;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;
;; Copyright (C) KolibriOS team 2004-2015. 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 (<Lrz>)
;; Rus
;; Nable
;; shurf
;; Alver
;; Maxis
;; Galkov
;; CleverMouse
;; tsdima
;; turbanoff
;; Asper
;; art_zh
;;
;; 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.
;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

format binary as "mnt"

include 'macros.inc'
include 'struct.inc'

$Revision$


USE_COM_IRQ     equ 1      ; make irq 3 and irq 4 available for PCI devices
VESA_1_2_VIDEO  equ 0      ; enable vesa 1.2 bank switch functions

; 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 "encoding.inc"

include "const.inc"

iglobal
; The following variable, if equal to 1, duplicates debug output to the screen.
debug_direct_print db 0
; Start the first app (LAUNCHER) after kernel is loaded? (1=yes, 2 or 0=no)
launcher_start db 1
endg

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

if lang eq sp
include "kernelsp.inc"  ; spanish kernel messages
else if lang eq et
version db    'Kolibri OS  versioon 0.7.7.0+    ',13,10,13,10,0
else
version db    'Kolibri OS  version 0.7.7.0+     ',13,10,13,10,0
end if

include "boot/bootstr.inc"     ; language-independent boot messages
include "boot/preboot.inc"

if lang eq ge
include "boot/bootge.inc"     ; german system boot messages
else if lang eq sp
include "boot/bootsp.inc"     ; spanish 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/booten.inc"      ; english 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"

if ~ lang eq sp
diff16 "end of bootcode",0,$+0x10000
end if

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, TMP_STACK_TOP       ; Set stack

; CLEAR 0x280000 - HEAP_BASE

        xor     eax, eax
        mov     edi, CLEAN_ZONE
        mov     ecx, (HEAP_BASE-OS_BASE-CLEAN_ZONE) / 4
        cld
        rep stosd

; CLEAR KERNEL UNDEFINED GLOBALS
        mov     edi, endofcode-OS_BASE
        mov     ecx, 0x90000
        sub     ecx, edi
        shr     ecx, 2
        rep stosd

; SAVE & CLEAR 0-0xffff

        mov     edi, 0x1000
        mov     ecx, 0x8000 / 4
        rep stosd
        mov     edi, 0xa000
        mov     ecx, 0x6000 / 4
        rep stosd

        call    test_cpu
        bts     [cpu_caps-OS_BASE], CAPS_TSC    ;force use rdtsc

        call    check_acpi
        call    init_hpet
        call    init_BIOS32
; MEMORY MODEL
        call    mem_test
        call    init_mem
        call    init_page_map

; ENABLE PAGING

        mov     eax, sys_proc-OS_BASE+PROC.pdt_0
        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

ap_init16:
        cli
        lgdt    [cs:gdts_ap-ap_init16]
        mov     eax, [cs:cr3_ap-ap_init16]
        mov     cr3, eax
        mov     eax, [cs:cr4_ap-ap_init16]
        mov     cr4, eax
        mov     eax, CR0_PE+CR0_PG+CR0_WP
        mov     cr0, eax
        jmp     pword os_code:ap_init_high
align 16
gdts_ap:
        dw     gdte-gdts-1
        dd     gdts
        dw     0
cr3_ap  dd     ?
cr4_ap  dd     ?
ap_init16_size = $ - ap_init16
use32

__DEBUG__ fix 1
__DEBUG_LEVEL__ fix 1
include 'init.inc'

org OS_BASE+$

include 'fdo.inc'

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

        xor     eax, eax
        mov     ebx, 0xFFFFF000+PG_SHARED+PG_NOCACHE+PG_UWR
        bt      [cpu_caps], CAPS_PAT
        setc    al
        shl     eax, 7
        or      ebx, eax

        mov     eax, PG_GLOBAL
        bt      [cpu_caps], CAPS_PGE
        jnc     @F

        or      [sys_proc+PROC.pdt_0+(OS_BASE shr 20)], eax
        or      ebx, eax

        mov     eax, cr4
        or      eax, CR4_PGE
        mov     cr4, eax
@@:
        mov     [pte_valid_mask], ebx

        xor     eax, eax
        mov     dword [sys_proc+PROC.pdt_0], eax
        mov     dword [sys_proc+PROC.pdt_0+4], eax

        mov     eax, cr3
        mov     cr3, eax          ; flush TLB

        mov     ecx, pg_data.mutex
        call    mutex_init

        mov     ecx, disk_list_mutex
        call    mutex_init

        mov     ecx, keyboard_list_mutex
        call    mutex_init

        mov     ecx, unpack_mutex
        call    mutex_init

        mov     ecx, application_table_mutex
        call    mutex_init

        mov     ecx, ide_mutex
        call    mutex_init
        mov     ecx, ide_channel1_mutex
        call    mutex_init
        mov     ecx, ide_channel2_mutex
        call    mutex_init
        mov     ecx, ide_channel3_mutex
        call    mutex_init
        mov     ecx, ide_channel4_mutex
        call    mutex_init
        mov     ecx, ide_channel5_mutex
        call    mutex_init
        mov     ecx, ide_channel6_mutex
        call    mutex_init
;-----------------------------------------------------------------------------
; SAVE REAL MODE VARIABLES
;-----------------------------------------------------------------------------
; --------------- APM ---------------------

; init selectors
        mov     ebx, [BOOT_VARS+BOOT_APM_ENTRY]        ; offset of APM entry point
        movzx   eax, word [BOOT_VARS+BOOT_APM_CODE_32] ; real-mode segment base address of
                                                                                ; protected-mode 32-bit code segment
        movzx   ecx, word [BOOT_VARS+BOOT_APM_CODE_16]; real-mode segment base address of
                                                                                ; protected-mode 16-bit code segment
        movzx   edx, word [BOOT_VARS+BOOT_APM_DATA_16]; 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_VARS + BOOT_APM_VERSION] ; version & flags
        mov     [apm_vf], eax
; -----------------------------------------
        mov     al, [BOOT_VARS+BOOT_DMA]            ; DMA access
        mov     [allow_dma_access], al
        movzx   eax, byte [BOOT_VARS+BOOT_BPP]      ; bpp
        mov     [_display.bits_per_pixel], eax
        mov     [_display.vrefresh], 60
        mov     al, [BOOT_VARS+BOOT_DEBUG_PRINT]    ; If nonzero, duplicates debug output to the screen
        mov     [debug_direct_print], al
        mov     al, [BOOT_VARS+BOOT_LAUNCHER_START] ; Start the first app (LAUNCHER) after kernel is loaded?
        mov     [launcher_start], al
        movzx   eax, word [BOOT_VARS+BOOT_X_RES]; X max
        mov     [_display.width], eax
        mov     [display_width_standard], eax
        dec     eax
        mov     [screen_workarea.right], eax
        movzx   eax, word [BOOT_VARS+BOOT_Y_RES]; Y max
        mov     [_display.height], eax
        mov     [display_height_standard], eax
        dec     eax
        mov     [screen_workarea.bottom], eax
        movzx   eax, word [BOOT_VARS+BOOT_VESA_MODE] ; screen mode
        mov     dword [SCR_MODE], eax
;        mov     eax, [BOOT_VAR+0x9014]             ; Vesa 1.2 bnk sw add
;        mov     [BANK_SWITCH], eax
        mov     eax, 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_VARS+BOOT_PITCH]      ; for other modes
@@:
        mov     [_display.lfb_pitch], eax
        mov     eax, [_display.width]
        mul     [_display.height]
        mov     [_display.win_map_size], eax

        call    calculate_fast_getting_offset_for_WinMapAddress
; for Qemu or non standart video cards
; Unfortunately [BytesPerScanLine] does not always
;                             equal to [_display.width] * [ScreenBPP] / 8
        call    calculate_fast_getting_offset_for_LFB

        mov     esi, BOOT_VARS+0x9080
        movzx   ecx, byte [esi-1]
        mov     [NumBiosDisks], ecx
        mov     edi, BiosDisksData
        rep movsd

setvideomode:

        mov     eax, [BOOT_VARS+BOOT_LFB]
        mov     [LFBAddress], eax

        cmp     word [SCR_MODE], 0x0012                 ; VGA (640x480 16 colors)
        je      .vga
        cmp     word [SCR_MODE], 0x0013                 ; MCGA (320*200 256 colors)
        je      .32bpp
        cmp     byte [_display.bits_per_pixel], 32
        je      .32bpp
        cmp     byte [_display.bits_per_pixel], 24
        je      .24bpp
        cmp     byte [_display.bits_per_pixel], 16
        je      .16bpp
;        cmp     byte [_display.bits_per_pixel], 15
;        je      .15bpp

  .vga:
        mov     [PUTPIXEL], VGA_putpixel
        mov     [GETPIXEL], Vesa20_getpixel32           ; Conversion buffer is 32 bpp
        mov     [_display.bytes_per_pixel], 4           ; Conversion buffer is 32 bpp
        jmp     .finish

;  .15bpp:
;        mov     [PUTPIXEL], Vesa20_putpixel15
;        mov     [GETPIXEL], Vesa20_getpixel15
;        mov     [_display.bytes_per_pixel], 2
;        jmp     .finish

  .16bpp:
        mov     [PUTPIXEL], Vesa20_putpixel16
        mov     [GETPIXEL], Vesa20_getpixel16
        mov     [_display.bytes_per_pixel], 2
        jmp     .finish

  .24bpp:
        mov     [PUTPIXEL], Vesa20_putpixel24
        mov     [GETPIXEL], Vesa20_getpixel24
        mov     [_display.bytes_per_pixel], 3
        jmp     .finish

  .32bpp:
        mov     [PUTPIXEL], Vesa20_putpixel32
        mov     [GETPIXEL], Vesa20_getpixel32
        mov     [_display.bytes_per_pixel], 4
;        jmp     .finish

  .finish:
        mov     [MOUSE_PICTURE], mousepointer
        mov     [_display.check_mouse], check_mouse_area_for_putpixel
        mov     [_display.check_m_pixel], check_mouse_area_for_getpixel

; -------- 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_SWR
        stdcall alloc_page
        stdcall map_page, tss+0x80, eax, PG_SWR
        stdcall alloc_page
        stdcall map_page, tss+0x1080, eax, PG_SWR

; LOAD IDT

        call    build_interrupt_table ;lidt is executed
          ;lidt [idtreg]

        call    init_kernel_heap
        stdcall kernel_alloc, (RING0_STACK_SIZE+512) * 2
        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], 0xC00000
        call    init_LFB
        call    init_fpu
        call    init_malloc

        stdcall alloc_kernel_space, 0x50000         ; FIXME check size
        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_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
        mov     [srv.fd], eax
        mov     [srv.bk], eax

;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, [_display.win_map_size]
        mov     [_display.win_map], eax

        xor     eax, eax
        inc     eax

; set background

        mov     [BgrDrawMode], eax
        mov     [BgrDataWidth], eax
        mov     [BgrDataHeight], eax
        mov     [mem_BACKGROUND], 4
        mov     [img_background], static_background_data

; set clipboard

        xor     eax, eax
        mov     [clipboard_slots], eax
        mov     [clipboard_write_lock], eax
        stdcall kernel_alloc, 4096
        test    eax, eax
        jnz     @f

        dec     eax
@@:
        mov     [clipboard_main_list], eax

        mov     eax, [hpet_base]
        test    eax, eax
        jz      @F
        mov     eax, [hpet_base]
        stdcall map_io_mem, [hpet_base], 1024, PG_GLOBAL+PAT_UC+PG_SWR
        mov     [hpet_base], eax
        mov     eax, [eax]
        DEBUGF  1, "K : HPET caps %x\n", eax
@@:
; SET UP OS TASK

        mov     esi, boot_setostask
        call    boot_log

        mov     eax, sys_proc
        lea     edi, [eax+PROC.heap_lock]
        mov     ecx, (PROC.ht_free-PROC.heap_lock)/4

        list_init eax
        add     eax, PROC.thr_list
        list_init eax

        xor     eax, eax
        cld
        rep stosd

        mov     [edi], dword (PROC.pdt_0 - PROC.htab)/4 - 3
        mov     [edi+4], dword 3           ;reserve handles for stdin stdout and stderr
        mov     ecx, (PROC.pdt_0 - PROC.htab)/4
        add     edi, 8
        inc     eax
@@:
        stosd
        inc     eax
        cmp     eax, ecx
        jbe     @B

        mov     [sys_proc+PROC.pdt_0_phys], sys_proc-OS_BASE+PROC.pdt_0

        mov     eax, -1
        mov     edi, thr_slot_map+4
        mov     [edi-4], dword 0xFFFFFFF8
        stosd
        stosd
        stosd
        stosd
        stosd
        stosd
        stosd

        mov     [current_process], sys_proc

        mov     edx, SLOT_BASE+256*1
        mov     ebx, [os_stack_seg]
        add     ebx, 0x2000
        call    setup_os_slot
        mov     dword [edx], 'IDLE'
        sub     [edx+APPDATA.saved_esp], 4
        mov     eax, [edx+APPDATA.saved_esp]
        mov     dword [eax], idle_thread
        mov     ecx, IDLE_PRIORITY
        call    scheduler_add_thread

        mov     edx, SLOT_BASE+256*2
        mov     ebx, [os_stack_seg]
        call    setup_os_slot
        mov     dword [edx], 'OS'
        xor     ecx, ecx
        call    scheduler_add_thread

        mov     dword [CURRENT_TASK], 2
        mov     dword [TASK_COUNT], 2
        mov     dword [current_slot], SLOT_BASE + 256*2
        mov     dword [TASK_BASE], CURRENT_TASK + 32*2

; Move other CPUs to deep sleep, if it is useful
uglobal
use_mwait_for_idle db 0
endg
        cmp     [cpu_vendor+8], 'ntel'
        jnz     .no_wake_cpus
        bt      [cpu_caps+4], CAPS_MONITOR-32
        jnc     .no_wake_cpus
        dbgstr 'using mwait for idle loop'
        inc     [use_mwait_for_idle]
        mov     ebx, [cpu_count]
        cmp     ebx, 1
        jbe     .no_wake_cpus
        call    create_trampoline_pgmap
        mov     [cr3_ap+OS_BASE], eax
        mov     eax, cr4
        mov     [cr4_ap+OS_BASE], eax
        mov     esi, OS_BASE + ap_init16
        mov     edi, OS_BASE + 8000h
        mov     ecx, (ap_init16_size + 3) / 4
        rep movsd
        stdcall map_io_mem, [acpi_lapic_base], 0x1000, PG_GLOBAL+PG_NOCACHE+PG_SWR
        mov     [LAPIC_BASE], eax
        lea     edi, [eax+300h]
        mov     esi, smpt+4
        dec     ebx
.wake_cpus_loop:
        lodsd
        push    esi
        xor     esi, esi
        inc     esi
        shl     eax, 24
        mov     [edi+10h], eax
; assert INIT IPI
        mov     dword [edi], 0C500h
        call    delay_ms
@@:
        test    dword [edi], 1000h
        jnz     @b
; deassert INIT IPI
        mov     dword [edi], 8500h
        call    delay_ms
@@:
        test    dword [edi], 1000h
        jnz     @b
; send STARTUP IPI
        mov     dword [edi], 600h + (8000h shr 12)
        call    delay_ms
@@:
        test    dword [edi], 1000h
        jnz     @b
        pop     esi
        dec     ebx
        jnz     .wake_cpus_loop
        mov     eax, [cpu_count]
        dec     eax
@@:
        cmp     [ap_initialized], eax
        jnz     @b
        mov     eax, [cr3_ap+OS_BASE]
        call    free_page
.no_wake_cpus:

; REDIRECT ALL IRQ'S TO INT'S 0x20-0x2f
        mov     esi, boot_initirq
        call    boot_log
        call    init_irqs

        mov     esi, boot_picinit
        call    boot_log
        call    PIC_init

        mov     esi, boot_v86machine
        call    boot_log
; Initialize system V86 machine
        call    init_sys_v86

        mov     esi, boot_inittimer
        call    boot_log
; Initialize system timer (IRQ0)
        call    PIT_init

; Register ramdisk file system
        cmp     [boot_dev+OS_BASE+0x10000], 1
        je      @f

        call    register_ramdisk
;--------------------------------------
@@:
        mov     esi, boot_initapic
        call    boot_log
; Try to Initialize APIC
        call    APIC_init

        mov     esi, boot_enableirq
        call    boot_log
; Enable timer IRQ (IRQ0) and co-processor IRQ (IRQ13)
; they are used: when partitions are scanned, hd_read relies on timer
        call    unmask_timer
        stdcall enable_irq, 2               ; @#$%! PIC
        stdcall enable_irq, 13              ; co-processor

; Setup serial output console (if enabled)
if defined debug_com_base

        ; reserve port so nobody else will use it
        xor     ebx, ebx
        mov     ecx, debug_com_base
        mov     edx, debug_com_base+7
        call    r_f_port_area

        ; 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


;-----------------------------------------------------------------------------
; show SVN version of kernel on the message board
;-----------------------------------------------------------------------------
        mov     eax, [version_inf.rev]
        DEBUGF  1, "K : kernel SVN r%d\n", eax
;-----------------------------------------------------------------------------
; show CPU count on the message board
;-----------------------------------------------------------------------------
        mov     eax, [cpu_count]
        test    eax, eax
        jnz     @F
        mov     al, 1                             ; at least one CPU
@@:
        DEBUGF  1, "K : %d CPU detected\n", eax
;-----------------------------------------------------------------------------
; detect Floppy drives
;-----------------------------------------------------------------------------
        mov     esi, boot_detectfloppy
        call    boot_log
include 'detect/dev_fd.inc'
;-----------------------------------------------------------------------------
; create pci-devices list
;-----------------------------------------------------------------------------
        mov     [pci_access_enabled], 1
        call    pci_enum
;-----------------------------------------------------------------------------
; initialisation IDE ATA code
;-----------------------------------------------------------------------------
include 'detect/init_ata.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

        mov     esi, boot_loadlibs
        call    boot_log
; 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

; Display APIC status
        mov     esi, boot_APIC_found
        cmp     [irq_mode], IRQ_APIC
        je      @f
        mov     esi, boot_APIC_nfound
@@:
        call    boot_log

; PRINT AMOUNT OF MEMORY
        mov     esi, boot_memdetect
        call    boot_log

        movzx   ecx, word [boot_y]
        if lang eq ru
        or      ecx, (10+30*6) shl 16
        else if lang eq sp
        or      ecx, (10+33*6) shl 16
        else
        or      ecx, (10+29*6) shl 16
        end if
        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

include "detect/vortex86.inc"                     ; Vortex86 SoC detection code

        stdcall load_pe_driver, szVidintel, 0

        call    usb_init

; SET PRELIMINARY WINDOW STACK AND POSITIONS

        mov     esi, boot_windefs
        call    boot_log
        call    set_window_defaults

; 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

        call    init_display
        mov     eax, [def_cursor]
        mov     [SLOT_BASE+APPDATA.cursor+256], eax
        mov     [SLOT_BASE+APPDATA.cursor+256*2], eax

; PRINT CPU FREQUENCY

        mov     esi, boot_cpufreq
        call    boot_log

        cli
        mov     ebx, [hpet_base]
        test    ebx, ebx
        jz      @F
        mov     ebx, [ebx+0xF0]

        rdtsc
        mov     ecx, 1000
        sub     eax, [hpet_tsc_start]
        sbb     edx, [hpet_tsc_start+4]
        shld    edx, eax, 10
        shl     eax, 10
        mov     esi, eax
        mov     eax, edx
        mul     ecx
        xchg    eax, esi
        mul     ecx
        adc     edx, esi
        div     ebx
        mul     ecx
        div     [hpet_period]
        mul     ecx
        DEBUGF  1, "K : cpu frequency %u Hz\n", eax
        jmp     .next
@@:
        rdtsc
        mov     ecx, eax
        mov     esi, 250            ; wait 1/4 a second
        call    delay_ms
        rdtsc
        sti

        sub     eax, ecx
        xor     edx, edx
        shld    edx, eax, 2
        shl     eax, 2
.next:
        mov     dword [cpu_freq], eax
        mov     dword [cpu_freq+4], edx
        mov     ebx, 1000000
        div     ebx
        mov     ebx, eax

        movzx   ecx, word [boot_y]
        if lang eq ru
        add     ecx, (10+19*6) shl 16 - 10
        else if lang eq sp
        add     ecx, (10+25*6) shl 16 - 10
        else
        add     ecx, (10+17*6) shl 16 - 10
        end if

        mov     edx, 0xFFFFFF
        xor     edi, edi
        mov     eax, 0x00040000
        inc     edi
        call    display_number_force

; SET VARIABLES

        call    set_variables

; 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 I/O permission map

        mov     esi, [default_io_map]
        stdcall map_page, esi, [SLOT_BASE+256+APPDATA.io_map], PG_READ
        add     esi, 0x1000
        stdcall map_page, esi, [SLOT_BASE+256+APPDATA.io_map+4], PG_READ

        stdcall map_page, tss._io_map_0, \
                [SLOT_BASE+256+APPDATA.io_map], PG_READ
        stdcall map_page, tss._io_map_1, \
                [SLOT_BASE+256+APPDATA.io_map+4], PG_READ

; SET KEYBOARD PARAMETERS
        mov     al, 0xf6       ; reset keyboard, scan enabled
        call    kb_write_wait_ack
        test    ah, ah
        jnz     .no_keyboard

iglobal
align 4
ps2_keyboard_functions:
        dd      .end - $
        dd      0       ; no close
        dd      ps2_set_lights
.end:
endg
        stdcall register_keyboard, ps2_keyboard_functions, 0
       ; mov   al, 0xED       ; Keyboard LEDs - only for testing!
       ; call  kb_write_wait_ack
       ; mov   al, 111b
       ; call  kb_write_wait_ack

        mov     al, 0xF3     ; set repeat rate & delay
        call    kb_write_wait_ack
        mov     al, 0; 30 250 ;00100010b ; 24 500  ;00100100b  ; 20 500
        call    kb_write_wait_ack
     ;// mike.dld [
        call    set_lights
     ;// mike.dld ]
        stdcall attach_int_handler, 1, irq1, 0
        DEBUGF  1, "K : IRQ1 return code %x\n", eax
.no_keyboard:

; Load PS/2 mouse driver

        stdcall load_pe_driver, szPS2MDriver, 0

        mov     esi, boot_setmouse
        call    boot_log
        call    setmouse

; LOAD FIRST APPLICATION
        cmp     byte [launcher_start], 1        ; Check if starting LAUNCHER is selected on blue screen (1 = yes)
        jnz     first_app_found

        cli
        mov     ebp, firstapp
        call    fs_execute_from_sysdir
        test    eax, eax
        jns     first_app_found

        mov     esi, boot_failed
        call    boot_log

        mov     eax, 0xDEADBEEF      ; otherwise halt
        hlt

first_app_found:

; START MULTITASKING

; A 'All set - press ESC to start' messages if need
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     [timer_ticks_enable], 1         ; for cd driver

        sti

        call    mtrr_validate

        jmp     osloop


        ; Fly :)

uglobal
align 4
ap_initialized  dd      0
endg

ap_init_high:
        mov     ax, os_stack
        mov     bx, app_data
        mov     cx, app_tls
        mov     ss, ax
        mov     ds, bx
        mov     es, bx
        mov     fs, cx
        mov     gs, bx
        xor     esp, esp
        mov     eax, sys_proc-OS_BASE+PROC.pdt_0
        mov     cr3, eax
        lock inc [ap_initialized]
        jmp     idle_loop


include 'unpacker.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

; in: edx -> APPDATA for OS/IDLE slot
; in: ebx = stack base
proc setup_os_slot
        xor     eax, eax
        mov     ecx, 256/4
        mov     edi, edx
        rep stosd

        mov     eax, tss+0x80
        call    get_pg_addr
        inc     eax
        mov     [edx+APPDATA.io_map], eax
        mov     eax, tss+0x1080
        call    get_pg_addr
        inc     eax
        mov     [edx+APPDATA.io_map+4], eax

        mov     dword [edx+APPDATA.pl0_stack], ebx
        lea     edi, [ebx+0x2000-512]
        mov     dword [edx+APPDATA.fpu_state], edi
        mov     dword [edx+APPDATA.saved_esp0], edi
        mov     dword [edx+APPDATA.saved_esp], edi
        mov     dword [edx+APPDATA.terminate_protection], 1 ; make unkillable

        mov     esi, fpu_data
        mov     ecx, 512/4
        cld
        rep movsd

        lea     eax, [edx+APP_OBJ_OFFSET]
        mov     dword [edx+APPDATA.fd_obj], eax
        mov     dword [edx+APPDATA.bk_obj], eax

        mov     dword [edx+APPDATA.cur_dir], sysdir_path

        mov     [edx + APPDATA.process], sys_proc

        lea     ebx, [edx+APPDATA.list]
        lea     ecx, [sys_proc+PROC.thr_list]
        list_add_tail ebx, ecx

        mov     eax, edx
        shr     eax, 3
        add     eax, CURRENT_TASK - (SLOT_BASE shr 3)
        mov     [eax+TASKDATA.wnd_number], dh
        mov     byte [eax+TASKDATA.pid], dh

        ret
endp

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;                                                                    ;
;                    MAIN OS LOOP START                              ;
;                                                                    ;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
align 32
osloop:
        mov     edx, osloop_has_work?
        xor     ecx, ecx
        call    Wait_events
        xor     eax, eax
        xchg    eax, [osloop_nonperiodic_work]
        test    eax, eax
        jz      .no_periodic

        call    __sys_draw_pointer
        call    window_check_events
        call    mouse_check_events
        call    checkmisc
        call    checkVga_N13
;--------------------------------------
.no_periodic:
        call    stack_handler
        call    check_fdd_motor_status
        call    check_ATAPI_device_event
        call    check_lights_state
        call    check_timers

        jmp     osloop
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;                                                                    ;
;                      MAIN OS LOOP END                              ;
;                                                                    ;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
proc osloop_has_work?
        cmp     [osloop_nonperiodic_work], 0
        jnz     .yes
        call    stack_handler_has_work?
        jnz     .yes
        call    check_fdd_motor_status_has_work?
        jnz     .yes
        call    check_ATAPI_device_event_has_work?
        jnz     .yes
        call    check_lights_state_has_work?
        jnz     .yes
        call    check_timers_has_work?
        jnz     .yes
.no:
        xor     eax, eax
        ret
.yes:
        xor     eax, eax
        inc     eax
        ret
endp

proc wakeup_osloop
        mov     [osloop_nonperiodic_work], 1
        ret
endp

uglobal
align 4
osloop_nonperiodic_work dd      ?
endg

uglobal
align 64
idle_addr       rb      64
endg

idle_thread:
        sti

; The following code can be executed by all CPUs in the system.
; All other parts of the kernel do not expect multi-CPU.
; Also, APs don't even have a stack here.
; Beware. Don't do anything here. Anything at all.
idle_loop:
        cmp     [use_mwait_for_idle], 0
        jnz     idle_loop_mwait

idle_loop_hlt:
        hlt
        jmp     idle_loop_hlt

idle_loop_mwait:
        mov     eax, idle_addr
        xor     ecx, ecx
        xor     edx, edx
        monitor
        xor     ecx, ecx
        mov     eax, 20h        ; or 10h
        mwait
        jmp     idle_loop_mwait


;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;                                                                      ;
;                   INCLUDED SYSTEM FILES                              ;
;                                                                      ;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;


include "kernel32.inc"


;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;                                                                      ;
;                       KERNEL FUNCTIONS                               ;
;                                                                      ;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

reserve_irqs_ports:


; RESERVE PORTS
        mov     eax, RESERVED_PORTS
        mov     ecx, 1

        mov     [eax], dword 4

        mov     [eax+16], ecx
        mov     [eax+16+4], dword 0
        mov     [eax+16+8], dword 0x2D

        mov     [eax+32], ecx
        mov     [eax+32+4], dword 0x30
        mov     [eax+32+8], dword 0x4D

        mov     [eax+48], ecx
        mov     [eax+48+4], dword 0x50
        mov     [eax+48+8], dword 0xDF

        mov     [eax+64], ecx
        mov     [eax+64+4], dword 0xE5
        mov     [eax+64+8], dword 0xFF

        ret


iglobal
  process_number dd 0x2
endg

set_variables:

        mov     ecx, 0x16                    ; flush port 0x60
.fl60:
        in      al, 0x60
        loop    .fl60
        push    eax

        mov     ax, [BOOT_VARS+BOOT_Y_RES]
        shr     ax, 1
        shl     eax, 16
        mov     ax, [BOOT_VARS+BOOT_X_RES]
        shr     ax, 1
        mov     [MOUSE_X], eax
        call    wakeup_osloop

        xor     eax, eax
        mov     [BTN_ADDR], dword BUTTON_INFO ; address of button list

        mov     byte [KEY_COUNT], al              ; keyboard buffer
        mov     byte [BTN_COUNT], al              ; button buffer
;        mov   [MOUSE_X],dword 100*65536+100    ; mouse x/y

        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:
;It is not optimization
        mov     eax, ebx
        mov     ebx, ecx
        mov     ecx, edx
        mov     edx, esi
        mov     esi, edi
; 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
;-----------------------------------------------------------------------------
iglobal
midi_base dw 0
endg
;-----------------------------------------------------------------------------
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 = not used
;  4 = not used
;  5 = system language, 1eng 2fi 3ger 4rus
;  6 = not used
;  7 = not used
;  8 = not used
;  9 = not used
; 10 = not used
; 11 = enable lba read
; 12 = enable pci access
;-----------------------------------------------------------------------------
        and     [esp+32], dword 0
; F.21.1 - set MPU MIDI base port
        dec     ebx
        jnz     @f

        cmp     ecx, 0x100
        jb      @f

        mov     esi, 65535
        cmp     esi, ecx
        jb      @f

        mov     [midi_base], cx
        mov     word [mididp], cx
        inc     cx
        mov     word [midisp], cx
        ret
;--------------------------------------
@@:
; F.21.2 - set keyboard layout
        dec     ebx
        jnz     @f

        mov     edi, [TASK_BASE]
        mov     eax, [edi+TASKDATA.mem_start]
        add     eax, edx
; 1 = normal layout
        dec     ecx
        jnz     .shift

        mov     ebx, keymap
        mov     ecx, 128
        call    memmove
        ret
;--------------------------------------
.shift:
; 2 = layout at pressed Shift
        dec     ecx
        jnz     .alt

        mov     ebx, keymap_shift
        mov     ecx, 128
        call    memmove
        ret
;--------------------------------------
.alt:
; 3 = layout at pressed Alt
        dec     ecx
        jnz     .country

        mov     ebx, keymap_alt
        mov     ecx, 128
        call    memmove
        ret
;--------------------------------------
.country:
; country identifier
        sub     ecx, 6
        jnz     .error

        mov     word [keyboard], dx
        ret
;--------------------------------------
@@:
; F.21.5 - set system language
        sub     ebx, 3
        jnz     @f

        mov     [syslang], ecx
        ret
;--------------------------------------
@@:
; F.21.11 - enable/disable low-level access to HD
        and     ecx, 1
        sub     ebx, 6
        jnz     @f

        mov     [lba_read_enabled], ecx
        ret
;--------------------------------------
@@:
; F.21.12 - enable/disable low-level access to PCI
        dec     ebx
        jnz     .error

        mov     [pci_access_enabled], ecx
        ret
;--------------------------------------
.error:
        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 = not used
;  4 = not used
;  5 = system language, 1eng 2fi 3ger 4rus
;  6 = not used
;  7 = not used
;  8 = not used
;  9 = get hs timer tic
; 10 = not used
; 11 = get the state "lba read"
; 12 = get the state "pci access"
;-----------------------------------------------------------------------------
; F.26.1 - get MPU MIDI base port
        dec     ebx
        jnz     @f

        movzx   eax, [midi_base]
        mov     [esp+32], eax
        ret
;--------------------------------------
@@:
; F.26.2 - get keyboard layout
        dec     ebx
        jnz     @f

        mov     edi, [TASK_BASE]
        mov     ebx, [edi+TASKDATA.mem_start]
        add     ebx, edx
; 1 = normal layout
        dec     ecx
        jnz     .shift

        mov     eax, keymap
        mov     ecx, 128
        call    memmove
        ret
;--------------------------------------
.shift:
; 2 = layout with pressed Shift
        dec     ecx
        jnz     .alt

        mov     eax, keymap_shift
        mov     ecx, 128
        call    memmove
        ret
;--------------------------------------
.alt:
; 3 = layout with pressed Alt
        dec     ecx
        jne     .country

        mov     eax, keymap_alt
        mov     ecx, 128
        call    memmove
        ret
;--------------------------------------
.country:
; 9 = country identifier
        sub     ecx, 6
        jnz     .error

        movzx   eax, word [keyboard]
        mov     [esp+32], eax
        ret
;--------------------------------------
@@:
; F.26.5 - get system language
        sub     ebx, 3
        jnz     @f

        mov     eax, [syslang]
        mov     [esp+32], eax
        ret
;--------------------------------------
@@:
; F.26.9 - get the value of the time counter
        sub     ebx, 4
        jnz     @f

        mov     eax, [timer_ticks]
        mov     [esp+32], eax
        ret
;--------------------------------------
@@:
; F.26.10 - get the time from kernel launch in nanoseconds
        sub     ebx, 1
        jnz     @f

        call    get_clock_ns
        mov     [esp+24], edx
        mov     [esp+32], eax
        ret
;--------------------------------------
@@:
; F.26.11 - Find out whether low-level HD access is enabled
        sub     ebx, 1
        jnz     @f

        mov     eax, [lba_read_enabled]
        mov     [esp+32], eax
        ret
;--------------------------------------
@@:
; F.26.12 - Find out whether low-level PCI access is enabled
        dec     ebx
        jnz     .error

        mov     eax, [pci_access_enabled]
        mov     [esp+32], eax
        ret
;--------------------------------------
.error:
        or      [esp+32], dword -1
        ret
;-----------------------------------------------------------------------------
get_timer_ticks:
        mov     eax, [timer_ticks]
        ret
;-----------------------------------------------------------------------------
iglobal
align 4
mousefn dd msscreen
        dd mswin
        dd msbutton
        dd msbuttonExt
        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 buttons pressed ext
; eax=4 load cursor
; eax=5 set cursor
; eax=6 delete cursor
; eax=7 get mouse_z

        cmp     ebx, 7
        ja      @f
        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

msbuttonExt:
        mov     eax, [BTN_DOWN]
        mov     [esp+36-4], eax
        ret

app_load_cursor:
        cmp     ecx, OS_BASE
        jae     @f
        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

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

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:
;--------------------------------------
        cmp     [_display.select_cursor], 0
        je      @f
; restore default cursor before killing
        pusha
        mov     ecx, [current_slot]
        call    restore_default_cursor_before_killing
        popa
@@:
;--------------------------------------
; kill all sockets this process owns
        pusha
        mov     edx, [TASK_BASE]
        mov     edx, [edx+TASKDATA.pid]
        call    socket_process_end
        popa
;--------------------------------------
        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], TSTATE_ZOMBIE
        call    wakeup_osloop

.waitterm:            ; wait here for termination
        call    change_task
        jmp     .waitterm
;------------------------------------------------------------------------------
align 4
restore_default_cursor_before_killing:
        pushfd
        cli
        mov     eax, [def_cursor]
        mov     [ecx+APPDATA.cursor], eax

        movzx   eax, word [MOUSE_Y]
        movzx   ebx, word [MOUSE_X]
        mov     eax, [d_width_calc_area + eax*4]

        add     eax, [_display.win_map]
        movzx   edx, byte [ebx+eax]
        shl     edx, 8
        mov     esi, [edx+SLOT_BASE+APPDATA.cursor]

        cmp     esi, [current_cursor]
        je      @f

        push    esi
        call    [_display.select_cursor]
        mov     [current_cursor], esi
@@:
        mov     [redrawmouse_unconditional], 1
        call    wakeup_osloop
        popfd
        ret
;------------------------------------------------------------------------------
iglobal
align 4
sys_system_table:
        dd      sysfn_deactivate        ; 1 = deactivate window
        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
        dd      sysfn_min_windows       ; 23 = minimize all windows
        dd      sysfn_set_screen_sizes  ; 24 = set screen sizes for Vesa

        dd      sysfn_zmodif            ; 25 = get/set window z modifier  ;Fantomer
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_VARS+0x9030], cl

        mov     eax, [TASK_COUNT]
        mov     [SYS_SHUTDOWN], al
        mov     [shutdown_processes], eax
        call    wakeup_osloop
        and     dword [esp+32], 0
 exit_for_anyone:
        ret
  uglobal
   shutdown_processes:
                       dd 0x0
  endg
;------------------------------------------------------------------------------
sysfn_terminate:        ; 18.2 = TERMINATE
        push    ecx
        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
        push    ecx edx
        lea     edx, [(ecx-(CURRENT_TASK and 1FFFFFFFh)-TASKDATA.state)*8+SLOT_BASE]
        call    request_terminate
        pop     edx ecx
        test    eax, eax
        jz      noprocessterminate
;--------------------------------------
; terminate all network sockets it used
        pusha
        mov     eax, edx
        call    socket_process_end
        popa
;--------------------------------------
        cmp     [_display.select_cursor], 0
        je      .restore_end
; restore default cursor before killing
        pusha
        mov     ecx, [esp+32]
        shl     ecx, 8
        add     ecx, SLOT_BASE
        mov     eax, [def_cursor]
        cmp     [ecx+APPDATA.cursor], eax
        je      @f
        call    restore_default_cursor_before_killing
@@:
        popa
.restore_end:
;--------------------------------------
     ;call MEM_Heap_Lock      ;guarantee that process isn't working with heap
        mov     [ecx], byte 3; clear possible i40's
        call    wakeup_osloop
     ;call MEM_Heap_UnLock

        cmp     edx, [application_table_owner]; clear app table stat
        jne     noatsc
        call    unlock_application_table
noatsc:
noprocessterminate:
        add     esp, 4
        ret
;------------------------------------------------------------------------------
sysfn_terminate2:
;lock application_table_status mutex
.table_status:
        call    lock_application_table
        mov     eax, ecx
        call    pid_to_slot
        test    eax, eax
        jz      .not_found
        mov     ecx, eax
        cli
        call    sysfn_terminate
        call    unlock_application_table
        sti
        and     dword [esp+32], 0
        ret
.not_found:
        call    unlock_application_table
        or      dword [esp+32], -1
        ret
;------------------------------------------------------------------------------
sysfn_deactivate:         ; 18.1 = DEACTIVATE WINDOW
        cmp     ecx, 2
        jb      .nowindowdeactivate
        cmp     ecx, [TASK_COUNT]
        ja      .nowindowdeactivate

        movzx   esi, word [WIN_STACK + ecx*2]
        cmp     esi, 1
        je      .nowindowdeactivate ; already deactive

        mov     edi, ecx
        shl     edi, 5
        add     edi, window_data
        movzx   esi, word [WIN_STACK + ecx * 2]
        lea     esi, [WIN_POS + esi * 2]
        call    window._.window_deactivate

        call    syscall_display_settings._.calculate_whole_screen
        call    syscall_display_settings._.redraw_whole_screen
.nowindowdeactivate:
        ret
;------------------------------------------------------------------------------
sysfn_activate:         ; 18.3 = ACTIVATE WINDOW
        cmp     ecx, 2
        jb      .nowindowactivate
        cmp     ecx, [TASK_COUNT]
        ja      .nowindowactivate
;-------------------------------------
@@:
; If the window is captured and moved by the user,
; then you can't change the position in window stack!!!
        mov     al, [mouse.active_sys_window.action]
        and     al, WINDOW_MOVE_AND_RESIZE_FLAGS
        test    al, al
        jz      @f
        call    change_task
        jmp     @b
@@:
;-------------------------------------
        mov     [window_minimize], 2; restore window if minimized
        call    wakeup_osloop

        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
;------------------------------------------------------------------------------
align 4
sysfn_zmodif:
;18,25,1 - get z_modif
;18,25,2 - set z_modif
;edx = -1(for current task) or TID
;esi(for 2) = new value z_modif
;return:
;1:   eax = z_modif
;2: eax=0(fail),1(success) for set z_modif

        cmp     edx, -1
        jne     @f
        mov     edx, [CURRENT_TASK]
     @@:
        cmp     edx, [TASK_COUNT]
        ja      .fail
        cmp     edx, 1
        je      .fail

        mov     eax, edx
        shl     edx, 5

        cmp     [edx + CURRENT_TASK + TASKDATA.state], 9
        je      .fail

        cmp     ecx, 1
        jnz     .set_zmod

        mov     al, [edx + window_data + WDATA.z_modif]
        jmp     .exit

.set_zmod:
        cmp     ecx, 2
        jnz     .fail

        mov     ebx, esi
        mov     esi, eax

        cmp     bl, ZPOS_ALWAYS_TOP
        jg      .fail

        mov     [edx + window_data + WDATA.z_modif], bl

        mov     eax, [edx + window_data + WDATA.box.left]
        mov     ebx, [edx + window_data + WDATA.box.top]
        mov     ecx, [edx + window_data + WDATA.box.width]
        mov     edx, [edx + window_data + WDATA.box.height]
        add     ecx, eax
        add     edx, ebx
        call    window._.set_screen
        call    window._.set_top_wnd
        call    window._.redraw_top_wnd

        shl     esi, 5
        mov     [esi + window_data + WDATA.fl_redraw], 1


        mov     eax, 1
        jmp     .exit
.fail:
        xor     eax, eax
.exit:
        mov     [esp+32], eax
        ret

;------------------------------------------------------------------------------
sysfn_getidletime:              ; 18.4 = GET IDLETIME
        mov     eax, [CURRENT_TASK+32+TASKDATA.cpu_usage]
        mov     [esp+32], eax
        ret
;------------------------------------------------------------------------------
sysfn_getcpuclock:              ; 18.5 = GET TSC/SEC
        mov     eax, dword [cpu_freq]
        mov     [esp+32], eax
        ret
;------------------------------------------------------------------------------
get_cpu_freq:
        mov     eax, dword [cpu_freq]
        mov     edx, dword [cpu_freq+4]
        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
        call    wakeup_osloop
        ret
;------------------------------------------------------------------------------
align 4
sysfn_getdiskinfo:      ; 18.11 = get disk info table
        dec     ecx
        jnz     .exit
.small_table:
        mov     edi, edx
        mov     esi, DRIVE_DATA
        mov     ecx, DRIVE_DATA_SIZE ;10
        cld
        rep movsb
.exit:
        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, ecx
        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
        mov     eax, [_display.width]
        shr     eax, 1
        mov     [MOUSE_X], ax
        mov     eax, [_display.height]
        shr     eax, 1
        mov     [MOUSE_Y], ax
        call    wakeup_osloop
        xor     eax, eax
        and     [esp+32], eax
        ret
;------------------------------------------------------------------------------
sysfn_mouse_acceleration:       ; 18.19 = set/get mouse features
        cmp     ecx, 8
        jnc     @f
        jmp     dword [.table+ecx*4]
.get_mouse_acceleration:
        xor     eax, eax
        mov     ax, [mouse_speed_factor]
        mov     [esp+32], eax
        ret
.set_mouse_acceleration:
        mov     [mouse_speed_factor], dx
        ret
.get_mouse_delay:
        xor     eax, eax
        mov     al, [mouse_delay]
        mov     [esp+32], eax
        ret
.set_mouse_delay:
        mov     [mouse_delay], dl
@@:
        ret
.set_pointer_position:
        cmp     dx, word[_display.height]
        jae     @b
        rol     edx, 16
        cmp     dx, word[_display.width]
        jae     @b
        mov     [MOUSE_X], edx
        mov     [mouse_active], 1
        jmp     wakeup_osloop
.set_mouse_button:
        mov     [BTN_DOWN], edx
        mov     [mouse_active], 1
        jmp     wakeup_osloop
.get_doubleclick_delay:
        xor     eax, eax
        mov     al, [mouse_doubleclick_delay]
        mov     [esp+32], eax
        ret
.set_doubleclick_delay:
        mov     [mouse_doubleclick_delay], dl
        ret
align 4
.table:
dd      .get_mouse_acceleration
dd      .set_mouse_acceleration
dd      .get_mouse_delay
dd      .set_mouse_delay
dd      .set_pointer_position
dd      .set_mouse_button
dd      .get_doubleclick_delay
dd      .set_doubleclick_delay
;------------------------------------------------------------------------------
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
;------------------------------------------------------------------------------
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
;------------------------------------------------------------------------------
sysfn_min_windows:
        call    minimize_all_window
        mov     [esp+32], eax
        call    change_task
        ret
;------------------------------------------------------------------------------
sysfn_set_screen_sizes:
        cmp     [SCR_MODE], word 0x13
        jbe     .exit

        cmp     [_display.select_cursor], select_cursor
        jne     .exit

        cmp     ecx, [display_width_standard]
        ja      .exit

        cmp     edx, [display_height_standard]
        ja      .exit

        pushfd
        cli
        mov     eax, ecx
        mov     ecx, [_display.lfb_pitch]
        mov     [_display.width], eax
        dec     eax
        mov     [_display.height], edx
        dec     edx
; eax - new Screen_Max_X
; edx - new Screen_Max_Y
        mov     [do_not_touch_winmap], 1
        call    set_screen
        mov     [do_not_touch_winmap], 0
        popfd
        call    change_task
.exit:
        ret
;------------------------------------------------------------------------------
uglobal
screen_workarea RECT
display_width_standard dd 0
display_height_standard dd 0
do_not_touch_winmap db 0
window_minimize db 0
sound_flag      db 0

endg

UID_NONE=0
UID_MENUETOS=1   ;official
UID_KOLIBRI=2    ;russian

iglobal
version_inf:
        db 0,7,7,0  ; version 0.7.7.0
        db 0
.rev    dd __REV__
version_end:
endg
;------------------------------------------------------------------------------
align 4
sys_cachetodiskette:
        cmp     ebx, 1
        jb      .no_floppy_save
        cmp     ebx, 2
        ja      .no_floppy_save
        call    save_image
        mov     [esp + 32], eax
        ret
.no_floppy_save:
        mov     [esp + 32], dword 1
        ret
;------------------------------------------------------------------------------
uglobal
;  bgrchanged  dd  0x0
align 4
bgrlockpid dd 0
bgrlock db 0
endg
;------------------------------------------------------------------------------
align 4
sys_background:
        cmp     ebx, 1                     ; BACKGROUND SIZE
        jnz     nosb1
        test    ecx, ecx
        jz      sbgrr

        test    edx, edx
        jz      sbgrr
;--------------------------------------
align 4
@@:
;;Maxis use atomic bts for mutexes  4.4.2009
        bts     dword [bgrlock], 0
        jnc     @f
        call    change_task
        jmp     @b
;--------------------------------------
align 4
@@:
        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
;--------------------------------------
align 4
@@:
; calculate RAW size
        xor     eax, eax
        inc     eax
        cmp     [BgrDataWidth], eax
        jae     @f
        mov     [BgrDataWidth], eax
;--------------------------------------
align 4
@@:
        cmp     [BgrDataHeight], eax
        jae     @f
        mov     [BgrDataHeight], eax
;--------------------------------------
align 4
@@:
        mov     eax, [BgrDataWidth]
        imul    eax, [BgrDataHeight]
        lea     eax, [eax*3]
; it is reserved with aligned to the boundary of 4 KB pages,
; otherwise there may be exceptions a page fault for vesa20_drawbackground_tiled
; because the 32 bit read is used for  high performance: "mov eax,[esi]"
        shr     eax, 12
        inc     eax
        shl     eax, 12
        mov     [mem_BACKGROUND], eax
; get memory for new background
        stdcall kernel_alloc, eax
        test    eax, eax
        jz      .memfailed
        mov     [img_background], eax
        jmp     .exit
;--------------------------------------
align 4
.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
;--------------------------------------
align 4
.exit:
        popad
        mov     [bgrlock], 0
;--------------------------------------
align 4
sbgrr:
        ret
;------------------------------------------------------------------------------
align 4
nosb1:
        cmp     ebx, 2                     ; SET PIXEL
        jnz     nosb2

        mov     eax, [img_background]
        test    ecx, ecx
        jz      @f
        cmp     eax, static_background_data
        jz      .ret
;--------------------------------------
align 4
@@:
        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
;--------------------------------------
align 4
.ret:
        ret
;------------------------------------------------------------------------------
align 4
nosb2:
        cmp     ebx, 3                     ; DRAW BACKGROUND
        jnz     nosb3
;--------------------------------------
align 4
draw_background_temp:
        mov     [background_defined], 1
        call    force_redraw_background
;--------------------------------------
align 4
nosb31:
        ret
;------------------------------------------------------------------------------
align 4
nosb3:
        cmp     ebx, 4                     ; TILED / STRETCHED
        jnz     nosb4
        cmp     ecx, [BgrDrawMode]
        je      nosb41
        mov     [BgrDrawMode], ecx
;--------------------------------------
align 4
nosb41:
        ret
;------------------------------------------------------------------------------
align 4
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
;--------------------------------------
align 4
@@:
  ; bughere
        mov     eax, ecx
        mov     ebx, edx
        add     ebx, [img_background];IMG_BACKGROUND
        mov     ecx, esi
        call    memmove
;--------------------------------------
align 4
.fin:
        ret
;------------------------------------------------------------------------------
align 4
nosb5:
        cmp     ebx, 6
        jnz     nosb6
;--------------------------------------
align 4
;;Maxis use atomic bts for mutex 4.4.2009
@@:
        bts     dword [bgrlock], 0
        jnc     @f
        call    change_task
        jmp     @b
;--------------------------------------
align 4
@@:
        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
;--------------------------------------
align 4
.z:
        mov     eax, [page_tabs+ebx*4]
        test    al, 1
        jz      @f
        call    free_page
;--------------------------------------
align 4
@@:
        mov     eax, [page_tabs+esi*4]
        or      al, PG_UWR
        mov     [page_tabs+ebx*4], eax
        mov     eax, ebx
        shl     eax, 12
        invlpg  [eax]
        inc     ebx
        inc     esi
        loop    .z
        ret
;--------------------------------------
align 4
.nomem:
        and     [bgrlockpid], 0
        mov     [bgrlock], 0
;------------------------------------------------------------------------------
align 4
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
;--------------------------------------
align 4
@@:
        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
;--------------------------------------
align 4
.err:
        and     dword [esp+32], 0
        ret
;------------------------------------------------------------------------------
align 4
nosb7:
        cmp     ebx, 8
        jnz     nosb8

        mov     ecx, [current_slot]
        xor     eax, eax
        xchg    eax, [ecx+APPDATA.draw_bgr_x]
        mov     [esp + 32], eax ; eax = [left]*65536 + [right]
        xor     eax, eax
        xchg    eax, [ecx+APPDATA.draw_bgr_y]
        mov     [esp + 20], eax ; ebx = [top]*65536 + [bottom]
        ret
;------------------------------------------------------------------------------
align 4
nosb8:
        cmp     ebx, 9
        jnz     nosb9
; ecx = [left]*65536 + [right]
; edx = [top]*65536 + [bottom]
        mov     eax, [_display.width]
        mov     ebx, [_display.height]
        dec     eax
        dec     ebx
; check [right]
        cmp     cx, ax
        ja      .exit
; check [left]
        ror     ecx, 16
        cmp     cx, ax
        ja      .exit
; check [bottom]
        cmp     dx, bx
        ja      .exit
; check [top]
        ror     edx, 16
        cmp     dx, bx
        ja      .exit

        movzx   eax, cx  ; [left]
        movzx   ebx, dx  ; [top]

        shr     ecx, 16 ; [right]
        shr     edx, 16 ; [bottom]

        mov     [background_defined], 1

        mov     [draw_data+32 + RECT.left], eax
        mov     [draw_data+32 + RECT.top], ebx

        mov     [draw_data+32 + RECT.right], ecx
        mov     [draw_data+32 + RECT.bottom], edx

        inc     byte[REDRAW_BACKGROUND]
        call    wakeup_osloop
;--------------------------------------
align 4
.exit:
        ret
;------------------------------------------------------------------------------
align 4
nosb9:
        ret
;------------------------------------------------------------------------------
align 4
uglobal
  BG_Rect_X_left_right  dd   0x0
  BG_Rect_Y_top_bottom  dd   0x0
endg
;------------------------------------------------------------------------------
align 4
force_redraw_background:
        and     [draw_data+32 + RECT.left], 0
        and     [draw_data+32 + RECT.top], 0
        push    eax ebx
        mov     eax, [_display.width]
        mov     ebx, [_display.height]
        dec     eax
        dec     ebx
        mov     [draw_data+32 + RECT.right], eax
        mov     [draw_data+32 + RECT.bottom], ebx
        pop     ebx eax
        inc     byte[REDRAW_BACKGROUND]
        call    wakeup_osloop
        ret
;------------------------------------------------------------------------------
align 4
sys_getbackground:
;    cmp   eax,1                                  ; SIZE
        dec     ebx
        jnz     nogb1
        mov     eax, [BgrDataWidth]
        shl     eax, 16
        mov     ax, word [BgrDataHeight]
        mov     [esp+32], eax
        ret
;------------------------------------------------------------------------------
align 4
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
;--------------------------------------
align 4
@@:
        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
;--------------------------------------
align 4
.ret:
        ret
;------------------------------------------------------------------------------
align 4
nogb2:

;    cmp   eax,4                                  ; TILED / STRETCHED
        dec     ebx
        dec     ebx
        jnz     nogb4
        mov     eax, [BgrDrawMode]
;--------------------------------------
align 4
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   ax, byte [KEY_BUFF + 120 + 2]
        shl     eax, 8
        mov     al, 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
        add     eax, 120 + 2
        add     ebx, 120 + 2
        call    memmove
        pop     eax
;--------------------------------------
align 4
.ret_eax:
        mov     [esp + 32], eax
        ret
;--------------------------------------
align 4
.finish:
; test hotkeys buffer
        mov     ecx, hotkey_buffer
;--------------------------------------
align 4
@@:
        cmp     [ecx], ebx
        jz      .found
        add     ecx, 8
        cmp     ecx, hotkey_buffer + 120 * 8
        jb      @b
        ret
;--------------------------------------
align 4
.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]
        and     al, 0xFE                                    ; delete left button bit
        mov     [BTN_COUNT], byte 0
        mov     [esp + 32], eax
;--------------------------------------
align 4
.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.process]
        mov     edx, [edx+PROC.mem_used]
        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

    ; Event mask (+71)
        mov     EAX, dword [ECX+CURRENT_TASK+TASKDATA.event_mask]
        stosd

    ; Keyboard mode (+75)
        mov     al, byte [ecx*8 + SLOT_BASE + APPDATA.keyboard_mode]
        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, [_display.width]
        dec     eax
        mov     [edx + RECT.right], eax
        mov     eax, [_display.height]
        dec     eax
        mov     [edx + RECT.bottom], eax

  srl1:
        ret

;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.
;---------------------------------------------------------------------------------------------
iglobal
align 4
sheduler:
        dd      sys_sheduler.00
        dd      change_task
        dd      sys_sheduler.02
        dd      sys_sheduler.03
        dd      sys_sheduler.04
endg
sys_sheduler:
;rewritten by <Lrz>  29.12.2009
        jmp     dword [sheduler+ebx*4]
;.shed_counter:
.00:
        mov     eax, [context_counter]
        mov     [esp+32], eax
        ret

.02:
;.perf_control:
        inc     ebx                     ;before ebx=2, ebx=3
        cmp     ebx, ecx                ;if ecx=3, ebx=3
        jz      cache_disable

        dec     ebx                     ;ebx=2
        cmp     ebx, ecx                ;
        jz      cache_enable            ;if ecx=2 and ebx=2

        dec     ebx                     ;ebx=1
        cmp     ebx, ecx
        jz      is_cache_enabled        ;if ecx=1 and ebx=1

        dec     ebx
        test    ebx, ecx                ;ebx=0 and ecx=0
        jz      modify_pce              ;if ecx=0

        ret

.03:
;.rdmsr_instr:
;now counter in ecx
;(edx:eax) esi:edi => edx:esi
        mov     eax, esi
        mov     ecx, edx
        rdmsr
        mov     [esp+32], eax
        mov     [esp+20], edx           ;ret in ebx?
        ret

.04:
;.wrmsr_instr:
;now counter in ecx
;(edx:eax) esi:edi => edx:esi
        ; Fast Call MSR can't be destroy
        ; Но MSR_AMD_EFER можно изменять, т.к. в этом регистре лиш
        ; включаются/выключаются расширенные возможности
        cmp     edx, MSR_SYSENTER_CS
        je      @f
        cmp     edx, MSR_SYSENTER_ESP
        je      @f
        cmp     edx, MSR_SYSENTER_EIP
        je      @f
        cmp     edx, MSR_AMD_STAR
        je      @f

        mov     eax, esi
        mov     ecx, edx
        wrmsr
        ; mov   [esp + 32], eax
        ; mov   [esp + 20], 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+32], ebx
cache_disabled:
        mov     dword [esp+32], 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+32], eax
        ret
;---------------------------------------------------------------------------------------------


iglobal
  cpustring db 'CPU',0
endg

uglobal
background_defined    db    0    ; diamond, 11.04.2006
endg
;-----------------------------------------------------------------------------
align 4
checkmisc:
        cmp     [ctrl_alt_del], 1
        jne     nocpustart

        mov     ebp, cpustring
        call    fs_execute_from_sysdir

        mov     [ctrl_alt_del], 0
;--------------------------------------
align 4
nocpustart:
        cmp     [mouse_active], 1
        jne     mouse_not_active
        mov     [mouse_active], 0

        xor     edi, edi
        mov     ebx, CURRENT_TASK

        mov     ecx, [TASK_COUNT]
        movzx   eax, word [WIN_POS + ecx*2]     ; active window
        shl     eax, 8
        push    eax

        movzx   eax, word [MOUSE_X]
        movzx   edx, word [MOUSE_Y]
;--------------------------------------
align 4
.set_mouse_event:
        add     edi, 256
        add     ebx, 32
        test    [ebx+TASKDATA.event_mask], 0x80000000
        jz      .pos_filter

        cmp     edi, [esp]                      ; skip if filtration active
        jne     .skip
;--------------------------------------
align 4
.pos_filter:
        test    [ebx+TASKDATA.event_mask], 0x40000000
        jz      .set

        mov     esi, [ebx-twdw+WDATA.box.left]
        cmp     eax, esi
        jb      .skip
        add     esi, [ebx-twdw+WDATA.box.width]
        cmp     eax, esi
        ja      .skip

        mov     esi, [ebx-twdw+WDATA.box.top]
        cmp     edx, esi
        jb      .skip
        add     esi, [ebx-twdw+WDATA.box.height]
        cmp     edx, esi
        ja      .skip
;--------------------------------------
align 4
.set:
        or      [edi+SLOT_BASE+APPDATA.event_mask], 100000b  ; set event 6
;--------------------------------------
align 4
.skip:
        loop    .set_mouse_event

        pop     eax
;--------------------------------------
align 4
mouse_not_active:
        cmp     byte[REDRAW_BACKGROUND], 0         ; background update ?
        jz      nobackgr

        cmp     [background_defined], 0
        jz      nobackgr
;--------------------------------------
align 4
backgr:
        mov     eax, [draw_data+32 + RECT.left]
        shl     eax, 16
        add     eax, [draw_data+32 + RECT.right]
        mov     [BG_Rect_X_left_right], eax ; [left]*65536 + [right]

        mov     eax, [draw_data+32 + RECT.top]
        shl     eax, 16
        add     eax, [draw_data+32 + RECT.bottom]
        mov     [BG_Rect_Y_top_bottom], eax ; [top]*65536 + [bottom]

        call    drawbackground
;        DEBUGF  1, "K : drawbackground\n"
;        DEBUGF  1, "K : backg x %x\n",[BG_Rect_X_left_right]
;        DEBUGF  1, "K : backg y %x\n",[BG_Rect_Y_top_bottom]
;--------- set event 5 start ----------
        push    ecx edi
        xor     edi, edi
        mov     ecx, [TASK_COUNT]
;--------------------------------------
align 4
set_bgr_event:
        add     edi, 256
        mov     eax, [BG_Rect_X_left_right]
        mov     edx, [BG_Rect_Y_top_bottom]
        cmp     [edi+SLOT_BASE+APPDATA.draw_bgr_x], 0
        jz      .set
.join:
        cmp     word [edi+SLOT_BASE+APPDATA.draw_bgr_x], ax
        jae     @f
        mov     word [edi+SLOT_BASE+APPDATA.draw_bgr_x], ax
@@:
        shr     eax, 16
        cmp     word [edi+SLOT_BASE+APPDATA.draw_bgr_x+2], ax
        jbe     @f
        mov     word [edi+SLOT_BASE+APPDATA.draw_bgr_x+2], ax
@@:
        cmp     word [edi+SLOT_BASE+APPDATA.draw_bgr_y], dx
        jae     @f
        mov     word [edi+SLOT_BASE+APPDATA.draw_bgr_y], dx
@@:
        shr     edx, 16
        cmp     word [edi+SLOT_BASE+APPDATA.draw_bgr_y+2], dx
        jbe     @f
        mov     word [edi+SLOT_BASE+APPDATA.draw_bgr_y+2], dx
@@:
        jmp     .common
.set:
        mov     [edi+SLOT_BASE+APPDATA.draw_bgr_x], eax
        mov     [edi+SLOT_BASE+APPDATA.draw_bgr_y], edx
.common:
        or      [edi+SLOT_BASE+APPDATA.event_mask], 10000b  ; set event 5
        loop    set_bgr_event
        pop     edi ecx
;--------- set event 5 stop -----------
        dec     byte[REDRAW_BACKGROUND]    ; got new update request?
        jnz     backgr

        xor     eax, eax
        mov     [draw_data+32 + RECT.left], eax
        mov     [draw_data+32 + RECT.top], eax
        mov     [draw_data+32 + RECT.right], eax
        mov     [draw_data+32 + RECT.bottom], eax
;--------------------------------------
align 4
nobackgr:
; system shutdown request
        cmp     [SYS_SHUTDOWN], byte 0
        je      noshutdown

        mov     edx, [shutdown_processes]

        cmp     [SYS_SHUTDOWN], dl
        jne     noshutdown

        lea     ecx, [edx-1]
        mov     edx, OS_BASE+0x3040
        jecxz   no_mark_system_shutdown
;--------------------------------------
align 4
markz:
        push    ecx edx
        cmp     [edx+TASKDATA.state], TSTATE_FREE
        jz      .nokill
        lea     edx, [(edx-(CURRENT_TASK and 1FFFFFFFh))*8+SLOT_BASE]
        cmp     [edx+APPDATA.process], sys_proc
        jz      .nokill
        call    request_terminate
        jmp     .common
.nokill:
        dec     byte [SYS_SHUTDOWN]
        xor     eax, eax
.common:
        pop     edx ecx
        test    eax, eax
        jz      @f
        mov     [edx+TASKDATA.state], TSTATE_ZOMBIE
@@:
        add     edx, 0x20
        loop    markz
        call    wakeup_osloop
;--------------------------------------
align 4
@@:
no_mark_system_shutdown:
        dec     byte [SYS_SHUTDOWN]
        je      system_shutdown
;--------------------------------------
align 4
noshutdown:
        mov     eax, [TASK_COUNT]           ; termination
        mov     ebx, TASK_DATA+TASKDATA.state
        mov     esi, 1
;--------------------------------------
align 4
newct:
        mov     cl, [ebx]
        cmp     cl, byte 3
        jz      .terminate

        cmp     cl, byte 4
        jnz     .noterminate
.terminate:
        pushad
        mov     ecx, eax
        shl     ecx, 8
        add     ecx, SLOT_BASE
        call    restore_default_cursor_before_killing
        popad

        pushad
        call    terminate
        popad
        cmp     byte [SYS_SHUTDOWN], 0
        jz      .noterminate
        dec     byte [SYS_SHUTDOWN]
        je      system_shutdown

.noterminate:
        add     ebx, 0x20
        inc     esi
        dec     eax
        jnz     newct
        ret
;-----------------------------------------------------------------------------
align 4
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
;--------------------------------------
align 4
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, [esp+4]        ;if upper in z-position - no redraw
        test    eax, eax
        jz      @f
        mov     al, [eax + WDATA.z_modif]
        cmp     [edi + WDATA.z_modif], al
        jg      ricino
      @@:

        mov     eax, [edi + WDATA.box.left]
        mov     ebx, [edi + WDATA.box.top]

        mov     ecx, [draw_limits.bottom] ; ecx = area y end     ebx = window y start
        cmp     ecx, ebx
        jb      ricino

        mov     ecx, [draw_limits.right] ; 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, [draw_limits.top]  ; eax = area y start     edx = window y end
        cmp     edx, eax
        jb      ricino

        mov     eax, [draw_limits.left]  ; eax = area x start     ecx = window x end
        cmp     ecx, eax
        jb      ricino
;--------------------------------------
align 4
bgli:
        cmp     dword[esp], 1
        jnz     .az

        cmp     byte[REDRAW_BACKGROUND], 0
        jz      .az

        mov     dl, 0
        lea     eax, [edi+draw_data-window_data]
        mov     ebx, [draw_limits.left]
        cmp     ebx, [eax+RECT.left]
        jae     @f

        mov     [eax+RECT.left], ebx
        mov     dl, 1
;--------------------------------------
align 4
@@:
        mov     ebx, [draw_limits.top]
        cmp     ebx, [eax+RECT.top]
        jae     @f

        mov     [eax+RECT.top], ebx
        mov     dl, 1
;--------------------------------------
align 4
@@:
        mov     ebx, [draw_limits.right]
        cmp     ebx, [eax+RECT.right]
        jbe     @f

        mov     [eax+RECT.right], ebx
        mov     dl, 1
;--------------------------------------
align 4
@@:
        mov     ebx, [draw_limits.bottom]
        cmp     ebx, [eax+RECT.bottom]
        jbe     @f

        mov     [eax+RECT.bottom], ebx
        mov     dl, 1
;--------------------------------------
align 4
@@:
        add     byte[REDRAW_BACKGROUND], dl
        call    wakeup_osloop
        jmp     newdw8
;--------------------------------------
align 4
.az:
        mov     eax, edi
        add     eax, draw_data-window_data

        mov     ebx, [draw_limits.left]        ; set limits
        mov     [eax + RECT.left], ebx
        mov     ebx, [draw_limits.top]
        mov     [eax + RECT.top], ebx
        mov     ebx, [draw_limits.right]
        mov     [eax + RECT.right], ebx
        mov     ebx, [draw_limits.bottom]
        mov     [eax + RECT.bottom], ebx

        sub     eax, draw_data-window_data

        cmp     dword [esp], 1
        jne     nobgrd
        inc     byte[REDRAW_BACKGROUND]
        call    wakeup_osloop
;--------------------------------------
align 4
newdw8:
nobgrd:
;--------------------------------------
        push    eax  edi ebp
        mov     edi, [esp+12]
        cmp     edi, 1
        je      .found

        mov     eax, [draw_limits.left]
        mov     ebx, [draw_limits.top]
        mov     ecx, [draw_limits.right]
        sub     ecx, eax
        test    ecx, ecx
        jz      .not_found

        mov     edx, [draw_limits.bottom]
        sub     edx, ebx
        test    edx, edx
        jz      .not_found

; eax - x, ebx - y
; ecx - size x, edx - size y
        add     ebx, edx
;--------------------------------------
align 4
.start_y:
        push    ecx
;--------------------------------------
align 4
.start_x:
        add     eax, ecx
        mov     ebp, [d_width_calc_area + ebx*4]
        add     ebp, [_display.win_map]
        movzx   ebp, byte[eax+ebp] ; get value for current point
        cmp     ebp, edi
        jne     @f

        pop     ecx
        jmp     .found
;--------------------------------------
align 4
@@:
        sub     eax, ecx

        dec     ecx
        jnz     .start_x

        pop     ecx
        dec     ebx
        dec     edx
        jnz     .start_y
;--------------------------------------
align 4
.not_found:
        pop     ebp edi eax
        jmp     ricino
;--------------------------------------
align 4
.found:
        pop     ebp edi eax

        mov     [eax + WDATA.fl_redraw], byte 1  ; mark as redraw
;--------------------------------------
align 4
ricino:
not_this_task:
        pop     ecx

        cmp     ecx, [TASK_COUNT]
        jle     newdw2

        pop     eax
        popad
        ret
;-----------------------------------------------------------------------------
align 4
calculatebackground:   ; background
        mov     edi, [_display.win_map]              ; set os to use all pixels
        mov     eax, 0x01010101
        mov     ecx, [_display.win_map_size]
        shr     ecx, 2
        rep stosd

        mov     byte[REDRAW_BACKGROUND], 0            ; do not draw background!
        ret
;-----------------------------------------------------------------------------
uglobal
  imax    dd 0x0
endg
;-----------------------------------------------------------------------------
align 4
delay_ms:     ; delay in 1/1000 sec
        push    eax
        push    ecx

        mov     ecx, esi
        ; <CPU clock fix by Sergey Kuzmin aka Wildwest>
        imul    ecx, 33941
        shr     ecx, 9
        ; </CPU clock fix>

        in      al, 0x61
        and     al, 0x10
        mov     ah, al
        cld
;--------------------------------------
align 4
cnt1:
        in      al, 0x61
        and     al, 0x10
        cmp     al, ah
        jz      cnt1

        mov     ah, al
        loop    cnt1

        pop     ecx
        pop     eax
        ret
;-----------------------------------------------------------------------------
align 4
set_app_param:
        mov     edi, [TASK_BASE]
        mov     eax, ebx
        btr     eax, 3                           ; move MOUSE_FILTRATION
        mov     ebx, [current_slot]              ; bit into event_filter
        setc    byte [ebx+APPDATA.event_filter]
        xchg    eax, [edi + TASKDATA.event_mask] ; set new event mask
        mov     [esp+32], eax                    ; return old mask value
        ret
;-----------------------------------------------------------------------------

; this is for syscall
proc delay_hs_unprotected
        call    unprotect_from_terminate
        call    delay_hs
        call    protect_from_terminate
        ret
endp

if 1
align 4
delay_hs:     ; delay in 1/100 secs
; ebx = delay time

        pushad
        push    ebx
        xor     esi, esi
        mov     ecx, MANUAL_DESTROY
        call    create_event
        test    eax, eax
        jz      .done

        mov     ebx, edx
        mov     ecx, [esp]
        push    edx
        push    eax
        call    wait_event_timeout
        pop     eax
        pop     ebx
        call    destroy_event
.done:
        add     esp, 4
        popad
        ret

else

align 4
delay_hs:     ; delay in 1/100 secs
; ebx = delay time
        push    ecx
        push    edx

        mov     edx, [timer_ticks]
;--------------------------------------
align 4
newtic:
        mov     ecx, [timer_ticks]
        sub     ecx, edx
        cmp     ecx, ebx
        jae     zerodelay

        call    change_task

        jmp     newtic
;--------------------------------------
align 4
zerodelay:
        pop     edx
        pop     ecx
        ret
end if

;-----------------------------------------------------------------------------
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
;--------------------------------------
align 4
@@:
        rep movsb
;--------------------------------------
align 4
.finish:
        pop     ecx edi esi
;--------------------------------------
align 4
.ret:
        ret
;-----------------------------------------------------------------------------
; <diamond> 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
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
;-----------------------------------------------------------------------------
align 4
drawbackground:
dbrv20:
        cmp     [BgrDrawMode], dword 1
        jne     bgrstr
        call    vesa20_drawbackground_tiled
;        call    [draw_pointer]
        call    __sys_draw_pointer
        ret
;--------------------------------------
align 4
bgrstr:
        call    vesa20_drawbackground_stretch
;        call    [draw_pointer]
        call    __sys_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
;--------------------------------------
align 4
.exit:
        ret
;--------------------------------------
align 4
@@:
        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
;--------------------------------------
align 4
.forced:
        push    ebp esi 0
        mov     ebp, putimage_get24bpp
        mov     esi, putimage_init24bpp
;--------------------------------------
align 4
sys_putimage_bpp:
        call    vesa20_putimage
        pop     ebp esi ebp
        ret
;        jmp     [draw_pointer]
;-----------------------------------------------------------------------------
align 4
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
;--------------------------------------
align 4
.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
;--------------------------------------
align 4
@@:
        cmp     esi, 2
        jnz     @f
        push    edi
        push    0ffffff80h
        mov     edi, esp
        call    put_2bit_image
        pop     eax
        pop     edi
        ret
;--------------------------------------
align 4
@@:
        cmp     esi, 4
        jnz     @f
        push    edi
        push    0ffffff80h
        mov     edi, esp
        call    put_4bit_image
        pop     eax
        pop     edi
        ret
;--------------------------------------
align 4
@@:
        push    ebp esi ebp
        cmp     esi, 8
        jnz     @f
        mov     ebp, putimage_get8bpp
        mov     esi, putimage_init8bpp
        jmp     sys_putimage_bpp
;--------------------------------------
align 4
@@:
        cmp     esi, 9
        jnz     @f
        mov     ebp, putimage_get9bpp
        mov     esi, putimage_init9bpp
        jmp     sys_putimage_bpp
;--------------------------------------
align 4
@@:
        cmp     esi, 15
        jnz     @f
        mov     ebp, putimage_get15bpp
        mov     esi, putimage_init15bpp
        jmp     sys_putimage_bpp
;--------------------------------------
align 4
@@:
        cmp     esi, 16
        jnz     @f
        mov     ebp, putimage_get16bpp
        mov     esi, putimage_init16bpp
        jmp     sys_putimage_bpp
;--------------------------------------
align 4
@@:
        cmp     esi, 24
        jnz     @f
        mov     ebp, putimage_get24bpp
        mov     esi, putimage_init24bpp
        jmp     sys_putimage_bpp
;--------------------------------------
align 4
@@:
        cmp     esi, 32
        jnz     @f
        mov     ebp, putimage_get32bpp
        mov     esi, putimage_init32bpp
        jmp     sys_putimage_bpp
;--------------------------------------
align 4
@@:
        pop     ebp esi ebp
        ret
;-----------------------------------------------------------------------------
align 4
put_mono_image:
        push    ebp esi ebp
        mov     ebp, putimage_get1bpp
        mov     esi, putimage_init1bpp
        jmp     sys_putimage_bpp
;-----------------------------------------------------------------------------
align 4
put_2bit_image:
        push    ebp esi ebp
        mov     ebp, putimage_get2bpp
        mov     esi, putimage_init2bpp
        jmp     sys_putimage_bpp
;-----------------------------------------------------------------------------
align 4
put_4bit_image:
        push    ebp esi ebp
        mov     ebp, putimage_get4bpp
        mov     esi, putimage_init4bpp
        jmp     sys_putimage_bpp
;-----------------------------------------------------------------------------
align 4
putimage_init24bpp:
        lea     eax, [eax*3]
putimage_init8bpp:
putimage_init9bpp:
        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
;-----------------------------------------------------------------------------
align 16
putimage_get9bpp:
        lodsb
        mov     ah, al
        shl     eax, 8
        mov     al, ah
        ret     4
;-----------------------------------------------------------------------------
align 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
;-----------------------------------------------------------------------------
align 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
;-----------------------------------------------------------------------------
align 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
;-----------------------------------------------------------------------------
align 4
putimage_init32bpp:
        shl     eax, 2
        ret
;-----------------------------------------------------------------------------
align 16
putimage_get32bpp:
        lodsd
        ret     4
;-----------------------------------------------------------------------------
align 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
;-----------------------------------------------------------------------------
;align 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]
;--------------------------------------
;align 4
;.forced:
;        call    vesa20_drawbar
;        call    [draw_pointer]
;        ret
;-----------------------------------------------------------------------------
align 4
kb_write_wait_ack:

        push    ecx edx

        mov     dl, al
        mov     ecx, 0x1ffff; last 0xffff, new value in view of fast CPU's
.wait_output_ready:
        in      al, 0x64
        test    al, 2
        jz      @f
        loop    .wait_output_ready
        mov     ah, 1
        jmp     .nothing
@@:
        mov     al, dl
        out     0x60, al
        mov     ecx, 0xfffff; last 0xffff, new value in view of fast CPU's
.wait_ack:
        in      al, 0x64
        test    al, 1
        jnz     @f
        loop    .wait_ack
        mov     ah, 1
        jmp     .nothing
@@:
        in      al, 0x60
        xor     ah, ah

.nothing:
        pop     edx ecx

        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

sys_msg_board_str:

        pushad
   @@:
        cmp     [esi], byte 0
        je      @f
        mov     ebx, 1
        movzx   ecx, 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     cl, al
        xor     ebx, ebx
        inc     ebx
        call    sys_msg_board
        pop     eax
        pop     ecx
        loop    @b
        popad
        ret

msg_board_data_size = 65536 ; Must be power of two

uglobal
  msg_board_data  rb msg_board_data_size
  msg_board_count dd 0x0
endg

sys_msg_board:

; ebx=1 : write :  bl byte to write
; ebx=2 :  read :  ebx=0 -> no data, ebx=1 -> data in al

        push    eax ebx                 ; Save eax and ebx, since we're restoring their order required.
        mov     eax, ebx
        mov     ebx, ecx

        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
; // if debug_direct_print == 1
        cmp     byte [debug_direct_print], 1
        jnz     @f
        pusha
iglobal
msg_board_pos   dd      (42*6)*65536+10 ; for printing debug output on the screen
endg
        lea     edx, [msg_board_data+ecx]
        mov     ecx, 0x40FFFFFF
        mov     ebx, [msg_board_pos]
        mov     edi, 1
        mov     esi, 1
        call    dtext
        popa
        add     word [msg_board_pos+2], 6
        cmp     bl, 10
        jnz     @f
        mov     word [msg_board_pos+2], (42*6)
        add     word [msg_board_pos], 10
        mov     ax, word [_display.width]
        cmp     word [msg_board_pos], ax
        jb      @f
        mov     word [msg_board_pos], 10
@@:
; // end if

if 0
        pusha
        mov     al, bl
        mov     edx, 402h
        out     dx, al
        popa
end if
        inc     ecx
        and     ecx, msg_board_data_size - 1
        mov     [msg_board_count], ecx

        pop     ebx eax
        ret
.smbl1:
        cmp     eax, 2
        jne     .smbl2
        test    ecx, ecx
        jz      .smbl21

        add     esp, 8                  ; Returning data in ebx and eax, so no need to restore them.
        mov     eax, msg_board_data+1
        mov     ebx, msg_board_data
        movzx   edx, byte [ebx]
        call    memmove
        dec     [msg_board_count]
        mov     [esp + 32], edx ;eax
        mov     [esp + 20], dword 1
        ret
.smbl21:
        mov     [esp+32], ecx
        mov     [esp+20], ecx
.smbl2:
        pop     ebx eax
        ret

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; 66 sys function.                                                ;;
;; in eax=66,ebx in [0..5],ecx,edx                                 ;;
;; out eax                                                         ;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
iglobal
align 4
f66call:
           dd sys_process_def.1   ; 1 = set keyboard mode
           dd sys_process_def.2   ; 2 = get keyboard mode
           dd sys_process_def.3   ; 3 = get keyboard ctrl, alt, shift
           dd sys_process_def.4   ; 4 = set system-wide hotkey
           dd sys_process_def.5   ; 5 = delete installed hotkey
           dd sys_process_def.6   ; 6 = disable input, work only hotkeys
           dd sys_process_def.7   ; 7 = enable input, opposition to f.66.6
endg
;-----------------------------------------------------------------------------
align 4
sys_process_def:
        dec     ebx
        cmp     ebx, 7
        jae     .not_support    ;if >=8 then or eax,-1

        mov     edi, [CURRENT_TASK]
        jmp     dword [f66call+ebx*4]

.not_support:
        or      eax, -1
        ret
;-----------------------------------------------------------------------------
align 4
.1:
        shl     edi, 8
        mov     [edi+SLOT_BASE + APPDATA.keyboard_mode], cl

        ret
;-----------------------------------------------------------------------------
align 4
.2:                             ; 2 = get keyboard mode
        shl     edi, 8
        movzx   eax, byte [SLOT_BASE+edi + APPDATA.keyboard_mode]
        mov     [esp+32], eax
        ret
;-----------------------------------------------------------------------------
align 4
.3:                             ;3 = get keyboard ctrl, alt, shift
        mov     eax, [kb_state]
        mov     [esp+32], eax
        ret
;-----------------------------------------------------------------------------
align 4
.4:
        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+32], 1
        ret
.found_free:
        mov     [eax+8], edi
        mov     [eax+4], edx
        movzx   ecx, cl
        lea     ecx, [hotkey_scancodes+ecx*4]
        mov     edx, [ecx]
        mov     [eax], edx
        mov     [ecx], eax
        mov     [eax+12], ecx
        test    edx, edx
        jz      @f
        mov     [edx+12], eax
@@:
        and     dword [esp+32], 0
        ret
;-----------------------------------------------------------------------------
align 4
.5:
        movzx   ebx, cl
        lea     ebx, [hotkey_scancodes+ebx*4]
        mov     eax, [ebx]
.scan:
        test    eax, eax
        jz      .notfound
        cmp     [eax+8], edi
        jnz     .next
        cmp     [eax+4], edx
        jz      .found
.next:
        mov     eax, [eax]
        jmp     .scan
.notfound:
        mov     dword [esp+32], 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+32], edx
        ret
;-----------------------------------------------------------------------------
align 4
.6:
        pushfd
        cli
        mov     eax, [PID_lock_input]
        test    eax, eax
        jnz     @f
; get current PID
        mov     eax, [CURRENT_TASK]
        shl     eax, 5
        mov     eax, [eax+CURRENT_TASK+TASKDATA.pid]
; set current PID for lock input
        mov     [PID_lock_input], eax
@@:
        popfd
        ret
;-----------------------------------------------------------------------------
align 4
.7:
        mov     eax, [PID_lock_input]
        test    eax, eax
        jz      @f
; get current PID
        mov     ebx, [CURRENT_TASK]
        shl     ebx, 5
        mov     ebx, [ebx+CURRENT_TASK+TASKDATA.pid]
; compare current lock input with current PID
        cmp     ebx, eax
        jne     @f

        xor     eax, eax
        mov     [PID_lock_input], eax
@@:
        ret
;-----------------------------------------------------------------------------
uglobal
  PID_lock_input dd 0x0
endg
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; 61 sys function.                                                ;;
;; in eax=61,ebx in [1..3]                                         ;;
;; out eax                                                         ;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
iglobal
align 4
f61call:
           dd sys_gs.1   ; resolution
           dd sys_gs.2   ; bits per pixel
           dd sys_gs.3   ; bytes per scanline
endg


align 4

sys_gs:                         ; direct screen access
        dec     ebx
        cmp     ebx, 2
        ja      .not_support
        jmp     dword [f61call+ebx*4]
.not_support:
        or      [esp+32], dword -1
        ret


.1:                             ; resolution
        mov     eax, [_display.width]
        shl     eax, 16
        mov     ax, word [_display.height]
        mov     [esp+32], eax
        ret
.2:                             ; bits per pixel
        mov     eax, [_display.bits_per_pixel]
        mov     [esp+32], eax
        ret
.3:                             ; bytes per scanline
        mov     eax, [_display.lfb_pitch]
        mov     [esp+32], 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
        and     ecx, 0xFBFFFFFF  ;negate 0x04000000 save to mouseunder area
;        jmp     [putpixel]
        jmp     __sys_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
        test    ecx, 0x08000000  ; redirect the output to the user area
        jnz     @f
        add     ebx, ebp
align 4
@@:
        mov     eax, edi
        test    ecx, 0x08000000  ; redirect the output to the user area
        jnz     dtext
        xor     edi, edi
        jmp     dtext

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]
        jmp     vesa20_drawbar
.drectr:
        ret

align 4
syscall_getscreensize:                  ; GetScreenSize
        mov     ax, word [_display.width]
        dec     ax
        shl     eax, 16
        mov     ax, word [_display.height]
        dec     ax
        mov     [esp + 32], eax
        ret
;-----------------------------------------------------------------------------
align 4
syscall_cdaudio:
; ECX - position of CD/DVD-drive
; from 0=Primary Master to 3=Secondary Slave for first IDE contr.
; from 4=Primary Master to 7=Secondary Slave for second IDE contr.
; from 8=Primary Master to 11=Secondary Slave for third IDE contr.
        cmp     ecx, 11
        ja      .exit

        mov     eax, ecx
        shr     eax, 2
        lea     eax, [eax*5]
        mov     al, [eax+DRIVE_DATA+1]

        push    ecx ebx
        mov     ebx, ecx
        and     ebx, 11b
        shl     ebx, 1
        mov     cl, 6
        sub     cl, bl
        shr     al, cl
        test    al, 2 ; it's not an ATAPI device
        pop     ebx ecx

        jz      .exit

        cmp     ebx, 4
        je      .eject

        cmp     ebx, 5
        je      .load
;--------------------------------------
.exit:
        ret
;--------------------------------------
.load:
        call    .reserve
        call    LoadMedium
        jmp     .free
;--------------------------------------
.eject:
        call    .reserve
        call    clear_CD_cache
        call    allow_medium_removal
        call    EjectMedium
        jmp     .free
;--------------------------------------
.reserve:
        call    reserve_cd

        mov     ebx, ecx
        inc     ebx
        mov     [cdpos], ebx

        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
        ret
;--------------------------------------
.free:
        call    free_cd_channel
        and     [cd_status], 0
        ret
;-----------------------------------------------------------------------------
align 4
syscall_getpixel_WinMap:                       ; GetPixel WinMap
        cmp     ebx, [_display.width]
        jb      @f
        cmp     ecx, [_display.height]
        jb      @f
        xor     eax, eax
        jmp     .store
;--------------------------------------
align 4
@@:
        mov     eax, [d_width_calc_area + ecx*4]
        add     eax, [_display.win_map]
        movzx   eax, byte[eax+ebx]        ; get value for current point
;--------------------------------------
align 4
.store:
        mov     [esp + 32], eax
        ret
;-----------------------------------------------------------------------------
align 4
syscall_getpixel:                       ; GetPixel
        mov     ecx, [_display.width]
        xor     edx, edx
        mov     eax, ebx
        div     ecx
        mov     ebx, edx
        xchg    eax, ebx
        and     ecx, 0xFBFFFFFF  ;negate 0x04000000 use mouseunder area
        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
        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
;--------------------------------------
align 4
.start_y:
        push    ecx edx
;--------------------------------------
align 4
.start_x:
        push    eax ebx ecx
        add     eax, ecx

        and     ecx, 0xFBFFFFFF  ;negate 0x04000000 use mouseunder area
        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
        popad
        ret
;-----------------------------------------------------------------------------
align 4
syscall_putarea_backgr:
;eax = 25
;ebx = pointer to bufer for img BBGGRRBBGGRR...
;ecx = [size x]*65536 + [size y]
;edx = [start x]*65536 + [start y]
        pushad
        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
        shl     ebp, 2

        imul    ebp, esi

        mov     esi, ecx
        dec     esi
        shl     esi, 2

        add     ebp, esi
        add     ebp, edi

        add     ebx, edx
;--------------------------------------
align 4
.start_y:
        push    ecx edx
;--------------------------------------
align 4
.start_x:
        push    eax ecx
        add     eax, ecx

        mov     ecx, [ebp]
        rol     ecx, 8
        test    cl, cl        ; transparensy = 0
        jz      .no_put

        xor     cl, cl
        ror     ecx, 8

        pushad
        mov     edx, [d_width_calc_area + ebx*4]
        add     edx, [_display.win_map]
        movzx   edx, byte [eax+edx]
        cmp     dl, byte 1
        jne     @f

        call    dword [PUTPIXEL]; eax - x, ebx - y
;--------------------------------------
align 4
@@:
        popad
;--------------------------------------
align 4
.no_put:
        pop     ecx eax

        sub     ebp, 4
        dec     ecx
        jnz     .start_x

        pop     edx ecx
        dec     ebx
        dec     edx
        jnz     .start_y

        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]
        jmp     __sys_draw_line


align 4
syscall_reserveportarea:                ; ReservePortArea and FreePortArea

        call    r_f_port_area
        mov     [esp+32], eax
        ret

align 4
syscall_threads:                        ; CreateThreads
;
;   ecx=thread entry point
;   edx=thread stack pointer
;
; on return : eax = pid

        xor     ebx, ebx
        call    new_sys_threads

        mov     [esp+32], eax
        ret

align 4

paleholder:
        ret
;------------------------------------------------------------------------------
align 4
calculate_fast_getting_offset_for_WinMapAddress:
; calculate data area for fast getting offset to _WinMapAddress
        xor     eax, eax
        mov     ecx, [_display.height]
        mov     edi, d_width_calc_area
        cld
@@:
        stosd
        add     eax, [_display.width]
        dec     ecx
        jnz     @r
        ret
;------------------------------------------------------------------------------
align 4
calculate_fast_getting_offset_for_LFB:
; calculate data area for fast getting offset to LFB
        xor     eax, eax
        mov     ecx, [_display.height]
        mov     edi, BPSLine_calc_area
        cld
@@:
        stosd
        add     eax, [_display.lfb_pitch]
        dec     ecx
        jnz     @r
        ret
;------------------------------------------------------------------------------
align 4
set_screen:
; in:
; eax - new Screen_Max_X
; ecx - new BytesPerScanLine
; edx - new Screen_Max_Y

        pushfd
        cli

        mov     [_display.lfb_pitch], ecx

        mov     [screen_workarea.right], eax
        mov     [screen_workarea.bottom], edx

        push    ebx
        push    esi
        push    edi

        pushad

        cmp     [do_not_touch_winmap], 1
        je      @f

        stdcall kernel_free, [_display.win_map]

        mov     eax, [_display.width]
        mul     [_display.height]
        mov     [_display.win_map_size], eax

        stdcall kernel_alloc, eax
        mov     [_display.win_map], eax
        test    eax, eax
        jz      .epic_fail
; store for f.18.24
        mov     eax, [_display.width]
        mov     [display_width_standard], eax

        mov     eax, [_display.height]
        mov     [display_height_standard], eax
@@:
        call    calculate_fast_getting_offset_for_WinMapAddress
; for Qemu or non standart video cards
; Unfortunately [BytesPerScanLine] does not always
;                             equal to [_display.width] * [ScreenBPP] / 8
        call    calculate_fast_getting_offset_for_LFB
        popad

        call    repos_windows
        xor     eax, eax
        xor     ebx, ebx
        mov     ecx, [_display.width]
        mov     edx, [_display.height]
        dec     ecx
        dec     edx
        call    calculatescreen
        pop     edi
        pop     esi
        pop     ebx

        popfd
        ret

.epic_fail:
        hlt                     ; Houston, we've had a problem

; --------------- APM ---------------------
uglobal
apm_entry       dp      0
apm_vf          dd      0
endg

align 4
sys_apm:
        xor     eax, eax
        cmp     word [apm_vf], ax       ; Check APM BIOS enable
        jne     @f
        inc     eax
        or      dword [esp + 44], eax   ; error
        add     eax, 7
        mov     dword [esp + 32], eax   ; 32-bit protected-mode interface not supported
        ret

@@:
;       xchg    eax, ecx
;       xchg    ebx, ecx

        cmp     dx, 3
        ja      @f
        and     [esp + 44], byte 0xfe    ; emulate func 0..3 as func 0
        mov     eax, [apm_vf]
        mov     [esp + 32], eax
        shr     eax, 16
        mov     [esp + 28], 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 + 4 ], edi
        mov     [esp + 8], esi
        mov     [esp + 20], ebx
        mov     [esp + 24], edx
        mov     [esp + 28], ecx
        mov     [esp + 32], eax
        setc    al
        and     [esp + 44], byte 0xfe
        or      [esp + 44], 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_VARS+0x9030], 1
        jne     @F
        ret
@@:
        call    stop_all_services

yes_shutdown_param:
; Shutdown other CPUs, if initialized
        cmp     [ap_initialized], 0
        jz      .no_shutdown_cpus
        mov     edi, [LAPIC_BASE]
        add     edi, 300h
        mov     esi, smpt+4
        mov     ebx, [cpu_count]
        dec     ebx
.shutdown_cpus_loop:
        lodsd
        push    esi
        xor     esi, esi
        inc     esi
        shl     eax, 24
        mov     [edi+10h], eax
; assert INIT IPI
        mov     dword [edi], 0C500h
        call    delay_ms
@@:
        test    dword [edi], 1000h
        jnz     @b
; deassert INIT IPI
        mov     dword [edi], 8500h
        call    delay_ms
@@:
        test    dword [edi], 1000h
        jnz     @b
; don't send STARTUP IPI: let other CPUs be in wait-for-startup state
        pop     esi
        dec     ebx
        jnz     .shutdown_cpus_loop
.no_shutdown_cpus:

        cli
        call    IRQ_mask_all

        mov     eax, [OS_BASE + 0x9030]
        cmp     al, SYSTEM_RESTART
        jne     @F

; load kernel.mnt to _CLEAN_ZONE
        mov     ebx, kernel_file_load
        pushad
        call    file_system_lfn
        popad

        mov     esi, OS_BASE+restart_kernel_5000 ; move kernel re-starter to 0x5000:0
        mov     edi, OS_BASE+0x50000
        mov     ecx, (restart_code_end - restart_kernel_5000)/4
        rep movsd

@@:
;disable paging

        call    create_trampoline_pgmap
        mov     cr3, eax
        jmp     @F
org $-OS_BASE
@@:
        mov     eax, cr0
        and     eax, 0x7FFFFFFF
        mov     cr0, eax
        mov     eax, cr3
        mov     cr3, eax

        cmp     byte [0x9030], SYSTEM_SHUTDOWN
        jne     no_acpi_power_off

; system_power_off

        mov     ebx, [acpi_fadt_base-OS_BASE]
        cmp     dword [ebx], 'FACP'
        jne     no_acpi_power_off
        mov     esi, [acpi_dsdt_base-OS_BASE]
        cmp     dword [esi], 'DSDT'
        jne     no_acpi_power_off
        mov     eax, [esi+4] ; DSDT length
        sub     eax, 36+4
        jbe     no_acpi_power_off
        add     esi, 36
.scan_dsdt:
        cmp     dword [esi], '_S5_'
        jnz     .scan_dsdt_cont
        cmp     byte [esi+4], 12h ; DefPackage opcode
        jnz     .scan_dsdt_cont
        mov     dl, [esi+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+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
        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:

        jmp     0x50000

align 4
restart_kernel_5000:
org 0x50000

        cmp     byte [0x9030], SYSTEM_RESTART
        jne     @F

        xchg    bx, bx

        mov     esi, _CLEAN_ZONE-OS_BASE
        mov     edi, 0x10000
        mov     ecx, 0x31000/4
        cld
        rep     movsd
@@:

        xor     ebx, ebx
        xor     edx, edx
        xor     ecx, ecx
        xor     esi, esi
        xor     edi, edi
        xor     ebp, ebp
        lidt    [.idt]
        lgdt    [.gdt]
        jmp     8:@f
align 8
.gdt:
; selector 0 - not used
        dw      23
        dd      .gdt
        dw      0
; selector 8 - code from 5000:0000 to 1000:FFFF
        dw      0FFFFh
        dw      0
        db      5
        db      10011011b
        db      00000000b
        db      0
; selector 10h - data from 1000:0000 to 1000:FFFF
        dw      0FFFFh
        dw      0
        db      1
        db      10010011b
        db      00000000b
        db      0
.idt:
        dw 256*4
        dd 0
org $ - 0x50000
use16
@@:
        mov     ax, 10h
        mov     ds, ax
        mov     es, ax
        mov     fs, ax
        mov     gs, ax
        mov     ss, ax

        mov     eax, cr0
        and     eax, not 80000001h
        mov     cr0, eax
        jmp     0x5000:.real_mode

align 4
.real_mode:

; setup stack

        mov     ax, (TMP_STACK_TOP and 0xF0000) shr 4
        mov     ss, ax
        mov     esp, TMP_STACK_TOP and 0xFFFF

;remap IRQs
        mov     al, 0x11
        out     0x20, al
        out     0xA0, al

        mov     al, 0x08
        out     0x21, al
        mov     al, 0x70
        out     0xA1, al

        mov     al, 0x04
        out     0x21, al
        mov     al, 0x02
        out     0xA1, al

        mov     al, 0x01
        out     0x21, al
        out     0xA1, al

        mov     al, 0xB8
        out     0x21, al
        mov     al, 0xBD
        out     0xA1, al

        mov     al, 00110100b
        out     43h, al
        mov     al, 0xFF
        out     40h, al
        out     40h, al

        mov     al, byte [es:0x9030]
        cmp     al, SYSTEM_RESTART
        je      .do_restart

        jmp $

.do_restart:

        mov     ax, 0x0003     ; set text mode for screen
        int     0x10
        sti

; (hint by Black_mirror)
; We must read data from keyboard port,
; because there may be situation when previous keyboard interrupt is lost
; (due to return to real mode and IRQ reprogramming)
; and next interrupt will not be generated (as keyboard waits for handling)
        in      al, 0x60

; bootloader interface
        push    0x1000
        pop     ds
        mov     si, kernel_restart_bootblock
        mov     ax, 'KL'
        jmp     0x1000:0000


align 4
org restart_kernel_5000 + $
restart_code_end:

iglobal
align 4
realmode_gdt:
; selector 0 - not used
        dw      23
        dd      realmode_gdt-OS_BASE
        dw      0
; selector 8 - code from 1000:0000 to 1000:FFFF
        dw      0FFFFh
        dw      0
        db      5
        db      10011011b
        db      00000000b
        db      0
; selector 10h - data from 1000:0000 to 1000:FFFF
        dw      0FFFFh
        dw      0
        db      1
        db      10010011b
        db      00000000b
        db      0
endg

org $+OS_BASE

if ~ lang eq sp
diff16 "end of .text segment",0,$
end if

include "data32.inc"

__REV__ = __REV

if ~ lang eq sp
diff16 "end of kernel code",0,$
end if