13a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.org/************************************************************************** 23a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.org * 33a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.org * Copyright 2007-2008 Tungsten Graphics, Inc., Cedar Park, Texas. 43a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.org * All Rights Reserved. 53a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.org * 63a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.org * Permission is hereby granted, free of charge, to any person obtaining a 73a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.org * copy of this software and associated documentation files (the 83a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.org * "Software"), to deal in the Software without restriction, including 93a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.org * without limitation the rights to use, copy, modify, merge, publish, 103a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.org * distribute, sub license, and/or sell copies of the Software, and to 113a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.org * permit persons to whom the Software is furnished to do so, subject to 123a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.org * the following conditions: 133a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.org * 143a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.org * The above copyright notice and this permission notice (including the 153a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.org * next paragraph) shall be included in all copies or substantial portions 163a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.org * of the Software. 173a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.org * 183a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.org * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 193a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.org * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 203a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.org * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. 213a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.org * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR 223a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.org * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, 233a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.org * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE 243a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.org * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 253a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.org * 263a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.org **************************************************************************/ 273a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.org 283a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.org#ifndef U_POINTER_H 293a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.org#define U_POINTER_H 303a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.org 313a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.org#include "pipe/p_compiler.h" 323a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.org 333a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.org#ifdef __cplusplus 343a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.orgextern "C" { 353a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.org#endif 363a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.org 373a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.orgstatic INLINE intptr_t 383a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.orgpointer_to_intptr( const void *p ) 393a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.org{ 403a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.org union { 413a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.org const void *p; 423a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.org intptr_t i; 433a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.org } pi; 443a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.org pi.p = p; 453a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.org return pi.i; 463a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.org} 473a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.org 483a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.orgstatic INLINE void * 493a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.orgintptr_to_pointer( intptr_t i ) 503a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.org{ 513a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.org union { 523a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.org void *p; 533a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.org intptr_t i; 543a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.org } pi; 553a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.org pi.i = i; 563a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.org return pi.p; 573a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.org} 583a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.org 593a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.orgstatic INLINE uintptr_t 603a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.orgpointer_to_uintptr( const void *ptr ) 613a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.org{ 623a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.org union { 633a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.org const void *p; 643a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.org uintptr_t u; 653a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.org } pu; 663a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.org pu.p = ptr; 673a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.org return pu.u; 683a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.org} 693a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.org 703a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.orgstatic INLINE void * 713a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.orguintptr_to_pointer( uintptr_t u ) 723a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.org{ 733a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.org union { 743a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.org void *p; 753a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.org uintptr_t u; 763a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.org } pu; 773a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.org pu.u = u; 783a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.org return pu.p; 793a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.org} 803a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.org 813a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.org/** 823a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.org * Return a pointer aligned to next multiple of N bytes. 833a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.org */ 843a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.orgstatic INLINE void * 853a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.orgalign_pointer( const void *unaligned, uintptr_t alignment ) 863a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.org{ 873a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.org uintptr_t aligned = (pointer_to_uintptr( unaligned ) + alignment - 1) & ~(alignment - 1); 883a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.org return uintptr_to_pointer( aligned ); 893a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.org} 903a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.org 913a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.org 923a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.org/** 933a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.org * Return a pointer aligned to next multiple of 16 bytes. 943a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.org */ 953a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.orgstatic INLINE void * 963a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.orgalign16( void *unaligned ) 973a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.org{ 983a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.org return align_pointer( unaligned, 16 ); 993a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.org} 1003a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.org 101760fd893ba809a7a5daa25c2749ff502f7186e83kbr@chromium.orgtypedef void (*func_pointer)(void); 102760fd893ba809a7a5daa25c2749ff502f7186e83kbr@chromium.org 103760fd893ba809a7a5daa25c2749ff502f7186e83kbr@chromium.orgstatic INLINE func_pointer 104760fd893ba809a7a5daa25c2749ff502f7186e83kbr@chromium.orgpointer_to_func( void *p ) 105760fd893ba809a7a5daa25c2749ff502f7186e83kbr@chromium.org{ 106760fd893ba809a7a5daa25c2749ff502f7186e83kbr@chromium.org union { 107760fd893ba809a7a5daa25c2749ff502f7186e83kbr@chromium.org void *p; 108760fd893ba809a7a5daa25c2749ff502f7186e83kbr@chromium.org func_pointer f; 109760fd893ba809a7a5daa25c2749ff502f7186e83kbr@chromium.org } pf; 110760fd893ba809a7a5daa25c2749ff502f7186e83kbr@chromium.org pf.p = p; 111760fd893ba809a7a5daa25c2749ff502f7186e83kbr@chromium.org return pf.f; 112760fd893ba809a7a5daa25c2749ff502f7186e83kbr@chromium.org} 113760fd893ba809a7a5daa25c2749ff502f7186e83kbr@chromium.org 114760fd893ba809a7a5daa25c2749ff502f7186e83kbr@chromium.orgstatic INLINE void * 115760fd893ba809a7a5daa25c2749ff502f7186e83kbr@chromium.orgfunc_to_pointer( func_pointer f ) 116760fd893ba809a7a5daa25c2749ff502f7186e83kbr@chromium.org{ 117760fd893ba809a7a5daa25c2749ff502f7186e83kbr@chromium.org union { 118760fd893ba809a7a5daa25c2749ff502f7186e83kbr@chromium.org void *p; 119760fd893ba809a7a5daa25c2749ff502f7186e83kbr@chromium.org func_pointer f; 120760fd893ba809a7a5daa25c2749ff502f7186e83kbr@chromium.org } pf; 121760fd893ba809a7a5daa25c2749ff502f7186e83kbr@chromium.org pf.f = f; 122760fd893ba809a7a5daa25c2749ff502f7186e83kbr@chromium.org return pf.p; 123760fd893ba809a7a5daa25c2749ff502f7186e83kbr@chromium.org} 1243a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.org 1253a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.org 1263a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.org#ifdef __cplusplus 1273a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.org} 1283a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.org#endif 1293a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.org 1303a0db227ffe90888ad760c61a63226988c974e0apatrick@chromium.org#endif /* U_POINTER_H */ 131