1 /* TUI display source/assembly window.
3 Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2006, 2007, 2008,
4 2009, 2010 Free Software Foundation, Inc.
6 Contributed by Hewlett-Packard Company.
8 This file is part of GDB.
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 3 of the License, or
13 (at your option) any later version.
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.
20 You should have received a copy of the GNU General Public License
21 along with this program. If not, see <http://www.gnu.org/licenses/>. */
27 #include "breakpoint.h"
33 #include "tui/tui-data.h"
34 #include "tui/tui-stack.h"
35 #include "tui/tui-win.h"
36 #include "tui/tui-wingeneral.h"
37 #include "tui/tui-winsource.h"
38 #include "tui/tui-source.h"
39 #include "tui/tui-disasm.h"
41 #include "gdb_string.h"
42 #include "gdb_curses.h"
43 #include "gdb_assert.h"
45 /* Function to display the "main" routine. */
47 tui_display_main (void)
49 if ((tui_source_windows ())->count > 0)
51 struct gdbarch *gdbarch;
54 tui_get_begin_asm_address (&gdbarch, &addr);
55 if (addr != (CORE_ADDR) 0)
57 struct symtab_and_line sal;
59 tui_update_source_windows_with_addr (gdbarch, addr);
60 sal = find_pc_line (addr, 0);
62 tui_update_locator_filename (sal.symtab->filename);
64 tui_update_locator_filename ("??");
71 /* Function to display source in the source window. This function
72 initializes the horizontal scroll to 0. */
74 tui_update_source_window (struct tui_win_info *win_info,
75 struct gdbarch *gdbarch,
77 struct tui_line_or_address line_or_addr,
80 win_info->detail.source_info.horizontal_offset = 0;
81 tui_update_source_window_as_is (win_info, gdbarch, s, line_or_addr, noerror);
87 /* Function to display source in the source/asm window. This function
88 shows the source as specified by the horizontal offset. */
90 tui_update_source_window_as_is (struct tui_win_info *win_info,
91 struct gdbarch *gdbarch,
93 struct tui_line_or_address line_or_addr,
98 if (win_info->generic.type == SRC_WIN)
99 ret = tui_set_source_content (s, line_or_addr.u.line_no, noerror);
101 ret = tui_set_disassem_content (gdbarch, line_or_addr.u.addr);
103 if (ret == TUI_FAILURE)
105 tui_clear_source_content (win_info, EMPTY_SOURCE_PROMPT);
106 tui_clear_exec_info_content (win_info);
110 tui_update_breakpoint_info (win_info, 0);
111 tui_show_source_content (win_info);
112 tui_update_exec_info (win_info);
113 if (win_info->generic.type == SRC_WIN)
115 struct symtab_and_line sal;
117 sal.line = line_or_addr.u.line_no +
118 (win_info->generic.content_size - 2);
120 set_current_source_symtab_and_line (&sal);
121 /* If the focus was in the asm win, put it in the src win if
122 we don't have a split layout. */
123 if (tui_win_with_focus () == TUI_DISASM_WIN
124 && tui_current_layout () != SRC_DISASSEM_COMMAND)
125 tui_set_win_focus_to (TUI_SRC_WIN);
134 /* Function to ensure that the source and/or disassemly windows
135 reflect the input address. */
137 tui_update_source_windows_with_addr (struct gdbarch *gdbarch, CORE_ADDR addr)
141 struct symtab_and_line sal;
142 struct tui_line_or_address l;
144 switch (tui_current_layout ())
146 case DISASSEM_COMMAND:
147 case DISASSEM_DATA_COMMAND:
148 tui_show_disassem (gdbarch, addr);
150 case SRC_DISASSEM_COMMAND:
151 tui_show_disassem_and_update_source (gdbarch, addr);
154 sal = find_pc_line (addr, 0);
156 l.u.line_no = sal.line;
157 tui_show_symtab_source (gdbarch, sal.symtab, l, FALSE);
165 for (i = 0; i < (tui_source_windows ())->count; i++)
167 struct tui_win_info *win_info = (tui_source_windows ())->list[i];
169 tui_clear_source_content (win_info, EMPTY_SOURCE_PROMPT);
170 tui_clear_exec_info_content (win_info);
175 /* Function to ensure that the source and/or disassemly windows
176 reflect the input address. */
178 tui_update_source_windows_with_line (struct symtab *s, int line)
180 struct gdbarch *gdbarch;
182 struct tui_line_or_address l;
187 gdbarch = get_objfile_arch (s->objfile);
189 switch (tui_current_layout ())
191 case DISASSEM_COMMAND:
192 case DISASSEM_DATA_COMMAND:
193 find_line_pc (s, line, &pc);
194 tui_update_source_windows_with_addr (gdbarch, pc);
199 tui_show_symtab_source (gdbarch, s, l, FALSE);
200 if (tui_current_layout () == SRC_DISASSEM_COMMAND)
202 find_line_pc (s, line, &pc);
203 tui_show_disassem (gdbarch, pc);
212 tui_clear_source_content (struct tui_win_info *win_info,
215 if (win_info != NULL)
219 win_info->generic.content_in_use = FALSE;
220 tui_erase_source_content (win_info, display_prompt);
221 for (i = 0; i < win_info->generic.content_size; i++)
223 struct tui_win_element *element =
224 (struct tui_win_element *) win_info->generic.content[i];
226 element->which_element.source.has_break = FALSE;
227 element->which_element.source.is_exec_point = FALSE;
234 tui_erase_source_content (struct tui_win_info *win_info,
238 int half_width = (win_info->generic.width - 2) / 2;
240 if (win_info->generic.handle != (WINDOW *) NULL)
242 werase (win_info->generic.handle);
243 tui_check_and_display_highlight_if_needed (win_info);
244 if (display_prompt == EMPTY_SOURCE_PROMPT)
248 if (win_info->generic.type == SRC_WIN)
249 no_src_str = NO_SRC_STRING;
251 no_src_str = NO_DISASSEM_STRING;
252 if (strlen (no_src_str) >= half_width)
255 x_pos = half_width - strlen (no_src_str);
256 mvwaddstr (win_info->generic.handle,
257 (win_info->generic.height / 2),
261 /* elz: Added this function call to set the real contents of
262 the window to what is on the screen, so that later calls
263 to refresh, do display the correct stuff, and not the old
266 tui_set_source_content_nil (win_info, no_src_str);
268 tui_refresh_win (&win_info->generic);
273 /* Redraw the complete line of a source or disassembly window. */
275 tui_show_source_line (struct tui_win_info *win_info, int lineno)
277 struct tui_win_element *line;
280 line = (struct tui_win_element *) win_info->generic.content[lineno - 1];
281 if (line->which_element.source.is_exec_point)
282 wattron (win_info->generic.handle, A_STANDOUT);
284 mvwaddstr (win_info->generic.handle, lineno, 1,
285 line->which_element.source.line);
286 if (line->which_element.source.is_exec_point)
287 wattroff (win_info->generic.handle, A_STANDOUT);
289 /* Clear to end of line but stop before the border. */
290 getyx (win_info->generic.handle, y, x);
291 while (x + 1 < win_info->generic.width)
293 waddch (win_info->generic.handle, ' ');
294 getyx (win_info->generic.handle, y, x);
299 tui_show_source_content (struct tui_win_info *win_info)
301 if (win_info->generic.content_size > 0)
305 for (lineno = 1; lineno <= win_info->generic.content_size; lineno++)
306 tui_show_source_line (win_info, lineno);
309 tui_erase_source_content (win_info, TRUE);
311 tui_check_and_display_highlight_if_needed (win_info);
312 tui_refresh_win (&win_info->generic);
313 win_info->generic.content_in_use = TRUE;
317 /* Scroll the source forward or backward horizontally. */
319 tui_horizontal_source_scroll (struct tui_win_info *win_info,
320 enum tui_scroll_direction direction,
323 if (win_info->generic.content != NULL)
325 struct gdbarch *gdbarch = win_info->detail.source_info.gdbarch;
327 struct symtab *s = NULL;
329 if (win_info->generic.type == SRC_WIN)
331 struct symtab_and_line cursal = get_current_source_symtab_and_line ();
333 if (cursal.symtab == NULL)
334 s = find_pc_symtab (get_frame_pc (get_selected_frame (NULL)));
339 if (direction == LEFT_SCROLL)
340 offset = win_info->detail.source_info.horizontal_offset + num_to_scroll;
344 win_info->detail.source_info.horizontal_offset - num_to_scroll) < 0)
347 win_info->detail.source_info.horizontal_offset = offset;
348 tui_update_source_window_as_is (win_info, gdbarch, s,
349 ((struct tui_win_element *)
350 win_info->generic.content[0])->which_element.source.line_or_addr,
358 /* Set or clear the has_break flag in the line whose line is
362 tui_set_is_exec_point_at (struct tui_line_or_address l,
363 struct tui_win_info *win_info)
367 tui_win_content content = (tui_win_content) win_info->generic.content;
370 while (i < win_info->generic.content_size)
373 struct tui_line_or_address content_loa =
374 content[i]->which_element.source.line_or_addr;
376 gdb_assert (l.loa == LOA_ADDRESS || l.loa == LOA_LINE);
377 gdb_assert (content_loa.loa == LOA_LINE
378 || content_loa.loa == LOA_ADDRESS);
379 if (content_loa.loa == l.loa
380 && ((l.loa == LOA_LINE && content_loa.u.line_no == l.u.line_no)
381 || (content_loa.u.addr == l.u.addr)))
385 if (new_state != content[i]->which_element.source.is_exec_point)
388 content[i]->which_element.source.is_exec_point = new_state;
389 tui_show_source_line (win_info, i + 1);
394 tui_refresh_win (&win_info->generic);
397 /* Update the execution windows to show the active breakpoints.
398 This is called whenever a breakpoint is inserted, removed or
399 has its state changed. */
401 tui_update_all_breakpoint_info (void)
403 struct tui_list *list = tui_source_windows ();
406 for (i = 0; i < list->count; i++)
408 struct tui_win_info *win = list->list[i];
410 if (tui_update_breakpoint_info (win, FALSE))
412 tui_update_exec_info (win);
418 /* Scan the source window and the breakpoints to update the has_break
419 information for each line.
421 Returns 1 if something changed and the execution window must be
425 tui_update_breakpoint_info (struct tui_win_info *win,
429 int need_refresh = 0;
430 struct tui_source_info *src = &win->detail.source_info;
432 for (i = 0; i < win->generic.content_size; i++)
434 struct breakpoint *bp;
435 extern struct breakpoint *breakpoint_chain;
437 struct tui_source_element *line;
439 line = &((struct tui_win_element *) win->generic.content[i])->which_element.source;
440 if (current_only && !line->is_exec_point)
443 /* Scan each breakpoint to see if the current line has something to
444 do with it. Identify enable/disabled breakpoints as well as
445 those that we already hit. */
447 for (bp = breakpoint_chain;
448 bp != (struct breakpoint *) NULL;
451 gdb_assert (line->line_or_addr.loa == LOA_LINE
452 || line->line_or_addr.loa == LOA_ADDRESS);
453 if ((win == TUI_SRC_WIN
455 && (strcmp (src->filename, bp->source_file) == 0)
456 && line->line_or_addr.loa == LOA_LINE
457 && bp->line_number == line->line_or_addr.u.line_no)
458 || (win == TUI_DISASM_WIN
459 && line->line_or_addr.loa == LOA_ADDRESS
461 && bp->loc->address == line->line_or_addr.u.addr))
463 if (bp->enable_state == bp_disabled)
464 mode |= TUI_BP_DISABLED;
466 mode |= TUI_BP_ENABLED;
470 mode |= TUI_BP_CONDITIONAL;
471 if (bp->type == bp_hardware_breakpoint)
472 mode |= TUI_BP_HARDWARE;
475 if (line->has_break != mode)
477 line->has_break = mode;
485 /* Function to initialize the content of the execution info window,
486 based upon the input window which is either the source or
487 disassembly window. */
489 tui_set_exec_info_content (struct tui_win_info *win_info)
491 enum tui_status ret = TUI_SUCCESS;
493 if (win_info->detail.source_info.execution_info != (struct tui_gen_win_info *) NULL)
495 struct tui_gen_win_info *exec_info_ptr = win_info->detail.source_info.execution_info;
497 if (exec_info_ptr->content == NULL)
498 exec_info_ptr->content =
499 (void **) tui_alloc_content (win_info->generic.height,
500 exec_info_ptr->type);
501 if (exec_info_ptr->content != NULL)
505 tui_update_breakpoint_info (win_info, 1);
506 for (i = 0; i < win_info->generic.content_size; i++)
508 struct tui_win_element *element;
509 struct tui_win_element *src_element;
512 element = (struct tui_win_element *) exec_info_ptr->content[i];
513 src_element = (struct tui_win_element *) win_info->generic.content[i];
515 memset(element->which_element.simple_string, ' ',
516 sizeof(element->which_element.simple_string));
517 element->which_element.simple_string[TUI_EXECINFO_SIZE - 1] = 0;
519 /* Now update the exec info content based upon the state
520 of each line as indicated by the source content. */
521 mode = src_element->which_element.source.has_break;
522 if (mode & TUI_BP_HIT)
523 element->which_element.simple_string[TUI_BP_HIT_POS] =
524 (mode & TUI_BP_HARDWARE) ? 'H' : 'B';
525 else if (mode & (TUI_BP_ENABLED | TUI_BP_DISABLED))
526 element->which_element.simple_string[TUI_BP_HIT_POS] =
527 (mode & TUI_BP_HARDWARE) ? 'h' : 'b';
529 if (mode & TUI_BP_ENABLED)
530 element->which_element.simple_string[TUI_BP_BREAK_POS] = '+';
531 else if (mode & TUI_BP_DISABLED)
532 element->which_element.simple_string[TUI_BP_BREAK_POS] = '-';
534 if (src_element->which_element.source.is_exec_point)
535 element->which_element.simple_string[TUI_EXEC_POS] = '>';
537 exec_info_ptr->content_size = win_info->generic.content_size;
548 tui_show_exec_info_content (struct tui_win_info *win_info)
550 struct tui_gen_win_info *exec_info = win_info->detail.source_info.execution_info;
553 werase (exec_info->handle);
554 tui_refresh_win (exec_info);
555 for (cur_line = 1; (cur_line <= exec_info->content_size); cur_line++)
556 mvwaddstr (exec_info->handle,
559 ((struct tui_win_element *)
560 exec_info->content[cur_line - 1])->which_element.simple_string);
561 tui_refresh_win (exec_info);
562 exec_info->content_in_use = TRUE;
567 tui_erase_exec_info_content (struct tui_win_info *win_info)
569 struct tui_gen_win_info *exec_info = win_info->detail.source_info.execution_info;
571 werase (exec_info->handle);
572 tui_refresh_win (exec_info);
576 tui_clear_exec_info_content (struct tui_win_info *win_info)
578 win_info->detail.source_info.execution_info->content_in_use = FALSE;
579 tui_erase_exec_info_content (win_info);
584 /* Function to update the execution info window. */
586 tui_update_exec_info (struct tui_win_info *win_info)
588 tui_set_exec_info_content (win_info);
589 tui_show_exec_info_content (win_info);
593 tui_alloc_source_buffer (struct tui_win_info *win_info)
596 int i, line_width, max_lines;
598 max_lines = win_info->generic.height; /* Less the highlight box. */
599 line_width = win_info->generic.width - 1;
601 * Allocate the buffer for the source lines. Do this only once
602 * since they will be re-used for all source displays. The only
603 * other time this will be done is when a window's size changes.
605 if (win_info->generic.content == NULL)
607 src_line_buf = (char *)
608 xmalloc ((max_lines * line_width) * sizeof (char));
609 if (src_line_buf == (char *) NULL)
611 fputs_unfiltered ("Unable to Allocate Memory for Source or Disassembly Display.\n",
615 /* Allocate the content list. */
616 if ((win_info->generic.content =
617 (void **) tui_alloc_content (max_lines, SRC_WIN)) == NULL)
619 xfree (src_line_buf);
620 fputs_unfiltered ("Unable to Allocate Memory for Source or Disassembly Display.\n",
624 for (i = 0; i < max_lines; i++)
625 ((struct tui_win_element *)
626 win_info->generic.content[i])->which_element.source.line =
627 src_line_buf + (line_width * i);
634 /* Answer whether the a particular line number or address is displayed
635 in the current source window. */
637 tui_line_is_displayed (int line,
638 struct tui_win_info *win_info,
641 int is_displayed = FALSE;
645 threshold = SCROLL_THRESHOLD;
649 while (i < win_info->generic.content_size - threshold
652 is_displayed = (((struct tui_win_element *)
653 win_info->generic.content[i])->which_element.source.line_or_addr.loa
655 && (((struct tui_win_element *)
656 win_info->generic.content[i])->which_element.source.line_or_addr.u.line_no
665 /* Answer whether the a particular line number or address is displayed
666 in the current source window. */
668 tui_addr_is_displayed (CORE_ADDR addr,
669 struct tui_win_info *win_info,
672 int is_displayed = FALSE;
676 threshold = SCROLL_THRESHOLD;
680 while (i < win_info->generic.content_size - threshold
683 is_displayed = (((struct tui_win_element *)
684 win_info->generic.content[i])->which_element.source.line_or_addr.loa
686 && (((struct tui_win_element *)
687 win_info->generic.content[i])->which_element.source.line_or_addr.u.addr
696 /*****************************************
697 ** STATIC LOCAL FUNCTIONS **
698 ******************************************/