1 | /* mbed Microcontroller Library
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2 | * Copyright (c) 2006-2013 ARM Limited
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3 | *
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4 | * Licensed under the Apache License, Version 2.0 (the "License");
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5 | * you may not use this file except in compliance with the License.
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6 | * You may obtain a copy of the License at
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7 | *
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8 | * http://www.apache.org/licenses/LICENSE-2.0
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9 | *
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10 | * Unless required by applicable law or agreed to in writing, software
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11 | * distributed under the License is distributed on an "AS IS" BASIS,
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12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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13 | * See the License for the specific language governing permissions and
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14 | * limitations under the License.
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15 | */
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16 | #include <stdlib.h>
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17 | #include <stdarg.h>
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18 | #include <string.h>
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19 | #include "device.h"
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20 | #include "platform/mbed_critical.h"
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21 | #include "platform/mbed_error.h"
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22 | #include "platform/mbed_error_hist.h"
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23 | #include "platform/mbed_interface.h"
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24 | #ifdef MBED_CONF_RTOS_PRESENT
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25 | #include "rtx_os.h"
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26 | #endif
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27 |
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28 | #if DEVICE_STDIO_MESSAGES
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29 | #include <stdio.h>
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30 | #endif
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31 |
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32 | #define MBED_CONF_PLATFORM_ERROR_DECODE_HTTP_URL_STR "\nFor more info, visit: https://armmbed.github.io/mbedos-error/?error=0x%08X" // set by library:platform
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33 |
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34 | //Helper macro to get the current SP
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35 | #define GET_CURRENT_SP(sp) \
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36 | { \
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37 | /*If in Handler mode we are always using MSP*/ \
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38 | if ( __get_IPSR() != 0U ) { \
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39 | sp = __get_MSP(); \
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40 | } else { \
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41 | /*Look into CONTROL.SPSEL value*/ \
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42 | if ((__get_CONTROL() & 2U) == 0U) { \
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43 | sp = __get_MSP();/*Read MSP*/ \
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44 | } else { \
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45 | sp = __get_PSP();/*Read PSP*/ \
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46 | } \
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47 | } \
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48 | }
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49 |
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50 | #ifndef NDEBUG
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51 | #define ERROR_REPORT(ctx, error_msg) print_error_report(ctx, error_msg)
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52 | #else
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53 | #define ERROR_REPORT(ctx, error_msg) ((void) 0)
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54 | #endif
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55 |
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56 | static uint8_t error_in_progress = 0;
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57 | static int error_count = 0;
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58 | static mbed_error_ctx first_error_ctx = {0};
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59 | static mbed_error_ctx last_error_ctx = {0};
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60 | static mbed_error_hook_t error_hook = NULL;
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61 | static void print_error_report(mbed_error_ctx *ctx, const char *);
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62 | static mbed_error_status_t handle_error(mbed_error_status_t error_status, unsigned int error_value, const char *filename, int line_number, void *caller);
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63 |
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64 | //Helper function to halt the system
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65 | static void mbed_halt_system(void)
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66 | {
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67 | //If not in ISR context exit, otherwise spin on WFI
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68 | if (core_util_is_isr_active() || !core_util_are_interrupts_enabled()) {
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69 | for (;;) {
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70 | __WFI();
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71 | }
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72 | } else {
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73 | //exit eventually calls mbed_die
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74 | exit(1);
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75 | }
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76 | }
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77 |
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78 | WEAK void error(const char *format, ...)
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79 | {
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80 |
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81 | // Prevent recursion if error is called again
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82 | if (error_in_progress) {
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83 | return;
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84 | }
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85 |
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86 | //Call handle_error/print_error_report permanently setting error_in_progress flag
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87 | handle_error(MBED_ERROR_UNKNOWN, 0, NULL, 0, MBED_CALLER_ADDR());
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88 | ERROR_REPORT(&last_error_ctx, "Fatal Run-time error");
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89 | error_in_progress = 1;
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90 |
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91 | #ifndef NDEBUG
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92 | va_list arg;
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93 | va_start(arg, format);
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94 | mbed_error_vfprintf(format, arg);
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95 | va_end(arg);
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96 | #endif
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97 | exit(1);
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98 | }
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99 |
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100 | //Set an error status with the error handling system
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101 | static mbed_error_status_t handle_error(mbed_error_status_t error_status, unsigned int error_value, const char *filename, int line_number, void *caller)
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102 | {
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103 | mbed_error_ctx current_error_ctx;
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104 |
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105 | //Error status should always be < 0
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106 | if (error_status >= 0) {
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107 | //This is a weird situation, someone called mbed_error with invalid error code.
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108 | //We will still handle the situation but change the error code to ERROR_INVALID_ARGUMENT, atleast the context will have info on who called it
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109 | error_status = MBED_ERROR_INVALID_ARGUMENT;
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110 | }
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111 |
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112 | //Prevent corruption by holding out other callers
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113 | //and we also need this until we remove the "error" call completely
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114 | while (error_in_progress == 1);
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115 |
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116 | //Use critsect here, as we don't want inadvertant modification of this global variable
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117 | core_util_critical_section_enter();
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118 | error_in_progress = 1;
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119 | core_util_critical_section_exit();
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120 |
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121 | //Increment error count
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122 | error_count++;
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123 |
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124 | //Clear the context capturing buffer
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125 | memset(¤t_error_ctx, sizeof(mbed_error_ctx), 0);
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126 | //Capture error information
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127 | current_error_ctx.error_status = error_status;
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128 | current_error_ctx.error_address = (uint32_t)caller;
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129 | current_error_ctx.error_value = error_value;
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130 | #if 0 //def MBED_CONF_RTOS_PRESENT
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131 | //Capture thread info
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132 | osRtxThread_t *current_thread = osRtxInfo.thread.run.curr;
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133 | current_error_ctx.thread_id = (uint32_t)current_thread;
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134 | current_error_ctx.thread_entry_address = (uint32_t)current_thread->thread_addr;
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135 | current_error_ctx.thread_stack_size = current_thread->stack_size;
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136 | current_error_ctx.thread_stack_mem = (uint32_t)current_thread->stack_mem;
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137 | #ifdef TARGET_CORTEX_M
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138 | GET_CURRENT_SP(current_error_ctx.thread_current_sp);
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139 | #endif //TARGET_CORTEX_M
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140 |
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141 | #endif //MBED_CONF_RTOS_PRESENT
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142 |
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143 | #if MBED_CONF_PLATFORM_ERROR_FILENAME_CAPTURE_ENABLED
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144 | //Capture filename/linenumber if provided
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145 | //Index for tracking error_filename
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146 | memset(¤t_error_ctx.error_filename, 0, MBED_CONF_PLATFORM_MAX_ERROR_FILENAME_LEN);
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147 | strncpy(current_error_ctx.error_filename, filename, MBED_CONF_PLATFORM_MAX_ERROR_FILENAME_LEN);
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148 | current_error_ctx.error_line_number = line_number;
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149 | #endif
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150 |
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151 | //Capture the fist system error and store it
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152 | if (error_count == 1) { //first error
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153 | memcpy(&first_error_ctx, ¤t_error_ctx, sizeof(mbed_error_ctx));
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154 | }
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155 |
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156 | //copy this error to last error
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157 | memcpy(&last_error_ctx, ¤t_error_ctx, sizeof(mbed_error_ctx));
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158 |
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159 | #if MBED_CONF_PLATFORM_ERROR_HIST_ENABLED
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160 | //Log the error with error log
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161 | mbed_error_hist_put(¤t_error_ctx);
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162 | #endif
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163 |
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164 | //Call the error hook if available
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165 | if (error_hook != NULL) {
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166 | error_hook(&last_error_ctx);
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167 | }
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168 |
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169 | error_in_progress = 0;
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170 |
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171 | return MBED_SUCCESS;
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172 | }
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173 |
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174 | //Return the first error
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175 | mbed_error_status_t mbed_get_first_error(void)
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176 | {
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177 | //return the first error recorded
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178 | return first_error_ctx.error_status;
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179 | }
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180 |
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181 | //Return the last error
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182 | mbed_error_status_t mbed_get_last_error(void)
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183 | {
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184 | //return the last error recorded
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185 | return last_error_ctx.error_status;
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186 | }
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187 |
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188 | //Gets the current error count
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189 | int mbed_get_error_count(void)
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190 | {
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191 | //return the current error count
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192 | return error_count;
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193 | }
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194 |
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195 | //Sets a fatal error
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196 | mbed_error_status_t mbed_warning(mbed_error_status_t error_status, const char *error_msg, unsigned int error_value, const char *filename, int line_number)
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197 | {
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198 | return handle_error(error_status, error_value, filename, line_number, MBED_CALLER_ADDR());
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199 | }
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200 |
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201 | //Sets a fatal error, this function is marked WEAK to be able to override this for some tests
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202 | WEAK mbed_error_status_t mbed_error(mbed_error_status_t error_status, const char *error_msg, unsigned int error_value, const char *filename, int line_number)
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203 | {
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204 | //set the error reported and then halt the system
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205 | if (MBED_SUCCESS != handle_error(error_status, error_value, filename, line_number, MBED_CALLER_ADDR())) {
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206 | return MBED_ERROR_FAILED_OPERATION;
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207 | }
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208 |
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209 | //On fatal errors print the error context/report
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210 | ERROR_REPORT(&last_error_ctx, error_msg);
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211 | mbed_halt_system();
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212 |
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213 | return MBED_ERROR_FAILED_OPERATION;
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214 | }
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215 |
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216 | //Register an application defined callback with error handling
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217 | mbed_error_status_t mbed_set_error_hook(mbed_error_hook_t error_hook_in)
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218 | {
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219 | //register the new hook/callback
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220 | if (error_hook_in != NULL) {
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221 | error_hook = error_hook_in;
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222 | return MBED_SUCCESS;
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223 | }
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224 |
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225 | return MBED_ERROR_INVALID_ARGUMENT;
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226 | }
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227 |
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228 | //Retrieve the first error context from error log
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229 | mbed_error_status_t mbed_get_first_error_info(mbed_error_ctx *error_info)
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230 | {
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231 | memcpy(error_info, &first_error_ctx, sizeof(first_error_ctx));
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232 | return MBED_SUCCESS;
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233 | }
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234 |
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235 | //Retrieve the last error context from error log
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236 | mbed_error_status_t mbed_get_last_error_info(mbed_error_ctx *error_info)
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237 | {
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238 | memcpy(error_info, &last_error_ctx, sizeof(mbed_error_ctx));
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239 | return MBED_SUCCESS;
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240 | }
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241 |
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242 | //Makes an mbed_error_status_t value
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243 | mbed_error_status_t mbed_make_error(mbed_error_type_t error_type, mbed_module_type_t entity, mbed_error_code_t error_code)
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244 | {
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245 | switch (error_type) {
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246 | case MBED_ERROR_TYPE_POSIX:
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247 | if (error_code >= MBED_POSIX_ERROR_BASE && error_code <= MBED_SYSTEM_ERROR_BASE) {
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248 | return -error_code;
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249 | }
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250 | break;
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251 |
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252 | case MBED_ERROR_TYPE_SYSTEM:
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253 | if (error_code >= MBED_SYSTEM_ERROR_BASE && error_code <= MBED_CUSTOM_ERROR_BASE) {
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254 | return MAKE_MBED_ERROR(MBED_ERROR_TYPE_SYSTEM, entity, error_code);
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255 | }
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256 | break;
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257 |
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258 | case MBED_ERROR_TYPE_CUSTOM:
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259 | if (error_code >= MBED_CUSTOM_ERROR_BASE) {
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260 | return MAKE_MBED_ERROR(MBED_ERROR_TYPE_CUSTOM, entity, error_code);
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261 | }
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262 | break;
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263 |
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264 | default:
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265 | break;
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266 | }
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267 |
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268 | //If we are passed incorrect values return a generic system error
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269 | return MAKE_MBED_ERROR(MBED_ERROR_TYPE_SYSTEM, MBED_MODULE_UNKNOWN, MBED_ERROR_CODE_UNKNOWN);
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270 | }
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271 |
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272 | /**
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273 | * Clears all the last error, error count and all entries in the error log.
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274 | * @return 0 or MBED_SUCCESS on success.
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275 | *
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276 | */
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277 | mbed_error_status_t mbed_clear_all_errors(void)
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278 | {
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279 | mbed_error_status_t status = MBED_SUCCESS;
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280 |
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281 | //Make sure we dont multiple clients resetting
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282 | core_util_critical_section_enter();
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283 | //Clear the error and context capturing buffer
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284 | memset(&last_error_ctx, sizeof(mbed_error_ctx), 0);
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285 | //reset error count to 0
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286 | error_count = 0;
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287 | #if MBED_CONF_PLATFORM_ERROR_HIST_ENABLED
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288 | status = mbed_error_hist_reset();
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289 | #endif
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290 | core_util_critical_section_exit();
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291 |
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292 | return status;
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293 | }
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294 |
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295 | #if MBED_CONF_PLATFORM_ERROR_ALL_THREADS_INFO && defined(MBED_CONF_RTOS_PRESENT)
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296 | /* Prints info of a thread(using osRtxThread_t struct)*/
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297 | static void print_thread(osRtxThread_t *thread)
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298 | {
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299 | mbed_error_printf("\nState: 0x%08X Entry: 0x%08X Stack Size: 0x%08X Mem: 0x%08X SP: 0x%08X", thread->state, thread->thread_addr, thread->stack_size, (uint32_t)thread->stack_mem, thread->sp);
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300 | }
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301 |
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302 | /* Prints thread info from a list */
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303 | static void print_threads_info(osRtxThread_t *threads)
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304 | {
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305 | while (threads != NULL) {
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306 | print_thread(threads);
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307 | threads = threads->thread_next;
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308 | }
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309 | }
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310 | #endif
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311 |
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312 | #ifndef NDEBUG
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313 | static void print_error_report(mbed_error_ctx *ctx, const char *error_msg)
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314 | {
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315 | uint32_t error_code = MBED_GET_ERROR_CODE(ctx->error_status);
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316 | uint32_t error_module = MBED_GET_ERROR_MODULE(ctx->error_status);
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317 |
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318 | mbed_error_printf("\n\n++ MbedOS Error Info ++\nError Status: 0x%X Code: %d Module: %d\nError Message: ", ctx->error_status, error_code, error_module);
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319 |
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320 | switch (error_code) {
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321 | //These are errors reported by kernel handled from mbed_rtx_handlers
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322 | case MBED_ERROR_CODE_RTOS_EVENT:
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323 | mbed_error_printf("Kernel Error: 0x%X, ", ctx->error_value);
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324 | break;
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325 |
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326 | case MBED_ERROR_CODE_RTOS_THREAD_EVENT:
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327 | mbed_error_printf("Thread: 0x%X, ", ctx->error_value);
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328 | break;
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329 |
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330 | case MBED_ERROR_CODE_RTOS_MUTEX_EVENT:
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331 | mbed_error_printf("Mutex: 0x%X, ", ctx->error_value);
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332 | break;
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333 |
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334 | case MBED_ERROR_CODE_RTOS_SEMAPHORE_EVENT:
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335 | mbed_error_printf("Semaphore: 0x%X, ", ctx->error_value);
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336 | break;
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337 |
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338 | case MBED_ERROR_CODE_RTOS_MEMORY_POOL_EVENT:
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339 | mbed_error_printf("MemoryPool: 0x%X, ", ctx->error_value);
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340 | break;
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341 |
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342 | case MBED_ERROR_CODE_RTOS_EVENT_FLAGS_EVENT:
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343 | mbed_error_printf("EventFlags: 0x%X, ", ctx->error_value);
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344 | break;
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345 |
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346 | case MBED_ERROR_CODE_RTOS_TIMER_EVENT:
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347 | mbed_error_printf("Timer: 0x%X, ", ctx->error_value);
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348 | break;
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349 |
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350 | case MBED_ERROR_CODE_RTOS_MESSAGE_QUEUE_EVENT:
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351 | mbed_error_printf("MessageQueue: 0x%X, ", ctx->error_value);
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352 | break;
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353 |
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354 | default:
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355 | //Nothing to do here, just print the error info down
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356 | break;
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357 | }
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358 | mbed_error_printf(error_msg);
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359 | mbed_error_printf("\nLocation: 0x%X", ctx->error_address);
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360 |
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361 | #if MBED_CONF_PLATFORM_ERROR_FILENAME_CAPTURE_ENABLED && !defined(NDEBUG)
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362 | if ((NULL != ctx->error_filename[0]) && (ctx->error_line_number != 0)) {
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363 | //for string, we must pass address of a ptr which has the address of the string
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364 | mbed_error_printf("\nFile:%s+%d", ctx->error_filename, ctx->error_line_number);
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365 | }
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366 | #endif
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367 |
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368 | mbed_error_printf("\nError Value: 0x%X", ctx->error_value);
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369 | #ifdef TARGET_CORTEX_M
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370 | mbed_error_printf("\nCurrent Thread: Id: 0x%X Entry: 0x%X StackSize: 0x%X StackMem: 0x%X SP: 0x%X ",
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371 | ctx->thread_id, ctx->thread_entry_address, ctx->thread_stack_size, ctx->thread_stack_mem, ctx->thread_current_sp);
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372 | #else
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373 | //For Cortex-A targets we dont have support to capture the current SP
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374 | mbed_error_printf("\nCurrent Thread: Id: 0x%X Entry: 0x%X StackSize: 0x%X StackMem: 0x%X ",
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375 | ctx->thread_id, ctx->thread_entry_address, ctx->thread_stack_size, ctx->thread_stack_mem);
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376 | #endif //TARGET_CORTEX_M
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377 |
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378 | #if MBED_CONF_PLATFORM_ERROR_ALL_THREADS_INFO && defined(MBED_CONF_RTOS_PRESENT)
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379 | mbed_error_printf("\nNext:");
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380 | print_thread(osRtxInfo.thread.run.next);
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381 |
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382 | mbed_error_printf("\nWait:");
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383 | osRtxThread_t *threads = (osRtxThread_t *)&osRtxInfo.thread.wait_list;
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384 | print_threads_info(threads);
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385 |
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386 | mbed_error_printf("\nDelay:");
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387 | threads = (osRtxThread_t *)&osRtxInfo.thread.delay_list;
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388 | print_threads_info(threads);
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389 |
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390 | mbed_error_printf("\nIdle:");
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391 | threads = (osRtxThread_t *)&osRtxInfo.thread.idle;
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392 | print_threads_info(threads);
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393 | #endif
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394 | mbed_error_printf(MBED_CONF_PLATFORM_ERROR_DECODE_HTTP_URL_STR, ctx->error_status);
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395 | mbed_error_printf("\n-- MbedOS Error Info --\n");
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396 | }
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397 | #endif //ifndef NDEBUG
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398 |
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399 | #if MBED_CONF_PLATFORM_ERROR_HIST_ENABLED
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400 | //Retrieve the error context from error log at the specified index
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401 | mbed_error_status_t mbed_get_error_hist_info(int index, mbed_error_ctx *error_info)
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402 | {
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403 | return mbed_error_hist_get(index, error_info);
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404 | }
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405 |
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406 | //Retrieve the error log count
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407 | int mbed_get_error_hist_count(void)
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408 | {
|
---|
409 | return mbed_error_hist_get_count();
|
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410 | }
|
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411 |
|
---|
412 | mbed_error_status_t mbed_save_error_hist(const char *path)
|
---|
413 | {
|
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414 | mbed_error_status_t ret = MBED_SUCCESS;
|
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415 | mbed_error_ctx ctx = {0};
|
---|
416 | int log_count = mbed_error_hist_get_count();
|
---|
417 | FILE *error_log_file = NULL;
|
---|
418 |
|
---|
419 | //Ensure path is valid
|
---|
420 | if (path == NULL) {
|
---|
421 | ret = MBED_MAKE_ERROR(MBED_MODULE_PLATFORM, MBED_ERROR_CODE_INVALID_ARGUMENT);
|
---|
422 | goto exit;
|
---|
423 | }
|
---|
424 |
|
---|
425 | //Open the file for saving the error log info
|
---|
426 | if ((error_log_file = fopen(path, "w")) == NULL) {
|
---|
427 | ret = MBED_MAKE_ERROR(MBED_MODULE_PLATFORM, MBED_ERROR_CODE_OPEN_FAILED);
|
---|
428 | goto exit;
|
---|
429 | }
|
---|
430 |
|
---|
431 | //First store the first and last errors
|
---|
432 | if (fprintf(error_log_file, "\nFirst Error: Status:0x%x ThreadId:0x%x Address:0x%x Value:0x%x\n",
|
---|
433 | (unsigned int)first_error_ctx.error_status,
|
---|
434 | (unsigned int)first_error_ctx.thread_id,
|
---|
435 | (unsigned int)first_error_ctx.error_address,
|
---|
436 | (unsigned int)first_error_ctx.error_value) <= 0) {
|
---|
437 | ret = MBED_MAKE_ERROR(MBED_MODULE_PLATFORM, MBED_ERROR_CODE_WRITE_FAILED);
|
---|
438 | goto exit;
|
---|
439 | }
|
---|
440 |
|
---|
441 | if (fprintf(error_log_file, "\nLast Error: Status:0x%x ThreadId:0x%x Address:0x%x Value:0x%x\n",
|
---|
442 | (unsigned int)last_error_ctx.error_status,
|
---|
443 | (unsigned int)last_error_ctx.thread_id,
|
---|
444 | (unsigned int)last_error_ctx.error_address,
|
---|
445 | (unsigned int)last_error_ctx.error_value) <= 0) {
|
---|
446 | ret = MBED_MAKE_ERROR(MBED_MODULE_PLATFORM, MBED_ERROR_CODE_WRITE_FAILED);
|
---|
447 | goto exit;
|
---|
448 | }
|
---|
449 |
|
---|
450 | //Update with error log info
|
---|
451 | while (--log_count >= 0) {
|
---|
452 | mbed_error_hist_get(log_count, &ctx);
|
---|
453 | //first line of file will be error log count
|
---|
454 | if (fprintf(error_log_file, "\n%d: Status:0x%x ThreadId:0x%x Address:0x%x Value:0x%x\n",
|
---|
455 | log_count,
|
---|
456 | (unsigned int)ctx.error_status,
|
---|
457 | (unsigned int)ctx.thread_id,
|
---|
458 | (unsigned int)ctx.error_address,
|
---|
459 | (unsigned int)ctx.error_value) <= 0) {
|
---|
460 | ret = MBED_MAKE_ERROR(MBED_MODULE_PLATFORM, MBED_ERROR_CODE_WRITE_FAILED);
|
---|
461 | goto exit;
|
---|
462 | }
|
---|
463 | }
|
---|
464 |
|
---|
465 | exit:
|
---|
466 | fclose(error_log_file);
|
---|
467 |
|
---|
468 | return ret;
|
---|
469 | }
|
---|
470 | #endif
|
---|
471 |
|
---|