Subversion Repositories Kolibri OS

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

;;                                                              ;;

;; Copyright (C) KolibriOS team 2004-2008. All rights reserved. ;;

;; Distributed under terms of the GNU General Public License    ;;

;;                                                              ;;

;;                                                              ;;

;;  MenuetOS process management, protected ring3                ;;

;;                                                              ;;

;;  Distributed under GPL. See file COPYING for details.        ;;

;;  Copyright 2003 Ville Turjanmaa                              ;;

;;                                                              ;;

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

$Revision: 996 $

align 4

init_idt:

           push edi

           push esi

           mov edi, idts

           mov dword [idtreg+2], edi

           mov esi, sys_int

           mov ecx, 0x40

@@:

           lodsd

           mov [edi],   ax                ; lower part of offset

           mov [edi+2], word sel_os_code  ; segment selector

           mov ax, word 10001110b shl 8   ; type: interrupt gate

           mov [edi+4], eax

           add edi, 8

           loop @b

           mov eax, _i40

           mov ecx, _i40

           and eax, 0x0000FFFF

           and ecx, 0xFFFF0000

           or eax, sel_app_code shl 16

           or ecx, (11101111b shl 8)

           mov [edi], eax

           mov [edi+4], ecx

           mov eax, i41

           mov ecx, i41

           and eax, 0x0000FFFF

           and ecx, 0xFFFF0000

           or eax, sel_os_code shl 16

           or ecx, (11101111b shl 8)

           mov [edi+8], eax

           mov [edi+12], ecx

           lidt [idtreg]

           pop esi

           pop edi

           ret

iglobal

  msg_sel_ker	db "kernel", 0

  msg_sel_app	db "application", 0

align 4

  sys_int:

    dd e0,debug_exc,e2,e3

    dd e4,e5,e6,e7

    dd e8,e9,e10,e11

    dd e12,e13,page_fault_handler,e15

    dd except_16, e17,e18, except_19

    times 12 dd unknown_interrupt

    dd	 irq0, irq_serv.irq_1, irq_serv.irq_2

if USE_COM_IRQ

    dd	 irq_serv.irq_3, irq_serv.irq_4

else

    dd	 p_irq3, p_irq4

end if

    dd	 irq_serv.irq_5,  p_irq6,	  irq_serv.irq_7

    dd	 irq_serv.irq_8,  irq_serv.irq_9, irq_serv.irq_10

    dd	 irq_serv.irq_11, irq_serv.irq_12,irqD ,p_irq14,p_irq15

    times 16 dd unknown_interrupt

    dd   i41

idtreg:

     dw   8*0x42-1

     dd   idts

endg

macro save_ring3_context

{

    pushad

}

macro restore_ring3_context

{

    popad

}

; simply return control to interrupted process

unknown_interrupt:

     iret

macro exc_wo_code [num]

{

  forward

  e#num :

      save_ring3_context

      mov bl, num

      jmp exc_c

}

macro exc_w_code [num]

{

  forward

  e#num :

      add esp, 4

      save_ring3_context

      mov bl, num

      jmp exc_c

}

exc_wo_code 0, 2, 3, 4, 5, 6, 9, 15, 18

exc_w_code 8, 10, 11, 12, 13, 14, 17

align 4

exc_c:

    mov   ax, sel_app_data  ;èñêëþ÷åíèå

    mov   ds, ax            ;çàãðóçèì ïðàâèëüíûå çíà÷åíèÿ'

    mov   es, ax            ;â ðåãèñòðû

; redirect to V86 manager? (EFLAGS & 0x20000) != 0?

	test	byte [esp+20h+8+2], 2

	jnz	v86_exc_c

; test if debugging

	cli

	mov   eax, [current_slot]

	mov   eax, [eax+APPDATA.debugger_slot]

	test  eax, eax

	jnz   .debug

	sti

; not debuggee => say error and terminate

	movzx eax, bl

	mov   [error_interrupt], eax

	call  show_error_parameters

	add   esp, 0x20

	mov   edx, [TASK_BASE]

	mov   [edx + TASKDATA.state], byte 4

	jmp   change_task

.debug:

; we are debugged process, notify debugger and suspend ourself

; eax=debugger PID

	cld

	movzx ecx, bl

	push  ecx

	mov   ecx, [TASK_BASE]

	push  dword [ecx+TASKDATA.pid]	  ; PID of current process

	push  12

	pop   ecx

	push  1        ; 1=exception

	call  debugger_notify

	pop   ecx

	pop   ecx

	pop   ecx

	mov   edx, [TASK_BASE]

	mov   byte [edx+TASKDATA.state], 1	  ; suspended

	call  change_task

	restore_ring3_context

	iretd

iglobal

	hexletters	db '0123456789ABCDEF'

	error_interrupt dd  -1

endg

;-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=

show_error_parameters:

    mov eax,[CURRENT_TASK]

    shl eax, 5

    DEBUGF  1, "K : Process - forced terminate PID: %x\n", [CURRENT_TASK + TASKDATA.pid + eax]

    mov eax, [error_interrupt]

    cmp al, 0x08

    jne @f

    DEBUGF  1, "K : Double fault\n"

    jmp defined_error

@@:

    cmp al, 0x0a

    jne @f

    DEBUGF  1, "K : Invalid TSS\n"

    jmp defined_error

@@:

    cmp al, 0x0b

    jne @f

    DEBUGF  1, "K : Segment not present\n"

    jmp defined_error

@@:

    cmp al, 0x0c

    jne @f

    DEBUGF  1, "K : Stack fault\n"

    jmp defined_error

@@:

    cmp al, 0x0d

    jne @f

    DEBUGF  1, "K : General protection fault\n"

    jmp defined_error

@@:

    cmp al, 0x0e

    jne @f

    DEBUGF  1, "K : Page fault\n"

    jmp defined_error

@@:

    DEBUGF  1, "K : Undefined Exception\n"

defined_error:

    DEBUGF  1, "K : EAX : %x EBX : %x ECX : %x\n", [esp + 0x20], [esp - 12 + 0x20], [esp - 4 + 0x20]

    DEBUGF  1, "K : EDX : %x ESI : %x EDI : %x\n", [esp - 8 + 0x20], [esp - 24 + 0x20], [esp - 28 + 0x20]

    DEBUGF  1, "K : EBP : %x EIP : %x ", [esp - 20 + 0x20], [esp + 4 + 0x20]

    mov eax, [esp + 8 + 0x20]

    mov edi, msg_sel_app

    mov ebx, [esp + 16 + 0x20]

    cmp eax, sel_app_code

    je	@f

    mov edi, msg_sel_ker

    mov ebx, [esp - 16 + 0x20]

@@:

    DEBUGF  1, "ESP : %x\nK : Flags : %x CS : %x (%s)\n", ebx, [esp + 12 + 0x20], eax, edi

    ret

;-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=

; irq1  ->  hid/keyboard.inc

macro irqh [num]

{

  forward

  p_irq#num :

     mov   edi, num

     jmp   irqhandler

}

irqh 2,3,4,5,7,8,9,10,11

p_irq6:

     save_ring3_context

     mov   ax, sel_app_data

     mov   ds, ax

     mov   es, ax

     call  fdc_irq

     call  ready_for_next_irq

     restore_ring3_context

     iret

p_irq14:

	save_ring3_context

    mov ax, sel_app_data

	mov	ds, ax

	mov	es, ax

	mov	byte [BOOT_VAR + 0x48E], 0xFF

	call	[irq14_func]

	call	ready_for_next_irq_1

	restore_ring3_context

	iret

p_irq15:

	save_ring3_context

    mov ax, sel_app_data

	mov	ds, ax

	mov	es, ax

	mov	byte [BOOT_VAR + 0x48E], 0xFF

	call	[irq15_func]

	call	ready_for_next_irq_1

	restore_ring3_context

	iret

ready_for_next_irq:

     mov    [check_idle_semaphore],5

     mov   al, 0x20

     out   0x20, al

     ret

ready_for_next_irq_1:

     mov    [check_idle_semaphore],5

     mov   al, 0x20

     out    0xa0,al

     out   0x20, al

     ret

irqD:

     save_ring3_context

     mov   ax, sel_app_data

     mov   ds, ax

     mov   es, ax

     mov   dx,0xf0

     mov   al,0

     out   dx,al

     mov   dx,0xa0

     mov   al,0x20

     out   dx,al

     mov   dx,0x20

     out   dx,al

     restore_ring3_context

     iret

irqhandler:

     mov    esi,edi	     ; 1

     shl    esi,6	     ; 1

     add    esi,irq00read    ; 1

     shl    edi,12	     ; 1

     add    edi,IRQ_SAVE

     mov    ecx,16

   irqnewread:

     dec    ecx

     js     irqover

     movzx  edx, word [esi]	   ; 2+

     test   edx, edx		   ; 1

     jz     irqover

     mov    ebx, [edi]		   ; address of begin of buffer in edi      ; + 0x0 dword - data size

     mov    eax, 4000							    ; + 0x4 dword - data begin offset

     cmp    ebx, eax

     je     irqfull

     add    ebx, [edi + 0x4]	   ; add data size to data begin offset

     cmp    ebx, eax		   ; if end of buffer, begin cycle again

     jb     @f

     xor    ebx, ebx

  @@:

     add    ebx, edi

     movzx  eax, byte[esi + 3]	   ; get type of data being received 1 - byte, 2 - word

     dec    eax

     jz     irqbyte

     dec    eax

     jnz    noirqword

     in     ax,dx

     cmp    ebx, 3999		   ; check for address odd in the end of buffer

     jne    .odd

     mov    [ebx + 0x10], ax

     jmp    .add_size

  .odd:

     mov    [ebx + 0x10], al	   ; I could make mistake here :)

     mov    [edi + 0x10], ah

  .add_size:

     add    dword [edi], 2

     jmp    nextport

  irqbyte:

     in     al,dx

     mov    [ebx + 0x10],al

     inc    dword [edi]

  nextport:

     add    esi,4

     jmp    irqnewread

   noirqword:

   irqfull:

   irqover:

     ret

set_application_table_status:

	push eax

	mov  eax,[CURRENT_TASK]

	shl  eax, 5

	add  eax,CURRENT_TASK+TASKDATA.pid

	mov  eax,[eax]

	mov  [application_table_status],eax

	pop  eax

	ret

clear_application_table_status:

	push eax

	mov  eax,[CURRENT_TASK]

	shl  eax, 5

	add  eax,CURRENT_TASK+TASKDATA.pid

	mov  eax,[eax]

	cmp  eax,[application_table_status]

	jne  apptsl1

	mov  [application_table_status],0

      apptsl1:

	pop  eax

	ret

sys_resize_app_memory:

	; eax = 1 - resize

	;     ebx = new amount of memory

	cmp    eax,1

	jne    .no_application_mem_resize

	stdcall new_mem_resize, ebx

	mov [esp+36], eax

	ret

.no_application_mem_resize:

	ret

sys_threads:

; eax=1 create thread

;

;   ebx=thread start

;   ecx=thread stack value

;

; on return : eax = pid

jmp new_sys_threads

iglobal

  process_terminating	db 'K : Process - terminating',13,10,0

  process_terminated	db 'K : Process - done',13,10,0

  msg_obj_destroy	db 'K : destroy app object',13,10,0

endg

; param

;  esi= slot

terminate: ; terminate application

	   .slot equ esp   ;locals

	   push   esi	   ;save .slot

	   shl esi, 8

	   cmp [SLOT_BASE+esi+APPDATA.dir_table], 0

	   jne @F

	   pop	  esi

	   shl	  esi, 5

	   mov	  [CURRENT_TASK+esi+TASKDATA.state], 9

	   ret

@@:

	   ;mov    esi,process_terminating

	   ;call   sys_msg_board_str

	   DEBUGF 1,"%s",process_terminating

@@:

	   cli

	   cmp	 [application_table_status],0

	   je	 term9

	   sti

	   call  change_task

	   jmp	 @b

term9:

	   call  set_application_table_status

; if the process is in V86 mode...

	mov	eax, [.slot]

	shl	eax, 8

	mov	esi, [eax+SLOT_BASE+APPDATA.pl0_stack]

	add	esi, RING0_STACK_SIZE

	cmp	[eax+SLOT_BASE+APPDATA.saved_esp0], esi

	jz	.nov86

; ...it has page directory for V86 mode

	mov	esi, [eax+SLOT_BASE+APPDATA.saved_esp0]

	mov	ecx, [esi+4]

	mov	[eax+SLOT_BASE+APPDATA.dir_table], ecx

; ...and I/O permission map for V86 mode

	mov	ecx, [esi+12]

	mov	[eax+SLOT_BASE+APPDATA.io_map], ecx

	mov	ecx, [esi+8]

	mov	[eax+SLOT_BASE+APPDATA.io_map+4], ecx

.nov86:

	   mov esi, [.slot]

	   shl esi,8

	   add esi, SLOT_BASE+APP_OBJ_OFFSET

@@:

	   mov eax, [esi+APPOBJ.fd]

	   test eax, eax

	   jz @F

	   cmp eax, esi

	   je @F

	   push esi

	   call [eax+APPOBJ.destroy]

	   DEBUGF 1,"%s",msg_obj_destroy

	   pop esi

	   jmp @B

@@:

	   mov eax, [.slot]

	   shl eax, 8

	   mov eax,[SLOT_BASE+eax+APPDATA.dir_table]

       stdcall destroy_app_space, eax

	   mov esi, [.slot]

	   cmp [fpu_owner],esi	 ; if user fpu last -> fpu user = 1

	   jne @F

	   mov [fpu_owner],1

	   mov eax, [256+SLOT_BASE+APPDATA.fpu_state]

	   clts

	   bt [cpu_caps], CAPS_SSE

	   jnc .no_SSE

	   fxrstor [eax]

	   jmp @F

.no_SSE:

	   fnclex

	   frstor [eax]

@@:

    mov   [KEY_COUNT], 0           ; empty keyboard buffer

    mov   [BTN_COUNT], 0           ; empty button buffer

; remove defined hotkeys

	mov	eax, hotkey_list

.loop:

	cmp	[eax+8], esi

	jnz	.cont

	mov	ecx, [eax]

	jecxz	@f

	push	dword [eax+12]

	pop	dword [ecx+12]

@@:

	mov	ecx, [eax+12]

	push	dword [eax]

	pop	dword [ecx]

	xor	ecx, ecx

	mov	[eax], ecx

	mov	[eax+4], ecx

	mov	[eax+8], ecx

	mov	[eax+12], ecx

.cont:

	add	eax, 16

	cmp	eax, hotkey_list+256*16

	jb	.loop

; remove hotkeys in buffer

	mov	eax, hotkey_buffer

.loop2:

	cmp	[eax], esi

	jnz	.cont2

	and	dword [eax+4], 0

	and	dword [eax], 0

.cont2:

	add	eax, 8

	cmp	eax, hotkey_buffer+120*8

	jb	.loop2

    mov   ecx,esi		  ; remove buttons

  bnewba2:

    mov   edi,[btn_addr]

    mov   eax,edi

    cld

    movzx ebx,word [edi]

    inc   bx

  bnewba:

    dec   bx

    jz	  bnmba

    add   eax,0x10

    cmp   cx,[eax]

    jnz   bnewba

    pusha

    mov   ecx,ebx

    inc   ecx

    shl   ecx,4

    mov   ebx,eax

    add   eax,0x10

    call  memmove

    dec   dword [edi]

    popa

    jmp   bnewba2

  bnmba:

    pusha     ; save window coordinates for window restoring

    cld

    shl   esi,5

    mov   eax,[window_data+esi+WDATA.box.left]

    mov   [dlx],eax

    add   eax,[window_data+esi+WDATA.box.width]

    mov   [dlxe],eax

    mov   eax,[window_data+esi+WDATA.box.top]

    mov   [dly],eax

    add   eax,[window_data+esi+WDATA.box.height]

    mov   [dlye],eax

    xor   eax, eax

    mov   [window_data+esi+WDATA.box.left],eax

    mov   [window_data+esi+WDATA.box.width],eax

    mov   [window_data+esi+WDATA.box.top],eax

    mov   [window_data+esi+WDATA.box.height],eax

    mov   [window_data+esi+WDATA.cl_workarea],eax

    mov   [window_data+esi+WDATA.cl_titlebar],eax

    mov   [window_data+esi+WDATA.cl_frames],eax

    mov   dword [window_data+esi+WDATA.reserved],eax ; clear all flags: wstate, redraw, wdrawn

    lea   edi, [esi+draw_data]

    mov   ecx,32/4

    rep   stosd

    popa

; debuggee test

    pushad

    mov  edi, esi

    shl  edi, 5

    mov  eax, [SLOT_BASE+edi*8+APPDATA.debugger_slot]

    test eax, eax

    jz	 .nodebug

    push 8

    pop  ecx

    push dword [CURRENT_TASK+edi+TASKDATA.pid]	 ; PID

    push 2

    call debugger_notify

    pop  ecx

    pop  ecx

.nodebug:

           popad

           mov edi, [.slot]

           shl edi, 8

           add edi,SLOT_BASE

           mov ecx,[edi+APPDATA.pl0_stack]

           sub ecx, OS_BASE

           call @core_free@4

           mov ecx,[edi+APPDATA.cur_dir]

           sub ecx, OS_BASE

           call @core_free@4

           mov ecx, [edi+APPDATA.io_map]

           cmp ecx, (tss._io_map_0-OS_BASE+PG_MAP)

           je @F

           call @core_free@4

@@:

           mov ecx, [edi+APPDATA.io_map+4]

           cmp ecx, (tss._io_map_1-OS_BASE+PG_MAP)

           je @F

           call @core_free@4

@@:

	   mov eax, 0x20202020

	   stosd

	   stosd

	   stosd

	   mov ecx,244/4

	   xor eax, eax

	   rep stosd

  ; activate window

	movzx  eax, word [WIN_STACK + esi*2]

	cmp    eax, [TASK_COUNT]

	jne    .dont_activate

	pushad

 .check_next_window:

	dec    eax

	cmp    eax, 1

	jbe    .nothing_to_activate

	lea    esi, [WIN_POS+eax*2]

	movzx  edi, word [esi]		     ; edi = process

	shl    edi, 5

	cmp    [CURRENT_TASK + edi + TASKDATA.state], byte 9  ; skip dead slots

	je     .check_next_window

	add    edi, window_data

; \begin{diamond}[19.09.2006]

; skip minimized windows

	test   [edi + WDATA.fl_wstate], WSTATE_MINIMIZED

	jnz    .check_next_window

; \end{diamond}

	call   waredraw

 .nothing_to_activate:

	popad

 .dont_activate:

	push	esi	; remove hd1 & cd & flp reservation

	shl	esi, 5

	mov	esi, [esi+CURRENT_TASK+TASKDATA.pid]

	cmp	[hd1_status], esi

	jnz	@f

	call	free_hd_channel

	mov	[hd1_status], 0

@@:

	cmp	[cd_status], esi

	jnz	@f

	call	free_cd_channel

	mov	[cd_status], 0

@@:

	cmp	[flp_status], esi

	jnz	@f

	mov	[flp_status], 0

@@:

	pop	esi

	cmp	[bgrlockpid], esi

	jnz	@f

	and	[bgrlockpid], 0

	mov	[bgrlock], 0

@@:

    pusha ; remove all irq reservations

    mov   eax,esi

    shl   eax, 5

    mov   eax,[eax+CURRENT_TASK+TASKDATA.pid]

    mov   edi,irq_owner

    xor   ebx, ebx

    xor   edx, edx

  newirqfree:

    cmp   [edi + 4 * ebx], eax

    jne   nofreeirq

    mov   [edi + 4 * ebx], edx				; remove irq reservation

    mov   [irq_tab + 4 * ebx], edx			; remove irq handler

    mov   [irq_rights + 4 * ebx], edx			; set access rights to full access

  nofreeirq:

    inc   ebx

    cmp   ebx, 16

    jb	  newirqfree

    popa

    pusha		      ; remove all port reservations

    mov   edx,esi

    shl   edx, 5

    add   edx,CURRENT_TASK

    mov   edx,[edx+TASKDATA.pid]

  rmpr0:

    mov   esi,[RESERVED_PORTS]

    cmp   esi,0

    je	  rmpr9

  rmpr3:

    mov   edi,esi

    shl   edi,4

    add   edi,RESERVED_PORTS

    cmp   edx,[edi]

    je	  rmpr4

    dec   esi

    jnz   rmpr3

    jmp   rmpr9

  rmpr4:

    mov   ecx,256

    sub   ecx,esi

    shl   ecx,4

    mov   esi,edi

    add   esi,16

    cld

    rep   movsb

    dec   dword [RESERVED_PORTS]

    jmp   rmpr0

  rmpr9:

    popa

    mov  edi,esi	 ; do not run this process slot

    shl  edi, 5

    mov  [edi+CURRENT_TASK + TASKDATA.state],byte 9

; debugger test - terminate all debuggees

    mov  eax, 2

    mov  ecx, SLOT_BASE+2*0x100+APPDATA.debugger_slot

.xd0:

    cmp  eax, [TASK_COUNT]

    ja	 .xd1

    cmp  dword [ecx], esi

    jnz  @f

    and  dword [ecx], 0

    pushad

    xchg eax, ecx

    mov  ebx, 2

    call sys_system

    popad

@@:

    inc  eax

    add  ecx, 0x100

    jmp  .xd0

.xd1:

;    call  systest

    sti  ; .. and life goes on

    mov   eax, [dlx]

    mov   ebx, [dly]

    mov   ecx, [dlxe]

    mov   edx, [dlye]

    call  calculatescreen

    xor   eax, eax

    xor   esi, esi

    call  redrawscreen

    mov   [application_table_status],0

    ;mov   esi,process_terminated

    ;call  sys_msg_board_str

    DEBUGF 1,"%s",process_terminated

    add esp, 4

    ret

restore .slot

iglobal

  boot_sched_1	  db   'Building gdt tss pointer',0

  boot_sched_2	  db   'Building IDT table',0

endg

build_scheduler:

	mov    esi,boot_sched_1

	call   boot_log

  ;      call   build_process_gdt_tss_pointer

  ;      mov    esi,boot_sched_2

  ;      call   boot_log

	ret