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