Mercurial > flash_v2
annotate packages/kernel/current/tests/except1.cxx @ 648:0c5540a10fcc
* tests/fptest.c: Changed to run for a constant time rather than a
constant number of iterations, with a shorter run time for
simulated targets.
| author | nickg |
|---|---|
| date | Wed, 19 Feb 2003 19:14:48 +0000 |
| parents | d2c90368aeef |
| children |
| rev | line source |
|---|---|
| 0 | 1 //================================================================= |
| 2 // | |
| 3 // except1.cxx | |
| 4 // | |
| 5 // Exception test 1 | |
| 6 // | |
| 7 //================================================================= | |
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8 //####ECOSGPLCOPYRIGHTBEGIN#### |
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9 // ------------------------------------------- |
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10 // This file is part of eCos, the Embedded Configurable Operating System. |
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11 // Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc. |
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12 // |
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13 // eCos is free software; you can redistribute it and/or modify it under |
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14 // the terms of the GNU General Public License as published by the Free |
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15 // Software Foundation; either version 2 or (at your option) any later version. |
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16 // |
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17 // eCos is distributed in the hope that it will be useful, but WITHOUT ANY |
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18 // WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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19 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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20 // for more details. |
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21 // |
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22 // You should have received a copy of the GNU General Public License along |
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23 // with eCos; if not, write to the Free Software Foundation, Inc., |
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24 // 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. |
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25 // |
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26 // As a special exception, if other files instantiate templates or use macros |
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27 // or inline functions from this file, or you compile this file and link it |
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28 // with other works to produce a work based on this file, this file does not |
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29 // by itself cause the resulting work to be covered by the GNU General Public |
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30 // License. However the source code for this file must still be made available |
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31 // in accordance with section (3) of the GNU General Public License. |
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32 // |
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33 // This exception does not invalidate any other reasons why a work based on |
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34 // this file might be covered by the GNU General Public License. |
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35 // |
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36 // Alternative licenses for eCos may be arranged by contacting Red Hat, Inc. |
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37 // at http://sources.redhat.com/ecos/ecos-license/ |
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38 // ------------------------------------------- |
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39 //####ECOSGPLCOPYRIGHTEND#### |
| 0 | 40 //================================================================= |
| 41 //#####DESCRIPTIONBEGIN#### | |
| 42 // | |
| 43 // Author(s): dsm | |
| 2 | 44 // Contributors: dsm, jlarmour |
| 45 // Date: 1999-02-16 | |
| 0 | 46 // Description: Test basic exception functionality |
| 47 //####DESCRIPTIONEND#### | |
| 48 | |
| 49 #include <pkgconf/kernel.h> | |
| 50 | |
| 51 #include <cyg/infra/testcase.h> | |
| 52 | |
| 53 #ifdef CYGPKG_KERNEL_EXCEPTIONS | |
| 54 | |
| 55 #include <cyg/kernel/sched.hxx> // Cyg_Scheduler::start() | |
| 56 #include <cyg/kernel/thread.hxx> // Cyg_Thread | |
| 57 #include <cyg/kernel/intr.hxx> // cyg_VSR | |
| 58 | |
| 59 #include <cyg/hal/hal_intr.h> // exception ranges | |
| 60 | |
| 61 #include <cyg/kernel/sched.inl> | |
| 62 #include <cyg/kernel/thread.inl> | |
| 63 | |
| 64 #define NTHREADS 1 | |
| 65 #include "testaux.hxx" | |
| 66 | |
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67 #ifndef CYGPKG_HAL_ARM_PID |
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68 #define EXCEPTION_DATA_ACCESS |
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69 #endif |
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70 |
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71 static int d0; |
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72 #ifdef EXCEPTION_DATA_ACCESS |
| 0 | 73 static cyg_exception_handler handler0; |
| 74 | |
| 75 static void handler0(CYG_ADDRWORD data, cyg_code number, CYG_ADDRWORD info) | |
| 76 { | |
| 77 CYG_TEST_INFO("handler 0 called"); | |
| 78 | |
| 79 CYG_TEST_CHECK((CYG_ADDRWORD)123 == data, "handler given wrong data"); | |
| 80 | |
| 81 // ignore machine specific stuff | |
| 82 CYG_UNUSED_PARAM(cyg_code, number); | |
| 83 CYG_UNUSED_PARAM(CYG_ADDRWORD, info); | |
| 84 | |
| 85 CYG_TEST_PASS_FINISH("Except 1 OK"); | |
| 86 } | |
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87 #endif |
| 0 | 88 |
| 89 static void handler1(CYG_ADDRWORD data, cyg_code number, CYG_ADDRWORD info) | |
| 90 { | |
| 91 CYG_TEST_INFO("handler 1 called"); | |
| 92 | |
| 93 CYG_TEST_CHECK((CYG_ADDRWORD)&d0 == data, "handler given wrong data"); | |
| 94 | |
| 95 #ifdef CYGSEM_KERNEL_EXCEPTIONS_DECODE | |
| 2 | 96 CYG_TEST_CHECK(number == CYGNUM_HAL_EXCEPTION_MAX, "handler given wrong number"); |
| 0 | 97 #else |
| 98 CYG_UNUSED_PARAM(cyg_code, number); | |
| 99 #endif | |
| 100 | |
| 101 CYG_TEST_CHECK((CYG_ADDRWORD)99 == info, "handler given wrong info"); | |
| 102 } | |
| 103 | |
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104 #ifdef EXCEPTION_DATA_ACCESS |
| 0 | 105 // The following function attempts to cause an exception in various |
| 106 // hacky ways. It is machine dependent what exception is generated. | |
| 107 // It does reads rather than writes hoping not to corrupt anything | |
| 108 // important. | |
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109 static int |
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110 cause_fpe(int num) |
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111 { |
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112 double a; |
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113 |
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114 a = 1.0/num; // Depending on FPU emulation and/or |
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115 // the FPU architecture, this may |
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116 // cause an exception. |
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117 // (float division by zero) |
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118 |
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119 return ((int)a)/num; // This may cause an exception if |
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120 // the architecture supports it. |
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121 // (integer division by zero). |
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122 } // cause_fpe() |
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123 |
| 0 | 124 void cause_exception(void) |
| 125 { | |
| 126 int x; | |
| 127 unsigned int p=0; | |
| 128 | |
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129 // First try for an address exception (unaligned access exception |
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130 // or SEGV/BUS exceptions) |
| 0 | 131 do { |
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132 x=*(volatile int *)(p-1); |
| 0 | 133 p+=0x100000; |
| 134 } while(p != 0); | |
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135 |
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136 // Next try an integer or floating point divide-by-zero exception. |
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137 cause_fpe(0); |
| 0 | 138 } |
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139 #endif |
| 0 | 140 |
| 141 static void entry0( CYG_ADDRWORD data ) | |
| 142 { | |
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143 #ifdef EXCEPTION_DATA_ACCESS |
| 0 | 144 cyg_code n; |
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145 #endif |
| 0 | 146 cyg_exception_handler *old_handler, *old_handler1; |
| 147 CYG_ADDRWORD old_data, old_data1; | |
| 148 Cyg_Thread *p=Cyg_Thread::self(); | |
| 149 | |
| 150 CYG_UNUSED_PARAM(CYG_ADDRESS, data); | |
| 151 | |
| 152 p->register_exception( | |
| 2 | 153 CYGNUM_HAL_EXCEPTION_MAX, |
| 0 | 154 &handler1, |
| 155 (CYG_ADDRWORD)&d0, | |
| 156 &old_handler, | |
| 157 &old_data); | |
| 158 | |
| 159 p->register_exception( | |
| 2 | 160 CYGNUM_HAL_EXCEPTION_MAX, |
| 0 | 161 &handler1, |
| 162 (CYG_ADDRWORD)&d0, | |
| 163 &old_handler1, | |
| 164 &old_data1); | |
| 165 | |
| 166 CYG_TEST_CHECK(old_handler1 == &handler1, | |
| 167 "register exception: old_handler not the one previously registered"); | |
| 168 CYG_TEST_CHECK(old_data1 == (CYG_ADDRWORD)&d0, | |
| 169 "register exception: old_data not those previously registered"); | |
| 170 | |
| 2 | 171 p->deliver_exception(CYGNUM_HAL_EXCEPTION_MAX, (CYG_ADDRWORD)99); |
| 0 | 172 |
| 173 CYG_TEST_INFO("handler 1 returned"); | |
| 174 | |
| 2 | 175 p->deregister_exception(CYGNUM_HAL_EXCEPTION_MAX); |
| 176 p->deregister_exception(CYGNUM_HAL_EXCEPTION_MAX); | |
| 0 | 177 |
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178 #ifdef EXCEPTION_DATA_ACCESS |
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179 |
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180 #if 0 |
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181 #elif defined(CYGPKG_HAL_POWERPC_SIM) |
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182 // The exception generated by the SIM is not recognized by GDB. |
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183 // PR 19945 workaround. |
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184 CYG_TEST_NA("Not applicable to PowerPC SIM"); |
| 2 | 185 #endif |
| 186 | |
| 187 for(n = CYGNUM_HAL_EXCEPTION_MIN; n <= CYGNUM_HAL_EXCEPTION_MAX; n++) { | |
| 0 | 188 p->register_exception( |
| 189 n, | |
| 190 handler0, | |
| 191 (CYG_ADDRWORD)123, | |
| 192 &old_handler1, | |
| 193 &old_data1); | |
| 194 } | |
| 195 | |
| 2 | 196 CYG_TEST_PASS("Attempting to provoke exception"); |
| 0 | 197 |
| 198 cause_exception(); | |
| 199 | |
| 200 CYG_TEST_FAIL_FINISH("Couldn't cause exception"); | |
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201 #else // EXCEPTION_DATA_ACCESS |
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202 CYG_TEST_NA("Platform does not support data exceptions"); |
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203 #endif |
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204 |
| 0 | 205 } |
| 206 | |
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207 #ifdef CYG_HAL_MIPS_TX39_JMR3904 |
| 0 | 208 |
| 209 externC cyg_VSR __default_exception_vsr; | |
| 210 cyg_VSR *old_vsr; | |
| 211 | |
| 212 #endif | |
| 213 | |
| 214 void except0_main( void ) | |
| 215 { | |
| 2 | 216 // Use CYG_TEST_GDBCMD _before_ CYG_TEST_INIT() |
| 217 CYG_TEST_GDBCMD("handle SIGBUS nostop"); | |
| 218 CYG_TEST_GDBCMD("handle SIGSEGV nostop"); | |
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219 CYG_TEST_GDBCMD("handle SIGFPE nostop"); |
| 2 | 220 |
| 0 | 221 CYG_TEST_INIT(); |
| 222 | |
| 2 | 223 #ifdef HAL_VSR_SET_TO_ECOS_HANDLER |
| 224 // Reclaim the VSR off CygMon possibly | |
| 225 #ifdef CYGNUM_HAL_EXCEPTION_DATA_ACCESS | |
| 226 HAL_VSR_SET_TO_ECOS_HANDLER( CYGNUM_HAL_EXCEPTION_DATA_ACCESS, NULL ); | |
| 227 #endif | |
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228 #ifdef CYGNUM_HAL_EXCEPTION_DATA_TLBMISS_ACCESS |
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229 HAL_VSR_SET_TO_ECOS_HANDLER( CYGNUM_HAL_EXCEPTION_DATA_TLBMISS_ACCESS, NULL ); |
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230 #endif |
| 2 | 231 #ifdef CYGNUM_HAL_EXCEPTION_DATA_UNALIGNED_ACCESS |
| 232 HAL_VSR_SET_TO_ECOS_HANDLER( CYGNUM_HAL_EXCEPTION_DATA_UNALIGNED_ACCESS, NULL ); | |
| 233 #endif | |
| 234 #ifdef CYGNUM_HAL_EXCEPTION_ILLEGAL_INSTRUCTION | |
| 235 HAL_VSR_SET_TO_ECOS_HANDLER( CYGNUM_HAL_EXCEPTION_ILLEGAL_INSTRUCTION, NULL ); | |
| 236 #endif | |
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237 #ifdef CYGNUM_HAL_EXCEPTION_DIV_BY_ZERO |
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238 HAL_VSR_SET_TO_ECOS_HANDLER( CYGNUM_HAL_EXCEPTION_DIV_BY_ZERO, NULL ); |
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239 #endif |
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240 #ifdef CYGNUM_HAL_EXCEPTION_FPU |
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241 HAL_VSR_SET_TO_ECOS_HANDLER( CYGNUM_HAL_EXCEPTION_FPU, NULL ); |
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242 #endif |
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243 #ifdef CYGNUM_HAL_EXCEPTION_FPU_DIV_BY_ZERO |
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244 HAL_VSR_SET_TO_ECOS_HANDLER( CYGNUM_HAL_EXCEPTION_FPU_DIV_BY_ZERO, NULL ); |
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245 #endif |
| 0 | 246 #endif |
| 247 | |
| 248 new_thread(entry0, 0); | |
| 249 | |
| 250 Cyg_Scheduler::start(); | |
| 251 | |
| 252 CYG_TEST_FAIL_FINISH("Not reached"); | |
| 253 } | |
| 254 externC void | |
| 255 cyg_start( void ) | |
| 256 { | |
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130
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257 #ifdef CYGSEM_HAL_STOP_CONSTRUCTORS_ON_FLAG |
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258 cyg_hal_invoke_constructors(); |
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259 #endif |
| 0 | 260 except0_main(); |
| 261 } | |
| 262 #else // def CYGPKG_KERNEL_EXCEPTIONS | |
| 263 externC void | |
| 264 cyg_start( void ) | |
| 265 { | |
| 266 CYG_TEST_INIT(); | |
| 2 | 267 CYG_TEST_NA("Exceptions disabled"); |
| 0 | 268 } |
| 269 #endif // def CYGPKG_KERNEL_EXCEPTIONS | |
| 270 | |
| 271 // EOF except1.cxx |