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  1. /**************************************************************************
  2.  *
  3.  * Copyright 2009 VMware, Inc.
  4.  * All Rights Reserved.
  5.  *
  6.  * Permission is hereby granted, free of charge, to any person obtaining a
  7.  * copy of this software and associated documentation files (the
  8.  * "Software"), to deal in the Software without restriction, including
  9.  * without limitation the rights to use, copy, modify, merge, publish,
  10.  * distribute, sub license, and/or sell copies of the Software, and to
  11.  * permit persons to whom the Software is furnished to do so, subject to
  12.  * the following conditions:
  13.  *
  14.  * The above copyright notice and this permission notice (including the
  15.  * next paragraph) shall be included in all copies or substantial portions
  16.  * of the Software.
  17.  *
  18.  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19.  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20.  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21.  * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
  22.  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23.  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24.  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25.  *
  26.  **************************************************************************/
  27.  
  28. /**
  29.  * @file
  30.  * Helper functions for type conversions.
  31.  *
  32.  * @author Jose Fonseca <jfonseca@vmware.com>
  33.  */
  34.  
  35.  
  36. #ifndef LP_BLD_STRUCT_H
  37. #define LP_BLD_STRUCT_H
  38.  
  39.  
  40. #include "gallivm/lp_bld.h"
  41. #include "gallivm/lp_bld_init.h"
  42.  
  43. #include "util/u_debug.h"
  44. #include "util/u_memory.h"
  45.  
  46.  
  47. #define LP_CHECK_STRUCT_SIZE(_ctype, _ltarget, _ltype) \
  48.       assert(LLVMABISizeOfType(_ltarget, _ltype) == \
  49.              sizeof(_ctype))
  50.  
  51. #define LP_CHECK_MEMBER_OFFSET(_ctype, _cmember, _ltarget, _ltype, _lindex) \
  52.       assert(LLVMOffsetOfElement(_ltarget, _ltype, _lindex) == \
  53.              offsetof(_ctype, _cmember))
  54.  
  55.  
  56. /**
  57.  * Get value pointer to a structure member.
  58.  */
  59. LLVMValueRef
  60. lp_build_struct_get_ptr(struct gallivm_state *gallivm,
  61.                         LLVMValueRef ptr,
  62.                         unsigned member,
  63.                         const char *name);
  64.  
  65. /**
  66.  * Get the value of a structure member.
  67.  */
  68. LLVMValueRef
  69. lp_build_struct_get(struct gallivm_state *gallivm,
  70.                     LLVMValueRef ptr,
  71.                     unsigned member,
  72.                     const char *name);
  73.  
  74. /**
  75.  * Get value pointer to an array element.
  76.  */
  77. LLVMValueRef
  78. lp_build_array_get_ptr(struct gallivm_state *gallivm,
  79.                        LLVMValueRef ptr,
  80.                        LLVMValueRef index);
  81.  
  82. /**
  83.  * Get the value of an array element.
  84.  */
  85. LLVMValueRef
  86. lp_build_array_get(struct gallivm_state *gallivm,
  87.                    LLVMValueRef ptr,
  88.                    LLVMValueRef index);
  89.  
  90. /**
  91.  * Set the value of an array element.
  92.  */
  93. void
  94. lp_build_array_set(struct gallivm_state *gallivm,
  95.                    LLVMValueRef ptr,
  96.                    LLVMValueRef index,
  97.                    LLVMValueRef value);
  98.  
  99. /**
  100.  * Get the value of an array element.
  101.  */
  102. LLVMValueRef
  103. lp_build_pointer_get(LLVMBuilderRef builder,
  104.                    LLVMValueRef ptr,
  105.                    LLVMValueRef index);
  106.  
  107. /**
  108.  * Get the value of an array element, with explicit alignment.
  109.  *
  110.  * If the element size is different from the alignment this will
  111.  * cause llvm to emit an unaligned load
  112.  */
  113. LLVMValueRef
  114. lp_build_pointer_get_unaligned(LLVMBuilderRef builder,
  115.                                LLVMValueRef ptr,
  116.                                LLVMValueRef index,
  117.                                unsigned alignment);
  118.  
  119. /**
  120.  * Set the value of an array element.
  121.  */
  122. void
  123. lp_build_pointer_set(LLVMBuilderRef builder,
  124.                      LLVMValueRef ptr,
  125.                      LLVMValueRef index,
  126.                      LLVMValueRef value);
  127.  
  128. /**
  129.  * Set the value of an array element, with explicit alignment.
  130.  *
  131.  * If the element size is different from the alignment this will
  132.  * cause llvm to emit an unaligned store
  133.  */
  134. void
  135. lp_build_pointer_set_unaligned(LLVMBuilderRef builder,
  136.                                LLVMValueRef ptr,
  137.                                LLVMValueRef index,
  138.                                LLVMValueRef value,
  139.                                unsigned alignment);
  140.  
  141. #endif /* !LP_BLD_STRUCT_H */
  142.