;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; ;; ;; ;; SYSTEM CALL ENTRY ;; ;; ;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; align 32 i40: push ds es pushad cld mov ax,word os_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 ; cli popad pop es ds iretd ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; ;; ;; ;; SYSENTER ENTRY ;; ;; ;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; uglobal times 100 db ? sysenter_stack: endg align 32 SYSENTER_VAR equ 0 sysenter_entry: ; Настраиваем стек ; cli sysenter clear IF ; push 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 mov esp, [ss:CURRENT_TASK] shl esp, 8 mov esp, [ss:SLOT_BASE + esp + APPDATA.pl0_stack] add esp, RING0_STACK_SIZE ; configure ESP sti ;------------------ push ds es pushad cld mov ax, word os_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 pop es ds ;------------------ mov edx, [SYSENTER_VAR] ; eip mov ecx, [SYSENTER_VAR + 4] ; esp sysexit ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; ;; ;; ;; SYSCALL ENTRY ;; ;; ;; ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; align 32 syscall_entry: ; cli syscall clear IF xchg ecx, [esp] mov [SYSENTER_VAR + 4], esp ; 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 mov esp, [ss:CURRENT_TASK] shl esp, 8 mov esp, [ss:SLOT_BASE + esp + APPDATA.pl0_stack] add esp, RING0_STACK_SIZE ; configure ESP sti ;------------------ push ds es pushad cld mov ax, word os_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 pop es ds ;------------------ cli mov esp, [SYSENTER_VAR + 4] xchg ecx, [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 undefined_syscall ; 30-reserved 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 undefined_syscall ; 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 times 255 - ( ($-servetable) /4 ) dd undefined_syscall dd sys_end ; -1-end application endg