FreeCalypso > hg > freecalypso-sw
annotate gsm-fw/nucleus/tcd.c @ 486:c8e12b7bbd0b
gsm-fw/gpf/conf/gpf_tst_drv.c: added
author | Michael Spacefalcon <msokolov@ivan.Harhan.ORG> |
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date | Sun, 29 Jun 2014 20:09:08 +0000 |
parents | ea819b60fe0d |
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rev | line source |
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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 /* tcd.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 /* TC - Thread Control */ |
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21 /* */ |
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22 /* DESCRIPTION */ |
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23 /* */ |
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24 /* This file contains global data structures for use within this */ |
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25 /* component. */ |
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26 /* */ |
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27 /* DATA STRUCTURES */ |
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28 /* */ |
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29 /* TCD_Created_Tasks_List Pointer to the linked-list */ |
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30 /* of created tasks */ |
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31 /* TCD_Total_Tasks Total number of created tasks*/ |
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32 /* TCD_Priority_List Array of pointers to ready */ |
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33 /* tasks, indexed by priority */ |
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34 /* TCD_Execute_Task Highest priority task to */ |
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35 /* execute */ |
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36 /* TCD_Priority_Groups Bit map of 32 groups of task */ |
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37 /* priority */ |
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38 /* TCD_Sub_Priority_Groups An array of 32 sub-priority */ |
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39 /* groups */ |
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40 /* TCD_Lowest_Set_Bit Lookup table to find the */ |
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41 /* lowest bit set in a byte */ |
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42 /* TCD_Highest_Priority Highest priority ready */ |
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43 /* TCD_Created_HISRs_List Pointer to the linked-list */ |
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44 /* of created HISRs */ |
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45 /* TCD_Total_HISRs Total number of created HISRs*/ |
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46 /* TCD_Active_HISR_Heads Active HISR list head ptrs */ |
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47 /* TCD_Active_HISR_Tails Active HISR list tail ptrs */ |
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48 /* TCD_Execute_HISR Highest priority HISR to */ |
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49 /* execute */ |
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50 /* TCD_Current_Thread Pointer to the currently */ |
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51 /* executing thread */ |
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52 /* TCD_Registered_LISRs List of registered LISRs */ |
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53 /* TCD_LISR_Pointers Actual LISR pointers */ |
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54 /* TCD_Interrupt_Count Count of ISRs in progress */ |
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55 /* TCD_Stack_Switched Flag indicating that stack */ |
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56 /* was switched in an ISR */ |
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57 /* TCD_List_Protect Task list protection */ |
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58 /* TCD_System_Protect System protection */ |
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59 /* TCD_System_Stack System stack pointer - top */ |
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60 /* TCD_LISR_Protect Protect LISR registration */ |
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61 /* TCD_HISR_Protect Protect the list of created */ |
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62 /* HISRs */ |
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63 /* TCD_Interrupt_Level Enable interrupt level */ |
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64 /* TCD_Unhandled_Interrupt Contains the most recent */ |
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65 /* unhandled interrupt in */ |
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66 /* system error conditions */ |
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67 /* */ |
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68 /* FUNCTIONS */ |
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69 /* */ |
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70 /* None */ |
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71 /* */ |
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72 /* DEPENDENCIES */ |
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73 /* */ |
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74 /* cs_defs.h Common Service constants */ |
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75 /* tc_defs.h Thread Control constants */ |
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76 /* */ |
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77 /* HISTORY */ |
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78 /* */ |
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79 /* DATE REMARKS */ |
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80 /* */ |
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81 /* 03-01-1993 Created initial version 1.0 */ |
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82 /* 04-19-1993 Verified version 1.0 */ |
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83 /* 01-01-1993 Added variable to save last */ |
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84 /* unhandled interrupt in system */ |
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85 /* error conditions, resulting in */ |
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86 /* version 1.0a */ |
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87 /* 11-01-1993 Verified version 1.0a */ |
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88 /* 03-01-1994 Change schedule protection to a */ |
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89 /* system protection to improve */ |
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90 /* performance, resulting in */ |
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91 /* version 1.1 */ |
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92 /* */ |
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93 /* 03-18-1994 Verified version 1.1 */ |
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94 /* 04-17-1996 updated to version 1.2 */ |
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95 /* 03-24-1998 Released version 1.3. */ |
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96 /* 03-26-1999 Released 1.11m (new release */ |
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97 /* numbering scheme) */ |
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98 /* 04-23-2001 Made TCD_LISR_Pointers array an exclusive count */ |
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99 /* 04-17-2002 Released version 1.13m */ |
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100 /* 11-07-2002 Released version 1.14 */ |
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101 /*************************************************************************/ |
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102 #define NU_SOURCE_FILE |
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103 |
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104 #include "cs_defs.h" /* Common Service constants */ |
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105 #include "tc_defs.h" /* Thread Control constants */ |
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106 |
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107 |
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108 /* TCD_Created_Tasks_List is the head pointer of the linked list of |
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109 created tasks. If the list is NU_NULL, there are no tasks created. */ |
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110 |
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111 CS_NODE *TCD_Created_Tasks_List; |
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112 |
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113 |
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114 /* TCD_Total_Tasks contains the number of currently created tasks. */ |
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115 |
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116 UNSIGNED TCD_Total_Tasks; |
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117 |
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118 |
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119 /* TCD_Priority_List is an array of TCB pointers. Each element of the array |
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120 is effectively the head pointer of the list of tasks ready for execution |
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121 at that priority. If the pointer is NULL, there are no tasks ready |
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122 for execution at that priority. The array is indexed by priority. */ |
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123 |
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124 TC_TCB *TCD_Priority_List[TC_PRIORITIES]; |
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125 |
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126 |
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127 /* TCD_Priority_Groups is a 32-bit unsigned integer that is used as a bit |
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128 map. Each bit corresponds to an 8-priority group. For example, if bit 0 |
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129 is set, at least one task of priority 0 through 8 is ready for execution. */ |
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130 |
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131 UNSIGNED TCD_Priority_Groups; |
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132 |
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133 |
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134 /* TCD_Sub_Priority_Groups is an array of sub-priority groups. These are |
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135 also used as bit maps. Index 0 of this array corresponds to priorities |
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136 0 through 8. Bit 0 of this element represents priority 0, while bit 7 |
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137 represents priority 7. */ |
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138 |
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139 DATA_ELEMENT TCD_Sub_Priority_Groups[TC_MAX_GROUPS]; |
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140 |
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141 |
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142 /* TCD_Lowest_Set_Bit is nothing more than a standard lookup table. The |
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143 table is indexed by values ranging from 1 to 255. The value at that |
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144 position in the table indicates the number of the lowest set bit. This is |
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145 used to determine the highest priority task represented in the previously |
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146 defined bit maps. */ |
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147 |
144
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148 const UNSIGNED_CHAR TCD_Lowest_Set_Bit[] = {0, |
79
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149 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0, 4, 0, 1, 0, 2, 0, 1, 0, 3, 0, |
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150 1, 0, 2, 0, 1, 0, 5, 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0, 4, 0, 1, |
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151 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0, 6, 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, |
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152 2, 0, 1, 0, 4, 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0, 5, 0, 1, 0, 2, |
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153 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0, 4, 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, 0, |
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154 1, 0, 7, 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0, 4, 0, 1, 0, 2, 0, 1, |
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155 0, 3, 0, 1, 0, 2, 0, 1, 0, 5, 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0, |
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156 4, 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0, 6, 0, 1, 0, 2, 0, 1, 0, 3, |
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157 0, 1, 0, 2, 0, 1, 0, 4, 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0, 5, 0, |
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158 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0, 4, 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, |
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159 0, 2, 0, 1, 0}; |
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160 |
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161 |
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162 /* TCD_Highest_Priority contains the highest priority task ready for execution. |
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163 Note that this does not necessarily represent the priority of the currently |
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164 executing task. This is true if the currently executing task has preemption |
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165 disabled. If no tasks are executing, this variable is set to the maximum |
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166 priority. */ |
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167 |
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168 INT TCD_Highest_Priority; |
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169 |
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170 |
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171 /* TCD_Execute_Task is a pointer to the task to execute. Note that this |
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172 pointer does not necessarily point to the currently executing task. There |
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173 are several points in the system where this is true. One situation is |
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174 when preemption is about to take place. Another situation can result from |
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175 a internal protection conflict. */ |
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176 |
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177 TC_TCB *TCD_Execute_Task; |
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178 |
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179 |
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180 /* TCD_Created_HISRs_List is the head pointer of the list of created High- |
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181 Level Interrupt Service Routines (HISR). If this pointer is NU_NULL, there |
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182 are no HISRs currently created. */ |
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183 |
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184 CS_NODE *TCD_Created_HISRs_List; |
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185 |
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186 |
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187 /* TCD_Total_HISRs contains the number of currently created HISRs. */ |
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188 |
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189 UNSIGNED TCD_Total_HISRs; |
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190 |
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191 |
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192 /* TCD_Active_HISR_Heads is an array of active HISR list head pointers. |
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193 There are three HISR priorities available. The HISR priority is an index |
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194 into this table. Priority/index 0 represents the highest priority. */ |
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195 |
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196 TC_HCB *TCD_Active_HISR_Heads[TC_HISR_PRIORITIES]; |
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197 |
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198 |
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199 /* TCD_Active_HISR_Tails is an array of active HISR list tail pointers. |
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200 There are three HISR priorities available. The HISR priority is an index |
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201 into this table. Priority/index 0 represents the highest priority. */ |
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202 |
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203 TC_HCB *TCD_Active_HISR_Tails[TC_HISR_PRIORITIES]; |
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204 |
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205 |
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206 /* TCD_Execute_HISR contains a pointer to the highest priority HISR to execute. |
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207 If this pointer is NU_NULL, no HISRs are currently activated. Note that |
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208 the current thread pointer is not always equal to this pointer. */ |
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209 |
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210 TC_HCB *TCD_Execute_HISR; |
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211 |
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212 |
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213 /* TCD_Current_Thread points to the control block of the currently executing |
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214 thread of execution. Therefore, this variable points at either a TC_TCB |
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215 or a TC_HCB structure. Except for initialization, this variable is set |
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216 and cleared in the target dependent portion of this component. */ |
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217 |
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218 VOID *TCD_Current_Thread; |
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219 |
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220 |
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221 /* TCD_System_Stack contains the system stack base pointer. When the system |
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222 is idle or in interrupt processing the system stack pointer is used. This |
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223 variable is usually setup during target dependent initialization. */ |
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224 |
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225 VOID *TCD_System_Stack; |
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226 |
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227 |
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228 #if 0 |
79
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229 /* TCD_Registered_LISRs is a list that specifies whether or not a |
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230 LISR is registered for a given interrupt vector. If the value in the |
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231 list indexed by the vector is non-zero, then that value can be used |
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232 as the index into the list of LISR pointers to find the actual registered |
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233 LISR. */ |
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234 |
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235 UNSIGNED_CHAR TCD_Registered_LISRs[NU_MAX_VECTORS+1]; |
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236 |
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237 |
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238 /* TCD_LISR_Pointers is a list of LISR pointers that indicate the LISR function |
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239 to call when the interrupt occurs. If the entry is NULL, it is |
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240 available. */ |
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241 |
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242 VOID (*TCD_LISR_Pointers[NU_MAX_LISRS+1])(INT vector); |
144
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243 #endif |
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244 |
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245 |
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246 /* TCD_Interrupt_Count contains the number of Interrupt Service Routines (ISRs) |
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247 currently in progress. If the contents of this variable is zero, then no |
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248 interrupts are in progress. If the contents are greater than 1, nested |
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249 interrupts are being processed. */ |
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250 |
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251 INT TCD_Interrupt_Count; |
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252 |
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253 |
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254 /* TCD_Stack_Switched contains a flag indicating that the system stack was |
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255 switched to after the thread's context was saved. This variable is not |
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256 used in all ports. */ |
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257 |
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258 INT TCD_Stack_Switched; |
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259 |
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260 |
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261 /* TCD_List_Protect is a structure that is used to protect against multiple |
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262 access to the list of established tasks. */ |
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263 |
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264 TC_PROTECT TCD_List_Protect; |
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265 |
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266 |
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267 /* TCD_System_Protect is a structure that is used to provide protection |
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268 against multiple threads accessing the same system structures at the |
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269 same time. */ |
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270 |
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271 TC_PROTECT TCD_System_Protect; |
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272 |
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273 |
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274 #if 0 |
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275 /* TCD_LISR_Protect is a structure that is used to provide protection against |
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276 multiple threads accessing the LISR registration structures at the same |
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277 time. */ |
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278 |
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279 TC_PROTECT TCD_LISR_Protect; |
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280 #endif |
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281 |
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282 |
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283 /* TCD_HISR_Protect is a structure that is used to provide protection against |
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284 multiple threads accessing the created HISR linked-list at the same time. */ |
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285 |
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286 TC_PROTECT TCD_HISR_Protect; |
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287 |
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288 |
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289 /* TCD_Interrupt_Level is a variable that contains the enabled interrupt |
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290 level. If the target processor does not have multiple enable interrupt |
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291 levels, this variable is a boolean. */ |
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292 |
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293 INT TCD_Interrupt_Level; |
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294 |
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295 |
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296 /* TCD_Unhandled_Interrupt is a variable that contains the last unhandled |
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297 interrupt in system error conditions. */ |
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298 |
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299 INT TCD_Unhandled_Interrupt; |