1 | # |
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2 | # GDB Init script for the Coldfire 5206e processor. |
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3 | # |
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4 | # The main purpose of this script is to perform minimum initialization of |
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5 | # processor so code can be loaded. Also, exception handling is performed. |
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6 | # |
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7 | |
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8 | # Copyright (C) OKTET Ltd., St.-Petersburg, Russia |
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9 | # Author: Victor V. Vengerov <vvv@oktet.ru> |
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10 | # |
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11 | # This script partially based on gdb scripts written by |
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12 | # Eric Norum, <eric@norum.ca> |
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13 | # |
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14 | # The license and distribution terms for this file may be |
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15 | # found in the file LICENSE in this distribution or at |
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16 | # http://www.rtems.org/license/LICENSE. |
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17 | # |
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18 | |
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19 | define addresses |
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20 | |
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21 | set $mbar = 0x10000001 |
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22 | set $simr = $mbar - 1 + 0x003 |
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23 | set $icr1 = $mbar - 1 + 0x014 |
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24 | set $icr2 = $mbar - 1 + 0x015 |
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25 | set $icr3 = $mbar - 1 + 0x016 |
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26 | set $icr4 = $mbar - 1 + 0x017 |
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27 | set $icr5 = $mbar - 1 + 0x018 |
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28 | set $icr6 = $mbar - 1 + 0x019 |
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29 | set $icr7 = $mbar - 1 + 0x01A |
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30 | set $icr8 = $mbar - 1 + 0x01B |
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31 | set $icr9 = $mbar - 1 + 0x01C |
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32 | set $icr10 = $mbar - 1 + 0x01D |
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33 | set $icr11 = $mbar - 1 + 0x01E |
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34 | set $icr12 = $mbar - 1 + 0x01F |
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35 | set $icr13 = $mbar - 1 + 0x020 |
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36 | set $imr = $mbar - 1 + 0x036 |
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37 | set $ipr = $mbar - 1 + 0x03A |
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38 | set $rsr = $mbar - 1 + 0x040 |
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39 | set $sypcr = $mbar - 1 + 0x041 |
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40 | set $swivr = $mbar - 1 + 0x042 |
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41 | set $swsr = $mbar - 1 + 0x043 |
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42 | set $dcrr = $mbar - 1 + 0x046 |
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43 | set $dctr = $mbar - 1 + 0x04A |
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44 | set $dcar0 = $mbar - 1 + 0x04C |
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45 | set $dcmr0 = $mbar - 1 + 0x050 |
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46 | set $dccr0 = $mbar - 1 + 0x057 |
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47 | set $dcar1 = $mbar - 1 + 0x058 |
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48 | set $dcmr1 = $mbar - 1 + 0x05C |
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49 | set $dccr1 = $mbar - 1 + 0x063 |
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50 | set $csar0 = $mbar - 1 + 0x064 |
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51 | set $csmr0 = $mbar - 1 + 0x068 |
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52 | set $cscr0 = $mbar - 1 + 0x06E |
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53 | set $csar1 = $mbar - 1 + 0x070 |
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54 | set $csmr1 = $mbar - 1 + 0x074 |
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55 | set $cscr1 = $mbar - 1 + 0x07A |
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56 | set $csar2 = $mbar - 1 + 0x07C |
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57 | set $csmr2 = $mbar - 1 + 0x080 |
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58 | set $cscr2 = $mbar - 1 + 0x086 |
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59 | set $csar3 = $mbar - 1 + 0x088 |
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60 | set $csmr3 = $mbar - 1 + 0x08C |
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61 | set $cscr3 = $mbar - 1 + 0x092 |
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62 | set $csar4 = $mbar - 1 + 0x094 |
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63 | set $csmr4 = $mbar - 1 + 0x098 |
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64 | set $cscr4 = $mbar - 1 + 0x09E |
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65 | set $csar5 = $mbar - 1 + 0x0A0 |
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66 | set $csmr5 = $mbar - 1 + 0x0A4 |
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67 | set $cscr5 = $mbar - 1 + 0x0AA |
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68 | set $csar6 = $mbar - 1 + 0x0AC |
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69 | set $csmr6 = $mbar - 1 + 0x0B0 |
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70 | set $cscr6 = $mbar - 1 + 0x0B6 |
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71 | set $csar7 = $mbar - 1 + 0x0B8 |
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72 | set $csmr7 = $mbar - 1 + 0x0BC |
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73 | set $cscr7 = $mbar - 1 + 0x0C2 |
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74 | set $dmcr = $mbar - 1 + 0x0C6 |
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75 | set $par = $mbar - 1 + 0x0CA |
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76 | set $tmr1 = $mbar - 1 + 0x100 |
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77 | set $trr1 = $mbar - 1 + 0x104 |
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78 | set $tcr1 = $mbar - 1 + 0x108 |
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79 | set $tcn1 = $mbar - 1 + 0x10C |
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80 | set $ter1 = $mbar - 1 + 0x111 |
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81 | set $tmr2 = $mbar - 1 + 0x120 |
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82 | set $trr2 = $mbar - 1 + 0x124 |
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83 | set $tcr2 = $mbar - 1 + 0x128 |
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84 | set $tcn2 = $mbar - 1 + 0x12C |
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85 | set $ter2 = $mbar - 1 + 0x131 |
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86 | |
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87 | end |
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88 | |
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89 | # |
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90 | # Setup CSAR0 for the FLASH ROM. |
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91 | # |
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92 | |
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93 | define setup-cs |
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94 | |
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95 | set *((short*) $csar0) = 0xffe0 |
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96 | set *((int*) $csmr0) = 0x000f0000 |
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97 | set *((short*) $cscr0) = 0x1da3 |
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98 | set *((short*) $csar1) = 0x5000 |
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99 | set *((int*) $csmr1) = 0x00000000 |
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100 | set *((short*) $cscr1) = 0x3d43 |
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101 | set *((short*) $csar2) = 0x3000 |
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102 | set *((int*) $csmr2) = 0x000f0000 |
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103 | set *((short*) $cscr2) = 0x1903 |
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104 | set *((short*) $csar3) = 0x4000 |
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105 | set *((int*) $csmr3) = 0x000f0000 |
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106 | set *((short*) $cscr3) = 0x0083 |
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107 | |
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108 | end |
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109 | |
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110 | # |
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111 | # Setup the DRAM controller. |
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112 | # |
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113 | |
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114 | define setup-dram |
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115 | |
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116 | set *((short*) $dcrr) = 24 |
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117 | set *((short*) $dctr) = 0x0000 |
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118 | set *((short*) $dcar0) = 0x0000 |
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119 | set *((long*) $dcmr0) = 0x000e0000 |
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120 | set *((char*) $dccr0) = 0x07 |
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121 | set *((short*) $dcar1) = 0x0000 |
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122 | set *((long*) $dcmr1) = 0x00000000 |
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123 | set *((char*) $dccr1) = 0x00 |
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124 | |
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125 | end |
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126 | |
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127 | |
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128 | # |
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129 | # Wake up the board |
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130 | # |
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131 | |
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132 | define initboard |
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133 | |
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134 | addresses |
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135 | setup-cs |
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136 | # setup-dram |
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137 | |
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138 | end |
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139 | |
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140 | define ss |
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141 | si |
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142 | x/i $pc |
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143 | end |
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144 | |
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145 | # |
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146 | # Display exception information |
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147 | # |
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148 | define exception-info |
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149 | set $excpc = *(unsigned int *)($sp+4) |
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150 | set $excfmt = (*(unsigned int *)$sp >> 28) & 0x0f |
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151 | set $excfs = ((*(unsigned int *)$sp >> 24) & 0x0c) | \ |
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152 | ((*(unsigned int *)$sp >> 16) & 0x03) |
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153 | set $excvec = (*(unsigned int *)$sp >> 18) & 0xff |
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154 | set $excsr = *(unsigned int *)$sp & 0xffff |
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155 | |
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156 | printf "EXCEPTION -- SR:0x%X PC:0x%X FRAME:0x%X VECTOR:%d\n", \ |
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157 | $excsr, $excpc, $sp, $excvec |
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158 | if $excvec == 2 |
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159 | printf "Access error exception" |
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160 | end |
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161 | if $excvec == 3 |
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162 | printf "Address error exception" |
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163 | end |
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164 | if $excvec == 4 |
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165 | printf "Illegal instruction exception" |
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166 | end |
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167 | if $excvec == 8 |
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168 | printf "Privelege violation exception" |
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169 | end |
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170 | if $excvec == 9 |
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171 | printf "Trace exception" |
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172 | end |
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173 | if $excvec == 10 |
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174 | printf "Unimplemented LINE-A opcode exception" |
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175 | end |
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176 | if $excvec == 11 |
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177 | printf "Unimplemented LINE-F opcode exception" |
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178 | end |
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179 | if $excvec == 12 |
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180 | printf "Debug interrupt" |
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181 | end |
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182 | if $excvec == 14 |
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183 | printf "Format error exception" |
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184 | end |
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185 | if $excfs == 0x04 |
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186 | printf " on instruction fetch" |
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187 | end |
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188 | if $excfs == 0x08 |
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189 | printf " on operand write" |
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190 | end |
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191 | if $excfs == 0x09 |
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192 | printf " on write to write-protected space" |
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193 | end |
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194 | if $excfs == 0x0c |
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195 | printf " on operand read" |
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196 | end |
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197 | printf "\n" |
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198 | x/4i $excpc |
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199 | set $pc=$excpc |
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200 | set $sp=$sp+8 |
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201 | end |
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202 | |
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203 | target bdm /dev/bdmcf0 |
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204 | initboard |
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205 | load |
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206 | set $pc=start |
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207 | set $sp=0x20001ffc |
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208 | b bsp_cleanup |
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209 | b _stop |
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210 | b _unexp_exception |
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211 | commands |
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212 | silent |
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213 | exception-info |
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214 | end |
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215 | b _unexp_int |
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216 | b _reserved_int |
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217 | b _spurious_int |
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