1 /* TUI display source/assembly window.
3 Copyright (C) 1998-2019 Free Software Foundation, Inc.
5 Contributed by Hewlett-Packard Company.
7 This file is part of GDB.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>. */
26 #include "breakpoint.h"
30 #include "filenames.h"
33 #include "tui/tui-data.h"
34 #include "tui/tui-io.h"
35 #include "tui/tui-stack.h"
36 #include "tui/tui-win.h"
37 #include "tui/tui-wingeneral.h"
38 #include "tui/tui-winsource.h"
39 #include "tui/tui-source.h"
40 #include "tui/tui-disasm.h"
41 #include "gdb_curses.h"
43 /* Function to display the "main" routine. */
47 auto adapter = tui_source_windows ();
48 if (adapter.begin () != adapter.end ())
50 struct gdbarch *gdbarch;
53 tui_get_begin_asm_address (&gdbarch, &addr);
54 if (addr != (CORE_ADDR) 0)
58 tui_update_source_windows_with_addr (gdbarch, addr);
59 s = find_pc_line_symtab (addr);
61 tui_update_locator_fullname (symtab_to_fullname (s));
63 tui_update_locator_fullname ("??");
70 /* Function to display source in the source window. This function
71 initializes the horizontal scroll to 0. */
73 tui_source_window_base::update_source_window
74 (struct gdbarch *gdbarch,
76 struct tui_line_or_address line_or_addr)
78 horizontal_offset = 0;
79 update_source_window_as_is (gdbarch, s, line_or_addr);
83 /* Function to display source in the source/asm window. This function
84 shows the source as specified by the horizontal offset. */
86 tui_source_window_base::update_source_window_as_is
87 (struct gdbarch *gdbarch,
89 struct tui_line_or_address line_or_addr)
92 = set_contents (gdbarch, s, line_or_addr);
94 if (ret == TUI_FAILURE)
95 erase_source_content ();
98 update_breakpoint_info (nullptr, false);
99 show_source_content ();
105 sal.line = line_or_addr.u.line_no + (content.size () - 2);
107 sal.pspace = SYMTAB_PSPACE (s);
108 set_current_source_symtab_and_line (sal);
109 /* If the focus was in the asm win, put it in the src win if
110 we don't have a split layout. */
111 if (tui_win_with_focus () == TUI_DISASM_WIN
112 && tui_current_layout () != SRC_DISASSEM_COMMAND)
113 tui_set_win_focus_to (this);
119 /* Function to ensure that the source and/or disassemly windows
120 reflect the input address. */
122 tui_update_source_windows_with_addr (struct gdbarch *gdbarch, CORE_ADDR addr)
126 struct symtab_and_line sal;
127 struct tui_line_or_address l;
129 switch (tui_current_layout ())
131 case DISASSEM_COMMAND:
132 case DISASSEM_DATA_COMMAND:
133 tui_show_disassem (gdbarch, addr);
135 case SRC_DISASSEM_COMMAND:
136 tui_show_disassem_and_update_source (gdbarch, addr);
139 sal = find_pc_line (addr, 0);
141 l.u.line_no = sal.line;
142 tui_show_symtab_source (TUI_SRC_WIN, gdbarch, sal.symtab, l);
148 for (struct tui_source_window_base *win_info : tui_source_windows ())
149 win_info->erase_source_content ();
153 /* Function to ensure that the source and/or disassemly windows
154 reflect the input address. */
156 tui_update_source_windows_with_line (struct symtab *s, int line)
158 struct gdbarch *gdbarch;
160 struct tui_line_or_address l;
165 gdbarch = get_objfile_arch (SYMTAB_OBJFILE (s));
167 switch (tui_current_layout ())
169 case DISASSEM_COMMAND:
170 case DISASSEM_DATA_COMMAND:
171 find_line_pc (s, line, &pc);
172 tui_update_source_windows_with_addr (gdbarch, pc);
177 tui_show_symtab_source (TUI_SRC_WIN, gdbarch, s, l);
178 if (tui_current_layout () == SRC_DISASSEM_COMMAND)
180 find_line_pc (s, line, &pc);
181 tui_show_disassem (gdbarch, pc);
188 tui_source_window_base::do_erase_source_content (const char *str)
191 int half_width = (width - 2) / 2;
197 check_and_display_highlight_if_needed ();
199 if (strlen (str) >= half_width)
202 x_pos = half_width - strlen (str);
210 werase (execution_info->handle);
211 execution_info->refresh_window ();
216 /* Redraw the complete line of a source or disassembly window. */
218 tui_show_source_line (struct tui_source_window_base *win_info, int lineno)
220 struct tui_source_element *line;
223 line = &win_info->content[lineno - 1];
224 if (line->is_exec_point)
225 tui_set_reverse_mode (win_info->handle, true);
227 wmove (win_info->handle, lineno, 1);
228 tui_puts (line->line,
230 if (line->is_exec_point)
231 tui_set_reverse_mode (win_info->handle, false);
233 /* Clear to end of line but stop before the border. */
234 x = getcurx (win_info->handle);
235 while (x + 1 < win_info->width)
237 waddch (win_info->handle, ' ');
238 x = getcurx (win_info->handle);
243 tui_source_window_base::show_source_content ()
245 if (!content.empty ())
249 for (lineno = 1; lineno <= content.size (); lineno++)
250 tui_show_source_line (this, lineno);
253 erase_source_content ();
255 check_and_display_highlight_if_needed ();
259 /* See tui-data.h. */
262 tui_source_window_base::clear_detail ()
265 start_line_or_addr.loa = LOA_ADDRESS;
266 start_line_or_addr.u.addr = 0;
267 horizontal_offset = 0;
270 tui_source_window_base::tui_source_window_base (enum tui_win_type type)
271 : tui_win_info (type),
272 execution_info (new tui_exec_info_window ())
274 gdb_assert (type == SRC_WIN || type == DISASSEM_WIN);
275 start_line_or_addr.loa = LOA_ADDRESS;
276 start_line_or_addr.u.addr = 0;
280 tui_source_window_base::~tui_source_window_base ()
283 delete execution_info;
287 tui_source_window_base::resize (int height, int width,
288 int origin_x, int origin_y)
290 tui_gen_win_info::resize (height, width - 3,
291 origin_x + 3, origin_y);
292 execution_info->resize (height, 3, origin_x, origin_y);
295 /* See tui-data.h. */
298 tui_source_window_base::refresh_all ()
300 show_source_content ();
301 check_and_display_highlight_if_needed ();
305 /* See tui-data.h. */
308 tui_source_window_base::update_tab_width ()
315 tui_source_window_base::rerender ()
317 if (!content.empty ())
319 struct tui_line_or_address line_or_addr;
320 struct symtab_and_line cursal
321 = get_current_source_symtab_and_line ();
323 line_or_addr = start_line_or_addr;
324 update_source_window (gdbarch, cursal.symtab, line_or_addr);
326 else if (deprecated_safe_get_selected_frame () != NULL)
328 struct tui_line_or_address line;
329 struct symtab_and_line cursal
330 = get_current_source_symtab_and_line ();
331 struct frame_info *frame = deprecated_safe_get_selected_frame ();
332 struct gdbarch *gdbarch = get_frame_arch (frame);
334 struct symtab *s = find_pc_line_symtab (get_frame_pc (frame));
338 line.u.line_no = cursal.line;
342 line.loa = LOA_ADDRESS;
343 find_line_pc (s, cursal.line, &line.u.addr);
345 update_source_window (gdbarch, s, line);
348 erase_source_content ();
351 /* See tui-data.h. */
354 tui_source_window_base::make_visible (bool visible)
356 execution_info->make_visible (visible);
357 tui_win_info::make_visible (visible);
360 /* See tui-data.h. */
363 tui_source_window_base::refresh_window ()
365 execution_info->refresh_window ();
366 tui_win_info::refresh_window ();
369 /* See tui-data.h. */
372 tui_source_window_base::refill ()
378 symtab_and_line cursal = get_current_source_symtab_and_line ();
379 s = (cursal.symtab == NULL
380 ? find_pc_line_symtab (get_frame_pc (get_selected_frame (NULL)))
384 update_source_window_as_is (gdbarch, s, content[0].line_or_addr);
387 /* Scroll the source forward or backward horizontally. */
390 tui_source_window_base::do_scroll_horizontal (int num_to_scroll)
392 if (!content.empty ())
394 int offset = horizontal_offset + num_to_scroll;
397 horizontal_offset = offset;
403 /* Set or clear the is_exec_point flag in the line whose line is
407 tui_source_window_base::set_is_exec_point_at (struct tui_line_or_address l)
409 bool changed = false;
413 while (i < content.size ())
416 struct tui_line_or_address content_loa =
417 content[i].line_or_addr;
419 gdb_assert (l.loa == LOA_ADDRESS || l.loa == LOA_LINE);
420 gdb_assert (content_loa.loa == LOA_LINE
421 || content_loa.loa == LOA_ADDRESS);
422 if (content_loa.loa == l.loa
423 && ((l.loa == LOA_LINE && content_loa.u.line_no == l.u.line_no)
424 || (l.loa == LOA_ADDRESS && content_loa.u.addr == l.u.addr)))
428 if (new_state != content[i].is_exec_point)
431 content[i].is_exec_point = new_state;
432 tui_show_source_line (this, i + 1);
440 /* See tui-winsource.h. */
443 tui_update_all_breakpoint_info (struct breakpoint *being_deleted)
445 for (tui_source_window_base *win : tui_source_windows ())
447 if (win->update_breakpoint_info (being_deleted, false))
448 win->update_exec_info ();
453 /* Scan the source window and the breakpoints to update the break_mode
454 information for each line.
456 Returns true if something changed and the execution window must be
460 tui_source_window_base::update_breakpoint_info
461 (struct breakpoint *being_deleted, bool current_only)
464 bool need_refresh = false;
466 for (i = 0; i < content.size (); i++)
468 struct breakpoint *bp;
469 extern struct breakpoint *breakpoint_chain;
470 struct tui_source_element *line;
473 if (current_only && !line->is_exec_point)
476 /* Scan each breakpoint to see if the current line has something to
477 do with it. Identify enable/disabled breakpoints as well as
478 those that we already hit. */
479 tui_bp_flags mode = 0;
480 for (bp = breakpoint_chain;
484 struct bp_location *loc;
486 gdb_assert (line->line_or_addr.loa == LOA_LINE
487 || line->line_or_addr.loa == LOA_ADDRESS);
489 if (bp == being_deleted)
492 for (loc = bp->loc; loc != NULL; loc = loc->next)
494 if (location_matches_p (loc, i))
496 if (bp->enable_state == bp_disabled)
497 mode |= TUI_BP_DISABLED;
499 mode |= TUI_BP_ENABLED;
503 mode |= TUI_BP_CONDITIONAL;
504 if (bp->type == bp_hardware_breakpoint)
505 mode |= TUI_BP_HARDWARE;
509 if (line->break_mode != mode)
511 line->break_mode = mode;
518 /* Function to initialize the content of the execution info window,
519 based upon the input window which is either the source or
520 disassembly window. */
522 tui_source_window_base::update_exec_info ()
524 werase (execution_info->handle);
525 update_breakpoint_info (nullptr, true);
526 for (int i = 0; i < content.size (); i++)
528 struct tui_source_element *src_element = &content[i];
529 char element[TUI_EXECINFO_SIZE] = " ";
531 /* Now update the exec info content based upon the state
532 of each line as indicated by the source content. */
533 tui_bp_flags mode = src_element->break_mode;
534 if (mode & TUI_BP_HIT)
535 element[TUI_BP_HIT_POS] = (mode & TUI_BP_HARDWARE) ? 'H' : 'B';
536 else if (mode & (TUI_BP_ENABLED | TUI_BP_DISABLED))
537 element[TUI_BP_HIT_POS] = (mode & TUI_BP_HARDWARE) ? 'h' : 'b';
539 if (mode & TUI_BP_ENABLED)
540 element[TUI_BP_BREAK_POS] = '+';
541 else if (mode & TUI_BP_DISABLED)
542 element[TUI_BP_BREAK_POS] = '-';
544 if (src_element->is_exec_point)
545 element[TUI_EXEC_POS] = '>';
547 mvwaddstr (execution_info->handle, i + 1, 0, element);
549 execution_info->refresh_window ();