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authorMichal Krol <michal@tungstengraphics.com>2008-02-20 22:03:59 +0100
committerJosé Fonseca <jrfonseca@tungstengraphics.com>2008-02-23 00:50:55 +0900
commitf44b30f1eb4896668c4fe91cd9b084ea63c9e915 (patch)
tree1482e64fe806dee1641ef912b9114ebe962230d4
parent26c57d163092d8069c69ff47929e73682b819ab2 (diff)
gallium: New file.
-rw-r--r--src/gallium/include/pipe/p_pointer.h87
1 files changed, 87 insertions, 0 deletions
diff --git a/src/gallium/include/pipe/p_pointer.h b/src/gallium/include/pipe/p_pointer.h
new file mode 100644
index 0000000000..e3927538e8
--- /dev/null
+++ b/src/gallium/include/pipe/p_pointer.h
@@ -0,0 +1,87 @@
+/**************************************************************************
+ *
+ * Copyright 2007-2008 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.
+ *
+ **************************************************************************/
+
+#ifndef P_POINTER_H
+#define P_POINTER_H
+
+#include "p_compiler.h"
+
+static INLINE intptr_t
+pointer_to_intptr( const void *p )
+{
+ union {
+ const void *p;
+ intptr_t i;
+ } pi;
+ pi.p = p;
+ return pi.i;
+}
+
+static INLINE void *
+intptr_to_pointer( intptr_t i )
+{
+ union {
+ void *p;
+ intptr_t i;
+ } pi;
+ pi.i = i;
+ return pi.p;
+}
+
+static INLINE uintptr_t
+pointer_to_uintptr( const void *ptr )
+{
+ union {
+ const void *p;
+ uintptr_t u;
+ } pu;
+ pu.p = ptr;
+ return pu.u;
+}
+
+static INLINE void *
+uintptr_to_pointer( uintptr_t u )
+{
+ union {
+ void *p;
+ uintptr_t u;
+ } pu;
+ pu.u = u;
+ return pu.p;
+}
+
+/**
+ * Return a pointer aligned to next multiple of N bytes.
+ */
+static INLINE void *
+align_pointer( const void *unaligned, uintptr_t alignment )
+{
+ uintptr_t aligned = (pointer_to_uintptr( unaligned ) + alignment - 1) & ~(alignment - 1);
+ return uintptr_to_pointer( aligned );
+}
+
+#endif /* P_POINTER_H */