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annotate src/nucleus/tc_defs.h @ 5:3b367f330821

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components: pruned import from Selenite
author Mychaela Falconia <falcon@freecalypso.org>
date Fri, 15 May 2020 02:20:23 +0000
parents 92470e5d0b9e
children
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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 /* tc_defs.h 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 data structure definitions and constants for */
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25 /* the component that controls the various threads of execution in */
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26 /* system. Threads include tasks, HISRs, signal handlers, etc. */
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27 /* */
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28 /* DATA STRUCTURES */
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29 /* */
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30 /* TC_TCB Task Control Block */
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31 /* TC_HCB HISR Control Block */
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32 /* TC_PROTECT Task/HISR protection struct */
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33 /* */
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34 /* FUNCTIONS */
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35 /* */
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36 /* None */
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37 /* */
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38 /* DEPENDENCIES */
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39 /* */
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40 /* cs_defs.h Common service definitions */
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41 /* tm_defs.h Timer control definitions */
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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 /* 03-01-1993 Created initial version 1.0 */
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48 /* 04-19-1993 Verified version 1.0 */
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49 /* 06-01-1993 Added padding conditional into */
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50 /* TC_TCB structure, making */
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51 /* version 1.0a */
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52 /* 06-01-1993 Verified version 1.0a */
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53 /* 03-01-1994 Moved include files outside of */
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54 /* the file #ifndef to allow the */
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55 /* use of actual data structures, */
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56 /* added four reserved words in */
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57 /* both the task and HISR blocks, */
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58 /* resulting in version 1.1 */
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59 /* */
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60 /* 03-18-1994 Verified version 1.1 */
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61 /* 04-17-1996 updated to version 1.2 */
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62 /* 03-24-1998 Released version 1.3 */
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63 /* 03-26-1999 Released 1.11m (new release */
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64 /* numbering scheme) */
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65 /* 04-07-1999 Release 1.11mA */
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66 /* 04-17-2002 Released version 1.13m */
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67 /* 11-07-2002 Released version 1.14 */
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68 /*************************************************************************/
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69
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70 #include "cs_defs.h" /* Common service constants */
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71 #include "tm_defs.h" /* Timer control structures */
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72
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73
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74 /* Check to see if the file has been included already. */
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75
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76 #ifndef TC_DEFS
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77 #define TC_DEFS
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78
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79
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80 /* Define constants local to this component. */
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81
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82 #define TC_TASK_ID 0x5441534bUL
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83 #define TC_HISR_ID 0x48495352UL
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84 #define TC_PRIORITIES 256
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85 #define TC_HISR_PRIORITIES 3
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86 #define TC_MAX_GROUPS (TC_PRIORITIES/8)
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87 #define TC_HIGHEST_MASK 0x000000FFUL
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88 #define TC_NEXT_HIGHEST_MASK 0x0000FF00UL
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89 #define TC_NEXT_LOWEST_MASK 0x00FF0000UL
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90 #define TC_LOWEST_MASK 0xFF000000UL
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91
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92 /* Define the Task Control Block data type. */
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93
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94 typedef struct TC_TCB_STRUCT
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95 {
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96 /* Standard thread information first. This information is used by
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97 the target dependent portion of this component. Changes made
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98 to this area of the structure can have undesirable side effects. */
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99
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100 CS_NODE tc_created; /* Node for linking to */
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101 /* created task list */
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102 UNSIGNED tc_id; /* Internal TCB ID */
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103 CHAR tc_name[NU_MAX_NAME]; /* Task name */
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104 DATA_ELEMENT tc_status; /* Task status */
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105 BOOLEAN tc_delayed_suspend; /* Delayed task suspension*/
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106 DATA_ELEMENT tc_priority; /* Task priority */
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107 BOOLEAN tc_preemption; /* Task preemption enable */
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108 UNSIGNED tc_scheduled; /* Task scheduled count */
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109 UNSIGNED tc_cur_time_slice; /* Current time slice */
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110 VOID *tc_stack_start; /* Stack starting address */
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111 VOID *tc_stack_end; /* Stack ending address */
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112 VOID *tc_stack_pointer; /* Task stack pointer */
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113 UNSIGNED tc_stack_size; /* Task stack's size */
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114 UNSIGNED tc_stack_minimum; /* Minimum stack size */
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115 struct TC_PROTECT_STRUCT
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116 *tc_current_protect; /* Current protection */
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117 VOID *tc_saved_stack_ptr; /* Previous stack pointer */
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118 UNSIGNED tc_time_slice; /* Task time slice value */
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119
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120 /* Information after this point is not used in the target dependent
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121 portion of this component. Hence, changes in the following section
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122 should not impact assembly language routines. */
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123 struct TC_TCB_STRUCT
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124 *tc_ready_previous, /* Previously ready TCB */
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125 *tc_ready_next; /* next and previous ptrs */
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126
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127 /* Task control information follows. */
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128
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129 UNSIGNED tc_priority_group; /* Priority group mask bit*/
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130 struct TC_TCB_STRUCT
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131 **tc_priority_head; /* Pointer to list head */
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132 DATA_ELEMENT *tc_sub_priority_ptr; /* Pointer to sub-group */
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133 DATA_ELEMENT tc_sub_priority; /* Mask of sub-group bit */
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134 DATA_ELEMENT tc_saved_status; /* Previous task status */
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135 BOOLEAN tc_signal_active; /* Signal active flag */
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136
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137 #if PAD_3
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138 DATA_ELEMENT tc_padding[PAD_3];
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139 #endif
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140
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141 /* Task entry function */
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142 VOID (*tc_entry)(UNSIGNED, VOID *);
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143 UNSIGNED tc_argc; /* Optional task argument */
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144 VOID *tc_argv; /* Optional task argument */
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145 VOID (*tc_cleanup) (VOID *);/* Clean-up routine */
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146 VOID *tc_cleanup_info; /* Clean-up information */
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147 struct TC_PROTECT_STRUCT
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148 *tc_suspend_protect; /* Protection at time of */
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149 /* task suspension */
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150
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151 /* Task timer information. */
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152 INT tc_timer_active; /* Active timer flag */
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153 TM_TCB tc_timer_control; /* Timer control block */
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154
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155 /* Task signal control information. */
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156
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157 UNSIGNED tc_signals; /* Current signals */
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158 UNSIGNED tc_enabled_signals; /* Enabled signals */
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159
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160 /* tc_saved_status and tc_signal_active are now defined above in an
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161 attempt to keep DATA_ELEMENT types together. */
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162
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163 /* Signal handling routine. */
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164 VOID (*tc_signal_handler) (UNSIGNED);
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165
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166 /* Reserved words for the system and a single reserved word for the
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167 application. */
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168 UNSIGNED tc_system_reserved_1; /* System reserved word */
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169 UNSIGNED tc_system_reserved_2; /* System reserved word */
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170 UNSIGNED tc_system_reserved_3; /* System reserved word */
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171 UNSIGNED tc_app_reserved_1; /* Application reserved */
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172
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173 /* This information is accessed in assembly */
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174 #if ((NU_SUPERV_USER_MODE == 1)||(NU_MODULE_SUPPORT == 1))
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175 UNSIGNED tc_su_mode; /* Supervisor/User mode indicator */
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176 UNSIGNED tc_module; /* Module identifier */
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177 #endif
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178
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179 } TC_TCB;
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180
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181
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182 /* Define the High-Level Interrupt Service Routine Control Block data type. */
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183
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184 typedef struct TC_HCB_STRUCT
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185 {
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186 /* Standard thread information first. This information is used by
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187 the target dependent portion of this component. Changes made
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188 to this area of the structure can have undesirable side effects. */
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189
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190 CS_NODE tc_created; /* Node for linking to */
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191 /* created task list */
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192 UNSIGNED tc_id; /* Internal TCB ID */
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193 CHAR tc_name[NU_MAX_NAME]; /* HISR name */
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194 DATA_ELEMENT tc_not_used_1; /* Not used field */
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195 DATA_ELEMENT tc_not_used_2; /* Not used field */
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196 DATA_ELEMENT tc_priority; /* HISR priority */
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197 DATA_ELEMENT tc_not_used_3; /* Not used field */
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198 UNSIGNED tc_scheduled; /* HISR scheduled count */
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199 UNSIGNED tc_cur_time_slice; /* Not used in HISR */
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200 VOID *tc_stack_start; /* Stack starting address */
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201 VOID *tc_stack_end; /* Stack ending address */
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202 VOID *tc_stack_pointer; /* HISR stack pointer */
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203 UNSIGNED tc_stack_size; /* HISR stack's size */
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204 UNSIGNED tc_stack_minimum; /* Minimum stack size */
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205 struct TC_PROTECT_STRUCT
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206 *tc_current_protect; /* Current protection */
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207 struct TC_HCB_STRUCT
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208 *tc_active_next; /* Next activated HISR */
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209 UNSIGNED tc_activation_count; /* Activation counter */
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210 VOID (*tc_entry)(VOID); /* HISR entry function */
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211
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212 /* Information after this point is not used in the target dependent
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213 portion of this component. Hence, changes in the following section
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214 should not impact assembly language routines. */
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215
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216
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217 /* Reserved words for the system and a single reserved word for the
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218 application. */
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219 UNSIGNED tc_system_reserved_1; /* System reserved word */
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220 UNSIGNED tc_system_reserved_2; /* System reserved word */
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221 UNSIGNED tc_system_reserved_3; /* System reserved word */
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222 UNSIGNED tc_app_reserved_1; /* Application reserved */
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223
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224 /* This information is accessed in assembly */
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225 #if ((NU_SUPERV_USER_MODE == 1)||(NU_MODULE_SUPPORT == 1))
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226 UNSIGNED tc_su_mode; /* Supervisor/User mode indicator */
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227 UNSIGNED tc_module; /* Module identifier */
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228 #endif
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229
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230 } TC_HCB;
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231
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232
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233 /* Define the Task/HISR protection structure type. */
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234
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235 typedef struct TC_PROTECT_STRUCT
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236 {
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237 TC_TCB *tc_tcb_pointer; /* Owner of the protection */
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238 UNSIGNED tc_thread_waiting; /* Waiting thread flag */
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239 } TC_PROTECT;
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240
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241 #endif
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242
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243
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244
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245