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;
196 werase (handle
.get ());
197 check_and_display_highlight_if_needed ();
199 if (strlen (str
) >= half_width
)
202 x_pos
= half_width
- strlen (str
);
203 mvwaddstr (handle
.get (),
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
.get (), true);
224 wmove (win_info
->handle
.get (), lineno
, TUI_EXECINFO_SIZE
);
225 tui_puts (line
->line
.c_str (), win_info
->handle
.get ());
226 if (line
->is_exec_point
)
227 tui_set_reverse_mode (win_info
->handle
.get (), false);
229 /* Clear to end of line but stop before the border. */
230 x
= getcurx (win_info
->handle
.get ());
231 while (x
+ 1 < win_info
->width
)
233 waddch (win_info
->handle
.get (), ' ');
234 x
= getcurx (win_info
->handle
.get ());
239 tui_source_window_base::show_source_content ()
241 gdb_assert (!content
.empty ());
243 for (int lineno
= 1; lineno
<= content
.size (); lineno
++)
244 tui_show_source_line (this, lineno
);
246 check_and_display_highlight_if_needed ();
250 tui_source_window_base::tui_source_window_base (enum tui_win_type type
)
251 : tui_win_info (type
)
253 gdb_assert (type
== SRC_WIN
|| type
== DISASSEM_WIN
);
254 start_line_or_addr
.loa
= LOA_ADDRESS
;
255 start_line_or_addr
.u
.addr
= 0;
259 /* See tui-data.h. */
262 tui_source_window_base::update_tab_width ()
264 werase (handle
.get ());
269 tui_source_window_base::rerender ()
271 if (!content
.empty ())
273 struct tui_line_or_address line_or_addr
;
274 struct symtab_and_line cursal
275 = get_current_source_symtab_and_line ();
277 line_or_addr
= start_line_or_addr
;
278 update_source_window (gdbarch
, cursal
.symtab
, line_or_addr
);
280 else if (deprecated_safe_get_selected_frame () != NULL
)
282 struct tui_line_or_address line
;
283 struct symtab_and_line cursal
284 = get_current_source_symtab_and_line ();
285 struct frame_info
*frame
= deprecated_safe_get_selected_frame ();
286 struct gdbarch
*gdbarch
= get_frame_arch (frame
);
288 struct symtab
*s
= find_pc_line_symtab (get_frame_pc (frame
));
292 line
.u
.line_no
= cursal
.line
;
296 line
.loa
= LOA_ADDRESS
;
297 find_line_pc (s
, cursal
.line
, &line
.u
.addr
);
299 update_source_window (gdbarch
, s
, line
);
302 erase_source_content ();
305 /* See tui-data.h. */
308 tui_source_window_base::refill ()
314 symtab_and_line cursal
= get_current_source_symtab_and_line ();
315 s
= (cursal
.symtab
== NULL
316 ? find_pc_line_symtab (get_frame_pc (get_selected_frame (NULL
)))
320 update_source_window_as_is (gdbarch
, s
, content
[0].line_or_addr
);
323 /* Scroll the source forward or backward horizontally. */
326 tui_source_window_base::do_scroll_horizontal (int num_to_scroll
)
328 if (!content
.empty ())
330 int offset
= horizontal_offset
+ num_to_scroll
;
333 horizontal_offset
= offset
;
339 /* Set or clear the is_exec_point flag in the line whose line is
343 tui_source_window_base::set_is_exec_point_at (struct tui_line_or_address l
)
345 bool changed
= false;
349 while (i
< content
.size ())
352 struct tui_line_or_address content_loa
=
353 content
[i
].line_or_addr
;
355 gdb_assert (l
.loa
== LOA_ADDRESS
|| l
.loa
== LOA_LINE
);
356 gdb_assert (content_loa
.loa
== LOA_LINE
357 || content_loa
.loa
== LOA_ADDRESS
);
358 if (content_loa
.loa
== l
.loa
359 && ((l
.loa
== LOA_LINE
&& content_loa
.u
.line_no
== l
.u
.line_no
)
360 || (l
.loa
== LOA_ADDRESS
&& content_loa
.u
.addr
== l
.u
.addr
)))
364 if (new_state
!= content
[i
].is_exec_point
)
367 content
[i
].is_exec_point
= new_state
;
368 tui_show_source_line (this, i
+ 1);
376 /* See tui-winsource.h. */
379 tui_update_all_breakpoint_info (struct breakpoint
*being_deleted
)
381 for (tui_source_window_base
*win
: tui_source_windows ())
383 if (win
->update_breakpoint_info (being_deleted
, false))
384 win
->update_exec_info ();
389 /* Scan the source window and the breakpoints to update the break_mode
390 information for each line.
392 Returns true if something changed and the execution window must be
396 tui_source_window_base::update_breakpoint_info
397 (struct breakpoint
*being_deleted
, bool current_only
)
400 bool need_refresh
= false;
402 for (i
= 0; i
< content
.size (); i
++)
404 struct tui_source_element
*line
;
407 if (current_only
&& !line
->is_exec_point
)
410 /* Scan each breakpoint to see if the current line has something to
411 do with it. Identify enable/disabled breakpoints as well as
412 those that we already hit. */
413 tui_bp_flags mode
= 0;
414 iterate_over_breakpoints ([&] (breakpoint
*bp
) -> bool
416 struct bp_location
*loc
;
418 gdb_assert (line
->line_or_addr
.loa
== LOA_LINE
419 || line
->line_or_addr
.loa
== LOA_ADDRESS
);
421 if (bp
== being_deleted
)
424 for (loc
= bp
->loc
; loc
!= NULL
; loc
= loc
->next
)
426 if (location_matches_p (loc
, i
))
428 if (bp
->enable_state
== bp_disabled
)
429 mode
|= TUI_BP_DISABLED
;
431 mode
|= TUI_BP_ENABLED
;
435 mode
|= TUI_BP_CONDITIONAL
;
436 if (bp
->type
== bp_hardware_breakpoint
)
437 mode
|= TUI_BP_HARDWARE
;
442 if (line
->break_mode
!= mode
)
444 line
->break_mode
= mode
;
451 /* Function to initialize the content of the execution info window,
452 based upon the input window which is either the source or
453 disassembly window. */
455 tui_source_window_base::update_exec_info ()
457 update_breakpoint_info (nullptr, true);
458 for (int i
= 0; i
< content
.size (); i
++)
460 struct tui_source_element
*src_element
= &content
[i
];
461 char element
[TUI_EXECINFO_SIZE
] = " ";
463 /* Now update the exec info content based upon the state
464 of each line as indicated by the source content. */
465 tui_bp_flags mode
= src_element
->break_mode
;
466 if (mode
& TUI_BP_HIT
)
467 element
[TUI_BP_HIT_POS
] = (mode
& TUI_BP_HARDWARE
) ? 'H' : 'B';
468 else if (mode
& (TUI_BP_ENABLED
| TUI_BP_DISABLED
))
469 element
[TUI_BP_HIT_POS
] = (mode
& TUI_BP_HARDWARE
) ? 'h' : 'b';
471 if (mode
& TUI_BP_ENABLED
)
472 element
[TUI_BP_BREAK_POS
] = '+';
473 else if (mode
& TUI_BP_DISABLED
)
474 element
[TUI_BP_BREAK_POS
] = '-';
476 if (src_element
->is_exec_point
)
477 element
[TUI_EXEC_POS
] = '>';
479 mvwaddstr (handle
.get (), i
+ 1, 1, element
);