kolibrios/kernel/trunk/core/syscall.inc

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;;                                                              ;;
;; Copyright (C) KolibriOS team 2004-2007. All rights reserved. ;;
;; Distributed under terms of the GNU General Public License    ;;
;;                                                              ;;
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$Revision$


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;;                                                            ;;
;;                   SYSTEM CALL ENTRY                        ;;
;;                                                            ;;
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align 16
i40:
; diamond, 27.03.2007: handler does not require disabled interrupts
;                      so interrupts remain enabled when calling int 0x40
      pushad
      cld

 ;     mov   ax, word app_data
 ;     mov   ds, ax
 ;     mov   es, ax

      ; load all registers in crossed order
        mov     eax, ebx
        mov     ebx, ecx
        mov     ecx, edx
        mov     edx, esi
        mov     esi, edi
        mov     edi, [esp+28]

      ; enable interupts  -  a task switch or an IRQ _CAN_ interrupt i40 handler
;      sti
      push  eax
      and   edi,0xff
      call  dword [servetable+edi*4]
      pop   eax

      popad
      iretd


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;;                                                            ;;
;;                     SYSENTER ENTRY                         ;;
;;                                                            ;;
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align 32
sysenter_entry:
	; <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD>
        mov     esp, [ss:tss._esp0]
	sti
	push	ebp			; save app esp + 4
	mov	ebp, [ebp]		; ebp - original ebp
	;------------------
	pushad
	cld

        mov     eax, ebx
        mov     ebx, ecx
        mov     ecx, edx
        mov     edx, esi
        mov     esi, edi
        mov     edi, [esp + 28]

	push	eax
	and	edi, 0xff
	call	dword [servetable + edi * 4]
	pop	eax

	popad
	;------------------
	xchg	ecx, [ss:esp]		; <EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> - app ecx, ecx - app esp + 4
	sub	ecx, 4
	xchg	edx, [ecx]		; edx - return point, & save original edx
	push	edx
	mov	edx, [ss:esp + 4]
	mov	[ecx + 4], edx		; save original ecx
	pop	edx
	sysexit

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;;                                                            ;;
;;                     SYSCALL ENTRY                          ;;
;;                                                            ;;
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align 32
syscall_entry:
  ;     cli                 syscall clear IF
        xchg    esp, [ss:tss._esp0]
        push    ecx
        lea     ecx, [esp+4]
        xchg    ecx, [ss:tss._esp0]
        sti
        push    ecx
        mov     ecx, [ecx]

  ;      mov     [ss:sysenter_stack - 4], eax
  ;      mov     eax, [ss:CURRENT_TASK]
  ;      shl     eax, 8
  ;      mov     eax, [ss:SLOT_BASE + eax + APPDATA.pl0_stack]
  ;      lea     esp, [eax + RING0_STACK_SIZE]           ; configure ESP
  ;      mov     eax, [ss:sysenter_stack - 4]            ; eax - original eax, from app

	;------------------
	pushad
	cld

  ;      mov     ax, word app_data
  ;      mov     ds, ax
  ;      mov     es, ax

        mov     eax, ebx
        mov     ebx, ecx
        mov     ecx, edx
        mov     edx, esi
        mov     esi, edi
        mov     edi, [esp + 28]

	push	eax
	and	edi, 0xff
	call	dword [servetable + edi * 4]
	pop	eax

	popad
	;------------------

        mov     ecx, [ss:esp+4]
        pop     esp
	sysret
iglobal
  ;;;;;;;;;;;;;;;;;;;;;;;;;;;;
  ;; SYSTEM FUNCTIONS TABLE ;;
  ;;;;;;;;;;;;;;;;;;;;;;;;;;;;

  align 4
  servetable:

      dd sys_drawwindow          ; 0-DrawWindow
      dd syscall_setpixel        ; 1-SetPixel
      dd sys_getkey              ; 2-GetKey
      dd sys_clock               ; 3-GetTime
      dd syscall_writetext       ; 4-WriteText
      dd delay_hs                ; 5-DelayHs
      dd syscall_openramdiskfile ; 6-OpenRamdiskFile
      dd syscall_putimage        ; 7-PutImage
      dd sys_button              ; 8-DefineButton
      dd sys_cpuusage            ; 9-GetProcessInfo
      dd sys_waitforevent        ; 10-WaitForEvent
      dd sys_getevent            ; 11-CheckForEvent
      dd sys_redrawstat          ; 12-BeginDraw and EndDraw
      dd syscall_drawrect        ; 13-DrawRect
      dd syscall_getscreensize   ; 14-GetScreenSize
      dd sys_background          ; 15-bgr
      dd sys_cachetodiskette     ; 16-FlushFloppyCache
      dd sys_getbutton           ; 17-GetButton
      dd sys_system              ; 18-System Services
      dd paleholder;undefined_syscall       ; 19-reserved
      dd sys_midi                ; 20-ResetMidi and OutputMidi
      dd sys_setup               ; 21-SetMidiBase,SetKeymap,SetShiftKeymap,.
      dd sys_settime             ; 22-setting date,time,clock and alarm-clock
      dd sys_wait_event_timeout  ; 23-TimeOutWaitForEvent
      dd syscall_cdaudio         ; 24-PlayCdTrack,StopCd and GetCdPlaylist
      dd sys_sb16                ; 25-SetSb16
      dd sys_getsetup            ; 26-GetMidiBase,GetKeymap,GetShiftKeymap,.
      dd undefined_syscall       ; 27-reserved
      dd sys_sb16II              ; 28-SetSb16
      dd sys_date                ; 29-GetDate
      dd sys_current_directory   ; 30-Get/SetCurrentDirectory
      dd undefined_syscall       ; 31-reserved
      dd syscall_delramdiskfile  ; 32-DelRamdiskFile
      dd syscall_writeramdiskfile; 33-WriteRamdiskFile
      dd undefined_syscall       ; 34-reserved
      dd syscall_getpixel        ; 35-GetPixel
      dd syscall_readstring      ; 36-ReadString (not yet ready)
      dd readmousepos            ; 37-GetMousePosition_ScreenRelative,.
      dd syscall_drawline        ; 38-DrawLine
      dd sys_getbackground       ; 39-GetBackgroundSize,ReadBgrData,.
      dd set_app_param           ; 40-WantEvents
      dd syscall_getirqowner     ; 41-GetIrqOwner
      dd get_irq_data            ; 42-ReadIrqData
      dd sys_outport             ; 43-SendDeviceData
      dd sys_programirq          ; 44-ProgramIrqs
      dd reserve_free_irq        ; 45-ReserveIrq and FreeIrq
      dd syscall_reserveportarea ; 46-ReservePortArea and FreePortArea
      dd display_number          ; 47-WriteNum
      dd display_settings        ; 48-SetRedrawType and SetButtonType
      dd sys_apm                 ; 49-Advanced Power Management (APM)
      dd random_shaped_window    ; 50-Window shape & scale
      dd syscall_threads         ; 51-Threads
      dd stack_driver_stat       ; 52-Stack driver status
      dd socket                  ; 53-Socket interface
      dd user_events             ; 54-User events
      dd sound_interface         ; 55-Sound interface
      dd undefined_syscall       ; 56-reserved
      dd sys_pcibios             ; 57-reserved
      dd file_system             ; 58-Common file system interface
      dd undefined_syscall       ; 59-reserved
      dd sys_IPC                 ; 60-Inter Process Communication
      dd sys_gs                  ; 61-Direct graphics access
      dd sys_pci                 ; 62-PCI functions
      dd sys_msg_board           ; 63-System message board
      dd sys_resize_app_memory   ; 64-Resize application memory usage
      dd syscall_putimage_palette; 65-PutImagePalette
      dd sys_process_def         ; 66-Process definitions - keyboard
      dd sys_window_move         ; 67-Window move or resize
      dd new_services            ; 68-Some internal services
      dd sys_debug_services      ; 69-Debug
      dd file_system_lfn         ; 70-Common file system interface, version 2
      dd syscall_windowsettings  ; 71-Window settings
      dd sys_sendwindowmsg       ; 72-Send window message

  times 255 - ( ($-servetable) /4 )  dd undefined_syscall

      dd sys_end                 ; -1-end application
endg