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annotate packages/kernel/current/tests/except1.cxx @ 70:c5536bad4c24 ecos-sw-2000-02-11

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Merge from eCos master repository on 2000-02-11-15:46:40-GMT
author jlarmour
date Fri, 11 Feb 2000 16:47:32 +0000
parents bf00f99aec69
children 59d97b6ba612
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1 //=================================================================
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2 //
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3 // except1.cxx
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4 //
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5 // Exception test 1
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6 //
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7 //=================================================================
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8 //####COPYRIGHTBEGIN####
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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 //
0
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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 #include <pkgconf/kernel.h>
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41
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42 #include <cyg/infra/testcase.h>
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43
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44 #ifdef CYGPKG_KERNEL_EXCEPTIONS
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45
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46 #include <cyg/kernel/sched.hxx> // Cyg_Scheduler::start()
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47 #include <cyg/kernel/thread.hxx> // Cyg_Thread
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48 #include <cyg/kernel/intr.hxx> // cyg_VSR
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49
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50 #include <cyg/hal/hal_intr.h> // exception ranges
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51
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52 #include <cyg/kernel/sched.inl>
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53 #include <cyg/kernel/thread.inl>
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54
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55 #define NTHREADS 1
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56 #include "testaux.hxx"
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57
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58 static cyg_exception_handler handler0;
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59 static int d0;
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60
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61 static void handler0(CYG_ADDRWORD data, cyg_code number, CYG_ADDRWORD info)
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62 {
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63 CYG_TEST_INFO("handler 0 called");
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64
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65 CYG_TEST_CHECK((CYG_ADDRWORD)123 == data, "handler given wrong data");
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66
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67 // ignore machine specific stuff
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68 CYG_UNUSED_PARAM(cyg_code, number);
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69 CYG_UNUSED_PARAM(CYG_ADDRWORD, info);
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70
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71 CYG_TEST_PASS_FINISH("Except 1 OK");
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72 }
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73
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74 static void handler1(CYG_ADDRWORD data, cyg_code number, CYG_ADDRWORD info)
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75 {
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76 CYG_TEST_INFO("handler 1 called");
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77
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78 CYG_TEST_CHECK((CYG_ADDRWORD)&d0 == data, "handler given wrong data");
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79
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80 #ifdef CYGSEM_KERNEL_EXCEPTIONS_DECODE
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81 CYG_TEST_CHECK(number == CYGNUM_HAL_EXCEPTION_MAX, "handler given wrong number");
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82 #else
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83 CYG_UNUSED_PARAM(cyg_code, number);
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84 #endif
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85
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86 CYG_TEST_CHECK((CYG_ADDRWORD)99 == info, "handler given wrong info");
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87 }
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88
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89
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90 // The following function attempts to cause an exception in various
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91 // hacky ways. It is machine dependent what exception is generated.
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92 // It does reads rather than writes hoping not to corrupt anything
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93 // important.
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94 void cause_exception(void)
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95 {
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96 int x;
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97 unsigned int p=0;
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98
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99 do {
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100 x=*(volatile int *)(p-1)/p;
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101 p+=0x100000;
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102 } while(p != 0);
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103 }
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104
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105 static void entry0( CYG_ADDRWORD data )
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106 {
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107 cyg_code n;
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108 cyg_exception_handler *old_handler, *old_handler1;
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109 CYG_ADDRWORD old_data, old_data1;
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110 Cyg_Thread *p=Cyg_Thread::self();
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111
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112 CYG_UNUSED_PARAM(CYG_ADDRESS, data);
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113
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114 p->register_exception(
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115 CYGNUM_HAL_EXCEPTION_MAX,
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116 &handler1,
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117 (CYG_ADDRWORD)&d0,
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118 &old_handler,
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119 &old_data);
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120
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121 p->register_exception(
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122 CYGNUM_HAL_EXCEPTION_MAX,
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123 &handler1,
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124 (CYG_ADDRWORD)&d0,
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125 &old_handler1,
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126 &old_data1);
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127
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128 CYG_TEST_CHECK(old_handler1 == &handler1,
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129 "register exception: old_handler not the one previously registered");
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130 CYG_TEST_CHECK(old_data1 == (CYG_ADDRWORD)&d0,
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131 "register exception: old_data not those previously registered");
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132
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133 p->deliver_exception(CYGNUM_HAL_EXCEPTION_MAX, (CYG_ADDRWORD)99);
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134
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135 CYG_TEST_INFO("handler 1 returned");
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136
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137 p->deregister_exception(CYGNUM_HAL_EXCEPTION_MAX);
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138 p->deregister_exception(CYGNUM_HAL_EXCEPTION_MAX);
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139
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140 #if 0
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141 #elif defined(CYGPKG_HAL_POWERPC_SIM)
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142 // The exception generated by the SIM is not recognized by GDB.
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143 // PR 19945 workaround.
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144 CYG_TEST_NA("Not applicable to PowerPC SIM");
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145 #elif defined(CYGPKG_HAL_I386_LINUX)
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146 // We can't catch segmentation violation exceptions on Linux.
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147 CYG_TEST_NA("Not applicable to synthetic target");
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148 #endif
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149
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150 for(n = CYGNUM_HAL_EXCEPTION_MIN; n <= CYGNUM_HAL_EXCEPTION_MAX; n++) {
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151 p->register_exception(
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152 n,
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153 handler0,
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154 (CYG_ADDRWORD)123,
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155 &old_handler1,
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156 &old_data1);
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157 }
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158
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159 CYG_TEST_PASS("Attempting to provoke exception");
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160
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161 cause_exception();
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162
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163 CYG_TEST_FAIL_FINISH("Couldn't cause exception");
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164 }
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165
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166 #ifdef CYG_HAL_MIPS_TX39_JMR3904
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167
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168 externC cyg_VSR __default_exception_vsr;
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169 cyg_VSR *old_vsr;
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170
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171 #endif
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172
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173 void except0_main( void )
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174 {
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175 // Use CYG_TEST_GDBCMD _before_ CYG_TEST_INIT()
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176 CYG_TEST_GDBCMD("handle SIGBUS nostop");
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177 CYG_TEST_GDBCMD("handle SIGSEGV nostop");
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178
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179 CYG_TEST_INIT();
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180
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181 #ifdef HAL_VSR_SET_TO_ECOS_HANDLER
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182 // Reclaim the VSR off CygMon possibly
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183 #ifdef CYGNUM_HAL_EXCEPTION_DATA_ACCESS
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184 HAL_VSR_SET_TO_ECOS_HANDLER( CYGNUM_HAL_EXCEPTION_DATA_ACCESS, NULL );
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185 #endif
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186 #ifdef CYGNUM_HAL_EXCEPTION_DATA_TLBMISS_ACCESS
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187 HAL_VSR_SET_TO_ECOS_HANDLER( CYGNUM_HAL_EXCEPTION_DATA_TLBMISS_ACCESS, NULL );
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188 #endif
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189 #ifdef CYGNUM_HAL_EXCEPTION_DATA_UNALIGNED_ACCESS
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190 HAL_VSR_SET_TO_ECOS_HANDLER( CYGNUM_HAL_EXCEPTION_DATA_UNALIGNED_ACCESS, NULL );
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191 #endif
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192 #ifdef CYGNUM_HAL_EXCEPTION_ILLEGAL_INSTRUCTION
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193 HAL_VSR_SET_TO_ECOS_HANDLER( CYGNUM_HAL_EXCEPTION_ILLEGAL_INSTRUCTION, NULL );
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194 #endif
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195 #endif
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196
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197 new_thread(entry0, 0);
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198
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199 Cyg_Scheduler::start();
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200
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201 CYG_TEST_FAIL_FINISH("Not reached");
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202 }
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203 externC void
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204 cyg_start( void )
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205 {
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206 except0_main();
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207 }
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208 #else // def CYGPKG_KERNEL_EXCEPTIONS
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209 externC void
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210 cyg_start( void )
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211 {
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212 CYG_TEST_INIT();
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213 CYG_TEST_NA("Exceptions disabled");
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214 }
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215 #endif // def CYGPKG_KERNEL_EXCEPTIONS
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216
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217 // EOF except1.cxx