diff --git a/src/mesa/SConscript b/src/mesa/SConscript
index 70a98f3..faf8c84 100644
--- a/src/mesa/SConscript
+++ b/src/mesa/SConscript
@@ -158,6 +158,7 @@
 ]
 
 PIPEUTIL_SOURCES = [
+	'pipe/util/p_debug.c',
 	'pipe/util/p_tile.c',
 	'pipe/util/p_util.c',
 ]
diff --git a/src/mesa/pipe/p_debug.h b/src/mesa/pipe/p_debug.h
new file mode 100644
index 0000000..b037eba
--- /dev/null
+++ b/src/mesa/pipe/p_debug.h
@@ -0,0 +1,79 @@
+/**************************************************************************
+ * 
+ * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * All Rights Reserved.
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ * 
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
+ * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
+ * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ * 
+ **************************************************************************/
+
+/**
+ * @file
+ * Cross-platform debugging helpers.
+ * 
+ * For now it just has assert and printf replacements, but it might be extended 
+ * with stack trace reports and more advanced logging in the near future. 
+ * 
+ * @author Jose Fonseca <jrfonseca@tungstengraphics.com>
+ */
+
+#ifndef P_DEBUG_H_
+#define P_DEBUG_H_
+
+#ifdef	__cplusplus
+extern "C" {
+#endif
+
+
+#ifdef DBG
+#ifndef DEBUG
+#define DEBUG 1
+#endif
+#else
+#ifndef NDEBUG
+#define NDEBUG 1
+#endif
+#endif
+
+
+void debug_printf(const char *format, ...);
+void debug_assert_fail(const char *expr, const char *file, unsigned line);
+
+/** Assert macro */
+#ifdef DEBUG
+#define debug_assert(expr) ((expr) ? (void)0 : debug_assert_fail(#expr, __FILE__, __LINE__))
+#else
+#define debug_assert(expr) ((void)0)
+#endif
+
+
+#ifdef assert
+#warning Standard C Library assert macro usage detected. 
+#undef assert
+#endif
+#define assert(expr) debug_assert(expr)
+
+
+#ifdef	__cplusplus
+}
+#endif
+
+#endif /* P_DEBUG_H_ */
diff --git a/src/mesa/pipe/util/p_debug.c b/src/mesa/pipe/util/p_debug.c
new file mode 100644
index 0000000..faa093e
--- /dev/null
+++ b/src/mesa/pipe/util/p_debug.c
@@ -0,0 +1,70 @@
+/**************************************************************************
+ * 
+ * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * All Rights Reserved.
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ * 
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
+ * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
+ * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ * 
+ **************************************************************************/
+
+
+#include <stdarg.h>
+
+#ifdef WIN32
+#include <windows.h>
+#include <winddi.h>
+#else
+#include <stdio.h>
+#include <stdlib.h>
+#endif
+
+#include "pipe/p_debug.h" 
+#include "pipe/p_compiler.h" 
+
+
+void debug_printf(const char *format, ...)
+{
+   va_list ap;
+   va_start( ap, format );  
+#ifdef WIN32
+   EngDebugPrint("Gallium3D: ", (PCHAR)format, ap);
+#else
+   vfprintf(stderr, format, ap);
+#endif
+   va_end( ap );
+}
+
+
+static INLINE debug_abort(void) 
+{
+#ifdef WIN32
+   EngDebugBreak();
+#else
+   abort();
+#endif
+}
+
+
+void debug_assert_fail(const char *expr, const char *file, unsigned line) 
+{
+   debug_printf("%s:%i: Assertion `%s' failed.");
+   debug_abort();
+}
diff --git a/src/mesa/sources b/src/mesa/sources
index e31d8cc..c0087f7 100644
--- a/src/mesa/sources
+++ b/src/mesa/sources
@@ -195,6 +195,7 @@
 	pipe/cso_cache/cso_cache.c
 
 PIPEUTIL_SOURCES = \
+	pipe/util/p_debug.c \
 	pipe/util/p_tile.c \
 	pipe/util/p_util.c