ntoskrnl/Ke: setup stack segment selector in KeSetupsStackAndInitializeKernel, comment out decrement of Rip on int3 dispatch (needs further investigation), use CONTEXT_ALL flags when creating the CONTEXT from the trap frame in KeDispatchException

svn path=/branches/ros-amd64-bringup/; revision=39074

reactos/ntoskrnl/ke/amd64/boot.S

@@ -49,6 +49,8 @@ _KiSetupStackAndInitializeKernel:
     mov rsi, rsp
 
     /* Setup the new stack */
+    mov ax, 0x18
+    mov ss, ax
     mov rsp, r8
     sub rsp, 0x300 // FIXME
 

reactos/ntoskrnl/ke/amd64/except.c

@@ -107,14 +107,7 @@ KiDispatchException(IN PEXCEPTION_RECORD ExceptionRecord,
     KeGetCurrentPrcb()->KeExceptionDispatchCount++;
 
     /* Set the context flags */
-    Context.ContextFlags = CONTEXT_FULL | CONTEXT_DEBUG_REGISTERS;
-
-    /* Check if User Mode or if the debugger is enabled */
-    if ((PreviousMode == UserMode) || (KdDebuggerEnabled))
-    {
-        /* Add the FPU Flag */
-        Context.ContextFlags |= CONTEXT_FLOATING_POINT;
-    }
+    Context.ContextFlags = CONTEXT_ALL;
 
     /* Get a Context */
     KeTrapFrameToContext(TrapFrame, ExceptionFrame, &Context);
@@ -126,7 +119,8 @@ KiDispatchException(IN PEXCEPTION_RECORD ExceptionRecord,
         case STATUS_BREAKPOINT:
 
             /* Decrement RIP by one */
-            Context.Rip--;
+            // FIXME: that doesn't work, why?
+//            Context.Rip--;
             break;
 
         /* Internal exception */