1 /* TUI display source/assembly window.
3 Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2006, 2007, 2008,
4 2009, 2010, 2011 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
332 = get_current_source_symtab_and_line ();
334 if (cursal.symtab == NULL)
335 s = find_pc_symtab (get_frame_pc (get_selected_frame (NULL)));
340 if (direction == LEFT_SCROLL)
341 offset = win_info->detail.source_info.horizontal_offset
345 if ((offset = win_info->detail.source_info.horizontal_offset
346 - num_to_scroll) < 0)
349 win_info->detail.source_info.horizontal_offset = offset;
350 tui_update_source_window_as_is (win_info, gdbarch, s,
351 ((struct tui_win_element *)
352 win_info->generic.content[0])->which_element.source.line_or_addr,
360 /* Set or clear the has_break flag in the line whose line is
364 tui_set_is_exec_point_at (struct tui_line_or_address l,
365 struct tui_win_info *win_info)
369 tui_win_content content = (tui_win_content) win_info->generic.content;
372 while (i < win_info->generic.content_size)
375 struct tui_line_or_address content_loa =
376 content[i]->which_element.source.line_or_addr;
378 gdb_assert (l.loa == LOA_ADDRESS || l.loa == LOA_LINE);
379 gdb_assert (content_loa.loa == LOA_LINE
380 || content_loa.loa == LOA_ADDRESS);
381 if (content_loa.loa == l.loa
382 && ((l.loa == LOA_LINE && content_loa.u.line_no == l.u.line_no)
383 || (content_loa.u.addr == l.u.addr)))
387 if (new_state != content[i]->which_element.source.is_exec_point)
390 content[i]->which_element.source.is_exec_point = new_state;
391 tui_show_source_line (win_info, i + 1);
396 tui_refresh_win (&win_info->generic);
399 /* Update the execution windows to show the active breakpoints.
400 This is called whenever a breakpoint is inserted, removed or
401 has its state changed. */
403 tui_update_all_breakpoint_info (void)
405 struct tui_list *list = tui_source_windows ();
408 for (i = 0; i < list->count; i++)
410 struct tui_win_info *win = list->list[i];
412 if (tui_update_breakpoint_info (win, FALSE))
414 tui_update_exec_info (win);
420 /* Scan the source window and the breakpoints to update the has_break
421 information for each line.
423 Returns 1 if something changed and the execution window must be
427 tui_update_breakpoint_info (struct tui_win_info *win,
431 int need_refresh = 0;
432 struct tui_source_info *src = &win->detail.source_info;
434 for (i = 0; i < win->generic.content_size; i++)
436 struct breakpoint *bp;
437 extern struct breakpoint *breakpoint_chain;
439 struct tui_source_element *line;
441 line = &((struct tui_win_element *)
442 win->generic.content[i])->which_element.source;
443 if (current_only && !line->is_exec_point)
446 /* Scan each breakpoint to see if the current line has something to
447 do with it. Identify enable/disabled breakpoints as well as
448 those that we already hit. */
450 for (bp = breakpoint_chain;
451 bp != (struct breakpoint *) NULL;
454 gdb_assert (line->line_or_addr.loa == LOA_LINE
455 || line->line_or_addr.loa == LOA_ADDRESS);
456 if ((win == TUI_SRC_WIN
458 && (strcmp (src->filename, bp->source_file) == 0)
459 && line->line_or_addr.loa == LOA_LINE
460 && bp->line_number == line->line_or_addr.u.line_no)
461 || (win == TUI_DISASM_WIN
462 && line->line_or_addr.loa == LOA_ADDRESS
464 && bp->loc->address == line->line_or_addr.u.addr))
466 if (bp->enable_state == bp_disabled)
467 mode |= TUI_BP_DISABLED;
469 mode |= TUI_BP_ENABLED;
473 mode |= TUI_BP_CONDITIONAL;
474 if (bp->type == bp_hardware_breakpoint)
475 mode |= TUI_BP_HARDWARE;
478 if (line->has_break != mode)
480 line->has_break = mode;
488 /* Function to initialize the content of the execution info window,
489 based upon the input window which is either the source or
490 disassembly window. */
492 tui_set_exec_info_content (struct tui_win_info *win_info)
494 enum tui_status ret = TUI_SUCCESS;
496 if (win_info->detail.source_info.execution_info
497 != (struct tui_gen_win_info *) NULL)
499 struct tui_gen_win_info *exec_info_ptr
500 = win_info->detail.source_info.execution_info;
502 if (exec_info_ptr->content == NULL)
503 exec_info_ptr->content =
504 (void **) tui_alloc_content (win_info->generic.height,
505 exec_info_ptr->type);
506 if (exec_info_ptr->content != NULL)
510 tui_update_breakpoint_info (win_info, 1);
511 for (i = 0; i < win_info->generic.content_size; i++)
513 struct tui_win_element *element;
514 struct tui_win_element *src_element;
517 element = (struct tui_win_element *) exec_info_ptr->content[i];
518 src_element = (struct tui_win_element *)
519 win_info->generic.content[i];
521 memset(element->which_element.simple_string, ' ',
522 sizeof(element->which_element.simple_string));
523 element->which_element.simple_string[TUI_EXECINFO_SIZE - 1] = 0;
525 /* Now update the exec info content based upon the state
526 of each line as indicated by the source content. */
527 mode = src_element->which_element.source.has_break;
528 if (mode & TUI_BP_HIT)
529 element->which_element.simple_string[TUI_BP_HIT_POS] =
530 (mode & TUI_BP_HARDWARE) ? 'H' : 'B';
531 else if (mode & (TUI_BP_ENABLED | TUI_BP_DISABLED))
532 element->which_element.simple_string[TUI_BP_HIT_POS] =
533 (mode & TUI_BP_HARDWARE) ? 'h' : 'b';
535 if (mode & TUI_BP_ENABLED)
536 element->which_element.simple_string[TUI_BP_BREAK_POS] = '+';
537 else if (mode & TUI_BP_DISABLED)
538 element->which_element.simple_string[TUI_BP_BREAK_POS] = '-';
540 if (src_element->which_element.source.is_exec_point)
541 element->which_element.simple_string[TUI_EXEC_POS] = '>';
543 exec_info_ptr->content_size = win_info->generic.content_size;
554 tui_show_exec_info_content (struct tui_win_info *win_info)
556 struct tui_gen_win_info *exec_info
557 = win_info->detail.source_info.execution_info;
560 werase (exec_info->handle);
561 tui_refresh_win (exec_info);
562 for (cur_line = 1; (cur_line <= exec_info->content_size); cur_line++)
563 mvwaddstr (exec_info->handle,
566 ((struct tui_win_element *)
567 exec_info->content[cur_line - 1])->which_element.simple_string);
568 tui_refresh_win (exec_info);
569 exec_info->content_in_use = TRUE;
574 tui_erase_exec_info_content (struct tui_win_info *win_info)
576 struct tui_gen_win_info *exec_info
577 = win_info->detail.source_info.execution_info;
579 werase (exec_info->handle);
580 tui_refresh_win (exec_info);
584 tui_clear_exec_info_content (struct tui_win_info *win_info)
586 win_info->detail.source_info.execution_info->content_in_use = FALSE;
587 tui_erase_exec_info_content (win_info);
592 /* Function to update the execution info window. */
594 tui_update_exec_info (struct tui_win_info *win_info)
596 tui_set_exec_info_content (win_info);
597 tui_show_exec_info_content (win_info);
601 tui_alloc_source_buffer (struct tui_win_info *win_info)
604 int i, line_width, max_lines;
606 max_lines = win_info->generic.height; /* Less the highlight box. */
607 line_width = win_info->generic.width - 1;
609 * Allocate the buffer for the source lines. Do this only once
610 * since they will be re-used for all source displays. The only
611 * other time this will be done is when a window's size changes.
613 if (win_info->generic.content == NULL)
615 src_line_buf = (char *)
616 xmalloc ((max_lines * line_width) * sizeof (char));
617 if (src_line_buf == (char *) NULL)
619 fputs_unfiltered ("Unable to Allocate Memory for "
620 "Source or Disassembly Display.\n",
624 /* Allocate the content list. */
625 if ((win_info->generic.content =
626 (void **) tui_alloc_content (max_lines, SRC_WIN)) == NULL)
628 xfree (src_line_buf);
629 fputs_unfiltered ("Unable to Allocate Memory for "
630 "Source or Disassembly Display.\n",
634 for (i = 0; i < max_lines; i++)
635 ((struct tui_win_element *)
636 win_info->generic.content[i])->which_element.source.line =
637 src_line_buf + (line_width * i);
644 /* Answer whether the a particular line number or address is displayed
645 in the current source window. */
647 tui_line_is_displayed (int line,
648 struct tui_win_info *win_info,
651 int is_displayed = FALSE;
655 threshold = SCROLL_THRESHOLD;
659 while (i < win_info->generic.content_size - threshold
662 is_displayed = (((struct tui_win_element *)
663 win_info->generic.content[i])->which_element.source.line_or_addr.loa
665 && (((struct tui_win_element *)
666 win_info->generic.content[i])->which_element.source.line_or_addr.u.line_no
675 /* Answer whether the a particular line number or address is displayed
676 in the current source window. */
678 tui_addr_is_displayed (CORE_ADDR addr,
679 struct tui_win_info *win_info,
682 int is_displayed = FALSE;
686 threshold = SCROLL_THRESHOLD;
690 while (i < win_info->generic.content_size - threshold
693 is_displayed = (((struct tui_win_element *)
694 win_info->generic.content[i])->which_element.source.line_or_addr.loa
696 && (((struct tui_win_element *)
697 win_info->generic.content[i])->which_element.source.line_or_addr.u.addr
706 /*****************************************
707 ** STATIC LOCAL FUNCTIONS **
708 ******************************************/