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 if (!tui_source_windows ().empty ())
49 struct gdbarch
*gdbarch
;
52 tui_get_begin_asm_address (&gdbarch
, &addr
);
53 if (addr
!= (CORE_ADDR
) 0)
57 tui_update_source_windows_with_addr (gdbarch
, addr
);
58 s
= find_pc_line_symtab (addr
);
60 tui_update_locator_fullname (symtab_to_fullname (s
));
62 tui_update_locator_fullname ("??");
69 /* Function to display source in the source window. This function
70 initializes the horizontal scroll to 0. */
72 tui_update_source_window (struct tui_source_window_base
*win_info
,
73 struct gdbarch
*gdbarch
,
75 struct tui_line_or_address line_or_addr
,
78 win_info
->horizontal_offset
= 0;
79 tui_update_source_window_as_is (win_info
, gdbarch
, s
, line_or_addr
, noerror
);
83 /* Function to display source in the source/asm window. This function
84 shows the source as specified by the horizontal offset. */
86 tui_update_source_window_as_is (struct tui_source_window_base
*win_info
,
87 struct gdbarch
*gdbarch
,
89 struct tui_line_or_address line_or_addr
,
94 if (win_info
->type
== SRC_WIN
)
95 ret
= tui_set_source_content (win_info
, s
, line_or_addr
.u
.line_no
,
98 ret
= tui_set_disassem_content (win_info
, gdbarch
, line_or_addr
.u
.addr
);
100 if (ret
== TUI_FAILURE
)
102 tui_clear_source_content (win_info
);
103 tui_clear_exec_info_content (win_info
);
107 tui_update_breakpoint_info (win_info
, nullptr, false);
108 win_info
->show_source_content ();
109 win_info
->update_exec_info ();
110 if (win_info
->type
== SRC_WIN
)
114 sal
.line
= line_or_addr
.u
.line_no
+
115 (win_info
->content
.size () - 2);
117 sal
.pspace
= SYMTAB_PSPACE (s
);
118 set_current_source_symtab_and_line (sal
);
119 /* If the focus was in the asm win, put it in the src win if
120 we don't have a split layout. */
121 if (tui_win_with_focus () == TUI_DISASM_WIN
122 && tui_current_layout () != SRC_DISASSEM_COMMAND
)
123 tui_set_win_focus_to (win_info
);
129 /* Function to ensure that the source and/or disassemly windows
130 reflect the input address. */
132 tui_update_source_windows_with_addr (struct gdbarch
*gdbarch
, CORE_ADDR addr
)
136 struct symtab_and_line sal
;
137 struct tui_line_or_address l
;
139 switch (tui_current_layout ())
141 case DISASSEM_COMMAND
:
142 case DISASSEM_DATA_COMMAND
:
143 tui_show_disassem (gdbarch
, addr
);
145 case SRC_DISASSEM_COMMAND
:
146 tui_show_disassem_and_update_source (gdbarch
, addr
);
149 sal
= find_pc_line (addr
, 0);
151 l
.u
.line_no
= sal
.line
;
152 tui_show_symtab_source (TUI_SRC_WIN
, gdbarch
, sal
.symtab
, l
, FALSE
);
158 for (struct tui_source_window_base
*win_info
: tui_source_windows ())
160 tui_clear_source_content (win_info
);
161 tui_clear_exec_info_content (win_info
);
166 /* Function to ensure that the source and/or disassemly windows
167 reflect the input address. */
169 tui_update_source_windows_with_line (struct symtab
*s
, int line
)
171 struct gdbarch
*gdbarch
;
173 struct tui_line_or_address l
;
178 gdbarch
= get_objfile_arch (SYMTAB_OBJFILE (s
));
180 switch (tui_current_layout ())
182 case DISASSEM_COMMAND
:
183 case DISASSEM_DATA_COMMAND
:
184 find_line_pc (s
, line
, &pc
);
185 tui_update_source_windows_with_addr (gdbarch
, pc
);
190 tui_show_symtab_source (TUI_SRC_WIN
, gdbarch
, s
, l
, FALSE
);
191 if (tui_current_layout () == SRC_DISASSEM_COMMAND
)
193 find_line_pc (s
, line
, &pc
);
194 tui_show_disassem (gdbarch
, pc
);
201 tui_clear_source_content (struct tui_source_window_base
*win_info
)
203 if (win_info
!= NULL
)
207 tui_erase_source_content (win_info
);
208 for (i
= 0; i
< win_info
->content
.size (); i
++)
210 struct tui_source_element
*element
= &win_info
->content
[i
];
212 element
->break_mode
= 0;
213 element
->is_exec_point
= false;
220 tui_erase_source_content (struct tui_source_window_base
*win_info
)
223 int half_width
= (win_info
->width
- 2) / 2;
225 if (win_info
->handle
!= NULL
)
227 werase (win_info
->handle
);
228 win_info
->check_and_display_highlight_if_needed ();
230 const char *no_src_str
;
232 if (win_info
->type
== SRC_WIN
)
233 no_src_str
= NO_SRC_STRING
;
235 no_src_str
= NO_DISASSEM_STRING
;
236 if (strlen (no_src_str
) >= half_width
)
239 x_pos
= half_width
- strlen (no_src_str
);
240 mvwaddstr (win_info
->handle
,
241 (win_info
->height
/ 2),
243 (char *) no_src_str
);
245 win_info
->content
.clear ();
246 win_info
->refresh_window ();
251 /* Redraw the complete line of a source or disassembly window. */
253 tui_show_source_line (struct tui_source_window_base
*win_info
, int lineno
)
255 struct tui_source_element
*line
;
258 line
= &win_info
->content
[lineno
- 1];
259 if (line
->is_exec_point
)
260 tui_set_reverse_mode (win_info
->handle
, true);
262 wmove (win_info
->handle
, lineno
, 1);
263 tui_puts (line
->line
,
265 if (line
->is_exec_point
)
266 tui_set_reverse_mode (win_info
->handle
, false);
268 /* Clear to end of line but stop before the border. */
269 x
= getcurx (win_info
->handle
);
270 while (x
+ 1 < win_info
->width
)
272 waddch (win_info
->handle
, ' ');
273 x
= getcurx (win_info
->handle
);
278 tui_source_window_base::show_source_content ()
280 if (!content
.empty ())
284 for (lineno
= 1; lineno
<= content
.size (); lineno
++)
285 tui_show_source_line (this, lineno
);
288 tui_erase_source_content (this);
290 check_and_display_highlight_if_needed ();
294 /* See tui-data.h. */
297 tui_source_window_base::clear_detail ()
300 start_line_or_addr
.loa
= LOA_ADDRESS
;
301 start_line_or_addr
.u
.addr
= 0;
302 horizontal_offset
= 0;
305 tui_source_window_base::tui_source_window_base (enum tui_win_type type
)
306 : tui_win_info (type
),
307 execution_info (new tui_exec_info_window ())
309 gdb_assert (type
== SRC_WIN
|| type
== DISASSEM_WIN
);
310 start_line_or_addr
.loa
= LOA_ADDRESS
;
311 start_line_or_addr
.u
.addr
= 0;
315 tui_source_window_base::~tui_source_window_base ()
318 delete execution_info
;
322 tui_source_window_base::reset (int height
, int width
,
323 int origin_x
, int origin_y
)
325 tui_gen_win_info::reset (height
, width
- 3,
326 origin_x
+ 3, origin_y
);
327 execution_info
->reset (height
, 3, origin_x
, origin_y
);
330 /* See tui-data.h. */
333 tui_source_window_base::refresh_all ()
335 show_source_content ();
336 check_and_display_highlight_if_needed ();
340 /* See tui-data.h. */
343 tui_source_window_base::update_tab_width ()
345 /* We don't really change the height of any windows, but
346 calling these 2 functions causes a complete regeneration
347 and redisplay of the window's contents, which will take
348 the new tab width into account. */
349 make_invisible_and_set_new_height (height
);
350 make_visible_with_new_height ();
353 /* See tui-data.h. */
356 tui_source_window_base::set_new_height (int height
)
358 execution_info
->make_visible (false);
359 execution_info
->height
= height
;
360 execution_info
->origin
.y
= origin
.y
;
362 execution_info
->viewport_height
= height
- 1;
364 execution_info
->viewport_height
= height
;
365 execution_info
->viewport_height
--;
369 tui_locator_window
*gen_win_info
= tui_locator_win_info_ptr ();
370 gen_win_info
->make_visible (false);
371 gen_win_info
->origin
.y
= origin
.y
+ height
;
375 /* See tui-data.h. */
378 tui_source_window_base::do_make_visible_with_new_height ()
380 execution_info
->make_visible (true);
381 if (!content
.empty ())
383 struct tui_line_or_address line_or_addr
;
384 struct symtab_and_line cursal
385 = get_current_source_symtab_and_line ();
387 line_or_addr
= start_line_or_addr
;
388 tui_update_source_window (this, gdbarch
,
389 cursal
.symtab
, line_or_addr
, TRUE
);
391 else if (deprecated_safe_get_selected_frame () != NULL
)
393 struct tui_line_or_address line
;
394 struct symtab_and_line cursal
395 = get_current_source_symtab_and_line ();
396 struct frame_info
*frame
= deprecated_safe_get_selected_frame ();
397 struct gdbarch
*gdbarch
= get_frame_arch (frame
);
399 struct symtab
*s
= find_pc_line_symtab (get_frame_pc (frame
));
403 line
.u
.line_no
= cursal
.line
;
407 line
.loa
= LOA_ADDRESS
;
408 find_line_pc (s
, cursal
.line
, &line
.u
.addr
);
410 tui_update_source_window (this, gdbarch
, s
, line
, TRUE
);
414 tui_locator_win_info_ptr ()->make_visible (true);
415 tui_show_locator_content ();
419 /* See tui-data.h. */
422 tui_source_window_base::make_visible (bool visible
)
424 execution_info
->make_visible (visible
);
425 tui_win_info::make_visible (visible
);
428 /* See tui-data.h. */
431 tui_source_window_base::refresh_window ()
433 execution_info
->refresh_window ();
434 tui_win_info::refresh_window ();
437 /* See tui-data.h. */
440 tui_source_window_base::refill ()
446 symtab_and_line cursal
= get_current_source_symtab_and_line ();
447 s
= (cursal
.symtab
== NULL
448 ? find_pc_line_symtab (get_frame_pc (get_selected_frame (NULL
)))
452 tui_update_source_window_as_is (this, gdbarch
, s
,
453 content
[0].line_or_addr
,
457 /* Scroll the source forward or backward horizontally. */
460 tui_source_window_base::do_scroll_horizontal (int num_to_scroll
)
462 if (!content
.empty ())
464 int offset
= horizontal_offset
+ num_to_scroll
;
467 horizontal_offset
= offset
;
473 /* Set or clear the is_exec_point flag in the line whose line is
477 tui_source_window_base::set_is_exec_point_at (struct tui_line_or_address l
)
479 bool changed
= false;
483 while (i
< content
.size ())
486 struct tui_line_or_address content_loa
=
487 content
[i
].line_or_addr
;
489 gdb_assert (l
.loa
== LOA_ADDRESS
|| l
.loa
== LOA_LINE
);
490 gdb_assert (content_loa
.loa
== LOA_LINE
491 || content_loa
.loa
== LOA_ADDRESS
);
492 if (content_loa
.loa
== l
.loa
493 && ((l
.loa
== LOA_LINE
&& content_loa
.u
.line_no
== l
.u
.line_no
)
494 || (l
.loa
== LOA_ADDRESS
&& content_loa
.u
.addr
== l
.u
.addr
)))
498 if (new_state
!= content
[i
].is_exec_point
)
501 content
[i
].is_exec_point
= new_state
;
502 tui_show_source_line (this, i
+ 1);
510 /* See tui-winsource.h. */
513 tui_update_all_breakpoint_info (struct breakpoint
*being_deleted
)
515 for (tui_source_window_base
*win
: tui_source_windows ())
517 if (tui_update_breakpoint_info (win
, being_deleted
, false))
519 win
->update_exec_info ();
525 /* Scan the source window and the breakpoints to update the break_mode
526 information for each line.
528 Returns true if something changed and the execution window must be
532 tui_update_breakpoint_info (struct tui_source_window_base
*win
,
533 struct breakpoint
*being_deleted
,
537 bool need_refresh
= false;
539 for (i
= 0; i
< win
->content
.size (); i
++)
541 struct breakpoint
*bp
;
542 extern struct breakpoint
*breakpoint_chain
;
543 struct tui_source_element
*line
;
545 line
= &win
->content
[i
];
546 if (current_only
&& !line
->is_exec_point
)
549 /* Scan each breakpoint to see if the current line has something to
550 do with it. Identify enable/disabled breakpoints as well as
551 those that we already hit. */
552 tui_bp_flags mode
= 0;
553 for (bp
= breakpoint_chain
;
557 struct bp_location
*loc
;
559 gdb_assert (line
->line_or_addr
.loa
== LOA_LINE
560 || line
->line_or_addr
.loa
== LOA_ADDRESS
);
562 if (bp
== being_deleted
)
565 for (loc
= bp
->loc
; loc
!= NULL
; loc
= loc
->next
)
567 if (win
->location_matches_p (loc
, i
))
569 if (bp
->enable_state
== bp_disabled
)
570 mode
|= TUI_BP_DISABLED
;
572 mode
|= TUI_BP_ENABLED
;
576 mode
|= TUI_BP_CONDITIONAL
;
577 if (bp
->type
== bp_hardware_breakpoint
)
578 mode
|= TUI_BP_HARDWARE
;
582 if (line
->break_mode
!= mode
)
584 line
->break_mode
= mode
;
591 /* See tui-data.h. */
593 tui_exec_info_content
*
594 tui_exec_info_window::maybe_allocate_content (int n_elements
)
596 if (m_content
== nullptr)
597 m_content
= XNEWVEC (tui_exec_info_content
, n_elements
);
602 /* Function to initialize the content of the execution info window,
603 based upon the input window which is either the source or
604 disassembly window. */
606 tui_source_window_base::set_exec_info_content ()
608 tui_exec_info_content
*exec_content
609 = execution_info
->maybe_allocate_content (height
);
611 tui_update_breakpoint_info (this, nullptr, true);
612 for (int i
= 0; i
< content
.size (); i
++)
614 tui_exec_info_content
&element
= exec_content
[i
];
615 struct tui_source_element
*src_element
;
618 src_element
= &content
[i
];
620 memset (element
, ' ', sizeof (tui_exec_info_content
));
621 element
[TUI_EXECINFO_SIZE
- 1] = 0;
623 /* Now update the exec info content based upon the state
624 of each line as indicated by the source content. */
625 mode
= src_element
->break_mode
;
626 if (mode
& TUI_BP_HIT
)
627 element
[TUI_BP_HIT_POS
] = (mode
& TUI_BP_HARDWARE
) ? 'H' : 'B';
628 else if (mode
& (TUI_BP_ENABLED
| TUI_BP_DISABLED
))
629 element
[TUI_BP_HIT_POS
] = (mode
& TUI_BP_HARDWARE
) ? 'h' : 'b';
631 if (mode
& TUI_BP_ENABLED
)
632 element
[TUI_BP_BREAK_POS
] = '+';
633 else if (mode
& TUI_BP_DISABLED
)
634 element
[TUI_BP_BREAK_POS
] = '-';
636 if (src_element
->is_exec_point
)
637 element
[TUI_EXEC_POS
] = '>';
643 tui_source_window_base::show_exec_info_content ()
645 struct tui_exec_info_window
*exec_info
= execution_info
;
646 const tui_exec_info_content
*exec_content
= exec_info
->get_content ();
648 werase (exec_info
->handle
);
649 for (int cur_line
= 1; cur_line
<= content
.size (); cur_line
++)
650 mvwaddstr (exec_info
->handle
,
653 exec_content
[cur_line
- 1]);
654 exec_info
->refresh_window ();
659 tui_clear_exec_info_content (struct tui_source_window_base
*win_info
)
661 struct tui_gen_win_info
*exec_info
= win_info
->execution_info
;
663 werase (exec_info
->handle
);
664 exec_info
->refresh_window ();
667 /* Function to update the execution info window. */
669 tui_source_window_base::update_exec_info ()
671 set_exec_info_content ();
672 show_exec_info_content ();
676 tui_alloc_source_buffer (struct tui_source_window_base
*win_info
)
678 int i
, line_width
, max_lines
;
680 /* The window width/height includes the highlight box. Determine actual
681 content dimensions, including string null-terminators. */
682 max_lines
= win_info
->height
- 2;
683 line_width
= win_info
->width
- 2 + 1;
685 /* Allocate the buffer for the source lines. */
686 win_info
->content
.resize (max_lines
);
687 for (i
= 0; i
< max_lines
; i
++)
689 if (win_info
->content
[i
].line
== nullptr)
690 win_info
->content
[i
].line
= (char *) xmalloc (line_width
);
695 /* Answer whether a particular line number or address is displayed
696 in the current source window. */
698 tui_line_is_displayed (int line
,
699 struct tui_source_window_base
*win_info
,
702 int is_displayed
= FALSE
;
706 threshold
= SCROLL_THRESHOLD
;
710 while (i
< win_info
->content
.size () - threshold
714 = win_info
->content
[i
].line_or_addr
.loa
== LOA_LINE
715 && win_info
->content
[i
].line_or_addr
.u
.line_no
== line
;
723 /* Answer whether a particular line number or address is displayed
724 in the current source window. */
726 tui_addr_is_displayed (CORE_ADDR addr
,
727 struct tui_source_window_base
*win_info
,
730 int is_displayed
= FALSE
;
734 threshold
= SCROLL_THRESHOLD
;
738 while (i
< win_info
->content
.size () - threshold
742 = win_info
->content
[i
].line_or_addr
.loa
== LOA_ADDRESS
743 && win_info
->content
[i
].line_or_addr
.u
.addr
== addr
;