1 | /* |
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2 | * SPDX-License-Identifier: BSD-2-Clause |
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3 | * |
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4 | * Copyright (C) 2019 embedded brains GmbH |
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5 | * |
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6 | * Redistribution and use in source and binary forms, with or without |
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7 | * modification, are permitted provided that the following conditions |
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8 | * are met: |
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9 | * 1. Redistributions of source code must retain the above copyright |
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10 | * notice, this list of conditions and the following disclaimer. |
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11 | * 2. Redistributions in binary form must reproduce the above copyright |
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12 | * notice, this list of conditions and the following disclaimer in the |
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13 | * documentation and/or other materials provided with the distribution. |
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14 | * |
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15 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
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16 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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17 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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18 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
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19 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
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20 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
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21 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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22 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
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23 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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24 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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25 | * POSSIBILITY OF SUCH DAMAGE. |
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26 | */ |
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27 | |
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28 | #include <rtems/score/smpimpl.h> |
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29 | #include <rtems/score/atomic.h> |
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30 | #include <rtems/score/threaddispatch.h> |
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31 | #include <rtems/sysinit.h> |
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32 | #include <rtems.h> |
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33 | |
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34 | #include <string.h> |
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35 | |
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36 | #include <t.h> |
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37 | #include <tmacros.h> |
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38 | |
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39 | #define CPU_COUNT 32 |
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40 | |
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41 | const char rtems_test_name[] = "SMPMULTICAST 1"; |
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42 | |
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43 | static const T_config config = { |
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44 | .name = "SMPMultiCast", |
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45 | .putchar = T_putchar_default, |
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46 | .verbosity = T_VERBOSE, |
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47 | .now = T_now |
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48 | }; |
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49 | |
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50 | typedef struct { |
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51 | Atomic_Uint id[CPU_COUNT]; |
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52 | } test_context; |
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53 | |
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54 | static test_context test_instance; |
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55 | |
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56 | static void multicast_action_irq_disabled( |
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57 | const Processor_mask *targets, |
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58 | SMP_Action_handler handler, |
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59 | void *arg |
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60 | ) |
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61 | { |
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62 | rtems_interrupt_level level; |
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63 | |
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64 | rtems_interrupt_local_disable(level); |
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65 | _SMP_Multicast_action(targets, handler, arg); |
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66 | rtems_interrupt_local_enable(level); |
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67 | } |
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68 | |
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69 | static void multicast_action_dispatch_disabled( |
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70 | const Processor_mask *targets, |
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71 | SMP_Action_handler handler, |
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72 | void *arg |
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73 | ) |
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74 | { |
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75 | Per_CPU_Control *cpu_self; |
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76 | |
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77 | cpu_self = _Thread_Dispatch_disable(); |
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78 | _SMP_Multicast_action(targets, handler, arg); |
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79 | _Thread_Dispatch_enable(cpu_self); |
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80 | } |
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81 | |
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82 | static void action(void *arg) |
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83 | { |
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84 | test_context *ctx; |
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85 | uint32_t self; |
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86 | unsigned expected; |
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87 | bool success; |
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88 | |
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89 | ctx = arg; |
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90 | self = rtems_scheduler_get_processor(); |
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91 | expected = 0; |
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92 | success = _Atomic_Compare_exchange_uint( |
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93 | &ctx->id[self], |
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94 | &expected, |
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95 | self + 1, |
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96 | ATOMIC_ORDER_RELAXED, |
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97 | ATOMIC_ORDER_RELAXED |
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98 | ); |
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99 | T_quiet_true(success, "set CPU identifier failed"); |
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100 | } |
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101 | |
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102 | static void test_unicast( |
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103 | test_context *ctx, |
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104 | void (*multicast_action)(const Processor_mask *, SMP_Action_handler, void *), |
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105 | bool before_multitasking |
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106 | ) |
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107 | { |
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108 | uint32_t step; |
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109 | uint32_t i; |
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110 | uint32_t n; |
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111 | uint32_t self; |
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112 | |
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113 | T_plan(1); |
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114 | step = 0; |
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115 | self = rtems_scheduler_get_processor(); |
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116 | n = rtems_scheduler_get_processor_maximum(); |
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117 | |
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118 | for (i = 0; i < n; ++i) { |
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119 | Processor_mask cpus; |
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120 | uint32_t j; |
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121 | |
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122 | memset(ctx, 0, sizeof(*ctx)); |
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123 | |
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124 | _Processor_mask_Zero(&cpus); |
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125 | _Processor_mask_Set(&cpus, i); |
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126 | (*multicast_action)(&cpus, action, ctx); |
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127 | |
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128 | for (j = 0; j < n; ++j) { |
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129 | unsigned id; |
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130 | |
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131 | ++step; |
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132 | id = _Atomic_Load_uint(&ctx->id[j], ATOMIC_ORDER_RELAXED); |
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133 | |
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134 | if (before_multitasking) { |
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135 | if (j == self) { |
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136 | T_quiet_eq_uint(j + 1, id); |
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137 | } else { |
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138 | T_quiet_eq_uint(0, id); |
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139 | } |
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140 | } else { |
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141 | if (j == i) { |
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142 | T_quiet_eq_uint(j + 1, id); |
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143 | } else { |
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144 | T_quiet_eq_uint(0, id); |
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145 | } |
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146 | } |
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147 | } |
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148 | } |
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149 | |
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150 | T_step_eq_u32(0, step, n * n); |
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151 | } |
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152 | |
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153 | static void test_broadcast( |
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154 | test_context *ctx, |
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155 | void (*multicast_action)(const Processor_mask *, SMP_Action_handler, void *), |
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156 | bool before_multitasking |
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157 | ) |
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158 | { |
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159 | uint32_t step; |
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160 | uint32_t i; |
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161 | uint32_t n; |
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162 | uint32_t self; |
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163 | |
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164 | T_plan(1); |
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165 | step = 0; |
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166 | self = rtems_scheduler_get_processor(); |
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167 | n = rtems_scheduler_get_processor_maximum(); |
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168 | |
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169 | for (i = 0; i < n; ++i) { |
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170 | uint32_t j; |
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171 | |
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172 | memset(ctx, 0, sizeof(*ctx)); |
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173 | |
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174 | (*multicast_action)(NULL, action, ctx); |
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175 | |
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176 | for (j = 0; j < n; ++j) { |
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177 | unsigned id; |
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178 | |
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179 | ++step; |
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180 | id = _Atomic_Load_uint(&ctx->id[j], ATOMIC_ORDER_RELAXED); |
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181 | |
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182 | if (before_multitasking) { |
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183 | if (j == self) { |
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184 | T_quiet_eq_uint(j + 1, id); |
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185 | } else { |
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186 | T_quiet_eq_uint(0, id); |
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187 | } |
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188 | } else { |
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189 | T_quiet_eq_uint(j + 1, id); |
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190 | } |
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191 | } |
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192 | } |
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193 | |
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194 | T_step_eq_u32(0, step, n * n); |
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195 | } |
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196 | |
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197 | static void test_before_multitasking(void) |
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198 | { |
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199 | test_context *ctx; |
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200 | |
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201 | ctx = &test_instance; |
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202 | |
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203 | T_case_begin("UnicastBeforeMultitasking", NULL); |
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204 | test_unicast(ctx, _SMP_Multicast_action, true); |
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205 | T_case_end(); |
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206 | |
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207 | T_case_begin("UnicastBeforeMultitaskingIRQDisabled", NULL); |
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208 | test_unicast(ctx, multicast_action_irq_disabled, true); |
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209 | T_case_end(); |
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210 | |
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211 | T_case_begin("UnicastBeforeMultitaskingDispatchDisabled", NULL); |
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212 | test_unicast(ctx, multicast_action_dispatch_disabled, true); |
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213 | T_case_end(); |
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214 | |
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215 | T_case_begin("BroadcastBeforeMultitasking", NULL); |
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216 | test_broadcast(ctx, _SMP_Multicast_action, true); |
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217 | T_case_end(); |
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218 | |
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219 | T_case_begin("BroadcastBeforeMultitaskingIRQDisabled", NULL); |
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220 | test_broadcast(ctx, multicast_action_irq_disabled, true); |
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221 | T_case_end(); |
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222 | |
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223 | T_case_begin("BroadcastBeforeMultitaskingDispatchDisabled", NULL); |
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224 | test_broadcast(ctx, multicast_action_dispatch_disabled, true); |
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225 | T_case_end(); |
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226 | } |
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227 | |
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228 | static void after_drivers(void) |
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229 | { |
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230 | TEST_BEGIN(); |
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231 | T_run_initialize(&config); |
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232 | test_before_multitasking(); |
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233 | } |
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234 | |
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235 | RTEMS_SYSINIT_ITEM( |
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236 | after_drivers, |
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237 | RTEMS_SYSINIT_DEVICE_DRIVERS, |
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238 | RTEMS_SYSINIT_ORDER_LAST |
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239 | ); |
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240 | |
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241 | static void Init(rtems_task_argument arg) |
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242 | { |
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243 | test_context *ctx; |
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244 | bool ok; |
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245 | |
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246 | ctx = &test_instance; |
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247 | |
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248 | T_case_begin("UnicastDuringMultitasking", NULL); |
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249 | test_unicast(ctx, _SMP_Multicast_action, false); |
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250 | T_case_end(); |
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251 | |
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252 | T_case_begin("UnicastDuringMultitaskingIRQDisabled", NULL); |
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253 | test_unicast(ctx, multicast_action_irq_disabled, false); |
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254 | T_case_end(); |
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255 | |
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256 | T_case_begin("UnicastDuringMultitaskingDispatchDisabled", NULL); |
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257 | test_unicast(ctx, multicast_action_dispatch_disabled, false); |
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258 | T_case_end(); |
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259 | |
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260 | T_case_begin("BroadcastDuringMultitasking", NULL); |
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261 | test_broadcast(ctx, _SMP_Multicast_action, false); |
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262 | T_case_end(); |
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263 | |
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264 | T_case_begin("BroadcastDuringMultitaskingIRQDisabled", NULL); |
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265 | test_broadcast(ctx, multicast_action_irq_disabled, false); |
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266 | T_case_end(); |
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267 | |
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268 | T_case_begin("BroadcastDuringMultitaskingDispatchDisabled", NULL); |
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269 | test_broadcast(ctx, multicast_action_dispatch_disabled, false); |
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270 | T_case_end(); |
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271 | |
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272 | ok = T_run_finalize(); |
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273 | rtems_test_assert(ok); |
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274 | TEST_END(); |
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275 | rtems_test_exit(0); |
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276 | } |
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277 | |
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278 | #define CONFIGURE_APPLICATION_NEEDS_CLOCK_DRIVER |
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279 | |
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280 | #define CONFIGURE_MAXIMUM_TASKS 1 |
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281 | |
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282 | #define CONFIGURE_MAXIMUM_PROCESSORS CPU_COUNT |
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283 | |
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284 | #define CONFIGURE_RTEMS_INIT_TASKS_TABLE |
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285 | |
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286 | #define CONFIGURE_INIT |
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287 | |
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288 | #include <rtems/confdefs.h> |
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