;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;
;; Copyright (C) KolibriOS team 2004-2013. 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>)
;; Artem Jerdev (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.
;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

include 'macros.inc'

$Revision$


USE_COM_IRQ	equ 1	   ; make irq 3 and irq 4 available for PCI devices

include "proc32.inc"
include "kglobals.inc"

include "const.inc"
max_processes	 equ   255
tss_step	 equ   (128+8192) ; tss & i/o - 65535 ports, * 256=557056*4


os_stack       equ  (os_data_l-gdts)	; GDTs
os_code        equ  (os_code_l-gdts)
graph_data     equ  (3+graph_data_l-gdts)
tss0	       equ  (tss0_l-gdts)
app_code       equ  (3+app_code_l-gdts)
app_data       equ  (3+app_data_l-gdts)
app_tls        equ  (3+tls_data_l-gdts)
pci_code_sel   equ  (pci_code_32-gdts)
pci_data_sel   equ  (pci_data_32-gdts)


;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;
;;   Included files:
;;
;;   Kernel16.inc
;;    - Bootcode.inc  Hardware setup
;;
;;   Kernel32.inc
;;    - Sys32.inc     Process management
;;    - Shutdown.inc  Shutdown and restart
;;    - Fat32.inc     Read / write hd
;;    - Vesa12.inc    Vesa 1.2 driver
;;    - Vesa20.inc    Vesa 2.0 driver
;;    - Vga.inc       VGA driver
;;    - Stack.inc     Network interface
;;    - Mouse.inc     Mouse pointer
;;    - Scincode.inc  Window skinning
;;    - Pci32.inc     PCI functions
;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;


;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;                                                                      ;;
;;                  16 BIT ENTRY FROM BOOTSECTOR                        ;;
;;                                                                      ;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

use16
		  org	0x0
		  jmp	start_of_code

version db    'Kolibri-A   version 0.1.0.0      ',13,10,13,10,0

diff16 "bootcode start: ",0,$
include "boot/bootcode.inc"    ; 16 bit system boot code

diff16 "biosdisk start: ",0,$
include "detect/biosdisk.inc"

diff16 "end of code16 : ",0,$

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;                                                                      ;;
;;                  SWITCH TO 32 BIT PROTECTED MODE                     ;;
;;                                                                      ;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

switch_32:
; 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

diff10 "32bit enter sz :",switch_32,$
diff16 "data16   start :",0,$

include "data16.inc"


use32
org $+0x10000

align 4
B32:
diff16 "32-bit code start ",0,$
	   mov	 ax,os_stack	   ; Selector for os
	   mov	 ds,ax
	   mov	 es,ax
	   mov	 fs,ax
	   mov	 gs,ax
	   mov	 ss,ax
	   mov	 esp,0x4ec00	   ; Set stack

;-------------------------------------------------------------------------------
	   call preinit_mem	; (init.inc)

	   call test_cpu	; (init.inc - to be moved to bus/CPU.inc)
	   bts [cpu_caps-OS_BASE], CAPS_TSC	;force use rdtsc

	   call init_BIOS32	; (init.inc - to be removed later)

; PCIe extended config space access


	call fusion_pcie_init	; (bus/HT.inc)


; MEMORY MODEL
	   call init_mem	; (init.inc)

; ENABLE PAGING

	   mov eax, sys_pgdir-OS_BASE
	   mov cr3, eax

	   mov eax,cr0
	   or eax,CR0_PG+CR0_WP
	   mov cr0,eax

	   lgdt [gdts]
	   jmp pword os_code:high_code

diff16 "32-bit init size ",B32,$

align 4
bios32_entry	dd ?
tmp_page_tabs	dd ?


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

org OS_BASE+$

align 4
high_code:
	   mov ax, os_stack
	   mov bx, app_data
	   mov cx, app_tls
	   mov ss, ax
	   add esp, OS_BASE

	   mov ds, bx
	   mov es, bx
	   mov fs, cx
	   mov gs, bx

	   bt [cpu_caps], CAPS_PGE
	   jnc @F

	   or dword [sys_pgdir+(OS_BASE shr 20)], PG_GLOBAL

	   mov ebx, cr4
	   or ebx, CR4_PGE
	   mov cr4, ebx
@@:
	   xor eax, eax
	   mov dword [sys_pgdir], eax
	   mov dword [sys_pgdir+4], eax

	   mov eax, cr3
	   mov cr3, eax 	  ; flush TLB

; SAVE REAL MODE VARIABLES
	xor	eax, eax
	mov	[IDEContrRegsBaseAddr], ax
; -----------------------------------------
	inc	eax
;        mov     al, [BOOT_VAR+0x901F]           ; DMA access
	mov	[allow_dma_access], al
	mov	eax, 32 			; << bpp
	mov	[ScreenBPP],al
	mov	[_display.bpp], eax

	mov	[_display.vrefresh], 60
	mov	[_display.disable_mouse],  __sys_disable_mouse

	mov	eax, 1024			; << X max
	mov	[_display.width], eax
	dec	eax
	mov	[Screen_Max_X],eax
	mov	[screen_workarea.right],eax
	mov	eax,768 			; << Y max
	mov	[_display.height], eax
	dec	eax
	mov	[Screen_Max_Y],eax
	mov	[screen_workarea.bottom],eax
	mov	eax, 0x7055			; << screen mode
	mov	[SCR_MODE],eax

	mov	eax, 4096			; << may be different!
	mov	[BytesPerScanLine],ax
	mov	[_display.pitch], eax

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

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


; GRAPHICS ADDRESSES

	and	byte [BOOT_VAR+0x901e],0x0
	mov	eax, [BOOT_VAR+0x9018]
	mov	[LFBAddress],eax

	mov	[PUTPIXEL],dword __sys_putpixel
	mov	[GETPIXEL],dword get_pixel

; -------- Fast System Call init ----------
.SEnP:
; AMD SYSCALL/SYSRET
	   mov ecx, MSR_AMD_EFER
	   rdmsr
	   or eax, 1   ; bit_0 - System Call Extension (SCE)
	   wrmsr

	; 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, 0x1B000B	; RING3 task stack will be used for fast syscalls!

	   mov eax, syscall_entry
	   mov ecx, MSR_AMD_STAR
	   wrmsr
.noSYSCALL:
; -----------------------------------------
	stdcall alloc_page
	stdcall map_page, tss-0xF80, eax, PG_SW 	; lower 0xF80 bytes might be used for something
	stdcall alloc_page
	inc	eax
	mov	[SLOT_BASE+256+APPDATA.io_map], eax
	stdcall map_page, tss+0x80, eax, PG_SW
	stdcall alloc_page
	inc	eax
	mov	dword [SLOT_BASE+256+APPDATA.io_map+4], eax
	stdcall map_page, tss+0x1080, eax, PG_SW

; LOAD IDT

	   call 	build_interrupt_table ;lidt is executed

	   call 	init_kernel_heap
	   stdcall	kernel_alloc, RING0_STACK_SIZE+512
	   mov	[os_stack_seg], eax

	   lea	esp, [eax+RING0_STACK_SIZE]

	   mov	[tss._ss0], os_stack
	   mov	[tss._esp0], esp
	   mov	[tss._esp], esp
	   mov	[tss._cs],os_code
	   mov	[tss._ss],os_stack
	   mov	[tss._ds],app_data
	   mov	[tss._es],app_data
	   mov	[tss._fs],app_data
	   mov	[tss._gs],app_data
	   mov	[tss._io],128
;Add IO access table - bit array of permitted ports
	   mov	edi, tss._io_map_0
	   xor	eax, eax
	   mov	ecx, 2047
	   rep	stosd		     ; access to 65504 ports granted
	   not	eax		     ; the last 32 ports blocked
	   stosd

	   mov	ax,tss0
	   ltr	ax

	   mov	[LFBSize], 0x800000
	   call init_LFB
	   call init_fpu
	   call init_malloc
;-
	   stdcall alloc_kernel_space, 0x51000
	   mov	[default_io_map], eax

	   add	eax, 0x2000
	   mov	[ipc_tmp], eax
	   mov	ebx, 0x1000

	   add	eax, 0x40000
	   mov	[proc_mem_map], eax

	   add	eax, 0x8000
	   mov	[proc_mem_pdir], eax

	   add	eax, ebx
	   mov	[proc_mem_tab], eax

	   add	eax, ebx
	   mov	[tmp_task_pdir], eax

	   add	eax, ebx
	   mov	[tmp_task_ptab], eax

	   add	eax, ebx
	   mov	[ipc_pdir], eax

	   add	eax, ebx
	   mov	[ipc_ptab], eax

	   stdcall kernel_alloc, (unpack.LZMA_BASE_SIZE+(unpack.LZMA_LIT_SIZE shl \
				 (unpack.lc+unpack.lp)))*4

	   mov	[unpack.p], eax     ; unpacker.inc

	   call init_events
	   mov	eax, srv.fd-SRV_FD_OFFSET
	   mov	[srv.fd], eax
	   mov	[srv.bk], eax

	   mov	edi, irq_tab
	   xor	eax, eax
	   mov	ecx, 16
	   rep	stosd

;Set base of graphic segment to linear address of LFB
	mov	eax,[LFBAddress]	  ; set for gs
	mov	[graph_data_l+2],ax
	shr	eax,16
	mov	[graph_data_l+4],al
	mov	[graph_data_l+7],ah

;       or      [KERNEL_ALLOC_FLAG], dword PG_NOCACHE   ;<<<<<<<<<<<<<<<<
	stdcall kernel_alloc, [_WinMapSize]
	mov	[_WinMapAddress], eax
;       xor     [KERNEL_ALLOC_FLAG], dword PG_NOCACHE   ;<<<<<<<<<<<<<<<<

	xor  eax,eax
	inc  eax
	mov [CURRENT_TASK],eax		;dword 1
	mov [TASK_COUNT],eax		;dword 1
	mov [TASK_BASE],dword TASK_DATA
	mov [current_slot], SLOT_BASE+256

; set background

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

	mov	[SLOT_BASE + 256 + APPDATA.dir_table], sys_pgdir - OS_BASE

	stdcall kernel_alloc, 0x10000/8
	mov	edi, eax
	mov	[network_free_ports], eax
	or	eax, -1
	mov	ecx, 0x10000/32
	rep	stosd

; REDIRECT ALL IRQ'S TO INT'S 0x20-0x2f

	call  rerouteirqs

; Initialize system V86 machine
	call	init_sys_v86

; TIMER SET TO 1/100 S

	mov   al,0x34		   ; set to 100Hz
	out   0x43,al
	mov   al,0x9b		   ; lsb    1193180 / 1193
	out   0x40,al
	mov   al,0x2e		   ; msb
	out   0x40,al

; Enable timer IRQ (IRQ0) and hard drives IRQs (IRQ14, IRQ15)
; they are used: when partitions are scanned, hd_read relies on timer
; Also enable IRQ2, because in some configurations
; IRQs from slave controller are not delivered until IRQ2 on master is enabled
	mov	al, 0xFA
	out	0x21, al
	mov	al, 0x3F
	out	0xA1, al

; Enable interrupts in IDE controller
;       mov     al, 0
;       mov     dx, 0x3F6
;       out     dx, al
;       mov     dl, 0x76
;       out     dx, al

;!!!!!!!!!!!!!!!!!!!!!!!!!!
include 'detect/disks.inc'
;!!!!!!!!!!!!!!!!!!!!!!!!!!

  call Parser_params

; READ RAMDISK IMAGE FROM HD

;!!!!!!!!!!!!!!!!!!!!!!!
;include 'boot/rdload.inc'
;!!!!!!!!!!!!!!!!!!!!!!!
;    mov    [dma_hdd],1
; CALCULATE FAT CHAIN FOR RAMDISK

	call  calculatefatchain

; LOAD VMODE DRIVER

;!!!!!!!!!!!!!!!!!!!!!!!
;include 'vmodeld.inc'
;!!!!!!!!!!!!!!!!!!!!!!!


; LOAD FONTS I and II

	stdcall read_file, char, FONT_I, 0, 2304
	stdcall read_file, char2, FONT_II, 0, 2560

;        mov   esi,boot_fonts
;        call  boot_log

; PRINT AMOUNT OF MEMORY
;        mov     esi, boot_memdetect
;        call    boot_log

	movzx	ecx, word [boot_y]
	or	ecx, (10+29*6) shl 16 ; "Determining amount of memory"
	sub	ecx, 10
	mov	edx, 0xFFFFFF
	mov	ebx, [MEM_AMOUNT]
	shr	ebx, 20
	xor	edi,edi
	mov	eax, 0x00040000
		inc		edi
	call	display_number_force

; BUILD SCHEDULER

	call   build_scheduler ; sys32.inc

;        mov    esi,boot_devices
;        call   boot_log

	mov  [pci_access_enabled],1


; SET PRELIMINARY WINDOW STACK AND POSITIONS

	mov   esi,boot_windefs
	call  boot_log
	call  set_window_defaults

; SET BACKGROUND DEFAULTS

;        mov   esi,boot_bgr
;        call  boot_log
	call  init_background	;
	call  calculatebackground

; SET UP OS TASK

;        mov  esi,boot_setostask
;        call boot_log

	xor  eax, eax
	mov  dword [SLOT_BASE+APPDATA.fpu_state], fpu_data
	mov  dword [SLOT_BASE+APPDATA.exc_handler], eax
	mov  dword [SLOT_BASE+APPDATA.except_mask], eax

	; name for OS/IDLE process

	mov dword [SLOT_BASE+256+APPDATA.app_name],   dword 'OS/I'
	mov dword [SLOT_BASE+256+APPDATA.app_name+4], dword 'DLE '
	mov edi, [os_stack_seg]
	mov dword [SLOT_BASE+256+APPDATA.pl0_stack], edi
	add edi, 0x2000-512
	mov dword [SLOT_BASE+256+APPDATA.fpu_state], edi
	mov dword [SLOT_BASE+256+APPDATA.saved_esp0], edi ; just for case
	; [SLOT_BASE+256+APPDATA.io_map] was set earlier

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

	mov dword [SLOT_BASE+256+APPDATA.exc_handler], eax
	mov dword [SLOT_BASE+256+APPDATA.except_mask], eax

	mov ebx, SLOT_BASE+256+APP_OBJ_OFFSET
	mov  dword [SLOT_BASE+256+APPDATA.fd_obj], ebx
	mov  dword [SLOT_BASE+256+APPDATA.bk_obj], ebx

	mov  dword [SLOT_BASE+256+APPDATA.cur_dir], sysdir_path
	mov dword [SLOT_BASE+256+APPDATA.tls_base], eax

	; task list
	mov  dword [TASK_DATA+TASKDATA.mem_start],eax	; process base address
	inc  eax
	mov  dword [CURRENT_TASK],eax
	mov  dword [TASK_COUNT],eax
	mov  [current_slot], SLOT_BASE+256
	mov  [TASK_BASE],dword TASK_DATA
	mov  byte[TASK_DATA+TASKDATA.wnd_number],al	; on screen number
	mov  dword [TASK_DATA+TASKDATA.pid], eax	; process id number

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


  ; READ TSC / SECOND === Fusion fam.14h only! ===

uglobal
align 4
diff16 "pll_freq : ", 0, $
pll_frequency:
	.main	dd ?
	.divd	dd ?
	.nclk	dd ?
	.osc	dd ?
endg
	mov	ecx, 0xC0010064 	; P0-state register
	rdmsr
	and	eax, 0x000001F3
	xor	ebx, ebx
	mov	bl, al
	shr	eax, 2			; divd = 4*((1 + bits[8:4]) + 0.25*(bits[1:0]))
	add	al, 4
	and	bl, 3
	add	al, bl
	mov	[pll_frequency.divd], eax


	mov	eax, [PCIe_CONFIG_SPACE + 0xC30D4]  ; bdf: 0.18.3; reg.0xD4
	and	eax, 0x0000003F 	; 100 * (16 + bits[5:0]) = MHz
	add	al, 16
	imul	eax, 100
	mov	[pll_frequency.main], eax

	shl	eax, 2
	xor	edx, edx
	mov	ebx, [pll_frequency.divd]
	div	ebx
	mov	ecx, 1000000
	push	edx
	xor	edx, edx
	mul	ecx
	mov	[CPU_FREQ], eax 	; Hz
	pop	eax
	xor	edx, edx
	mov	ecx, 250000		; remainder in MHz/4
	mul	ecx
	div	ebx
	add	eax, [CPU_FREQ]

	mov	[CPU_FREQ],eax		; save tsc / sec
	mov	ebx, 1000000
	div	ebx
	mov	[stall_mcs], eax	; (core/memory.inc:stall)

	mov	ebx, [PCIe_CONFIG_SPACE + 0xC30DC]  ; bdf: 0.18.3; reg.0xDC
	shr	ebx, 20
	and	bx, 0x3F		; NbP0NclkDiv
	mov	eax, [pll_frequency.main]
	shl	eax, 2
	xor	edx, edx
	div	ebx
	push	edx
	imul	eax, 1000000
	mov	[pll_frequency.nclk], eax  ; +-MHz
	pop	eax
	xor	edx, edx
	imul	eax, 1000000
	div	ebx
	add	[pll_frequency.nclk], eax  ; precise bus clk
	mov	eax, 200000000
	mov	[pll_frequency.osc], eax   ; 200MHz main oscillator


; PRINT CPU FREQUENCY
	mov	esi, boot_cpufreq
	call	boot_log

	mov	eax, [CPU_FREQ]
	xor	edx, edx
	mov	ebx, 1000000
	div	ebx
	mov	ebx, eax
	movzx	ecx, word [boot_y]
	add	ecx, (10+17*6) shl 16 - 10 ; 'CPU frequency is '
	mov	edx, 0xFFFFFF
	xor	edi,edi
	mov	eax, 0x00040000
	inc	edi
	call	display_number_force

; SET VARIABLES

	call  set_variables

; SET MOUSE

	stdcall load_driver, szPS2MDriver

	cli

; STACK AND FDC

	call  stack_init
;       call  fdc_init


; LOAD DEFAULT SKIN

	call	load_default_skin

;protect io permission map

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

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


	call init_userDMA	; <<<<<<<<< ============== core/memory.inc =================
;        mov     esi, boot_uDMA_ok
;        call    boot_log

	call apic_timer_reset

; LOAD FIRST APPLICATION
	cli
if 0
<<<
	cmp   byte [BOOT_VAR+0x9030],1
	jne   no_load_vrr_m

	mov	ebp, vrr_m
	call	fs_execute_from_sysdir

;        cmp   eax,2                  ; if vrr_m app found (PID=2)
	sub   eax,2
	jz    first_app_found

no_load_vrr_m: <<<
end if
	mov	ebp, firstapp
	call	fs_execute_from_sysdir

;        cmp   eax,2                  ; continue if a process has been loaded
	sub   eax,2
	jz    first_app_found

;        mov     esi, boot_failed
;        call    boot_log

	mov   eax, 0xDEADBEEF	     ; otherwise halt
	hlt

first_app_found:

	cli

	;mov   [TASK_COUNT],dword 2
	push  1
	pop   dword [CURRENT_TASK]	; set OS task fisrt

; SET KEYBOARD PARAMETERS
	mov   al, 0xf6	       ; reset keyboard, scan enabled
	call  kb_write

	; wait until 8042 is ready
	xor ecx,ecx
      @@:
	in     al,64h
	and    al,00000010b
	loopnz @b


	mov   al, 0xF3	     ; set repeat rate & delay
	call  kb_write
;        call  kb_read
	mov   al, 0 ; 30 250 ;00100010b ; 24 500  ;00100100b  ; 20 500
	call  kb_write
;        call  kb_read
     ;// mike.dld [
	call  set_lights
     ;// mike.dld ]



; START MULTITASKING

	stdcall attach_int_handler, 1, irq1, 0

	cmp	[IDEContrRegsBaseAddr], 0
	setnz	[dma_hdd]
	mov [timer_ticks_enable],1		; for cd driver

	sti
	call change_task

	jmp osloop				; Fly :)

diff16 "init code end  ",0,$

unpacker_inc:
include 'unpacker.inc'
diff16 "unpacker code  ",unpacker_inc,$

include 'fdo.inc'

align 4
boot_log:
	 pushad

	mov   ebx,10*65536
	mov   bx,word [boot_y]
	add   [boot_y],dword 10
	mov   ecx,0x80ffffff   ; ASCIIZ string with white color
		xor	  edi,edi
	mov   edx,esi
		inc	  edi
	call  dtext

	popad

	ret

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;                                                                    ;
;                    MAIN OS LOOP START                              ;
;                                                                    ;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
align 32
osloop:
	call   [draw_pointer]
	call	window_check_events
	call	mouse_check_events
	call   checkmisc
	call   stack_handler
	call   checkidle
	jmp    osloop
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;                                                                    ;
;                      MAIN OS LOOP END                              ;
;                                                                    ;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
align 4
checkidle:
	pushad
	call	change_task
	jmp	idle_loop_entry
  idle_loop:
	cmp	eax,[idlemem]	  ; eax == [timer_ticks]
	jne	idle_exit
	rdtsc	;call _rdtsc
	mov	ecx,eax
	hlt
	rdtsc	;call _rdtsc
	sub	eax,ecx
	add	[idleuse],eax
  idle_loop_entry:
	mov	eax,[timer_ticks] ; eax =  [timer_ticks]
	cmp	[check_idle_semaphore],0
	je	idle_loop
	dec	[check_idle_semaphore]
  idle_exit:
	mov	[idlemem],eax	  ; eax == [timer_ticks]
	popad
	ret

uglobal
  idlemem		dd   0x0
  idleuse		dd   0x0
  idleusesec		dd   0x0
  check_idle_semaphore	dd   0x0
endg



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


include "kernel32.inc"


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

reserve_irqs_ports:
	; removed
	ret

setirqreadports:
	; removed
	ret

iglobal
  process_number dd 0x1
endg

set_variables:

	mov   ecx,0x100 		      ; flush port 0x60
.fl60:	in    al,0x60
	loop  .fl60
	push  eax

	mov   ax,[BOOT_VAR+0x900c]
	shr   ax,1
	shl   eax,16
	mov   ax,[BOOT_VAR+0x900A]
	shr   ax,1
	mov   [MOUSE_X],eax

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

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

     ;!! IP 04.02.2005:
	mov   byte [DONT_SWITCH],al ; change task if possible
	pop   eax
	ret

align 4
;input  eax=43,bl-byte of output, ecx - number of port
sys_outport:
     and   [esp+32],dword 1	; for backward compatibility: operation failed
    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

align 4

sys_setup:

; 1=roland mpu midi base , base io address
; 2=keyboard   1, base kaybap 2, shift keymap, 9 country 1eng 2fi 3ger 4rus
; 3=cd base    1, pri.master 2, pri slave 3 sec master, 4 sec slave
; 5=system language, 1eng 2fi 3ger 4rus
; 7=hd base    1, pri.master 2, pri slave 3 sec master, 4 sec slave
; 8=fat32 partition in hd
; 9
; 10 = sound dma channel
; 11 = enable lba read
; 12 = enable pci access


	and  [esp+32],dword 0
	dec	ebx				; MIDI
	jnz  nsyse1
	cmp  ecx,0x100

	jb   nsyse1
	mov	esi,65535
	cmp	esi,ecx

	jb   nsyse1
	mov  [midi_base],cx	;bx
	mov  word [mididp],cx	;bx
	inc  cx 		;bx
	mov  word [midisp],cx	;bx
	ret

iglobal
midi_base dw 0
endg

   nsyse1:
	dec	ebx				 ; KEYBOARD
	jnz  nsyse2
	mov  edi,[TASK_BASE]
	mov  eax,[edi+TASKDATA.mem_start]
	add  eax,edx

	dec	ecx
	jnz  kbnobase
	mov  ebx,keymap
	mov  ecx,128
	call memmove
	ret
   kbnobase:
	dec  ecx
	jnz  kbnoshift

	mov  ebx,keymap_shift
	mov  ecx,128
	call memmove
	ret
   kbnoshift:
	dec  ecx
	jnz  kbnoalt
	mov  ebx,keymap_alt
	mov  ecx,128
	call memmove
	ret
   kbnoalt:
	sub  ecx,6
	jnz  kbnocountry
	mov  word [keyboard],dx
	ret
   kbnocountry:
	mov  [esp+32],dword 1
	ret
   nsyse2:
	dec  ebx			    ; CD
	jnz  nsyse4

	test ecx,ecx
	jz   nosesl

	cmp  ecx, 4
	ja   nosesl
	mov  [cd_base],cl

	dec	ecx
	jnz  noprma
	mov  [cdbase],0x1f0
	mov  [cdid],0xa0
   noprma:

	dec	ecx
	jnz  noprsl
	mov  [cdbase],0x1f0
	mov  [cdid],0xb0
   noprsl:
	dec	ecx
	jnz  nosema
	mov  [cdbase],0x170
	mov  [cdid],0xa0
   nosema:
	dec	ecx
	jnz  nosesl
	mov  [cdbase],0x170
	mov  [cdid],0xb0
   nosesl:
	ret

iglobal
cd_base db 0

endg
   nsyse4:

	sub  ebx,2		 ; SYSTEM LANGUAGE
	jnz  nsyse5
	mov  [syslang],ecx
	ret
   nsyse5:

	sub  ebx,2		; HD BASE
	jnz  nsyse7

	test ecx,ecx
	jz   nosethd

	cmp  ecx,4
	ja   nosethd
	mov  [hd_base],cl

	cmp  ecx,1
	jnz  noprmahd
	mov  [hdbase],0x1f0
	and  dword [hdid],0x0
	mov  dword [hdpos],ecx
;     call set_FAT32_variables
   noprmahd:

	cmp  ecx,2
	jnz  noprslhd
	mov  [hdbase],0x1f0
	mov  [hdid],0x10
	mov  dword [hdpos],ecx
;     call set_FAT32_variables
   noprslhd:

	cmp  ecx,3
	jnz  nosemahd
	mov  [hdbase],0x170
	and  dword [hdid],0x0
	mov  dword [hdpos],ecx
;     call set_FAT32_variables
   nosemahd:

	cmp  ecx,4
	jnz  noseslhd
	mov  [hdbase],0x170
	mov  [hdid],0x10
	mov  dword [hdpos],ecx
;     call set_FAT32_variables
   noseslhd:
	call  reserve_hd1
	call  reserve_hd_channel
	call  free_hd_channel
	and   dword [hd1_status],0	  ; free
   nosethd:
	ret

iglobal
hd_base db 0
endg

nsyse7:

;     cmp  eax,8                      ; HD PARTITION
	dec  ebx
	jnz  nsyse8
	mov  [fat32part],ecx
;     call set_FAT32_variables
	call  reserve_hd1
	call  reserve_hd_channel
	call  free_hd_channel
;       pusha
	call  choice_necessity_partition_1
;       popa
	and dword [hd1_status],0	; free
	ret

nsyse8:
;     cmp  eax,11                     ; ENABLE LBA READ
	and  ecx,1
	sub  ebx,3
	jnz  no_set_lba_read
	mov  [lba_read_enabled],ecx
	ret

no_set_lba_read:
;     cmp  eax,12                     ; ENABLE PCI ACCESS
	dec  ebx
	jnz  no_set_pci_access
	mov  [pci_access_enabled],ecx
	ret
no_set_pci_access:

;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
;include 'vmodeint.inc'
;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

sys_setup_err:
	or  [esp+32],dword -1
	ret

align 4

sys_getsetup:

; 1=roland mpu midi base , base io address
; 2=keyboard   1, base kaybap 2, shift keymap, 9 country 1eng 2fi 3ger 4rus
; 3=cd base    1, pri.master 2, pri slave 3 sec master, 4 sec slave
; 5=system language, 1eng 2fi 3ger 4rus
; 7=hd base    1, pri.master 2, pri slave 3 sec master, 4 sec slave
; 8=fat32 partition in hd
; 9=get hs timer tic

;     cmp  eax,1
	dec	ebx
	jnz  ngsyse1
	movzx eax,[midi_base]
	mov  [esp+32],eax
	ret
ngsyse1:
;     cmp  eax,2
	dec	ebx
	jnz  ngsyse2

	mov  edi,[TASK_BASE]
	mov  ebx,[edi+TASKDATA.mem_start]
	add  ebx,edx

;     cmp  ebx,1
	dec	ecx
	jnz  kbnobaseret
	mov  eax,keymap
	mov  ecx,128
	call memmove
	ret
kbnobaseret:
;     cmp  ebx,2
	dec	ecx
	jnz  kbnoshiftret

	mov  eax,keymap_shift
	mov  ecx,128
	call memmove
	ret
kbnoshiftret:
;     cmp  ebx,3
	dec	ecx
	jne  kbnoaltret

	mov  eax,keymap_alt
	mov  ecx,128
	call memmove
	ret
kbnoaltret:
;     cmp  ebx,9
	sub	ecx,6
	jnz  ngsyse2
	movzx eax,word [keyboard]
	mov  [esp+32],eax
	ret


ngsyse2:
;         cmp  eax,3
	dec	ebx
	jnz  ngsyse3
	movzx eax,[cd_base]
	mov  [esp+32],eax
	ret
ngsyse3:
;         cmp  eax,5
	sub	ebx,2
	jnz  ngsyse5
	mov  eax,[syslang]
	mov  [esp+32],eax
	ret
ngsyse5:
;     cmp  eax,7
	sub	ebx,2
	jnz  ngsyse7
	movzx eax,[hd_base]
	mov  [esp+32],eax
	ret
ngsyse7:
;     cmp  eax,8
	dec	ebx
	jnz  ngsyse8
	mov eax,[fat32part]
	mov  [esp+32],eax
	ret
ngsyse8:
;     cmp  eax,9
	dec	ebx
	jnz  ngsyse9
	mov  eax,[timer_ticks] ;[0xfdf0]
	mov  [esp+32],eax
	ret
ngsyse9:
;     cmp  eax,11
	sub	ebx,2
	jnz  ngsyse11
	mov eax,[lba_read_enabled]
	mov  [esp+32],eax
	ret
ngsyse11:
;     cmp  eax,12
	dec	ebx
	jnz  ngsyse12
	mov eax,[pci_access_enabled]
	mov  [esp+32],eax
	ret
ngsyse12:
	mov  [esp+32],dword 1
	ret


get_timer_ticks:
	mov eax,[timer_ticks]
	ret

iglobal
align 4
mousefn dd msscreen, mswin, msbutton, msset
	dd app_load_cursor
	dd app_set_cursor
	dd app_delete_cursor
	dd msz
endg

readmousepos:

; eax=0 screen relative
; eax=1 window relative
; eax=2 buttons pressed
; eax=3 set mouse pos   ; reserved
; eax=4 load cursor
; eax=5 set cursor
; eax=6 delete cursor   ; reserved
; eax=7 get mouse_z

	   cmp ebx, 7
	   ja msset
	   jmp [mousefn+ebx*4]
msscreen:
	   mov	eax,[MOUSE_X]
	   shl	eax,16
	   mov	ax,[MOUSE_Y]
	   mov	[esp+36-4],eax
	   ret
mswin:
	   mov	eax,[MOUSE_X]
	   shl	eax,16
	   mov	ax,[MOUSE_Y]
	   mov	esi,[TASK_BASE]
	   mov	bx, word [esi-twdw+WDATA.box.left]
	   shl	ebx,16
	   mov	bx, word [esi-twdw+WDATA.box.top]
	   sub	eax,ebx

	   mov	edi,[CURRENT_TASK]
	   shl	edi,8
	   sub	ax,word[edi+SLOT_BASE+APPDATA.wnd_clientbox.top]
	   rol	eax,16
	   sub	ax,word[edi+SLOT_BASE+APPDATA.wnd_clientbox.left]
	   rol	eax,16
	   mov	[esp+36-4],eax
	   ret
msbutton:
	   movzx eax,byte [BTN_DOWN]
	   mov	[esp+36-4],eax
	   ret
msz:
	   mov	 edi, [TASK_COUNT]
	   movzx edi, word [WIN_POS + edi*2]
	   cmp	 edi, [CURRENT_TASK]
	   jne	 @f
	   mov	 ax,[MOUSE_SCROLL_H]
	   shl	 eax,16
	   mov	 ax,[MOUSE_SCROLL_V]
	   mov	 [esp+36-4],eax
	   and	 [MOUSE_SCROLL_H],word 0
	   and	 [MOUSE_SCROLL_V],word 0
	   ret
       @@:
	   and	[esp+36-4],dword 0
;           ret
msset:
	   ret

app_load_cursor:
	   cmp ecx, OS_BASE
	   jae msset
	   stdcall load_cursor, ecx, edx
	   mov [esp+36-4], eax
	   ret

app_set_cursor:
	   stdcall set_cursor, ecx
	   mov [esp+36-4], eax
	   ret

app_delete_cursor:
	   stdcall delete_cursor, ecx
	   mov [esp+36-4], eax
	   ret

is_input:

   push edx
   mov	dx,word [midisp]
   in	al,dx
   and	al,0x80
   pop	edx
   ret

is_output:

   push edx
   mov	dx,word [midisp]
   in	al,dx
   and	al,0x40
   pop	edx
   ret


get_mpu_in:

   push edx
   mov	dx,word [mididp]
   in	al,dx
   pop	edx
   ret


put_mpu_out:

   push edx
   mov	dx,word [mididp]
   out	dx,al
   pop	edx
   ret



align 4

sys_midi:
	cmp  [mididp],0
	jnz  sm0
	mov  [esp+36],dword 1
	ret
sm0:
	and  [esp+36],dword 0
	dec  ebx
	jnz  smn1
 ;    call setuart
su1:
	call is_output
	test al,al
	jnz  su1
	mov  dx,word [midisp]
	mov  al,0xff
	out  dx,al
su2:
	mov  dx,word [midisp]
	mov  al,0xff
	out  dx,al
	call is_input
	test al,al
	jnz  su2
	call get_mpu_in
	cmp  al,0xfe
	jnz  su2
su3:
	call is_output
	test  al,al
	jnz  su3
	mov  dx,word [midisp]
	mov  al,0x3f
	out  dx,al
	ret
smn1:
	dec  ebx
	jnz  smn2
sm10:
	call get_mpu_in
	call is_output
	test al,al
	jnz  sm10
	mov  al,bl
	call put_mpu_out
	smn2:
	ret

detect_devices:
;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
;include 'detect/commouse.inc'
;include 'detect/ps2mouse.inc'
;include 'detect/dev_fd.inc'
;include 'detect/dev_hdcd.inc'
;include 'detect/sear_par.inc'
;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
    ret

sys_end:

     mov ecx, [current_slot]
     mov eax, [ecx+APPDATA.tls_base]
     test eax, eax
     jz @F

     stdcall user_free, eax
@@:

     mov   eax,[TASK_BASE]
     mov   [eax+TASKDATA.state], 3  ; terminate this program

    waitterm:		 ; wait here for termination
     mov   ebx,100
     call  delay_hs
     jmp   waitterm

iglobal
align 4
sys_system_table:
	dd	exit_for_anyone 	; 1 = obsolete
	dd	sysfn_terminate 	; 2 = terminate thread
	dd	sysfn_activate		; 3 = activate window
	dd	sysfn_getidletime	; 4 = get idle time
	dd	sysfn_getcpuclock	; 5 = get cpu clock
	dd	sysfn_saveramdisk	; 6 = save ramdisk
	dd	sysfn_getactive 	; 7 = get active window
	dd	sysfn_sound_flag	; 8 = get/set sound_flag
	dd	sysfn_shutdown		; 9 = shutdown with parameter
	dd	sysfn_minimize		; 10 = minimize window
	dd	sysfn_getdiskinfo	; 11 = get disk subsystem info
	dd	sysfn_lastkey		; 12 = get last pressed key
	dd	sysfn_getversion	; 13 = get kernel version
	dd	sysfn_waitretrace	; 14 = wait retrace
	dd	sysfn_centermouse	; 15 = center mouse cursor
	dd	sysfn_getfreemem	; 16 = get free memory size
	dd	sysfn_getallmem 	; 17 = get total memory size
	dd	sysfn_terminate2	; 18 = terminate thread using PID
					;                 instead of slot
	dd	sysfn_mouse_acceleration; 19 = set/get mouse acceleration
	dd	sysfn_meminfo		; 20 = get extended memory info
	dd	sysfn_pid_to_slot	; 21 = get slot number for pid
	dd	sysfn_min_rest_window	; 22 = minimize and restore any window
sysfn_num = ($ - sys_system_table)/4
endg

sys_system:
	dec	ebx
	cmp	ebx, sysfn_num
	jae	@f
	jmp	dword [sys_system_table + ebx*4]
@@:
	ret


sysfn_shutdown: 	 ; 18.9 = system shutdown
     cmp  ecx,1
     jl   exit_for_anyone
     cmp  ecx,4
     jg   exit_for_anyone
     mov  [BOOT_VAR+0x9030],cl

     mov  eax,[TASK_COUNT]
     mov  [SYS_SHUTDOWN],al
     mov  [shutdown_processes],eax
     and  dword [esp+32], 0
 exit_for_anyone:
     ret
  uglobal
   shutdown_processes: dd 0x0
  endg

sysfn_terminate:	; 18.2 = TERMINATE
     cmp  ecx,2
     jb   noprocessterminate
     mov  edx,[TASK_COUNT]
     cmp  ecx,edx
     ja   noprocessterminate
     mov  eax,[TASK_COUNT]
     shl  ecx,5
     mov  edx,[ecx+CURRENT_TASK+TASKDATA.pid]
     add  ecx,CURRENT_TASK+TASKDATA.state
     cmp  byte [ecx], 9
     jz   noprocessterminate

     ;call MEM_Heap_Lock      ;guarantee that process isn't working with heap
     mov  [ecx],byte 3	     ; clear possible i40's
     ;call MEM_Heap_UnLock

     cmp  edx,[application_table_status]    ; clear app table stat
     jne  noatsc

     and  [application_table_status],0
   noatsc:
   noprocessterminate:
     ret

sysfn_terminate2:
;lock application_table_status mutex
.table_status:
    cli
    cmp    [application_table_status],0
    je	   .stf
    sti
    call   change_task
    jmp    .table_status
.stf:
    call   set_application_table_status
    mov    eax,ecx
    call   pid_to_slot
    test   eax,eax
    jz	   .not_found
    mov    ecx,eax
    cli
    call   sysfn_terminate
    and    [application_table_status],0
    sti
    and    dword [esp+32],0
    ret
.not_found:
    mov    [application_table_status],0
    or	   dword [esp+32],-1
    ret

sysfn_activate: 	; 18.3 = ACTIVATE WINDOW
     cmp  ecx,2
     jb   .nowindowactivate
     cmp  ecx,[TASK_COUNT]
     ja   .nowindowactivate

     mov   [window_minimize], 2   ; restore window if minimized

     movzx esi, word [WIN_STACK + ecx*2]
     cmp   esi, [TASK_COUNT]
     je    .nowindowactivate ; already active

     mov   edi, ecx
     shl   edi, 5
     add   edi, window_data
     movzx esi, word [WIN_STACK + ecx * 2]
     lea   esi, [WIN_POS + esi * 2]
     call  waredraw
.nowindowactivate:
     ret

sysfn_getidletime:		; 18.4 = GET IDLETIME
     mov  eax,[idleusesec]
     mov  [esp+32], eax
     ret

sysfn_getcpuclock:		; 18.5 = GET TSC/SEC
     mov  eax,[CPU_FREQ]
     mov  [esp+32], eax
     ret

;  SAVE ramdisk to /hd/1/menuet.img
;!!!!!!!!!!!!!!!!!!!!!!!!
   include 'blkdev/rdsave.inc'
;!!!!!!!!!!!!!!!!!!!!!!!!
align 4
sysfn_getactive:	; 18.7 = get active window
     mov  eax, [TASK_COUNT]
   movzx  eax, word [WIN_POS + eax*2]
     mov  [esp+32],eax
     ret

sysfn_sound_flag:	; 18.8 = get/set sound_flag
;     cmp  ecx,1
     dec  ecx
     jnz  nogetsoundflag
     movzx  eax,byte [sound_flag] ; get sound_flag
     mov  [esp+32],eax
     ret
 nogetsoundflag:
;     cmp  ecx,2
     dec  ecx
     jnz  nosoundflag
     xor  byte [sound_flag], 1
 nosoundflag:
     ret

sysfn_minimize: 	; 18.10 = minimize window
     mov   [window_minimize],1
     ret
align 4
sysfn_getdiskinfo:	; 18.11 = get disk info table
;     cmp  ecx,1
     dec  ecx
     jnz  full_table
  small_table:
     call for_all_tables
     mov ecx,10
     cld
     rep movsb
     ret
   for_all_tables:
     mov edi,edx
     mov esi,DRIVE_DATA
     ret
  full_table:
;     cmp  ecx,2
     dec  ecx
     jnz  exit_for_anyone
     call for_all_tables
     mov ecx,16384
     cld
     rep movsd
     ret

sysfn_lastkey:		; 18.12 = return 0 (backward compatibility)
	and	dword [esp+32], 0
	ret

sysfn_getversion:	; 18.13 = get kernel ID and version
     mov edi,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
; removed here by <Lrz>
;     call  mouse_centered
;* mouse centered - start code- Mario79
;mouse_centered:
;        push  eax
	mov   eax,[Screen_Max_X]
	shr   eax,1
	mov   [MOUSE_X],ax
	mov   eax,[Screen_Max_Y]
	shr   eax,1
	mov   [MOUSE_Y],ax
;        ret
;* mouse centered - end code- Mario79
	xor   eax,eax
	and   [esp+32],eax
;        pop   eax

     ret
align 4
sysfn_mouse_acceleration: ; 18.19 = set/get mouse features
     test ecx,ecx  ; get mouse speed factor
     jnz  .set_mouse_acceleration
     xor  eax,eax
     mov  ax,[mouse_speed_factor]
     mov  [esp+32],eax
     ret
 .set_mouse_acceleration:
;     cmp  ecx,1  ; set mouse speed factor
     dec  ecx
     jnz  .get_mouse_delay
     mov  [mouse_speed_factor],dx
     ret
 .get_mouse_delay:
;     cmp  ecx,2  ; get mouse delay
     dec  ecx
     jnz  .set_mouse_delay
     mov  eax,[mouse_delay]
     mov  [esp+32],eax
     ret
 .set_mouse_delay:
;     cmp  ecx,3  ; set mouse delay
     dec  ecx
     jnz  .set_pointer_position
     mov  [mouse_delay],edx
     ret
 .set_pointer_position:
;     cmp  ecx,4  ; set mouse pointer position
     dec   ecx
     jnz  .set_mouse_button
     cmp   dx, word[Screen_Max_Y]
     ja    .end

     rol   edx,16
     cmp   dx, word[Screen_Max_X]
     ja    .end
     mov   [MOUSE_X], edx
     ret
 .set_mouse_button:
;     cmp   ecx,5  ; set mouse button features
     dec   ecx
     jnz  .end
     mov   [BTN_DOWN],dl
     mov   [mouse_active],1
 .end:
     ret

sysfn_getfreemem:
     mov eax, [pg_data.pages_free]
     shl eax, 2
     mov [esp+32],eax
     ret

sysfn_getallmem:
     mov  eax,[MEM_AMOUNT]
     shr eax, 10
     mov  [esp+32],eax
     ret

; // Alver, 2007-22-08 // {
sysfn_pid_to_slot:
     mov   eax, ecx
     call  pid_to_slot
     mov   [esp+32], eax
     ret

sysfn_min_rest_window:
     pushad
     mov   eax, edx	 ; ebx - operating
     shr   ecx, 1
     jnc    @f
     call  pid_to_slot
@@:
     or    eax, eax	 ; eax - number of slot
     jz    .error
     cmp   eax, 255	    ; varify maximal slot number
     ja    .error
     movzx eax, word [WIN_STACK + eax*2]
     shr   ecx, 1
     jc    .restore
 ; .minimize:
     call  minimize_window
     jmp   .exit
.restore:
     call  restore_minimized_window
.exit:
     popad
     xor   eax, eax
     mov   [esp+32], eax
     ret
.error:
     popad
     xor   eax, eax
     dec   eax
     mov   [esp+32], eax
     ret
; } \\ Alver, 2007-22-08 \\

uglobal
;// mike.dld, 2006-29-01 [
screen_workarea RECT
;// mike.dld, 2006-29-01 ]
window_minimize db 0
sound_flag	db 0
endg

iglobal
version_inf:
  db 0,7,7,0  ; version 0.7.7.0
  db 0		;reserved
  dd __REV__
version_end:
endg

sys_cachetodiskette:		; << removed
	mov	[esp + 32], ebx
	ret

uglobal
;  bgrchanged  dd  0x0
align 4
bgrlockpid dd 0
bgrlock db 0
endg

;===============================  SysFn 15  ================================
sys_background:

    cmp   ebx,1 			   ; BACKGROUND SIZE
    jnz   nosb1
    test  ecx,ecx
;    cmp   ecx,0
    jz	  sbgrr
    test  edx,edx
;    cmp   edx,0
    jz	  sbgrr
@@:
;;Maxis use atomic bts for mutexes  4.4.2009
	bts	dword [bgrlock], 0
	jnc	@f
	call	change_task
	jmp	@b
@@:
    mov   [BgrDataWidth],ecx
    mov   [BgrDataHeight],edx
;    mov   [bgrchanged],1

    pushad
; return memory for old background
	mov	eax, [img_background]
	cmp	eax, static_background_data
	jz	@f
	stdcall kernel_free, eax
@@:
; calculate RAW size
    xor  eax,eax
    inc  eax
    cmp  [BgrDataWidth],eax
    jae   @f
    mov [BgrDataWidth],eax
@@:
    cmp  [BgrDataHeight],eax
    jae   @f
    mov [BgrDataHeight],eax
@@:
    mov  eax,[BgrDataWidth]
    imul eax,[BgrDataHeight]
    lea  eax,[eax*3]
    mov  [mem_BACKGROUND],eax
; get memory for new background
    stdcall kernel_alloc, eax
    test eax, eax
    jz .memfailed
    mov [img_background], eax
    jmp .exit
.memfailed:
; revert to static monotone data
	mov	[img_background], static_background_data
	xor	eax, eax
	inc	eax
	mov	[BgrDataWidth], eax
	mov	[BgrDataHeight], eax
	mov	[mem_BACKGROUND], 4
.exit:
    popad
	mov	[bgrlock], 0

  sbgrr:
    ret

nosb1:

    cmp   ebx,2 			   ; SET PIXEL
    jnz   nosb2

    mov   eax, [img_background]
    test  ecx, ecx
    jz	  @f
    cmp   eax, static_background_data

    jz	  .ret
@@:
    mov ebx, [mem_BACKGROUND]
    add ebx, 4095
    and ebx, -4096
    sub ebx, 4
    cmp   ecx, ebx
    ja	 .ret

    mov   ebx,[eax+ecx]
    and   ebx,0xFF000000 ;255*256*256*256
    and   edx,0x00FFFFFF ;255*256*256+255*256+255
    add   edx,ebx
    mov   [eax+ecx],edx
.ret:
    ret
nosb2:

    cmp   ebx,3 			   ; DRAW BACKGROUND
    jnz   nosb3
draw_background_temp:
;    cmp   [bgrchanged],1 ;0
;    je    nosb31
;draw_background_temp:
;    mov   [bgrchanged],1 ;0
    mov    [background_defined], 1
    mov    byte[BACKGROUND_CHANGED], 1
    call  force_redraw_background
   nosb31:
    ret
  nosb3:

    cmp   ebx,4 			   ; TILED / STRETCHED
    jnz   nosb4
    cmp   ecx,[BgrDrawMode]
    je	  nosb41
    mov   [BgrDrawMode],ecx
;    mov   [bgrchanged],1
   nosb41:
    ret
  nosb4:

    cmp   ebx,5 			   ; BLOCK MOVE TO BGR
    jnz   nosb5
    cmp   [img_background], static_background_data
    jnz   @f
    test  edx, edx
    jnz   .fin
    cmp   esi, 4
    ja	  .fin
  @@:
  ; bughere
    mov   eax, ecx
    mov   ebx, edx
    add   ebx, [img_background]   ;IMG_BACKGROUND
    mov   ecx, esi
    call  memmove
  .fin:
    ret
  nosb5:

	cmp	ebx, 6
	jnz	nosb6
;;Maxis use atomic bts for mutex 4.4.2009
@@:
	bts	dword [bgrlock], 0
	jnc	@f
	call	change_task
	jmp	@b
@@:
	mov	eax, [CURRENT_TASK]
	mov	[bgrlockpid], eax
	cmp	[img_background], static_background_data
	jz	.nomem
	stdcall user_alloc, [mem_BACKGROUND]
	mov	[esp+32], eax
	test	eax, eax
	jz	.nomem
	mov	ebx, eax
	shr	ebx, 12
	or	dword [page_tabs+(ebx-1)*4], DONT_FREE_BLOCK
	mov	esi, [img_background]
	shr	esi, 12
	mov	ecx, [mem_BACKGROUND]
	add	ecx, 0xFFF
	shr	ecx, 12
.z:
	mov	eax, [page_tabs+ebx*4]
	test	al, 1
	jz	@f
	call	free_page
@@:
	mov	eax, [page_tabs+esi*4]
	or	al, PG_UW
	mov	[page_tabs+ebx*4], eax
	mov	eax, ebx
	shl	eax, 12
	invlpg	[eax]
	inc	ebx
	inc	esi
	loop	.z
	ret
.nomem:
	and	[bgrlockpid], 0
	mov	[bgrlock], 0
nosb6:
	cmp	ebx, 7
	jnz	nosb7
	cmp	[bgrlock], 0
	jz	.err
	mov	eax, [CURRENT_TASK]
	cmp	[bgrlockpid], eax
	jnz	.err
	mov	eax, ecx
	mov	ebx, ecx
	shr	eax, 12
	mov	ecx, [page_tabs+(eax-1)*4]
	test	cl, USED_BLOCK+DONT_FREE_BLOCK
	jz	.err
	jnp	.err
	push	eax
	shr	ecx, 12
	dec	ecx
@@:
	and	dword [page_tabs+eax*4], 0
	mov	edx, eax
	shl	edx, 12
	push eax
	invlpg	[edx]
	pop eax
	inc	eax
	loop	@b
	pop	eax
	and	dword [page_tabs+(eax-1)*4], not DONT_FREE_BLOCK
	stdcall user_free, ebx
	mov	[esp+32], eax
	and	[bgrlockpid], 0
	mov	[bgrlock], 0
	ret
.err:
	and	dword [esp+32], 0
	ret

nosb7:
    ret

;===============================  SysFn 39  ================================
align 4

sys_getbackground:
    dec   ebx
    jnz   nogb1
    mov   eax,[BgrDataWidth]
    shl   eax,16
    mov   ax,[BgrDataHeight]
    mov   [esp+32],eax
    ret

nogb1:
;    cmp   eax,2                                  ; PIXEL
    dec   ebx
    jnz   nogb2

	mov	eax, [img_background]
	test	ecx, ecx
	jz	@f
	cmp	eax, static_background_data
	jz	.ret
@@:
    mov ebx, [mem_BACKGROUND]
    add ebx, 4095
    and ebx, -4096
    sub ebx, 4
    cmp ecx, ebx
    ja	.ret

    mov   eax,[ecx+eax]

    and   eax, 0xFFFFFF
    mov   [esp+32],eax
.ret:
    ret
  nogb2:

;    cmp   eax,4                                  ; TILED / STRETCHED
    dec   ebx
    dec   ebx
    jnz   nogb4
    mov   eax,[BgrDrawMode]
  nogb4:
    mov   [esp+32],eax
    ret

;===========================================

force_redraw_background:
    and   [draw_data+32 + RECT.left], 0
    and   [draw_data+32 + RECT.top], 0
    push  eax ebx
    mov   eax,[Screen_Max_X]
    mov   ebx,[Screen_Max_Y]
    mov   [draw_data+32 + RECT.right],eax
    mov   [draw_data+32 + RECT.bottom],ebx
    pop   ebx eax
    inc   byte[REDRAW_BACKGROUND]
    ret
;===========================================


align 4

sys_getkey:
	mov	[esp + 32],dword 1
	; test main buffer
	mov	ebx, [CURRENT_TASK]			     ; TOP OF WINDOW STACK
	movzx	ecx, word [WIN_STACK + ebx * 2]
	mov	edx, [TASK_COUNT]
	cmp	ecx, edx
	jne	.finish
	cmp	[KEY_COUNT], byte 0
	je	.finish
	movzx	eax, byte [KEY_BUFF]
	shl	eax, 8
	push	eax
	dec	byte [KEY_COUNT]
	and	byte [KEY_COUNT], 127
	movzx	ecx, byte [KEY_COUNT]
	add	ecx, 2
	mov	eax, KEY_BUFF + 1
	mov	ebx, KEY_BUFF
	call	memmove
	pop	eax
.ret_eax:
	mov	[esp + 32], eax
	ret
.finish:
; test hotkeys buffer
	mov	ecx, hotkey_buffer
@@:
	cmp	[ecx], ebx
	jz	.found
	add	ecx, 8
	cmp	ecx, hotkey_buffer + 120 * 8
	jb	@b
	ret
.found:
	mov	ax, [ecx + 6]
	shl	eax, 16
	mov	ah, [ecx + 4]
	mov	al, 2
	and	dword [ecx + 4], 0
	and	dword [ecx], 0
	jmp	.ret_eax

align 4

sys_getbutton:

	mov	ebx, [CURRENT_TASK]			    ; TOP OF WINDOW STACK
	mov	[esp + 32], dword 1
	movzx	ecx, word [WIN_STACK + ebx * 2]
	mov	edx, [TASK_COUNT] ; less than 256 processes
	cmp	ecx, edx
	jne	.exit
	movzx	eax, byte [BTN_COUNT]
	test	eax, eax
	jz	.exit
	mov	eax, [BTN_BUFF]
	and	al, 0xFE				    ; delete left button bit
	mov	[BTN_COUNT], byte 0
	mov	[esp + 32], eax
.exit:
	ret


align 4

sys_cpuusage:

;  RETURN:
;
;  +00 dword     process cpu usage
;  +04  word     position in windowing stack
;  +06  word     windowing stack value at current position (cpu nro)
;  +10 12 bytes  name
;  +22 dword     start in mem
;  +26 dword     used mem
;  +30 dword     PID , process idenfification number
;

    cmp  ecx,-1 	; who am I ?
    jne  .no_who_am_i
    mov  ecx,[CURRENT_TASK]
  .no_who_am_i:
	cmp	ecx, max_processes
	ja	.nofillbuf

; +4: word: position of the window of thread in the window stack
	mov	ax, [WIN_STACK + ecx * 2]
	mov	[ebx+4], ax
; +6: word: number of the thread slot, which window has in the window stack
;           position ecx (has no relation to the specific thread)
	mov	ax, [WIN_POS + ecx * 2]
	mov	[ebx+6], ax

	shl	ecx, 5

; +0: dword: memory usage
	mov	eax, [ecx+CURRENT_TASK+TASKDATA.cpu_usage]
	mov	[ebx], eax
; +10: 11 bytes: name of the process
	push	ecx
	lea	eax, [ecx*8+SLOT_BASE+APPDATA.app_name]
	add	ebx, 10
	mov	ecx, 11
	call	memmove
	pop	ecx

; +22: address of the process in memory
; +26: size of used memory - 1
	push	edi
	lea	edi, [ebx+12]
	xor	eax, eax
	mov	edx, 0x100000*16
	cmp	ecx, 1 shl 5
	je	.os_mem
	mov	edx, [SLOT_BASE+ecx*8+APPDATA.mem_size]
	mov	eax, std_application_base_address
.os_mem:
	stosd
	lea	eax, [edx-1]
	stosd

; +30: PID/TID
	mov	eax, [ecx+CURRENT_TASK+TASKDATA.pid]
	stosd

    ; window position and size
	push	esi
	lea	esi, [ecx + window_data + WDATA.box]
	movsd
	movsd
	movsd
	movsd

    ; Process state (+50)
	mov	eax, dword [ecx+CURRENT_TASK+TASKDATA.state]
	stosd

    ; Window client area box
	lea	esi, [ecx*8 + SLOT_BASE + APPDATA.wnd_clientbox]
	movsd
	movsd
	movsd
	movsd

    ; Window state
	mov	al, [ecx+window_data+WDATA.fl_wstate]
	stosb

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

	pop	esi
	pop	edi

.nofillbuf:
    ; return number of processes

    mov    eax,[TASK_COUNT]
    mov    [esp+32],eax
    ret

align 4
sys_clock:
	cli
  ; Mikhail Lisovin  xx Jan 2005
  @@:	mov   al, 10
	out   0x70, al
	in    al, 0x71
	test  al, al
	jns   @f
	mov   esi, 1
	call  delay_ms
	jmp   @b
  @@:
  ; end Lisovin's fix

	xor   al,al	      ; seconds
	out   0x70,al
	in    al,0x71
	movzx ecx,al
	mov   al,02	      ; minutes
	shl   ecx,16
	out   0x70,al
	in    al,0x71
	movzx edx,al
	mov   al,04	      ; hours
	shl   edx,8
	out   0x70,al
	in    al,0x71
	add   ecx,edx
	movzx edx,al
	add   ecx,edx
	sti
	mov	[esp + 32], ecx
	ret


align 4

sys_date:

	cli
  @@:	mov   al, 10
	out   0x70, al
	in    al, 0x71
	test  al, al
	jns   @f
	mov   esi, 1
	call  delay_ms
	jmp   @b
  @@:

	mov	ch,0
	mov	al,7		; date
	out	0x70,al
	in	al,0x71
	mov	cl,al
	mov	al,8		; month
	shl	ecx,16
	out	0x70,al
	in	al,0x71
	mov	ch,al
	mov	al,9		; year
	out	0x70,al
	in	al,0x71
	mov	cl,al
	sti
	mov	[esp+32], ecx
	ret


; redraw status

sys_redrawstat:
	cmp	ebx, 1
	jne	no_widgets_away
	; buttons away
	mov	ecx,[CURRENT_TASK]
  sys_newba2:
	mov	edi,[BTN_ADDR]
	cmp	[edi], dword 0	; empty button list ?
	je	end_of_buttons_away
	movzx	ebx, word [edi]
	inc	ebx
	mov	eax,edi
  sys_newba:
	dec	ebx
	jz	end_of_buttons_away

	add	eax, 0x10
	cmp	cx, [eax]
	jnz	sys_newba

	push	eax ebx ecx
	mov	ecx,ebx
	inc	ecx
	shl	ecx, 4
	mov	ebx, eax
	add	eax, 0x10
	call	memmove
	dec	dword [edi]
	pop	ecx ebx eax

	jmp	sys_newba2

  end_of_buttons_away:

	ret

  no_widgets_away:

	cmp	ebx, 2
	jnz	srl1

	mov	edx, [TASK_BASE]      ; return whole screen draw area for this app
	add	edx, draw_data - CURRENT_TASK
	mov	[edx + RECT.left], 0
	mov	[edx + RECT.top], 0
	mov	eax, [Screen_Max_X]

	mov	[edx + RECT.right], eax
	mov	eax, [Screen_Max_Y]
	mov	[edx + RECT.bottom], eax

  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
; check misc

checkmisc:

    cmp   [ctrl_alt_del], 1
    jne   nocpustart

	mov	ebp, cpustring
	call	fs_execute_from_sysdir

    mov   [ctrl_alt_del], 0

nocpustart:
    cmp   [mouse_active], 1
    jne   mouse_not_active
    mov   [mouse_active], 0
    xor   edi, edi
    mov   ecx,	[TASK_COUNT]
set_mouse_event:
    add   edi, 256
    or	  [edi+SLOT_BASE+APPDATA.event_mask], dword 100000b
    loop  set_mouse_event

mouse_not_active:
    cmp   byte[BACKGROUND_CHANGED], 0
    jz	  no_set_bgr_event
    xor   edi, edi
    mov   ecx, [TASK_COUNT]
set_bgr_event:
    add   edi, 256
    or	  [edi+SLOT_BASE+APPDATA.event_mask], 16
    loop  set_bgr_event
    mov   byte[BACKGROUND_CHANGED], 0
no_set_bgr_event:
    cmp   byte[REDRAW_BACKGROUND], 0		   ; background update ?
    jz	  nobackgr
    cmp    [background_defined], 0
    jz	  nobackgr
@@:
    call  drawbackground
    xor   eax, eax
    xchg  al, [REDRAW_BACKGROUND]
    test  al, al				   ; got new update request?
    jnz   @b
    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
    mov   [MOUSE_BACKGROUND],byte 0

nobackgr:

    ; system shutdown request

    cmp  [SYS_SHUTDOWN],byte 0
    je	 noshutdown

    mov  edx,[shutdown_processes]

    cmp  [SYS_SHUTDOWN],dl
    jne  no_mark_system_shutdown

    lea   ecx,[edx-1]
    mov   edx,OS_BASE+0x3040
    jecxz @f
markz:
    mov   [edx+TASKDATA.state],byte 3
    add   edx,0x20
    loop  markz
@@:

  no_mark_system_shutdown:

    call [_display.disable_mouse]

    dec  byte [SYS_SHUTDOWN]
    je	 system_shutdown

noshutdown:
    mov   eax,[TASK_COUNT]		    ; termination
    mov   ebx,TASK_DATA+TASKDATA.state
    mov   esi,1

newct:
    mov   cl,[ebx]
    cmp   cl,byte 3
    jz	  terminate
    cmp   cl,byte 4
    jz	  terminate

    add   ebx,0x20
    inc   esi
    dec   eax
    jnz   newct
    ret

; redraw screen
; eax , if process window_data base is eax, do not set flag/limits

redrawscreen:
	 pushad
	 push  eax

	 xor   ecx,ecx			; redraw flags for apps
       newdw2:

	 inc   ecx
	 push  ecx

	 mov   eax,ecx
	 shl   eax,5
	 add   eax,window_data

	 cmp   eax,[esp+4]
	 je    not_this_task
				   ; check if window in redraw area
	 mov   edi,eax

	 cmp   ecx,1		   ; limit for background
	 jz    bgli

	 mov   eax, [edi + WDATA.box.left]
	 mov   ebx, [edi + WDATA.box.top]
	 mov   ecx, [edi + WDATA.box.width]
	 mov   edx, [edi + WDATA.box.height]
	 add   ecx,eax
	 add   edx,ebx

	 mov   ecx,[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

	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
	@@:
	 mov   ebx,[draw_limits.top]
	 cmp   ebx,[eax+RECT.top]
	 jae   @f
	 mov   [eax+RECT.top],ebx
	 mov   dl, 1
	@@:
	 mov   ebx,[draw_limits.right]
	 cmp   ebx,[eax+RECT.right]
	 jbe   @f
	 mov   [eax+RECT.right],ebx
	 mov   dl, 1
	@@:
	 mov   ebx,[draw_limits.bottom]
	 cmp   ebx,[eax+RECT.bottom]
	 jbe   @f
	 mov   [eax+RECT.bottom],ebx
	 mov   dl, 1
	@@:
	 add   byte[REDRAW_BACKGROUND], dl
	 jmp   newdw8
	.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]


       newdw8:
       nobgrd:

	 mov   [eax + WDATA.fl_redraw],byte 1	 ; mark as redraw

       ricino:

       not_this_task:

	 pop   ecx

	 cmp   ecx,[TASK_COUNT]
	 jle   newdw2

	 pop  eax
	 popad

	 ret

calculatebackground:   ; background
	mov   edi, [_WinMapAddress]		   ; set os to use all pixels
	mov   eax, 0x01010101
	mov   ecx, [_WinMapSize]
	shr   ecx, 2
	rep   stosd

	mov   byte[REDRAW_BACKGROUND], 0	      ; do not draw background!
	mov   byte[BACKGROUND_CHANGED], 0

	ret

uglobal
  imax	  dd 0x0
endg

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

 cnt1:	in    al,0x61
	and   al,0x10
	cmp   al,ah
	jz    cnt1

	mov   ah,al
	loop  cnt1

	pop   ecx
	pop   eax

	ret

set_app_param:
	mov	edi, [TASK_BASE]
	mov	eax, [edi + TASKDATA.event_mask]
	mov	[edi + TASKDATA.event_mask], ebx
	mov	[esp+32], eax
	ret

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

	mov   edx,[timer_ticks]

      newtic:
	mov   ecx,[timer_ticks]
	sub   ecx,edx
	cmp   ecx,ebx
	jae   zerodelay

	call  change_task

	jmp   newtic

      zerodelay:
	pop   edx
	pop   ecx

	ret

align 16	;very often call this subrutine
memmove:       ; memory move in bytes
; eax = from
; ebx = to
; ecx = no of bytes
    test ecx, ecx
    jle  .ret

    push esi edi ecx

    mov  edi, ebx
    mov  esi, eax

    test ecx, not 11b
    jz	 @f

    push ecx
    shr  ecx, 2
    rep  movsd
    pop  ecx
    and  ecx, 11b
    jz	 .finish
  @@:
    rep  movsb

  .finish:
    pop  ecx edi esi
  .ret:
    ret


align 4

sys_programirq:
	; removed
    mov   dword [esp+32], 1	; operation failed
    ret


align 4

get_irq_data:
	; removed
     mov   dword [esp+32], -1
     ret


set_io_access_rights:
	;removed
     ret

r_f_port_area:
	; removed; always returns 0
     xor   eax, eax
     ret


reserve_free_irq:
     xor   esi, esi
     inc   esi
     cmp   ecx, 16
     jae   ril1

     push  ecx
     lea   ecx, [irq_owner + 4 * ecx]
     mov   edx, [ecx]
     mov   eax, [TASK_BASE]
     mov   edi, [eax + TASKDATA.pid]
     pop   eax
     dec   ebx
     jnz   reserve_irq

     cmp   edx, edi
     jne   ril1
     dec   esi
     mov   [ecx], esi

     jmp   ril1

  reserve_irq:
     cmp   dword [ecx], 0
     jne   ril1

     mov   ebx, [f_irqs + 4 * eax]

     stdcall attach_int_handler, eax, ebx, dword 0

     mov   [ecx], edi

     dec   esi
   ril1:
     mov   [esp+32], esi ; return in eax
     ret

iglobal
f_irqs:
     dd 0x0
     dd 0x0
     dd p_irq2
     dd p_irq3
     dd p_irq4
     dd p_irq5
     dd p_irq6
     dd p_irq7
     dd p_irq8
     dd p_irq9
     dd p_irq10
     dd p_irq11
     dd 0x0
     dd 0x0
     dd p_irq14
     dd p_irq15

endg

drawbackground:
;       inc   [mouse_pause]
;       call  draw_background    ; graph32.inc
;       dec   [mouse_pause]
;       call   [draw_pointer]
;       ret
       inc   [mouse_pause]
       cmp   [BgrDrawMode],dword 1
       jne   .bgrstr
       call  vesa20_drawbackground_tiled
	 jmp  @f
.bgrstr:
       call  vesa20_drawbackground_stretch
@@:
       dec   [mouse_pause]
       call   [draw_pointer]
       ret

; ====================================================================
if 0
; the new GFX sys

align 4
syscall_putimage:			; PutImage = SysFn07
sys_putimage:
     test  ecx,0x80008000		; ecx = { SizeX | SizeY }
     jnz   .exit			; edx = { OrigX | OrigY }
     test  ecx,0x0000FFFF		; ebx points to the 24bpp-image
     jz    .exit
     test  ecx,0xFFFF0000
     jnz   @f
  .exit:
     ret
 @@:
	push	edi
	mov	edi,[current_slot]
	add	dx,word[edi+APPDATA.wnd_clientbox.top]
	rol	edx,16
	add	dx,word[edi+APPDATA.wnd_clientbox.left]
	pop	edi
	rol	edx,16
  .forced:				; called from gui/skincode.inc [215]
	push	esi
	mov	esi, ecx
	shr	esi, 16 		; SizeX
	lea	esi, [esi*2+esi]	; 3 bytes per pixel
	mov	[img_buf_line_size], esi
	mov	[img_draw_core_fn], draw_core_24bpp
	mov	[img_draw_edge_fn], draw_edge_24bpp
	mov	[img_bytes_per_pix], 3
	pop	esi

sys_putimage_bpp:			; only called from sys_putimage_palette
	inc	[mouse_pause]
	call	_putimage
	dec	[mouse_pause]
	call	[draw_pointer]
	ret


align 4
sys_putimage_palette:			; sysFn 65
; ebx = pointer to image
; ecx = [xsize]*65536 + [ysize]
; edx = [xstart]*65536 + [ystart]
; esi = number of bits per pixel, must be 1, 8, 24 or 32
; edi = pointer to palette
; ebp = line offset
	mov	eax, [CURRENT_TASK]
	shl	eax, 8
	add	dx, word [eax+SLOT_BASE+APPDATA.wnd_clientbox.top]
	rol	edx, 16
	add	dx, word [eax+SLOT_BASE+APPDATA.wnd_clientbox.left]
	rol	edx, 16
.forced:
	push	eax
	push	esi
	mov	[img_palette], edi
	mov	eax, esi
	cmp	eax, 32 		;>32bpp (stupid call)
	ja	.exit
	shr	al, 3			; 0=1bpp or solid color
	mov	[img_bytes_per_pix], eax
	mov	esi, [eax*4 + img_core_proc_0]
	mov	[img_draw_core_fn], esi
	mov	esi, [eax*4 + img_edge_proc_0]
	mov	[img_draw_edge_fn], esi
	mov	esi, ecx
	shr	esi, 16 		; esi = SizeX
	imul	esi, eax
	or	al, al
	jnz	.done
	mov	eax, [esp]		; bits per pixel
	or	al, al
	jz	.done
.1bpp:
	add	esi, 7
	shr	esi, 3			; 8 pixels per byte
	mov	[img_draw_edge_fn], draw_edge_1bpp
	mov	[img_draw_core_fn], draw_core_1bpp
.done:
	add	esi, ebp		; + line offset
	mov	[img_buf_line_size], esi
	pop	esi
	pop	eax
	jmp	sys_putimage_bpp
.exit:
	ret

align 4
img_core_proc_0 	dd	draw_core_0bpp
img_core_proc_1 	dd	draw_core_8bpp
img_core_proc_2 	dd	draw_core_16bpp
img_core_proc_3 	dd	draw_core_24bpp
img_core_proc_4 	dd	draw_core_32bpp

img_edge_proc_0 	dd	draw_edge_0bpp
img_edge_proc_1 	dd	draw_edge_8bpp
img_edge_proc_2 	dd	draw_edge_16bpp
img_edge_proc_3 	dd	draw_edge_24bpp
img_edge_proc_4 	dd	draw_edge_32bpp

end if
; <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
; the old GFX sys
align 4

syscall_putimage:			; PutImage
sys_putimage:
     test  ecx,0x80008000
     jnz   .exit
     test  ecx,0x0000FFFF
     jz    .exit
     test  ecx,0xFFFF0000
     jnz   @f
  .exit:
     ret
 @@:
	mov	edi,[current_slot]
	add	dx,word[edi+APPDATA.wnd_clientbox.top]
	rol	edx,16
	add	dx,word[edi+APPDATA.wnd_clientbox.left]
	rol	edx,16
  .forced:
	push	ebp esi 0
	mov	ebp, putimage_get24bpp
	mov	esi, putimage_init24bpp
sys_putimage_bpp:
;        cmp     [SCR_MODE], word 0x12
;        jz      @f   ;.doit
;        mov     eax, vesa12_putimage
;        cmp     [SCR_MODE], word 0100000000000000b
;        jae     @f
;        cmp     [SCR_MODE], word 0x13
;        jnz     .doit
;@@:
	mov	eax, vesa20_putimage
.doit:
	inc	[mouse_pause]
	call	eax
	dec	[mouse_pause]
	pop	ebp esi ebp
	jmp	[draw_pointer]
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
.forced:
	cmp	esi, 1
	jnz	@f
	push	edi
	mov	eax, [edi+4]
	sub	eax, [edi]
	push	eax
	push	dword [edi]
	push	0ffffff80h
	mov	edi, esp
	call	put_mono_image
	add	esp, 12
	pop	edi
	ret
@@:
	cmp	esi, 2
	jnz	@f
	push	edi
	push	0ffffff80h
	mov	edi, esp
	call	put_2bit_image
	pop	eax
	pop	edi
	ret
@@:
	cmp	esi, 4
	jnz	@f
	push	edi
	push	0ffffff80h
	mov	edi, esp
	call	put_4bit_image
	pop	eax
	pop	edi
	ret
@@:
	push	ebp esi ebp
	cmp	esi, 8
	jnz	@f
	mov	ebp, putimage_get8bpp
	mov	esi, putimage_init8bpp
	jmp	sys_putimage_bpp
@@:
	cmp	esi, 15
	jnz	@f
	mov	ebp, putimage_get15bpp
	mov	esi, putimage_init15bpp
	jmp	sys_putimage_bpp
@@:
	cmp	esi, 16
	jnz	@f
	mov	ebp, putimage_get16bpp
	mov	esi, putimage_init16bpp
	jmp	sys_putimage_bpp
@@:
	cmp	esi, 24
	jnz	@f
	mov	ebp, putimage_get24bpp
	mov	esi, putimage_init24bpp
	jmp	sys_putimage_bpp
@@:
	cmp	esi, 32
	jnz	@f
	mov	ebp, putimage_get32bpp
	mov	esi, putimage_init32bpp
	jmp	sys_putimage_bpp
@@:
	pop	ebp esi ebp
	ret

put_mono_image:
	push	ebp esi ebp
	mov	ebp, putimage_get1bpp
	mov	esi, putimage_init1bpp
	jmp	sys_putimage_bpp
put_2bit_image:
	push	ebp esi ebp
	mov	ebp, putimage_get2bpp
	mov	esi, putimage_init2bpp
	jmp	sys_putimage_bpp
put_4bit_image:
	push	ebp esi ebp
	mov	ebp, putimage_get4bpp
	mov	esi, putimage_init4bpp
	jmp	sys_putimage_bpp

putimage_init24bpp:
	lea	eax, [eax*3]
putimage_init8bpp:
	ret

align 16
putimage_get24bpp:
	movzx	eax, byte [esi+2]
	shl	eax, 16
	mov	ax, [esi]
	add	esi, 3
	ret	4
align 16
putimage_get8bpp:
	movzx	eax, byte [esi]
	push	edx
	mov	edx, [esp+8]
	mov	eax, [edx+eax*4]
	pop	edx
	inc	esi
	ret	4

putimage_init1bpp:
	add	eax, ecx
	push	ecx
	add	eax, 7
	add	ecx, 7
	shr	eax, 3
	shr	ecx, 3
	sub	eax, ecx
	pop	ecx
	ret
align 16
putimage_get1bpp:
	push	edx
	mov	edx, [esp+8]
	mov	al, [edx]
	add	al, al
	jnz	@f
	lodsb
	adc	al, al
@@:
	mov	[edx], al
	sbb	eax, eax
	and	eax, [edx+8]
	add	eax, [edx+4]
	pop	edx
	ret	4

putimage_init2bpp:
	add	eax, ecx
	push	ecx
	add	ecx, 3
	add	eax, 3
	shr	ecx, 2
	shr	eax, 2
	sub	eax, ecx
	pop	ecx
	ret
align 16
putimage_get2bpp:
	push	edx
	mov	edx, [esp+8]
	mov	al, [edx]
	mov	ah, al
	shr	al, 6
	shl	ah, 2
	jnz	.nonewbyte
	lodsb
	mov	ah, al
	shr	al, 6
	shl	ah, 2
	add	ah, 1
.nonewbyte:
	mov	[edx], ah
	mov	edx, [edx+4]
	movzx	eax, al
	mov	eax, [edx+eax*4]
	pop	edx
	ret	4

putimage_init4bpp:
	add	eax, ecx
	push	ecx
	add	ecx, 1
	add	eax, 1
	shr	ecx, 1
	shr	eax, 1
	sub	eax, ecx
	pop	ecx
	ret
align 16
putimage_get4bpp:
	push	edx
	mov	edx, [esp+8]
	add	byte [edx], 80h
	jc	@f
	movzx	eax, byte [edx+1]
	mov	edx, [edx+4]
	and	eax, 0x0F
	mov	eax, [edx+eax*4]
	pop	edx
	ret	4
@@:
	movzx	eax, byte [esi]
	add	esi, 1
	mov	[edx+1], al
	shr	eax, 4
	mov	edx, [edx+4]
	mov	eax, [edx+eax*4]
	pop	edx
	ret	4

putimage_init32bpp:
	shl	eax, 2
	ret
align 16
putimage_get32bpp:
	lodsd
	ret	4

putimage_init15bpp:
putimage_init16bpp:
	add	eax, eax
	ret
align 16
putimage_get15bpp:
; 0RRRRRGGGGGBBBBB -> 00000000RRRRR000GGGGG000BBBBB000
	push	ecx edx
	movzx	eax, word [esi]
	add	esi, 2
	mov	ecx, eax
	mov	edx, eax
	and	eax, 0x1F
	and	ecx, 0x1F shl 5
	and	edx, 0x1F shl 10
	shl	eax, 3
	shl	ecx, 6
	shl	edx, 9
	or	eax, ecx
	or	eax, edx
	pop	edx ecx
	ret	4

align 16
putimage_get16bpp:
; RRRRRGGGGGGBBBBB -> 00000000RRRRR000GGGGGG00BBBBB000
	push	ecx edx
	movzx	eax, word [esi]
	add	esi, 2
	mov	ecx, eax
	mov	edx, eax
	and	eax, 0x1F
	and	ecx, 0x3F shl 5
	and	edx, 0x1F shl 11
	shl	eax, 3
	shl	ecx, 5
	shl	edx, 8
	or	eax, ecx
	or	eax, edx
	pop	edx ecx
	ret	4



; ==================================================
; eax x beginning
; ebx y beginning
; ecx x end
; edx y end
; edi color

__sys_drawbar:
	mov	esi,[current_slot]
	add	eax,[esi+APPDATA.wnd_clientbox.left]
	add	ecx,[esi+APPDATA.wnd_clientbox.left]
	add	ebx,[esi+APPDATA.wnd_clientbox.top]
	add	edx,[esi+APPDATA.wnd_clientbox.top]
  .forced:
    inc   [mouse_pause]
    call  vesa20_drawbar
    dec   [mouse_pause]
    jmp   [draw_pointer]


kb_read:
	push	ecx edx

	mov	ecx,0x1ffff ; last 0xffff, new value in view of fast CPU's
      kr_loop:
	in	al,0x64
	test	al,1
	jnz	kr_ready
	loop	kr_loop
	mov	ah,1
	jmp	kr_exit
      kr_ready:
	push	ecx
	mov	ecx,32
      kr_delay:
	loop	kr_delay
	pop	ecx
	in	al,0x60
	xor	ah,ah
      kr_exit:

	pop	edx ecx

	ret


kb_write:

	push	ecx edx

	mov	dl,al
	in	al,0x60
	mov	ecx,0x1ffff ; last 0xffff, new value in view of fast CPU's
      kw_loop:
	in	al,0x64
	test	al,2
	jz	kw_ok
	loop	kw_loop
	mov	ah,1
	jmp	kw_exit
      kw_ok:
	mov	al,dl
	out	0x60,al
	mov	ecx,0x1ffff ; last 0xffff, new value in view of fast CPU's
      kw_loop3:
	in	al,0x64
	test	al,2
	jz	kw_ok3
	loop	kw_loop3
	mov	ah,1
	jmp	kw_exit
      kw_ok3:
	mov	ah,8
      kw_loop4:
	mov	ecx,0x1ffff ; last 0xffff, new value in view of fast CPU's
      kw_loop5:
	in	al,0x64
	test	al,1
	jnz	kw_ok4
	loop	kw_loop5
	dec	ah
	jnz	kw_loop4
      kw_ok4:
	xor	ah,ah
      kw_exit:

	pop	edx ecx

	ret


kb_cmd:

	mov	ecx,0x1ffff ; last 0xffff, new value in view of fast CPU's
      c_wait:
	in	al,0x64
	test	al,2
	jz	c_send
	loop	c_wait
	jmp	c_error
      c_send:
	mov	al,bl
	out	0x64,al
	mov	ecx,0x1ffff ; last 0xffff, new value in view of fast CPU's
      c_accept:
	in	al,0x64
	test	al,2
	jz	c_ok
	loop	c_accept
      c_error:
	mov	ah,1
	jmp	c_exit
      c_ok:
	xor	ah,ah
      c_exit:
	ret


rerouteirqs:

	cli

	mov	al,0x11 	;  icw4, edge triggered
	out	0x20,al
	call	pic_delay
	out	0xA0,al
	call	pic_delay

	mov	al,0x20 	;  generate 0x20 +
	out	0x21,al
	call	pic_delay
	mov	al,0x28 	;  generate 0x28 +
	out	0xA1,al
	call	pic_delay

	mov	al,0x04 	;  slave at irq2
	out	0x21,al
	call	pic_delay
	mov	al,0x02 	;  at irq9
	out	0xA1,al
	call	pic_delay

	mov	al,0x01 	;  8086 mode
	out	0x21,al
	call	pic_delay
	out	0xA1,al
	call	pic_delay

	mov	al,255		; mask all irq's
	out	0xA1,al
	call	pic_delay
	out	0x21,al
	call	pic_delay

	mov	ecx,0x1000
	cld
picl1:	call	pic_delay
	loop	picl1

	mov	al,255		; mask all irq's
	out	0xA1,al
	call	pic_delay
	out	0x21,al
	call	pic_delay

	cli

	ret


pic_delay:

	jmp	pdl1
pdl1:	ret


sys_msg_board_str:

     pushad
   @@:
     cmp    [esi],byte 0
     je     @f
     mov    eax,1
     movzx  ebx,byte [esi]
     call   sys_msg_board
     inc    esi
     jmp    @b
   @@:
     popad
     ret

sys_msg_board_byte:
; in: al = byte to display
; out: nothing
; destroys: nothing
	pushad
	mov	ecx, 2
	shl	eax, 24
	jmp	@f

sys_msg_board_word:
; in: ax = word to display
; out: nothing
; destroys: nothing
	pushad
	mov	ecx, 4
	shl	eax, 16
	jmp	@f

sys_msg_board_dword:
; in: eax = dword to display
; out: nothing
; destroys: nothing
	pushad
	mov	ecx, 8
@@:
	push	ecx
	rol	eax, 4
	push	eax
	and	al, 0xF
	cmp	al, 10
	sbb	al, 69h
	das
	mov	bl, al
	xor	eax, eax
	inc	eax
	call	sys_msg_board
	pop	eax
	pop	ecx
	loop	@b
	popad
	ret

uglobal
  msg_board_data: times 4096 db 0
  msg_board_count dd 0x0
endg

sys_msg_board:

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

	mov	ecx, [msg_board_count]
	cmp	eax, 1
	jne	.smbl1

	mov	[msg_board_data+ecx],bl
	inc	ecx
	and	ecx, 4095
	mov	[msg_board_count], ecx
	mov	[check_idle_semaphore], 5
	ret
.smbl1:
	cmp	eax, 2
	jne	.smbl2
	test	ecx, ecx
	jz	.smbl21
	mov	eax, msg_board_data+1
	mov	ebx, msg_board_data
	movzx	edx, byte [ebx]
	call	memmove
	dec	[msg_board_count]
	mov	[esp + 36], edx ;eax
	mov	[esp + 24], dword 1
	ret
.smbl21:
	mov	[esp+36], ecx
	mov	[esp+24], ecx
.smbl2:
	ret

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; 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
	   dd sys_process_def.5
endg




sys_process_def:
	dec	ebx
	cmp	ebx,5
	jae	.not_support	;if >=6 then or eax,-1

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

.not_support:
	or	eax,-1
	ret

.1:
     shl   edi,8
     mov   [edi+SLOT_BASE + APPDATA.keyboard_mode],cl

     ret

.2:				; 2 = get keyboard mode
     shl   edi,8
     movzx eax, byte [SLOT_BASE+edi + APPDATA.keyboard_mode]
     mov   [esp+32],eax
     ret
;     xor   eax,eax
;     movzx eax,byte [shift]
;     movzx ebx,byte [ctrl]
;     shl   ebx,2
;     add   eax,ebx
;     movzx ebx,byte [alt]
;     shl   ebx,3
;     add   eax,ebx
.3:				;3 = get keyboard ctrl, alt, shift
 ;// mike.dld [
     mov   eax, [kb_state]
 ;// mike.dld ]
     mov   [esp+32],eax
     ret

.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
	jecxz	@f
	mov	[edx+12], eax
@@:
	and	dword [esp+32], 0
	ret

.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


;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; 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,[Screen_Max_X]
     shl  eax,16
     mov  ax,[Screen_Max_Y]
     add  eax,0x00010001
     mov  [esp+32],eax
     ret
.2:				; bits per pixel
     movzx eax,byte [ScreenBPP]
     mov   [esp+32],eax
     ret
.3:				; bytes per scanline
     mov   eax,[BytesPerScanLine]
     mov   [esp+32],eax
     ret

align 4  ;  system functions

syscall_setpixel:			; SetPixel

	mov	eax, ebx
	mov	ebx, ecx
	mov	ecx, edx
	xor	edi, edi ; no force
	call	[_display.disable_mouse]
	jmp	[putpixel]

align 4

syscall_writetext:			; WriteText

	mov   eax,[TASK_BASE]
	mov   ebp,[eax-twdw+WDATA.box.left]
	push  esi
	mov   esi,[current_slot]
	add   ebp,[esi+APPDATA.wnd_clientbox.left]
	shl   ebp,16
	add   ebp,[eax-twdw+WDATA.box.top]
	add   bp,word[esi+APPDATA.wnd_clientbox.top]
	pop   esi
	add   ebx,ebp
	mov   eax,edi
	xor   edi,edi
	jmp   dtext

align 4

syscall_openramdiskfile:		; OpenRamdiskFile

	mov	eax, ebx
	mov	ebx, ecx
	mov	ecx, edx
	mov	edx, esi
	mov	esi, 12
	call	fileread
	mov	[esp+32], eax
	ret

align 4

syscall_drawrect:			; DrawRect

	mov	edi, edx ; color + gradient
	and	edi, 0x80FFFFFF
	test	bx, bx	; x.size
	je	.drectr
	test	cx, cx ; y.size
	je	.drectr

	mov	eax, ebx ; bad idea
	mov	ebx, ecx

	movzx	ecx, ax ; ecx - x.size
	shr	eax, 16 ; eax - x.coord
	movzx	edx, bx ; edx - y.size
	shr	ebx, 16 ; ebx - y.coord
	mov	esi, [current_slot]

	add	eax, [esi + APPDATA.wnd_clientbox.left]
	add	ebx, [esi + APPDATA.wnd_clientbox.top]
	add	ecx, eax
	add	edx, ebx
	jmp	[drawbar]
.drectr:
	ret

align 4
syscall_getscreensize:			; GetScreenSize
	mov	ax, [Screen_Max_X]
	shl	eax, 16
	mov	ax, [Screen_Max_Y]
	mov	[esp + 32], eax
	ret

align 4


align 4

syscall_getpixel:			; GetPixel
     mov   ecx, [Screen_Max_X]
     inc   ecx
     xor   edx, edx
     mov   eax, ebx
     div   ecx
     mov   ebx, edx
     xchg  eax, ebx
     call  get_pixel	; eax - x, ebx - y
     mov   [esp + 32], ecx
     ret

align 4

syscall_getarea:
;eax = 36
;ebx = pointer to bufer for img BBGGRRBBGGRR...
;ecx = [size x]*65536 + [size y]
;edx = [start x]*65536 + [start y]
     pushad
	 inc   [mouse_pause]
; Check of use of the hardware cursor.
      cmp  [_display.disable_mouse],__sys_disable_mouse
	  jne  @f
; Since the test for the coordinates of the mouse should not be used,
; then use the call [disable_mouse] is not possible!
      cmp  dword [MOUSE_VISIBLE],dword 0
      jne  @f
      pushf
      cli
      call draw_mouse_under
      popf
      mov  [MOUSE_VISIBLE],dword 1
@@:
     mov   edi,ebx
     mov   eax,edx
     shr   eax,16
     mov   ebx,edx
     and   ebx,0xffff
     dec   eax
	   dec	 ebx
     ; eax - x, ebx - y
     mov   edx,ecx

     shr   ecx,16
     and   edx,0xffff
     mov   esi,ecx
     ; ecx - size x, edx - size y

	 mov   ebp,edx
	 dec   ebp
     lea   ebp,[ebp*3]

	 imul  ebp,esi

	 mov   esi,ecx
	 dec   esi
	 lea   esi,[esi*3]

     add   ebp,esi
     add   ebp,edi

     add   ebx,edx

.start_y:
     push  ecx edx
.start_x:
     push  eax ebx ecx
     add   eax,ecx

     call  get_pixel ; eax - x, ebx - y

     mov   [ebp],cx
     shr   ecx,16
     mov   [ebp+2],cl

     pop   ecx ebx eax
     sub   ebp,3
     dec   ecx
     jnz   .start_x
	 pop   edx ecx
	 dec   ebx
     dec   edx
     jnz   .start_y
     dec	[mouse_pause]
; Check of use of the hardware cursor.
      cmp  [_display.disable_mouse],__sys_disable_mouse
	  jne  @f
	 call  [draw_pointer]
@@:
     popad
     ret

align 4

syscall_drawline:			; DrawLine

	mov	edi, [TASK_BASE]
	movzx	eax, word[edi-twdw+WDATA.box.left]
	mov	ebp, eax
	mov	esi, [current_slot]
	add	ebp, [esi+APPDATA.wnd_clientbox.left]
	add	ax, word[esi+APPDATA.wnd_clientbox.left]
	add	ebp,ebx
	shl	eax, 16
	movzx	ebx, word[edi-twdw+WDATA.box.top]
	add	eax, ebp
	mov	ebp, ebx
	add	ebp, [esi+APPDATA.wnd_clientbox.top]
	add	bx, word[esi+APPDATA.wnd_clientbox.top]
	add	ebp, ecx
	shl	ebx, 16
	xor	edi, edi
	add	ebx, ebp
	mov	ecx, edx
	jmp	[draw_line]

align 4

syscall_getirqowner:			; GetIrqOwner

     cmp   ebx,16
     jae   .err

     cmp   [irq_rights + 4 * ebx], dword 2
     je    .err

     mov   eax,[4 * ebx + irq_owner]
     mov   [esp+32],eax

     ret
.err:
     or    dword [esp+32], -1
     ret

align 4

syscall_reserveportarea:		; ReservePortArea and FreePortArea

     call  r_f_port_area
     mov   [esp+32],eax
     ret

align 4

syscall_threads:			; CreateThreads
; eax=1 create thread
;
;   ebx=thread start
;   ecx=thread stack value
;
; on return : eax = pid

     call  new_sys_threads

     mov   [esp+32],eax
     ret

align 4

stack_driver_stat:

     call  app_stack_handler		; Stack status

;     mov   [check_idle_semaphore],5    ; enable these for zero delay
;     call  change_task                 ; between sent packet

     mov   [esp+32],eax
     ret

align 4

socket: 				; Socket interface
     call  app_socket_handler

;     mov   [check_idle_semaphore],5    ; enable these for zero delay
;     call  change_task                 ; between sent packet

     mov   [esp+36],eax
     mov   [esp+24],ebx
     ret

align 4

read_from_hd:				; Read from hd - fn not in use

     mov   edi,[TASK_BASE]
     add   edi,TASKDATA.mem_start
     add   eax,[edi]
     add   ecx,[edi]
     add   edx,[edi]
     call  file_read

     mov   [esp+36],eax
     mov   [esp+24],ebx

     ret

paleholder:
	ret

align 4
set_screen:
	cmp eax, [Screen_Max_X]
	jne .set

	cmp edx, [Screen_Max_Y]
	jne .set
	ret
.set:
	pushfd
	cli

	mov [Screen_Max_X], eax
	mov [Screen_Max_Y], edx
	mov [BytesPerScanLine], ecx

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

	push ebx
	push esi
	push edi

	pushad

	stdcall kernel_free, [_WinMapAddress]

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

	stdcall kernel_alloc, eax
	mov [_WinMapAddress], eax
	test eax, eax
	jz .epic_fail

	popad

	call	repos_windows
	xor eax, eax
	xor ebx, ebx
	mov	ecx, [Screen_Max_X]
	mov	edx, [Screen_Max_Y]
	call	calculatescreen
	pop edi
	pop esi
	pop ebx

	popfd
	ret

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

; --------------- APM ---------------------

align 4
sys_apm:
	xor	eax,eax
	inc	eax
	or	dword [esp + 44], eax	; error
	add	eax,7
	mov	dword [esp + 32], eax	; 32-bit protected-mode interface not supported
	ret

; -----------------------------------------

align 4

undefined_syscall:			; Undefined system call
     mov   [esp + 32], dword -1
     ret

align 4
system_shutdown:	  ; shut down the system

	   cmp byte [BOOT_VAR+0x9030], 1
	   jne @F
	   ret
@@:
	   call stop_all_services

yes_shutdown_param:
	   cli


	   mov al, 0xFF
	   out 0x21, al 	;IntrCntrl1Reg2
	   out 0xA1, al 	;IntrCntrl2Reg2

	cmp	byte [BOOT_VAR + 0x9030], 2
	jnz	pm_restart
if 0
	mov	al, SB_PM_CTRL_BLK
	mov	ah, al
	inc	ah
	mov	dx, 0x0CD6
	out	dx, al
	inc	dl
	in	al, dx
	mov	cl, al
	dec	dl
	mov	al, ah
	out	dx, al
	inc	dl
	in	al, dx
	mov	ch, al
end if
	mov	dx, 0x0804	;cx
	mov	ax, 0x03400
	out	dx, ax
; THE END...
	jmp	$	; just to be absolutely sure


pm_restart:

	   mov	al,0x0F
	   out	0x70,al 	; NmiEnable
	   mov	al,0x05
	   out	0x71,al 	; RtcData

	   mov	ax, 6
	   mov	dx, 0xCF9	; reset reg
	   out	dx, ax

	   hlt
	   jmp $-1


diff16 "End of 32-code ",0,$

include "data32.inc"

__REV__ = __REV

uglobals_size = $ - endofcode
diff16 "Zero-filled blk",0,endofcode
diff16 "End of kernel  ",0,$