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annotate packages/kernel/current/tests/kexcept1.c @ 66:bf00f99aec69 ecos-sw-2000-02-02

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Merge from eCos master repository on 2000-02-02-19:16:44-GMT
author jlarmour
date Wed, 02 Feb 2000 19:57:02 +0000
parents c38311975d4f
children c5536bad4c24
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1 /*=================================================================
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2 //
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3 // kexcept1.cxx
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4 //
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5 // Kernel C API Exception test 1
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6 //
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7 //=================================================================
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8 //####COPYRIGHTBEGIN####
64
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9 //
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10 // -------------------------------------------
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11 // The contents of this file are subject to the Red Hat eCos Public License
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12 // Version 1.1 (the "License"); you may not use this file except in
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13 // compliance with the License. You may obtain a copy of the License at
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14 // http://www.redhat.com/
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15 //
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16 // Software distributed under the License is distributed on an "AS IS"
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17 // basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
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18 // License for the specific language governing rights and limitations under
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19 // the License.
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20 //
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21 // The Original Code is eCos - Embedded Configurable Operating System,
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22 // released September 30, 1998.
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23 //
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24 // The Initial Developer of the Original Code is Red Hat.
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25 // Portions created by Red Hat are
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26 // Copyright (C) 1998, 1999, 2000 Red Hat, Inc.
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27 // All Rights Reserved.
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28 // -------------------------------------------
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29 //
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30 //####COPYRIGHTEND####
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31 //=================================================================
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32 //#####DESCRIPTIONBEGIN####
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33 //
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34 // Author(s): dsm
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35 // Contributors: dsm, jlarmour
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36 // Date: 1999-02-16
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37 // Description: Test basic exception functionality
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38 //####DESCRIPTIONEND####
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39 */
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40
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41 #include <cyg/hal/hal_arch.h> // CYGNUM_HAL_STACK_SIZE_TYPICAL
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42
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43 #include <cyg/kernel/kapi.h>
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44
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45 #include <cyg/infra/testcase.h>
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46
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47 #ifdef CYGPKG_KERNEL_EXCEPTIONS
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48
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49 #ifdef CYGFUN_KERNEL_API_C
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50
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51 #include <cyg/hal/hal_intr.h> // exception ranges
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52
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53 #include "testaux.h"
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54
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55 #define NTHREADS 1
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56 #define STACKSIZE CYGNUM_HAL_STACK_SIZE_TYPICAL
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57
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58 static cyg_handle_t thread[NTHREADS];
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59
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60 static cyg_thread thread_obj[NTHREADS];
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61 static char stack[NTHREADS][STACKSIZE];
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62
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63
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64 static cyg_exception_handler_t handler0;
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65 static int d0;
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66
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67 static void handler0(cyg_addrword_t data, cyg_code_t number, cyg_addrword_t info)
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68 {
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69 CYG_TEST_INFO("handler 0 called");
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70
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71 CYG_TEST_CHECK((cyg_addrword_t)123 == data, "handler given wrong data");
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72
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73 // ignore machine specific stuff
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74 CYG_UNUSED_PARAM(cyg_code_t, number);
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75 CYG_UNUSED_PARAM(cyg_addrword_t, info);
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76
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77 CYG_TEST_PASS_FINISH("Except 1 OK");
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78 }
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79
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80 static void handler1(cyg_addrword_t data, cyg_code_t number, cyg_addrword_t info)
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81 {
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82 CYG_TEST_INFO("handler 1 called");
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83
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84 CYG_TEST_CHECK((cyg_addrword_t)&d0 == data, "handler given wrong data");
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85
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86 #ifdef CYGSEM_KERNEL_EXCEPTIONS_DECODE
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87 CYG_TEST_CHECK(number == CYGNUM_HAL_EXCEPTION_MAX, "handler given wrong number");
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88 #else
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89 CYG_UNUSED_PARAM(cyg_code_t, number);
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90 #endif
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91
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92 CYG_TEST_CHECK((cyg_addrword_t)99 == info, "handler given wrong info");
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93 }
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94
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95
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96 // The following function attempts to cause an exception in various
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97 // hacky ways. It is machine dependent what exception is generated.
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98 // It does reads rather than writes hoping not to corrupt anything
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99 // important.
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100 void cause_exception(void)
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101 {
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102 int x;
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103 unsigned int p=0;
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104
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105 do {
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106 x=*(volatile int *)(p-1)/p;
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107 p+=0x100000;
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108 } while(p != 0);
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109 }
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110
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111 static void entry0( CYG_ADDRWORD data )
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112 {
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113 cyg_code_t n;
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114 cyg_exception_handler_t *old_handler, *old_handler1;
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115 cyg_addrword_t old_data, old_data1;
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116
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117 CYG_UNUSED_PARAM(CYG_ADDRESS, data);
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118
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119 cyg_exception_set_handler(
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120 CYGNUM_HAL_EXCEPTION_MAX,
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121 &handler1,
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122 (cyg_addrword_t)&d0,
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123 &old_handler,
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124 &old_data);
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125
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126 cyg_exception_set_handler(
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127 CYGNUM_HAL_EXCEPTION_MAX,
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128 &handler1,
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129 (cyg_addrword_t)&d0,
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130 &old_handler1,
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131 &old_data1);
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132
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133 CYG_TEST_CHECK(old_handler1 == &handler1,
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134 "register exception: old_handler not the one previously registered");
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135 CYG_TEST_CHECK(old_data1 == (cyg_addrword_t)&d0,
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136 "register exception: old_data not those previously registered");
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137
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138 cyg_exception_call_handler(
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139 cyg_thread_self(),
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140 CYGNUM_HAL_EXCEPTION_MAX,
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141 (cyg_addrword_t)99);
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142
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143 CYG_TEST_INFO("handler 1 returned");
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144
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145 cyg_exception_clear_handler(CYGNUM_HAL_EXCEPTION_MAX);
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146 cyg_exception_clear_handler(CYGNUM_HAL_EXCEPTION_MAX);
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147
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148 #if 0
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149 #elif defined(CYGPKG_HAL_POWERPC_SIM)
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150 // The exception generated by the SIM is not recognized by GDB.
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151 // PR 19945 workaround.
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152 CYG_TEST_NA("Not applicable to PowerPC SIM");
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153 #elif defined(CYGPKG_HAL_I386_LINUX)
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154 // We can't catch segmentation violation exceptions on Linux.
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155 CYG_TEST_NA("Not applicable to synthetic target");
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156 #endif
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157
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158 for(n = CYGNUM_HAL_EXCEPTION_MIN; n <= CYGNUM_HAL_EXCEPTION_MAX; n++) {
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159 cyg_exception_set_handler(
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160 n,
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161 handler0,
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162 (cyg_addrword_t)123,
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163 &old_handler1,
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164 &old_data1);
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165 }
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166
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167 CYG_TEST_PASS("Attempting to provoke exception");
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168
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169 cause_exception();
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170
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171 CYG_TEST_FAIL_FINISH("Couldn't cause exception");
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172 }
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173
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174 #ifdef CYG_HAL_MIPS_TX39_JMR3904
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175
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176 extern void __default_exception_vsr(void);
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177
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178 #endif
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179
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180 void except0_main( void )
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181 {
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182 // Use CYG_TEST_GDBCMD _before_ CYG_TEST_INIT()
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183 CYG_TEST_GDBCMD("handle SIGBUS nostop");
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184 CYG_TEST_GDBCMD("handle SIGSEGV nostop");
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185
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186 CYG_TEST_INIT();
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187
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188 #ifdef HAL_VSR_SET_TO_ECOS_HANDLER
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189 // Reclaim the VSR off CygMon possibly
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190 #ifdef CYGNUM_HAL_EXCEPTION_DATA_ACCESS
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191 HAL_VSR_SET_TO_ECOS_HANDLER( CYGNUM_HAL_EXCEPTION_DATA_ACCESS, NULL );
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192 #endif
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193 #ifdef CYGNUM_HAL_EXCEPTION_DATA_UNALIGNED_ACCESS
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194 HAL_VSR_SET_TO_ECOS_HANDLER( CYGNUM_HAL_EXCEPTION_DATA_UNALIGNED_ACCESS, NULL );
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195 #endif
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196 #ifdef CYGNUM_HAL_EXCEPTION_ILLEGAL_INSTRUCTION
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197 HAL_VSR_SET_TO_ECOS_HANDLER( CYGNUM_HAL_EXCEPTION_ILLEGAL_INSTRUCTION, NULL );
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198 #endif
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199 #endif
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200
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201 cyg_thread_create(4, entry0 , (cyg_addrword_t)0, "kexcept1",
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202 (void *)stack[0], STACKSIZE, &thread[0], &thread_obj[0]);
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203 cyg_thread_resume(thread[0]);
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204
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205 cyg_scheduler_start();
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206
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207 CYG_TEST_FAIL_FINISH("Not reached");
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208 }
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209
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210 externC void
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211 cyg_start( void )
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212 {
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213 except0_main();
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214 }
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215
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216 #else // def CYGFUN_KERNEL_API_C
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217 #define N_A_MSG "Kernel C API layer disabled"
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218 #endif // def CYGFUN_KERNEL_API_C
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219 #else // def CYGPKG_KERNEL_EXCEPTIONS
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220 #define N_A_MSG "Exceptions disabled"
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221 #endif // def CYGPKG_KERNEL_EXCEPTIONS
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222
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223 #ifdef N_A_MSG
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224 externC void
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225 cyg_start( void )
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226 {
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227 CYG_TEST_INIT();
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228 CYG_TEST_NA( N_A_MSG);
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229 }
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230 #endif // N_A_MSG
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231
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232 /* EOF kexcept1.c */