3 files changed, 101 insertions, 0 deletions
diff --git a/src/util/Makefile.sources b/src/util/Makefile.sources
index ef38b5ac7d1..e45431d1de8 100644
--- a/src/util/Makefile.sources
+++ b/src/util/Makefile.sources
@@ -1,5 +1,7 @@
 MESA_UTIL_FILES :=	\
 	bitset.h \
+	debug.c \
+	debug.h \
 	format_srgb.h \
 	hash_table.c	\
 	hash_table.h \
diff --git a/src/util/debug.c b/src/util/debug.c
new file mode 100644
index 00000000000..3729ce85670
--- /dev/null
+++ b/src/util/debug.c
@@ -0,0 +1,53 @@
+/*
+ * Copyright © 2015 Intel Corporation
+ *
+ * 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, sublicense,
+ * 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 NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS 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 <string.h>
+#include "main/macros.h"
+#include "debug.h"
+
+uint64_t
+parse_debug_string(const char *debug,
+                   const struct debug_control *control)
+{
+   uint64_t flag = 0;
+
+   if (debug != NULL) {
+      for (; control->string != NULL; control++) {
+         if (!strcmp(debug, "all")) {
+            flag |= control->flag;
+
+         } else {
+            const char *s = debug;
+            unsigned n;
+
+            for (; n = strcspn(s, ", "), *s; s += MAX2(1, n)) {
+               if (strlen(control->string) == n &&
+                   !strncmp(control->string, s, n))
+                  flag |= control->flag;
+            }
+         }
+      }
+   }
+
+   return flag;
+}
diff --git a/src/util/debug.h b/src/util/debug.h
new file mode 100644
index 00000000000..801736aafff
--- /dev/null
+++ b/src/util/debug.h
@@ -0,0 +1,46 @@
+/*
+ * Copyright © 2015 Intel Corporation
+ *
+ * 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, sublicense,
+ * 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 NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS 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.
+ */
+
+#ifndef _DEBUG_H
+#define _DEBUG_H
+
+#include <stdint.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct debug_control {
+    const char * string;
+    uint64_t     flag;
+};
+
+uint64_t
+parse_debug_string(const char *debug,
+                   const struct debug_control *control);
+
+#ifdef __cplusplus
+} /* extern C */
+#endif
+
+#endif /* _DEBUG_H */