WebSVN – Kolibri OS – Diff – /kernel/trunk/core/syscall.inc

 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 ;;                                                            ;;
 ;;                   SYSTEM CALL ENTRY                        ;;
 ;;                                                            ;;
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+uglobal
+  task_tss rd 1
+endg
 align 32
 i40:
+      pushad
+      push  ds
+      mov   ax,word os_data
+      mov   ds,ax
+      mov   es,ax
+      mov   [task_tss],esp
+      add   dword [task_tss],4
       cli
       mov    edi,[0x3000]
       mov    eax,edi
       shl    edi, 3
 ;clear busy flag in application's TSS
       mov    [edi+gdts+ tss0 +5], word 01010000b *256 +11101001b
 ;save GDT TSS entry
-      mov    edx,[edi+tss0_l]
+;      mov    edx,[edi+tss0_l]
-      mov    [reg1+eax*4],edx
+;      mov    [reg1+eax*4],edx
-      mov    edx,[edi+tss0_l+4]
+;      mov    edx,[edi+tss0_l+4]
-      mov    [reg2+eax*4],edx
+;      mov    [reg2+eax*4],edx
 ;and then write there i40's descriptor
-      mov    edx,[tss0sys_l+edi]
+;      mov    edx,[tss0sys_l+edi]
-      mov    [edi+tss0_l],edx
+;      mov    [edi+tss0_l],edx
-      mov    edx,[tss0sys_l+edi+4]
+;      mov    edx,[tss0sys_l+edi+4]
-      mov    [edi+tss0_l+4],edx
+;      mov    [edi+tss0_l+4],edx
       shl    edi,5
       mov    [edi+0x80000+0xB0],eax  ; used i40 handler
       ; for syscall trace function
       call  save_registers
-      mov   esi, [0x3000]
+;      mov   esi, [0x3000]
-      imul  esi, tss_step
+;      imul  esi, tss_step
+;      add   esi, tss_data
+      mov   esi,[task_tss]
-      add   esi, tss_data
+;      sub   esi,0x28
       ; esi holds address of TSS of interupted program
       ; load first 3 registers
-      mov   eax,[esi+l.eax-tss_sceleton]
+      mov   eax,[esi+28];+l.eax-tss_sceleton]
-      mov   ebx,[esi+l.ebx-tss_sceleton]
+      mov   ebx,[esi+16];l.ebx-tss_sceleton]
-      mov   ecx,[esi+l.ecx-tss_sceleton]
+      mov   ecx,[esi+24];l.ecx-tss_sceleton]
       ; save current registers
       ; stack may be modified by a system function to return some value to caller!
       pushad
       ; load all registers from TSS of the application, in crossed order (why?)
-      mov   edi,[esi+l.eax-tss_sceleton]
+      mov   edi,[esi+28];l.eax-tss_sceleton]
-      mov   eax,[esi+l.ebx-tss_sceleton]
+      mov   eax,[esi+16];l.ebx-tss_sceleton]
-      mov   ebx,[esi+l.ecx-tss_sceleton]
+      mov   ebx,[esi+24];l.ecx-tss_sceleton]
-      mov   ecx,[esi+l.edx-tss_sceleton]
+      mov   ecx,[esi+20];l.edx-tss_sceleton]
-      mov   edx,[esi+l.esi-tss_sceleton]
+      mov   edx,[esi+4];l.esi-tss_sceleton]
-      mov   esi,[esi+l.edi-tss_sceleton]
+      mov   esi,[esi+0];l.edi-tss_sceleton]
       ; enable interupts  -  a task switch or an IRQ _CAN_ interrupt i40 handler
       sti
       ; eax doesn't need to be saved, but...
       push   eax
       and    edi,0xff
       call   dword [servetable+edi*4]
       pop    eax
       cli
       ; return saved and probably even changed regs
       popad
  ;  esi already loaded  -  look above "pusha"
       ;mov   esi,[0x3000]
       ;imul  esi,tss_step
       ;add   esi,tss_data
+ ;
       ; modify 3 program's registers (in its TSS)
-      mov   [esi+l.eax-tss_sceleton], eax
+      mov   [esi+28],eax;[esi+l.eax-tss_sceleton], eax
-      mov   [esi+l.ebx-tss_sceleton], ebx
+      mov   [esi+16],ebx;[esi+l.ebx-tss_sceleton], ebx
-      mov   [esi+l.ecx-tss_sceleton], ecx
+      mov   [esi+24],ecx;[esi+l.ecx-tss_sceleton], ecx
       ; calculate app's TSS address
-      mov   ebx, [0x3000]
+;      mov   ebx, [0x3000]
-      shl   ebx, 3
+;      shl   ebx, 3
-      add   ebx, tss0_l
+;      add   ebx, tss0_l
-      mov   ecx, [0x3000]
+;      mov   ecx, [0x3000]
       ; restore saved TSS descriptor
-      mov   eax,     [reg1+ecx*4]
+;      mov   eax,     [reg1+ecx*4]
-      mov   [ebx],   eax
+;      mov   [ebx],   eax
-      mov   eax,     [reg2+ecx*4]
+;      mov   eax,     [reg2+ecx*4]
-      mov   [ebx+4], eax
+;      mov   [ebx+4], eax
       xor    eax, eax
       mov    edi, [0x3000]          ; no syscall interrupt in use anymore
       shl    edi, 8
       mov    [edi+0x80000+0xB0],eax
       ; clear busy flag in TSS of this handler
-      mov    edi, [0x3000]
+;      mov    edi, [0x3000]
-      shl    edi, 3
+;      shl    edi, 3
-      mov    [edi+tss0sys_l +5], word 01010000b *256 +11101001b
+;      mov    [edi+tss0sys_l +5], word 01010000b *256 +11101001b
-      add   edi,tss0
+;      add   edi,tss0
-      mov   [0xB004], di
+;      mov   [0xB004], di
+;      jmp   pword [0xB000]
+      pop     eax
+      mov     ds,ax
+      mov     es,ax
       popad
-      jmp   pword [0xB000]
+      iretd
       jmp    i40
 label reg1    dword at 0x6000
 label reg2    dword at 0x6400
 label usedi40 byte  at 0x6800
 uglobal
   schd dd 0x0
 endg
 align 4
 save_registers:
       mov   esi,[0x3000]
       imul  esi,tss_step
       add   esi,tss_data
       mov   eax,[esi+l.eax-tss_sceleton]
       mov   ebx,[esi+l.ebx-tss_sceleton]
       mov   ecx,[esi+l.ecx-tss_sceleton]
       mov   edx,[esi+l.edx-tss_sceleton]
       mov   edi,[esi+l.edi-tss_sceleton]
       mov   ebp,[esi+l.ebp-tss_sceleton]
       mov   esi,[esi+l.esi-tss_sceleton]
       push  eax ecx esi edi
       mov   esi,[0x3010]
       mov   eax,[esi+0x4]
       mov   esi,esp
       inc   [save_syscall_count]
       mov   edi,[save_syscall_count]
       and   edi,0xF
       shl   edi,6
       add   edi,save_syscall_data+32
       mov   [edi-32],eax
       mov   ecx,32 / 4
       cld
       rep   movsd
       pop   edi esi ecx eax
       ret
 uglobal
   save_syscall_count  dd 0x0
 endg
 label save_syscall_data dword at 0x5000
 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 syscall_system          ; 18-Shutdown,KillApp,WindowActivate
       dd syscall_startapp        ; 19-StartApp
       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 sys_wss                 ; 27-SetWssMainVol and SetWssCdVol
       dd sys_sb16II              ; 28-SetSb16
       dd sys_date                ; 29-GetDate
       dd syscall_readhd          ; 30-ReadHd
       dd syscall_starthdapp      ; 31-StartHdApp
       dd syscall_delramdiskfile  ; 32-DelRamdiskFile
       dd syscall_writeramdiskfile; 33-WriteRamdiskFile
       dd read_floppy_file        ; 34-ReadFloppyDrive
       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 syscall_appints         ; 49-AppInts
       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 write_to_hd             ; 56-Write a file to hd
       dd delete_from_hd          ; 57-Delete a file from hd
       dd file_system             ; 58-Common file system interface
       dd sys_trace               ; 59-System call trace
       dd new_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 undefined_syscall       ; 65-UTF
       dd sys_process_def         ; 66-Process definitions - keyboard
       dd sys_window_move         ; 67-Window move or resize
       dd sys_internal_services   ; 68-Some internal services
   times 255 - ( ($-servetable) /4 )  dd undefined_syscall
       dd sys_end                 ; -1-end application
 endg

Subversion Repositories Kolibri OS

(root)/kernel/trunk/core/syscall.inc – Rev 2 → 3