mbed library sources. Supersedes mbed-src.
Dependents: Nucleo_Hello_Encoder BLE_iBeaconScan AM1805_DEMO DISCO-F429ZI_ExportTemplate1 ... more
cmsis/TARGET_CORTEX_M/mbed_fault_handler.c@189:f392fc9709a3, 2019-02-20 (annotated)
- Committer:
- AnnaBridge
- Date:
- Wed Feb 20 22:31:08 2019 +0000
- Revision:
- 189:f392fc9709a3
mbed library release version 165
Who changed what in which revision?
User | Revision | Line number | New contents of line |
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AnnaBridge | 189:f392fc9709a3 | 1 | /* mbed Microcontroller Library |
AnnaBridge | 189:f392fc9709a3 | 2 | * Copyright (c) 2006-2018 ARM Limited |
AnnaBridge | 189:f392fc9709a3 | 3 | * |
AnnaBridge | 189:f392fc9709a3 | 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
AnnaBridge | 189:f392fc9709a3 | 5 | * you may not use this file except in compliance with the License. |
AnnaBridge | 189:f392fc9709a3 | 6 | * You may obtain a copy of the License at |
AnnaBridge | 189:f392fc9709a3 | 7 | * |
AnnaBridge | 189:f392fc9709a3 | 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
AnnaBridge | 189:f392fc9709a3 | 9 | * |
AnnaBridge | 189:f392fc9709a3 | 10 | * Unless required by applicable law or agreed to in writing, software |
AnnaBridge | 189:f392fc9709a3 | 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
AnnaBridge | 189:f392fc9709a3 | 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
AnnaBridge | 189:f392fc9709a3 | 13 | * See the License for the specific language governing permissions and |
AnnaBridge | 189:f392fc9709a3 | 14 | * limitations under the License. |
AnnaBridge | 189:f392fc9709a3 | 15 | */ |
AnnaBridge | 189:f392fc9709a3 | 16 | |
AnnaBridge | 189:f392fc9709a3 | 17 | #ifndef __STDC_FORMAT_MACROS |
AnnaBridge | 189:f392fc9709a3 | 18 | #define __STDC_FORMAT_MACROS |
AnnaBridge | 189:f392fc9709a3 | 19 | #endif |
AnnaBridge | 189:f392fc9709a3 | 20 | #include <inttypes.h> |
AnnaBridge | 189:f392fc9709a3 | 21 | #include <string.h> |
AnnaBridge | 189:f392fc9709a3 | 22 | |
AnnaBridge | 189:f392fc9709a3 | 23 | #include "device.h" |
AnnaBridge | 189:f392fc9709a3 | 24 | #include "mbed_error.h" |
AnnaBridge | 189:f392fc9709a3 | 25 | #include "mbed_interface.h" |
AnnaBridge | 189:f392fc9709a3 | 26 | #include "mbed_crash_data_offsets.h" |
AnnaBridge | 189:f392fc9709a3 | 27 | |
AnnaBridge | 189:f392fc9709a3 | 28 | #ifndef MBED_FAULT_HANDLER_DISABLED |
AnnaBridge | 189:f392fc9709a3 | 29 | #include "mbed_fault_handler.h" |
AnnaBridge | 189:f392fc9709a3 | 30 | |
AnnaBridge | 189:f392fc9709a3 | 31 | //Functions Prototypes |
AnnaBridge | 189:f392fc9709a3 | 32 | void print_context_info(void); |
AnnaBridge | 189:f392fc9709a3 | 33 | |
AnnaBridge | 189:f392fc9709a3 | 34 | #if MBED_CONF_PLATFORM_CRASH_CAPTURE_ENABLED |
AnnaBridge | 189:f392fc9709a3 | 35 | //Global for populating the context in exception handler |
AnnaBridge | 189:f392fc9709a3 | 36 | mbed_fault_context_t *const mbed_fault_context=(mbed_fault_context_t *)(FAULT_CONTEXT_LOCATION); |
AnnaBridge | 189:f392fc9709a3 | 37 | #else |
AnnaBridge | 189:f392fc9709a3 | 38 | mbed_fault_context_t fault_context; |
AnnaBridge | 189:f392fc9709a3 | 39 | mbed_fault_context_t *const mbed_fault_context=(mbed_fault_context_t *)&fault_context; |
AnnaBridge | 189:f392fc9709a3 | 40 | #endif |
AnnaBridge | 189:f392fc9709a3 | 41 | |
AnnaBridge | 189:f392fc9709a3 | 42 | //This is a handler function called from Fault handler to print the error information out. |
AnnaBridge | 189:f392fc9709a3 | 43 | //This runs in fault context and uses special functions(defined in mbed_rtx_fault_handler.c) to print the information without using C-lib support. |
AnnaBridge | 189:f392fc9709a3 | 44 | void mbed_fault_handler (uint32_t fault_type, void *mbed_fault_context_in) |
AnnaBridge | 189:f392fc9709a3 | 45 | { |
AnnaBridge | 189:f392fc9709a3 | 46 | mbed_error_status_t faultStatus = MBED_SUCCESS; |
AnnaBridge | 189:f392fc9709a3 | 47 | |
AnnaBridge | 189:f392fc9709a3 | 48 | mbed_error_printf("\n++ MbedOS Fault Handler ++\n\nFaultType: "); |
AnnaBridge | 189:f392fc9709a3 | 49 | |
AnnaBridge | 189:f392fc9709a3 | 50 | switch( fault_type ) { |
AnnaBridge | 189:f392fc9709a3 | 51 | case MEMMANAGE_FAULT_EXCEPTION: |
AnnaBridge | 189:f392fc9709a3 | 52 | mbed_error_printf("MemManageFault"); |
AnnaBridge | 189:f392fc9709a3 | 53 | faultStatus = MBED_ERROR_MEMMANAGE_EXCEPTION; |
AnnaBridge | 189:f392fc9709a3 | 54 | break; |
AnnaBridge | 189:f392fc9709a3 | 55 | |
AnnaBridge | 189:f392fc9709a3 | 56 | case BUS_FAULT_EXCEPTION: |
AnnaBridge | 189:f392fc9709a3 | 57 | mbed_error_printf("BusFault"); |
AnnaBridge | 189:f392fc9709a3 | 58 | faultStatus = MBED_ERROR_BUSFAULT_EXCEPTION; |
AnnaBridge | 189:f392fc9709a3 | 59 | break; |
AnnaBridge | 189:f392fc9709a3 | 60 | |
AnnaBridge | 189:f392fc9709a3 | 61 | case USAGE_FAULT_EXCEPTION: |
AnnaBridge | 189:f392fc9709a3 | 62 | mbed_error_printf("UsageFault"); |
AnnaBridge | 189:f392fc9709a3 | 63 | faultStatus = MBED_ERROR_USAGEFAULT_EXCEPTION; |
AnnaBridge | 189:f392fc9709a3 | 64 | break; |
AnnaBridge | 189:f392fc9709a3 | 65 | |
AnnaBridge | 189:f392fc9709a3 | 66 | //There is no way we can hit this code without getting an exception, so we have the default treated like hardfault |
AnnaBridge | 189:f392fc9709a3 | 67 | case HARD_FAULT_EXCEPTION: |
AnnaBridge | 189:f392fc9709a3 | 68 | default: |
AnnaBridge | 189:f392fc9709a3 | 69 | mbed_error_printf("HardFault"); |
AnnaBridge | 189:f392fc9709a3 | 70 | faultStatus = MBED_ERROR_HARDFAULT_EXCEPTION; |
AnnaBridge | 189:f392fc9709a3 | 71 | break; |
AnnaBridge | 189:f392fc9709a3 | 72 | } |
AnnaBridge | 189:f392fc9709a3 | 73 | mbed_error_printf("\n\nContext:"); |
AnnaBridge | 189:f392fc9709a3 | 74 | print_context_info(); |
AnnaBridge | 189:f392fc9709a3 | 75 | |
AnnaBridge | 189:f392fc9709a3 | 76 | mbed_error_printf("\n\n-- MbedOS Fault Handler --\n\n"); |
AnnaBridge | 189:f392fc9709a3 | 77 | |
AnnaBridge | 189:f392fc9709a3 | 78 | //Now call mbed_error, to log the error and halt the system |
AnnaBridge | 189:f392fc9709a3 | 79 | mbed_error( faultStatus, "Fault exception", mbed_fault_context->PC_reg, NULL, 0 ); |
AnnaBridge | 189:f392fc9709a3 | 80 | |
AnnaBridge | 189:f392fc9709a3 | 81 | } |
AnnaBridge | 189:f392fc9709a3 | 82 | |
AnnaBridge | 189:f392fc9709a3 | 83 | MBED_NOINLINE void print_context_info(void) |
AnnaBridge | 189:f392fc9709a3 | 84 | { |
AnnaBridge | 189:f392fc9709a3 | 85 | //Context Regs |
AnnaBridge | 189:f392fc9709a3 | 86 | for(int i=0;i<13;i++) { |
AnnaBridge | 189:f392fc9709a3 | 87 | mbed_error_printf("\nR%-4d: %08" PRIX32, i, ((uint32_t *)(mbed_fault_context))[i]); |
AnnaBridge | 189:f392fc9709a3 | 88 | } |
AnnaBridge | 189:f392fc9709a3 | 89 | |
AnnaBridge | 189:f392fc9709a3 | 90 | mbed_error_printf("\nSP : %08" PRIX32 |
AnnaBridge | 189:f392fc9709a3 | 91 | "\nLR : %08" PRIX32 |
AnnaBridge | 189:f392fc9709a3 | 92 | "\nPC : %08" PRIX32 |
AnnaBridge | 189:f392fc9709a3 | 93 | "\nxPSR : %08" PRIX32 |
AnnaBridge | 189:f392fc9709a3 | 94 | "\nPSP : %08" PRIX32 |
AnnaBridge | 189:f392fc9709a3 | 95 | "\nMSP : %08" PRIX32, mbed_fault_context->SP_reg, mbed_fault_context->LR_reg, mbed_fault_context->PC_reg, |
AnnaBridge | 189:f392fc9709a3 | 96 | mbed_fault_context->xPSR, mbed_fault_context->PSP, mbed_fault_context->MSP ); |
AnnaBridge | 189:f392fc9709a3 | 97 | |
AnnaBridge | 189:f392fc9709a3 | 98 | //Capture CPUID to get core/cpu info |
AnnaBridge | 189:f392fc9709a3 | 99 | mbed_error_printf("\nCPUID: %08" PRIX32, SCB->CPUID); |
AnnaBridge | 189:f392fc9709a3 | 100 | |
AnnaBridge | 189:f392fc9709a3 | 101 | #if !defined(TARGET_M0) && !defined(TARGET_M0P) |
AnnaBridge | 189:f392fc9709a3 | 102 | //Capture fault information registers to infer the cause of exception |
AnnaBridge | 189:f392fc9709a3 | 103 | mbed_error_printf("\nHFSR : %08" PRIX32 |
AnnaBridge | 189:f392fc9709a3 | 104 | "\nMMFSR: %08" PRIX32 |
AnnaBridge | 189:f392fc9709a3 | 105 | "\nBFSR : %08" PRIX32 |
AnnaBridge | 189:f392fc9709a3 | 106 | "\nUFSR : %08" PRIX32 |
AnnaBridge | 189:f392fc9709a3 | 107 | "\nDFSR : %08" PRIX32 |
AnnaBridge | 189:f392fc9709a3 | 108 | "\nAFSR : %08" PRIX32 ////Split/Capture CFSR into MMFSR, BFSR, UFSR |
AnnaBridge | 189:f392fc9709a3 | 109 | ,SCB->HFSR, (0xFF & SCB->CFSR), ((0xFF00 & SCB->CFSR) >> 8), ((0xFFFF0000 & SCB->CFSR) >> 16), SCB->DFSR, SCB->AFSR ); |
AnnaBridge | 189:f392fc9709a3 | 110 | |
AnnaBridge | 189:f392fc9709a3 | 111 | //Print MMFAR only if its valid as indicated by MMFSR |
AnnaBridge | 189:f392fc9709a3 | 112 | if ((0xFF & SCB->CFSR) & 0x80) { |
AnnaBridge | 189:f392fc9709a3 | 113 | mbed_error_printf("\nMMFAR: %08" PRIX32, SCB->MMFAR); |
AnnaBridge | 189:f392fc9709a3 | 114 | } |
AnnaBridge | 189:f392fc9709a3 | 115 | //Print BFAR only if its valid as indicated by BFSR |
AnnaBridge | 189:f392fc9709a3 | 116 | if (((0xFF00 & SCB->CFSR) >> 8) & 0x80) { |
AnnaBridge | 189:f392fc9709a3 | 117 | mbed_error_printf("\nBFAR : %08" PRIX32, SCB->BFAR); |
AnnaBridge | 189:f392fc9709a3 | 118 | } |
AnnaBridge | 189:f392fc9709a3 | 119 | #endif |
AnnaBridge | 189:f392fc9709a3 | 120 | |
AnnaBridge | 189:f392fc9709a3 | 121 | //Print Mode |
AnnaBridge | 189:f392fc9709a3 | 122 | if (mbed_fault_context->EXC_RETURN & 0x8) { |
AnnaBridge | 189:f392fc9709a3 | 123 | mbed_error_printf("\nMode : Thread"); |
AnnaBridge | 189:f392fc9709a3 | 124 | //Print Priv level in Thread mode - We capture CONTROL reg which reflects the privilege. |
AnnaBridge | 189:f392fc9709a3 | 125 | //Note that the CONTROL register captured still reflects the privilege status of the |
AnnaBridge | 189:f392fc9709a3 | 126 | //thread mode eventhough we are in Handler mode by the time we capture it. |
AnnaBridge | 189:f392fc9709a3 | 127 | if(mbed_fault_context->CONTROL & 0x1) { |
AnnaBridge | 189:f392fc9709a3 | 128 | mbed_error_printf("\nPriv : User"); |
AnnaBridge | 189:f392fc9709a3 | 129 | } else { |
AnnaBridge | 189:f392fc9709a3 | 130 | mbed_error_printf("\nPriv : Privileged"); |
AnnaBridge | 189:f392fc9709a3 | 131 | } |
AnnaBridge | 189:f392fc9709a3 | 132 | } else { |
AnnaBridge | 189:f392fc9709a3 | 133 | mbed_error_printf("\nMode : Handler"); |
AnnaBridge | 189:f392fc9709a3 | 134 | mbed_error_printf("\nPriv : Privileged"); |
AnnaBridge | 189:f392fc9709a3 | 135 | } |
AnnaBridge | 189:f392fc9709a3 | 136 | //Print Return Stack |
AnnaBridge | 189:f392fc9709a3 | 137 | if (mbed_fault_context->EXC_RETURN & 0x4) { |
AnnaBridge | 189:f392fc9709a3 | 138 | mbed_error_printf("\nStack: PSP"); |
AnnaBridge | 189:f392fc9709a3 | 139 | } else { |
AnnaBridge | 189:f392fc9709a3 | 140 | mbed_error_printf("\nStack: MSP"); |
AnnaBridge | 189:f392fc9709a3 | 141 | } |
AnnaBridge | 189:f392fc9709a3 | 142 | } |
AnnaBridge | 189:f392fc9709a3 | 143 | |
AnnaBridge | 189:f392fc9709a3 | 144 | mbed_error_status_t mbed_get_reboot_fault_context (mbed_fault_context_t *fault_context) |
AnnaBridge | 189:f392fc9709a3 | 145 | { |
AnnaBridge | 189:f392fc9709a3 | 146 | mbed_error_status_t status = MBED_MAKE_ERROR(MBED_MODULE_PLATFORM, MBED_ERROR_CODE_ITEM_NOT_FOUND); |
AnnaBridge | 189:f392fc9709a3 | 147 | #if MBED_CONF_PLATFORM_CRASH_CAPTURE_ENABLED |
AnnaBridge | 189:f392fc9709a3 | 148 | if(fault_context == NULL) |
AnnaBridge | 189:f392fc9709a3 | 149 | return MBED_MAKE_ERROR(MBED_MODULE_PLATFORM, MBED_ERROR_CODE_INVALID_ARGUMENT); |
AnnaBridge | 189:f392fc9709a3 | 150 | memcpy(fault_context, mbed_fault_context, sizeof(mbed_fault_context_t)); |
AnnaBridge | 189:f392fc9709a3 | 151 | status = MBED_SUCCESS; |
AnnaBridge | 189:f392fc9709a3 | 152 | #endif |
AnnaBridge | 189:f392fc9709a3 | 153 | return status; |
AnnaBridge | 189:f392fc9709a3 | 154 | } |
AnnaBridge | 189:f392fc9709a3 | 155 | |
AnnaBridge | 189:f392fc9709a3 | 156 | #endif //MBED_FAULT_HANDLER_SUPPORT |