Index: kernel/generic/include/stacktrace.h
===================================================================
--- kernel/generic/include/stacktrace.h	(revision f60698019d715cbc868b3b1a32f7dac05bdc4ee4)
+++ kernel/generic/include/stacktrace.h	(revision f60698019d715cbc868b3b1a32f7dac05bdc4ee4)
@@ -0,0 +1,75 @@
+/*
+ * Copyright (c) 2009 Jakub Jermar
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup genericdebug 
+ * @{
+ */
+/** @file
+ */
+
+#ifndef KERN_STACKTRACE_H_
+#define KERN_STACKTRACE_H_
+
+#include <arch/types.h>
+#include <typedefs.h>
+
+/* Forward declarations. */
+struct istate;
+
+typedef struct {
+	bool (* frame_pointer_validate)(uintptr_t);
+	bool (* frame_pointer_prev)(uintptr_t, uintptr_t *);
+	bool (* return_address_get)(uintptr_t, uintptr_t *);
+	bool (* symbol_resolve)(uintptr_t, char **, uintptr_t *);
+} stack_trace_ops_t;
+
+extern stack_trace_ops_t kst_ops;
+extern stack_trace_ops_t ust_ops;
+
+extern void stack_trace(void);
+extern void stack_trace_istate(struct istate *);
+extern void stack_trace_fp_pc(stack_trace_ops_t *, uintptr_t, uintptr_t);
+
+/*
+ * The following interface is to be implemented by each architecture.
+ */
+extern uintptr_t frame_pointer_get(void);
+extern uintptr_t program_counter_get();
+
+extern bool kernel_frame_pointer_validate(uintptr_t);
+extern bool kernel_frame_pointer_prev(uintptr_t, uintptr_t *);
+extern bool kernel_return_address_get(uintptr_t, uintptr_t *);
+
+extern bool uspace_frame_pointer_validate(uintptr_t);
+extern bool uspace_frame_pointer_prev(uintptr_t, uintptr_t *);
+extern bool uspace_return_address_get(uintptr_t, uintptr_t *);
+
+#endif
+
+/** @}
+ */