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Rev 1289 Rev 1292
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;; Copyright (C) KolibriOS team 2004-2009. All rights reserved. ;;
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;; Copyright (C) KolibriOS team 2004-2009. All rights reserved. ;;
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;; Distributed under terms of the GNU General Public License    ;;
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;; Distributed under terms of the GNU General Public License    ;;
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;;                                                              ;;
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;;                                                              ;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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$Revision: 1289 $
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$Revision: 1292 $
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1308 
	   jz  .fail_and_dereference
 1308 
	   jz  .fail_and_dereference
1309 
@@:
 1309 
@@:
1310 
	   mov [img_base], eax
 1310 
	   mov [img_base], eax
1311 
	   mov ebx, [CURRENT_TASK]
 1311 
	   mov ebx, [CURRENT_TASK]
1312 
	   shl ebx, 5
 1312 
	   shl ebx, 5
1313 
	   add ebx, [CURRENT_TASK+ebx+TASKDATA.pid]
 1313 
	   mov ebx, [CURRENT_TASK+ebx+TASKDATA.pid]
1314 
	   mov eax, HDLL.sizeof
 1314 
	   mov eax, HDLL.sizeof
1315 
	   call create_kernel_object
 1315 
	   call create_kernel_object
1316 
	   test eax, eax
 1316 
	   test eax, eax
1317 
	   jz .fail_and_free_user
 1317 
	   jz .fail_and_free_user
1318 
	   mov [eax+APPOBJ.magic], 'HDLL'
 1318 
	   mov [eax+APPOBJ.magic], 'HDLL'
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1382 
	jnz	.ret
 1382 
	jnz	.ret
1383 
	mov	eax, [esi+DLLDESCR.fd]
 1383 
	mov	eax, [esi+DLLDESCR.fd]
1384 
	mov	edx, [esi+DLLDESCR.bk]
 1384 
	mov	edx, [esi+DLLDESCR.bk]
1385 
	mov	[eax+DLLDESCR.bk], edx
 1385 
	mov	[eax+DLLDESCR.bk], edx
1386 
	mov	[edx+DLLDESCR.fd], eax
 1386 
	mov	[edx+DLLDESCR.fd], eax
1387 
	stdcall	kernel_free, [esi+DLLDESCR.symbols_ptr]
 1387 
	stdcall	kernel_free, [esi+DLLDESCR.coff_hdr]
1388 
	stdcall	kernel_free, [esi+DLLDESCR.data]
 1388 
	stdcall	kernel_free, [esi+DLLDESCR.data]
1389 
	mov	eax, esi
 1389 
	mov	eax, esi
1390 
	call	free
 1390 
	call	free
1391 
.ret:
 1391 
.ret:
1392 
	ret
 1392 
	ret
Line 1393... Line 1393...
1393 
 
 1393 
 
1394 
destroy_hdll:
 1394 
destroy_hdll:
1395 
	push	ebx esi edi
 1395 
	push	ebx esi edi
1396 
	push	eax
 1396 
	push	eax
1397 
	mov	ebx, [eax+HDLL.base]
 - 
 
1398 
	push	ebx	; argument for user_free
 - 
 
1399 
	push	eax
 1397 
	mov	ebx, [eax+HDLL.base]
1400 
	mov	esi, [eax+HDLL.parent]
 1398 
	mov	esi, [eax+HDLL.parent]
- 
 
 1399 
	mov	edx, [esi+DLLDESCR.size]
- 
 
 1400 
; The following actions require the context of application where HDLL is mapped.
- 
 
 1401 
; However, destroy_hdll can be called in the context of OS thread when
- 
 
 1402 
; cleaning up objects created by the application which is destroyed.
- 
 
 1403 
; So remember current cr3 and set it to page table of target.
- 
 
 1404 
	mov	eax, [eax+HDLL.pid]
- 
 
 1405 
	call	pid_to_slot
- 
 
 1406 
	shl	eax, 8
- 
 
 1407 
	add	eax, SLOT_BASE
- 
 
 1408 
	mov	ecx, [eax+APPDATA.dir_table]
- 
 
 1409 
; Because we cheat with cr3, disable interrupts: task switch would restore
- 
 
 1410 
; page table from APPDATA of current thread.
- 
 
 1411 
; Also set [current_slot] because it is used by user_free.
- 
 
 1412 
	pushf
- 
 
 1413 
	cli
- 
 
 1414 
	push	[current_slot]
- 
 
 1415 
	mov	[current_slot], eax
- 
 
 1416 
	mov	eax, cr3
- 
 
 1417 
	push	eax
- 
 
 1418 
	mov	cr3, ecx
1401 
	mov	edx, [esi+DLLDESCR.size]
 1419 
	push	ebx	; argument for user_free
1402 
	mov	eax, ebx
 1420 
	mov	eax, ebx
1403 
	shr	ebx, 12
 1421 
	shr	ebx, 12
1404 
	push	ebx
 1422 
	push	ebx
1405 
	mov	esi, [esi+DLLDESCR.data]
 1423 
	mov	esi, [esi+DLLDESCR.data]
1406 
	shr	esi, 12
 1424 
	shr	esi, 12
1407 
.unmap_loop:
 1425 
.unmap_loop:
1408 
	push	eax
 1426 
	push	eax
1409 
	mov	eax, 2
 1427 
	mov	eax, 2
1410 
	xchg	eax, [page_tabs+ebx*4]
 1428 
	xchg	eax, [page_tabs+ebx*4]
- 
 
 1429 
	mov	ecx, [page_tabs+esi*4]
- 
 
 1430 
	and	eax, not 0xFFF
- 
 
 1431 
	and	ecx, not 0xFFF
1411 
	cmp	eax, [page_tabs+esi*4]
 1432 
	cmp	eax, ecx
1412 
	jnz	@f
 1433 
	jz	@f
1413 
	call	free_page
 1434 
	call	free_page
1414 
@@:
 1435 
@@:
1415 
	pop	eax
 1436 
	pop	eax
1416 
	invlpg	[eax]
 1437 
	invlpg	[eax]
1417 
	add	eax, 0x1000
 1438 
	add	eax, 0x1000
1418 
	inc	ebx
 1439 
	inc	ebx
1419 
	inc	esi
 1440 
	inc	esi
1420 
	sub	edx, 0x1000
 1441 
	sub	edx, 0x1000
1421 
	ja	.unmap_loop
 1442 
	ja	.unmap_loop
1422 
	pop	ebx eax
 1443 
	pop	ebx
- 
 
 1444 
	and	dword [page_tabs+(ebx-1)*4], not DONT_FREE_BLOCK
- 
 
 1445 
	call	user_free
- 
 
 1446 
; Restore context.
- 
 
 1447 
	pop	eax
- 
 
 1448 
	mov	cr3, eax
- 
 
 1449 
	pop	[current_slot]
- 
 
 1450 
	popf
- 
 
 1451 
; Ok, cheating is done.
- 
 
 1452 
	pop	eax
1423 
	and	dword [page_tabs+(ebx-1)*4], not DONT_FREE_BLOCK
 1453 
	push	eax
1424 
	mov	esi, [eax+HDLL.parent]
 1454 
	mov	esi, [eax+HDLL.parent]
1425 
	mov	eax, [eax+HDLL.refcount]
 1455 
	mov	eax, [eax+HDLL.refcount]
1426 
	call	dereference_dll
 - 
 
1427 
	call	user_free
 1456 
	call	dereference_dll
1428 
	pop	eax
 1457 
	pop	eax
1429 
	call	destroy_kernel_object
 1458 
	call	destroy_kernel_object
1430 
	pop	edi esi ebx
 1459 
	pop	edi esi ebx