   edx,esi
		inc	  edi
        call  dtext
 
        mov   [novesachecksum],1000
        call  checkVga_N13
 
        popad
 
        ret
 
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;                                                                    ;
;                    MAIN OS LOOP START                              ;
;                                                                    ;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
align 32
osloop:
        call   [draw_pointer]
        call   checkbuttons
        call   checkwindows
;       call   check_window_move_request
        call   checkmisc
        call   checkVga_N13
        call   stack_handler
        call   checkidle
        call   check_fdd_motor_status
        call   check_ATAPI_device_event
        jmp    osloop
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;                                                                    ;
;                      MAIN OS LOOP END                              ;
;                                                                    ;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
align 4
checkidle:
        pushad
        call    change_task
        jmp     idle_loop_entry
  idle_loop:
        cmp     eax,[idlemem]     ; eax == [timer_ticks]
        jne     idle_exit
        rdtsc   ;call _rdtsc
        mov     ecx,eax
        hlt
        rdtsc   ;call _rdtsc
        sub     eax,ecx
        add     [idleuse],eax
  idle_loop_entry:
        mov     eax,[timer_ticks] ; eax =  [timer_ticks]
        cmp     [check_idle_semaphore],0
        je      idle_loop
        dec     [check_idle_semaphore]
  idle_exit:
        mov     [idlemem],eax     ; eax == [timer_ticks]
        popad
        ret
 
uglobal
  idlemem               dd   0x0
  idleuse               dd   0x0
  idleusesec            dd   0x0
  check_idle_semaphore  dd   0x0
endg
 
 
 
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;                                                                      ;
;                   INCLUDED SYSTEM FILES                              ;
;                                                                      ;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 
 
include "kernel32.inc"
 
 
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;                                                                      ;
;                       KERNEL FUNCTIONS                               ;
;                                                                      ;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 
reserve_irqs_ports:
 
        push eax
        xor	eax,eax
		inc	eax
        mov  byte [irq_owner+4*0],al		;1    ; timer
        ;mov  [irq_owner+4*1], 1    ; keyboard
        mov  byte [irq_owner+4*6],al		;1    ; floppy diskette
        mov  byte [irq_owner+4*13],al	;1   ; math co-pros
        mov  byte [irq_owner+4*14],al	;1   ; ide I
        mov  byte [irq_owner+4*15],al	;1   ; ide II
        pop  eax
 
; RESERVE PORTS
	push  4
        pop   dword [RESERVED_PORTS]	;,edi
 
	push  1
        pop   dword [RESERVED_PORTS+16+0]	;,dword 1
        and   dword [RESERVED_PORTS+16+4],0	;,dword 0x0
        mov   dword [RESERVED_PORTS+16+8],0x2d	;,dword 0x2d
 
	push  1
        pop   dword [RESERVED_PORTS+32+0]	;,dword 1
        push  0x30
        pop   dword [RESERVED_PORTS+32+4]	;,dword 0x30
	push  0x4d
        pop   dword [RESERVED_PORTS+32+8]	;,dword 0x4d
 
	push  1
        pop   dword [RESERVED_PORTS+48+0]	;,dword 1
	push  0x50
        pop   dword [RESERVED_PORTS+48+4]	;,dword 0x50
        mov   dword [RESERVED_PORTS+48+8],0xdf	;,dword 0xdf
 
	push  1
        pop   dword [RESERVED_PORTS+64+0]	;,dword 1
 
        mov   dword [RESERVED_PORTS+64+4],0xe5	;,dword 0xe5
        mov   dword [RESERVED_PORTS+64+8],0xff	;,dword 0xff
 
        ret
 
setirqreadports:
 
        mov   [irq12read+0],dword 0x60 + 0x01000000  ; read port 0x60 , byte
	    and   dword [irq12read+4],0                   ; end of port list
;        mov   [irq12read+4],dword 0                  ; end of port list
        ;mov   [irq04read+0],dword 0x3f8 + 0x01000000 ; read port 0x3f8 , byte
        ;mov   [irq04read+4],dword 0                  ; end of port list
        ;mov   [irq03read+0],dword 0x2f8 + 0x01000000 ; read port 0x2f8 , byte
        ;mov   [irq03read+4],dword 0                  ; end of port list
 
        ret
 
iglobal
  process_number dd 0x1
endg
 
set_variables:
 
        mov   ecx,0x100                       ; flush port 0x60
.fl60:  in    al,0x60
        loop  .fl60
        push  eax
 
        mov   ax,[BOOT_VAR+0x900c]
        shr   ax,1
        shl   eax,16
        mov   ax,[BOOT_VAR+0x900A]
        shr   ax,1
        mov   [MOUSE_X],eax
 
        xor   eax,eax
        mov   [BTN_ADDR],dword BUTTON_INFO    ; address of button list
 
        mov   byte [MOUSE_BUFF_COUNT],al                 ; mouse buffer
        mov   byte [KEY_COUNT],al                 ; keyboard buffer
        mov   byte [BTN_COUNT],al                 ; button buffer
;        mov   [MOUSE_X],dword 100*65536+100    ; mouse x/y
 
     ;!! IP 04.02.2005:
        mov   byte [DONT_SWITCH],al ; change task if possible
        pop   eax
        ret
 
align 4
;input  eax=43,bl-byte of output, ecx - number of port
sys_outport:
 
    mov   edi,ecx          ; separate flag for read / write
    and   ecx,65535
 
    mov   eax,[RESERVED_PORTS]
    test  eax,eax
    jnz   .sopl8
    inc	  eax
	mov   [esp+32],eax
    ret
 
  .sopl8:
    mov   edx,[TASK_BASE]
    mov   edx,[edx+0x4]
    ;and   ecx,65535
    ;cld - set on interrupt 0x40
  .sopl1:
 
    mov   esi,eax
    shl   esi,4
    add   esi,RESERVED_PORTS
    cmp   edx,[esi+0]
    jne   .sopl2
    cmp   ecx,[esi+4]
    jb    .sopl2
    cmp   ecx,[esi+8]
    jg    .sopl2
.sopl3:
 
    test  edi,0x80000000 ; read ?
    jnz   .sopl4
 
	mov	  eax,ebx
    mov   dx,cx          ; write
    out   dx,al
    and   [esp+32],dword 0
    ret
 
	.sopl2:
 
    dec   eax
    jnz   .sopl1
	inc	  eax
    mov   [esp+32],eax
    ret
 
  
  .sopl4:
 
    mov   dx,cx          ; read
    in    al,dx
    and   eax,0xff
    and   [esp+32],dword 0
    mov   [esp+20],eax
    ret
 
display_number:
 
; eax = print type, al=0 -> ebx is number
;                   al=1 -> ebx is pointer
;                   ah=0 -> display decimal
;                   ah=1 -> display hexadecimal
;                   ah=2 -> display binary
;                   eax bits 16-21 = number of digits to display (0-32)
;                   eax bits 22-31 = reserved
;
; ebx = number or pointer
; ecx = x shl 16 + y
; edx = color
    xor     edi, edi
display_number_force:
    push  eax
    and   eax,0x3fffffff
    cmp   eax,0xffff            ; length > 0 ?
    pop   eax
    jge   cont_displ
    ret
   cont_displ:
     push  eax
     and   eax,0x3fffffff
     cmp   eax,61*0x10000        ; length <= 60 ?
     pop   eax
     jb    cont_displ2
     ret
   cont_displ2:
 
     pushad
 
     cmp   al,1                  ; ecx is a pointer ?
     jne   displnl1
     mov   ebp,ebx
     add   ebp,4
     mov   ebp,[ebp+std_application_base_address]
     mov   ebx,[ebx+std_application_base_address]
 displnl1:
     sub   esp,64
 
    test   ah,ah                  ; DECIMAL
    jnz   no_display_desnum
    shr   eax,16
    and   eax,0xC03f
;     and   eax,0x3f
    push  eax
    and   eax,0x3f
    mov   edi,esp
    add   edi,4+64-1
    mov   ecx,eax
    mov   eax,ebx
    mov   ebx,10
 d_desnum:
     xor   edx,edx
     call  division_64_bits
     div   ebx
     add   dl,48
     mov   [edi],dl
     dec   edi
     loop  d_desnum
     pop   eax
     call  normalize_number
     call  draw_num_text
     add   esp,64
     popad
     ret
   no_display_desnum:
 
     cmp   ah,0x01               ; HEXADECIMAL
     jne   no_display_hexnum
     shr   eax,16
     and   eax,0xC03f
;     and   eax,0x3f
     push  eax
     and   eax,0x3f
     mov   edi,esp
     add   edi,4+64-1
     mov   ecx,eax
     mov   eax,ebx
     mov   ebx,16
   d_hexnum:
     xor   edx,edx
     call  division_64_bits
     div   ebx
   hexletters = __fdo_hexdigits
     add   edx,hexletters
     mov   dl,[edx]
     mov   [edi],dl
     dec   edi
     loop  d_hexnum
     pop   eax
     call  normalize_number
     call  draw_num_text
     add   esp,64
     popad
     ret
   no_display_hexnum:
 
     cmp   ah,0x02               ; BINARY
     jne   no_display_binnum
     shr   eax,16
     and   eax,0xC03f
;     and   eax,0x3f
     push  eax
     and   eax,0x3f
     mov   edi,esp
     add   edi,4+64-1
     mov   ecx,eax
     mov   eax,ebx
     mov   ebx,2
   d_binnum:
     xor   edx,edx
     call  division_64_bits
     div   ebx
     add   dl,48
     mov   [edi],dl
     dec   edi
     loop  d_binnum
     pop   eax
     call  normalize_number
     call  draw_num_text
     add   esp,64
     popad
     ret
   no_display_binnum:
 
     add   esp,64
     popad
     ret
 
normalize_number:
     test  ah,0x80
     jz   .continue
     mov  ecx,48
     and   eax,0x3f
@@:
     inc   edi
     cmp   [edi],cl
     jne   .continue
     dec   eax
     cmp   eax,1
     ja    @r
     mov   al,1
.continue:
     and   eax,0x3f
     ret
 
division_64_bits:
     test  [esp+1+4],byte 0x40
     jz   .continue
     push  eax
     mov   eax,ebp
     div   ebx
     mov   ebp,eax
     pop   eax
.continue:
     ret
 
draw_num_text:
     mov   esi,eax
     mov   edx,64+4
     sub   edx,eax
     add   edx,esp
     mov   ebx,[esp+64+32-8+4]
; add window start x & y
     mov   ecx,[TASK_BASE]
 
     mov   edi,[CURRENT_TASK]
     shl   edi,8
 
     mov   eax,[ecx-twdw+WDATA.box.left]
     add   eax,[edi+SLOT_BASE+APPDATA.wnd_clientbox.left]
     shl   eax,16
     add   eax,[ecx-twdw+WDATA.box.top]
     add   eax,[edi+SLOT_BASE+APPDATA.wnd_clientbox.top]
     add   ebx,eax
     mov   ecx,[esp+64+32-12+4]
        and     ecx, not 0x80000000     ; force counted string
        mov     eax, [esp+64+8]         ; background color (if given)
        mov     edi, [esp+64+4]
     jmp   dtext
 
align 4
 
sys_setup:
 
; 1=roland mpu midi base , base io address
; 2=keyboard   1, base kaybap 2, shift keymap, 9 country 1eng 2fi 3ger 4rus
; 3=cd base    1, pri.master 2, pri slave 3 sec master, 4 sec slave
; 5=system language, 1eng 2fi 3ger 4rus
; 7=hd base    1, pri.master 2, pri slave 3 sec master, 4 sec slave
; 8=fat32 partition in hd
; 9
; 10 = sound dma channel
; 11 = enable lba read
; 12 = enable pci access
 
 
     	and  [esp+32],dword 0
	dec	ebx				; MIDI
	jnz  nsyse1
	cmp  ecx,0x100
 
	jb   nsyse1
	mov	esi,65535
	cmp	esi,ecx
 
	jb   nsyse1
	mov  [midi_base],cx	;bx
	mov  word [mididp],cx	;bx
	inc  cx		    	;bx
	mov  word [midisp],cx	;bx
	ret
 
iglobal
midi_base dw 0
endg
 
   nsyse1:
	dec	ebx				 ; KEYBOARD
	jnz  nsyse2
	mov  edi,[TASK_BASE]
	mov  eax,[edi+TASKDATA.mem_start]
	add  eax,edx
 
	dec	ecx
	jnz  kbnobase
	mov  ebx,keymap
	mov  ecx,128
	call memmove
	ret
   kbnobase:
	dec  ecx
	jnz  kbnoshift
 
	mov  ebx,keymap_shift
	mov  ecx,128
	call memmove
	ret
   kbnoshift:
	dec  ecx
	jnz  kbnoalt
	mov  ebx,keymap_alt
	mov  ecx,128
	call memmove
	ret
   kbnoalt:
	sub  ecx,6
	jnz  kbnocountry
	mov  word [keyboard],dx
	ret
   kbnocountry:
	mov  [esp+32],dword 1
	ret
   nsyse2:
	dec  ebx			    ; CD
	jnz  nsyse4
 
	test ecx,ecx
	jz   nosesl
 
	cmp  ecx, 4
	ja   nosesl
	mov  [cd_base],cl
 
	dec	ecx
	jnz  noprma
	mov  [cdbase],0x1f0
	mov  [cdid],0xa0
   noprma:
 
	dec	ecx
	jnz  noprsl
	mov  [cdbase],0x1f0
	mov  [cdid],0xb0
   noprsl:
	dec	ecx
     	jnz  nosema
     	mov  [cdbase],0x170
     	mov  [cdid],0xa0
   nosema:
	dec	ecx
     	jnz  nosesl
     	mov  [cdbase],0x170
     	mov  [cdid],0xb0
   nosesl:
     	ret
 
iglobal
cd_base db 0
 
endg
   nsyse4:
                 
     	sub  ebx,2		 ; SYSTEM LANGUAGE
     	jnz  nsyse5
     	mov  [syslang],ecx
     	ret
   nsyse5:
         
     	sub  ebx,2		; HD BASE
     	jnz  nsyse7
 
     	test ecx,ecx
     	jz   nosethd
 
     	cmp  ecx,4
     	ja   nosethd
     	mov  [hd_base],cl
 
     	cmp  ecx,1
     	jnz  noprmahd
     	mov  [hdbase],0x1f0
     	and  dword [hdid],0x0
     	mov  dword [hdpos],ecx
;     call set_FAT32_variables
   noprmahd:
 
     	cmp  ecx,2
     	jnz  noprslhd
     	mov  [hdbase],0x1f0
     	mov  [hdid],0x10
     	mov  dword [hdpos],ecx
;     call set_FAT32_variables
   noprslhd:
 
     	cmp  ecx,3
     	jnz  nosemahd
     	mov  [hdbase],0x170
     	and  dword [hdid],0x0
     	mov  dword [hdpos],ecx
;     call set_FAT32_variables
   nosemahd:
 
     	cmp  ecx,4
     	jnz  noseslhd
     	mov  [hdbase],0x170
     	mov  [hdid],0x10
     	mov  dword [hdpos],ecx
;     call set_FAT32_variables
   noseslhd:
    	call  reserve_hd1
    	call  reserve_hd_channel
    	call  free_hd_channel
    	and   dword [hd1_status],0        ; free
   nosethd:
     	ret
 
iglobal
hd_base db 0
endg
 
nsyse7:
 
;     cmp  eax,8                      ; HD PARTITION
     	dec  ebx
     	jnz  nsyse8
     	mov  [fat32part],ecx
;     call set_FAT32_variables
    	call  reserve_hd1
    	call  reserve_hd_channel
    	call  free_hd_channel
;     	pusha
     	call  choice_necessity_partition_1
;     	popa
    	and dword [hd1_status],0        ; free
     	ret
 
nsyse8:
;     cmp  eax,11                     ; ENABLE LBA READ
    	and  ecx,1
	sub  ebx,3
    	jnz  no_set_lba_read
    	mov  [lba_read_enabled],ecx
    	ret
 
no_set_lba_read:
;     cmp  eax,12                     ; ENABLE PCI ACCESS
    	dec  ebx
    	jnz  no_set_pci_access
    	mov  [pci_access_enabled],ecx
    	ret
no_set_pci_access:
 
;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
include 'vmodeint.inc'
;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
 
sys_setup_err:
     	or  [esp+32],dword -1
     	ret
 
align 4
 
sys_getsetup:
 
; 1=roland mpu midi base , base io address
; 2=keyboard   1, base kaybap 2, shift keymap, 9 country 1eng 2fi 3ger 4rus
; 3=cd base    1, pri.master 2, pri slave 3 sec master, 4 sec slave
; 5=system language, 1eng 2fi 3ger 4rus
; 7=hd base    1, pri.master 2, pri slave 3 sec master, 4 sec slave
; 8=fat32 partition in hd
; 9=get hs timer tic
 
;     cmp  eax,1
	dec	ebx
     	jnz  ngsyse1
     	movzx eax,[midi_base]
     	mov  [esp+32],eax
     	ret
ngsyse1:
;     cmp  eax,2
	dec	ebx
     	jnz  ngsyse2
 
     	mov  edi,[TASK_BASE]
     	mov  ebx,[edi+TASKDATA.mem_start]
     	add  ebx,edx
 
;     cmp  ebx,1
	dec	ecx
     	jnz  kbnobaseret
     	mov  eax,keymap
     	mov  ecx,128
     	call memmove
     	ret
kbnobaseret:
;     cmp  ebx,2
	dec	ecx
     	jnz  kbnoshiftret
 
     	mov  eax,keymap_shift
     	mov  ecx,128
     	call memmove
     	ret
kbnoshiftret:
;     cmp  ebx,3
	dec	ecx
     	jne  kbnoaltret
 
     	mov  eax,keymap_alt
     	mov  ecx,128
     	call memmove
     	ret
kbnoaltret:
;     cmp  ebx,9
	sub	ecx,6
     	jnz  ngsyse2
     	movzx eax,word [keyboard]
     	mov  [esp+32],eax
     	ret
 
 
ngsyse2:
;         cmp  eax,3
	dec	ebx
        jnz  ngsyse3
        movzx eax,[cd_base]
        mov  [esp+32],eax
        ret
ngsyse3:
;         cmp  eax,5
	sub	ebx,2
        jnz  ngsyse5
        mov  eax,[syslang]
        mov  [esp+32],eax
        ret
ngsyse5:
;     cmp  eax,7
	sub	ebx,2
     	jnz  ngsyse7
     	movzx eax,[hd_base]
     	mov  [esp+32],eax
     	ret
ngsyse7:
;     cmp  eax,8
	dec	ebx
     	jnz  ngsyse8
     	mov eax,[fat32part]
     	mov  [esp+32],eax
     	ret
ngsyse8:
;     cmp  eax,9
	dec	ebx
     	jnz  ngsyse9
     	mov  eax,[timer_ticks] ;[0xfdf0]
     	mov  [esp+32],eax
     	ret
ngsyse9:
;     cmp  eax,11
	sub	ebx,2
     	jnz  ngsyse11
     	mov eax,[lba_read_enabled]
     	mov  [esp+32],eax
     	ret
ngsyse11:
;     cmp  eax,12
	dec	ebx
     	jnz  ngsyse12
     	mov eax,[pci_access_enabled]
     	mov  [esp+32],eax
     	ret
ngsyse12:
     	mov  [esp+32],dword 1
     	ret
 
	
get_timer_ticks:
    	mov eax,[timer_ticks]
    	ret
 
iglobal
align 4
mousefn dd msscreen, mswin, msbutton, msset
        dd app_load_cursor
        dd app_set_cursor
        dd app_delete_cursor
        dd msz
endg
 
readmousepos:
 
; eax=0 screen relative
; eax=1 window relative
; eax=2 buttons pressed
; eax=3 set mouse pos   ; reserved
; eax=4 load cursor
; eax=5 set cursor
; eax=6 delete cursor   ; reserved
; eax=7 get mouse_z
 
           cmp ebx, 7
           ja msset
           jmp [mousefn+ebx*4]
msscreen:
           mov  eax,[MOUSE_X]
           shl  eax,16
           mov  ax,[MOUSE_Y]
           mov  [esp+36-4],eax
           ret
mswin:
           mov  eax,[MOUSE_X]
           shl  eax,16
           mov  ax,[MOUSE_Y]
           mov  esi,[TASK_BASE]
           mov  bx, word [esi-twdw+WDATA.box.left]
           shl  ebx,16
           mov  bx, word [esi-twdw+WDATA.box.top]
           sub  eax,ebx
 
           mov  edi,[CURRENT_TASK]
           shl  edi,8
           sub  ax,word[edi+SLOT_BASE+APPDATA.wnd_clientbox.top]
           rol  eax,16
           sub  ax,word[edi+SLOT_BASE+APPDATA.wnd_clientbox.left]
           rol  eax,16
           mov  [esp+36-4],eax
           ret
msbutton:
           movzx eax,byte [BTN_DOWN]
           mov  [esp+36-4],eax
           ret
msz:
           mov   edi, [TASK_COUNT]
           movzx edi, word [WIN_POS + edi*2]
           cmp   edi, [CURRENT_TASK]
           jne   @f
           mov   ax,[MOUSE_SCROLL_H]
           shl   eax,16
           mov   ax,[MOUSE_SCROLL_V]
           mov   [esp+36-4],eax
           and   [MOUSE_SCROLL_H],word 0
           and   [MOUSE_SCROLL_V],word 0
           ret
       @@:
           and  [esp+36-4],dword 0
;           ret
msset:
           ret
 
app_load_cursor:
           cmp ecx, OS_BASE
           jae msset
           stdcall load_cursor, ecx, edx
           mov [esp+36-4], eax
           ret
 
app_set_cursor:
           stdcall set_cursor, ecx
           mov [esp+36-4], eax
           ret
 
app_delete_cursor:
           stdcall delete_cursor, ecx
           mov [esp+36-4], eax
           ret
 
is_input:
 
   push edx
   mov  dx,word [midisp]
   in   al,dx
   and  al,0x80
   pop  edx
   ret
 
is_output:
 
   push edx
   mov  dx,word [midisp]
   in   al,dx
   and  al,0x40
   pop  edx
   ret
 
 
get_mpu_in:
 
   push edx
   mov  dx,word [mididp]
   in   al,dx
   pop  edx
   ret
 
 
put_mpu_out:
 
   push edx
   mov  dx,word [mididp]
   out  dx,al
   pop  edx
   ret
 
 
 
align 4
 
sys_midi:
	cmp  [mididp],0
	jnz  sm0
	mov  [esp+36],dword 1
	ret
sm0:
	and  [esp+36],dword 0
	dec  ebx
	jnz  smn1
 ;    call setuart
su1:
	call is_output
	test al,al
	jnz  su1
	mov  dx,word [midisp]
	mov  al,0xff
	out  dx,al
su2:
	mov  dx,word [midisp]
	mov  al,0xff
	out  dx,al
	call is_input
	test al,al
	jnz  su2
	call get_mpu_in
	cmp  al,0xfe
	jnz  su2
su3:
	call is_output
	test  al,al
	jnz  su3
	mov  dx,word [midisp]
	mov  al,0x3f
	out  dx,al
	ret
smn1:
	dec  ebx
	jnz  smn2
sm10:
	call get_mpu_in
	call is_output
	test al,al
	jnz  sm10
	mov  al,bl
	call put_mpu_out
	smn2:
	ret
 
detect_devices:
;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
;include 'detect/commouse.inc'
;include 'detect/ps2mouse.inc'
;include 'detect/dev_fd.inc'
;include 'detect/dev_hdcd.inc'
;include 'detect/sear_par.inc'
;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
    ret
 
sys_end:
 
     mov ecx, [current_slot]
     mov eax, [ecx+APPDATA.tls_base]
     test eax, eax
     jz @F
 
     stdcall user_free, eax
@@:
 
     mov   eax,[TASK_BASE]
     mov   [eax+TASKDATA.state], 3  ; terminate this program
 
    waitterm:            ; wait here for termination
     mov   ebx,100
     call  delay_hs
     jmp   waitterm
 
iglobal
align 4
sys_system_table:
        dd      exit_for_anyone         ; 1 = obsolete
        dd      sysfn_terminate         ; 2 = terminate thread
        dd      sysfn_activate          ; 3 = activate window
        dd      sysfn_getidletime       ; 4 = get idle time
        dd      sysfn_getcpuclock       ; 5 = get cpu clock
        dd      sysfn_saveramdisk       ; 6 = save ramdisk
        dd      sysfn_getactive         ; 7 = get active window
        dd      sysfn_sound_flag        ; 8 = get/set sound_flag
        dd      sysfn_shutdown          ; 9 = shutdown with parameter
        dd      sysfn_minimize          ; 10 = minimize window
        dd      sysfn_getdiskinfo       ; 11 = get disk subsystem info
        dd      sysfn_lastkey           ; 12 = get last pressed key
        dd      sysfn_getversion        ; 13 = get kernel version
        dd      sysfn_waitretrace       ; 14 = wait retrace
        dd      sysfn_centermouse       ; 15 = center mouse cursor
        dd      sysfn_getfreemem        ; 16 = get free memory size
        dd      sysfn_getallmem         ; 17 = get total memory size
        dd      sysfn_terminate2        ; 18 = terminate thread using PID
                                        ;                 instead of slot
        dd      sysfn_mouse_acceleration; 19 = set/get mouse acceleration
        dd      sysfn_meminfo           ; 20 = get extended memory info
        dd      sysfn_pid_to_slot       ; 21 = get slot number for pid
        dd      sysfn_min_rest_window   ; 22 = minimize and restore any window
sysfn_num = ($ - sys_system_table)/4
endg
 
sys_system:
        dec     ebx
        cmp     ebx, sysfn_num
        jae     @f
        jmp     dword [sys_system_table + ebx*4]
@@:
        ret
 
 
sysfn_shutdown:          ; 18.9 = system shutdown
     cmp  ecx,1
     jl   exit_for_anyone
     cmp  ecx,4
     jg   exit_for_anyone
     mov  [BOOT_VAR+0x9030],cl
 
     mov  eax,[TASK_COUNT]
     mov  [SYS_SHUTDOWN],al
     mov  [shutdown_processes],eax
     and  dword [esp+32], 0
 exit_for_anyone:
     ret
  uglobal
   shutdown_processes: dd 0x0
  endg
 
sysfn_terminate:        ; 18.2 = TERMINATE
     cmp  ecx,2
     jb   noprocessterminate
     mov  edx,[TASK_COUNT]
     cmp  ecx,edx
     ja   noprocessterminate
     mov  eax,[TASK_COUNT]
     shl  ecx,5
     mov  edx,[ecx+CURRENT_TASK+TASKDATA.pid]
     add  ecx,CURRENT_TASK+TASKDATA.state
     cmp  byte [ecx], 9
     jz   noprocessterminate
 
     ;call MEM_Heap_Lock      ;guarantee that process isn't working with heap
     mov  [ecx],byte 3       ; clear possible i40's
     ;call MEM_Heap_UnLock
 
     cmp  edx,[application_table_status]    ; clear app table stat
     jne  noatsc
     mov  [application_table_status],0
   noatsc:
   noprocessterminate:
     ret
 
sysfn_terminate2:
;lock application_table_status mutex
.table_status:
    cli
    cmp    [application_table_status],0
    je     .stf
    sti
    call   change_task
    jmp    .table_status
.stf:
    call   set_application_table_status
    mov    eax,ecx
    call   pid_to_slot
    test   eax,eax
    jz     .not_found
    mov    ecx,eax
    cli
    call   sysfn_terminate
    mov    [application_table_status],0
    sti
    and    dword [esp+32],0
    ret
.not_found:
    mov    [application_table_status],0
    or     dword [esp+32],-1
    ret
 
sysfn_activate:         ; 18.3 = ACTIVATE WINDOW
     cmp  ecx,2
     jb   .nowindowactivate
     cmp  ecx,[TASK_COUNT]
     ja   .nowindowactivate
 
     mov   [window_minimize], 2   ; restore window if minimized
 
     movzx esi, word [WIN_STACK + ecx*2]
     cmp   esi, [TASK_COUNT]
     je    .nowindowactivate ; already active
 
     mov   edi, ecx
     shl   edi, 5
     add   edi, window_data
     movzx esi, word [WIN_STACK + ecx * 2]
     lea   esi, [WIN_POS + esi * 2]
     call  waredraw
.nowindowactivate:
     ret
 
sysfn_getidletime:              ; 18.4 = GET IDLETIME
     mov  eax,[idleusesec]
     mov  [esp+32], eax
     ret
 
sysfn_getcpuclock:              ; 18.5 = GET TSC/SEC
     mov  eax,[CPU_FREQ]
     mov  [esp+32], eax
     ret
 
;  SAVE ramdisk to /hd/1/menuet.img
;!!!!!!!!!!!!!!!!!!!!!!!!
   include 'blkdev/rdsave.inc'
;!!!!!!!!!!!!!!!!!!!!!!!!
align 4
sysfn_getactive:        ; 18.7 = get active window
     mov  eax, [TASK_COUNT]
   movzx  eax, word [WIN_POS + eax*2]
     mov  [esp+32],eax
     ret
 
sysfn_sound_flag:       ; 18.8 = get/set sound_flag
;     cmp  ecx,1
     dec  ecx
     jnz  nogetsoundflag
     movzx  eax,byte [sound_flag] ; get sound_flag
     mov  [esp+32],eax
     ret
 nogetsoundflag:
;     cmp  ecx,2
     dec  ecx
     jnz  nosoundflag
     xor  byte [sound_flag], 1
 nosoundflag:
     ret
 
sysfn_minimize:         ; 18.10 = minimize window
     mov   [window_minimize],1
     ret
align 4
sysfn_getdiskinfo:      ; 18.11 = get disk info table
;     cmp  ecx,1
     dec  ecx
     jnz  full_table
  small_table:
     call for_all_tables
     mov ecx,10
     cld
     rep movsb
     ret
   for_all_tables:
     mov edi,edx
     mov esi,DRIVE_DATA
     ret
  full_table:
;     cmp  ecx,2
     dec  ecx
     jnz  exit_for_anyone
     call for_all_tables
     mov ecx,16384
     cld
     rep movsd
     ret
 
sysfn_lastkey:          ; 18.12 = return 0 (backward compatibility)
        and     dword [esp+32], 0
        ret
 
sysfn_getversion:       ; 18.13 = get kernel ID and version
     mov edi,ebx
     mov esi,version_inf
     mov ecx,version_end-version_inf
     rep movsb
     ret
 
sysfn_waitretrace:     ; 18.14 = sys wait retrace
     ;wait retrace functions
 sys_wait_retrace:
     mov edx,0x3da
 WaitRetrace_loop:
     in al,dx
     test al,1000b
     jz WaitRetrace_loop
     and [esp+32],dword 0
     ret
 
align 4
sysfn_centermouse:      ; 18.15 = mouse centered
; removed here by 
;     call  mouse_centered
;* mouse centered - start code- Mario79
;mouse_centered:
;        push  eax
        mov   eax,[Screen_Max_X]
        shr   eax,1
        mov   [MOUSE_X],ax
        mov   eax,[Screen_Max_Y]
        shr   eax,1
        mov   [MOUSE_Y],ax
;        ret
;* mouse centered - end code- Mario79
	xor   eax,eax
        and   [esp+32],eax
;        pop   eax
 
     ret
align 4
sysfn_mouse_acceleration: ; 18.19 = set/get mouse features
     test ecx,ecx  ; get mouse speed factor
     jnz  .set_mouse_acceleration
     xor  eax,eax
     mov  ax,[mouse_speed_factor]
     mov  [esp+32],eax
     ret
 .set_mouse_acceleration:
;     cmp  ecx,1  ; set mouse speed factor
     dec  ecx
     jnz  .get_mouse_delay
     mov  [mouse_speed_factor],dx
     ret
 .get_mouse_delay:
;     cmp  ecx,2  ; get mouse delay
     dec  ecx
     jnz  .set_mouse_delay
     mov  eax,[mouse_delay]
     mov  [esp+32],eax
     ret
 .set_mouse_delay:
;     cmp  ecx,3  ; set mouse delay
     dec  ecx
     jnz  .set_pointer_position
     mov  [mouse_delay],edx
     ret
 .set_pointer_position:
;     cmp  ecx,4  ; set mouse pointer position
     dec   ecx
     jnz  .set_mouse_button
     mov   [MOUSE_Y],dx    ;y
     ror   edx,16
     mov   [MOUSE_X],dx    ;x
     rol   edx,16
     ret
 .set_mouse_button:
;     cmp   ecx,5  ; set mouse button features
     dec   ecx
     jnz  .end
     mov   [BTN_DOWN],dl
     mov   [mouse_active],1
 .end:
     ret
 
sysfn_getfreemem:
     mov eax, [pg_data.pages_free]
     shl eax, 2
     mov [esp+32],eax
     ret
 
sysfn_getallmem:
     mov  eax,[MEM_AMOUNT]
     shr eax, 10
     mov  [esp+32],eax
     ret
 
; // Alver, 2007-22-08 // {
sysfn_pid_to_slot:
     mov   eax, ecx
     call  pid_to_slot
     mov   [esp+32], eax
     ret
 
sysfn_min_rest_window:
     pushad
     mov   eax, edx      ; ebx - operating
     shr   ecx, 1
     jnc    @f
     call  pid_to_slot
@@:
     or    eax, eax      ; eax - number of slot
     jz    .error
     cmp   eax, 255         ; varify maximal slot number
     ja    .error
     movzx eax, word [WIN_STACK + eax*2]
     shr   ecx, 1
     jc    .restore
 ; .minimize:
     call  minimize_window
     jmp   .exit
.restore:
     call  restore_minimized_window
.exit:
     popad
     xor   eax, eax
     mov   [esp+32], eax
     ret
.error:
     popad
     xor   eax, eax
     dec   eax
     mov   [esp+32], eax
     ret
; } \\ Alver, 2007-22-08 \\
 
uglobal
;// mike.dld, 2006-29-01 [
screen_workarea RECT
;// mike.dld, 2006-29-01 ]
window_minimize db 0
sound_flag      db 0
endg
 
iglobal
version_inf:
  db 0,7,5,0  ; version 0.7.5.0
  db UID_KOLIBRI
  dd __REV__
version_end:
endg
 
UID_NONE=0
UID_MENUETOS=1   ;official
UID_KOLIBRI=2    ;russian
 
sys_cachetodiskette:
        cmp     ebx, 1
        jne     .no_floppy_a_save
        mov     [flp_number], 1
        jmp     .save_image_on_floppy
.no_floppy_a_save:
        cmp     ebx, 2
        jne     .no_floppy_b_save
        mov     [flp_number], 2
.save_image_on_floppy:
        call    save_image
        mov     [esp + 32], dword 0
        cmp     [FDC_Status], 0
        je      .yes_floppy_save
.no_floppy_b_save:
        mov     [esp + 32], dword 1
.yes_floppy_save:
        ret
 
uglobal
;  bgrchanged  dd  0x0
align 4
bgrlockpid dd 0
bgrlock db 0
endg
 
sys_background:
 
    cmp   ebx,1                            ; BACKGROUND SIZE
    jnz   nosb1
    test  ecx,ecx
;    cmp   ecx,0
    jz    sbgrr
    test  edx,edx
;    cmp   edx,0
    jz    sbgrr
@@:
;;Maxis use atomic bts for mutexes  4.4.2009
        bts     dword [bgrlock], 0
        jnc     @f
        call    change_task
        jmp     @b
@@:
    mov   [BgrDataWidth],ecx
    mov   [BgrDataHeight],edx
;    mov   [bgrchanged],1
 
    pushad
; return memory for old background
        mov     eax, [img_background]
        cmp     eax, static_background_data
        jz      @f
        stdcall kernel_free, eax
@@:
; calculate RAW size
    xor  eax,eax
    inc  eax
    cmp  [BgrDataWidth],eax
    jae   @f
    mov [BgrDataWidth],eax
@@:
    cmp  [BgrDataHeight],eax
    jae   @f
    mov [BgrDataHeight],eax
@@:
    mov  eax,[BgrDataWidth]
    imul eax,[BgrDataHeight]
    lea  eax,[eax*3]
    mov  [mem_BACKGROUND],eax
; get memory for new background
    stdcall kernel_alloc, eax
    test eax, eax
    jz .memfailed
    mov [img_background], eax
    jmp .exit
.memfailed:
; revert to static monotone data
        mov     [img_background], static_background_data
        xor     eax, eax
        inc     eax
        mov     [BgrDataWidth], eax
        mov     [BgrDataHeight], eax
        mov     [mem_BACKGROUND], 4
.exit:
    popad
        mov     [bgrlock], 0
 
  sbgrr:
    ret
 
nosb1:
 
    cmp   ebx,2                            ; SET PIXEL
    jnz   nosb2
 
    mov   eax, [img_background]
    test  ecx, ecx
    jz    @f
    cmp   eax, static_background_data
    jz    .ret
@@:
    mov ebx, [mem_BACKGROUND]
    add ebx, 4095
    and ebx, -4096
    sub ebx, 4
    cmp   ecx, ebx
    ja   .ret
 
    mov   ebx,[eax+ecx]
    and   ebx,0xFF000000 ;255*256*256*256
    and   edx,0x00FFFFFF ;255*256*256+255*256+255
    add   edx,ebx
    mov   [eax+ecx],edx
.ret:
    ret
nosb2:
 
    cmp   ebx,3                            ; DRAW BACKGROUND
    jnz   nosb3
draw_background_temp:
;    cmp   [bgrchanged],1 ;0
;    je    nosb31
;draw_background_temp:
;    mov   [bgrchanged],1 ;0
    mov    [background_defined], 1
    call  force_redraw_background
    mov    [REDRAW_BACKGROUND], byte 2
   nosb31:
    ret
  nosb3:
 
    cmp   ebx,4                            ; TILED / STRETCHED
    jnz   nosb4
    cmp   ecx,[BgrDrawMode]
    je    nosb41
    mov   [BgrDrawMode],ecx
;    mov   [bgrchanged],1
   nosb41:
    ret
  nosb4:
 
    cmp   ebx,5                            ; BLOCK MOVE TO BGR
    jnz   nosb5
    cmp   [img_background], static_background_data
    jnz   @f
    test  edx, edx
    jnz   .fin
    cmp   esi, 4
    ja    .fin
  @@:
  ; bughere
    mov   eax, ecx
    mov   ebx, edx
    add   ebx, [img_background]   ;IMG_BACKGROUND
    mov   ecx, esi
    call  memmove
  .fin:
    ret
  nosb5:
 
        cmp     ebx, 6
        jnz     nosb6
;;Maxis use atomic bts for mutex 4.4.2009
@@:
        bts     dword [bgrlock], 0
        jnc     @f
        call    change_task
        jmp     @b
@@:
        mov     eax, [CURRENT_TASK]
        mov     [bgrlockpid], eax
        cmp     [img_background], static_background_data
        jz      .nomem
        stdcall user_alloc, [mem_BACKGROUND]
        mov     [esp+32], eax
        test    eax, eax
        jz      .nomem
        mov     ebx, eax
        shr     ebx, 12
        or      dword [page_tabs+(ebx-1)*4], DONT_FREE_BLOCK
        mov     esi, [img_background]
        shr     esi, 12
        mov     ecx, [mem_BACKGROUND]
        add     ecx, 0xFFF
        shr     ecx, 12
.z:
        mov     eax, [page_tabs+ebx*4]
        test    al, 1
        jz      @f
        call    free_page
@@:
        mov     eax, [page_tabs+esi*4]
        or      al, PG_UW
        mov     [page_tabs+ebx*4], eax
        mov     eax, ebx
        shl     eax, 12
        invlpg  [eax]
        inc     ebx
        inc     esi
        loop    .z
        ret
.nomem:
        and     [bgrlockpid], 0
        mov     [bgrlock], 0
nosb6:
        cmp     ebx, 7
        jnz     nosb7
        cmp     [bgrlock], 0
        jz      .err
        mov     eax, [CURRENT_TASK]
        cmp     [bgrlockpid], eax
        jnz     .err
        mov     eax, ecx
        mov     ebx, ecx
        shr     eax, 12
        mov     ecx, [page_tabs+(eax-1)*4]
        test    cl, USED_BLOCK+DONT_FREE_BLOCK
        jz      .err
        jnp     .err
        push    eax
        shr     ecx, 12
        dec     ecx
@@:
        and     dword [page_tabs+eax*4], 0
        mov     edx, eax
        shl     edx, 12
        push eax
        invlpg  [edx]
        pop eax
        inc     eax
        loop    @b
        pop     eax
        and     dword [page_tabs+(eax-1)*4], not DONT_FREE_BLOCK
        stdcall user_free, ebx
        mov     [esp+32], eax
        and     [bgrlockpid], 0
        mov     [bgrlock], 0
        ret
.err:
        and     dword [esp+32], 0
        ret
 
nosb7:
    ret
 
force_redraw_background:
    and   [draw_data+32 + RECT.left],dword 0
    and   [draw_data+32 + RECT.top],dword 0
    push  eax ebx
    mov   eax,[Screen_Max_X]
    mov   ebx,[Screen_Max_Y]
    mov   [draw_data+32 + RECT.right],eax
    mov   [draw_data+32 + RECT.bottom],ebx
    pop   ebx eax
    mov   byte [REDRAW_BACKGROUND], 1
    ret
 
align 4
 
sys_getbackground:
;    cmp   eax,1                                  ; SIZE
    dec	  ebx
    jnz   nogb1
    mov   eax,[BgrDataWidth]
    shl   eax,16
    mov   ax,[BgrDataHeight]
    mov   [esp+32],eax
    ret
 
nogb1:
;    cmp   eax,2                                  ; PIXEL
    dec	  ebx
    jnz   nogb2
 
        mov     eax, [img_background]
        test    ecx, ecx
        jz      @f
        cmp     eax, static_background_data
        jz      .ret
@@:
    mov ebx, [mem_BACKGROUND]
    add ebx, 4095
    and ebx, -4096
    sub ebx, 4
    cmp ecx, ebx
    ja  .ret
 
    mov   eax,[ecx+eax]
 
    and   eax, 0xFFFFFF
    mov   [esp+32],eax
.ret:
    ret
  nogb2:
 
;    cmp   eax,4                                  ; TILED / STRETCHED
    dec   ebx
    jnz   nogb4
    mov   eax,[BgrDrawMode]
  nogb4:
    mov   [esp+32],eax
    ret
 
align 4
 
sys_getkey:
        mov     [esp + 32],dword 1
        ; test main buffer
        mov     ebx, [CURRENT_TASK]                          ; TOP OF WINDOW STACK
        movzx   ecx, word [WIN_STACK + ebx * 2]
        mov     edx, [TASK_COUNT]
        cmp     ecx, edx
        jne     .finish
        cmp     [KEY_COUNT], byte 0
        je      .finish
        movzx   eax, byte [KEY_BUFF]
        shl     eax, 8
        push    eax
        dec     byte [KEY_COUNT]
        and     byte [KEY_COUNT], 127
        movzx   ecx, byte [KEY_COUNT]
        add     ecx, 2
        mov     eax, KEY_BUFF + 1
        mov     ebx, KEY_BUFF
        call    memmove
        pop     eax
.ret_eax:
        mov     [esp + 32], eax
        ret
.finish:
; test hotkeys buffer
        mov     ecx, hotkey_buffer
@@:
        cmp     [ecx], ebx
        jz      .found
        add     ecx, 8
        cmp     ecx, hotkey_buffer + 120 * 8
        jb      @b
        ret
.found:
        mov     ax, [ecx + 6]
        shl     eax, 16
        mov     ah, [ecx + 4]
        mov     al, 2
        and     dword [ecx + 4], 0
        and     dword [ecx], 0
        jmp     .ret_eax
 
align 4
 
sys_getbutton:
 
        mov     ebx, [CURRENT_TASK]                         ; TOP OF WINDOW STACK
        mov     [esp + 32], dword 1
        movzx   ecx, word [WIN_STACK + ebx * 2]
        mov     edx, [TASK_COUNT] ; less than 256 processes
        cmp     ecx, edx
        jne     .exit
        movzx   eax, byte [BTN_COUNT]
        test    eax, eax
        jz      .exit
        mov     eax, [BTN_BUFF]
        shl     eax, 8
; // Alver 22.06.2008 // {
        mov       al, byte [btn_down_determ]
        and       al,0xFE                                       ; delete left button bit
; } \\ Alver \\
        mov     [BTN_COUNT], byte 0
        mov     [esp + 32], eax
.exit:
        ret
 
 
align 4
 
sys_cpuusage:
 
;  RETURN:
;
;  +00 dword     process cpu usage
;  +04  word     position in windowing stack
;  +06  word     windowing stack value at current position (cpu nro)
;  +10 12 bytes  name
;  +22 dword     start in mem
;  +26 dword     used mem
;  +30 dword     PID , process idenfification number
;
 
    cmp  ecx,-1         ; who am I ?
    jne  .no_who_am_i
    mov  ecx,[CURRENT_TASK]
  .no_who_am_i:
        cmp     ecx, max_processes
        ja      .nofillbuf
 
; +4: word: position of the window of thread in the window stack
        mov     ax, [WIN_STACK + ecx * 2]
        mov     [ebx+4], ax
; +6: word: number of the thread slot, which window has in the window stack
;           position ecx (has no relation to the specific thread)
        mov     ax, [WIN_POS + ecx * 2]
        mov     [ebx+6], ax
 
        shl     ecx, 5
 
; +0: dword: memory usage
        mov     eax, [ecx+CURRENT_TASK+TASKDATA.cpu_usage]
        mov     [ebx], eax
; +10: 11 bytes: name of the process
        push    ecx
        lea     eax, [ecx*8+SLOT_BASE+APPDATA.app_name]
        add     ebx, 10
        mov     ecx, 11
        call    memmove
        pop     ecx
 
; +22: address of the process in memory
; +26: size of used memory - 1
        push    edi
        lea     edi, [ebx+12]
        xor     eax, eax
        mov     edx, 0x100000*16
        cmp     ecx, 1 shl 5
        je      .os_mem
        mov     edx, [SLOT_BASE+ecx*8+APPDATA.mem_size]
        mov     eax, std_application_base_address
.os_mem:
        stosd
        lea     eax, [edx-1]
        stosd
 
; +30: PID/TID
        mov     eax, [ecx+CURRENT_TASK+TASKDATA.pid]
        stosd
 
    ; window position and size
        push    esi
        lea     esi, [ecx + window_data + WDATA.box]
        movsd
        movsd
        movsd
        movsd
 
    ; Process state (+50)
        mov     eax, dword [ecx+CURRENT_TASK+TASKDATA.state]
        stosd
 
    ; Window client area box
        lea     esi, [ecx*8 + SLOT_BASE + APPDATA.wnd_clientbox]
        movsd
        movsd
        movsd
        movsd
 
    ; Window state
        mov     al, [ecx+window_data+WDATA.fl_wstate]
        stosb
 
        pop     esi
        pop     edi
 
.nofillbuf:
    ; return number of processes
 
    mov    eax,[TASK_COUNT]
    mov    [esp+32],eax
    ret
 
align 4
sys_clock:
        cli
  ; Mikhail Lisovin  xx Jan 2005
  @@:   mov   al, 10
        out   0x70, al
        in    al, 0x71
        test  al, al
        jns   @f
        mov   esi, 1
        call  delay_ms
        jmp   @b
  @@:
  ; end Lisovin's fix
 
        xor   al,al           ; seconds
        out   0x70,al
        in    al,0x71
        movzx ecx,al
        mov   al,02           ; minutes
        shl   ecx,16
        out   0x70,al
        in    al,0x71
        movzx edx,al
        mov   al,04           ; hours
        shl   edx,8
        out   0x70,al
        in    al,0x71
        add   ecx,edx
        movzx edx,al
        add   ecx,edx
        sti
        mov     [esp + 32], ecx
        ret
 
 
align 4
 
sys_date:
 
        cli
  @@:   mov   al, 10
        out   0x70, al
        in    al, 0x71
        test  al, al
        jns   @f
        mov   esi, 1
        call  delay_ms
        jmp   @b
  @@:
 
        mov     ch,0
        mov     al,7            ; date
        out     0x70,al
        in      al,0x71
        mov     cl,al
        mov     al,8            ; month
        shl     ecx,16
        out     0x70,al
        in      al,0x71
        mov     ch,al
        mov     al,9            ; year
        out     0x70,al
        in      al,0x71
        mov     cl,al
        sti
        mov     [esp+32], ecx
        ret
 
 
; redraw status
 
sys_redrawstat:
        cmp     ebx, 1
        jne     no_widgets_away
        ; buttons away
        mov     ecx,[CURRENT_TASK]
  sys_newba2:
        mov     edi,[BTN_ADDR]
        cmp     [edi], dword 0  ; empty button list ?
        je      end_of_buttons_away
        movzx   ebx, word [edi]
        inc     ebx
        mov     eax,edi
  sys_newba:
        dec     ebx
        jz      end_of_buttons_away
 
        add     eax, 0x10
        cmp     cx, [eax]
        jnz     sys_newba
 
        push    eax ebx ecx
        mov     ecx,ebx
        inc     ecx
        shl     ecx, 4
        mov     ebx, eax
        add     eax, 0x10
        call    memmove
        dec     dword [edi]
        pop     ecx ebx eax
 
        jmp     sys_newba2
 
  end_of_buttons_away:
 
        ret
 
  no_widgets_away:
 
        cmp     ebx, 2
        jnz     srl1
 
        mov     edx, [TASK_BASE]      ; return whole screen draw area for this app
        add     edx, draw_data - CURRENT_TASK
        mov     [edx + RECT.left], 0
        mov     [edx + RECT.top], 0
        mov     eax, [Screen_Max_X]
        mov     [edx + RECT.right], eax
        mov     eax, [Screen_Max_Y]
        mov     [edx + RECT.bottom], eax
 
        mov     edi, [TASK_BASE]
        or      [edi - twdw + WDATA.fl_wdrawn], 1   ; no new position & buttons from app
        call    sys_window_mouse
        ret
 
  srl1:
        ret
 
 
sys_drawwindow:
 
    mov   eax,edx
    shr   eax,16+8
    and   eax,15
 
;    cmp   eax,0   ; type I    - original style
    jne   nosyswI
    inc   [mouse_pause]
    call  [_display.disable_mouse]
    call  sys_set_window
    call  [_display.disable_mouse]
    call  drawwindow_I
    ;dec   [mouse_pause]
    ;call   [draw_pointer]
    ;ret
    jmp   draw_window_caption.2
  nosyswI:
 
    cmp   al,1    ; type II   - only reserve area, no draw
    jne   nosyswII
    inc   [mouse_pause]
    call  [_display.disable_mouse]
    call  sys_set_window
    call  [_display.disable_mouse]
    call  sys_window_mouse
    dec   [mouse_pause]
    call   [draw_pointer]
    ret
  nosyswII:
 
    cmp   al,2    ; type III  - new style
    jne   nosyswIII
    inc   [mouse_pause]
    call  [_display.disable_mouse]
    call  sys_set_window
    call  [_display.disable_mouse]
    call  drawwindow_III
    ;dec   [mouse_pause]
    ;call   [draw_pointer]
    ;ret
    jmp   draw_window_caption.2
  nosyswIII:
 
    cmp   al,3    ; type IV - skinned window
    je    draw_skin_window
    cmp   al,4    ; type V - skinned window not sized! {not_sized_skin_window}
    jne   nosyswV
  draw_skin_window:
 
    inc   [mouse_pause]
    call  [_display.disable_mouse]
    call  sys_set_window
    call  [_display.disable_mouse]
    mov   eax, [TASK_COUNT]
    movzx eax, word [WIN_POS + eax*2]
    cmp   eax, [CURRENT_TASK]
    setz  al
    movzx eax, al
    push  eax
    call  drawwindow_IV
    ;dec   [mouse_pause]
    ;call   [draw_pointer]
    ;ret
    jmp   draw_window_caption.2
  nosyswV:
 
    ret
 
 
draw_window_caption:
        inc     [mouse_pause]
        call    [_display.disable_mouse]
 
        xor     eax,eax
        mov     edx,[TASK_COUNT]
        movzx   edx,word[WIN_POS+edx*2]
        cmp     edx,[CURRENT_TASK]
        jne     @f
        inc     eax
    @@: mov     edx,[CURRENT_TASK]
        shl     edx,5
        add     edx,window_data
        movzx   ebx,[edx+WDATA.fl_wstyle]
        and     bl,0x0F
        cmp     bl,3
        je      .draw_caption_style_3           ;{for 3 and 4 style write caption}
        cmp     bl,4
        je      .draw_caption_style_3
 
        jmp     .not_style_3
  .draw_caption_style_3:
 
        push    edx
        call    drawwindow_IV_caption
        add     esp,4
        jmp     .2
 
  .not_style_3:
        cmp     bl,2
        jne     .not_style_2
 
        call    drawwindow_III_caption
        jmp     .2
 
  .not_style_2:
        cmp     bl,0
        jne     .2
 
        call    drawwindow_I_caption
 
;--------------------------------------------------------------
  .2:   ;jmp     @f
        mov     edi,[CURRENT_TASK]
        shl     edi,5
        test    [edi+window_data+WDATA.fl_wstyle],WSTYLE_HASCAPTION
        jz      @f
        mov     edx,[edi*8+SLOT_BASE+APPDATA.wnd_caption]
        or      edx,edx
        jz      @f
 
        movzx   eax,[edi+window_data+WDATA.fl_wstyle]
        and     al,0x0F
        cmp     al,3
        je      .skinned
        cmp     al,4
        je      .skinned
 
        jmp     .not_skinned
  .skinned:
        mov     ebp,[edi+window_data+WDATA.box.left-2]
        mov     bp,word[edi+window_data+WDATA.box.top]
        movzx   eax,word[edi+window_data+WDATA.box.width]
        sub     ax,[_skinmargins.left]
        sub     ax,[_skinmargins.right]
        push    edx
        cwde
        cdq
        mov     ebx,6
        idiv    ebx
        pop     edx
        or      eax,eax
        js      @f
        mov     esi,eax
        mov     ebx,dword[_skinmargins.left-2]
        mov     bx,word[_skinh]
        sub     bx,[_skinmargins.bottom]
        sub     bx,[_skinmargins.top]
        sar     bx,1
        adc     bx,0
        add     bx,[_skinmargins.top]
        add     bx,-3
        add     ebx,ebp
        jmp     .dodraw
 
  .not_skinned:
        cmp     al,1
        je      @f
 
        mov     ebp,[edi+window_data+WDATA.box.left-2]
        mov     bp,word[edi+window_data+WDATA.box.top]
        movzx   eax,word[edi+window_data+WDATA.box.width]
        sub     eax,16
        push    edx
        cwde
        cdq
        mov     ebx,6
        idiv    ebx
        pop     edx
        or      eax,eax
        js      @f
        mov     esi,eax
        mov     ebx,0x00080007
        add     ebx,ebp
.dodraw:
        mov     ecx,[common_colours+16];0x00FFFFFF
        or      ecx, 0x80000000
        xor     edi,edi
; // Alver 22.06.2008 // {
;       call    dtext
        call dtext_asciiz_esi
; } \\ Alver \\
 
    @@:
;--------------------------------------------------------------
        dec     [mouse_pause]
        call    [draw_pointer]
        ret
 
iglobal
align 4
window_topleft dd \
  1, 21,\               ;type 0
  0,  0,\       ;type 1
  5, 20,\       ;type 2
  5,  ?,\       ;type 3 {set by skin}
  5,  ?         ;type 4 {set by skin}
endg
 
set_window_clientbox:
        push    eax ecx edi
 
        mov     eax,[_skinh]
        mov     [window_topleft+4*7],eax
        mov     [window_topleft+4*9],eax
 
        mov     ecx,edi
        sub     edi,window_data
        shl     edi,3
        test    [ecx+WDATA.fl_wstyle],WSTYLE_CLIENTRELATIVE
        jz      @f
 
        movzx   eax,[ecx+WDATA.fl_wstyle]
        and     eax,0x0F
        mov     eax,[eax*8+window_topleft+0]
        mov     [edi+SLOT_BASE+APPDATA.wnd_clientbox.left],eax
        shl     eax,1
        neg     eax
        add     eax,[ecx+WDATA.box.width]
        mov     [edi+SLOT_BASE+APPDATA.wnd_clientbox.width],eax
 
        movzx   eax,[ecx+WDATA.fl_wstyle]
        and     eax,0x0F
        push    [eax*8+window_topleft+0]
        mov     eax,[eax*8+window_topleft+4]
        mov     [edi+SLOT_BASE+APPDATA.wnd_clientbox.top],eax
        neg     eax
        sub     eax,[esp]
        add     eax,[ecx+WDATA.box.height]
        mov     [edi+SLOT_BASE+APPDATA.wnd_clientbox.height],eax
        add     esp,4
 
        pop     edi ecx eax
        ret
    @@:
        xor     eax,eax
        mov     [edi+SLOT_BASE+APPDATA.wnd_clientbox.left],eax
        mov     [edi+SLOT_BASE+APPDATA.wnd_clientbox.top],eax
        mov     eax,[ecx+WDATA.box.width]
        mov     [edi+SLOT_BASE+APPDATA.wnd_clientbox.width],eax
        mov     eax,[ecx+WDATA.box.height]
        mov     [edi+SLOT_BASE+APPDATA.wnd_clientbox.height],eax
 
        pop     edi ecx eax
        ret
 
sys_set_window:
 
    mov   eax,[CURRENT_TASK]
    shl   eax,5
    add   eax,window_data
 
    ; colors
    mov   [eax+WDATA.cl_workarea],edx
    mov   [eax+WDATA.cl_titlebar],esi
    mov   [eax+WDATA.cl_frames],edi
 
    mov   edi, eax
 
    ; check flag (?)
    test  [edi+WDATA.fl_wdrawn],1
    jnz   newd
 
    mov   eax,[timer_ticks] ;[0xfdf0]
    add   eax,100
    mov   [new_window_starting],eax
 
    movsx eax,bx
    mov   [edi+WDATA.box.width],eax
    movsx eax,cx
    mov   [edi+WDATA.box.height],eax
    sar   ebx,16
    sar   ecx,16
    mov   [edi+WDATA.box.left],ebx
    mov   [edi+WDATA.box.top],ecx
 
    call  check_window_position
 
    push  ecx esi edi               ; save for window fullscreen/resize
    ;mov   esi,edi
 
        mov     cl, [edi+WDATA.fl_wstyle]
        mov     eax, [edi+WDATA.cl_frames]
 
    sub   edi,window_data
    shl   edi,3
    add   edi,SLOT_BASE
 
        and     cl,0x0F
        mov     [edi+APPDATA.wnd_caption],0
        cmp     cl,3
        je      set_APPDATA_wnd_caption
        cmp     cl,4                                                            ; {SPraid.simba}
        je      set_APPDATA_wnd_caption
 
        jmp     @f
    set_APPDATA_wnd_caption:
        mov     [edi+APPDATA.wnd_caption],eax
    @@: mov     esi,[esp+0]
 
    add   edi, APPDATA.saved_box
        movsd
        movsd
        movsd
        movsd
    pop   edi esi ecx
 
        mov     esi, [CURRENT_TASK]
        movzx   esi, word [WIN_STACK+esi*2]
        lea     esi, [WIN_POS+esi*2]
        call    waredraw
 
;;;    mov   ebx, 1
;;;    call  delay_hs
    mov   eax, [edi+WDATA.box.left]
    mov   ebx, [edi+WDATA.box.top]
    mov   ecx, [edi+WDATA.box.width]
    mov   edx, [edi+WDATA.box.height]
    add   ecx, eax
    add   edx, ebx
    call  calculatescreen
 
    mov   [KEY_COUNT],byte 0           ; empty keyboard buffer
    mov   [BTN_COUNT],byte 0           ; empty button buffer
 
  newd:
    call  set_window_clientbox
 
    mov   [edi+WDATA.fl_redraw],byte 0   ; no redraw
    mov   edx,edi
 
    ret
 
syscall_windowsettings:
 
  .set_window_caption:
        dec     eax     ; subfunction #1 - set window caption
        jnz     .get_window_caption
 
        ; NOTE: only window owner thread can set its caption,
        ;       so there's no parameter for PID/TID
 
        mov     edi,[CURRENT_TASK]
        shl     edi,5
 
        ; have to check if caption is within application memory limit
        ; check is trivial, and if application resizes its memory,
        ;   caption still can become over bounds
; diamond, 31.10.2006: check removed because with new memory manager
; there can be valid data after APPDATA.mem_size bound
;        mov     ecx,[edi*8+SLOT_BASE+APPDATA.mem_size]
;        add     ecx,255 ; max caption length
;        cmp     ebx,ecx
;        ja      .exit_fail
 
        mov     [edi*8+SLOT_BASE+APPDATA.wnd_caption],ebx
        or      [edi+window_data+WDATA.fl_wstyle],WSTYLE_HASCAPTION
 
        call    draw_window_caption
 
        xor     eax,eax ; eax = 0 (success)
        ret
 
  .get_window_caption:
        dec     eax     ; subfunction #2 - get window caption
        jnz     .exit_fail
 
        ; not implemented yet
 
  .exit_fail:
        xor     eax,eax
        inc     eax     ; eax = 1 (fail)
        ret
 
 
sys_window_move:
 
        mov     edi,[CURRENT_TASK]
        shl     edi,5
        add     edi,window_data
 
        test    [edi+WDATA.fl_wstate],WSTATE_MAXIMIZED
        jnz     .window_move_return
 
        push    dword [edi + WDATA.box.left]  ; save old coordinates
        push    dword [edi + WDATA.box.top]
        push    dword [edi + WDATA.box.width]
        push    dword [edi + WDATA.box.height]
 
        cmp   eax,-1                  ; set new position and size
        je    .no_x_reposition
        mov     [edi + WDATA.box.left], eax
      .no_x_reposition:
        cmp   ebx,-1
        je    .no_y_reposition
        mov     [edi + WDATA.box.top], ebx
      .no_y_reposition:
 
        test    [edi+WDATA.fl_wstate],WSTATE_ROLLEDUP
        jnz     .no_y_resizing
 
        cmp   ecx,-1
        je    .no_x_resizing
        mov     [edi + WDATA.box.width], ecx
      .no_x_resizing:
        cmp   edx,-1
        je    .no_y_resizing
        mov     [edi + WDATA.box.height], edx
      .no_y_resizing:
 
        call  check_window_position
        call  set_window_clientbox
 
        pushad                       ; save for window fullscreen/resize
        mov   esi,edi
        sub   edi,window_data
        shr   edi,5
        shl   edi,8
        add   edi, SLOT_BASE + APPDATA.saved_box
        mov   ecx,4
        cld
        rep   movsd
        popad
 
        pushad                       ; calculcate screen at new position
        mov   eax, [edi + WDATA.box.left]
        mov   ebx, [edi + WDATA.box.top]
        mov   ecx, [edi + WDATA.box.width]
        mov   edx, [edi + WDATA.box.height]
        add   ecx,eax
        add   edx,ebx
 
        call  calculatescreen
        popad
 
        pop   edx                   ; calculcate screen at old position
        pop   ecx
        pop   ebx
        pop   eax
        add   ecx,eax
        add   edx,ebx
        mov   [dlx],eax             ; save for drawlimits
        mov   [dly],ebx
        mov   [dlxe],ecx
        mov   [dlye],edx
        call  calculatescreen
 
        mov   [edi + WDATA.fl_redraw], 1 ; flag the process as redraw
 
        mov   eax,edi               ; redraw screen at old position
        xor   esi,esi
        call  redrawscreen
 
        mov   [DONT_DRAW_MOUSE],byte 0 ; mouse pointer
        mov   [MOUSE_BACKGROUND],byte 0 ; no mouse under
        mov   [MOUSE_DOWN],byte 0 ; react to mouse up/down
 
        call  [draw_pointer]
 
        mov   [window_move_pr],0
 
      .window_move_return:
 
        ret
 
uglobal
  window_move_pr   dd  0x0
  window_move_eax  dd  0x0
  window_move_ebx  dd  0x0
  window_move_ecx  dd  0x0
  window_move_edx  dd  0x0
endg
 
;ok - 100% work
;nt - not tested
;---------------------------------------------------------------------------------------------
;eax
;0 - task switch counter. Ret switch counter in eax. Block. ok.
;1 - change task. Ret nothing. Block. ok.
;2 - performance control
; ebx
; 0 - enable or disable (inversion) PCE flag on CR4 for rdmpc in user mode.
; returned new cr4 in eax. Ret cr4 in eax. Block. ok.
; 1 - is cache enabled. Ret cr0 in eax if enabled else zero in eax. Block. ok.
; 2 - enable cache. Ret 1 in eax. Ret nothing. Block. ok.
; 3 - disable cache. Ret 0 in eax. Ret nothing. Block. ok.
;eax
;3 - rdmsr. Counter in edx. (edx:eax) [esi:edi, edx] => [edx:esi, ecx]. Ret in ebx:eax. Block. ok.
;4 - wrmsr. Counter in edx. (edx:eax) [esi:edi, edx] => [edx:esi, ecx]. Ret in ebx:eax. Block. ok.
;---------------------------------------------------------------------------------------------
sys_sheduler:   
; old sys_sheduler ;noname & halyavin
;    cmp eax,0
;    je shed_counter
;    cmp eax,2
;    je perf_control
;    cmp eax,3
;    je rdmsr_instr
;    cmp eax,4
;    je wrmsr_instr
;    cmp eax,1
;    jne not_supported
;    call change_task ;delay,0
 
;rewritten by   15.11.2009
     test	eax,eax		
     jz         .shed_counter    ;eax=0
     dec	eax             
     jz         change_task	 ;eax=1
     dec	eax
     jz         .perf_control    ;eax=2
     dec	eax
     jz		.rdmsr_instr     ;eax=3
     dec	eax
     jnz	@f
;wrmsr_instr     ;eax=4
;.wrmsr_instr:
;now counter in ecx
;(edx:eax) esi:edi => edx:esi
        ; Fast Call MSR can't be destroy
        ; ® MSR_AMD_EFER ¬®¦­® ¨§¬¥­ïâì, â.ª. ¢ íâ®¬ à¥£¨áâà¥ «¨è
        ; ¢ª«îç îâáï/¢ëª«îç îâáï à áè¨à¥­­ë¥ ¢®§¬®¦­®áâ¨
        cmp     ecx, MSR_SYSENTER_CS
        je      @f
        cmp     ecx, MSR_SYSENTER_ESP
        je      @f
        cmp     ecx, MSR_SYSENTER_EIP
        je      @f
        cmp     ecx, MSR_AMD_STAR
        je      @f
 
        mov     eax, esi
        wrmsr
        ; mov   [esp + 36], eax
        ; mov   [esp + 24], edx ;ret in ebx?
@@:
ret
 
.shed_counter:
    mov eax,[context_counter]
    mov [esp+36],eax
ret
.perf_control:
;    inc eax ;now eax=3
    add eax,3		;restore eax=3
    cmp ebx,eax
    je cache_disable
    dec eax
    cmp ebx,eax
    je cache_enable
    dec eax
    cmp ebx,eax
    je is_cache_enabled
    dec eax
    cmp ebx,eax
    je modify_pce
ret
 
.rdmsr_instr:
;now counter in ecx
;(edx:eax) esi:edi => edx:esi
mov eax,esi
rdmsr
mov [esp+36],eax
mov [esp+24],edx ;ret in ebx?
ret
 
cache_disable:
       mov eax,cr0
       or  eax,01100000000000000000000000000000b
       mov cr0,eax
       wbinvd ;set MESI
ret
 
cache_enable:
       mov eax,cr0
       and eax,10011111111111111111111111111111b
       mov cr0,eax
ret
 
is_cache_enabled:
       mov eax,cr0
       mov ebx,eax
       and eax,01100000000000000000000000000000b
       jz cache_disabled
       mov [esp+36],ebx
cache_disabled:
       mov dword [esp+36],eax ;0
ret
 
modify_pce:
       mov eax,cr4
;       mov ebx,0
;       or  bx,100000000b ;pce
;       xor eax,ebx ;invert pce
       bts eax,8 ;pce=cr4[8]
       mov cr4,eax
       mov [esp+36],eax
ret
;---------------------------------------------------------------------------------------------
 
 
; check if pixel is allowed to be drawn
 
checkpixel:
        push eax edx
 
        mov  edx,[Screen_Max_X]     ; screen x size
        inc  edx
        imul edx, ebx
        add  eax, [_WinMapAddress]
        mov  dl, [eax+edx] ; lea eax, [...]
 
        xor  ecx, ecx
        mov  eax, [CURRENT_TASK]
        cmp  al, dl
        setne cl
 
        pop  edx eax
        ret
 
iglobal
  cpustring db 'CPU',0
endg
 
uglobal
background_defined    db    0    ; diamond, 11.04.2006
endg
 
align 4
; check misc
 
checkmisc:
 
    cmp   [ctrl_alt_del], 1
    jne   nocpustart
 
        mov     ebp, cpustring
        call    fs_execute_from_sysdir
 
    mov   [ctrl_alt_del], 0
 
nocpustart:
    cmp   [mouse_active], 1
    jne   mouse_not_active
    mov   [mouse_active], 0
    xor   edi, edi
    mov   ecx,  [TASK_COUNT]
set_mouse_event:
    add   edi, 256
    or    [edi+SLOT_BASE+APPDATA.event_mask], dword 100000b
    loop  set_mouse_event
 
mouse_not_active:
    cmp   [REDRAW_BACKGROUND],byte 0               ; background update ?
    jz    nobackgr
    cmp    [background_defined], 0
    jz    nobackgr
    cmp   [REDRAW_BACKGROUND], byte 2
    jnz   no_set_bgr_event
    xor   edi, edi
    mov   ecx,  [TASK_COUNT]
set_bgr_event:
    add   edi, 256
    or    [edi+SLOT_BASE+APPDATA.event_mask], 16
    loop  set_bgr_event
no_set_bgr_event:
;    mov   [draw_data+32 + RECT.left],dword 0
;    mov   [draw_data+32 + RECT.top],dword 0
;    mov   eax,[Screen_Max_X]
;    mov   ebx,[Screen_Max_Y]
;    mov   [draw_data+32 + RECT.right],eax
;    mov   [draw_data+32 + RECT.bottom],ebx
    call  drawbackground
    mov   [REDRAW_BACKGROUND],byte 0
    mov   [MOUSE_BACKGROUND],byte 0
 
nobackgr:
 
    ; system shutdown request
 
    cmp  [SYS_SHUTDOWN],byte 0
    je   noshutdown
 
    mov  edx,[shutdown_processes]
 
    cmp  [SYS_SHUTDOWN],dl
    jne  no_mark_system_shutdown
 
    lea   ecx,[edx-1]
    mov   edx,OS_BASE+0x3040
    jecxz @f
markz:
    mov   [edx+TASKDATA.state],byte 3
    add   edx,0x20
    loop  markz
@@:
 
  no_mark_system_shutdown:
 
    call [_display.disable_mouse]
 
    dec  byte [SYS_SHUTDOWN]
    je   system_shutdown
 
noshutdown:
 
 
    mov   eax,[TASK_COUNT]                  ; termination
    mov   ebx,TASK_DATA+TASKDATA.state
    mov   esi,1
 
newct:
    mov   cl,[ebx]
    cmp   cl,byte 3
    jz    terminate
    cmp   cl,byte 4
    jz    terminate
 
    add   ebx,0x20
    inc   esi
    dec   eax
    jnz   newct
    ret
 
; redraw screen
 
redrawscreen:
 
; eax , if process window_data base is eax, do not set flag/limits
 
         pushad
         push  eax
 
;;;         mov   ebx,2
;;;         call  delay_hs
 
         ;mov   ecx,0               ; redraw flags for apps
         xor   ecx,ecx
       newdw2:
 
         inc   ecx
         push  ecx
 
         mov   eax,ecx
         shl   eax,5
         add   eax,window_data
 
         cmp   eax,[esp+4]
         je    not_this_task
                                   ; check if window in redraw area
         mov   edi,eax
 
         cmp   ecx,1               ; limit for background
         jz    bgli
 
         mov   eax, [edi + WDATA.box.left]
         mov   ebx, [edi + WDATA.box.top]
         mov   ecx, [edi + WDATA.box.width]
         mov   edx, [edi + WDATA.box.height]
         add   ecx,eax
         add   edx,ebx
 
         mov   ecx,[dlye]   ; ecx = area y end     ebx = window y start
         cmp   ecx,ebx
         jb    ricino
 
         mov   ecx,[dlxe]   ; ecx = area x end     eax = window x start
         cmp   ecx,eax
         jb    ricino
 
         mov   eax, [edi + WDATA.box.left]
         mov   ebx, [edi + WDATA.box.top]
         mov   ecx, [edi + WDATA.box.width]
         mov   edx, [edi + WDATA.box.height]
         add   ecx, eax
         add   edx, ebx
 
         mov   eax,[dly]    ; eax = area y start     edx = window y end
         cmp   edx,eax
         jb    ricino
 
         mov   eax,[dlx]    ; eax = area x start     ecx = window x end
         cmp   ecx,eax
         jb    ricino
 
        bgli:
 
         cmp   ecx,1
         jnz   .az
         mov   al,[REDRAW_BACKGROUND]
         cmp   al,2
         jz    newdw8
         test  al,al
         jz    .az
         lea   eax,[edi+draw_data-window_data]
         mov   ebx,[dlx]
         cmp   ebx,[eax+RECT.left]
         jae   @f
         mov   [eax+RECT.left],ebx
        @@:
         mov   ebx,[dly]
         cmp   ebx,[eax+RECT.top]
         jae   @f
         mov   [eax+RECT.top],ebx
        @@:
         mov   ebx,[dlxe]
         cmp   ebx,[eax+RECT.right]
         jbe   @f
         mov   [eax+RECT.right],ebx
        @@:
         mov   ebx,[dlye]
         cmp   ebx,[eax+RECT.bottom]
         jbe   @f
         mov   [eax+RECT.bottom],ebx
        @@:
         jmp   newdw8
        .az:
 
         mov   eax,edi
         add   eax,draw_data-window_data
 
         mov   ebx,[dlx]          ; set limits
         mov   [eax + RECT.left], ebx
         mov   ebx,[dly]
         mov   [eax + RECT.top], ebx
         mov   ebx,[dlxe]
         mov   [eax + RECT.right], ebx
         mov   ebx,[dlye]
         mov   [eax + RECT.bottom], ebx
 
         sub   eax,draw_data-window_data
 
         cmp   dword [esp],1
         jne   nobgrd
         mov   byte [REDRAW_BACKGROUND], 1
 
       newdw8:
       nobgrd:
 
         mov   [eax + WDATA.fl_redraw],byte 1    ; mark as redraw
 
       ricino:
 
       not_this_task:
 
         pop   ecx
 
         cmp   ecx,[TASK_COUNT]
         jle   newdw2
 
         pop  eax
         popad
 
         ret
 
calculatebackground:   ; background
 
        mov   edi, [_WinMapAddress]                ; set os to use all pixels
        mov   eax,0x01010101
        mov   ecx, [_WinMapSize]
        shr   ecx, 2
        rep   stosd
 
        mov   byte [REDRAW_BACKGROUND], 0              ; do not draw background!
 
        ret
 
uglobal
  imax    dd 0x0
endg
 
 
 
delay_ms:     ; delay in 1/1000 sec
 
 
        push  eax
        push  ecx
 
        mov   ecx,esi
        ; 
        imul  ecx, 33941
        shr   ecx, 9
        ; 
 
        in    al,0x61
        and   al,0x10
        mov   ah,al
        cld
 
 cnt1:  in    al,0x61
        and   al,0x10
        cmp   al,ah
        jz    cnt1
 
        mov   ah,al
        loop  cnt1
 
        pop   ecx
        pop   eax
 
        ret
 
 
set_app_param:
        mov     edi, [TASK_BASE]
        mov     eax, [edi + TASKDATA.event_mask]
        mov     [edi + TASKDATA.event_mask], ebx
        mov     [esp+32], eax
        ret
 
 
 
delay_hs:     ; delay in 1/100 secs
; ebx = delay time
        push  ecx
        push  edx
 
        mov   edx,[timer_ticks]
 
      newtic:
        mov   ecx,[timer_ticks]
        sub   ecx,edx
        cmp   ecx,ebx
        jae   zerodelay
 
        call  change_task
 
        jmp   newtic
 
      zerodelay:
        pop   edx
        pop   ecx
 
        ret
 
align 16	;very often call this subrutine
memmove:       ; memory move in bytes
 
; eax = from
; ebx = to
; ecx = no of bytes
    test ecx, ecx
    jle  .ret
 
    push esi edi ecx
 
    mov  edi, ebx
    mov  esi, eax
 
    test ecx, not 11b
    jz   @f
 
    push ecx
    shr  ecx, 2
    rep  movsd
    pop  ecx
    and  ecx, 11b
    jz   .finish
  @@:
    rep  movsb
 
  .finish:
    pop  ecx edi esi
  .ret:
    ret
 
 
;  Sysfunction 34, read_floppy_file, is obsolete. Use 58 or 70 function instead.
;align 4
;
;read_floppy_file:
;
;; as input
;;
;; eax pointer to file
;; ebx file lenght
;; ecx start 512 byte block number
;; edx number of blocks to read
;; esi pointer to return/work area (atleast 20 000 bytes)
;;
;;
;; on return
;;
;; eax = 0 command succesful
;;       1 no fd base and/or partition defined
;;       2 yet unsupported FS
;;       3 unknown FS
;;       4 partition not defined at hd
;;       5 file not found
;; ebx = size of file
;
;     mov   edi,[TASK_BASE]
;     add   edi,0x10
;     add   esi,[edi]
;     add   eax,[edi]
;
;     pushad
;     mov  edi,esi
;     add  edi,1024
;     mov  esi,0x100000+19*512
;     sub  ecx,1
;     shl  ecx,9
;     add  esi,ecx
;     shl  edx,9
;     mov  ecx,edx
;     cld
;     rep  movsb
;     popad
;
;     mov   [esp+36],eax
;     mov   [esp+24],ebx
;     ret
 
 
 
align 4
 
sys_programirq:
 
    mov   eax, [TASK_BASE]
    add   ebx, [eax + TASKDATA.mem_start]
 
    cmp   ecx, 16
    jae   .not_owner
    mov   edi, [eax + TASKDATA.pid]
    cmp   edi, [irq_owner + 4 * ecx]
    je    .spril1
.not_owner:
    xor   ecx, ecx
    inc   ecx
    jmp   .end
  .spril1:
 
    shl   ecx, 6
    mov   esi, ebx
    lea   edi, [irq00read + ecx]
    push  16
    pop   ecx
 
    cld
    rep   movsd
  .end:
    mov   [esp+32], ecx
    ret
 
 
align 4
 
get_irq_data:
     movzx esi, bh                       ; save number of subfunction, if bh = 1, return data size, otherwise, read data
     xor   bh, bh
     cmp   ebx, 16
     jae   .not_owner
     mov   edx, [4 * ebx + irq_owner]    ; check for irq owner
 
     mov   eax,[TASK_BASE]
 
     cmp   edx,[eax+TASKDATA.pid]
     je    gidril1
.not_owner:
     xor   edx, edx
     dec   edx
     jmp   gid1
 
  gidril1:
 
     shl   ebx, 12
     lea   eax, [ebx + IRQ_SAVE]         ; calculate address of the beginning of buffer + 0x0 - data size
     mov   edx, [eax]                    ;                                              + 0x4 - data offset
     dec   esi
     jz    gid1
     test  edx, edx                      ; check if buffer is empty
     jz    gid1
 
     mov   ebx, [eax + 0x4]
     mov   edi, ecx
 
     mov   ecx, 4000                     ; buffer size, used frequently
 
     cmp   ebx, ecx                      ; check for the end of buffer, if end of buffer, begin cycle again
     jb    @f
 
     xor   ebx, ebx
 
   @@:
 
     lea   esi, [ebx + edx]              ; calculate data size and offset
     cld
     cmp   esi, ecx                      ; if greater than the buffer size, begin cycle again
     jbe   @f
 
     sub   ecx, ebx
     sub   edx, ecx
 
     lea   esi, [eax + ebx + 0x10]
     rep   movsb
 
     xor   ebx, ebx
   @@:
     lea   esi, [eax + ebx + 0x10]
     mov   ecx, edx
     add   ebx, edx
 
     rep   movsb
     mov   edx, [eax]
     mov   [eax], ecx                    ; set data size to zero
     mov   [eax + 0x4], ebx              ; set data offset
 
   gid1:
     mov   [esp+32], edx                 ; eax
     ret
 
 
set_io_access_rights:
      push edi eax
      mov edi, tss._io_map_0
;     mov   ecx,eax
;     and   ecx,7    ; offset in byte
;     shr   eax,3    ; number of byte
;     add   edi,eax
;     mov   ebx,1
;     shl   ebx,cl
     test  ebp,ebp
;     cmp   ebp,0                ; enable access - ebp = 0
     jnz   siar1
;     not   ebx
;     and   [edi],byte bl
     btr [edi], eax
     pop eax edi
     ret
siar1:
     bts [edi], eax
  ;  or    [edi],byte bl        ; disable access - ebp = 1
     pop eax edi
     ret
;reserve/free group of ports
;  * eax = 46 - number function
;  * ebx = 0 - reserve, 1 - free
;  * ecx = number start arrea of ports
;  * edx = number end arrea of ports (include last number of port)
;Return value:
;  * eax = 0 - succesful 
;  * eax = 1 - error
;  * The system has reserve this ports:
;    0..0x2d, 0x30..0x4d, 0x50..0xdf, 0xe5..0xff (include last number of port).
;destroys eax,ebx, ebp
r_f_port_area:
 
     test  ebx, ebx
     jnz   free_port_area
;     je    r_port_area
;     jmp   free_port_area
 
;   r_port_area:
 
;     pushad
 
     cmp   ecx,edx            ; beginning > end ?
     ja    rpal1
     cmp   edx,65536
     jae   rpal1
     mov   eax,[RESERVED_PORTS]
     test  eax,eax            ; no reserved areas ?
     je    rpal2
     cmp   eax,255            ; max reserved
     jae   rpal1
 rpal3:
     mov   ebx,eax
     shl   ebx,4
     add   ebx,RESERVED_PORTS
     cmp   ecx,[ebx+8]
     ja    rpal4
     cmp   edx,[ebx+4]
     jae   rpal1
;     jb    rpal4
;     jmp   rpal1
 rpal4:
     dec   eax
     jnz   rpal3
     jmp   rpal2
   rpal1:
;     popad
;     mov   eax,1
     xor    eax,eax
     inc    eax
     ret
   rpal2:
;     popad
     ; enable port access at port IO map
	cli
	pushad                        ; start enable io map
 
	cmp   edx,65536 ;16384
	jae   no_unmask_io ; jge
	mov   eax,ecx
;	push	ebp
	xor	ebp,ebp                ; enable - eax = port
new_port_access:
;     pushad
	call	set_io_access_rights
;     popad
     inc   eax
     cmp   eax,edx
     jbe   new_port_access
;	pop	ebp
no_unmask_io:
	popad                         ; end enable io map
     sti
 
     mov   eax,[RESERVED_PORTS]
     add   eax,1
     mov   [RESERVED_PORTS],eax
     shl   eax,4
     add   eax,RESERVED_PORTS
     mov   ebx,[TASK_BASE]
     mov   ebx,[ebx+TASKDATA.pid]
     mov   [eax],ebx
     mov   [eax+4],ecx
     mov   [eax+8],edx
 
     xor   eax, eax
     ret
 
free_port_area:
 
;     pushad
     mov   eax,[RESERVED_PORTS]     ; no reserved areas ?
     test  eax,eax
     jz    frpal2
     mov   ebx,[TASK_BASE]
     mov   ebx,[ebx+TASKDATA.pid]
   frpal3:
     mov   edi,eax
     shl   edi,4
     add   edi,RESERVED_PORTS
     cmp   ebx,[edi]
     jne   frpal4
     cmp   ecx,[edi+4]
     jne   frpal4
     cmp   edx,[edi+8]
     jne   frpal4
     jmp   frpal1
   frpal4:
     dec   eax
     jnz   frpal3
   frpal2:
;     popad
     inc   eax
     ret
   frpal1:
	push	ecx
	mov   ecx,256
	sub   ecx,eax
	shl   ecx,4
	mov   esi,edi
	add   esi,16
	cld
	rep   movsb
 
	dec   dword [RESERVED_PORTS]
;popad
;disable port access at port IO map
 
;     pushad                        ; start disable io map
     pop	eax	;start port
     cmp   edx,65536 ;16384
     jge   no_mask_io
 
;     mov   eax,ecx
	xor	ebp,ebp
	inc	ebp
new_port_access_disable:
;     pushad
;     mov   ebp,1                  ; disable - eax = port
     call  set_io_access_rights
;     popad
     inc   eax
     cmp   eax,edx
     jbe   new_port_access_disable
no_mask_io:
;     popad                         ; end disable io map
     xor   eax, eax
     ret
 
 
reserve_free_irq:
 
     xor   esi, esi
     inc   esi
     cmp   ecx, 16
     jae   ril1
 
     push  ecx
     lea   ecx, [irq_owner + 4 * ecx]
     mov   edx, [ecx]
     mov   eax, [TASK_BASE]
     mov   edi, [eax + TASKDATA.pid]
     pop   eax
     dec   ebx
     jnz   reserve_irq
 
     cmp   edx, edi
     jne   ril1
     dec   esi
     mov   [ecx], esi
 
     jmp   ril1
 
  reserve_irq:
 
     cmp   dword [ecx], 0
     jne   ril1
 
     mov   ebx, [f_irqs + 4 * eax]
 
     stdcall attach_int_handler, eax, ebx, dword 0
 
     mov   [ecx], edi
 
     dec   esi
   ril1:
     mov   [esp+32], esi ; return in eax
     ret
 
iglobal
f_irqs:
     dd 0x0
     dd 0x0
     dd p_irq2
     dd p_irq3
     dd p_irq4
     dd p_irq5
     dd p_irq6
     dd p_irq7
     dd p_irq8
     dd p_irq9
     dd p_irq10
     dd p_irq11
     dd 0x0
     dd 0x0
     dd p_irq14
     dd p_irq15
 
endg
 
drawbackground:
       inc   [mouse_pause]
       cmp   [SCR_MODE],word 0x12
       je   dbrv20
     dbrv12:
       cmp  [SCR_MODE],word 0100000000000000b
       jge  dbrv20
       cmp  [SCR_MODE],word 0x13
       je   dbrv20
       call  vesa12_drawbackground
       dec   [mouse_pause]
       call   [draw_pointer]
       ret
     dbrv20:
       cmp   [BgrDrawMode],dword 1
       jne   bgrstr
       call  vesa20_drawbackground_tiled
       dec   [mouse_pause]
       call   [draw_pointer]
       ret
     bgrstr:
       call  vesa20_drawbackground_stretch
       dec   [mouse_pause]
       call   [draw_pointer]
       ret
 
align 4
 
syscall_putimage:                       ; PutImage
sys_putimage:
     test  ecx,0x80008000
     jnz   .exit
     test  ecx,0x0000FFFF
     jz    .exit
     test  ecx,0xFFFF0000
     jnz   @f
  .exit:
     ret
 @@:
        mov     edi,[current_slot]
        add     dx,word[edi+APPDATA.wnd_clientbox.top]
        rol     edx,16
        add     dx,word[edi+APPDATA.wnd_clientbox.left]
        rol     edx,16
  .forced:
        push    ebp esi 0
        mov     ebp, putimage_get24bpp
        mov     esi, putimage_init24bpp
sys_putimage_bpp:
;        call    [disable_mouse] ; this will be done in xxx_putimage
;        mov     eax, vga_putimage
        cmp     [SCR_MODE], word 0x12
        jz      @f   ;.doit
        mov     eax, vesa12_putimage
        cmp     [SCR_MODE], word 0100000000000000b
        jae     @f
        cmp     [SCR_MODE], word 0x13
        jnz     .doit
@@:
        mov     eax, vesa20_putimage
.doit:
        inc     [mouse_pause]
        call    eax
        dec     [mouse_pause]
        pop     ebp esi ebp
        jmp     [draw_pointer]
 
syscall_putimage_palette:
        mov     edi, esi
        mov     esi, edx
        mov     edx, ecx
        mov     ecx, ebx
        mov     ebx, eax
sys_putimage_palette:
; ebx = pointer to image
; ecx = [xsize]*65536 + [ysize]
; edx = [xstart]*65536 + [ystart]
; esi = number of bits per pixel, must be 8, 24 or 32
; edi = pointer to palette
; ebp = row delta
        mov     eax, [CURRENT_TASK]
        shl     eax, 8
        add     dx, word [eax+SLOT_BASE+APPDATA.wnd_clientbox.top]
        rol     edx, 16
        add     dx, word [eax+SLOT_BASE+APPDATA.wnd_clientbox.left]
        rol     edx, 16
.forced:
        cmp     esi, 1
        jnz     @f
        push    edi
        mov     eax, [edi+4]
        sub     eax, [edi]
        push    eax
        push    dword [edi]
        push    0ffffff80h
        mov     edi, esp
        call    put_mono_image
        add     esp, 12
        pop     edi
        ret
@@:
        cmp     esi, 2
        jnz     @f
        push    edi
        push    0ffffff80h
        mov     edi, esp
        call    put_2bit_image
        pop     eax
        pop     edi
        ret
@@:
        cmp     esi, 4
        jnz     @f
        push    edi
        push    0ffffff80h
        mov     edi, esp
        call    put_4bit_image
        pop     eax
        pop     edi
        ret
@@:
        push    ebp esi ebp
        cmp     esi, 8
        jnz     @f
        mov     ebp, putimage_get8bpp
        mov     esi, putimage_init8bpp
        jmp     sys_putimage_bpp
@@:
        cmp     esi, 15
        jnz     @f
        mov     ebp, putimage_get15bpp
        mov     esi, putimage_init15bpp
        jmp     sys_putimage_bpp
@@:
        cmp     esi, 16
        jnz     @f
        mov     ebp, putimage_get16bpp
        mov     esi, putimage_init16bpp
        jmp     sys_putimage_bpp
@@:
        cmp     esi, 24
        jnz     @f
        mov     ebp, putimage_get24bpp
        mov     esi, putimage_init24bpp
        jmp     sys_putimage_bpp
@@:
        cmp     esi, 32
        jnz     @f
        mov     ebp, putimage_get32bpp
        mov     esi, putimage_init32bpp
        jmp     sys_putimage_bpp
@@:
        pop     ebp esi ebp
        ret
 
put_mono_image:
        push    ebp esi ebp
        mov     ebp, putimage_get1bpp
        mov     esi, putimage_init1bpp
        jmp     sys_putimage_bpp
put_2bit_image:
        push    ebp esi ebp
        mov     ebp, putimage_get2bpp
        mov     esi, putimage_init2bpp
        jmp     sys_putimage_bpp
put_4bit_image:
        push    ebp esi ebp
        mov     ebp, putimage_get4bpp
        mov     esi, putimage_init4bpp
        jmp     sys_putimage_bpp
 
putimage_init24bpp:
        lea     eax, [eax*3]
putimage_init8bpp:
        ret
 
align 16
putimage_get24bpp:
        movzx   eax, byte [esi+2]
        shl     eax, 16
        mov     ax, [esi]
        add     esi, 3
        ret     4
align 16
putimage_get8bpp:
        movzx   eax, byte [esi]
        push    edx
        mov     edx, [esp+8]
        mov     eax, [edx+eax*4]
        pop     edx
        inc     esi
        ret     4
 
putimage_init1bpp:
        add     eax, ecx
        push    ecx
        add     eax, 7
        add     ecx, 7
        shr     eax, 3
        shr     ecx, 3
        sub     eax, ecx
        pop     ecx
        ret
align 16
putimage_get1bpp:
        push    edx
        mov     edx, [esp+8]
        mov     al, [edx]
        add     al, al
        jnz     @f
        lodsb
        adc     al, al
@@:
        mov     [edx], al
        sbb     eax, eax
        and     eax, [edx+8]
        add     eax, [edx+4]
        pop     edx
        ret     4
 
putimage_init2bpp:
        add     eax, ecx
        push    ecx
        add     ecx, 3
        add     eax, 3
        shr     ecx, 2
        shr     eax, 2
        sub     eax, ecx
        pop     ecx
        ret
align 16
putimage_get2bpp:
        push    edx
        mov     edx, [esp+8]
        mov     al, [edx]
        mov     ah, al
        shr     al, 6
        shl     ah, 2
        jnz     .nonewbyte
        lodsb
        mov     ah, al
        shr     al, 6
        shl     ah, 2
        add     ah, 1
.nonewbyte:
        mov     [edx], ah
        mov     edx, [edx+4]
        movzx   eax, al
        mov     eax, [edx+eax*4]
        pop     edx
        ret     4
 
putimage_init4bpp:
        add     eax, ecx
        push    ecx
        add     ecx, 1
        add     eax, 1
        shr     ecx, 1
        shr     eax, 1
        sub     eax, ecx
        pop     ecx
        ret
align 16
putimage_get4bpp:
        push    edx
        mov     edx, [esp+8]
        add     byte [edx], 80h
        jc      @f
        movzx   eax, byte [edx+1]
        mov     edx, [edx+4]
        and     eax, 0x0F
        mov     eax, [edx+eax*4]
        pop     edx
        ret     4
@@:
        movzx   eax, byte [esi]
        add     esi, 1
        mov     [edx+1], al
        shr     eax, 4
        mov     edx, [edx+4]
        mov     eax, [edx+eax*4]
        pop     edx
        ret     4
 
putimage_init32bpp:
        shl     eax, 2
        ret
align 16
putimage_get32bpp:
        lodsd
        ret     4
 
putimage_init15bpp:
putimage_init16bpp:
        add     eax, eax
        ret
align 16
putimage_get15bpp:
; 0RRRRRGGGGGBBBBB -> 00000000RRRRR000GGGGG000BBBBB000
        push    ecx edx
        movzx   eax, word [esi]
        add     esi, 2
        mov     ecx, eax
        mov     edx, eax
        and     eax, 0x1F
        and     ecx, 0x1F shl 5
        and     edx, 0x1F shl 10
        shl     eax, 3
        shl     ecx, 6
        shl     edx, 9
        or      eax, ecx
        or      eax, edx
        pop     edx ecx
        ret     4
 
align 16
putimage_get16bpp:
; RRRRRGGGGGGBBBBB -> 00000000RRRRR000GGGGGG00BBBBB000
        push    ecx edx
        movzx   eax, word [esi]
        add     esi, 2
        mov     ecx, eax
        mov     edx, eax
        and     eax, 0x1F
        and     ecx, 0x3F shl 5
        and     edx, 0x1F shl 11
        shl     eax, 3
        shl     ecx, 5
        shl     edx, 8
        or      eax, ecx
        or      eax, edx
        pop     edx ecx
        ret     4
 
; eax x beginning
; ebx y beginning
; ecx x end
        ; edx y end
; edi color
 
__sys_drawbar:
        mov     esi,[current_slot]
        add     eax,[esi+APPDATA.wnd_clientbox.left]
        add     ecx,[esi+APPDATA.wnd_clientbox.left]
        add     ebx,[esi+APPDATA.wnd_clientbox.top]
        add     edx,[esi+APPDATA.wnd_clientbox.top]
  .forced:
    inc   [mouse_pause]
;        call    [disable_mouse]
    cmp   [SCR_MODE],word 0x12
    je   dbv20
   sdbv20:
    cmp  [SCR_MODE],word 0100000000000000b
    jge  dbv20
    cmp  [SCR_MODE],word 0x13
    je   dbv20
    call vesa12_drawbar
    dec   [mouse_pause]
    call   [draw_pointer]
    ret
  dbv20:
    call vesa20_drawbar
    dec   [mouse_pause]
    call   [draw_pointer]
    ret
 
 
 
kb_read:
 
        push    ecx edx
 
        mov     ecx,0x1ffff ; last 0xffff, new value in view of fast CPU's
      kr_loop:
        in      al,0x64
        test    al,1
        jnz     kr_ready
        loop    kr_loop
        mov     ah,1
        jmp     kr_exit
      kr_ready:
        push    ecx
        mov     ecx,32
      kr_delay:
        loop    kr_delay
        pop     ecx
        in      al,0x60
        xor     ah,ah
      kr_exit:
 
        pop     edx ecx
 
        ret
 
 
kb_write:
 
        push    ecx edx
 
        mov     dl,al
;        mov     ecx,0x1ffff ; last 0xffff, new value in view of fast CPU's
;      kw_loop1:
;        in      al,0x64
;        test    al,0x20
;        jz      kw_ok1
;        loop    kw_loop1
;        mov     ah,1
;        jmp     kw_exit
;      kw_ok1:
        in      al,0x60
        mov     ecx,0x1ffff ; last 0xffff, new value in view of fast CPU's
      kw_loop:
        in      al,0x64
        test    al,2
        jz      kw_ok
        loop    kw_loop
        mov     ah,1
        jmp     kw_exit
      kw_ok:
        mov     al,dl
        out     0x60,al
        mov     ecx,0x1ffff ; last 0xffff, new value in view of fast CPU's
      kw_loop3:
        in      al,0x64
        test    al,2
        jz      kw_ok3
        loop    kw_loop3
        mov     ah,1
        jmp     kw_exit
      kw_ok3:
        mov     ah,8
      kw_loop4:
        mov     ecx,0x1ffff ; last 0xffff, new value in view of fast CPU's
      kw_loop5:
        in      al,0x64
        test    al,1
        jnz     kw_ok4
        loop    kw_loop5
        dec     ah
        jnz     kw_loop4
      kw_ok4:
        xor     ah,ah
      kw_exit:
 
        pop     edx ecx
 
        ret
 
 
kb_cmd:
 
        mov     ecx,0x1ffff ; last 0xffff, new value in view of fast CPU's
      c_wait:
        in      al,0x64
        test    al,2
        jz      c_send
        loop    c_wait
        jmp     c_error
      c_send:
        mov     al,bl
        out     0x64,al
        mov     ecx,0x1ffff ; last 0xffff, new value in view of fast CPU's
      c_accept:
        in      al,0x64
        test    al,2
        jz      c_ok
        loop    c_accept
      c_error:
        mov     ah,1
        jmp     c_exit
      c_ok:
        xor     ah,ah
      c_exit:
        ret
 
 
setmouse:  ; set mousepicture -pointer
           ; ps2 mouse enable
 
     mov     [MOUSE_PICTURE],dword mousepointer
 
     cli
 
     ret
 
if used _rdtsc
_rdtsc:
     bt [cpu_caps], CAPS_TSC
     jnc ret_rdtsc
     rdtsc
     ret
   ret_rdtsc:
     mov   edx,0xffffffff
     mov   eax,0xffffffff
     ret
end if
 
rerouteirqs:
 
        cli
 
        mov     al,0x11         ;  icw4, edge triggered
        out     0x20,al
        call    pic_delay
        out     0xA0,al
        call    pic_delay
 
        mov     al,0x20         ;  generate 0x20 +
        out     0x21,al
        call    pic_delay
        mov     al,0x28         ;  generate 0x28 +
        out     0xA1,al
        call    pic_delay
 
        mov     al,0x04         ;  slave at irq2
        out     0x21,al
        call    pic_delay
        mov     al,0x02         ;  at irq9
        out     0xA1,al
        call    pic_delay
 
        mov     al,0x01         ;  8086 mode
        out     0x21,al
        call    pic_delay
        out     0xA1,al
        call    pic_delay
 
        mov     al,255          ; mask all irq's
        out     0xA1,al
        call    pic_delay
        out     0x21,al
        call    pic_delay
 
        mov     ecx,0x1000
        cld
picl1:  call    pic_delay
        loop    picl1
 
        mov     al,255          ; mask all irq's
        out     0xA1,al
        call    pic_delay
        out     0x21,al
        call    pic_delay
 
        cli
 
        ret
 
 
pic_delay:
 
        jmp     pdl1
pdl1:   ret
 
 
sys_msg_board_str:
 
     pushad
   @@:
     cmp    [esi],byte 0
     je     @f
     mov    eax,1
     movzx  ebx,byte [esi]
     call   sys_msg_board
     inc    esi
     jmp    @b
   @@:
     popad
     ret
 
sys_msg_board_byte:
; in: al = byte to display
; out: nothing
; destroys: nothing
        pushad
        mov     ecx, 2
        shl     eax, 24
        jmp     @f
 
sys_msg_board_word:
; in: ax = word to display
; out: nothing
; destroys: nothing
        pushad
        mov     ecx, 4
        shl     eax, 16
        jmp     @f
 
sys_msg_board_dword:
; in: eax = dword to display
; out: nothing
; destroys: nothing
        pushad
        mov     ecx, 8
@@:
        push    ecx
        rol     eax, 4
        push    eax
        and     al, 0xF
        cmp     al, 10
        sbb     al, 69h
        das
        mov     bl, al
        xor     eax, eax
        inc     eax
        call    sys_msg_board
        pop     eax
        pop     ecx
        loop    @b
        popad
        ret
 
uglobal
  msg_board_data: times 4096 db 0
  msg_board_count dd 0x0
endg
 
sys_msg_board:
 
; eax=1 : write :  bl byte to write
; eax=2 :  read :  ebx=0 -> no data, ebx=1 -> data in al
 
        mov     ecx, [msg_board_count]
        cmp     eax, 1
        jne     .smbl1
 
if defined debug_com_base
 
        push    dx ax
 
       @@:                              ; Wait for empty transmit register  (yes, this slows down system..)
        mov     dx, debug_com_base+5
        in      al, dx
        test    al, 1 shl 5
        jz      @r
 
        mov     dx, debug_com_base      ; Output the byte
        mov     al, bl
        out     dx, al
 
        pop     ax dx
 
end if
 
        mov     [msg_board_data+ecx],bl
        inc     ecx
        and     ecx, 4095
        mov     [msg_board_count], ecx
        mov     [check_idle_semaphore], 5
        ret
.smbl1:
        cmp     eax, 2
        jne     .smbl2
        test    ecx, ecx
        jz      .smbl21
        mov     eax, msg_board_data+1
        mov     ebx, msg_board_data
        movzx   edx, byte [ebx]
        call    memmove
        dec     [msg_board_count]
        mov     [esp + 36], edx ;eax
        mov     [esp + 24], dword 1
        ret
.smbl21:
        mov     [esp+36], ecx
        mov     [esp+24], ecx
.smbl2:
        ret
 
 
 
sys_process_def:
        mov     edi, [CURRENT_TASK]
 
        dec     eax             ; 1 = set keyboard mode
     jne   no_set_keyboard_setup
 
     shl   edi,8
     mov   [edi+SLOT_BASE + APPDATA.keyboard_mode],bl
 
     ret
 
   no_set_keyboard_setup:
 
        dec     eax             ; 2 = get keyboard mode
     jne   no_get_keyboard_setup
 
     shl   edi,8
     movzx eax, byte [SLOT_BASE+edi + APPDATA.keyboard_mode]
 
     mov   [esp+36],eax
 
     ret
 
   no_get_keyboard_setup:
 
        dec     eax             ; 3 = get keyboard ctrl, alt, shift
     jne   no_get_keyboard_cas
 
;     xor   eax,eax
;     movzx eax,byte [shift]
;     movzx ebx,byte [ctrl]
;     shl   ebx,2
;     add   eax,ebx
;     movzx ebx,byte [alt]
;     shl   ebx,3
;     add   eax,ebx
 
 ;// mike.dld [
     mov   eax, [kb_state]
 ;// mike.dld ]
 
     mov   [esp+36],eax
 
     ret
 
   no_get_keyboard_cas:
 
        dec     eax
        jnz     no_add_keyboard_hotkey
 
        mov     eax, hotkey_list
@@:
        cmp     dword [eax+8], 0
        jz      .found_free
        add     eax, 16
        cmp     eax, hotkey_list+16*256
        jb      @b
        mov     dword [esp+36], 1
        ret
.found_free:
        mov     [eax+8], edi
        mov     [eax+4], ecx
        movzx   ebx, bl
        lea     ebx, [hotkey_scancodes+ebx*4]
        mov     ecx, [ebx]
        mov     [eax], ecx
        mov     [ebx], eax
        mov     [eax+12], ebx
        jecxz   @f
        mov     [ecx+12], eax
@@:
        and     dword [esp+36], 0
        ret
 
no_add_keyboard_hotkey:
 
        dec     eax
        jnz     no_del_keyboard_hotkey
 
        movzx   ebx, bl
        lea     ebx, [hotkey_scancodes+ebx*4]
        mov     eax, [ebx]
.scan:
        test    eax, eax
        jz      .notfound
        cmp     [eax+8], edi
        jnz     .next
        cmp     [eax+4], ecx
        jz      .found
.next:
        mov     eax, [eax]
        jmp     .scan
.notfound:
        mov     dword [esp+36], 1
        ret
.found:
        mov     ecx, [eax]
        jecxz   @f
        mov     edx, [eax+12]
        mov     [ecx+12], edx
@@:
        mov     ecx, [eax+12]
        mov     edx, [eax]
        mov     [ecx], edx
        xor     edx, edx
        mov     [eax+4], edx
        mov     [eax+8], edx
        mov     [eax+12], edx
        mov     [eax], edx
        mov     [esp+36], edx
        ret
 
no_del_keyboard_hotkey:
     ret
 
 
align 4
 
sys_gs:                         ; direct screen access
 
     cmp  eax,1                 ; resolution
     jne  no_gs1
     mov  eax,[Screen_Max_X]
     shl  eax,16
     mov  ax,[Screen_Max_Y]
     add  eax,0x00010001
     mov  [esp+36],eax
     ret
   no_gs1:
 
     cmp   eax,2                ; bits per pixel
     jne   no_gs2
     movzx eax,byte [ScreenBPP]
     mov   [esp+36],eax
     ret
   no_gs2:
 
     cmp   eax,3                ; bytes per scanline
     jne   no_gs3
     mov   eax,[BytesPerScanLine]
     mov   [esp+36],eax
     ret
   no_gs3:
 
     or  [esp+36],dword -1
     ret
 
 
align 4 ; PCI functions
 
sys_pci:
 
     call  pci_api
     mov   [esp+36],eax
     ret
 
 
align 4  ;  system functions
 
syscall_setpixel:                       ; SetPixel
 
        mov     eax, ebx
        mov     ebx, ecx
        mov     ecx, edx
        mov     edx, [TASK_BASE]
        add     eax, [edx-twdw+WDATA.box.left]
        add     ebx, [edx-twdw+WDATA.box.top]
        mov     edi, [current_slot]
        add     eax, [edi+APPDATA.wnd_clientbox.left]
        add     ebx, [edi+APPDATA.wnd_clientbox.top]
        xor     edi, edi ; no force
;       mov     edi, 1
        call    [_display.disable_mouse]
        jmp     [putpixel]
 
align 4
 
syscall_writetext:                      ; WriteText
 
        mov   eax,[TASK_BASE]
        mov   ebp,[eax-twdw+WDATA.box.left]
        push  esi
        mov   esi,[current_slot]
        add   ebp,[esi+APPDATA.wnd_clientbox.left]
        shl   ebp,16
        add   ebp,[eax-twdw+WDATA.box.top]
        add   bp,word[esi+APPDATA.wnd_clientbox.top]
        pop   esi
        add   ebx,ebp
        mov   eax,edi
        xor   edi,edi
        jmp   dtext
 
align 4
 
syscall_openramdiskfile:                ; OpenRamdiskFile
 
        mov     eax, ebx
        mov     ebx, ecx
        mov     ecx, edx
        mov     edx, esi
        mov     esi, 12
        call    fileread
        mov     [esp+32], eax
        ret
 
align 4
 
syscall_drawrect:                       ; DrawRect
 
        mov     edi, edx ; color + gradient
        and     edi, 0x80FFFFFF
        test    bx, bx  ; x.size
        je      .drectr
        test    cx, cx ; y.size
        je      .drectr
 
        mov     eax, ebx ; bad idea
        mov     ebx, ecx
 
        movzx   ecx, ax ; ecx - x.size
        shr     eax, 16 ; eax - x.coord
        movzx   edx, bx ; edx - y.size
        shr     ebx, 16 ; ebx - y.coord
        mov     esi, [current_slot]
 
        add     eax, [esi + APPDATA.wnd_clientbox.left]
        add     ebx, [esi + APPDATA.wnd_clientbox.top]
        add     ecx, eax
        add     edx, ebx
        jmp     [drawbar]
.drectr:
        ret
 
align 4
syscall_getscreensize:                  ; GetScreenSize
        mov     ax, [Screen_Max_X]
        shl     eax, 16
        mov     ax, [Screen_Max_Y]
        mov     [esp + 32], eax
        ret
 
align 4
 
syscall_cdaudio:                        ; CD
 
        cmp     ebx, 4
        jb      .audio
        jz      .eject
        cmp     ebx, 5
        jnz     .ret
.load:
        call    .reserve
        call    LoadMedium
        ;call    .free
		jmp		.free
;        ret
.eject:
        call    .reserve
        call    clear_CD_cache
        call    allow_medium_removal
        call    EjectMedium
;        call    .free
		jmp		.free
;        ret
.audio:
     call  sys_cd_audio
     mov   [esp+36-4],eax
.ret:
     ret
 
.reserve:
        call    reserve_cd
        mov     eax, ecx
        shr     eax, 1
        and     eax, 1
        inc     eax
        mov     [ChannelNumber], ax
        mov     eax, ecx
        and     eax, 1
        mov     [DiskNumber], al
        call    reserve_cd_channel
        and     ebx, 3
        inc     ebx
        mov     [cdpos], ebx
        add     ebx, ebx
        mov     cl, 8
        sub     cl, bl
        mov     al, [DRIVE_DATA+1]
        shr     al, cl
        test    al, 2
        jz      .free;.err
        ret
.free:
        call    free_cd_channel
        and     [cd_status], 0
        ret
.err:
        call    .free
;        pop     eax
        ret
 
align 4
 
syscall_getpixel:                       ; GetPixel
     mov   ecx, [Screen_Max_X]
     inc   ecx
     xor   edx, edx
     mov   eax, ebx
     div   ecx
     mov   ebx, edx
     xchg  eax, ebx
     call  dword [GETPIXEL] ; eax - x, ebx - y
     mov   [esp + 32], ecx
     ret
 
align 4
 
syscall_getarea:
;eax = 36
;ebx = pointer to bufer for img BBGGRRBBGGRR...
;ecx = [size x]*65536 + [size y]
;edx = [start x]*65536 + [start y]
     pushad
         inc   [mouse_pause]
; Check of use of the hardware cursor.
      cmp  [_display.disable_mouse],__sys_disable_mouse
          jne  @f
; Since the test for the coordinates of the mouse should not be used,
; then use the call [disable_mouse] is not possible!
      cmp  dword [MOUSE_VISIBLE],dword 0
      jne  @f
      pushf
      cli
      call draw_mouse_under
      popf
      mov  [MOUSE_VISIBLE],dword 1
@@:
     mov   edi,ebx
     mov   eax,edx
     shr   eax,16
     mov   ebx,edx
     and   ebx,0xffff
     dec   eax
           dec   ebx
     ; eax - x, ebx - y
     mov   edx,ecx
     
     shr   ecx,16
     and   edx,0xffff
     mov   esi,ecx
     ; ecx - size x, edx - size y
         
         mov   ebp,edx
         dec   ebp
     lea   ebp,[ebp*3]
         
         imul  ebp,esi
         
         mov   esi,ecx
         dec   esi
         lea   esi,[esi*3]
         
     add   ebp,esi
     add   ebp,edi
 
     add   ebx,edx
         
.start_y:
     push  ecx edx
.start_x:
     push  eax ebx ecx
     add   eax,ecx
 
     call  dword [GETPIXEL] ; eax - x, ebx - y
     
     mov   [ebp],cx
     shr   ecx,16
     mov   [ebp+2],cl
 
     pop   ecx ebx eax
     sub   ebp,3
     dec   ecx
     jnz   .start_x
         pop   edx ecx
         dec   ebx
     dec   edx
     jnz   .start_y
     dec        [mouse_pause]
; Check of use of the hardware cursor.
      cmp  [_display.disable_mouse],__sys_disable_mouse
          jne  @f
         call  [draw_pointer]
@@:
     popad
     ret
 
align 4
 
syscall_drawline:                       ; DrawLine
 
        mov     edi, [TASK_BASE]
        movzx   eax, word[edi-twdw+WDATA.box.left]
        mov     ebp, eax
        mov     esi, [current_slot]
        add     ebp, [esi+APPDATA.wnd_clientbox.left]
        add     ax, word[esi+APPDATA.wnd_clientbox.left]
        add     ebp,ebx
        shl     eax, 16
        movzx   ebx, word[edi-twdw+WDATA.box.top]
        add     eax, ebp
        mov     ebp, ebx
        add     ebp, [esi+APPDATA.wnd_clientbox.top]
        add     bx, word[esi+APPDATA.wnd_clientbox.top]
        add     ebp, ecx
        shl     ebx, 16
        xor     edi, edi
        add     ebx, ebp
        mov     ecx, edx
        jmp     [draw_line]
 
align 4
 
syscall_getirqowner:                    ; GetIrqOwner
 
     cmp   ebx,16
     jae   .err
 
     cmp   [irq_rights + 4 * ebx], dword 2
     je    .err
 
     mov   eax,[4 * ebx + irq_owner]
     mov   [esp+32],eax
 
     ret
.err:
     or    dword [esp+32], -1
     ret
 
align 4
 
syscall_reserveportarea:                ; ReservePortArea and FreePortArea
 
     call  r_f_port_area
     mov   [esp+32],eax
     ret
 
align 4
 
syscall_threads:                        ; CreateThreads
 
     call  sys_threads
     mov   [esp+36],eax
     ret
 
align 4
 
stack_driver_stat:
 
     call  app_stack_handler            ; Stack status
 
;     mov   [check_idle_semaphore],5    ; enable these for zero delay
;     call  change_task                 ; between sent packet
 
     mov   [esp+36],eax
     ret
 
align 4
 
socket:                                 ; Socket interface
     call  app_socket_handler
 
;     mov   [check_idle_semaphore],5    ; enable these for zero delay
;     call  change_task                 ; between sent packet
 
     mov   [esp+36],eax
     mov   [esp+24],ebx
     ret
 
align 4
 
read_from_hd:                           ; Read from hd - fn not in use
 
     mov   edi,[TASK_BASE]
     add   edi,TASKDATA.mem_start
     add   eax,[edi]
     add   ecx,[edi]
     add   edx,[edi]
     call  file_read
 
     mov   [esp+36],eax
     mov   [esp+24],ebx
 
     ret
 
paleholder:
        ret
 
align 4
set_screen:
        cmp eax, [Screen_Max_X]
        jne .set
 
        cmp edx, [Screen_Max_Y]
        jne .set
        ret
.set:
        pushfd
        cli
 
        mov [Screen_Max_X], eax
        mov [Screen_Max_Y], edx
        mov [BytesPerScanLine], ecx
 
        mov [screen_workarea.right],eax
        mov [screen_workarea.bottom], edx
 
        push ebx
        push esi
        push edi
 
        pushad
 
        stdcall kernel_free, [_WinMapAddress]
 
        mov eax, [_display.width]
        mul [_display.height]
        mov [_WinMapSize], eax
 
        stdcall kernel_alloc, eax
        mov [_WinMapAddress], eax
        test eax, eax
        jz .epic_fail
 
        popad
 
        call    repos_windows
        xor eax, eax
        xor ebx, ebx
        mov     ecx, [Screen_Max_X]
        mov     edx, [Screen_Max_Y]
        call    calculatescreen
        pop edi
        pop esi
        pop ebx
 
        popfd
        ret
 
.epic_fail:
        hlt                     ; Houston, we've had a problem
 
; --------------- APM ---------------------
apm_entry    dp    0
apm_vf        dd    0
align 4
sys_apm:
    cmp    word [apm_vf], 0    ; Check APM BIOS enable
    jne    @f
    or     [esp + 48], byte 1    ; error
    mov    [esp + 36], dword 8    ; 32-bit protected-mode interface not supported
    ret
 
@@:
    xchg    eax, ecx
    xchg    ebx, ecx
 
    cmp    al, 3
    ja    @f
    and    [esp + 48], byte 0xfe    ; emulate func 0..3 as func 0
    mov    eax, [apm_vf]
    mov    [esp + 36], eax
    shr    eax, 16
    mov    [esp + 32], eax
    ret
 
@@:
 
    mov esi, [master_tab+(OS_BASE shr 20)]
    xchg [master_tab], esi
    push esi
    mov edi, cr3
    mov cr3, edi                 ;flush TLB
 
    call    pword [apm_entry]    ; call APM BIOS
 
    xchg eax, [esp]
    mov [master_tab], eax
    mov eax, cr3
    mov cr3, eax
    pop eax
 
    mov    [esp + 8 ], edi
    mov    [esp + 12], esi
    mov    [esp + 24], ebx
    mov    [esp + 28], edx
    mov    [esp + 32], ecx
    mov    [esp + 36], eax
    setc   al
    and    [esp + 48], byte 0xfe
    or     [esp + 48], al
 
 
    ret
; -----------------------------------------
 
align 4
 
undefined_syscall:                      ; Undefined system call
     mov   [esp + 32], dword -1
     ret
 
align 4
system_shutdown:          ; shut down the system
 
           cmp byte [BOOT_VAR+0x9030], 1
           jne @F
           ret
@@:
           call stop_all_services
           push 3                ; stop playing cd
           pop  eax
           call sys_cd_audio
 
yes_shutdown_param:
           cli
 
           mov  eax, kernel_file ; load kernel.mnt to 0x7000:0
           push 12
           pop  esi
           xor  ebx,ebx
           or   ecx,-1
           mov  edx, OS_BASE+0x70000
           call fileread
 
           mov  esi, restart_kernel_4000+OS_BASE+0x10000 ; move kernel re-starter to 0x4000:0
           mov  edi,OS_BASE+0x40000
           mov  ecx,1000
           rep  movsb
 
           mov  esi,OS_BASE+0x2F0000    ; restore 0x0 - 0xffff
           mov  edi, OS_BASE
           mov  ecx,0x10000/4
           cld
           rep movsd
 
           call restorefatchain
 
           mov al, 0xFF
           out 0x21, al
           out 0xA1, al
 
if 0
           mov  word [OS_BASE+0x467+0],pr_mode_exit
           mov  word [OS_BASE+0x467+2],0x1000
 
           mov  al,0x0F
           out  0x70,al
           mov  al,0x05
           out  0x71,al
 
           mov  al,0xFE
           out  0x64,al
 
           hlt
           jmp $-1
 
else
        cmp     byte [OS_BASE + 0x9030], 2
        jnz     no_acpi_power_off
 
; scan for RSDP
; 1) The first 1 Kb of the Extended BIOS Data Area (EBDA).
        movzx   eax, word [OS_BASE + 0x40E]
        shl     eax, 4
        jz      @f
        mov     ecx, 1024/16
        call    scan_rsdp
        jnc     .rsdp_found
@@:
; 2) The BIOS read-only memory space between 0E0000h and 0FFFFFh.
        mov     eax, 0xE0000
        mov     ecx, 0x2000
        call    scan_rsdp
        jc      no_acpi_power_off
.rsdp_found:
        mov     esi, [eax+16]   ; esi contains physical address of the RSDT
        mov     ebp, [ipc_tmp]
        stdcall map_page, ebp, esi, PG_MAP
        lea     eax, [esi+1000h]
        lea     edx, [ebp+1000h]
        stdcall map_page, edx, eax, PG_MAP
        and     esi, 0xFFF
        add     esi, ebp
        cmp     dword [esi], 'RSDT'
        jnz     no_acpi_power_off
        mov     ecx, [esi+4]
        sub     ecx, 24h
        jbe     no_acpi_power_off
        shr     ecx, 2
        add     esi, 24h
.scan_fadt:
        lodsd
        mov     ebx, eax
        lea     eax, [ebp+2000h]
        stdcall map_page, eax, ebx, PG_MAP
        lea     eax, [ebp+3000h]
        add     ebx, 0x1000
        stdcall map_page, eax, ebx, PG_MAP
        and     ebx, 0xFFF
        lea     ebx, [ebx+ebp+2000h]
        cmp     dword [ebx], 'FACP'
        jz      .fadt_found
        loop    .scan_fadt
        jmp     no_acpi_power_off
.fadt_found:
; ebx is linear address of FADT
        mov     edi, [ebx+40] ; physical address of the DSDT
        lea     eax, [ebp+4000h]
        stdcall map_page, eax, edi, PG_MAP
        lea     eax, [ebp+5000h]
        lea     esi, [edi+0x1000]
        stdcall map_page, eax, esi, PG_MAP
        and     esi, 0xFFF
        sub     edi, esi
        cmp     dword [esi+ebp+4000h], 'DSDT'
        jnz     no_acpi_power_off
        mov     eax, [esi+ebp+4004h] ; DSDT length
        sub     eax, 36+4
        jbe     no_acpi_power_off
        add     esi, 36
.scan_dsdt:
        cmp     dword [esi+ebp+4000h], '_S5_'
        jnz     .scan_dsdt_cont
        cmp     byte [esi+ebp+4000h+4], 12h ; DefPackage opcode
        jnz     .scan_dsdt_cont
        mov     dl, [esi+ebp+4000h+6]
        cmp     dl, 4 ; _S5_ package must contain 4 bytes
                      ; ...in theory; in practice, VirtualBox has 2 bytes
        ja      .scan_dsdt_cont
        cmp     dl, 1
        jb      .scan_dsdt_cont
        lea     esi, [esi+ebp+4000h+7]
        xor     ecx, ecx
        cmp     byte [esi], 0 ; 0 means zero byte, 0Ah xx means byte xx
        jz      @f
        cmp     byte [esi], 0xA
        jnz     no_acpi_power_off
        inc     esi
        mov     cl, [esi]
@@:
        inc     esi
        cmp     dl, 2
        jb      @f
        cmp     byte [esi], 0
        jz      @f
        cmp     byte [esi], 0xA
        jnz     no_acpi_power_off
        inc     esi
        mov     ch, [esi]
@@:
        jmp     do_acpi_power_off
.scan_dsdt_cont:
        inc     esi
        cmp     esi, 0x1000
        jb      @f
        sub     esi, 0x1000
        add     edi, 0x1000
        push    eax
        lea     eax, [ebp+4000h]
        stdcall map_page, eax, edi, PG_MAP
        push    PG_MAP
        lea     eax, [edi+1000h]
        push    eax
        lea     eax, [ebp+5000h]
        push    eax
        stdcall map_page
        pop     eax
@@:
        dec     eax
        jnz     .scan_dsdt
        jmp     no_acpi_power_off
do_acpi_power_off:
        mov     edx, [ebx+48]
        test    edx, edx
        jz      .nosmi
        mov     al, [ebx+52]
        out     dx, al
        mov     edx, [ebx+64]
@@:
        in      ax, dx
        test    al, 1
        jz      @b
.nosmi:
        and     cx, 0x0707
        shl     cx, 2
        or      cx, 0x2020
        mov     edx, [ebx+64]
        in      ax, dx
        and     ax, 203h
        or      ah, cl
        out     dx, ax
        mov     edx, [ebx+68]
        test    edx, edx
        jz      @f
        in      ax, dx
        and     ax, 203h
        or      ah, ch
        out     dx, ax
@@:
        jmp     $
 
 
no_acpi_power_off:
           mov  word [OS_BASE+0x467+0],pr_mode_exit
           mov  word [OS_BASE+0x467+2],0x1000
 
           mov  al,0x0F
           out  0x70,al
           mov  al,0x05
           out  0x71,al
 
           mov  al,0xFE
           out  0x64,al
 
           hlt
           jmp $-1
 
scan_rsdp:
        add     eax, OS_BASE
.s:
        cmp     dword [eax], 'RSD '
        jnz     .n
        cmp     dword [eax+4], 'PTR '
        jnz     .n
        xor     edx, edx
        xor     esi, esi
@@:
        add     dl, [eax+esi]
        inc     esi
        cmp     esi, 20
        jnz     @b
        test    dl, dl
        jz      .ok
.n:
        add     eax, 10h
        loop    .s
        stc
.ok:
        ret
end if
 
include "data32.inc"
 
__REV__ = __REV
 
uglobals_size = $ - endofcode
diff16 "end of kernel code",0,$

Rev 1310	Rev 1312
1	;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;	1	;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
2	;;	2	;;
3	;; Copyright (C) KolibriOS team 2004-2009. All rights reserved.	3	;; Copyright (C) KolibriOS team 2004-2009. All rights reserved.
4	;; PROGRAMMING:	4	;; PROGRAMMING:
5	;; Ivan Poddubny	5	;; Ivan Poddubny
6	;; Marat Zakiyanov (Mario79)	6	;; Marat Zakiyanov (Mario79)
7	;; VaStaNi	7	;; VaStaNi
8	;; Trans	8	;; Trans
9	;; Mihail Semenyako (mike.dld)	9	;; Mihail Semenyako (mike.dld)
10	;; Sergey Kuzmin (Wildwest)	10	;; Sergey Kuzmin (Wildwest)
11	;; Andrey Halyavin (halyavin)	11	;; Andrey Halyavin (halyavin)
12	;; Mihail Lisovin (Mihasik)	12	;; Mihail Lisovin (Mihasik)
13	;; Andrey Ignatiev (andrew_programmer)	13	;; Andrey Ignatiev (andrew_programmer)
14	;; NoName	14	;; NoName
15	;; Evgeny Grechnikov (Diamond)	15	;; Evgeny Grechnikov (Diamond)
16	;; Iliya Mihailov (Ghost)	16	;; Iliya Mihailov (Ghost)
17	;; Sergey Semyonov (Serge)	17	;; Sergey Semyonov (Serge)
18	;; Johnny_B	18	;; Johnny_B
19	;; SPraid (simba)	19	;; SPraid (simba)
20	;; Hidnplayr	20	;; Hidnplayr
21	;; Alexey Teplov ()	21	;; Alexey Teplov ()
22	;;	22	;;
23	;; Data in this file was originally part of MenuetOS project which is	23	;; Data in this file was originally part of MenuetOS project which is
24	;; distributed under the terms of GNU GPL. It is modified and redistributed as	24	;; distributed under the terms of GNU GPL. It is modified and redistributed as
25	;; part of KolibriOS project under the terms of GNU GPL.	25	;; part of KolibriOS project under the terms of GNU GPL.
26	;;	26	;;
27	;; Copyright (C) MenuetOS 2000-2004 Ville Mikael Turjanmaa	27	;; Copyright (C) MenuetOS 2000-2004 Ville Mikael Turjanmaa
28	;; PROGRAMMING:	28	;; PROGRAMMING:
29	;;	29	;;
30	;; Ville Mikael Turjanmaa, villemt@itu.jyu.fi	30	;; Ville Mikael Turjanmaa, villemt@itu.jyu.fi
31	;; - main os coding/design	31	;; - main os coding/design
32	;; Jan-Michael Brummer, BUZZ2@gmx.de	32	;; Jan-Michael Brummer, BUZZ2@gmx.de
33	;; Felix Kaiser, info@felix-kaiser.de	33	;; Felix Kaiser, info@felix-kaiser.de
34	;; Paolo Minazzi, paolo.minazzi@inwind.it	34	;; Paolo Minazzi, paolo.minazzi@inwind.it
35	;; quickcode@mail.ru	35	;; quickcode@mail.ru
36	;; Alexey, kgaz@crosswinds.net	36	;; Alexey, kgaz@crosswinds.net
37	;; Juan M. Caravaca, bitrider@wanadoo.es	37	;; Juan M. Caravaca, bitrider@wanadoo.es
38	;; kristol@nic.fi	38	;; kristol@nic.fi
39	;; Mike Hibbett, mikeh@oceanfree.net	39	;; Mike Hibbett, mikeh@oceanfree.net
40	;; Lasse Kuusijarvi, kuusijar@lut.fi	40	;; Lasse Kuusijarvi, kuusijar@lut.fi
41	;; Jarek Pelczar, jarekp3@wp.pl	41	;; Jarek Pelczar, jarekp3@wp.pl
42	;;	42	;;
43	;; KolibriOS is distributed in the hope that it will be useful, but WITHOUT ANY	43	;; KolibriOS is distributed in the hope that it will be useful, but WITHOUT ANY
44	;; WARRANTY. No author or distributor accepts responsibility to anyone for the	44	;; WARRANTY. No author or distributor accepts responsibility to anyone for the
45	;; consequences of using it or for whether it serves any particular purpose or	45	;; consequences of using it or for whether it serves any particular purpose or
46	;; works at all, unless he says so in writing. Refer to the GNU General Public	46	;; works at all, unless he says so in writing. Refer to the GNU General Public
47	;; License (the "GPL") for full details.	47	;; License (the "GPL") for full details.
48	;	48	;
49	;; Everyone is granted permission to copy, modify and redistribute KolibriOS,	49	;; Everyone is granted permission to copy, modify and redistribute KolibriOS,
50	;; but only under the conditions described in the GPL. A copy of this license	50	;; but only under the conditions described in the GPL. A copy of this license
51	;; is supposed to have been given to you along with KolibriOS so you can know	51	;; is supposed to have been given to you along with KolibriOS so you can know
52	;; your rights and responsibilities. It should be in a file named COPYING.	52	;; your rights and responsibilities. It should be in a file named COPYING.
53	;; Among other things, the copyright notice and this notice must be preserved	53	;; Among other things, the copyright notice and this notice must be preserved
54	;; on all copies.	54	;; on all copies.
55	;;	55	;;
56	;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;	56	;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
57		57
58	include 'macros.inc'	58	include 'macros.inc'
59		59
60	$Revision: 1310 $	60	$Revision: 1312 $
61		61
62		62
63	USE_COM_IRQ equ 1 ; make irq 3 and irq 4 available for PCI devices	63	USE_COM_IRQ equ 1 ; make irq 3 and irq 4 available for PCI devices
64		64
65	; Enabling the next line will enable serial output console	65	; Enabling the next line will enable serial output console
66	;debug_com_base equ 0x3f8 ; 0x3f8 is com1, 0x2f8 is com2, 0x3e8 is com3, 0x2e8 is com4, no irq's are used	66	;debug_com_base equ 0x3f8 ; 0x3f8 is com1, 0x2f8 is com2, 0x3e8 is com3, 0x2e8 is com4, no irq's are used
67		67
68	include "proc32.inc"	68	include "proc32.inc"
69	include "kglobals.inc"	69	include "kglobals.inc"
70	include "lang.inc"	70	include "lang.inc"
71		71
72	include "const.inc"	72	include "const.inc"
73	max_processes equ 255	73	max_processes equ 255
74	tss_step equ (128+8192) ; tss & i/o - 65535 ports, * 256=557056*4	74	tss_step equ (128+8192) ; tss & i/o - 65535 ports, * 256=557056*4
75		75
76		76
77	os_stack equ (os_data_l-gdts) ; GDTs	77	os_stack equ (os_data_l-gdts) ; GDTs
78	os_code equ (os_code_l-gdts)	78	os_code equ (os_code_l-gdts)
79	graph_data equ (3+graph_data_l-gdts)	79	graph_data equ (3+graph_data_l-gdts)
80	tss0 equ (tss0_l-gdts)	80	tss0 equ (tss0_l-gdts)
81	app_code equ (3+app_code_l-gdts)	81	app_code equ (3+app_code_l-gdts)
82	app_data equ (3+app_data_l-gdts)	82	app_data equ (3+app_data_l-gdts)
83	app_tls equ (3+tls_data_l-gdts)	83	app_tls equ (3+tls_data_l-gdts)
84	pci_code_sel equ (pci_code_32-gdts)	84	pci_code_sel equ (pci_code_32-gdts)
85	pci_data_sel equ (pci_data_32-gdts)	85	pci_data_sel equ (pci_data_32-gdts)
86		86
87		87
88	;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;	88	;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
89	;;	89	;;
90	;; Included files:	90	;; Included files:
91	;;	91	;;
92	;; Kernel16.inc	92	;; Kernel16.inc
93	;; - Booteng.inc English text for bootup	93	;; - Booteng.inc English text for bootup
94	;; - Bootcode.inc Hardware setup	94	;; - Bootcode.inc Hardware setup
95	;; - Pci16.inc PCI functions	95	;; - Pci16.inc PCI functions
96	;;	96	;;
97	;; Kernel32.inc	97	;; Kernel32.inc
98	;; - Sys32.inc Process management	98	;; - Sys32.inc Process management
99	;; - Shutdown.inc Shutdown and restart	99	;; - Shutdown.inc Shutdown and restart
100	;; - Fat32.inc Read / write hd	100	;; - Fat32.inc Read / write hd
101	;; - Vesa12.inc Vesa 1.2 driver	101	;; - Vesa12.inc Vesa 1.2 driver
102	;; - Vesa20.inc Vesa 2.0 driver	102	;; - Vesa20.inc Vesa 2.0 driver
103	;; - Vga.inc VGA driver	103	;; - Vga.inc VGA driver
104	;; - Stack.inc Network interface	104	;; - Stack.inc Network interface
105	;; - Mouse.inc Mouse pointer	105	;; - Mouse.inc Mouse pointer
106	;; - Scincode.inc Window skinning	106	;; - Scincode.inc Window skinning
107	;; - Pci32.inc PCI functions	107	;; - Pci32.inc PCI functions
108	;;	108	;;
109	;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;	109	;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
110		110
111		111
112	;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;	112	;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
113	;; ;;	113	;; ;;
114	;; 16 BIT ENTRY FROM BOOTSECTOR ;;	114	;; 16 BIT ENTRY FROM BOOTSECTOR ;;
115	;; ;;	115	;; ;;
116	;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;	116	;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
117		117
118	use16	118	use16
119	org 0x0	119	org 0x0
120	jmp start_of_code	120	jmp start_of_code
121		121
122	version db 'Kolibri OS version 0.7.5.0 ',13,10,13,10,0	122	version db 'Kolibri OS version 0.7.5.0 ',13,10,13,10,0
123		123
124	include "boot/bootstr.inc" ; language-independent boot messages	124	include "boot/bootstr.inc" ; language-independent boot messages
125	include "boot/preboot.inc"	125	include "boot/preboot.inc"
126		126
127	if lang eq en	127	if lang eq en
128	include "boot/booteng.inc" ; english system boot messages	128	include "boot/booteng.inc" ; english system boot messages
129	else if lang eq ru	129	else if lang eq ru
130	include "boot/bootru.inc" ; russian system boot messages	130	include "boot/bootru.inc" ; russian system boot messages
131	include "boot/ru.inc" ; Russian font	131	include "boot/ru.inc" ; Russian font
132	else if lang eq et	132	else if lang eq et
133	include "boot/bootet.inc" ; estonian system boot messages	133	include "boot/bootet.inc" ; estonian system boot messages
134	include "boot/et.inc" ; Estonian font	134	include "boot/et.inc" ; Estonian font
135	else	135	else
136	include "boot/bootge.inc" ; german system boot messages	136	include "boot/bootge.inc" ; german system boot messages
137	end if	137	end if
138		138
139	include "boot/bootcode.inc" ; 16 bit system boot code	139	include "boot/bootcode.inc" ; 16 bit system boot code
140	include "bus/pci/pci16.inc"	140	include "bus/pci/pci16.inc"
141	include "detect/biosdisk.inc"	141	include "detect/biosdisk.inc"
142		142
143	;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;	143	;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
144	;; ;;	144	;; ;;
145	;; SWITCH TO 32 BIT PROTECTED MODE ;;	145	;; SWITCH TO 32 BIT PROTECTED MODE ;;
146	;; ;;	146	;; ;;
147	;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;	147	;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
148		148
149		149
150	; CR0 Flags - Protected mode and Paging	150	; CR0 Flags - Protected mode and Paging
151		151
152	mov ecx, CR0_PE	152	mov ecx, CR0_PE
153		153
154	; Enabling 32 bit protected mode	154	; Enabling 32 bit protected mode
155		155
156	sidt [cs:old_ints_h]	156	sidt [cs:old_ints_h]
157		157
158	cli ; disable all irqs	158	cli ; disable all irqs
159	cld	159	cld
160	mov al,255 ; mask all irqs	160	mov al,255 ; mask all irqs
161	out 0xa1,al	161	out 0xa1,al
162	out 0x21,al	162	out 0x21,al
163	l.5: in al, 0x64 ; Enable A20	163	l.5: in al, 0x64 ; Enable A20
164	test al, 2	164	test al, 2
165	jnz l.5	165	jnz l.5
166	mov al, 0xD1	166	mov al, 0xD1
167	out 0x64, al	167	out 0x64, al
168	l.6: in al, 0x64	168	l.6: in al, 0x64
169	test al, 2	169	test al, 2
170	jnz l.6	170	jnz l.6
171	mov al, 0xDF	171	mov al, 0xDF
172	out 0x60, al	172	out 0x60, al
173	l.7: in al, 0x64	173	l.7: in al, 0x64
174	test al, 2	174	test al, 2
175	jnz l.7	175	jnz l.7
176	mov al, 0xFF	176	mov al, 0xFF
177	out 0x64, al	177	out 0x64, al
178		178
179	lgdt [cs:tmp_gdt] ; Load GDT	179	lgdt [cs:tmp_gdt] ; Load GDT
180	mov eax, cr0 ; protected mode	180	mov eax, cr0 ; protected mode
181	or eax, ecx	181	or eax, ecx
182	and eax, 10011111b 65536256 + 0xffffff ; caching enabled	182	and eax, 10011111b 65536256 + 0xffffff ; caching enabled
183	mov cr0, eax	183	mov cr0, eax
184	jmp pword os_code:B32 ; jmp to enable 32 bit mode	184	jmp pword os_code:B32 ; jmp to enable 32 bit mode
185		185
186	align 8	186	align 8
187	tmp_gdt:	187	tmp_gdt:
188		188
189	dw 23	189	dw 23
190	dd tmp_gdt+0x10000	190	dd tmp_gdt+0x10000
191	dw 0	191	dw 0
192		192
193	dw 0xffff	193	dw 0xffff
194	dw 0x0000	194	dw 0x0000
195	db 0x00	195	db 0x00
196	dw 11011111b *256 +10011010b	196	dw 11011111b *256 +10011010b
197	db 0x00	197	db 0x00
198		198
199	dw 0xffff	199	dw 0xffff
200	dw 0x0000	200	dw 0x0000
201	db 0x00	201	db 0x00
202	dw 11011111b *256 +10010010b	202	dw 11011111b *256 +10010010b
203	db 0x00	203	db 0x00
204		204
205	include "data16.inc"	205	include "data16.inc"
206		206
207	use32	207	use32
208	org $+0x10000	208	org $+0x10000
209		209
210	align 4	210	align 4
211	B32:	211	B32:
212	mov ax,os_stack ; Selector for os	212	mov ax,os_stack ; Selector for os
213	mov ds,ax	213	mov ds,ax
214	mov es,ax	214	mov es,ax
215	mov fs,ax	215	mov fs,ax
216	mov gs,ax	216	mov gs,ax
217	mov ss,ax	217	mov ss,ax
218	mov esp,0x3ec00 ; Set stack	218	mov esp,0x3ec00 ; Set stack
219		219
220	; CLEAR 0x280000 - HEAP_BASE	220	; CLEAR 0x280000 - HEAP_BASE
221		221
222	xor eax,eax	222	xor eax,eax
223	mov edi,0x280000	223	mov edi,0x280000
224	mov ecx,(HEAP_BASE-OS_BASE-0x280000) / 4	224	mov ecx,(HEAP_BASE-OS_BASE-0x280000) / 4
225	cld	225	cld
226	rep stosd	226	rep stosd
227		227
228	mov edi,0x40000	228	mov edi,0x40000
229	mov ecx,(0x90000-0x40000)/4	229	mov ecx,(0x90000-0x40000)/4
230	rep stosd	230	rep stosd
231		231
232	; CLEAR KERNEL UNDEFINED GLOBALS	232	; CLEAR KERNEL UNDEFINED GLOBALS
233	mov edi, endofcode-OS_BASE	233	mov edi, endofcode-OS_BASE
234	mov ecx, (uglobals_size/4)+4	234	mov ecx, (uglobals_size/4)+4
235	rep stosd	235	rep stosd
236		236
237	; SAVE & CLEAR 0-0xffff	237	; SAVE & CLEAR 0-0xffff
238		238
239	xor esi, esi	239	xor esi, esi
240	mov edi,0x2F0000	240	mov edi,0x2F0000
241	mov ecx,0x10000 / 4	241	mov ecx,0x10000 / 4
242	rep movsd	242	rep movsd
243	mov edi,0x1000	243	mov edi,0x1000
244	mov ecx,0xf000 / 4	244	mov ecx,0xf000 / 4
245	rep stosd	245	rep stosd
246		246
247	call test_cpu	247	call test_cpu
248	bts [cpu_caps-OS_BASE], CAPS_TSC ;force use rdtsc	248	bts [cpu_caps-OS_BASE], CAPS_TSC ;force use rdtsc
249		249
250	call init_BIOS32	250	call init_BIOS32
251	; MEMORY MODEL	251	; MEMORY MODEL
252	call mem_test	252	call mem_test
253	call init_mem	253	call init_mem
254	call init_page_map	254	call init_page_map
255		255
256	; ENABLE PAGING	256	; ENABLE PAGING
257		257
258	mov eax, sys_pgdir-OS_BASE	258	mov eax, sys_pgdir-OS_BASE
259	mov cr3, eax	259	mov cr3, eax
260		260
261	mov eax,cr0	261	mov eax,cr0
262	or eax,CR0_PG+CR0_WP	262	or eax,CR0_PG+CR0_WP
263	mov cr0,eax	263	mov cr0,eax
264		264
265	lgdt [gdts]	265	lgdt [gdts]
266	jmp pword os_code:high_code	266	jmp pword os_code:high_code
267		267
268	align 4	268	align 4
269	bios32_entry dd ?	269	bios32_entry dd ?
270	tmp_page_tabs dd ?	270	tmp_page_tabs dd ?
271		271
272	use16	272	use16
273	org $-0x10000	273	org $-0x10000
274	include "boot/shutdown.inc" ; shutdown or restart	274	include "boot/shutdown.inc" ; shutdown or restart
275	org $+0x10000	275	org $+0x10000
276	use32	276	use32
277		277
278	__DEBUG__ fix 1	278	__DEBUG__ fix 1
279	__DEBUG_LEVEL__ fix 1	279	__DEBUG_LEVEL__ fix 1
280	include 'init.inc'	280	include 'init.inc'
281		281
282	org OS_BASE+$	282	org OS_BASE+$
283		283
284	align 4	284	align 4
285	high_code:	285	high_code:
286	mov ax, os_stack	286	mov ax, os_stack
287	mov bx, app_data	287	mov bx, app_data
288	mov cx, app_tls	288	mov cx, app_tls
289	mov ss, ax	289	mov ss, ax
290	add esp, OS_BASE	290	add esp, OS_BASE
291		291
292	mov ds, bx	292	mov ds, bx
293	mov es, bx	293	mov es, bx
294	mov fs, cx	294	mov fs, cx
295	mov gs, bx	295	mov gs, bx
296		296
297	bt [cpu_caps], CAPS_PGE	297	bt [cpu_caps], CAPS_PGE
298	jnc @F	298	jnc @F
299		299
300	or dword [sys_pgdir+(OS_BASE shr 20)], PG_GLOBAL	300	or dword [sys_pgdir+(OS_BASE shr 20)], PG_GLOBAL
301		301
302	mov ebx, cr4	302	mov ebx, cr4
303	or ebx, CR4_PGE	303	or ebx, CR4_PGE
304	mov cr4, ebx	304	mov cr4, ebx
305	@@:	305	@@:
306	xor eax, eax	306	xor eax, eax
307	mov dword [sys_pgdir], eax	307	mov dword [sys_pgdir], eax
308	mov dword [sys_pgdir+4], eax	308	mov dword [sys_pgdir+4], eax
309		309
310	mov eax, cr3	310	mov eax, cr3
311	mov cr3, eax ; flush TLB	311	mov cr3, eax ; flush TLB
312		312
313	; SAVE REAL MODE VARIABLES	313	; SAVE REAL MODE VARIABLES
314	mov ax, [BOOT_VAR + 0x9031]	314	mov ax, [BOOT_VAR + 0x9031]
315	mov [IDEContrRegsBaseAddr], ax	315	mov [IDEContrRegsBaseAddr], ax
316	; --------------- APM ---------------------	316	; --------------- APM ---------------------
317		317
318	; init selectors	318	; init selectors
319	mov ebx,[BOOT_VAR+0x9040] ; offset of APM entry point	319	mov ebx,[BOOT_VAR+0x9040] ; offset of APM entry point
320	movzx eax,word [BOOT_VAR+0x9050] ; real-mode segment base address of	320	movzx eax,word [BOOT_VAR+0x9050] ; real-mode segment base address of
321	; protected-mode 32-bit code segment	321	; protected-mode 32-bit code segment
322	movzx ecx,word [BOOT_VAR+0x9052] ; real-mode segment base address of	322	movzx ecx,word [BOOT_VAR+0x9052] ; real-mode segment base address of
323	; protected-mode 16-bit code segment	323	; protected-mode 16-bit code segment
324	movzx edx,word [BOOT_VAR+0x9054] ; real-mode segment base address of	324	movzx edx,word [BOOT_VAR+0x9054] ; real-mode segment base address of
325	; protected-mode 16-bit data segment	325	; protected-mode 16-bit data segment
326		326
327	shl eax, 4	327	shl eax, 4
328	mov [dword apm_code_32 + 2], ax	328	mov [dword apm_code_32 + 2], ax
329	shr eax, 16	329	shr eax, 16
330	mov [dword apm_code_32 + 4], al	330	mov [dword apm_code_32 + 4], al
331		331
332	shl ecx, 4	332	shl ecx, 4
333	mov [dword apm_code_16 + 2], cx	333	mov [dword apm_code_16 + 2], cx
334	shr ecx, 16	334	shr ecx, 16
335	mov [dword apm_code_16 + 4], cl	335	mov [dword apm_code_16 + 4], cl
336		336
337	shl edx, 4	337	shl edx, 4
338	mov [dword apm_data_16 + 2], dx	338	mov [dword apm_data_16 + 2], dx
339	shr edx, 16	339	shr edx, 16
340	mov [dword apm_data_16 + 4], dl	340	mov [dword apm_data_16 + 4], dl
341		341
342	mov dword[apm_entry], ebx	342	mov dword[apm_entry], ebx
343	mov word [apm_entry + 4], apm_code_32 - gdts	343	mov word [apm_entry + 4], apm_code_32 - gdts
344		344
345	mov eax, [BOOT_VAR + 0x9044] ; version & flags	345	mov eax, [BOOT_VAR + 0x9044] ; version & flags
346	mov [apm_vf], eax	346	mov [apm_vf], eax
347	; -----------------------------------------	347	; -----------------------------------------
348	; movzx eax,byte [BOOT_VAR+0x9010] ; mouse port	348	; movzx eax,byte [BOOT_VAR+0x9010] ; mouse port
349	; mov [0xF604],byte 1 ;al	349	; mov [0xF604],byte 1 ;al
350	mov al, [BOOT_VAR+0x901F] ; DMA access	350	mov al, [BOOT_VAR+0x901F] ; DMA access
351	mov [allow_dma_access], al	351	mov [allow_dma_access], al
352	movzx eax, byte [BOOT_VAR+0x9000] ; bpp	352	movzx eax, byte [BOOT_VAR+0x9000] ; bpp
353	mov [ScreenBPP],al	353	mov [ScreenBPP],al
354		354
355	mov [_display.bpp], eax	355	mov [_display.bpp], eax
356	mov [_display.vrefresh], 60	356	mov [_display.vrefresh], 60
357	mov [_display.disable_mouse], __sys_disable_mouse	357	mov [_display.disable_mouse], __sys_disable_mouse
358		358
359	movzx eax,word [BOOT_VAR+0x900A] ; X max	359	movzx eax,word [BOOT_VAR+0x900A] ; X max
360	mov [_display.width], eax	360	mov [_display.width], eax
361	dec eax	361	dec eax
362	mov [Screen_Max_X],eax	362	mov [Screen_Max_X],eax
363	mov [screen_workarea.right],eax	363	mov [screen_workarea.right],eax
364	movzx eax,word [BOOT_VAR+0x900C] ; Y max	364	movzx eax,word [BOOT_VAR+0x900C] ; Y max
365	mov [_display.height], eax	365	mov [_display.height], eax
366	dec eax	366	dec eax
367	mov [Screen_Max_Y],eax	367	mov [Screen_Max_Y],eax
368	mov [screen_workarea.bottom],eax	368	mov [screen_workarea.bottom],eax
369	movzx eax,word [BOOT_VAR+0x9008] ; screen mode	369	movzx eax,word [BOOT_VAR+0x9008] ; screen mode
370	mov [SCR_MODE],eax	370	mov [SCR_MODE],eax
371	mov eax,[BOOT_VAR+0x9014] ; Vesa 1.2 bnk sw add	371	mov eax,[BOOT_VAR+0x9014] ; Vesa 1.2 bnk sw add
372	mov [BANK_SWITCH],eax	372	mov [BANK_SWITCH],eax
373	mov [BytesPerScanLine],word 640*4 ; Bytes PerScanLine	373	mov [BytesPerScanLine],word 640*4 ; Bytes PerScanLine
374	cmp [SCR_MODE],word 0x13 ; 320x200	374	cmp [SCR_MODE],word 0x13 ; 320x200
375	je @f	375	je @f
376	cmp [SCR_MODE],word 0x12 ; VGA 640x480	376	cmp [SCR_MODE],word 0x12 ; VGA 640x480
377	je @f	377	je @f
378	movzx eax, word[BOOT_VAR+0x9001] ; for other modes	378	movzx eax, word[BOOT_VAR+0x9001] ; for other modes
379	mov [BytesPerScanLine],ax	379	mov [BytesPerScanLine],ax
380	mov [_display.pitch], eax	380	mov [_display.pitch], eax
381	@@:	381	@@:
382	mov eax, [_display.width]	382	mov eax, [_display.width]
383	mul [_display.height]	383	mul [_display.height]
384	mov [_WinMapSize], eax	384	mov [_WinMapSize], eax
385		385
386	mov esi, BOOT_VAR+0x9080	386	mov esi, BOOT_VAR+0x9080
387	movzx ecx, byte [esi-1]	387	movzx ecx, byte [esi-1]
388	mov [NumBiosDisks], ecx	388	mov [NumBiosDisks], ecx
389	mov edi, BiosDisksData	389	mov edi, BiosDisksData
390	rep movsd	390	rep movsd
391		391
392	; GRAPHICS ADDRESSES	392	; GRAPHICS ADDRESSES
393		393
394	and byte [BOOT_VAR+0x901e],0x0	394	and byte [BOOT_VAR+0x901e],0x0
395	mov eax,[BOOT_VAR+0x9018]	395	mov eax,[BOOT_VAR+0x9018]
396	mov [LFBAddress],eax	396	mov [LFBAddress],eax
397		397
398	cmp [SCR_MODE],word 0100000000000000b	398	cmp [SCR_MODE],word 0100000000000000b
399	jge setvesa20	399	jge setvesa20
400	cmp [SCR_MODE],word 0x13	400	cmp [SCR_MODE],word 0x13
401	je v20ga32	401	je v20ga32
402	mov [PUTPIXEL],dword Vesa12_putpixel24 ; Vesa 1.2	402	mov [PUTPIXEL],dword Vesa12_putpixel24 ; Vesa 1.2
403	mov [GETPIXEL],dword Vesa12_getpixel24	403	mov [GETPIXEL],dword Vesa12_getpixel24
404	cmp [ScreenBPP],byte 24	404	cmp [ScreenBPP],byte 24
405	jz ga24	405	jz ga24
406	mov [PUTPIXEL],dword Vesa12_putpixel32	406	mov [PUTPIXEL],dword Vesa12_putpixel32
407	mov [GETPIXEL],dword Vesa12_getpixel32	407	mov [GETPIXEL],dword Vesa12_getpixel32
408	ga24:	408	ga24:
409	jmp v20ga24	409	jmp v20ga24
410	setvesa20:	410	setvesa20:
411	mov [PUTPIXEL],dword Vesa20_putpixel24 ; Vesa 2.0	411	mov [PUTPIXEL],dword Vesa20_putpixel24 ; Vesa 2.0
412	mov [GETPIXEL],dword Vesa20_getpixel24	412	mov [GETPIXEL],dword Vesa20_getpixel24
413	cmp [ScreenBPP],byte 24	413	cmp [ScreenBPP],byte 24
414	jz v20ga24	414	jz v20ga24
415	v20ga32:	415	v20ga32:
416	mov [PUTPIXEL],dword Vesa20_putpixel32	416	mov [PUTPIXEL],dword Vesa20_putpixel32
417	mov [GETPIXEL],dword Vesa20_getpixel32	417	mov [GETPIXEL],dword Vesa20_getpixel32
418	v20ga24:	418	v20ga24:
419	cmp [SCR_MODE],word 0x12 ; 16 C VGA 640x480	419	cmp [SCR_MODE],word 0x12 ; 16 C VGA 640x480
420	jne no_mode_0x12	420	jne no_mode_0x12
421	mov [PUTPIXEL],dword VGA_putpixel	421	mov [PUTPIXEL],dword VGA_putpixel
422	mov [GETPIXEL],dword Vesa20_getpixel32	422	mov [GETPIXEL],dword Vesa20_getpixel32
423	no_mode_0x12:	423	no_mode_0x12:
424		424
425	; -------- Fast System Call init ----------	425	; -------- Fast System Call init ----------
426	; Intel SYSENTER/SYSEXIT (AMD CPU support it too)	426	; Intel SYSENTER/SYSEXIT (AMD CPU support it too)
427	bt [cpu_caps], CAPS_SEP	427	bt [cpu_caps], CAPS_SEP
428	jnc .SEnP ; SysEnter not Present	428	jnc .SEnP ; SysEnter not Present
429	xor edx, edx	429	xor edx, edx
430	mov ecx, MSR_SYSENTER_CS	430	mov ecx, MSR_SYSENTER_CS
431	mov eax, os_code	431	mov eax, os_code
432	wrmsr	432	wrmsr
433	mov ecx, MSR_SYSENTER_ESP	433	mov ecx, MSR_SYSENTER_ESP
434	; mov eax, sysenter_stack ; Check it	434	; mov eax, sysenter_stack ; Check it
435	xor eax, eax	435	xor eax, eax
436	wrmsr	436	wrmsr
437	mov ecx, MSR_SYSENTER_EIP	437	mov ecx, MSR_SYSENTER_EIP
438	mov eax, sysenter_entry	438	mov eax, sysenter_entry
439	wrmsr	439	wrmsr
440	.SEnP:	440	.SEnP:
441	; AMD SYSCALL/SYSRET	441	; AMD SYSCALL/SYSRET
442	cmp byte[cpu_vendor], 'A'	442	cmp byte[cpu_vendor], 'A'
443	jne .noSYSCALL	443	jne .noSYSCALL
444	mov eax, 0x80000001	444	mov eax, 0x80000001
445	cpuid	445	cpuid
446	test edx, 0x800 ; bit_11 - SYSCALL/SYSRET support	446	test edx, 0x800 ; bit_11 - SYSCALL/SYSRET support
447	jz .noSYSCALL	447	jz .noSYSCALL
448	mov ecx, MSR_AMD_EFER	448	mov ecx, MSR_AMD_EFER
449	rdmsr	449	rdmsr
450	or eax, 1 ; bit_0 - System Call Extension (SCE)	450	or eax, 1 ; bit_0 - System Call Extension (SCE)
451	wrmsr	451	wrmsr
452		452
453	; !!!! It`s dirty hack, fix it !!!	453	; !!!! It`s dirty hack, fix it !!!
454	; Bits of EDX :	454	; Bits of EDX :
455	; Bit 3116 During the SYSRET instruction, this field is copied into the CS register	455	; Bit 3116 During the SYSRET instruction, this field is copied into the CS register
456	; and the contents of this field, plus 8, are copied into the SS register.	456	; and the contents of this field, plus 8, are copied into the SS register.
457	; Bit 150 During the SYSCALL instruction, this field is copied into the CS register	457	; Bit 150 During the SYSCALL instruction, this field is copied into the CS register
458	; and the contents of this field, plus 8, are copied into the SS register.	458	; and the contents of this field, plus 8, are copied into the SS register.
459		459
460	; mov edx, (os_code + 16) * 65536 + os_code	460	; mov edx, (os_code + 16) * 65536 + os_code
461	mov edx, 0x1B0008	461	mov edx, 0x1B0008
462		462
463	mov eax, syscall_entry	463	mov eax, syscall_entry
464	mov ecx, MSR_AMD_STAR	464	mov ecx, MSR_AMD_STAR
465	wrmsr	465	wrmsr
466	.noSYSCALL:	466	.noSYSCALL:
467	; -----------------------------------------	467	; -----------------------------------------
468	stdcall alloc_page	468	stdcall alloc_page
469	stdcall map_page, tss-0xF80, eax, PG_SW	469	stdcall map_page, tss-0xF80, eax, PG_SW
470	stdcall alloc_page	470	stdcall alloc_page
471	inc eax	471	inc eax
472	mov [SLOT_BASE+256+APPDATA.io_map], eax	472	mov [SLOT_BASE+256+APPDATA.io_map], eax
473	stdcall map_page, tss+0x80, eax, PG_SW	473	stdcall map_page, tss+0x80, eax, PG_SW
474	stdcall alloc_page	474	stdcall alloc_page
475	inc eax	475	inc eax
476	mov dword [SLOT_BASE+256+APPDATA.io_map+4], eax	476	mov dword [SLOT_BASE+256+APPDATA.io_map+4], eax
477	stdcall map_page, tss+0x1080, eax, PG_SW	477	stdcall map_page, tss+0x1080, eax, PG_SW
478		478
479	; LOAD IDT	479	; LOAD IDT
480		480
481	call build_interrupt_table ;lidt is executed	481	call build_interrupt_table ;lidt is executed
482	;lidt [idtreg]	482	;lidt [idtreg]
483		483
484	call init_kernel_heap	484	call init_kernel_heap
485	stdcall kernel_alloc, RING0_STACK_SIZE+512	485	stdcall kernel_alloc, RING0_STACK_SIZE+512
486	mov [os_stack_seg], eax	486	mov [os_stack_seg], eax
487		487
488	lea esp, [eax+RING0_STACK_SIZE]	488	lea esp, [eax+RING0_STACK_SIZE]
489		489
490	mov [tss._ss0], os_stack	490	mov [tss._ss0], os_stack
491	mov [tss._esp0], esp	491	mov [tss._esp0], esp
492	mov [tss._esp], esp	492	mov [tss._esp], esp
493	mov [tss._cs],os_code	493	mov [tss._cs],os_code
494	mov [tss._ss],os_stack	494	mov [tss._ss],os_stack
495	mov [tss._ds],app_data	495	mov [tss._ds],app_data
496	mov [tss._es],app_data	496	mov [tss._es],app_data
497	mov [tss._fs],app_data	497	mov [tss._fs],app_data
498	mov [tss._gs],app_data	498	mov [tss._gs],app_data
499	mov [tss._io],128	499	mov [tss._io],128
500	;Add IO access table - bit array of permitted ports	500	;Add IO access table - bit array of permitted ports

Subversion Repositories Kolibri OS

(root)/kernel/trunk/kernel.asm @ 1316 – Rev 1310 → 1312