FreeCalypso > hg > freecalypso-sw
annotate gsm-fw/nucleus/tcs.c @ 865:f5affe83ba2d
lldbg hack (poor girl's substitute for JTAG) implemented
author | Space Falcon <falcon@ivan.Harhan.ORG> |
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date | Fri, 15 May 2015 00:02:03 +0000 |
parents | afceeeb2cba1 |
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rev | line source |
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1 /*************************************************************************/ |
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2 /* */ |
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3 /* Copyright Mentor Graphics Corporation 2002 */ |
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4 /* All Rights Reserved. */ |
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5 /* */ |
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6 /* THIS WORK CONTAINS TRADE SECRET AND PROPRIETARY INFORMATION WHICH IS */ |
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7 /* THE PROPERTY OF MENTOR GRAPHICS CORPORATION OR ITS LICENSORS AND IS */ |
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8 /* SUBJECT TO LICENSE TERMS. */ |
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9 /* */ |
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10 /*************************************************************************/ |
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11 |
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12 /*************************************************************************/ |
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13 /* */ |
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14 /* FILE NAME VERSION */ |
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15 /* */ |
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16 /* tcs.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 supplemental routines for the Thread Control */ |
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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 /* None */ |
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30 /* */ |
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31 /* FUNCTIONS */ |
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32 /* */ |
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33 /* TCS_Change_Priority Change task's priority */ |
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34 /* TCS_Change_Preemption Change task's preemption */ |
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35 /* TCS_Change_Time_Slice Change task's time-slice */ |
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36 /* TCS_Control_Signals Control signals */ |
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37 /* TCS_Receive_Signals Receive signals */ |
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38 /* TCS_Register_Signal_Handler Register signal handler */ |
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39 /* TCS_Send_Signals Send signals to a task */ |
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40 /* */ |
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41 /* */ |
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42 /* DEPENDENCIES */ |
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43 /* */ |
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44 /* cs_extr.h Common Service functions */ |
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45 /* tc_extr.h Thread Control functions */ |
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46 /* in_extr.h Initialization/Interrupt */ |
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47 /* functions */ |
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48 /* tm_extr.h Timer Control function */ |
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49 /* er_extr.h Error handling function */ |
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50 /* hi_extr.h History functions */ |
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51 /* */ |
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52 /* HISTORY */ |
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53 /* */ |
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54 /* DATE REMARKS */ |
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55 /* */ |
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56 /* 03-01-1994 Created initial version 1.1 from */ |
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57 /* previous version of TCC.C */ |
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58 /* */ |
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59 /* 03-18-1994 Verified version 1.1 */ |
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60 /* 04-04-1996 Modified TCS_Send_Signals, */ |
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61 /* resulting in version 1.1+ */ |
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62 /* (spr 107) */ |
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63 /* 04-17-1996 updated to version 1.2 */ |
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64 /* 03-24-1998 Released version 1.3. */ |
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65 /* 03-26-1999 Released 1.11m (new release */ |
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66 /* numbering scheme) */ |
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67 /* 04-17-2002 Released version 1.13m */ |
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68 /* 11-07-2002 Released version 1.14 */ |
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69 /*************************************************************************/ |
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70 #define NU_SOURCE_FILE |
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71 |
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72 |
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73 #include "cs_extr.h" /* Common service functions */ |
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74 #include "tc_extr.h" /* Thread control functions */ |
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75 #include "in_extr.h" /* Initialization/Interrupt */ |
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76 /* functions */ |
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77 #include "tm_extr.h" /* Timer control functions */ |
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78 #include "er_extr.h" /* Error handling function */ |
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79 #include "hi_extr.h" /* History functions */ |
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80 #include "profiler.h" /* ProView interface */ |
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81 |
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82 |
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83 /* Define external inner-component global data references. */ |
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84 |
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85 extern CS_NODE *TCD_Created_Tasks_List; |
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86 extern TC_TCB *TCD_Priority_List[TC_PRIORITIES]; |
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87 extern UNSIGNED TCD_Priority_Groups; |
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88 extern DATA_ELEMENT TCD_Sub_Priority_Groups[TC_MAX_GROUPS]; |
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89 extern UNSIGNED_CHAR TCD_Lowest_Set_Bit[]; |
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90 extern INT TCD_Highest_Priority; |
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91 extern TC_TCB *TCD_Execute_Task; |
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92 extern VOID *TCD_Current_Thread; |
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93 extern TC_PROTECT TCD_System_Protect; |
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94 extern INT TMD_Time_Slice_State; |
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95 |
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96 |
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97 |
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98 /* Define external inner-component function calls that are not available to |
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99 other components. */ |
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100 |
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101 VOID TCT_Build_Signal_Frame(TC_TCB *task_ptr); |
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102 VOID TCT_Protect_Switch(TC_TCB *task); |
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103 VOID TCT_Signal_Exit(VOID); |
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104 |
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105 |
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106 /* Define internal function calls. */ |
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107 |
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108 VOID TCC_Signal_Shell(VOID); |
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109 |
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110 |
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111 /*************************************************************************/ |
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112 /* */ |
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113 /* FUNCTION */ |
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114 /* */ |
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115 /* TCS_Change_Priority */ |
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116 /* */ |
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117 /* DESCRIPTION */ |
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118 /* */ |
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119 /* This function changes the priority of the specified task. The */ |
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120 /* priority of a suspended or a ready task can be changed. If the */ |
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121 /* new priority necessitates a context switch, control is */ |
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122 /* transferred back to the system. */ |
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123 /* */ |
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124 /* CALLED BY */ |
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125 /* */ |
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126 /* Application */ |
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127 /* TCSE_Change_Priority Error checking shell */ |
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128 /* */ |
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129 /* CALLS */ |
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130 /* */ |
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131 /* [HIC_Make_History_Entry] Make entry in history log */ |
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132 /* [TCT_Check_Stack] Stack checking function */ |
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133 /* TCT_Control_To_System Transfer control to system */ |
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134 /* TCT_Protect Protect scheduling data */ |
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135 /* TCT_Set_Execute_Task Set TCD_Execute_Task pointer */ |
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136 /* TCT_Unprotect Release protection of data */ |
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137 /* */ |
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138 /* INPUTS */ |
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139 /* */ |
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140 /* task_ptr Task control block pointer */ |
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141 /* new_priority New priority for task */ |
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142 /* */ |
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143 /* OUTPUTS */ |
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144 /* */ |
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145 /* old_priority Original task priority */ |
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146 /* */ |
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147 /* HISTORY */ |
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148 /* */ |
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149 /* DATE REMARKS */ |
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150 /* */ |
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151 /* 03-01-1993 Created initial version 1.0 */ |
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152 /* 04-19-1993 Verified version 1.0 */ |
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153 /* 03-01-1994 Modified function interface, */ |
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154 /* added register optimizations, */ |
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155 /* modified protection logic, */ |
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156 /* resulting in version 1.1 */ |
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157 /* */ |
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158 /* 03-18-1994 Verified version 1.1 */ |
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159 /* */ |
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160 /* 10-4-1999 Bug fixes - return if new */ |
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161 /* priority equals old priority */ |
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162 /* and don't move the head pointer */ |
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163 /* unless the head node is changing */ |
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164 /*************************************************************************/ |
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165 OPTION TCS_Change_Priority(NU_TASK *task_ptr, OPTION new_priority) |
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166 { |
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167 |
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168 R1 TC_TCB *task; /* Task control block ptr */ |
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169 R2 TC_TCB *head; /* Head list pointer */ |
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170 R3 INT index; /* Working index variable */ |
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171 OPTION old_priority; /* Previous priority of task */ |
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172 DATA_ELEMENT temp; /* Temporary variable */ |
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173 NU_SUPERV_USER_VARIABLES |
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174 |
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175 /* Switch to supervisor mode */ |
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176 NU_SUPERVISOR_MODE(); |
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177 |
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178 /* Move task control block pointer into internal pointer. */ |
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179 task = (TC_TCB *) task_ptr; |
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180 |
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181 |
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182 #ifdef NU_ENABLE_STACK_CHECK |
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183 |
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184 /* Call stack checking function to check for an overflow condition. */ |
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185 TCT_Check_Stack(); |
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186 |
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187 #endif |
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188 |
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189 #ifdef NU_ENABLE_HISTORY |
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190 |
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191 /* Make an entry that corresponds to this function in the system history |
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192 log. */ |
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193 HIC_Make_History_Entry(NU_CHANGE_PRIORITY_ID, (UNSIGNED) task, |
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194 (UNSIGNED) new_priority, (UNSIGNED) 0); |
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195 |
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196 #endif |
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197 |
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198 /* Protect against multiple access to the scheduling list. */ |
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199 TCT_Protect(&TCD_System_Protect); |
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200 |
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201 /* Save the old priority of the task. */ |
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202 old_priority = task -> tc_priority; |
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203 |
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204 |
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205 /* BUG FIX this should probably go into an error checking routine instead of here */ |
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206 if (!(task -> tc_priority == new_priority)) |
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207 { |
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208 |
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209 |
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210 /* Check to see if the task is currently ready. */ |
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211 if (task -> tc_status == NU_READY) |
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212 { |
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213 |
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214 /* Remove the task from the ready list. */ |
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215 |
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216 /* Determine if the task is the only one on the list. */ |
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217 if (task -> tc_ready_next == task) |
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218 { |
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219 |
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220 /* Only task on the list. Clear the task's pointers and |
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221 clear the entry in the priority table. */ |
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222 task -> tc_ready_next = NU_NULL; |
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223 task -> tc_ready_previous = NU_NULL; |
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224 *(task -> tc_priority_head) = NU_NULL; |
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225 |
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226 /* Clear the sub-priority group. */ |
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227 *(task -> tc_sub_priority_ptr) = |
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228 *(task -> tc_sub_priority_ptr) & ~(task -> tc_sub_priority); |
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229 |
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230 /* Determine if the main priority group needs to be cleared. |
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231 This is only true if there are no other bits set in this |
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232 sub-priority. */ |
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233 if (*(task -> tc_sub_priority_ptr) == 0) |
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234 |
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235 /* Clear the main priority group bit. */ |
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236 TCD_Priority_Groups = |
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237 TCD_Priority_Groups & ~(task -> tc_priority_group); |
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238 } |
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239 else |
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240 { |
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241 |
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242 /* Not the only task ready at the same priority level. */ |
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243 |
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244 /* Remove from the linked-list. */ |
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245 (task -> tc_ready_previous) -> tc_ready_next = |
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246 task -> tc_ready_next; |
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247 (task -> tc_ready_next) -> tc_ready_previous = |
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248 task -> tc_ready_previous; |
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249 |
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250 |
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251 |
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252 /* Update the head pointer. */ |
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253 /* BUG FIX - update head if head is changing priority - leave |
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254 it alone otherwise! */ |
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255 if(*(task -> tc_priority_head) == task ) |
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256 *(task -> tc_priority_head) = task -> tc_ready_next; |
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257 |
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258 /* Clear the next and previous pointers. */ |
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259 task -> tc_ready_next = NU_NULL; |
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260 task -> tc_ready_previous = NU_NULL; |
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261 } |
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262 |
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263 /* Now add in the task at the new priority. */ |
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264 task -> tc_priority = new_priority; |
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265 |
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266 /* Build the other priority information. */ |
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267 task -> tc_priority = new_priority; |
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268 task -> tc_priority_head = &(TCD_Priority_List[new_priority]); |
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269 task -> tc_sub_priority = (DATA_ELEMENT) (1 << (new_priority & 7)); |
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270 task -> tc_priority_group = ((UNSIGNED) 1) << (new_priority >> 3); |
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271 task -> tc_sub_priority_ptr = |
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272 &(TCD_Sub_Priority_Groups[(new_priority >> 3)]); |
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273 |
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274 #ifdef INCLUDE_PROVIEW |
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275 _RTProf_DumpTask(task,RT_PROF_CHANGE_PRIORITY); |
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276 #endif |
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277 /* Link the task into the new priority list. */ |
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278 head = *(task -> tc_priority_head); |
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279 |
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280 /* Determine if the list is non-empty. */ |
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281 if (head) |
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282 { |
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283 |
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284 /* Add the TCB to the end of the ready list. */ |
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285 task -> tc_ready_previous = head -> tc_ready_previous; |
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286 (task -> tc_ready_previous) -> tc_ready_next = task; |
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287 task -> tc_ready_next = head; |
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288 (task -> tc_ready_next) -> tc_ready_previous = task; |
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289 |
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290 /* Note that the priority bit map does not need to be |
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291 modified since there are other active tasks at the |
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292 same priority. */ |
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293 } |
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294 else |
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295 { |
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296 |
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297 /* Add the TCB to an empty list. */ |
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298 task -> tc_ready_previous = task; |
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299 task -> tc_ready_next = task; |
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300 *(task -> tc_priority_head)= task; |
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301 |
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302 /* Update the priority group bit map to indicate that this |
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303 priority now has a task ready. */ |
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|
304 TCD_Priority_Groups = |
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305 TCD_Priority_Groups | (task -> tc_priority_group); |
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306 |
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307 /* Update the sub-priority bit map to show that this priority |
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308 is ready. */ |
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309 *(task -> tc_sub_priority_ptr) = |
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310 (*(task -> tc_sub_priority_ptr)) | task -> tc_sub_priority; |
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|
311 } |
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312 |
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313 /* Determine the highest priority task in the system. */ |
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314 if (TCD_Priority_Groups & TC_HIGHEST_MASK) |
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|
315 |
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316 /* Base of sub-group is 0. */ |
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317 index = 0; |
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|
318 |
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319 else if (TCD_Priority_Groups & TC_NEXT_HIGHEST_MASK) |
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|
320 |
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321 /* Base of sub-group is 8. */ |
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|
322 index = 8; |
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|
323 |
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324 else if (TCD_Priority_Groups & TC_NEXT_LOWEST_MASK) |
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|
325 |
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326 /* Base of sub-group is 16. */ |
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|
327 index = 16; |
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|
328 else |
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|
329 |
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330 /* Base of sub-group is 24. */ |
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|
331 index = 24; |
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|
332 |
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|
333 /* Calculate the highest available priority. */ |
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|
334 index = index + TCD_Lowest_Set_Bit[(INT) |
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|
335 ((TCD_Priority_Groups >> index) & TC_HIGHEST_MASK)]; |
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|
336 |
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|
337 /* Get the mask of the priority within the group of 8 priorities. */ |
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|
338 temp = TCD_Sub_Priority_Groups[index]; |
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|
339 |
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|
340 /* Calculate the actual priority. */ |
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|
341 TCD_Highest_Priority = (index << 3) + TCD_Lowest_Set_Bit[temp]; |
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|
342 |
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|
343 /* Check for preemption. */ |
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344 if ((TCD_Highest_Priority <= ((INT) TCD_Execute_Task -> tc_priority)) |
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345 && (TCD_Execute_Task -> tc_preemption)) |
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|
346 { |
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|
347 |
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348 /* Update the current task pointer. */ |
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349 TCT_Set_Execute_Task(TCD_Priority_List[TCD_Highest_Priority]); |
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|
350 |
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351 /* Now, check and see if the current thread is a task. |
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352 If so, return a status that indicates a context |
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|
353 switch is needed. */ |
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|
354 if ((TCD_Current_Thread) && |
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|
355 (((TC_TCB *) TCD_Current_Thread) -> tc_id == TC_TASK_ID)) |
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|
356 |
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357 /* Transfer control to the system. */ |
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|
358 TCT_Control_To_System(); |
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|
359 } |
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|
360 } |
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|
361 else |
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|
362 { |
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|
363 |
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|
364 /* Just modify the priority. */ |
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|
365 task -> tc_priority = new_priority; |
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|
366 |
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367 /* Build the other priority information. */ |
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368 task -> tc_priority = new_priority; |
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369 task -> tc_priority_head = &(TCD_Priority_List[new_priority]); |
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370 task -> tc_sub_priority = (DATA_ELEMENT) (1 << (new_priority & 7)); |
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371 task -> tc_priority_group = ((UNSIGNED) 1) << (new_priority >> 3); |
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|
372 task -> tc_sub_priority_ptr = |
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373 &(TCD_Sub_Priority_Groups[(new_priority >> 3)]); |
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|
374 } |
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|
375 #ifdef INCLUDE_PROVIEW |
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376 _RTProf_DumpTask(task,RT_PROF_CHANGE_PRIORITY); |
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377 #endif |
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378 } |
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379 |
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380 /* Release the protection of the scheduling list. */ |
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381 TCT_Unprotect(); |
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382 |
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383 /* Return to user mode */ |
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384 NU_USER_MODE(); |
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385 |
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386 /* Return the old priority. */ |
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387 return(old_priority); |
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388 } |
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389 |
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390 |
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391 /*************************************************************************/ |
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392 /* */ |
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393 /* FUNCTION */ |
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394 /* */ |
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395 /* TCS_Change_Preemption */ |
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396 /* */ |
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397 /* DESCRIPTION */ |
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398 /* */ |
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399 /* This function changes the preemption posture of the calling */ |
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400 /* task. Preemption for a task may be enabled or disabled. If */ |
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401 /* it is disabled, the task runs until it suspends or relinquishes. */ |
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402 /* If a preemption is pending, a call to this function to enable */ |
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403 /* preemption causes a context switch. */ |
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404 /* */ |
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405 /* CALLED BY */ |
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406 /* */ |
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407 /* Application */ |
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408 /* TCSE_Change_Preemption Error checking function */ |
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409 /* */ |
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410 /* CALLS */ |
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411 /* */ |
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412 /* [HIC_Make_History_Entry] Make entry in history log */ |
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413 /* [TCT_Check_Stack] Stack checking function */ |
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414 /* TCT_Control_To_System Transfer control to system */ |
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415 /* TCT_Protect Protect scheduling info */ |
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416 /* TCT_Set_Execute_Task Set TCD_Execute_Task pointer */ |
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417 /* TCT_Unprotect Release protection of info */ |
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418 /* */ |
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419 /* INPUTS */ |
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|
420 /* */ |
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|
421 /* preempt Preempt selection parameter */ |
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|
422 /* */ |
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|
423 /* OUTPUTS */ |
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|
424 /* */ |
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425 /* old_preempt Original preempt value */ |
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|
426 /* */ |
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|
427 /* HISTORY */ |
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|
428 /* */ |
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429 /* DATE REMARKS */ |
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|
430 /* */ |
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431 /* 03-01-1993 Created initial version 1.0 */ |
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432 /* 04-19-1993 Verified version 1.0 */ |
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433 /* 03-01-1994 Modified protection logic, */ |
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434 /* resulting in version 1.1 */ |
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|
435 /* */ |
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|
436 /* 03-18-1994 Verified version 1.1 */ |
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|
437 /* */ |
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|
438 /*************************************************************************/ |
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|
439 OPTION TCS_Change_Preemption(OPTION preempt) |
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|
440 { |
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|
441 |
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|
442 TC_TCB *task; /* Pointer to task */ |
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|
443 OPTION old_preempt; |
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|
444 NU_SUPERV_USER_VARIABLES |
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|
445 |
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|
446 /* Switch to supervisor mode */ |
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|
447 NU_SUPERVISOR_MODE(); |
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|
448 |
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|
449 #ifdef NU_ENABLE_STACK_CHECK |
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|
450 |
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|
451 /* Call stack checking function to check for an overflow condition. */ |
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|
452 TCT_Check_Stack(); |
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|
453 |
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|
454 #endif |
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|
455 |
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|
456 #ifdef NU_ENABLE_HISTORY |
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|
457 |
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|
458 /* Make an entry that corresponds to this function in the system history |
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|
459 log. */ |
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|
460 HIC_Make_History_Entry(NU_CHANGE_PREEMPTION_ID, (UNSIGNED) preempt, |
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|
461 (UNSIGNED) 0, (UNSIGNED) 0); |
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|
462 |
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|
463 #endif |
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diff
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|
464 |
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|
465 /* Protect the scheduling information. */ |
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|
466 TCT_Protect(&TCD_System_Protect); |
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|
467 |
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|
468 /* Pickup the current thread and place it in the task pointer. */ |
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469 task = (TC_TCB *) TCD_Current_Thread; |
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|
470 |
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|
471 /* Save the old preempt value. */ |
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|
472 if (task -> tc_preemption) |
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|
473 |
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diff
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|
474 /* Previously enabled. */ |
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|
475 old_preempt = NU_PREEMPT; |
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|
476 else |
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diff
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|
477 |
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|
478 /* Previously disabled. */ |
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|
479 old_preempt = NU_NO_PREEMPT; |
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|
480 |
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|
481 /* Process the new value. */ |
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|
482 if (preempt == NU_NO_PREEMPT) |
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|
483 |
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|
484 /* Disable preemption. */ |
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|
485 TCD_Execute_Task -> tc_preemption = NU_FALSE; |
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|
486 else |
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|
487 { |
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|
488 |
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|
489 /* Enable preemption. */ |
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|
490 task -> tc_preemption = NU_TRUE; |
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|
491 |
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|
492 /* Check for a preemption condition. */ |
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493 if ((task == TCD_Execute_Task) && |
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494 (TCD_Highest_Priority < ((INT) TCD_Execute_Task -> tc_priority))) |
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diff
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|
495 { |
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diff
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|
496 |
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|
497 /* Preempt the current task. */ |
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|
498 TCT_Set_Execute_Task(TCD_Priority_List[TCD_Highest_Priority]); |
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|
499 |
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|
500 /* Transfer control to the system. */ |
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|
501 TCT_Control_To_System(); |
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|
502 } |
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|
503 } |
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|
504 |
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505 #ifdef INCLUDE_PROVIEW |
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506 _RTProf_DumpTask(task,RT_PROF_CHANGE_PREEMPTION); |
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|
507 #endif |
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|
508 |
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|
509 /* Release protection of information. */ |
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|
510 TCT_Unprotect(); |
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|
511 |
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|
512 /* Return to user mode */ |
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|
513 NU_USER_MODE(); |
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|
514 |
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|
515 /* Return the previous preemption posture. */ |
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|
516 return(old_preempt); |
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517 } |
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|
518 |
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|
519 |
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|
520 /*************************************************************************/ |
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|
521 /* */ |
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|
522 /* FUNCTION */ |
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|
523 /* */ |
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|
524 /* TCS_Change_Time_Slice */ |
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|
525 /* */ |
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|
526 /* DESCRIPTION */ |
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|
527 /* */ |
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|
528 /* This function changes the time slice of the specified task. A */ |
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529 /* time slice value of 0 disables time slicing. */ |
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|
530 /* */ |
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|
531 /* CALLED BY */ |
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|
532 /* */ |
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533 /* Application */ |
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534 /* TCES_Change_Preemption Error checking function */ |
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|
535 /* */ |
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|
536 /* CALLS */ |
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|
537 /* */ |
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|
538 /* [HIC_Make_History_Entry] Make entry in history log */ |
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539 /* [TCT_Check_Stack] Stack checking function */ |
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540 /* TCT_Protect Protect scheduling info */ |
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541 /* TCT_Unprotect Release protection of info */ |
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|
542 /* */ |
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|
543 /* INPUTS */ |
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|
544 /* */ |
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|
545 /* task_ptr Task control block pointer */ |
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|
546 /* time_slice New time slice value */ |
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|
547 /* */ |
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|
548 /* OUTPUTS */ |
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|
549 /* */ |
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|
550 /* old_time_slice Original time slice value */ |
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|
551 /* */ |
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|
552 /* HISTORY */ |
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|
553 /* */ |
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|
554 /* DATE REMARKS */ |
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|
555 /* */ |
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|
556 /* 03-01-1993 Created initial version 1.0 */ |
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|
557 /* 04-19-1993 Verified version 1.0 */ |
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558 /* 03-01-1994 Modified function interface, */ |
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|
559 /* added register optimizations, */ |
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|
560 /* modified protection logic, */ |
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|
561 /* resulting in version 1.1 */ |
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|
562 /* */ |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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|
563 /* 03-18-1994 Verified version 1.1 */ |
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|
564 /* */ |
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|
565 /*************************************************************************/ |
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|
566 UNSIGNED TCS_Change_Time_Slice(NU_TASK *task_ptr, UNSIGNED time_slice) |
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|
567 { |
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diff
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|
568 |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
569 TC_TCB *task; /* Task control block ptr */ |
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|
570 UNSIGNED old_time_slice; /* Old time slice value */ |
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|
571 NU_SUPERV_USER_VARIABLES |
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|
572 |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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diff
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|
573 /* Switch to supervisor mode */ |
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|
574 NU_SUPERVISOR_MODE(); |
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|
575 |
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|
576 /* Move input task control block pointer into internal pointer. */ |
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|
577 task = (TC_TCB *) task_ptr; |
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|
578 |
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|
579 |
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|
580 #ifdef NU_ENABLE_STACK_CHECK |
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parents:
diff
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|
581 |
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diff
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|
582 /* Call stack checking function to check for an overflow condition. */ |
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diff
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|
583 TCT_Check_Stack(); |
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parents:
diff
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|
584 |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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diff
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|
585 #endif |
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|
586 |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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|
587 #ifdef NU_ENABLE_HISTORY |
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diff
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|
588 |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
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|
589 /* Make an entry that corresponds to this function in the system history |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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diff
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|
590 log. */ |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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|
591 HIC_Make_History_Entry(NU_CHANGE_TIME_SLICE_ID, (UNSIGNED) task, |
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|
592 (UNSIGNED) time_slice, (UNSIGNED) 0); |
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parents:
diff
changeset
|
593 |
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diff
changeset
|
594 #endif |
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parents:
diff
changeset
|
595 |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
596 /* Protect the scheduling information. */ |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
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|
597 TCT_Protect(&TCD_System_Protect); |
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diff
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|
598 |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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diff
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|
599 /* Save the old time slice value. */ |
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|
600 old_time_slice = task -> tc_time_slice; |
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|
601 |
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diff
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|
602 /* Store the new time slice value. */ |
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|
603 task -> tc_time_slice = time_slice; |
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parents:
diff
changeset
|
604 task -> tc_cur_time_slice = time_slice; |
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diff
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|
605 |
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parents:
diff
changeset
|
606 /* Bug fix. Let the system know we have started a new time slice */ |
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|
607 TMD_Time_Slice_State = TM_ACTIVE; |
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diff
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|
608 |
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diff
changeset
|
609 #ifdef INCLUDE_PROVIEW |
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|
610 _RTProf_DumpTask(task,RT_PROF_CHANGE_TIME_SLICE); |
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|
611 #endif |
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diff
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|
612 /* Release protection of information. */ |
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parents:
diff
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|
613 TCT_Unprotect(); |
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parents:
diff
changeset
|
614 |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
615 /* Return to user mode */ |
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parents:
diff
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|
616 NU_USER_MODE(); |
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parents:
diff
changeset
|
617 |
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|
618 /* Return the previous time slice value. */ |
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|
619 return(old_time_slice); |
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parents:
diff
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|
620 } |
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diff
changeset
|
621 |
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diff
changeset
|
622 |
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diff
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|
623 /*************************************************************************/ |
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diff
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|
624 /* */ |
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diff
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|
625 /* FUNCTION */ |
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parents:
diff
changeset
|
626 /* */ |
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diff
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|
627 /* TCS_Control_Signals */ |
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parents:
diff
changeset
|
628 /* */ |
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parents:
diff
changeset
|
629 /* DESCRIPTION */ |
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parents:
diff
changeset
|
630 /* */ |
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diff
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|
631 /* This function enables the specified signals and returns the */ |
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parents:
diff
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|
632 /* previous enable signal value back to the caller. If a newly */ |
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diff
changeset
|
633 /* enabled signal is present and a signal handler is registered, */ |
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|
634 /* signal handling is started. */ |
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parents:
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|
635 /* */ |
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parents:
diff
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|
636 /* CALLED BY */ |
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parents:
diff
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|
637 /* */ |
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parents:
diff
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|
638 /* Application */ |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
639 /* TCSE_Control_Signals Error checking shell */ |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
640 /* */ |
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parents:
diff
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|
641 /* CALLS */ |
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parents:
diff
changeset
|
642 /* */ |
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parents:
diff
changeset
|
643 /* [HIC_Make_History_Entry] Make entry in history log */ |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
644 /* TCC_Signal_Shell Task signal execution */ |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
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|
645 /* [TCT_Check_Stack] Stack checking function */ |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
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|
646 /* TCT_Protect Protect against other access */ |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
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|
647 /* TCT_Unprotect Release protection */ |
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parents:
diff
changeset
|
648 /* */ |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
649 /* INPUTS */ |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
650 /* */ |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
651 /* enable_signal_mask Enable signal mask */ |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
652 /* */ |
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parents:
diff
changeset
|
653 /* OUTPUTS */ |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
654 /* */ |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
655 /* Previous signal enable mask */ |
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parents:
diff
changeset
|
656 /* */ |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
657 /* HISTORY */ |
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parents:
diff
changeset
|
658 /* */ |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
659 /* DATE REMARKS */ |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
660 /* */ |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
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|
661 /* 03-01-1993 Created initial version 1.0 */ |
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parents:
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|
662 /* 04-19-1993 Verified version 1.0 */ |
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parents:
diff
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|
663 /* 05-15-1993 Corrected problem with a comment */ |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
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|
664 /* 05-15-1993 Verified comment repair */ |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
665 /* 03-01-1994 Added register optimizations, */ |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
666 /* modified protection logic, */ |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
667 /* resulting in version 1.1 */ |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
668 /* */ |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
669 /* 03-18-1994 Verified version 1.1 */ |
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parents:
diff
changeset
|
670 /* */ |
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parents:
diff
changeset
|
671 /*************************************************************************/ |
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parents:
diff
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|
672 UNSIGNED TCS_Control_Signals(UNSIGNED enable_signal_mask) |
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parents:
diff
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|
673 { |
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parents:
diff
changeset
|
674 |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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changeset
|
675 R1 TC_TCB *task; /* Task pointer */ |
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parents:
diff
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|
676 UNSIGNED old_enable_mask; /* Old enable signal mask */ |
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|
677 NU_SUPERV_USER_VARIABLES |
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parents:
diff
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|
678 |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
679 /* Switch to supervisor mode */ |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
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|
680 NU_SUPERVISOR_MODE(); |
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parents:
diff
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|
681 |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
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|
682 #ifdef NU_ENABLE_STACK_CHECK |
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parents:
diff
changeset
|
683 |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
684 /* Call stack checking function to check for an overflow condition. */ |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
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|
685 TCT_Check_Stack(); |
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parents:
diff
changeset
|
686 |
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parents:
diff
changeset
|
687 #endif |
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parents:
diff
changeset
|
688 |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
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|
689 #ifdef NU_ENABLE_HISTORY |
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parents:
diff
changeset
|
690 |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
691 /* Make an entry that corresponds to this function in the system history |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
692 log. */ |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
693 HIC_Make_History_Entry(NU_CONTROL_SIGNALS_ID,(UNSIGNED) enable_signal_mask, |
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parents:
diff
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|
694 (UNSIGNED) 0, (UNSIGNED) 0); |
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parents:
diff
changeset
|
695 |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
696 #endif |
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parents:
diff
changeset
|
697 |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
698 /* Pickup the task pointer. */ |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
699 task = (TC_TCB *) TCD_Current_Thread; |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
700 |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
701 /* Protect against simultaneous access. */ |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
702 TCT_Protect(&TCD_System_Protect); |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
703 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
704 /* Pickup the old signal mask. */ |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
705 old_enable_mask = task -> tc_enabled_signals; |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
706 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
707 /* Put the new mask in. */ |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
708 task -> tc_enabled_signals = enable_signal_mask; |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
709 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
710 /* Now, determine if the signal handler needs to be invoked. */ |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
711 if ((enable_signal_mask & task -> tc_signals) && |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
712 (!task -> tc_signal_active) && |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
713 (task -> tc_signal_handler)) |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
714 { |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
715 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
716 /* Signal processing is required. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
717 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
718 /* Indicate that signal processing is in progress. */ |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
719 task -> tc_signal_active = NU_TRUE; |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
720 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
721 /* Clear the saved stack pointer to indicate that this is an |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
722 in line signal handler call. */ |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
723 task -> tc_saved_stack_ptr = NU_NULL; |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
724 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
725 #ifdef INCLUDE_PROVIEW |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
726 _RTProf_DumpTask(task,RT_PROF_CONTROL_SIGNALS); |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
727 #endif |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
728 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
729 /* Release protection from multiple access. */ |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
730 TCT_Unprotect(); |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
731 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
732 /* Call the signal handling shell. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
733 TCC_Signal_Shell(); |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
734 } |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
735 else |
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beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
736 { |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
737 |
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beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
738 #ifdef INCLUDE_PROVIEW |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
739 _RTProf_DumpTask(task,RT_PROF_CONTROL_SIGNALS); |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
740 #endif |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
741 |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
742 /* Release protection. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
743 TCT_Unprotect(); |
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beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
744 } |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
745 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
746 /* Return to user mode */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
747 NU_USER_MODE(); |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
748 |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
749 /* Return the old enable mask. */ |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
750 return(old_enable_mask); |
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beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
751 } |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
752 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
753 |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
754 /*************************************************************************/ |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
755 /* */ |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
756 /* FUNCTION */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
757 /* */ |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
758 /* TCS_Receive_Signals */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
759 /* */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
760 /* DESCRIPTION */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
761 /* */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
762 /* This function returns the current signals back to the caller. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
763 /* Note that the signals are cleared automatically. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
764 /* */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
765 /* CALLED BY */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
766 /* */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
767 /* Application */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
768 /* TCSE_Receive_Signals Error checking shell */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
769 /* */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
770 /* CALLS */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
771 /* */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
772 /* [HIC_Make_History_Entry] Make entry in history log */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
773 /* [TCT_Check_Stack] Stack checking function */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
774 /* TCT_Protect Protect against other access */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
775 /* TCT_Unprotect Release protection */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
776 /* */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
777 /* INPUTS */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
778 /* */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
779 /* None */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
780 /* */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
781 /* OUTPUTS */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
782 /* */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
783 /* Current signals */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
784 /* */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
785 /* HISTORY */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
786 /* */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
787 /* DATE REMARKS */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
788 /* */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
789 /* 03-01-1993 Created initial version 1.0 */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
790 /* 04-19-1993 Verified version 1.0 */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
791 /* 03-01-1994 Modified protection logic, */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
792 /* resulting in version 1.1 */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
793 /* */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
794 /* 03-18-1994 Verified version 1.1 */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
795 /* */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
796 /*************************************************************************/ |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
797 UNSIGNED TCS_Receive_Signals(VOID) |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
798 { |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
799 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
800 TC_TCB *task; /* Task pointer */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
801 UNSIGNED signals; /* Current signals */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
802 NU_SUPERV_USER_VARIABLES |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
803 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
804 /* Switch to supervisor mode */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
805 NU_SUPERVISOR_MODE(); |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
806 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
807 #ifdef NU_ENABLE_STACK_CHECK |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
808 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
809 /* Call stack checking function to check for an overflow condition. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
810 TCT_Check_Stack(); |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
811 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
812 #endif |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
813 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
814 #ifdef NU_ENABLE_HISTORY |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
815 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
816 /* Make an entry that corresponds to this function in the system history |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
817 log. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
818 HIC_Make_History_Entry(NU_RECEIVE_SIGNALS_ID, (UNSIGNED) 0, |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
819 (UNSIGNED) 0, (UNSIGNED) 0); |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
820 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
821 #endif |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
822 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
823 /* Pickup the task pointer. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
824 task = (TC_TCB *) TCD_Current_Thread; |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
825 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
826 /* Protect against simultaneous access. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
827 TCT_Protect(&TCD_System_Protect); |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
828 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
829 /* Pickup the current events. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
830 signals = task -> tc_signals; |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
831 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
832 /* Clear the current signals. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
833 task -> tc_signals = 0; |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
834 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
835 #ifdef INCLUDE_PROVIEW |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
836 _RTProf_DumpTask(task,RT_PROF_RECEIVE_SIGNALS); |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
837 #endif |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
838 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
839 /* Release protection. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
840 TCT_Unprotect(); |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
841 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
842 /* Return to user mode */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
843 NU_USER_MODE(); |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
844 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
845 /* Return the signals to the caller. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
846 return(signals); |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
847 } |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
848 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
849 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
850 /*************************************************************************/ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
851 /* */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
852 /* FUNCTION */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
853 /* */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
854 /* TCS_Register_Signal_Handler */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
855 /* */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
856 /* DESCRIPTION */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
857 /* */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
858 /* This function registers a signal handler for the calling task. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
859 /* Note that if an enabled signal is present and this is the first */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
860 /* registered signal handler call, the signal is processed */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
861 /* immediately. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
862 /* */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
863 /* CALLED BY */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
864 /* */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
865 /* Application */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
866 /* TCSE_Register_Signal_Handler Error checking shell */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
867 /* */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
868 /* CALLS */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
869 /* */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
870 /* [HIC_Make_History_Entry] Make entry in history log */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
871 /* TCC_Signal_Shell Signal execution shell */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
872 /* [TCT_Check_Stack] Stack checking function */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
873 /* TCT_Protect Protect against other access */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
874 /* TCT_Unprotect Release protection */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
875 /* */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
876 /* INPUTS */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
877 /* */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
878 /* signal_handler Signal execution shell */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
879 /* */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
880 /* OUTPUTS */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
881 /* */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
882 /* NU_SUCCESS */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
883 /* */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
884 /* HISTORY */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
885 /* */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
886 /* DATE REMARKS */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
887 /* */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
888 /* 03-01-1993 Created initial version 1.0 */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
889 /* 04-19-1993 Verified version 1.0 */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
890 /* 05-15-1993 Corrected problem with a comment */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
891 /* 05-15-1993 Verified comment repair */ |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
892 /* 03-01-1994 Added register optimizations, */ |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
893 /* modified protection logic, */ |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
894 /* resulting in version 1.1 */ |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
895 /* */ |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
896 /* 03-18-1994 Verified version 1.1 */ |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
897 /* */ |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
898 /*************************************************************************/ |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
899 STATUS TCS_Register_Signal_Handler(VOID (*signal_handler)(UNSIGNED)) |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
900 { |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
901 |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
902 R1 TC_TCB *task; /* Task pointer */ |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
903 NU_SUPERV_USER_VARIABLES |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
904 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
905 /* Switch to supervisor mode */ |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
906 NU_SUPERVISOR_MODE(); |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
907 |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
908 #ifdef NU_ENABLE_STACK_CHECK |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
909 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
910 /* Call stack checking function to check for an overflow condition. */ |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
911 TCT_Check_Stack(); |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
912 |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
913 #endif |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
914 |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
915 #ifdef NU_ENABLE_HISTORY |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
916 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
917 /* Make an entry that corresponds to this function in the system history |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
918 log. */ |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
919 HIC_Make_History_Entry(NU_REGISTER_SIGNAL_HANDLER_ID, |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
920 (UNSIGNED) signal_handler, (UNSIGNED) 0, (UNSIGNED) 0); |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
921 |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
922 #endif |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
923 |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
924 /* Pickup the task pointer. */ |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
925 task = (TC_TCB *) TCD_Current_Thread; |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
926 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
927 /* Protect against simultaneous access. */ |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
928 TCT_Protect(&TCD_System_Protect); |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
929 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
930 /* Put the new signal handler in. */ |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
931 task -> tc_signal_handler = signal_handler; |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
932 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
933 /* Now, determine if the signal handler needs to be invoked. */ |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
934 if ((task -> tc_enabled_signals & task -> tc_signals) && |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
935 (!task -> tc_signal_active) && |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
936 (task -> tc_signal_handler)) |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
937 { |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
938 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
939 /* Signal processing is required. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
940 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
941 /* Indicate that signal processing is in progress. */ |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
942 task -> tc_signal_active = NU_TRUE; |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
943 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
944 /* Clear the saved stack pointer to indicate that this is an |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
945 in line signal handler call. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
946 task -> tc_saved_stack_ptr = NU_NULL; |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
947 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
948 /* Release protection from multiple access. */ |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
949 TCT_Unprotect(); |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
950 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
951 /* Call the signal handling shell. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
952 TCC_Signal_Shell(); |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
953 } |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
954 else |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
955 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
956 /* Release protection. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
957 TCT_Unprotect(); |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
958 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
959 /* Return to user mode */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
960 NU_USER_MODE(); |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
961 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
962 /* Return success. */ |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
963 return(NU_SUCCESS); |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
964 } |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
965 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
966 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
967 /*************************************************************************/ |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
968 /* */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
969 /* FUNCTION */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
970 /* */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
971 /* TCS_Send_Signals */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
972 /* */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
973 /* DESCRIPTION */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
974 /* */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
975 /* This function sends the specified task the specified signals. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
976 /* If enabled, the specified task is setup in order to process the */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
977 /* signals. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
978 /* */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
979 /* CALLED BY */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
980 /* */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
981 /* Application */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
982 /* TCSE_Send_Signals Error checking shell */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
983 /* */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
984 /* CALLS */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
985 /* */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
986 /* [HIC_Make_History_Entry] Make entry in history log */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
987 /* TCC_Resume_Task Resume task that is suspended*/ |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
988 /* TCC_Signal_Shell Signal execution shell */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
989 /* TCT_Build_Signal_Frame Build a signal frame */ |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
990 /* [TCT_Check_Stack] Stack checking function */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
991 /* TCT_Control_To_System Control to system */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
992 /* TCT_Protect Protect against other access */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
993 /* TCT_Unprotect Release protection */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
994 /* */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
995 /* INPUTS */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
996 /* */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
997 /* task_ptr Task pointer */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
998 /* signals Signals to send to the task */ |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
999 /* */ |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1000 /* OUTPUTS */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1001 /* */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1002 /* NU_SUCCESS */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1003 /* */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1004 /* HISTORY */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1005 /* */ |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1006 /* DATE REMARKS */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1007 /* */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1008 /* 03-01-1993 Created initial version 1.0 */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1009 /* 04-19-1993 Verified version 1.0 */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1010 /* 03-01-1994 Modified function interface, */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1011 /* added register optimizations, */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1012 /* modified protection logic, */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1013 /* resulting in version 1.1 */ |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1014 /* */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1015 /* 03-18-1994 Verified version 1.1 */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1016 /* 04-04-1996 On line 995, changed tc_signals */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1017 /* to tc_enabled_signals, */ |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1018 /* resulting in version 1.1+ */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1019 /* (spr 107) */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1020 /* */ |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1021 /*************************************************************************/ |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1022 STATUS TCS_Send_Signals(NU_TASK *task_ptr, UNSIGNED signals) |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1023 { |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1024 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1025 R1 TC_TCB *task; /* Task control block ptr */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1026 NU_SUPERV_USER_VARIABLES |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1027 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1028 /* Switch to supervisor mode */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1029 NU_SUPERVISOR_MODE(); |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1030 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1031 /* Move input task control block pointer into internal pointer. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1032 task = (TC_TCB *) task_ptr; |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1033 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1034 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1035 #ifdef NU_ENABLE_STACK_CHECK |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1036 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1037 /* Call stack checking function to check for an overflow condition. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1038 TCT_Check_Stack(); |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1039 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1040 #endif |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1041 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1042 #ifdef NU_ENABLE_HISTORY |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1043 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1044 /* Make an entry that corresponds to this function in the system history |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1045 log. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1046 HIC_Make_History_Entry(NU_SEND_SIGNALS_ID, (UNSIGNED) signals, |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1047 (UNSIGNED) 0, (UNSIGNED) 0); |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1048 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1049 #endif |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1050 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1051 /* Protect against simultaneous access. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1052 TCT_Protect(&TCD_System_Protect); |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1053 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1054 /* Or the new signals into the current signals. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1055 task -> tc_signals = task -> tc_signals | signals; |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1056 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1057 #ifdef INCLUDE_PROVIEW |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1058 _RTProf_DumpTask(task,RT_PROF_SEND_SIGNALS); |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1059 #endif |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1060 /* Now, determine if the signal handler needs to be invoked. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1061 if ((task -> tc_signals & task -> tc_enabled_signals) && |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1062 (!task -> tc_signal_active) && |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1063 (task -> tc_status != NU_TERMINATED) && |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1064 (task -> tc_status != NU_FINISHED) && |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1065 (task -> tc_signal_handler)) |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1066 { |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1067 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1068 /* Indicate that signal processing is in progress. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1069 task -> tc_signal_active = NU_TRUE; |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1070 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1071 /* Signal processing is required. Determine if the task is sending |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1072 signals to itself or if the calling thread is not the current |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1073 task. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1074 if (task == (TC_TCB *) TCD_Current_Thread) |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1075 { |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1076 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1077 /* Task sending signals to itself. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1078 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1079 /* Clear the saved stack pointer to indicate that this is an |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1080 in line signal handler call. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1081 task -> tc_saved_stack_ptr = NU_NULL; |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1082 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1083 /* Release protection from multiple access. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1084 TCT_Unprotect(); |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1085 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1086 /* Call the signal handling shell. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1087 TCC_Signal_Shell(); |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1088 } |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1089 else |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1090 { |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1091 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1092 /* Target task must be prepared to receive the signals. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1093 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1094 /* First, insure that the target task is not in a protected |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1095 area. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1096 do |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1097 { |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1098 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1099 /* Check for protection. Remember that protection is still |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1100 in effect. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1101 if (task -> tc_current_protect) |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1102 { |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1103 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1104 /* Yes, target task is in a protected mode. Release |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1105 the protection on the scheduling list and transfer |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1106 control briefly to the target task. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1107 TCT_Unprotect(); |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1108 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1109 /* Switch to the protected task and wait until the |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1110 task is not protected. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1111 TCT_Protect_Switch(task); |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1112 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1113 /* Restore protection on the scheduling structures. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1114 TCT_Protect(&TCD_System_Protect); |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1115 } |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1116 } while (task -> tc_current_protect); |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1117 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1118 /* Copy the current status and stack pointer to the signal save |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1119 areas. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1120 task -> tc_saved_status = task -> tc_status; |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1121 task -> tc_saved_stack_ptr = task -> tc_stack_pointer; |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1122 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1123 /* Build a stack frame for the signal handling shell function. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1124 TCT_Build_Signal_Frame(task); |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1125 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1126 /* Determine if the target task is currently suspended. If it is |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1127 suspended for any other reason than a pure suspend, resume |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1128 it. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1129 if ((task -> tc_status != NU_READY) && |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1130 (task -> tc_status != NU_PURE_SUSPEND)) |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1131 { |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1132 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1133 /* Resume the target task and check for preemption. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1134 if (TCC_Resume_Task(task_ptr, task -> tc_status)) |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1135 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1136 /* Preemption needs to take place. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1137 TCT_Control_To_System(); |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1138 } |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1139 } |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1140 } |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1141 |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1142 /* Release protection, no signals are currently enabled. */ |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
1143 TCT_Unprotect(); |
947b1f473960
beginning of nuc-fw
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
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1144 |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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1145 /* Return to user mode */ |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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1146 NU_USER_MODE(); |
947b1f473960
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
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1147 |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
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1148 /* Return a successful status. */ |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
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1149 return(NU_SUCCESS); |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
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1150 } |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
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1151 |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
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1152 |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
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1153 |
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Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
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changeset
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1154 |