diff options
Diffstat (limited to 'cpukit/score/cpu/arm/arm_exc_handler_high.c')
| -rw-r--r-- | cpukit/score/cpu/arm/arm_exc_handler_high.c | 121 |
1 files changed, 121 insertions, 0 deletions
diff --git a/cpukit/score/cpu/arm/arm_exc_handler_high.c b/cpukit/score/cpu/arm/arm_exc_handler_high.c new file mode 100644 index 0000000000..176c1b4561 --- /dev/null +++ b/cpukit/score/cpu/arm/arm_exc_handler_high.c @@ -0,0 +1,121 @@ +/** + * @file + * + * @ingroup ScoreCPU + * + * @brief ARM exception support implementation. + */ + +/* + * COPYRIGHT (c) 2000 Canon Research Centre France SA. + * Emmanuel Raguet, mailto:raguet@crf.canon.fr + * + * Copyright (c) 2002 Advent Networks, Inc + * Jay Monkman <jmonkman@adventnetworks.com> + * + * Copyright (c) 2007 Ray xu <rayx.cn@gmail.com> + * + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * http://www.rtems.com/license/LICENSE. + * + * Moved from file 'cpukit/score/cpu/arm/cpu.c'. + * + * $Id$ + */ + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include <rtems/system.h> +#include <rtems.h> +#include <rtems/bspIo.h> +#include <rtems/score/isr.h> +#include <rtems/score/wkspace.h> +#include <rtems/score/thread.h> +#include <rtems/score/cpu.h> + +static void _defaultExcHandler (CPU_Exception_frame *ctx) +{ + printk("\n\r"); + printk("----------------------------------------------------------\n\r"); +#if 1 + printk("Exception 0x%x caught at PC 0x%x by thread %d\n", + ctx->register_ip, ctx->register_lr - 4, + _Thread_Executing->Object.id); +#endif + printk("----------------------------------------------------------\n\r"); + printk("Processor execution context at time of the fault was :\n\r"); + printk("----------------------------------------------------------\n\r"); +#if 0 + printk(" r0 = %8x r1 = %8x r2 = %8x r3 = %8x\n\r", + ctx->register_r0, ctx->register_r1, + ctx->register_r2, ctx->register_r3); + printk(" r4 = %8x r5 = %8x r6 = %8x r7 = %8x\n\r", + ctx->register_r4, ctx->register_r5, + ctx->register_r6, ctx->register_r7); + printk(" r8 = %8x r9 = %8x r10 = %8x\n\r", + ctx->register_r8, ctx->register_r9, ctx->register_r10); + printk(" fp = %8x ip = %8x sp = %8x pc = %8x\n\r", + ctx->register_fp, ctx->register_ip, + ctx->register_sp, ctx->register_lr - 4); + printk("----------------------------------------------------------\n\r"); +#endif + if (_ISR_Nest_level > 0) { + /* + * In this case we shall not delete the task interrupted as + * it has nothing to do with the fault. We cannot return either + * because the eip points to the faulty instruction so... + */ + printk("Exception while executing ISR!!!. System locked\n\r"); + while(1); + } + else { + printk("*********** FAULTY THREAD WILL BE DELETED **************\n\r"); + rtems_task_delete(_Thread_Executing->Object.id); + } +} + +typedef void (*cpuExcHandlerType) (CPU_Exception_frame*); + +cpuExcHandlerType _currentExcHandler = _defaultExcHandler; + +extern void _Exception_Handler_Undef_Swi(void); +extern void _Exception_Handler_Abort(void); +extern void _exc_data_abort(void); + + + +/* FIXME: put comments here */ +void rtems_exception_init_mngt(void) +{ + ISR_Level level; + + _CPU_ISR_Disable(level); + _CPU_ISR_install_vector(ARM_EXCEPTION_UNDEF, + _Exception_Handler_Undef_Swi, + NULL); + + _CPU_ISR_install_vector(ARM_EXCEPTION_SWI, + _Exception_Handler_Undef_Swi, + NULL); + + _CPU_ISR_install_vector(ARM_EXCEPTION_PREF_ABORT, + _Exception_Handler_Abort, + NULL); + + _CPU_ISR_install_vector(ARM_EXCEPTION_DATA_ABORT, + _exc_data_abort, + NULL); + + _CPU_ISR_install_vector(ARM_EXCEPTION_FIQ, + _Exception_Handler_Abort, + NULL); + + _CPU_ISR_install_vector(ARM_EXCEPTION_IRQ, + _Exception_Handler_Abort, + NULL); + + _CPU_ISR_Enable(level); +} |