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1 # Some useful commands for debugging emacs with gdb 4.14.* or better.
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2 # Install this as your .gdbinit file in your home directory.
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3 # If you have an older version of gdb 4.x, consider using the
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4 # file "gdbinit.pre-4.14" in the XEmacs src directory.
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5 # If you're one of the few who has an XEmacs compiled with
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6 # --use-union-type, you'll need to use the file "gdbinit.union".
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7 # Currently that file is of the pre-4.14 variety, but it should
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8 # be easy to update it to 4.14+, along the same lines as this file.
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9 #
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10 # See also question 2.1.15 of the XEmacs FAQ, titled
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11 # "How to Debug an XEmacs problem with a debugger".
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12
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13 set print union off
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14 set print pretty off
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15
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16 define temacs
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17 run -batch -l loadup.el run-temacs -q
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18 end
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19
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20 echo \n>>> Use the `temacs' command to run temacs\n\n
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21
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22 # if you use Purify, do this:
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23 # set env PURIFYOPTIONS -pointer-mask=0x0fffffff
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24
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25 ################ Print using the Lisp printer
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26
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27 define p1
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28 call debug_print ($arg0)
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29 printf "\n"
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30 end
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31
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32 define lbt
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33 # "&" to compensate for GDB struct-passing bug
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34 # but I've removed the &'s because it doesn't work with my GDB,
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35 # and not having them works fine.
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36 call Fbacktrace (Qexternal_debugging_output, Qt)
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37 end
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38
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39 ################ Print using GDB built-ins
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40
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41 define xint
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42 print ((int)($arg0 << 4))>>4
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43 end
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44
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45 define xbitvec
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46 print (struct Lisp_Bit_Vector *) ($arg0 & 0xFFFFFFF)
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47 end
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48
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49 define xbuffer
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50 print (struct buffer *) ($arg0 & 0xFFFFFFF)
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51 end
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52
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53 define xbytecode
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54 print (struct Lisp_Bytecode *) ($arg0 & 0xFFFFFFF)
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55 end
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56
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57 define xcharset
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58 print (struct Lisp_Charset *) ($arg0 & 0xFFFFFFF)
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59 end
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60
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61 define xchartab
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62 print (struct Lisp_Char_Table *) ($arg0 & 0xFFFFFFF)
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63 end
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64
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65 define xchartabentry
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66 print (struct Lisp_Char_Table_Entry *) ($arg0 & 0xFFFFFFF)
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67 end
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68
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69 define xcodesys
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70 print (struct Lisp_Coding_System *) ($arg0 & 0xFFFFFFF)
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71 end
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72
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73 define xcolorinst
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74 print (struct Lisp_Color_Instance *) ($arg0 & 0xFFFFFFF)
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75 end
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76
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77 define xcons
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78 print (struct Lisp_Cons *) ($arg0 & 0xFFFFFFF)
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79 end
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80
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81 define xdevice
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82 print (struct device *) ($arg0 & 0xFFFFFFF)
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83 end
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84
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85 define xevent
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86 print (struct Lisp_Event *) ($arg0 & 0xFFFFFFF)
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87 end
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88
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89 define xextent
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90 print (struct extent *) ($arg0 & 0xFFFFFFF)
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91 end
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92
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93 define xextentaux
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94 print (struct extent_auxiliary *) ($arg0 & 0xFFFFFFF)
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95 end
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96
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97 define xextentinfo
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98 print (struct extent_info *) ($arg0 & 0xFFFFFFF)
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99 end
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100
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101 define xfloat
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102 print (struct Lisp_Float *) ($arg0 & 0xFFFFFFF)
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103 output (double) $arg0->data.d
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104 echo \n
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105 end
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106
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107 define xfontinst
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108 print (struct Lisp_Font_Instance *) ($arg0 & 0xFFFFFFF)
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109 end
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110
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111 define xframe
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112 print (struct frame *) ($arg0 & 0xFFFFFFF)
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113 end
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114
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115 define xglyph
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116 print (struct Lisp_Glyph *) ($arg0 & 0xFFFFFFF)
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117 end
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118
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119 define xhashtable
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120 print (struct hashtable_struct *) ($arg0 & 0xFFFFFFF)
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121 end
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122
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123 define ximageinst
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124 print (struct Lisp_Image_Instance *) ($arg0 & 0xFFFFFFF)
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125 end
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126
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127 define xkeymap
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128 print (struct keymap *) ($arg0 & 0xFFFFFFF)
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129 end
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130
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131 define xlstream
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132 print (struct lstream *) ($arg0 & 0xFFFFFFF)
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133 end
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134
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135 define xmarker
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136 print (struct Lisp_Marker *) ($arg0 & 0xFFFFFFF)
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137 end
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138
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139 define xmenubardata
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140 print (struct menubar_data *) ($arg0 & 0xFFFFFFF)
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141 end
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142
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143 define xopaque
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144 print (struct Lisp_Opaque *) ($arg0 & 0xFFFFFFF)
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145 end
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146
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147 define xprocess
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148 print (struct Lisp_Process *) ($arg0 & 0xFFFFFFF)
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149 end
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150
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151 define xrangetab
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152 print (struct Lisp_Range_Table *) ($arg0 & 0xFFFFFFF)
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153 end
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154
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155 define xspec
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156 print (struct Lisp_Specifier *) ($arg0 & 0xFFFFFFF)
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157 end
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158
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159 define xstring
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160 print (struct Lisp_String *) ($arg0 & 0xFFFFFFF)
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161 output (char *) $arg0->_data
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162 echo \n
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163 end
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164
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165 define xsubr
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166 print (struct Lisp_Subr *) ($arg0 & 0xFFFFFFF)
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167 end
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168
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169 define xsubwindow
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170 print (struct Lisp_Subwindow *) ($arg0 & 0xFFFFFFF)
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171 end
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172
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173 define xsymbol
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174 set $tem = (struct Lisp_Symbol *) ($arg0 & 0xFFFFFFF)
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175 output $tem->name->_data
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176 printf "\n"
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177 print $tem
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178 end
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179
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180 define xtoolbarbutton
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181 print (struct toolbar_button *) ($arg0 & 0xFFFFFFF)
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182 end
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183
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184 define xtoolbardata
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185 print (struct toolbar_data *) ($arg0 & 0xFFFFFFF)
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186 end
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187
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188 define xtooltalkmess
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189 print (struct Lisp_Tooltalk_Message *) ($arg0 & 0xFFFFFFF)
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190 end
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191
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192 define xtooltalkpatt
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193 print (struct Lisp_Tooltalk_Pattern *) ($arg0 & 0xFFFFFFF)
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194 end
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195
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196 define xvector
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197 print (struct Lisp_Vector *) ($arg0 & 0xFFFFFFF)
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198 end
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199
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200 define xwindow
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201 print (struct window *) ($arg0 & 0xFFFFFFF)
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202 end
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203
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204 define xwindowconfig
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205 print (struct window_config *) ($arg0 & 0xFFFFFFF)
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206 end
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207
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208 define xrecord
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209 print ((struct lrecord_header *) ($arg0 & 0xFFFFFFF))
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210 output (((struct lrecord_header *) ($arg0 & 0xFFFFFFF))->implementation->name)
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211 echo \n
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212 if ((struct lrecord_header *) ($arg0 & 0xFFFFFFF))->implementation == lrecord_symbol
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213 xsymbol $arg0
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214 else
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215 if ((struct lrecord_header *) ($arg0 & 0xFFFFFFF))->implementation == lrecord_extent
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216 xextent $arg0
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217 else
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218 if ((struct lrecord_header *) ($arg0 & 0xFFFFFFF))->implementation == lrecord_marker
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219 xmarker $arg0
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220 else
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221 if ((struct lrecord_header *) ($arg0 & 0xFFFFFFF))->implementation == lrecord_event
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222 xevent $arg0
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223 else
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224 if ((struct lrecord_header *) ($arg0 & 0xFFFFFFF))->implementation == lrecord_buffer
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225 xbuffer $arg0
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226 else
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227 if ((struct lrecord_header *) ($arg0 & 0xFFFFFFF))->implementation == lrecord_window
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228 xwindow $arg0
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229 else
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230 if ((struct lrecord_header *) ($arg0 & 0xFFFFFFF))->implementation == lrecord_frame
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231 xframe $arg0
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232 else
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233 if ((struct lrecord_header *) ($arg0 & 0xFFFFFFF))->implementation == lrecord_device
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234 xdevice $arg0
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235 else
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236 if ((struct lrecord_header *) ($arg0 & 0xFFFFFFF))->implementation == lrecord_console
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237 xconsole $arg0
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238 else
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239 if ((struct lrecord_header *) ($arg0 & 0xFFFFFFF))->implementation == lrecord_process
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240 xprocess $arg0
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241 else
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242 if ((struct lrecord_header *) ($arg0 & 0xFFFFFFF))->implementation == lrecord_subr
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243 xsubr $arg0
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244 else
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245 if ((struct lrecord_header *) ($arg0 & 0xFFFFFFF))->implementation == lrecord_compiled_function
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246 xbytecode $arg0
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247 else
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248 if ((struct lrecord_header *) ($arg0 & 0xFFFFFFF))->implementation == lrecord_window_configuration
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249 xwindowconfig $arg0
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250 else
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251 if ((struct lrecord_header *) ($arg0 & 0xFFFFFFF))->implementation == lrecord_float
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252 xfloat $arg0
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253 else
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254 if ((struct lrecord_header *) ($arg0 & 0xFFFFFFF))->implementation == lrecord_opaque
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255 xopaque $arg0
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256 else
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257 if ((struct lrecord_header *) ($arg0 & 0xFFFFFFF))->implementation == lrecord_glyph
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258 xglyph $arg0
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259 else
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260 if ((struct lrecord_header *) ($arg0 & 0xFFFFFFF))->implementation == lrecord_keymap
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261 xkeymap $arg0
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262 else
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263 if ((struct lrecord_header *) ($arg0 & 0xFFFFFFF))->implementation == lrecord_lstream
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264 xlstream $arg0
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265 else
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266 if ((struct lrecord_header *) ($arg0 & 0xFFFFFFF))->implementation == lrecord_bit_vector
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267 xbitvec $arg0
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268 end
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269 end
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270 end
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271 end
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272 end
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273 end
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274 end
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275 end
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276 end
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277 end
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278 end
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279 end
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280 end
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281 end
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282 end
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283 end
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284 end
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285 end
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286 end
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287 end
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288
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289 define frob
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290 if (enum Lisp_Type) (($arg0 >> 28) & 7) == Lisp_Int
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291 xint $arg0
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292 else
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293 if (enum Lisp_Type) (($arg0 >> 28) & 7) == Lisp_String
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294 xstring $arg0
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295 else
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296 if (enum Lisp_Type) (($arg0 >> 28) & 7) == Lisp_Cons
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297 xcons $arg0
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298 else
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299 if (enum Lisp_Type) (($arg0 >> 28) & 7) == Lisp_Vector
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300 xvector $arg0
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301 else
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302 if (enum Lisp_Type) (($arg0 >> 28) & 7) == Lisp_Record
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303 xrecord $arg0
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304 else
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305 printf "Unknown type?\n"
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306 end
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307 end
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308 end
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309 end
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310 end
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311 end
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312
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313 ################ Miscellaneous
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314
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315 define xtype
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316 # this is really xgctype, as we mask off the mark bit
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317 output (enum Lisp_Type) (($arg0 >> 28) & 7)
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318 echo \n
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319 end
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320
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321 define xmarkbit
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322 print ($arg0 >> 31)
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323 end
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324
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325 define nilp
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326 print $arg0 == Qnil
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327 end
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328
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329 define xcar
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330 frob ((struct Lisp_Cons *) ($arg0 & 0xFFFFFFF))->car
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331 end
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332
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333 define xcdr
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334 frob ((struct Lisp_Cons *) ($arg0 & 0xFFFFFFF))->cdr
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335 end
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336
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337 set $vector_length_mask = ~(1<<31)
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338
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339 define string-length
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340 print ((struct Lisp_String *) ($arg0 & 0xFFFFFFF))->_size & $vector_length_mask
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341 end
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342
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343 define string-contents
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344 print (char *) ((struct Lisp_String *) ($ & 0xFFFFFFF))->_data
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345 end
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346
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347 define vector-length
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348 print ((struct Lisp_Vector *) ($ & 0xFFFFFFF))->size & $vector_length_mask
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349 end
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350
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351 define vector-contents
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352 set $tem = (struct Lisp_Vector *) ($ & 0xFFFFFFF)
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353 print *($tem->contents) @ ($tem->size & $vector_length_mask)
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354 set $ = $tem->contents
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355 end
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356
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357 define symbol-name
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358 set $tem = ((struct Lisp_Symbol *) ($ & 0xFFFFFFF))->name
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359 # output *($tem->_data) @ ($tem->_size & $vector_length_mask)
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360 output ($tem->_data)
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361 echo \n
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362 set $type = Lisp_String
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363 echo \n
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364 end
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365
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366 define symbol-value
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367 set $tem = ((struct Lisp_Symbol *) ($ & 0xFFFFFFF))->value
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368 end
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369
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370 define symbol-function
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371 set $tem = ((struct Lisp_Symbol *) ($ & 0xFFFFFFF))->function
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372 end
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373
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374 define symbol-plist
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375 set $tem = ((struct Lisp_Symbol *) ($ & 0xFFFFFFF))->plist
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376 end
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377
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378 define wtype
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379 p $->core.widget_class->core_class.class_name
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380 end
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381
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382 define xtname
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383 print XrmQuarkToString(((Object)($))->object.xrm_name)
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384 end
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385
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386 #
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387 # GDB, with the losing command-line parser that it has,
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388 # cannot handle nested blocks.
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389 #
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390 define breaks
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391
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392 br Fsignal
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393 # command
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394 # bt 3
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395 # p sig
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396 # xsymbol
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397 # end
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398
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399 br Fkill_emacs
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400 # command
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401 # bt 3
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402 # end
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403
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404 br assertion_failed
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405 # command
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406 # bt 3
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407 # end
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408
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409 end
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