Release 1.0

[palacios.git] / geekos / src / geekos / trap.c

diff --git a/geekos/src/geekos/trap.c b/geekos/src/geekos/trap.c
new file mode 100644 (file)
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+++ b/geekos/src/geekos/trap.c
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+/*
+ * Trap handlers
+ * Copyright (c) 2001,2003,2004 David H. Hovemeyer <daveho@cs.umd.edu>
+ * $Revision: 1.3 $
+ * 
+ * This is free software.  You are permitted to use,
+ * redistribute, and modify it as specified in the file "COPYING".
+ */
+
+#include <geekos/idt.h>
+#include <geekos/kthread.h>
+#include <geekos/defs.h>
+#include <geekos/trap.h>
+#include <geekos/serial.h>
+#include <geekos/debug.h>
+/*
+ * TODO: need to add handlers for other exceptions (such as bounds
+ * check, debug, etc.)
+ */
+
+/*
+ * Handler for general protection faults and other bad errors.
+ * Kill the current thread (which caused the fault).
+ */
+static void GPF_Handler(struct Interrupt_State* state)
+{
+    /* Send the thread to the reaper... */
+  SerialPrintLevel(1000,"VMM: Exception %d received, killing thread %p\n",state->intNum, g_currentThread);
+  Dump_Interrupt_State(state);
+  
+  Exit(-1);
+  
+  /* We will never get here */
+  KASSERT(false);
+}
+
+/*
+ * Initialize handlers for processor traps.
+ */
+void Init_Traps(void)
+{
+  PrintBoth("Initializing Traps\n");
+  Install_Interrupt_Handler(12, &GPF_Handler);  /* stack exception */
+  Install_Interrupt_Handler(13, &GPF_Handler);  /* general protection fault */
+}