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[/] [openrisc/] [trunk/] [rtos/] [ecos-3.0/] [packages/] [kernel/] [current/] [tests/] [except1.cxx] - Rev 851
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//================================================================= // // except1.cxx // // Exception test 1 // //================================================================= // ####ECOSGPLCOPYRIGHTBEGIN#### // ------------------------------------------- // This file is part of eCos, the Embedded Configurable Operating System. // Copyright (C) 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc. // // eCos is free software; you can redistribute it and/or modify it under // the terms of the GNU General Public License as published by the Free // Software Foundation; either version 2 or (at your option) any later // version. // // eCos is distributed in the hope that it will be useful, but WITHOUT // ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License // for more details. // // You should have received a copy of the GNU General Public License // along with eCos; if not, write to the Free Software Foundation, Inc., // 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. // // As a special exception, if other files instantiate templates or use // macros or inline functions from this file, or you compile this file // and link it with other works to produce a work based on this file, // this file does not by itself cause the resulting work to be covered by // the GNU General Public License. However the source code for this file // must still be made available in accordance with section (3) of the GNU // General Public License v2. // // This exception does not invalidate any other reasons why a work based // on this file might be covered by the GNU General Public License. // ------------------------------------------- // ####ECOSGPLCOPYRIGHTEND#### //================================================================= //#####DESCRIPTIONBEGIN#### // // Author(s): dsm // Contributors: dsm, jlarmour // Date: 1999-02-16 // Description: Test basic exception functionality //####DESCRIPTIONEND#### #include <pkgconf/kernel.h> #include <cyg/infra/testcase.h> #ifdef CYGPKG_KERNEL_EXCEPTIONS #include <cyg/kernel/sched.hxx> // Cyg_Scheduler::start() #include <cyg/kernel/thread.hxx> // Cyg_Thread #include <cyg/kernel/intr.hxx> // cyg_VSR #include <cyg/hal/hal_intr.h> // exception ranges #include <cyg/kernel/sched.inl> #include <cyg/kernel/thread.inl> #define NTHREADS 1 #include "testaux.hxx" #ifndef CYGPKG_HAL_ARM_PID #define EXCEPTION_DATA_ACCESS #endif static int d0; #ifdef EXCEPTION_DATA_ACCESS static cyg_exception_handler handler0; static void handler0(CYG_ADDRWORD data, cyg_code number, CYG_ADDRWORD info) { CYG_TEST_INFO("handler 0 called"); CYG_TEST_CHECK((CYG_ADDRWORD)123 == data, "handler given wrong data"); // ignore machine specific stuff CYG_UNUSED_PARAM(cyg_code, number); CYG_UNUSED_PARAM(CYG_ADDRWORD, info); CYG_TEST_PASS_FINISH("Except 1 OK"); } #endif static void handler1(CYG_ADDRWORD data, cyg_code number, CYG_ADDRWORD info) { CYG_TEST_INFO("handler 1 called"); CYG_TEST_CHECK((CYG_ADDRWORD)&d0 == data, "handler given wrong data"); #ifdef CYGSEM_KERNEL_EXCEPTIONS_DECODE CYG_TEST_CHECK(number == CYGNUM_HAL_EXCEPTION_MAX, "handler given wrong number"); #else CYG_UNUSED_PARAM(cyg_code, number); #endif CYG_TEST_CHECK((CYG_ADDRWORD)99 == info, "handler given wrong info"); } #ifdef EXCEPTION_DATA_ACCESS // 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. static int cause_fpe(int num) { double a; a = 1.0/num; // Depending on FPU emulation and/or // the FPU architecture, this may // cause an exception. // (float division by zero) return ((int)a)/num; // This may cause an exception if // the architecture supports it. // (integer division by zero). } // cause_fpe() void cause_exception(void) { int x; unsigned int p=0; // First try for an address exception (unaligned access exception // or SEGV/BUS exceptions) do { x=*(volatile int *)(p-1); p+=0x100000; } while(p != 0); // Next try an integer or floating point divide-by-zero exception. cause_fpe(0); } #endif static void entry0( CYG_ADDRWORD data ) { #ifdef EXCEPTION_DATA_ACCESS cyg_code n; #endif cyg_exception_handler *old_handler, *old_handler1; CYG_ADDRWORD old_data, old_data1; Cyg_Thread *p=Cyg_Thread::self(); CYG_UNUSED_PARAM(CYG_ADDRESS, data); p->register_exception( CYGNUM_HAL_EXCEPTION_MAX, &handler1, (CYG_ADDRWORD)&d0, &old_handler, &old_data); p->register_exception( CYGNUM_HAL_EXCEPTION_MAX, &handler1, (CYG_ADDRWORD)&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)&d0, "register exception: old_data not those previously registered"); p->deliver_exception(CYGNUM_HAL_EXCEPTION_MAX, (CYG_ADDRWORD)99); CYG_TEST_INFO("handler 1 returned"); p->deregister_exception(CYGNUM_HAL_EXCEPTION_MAX); p->deregister_exception(CYGNUM_HAL_EXCEPTION_MAX); #ifdef EXCEPTION_DATA_ACCESS #if 0 #elif defined(CYGPKG_HAL_POWERPC_SIM) // The exception generated by the SIM is not recognized by GDB. // PR 19945 workaround. CYG_TEST_NA("Not applicable to PowerPC SIM"); #endif for(n = CYGNUM_HAL_EXCEPTION_MIN; n <= CYGNUM_HAL_EXCEPTION_MAX; n++) { p->register_exception( n, handler0, (CYG_ADDRWORD)123, &old_handler1, &old_data1); } CYG_TEST_PASS("Attempting to provoke exception"); cause_exception(); CYG_TEST_FAIL_FINISH("Couldn't cause exception"); #else // EXCEPTION_DATA_ACCESS CYG_TEST_NA("Platform does not support data exceptions"); #endif } #ifdef CYG_HAL_MIPS_TX39_JMR3904 externC cyg_VSR __default_exception_vsr; cyg_VSR *old_vsr; #endif void except0_main( void ) { // Use CYG_TEST_GDBCMD _before_ CYG_TEST_INIT() CYG_TEST_GDBCMD("handle SIGBUS nostop"); CYG_TEST_GDBCMD("handle SIGSEGV nostop"); CYG_TEST_GDBCMD("handle SIGFPE nostop"); CYG_TEST_INIT(); #ifdef HAL_VSR_SET_TO_ECOS_HANDLER // Reclaim the VSR off CygMon possibly #ifdef CYGNUM_HAL_EXCEPTION_DATA_ACCESS HAL_VSR_SET_TO_ECOS_HANDLER( CYGNUM_HAL_EXCEPTION_DATA_ACCESS, NULL ); #endif #ifdef CYGNUM_HAL_EXCEPTION_DATA_TLBMISS_ACCESS HAL_VSR_SET_TO_ECOS_HANDLER( CYGNUM_HAL_EXCEPTION_DATA_TLBMISS_ACCESS, NULL ); #endif #ifdef CYGNUM_HAL_EXCEPTION_DATA_UNALIGNED_ACCESS HAL_VSR_SET_TO_ECOS_HANDLER( CYGNUM_HAL_EXCEPTION_DATA_UNALIGNED_ACCESS, NULL ); #endif #ifdef CYGNUM_HAL_EXCEPTION_ILLEGAL_INSTRUCTION HAL_VSR_SET_TO_ECOS_HANDLER( CYGNUM_HAL_EXCEPTION_ILLEGAL_INSTRUCTION, NULL ); #endif #ifdef CYGNUM_HAL_EXCEPTION_DIV_BY_ZERO HAL_VSR_SET_TO_ECOS_HANDLER( CYGNUM_HAL_EXCEPTION_DIV_BY_ZERO, NULL ); #endif #ifdef CYGNUM_HAL_EXCEPTION_FPU HAL_VSR_SET_TO_ECOS_HANDLER( CYGNUM_HAL_EXCEPTION_FPU, NULL ); #endif #ifdef CYGNUM_HAL_EXCEPTION_FPU_DIV_BY_ZERO HAL_VSR_SET_TO_ECOS_HANDLER( CYGNUM_HAL_EXCEPTION_FPU_DIV_BY_ZERO, NULL ); #endif #endif new_thread(entry0, 0); Cyg_Scheduler::start(); CYG_TEST_FAIL_FINISH("Not reached"); } externC void cyg_start( void ) { #ifdef CYGSEM_HAL_STOP_CONSTRUCTORS_ON_FLAG cyg_hal_invoke_constructors(); #endif except0_main(); } #else // def CYGPKG_KERNEL_EXCEPTIONS externC void cyg_start( void ) { CYG_TEST_INIT(); CYG_TEST_NA("Exceptions disabled"); } #endif // def CYGPKG_KERNEL_EXCEPTIONS // EOF except1.cxx
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