1 | /************************************************************************** |
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2 | * |
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3 | * Copyright (c) 2013 Alcatel-Lucent |
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4 | * |
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5 | * Alcatel Lucent licenses this file to You under the Apache License, |
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6 | * Version 2.0 (the "License"); you may not use this file except in |
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7 | * compliance with the License. A copy of the License is contained the |
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8 | * file LICENSE at the top level of this repository. |
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9 | * You may also obtain a copy of the License at: |
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10 | * |
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11 | * http://www.apache.org/licenses/LICENSE-2.0 |
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12 | * |
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13 | * Unless required by applicable law or agreed to in writing, software |
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14 | * distributed under the License is distributed on an "AS IS" BASIS, |
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15 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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16 | * See the License for the specific language governing permissions and |
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17 | * limitations under the License. |
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18 | * |
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19 | ************************************************************************** |
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20 | * |
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21 | * FILENAME_HERE |
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22 | * |
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23 | * DESCRIPTION_HERE |
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24 | * |
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25 | * Original author: Ed Sutter (ed.sutter@alcatel-lucent.com) |
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26 | * |
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27 | */ |
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28 | |
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29 | #include "config.h" |
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30 | #include "arm.h" |
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31 | #include "stddefs.h" |
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32 | #include "genlib.h" |
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33 | #include "warmstart.h" |
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34 | |
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35 | ulong ExceptionAddr; |
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36 | int ExceptionType; |
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37 | |
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38 | #define PRIx32 "lx" |
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39 | #define PRIxPTR "lx" |
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40 | |
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41 | /* Taken from RTEMS cpukit/score/cpu/arm/arm-exception-frame-print.c */ |
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42 | static void _CPU_Exception_frame_print( const CPU_Exception_frame *frame ) |
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43 | { |
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44 | printf( |
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45 | "\n" |
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46 | "R0 = 0x%08" PRIx32 " R8 = 0x%08" PRIx32 "\n" |
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47 | "R1 = 0x%08" PRIx32 " R9 = 0x%08" PRIx32 "\n" |
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48 | "R2 = 0x%08" PRIx32 " R10 = 0x%08" PRIx32 "\n" |
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49 | "R3 = 0x%08" PRIx32 " R11 = 0x%08" PRIx32 "\n" |
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50 | "R4 = 0x%08" PRIx32 " R12 = 0x%08" PRIx32 "\n" |
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51 | "R5 = 0x%08" PRIx32 " SP = 0x%08" PRIx32 "\n" |
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52 | "R6 = 0x%08" PRIx32 " LR = 0x%08" PRIxPTR "\n" |
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53 | "R7 = 0x%08" PRIx32 " PC = 0x%08" PRIxPTR "\n" |
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54 | "VEC = 0x%08" PRIxPTR "\n", |
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55 | frame->register_r0, |
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56 | frame->register_r8, |
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57 | frame->register_r1, |
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58 | frame->register_r9, |
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59 | frame->register_r2, |
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60 | frame->register_r10, |
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61 | frame->register_r3, |
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62 | frame->register_r11, |
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63 | frame->register_r4, |
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64 | frame->register_r12, |
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65 | frame->register_r5, |
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66 | frame->register_sp, |
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67 | frame->register_r6, |
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68 | (uint32_t) frame->register_lr, |
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69 | frame->register_r7, |
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70 | (uint32_t) frame->register_pc, |
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71 | (uint32_t) frame->vector |
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72 | ); |
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73 | } |
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74 | |
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75 | /*********************************************************************** |
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76 | * |
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77 | * umon_exception() |
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78 | * Default exception handler used by the low level code in vectors_arm.S. |
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79 | */ |
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80 | void |
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81 | umon_exception(CPU_Exception_frame *frame) |
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82 | { |
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83 | _CPU_Exception_frame_print(frame); |
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84 | |
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85 | ExceptionAddr = (uint32_t) frame->register_pc; |
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86 | ExceptionType = frame->vector; |
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87 | |
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88 | monrestart(EXCEPTION); |
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89 | } |
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90 | |
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91 | /*********************************************************************** |
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92 | * |
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93 | * ExceptionType2String(): |
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94 | * This function simply returns a string that verbosely describes |
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95 | * the incoming exception type (vector number). |
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96 | */ |
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97 | char * |
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98 | ExceptionType2String(int type) |
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99 | { |
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100 | char *string; |
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101 | |
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102 | switch(type) { |
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103 | case EXCTYPE_UNDEF: |
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104 | string = "Undefined instruction"; |
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105 | break; |
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106 | case EXCTYPE_ABORTP: |
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107 | string = "Abort prefetch"; |
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108 | break; |
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109 | case EXCTYPE_ABORTD: |
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110 | string = "Abort data"; |
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111 | break; |
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112 | case EXCTYPE_IRQ: |
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113 | string = "IRQ"; |
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114 | break; |
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115 | case EXCTYPE_FIRQ: |
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116 | string = "Fast IRQ"; |
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117 | break; |
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118 | case EXCTYPE_NOTASSGN: |
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119 | string = "Not assigned"; |
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120 | break; |
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121 | case EXCTYPE_SWI: |
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122 | string = "Software Interrupt"; |
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123 | break; |
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124 | default: |
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125 | string = "???"; |
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126 | break; |
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127 | } |
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128 | return(string); |
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129 | } |
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130 | |
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131 | void |
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132 | vinit(void) |
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133 | { |
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134 | } |
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