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438
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1 # -*- ksh -*-
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2 # Copyright (C) 1998 Free Software Foundation, Inc.
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3
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4 # This file is part of XEmacs.
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5
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6 # XEmacs is free software; you can redistribute it and/or modify it
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7 # under the terms of the GNU General Public License as published by the
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8 # Free Software Foundation; either version 2, or (at your option) any
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9 # later version.
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10
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11 # XEmacs is distributed in the hope that it will be useful, but WITHOUT
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12 # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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13 # FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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14 # for more details.
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15
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16 # You should have received a copy of the GNU General Public License
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17 # along with XEmacs; see the file COPYING. If not, write to
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18 # the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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19 # Boston, MA 02111-1307, USA.
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20
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21 # Author: Martin Buchholz
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22
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23 # You can use this file to debug XEmacs using Sun WorkShop's dbx.
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24
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25 # Some functions defined here require a running process, but most
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26 # don't. Considerable effort has been expended to this end.
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27
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28 # Since this file is called `.dbxrc', it will be read by dbx
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29 # automatically when dbx is run in the build directory, which is where
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30 # developers usually debug their xemacs.
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31
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32 # See also the comments in .gdbinit.
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33
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34 # See also the question of the XEmacs FAQ, titled
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35 # "How to Debug an XEmacs problem with a debugger".
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36
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37 # gdb sources the ./.gdbinit in _addition_ to ~/.gdbinit.
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38 # But dbx does _not_ source ~/.dbxrc if it found ./.dbxrc.
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39 # So we simulate the gdb algorithm by doing it ourselves here.
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40 if test -r $HOME/.dbxrc; then . $HOME/.dbxrc; fi
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41
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42 ignore POLL
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43 ignore IO
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44
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45 document lbt << 'end'
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46 Usage: lbt
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47 Print the current Lisp stack trace.
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48 Requires a running xemacs process.
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49 end
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50
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51 function lbt {
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52 call debug_backtrace()
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53 }
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54
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55 document ldp << 'end'
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56 Usage: ldp lisp_object
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57 Print a Lisp Object value using the Lisp printer.
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58 Requires a running xemacs process.
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59 end
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60
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61 function ldp {
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62 call debug_print ($1);
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63 }
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64
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65 # A bug in dbx prevents string variables from having values beginning with `-'!!
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66 function XEmacsInit {
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67 function ToInt { eval "$1=\$[(int) $1]"; }
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68 ToInt dbg_USE_UNION_TYPE
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69 ToInt Lisp_Type_Int
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70 ToInt Lisp_Type_Char
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71 ToInt Lisp_Type_Cons
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72 ToInt Lisp_Type_String
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73 ToInt Lisp_Type_Vector
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74 ToInt Lisp_Type_Symbol
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75 ToInt Lisp_Type_Record
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76 ToInt dbg_valbits
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77 ToInt dbg_gctypebits
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78 function ToLong { eval "$1=\$[(unsigned long) $1]"; }
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79 ToLong dbg_valmask
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80 ToLong dbg_typemask
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81 xemacs_initted=yes
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82 }
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83
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84 function printvar {
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85 for i in $*; do eval "echo $i=\$$i"; done
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86 }
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87
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88 document decode_object << 'end'
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89 Usage: decode_object lisp_object
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90 Extract implementation information from a Lisp Object.
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91 Defines variables $val, $type and $imp.
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92 end
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93
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94 # Various dbx bugs cause ugliness in following code
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95 function decode_object {
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96 if test -z "$xemacs_initted"; then XEmacsInit; fi;
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97 if test $dbg_USE_UNION_TYPE = 1; then
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98 # Repeat after me... dbx sux, dbx sux, dbx sux...
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99 # Allow both `pobj Qnil' and `pobj 0x82746834' to work
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100 case $(whatis $1) in
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101 *Lisp_Object*) obj="$[(unsigned long)(($1).i)]";;
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102 *) obj="$[(unsigned long)($1)]";;
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103 esac
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104 else
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105 obj="$[(unsigned long)($1)]";
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106 fi
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107 if test $[(int)($obj & 1)] = 1; then
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108 # It's an int
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109 val=$[(long)(((unsigned long long)$obj) >> 1)]
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110 type=$Lisp_Type_Int
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111 else
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112 type=$[(int)(((void*)$obj) & $dbg_typemask)]
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113 if test $type = $Lisp_Type_Char; then
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114 val=$[(void*)(long)(((unsigned long long)($obj & $dbg_valmask)) >> $dbg_gctypebits)]
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115 else
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116 # It's a record pointer
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117 val=$[(void*)$obj]
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118 if test "$val" = "(nil)"; then type=null_pointer; fi
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119 fi
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120 fi
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121
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122 if test $type = $Lisp_Type_Record; then
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123 typeset lheader="((struct lrecord_header *) $val)"
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124 imp=$[(void*)(lrecord_implementations_table[$lheader->type])]
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125 else
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126 imp="0xdeadbeef"
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127 fi
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128 # printvar obj val type imp
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129 }
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130
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131 function xint {
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132 decode_object "$*"
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133 print (long) ($val)
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134 }
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135
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136 document xtype << 'end'
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137 Usage: xtype lisp_object
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138 Print the Lisp type of a lisp object.
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139 end
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140
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141 function xtype {
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142 decode_object "$*"
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143 if test $type = $Lisp_Type_Int; then echo "int"
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144 elif test $type = $Lisp_Type_Char; then echo "char"
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145 elif test $type = $Lisp_Type_Symbol; then echo "symbol"
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146 elif test $type = $Lisp_Type_String; then echo "string"
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147 elif test $type = $Lisp_Type_Vector; then echo "vector"
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148 elif test $type = $Lisp_Type_Cons; then echo "cons"
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149 elif test $type = null_pointer; then echo "null_pointer"
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150 else
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151 echo "record type with name: $[((struct lrecord_implementation *)$imp)->name]"
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152 fi
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153 }
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154
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155 function lisp-shadows {
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156 run -batch -vanilla -f list-load-path-shadows
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157 }
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158
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159 function environment-to-run-temacs {
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160 unset EMACSLOADPATH
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161 export EMACSBOOTSTRAPLOADPATH=../lisp/:..
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162 export EMACSBOOTSTRAPMODULEPATH=../modules/:..
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163 }
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164
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165 document run-temacs << 'end'
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166 Usage: run-temacs
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167 Run temacs interactively, like xemacs.
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168 Use this with debugging tools (like purify) that cannot deal with dumping,
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169 or when temacs builds successfully, but xemacs does not.
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170 end
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171
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172 function run-temacs {
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173 environment-to-run-temacs
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174 run -batch -l ../lisp/loadup.el run-temacs -q ${1+"$@"}
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175 }
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176
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177 document check-xemacs << 'end'
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178 Usage: check-xemacs
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179 Run the test suite. Equivalent to 'make check'.
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180 end
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181
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182 function check-xemacs {
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183 run -batch -l ../tests/automated/test-harness.el -f batch-test-emacs ../tests/automated
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184 }
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185
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186 document check-temacs << 'end'
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187 Usage: check-temacs
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188 Run the test suite on temacs. Equivalent to 'make check-temacs'.
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189 Use this with debugging tools (like purify) that cannot deal with dumping,
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190 or when temacs builds successfully, but xemacs does not.
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191 end
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192
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193 function check-temacs {
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194 run-temacs -q -batch -l ../tests/automated/test-harness.el -f batch-test-emacs ../tests/automated
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195 }
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196
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197 document update-elc << 'end'
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198 Usage: update-elc
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199 Run the core lisp byte compilation part of the build procedure.
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200 Use when debugging temacs, not xemacs!
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201 Use this when temacs builds successfully, but xemacs does not.
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202 end
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203
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204 function update-elc {
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205 environment-to-run-temacs
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206 run -batch -l ../lisp/update-elc.el
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207 }
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208
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209 document dump-temacs << 'end'
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210 Usage: dump-temacs
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211 Run the dumping part of the build procedure.
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212 Use when debugging temacs, not xemacs!
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213 Use this when temacs builds successfully, but xemacs does not.
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214 end
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215
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216 function dump-temacs {
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217 environment-to-run-temacs
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218 run -batch -l ../lisp/loadup.el dump
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219 }
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220
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221 function pstruct {
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222 xstruct="((struct $1 *) $val)"
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223 print $xstruct
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224 print *$xstruct
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225 }
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226
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227 function lrecord_type_p {
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228 if eval test -z \"\$lrecord_$1\" && test $imp = $[(void*)(&lrecord_$1)]; then return 0; else return 1; fi
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229 }
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230
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231 document pobj << 'end'
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232 Usage: pobj lisp_object
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233 Print the internal C representation of a Lisp Object.
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234 end
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235
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236 function pobj {
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237 decode_object $1
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238 if test $type = $Lisp_Type_Int; then
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239 print -f"Integer: %d" $val
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240 elif test $type = $Lisp_Type_Char; then
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241 if test $[$val > 32 && $val < 128] = 1; then
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242 print -f"Char: %c" $val
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243 else
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244 print -f"Char: %d" $val
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245 fi
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246 elif test $type = $Lisp_Type_String || lrecord_type_p string; then
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247 pstruct Lisp_String
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248 elif test $type = $Lisp_Type_Cons || lrecord_type_p cons; then
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249 pstruct Lisp_Cons
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250 elif test $type = $Lisp_Type_Symbol || lrecord_type_p symbol; then
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251 pstruct Lisp_Symbol
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252 echo "Symbol name: $[(char *)($xstruct->name->data)]"
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253 elif test $type = $Lisp_Type_Vector || lrecord_type_p vector; then
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254 pstruct Lisp_Vector
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255 echo "Vector of length $[$xstruct->size]"
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256 elif lrecord_type_p bit_vector; then
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257 pstruct Lisp_Bit_Vector
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258 elif lrecord_type_p buffer; then
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259 pstruct buffer
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260 elif lrecord_type_p char_table; then
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261 pstruct Lisp_Char_Table
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262 elif lrecord_type_p char_table_entry; then
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263 pstruct Lisp_Char_Table_Entry
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264 elif lrecord_type_p charset; then
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265 pstruct Lisp_Charset
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266 elif lrecord_type_p coding_system; then
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267 pstruct Lisp_Coding_System
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268 elif lrecord_type_p color_instance; then
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269 pstruct Lisp_Color_Instance
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270 elif lrecord_type_p command_builder; then
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271 pstruct command_builder
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272 elif lrecord_type_p compiled_function; then
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273 pstruct Lisp_Compiled_Function
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274 elif lrecord_type_p console; then
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275 pstruct console
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276 elif lrecord_type_p database; then
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277 pstruct Lisp_Database
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278 elif lrecord_type_p device; then
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279 pstruct device
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280 elif lrecord_type_p event; then
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281 pstruct Lisp_Event
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282 elif lrecord_type_p extent; then
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283 pstruct extent
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284 elif lrecord_type_p extent_auxiliary; then
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285 pstruct extent_auxiliary
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286 elif lrecord_type_p extent_info; then
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287 pstruct extent_info
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288 elif lrecord_type_p face; then
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289 pstruct Lisp_Face
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290 elif lrecord_type_p float; then
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291 pstruct Lisp_Float
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292 elif lrecord_type_p font_instance; then
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293 pstruct Lisp_Font_Instance
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294 elif lrecord_type_p frame; then
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295 pstruct frame
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296 elif lrecord_type_p glyph; then
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297 pstruct Lisp_Glyph
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298 elif lrecord_type_p hash_table; then
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299 pstruct Lisp_Hash_Table
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300 elif lrecord_type_p image_instance; then
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301 pstruct Lisp_Image_Instance
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302 elif lrecord_type_p keymap; then
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303 pstruct Lisp_Keymap
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304 elif lrecord_type_p lcrecord_list; then
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305 pstruct lcrecord_list
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306 elif lrecord_type_p lstream; then
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307 pstruct lstream
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308 elif lrecord_type_p marker; then
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309 pstruct Lisp_Marker
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310 elif lrecord_type_p opaque; then
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311 pstruct Lisp_Opaque
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312 elif lrecord_type_p opaque_ptr; then
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313 pstruct Lisp_Opaque_Ptr
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314 elif lrecord_type_p popup_data; then
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315 pstruct popup_data
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316 elif lrecord_type_p process; then
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317 pstruct Lisp_Process
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318 elif lrecord_type_p range_table; then
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319 pstruct Lisp_Range_Table
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320 elif lrecord_type_p specifier; then
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321 pstruct Lisp_Specifier
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322 elif lrecord_type_p subr; then
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323 pstruct Lisp_Subr
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324 elif lrecord_type_p symbol_value_buffer_local; then
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325 pstruct symbol_value_buffer_local
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326 elif lrecord_type_p symbol_value_forward; then
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327 pstruct symbol_value_forward
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328 elif lrecord_type_p symbol_value_lisp_magic; then
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329 pstruct symbol_value_lisp_magic
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330 elif lrecord_type_p symbol_value_varalias; then
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331 pstruct symbol_value_varalias
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332 elif lrecord_type_p toolbar_button; then
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333 pstruct toolbar_button
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334 elif lrecord_type_p tooltalk_message; then
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335 pstruct Lisp_Tooltalk_Message
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336 elif lrecord_type_p tooltalk_pattern; then
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337 pstruct Lisp_Tooltalk_Pattern
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338 elif lrecord_type_p weak_list; then
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339 pstruct weak_list
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340 elif lrecord_type_p window; then
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341 pstruct window
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342 elif lrecord_type_p window_configuration; then
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343 pstruct window_config
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344 elif test "$type" = "null_pointer"; then
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345 echo "Lisp Object is a null pointer!!"
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346 else
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347 echo "Unknown Lisp Object type"
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348 print $1
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349 fi
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350 }
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351
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352 function pproc {
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353 print *(`process.c`struct Lisp_Process*)$1 ;
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354 ldp "(`process.c`struct Lisp_Process*)$1->name" ;
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355 ldp "(`process.c`struct Lisp_Process*)$1->command" ;
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356 }
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357
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358 dbxenv suppress_startup_message 4.0
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359 dbxenv mt_watchpoints on
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360
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361 function dp_core {
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362 print ((struct x_frame *)(((struct frame*)(Fselected_frame(Qnil)&0x00FFFFFF))->frame_data))->widget->core
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363 }
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364
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365 # Barf!
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366 function print_shell {
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367 print *(`frame-x.c`TopLevelShellRec*) (((struct `frame-x.c`x_frame*) (((struct `frame-x.c`frame*) (Fselected_frame(Qnil)&0x00FFFFFF))->frame_data))->widget)
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368 }
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369
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370 # -------------------------------------------------------------
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371 # functions to test the debugging support itself.
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372 # If you change this file, make sure the following still work...
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373 # -------------------------------------------------------------
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374 function test_xtype {
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375 function doit { echo -n "$1: "; xtype "$1"; }
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376 test_various_objects
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377 }
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378
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379 function test_pobj {
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380 function doit { echo '==============================='; echo -n "$1: "; pobj "$1"; }
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381 test_various_objects
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382 }
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383
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384 function test_various_objects {
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385 doit Vemacs_major_version
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386 doit Vhelp_char
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387 doit Qnil
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388 doit Qunbound
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389 doit Vobarray
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390 doit Vall_weak_lists
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391 doit Vxemacs_codename
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392 }
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