Add MVME550 BSP

1 files changed, 57 insertions, 0 deletions

diff --git a/c/src/lib/libbsp/powerpc/mvme5500/vectors/bspException.h b/c/src/lib/libbsp/powerpc/mvme5500/vectors/bspException.h
new file mode 100644
index 0000000000..0b03fb8f6c
--- /dev/null
+++ b/c/src/lib/libbsp/powerpc/mvme5500/vectors/bspException.h
@@ -0,0 +1,57 @@
+#ifndef BSP_EXCEPTION_HANDLER_H
+#define BSP_EXCEPTION_HANDLER_H
+/* $Id$ */
+
+/* A slightly improved exception 'default' exception handler for RTEMS / SVGM */
+
+/* Author: Till Straumann <strauman@slac.stanford.edu>, 2002/5 */
+
+#include <bsp/vectors.h>
+
+/* Two types of exception intercepting / catching is supported:
+ *
+ *  - lowlevel handling (runs at IRQ level, before restoring any
+ *    task context).
+ *  - highlevel handling.
+ *
+ *  A lowlevel user hook is invoked twice, before and after processing
+ *  (printing) the exception.
+ *  If the user hook returns a nonzero value, normal processing
+ *  is skipped (including the second call to the hook)
+ *
+ *  If the hook returns nonzero to the second call, no default
+ *  'panic' occurs.
+ *
+ *  Default 'panic':
+ *   - if a task context is available:
+ *     - if a highlevel handler is installed, pass control
+ *       to the highlevel handler when returning from the
+ *       exception (the highlevel handler should probably
+ *       do a longjmp()). Otherwise:
+ * 	   - try to suspend interrupted task.
+ *   - hang if no task context is available.
+ *
+ */
+
+typedef struct BSP_ExceptionExtensionRec_ *BSP_ExceptionExtension;
+
+typedef int (*BSP_ExceptionHookProc)(BSP_Exception_frame *frame, BSP_ExceptionExtension ext, int after);
+
+typedef struct BSP_ExceptionExtensionRec_ {
+	BSP_ExceptionHookProc	lowlevelHook;
+	int						quiet;			/* silence the exception handler */
+	void					(*highlevelHook)(BSP_ExceptionExtension);
+	/* user fields may be added after this */
+} BSP_ExceptionExtensionRec;
+
+#define SRR1_TEA_EXC	(1<<(31-13))
+#define SRR1_MCP_EXC	(1<<(31-12))
+
+void
+BSP_exceptionHandler(BSP_Exception_frame* excPtr);
+
+/* install an exception handler to the current task context */
+BSP_ExceptionExtension
+BSP_exceptionHandlerInstall(BSP_ExceptionExtension e);
+
+#endif