Mercurial > flash_v2
diff packages/kernel/current/tests/kexcept1.c @ 0:3111d98ba7b3 ecos-v1_1-release
Initial commit of eCos version 1.1
| author | jlarmour |
|---|---|
| date | Tue, 11 May 1999 11:16:07 +0000 |
| parents | |
| children | 443894e2e912 |
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new file mode 100644 --- /dev/null +++ b/packages/kernel/current/tests/kexcept1.c @@ -0,0 +1,207 @@ +/*================================================================= +// +// kexcept1.cxx +// +// Kernel C API Exception test 1 +// +//================================================================= +//####COPYRIGHTBEGIN#### +// +// ------------------------------------------- +// The contents of this file are subject to the Cygnus eCos Public License +// Version 1.0 (the "License"); you may not use this file except in +// compliance with the License. You may obtain a copy of the License at +// http://sourceware.cygnus.com/ecos +// +// Software distributed under the License is distributed on an "AS IS" +// basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the +// License for the specific language governing rights and limitations under +// the License. +// +// The Original Code is eCos - Embedded Cygnus Operating System, released +// September 30, 1998. +// +// The Initial Developer of the Original Code is Cygnus. Portions created +// by Cygnus are Copyright (C) 1998 Cygnus Solutions. All Rights Reserved. +// ------------------------------------------- +// +//####COPYRIGHTEND#### +//================================================================= +//#####DESCRIPTIONBEGIN#### +// +// Author(s): dsm +// Contributors: dsm +// Date: 1998-06-15 +// Description: Test basic exception functionality +//####DESCRIPTIONEND#### +*/ + +#include <cyg/kernel/kapi.h> + +#include <cyg/infra/testcase.h> + +#ifdef CYGPKG_KERNEL_EXCEPTIONS + +#ifdef CYGFUN_KERNEL_API_C + +#include <cyg/hal/hal_intr.h> // exception ranges + +#include "testaux.h" + +#define NTHREADS 1 +#define STACKSIZE 4096 + +static cyg_handle_t thread[NTHREADS]; + +static cyg_thread thread_obj[NTHREADS]; +static char stack[NTHREADS][STACKSIZE]; + + +static cyg_exception_handler_t handler0; +static int d0; + +static void handler0(cyg_addrword_t data, cyg_code_t number, cyg_addrword_t info) +{ + CYG_TEST_INFO("handler 0 called"); + + CYG_TEST_CHECK((cyg_addrword_t)123 == data, "handler given wrong data"); + + // ignore machine specific stuff + CYG_UNUSED_PARAM(cyg_code_t, number); + CYG_UNUSED_PARAM(cyg_addrword_t, info); + + CYG_TEST_PASS_FINISH("Except 1 OK"); +} + +static void handler1(cyg_addrword_t data, cyg_code_t number, cyg_addrword_t info) +{ + CYG_TEST_INFO("handler 1 called"); + + CYG_TEST_CHECK((cyg_addrword_t)&d0 == data, "handler given wrong data"); + +#ifdef CYGSEM_KERNEL_EXCEPTIONS_DECODE + CYG_TEST_CHECK(number == CYG_EXCEPTION_MAX, "handler given wrong number"); +#else + CYG_UNUSED_PARAM(cyg_code_t, number); +#endif + + CYG_TEST_CHECK((cyg_addrword_t)99 == info, "handler given wrong info"); +} + + +// The following function attempts to cause an exception in various +// hacky ways. It is machine dependent what exception is generated. +// It does reads rather than writes hoping not to corrupt anything +// important. +void cause_exception(void) +{ + int x; + unsigned int p=0; + + do { + x=*(volatile int *)(p-1)/p; + p+=0x100000; + } while(p != 0); +} + +static void entry0( CYG_ADDRWORD data ) +{ + cyg_code_t n; + cyg_exception_handler_t *old_handler, *old_handler1; + cyg_addrword_t old_data, old_data1; + + CYG_UNUSED_PARAM(CYG_ADDRESS, data); + + cyg_exception_set_handler( + CYG_EXCEPTION_MAX, + &handler1, + (cyg_addrword_t)&d0, + &old_handler, + &old_data); + + cyg_exception_set_handler( + CYG_EXCEPTION_MAX, + &handler1, + (cyg_addrword_t)&d0, + &old_handler1, + &old_data1); + + CYG_TEST_CHECK(old_handler1 == &handler1, + "register exception: old_handler not the one previously registered"); + CYG_TEST_CHECK(old_data1 == (cyg_addrword_t)&d0, + "register exception: old_data not those previously registered"); + + cyg_exception_call_handler( + cyg_thread_self(), + CYG_EXCEPTION_MAX, + (cyg_addrword_t)99); + + CYG_TEST_INFO("handler 1 returned"); + + cyg_exception_clear_handler(CYG_EXCEPTION_MAX); + cyg_exception_clear_handler(CYG_EXCEPTION_MAX); + + for(n = CYG_EXCEPTION_MIN; n <= CYG_EXCEPTION_MAX; n++) { + cyg_exception_set_handler( + n, + handler0, + (cyg_addrword_t)123, + &old_handler1, + &old_data1); + } + + CYG_TEST_INFO("Attempting to provoke exception"); + + cause_exception(); + + CYG_TEST_FAIL_FINISH("Couldn't cause exception"); +} + +#ifdef CYG_HAL_TX39_JMR3904 + +extern void __default_exception_vsr(void); + +#endif + +void except0_main( void ) +{ + CYG_TEST_INIT(); + +#ifdef CYG_HAL_TX39_JMR3904 + + cyg_interrupt_set_vsr( CYG_VECTOR_LOAD_ADDRESS, __default_exception_vsr ); + +#endif + + cyg_thread_create(4, entry0 , (cyg_addrword_t)0, "kexcept1", + (void *)stack[0], STACKSIZE, &thread[0], &thread_obj[0]); + cyg_thread_resume(thread[0]); + + cyg_scheduler_start(); + + CYG_TEST_FAIL_FINISH("Not reached"); +} + +externC void +cyg_start( void ) +{ + except0_main(); +} + +#else // def CYGFUN_KERNEL_API_C +#define N_A_MSG "Kernel C API layer disabled" +#endif // def CYGFUN_KERNEL_API_C +#else // def CYGPKG_KERNEL_EXCEPTIONS +#define N_A_MSG "Exceptions disabled" +#endif // def CYGPKG_KERNEL_EXCEPTIONS + +#ifdef N_A_MSG +externC void +cyg_start( void ) +{ + CYG_TEST_INIT(); + CYG_TEST_PASS_FINISH( "N/A: " N_A_MSG); +} +#endif // N_A_MSG + +/* EOF kexcept1.c */
