1 /* TUI layout window management.
2 
3    Copyright 1998, 1999, 2000, 2001, 2002, 2003, 2004 Free Software
4    Foundation, Inc.
5 
6    Contributed by Hewlett-Packard Company.
7 
8    This file is part of GDB.
9 
10    This program is free software; you can redistribute it and/or modify
11    it under the terms of the GNU General Public License as published by
12    the Free Software Foundation; either version 2 of the License, or
13    (at your option) any later version.
14 
15    This program is distributed in the hope that it will be useful,
16    but WITHOUT ANY WARRANTY; without even the implied warranty of
17    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
18    GNU General Public License for more details.
19 
20    You should have received a copy of the GNU General Public License
21    along with this program; if not, write to the Free Software
22    Foundation, Inc., 59 Temple Place - Suite 330,
23    Boston, MA 02111-1307, USA.  */
24 
25 #include "defs.h"
26 #include "command.h"
27 #include "symtab.h"
28 #include "frame.h"
29 #include "source.h"
30 #include <ctype.h>
31 
32 #include "tui/tui.h"
33 #include "tui/tui-data.h"
34 #include "tui/tui-windata.h"
35 #include "tui/tui-wingeneral.h"
36 #include "tui/tui-stack.h"
37 #include "tui/tui-regs.h"
38 #include "tui/tui-win.h"
39 #include "tui/tui-winsource.h"
40 #include "tui/tui-disasm.h"
41 
42 #include "gdb_string.h"
43 #include "gdb_curses.h"
44 
45 /*******************************
46 ** Static Local Decls
47 ********************************/
48 static void show_layout (enum tui_layout_type);
49 static void init_gen_win_info (struct tui_gen_win_info *, enum tui_win_type, int, int, int, int);
50 static void init_and_make_win (void **, enum tui_win_type, int, int, int, int, int);
51 static void show_source_or_disasm_and_command (enum tui_layout_type);
52 static void make_source_or_disasm_window (struct tui_win_info * *, enum tui_win_type, int, int);
53 static void make_command_window (struct tui_win_info * *, int, int);
54 static void make_source_window (struct tui_win_info * *, int, int);
55 static void make_disasm_window (struct tui_win_info * *, int, int);
56 static void make_data_window (struct tui_win_info * *, int, int);
57 static void show_source_command (void);
58 static void show_disasm_command (void);
59 static void show_source_disasm_command (void);
60 static void show_data (enum tui_layout_type);
61 static enum tui_layout_type next_layout (void);
62 static enum tui_layout_type prev_layout (void);
63 static void tui_layout_command (char *, int);
64 static void tui_toggle_layout_command (char *, int);
65 static void tui_toggle_split_layout_command (char *, int);
66 static CORE_ADDR extract_display_start_addr (void);
67 static void tui_handle_xdb_layout (struct tui_layout_def *);
68 
69 
70 /***************************************
71 ** DEFINITIONS
72 ***************************************/
73 
74 #define LAYOUT_USAGE     "Usage: layout prev | next | <layout_name> \n"
75 
76 /* Show the screen layout defined.  */
77 static void
show_layout(enum tui_layout_type layout)78 show_layout (enum tui_layout_type layout)
79 {
80   enum tui_layout_type cur_layout = tui_current_layout ();
81 
82   if (layout != cur_layout)
83     {
84       /*
85          ** Since the new layout may cause changes in window size, we
86          ** should free the content and reallocate on next display of
87          ** source/asm
88        */
89       tui_free_all_source_wins_content ();
90       tui_clear_source_windows ();
91       if (layout == SRC_DATA_COMMAND || layout == DISASSEM_DATA_COMMAND)
92 	{
93 	  show_data (layout);
94 	  tui_refresh_all (tui_win_list);
95 	}
96       else
97 	{
98 	  /* First make the current layout be invisible */
99 	  tui_make_all_invisible ();
100 	  tui_make_invisible (tui_locator_win_info_ptr ());
101 
102 	  switch (layout)
103 	    {
104 	      /* Now show the new layout */
105 	    case SRC_COMMAND:
106 	      show_source_command ();
107 	      tui_add_to_source_windows (TUI_SRC_WIN);
108 	      break;
109 	    case DISASSEM_COMMAND:
110 	      show_disasm_command ();
111 	      tui_add_to_source_windows (TUI_DISASM_WIN);
112 	      break;
113 	    case SRC_DISASSEM_COMMAND:
114 	      show_source_disasm_command ();
115 	      tui_add_to_source_windows (TUI_SRC_WIN);
116 	      tui_add_to_source_windows (TUI_DISASM_WIN);
117 	      break;
118 	    default:
119 	      break;
120 	    }
121 	}
122     }
123 }
124 
125 
126 /* Function to set the layout to SRC_COMMAND, DISASSEM_COMMAND,
127    SRC_DISASSEM_COMMAND, SRC_DATA_COMMAND, or DISASSEM_DATA_COMMAND.
128    If the layout is SRC_DATA_COMMAND, DISASSEM_DATA_COMMAND, or
129    UNDEFINED_LAYOUT, then the data window is populated according to
130    regs_display_type.  */
131 enum tui_status
tui_set_layout(enum tui_layout_type layout_type,enum tui_register_display_type regs_display_type)132 tui_set_layout (enum tui_layout_type layout_type,
133 		enum tui_register_display_type regs_display_type)
134 {
135   enum tui_status status = TUI_SUCCESS;
136 
137   if (layout_type != UNDEFINED_LAYOUT || regs_display_type != TUI_UNDEFINED_REGS)
138     {
139       enum tui_layout_type cur_layout = tui_current_layout (), new_layout = UNDEFINED_LAYOUT;
140       int regs_populate = FALSE;
141       CORE_ADDR addr = extract_display_start_addr ();
142       struct tui_win_info * new_win_with_focus = (struct tui_win_info *) NULL;
143       struct tui_win_info * win_with_focus = tui_win_with_focus ();
144       struct tui_layout_def * layout_def = tui_layout_def ();
145 
146 
147       if (layout_type == UNDEFINED_LAYOUT &&
148 	  regs_display_type != TUI_UNDEFINED_REGS)
149 	{
150 	  if (cur_layout == SRC_DISASSEM_COMMAND)
151 	    new_layout = DISASSEM_DATA_COMMAND;
152 	  else if (cur_layout == SRC_COMMAND || cur_layout == SRC_DATA_COMMAND)
153 	    new_layout = SRC_DATA_COMMAND;
154 	  else if (cur_layout == DISASSEM_COMMAND ||
155 		   cur_layout == DISASSEM_DATA_COMMAND)
156 	    new_layout = DISASSEM_DATA_COMMAND;
157 	}
158       else
159 	new_layout = layout_type;
160 
161       regs_populate = (new_layout == SRC_DATA_COMMAND ||
162 		      new_layout == DISASSEM_DATA_COMMAND ||
163 		      regs_display_type != TUI_UNDEFINED_REGS);
164       if (new_layout != cur_layout || regs_display_type != TUI_UNDEFINED_REGS)
165 	{
166 	  if (new_layout != cur_layout)
167 	    {
168 	      show_layout (new_layout);
169 	      /*
170 	         ** Now determine where focus should be
171 	       */
172 	      if (win_with_focus != TUI_CMD_WIN)
173 		{
174 		  switch (new_layout)
175 		    {
176 		    case SRC_COMMAND:
177 		      tui_set_win_focus_to (TUI_SRC_WIN);
178 		      layout_def->display_mode = SRC_WIN;
179 		      layout_def->split = FALSE;
180 		      break;
181 		    case DISASSEM_COMMAND:
182 		      /* the previous layout was not showing
183 		         ** code. this can happen if there is no
184 		         ** source available:
185 		         ** 1. if the source file is in another dir OR
186 		         ** 2. if target was compiled without -g
187 		         ** We still want to show the assembly though!
188 		       */
189 		      addr = tui_get_begin_asm_address ();
190 		      tui_set_win_focus_to (TUI_DISASM_WIN);
191 		      layout_def->display_mode = DISASSEM_WIN;
192 		      layout_def->split = FALSE;
193 		      break;
194 		    case SRC_DISASSEM_COMMAND:
195 		      /* the previous layout was not showing
196 		         ** code. this can happen if there is no
197 		         ** source available:
198 		         ** 1. if the source file is in another dir OR
199 		         ** 2. if target was compiled without -g
200 		         ** We still want to show the assembly though!
201 		       */
202 		      addr = tui_get_begin_asm_address ();
203 		      if (win_with_focus == TUI_SRC_WIN)
204 			tui_set_win_focus_to (TUI_SRC_WIN);
205 		      else
206 			tui_set_win_focus_to (TUI_DISASM_WIN);
207 		      layout_def->split = TRUE;
208 		      break;
209 		    case SRC_DATA_COMMAND:
210 		      if (win_with_focus != TUI_DATA_WIN)
211 			tui_set_win_focus_to (TUI_SRC_WIN);
212 		      else
213 			tui_set_win_focus_to (TUI_DATA_WIN);
214 		      layout_def->display_mode = SRC_WIN;
215 		      layout_def->split = FALSE;
216 		      break;
217 		    case DISASSEM_DATA_COMMAND:
218 		      /* the previous layout was not showing
219 		         ** code. this can happen if there is no
220 		         ** source available:
221 		         ** 1. if the source file is in another dir OR
222 		         ** 2. if target was compiled without -g
223 		         ** We still want to show the assembly though!
224 		       */
225 		      addr = tui_get_begin_asm_address ();
226 		      if (win_with_focus != TUI_DATA_WIN)
227 			tui_set_win_focus_to (TUI_DISASM_WIN);
228 		      else
229 			tui_set_win_focus_to (TUI_DATA_WIN);
230 		      layout_def->display_mode = DISASSEM_WIN;
231 		      layout_def->split = FALSE;
232 		      break;
233 		    default:
234 		      break;
235 		    }
236 		}
237 	      if (new_win_with_focus != (struct tui_win_info *) NULL)
238 		tui_set_win_focus_to (new_win_with_focus);
239 	      /*
240 	         ** Now update the window content
241 	       */
242 	      if (!regs_populate &&
243 		  (new_layout == SRC_DATA_COMMAND ||
244 		   new_layout == DISASSEM_DATA_COMMAND))
245 		tui_display_all_data ();
246 
247 	      tui_update_source_windows_with_addr (addr);
248 	    }
249 	  if (regs_populate)
250 	    {
251               tui_show_registers (TUI_DATA_WIN->detail.data_display_info.current_group);
252 	    }
253 	}
254     }
255   else
256     status = TUI_FAILURE;
257 
258   return status;
259 }
260 
261 /* Add the specified window to the layout in a logical way.  This
262    means setting up the most logical layout given the window to be
263    added.  */
264 void
tui_add_win_to_layout(enum tui_win_type type)265 tui_add_win_to_layout (enum tui_win_type type)
266 {
267   enum tui_layout_type cur_layout = tui_current_layout ();
268 
269   switch (type)
270     {
271     case SRC_WIN:
272       if (cur_layout != SRC_COMMAND &&
273 	  cur_layout != SRC_DISASSEM_COMMAND &&
274 	  cur_layout != SRC_DATA_COMMAND)
275 	{
276 	  tui_clear_source_windows_detail ();
277 	  if (cur_layout == DISASSEM_DATA_COMMAND)
278 	    show_layout (SRC_DATA_COMMAND);
279 	  else
280 	    show_layout (SRC_COMMAND);
281 	}
282       break;
283     case DISASSEM_WIN:
284       if (cur_layout != DISASSEM_COMMAND &&
285 	  cur_layout != SRC_DISASSEM_COMMAND &&
286 	  cur_layout != DISASSEM_DATA_COMMAND)
287 	{
288 	  tui_clear_source_windows_detail ();
289 	  if (cur_layout == SRC_DATA_COMMAND)
290 	    show_layout (DISASSEM_DATA_COMMAND);
291 	  else
292 	    show_layout (DISASSEM_COMMAND);
293 	}
294       break;
295     case DATA_WIN:
296       if (cur_layout != SRC_DATA_COMMAND &&
297 	  cur_layout != DISASSEM_DATA_COMMAND)
298 	{
299 	  if (cur_layout == DISASSEM_COMMAND)
300 	    show_layout (DISASSEM_DATA_COMMAND);
301 	  else
302 	    show_layout (SRC_DATA_COMMAND);
303 	}
304       break;
305     default:
306       break;
307     }
308 }
309 
310 
311 /* Answer the height of a window.  If it hasn't been created yet,
312    answer what the height of a window would be based upon its type and
313    the layout.  */
314 int
tui_default_win_height(enum tui_win_type type,enum tui_layout_type layout)315 tui_default_win_height (enum tui_win_type type, enum tui_layout_type layout)
316 {
317   int h;
318 
319   if (tui_win_list[type] != (struct tui_win_info *) NULL)
320     h = tui_win_list[type]->generic.height;
321   else
322     {
323       switch (layout)
324 	{
325 	case SRC_COMMAND:
326 	case DISASSEM_COMMAND:
327 	  if (TUI_CMD_WIN == NULL)
328 	    h = tui_term_height () / 2;
329 	  else
330 	    h = tui_term_height () - TUI_CMD_WIN->generic.height;
331 	  break;
332 	case SRC_DISASSEM_COMMAND:
333 	case SRC_DATA_COMMAND:
334 	case DISASSEM_DATA_COMMAND:
335 	  if (TUI_CMD_WIN == NULL)
336 	    h = tui_term_height () / 3;
337 	  else
338 	    h = (tui_term_height () - TUI_CMD_WIN->generic.height) / 2;
339 	  break;
340 	default:
341 	  h = 0;
342 	  break;
343 	}
344     }
345 
346   return h;
347 }
348 
349 
350 /* Answer the height of a window.  If it hasn't been created yet,
351    answer what the height of a window would be based upon its type and
352    the layout.  */
353 int
tui_default_win_viewport_height(enum tui_win_type type,enum tui_layout_type layout)354 tui_default_win_viewport_height (enum tui_win_type type,
355 				 enum tui_layout_type layout)
356 {
357   int h;
358 
359   h = tui_default_win_height (type, layout);
360 
361   if (tui_win_list[type] == TUI_CMD_WIN)
362     h -= 1;
363   else
364     h -= 2;
365 
366   return h;
367 }
368 
369 
370 /* Function to initialize gdb commands, for tui window layout
371    manipulation.  */
372 void
_initialize_tui_layout(void)373 _initialize_tui_layout (void)
374 {
375   add_com ("layout", class_tui, tui_layout_command,
376            "Change the layout of windows.\n\
377 Usage: layout prev | next | <layout_name> \n\
378 Layout names are:\n\
379    src   : Displays source and command windows.\n\
380    asm   : Displays disassembly and command windows.\n\
381    split : Displays source, disassembly and command windows.\n\
382    regs  : Displays register window. If existing layout\n\
383            is source/command or assembly/command, the \n\
384            register window is displayed. If the\n\
385            source/assembly/command (split) is displayed, \n\
386            the register window is displayed with \n\
387            the window that has current logical focus.\n");
388   if (xdb_commands)
389     {
390       add_com ("td", class_tui, tui_toggle_layout_command,
391                "Toggle between Source/Command and Disassembly/Command layouts.\n");
392       add_com ("ts", class_tui, tui_toggle_split_layout_command,
393                "Toggle between Source/Command or Disassembly/Command and \n\
394 Source/Disassembly/Command layouts.\n");
395     }
396 }
397 
398 
399 /*************************
400 ** STATIC LOCAL FUNCTIONS
401 **************************/
402 
403 
404 /* Function to set the layout to SRC, ASM, SPLIT, NEXT, PREV, DATA,
405    REGS, $REGS, $GREGS, $FREGS, $SREGS.  */
406 enum tui_status
tui_set_layout_for_display_command(const char * layout_name)407 tui_set_layout_for_display_command (const char *layout_name)
408 {
409   enum tui_status status = TUI_SUCCESS;
410 
411   if (layout_name != (char *) NULL)
412     {
413       int i;
414       char *buf_ptr;
415       enum tui_layout_type new_layout = UNDEFINED_LAYOUT;
416       enum tui_register_display_type dpy_type = TUI_UNDEFINED_REGS;
417       enum tui_layout_type cur_layout = tui_current_layout ();
418 
419       buf_ptr = (char *) xstrdup (layout_name);
420       for (i = 0; (i < strlen (layout_name)); i++)
421 	buf_ptr[i] = toupper (buf_ptr[i]);
422 
423       /* First check for ambiguous input */
424       if (strlen (buf_ptr) <= 1 && (*buf_ptr == 'S' || *buf_ptr == '$'))
425 	{
426 	  warning ("Ambiguous command input.\n");
427 	  status = TUI_FAILURE;
428 	}
429       else
430 	{
431 	  if (subset_compare (buf_ptr, "SRC"))
432 	    new_layout = SRC_COMMAND;
433 	  else if (subset_compare (buf_ptr, "ASM"))
434 	    new_layout = DISASSEM_COMMAND;
435 	  else if (subset_compare (buf_ptr, "SPLIT"))
436 	    new_layout = SRC_DISASSEM_COMMAND;
437 	  else if (subset_compare (buf_ptr, "REGS") ||
438 		   subset_compare (buf_ptr, TUI_GENERAL_SPECIAL_REGS_NAME) ||
439 		   subset_compare (buf_ptr, TUI_GENERAL_REGS_NAME) ||
440 		   subset_compare (buf_ptr, TUI_FLOAT_REGS_NAME) ||
441 		   subset_compare (buf_ptr, TUI_SPECIAL_REGS_NAME))
442 	    {
443 	      if (cur_layout == SRC_COMMAND || cur_layout == SRC_DATA_COMMAND)
444 		new_layout = SRC_DATA_COMMAND;
445 	      else
446 		new_layout = DISASSEM_DATA_COMMAND;
447 
448 /* could ifdef out the following code. when compile with -z, there are null
449    pointer references that cause a core dump if 'layout regs' is the first
450    layout command issued by the user. HP has asked us to hook up this code
451    - edie epstein
452  */
453 	      if (subset_compare (buf_ptr, TUI_FLOAT_REGS_NAME))
454 		{
455 		  if (TUI_DATA_WIN->detail.data_display_info.regs_display_type !=
456 		      TUI_SFLOAT_REGS &&
457 		      TUI_DATA_WIN->detail.data_display_info.regs_display_type !=
458 		      TUI_DFLOAT_REGS)
459 		    dpy_type = TUI_SFLOAT_REGS;
460 		  else
461 		    dpy_type =
462 		      TUI_DATA_WIN->detail.data_display_info.regs_display_type;
463 		}
464 	      else if (subset_compare (buf_ptr,
465 				      TUI_GENERAL_SPECIAL_REGS_NAME))
466 		dpy_type = TUI_GENERAL_AND_SPECIAL_REGS;
467 	      else if (subset_compare (buf_ptr, TUI_GENERAL_REGS_NAME))
468 		dpy_type = TUI_GENERAL_REGS;
469 	      else if (subset_compare (buf_ptr, TUI_SPECIAL_REGS_NAME))
470 		dpy_type = TUI_SPECIAL_REGS;
471 	      else if (TUI_DATA_WIN)
472 		{
473 		  if (TUI_DATA_WIN->detail.data_display_info.regs_display_type !=
474 		      TUI_UNDEFINED_REGS)
475 		    dpy_type =
476 		      TUI_DATA_WIN->detail.data_display_info.regs_display_type;
477 		  else
478 		    dpy_type = TUI_GENERAL_REGS;
479 		}
480 
481 /* end of potential ifdef
482  */
483 
484 /* if ifdefed out code above, then assume that the user wishes to display the
485    general purpose registers
486  */
487 
488 /*              dpy_type = TUI_GENERAL_REGS;
489  */
490 	    }
491 	  else if (subset_compare (buf_ptr, "NEXT"))
492 	    new_layout = next_layout ();
493 	  else if (subset_compare (buf_ptr, "PREV"))
494 	    new_layout = prev_layout ();
495 	  else
496 	    status = TUI_FAILURE;
497 	  xfree (buf_ptr);
498 
499 	  tui_set_layout (new_layout, dpy_type);
500 	}
501     }
502   else
503     status = TUI_FAILURE;
504 
505   return status;
506 }
507 
508 
509 static CORE_ADDR
extract_display_start_addr(void)510 extract_display_start_addr (void)
511 {
512   enum tui_layout_type cur_layout = tui_current_layout ();
513   CORE_ADDR addr;
514   CORE_ADDR pc;
515   struct symtab_and_line cursal = get_current_source_symtab_and_line ();
516 
517   switch (cur_layout)
518     {
519     case SRC_COMMAND:
520     case SRC_DATA_COMMAND:
521       find_line_pc (cursal.symtab,
522 		    TUI_SRC_WIN->detail.source_info.start_line_or_addr.line_no,
523 		    &pc);
524       addr = pc;
525       break;
526     case DISASSEM_COMMAND:
527     case SRC_DISASSEM_COMMAND:
528     case DISASSEM_DATA_COMMAND:
529       addr = TUI_DISASM_WIN->detail.source_info.start_line_or_addr.addr;
530       break;
531     default:
532       addr = 0;
533       break;
534     }
535 
536   return addr;
537 }
538 
539 
540 static void
tui_handle_xdb_layout(struct tui_layout_def * layout_def)541 tui_handle_xdb_layout (struct tui_layout_def * layout_def)
542 {
543   if (layout_def->split)
544     {
545       tui_set_layout (SRC_DISASSEM_COMMAND, TUI_UNDEFINED_REGS);
546       tui_set_win_focus_to (tui_win_list[layout_def->display_mode]);
547     }
548   else
549     {
550       if (layout_def->display_mode == SRC_WIN)
551 	tui_set_layout (SRC_COMMAND, TUI_UNDEFINED_REGS);
552       else
553 	tui_set_layout (DISASSEM_DATA_COMMAND, layout_def->regs_display_type);
554     }
555 }
556 
557 
558 static void
tui_toggle_layout_command(char * arg,int from_tty)559 tui_toggle_layout_command (char *arg, int from_tty)
560 {
561   struct tui_layout_def * layout_def = tui_layout_def ();
562 
563   /* Make sure the curses mode is enabled.  */
564   tui_enable ();
565   if (layout_def->display_mode == SRC_WIN)
566     layout_def->display_mode = DISASSEM_WIN;
567   else
568     layout_def->display_mode = SRC_WIN;
569 
570   if (!layout_def->split)
571     tui_handle_xdb_layout (layout_def);
572 }
573 
574 
575 static void
tui_toggle_split_layout_command(char * arg,int from_tty)576 tui_toggle_split_layout_command (char *arg, int from_tty)
577 {
578   struct tui_layout_def * layout_def = tui_layout_def ();
579 
580   /* Make sure the curses mode is enabled.  */
581   tui_enable ();
582   layout_def->split = (!layout_def->split);
583   tui_handle_xdb_layout (layout_def);
584 }
585 
586 
587 static void
tui_layout_command(char * arg,int from_tty)588 tui_layout_command (char *arg, int from_tty)
589 {
590   /* Make sure the curses mode is enabled.  */
591   tui_enable ();
592 
593   /* Switch to the selected layout.  */
594   if (tui_set_layout_for_display_command (arg) != TUI_SUCCESS)
595     warning ("Invalid layout specified.\n%s", LAYOUT_USAGE);
596 
597 }
598 
599 /* Answer the previous layout to cycle to.  */
600 static enum tui_layout_type
next_layout(void)601 next_layout (void)
602 {
603   enum tui_layout_type new_layout;
604 
605   new_layout = tui_current_layout ();
606   if (new_layout == UNDEFINED_LAYOUT)
607     new_layout = SRC_COMMAND;
608   else
609     {
610       new_layout++;
611       if (new_layout == UNDEFINED_LAYOUT)
612 	new_layout = SRC_COMMAND;
613     }
614 
615   return new_layout;
616 }
617 
618 
619 /* Answer the next layout to cycle to.  */
620 static enum tui_layout_type
prev_layout(void)621 prev_layout (void)
622 {
623   enum tui_layout_type new_layout;
624 
625   new_layout = tui_current_layout ();
626   if (new_layout == SRC_COMMAND)
627     new_layout = DISASSEM_DATA_COMMAND;
628   else
629     {
630       new_layout--;
631       if (new_layout == UNDEFINED_LAYOUT)
632 	new_layout = DISASSEM_DATA_COMMAND;
633     }
634 
635   return new_layout;
636 }
637 
638 
639 
640 static void
make_command_window(struct tui_win_info ** win_info_ptr,int height,int origin_y)641 make_command_window (struct tui_win_info * * win_info_ptr, int height, int origin_y)
642 {
643   init_and_make_win ((void **) win_info_ptr,
644 		   CMD_WIN,
645 		   height,
646 		   tui_term_width (),
647 		   0,
648 		   origin_y,
649 		   DONT_BOX_WINDOW);
650 
651   (*win_info_ptr)->can_highlight = FALSE;
652 }
653 
654 
655 /*
656    ** make_source_window().
657  */
658 static void
make_source_window(struct tui_win_info ** win_info_ptr,int height,int origin_y)659 make_source_window (struct tui_win_info * * win_info_ptr, int height, int origin_y)
660 {
661   make_source_or_disasm_window (win_info_ptr, SRC_WIN, height, origin_y);
662 
663   return;
664 }				/* make_source_window */
665 
666 
667 /*
668    ** make_disasm_window().
669  */
670 static void
make_disasm_window(struct tui_win_info ** win_info_ptr,int height,int origin_y)671 make_disasm_window (struct tui_win_info * * win_info_ptr, int height, int origin_y)
672 {
673   make_source_or_disasm_window (win_info_ptr, DISASSEM_WIN, height, origin_y);
674 
675   return;
676 }				/* make_disasm_window */
677 
678 
679 static void
make_data_window(struct tui_win_info ** win_info_ptr,int height,int origin_y)680 make_data_window (struct tui_win_info * * win_info_ptr, int height, int origin_y)
681 {
682   init_and_make_win ((void **) win_info_ptr,
683 		   DATA_WIN,
684 		   height,
685 		   tui_term_width (),
686 		   0,
687 		   origin_y,
688 		   BOX_WINDOW);
689 }
690 
691 
692 
693 /* Show the Source/Command layout.  */
694 static void
show_source_command(void)695 show_source_command (void)
696 {
697   show_source_or_disasm_and_command (SRC_COMMAND);
698 }
699 
700 
701 /* Show the Dissassem/Command layout.  */
702 static void
show_disasm_command(void)703 show_disasm_command (void)
704 {
705   show_source_or_disasm_and_command (DISASSEM_COMMAND);
706 }
707 
708 
709 /* Show the Source/Disassem/Command layout.  */
710 static void
show_source_disasm_command(void)711 show_source_disasm_command (void)
712 {
713   if (tui_current_layout () != SRC_DISASSEM_COMMAND)
714     {
715       int cmd_height, src_height, asm_height;
716 
717       if (TUI_CMD_WIN != NULL)
718 	cmd_height = TUI_CMD_WIN->generic.height;
719       else
720 	cmd_height = tui_term_height () / 3;
721 
722       src_height = (tui_term_height () - cmd_height) / 2;
723       asm_height = tui_term_height () - (src_height + cmd_height);
724 
725       if (TUI_SRC_WIN == NULL)
726 	make_source_window (&TUI_SRC_WIN, src_height, 0);
727       else
728 	{
729 	  init_gen_win_info (&TUI_SRC_WIN->generic,
730 			   TUI_SRC_WIN->generic.type,
731 			   src_height,
732 			   TUI_SRC_WIN->generic.width,
733 			   TUI_SRC_WIN->detail.source_info.execution_info->width,
734 			   0);
735 	  TUI_SRC_WIN->can_highlight = TRUE;
736 	  init_gen_win_info (TUI_SRC_WIN->detail.source_info.execution_info,
737 			   EXEC_INFO_WIN,
738 			   src_height,
739 			   3,
740 			   0,
741 			   0);
742 	  tui_make_visible (&TUI_SRC_WIN->generic);
743 	  tui_make_visible (TUI_SRC_WIN->detail.source_info.execution_info);
744 	  TUI_SRC_WIN->detail.source_info.has_locator = FALSE;;
745 	}
746       if (TUI_SRC_WIN != NULL)
747 	{
748 	  struct tui_gen_win_info * locator = tui_locator_win_info_ptr ();
749 
750 	  tui_show_source_content (TUI_SRC_WIN);
751 	  if (TUI_DISASM_WIN == NULL)
752 	    {
753 	      make_disasm_window (&TUI_DISASM_WIN, asm_height, src_height - 1);
754 	      init_and_make_win ((void **) & locator,
755 			       LOCATOR_WIN,
756 			       2 /* 1 */ ,
757 			       tui_term_width (),
758 			       0,
759 			       (src_height + asm_height) - 1,
760 			       DONT_BOX_WINDOW);
761 	    }
762 	  else
763 	    {
764 	      init_gen_win_info (locator,
765 			       LOCATOR_WIN,
766 			       2 /* 1 */ ,
767 			       tui_term_width (),
768 			       0,
769 			       (src_height + asm_height) - 1);
770 	      TUI_DISASM_WIN->detail.source_info.has_locator = TRUE;
771 	      init_gen_win_info (
772 				&TUI_DISASM_WIN->generic,
773 				TUI_DISASM_WIN->generic.type,
774 				asm_height,
775 				TUI_DISASM_WIN->generic.width,
776 			TUI_DISASM_WIN->detail.source_info.execution_info->width,
777 				src_height - 1);
778 	      init_gen_win_info (TUI_DISASM_WIN->detail.source_info.execution_info,
779 			       EXEC_INFO_WIN,
780 			       asm_height,
781 			       3,
782 			       0,
783 			       src_height - 1);
784 	      TUI_DISASM_WIN->can_highlight = TRUE;
785 	      tui_make_visible (&TUI_DISASM_WIN->generic);
786 	      tui_make_visible (TUI_DISASM_WIN->detail.source_info.execution_info);
787 	    }
788 	  if (TUI_DISASM_WIN != NULL)
789 	    {
790 	      TUI_SRC_WIN->detail.source_info.has_locator = FALSE;
791 	      TUI_DISASM_WIN->detail.source_info.has_locator = TRUE;
792 	      tui_make_visible (locator);
793 	      tui_show_locator_content ();
794 	      tui_show_source_content (TUI_DISASM_WIN);
795 
796 	      if (TUI_CMD_WIN == NULL)
797 		make_command_window (&TUI_CMD_WIN,
798 				    cmd_height,
799 				    tui_term_height () - cmd_height);
800 	      else
801 		{
802 		  init_gen_win_info (&TUI_CMD_WIN->generic,
803 				   TUI_CMD_WIN->generic.type,
804 				   TUI_CMD_WIN->generic.height,
805 				   TUI_CMD_WIN->generic.width,
806 				   0,
807 				   TUI_CMD_WIN->generic.origin.y);
808 		  TUI_CMD_WIN->can_highlight = FALSE;
809 		  tui_make_visible (&TUI_CMD_WIN->generic);
810 		}
811 	      if (TUI_CMD_WIN != NULL)
812 		tui_refresh_win (&TUI_CMD_WIN->generic);
813 	    }
814 	}
815       tui_set_current_layout_to (SRC_DISASSEM_COMMAND);
816     }
817 }
818 
819 
820 /* Show the Source/Data/Command or the Dissassembly/Data/Command
821    layout.  */
822 static void
show_data(enum tui_layout_type new_layout)823 show_data (enum tui_layout_type new_layout)
824 {
825   int total_height = (tui_term_height () - TUI_CMD_WIN->generic.height);
826   int src_height, data_height;
827   enum tui_win_type win_type;
828   struct tui_gen_win_info * locator = tui_locator_win_info_ptr ();
829 
830 
831   data_height = total_height / 2;
832   src_height = total_height - data_height;
833   tui_make_all_invisible ();
834   tui_make_invisible (locator);
835   make_data_window (&TUI_DATA_WIN, data_height, 0);
836   TUI_DATA_WIN->can_highlight = TRUE;
837   if (new_layout == SRC_DATA_COMMAND)
838     win_type = SRC_WIN;
839   else
840     win_type = DISASSEM_WIN;
841   if (tui_win_list[win_type] == NULL)
842     {
843       if (win_type == SRC_WIN)
844 	make_source_window (&tui_win_list[win_type], src_height, data_height - 1);
845       else
846 	make_disasm_window (&tui_win_list[win_type], src_height, data_height - 1);
847       init_and_make_win ((void **) & locator,
848 		       LOCATOR_WIN,
849 		       2 /* 1 */ ,
850 		       tui_term_width (),
851 		       0,
852 		       total_height - 1,
853 		       DONT_BOX_WINDOW);
854     }
855   else
856     {
857       init_gen_win_info (&tui_win_list[win_type]->generic,
858 		       tui_win_list[win_type]->generic.type,
859 		       src_height,
860 		       tui_win_list[win_type]->generic.width,
861 		   tui_win_list[win_type]->detail.source_info.execution_info->width,
862 		       data_height - 1);
863       init_gen_win_info (tui_win_list[win_type]->detail.source_info.execution_info,
864 		       EXEC_INFO_WIN,
865 		       src_height,
866 		       3,
867 		       0,
868 		       data_height - 1);
869       tui_make_visible (&tui_win_list[win_type]->generic);
870       tui_make_visible (tui_win_list[win_type]->detail.source_info.execution_info);
871       init_gen_win_info (locator,
872 		       LOCATOR_WIN,
873 		       2 /* 1 */ ,
874 		       tui_term_width (),
875 		       0,
876 		       total_height - 1);
877     }
878   tui_win_list[win_type]->detail.source_info.has_locator = TRUE;
879   tui_make_visible (locator);
880   tui_show_locator_content ();
881   tui_add_to_source_windows (tui_win_list[win_type]);
882   tui_set_current_layout_to (new_layout);
883 }
884 
885 /*
886    ** init_gen_win_info().
887  */
888 static void
init_gen_win_info(struct tui_gen_win_info * win_info,enum tui_win_type type,int height,int width,int origin_x,int origin_y)889 init_gen_win_info (struct tui_gen_win_info * win_info, enum tui_win_type type,
890                  int height, int width, int origin_x, int origin_y)
891 {
892   int h = height;
893 
894   win_info->type = type;
895   win_info->width = width;
896   win_info->height = h;
897   if (h > 1)
898     {
899       win_info->viewport_height = h - 1;
900       if (win_info->type != CMD_WIN)
901 	win_info->viewport_height--;
902     }
903   else
904     win_info->viewport_height = 1;
905   win_info->origin.x = origin_x;
906   win_info->origin.y = origin_y;
907 
908   return;
909 }				/* init_gen_win_info */
910 
911 /*
912    ** init_and_make_win().
913  */
914 static void
init_and_make_win(void ** win_info_ptr,enum tui_win_type win_type,int height,int width,int origin_x,int origin_y,int box_it)915 init_and_make_win (void ** win_info_ptr, enum tui_win_type win_type,
916                  int height, int width, int origin_x, int origin_y, int box_it)
917 {
918   void *opaque_win_info = *win_info_ptr;
919   struct tui_gen_win_info * generic;
920 
921   if (opaque_win_info == NULL)
922     {
923       if (tui_win_is_auxillary (win_type))
924 	opaque_win_info = (void *) tui_alloc_generic_win_info ();
925       else
926 	opaque_win_info = (void *) tui_alloc_win_info (win_type);
927     }
928   if (tui_win_is_auxillary (win_type))
929     generic = (struct tui_gen_win_info *) opaque_win_info;
930   else
931     generic = &((struct tui_win_info *) opaque_win_info)->generic;
932 
933   if (opaque_win_info != NULL)
934     {
935       init_gen_win_info (generic, win_type, height, width, origin_x, origin_y);
936       if (!tui_win_is_auxillary (win_type))
937 	{
938 	  if (generic->type == CMD_WIN)
939 	    ((struct tui_win_info *) opaque_win_info)->can_highlight = FALSE;
940 	  else
941 	    ((struct tui_win_info *) opaque_win_info)->can_highlight = TRUE;
942 	}
943       tui_make_window (generic, box_it);
944     }
945   *win_info_ptr = opaque_win_info;
946 }
947 
948 
949 static void
make_source_or_disasm_window(struct tui_win_info ** win_info_ptr,enum tui_win_type type,int height,int origin_y)950 make_source_or_disasm_window (struct tui_win_info * * win_info_ptr, enum tui_win_type type,
951                              int height, int origin_y)
952 {
953   struct tui_gen_win_info * execution_info = (struct tui_gen_win_info *) NULL;
954 
955   /*
956      ** Create the exeuction info window.
957    */
958   if (type == SRC_WIN)
959     execution_info = tui_source_exec_info_win_ptr ();
960   else
961     execution_info = tui_disassem_exec_info_win_ptr ();
962   init_and_make_win ((void **) & execution_info,
963 		   EXEC_INFO_WIN,
964 		   height,
965 		   3,
966 		   0,
967 		   origin_y,
968 		   DONT_BOX_WINDOW);
969   /*
970      ** Now create the source window.
971    */
972   init_and_make_win ((void **) win_info_ptr,
973 		   type,
974 		   height,
975 		   tui_term_width () - execution_info->width,
976 		   execution_info->width,
977 		   origin_y,
978 		   BOX_WINDOW);
979 
980   (*win_info_ptr)->detail.source_info.execution_info = execution_info;
981 }
982 
983 
984 /* Show the Source/Command or the Disassem layout.   */
985 static void
show_source_or_disasm_and_command(enum tui_layout_type layout_type)986 show_source_or_disasm_and_command (enum tui_layout_type layout_type)
987 {
988   if (tui_current_layout () != layout_type)
989     {
990       struct tui_win_info * *win_info_ptr;
991       int src_height, cmd_height;
992       struct tui_gen_win_info * locator = tui_locator_win_info_ptr ();
993 
994       if (TUI_CMD_WIN != NULL)
995 	cmd_height = TUI_CMD_WIN->generic.height;
996       else
997 	cmd_height = tui_term_height () / 3;
998       src_height = tui_term_height () - cmd_height;
999 
1000 
1001       if (layout_type == SRC_COMMAND)
1002 	win_info_ptr = &TUI_SRC_WIN;
1003       else
1004 	win_info_ptr = &TUI_DISASM_WIN;
1005 
1006       if ((*win_info_ptr) == NULL)
1007 	{
1008 	  if (layout_type == SRC_COMMAND)
1009 	    make_source_window (win_info_ptr, src_height - 1, 0);
1010 	  else
1011 	    make_disasm_window (win_info_ptr, src_height - 1, 0);
1012 	  init_and_make_win ((void **) & locator,
1013 			   LOCATOR_WIN,
1014 			   2 /* 1 */ ,
1015 			   tui_term_width (),
1016 			   0,
1017 			   src_height - 1,
1018 			   DONT_BOX_WINDOW);
1019 	}
1020       else
1021 	{
1022 	  init_gen_win_info (locator,
1023 			   LOCATOR_WIN,
1024 			   2 /* 1 */ ,
1025 			   tui_term_width (),
1026 			   0,
1027 			   src_height - 1);
1028 	  (*win_info_ptr)->detail.source_info.has_locator = TRUE;
1029 	  init_gen_win_info (
1030 			    &(*win_info_ptr)->generic,
1031 			    (*win_info_ptr)->generic.type,
1032 			    src_height - 1,
1033 			    (*win_info_ptr)->generic.width,
1034 		      (*win_info_ptr)->detail.source_info.execution_info->width,
1035 			    0);
1036 	  init_gen_win_info ((*win_info_ptr)->detail.source_info.execution_info,
1037 			   EXEC_INFO_WIN,
1038 			   src_height - 1,
1039 			   3,
1040 			   0,
1041 			   0);
1042 	  (*win_info_ptr)->can_highlight = TRUE;
1043 	  tui_make_visible (&(*win_info_ptr)->generic);
1044 	  tui_make_visible ((*win_info_ptr)->detail.source_info.execution_info);
1045 	}
1046       if ((*win_info_ptr) != NULL)
1047 	{
1048 	  (*win_info_ptr)->detail.source_info.has_locator = TRUE;
1049 	  tui_make_visible (locator);
1050 	  tui_show_locator_content ();
1051 	  tui_show_source_content (*win_info_ptr);
1052 
1053 	  if (TUI_CMD_WIN == NULL)
1054 	    {
1055 	      make_command_window (&TUI_CMD_WIN, cmd_height, src_height);
1056 	      tui_refresh_win (&TUI_CMD_WIN->generic);
1057 	    }
1058 	  else
1059 	    {
1060 	      init_gen_win_info (&TUI_CMD_WIN->generic,
1061 			       TUI_CMD_WIN->generic.type,
1062 			       TUI_CMD_WIN->generic.height,
1063 			       TUI_CMD_WIN->generic.width,
1064 			       TUI_CMD_WIN->generic.origin.x,
1065 			       TUI_CMD_WIN->generic.origin.y);
1066 	      TUI_CMD_WIN->can_highlight = FALSE;
1067 	      tui_make_visible (&TUI_CMD_WIN->generic);
1068 	    }
1069 	}
1070       tui_set_current_layout_to (layout_type);
1071     }
1072 }
1073