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annotate nuc-fw/nucleus/tcd.c @ 111:5b7403f6ae93

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nuc-fw/bsp: more reconciliation
author Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
date Sun, 20 Oct 2013 07:58:00 +0000
parents 947b1f473960
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 /* 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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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
142 /* TCD_Lowest_Set_Bit is nothing more than a standard lookup table. The
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
143 table is indexed by values ranging from 1 to 255. The value at that
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
144 position in the table indicates the number of the lowest set bit. This is
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
145 used to determine the highest priority task represented in the previously
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
146 defined bit maps. */
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
147
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
148 UNSIGNED_CHAR TCD_Lowest_Set_Bit[] = {0,
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
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,
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
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,
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
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,
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
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,
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
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,
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
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,
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
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,
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
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,
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
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,
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
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,
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
159 0, 2, 0, 1, 0};
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
160
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
161
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
162 /* TCD_Highest_Priority contains the highest priority task ready for execution.
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
163 Note that this does not necessarily represent the priority of the currently
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
164 executing task. This is true if the currently executing task has preemption
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
165 disabled. If no tasks are executing, this variable is set to the maximum
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
166 priority. */
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
167
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
168 INT TCD_Highest_Priority;
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
169
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
170
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
171 /* TCD_Execute_Task is a pointer to the task to execute. Note that this
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
172 pointer does not necessarily point to the currently executing task. There
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
173 are several points in the system where this is true. One situation is
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
174 when preemption is about to take place. Another situation can result from
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
175 a internal protection conflict. */
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
176
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
177 TC_TCB *TCD_Execute_Task;
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
178
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
179
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
180 /* TCD_Created_HISRs_List is the head pointer of the list of created High-
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
181 Level Interrupt Service Routines (HISR). If this pointer is NU_NULL, there
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
182 are no HISRs currently created. */
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
183
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
184 CS_NODE *TCD_Created_HISRs_List;
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
185
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
186
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
187 /* TCD_Total_HISRs contains the number of currently created HISRs. */
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
188
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
189 UNSIGNED TCD_Total_HISRs;
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
190
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
191
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
192 /* TCD_Active_HISR_Heads is an array of active HISR list head pointers.
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
193 There are three HISR priorities available. The HISR priority is an index
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
194 into this table. Priority/index 0 represents the highest priority. */
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
195
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
196 TC_HCB *TCD_Active_HISR_Heads[TC_HISR_PRIORITIES];
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
197
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
198
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
199 /* TCD_Active_HISR_Tails is an array of active HISR list tail pointers.
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
200 There are three HISR priorities available. The HISR priority is an index
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
201 into this table. Priority/index 0 represents the highest priority. */
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
202
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
203 TC_HCB *TCD_Active_HISR_Tails[TC_HISR_PRIORITIES];
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
204
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
205
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
206 /* TCD_Execute_HISR contains a pointer to the highest priority HISR to execute.
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
207 If this pointer is NU_NULL, no HISRs are currently activated. Note that
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
208 the current thread pointer is not always equal to this pointer. */
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
209
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
210 TC_HCB *TCD_Execute_HISR;
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
211
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
212
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
213 /* TCD_Current_Thread points to the control block of the currently executing
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
214 thread of execution. Therefore, this variable points at either a TC_TCB
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
215 or a TC_HCB structure. Except for initialization, this variable is set
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
216 and cleared in the target dependent portion of this component. */
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
217
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
218 VOID *TCD_Current_Thread;
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
219
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
220
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
221 /* TCD_System_Stack contains the system stack base pointer. When the system
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
222 is idle or in interrupt processing the system stack pointer is used. This
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
223 variable is usually setup during target dependent initialization. */
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
224
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
225 VOID *TCD_System_Stack;
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
226
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
227
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
228 /* TCD_Registered_LISRs is a list that specifies whether or not a
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
229 LISR is registered for a given interrupt vector. If the value in the
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
230 list indexed by the vector is non-zero, then that value can be used
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
231 as the index into the list of LISR pointers to find the actual registered
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
232 LISR. */
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
233
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
234 UNSIGNED_CHAR TCD_Registered_LISRs[NU_MAX_VECTORS+1];
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
235
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
236
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
237 /* TCD_LISR_Pointers is a list of LISR pointers that indicate the LISR function
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
238 to call when the interrupt occurs. If the entry is NULL, it is
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
239 available. */
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
240
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
241 VOID (*TCD_LISR_Pointers[NU_MAX_LISRS+1])(INT vector);
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
242
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
243
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
244 /* TCD_Interrupt_Count contains the number of Interrupt Service Routines (ISRs)
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
245 currently in progress. If the contents of this variable is zero, then no
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
246 interrupts are in progress. If the contents are greater than 1, nested
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
247 interrupts are being processed. */
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
248
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
249 INT TCD_Interrupt_Count;
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
250
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
251
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
252 /* TCD_Stack_Switched contains a flag indicating that the system stack was
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
253 switched to after the thread's context was saved. This variable is not
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
254 used in all ports. */
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
255
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
256 INT TCD_Stack_Switched;
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
257
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
258
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
259 /* TCD_List_Protect is a structure that is used to protect against multiple
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
260 access to the list of established tasks. */
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
261
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
262 TC_PROTECT TCD_List_Protect;
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
263
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
264
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
265 /* TCD_System_Protect is a structure that is used to provide protection
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
266 against multiple threads accessing the same system structures at the
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
267 same time. */
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
268
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
269 TC_PROTECT TCD_System_Protect;
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
270
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
271
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
272 /* TCD_LISR_Protect is a structure that is used to provide protection against
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
273 multiple threads accessing the LISR registration structures at the same
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
274 time. */
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
275
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
276 TC_PROTECT TCD_LISR_Protect;
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
277
947b1f473960 beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
278
947b1f473960 beginning of nuc-fw
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279 /* TCD_HISR_Protect is a structure that is used to provide protection against
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280 multiple threads accessing the created HISR linked-list at the same time. */
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281
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282 TC_PROTECT TCD_HISR_Protect;
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283
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284
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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285 /* TCD_Interrupt_Level is a variable that contains the enabled interrupt
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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286 level. If the target processor does not have multiple enable interrupt
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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287 levels, this variable is a boolean. */
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288
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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289 INT TCD_Interrupt_Level;
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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290
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291
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292 /* TCD_Unhandled_Interrupt is a variable that contains the last unhandled
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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293 interrupt in system error conditions. */
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294
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295 INT TCD_Unhandled_Interrupt;
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296
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297
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298
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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299
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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300