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3092
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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
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41 #define NOT_C_CODE
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42 #include "config.h"
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43
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44 if test -r $HOME/.dbxrc; then . $HOME/.dbxrc; fi
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45
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46 dbxenv language_mode ansic
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47
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48 ignore POLL
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49 ignore IO
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50
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51 #ifdef VDB_POSIX
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52 ignore SIGSEGV SIGBUS
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53 #endif
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54
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55 document lbt << 'end'
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56 Usage: lbt
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57 Print the current Lisp stack trace.
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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 lbt {
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62 call debug_backtrace()
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63 }
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64
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65 document ldp << 'end'
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66 Usage: ldp lisp_object
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67 Print a Lisp Object value using the Lisp printer.
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68 Requires a running xemacs process.
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69 end
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70
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71 function ldp {
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72 call debug_print ($1);
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73 }
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74
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75 Lisp_Type_Int=-2
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76
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77 ## A bug in dbx prevents string variables from having values beginning with `-'!!
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78 function XEmacsInit {
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79 function ToInt { eval "$1=\$[(int) \`alloc.c\`$1]"; }
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80 ToInt dbg_USE_UNION_TYPE
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81 ToInt Lisp_Type_Char
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82 ToInt Lisp_Type_Record
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83 ToInt dbg_valbits
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84 ToInt dbg_gctypebits
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85 function ToLong { eval "$1=\$[(\`alloc.c\`unsigned long) \`alloc.c\`$1]"; }
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86 ToLong dbg_valmask
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87 ToLong dbg_typemask
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88 xemacs_initted=yes
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89 }
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90
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91 function printvar {
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92 for i in $*; do eval "echo $i=\$$i"; done
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93 }
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94
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95 document decode_object << 'end'
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96 Usage: decode_object lisp_object
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97 Extract implementation information from a Lisp Object.
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98 Defines variables $val, $type and $imp.
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99 end
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100
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101 ## Various dbx bugs cause ugliness in following code
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102 function decode_object {
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103 if test -z "$xemacs_initted"; then XEmacsInit; fi;
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104 if test $dbg_USE_UNION_TYPE = 1; then
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105 ## Repeat after me... dbx sux, dbx sux, dbx sux...
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106 ## Allow both `pobj Qnil' and `pobj 0x82746834' to work
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107 case $(whatis $1) in
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108 *Lisp_Object*) obj="$[(`alloc.c`unsigned long)(($1).i)]";;
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109 *) obj="$[(`alloc.c`unsigned long)($1)]";;
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110 esac
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111 else
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112 obj="$[(`alloc.c`unsigned long)($1)]";
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113 fi
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114 if test $[(int)($obj & 1)] = 1; then
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115 ## It's an int
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116 val=$[(long)(((unsigned long long)$obj) >> 1)]
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117 type=$Lisp_Type_Int
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118 else
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119 type=$[(int)(((void*)$obj) & $dbg_typemask)]
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120 if test $type = $Lisp_Type_Char; then
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121 val=$[(void*)(long)(((unsigned long long)($obj & $dbg_valmask)) >> $dbg_gctypebits)]
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122 else
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123 ## It's a record pointer
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124 val=$[(void*)$obj]
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125 if test "$val" = "(nil)"; then type=null_pointer; fi
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126 fi
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127 fi
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128
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129 if test $type = $Lisp_Type_Record; then
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130 lheader="((struct lrecord_header *) $val)"
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131 lrecord_type=$[(enum lrecord_type) $lheader->type]
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132 imp=$[(void*)(`alloc.c`lrecord_implementations_table[$lheader->type])]
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133 else
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134 lheader="((struct lrecord_header *) -1)"
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135 lrecord_type=-1
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136 imp="0xdeadbeef"
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137 fi
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138 ## printvar obj val type imp
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139 }
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140
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141 function xint {
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142 decode_object "$*"
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143 print (long) ($val)
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144 }
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145
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146 document xtype << 'end'
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147 Usage: xtype lisp_object
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148 Print the Lisp type of a lisp object.
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149 end
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150
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151 function xtype {
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152 decode_object "$*"
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153 if test $type = $Lisp_Type_Int; then echo "int"
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154 elif test $type = $Lisp_Type_Char; then echo "char"
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155 elif test $type = null_pointer; then echo "null_pointer"
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156 else
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157 echo "record type with name: $[((struct lrecord_implementation *)$imp)->name]"
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158 fi
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159 }
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160
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161 function lisp-shadows {
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162 run -batch -vanilla -f list-load-path-shadows
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163 }
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164
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165 function environment-to-run-temacs {
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166 unset EMACSLOADPATH
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167 export EMACSBOOTSTRAPLOADPATH=../lisp/:..
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168 export EMACSBOOTSTRAPMODULEPATH=../modules/:..
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169 }
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170
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171 document run-temacs << 'end'
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172 Usage: run-temacs
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173 Run temacs interactively, like xemacs.
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174 Use this with debugging tools (like purify) that cannot deal with dumping,
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175 or when temacs builds successfully, but xemacs does not.
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176 end
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177
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178 function run-temacs {
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179 environment-to-run-temacs
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180 run -nd -batch -l ../lisp/loadup.el run-temacs -q ${1+"$@"}
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181 }
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182
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183 document check-xemacs << 'end'
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184 Usage: check-xemacs
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185 Run the test suite. Equivalent to 'make check'.
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186 end
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187
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188 function check-xemacs {
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189 run -batch -l ../tests/automated/test-harness.el -f batch-test-emacs ../tests/automated
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190 }
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191
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192 document check-temacs << 'end'
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193 Usage: check-temacs
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194 Run the test suite on temacs. Equivalent to 'make check-temacs'.
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195 Use this with debugging tools (like purify) that cannot deal with dumping,
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196 or when temacs builds successfully, but xemacs does not.
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197 end
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198
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199 function check-temacs {
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200 run-temacs -q -batch -l ../tests/automated/test-harness.el -f batch-test-emacs ../tests/automated
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201 }
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202
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203 document update-elc << 'end'
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204 Usage: update-elc
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205 Run the core lisp byte compilation part of the build procedure.
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206 Use when debugging temacs, not xemacs!
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207 Use this when temacs builds successfully, but xemacs does not.
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208 end
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209
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210 function update-elc {
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211 environment-to-run-temacs
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212 run -nd -batch -l ../lisp/update-elc.el
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213 }
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214
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215 document dmp << 'end'
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216 Usage: dmp
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217 Run the dumping part of the build procedure.
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218 Use when debugging temacs, not xemacs!
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219 Use this when temacs builds successfully, but xemacs does not.
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220 end
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221
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222 function dmp {
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223 environment-to-run-temacs
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224 run -nd -batch -l ../lisp/loadup.el dump
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225 }
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226
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227 function pstruct { ## pstruct foo.c struct-name
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228 module "$1" > /dev/null
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229 type_ptr="((struct $2 *) $val)"
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230 print $type_ptr
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231 print *$type_ptr
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232 }
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233
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234 document pobj << 'end'
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235 Usage: pobj lisp_object
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236 Print the internal C representation of a Lisp Object.
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237 end
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238
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239 function pobj {
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240 decode_object $1
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241 if test $type = $Lisp_Type_Int; then
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242 print -f"Integer: %d" $val
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243 elif test $type = $Lisp_Type_Char; then
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244 if test $[$val > 32 && $val < 128] = 1; then
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245 print -f"Char: %c" $val
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246 else
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247 print -f"Char: %d" $val
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248 fi
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249 elif test $lrecord_type = lrecord_type_string; then
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250 pstruct alloc.c Lisp_String
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251 elif test $lrecord_type = lrecord_type_cons; then
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252 pstruct alloc.c Lisp_Cons
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253 elif test $lrecord_type = lrecord_type_symbol; then
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254 pstruct symbols.c Lisp_Symbol
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255 echo "Symbol name: $[(char *)($type_ptr->name->data)]"
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256 elif test $lrecord_type = lrecord_type_vector; then
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257 pstruct alloc.c Lisp_Vector
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258 echo "Vector of length $[$type_ptr->size]"
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259 elif test $lrecord_type = lrecord_type_bit_vector; then
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260 pstruct fns.c Lisp_Bit_Vector
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261 elif test $lrecord_type = lrecord_type_buffer; then
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262 pstruct buffer.c buffer
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263 elif test $lrecord_type = lrecord_type_char_table; then
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264 pstruct chartab.c Lisp_Char_Table
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265 elif test $lrecord_type = lrecord_type_char_table_entry; then
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266 pstruct chartab.c Lisp_Char_Table_Entry
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267 elif test $lrecord_type = lrecord_type_charset; then
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268 pstruct mule-charset.c Lisp_Charset
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269 elif test $lrecord_type = lrecord_type_coding_system; then
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270 pstruct file-coding.c Lisp_Coding_System
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271 elif test $lrecord_type = lrecord_type_color_instance; then
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272 pstruct objects.c Lisp_Color_Instance
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273 elif test $lrecord_type = lrecord_type_command_builder; then
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274 pstruct event-stream.c command_builder
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275 elif test $lrecord_type = lrecord_type_compiled_function; then
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276 pstruct bytecode.c Lisp_Compiled_Function
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277 elif test $lrecord_type = lrecord_type_console; then
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278 pstruct console.c console
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279 elif test $lrecord_type = lrecord_type_database; then
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280 pstruct database.c Lisp_Database
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281 elif test $lrecord_type = lrecord_type_device; then
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282 pstruct device.c device
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283 elif test $lrecord_type = lrecord_type_event; then
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284 pstruct events.c Lisp_Event
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285 elif test $lrecord_type = lrecord_type_extent; then
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286 pstruct extents.c extent
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287 elif test $lrecord_type = lrecord_type_extent_auxiliary; then
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288 pstruct extents.c extent_auxiliary
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289 elif test $lrecord_type = lrecord_type_extent_info; then
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290 pstruct extents.c extent_info
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291 elif test $lrecord_type = lrecord_type_face; then
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292 pstruct faces.c Lisp_Face
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293 elif test $lrecord_type = lrecord_type_float; then
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294 pstruct floatfns.c Lisp_Float
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295 elif test $lrecord_type = lrecord_type_font_instance; then
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296 pstruct objects.c Lisp_Font_Instance
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297 elif test $lrecord_type = lrecord_type_frame; then
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298 pstruct frame.c frame
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299 elif test $lrecord_type = lrecord_type_glyph; then
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300 pstruct glyph.c Lisp_Glyph
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301 elif test $lrecord_type = lrecord_type_gui_item; then
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302 pstruct gui.c Lisp_Gui_Item
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303 elif test $lrecord_type = lrecord_type_hash_table; then
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304 pstruct elhash.c Lisp_Hash_Table
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305 elif test $lrecord_type = lrecord_type_image_instance; then
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306 pstruct glyphs.c Lisp_Image_Instance
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307 elif test $lrecord_type = lrecord_type_keymap; then
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308 pstruct keymap.c Lisp_Keymap
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309 elif test $lrecord_type = lrecord_type_lcrecord_list; then
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310 pstruct alloc.c lcrecord_list
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311 elif test $lrecord_type = lrecord_type_ldap; then
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312 pstruct ldap.c Lisp_LDAP
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313 elif test $lrecord_type = lrecord_type_lstream; then
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314 pstruct lstream.c lstream
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315 elif test $lrecord_type = lrecord_type_marker; then
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316 pstruct marker.c Lisp_Marker
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317 elif test $lrecord_type = lrecord_type_opaque; then
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318 pstruct opaque.c Lisp_Opaque
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319 elif test $lrecord_type = lrecord_type_opaque_ptr; then
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320 pstruct opaque.c Lisp_Opaque_Ptr
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321 elif test $lrecord_type = lrecord_type_popup_data; then
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322 pstruct gui-x.c popup_data
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323 elif test $lrecord_type = lrecord_type_process; then
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324 pstruct process.c Lisp_Process
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325 elif test $lrecord_type = lrecord_type_range_table; then
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326 pstruct rangetab.c Lisp_Range_Table
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327 elif test $lrecord_type = lrecord_type_specifier; then
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328 pstruct specifier.c Lisp_Specifier
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329 elif test $lrecord_type = lrecord_type_subr; then
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330 pstruct eval.c Lisp_Subr
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331 elif test $lrecord_type = lrecord_type_symbol_value_buffer_local; then
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332 pstruct symbols.c symbol_value_buffer_local
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333 elif test $lrecord_type = lrecord_type_symbol_value_forward; then
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334 pstruct symbols.c symbol_value_forward
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335 elif test $lrecord_type = lrecord_type_symbol_value_lisp_magic; then
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336 pstruct symbols.c symbol_value_lisp_magic
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337 elif test $lrecord_type = lrecord_type_symbol_value_varalias; then
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338 pstruct symbols.c symbol_value_varalias
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339 elif test $lrecord_type = lrecord_type_timeout; then
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340 pstruct event-stream.c Lisp_Timeout
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341 elif test $lrecord_type = lrecord_type_toolbar_button; then
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342 pstruct toolbar.c toolbar_button
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343 elif test $lrecord_type = lrecord_type_tooltalk_message; then
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344 pstruct tooltalk.c Lisp_Tooltalk_Message
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345 elif test $lrecord_type = lrecord_type_tooltalk_pattern; then
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346 pstruct tooltalk.c Lisp_Tooltalk_Pattern
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347 elif test $lrecord_type = lrecord_type_weak_list; then
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348 pstruct data.c weak_list
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349 elif test $lrecord_type = lrecord_type_window; then
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350 pstruct window.c window
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351 elif test $lrecord_type = lrecord_type_window_configuration; then
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352 pstruct window.c window_config
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353 elif test "$type" = "null_pointer"; then
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354 echo "Lisp Object is a null pointer!!"
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355 else
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356 echo "Unknown Lisp Object type"
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357 print $1
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358 fi
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359 }
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360
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361 dbxenv suppress_startup_message 4.0
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362 ## dbxenv mt_watchpoints on
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363
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364 function dp_core {
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365 print ((struct x_frame *)(((struct frame*)(Fselected_frame(Qnil)&0x00FFFFFF))->frame_data))->widget->core
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366 }
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367
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368 ## Barf!
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369 function print_shell {
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370 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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371 }
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372
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373 ## -------------------------------------------------------------
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374 ## functions to test the debugging support itself.
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375 ## If you change this file, make sure the following still work...
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376 ## -------------------------------------------------------------
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377 function test_xtype {
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378 function doit { echo -n "$1: "; xtype "$1"; }
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379 test_various_objects
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380 }
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381
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382 function test_pobj {
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383 function doit { echo '==============================='; echo -n "$1: "; pobj "$1"; }
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384 test_various_objects
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385 }
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386
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387 function test_various_objects {
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388 doit Vemacs_major_version
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389 doit Vhelp_char
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390 doit Qnil
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391 doit Qunbound
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392 doit Vobarray
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393 doit Vall_weak_lists
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394 doit Vxemacs_codename
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395 }
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