annotate src/nucleus/mbse.c @ 7:0f80e1e4dce4

src/nucleus: library C code import from FreeNucleus package
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 15 Jul 2018 20:57:33 +0000
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1 /*************************************************************************/
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2 /* */
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3 /* Copyright Mentor Graphics Corporation 2002 */
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4 /* All Rights Reserved. */
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5 /* */
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6 /* THIS WORK CONTAINS TRADE SECRET AND PROPRIETARY INFORMATION WHICH IS */
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7 /* THE PROPERTY OF MENTOR GRAPHICS CORPORATION OR ITS LICENSORS AND IS */
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8 /* SUBJECT TO LICENSE TERMS. */
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9 /* */
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10 /*************************************************************************/
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11
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12 /*************************************************************************/
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13 /* */
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14 /* FILE NAME VERSION */
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15 /* */
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16 /* mbse.c Nucleus PLUS 1.14 */
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17 /* */
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18 /* COMPONENT */
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19 /* */
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20 /* MB - Mailbox Management */
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21 /* */
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22 /* DESCRIPTION */
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23 /* */
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24 /* This file contains the error checking routines for the functions */
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25 /* in the Mailbox component. This permits easy removal of error */
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26 /* checking logic when it is not needed. */
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27 /* */
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28 /* DATA STRUCTURES */
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29 /* */
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30 /* None */
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31 /* */
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32 /* FUNCTIONS */
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33 /* */
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34 /* MBSE_Reset_Mailbox Reset a mailbox */
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35 /* MBSE_Receive_From_Mailbox Receive a mailbox message */
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36 /* */
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37 /* DEPENDENCIES */
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38 /* */
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39 /* cs_extr.h Common Service functions */
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40 /* tc_extr.h Thread Control functions */
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41 /* mb_extr.h Mailbox functions */
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42 /* */
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43 /* HISTORY */
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44 /* */
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45 /* DATE REMARKS */
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46 /* */
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47 /* 03-01-1994 Created initial version 1.1 from */
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48 /* routines originally in core */
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49 /* error checking file */
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50 /* */
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51 /* 03-18-1994 Verified version 1.1 */
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52 /* 04-17-1996 updated to version 1.2 */
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53 /* 03-24-1998 Released version 1.3 */
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54 /* 04-17-2002 Released version 1.13m */
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55 /* 11-07-2002 Released version 1.14 */
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56 /*************************************************************************/
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57 #define NU_SOURCE_FILE
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58
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59
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60 #include "cs_extr.h" /* Common service functions */
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61 #include "tc_extr.h" /* Thread control functions */
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62 #include "mb_extr.h" /* Mailbox functions */
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63
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66 /*************************************************************************/
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67 /* */
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68 /* FUNCTION */
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69 /* */
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70 /* MBSE_Reset_Mailbox */
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71 /* */
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72 /* DESCRIPTION */
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73 /* */
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74 /* This function performs error checking on the parameters supplied */
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75 /* to the actual reset mailbox function. */
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76 /* */
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77 /* CALLED BY */
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78 /* */
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79 /* Application */
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80 /* */
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81 /* CALLS */
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82 /* */
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83 /* MBS_Reset_Mailbox Actual reset mailbox function*/
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84 /* */
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85 /* INPUTS */
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86 /* */
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87 /* mailbox_ptr Mailbox control block pointer*/
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88 /* */
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89 /* OUTPUTS */
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90 /* */
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91 /* NU_INVALID_MAILBOX Invalid mailbox supplied */
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92 /* */
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93 /* HISTORY */
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94 /* */
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95 /* DATE REMARKS */
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96 /* */
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97 /* 03-01-1993 Created initial version 1.0 */
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98 /* 04-19-1993 Verified version 1.0 */
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99 /* 03-01-1994 Modified interface to exactly */
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100 /* match prototype, resulting in */
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101 /* version 1.1 */
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102 /* */
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103 /* 03-18-1994 Verified version 1.1 */
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104 /* */
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105 /*************************************************************************/
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106 STATUS MBSE_Reset_Mailbox(NU_MAILBOX *mailbox_ptr)
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107 {
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108
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109 MB_MCB *mailbox; /* Mailbox control block ptr */
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110 STATUS status; /* Completion status */
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111
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112
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113 /* Move input mailbox pointer into internal pointer. */
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114 mailbox = (MB_MCB *) mailbox_ptr;
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115
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116 /* Determine if the mailbox pointer is valid. */
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117 if ((mailbox) && (mailbox -> mb_id == MB_MAILBOX_ID))
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118
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119 /* Mailbox pointer is valid, call function to reset it. */
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120 status = MBS_Reset_Mailbox(mailbox_ptr);
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121
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122 else
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123
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124 /* Mailbox pointer is invalid, indicate in completion status. */
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125 status = NU_INVALID_MAILBOX;
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126
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127 /* Return completion status. */
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128 return(status);
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129 }
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130
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131
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132 /*************************************************************************/
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133 /* */
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134 /* FUNCTION */
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135 /* */
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136 /* MBSE_Broadcast_To_Mailbox */
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137 /* */
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138 /* DESCRIPTION */
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139 /* */
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140 /* This function performs error checking on the parameters supplied */
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141 /* to the mailbox broadcast function. */
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142 /* */
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143 /* CALLED BY */
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144 /* */
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145 /* Application */
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146 /* */
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147 /* CALLS */
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148 /* */
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149 /* MBS_Broadcast_To_Mailbox Actual broadcast mailbox func*/
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150 /* TCCE_Suspend_Error Check suspend validity */
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151 /* */
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152 /* INPUTS */
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153 /* */
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154 /* mailbox_ptr Mailbox control block pointer*/
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155 /* message Pointer to message to send */
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156 /* suspend Suspension option if full */
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157 /* */
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158 /* OUTPUTS */
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159 /* */
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160 /* NU_INVALID_MAILBOX Mailbox pointer is invalid */
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161 /* NU_INVALID_POINTER Message pointer is invalid */
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162 /* NU_INVALID_SUSPEND Invalid suspend request */
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163 /* */
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164 /* HISTORY */
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165 /* */
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166 /* DATE REMARKS */
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167 /* */
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168 /* 03-01-1993 Created initial version 1.0 */
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169 /* 04-19-1993 Verified version 1.0 */
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170 /* 03-01-1994 Modified interface to exactly */
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171 /* match prototype, resulting in */
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172 /* version 1.1 */
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173 /* */
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174 /* 03-18-1994 Verified version 1.1 */
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175 /* */
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176 /*************************************************************************/
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177 STATUS MBSE_Broadcast_To_Mailbox(NU_MAILBOX *mailbox_ptr, VOID *message,
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178 UNSIGNED suspend)
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179 {
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180
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181 MB_MCB *mailbox; /* Mailbox control block ptr */
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182 STATUS status; /* Completion status */
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183
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184
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185
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186 /* Move input mailbox pointer into internal pointer. */
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187 mailbox = (MB_MCB *) mailbox_ptr;
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188
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189 /* Determine if mailbox pointer is invalid. */
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190 if (mailbox == NU_NULL)
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191
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192 /* Mailbox pointer is invalid, indicate in completion status. */
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193 status = NU_INVALID_MAILBOX;
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194
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195 else if (mailbox -> mb_id != MB_MAILBOX_ID)
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196
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197 /* Mailbox pointer is invalid, indicate in completion status. */
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198 status = NU_INVALID_MAILBOX;
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199
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200 else if (message == NU_NULL)
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201
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202 /* Message pointer is invalid, indicate in completion status. */
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203 status = NU_INVALID_POINTER;
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204
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205 else if ((suspend) && (TCCE_Suspend_Error()))
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206
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207 /* Indicate that suspension is only valid from a task thread. */
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208 status = NU_INVALID_SUSPEND;
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209
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210 else
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211
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212 /* Parameters are valid, call actual function. */
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213 status = MBS_Broadcast_To_Mailbox(mailbox_ptr, message, suspend);
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214
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215 /* Return the completion status. */
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216 return(status);
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217 }
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218
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219
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220
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221
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222