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annotate nucleus/tcd.c @ 46:38cf7fa65976

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sprintf/float.c: rounding corner case bug
author Mychaela Falconia <falcon@freecalypso.org>
date Fri, 29 Sep 2017 03:23:01 +0000
parents 75a11d740a02
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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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
110
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
111 CS_NODE *TCD_Created_Tasks_List;
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
112
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
113
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
114 /* TCD_Total_Tasks contains the number of currently created tasks. */
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
115
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
116 UNSIGNED TCD_Total_Tasks;
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
117
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
118
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
119 /* TCD_Priority_List is an array of TCB pointers. Each element of the array
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
120 is effectively the head pointer of the list of tasks ready for execution
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
121 at that priority. If the pointer is NULL, there are no tasks ready
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
122 for execution at that priority. The array is indexed by priority. */
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
123
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
124 TC_TCB *TCD_Priority_List[TC_PRIORITIES];
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
125
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
126
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
127 /* TCD_Priority_Groups is a 32-bit unsigned integer that is used as a bit
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
128 map. Each bit corresponds to an 8-priority group. For example, if bit 0
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
129 is set, at least one task of priority 0 through 8 is ready for execution. */
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
130
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
131 UNSIGNED TCD_Priority_Groups;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
132
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
133
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
134 /* TCD_Sub_Priority_Groups is an array of sub-priority groups. These are
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
135 also used as bit maps. Index 0 of this array corresponds to priorities
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
136 0 through 8. Bit 0 of this element represents priority 0, while bit 7
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
137 represents priority 7. */
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
138
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
139 DATA_ELEMENT TCD_Sub_Priority_Groups[TC_MAX_GROUPS];
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
140
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
141
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
142 /* TCD_Lowest_Set_Bit is nothing more than a standard lookup table. The
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
143 table is indexed by values ranging from 1 to 255. The value at that
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
144 position in the table indicates the number of the lowest set bit. This is
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
145 used to determine the highest priority task represented in the previously
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
146 defined bit maps. */
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
147
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
148 const UNSIGNED_CHAR TCD_Lowest_Set_Bit[] = {0,
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.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,
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.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,
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.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,
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.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,
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.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,
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.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,
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.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,
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.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,
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.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,
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.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,
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
159 0, 2, 0, 1, 0};
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
160
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
161
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
162 /* TCD_Highest_Priority contains the highest priority task ready for execution.
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
163 Note that this does not necessarily represent the priority of the currently
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
164 executing task. This is true if the currently executing task has preemption
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
165 disabled. If no tasks are executing, this variable is set to the maximum
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
166 priority. */
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
167
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
168 INT TCD_Highest_Priority;
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
169
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
170
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
171 /* TCD_Execute_Task is a pointer to the task to execute. Note that this
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
172 pointer does not necessarily point to the currently executing task. There
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
173 are several points in the system where this is true. One situation is
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
174 when preemption is about to take place. Another situation can result from
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
175 a internal protection conflict. */
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
176
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
177 TC_TCB *TCD_Execute_Task;
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
178
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
179
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
180 /* TCD_Created_HISRs_List is the head pointer of the list of created High-
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
181 Level Interrupt Service Routines (HISR). If this pointer is NU_NULL, there
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
182 are no HISRs currently created. */
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
183
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
184 CS_NODE *TCD_Created_HISRs_List;
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
185
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
186
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
187 /* TCD_Total_HISRs contains the number of currently created HISRs. */
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
188
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
189 UNSIGNED TCD_Total_HISRs;
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
190
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
191
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
192 /* TCD_Active_HISR_Heads is an array of active HISR list head pointers.
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
193 There are three HISR priorities available. The HISR priority is an index
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
194 into this table. Priority/index 0 represents the highest priority. */
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
195
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
196 TC_HCB *TCD_Active_HISR_Heads[TC_HISR_PRIORITIES];
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
197
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
198
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
199 /* TCD_Active_HISR_Tails is an array of active HISR list tail pointers.
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
200 There are three HISR priorities available. The HISR priority is an index
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
201 into this table. Priority/index 0 represents the highest priority. */
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
202
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
203 TC_HCB *TCD_Active_HISR_Tails[TC_HISR_PRIORITIES];
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
204
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
205
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
206 /* TCD_Execute_HISR contains a pointer to the highest priority HISR to execute.
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
207 If this pointer is NU_NULL, no HISRs are currently activated. Note that
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
208 the current thread pointer is not always equal to this pointer. */
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
209
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
210 TC_HCB *TCD_Execute_HISR;
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
211
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
212
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
213 /* TCD_Current_Thread points to the control block of the currently executing
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
214 thread of execution. Therefore, this variable points at either a TC_TCB
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
215 or a TC_HCB structure. Except for initialization, this variable is set
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
216 and cleared in the target dependent portion of this component. */
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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217
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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218 VOID *TCD_Current_Thread;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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219
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
220
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
221 /* TCD_System_Stack contains the system stack base pointer. When the system
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
222 is idle or in interrupt processing the system stack pointer is used. This
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
223 variable is usually setup during target dependent initialization. */
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
224
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
225 VOID *TCD_System_Stack;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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226
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
227
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
228 #if 0
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
229 /* TCD_Registered_LISRs is a list that specifies whether or not a
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
230 LISR is registered for a given interrupt vector. If the value in the
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
231 list indexed by the vector is non-zero, then that value can be used
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
232 as the index into the list of LISR pointers to find the actual registered
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
233 LISR. */
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
234
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
235 UNSIGNED_CHAR TCD_Registered_LISRs[NU_MAX_VECTORS+1];
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
236
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
237
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
238 /* TCD_LISR_Pointers is a list of LISR pointers that indicate the LISR function
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
239 to call when the interrupt occurs. If the entry is NULL, it is
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
240 available. */
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
241
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
242 VOID (*TCD_LISR_Pointers[NU_MAX_LISRS+1])(INT vector);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
243 #endif
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
244
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
245
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
246 /* TCD_Interrupt_Count contains the number of Interrupt Service Routines (ISRs)
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
247 currently in progress. If the contents of this variable is zero, then no
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
248 interrupts are in progress. If the contents are greater than 1, nested
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
249 interrupts are being processed. */
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
250
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
251 INT TCD_Interrupt_Count;
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
252
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
253
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
254 /* TCD_Stack_Switched contains a flag indicating that the system stack was
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
255 switched to after the thread's context was saved. This variable is not
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
256 used in all ports. */
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
257
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
258 INT TCD_Stack_Switched;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
259
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
260
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
261 /* TCD_List_Protect is a structure that is used to protect against multiple
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
262 access to the list of established tasks. */
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
263
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
264 TC_PROTECT TCD_List_Protect;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
265
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
266
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
267 /* TCD_System_Protect is a structure that is used to provide protection
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
268 against multiple threads accessing the same system structures at the
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
269 same time. */
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
270
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
271 TC_PROTECT TCD_System_Protect;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
272
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
273
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
274 #if 0
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
275 /* TCD_LISR_Protect is a structure that is used to provide protection against
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
276 multiple threads accessing the LISR registration structures at the same
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
277 time. */
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
278
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
279 TC_PROTECT TCD_LISR_Protect;
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
280 #endif
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
281
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
282
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
283 /* TCD_HISR_Protect is a structure that is used to provide protection against
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
284 multiple threads accessing the created HISR linked-list at the same time. */
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
285
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
286 TC_PROTECT TCD_HISR_Protect;
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
287
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
288
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
289 /* TCD_Interrupt_Level is a variable that contains the enabled interrupt
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
290 level. If the target processor does not have multiple enable interrupt
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
291 levels, this variable is a boolean. */
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
292
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
293 INT TCD_Interrupt_Level;
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
294
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
295
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
296 /* TCD_Unhandled_Interrupt is a variable that contains the last unhandled
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
297 interrupt in system error conditions. */
75a11d740a02 initial import of gsm-fw from freecalypso-sw rev 1033:5ab737ac3ad7
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
298
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
299 INT TCD_Unhandled_Interrupt;