;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; ;;
;; SYSTEM CALL ENTRY ;;
;; ;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
align 16
i40:
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
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; ;;
;; SYSENTER ENTRY ;;
;; ;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
uglobal
times 100 db ?
sysenter_stack:
endg
align 32
SYSENTER_VAR equ 0
sysenter_entry:
; Íàñòðàèâàåì ñòåê
; 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, [CURRENT_TASK]
shl esp, 8
mov esp, [SLOT_BASE + esp + APPDATA.pl0_stack]
add esp, RING0_STACK_SIZE ; configure ESP
sti
;------------------
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 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, [CURRENT_TASK]
shl esp, 8
mov esp, [SLOT_BASE + esp + APPDATA.pl0_stack]
add esp, RING0_STACK_SIZE ; configure ESP
sti
;------------------
; push ds es
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
; 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