diff options
author | Michal Krol <michal@tungstengraphics.com> | 2008-02-20 22:03:59 +0100 |
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committer | José Fonseca <jrfonseca@tungstengraphics.com> | 2008-02-23 00:50:55 +0900 |
commit | f44b30f1eb4896668c4fe91cd9b084ea63c9e915 (patch) | |
tree | 1482e64fe806dee1641ef912b9114ebe962230d4 /src/gallium/include/pipe/p_pointer.h | |
parent | 26c57d163092d8069c69ff47929e73682b819ab2 (diff) |
gallium: New file.
Diffstat (limited to 'src/gallium/include/pipe/p_pointer.h')
-rw-r--r-- | src/gallium/include/pipe/p_pointer.h | 87 |
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 */ |