0,0 → 1,130 |
/************************************************************************** |
* |
* Copyright 2007-2008 VMware, Inc. |
* 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 VMWARE 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 U_POINTER_H |
#define U_POINTER_H |
|
#include "pipe/p_compiler.h" |
|
#ifdef __cplusplus |
extern "C" { |
#endif |
|
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 ); |
} |
|
|
/** |
* Return a pointer aligned to next multiple of 16 bytes. |
*/ |
static INLINE void * |
align16( void *unaligned ) |
{ |
return align_pointer( unaligned, 16 ); |
} |
|
typedef void (*func_pointer)(void); |
|
static INLINE func_pointer |
pointer_to_func( void *p ) |
{ |
union { |
void *p; |
func_pointer f; |
} pf; |
pf.p = p; |
return pf.f; |
} |
|
static INLINE void * |
func_to_pointer( func_pointer f ) |
{ |
union { |
void *p; |
func_pointer f; |
} pf; |
pf.f = f; |
return pf.p; |
} |
|
|
#ifdef __cplusplus |
} |
#endif |
|
#endif /* U_POINTER_H */ |