1 # Copyright (C) 1992-1998, 2000-2013 Free Software Foundation, Inc.
3 # This file is part of GNU Emacs.
5 # GNU Emacs is free software; you can redistribute it and/or modify
6 # it under the terms of the GNU General Public License as published by
7 # the Free Software Foundation; either version 3, or (at your option)
10 # GNU Emacs is distributed in the hope that it will be useful,
11 # but WITHOUT ANY WARRANTY; without even the implied warranty of
12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 # GNU General Public License for more details.
15 # You should have received a copy of the GNU General Public License
16 # along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
18 # Force loading of symbols, enough to give us VALBITS etc.
20 # With some compilers, we need this to give us struct Lisp_Symbol etc.:
21 set $dummy = Fmake_symbol + 8
23 # Find lwlib source files too.
25 #dir /gd/gnu/lesstif-0.89.9/lib/Xm
27 # Don't enter GDB when user types C-g to quit.
28 # This has one unfortunate effect: you can't type C-c
29 # at the GDB to stop Emacs, when using X.
30 # However, C-z works just as well in that case.
33 # Make it work like SIGINT normally does.
36 # Pass on user signals
37 handle SIGUSR1 noprint pass
38 handle SIGUSR2 noprint pass
40 # Don't pass SIGALRM to Emacs. This makes problems when
44 # Use $bugfix so that the value isn't a constant.
45 # Using a constant runs into GDB bugs sometimes.
47 if (CHECK_LISP_OBJECT_TYPE)
52 set $ptr = ($bugfix & VALMASK) | DATA_SEG_BITS
56 if (CHECK_LISP_OBJECT_TYPE)
61 set $int = $bugfix << (USE_LSB_TAG ? 0 : INTTYPEBITS) >> INTTYPEBITS
65 if (CHECK_LISP_OBJECT_TYPE)
70 set $type = (enum Lisp_Type) (USE_LSB_TAG ? $bugfix & (1 << GCTYPEBITS) - 1 : $bugfix >> VALBITS)
73 # Set up something to print out s-expressions.
74 # We save and restore print_output_debug_flag to prevent the w32 port
75 # from calling OutputDebugString, which causes GDB to display each
76 # character twice (yuk!).
81 Print the emacs s-expression which is $.
82 Works only when an inferior emacs is executing.
85 # Print out s-expressions
88 set $output_debug = print_output_debug_flag
89 set print_output_debug_flag = 0
90 call safe_debug_print ($tmp)
91 set print_output_debug_flag = $output_debug
94 Print the argument as an emacs s-expression
95 Works only when an inferior emacs is executing.
98 # Print value of lisp variable
101 set $output_debug = print_output_debug_flag
102 set print_output_debug_flag = 0
103 call safe_debug_print (find_symbol_value (intern ($tmp)))
104 set print_output_debug_flag = $output_debug
107 Print the value of the lisp variable given as argument.
108 Works only when an inferior emacs is executing.
111 # Print out current buffer point and boundaries
113 set $b = current_buffer
115 printf "BUF PT: %d", $b->pt
116 if ($b->pt != $b->pt_byte)
117 printf "[%d]", $b->pt_byte
119 printf " of 1..%d", $t->z
120 if ($t->z != $t->z_byte)
121 printf "[%d]", $t->z_byte
123 if ($b->begv != 1 || $b->zv != $t->z)
124 printf " NARROW=%d..%d", $b->begv, $b->zv
125 if ($b->begv != $b->begv_byte || $b->zv != $b->zv_byte)
126 printf " [%d..%d]", $b->begv_byte, $b->zv_byte
129 printf " GAP: %d", $t->gpt
130 if ($t->gpt != $t->gpt_byte)
131 printf "[%d]", $t->gpt_byte
133 printf " SZ=%d\n", $t->gap_size
136 Print current buffer's point and boundaries.
137 Prints values of point, beg, end, narrow, and gap for current buffer.
141 set $itmethod = $arg0
144 printf "GET_FROM_BUFFER"
147 printf "GET_FROM_DISPLAY_VECTOR"
150 printf "GET_FROM_STRING"
153 printf "GET_FROM_C_STRING"
156 printf "GET_FROM_IMAGE"
159 printf "GET_FROM_STRETCH"
161 if ($itmethod < 0 || $itmethod > 5)
166 Pretty print it->method given as first arg
169 # Print out iterator given as first arg
172 printf "cur=%d", $it->current.pos.charpos
173 if ($it->current.pos.charpos != $it->current.pos.bytepos)
174 printf "[%d]", $it->current.pos.bytepos
176 printf " pos=%d", $it->position.charpos
177 if ($it->position.charpos != $it->position.bytepos)
178 printf "[%d]", $it->position.bytepos
180 printf " start=%d", $it->start.pos.charpos
181 if ($it->start.pos.charpos != $it->start.pos.bytepos)
182 printf "[%d]", $it->start.pos.bytepos
184 printf " end=%d", $it->end_charpos
185 printf " stop=%d", $it->stop_charpos
186 printf " face=%d", $it->face_id
187 if ($it->multibyte_p)
190 if ($it->header_line_p)
193 if ($it->n_overlay_strings > 0)
194 printf " nov=%d", $it->n_overlay_strings
197 printf " sp=%d", $it->sp
201 if ($it->len == 1 && $it->c >= ' ' && it->c < 255)
202 printf " ch='%c'", $it->c
204 printf " ch=[%d,%d]", $it->c, $it->len
210 printf "IT_CHARACTER"
213 printf "IT_COMPOSITION"
225 printf "IT_TRUNCATION"
228 printf "IT_CONTINUATION"
230 if ($it->what < 0 || $it->what > 6)
234 if ($it->method != 0)
237 pitmethod $it->method
238 if ($it->method == 2)
240 printf "[%d]", $it->current.string_pos.charpos
242 if ($it->method == 4)
244 printf "[%d]", $it->image_id
249 printf "BIDI: base_stop=%d prev_stop=%d level=%d\n", $it->base_level_stop, $it->prev_stop, $it->bidi_it.resolved_level
251 if ($it->region_beg_charpos >= 0)
252 printf "reg=%d-%d ", $it->region_beg_charpos, $it->region_end_charpos
254 printf "vpos=%d hpos=%d", $it->vpos, $it->hpos,
255 printf " y=%d lvy=%d", $it->current_y, $it->last_visible_y
256 printf " x=%d vx=%d-%d", $it->current_x, $it->first_visible_x, $it->last_visible_x
257 printf " w=%d", $it->pixel_width
258 printf " a+d=%d+%d=%d", $it->ascent, $it->descent, $it->ascent+$it->descent
259 printf " max=%d+%d=%d", $it->max_ascent, $it->max_descent, $it->max_ascent+$it->max_descent
262 while ($i < $it->sp && $i < 4)
263 set $e = $it->stack[$i]
264 printf "stack[%d]: ", $i
266 printf "[%d]", $e.position.charpos
272 Pretty print a display iterator.
273 Take one arg, an iterator object or pointer.
280 Pretty print the display iterator it.
285 printf "y=%d x=%d pwid=%d", $row->y, $row->x, $row->pixel_width
286 printf " a+d=%d+%d=%d", $row->ascent, $row->height-$row->ascent, $row->height
287 printf " phys=%d+%d=%d", $row->phys_ascent, $row->phys_height-$row->phys_ascent, $row->phys_height
288 printf " vis=%d\n", $row->visible_height
289 printf "used=(LMargin=%d,Text=%d,RMargin=%d) Hash=%d\n", $row->used[0], $row->used[1], $row->used[2], $row->hash
290 printf "start=%d end=%d", $row->start.pos.charpos, $row->end.pos.charpos
294 if ($row->displays_text_p)
297 if ($row->mode_line_p)
300 if ($row->continued_p)
303 if ($row-> truncated_on_left_p)
306 if ($row-> truncated_on_right_p)
309 if ($row->starts_in_middle_of_char_p)
312 if ($row->ends_in_middle_of_char_p)
315 if ($row->ends_in_newline_from_string_p)
318 if ($row->ends_at_zv_p)
321 if ($row->overlapped_p)
324 if ($row->overlapping_p)
330 Pretty print information about glyph_row.
331 Takes one argument, a row object or pointer.
338 Pretty print information about glyph_row in row.
344 printf "y=%d x=%d vpos=%d hpos=%d", $cp->y, $cp->x, $cp->vpos, $cp->hpos
347 Pretty print a window cursor.
352 pcursorx output_cursor
356 Pretty print the output_cursor.
361 xgetint $w->sequence_number
362 if ($w->mini_p != Qnil)
365 printf "Window %d ", $int
367 set $tem = (struct buffer *) $ptr
369 printf "%s", ((struct Lisp_String *) $ptr)->data
372 set $tem = (struct Lisp_Marker *) $ptr
373 printf "start=%d end:", $tem->charpos
374 if ($w->window_end_valid != Qnil)
375 xgetint $w->window_end_pos
376 printf "pos=%d", $int
377 xgetint $w->window_end_vpos
378 printf " vpos=%d", $int
382 printf " vscroll=%d", $w->vscroll
383 if ($w->force_start != Qnil)
384 printf " FORCE_START"
386 if ($w->must_be_updated_p)
393 pcursorx $w->phys_cursor
394 if ($w->phys_cursor_on_p)
400 if ($w->last_cursor_off_p != $w->cursor_off_p)
401 if ($w->last_cursor_off_p)
407 if ($w->cursor_off_p)
415 Pretty print a window structure.
416 Takes one argument, a pointer to a window structure.
423 Pretty print window structure w.
448 if ($arg0 < 0 || $arg0 > 6)
453 Print textual description of bidi type given as first argument.
460 if ($g.u.ch >= ' ' && $g.u.ch < 127)
461 printf "CHAR[%c]", $g.u.ch
463 printf "CHAR[0x%x]", $g.u.ch
468 printf "COMP[%d (%d..%d)]", $g.u.cmp.id, $g.slice.cmp.from, $g.slice.cmp.to
473 if ($g.u.glyphless.method == 0)
476 if ($g.u.glyphless.method == 1)
479 if ($g.u.glyphless.method == 2)
482 if ($g.u.glyphless.method == 3)
488 printf "IMAGE[%d]", $g.u.img_id
492 printf "STRETCH[%d+%d]", $g.u.stretch.height, $g.u.stretch.ascent
495 if ($type == Lisp_String)
497 printf " str=0x%x[%d]", ((struct Lisp_String *)$ptr)->data, $g.charpos
499 printf " pos=%d", $g.charpos
501 # For characters, print their resolved level and bidi type
503 printf " blev=%d,btyp=", $g.resolved_level
504 pbiditype $g.bidi_type
506 printf " w=%d a+d=%d+%d", $g.pixel_width, $g.ascent, $g.descent
507 # If not DEFAULT_FACE_ID
509 printf " face=%d", $g.face_id
512 printf " vof=%d", $g.voffset
520 if ($g.glyph_not_available_p)
523 if ($g.overlaps_vertically_p)
526 if ($g.avoid_cursor_p)
529 if ($g.left_box_line_p)
532 if ($g.right_box_line_p)
535 if ($g.slice.img.x || $g.slice.img.y || $g.slice.img.width || $g.slice.img.height)
536 printf " slice=%d,%d,%d,%d" ,$g.slice.img.x, $g.slice.img.y, $g.slice.img.width, $g.slice.img.height
541 Pretty print a glyph structure.
542 Takes one argument, a pointer to a glyph structure.
550 Pretty print glyph structure glyph.
558 Pretty print glyph structure glyph[I].
559 Takes one argument, a integer I.
563 set $pgidx = $pgidx + 1
567 Pretty print next glyph structure.
575 set $used = $row->used[$area]
577 set $gl0 = $row->glyphs[$area]
579 printf "%s: %d glyphs\n", ($area == 0 ? "LEFT" : $area == 2 ? "RIGHT" : "TEXT"), $used
580 while ($pgidx < $used)
581 printf "%3d %4d: ", $pgidx, $xofs
583 set $xofs = $xofs + $gl0[$pgidx]->pixel_width
584 set $pgidx = $pgidx + 1
587 set $area = $area + 1
591 Pretty print all glyphs in a row structure.
592 Takes one argument, a pointer to a row structure.
599 Pretty print all glyphs in row structure row.
606 Pretty print all glyphs in it->glyph_row.
610 printf "edges=(%d,%d),r2l=%d,cont=%d,trunc=(%d,%d),at_zv=%d\n", $arg0->minpos.charpos, $arg0->maxpos.charpos, $arg0->reversed_p, $arg0->continued_p, $arg0->truncated_on_left_p, $arg0->truncated_on_right_p, $arg0->ends_at_zv_p
613 Print important attributes of a glyph_row structure.
614 Takes one argument, a pointer to a glyph_row structure.
620 set $glend = $mtx->rows + $mtx->nrows - 1
630 Print data about glyph rows in a glyph matrix.
631 Takes one argument, a pointer to a glyph_matrix structure.
638 if $type == Lisp_Misc
641 if $type == Lisp_Vectorlike
647 Print the type of $, assuming it is an Emacs Lisp value.
648 If the first type printed is Lisp_Vector or Lisp_Misc,
649 a second line gives the more precise type.
654 set $size = ((struct Lisp_Vector *) $ptr)->header.size
655 if ($size & PSEUDOVECTOR_FLAG)
656 output (enum pvec_type) (($size & PVEC_TYPE_MASK) >> PSEUDOVECTOR_SIZE_BITS)
658 output $size & ~ARRAY_MARK_FLAG
663 Print the size or vector subtype of $.
664 This command assumes that $ is a vector or pseudovector.
669 output (enum Lisp_Misc_Type) (((struct Lisp_Free *) $ptr)->type)
673 Assume that $ is some misc type and print its specific type.
681 Print $ as an Emacs Lisp integer. This gets the sign right.
689 Print the pointer portion of an Emacs Lisp value in $.
694 print (struct Lisp_Marker *) $ptr
697 Print $ as a marker pointer.
698 This command assumes that $ is an Emacs Lisp marker value.
703 print (struct Lisp_Overlay *) $ptr
706 Print $ as a overlay pointer.
707 This command assumes that $ is an Emacs Lisp overlay value.
712 print (struct Lisp_Free *) $ptr
715 Print $ as a misc free-cell pointer.
716 This command assumes that $ is an Emacs Lisp Misc value.
722 print (struct Lisp_Symbol *) $ptr
727 Print the name and address of the symbol $.
728 This command assumes that $ is an Emacs Lisp symbol value.
733 print (struct Lisp_String *) $ptr
738 Print the contents and address of the string $.
739 This command assumes that $ is an Emacs Lisp string value.
744 print (struct Lisp_Vector *) $ptr
745 output ($->header.size > 50) ? 0 : ($->contents[0])@($->header.size & ~ARRAY_MARK_FLAG)
749 Print the contents and address of the vector $.
750 This command assumes that $ is an Emacs Lisp vector value.
755 print (struct Lisp_Process *) $ptr
760 Print the address of the struct Lisp_process to which $ points.
761 This command assumes that $ is a Lisp_Object.
766 print (struct frame *) $ptr
768 set $ptr = (struct Lisp_String *) $ptr
773 Print $ as a frame pointer.
774 This command assumes $ is an Emacs Lisp frame value.
779 print (struct Lisp_Vector *) $ptr
780 output ($->contents[0])@($->header.size & 0xff)
783 Print $ as a compiled function pointer.
784 This command assumes that $ is an Emacs Lisp compiled value.
789 print (struct window *) $ptr
790 set $window = (struct window *) $ptr
791 xgetint $window->total_cols
793 xgetint $window->total_lines
795 xgetint $window->left_col
797 xgetint $window->top_line
799 printf "%dx%d+%d+%d\n", $width, $height, $left, $top
802 Print $ as a window pointer, assuming it is an Emacs Lisp window value.
803 Print the window's position as "WIDTHxHEIGHT+LEFT+TOP".
808 print (struct save_window_data *) $ptr
811 Print $ as a window configuration pointer.
812 This command assumes that $ is an Emacs Lisp window configuration value.
817 print (struct Lisp_Subr *) $ptr
822 Print the address of the subr which the Lisp_Object $ points to.
827 print (struct Lisp_Char_Table *) $ptr
830 printf " %d extra slots", ($->header.size & 0x1ff) - 68
834 Print the address of the char-table $, and its purpose.
835 This command assumes that $ is an Emacs Lisp char-table value.
840 print (struct Lisp_Sub_Char_Table *) $ptr
844 printf "Depth: %d, Min char: %d (0x%x)\n", $depth, $int, $int
846 document xsubchartable
847 Print the address of the sub-char-table $, its depth and min-char.
848 This command assumes that $ is an Emacs Lisp sub-char-table value.
853 print (struct Lisp_Bool_Vector *) $ptr
854 output ($->size > 256) ? 0 : ($->data[0])@(($->size + BOOL_VECTOR_BITS_PER_CHAR - 1)/ BOOL_VECTOR_BITS_PER_CHAR)
858 Print the contents and address of the bool-vector $.
859 This command assumes that $ is an Emacs Lisp bool-vector value.
864 print (struct buffer *) $ptr
866 output ((struct Lisp_String *) $ptr)->data
870 Set $ as a buffer pointer and the name of the buffer.
871 This command assumes $ is an Emacs Lisp buffer value.
876 print (struct Lisp_Hash_Table *) $ptr
879 Set $ as a hash table pointer.
880 This command assumes that $ is an Emacs Lisp hash table value.
885 print (struct Lisp_Cons *) $ptr
890 Print the contents of $ as an Emacs Lisp cons.
898 Print the contents of the next cell in a list.
899 This command assumes that the last thing you printed was a cons cell contents
900 (type struct Lisp_Cons) or a pointer to one.
905 print/x ($type == Lisp_Cons ? ((struct Lisp_Cons *) $ptr)->car : 0)
908 Assume that $ is an Emacs Lisp pair and print its car.
914 print/x ($type == Lisp_Cons ? ((struct Lisp_Cons *) $ptr)->u.cdr : 0)
917 Assume that $ is an Emacs Lisp pair and print its cdr.
922 set $cons = (struct Lisp_Cons *) $ptr
926 while $cons != $nil && $i < 10
930 set $cons = (struct Lisp_Cons *) $ptr
942 Print $ assuming it is a list.
947 print ((struct Lisp_Float *) $ptr)->u.data
950 Print $ assuming it is a lisp floating-point number.
955 print (struct scrollbar *) $ptr
960 Print $ as a scrollbar pointer.
965 if $type == Lisp_Int0 || $type == Lisp_Int1
968 if $type == Lisp_Symbol
971 if $type == Lisp_String
974 if $type == Lisp_Cons
977 if $type == Lisp_Float
980 if $type == Lisp_Misc
981 set $misc = (enum Lisp_Misc_Type) (((struct Lisp_Free *) $ptr)->type)
982 if $misc == Lisp_Misc_Free
985 if $misc == Lisp_Misc_Marker
988 if $misc == Lisp_Misc_Overlay
991 # if $misc == Lisp_Misc_Save_Value
995 if $type == Lisp_Vectorlike
996 set $size = ((struct Lisp_Vector *) $ptr)->header.size
997 if ($size & PSEUDOVECTOR_FLAG)
998 set $vec = (enum pvec_type) (($size & PVEC_TYPE_MASK) >> PSEUDOVECTOR_SIZE_BITS)
999 if $vec == PVEC_NORMAL_VECTOR
1002 if $vec == PVEC_PROCESS
1005 if $vec == PVEC_FRAME
1008 if $vec == PVEC_COMPILED
1011 if $vec == PVEC_WINDOW
1014 if $vec == PVEC_WINDOW_CONFIGURATION
1017 if $vec == PVEC_SUBR
1020 if $vec == PVEC_CHAR_TABLE
1023 if $vec == PVEC_BOOL_VECTOR
1026 if $vec == PVEC_BUFFER
1029 if $vec == PVEC_HASH_TABLE
1038 Print $ as a lisp object of any type.
1042 set $data = (char *) $arg0->data
1043 output ($arg0->size > 1000) ? 0 : ($data[0])@($arg0->size_byte < 0 ? $arg0->size & ~ARRAY_MARK_FLAG : $arg0->size_byte)
1048 set $sym = (struct Lisp_Symbol *) $ptr
1050 set $sym_name = (struct Lisp_String *) $ptr
1054 Print argument as a symbol.
1058 set $tmp = (struct Lisp_Hash_Table *) ((Vcoding_system_hash_table & VALMASK) | DATA_SEG_BITS)
1059 set $tmp = (struct Lisp_Vector *) (($tmp->key_and_value & VALMASK) | DATA_SEG_BITS)
1060 set $name = $tmp->contents[$arg0 * 2]
1063 print $tmp->contents[$arg0 * 2 + 1]
1067 Print the name and attributes of coding system that has ID (argument).
1071 set $tmp = (struct Lisp_Hash_Table *) ((Vcharset_hash_table & VALMASK) | DATA_SEG_BITS)
1072 set $tmp = (struct Lisp_Vector *) (($tmp->key_and_value & VALMASK) | DATA_SEG_BITS)
1073 p $tmp->contents[charset_table[$arg0].hash_index * 2]
1077 Print the name of charset that has ID (argument).
1082 set $tbl = (struct Lisp_Char_Table *) $ptr
1084 xgetint $tbl->extras[0]
1085 printf " ID:%d", $int
1086 xgettype $tbl->extras[1]
1087 xgetptr $tbl->extras[1]
1088 if $type == Lisp_String
1089 set $ptr = (struct Lisp_String *) $ptr
1093 xgetptr $tbl->extras[2]
1094 set $ptr = (struct Lisp_Char_Table *) $ptr
1095 xgetptr $ptr->extras[1]
1096 set $ptr = (struct Lisp_String *) $ptr
1097 printf " Realized from:"
1105 set $size = (((struct Lisp_Vector *) $ptr)->header.size & 0x1FF)
1106 if $size == FONT_SPEC_MAX
1107 print (struct font_spec *) $ptr
1109 if $size == FONT_ENTITY_MAX
1110 print (struct font_entity *) $ptr
1112 print (struct font *) $ptr
1117 Print $ assuming it is a list font (font-spec, font-entity, or font-object).
1121 set $bt = backtrace_list
1123 xgettype ($bt->function)
1124 if $type == Lisp_Symbol
1125 xprintsym ($bt->function)
1126 printf " (0x%x)\n", $bt->args
1128 xgetptr $bt->function
1129 printf "0x%x ", $ptr
1130 if $type == Lisp_Vectorlike
1131 xgetptr ($bt->function)
1132 set $size = ((struct Lisp_Vector *) $ptr)->header.size
1133 if ($size & PSEUDOVECTOR_FLAG)
1134 output (enum pvec_type) (($size & PVEC_TYPE_MASK) >> PSEUDOVECTOR_SIZE_BITS)
1136 output $size & ~ARRAY_MARK_FLAG
1139 printf "Lisp type %d", $type
1147 Print a backtrace of Lisp function calls from backtrace_list.
1148 Set a breakpoint at Fsignal and call this to see from where
1149 an error was signaled.
1152 define xprintbytestr
1153 set $data = (char *) $arg0->data
1155 output/u ($arg0->size > 1000) ? 0 : ($data[0])@($arg0->size_byte < 0 ? $arg0->size & ~ARRAY_MARK_FLAG : $arg0->size_byte)
1157 document xprintbytestr
1158 Print a string of byte code.
1161 define xwhichsymbols
1162 set $output_debug = print_output_debug_flag
1163 set print_output_debug_flag = 0
1164 call safe_debug_print (which_symbols ($arg0, $arg1))
1165 set print_output_debug_flag = $output_debug
1167 document xwhichsymbols
1168 Print symbols which references a given lisp object
1169 either as its symbol value or symbol function.
1170 Call with two arguments: the lisp object and the
1171 maximum number of symbols referencing it to produce.
1175 set $bt = byte_stack_list
1177 xgetptr $bt->byte_string
1178 set $ptr = (struct Lisp_String *) $ptr
1180 printf "\n0x%x => ", $bt->byte_string
1181 xwhichsymbols $bt->byte_string 5
1186 Print a backtrace of the byte code stack.
1189 # Show Lisp backtrace after normal backtrace.
1190 define hookpost-backtrace
1191 set $bt = backtrace_list
1194 echo Lisp Backtrace:\n
1199 # Flush display (X only)
1204 Flush pending X window display updates to screen.
1205 Works only when an inferior emacs is executing.
1210 set print sevenbit-strings
1212 show environment DISPLAY
1213 show environment TERM
1215 # When debugging, it is handy to be able to "return" from
1216 # terminate_due_to_signal when an assertion failure is non-fatal.
1217 break terminate_due_to_signal
1219 # x_error_quitter is defined only on X. But window-system is set up
1220 # only at run time, during Emacs startup, so we need to defer setting
1221 # the breakpoint. init_sys_modes is the first function called on
1222 # every platform after init_display, where window-system is set.
1223 tbreak init_sys_modes
1226 xgetptr globals.f_Vinitial_window_system
1227 set $tem = (struct Lisp_Symbol *) $ptr
1229 set $tem = (struct Lisp_String *) $ptr
1230 set $tem = (char *) $tem->data
1231 # If we are running in synchronous mode, we want a chance to look
1232 # around before Emacs exits. Perhaps we should put the break
1233 # somewhere else instead...
1234 if $tem[0] == 'x' && $tem[1] == '\0'
1235 break x_error_quitter