kolibrios/kernel/trunk/core/syscall.inc
CleverMouse a321a83609 Protect thread from external terminate while running any syscall except 5,10,23.
Now 18.2/18.12 are really safe through kernel-colored glasses (however, you still
should not use them except for really critical cases),
although the protection is sometimes quite excessive.

git-svn-id: svn://kolibrios.org@3303 a494cfbc-eb01-0410-851d-a64ba20cac60
2013-03-01 10:27:19 +00:00

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8.3 KiB
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; ;;
;; Copyright (C) KolibriOS team 2004-2012. All rights reserved. ;;
;; Distributed under terms of the GNU General Public License ;;
;; ;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
$Revision$
; Old style system call converter
align 16
cross_order:
; load all registers in crossed order
mov eax, ebx
mov ebx, ecx
mov ecx, edx
mov edx, esi
mov esi, edi
movzx edi, byte[esp+28 + 4]
sub edi, 53
call dword [servetable+edi*4]
ret
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; ;;
;; SYSENTER ENTRY ;;
;; ;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
align 32
sysenter_entry:
; Íàñòðàèâàåì ñòåê
mov esp, [ss:tss._esp0]
sti
push ebp ; save app esp + 4
mov ebp, [ebp] ; ebp - original ebp
;------------------
pushad
cld
call protect_from_terminate
movzx eax, byte [esp+28]
mov edx, dword [esp+24]
call dword [servetable2 + eax * 4]
call unprotect_from_terminate
popad
;------------------
xchg ecx, [ss:esp] ; â âåðøèí ñòåêà - 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
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; ;;
;; SYSTEM CALL ENTRY ;;
;; ;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
align 16
i40:
pushad
cld
call protect_from_terminate
movzx eax, byte [esp+28]
mov edx, dword [esp+24]
call dword [servetable2 + eax * 4]
call unprotect_from_terminate
popad
iretd
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; ;;
;; SYSCALL ENTRY ;;
;; ;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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]
;------------------
pushad
cld
call protect_from_terminate
movzx eax, byte [esp+28]
mov edx, dword [esp+24]
call dword [servetable2 + eax * 4]
call unprotect_from_terminate
popad
;------------------
mov ecx, [ss:esp+4]
pop esp
sysret
iglobal
;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; SYSTEM FUNCTIONS TABLE ;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;
align 4
servetable:
dd socket ; 53-Socket interface
dd 0
dd 0
dd 0
dd 0
dd file_system ; 58-Common file system interface
dd 0
dd 0
dd 0
dd 0 ; 62-PCI functions
dd sys_msg_board ; 63-System message board
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; NEW SYSTEM FUNCTIONS TABLE ;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
align 4
servetable2:
dd syscall_draw_window ; 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_unprotected ; 5-DelayHs
dd syscall_openramdiskfile ; 6-OpenRamdiskFile
dd syscall_putimage ; 7-PutImage
dd syscall_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 ; 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 syscall_putarea_backgr ; 25-Put Area to background
dd sys_getsetup ; 26-GetMidiBase,GetKeymap,GetShiftKeymap,.
dd undefined_syscall ; 27-reserved
dd undefined_syscall ; 28-reserved
dd sys_date ; 29-GetDate
dd sys_current_directory ; 30-Get/SetCurrentDirectory
dd undefined_syscall ; 31-reserved
dd undefined_syscall ; 32-reserved
dd undefined_syscall ; 33-reserved
dd syscall_getpixel_WinMap ; 34-GetPixel WinMap
dd syscall_getpixel ; 35-GetPixel
dd syscall_getarea ; 36-GetArea
dd readmousepos ; 37-GetMousePosition_ScreenRelative,.
dd syscall_drawline ; 38-DrawLine
dd sys_getbackground ; 39-GetBackgroundSize,ReadBgrData,.
dd set_app_param ; 40-WantEvents
dd undefined_syscall ; 41- deprecated GetIrqOwner
dd undefined_syscall ; 42- deprecated ReadIrqData
dd sys_outport ; 43-SendDeviceData
dd undefined_syscall ; 44- deprecated ProgramIrqs
dd undefined_syscall ; 45- deprecated ReserveIrq and FreeIrq
dd syscall_reserveportarea ; 46-ReservePortArea and FreePortArea
dd display_number ; 47-WriteNum
dd syscall_display_settings ; 48-SetRedrawType and SetButtonType
dd sys_apm ; 49-Advanced Power Management (APM)
dd syscall_set_window_shape ; 50-Window shape & scale
dd syscall_threads ; 51-Threads
dd stack_driver_stat ; 52-Stack driver status
dd cross_order ; 53-Socket interface
dd undefined_syscall ; 54-reserved
dd sound_interface ; 55-Sound interface
dd undefined_syscall ; 56-reserved
dd sys_pcibios ; 57-PCI BIOS32
dd cross_order ; 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 pci_api ;cross_order ; 62-PCI functions
dd cross_order ; 63-System message board
dd sys_resize_app_memory ; 64-Resize application memory usage
dd sys_putimage_palette ; 65-PutImagePalette
dd sys_process_def ; 66-Process definitions - keyboard
dd syscall_move_window ; 67-Window move or resize
dd f68 ; 68-Some internal services
dd sys_debug_services ; 69-Debug
dd file_system_lfn ; 70-Common file system interface, version 2
dd syscall_window_settings ; 71-Window settings
dd sys_sendwindowmsg ; 72-Send window message
dd blit_32 ; 73-blitter;
dd undefined_syscall ; 74-reserved for new stack
dd undefined_syscall ; 75-reserved for new stack
dd undefined_syscall ; 76-reserved for new stack
times 255 - ( ($-servetable2) /4 ) dd undefined_syscall
dd sys_end ; -1-end application
endg