[NTOS]: Implement the special NtRaiseException in C as well, just like we did for NtContinue.

svn path=/trunk/; revision=45143

reactos/ntoskrnl/include/internal/ke.h

@@ -932,6 +932,16 @@ KiEndUnexpectedRange(
     VOID
 );
 
+NTSTATUS
+NTAPI
+KiRaiseException(
+    IN PEXCEPTION_RECORD ExceptionRecord,
+    IN PCONTEXT Context,
+    IN PKEXCEPTION_FRAME ExceptionFrame,
+    IN PKTRAP_FRAME TrapFrame,
+    IN BOOLEAN SearchFrames
+);
+
 NTSTATUS
 NTAPI
 KiContinue(

reactos/ntoskrnl/ke/i386/trap.s

@@ -476,49 +476,11 @@ GENERATE_TRAP_HANDLER KiDebugService, 1
 
 .func NtRaiseException@12
 _NtRaiseException@12:
-
+    /* Call C code */
-    /* NOTE: We -must- be called by Zw* to have the right frame! */
+    mov ecx, [esp+4]
-    /* Push the stack frame */
+    mov edx, [esp+8]
-    push ebp
+    or edx, [esp+12]
-
+    jmp @NtRaiseExceptionHandler@8
-    /* Get the current thread and restore its trap frame */
-    mov ebx, PCR[KPCR_CURRENT_THREAD]
-    mov edx, [ebp+KTRAP_FRAME_EDX]
-    mov [ebx+KTHREAD_TRAP_FRAME], edx
-
-    /* Set up stack frame */
-    mov ebp, esp
-
-    /* Get the Trap Frame in EBX */
-    mov ebx, [ebp+0]
-
-    /* Get the exception list and restore */
-    mov eax, [ebx+KTRAP_FRAME_EXCEPTION_LIST]
-    mov PCR[KPCR_EXCEPTION_LIST], eax
-
-    /* Get the parameters */
-    mov edx, [ebp+16] /* Search frames */
-    mov ecx, [ebp+12] /* Context */
-    mov eax, [ebp+8]  /* Exception Record */
-
-    /* Raise the exception */
-    push edx
-    push ebx
-    push 0
-    push ecx
-    push eax
-    call _KiRaiseException@20
-
-    /* Restore trap frame in EBP */
-    pop ebp
-    mov esp, ebp
-
-    /* Check the result */
-    or eax, eax
-    jz _KiServiceExit2
-
-    /* Restore debug registers too */
-    jmp _KiServiceExit
 .endfunc
 
 .func NtContinue@8

reactos/ntoskrnl/ke/i386/traphdlr.c

@@ -1691,6 +1691,46 @@ KiDebugServiceHandler(IN PKTRAP_FRAME TrapFrame)
     KiDebugHandler(TrapFrame, TrapFrame->Eax, TrapFrame->Ecx, TrapFrame->Edx);
 }
 
+VOID
+FASTCALL
+NtRaiseExceptionHandler(IN PEXCEPTION_RECORD ExceptionRecord,
+                        IN PCONTEXT Context)
+{
+    BOOLEAN FirstChance;
+    NTSTATUS Status;
+    PKTHREAD Thread;
+    PKTRAP_FRAME TrapFrame;
+    
+    /* Fixup parameters */
+    FirstChance = (ULONG_PTR)Context & 1;
+    Context = (PVOID)((ULONG_PTR)Context & ~1);
+    
+    /* Get trap frame and link previous one*/
+    Thread = KeGetCurrentThread();
+    TrapFrame = Thread->TrapFrame;
+    Thread->TrapFrame = (PKTRAP_FRAME)TrapFrame->Edx;
+    
+    /* Set exception list */
+    KeGetPcr()->Tib.ExceptionList = TrapFrame->ExceptionList;
+    
+    /* Raise the exception */
+    Status = KiRaiseException(ExceptionRecord,
+                              Context,
+                              NULL,
+                              TrapFrame,
+                              FirstChance);
+    if (NT_SUCCESS(Status))
+    {
+        /* It was handled, so exit restoring all state */
+        KiServiceExit2(TrapFrame);
+    }
+    else
+    {
+        /* Exit with error */
+        KiServiceExit(TrapFrame, Status);
+    }
+}
+
 VOID
 FASTCALL
 NtContinueHandler(IN PCONTEXT Context,