WIP kdbg work.

ntoskrnl/kd/kdinit.c

@@ -39,9 +39,8 @@ extern ANSI_STRING KdpLogFileName;
 
 /* PRIVATE FUNCTIONS *********************************************************/
 
-INIT_FUNCTION
+static INIT_FUNCTION
 PCHAR
-NTAPI
 KdpGetDebugMode(PCHAR Currentp2)
 {
     PCHAR p1, p2 = Currentp2;
@@ -135,9 +134,8 @@ KdpGetDebugMode(PCHAR Currentp2)
     return p2;
 }
 
-INIT_FUNCTION
+static INIT_FUNCTION
 VOID
-NTAPI
 KdpCallInitRoutine(ULONG BootPhase)
 {
     PLIST_ENTRY CurrentEntry;

ntoskrnl/kd/kdio.c

@@ -423,10 +423,12 @@ KdpScreenAcquire(VOID)
         InbvEnableDisplayString(TRUE);
         InbvSetScrollRegion(0, 0, 639, 479);
     }
+    else
+    {
+        DbgPrint("********* -----> Could NOT acquire SCREEN!! <----- *********\n");
+    }
 }
 
-// extern VOID NTAPI InbvSetDisplayOwnership(IN BOOLEAN DisplayOwned);
-
 VOID
 KdpScreenRelease(VOID)
 {
@@ -434,7 +436,6 @@ KdpScreenRelease(VOID)
         InbvCheckDisplayOwnership())
     {
         /* Release the display */
-        // InbvSetDisplayOwnership(FALSE);
         InbvNotifyDisplayOwnershipLost(NULL);
     }
 }
@@ -632,6 +633,14 @@ KdpPromptString(
     USHORT i;
     ULONG DummyScanCode;
 
+/*************************/
+    /**/if (!(KdbDebugState & KD_DEBUG_KDSERIAL))/**/
+    KbdDisableMouse();
+    /* Take control of the display */
+    if (KdpDebugMode.Screen)
+        KdpScreenAcquire();
+/*************************/
+
     StringChar.Buffer = &Response;
     StringChar.Length = StringChar.MaximumLength = sizeof(Response);
 
@@ -648,8 +657,8 @@ KdpPromptString(
     /* Acquire the printing spinlock without waiting at raised IRQL */
     OldIrql = KdpAcquireLock(&KdpSerialSpinLock);
 
-    if (!(KdbDebugState & KD_DEBUG_KDSERIAL))
-        KbdDisableMouse();
+    // if (!(KdbDebugState & KD_DEBUG_KDSERIAL))
+        // KbdDisableMouse();
 
     /* Loop the whole string */
     for (i = 0; i < ResponseString->MaximumLength; i++)
@@ -711,8 +720,8 @@ KdpPromptString(
     /* Return the length */
     ResponseString->Length = i;
 
-    if (!(KdbDebugState & KD_DEBUG_KDSERIAL))
-        KbdEnableMouse();
+    // if (!(KdbDebugState & KD_DEBUG_KDSERIAL))
+        // KbdEnableMouse();
 
     /* Release the spinlock */
     KdpReleaseLock(&KdpSerialSpinLock, OldIrql);
@@ -721,6 +730,14 @@ KdpPromptString(
     *StringChar.Buffer = '\n';
     KdpPrintString(&StringChar);
 
+/*************************/
+    /* Release the display */
+    if (KdpDebugMode.Screen)
+        KdpScreenRelease();
+    /**/if (!(KdbDebugState & KD_DEBUG_KDSERIAL))/**/
+    KbdEnableMouse();
+/*************************/
+
     /* Success; we don't need to resend */
     return FALSE;
 }

ntoskrnl/kdbg/kdb.c

@@ -1216,11 +1216,11 @@ KdbpInternalEnter(VOID)
     PVOID SavedInitialStack, SavedStackBase, SavedKernelStack;
     ULONG SavedStackLimit;
 
-    KbdDisableMouse();
+    // KbdDisableMouse();
 
-    /* Take control of the display */
-    if (KdpDebugMode.Screen)
-        KdpScreenAcquire();
+    // /* Take control of the display */
+    // if (KdpDebugMode.Screen)
+        // KdpScreenAcquire();
 
     /* Call the interface's main loop on a different stack */
     Thread = PsGetCurrentThread();
@@ -1241,11 +1241,11 @@ KdbpInternalEnter(VOID)
     Thread->Tcb.StackLimit = SavedStackLimit;
     Thread->Tcb.KernelStack = SavedKernelStack;
 
-    /* Release the display */
-    if (KdpDebugMode.Screen)
-        KdpScreenRelease();
+    // /* Release the display */
+    // if (KdpDebugMode.Screen)
+        // KdpScreenRelease();
 
-    KbdEnableMouse();
+    // KbdEnableMouse();
 }
 
 static ULONG
@@ -1356,6 +1356,13 @@ KdbEnterDebuggerException(
         EnterConditionMet = FALSE;
     }
 
+/*************************/
+    KbdDisableMouse();
+    /* Take control of the display */
+    if (KdpDebugMode.Screen)
+        KdpScreenAcquire();
+/*************************/
+
     /* If we stopped on one of our breakpoints then let the user know */
     KdbLastBreakPointNr = -1;
     KdbEnteredOnSingleStep = FALSE;
@@ -1531,7 +1538,9 @@ KdbEnterDebuggerException(
         {
             if (!EnterConditionMet)
             {
-                return kdHandleException;
+                // return kdHandleException;
+                ContinueType = kdHandleException;
+                goto cleanup_quit;
             }
 
             KdbpPrint("\nEntered debugger on unexpected debug trap!\n");
@@ -1546,7 +1555,9 @@ KdbEnterDebuggerException(
         }
         if (!EnterConditionMet)
         {
-            return kdHandleException;
+            // return kdHandleException;
+            ContinueType = kdHandleException;
+            goto cleanup_quit;
         }
 
         KdbpPrint("\nEntered debugger on embedded INT3 at 0x%04x:0x%08x.\n",
@@ -1560,7 +1571,8 @@ KdbEnterDebuggerException(
 
         if (!EnterConditionMet)
         {
-            return ContinueType;
+            // return ContinueType;
+            goto cleanup_quit;
         }
 
         KdbpPrint("\nEntered debugger on %s-chance exception (Exception Code: 0x%x) (%s)\n",
@@ -1616,7 +1628,9 @@ KdbEnterDebuggerException(
     if (InterlockedIncrement(&KdbEntryCount) > 1)
     {
         __writeeflags(OldEflags);
-        return kdHandleException;
+        // return kdHandleException;
+        ContinueType = kdHandleException;
+        goto cleanup_quit;
     }
 
     /* Call the main loop */
@@ -1669,6 +1683,14 @@ KdbEnterDebuggerException(
     }
 
 continue_execution:
+
+/*************************/
+    /* Release the display */
+    if (KdpDebugMode.Screen)
+        KdpScreenRelease();
+    KbdEnableMouse();
+/*************************/
+
     /* Clear debug status */
     if (ExceptionCode == STATUS_BREAKPOINT) /* FIXME: Why clear DR6 on INT3? */
     {
@@ -1688,6 +1710,17 @@ continue_execution:
         }
     }
 
+    return ContinueType;
+
+cleanup_quit:
+
+/*************************/
+    /* Release the display */
+    if (KdpDebugMode.Screen)
+        KdpScreenRelease();
+    KbdEnableMouse();
+/*************************/
+
     return ContinueType;
 }
 
@@ -1699,7 +1732,8 @@ KdbpGetCommandLineSettings(
 {
 #define CONST_STR_LEN(x) (sizeof(x)/sizeof(x[0]) - 1)
 
-    while (p1 && (p1 = strchr(p1, ' ')))
+    /* Loop through the switches */
+    for (; p1 && *p1; p1 = strchr(p1, ' '))
     {
         /* Skip other spaces */
         while (*p1 == ' ') ++p1;