1 | /** |
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2 | * @file |
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3 | * |
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4 | * @brief Atomic Operations CPU API |
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5 | */ |
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6 | |
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7 | /* |
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8 | * COPYRIGHT (c) 2013 Deng Hengyi. |
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9 | * |
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10 | * The license and distribution terms for this file may be |
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11 | * found in the file LICENSE in this distribution or at |
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12 | * http://www.rtems.org/license/LICENSE. |
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13 | */ |
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14 | |
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15 | #ifndef _RTEMS_SCORE_CPUSTDATOMIC_H |
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16 | #define _RTEMS_SCORE_CPUSTDATOMIC_H |
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17 | |
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18 | #include <stdint.h> |
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19 | |
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20 | #if defined(__cplusplus) && __GNUC__ >= 4 && __GNUC_MINOR__ >= 9 |
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21 | |
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22 | /* |
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23 | * The GCC 4.9 ships its own <stdatomic.h> which is not C++ compatible. The |
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24 | * suggested solution was to include <atomic> in case C++ is used. This works |
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25 | * at least with GCC 4.9. See also: |
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26 | * |
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27 | * http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60932 |
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28 | * http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60940 |
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29 | */ |
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30 | |
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31 | #include <atomic> |
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32 | |
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33 | typedef std::atomic_uint CPU_atomic_Uint; |
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34 | |
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35 | typedef std::atomic_ulong CPU_atomic_Ulong; |
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36 | |
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37 | typedef std::atomic_uintptr_t CPU_atomic_Pointer; |
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38 | |
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39 | typedef std::atomic_flag CPU_atomic_Flag; |
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40 | |
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41 | #define CPU_ATOMIC_ORDER_RELAXED std::memory_order_relaxed |
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42 | |
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43 | #define CPU_ATOMIC_ORDER_ACQUIRE std::memory_order_acquire |
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44 | |
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45 | #define CPU_ATOMIC_ORDER_RELEASE std::memory_order_release |
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46 | |
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47 | #define CPU_ATOMIC_ORDER_SEQ_CST std::memory_order_seq_cst |
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48 | |
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49 | #define CPU_ATOMIC_INITIALIZER_UINT( value ) ATOMIC_VAR_INIT( value ) |
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50 | |
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51 | #define CPU_ATOMIC_INITIALIZER_ULONG( value ) ATOMIC_VAR_INIT( value ) |
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52 | |
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53 | #define CPU_ATOMIC_INITIALIZER_PTR( value ) \ |
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54 | ATOMIC_VAR_INIT( (uintptr_t) (value) ) |
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55 | |
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56 | #define CPU_ATOMIC_INITIALIZER_FLAG ATOMIC_FLAG_INIT |
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57 | |
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58 | #define _CPU_atomic_Fence( order ) atomic_thread_fence( order ) |
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59 | |
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60 | #define _CPU_atomic_Init_uint( obj, desired ) \ |
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61 | (obj)->store( desired ) |
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62 | |
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63 | #define _CPU_atomic_Init_ulong( obj, desired ) \ |
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64 | (obj)->store( desired ) |
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65 | |
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66 | #define _CPU_atomic_Init_ptr( obj, desired ) \ |
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67 | (obj)->store( desired ) |
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68 | |
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69 | #define _CPU_atomic_Load_uint( obj, order ) \ |
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70 | (obj)->load( order ) |
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71 | |
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72 | #define _CPU_atomic_Load_ulong( obj, order ) \ |
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73 | (obj)->load( order ) |
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74 | |
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75 | #define _CPU_atomic_Load_ptr( obj, order ) \ |
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76 | (void *) (obj)->load( order ) |
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77 | |
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78 | #define _CPU_atomic_Store_uint( obj, desr, order ) \ |
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79 | (obj)->store( desr, order ) |
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80 | |
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81 | #define _CPU_atomic_Store_ulong( obj, desr, order ) \ |
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82 | (obj)->store( desr, order ) |
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83 | |
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84 | #define _CPU_atomic_Store_ptr( obj, desr, order ) \ |
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85 | (obj)->store( (uintptr_t) desr, order ) |
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86 | |
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87 | #define _CPU_atomic_Fetch_add_uint( obj, arg, order ) \ |
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88 | (obj)->fetch_add( arg, order ) |
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89 | |
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90 | #define _CPU_atomic_Fetch_add_ulong( obj, arg, order ) \ |
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91 | (obj)->fetch_add( arg, order ) |
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92 | |
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93 | #define _CPU_atomic_Fetch_add_ptr( obj, arg, order ) \ |
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94 | (obj)->fetch_add( arg, (uintptr_t) order ) |
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95 | |
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96 | #define _CPU_atomic_Fetch_sub_uint( obj, arg, order ) \ |
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97 | (obj)->fetch_sub( arg, order ) |
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98 | |
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99 | #define _CPU_atomic_Fetch_sub_ulong( obj, arg, order ) \ |
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100 | (obj)->fetch_sub( arg, order ) |
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101 | |
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102 | #define _CPU_atomic_Fetch_sub_ptr( obj, arg, order ) \ |
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103 | (obj)->fetch_sub( arg, (uintptr_t) order ) |
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104 | |
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105 | #define _CPU_atomic_Fetch_or_uint( obj, arg, order ) \ |
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106 | (obj)->fetch_or( arg, order ) |
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107 | |
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108 | #define _CPU_atomic_Fetch_or_ulong( obj, arg, order ) \ |
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109 | (obj)->fetch_or( arg, order ) |
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110 | |
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111 | #define _CPU_atomic_Fetch_or_ptr( obj, arg, order ) \ |
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112 | (obj)->fetch_or( arg, (uintptr_t) order ) |
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113 | |
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114 | #define _CPU_atomic_Fetch_and_uint( obj, arg, order ) \ |
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115 | (obj)->fetch_and( arg, order ) |
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116 | |
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117 | #define _CPU_atomic_Fetch_and_ulong( obj, arg, order ) \ |
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118 | (obj)->fetch_and( arg, order ) |
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119 | |
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120 | #define _CPU_atomic_Fetch_and_ptr( obj, arg, order ) \ |
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121 | (obj)->fetch_and( arg, (uintptr_t) order ) |
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122 | |
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123 | #define _CPU_atomic_Exchange_uint( obj, desr, order ) \ |
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124 | (obj)->exchange( desr, order ) |
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125 | |
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126 | #define _CPU_atomic_Exchange_ulong( obj, desr, order ) \ |
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127 | (obj)->exchange( desr, order ) |
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128 | |
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129 | #define _CPU_atomic_Exchange_ptr( obj, desr, order ) \ |
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130 | (void *) (obj)->exchange( desr, (uintptr_t) order ) |
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131 | |
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132 | #define _CPU_atomic_Compare_exchange_uint( obj, expected, desired, succ, fail ) \ |
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133 | (obj)->compare_exchange_strong( expected, desired, succ, fail ) |
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134 | |
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135 | #define _CPU_atomic_Compare_exchange_ulong( obj, expected, desired, succ, fail ) \ |
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136 | (obj)->compare_exchange_strong( expected, desired, succ, fail ) |
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137 | |
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138 | #define _CPU_atomic_Compare_exchange_ptr( obj, expected, desired, succ, fail ) \ |
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139 | (obj)->compare_exchange_strong( (void **) expected, (uintptr_t) desired, succ, fail ) |
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140 | |
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141 | #define _CPU_atomic_Flag_clear( obj, order ) \ |
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142 | (obj)->clear( order ) |
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143 | |
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144 | #define _CPU_atomic_Flag_test_and_set( obj, order ) \ |
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145 | (obj)->test_and_set( order ) |
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146 | |
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147 | #else /* __cplusplus */ |
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148 | |
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149 | #include <stdatomic.h> |
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150 | |
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151 | typedef atomic_uint CPU_atomic_Uint; |
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152 | |
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153 | typedef atomic_ulong CPU_atomic_Ulong; |
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154 | |
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155 | typedef atomic_uintptr_t CPU_atomic_Pointer; |
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156 | |
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157 | typedef atomic_flag CPU_atomic_Flag; |
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158 | |
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159 | #define CPU_ATOMIC_ORDER_RELAXED memory_order_relaxed |
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160 | |
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161 | #define CPU_ATOMIC_ORDER_ACQUIRE memory_order_acquire |
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162 | |
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163 | #define CPU_ATOMIC_ORDER_RELEASE memory_order_release |
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164 | |
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165 | #define CPU_ATOMIC_ORDER_SEQ_CST memory_order_seq_cst |
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166 | |
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167 | #define CPU_ATOMIC_INITIALIZER_UINT( value ) ATOMIC_VAR_INIT( value ) |
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168 | |
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169 | #define CPU_ATOMIC_INITIALIZER_ULONG( value ) ATOMIC_VAR_INIT( value ) |
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170 | |
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171 | #define CPU_ATOMIC_INITIALIZER_PTR( value ) \ |
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172 | ATOMIC_VAR_INIT( (uintptr_t) (value) ) |
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173 | |
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174 | #define CPU_ATOMIC_INITIALIZER_FLAG ATOMIC_FLAG_INIT |
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175 | |
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176 | #define _CPU_atomic_Fence( order ) atomic_thread_fence( order ) |
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177 | |
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178 | #define _CPU_atomic_Init_uint( obj, desired ) \ |
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179 | atomic_init( obj, desired ) |
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180 | |
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181 | #define _CPU_atomic_Init_ulong( obj, desired ) \ |
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182 | atomic_init( obj, desired ) |
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183 | |
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184 | #define _CPU_atomic_Init_ptr( obj, desired ) \ |
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185 | atomic_init( obj, (uintptr_t) desired ) |
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186 | |
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187 | #define _CPU_atomic_Load_uint( obj, order ) \ |
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188 | atomic_load_explicit( obj, order ) |
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189 | |
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190 | #define _CPU_atomic_Load_ulong( obj, order ) \ |
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191 | atomic_load_explicit( obj, order ) |
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192 | |
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193 | #define _CPU_atomic_Load_ptr( obj, order ) \ |
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194 | (void *) atomic_load_explicit( obj, order ) |
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195 | |
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196 | #define _CPU_atomic_Store_uint( obj, desr, order ) \ |
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197 | atomic_store_explicit( obj, desr, order ) |
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198 | |
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199 | #define _CPU_atomic_Store_ulong( obj, desr, order ) \ |
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200 | atomic_store_explicit( obj, desr, order ) |
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201 | |
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202 | #define _CPU_atomic_Store_ptr( obj, desr, order ) \ |
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203 | atomic_store_explicit( obj, desr, order ) |
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204 | |
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205 | #define _CPU_atomic_Fetch_add_uint( obj, arg, order ) \ |
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206 | atomic_fetch_add_explicit( obj, arg, order ) |
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207 | |
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208 | #define _CPU_atomic_Fetch_add_ulong( obj, arg, order ) \ |
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209 | atomic_fetch_add_explicit( obj, arg, order ) |
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210 | |
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211 | #define _CPU_atomic_Fetch_add_ptr( obj, arg, order ) \ |
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212 | atomic_fetch_add_explicit( obj, arg, order ) |
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213 | |
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214 | #define _CPU_atomic_Fetch_sub_uint( obj, arg, order ) \ |
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215 | atomic_fetch_sub_explicit( obj, arg, order ) |
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216 | |
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217 | #define _CPU_atomic_Fetch_sub_ulong( obj, arg, order ) \ |
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218 | atomic_fetch_sub_explicit( obj, arg, order ) |
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219 | |
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220 | #define _CPU_atomic_Fetch_sub_ptr( obj, arg, order ) \ |
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221 | atomic_fetch_sub_explicit( obj, arg, order ) |
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222 | |
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223 | #define _CPU_atomic_Fetch_or_uint( obj, arg, order ) \ |
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224 | atomic_fetch_or_explicit( obj, arg, order ) |
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225 | |
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226 | #define _CPU_atomic_Fetch_or_ulong( obj, arg, order ) \ |
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227 | atomic_fetch_or_explicit( obj, arg, order ) |
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228 | |
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229 | #define _CPU_atomic_Fetch_or_ptr( obj, arg, order ) \ |
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230 | atomic_fetch_or_explicit( obj, arg, order ) |
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231 | |
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232 | #define _CPU_atomic_Fetch_and_uint( obj, arg, order ) \ |
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233 | atomic_fetch_and_explicit( obj, arg, order ) |
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234 | |
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235 | #define _CPU_atomic_Fetch_and_ulong( obj, arg, order ) \ |
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236 | atomic_fetch_and_explicit( obj, arg, order ) |
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237 | |
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238 | #define _CPU_atomic_Fetch_and_ptr( obj, arg, order ) \ |
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239 | atomic_fetch_and_explicit( obj, arg, order ) |
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240 | |
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241 | #define _CPU_atomic_Exchange_uint( obj, desr, order ) \ |
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242 | atomic_exchange_explicit( obj, desr, order ) |
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243 | |
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244 | #define _CPU_atomic_Exchange_ulong( obj, desr, order ) \ |
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245 | atomic_exchange_explicit( obj, desr, order ) |
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246 | |
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247 | #define _CPU_atomic_Exchange_ptr( obj, desr, order ) \ |
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248 | atomic_exchange_explicit( obj, desr, order ) |
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249 | |
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250 | #define _CPU_atomic_Compare_exchange_uint( obj, expected, desired, succ, fail ) \ |
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251 | atomic_compare_exchange_strong_explicit( obj, expected, desired, succ, fail ) |
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252 | |
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253 | #define _CPU_atomic_Compare_exchange_ulong( obj, expected, desired, succ, fail ) \ |
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254 | atomic_compare_exchange_strong_explicit( obj, expected, desired, succ, fail ) |
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255 | |
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256 | #define _CPU_atomic_Compare_exchange_ptr( obj, expected, desired, succ, fail ) \ |
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257 | atomic_compare_exchange_strong_explicit( obj, expected, desired, succ, fail ) |
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258 | |
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259 | #define _CPU_atomic_Flag_clear( obj, order ) \ |
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260 | atomic_flag_clear_explicit( obj, order ) |
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261 | |
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262 | #define _CPU_atomic_Flag_test_and_set( obj, order ) \ |
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263 | atomic_flag_test_and_set_explicit( obj, order ) |
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264 | |
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265 | #endif /* __cplusplus */ |
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266 | |
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267 | #endif /* _RTEMS_SCORE_CPUSTDATOMIC_H */ |
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