+++ /dev/null
-/*
- * COPYRIGHT: See COPYING in the top level directory
- * PROJECT: ReactOS NT Library
- * FILE: dl/ntdll/dispatch/i386/dispatch.S
- * PURPOSE: User-Mode NT Dispatchers
- * PROGRAMMERS: Alex Ionescu (alex@relsoft.net)
- */
-
-/* INCLUDES ******************************************************************/
-
-#include <asm.inc>
-#include <ks386.inc>
-
-EXTERN _LdrpInit@12:PROC
-EXTERN _NtTestAlert@0:PROC
-EXTERN _RtlDispatchException@8:PROC
-EXTERN _RtlRaiseException@4:PROC
-EXTERN _RtlRaiseStatus@4:PROC
-EXTERN _ZwCallbackReturn@12:PROC
-EXTERN _ZwContinue@8:PROC
-EXTERN _ZwRaiseException@12:PROC
-
-/* FUNCTIONS ****************************************************************/
-.code
-
-PUBLIC _LdrInitializeThunk@16
-_LdrInitializeThunk@16:
-
- /* Get the APC Context */
- lea eax, [esp+16]
-
- /* Send it as the first parameter */
- mov [esp+4], eax
-
- /* Terminate the frame list */
- xor ebp, ebp
-
- /* Jump into the C initialization routine */
- jmp _LdrpInit@12
-
-
-_KiUserApcExceptionHandler:
-
- /* Put the exception record in ECX and check the Flags */
- mov ecx, [esp+4]
- test dword ptr [ecx+EXCEPTION_RECORD_EXCEPTION_FLAGS], EXCEPTION_EXIT_UNWIND + EXCEPTION_UNWINDING
- jz .return
-
- /* Test alert the thread */
- call _NtTestAlert@0
-
-.return:
- /* We'll execute handler */
- mov eax, EXCEPTION_EXECUTE_HANDLER
- ret 16
-
-
-PUBLIC _KiUserApcDispatcher@16
-_KiUserApcDispatcher@16:
-
- /* Setup SEH stack */
- lea eax, [esp+CONTEXT_ALIGNED_SIZE+16]
- mov ecx, fs:[TEB_EXCEPTION_LIST]
- mov edx, offset _KiUserApcExceptionHandler
- mov [eax], ecx
- mov [eax+4], edx
-
- /* Enable SEH */
- mov fs:[TEB_EXCEPTION_LIST], eax
-
- /* Put the Context in EDI */
- pop eax
- lea edi, [esp+12]
-
- /* Call the APC Routine */
- call eax
-
- /* Restore exception list */
- mov ecx, [edi+CONTEXT_ALIGNED_SIZE]
- mov fs:[TEB_EXCEPTION_LIST], ecx
-
- /* Switch back to the context */
- push 1
- push edi
- call _ZwContinue@8
-
- /* Save callback return value */
- mov esi, eax
-
- /* Raise status */
-StatusRaiseApc:
- push esi
- call _RtlRaiseStatus@4
- jmp StatusRaiseApc
- ret 16
-
-
-_KiUserCallbackExceptionHandler:
-
- /* Put the exception record in ECX and check the Flags */
- mov ecx, [esp+4]
- test dword ptr [ecx+EXCEPTION_RECORD_EXCEPTION_FLAGS], EXCEPTION_EXIT_UNWIND + EXCEPTION_UNWINDING
- jz return
-
- /* Tell the kernel to invalidate the stack */
- push STATUS_CALLBACK_POP_STACK
- push 0
- push 0
- call _ZwCallbackReturn@12
-
-return:
- /* We'll execute the handler */
- mov eax, EXCEPTION_EXECUTE_HANDLER
- ret 16
-
-
-PUBLIC _KiUserCallbackDispatcher@12
-_KiUserCallbackDispatcher@12:
-
- /* Setup SEH stack */
- mov ecx, fs:[TEB_EXCEPTION_LIST]
- mov edx, offset _KiUserCallbackExceptionHandler
- lea eax, [esp+16]
- mov [esp+16], ecx
- mov [esp+20], edx
-
- /* Enable SEH */
- mov fs:[TEB_EXCEPTION_LIST], eax
-
- /* Get the callback Index */
- add esp, 4
- pop edx
-
- /* Get the callback table */
- mov eax, [fs:TEB_PEB]
- mov eax, [eax+PEB_KERNEL_CALLBACK_TABLE]
-
- /* Call the routine */
- call dword ptr [eax+edx*4]
-
- /* Return from callback */
- push eax
- push 0
- push 0
- call _ZwCallbackReturn@12
-
- /* Save callback return value */
- mov esi, eax
-
- /* Raise status */
-StatusRaise:
- push esi
- call _RtlRaiseStatus@4
- jmp StatusRaise
- ret 12
-
-
-PUBLIC _KiRaiseUserExceptionDispatcher@0
-_KiRaiseUserExceptionDispatcher@0:
-
- /* Setup stack for EXCEPTION_RECORD */
- push ebp
- mov ebp, esp
- sub esp, EXCEPTION_RECORD_LENGTH
-
- /* Fill out the record */
- mov [esp+EXCEPTION_RECORD_EXCEPTION_ADDRESS], eax
- mov eax, [fs:KPCR_TEB]
- mov eax, [eax+TEB_EXCEPTION_CODE]
- mov [esp+EXCEPTION_RECORD_EXCEPTION_CODE], eax
- mov dword ptr [esp+EXCEPTION_RECORD_EXCEPTION_FLAGS], 0
- mov dword ptr [esp+EXCEPTION_RECORD_EXCEPTION_RECORD], 0
- mov dword ptr [esp+EXCEPTION_RECORD_NUMBER_PARAMETERS], 0
-
- /* Raise the exception */
- push esp
- call _RtlRaiseException@4
-
- /* Return exception code */
- mov eax, [esp+EXCEPTION_RECORD_EXCEPTION_CODE]
- mov esp, ebp
- pop ebp
- ret
-
-
-PUBLIC _KiUserExceptionDispatcher@8
-.PROC _KiUserExceptionDispatcher@8
- FPO 0, 0, 0, 0, 0, FRAME_FPO
-
- /* Clear direction flag */
- cld
-
- /* Save the Context and Exception Records */
- mov ecx, [esp+4]
- mov ebx, [esp]
-
- /* Dispatch the exception */
- push ecx
- push ebx
- call _RtlDispatchException@8
-
- /* Check for success */
- or al, al
- jz RaiseException
-
- /* Pop off the records */
- pop ebx
- pop ecx
-
- /* We're fine, continue execution */
- push 0
- push ecx
- call _ZwContinue@8
-
- /* Exit */
- jmp Exit
-
-RaiseException:
- /* Pop off the records */
- pop ebx
- pop ecx
-
- /* Raise the exception */
- push 0
- push ecx
- push ebx
- call _ZwRaiseException@12
-
-Exit:
- /* Allocate space for the nested exception record */
- add esp, -SIZEOF_EXCEPTION_RECORD
-
- /* Set it up */
- mov [esp+EXCEPTION_RECORD_EXCEPTION_CODE], eax
- mov dword ptr [esp+EXCEPTION_RECORD_EXCEPTION_FLAGS], EXCEPTION_NONCONTINUABLE
- mov [esp+EXCEPTION_RECORD_EXCEPTION_RECORD], ebx
- mov dword ptr [esp+EXCEPTION_RECORD_NUMBER_PARAMETERS], 0
-
- /* Raise the exception */
- push esp
- call _RtlRaiseException@4
- ret 8
-
-.ENDP
-
-PUBLIC _KiIntSystemCall@0
-.PROC _KiIntSystemCall@0
- FPO 0, 0, 0, 0, 0, FRAME_FPO
-
- /* Set stack in EDX and do the interrupt */
- lea edx, [esp+8]
- int HEX(2E)
-
- /* Return to caller */
- ret
-
-.ENDP
-
-PUBLIC _KiFastSystemCall@0
-.PROC _KiFastSystemCall@0
- FPO 0, 0, 0, 0, 0, FRAME_FPO
-
- /* Put ESP in EDX and do the SYSENTER */
- mov edx, esp
- sysenter
-
-.ENDP
-
-PUBLIC _KiFastSystemCallRet@0
-.PROC _KiFastSystemCallRet@0
- FPO 0, 0, 0, 0, 0, FRAME_FPO
-
- /* Just return to caller */
- ret
-
-.ENDP
-
-PUBLIC _RtlpGetStackLimits@8
-_RtlpGetStackLimits@8:
-
- /* Get the stack limits */
- mov eax, [fs:TEB_STACK_LIMIT]
- mov ecx, [fs:TEB_STACK_BASE]
-
- /* Return them */
- mov edx, [esp+4]
- mov [edx], eax
- mov edx, [esp+8]
- mov [edx], ecx
-
- /* return */
- ret 8
-
-END
projects / reactos.git / blobdiff