| /* |
| * Copyright (c) 2013-2014 Wind River Systems, Inc. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| /** |
| * @file |
| * @brief Nanokernel fatal error handler |
| * |
| * This module provides the _NanoFatalErrorHandler() routine. |
| */ |
| |
| #include <toolchain.h> |
| #include <sections.h> |
| |
| #include <nanokernel.h> |
| #include <nano_private.h> |
| #include <misc/printk.h> |
| #include <asmPrv.h> |
| #include <drivers/loapic.h> |
| |
| /* |
| * Define a default ESF for use with _NanoFatalErrorHandler() in the event |
| * the caller does not have a NANO_ESF to pass |
| */ |
| const NANO_ESF _default_esf = { |
| 0xdeaddead, /* ESP */ |
| 0xdeaddead, /* EBP */ |
| 0xdeaddead, /* EBX */ |
| 0xdeaddead, /* ESI */ |
| 0xdeaddead, /* EDI */ |
| 0xdeaddead, /* EDX */ |
| 0xdeaddead, /* ECX */ |
| 0xdeaddead, /* EAX */ |
| 0xdeaddead, /* error code */ |
| 0xdeaddead, /* EIP */ |
| 0xdeaddead, /* CS */ |
| 0xdeaddead, /* EFLAGS */ |
| }; |
| |
| /** |
| * |
| * @brief Nanokernel fatal error handler |
| * |
| * This routine is called when a fatal error condition is detected by either |
| * hardware or software. |
| * |
| * The caller is expected to always provide a usable ESF. In the event that the |
| * fatal error does not have a hardware generated ESF, the caller should either |
| * create its own or use a pointer to the global default ESF <_default_esf>. |
| * |
| * @param reason the reason that the handler was called |
| * @param pEsf pointer to the exception stack frame |
| * |
| * @return This function does not return. |
| */ |
| FUNC_NORETURN void _NanoFatalErrorHandler(unsigned int reason, |
| const NANO_ESF *pEsf) |
| { |
| |
| #ifdef CONFIG_PRINTK |
| |
| /* Display diagnostic information about the error */ |
| |
| switch (reason) { |
| case _NANO_ERR_CPU_EXCEPTION: |
| break; |
| |
| case _NANO_ERR_SPURIOUS_INT: |
| printk("***** Unhandled interrupt vector %d occurred! " |
| "*****\n", _loapic_isr_vector_get()); |
| break; |
| |
| case _NANO_ERR_INVALID_TASK_EXIT: |
| printk("***** Invalid Exit Software Error! *****\n"); |
| break; |
| |
| #if defined(CONFIG_STACK_CANARIES) |
| case _NANO_ERR_STACK_CHK_FAIL: |
| printk("***** Stack Check Fail! *****\n"); |
| break; |
| #endif /* CONFIG_STACK_CANARIES */ |
| |
| |
| case _NANO_ERR_ALLOCATION_FAIL: |
| printk("**** Kernel Allocation Failure! ****\n"); |
| break; |
| |
| default: |
| printk("**** Unknown Fatal Error %d! ****\n", reason); |
| break; |
| } |
| |
| printk("Current thread ID = 0x%x\n" |
| "Faulting segment:address = 0x%x:0x%x\n" |
| "eax: 0x%x, ebx: 0x%x, ecx: 0x%x, edx: 0x%x\n" |
| "esi: 0x%x, edi: 0x%x, ebp: 0%x, esp: 0x%x\n" |
| "eflags: 0x%x\n", |
| sys_thread_self_get(), |
| pEsf->cs & 0xFFFF, pEsf->eip, |
| pEsf->eax, pEsf->ebx, pEsf->ecx, pEsf->edx, |
| pEsf->esi, pEsf->edi, pEsf->ebp, pEsf->esp, |
| pEsf->eflags); |
| #endif /* CONFIG_PRINTK */ |
| |
| |
| /* |
| * Error was fatal to a kernel task or a fiber; invoke the system |
| * fatal error handling policy defined for the platform. |
| */ |
| |
| _SysFatalErrorHandler(reason, pEsf); |
| } |
| |
| #if CONFIG_EXCEPTION_DEBUG |
| |
| static FUNC_NORETURN void generic_exc_handle(unsigned int vector, |
| const NANO_ESF *pEsf) |
| { |
| printk("***** CPU exception %d\n", vector); |
| if ((1 << vector) & _EXC_ERROR_CODE_FAULTS) { |
| printk("***** Exception code: 0x%x\n", pEsf->errorCode); |
| } |
| _NanoFatalErrorHandler(_NANO_ERR_CPU_EXCEPTION, pEsf); |
| } |
| |
| #define EXC_FUNC(vector) \ |
| FUNC_NORETURN void handle_exc_##vector(const NANO_ESF *pEsf) \ |
| { \ |
| generic_exc_handle(vector, pEsf); \ |
| } |
| |
| EXC_FUNC(IV_DIVIDE_ERROR); |
| EXC_FUNC(IV_NON_MASKABLE_INTERRUPT); |
| EXC_FUNC(IV_OVERFLOW); |
| EXC_FUNC(IV_BOUND_RANGE); |
| EXC_FUNC(IV_INVALID_OPCODE); |
| #ifndef CONFIG_FP_SHARING |
| EXC_FUNC(IV_DEVICE_NOT_AVAILABLE); |
| #endif |
| EXC_FUNC(IV_DOUBLE_FAULT); |
| EXC_FUNC(IV_INVALID_TSS); |
| EXC_FUNC(IV_SEGMENT_NOT_PRESENT); |
| EXC_FUNC(IV_STACK_FAULT); |
| EXC_FUNC(IV_GENERAL_PROTECTION); |
| EXC_FUNC(IV_PAGE_FAULT); |
| EXC_FUNC(IV_X87_FPU_FP_ERROR); |
| EXC_FUNC(IV_ALIGNMENT_CHECK); |
| EXC_FUNC(IV_MACHINE_CHECK); |
| |
| #endif /* CONFIG_EXCEPTION_DEBUG */ |
| |