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_SRC_WIN->show_symtab_source (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_SRC_WIN->show_symtab_source (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);
213 /* Redraw the complete line of a source or disassembly window. */
215 tui_show_source_line (struct tui_source_window_base *win_info, int lineno)
217 struct tui_source_element *line;
220 line = &win_info->content[lineno - 1];
221 if (line->is_exec_point)
222 tui_set_reverse_mode (win_info->handle, true);
224 wmove (win_info->handle, lineno, TUI_EXECINFO_SIZE);
225 tui_puts (line->line,
227 if (line->is_exec_point)
228 tui_set_reverse_mode (win_info->handle, false);
230 /* Clear to end of line but stop before the border. */
231 x = getcurx (win_info->handle);
232 while (x + 1 < win_info->width)
234 waddch (win_info->handle, ' ');
235 x = getcurx (win_info->handle);
240 tui_source_window_base::show_source_content ()
242 if (!content.empty ())
246 for (lineno = 1; lineno <= content.size (); lineno++)
247 tui_show_source_line (this, lineno);
250 erase_source_content ();
252 check_and_display_highlight_if_needed ();
256 /* See tui-data.h. */
259 tui_source_window_base::clear_detail ()
262 start_line_or_addr.loa = LOA_ADDRESS;
263 start_line_or_addr.u.addr = 0;
264 horizontal_offset = 0;
267 tui_source_window_base::tui_source_window_base (enum tui_win_type type)
268 : tui_win_info (type)
270 gdb_assert (type == SRC_WIN || type == DISASSEM_WIN);
271 start_line_or_addr.loa = LOA_ADDRESS;
272 start_line_or_addr.u.addr = 0;
276 tui_source_window_base::~tui_source_window_base ()
281 /* See tui-data.h. */
284 tui_source_window_base::update_tab_width ()
291 tui_source_window_base::rerender ()
293 if (!content.empty ())
295 struct tui_line_or_address line_or_addr;
296 struct symtab_and_line cursal
297 = get_current_source_symtab_and_line ();
299 line_or_addr = start_line_or_addr;
300 update_source_window (gdbarch, cursal.symtab, line_or_addr);
302 else if (deprecated_safe_get_selected_frame () != NULL)
304 struct tui_line_or_address line;
305 struct symtab_and_line cursal
306 = get_current_source_symtab_and_line ();
307 struct frame_info *frame = deprecated_safe_get_selected_frame ();
308 struct gdbarch *gdbarch = get_frame_arch (frame);
310 struct symtab *s = find_pc_line_symtab (get_frame_pc (frame));
314 line.u.line_no = cursal.line;
318 line.loa = LOA_ADDRESS;
319 find_line_pc (s, cursal.line, &line.u.addr);
321 update_source_window (gdbarch, s, line);
324 erase_source_content ();
327 /* See tui-data.h. */
330 tui_source_window_base::refill ()
336 symtab_and_line cursal = get_current_source_symtab_and_line ();
337 s = (cursal.symtab == NULL
338 ? find_pc_line_symtab (get_frame_pc (get_selected_frame (NULL)))
342 update_source_window_as_is (gdbarch, s, content[0].line_or_addr);
345 /* Scroll the source forward or backward horizontally. */
348 tui_source_window_base::do_scroll_horizontal (int num_to_scroll)
350 if (!content.empty ())
352 int offset = horizontal_offset + num_to_scroll;
355 horizontal_offset = offset;
361 /* Set or clear the is_exec_point flag in the line whose line is
365 tui_source_window_base::set_is_exec_point_at (struct tui_line_or_address l)
367 bool changed = false;
371 while (i < content.size ())
374 struct tui_line_or_address content_loa =
375 content[i].line_or_addr;
377 gdb_assert (l.loa == LOA_ADDRESS || l.loa == LOA_LINE);
378 gdb_assert (content_loa.loa == LOA_LINE
379 || content_loa.loa == LOA_ADDRESS);
380 if (content_loa.loa == l.loa
381 && ((l.loa == LOA_LINE && content_loa.u.line_no == l.u.line_no)
382 || (l.loa == LOA_ADDRESS && content_loa.u.addr == l.u.addr)))
386 if (new_state != content[i].is_exec_point)
389 content[i].is_exec_point = new_state;
390 tui_show_source_line (this, i + 1);
398 /* See tui-winsource.h. */
401 tui_update_all_breakpoint_info (struct breakpoint *being_deleted)
403 for (tui_source_window_base *win : tui_source_windows ())
405 if (win->update_breakpoint_info (being_deleted, false))
406 win->update_exec_info ();
411 /* Scan the source window and the breakpoints to update the break_mode
412 information for each line.
414 Returns true if something changed and the execution window must be
418 tui_source_window_base::update_breakpoint_info
419 (struct breakpoint *being_deleted, bool current_only)
422 bool need_refresh = false;
424 for (i = 0; i < content.size (); i++)
426 struct breakpoint *bp;
427 extern struct breakpoint *breakpoint_chain;
428 struct tui_source_element *line;
431 if (current_only && !line->is_exec_point)
434 /* Scan each breakpoint to see if the current line has something to
435 do with it. Identify enable/disabled breakpoints as well as
436 those that we already hit. */
437 tui_bp_flags mode = 0;
438 for (bp = breakpoint_chain;
442 struct bp_location *loc;
444 gdb_assert (line->line_or_addr.loa == LOA_LINE
445 || line->line_or_addr.loa == LOA_ADDRESS);
447 if (bp == being_deleted)
450 for (loc = bp->loc; loc != NULL; loc = loc->next)
452 if (location_matches_p (loc, i))
454 if (bp->enable_state == bp_disabled)
455 mode |= TUI_BP_DISABLED;
457 mode |= TUI_BP_ENABLED;
461 mode |= TUI_BP_CONDITIONAL;
462 if (bp->type == bp_hardware_breakpoint)
463 mode |= TUI_BP_HARDWARE;
467 if (line->break_mode != mode)
469 line->break_mode = mode;
476 /* Function to initialize the content of the execution info window,
477 based upon the input window which is either the source or
478 disassembly window. */
480 tui_source_window_base::update_exec_info ()
482 update_breakpoint_info (nullptr, true);
483 for (int i = 0; i < content.size (); i++)
485 struct tui_source_element *src_element = &content[i];
486 char element[TUI_EXECINFO_SIZE] = " ";
488 /* Now update the exec info content based upon the state
489 of each line as indicated by the source content. */
490 tui_bp_flags mode = src_element->break_mode;
491 if (mode & TUI_BP_HIT)
492 element[TUI_BP_HIT_POS] = (mode & TUI_BP_HARDWARE) ? 'H' : 'B';
493 else if (mode & (TUI_BP_ENABLED | TUI_BP_DISABLED))
494 element[TUI_BP_HIT_POS] = (mode & TUI_BP_HARDWARE) ? 'h' : 'b';
496 if (mode & TUI_BP_ENABLED)
497 element[TUI_BP_BREAK_POS] = '+';
498 else if (mode & TUI_BP_DISABLED)
499 element[TUI_BP_BREAK_POS] = '-';
501 if (src_element->is_exec_point)
502 element[TUI_EXEC_POS] = '>';
504 mvwaddstr (handle, i + 1, 1, element);