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
);
85 /* Function to display source in the source/asm window. This function
86 shows the source as specified by the horizontal offset. */
88 tui_update_source_window_as_is (struct tui_source_window_base
*win_info
,
89 struct gdbarch
*gdbarch
,
91 struct tui_line_or_address line_or_addr
,
96 if (win_info
->type
== SRC_WIN
)
97 ret
= tui_set_source_content (win_info
, s
, line_or_addr
.u
.line_no
,
100 ret
= tui_set_disassem_content (gdbarch
, line_or_addr
.u
.addr
);
102 if (ret
== TUI_FAILURE
)
104 tui_clear_source_content (win_info
, EMPTY_SOURCE_PROMPT
);
105 tui_clear_exec_info_content (win_info
);
109 tui_update_breakpoint_info (win_info
, nullptr, false);
110 tui_show_source_content (win_info
);
111 tui_update_exec_info (win_info
);
112 if (win_info
->type
== SRC_WIN
)
116 sal
.line
= line_or_addr
.u
.line_no
+
117 (win_info
->content
.size () - 2);
119 sal
.pspace
= SYMTAB_PSPACE (s
);
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 (win_info
);
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 (TUI_SRC_WIN
, gdbarch
, sal
.symtab
, l
, FALSE
);
163 for (struct tui_source_window_base
*win_info
: tui_source_windows ())
165 tui_clear_source_content (win_info
, EMPTY_SOURCE_PROMPT
);
166 tui_clear_exec_info_content (win_info
);
171 /* Function to ensure that the source and/or disassemly windows
172 reflect the input address. */
174 tui_update_source_windows_with_line (struct symtab
*s
, int line
)
176 struct gdbarch
*gdbarch
;
178 struct tui_line_or_address l
;
183 gdbarch
= get_objfile_arch (SYMTAB_OBJFILE (s
));
185 switch (tui_current_layout ())
187 case DISASSEM_COMMAND
:
188 case DISASSEM_DATA_COMMAND
:
189 find_line_pc (s
, line
, &pc
);
190 tui_update_source_windows_with_addr (gdbarch
, pc
);
195 tui_show_symtab_source (TUI_SRC_WIN
, gdbarch
, s
, l
, FALSE
);
196 if (tui_current_layout () == SRC_DISASSEM_COMMAND
)
198 find_line_pc (s
, line
, &pc
);
199 tui_show_disassem (gdbarch
, pc
);
208 tui_clear_source_content (struct tui_source_window_base
*win_info
,
211 if (win_info
!= NULL
)
215 win_info
->content_in_use
= false;
216 tui_erase_source_content (win_info
, display_prompt
);
217 for (i
= 0; i
< win_info
->content
.size (); i
++)
219 struct tui_source_element
*element
= &win_info
->content
[i
];
221 element
->break_mode
= 0;
222 element
->is_exec_point
= false;
229 tui_erase_source_content (struct tui_source_window_base
*win_info
,
233 int half_width
= (win_info
->width
- 2) / 2;
235 if (win_info
->handle
!= NULL
)
237 werase (win_info
->handle
);
238 tui_check_and_display_highlight_if_needed (win_info
);
239 if (display_prompt
== EMPTY_SOURCE_PROMPT
)
241 const char *no_src_str
;
243 if (win_info
->type
== SRC_WIN
)
244 no_src_str
= NO_SRC_STRING
;
246 no_src_str
= NO_DISASSEM_STRING
;
247 if (strlen (no_src_str
) >= half_width
)
250 x_pos
= half_width
- strlen (no_src_str
);
251 mvwaddstr (win_info
->handle
,
252 (win_info
->height
/ 2),
254 (char *) no_src_str
);
256 /* elz: Added this function call to set the real contents of
257 the window to what is on the screen, so that later calls
258 to refresh, do display the correct stuff, and not the old
261 tui_set_source_content_nil (win_info
, no_src_str
);
263 win_info
->refresh_window ();
268 /* Redraw the complete line of a source or disassembly window. */
270 tui_show_source_line (struct tui_source_window_base
*win_info
, int lineno
)
272 struct tui_source_element
*line
;
275 line
= &win_info
->content
[lineno
- 1];
276 if (line
->is_exec_point
)
277 tui_set_reverse_mode (win_info
->handle
, true);
279 wmove (win_info
->handle
, lineno
, 1);
280 tui_puts (line
->line
,
282 if (line
->is_exec_point
)
283 tui_set_reverse_mode (win_info
->handle
, false);
285 /* Clear to end of line but stop before the border. */
286 x
= getcurx (win_info
->handle
);
287 while (x
+ 1 < win_info
->width
)
289 waddch (win_info
->handle
, ' ');
290 x
= getcurx (win_info
->handle
);
295 tui_show_source_content (struct tui_source_window_base
*win_info
)
297 if (!win_info
->content
.empty ())
301 for (lineno
= 1; lineno
<= win_info
->content
.size (); lineno
++)
302 tui_show_source_line (win_info
, lineno
);
305 tui_erase_source_content (win_info
, TRUE
);
307 tui_check_and_display_highlight_if_needed (win_info
);
308 win_info
->refresh_window ();
309 win_info
->content_in_use
= true;
312 /* See tui-data.h. */
315 tui_source_window_base::refill ()
321 symtab_and_line cursal
= get_current_source_symtab_and_line ();
322 s
= (cursal
.symtab
== NULL
323 ? find_pc_line_symtab (get_frame_pc (get_selected_frame (NULL
)))
327 tui_update_source_window_as_is (this, gdbarch
, s
,
328 content
[0].line_or_addr
,
332 /* Scroll the source forward or backward horizontally. */
335 tui_source_window_base::do_scroll_horizontal (int num_to_scroll
)
337 if (!content
.empty ())
339 int offset
= horizontal_offset
+ num_to_scroll
;
342 horizontal_offset
= offset
;
348 /* Set or clear the is_exec_point flag in the line whose line is
352 tui_source_window_base::set_is_exec_point_at (struct tui_line_or_address l
)
354 bool changed
= false;
358 while (i
< content
.size ())
361 struct tui_line_or_address content_loa
=
362 content
[i
].line_or_addr
;
364 gdb_assert (l
.loa
== LOA_ADDRESS
|| l
.loa
== LOA_LINE
);
365 gdb_assert (content_loa
.loa
== LOA_LINE
366 || content_loa
.loa
== LOA_ADDRESS
);
367 if (content_loa
.loa
== l
.loa
368 && ((l
.loa
== LOA_LINE
&& content_loa
.u
.line_no
== l
.u
.line_no
)
369 || (l
.loa
== LOA_ADDRESS
&& content_loa
.u
.addr
== l
.u
.addr
)))
373 if (new_state
!= content
[i
].is_exec_point
)
376 content
[i
].is_exec_point
= new_state
;
377 tui_show_source_line (this, i
+ 1);
385 /* See tui-winsource.h. */
388 tui_update_all_breakpoint_info (struct breakpoint
*being_deleted
)
390 for (tui_source_window_base
*win
: tui_source_windows ())
392 if (tui_update_breakpoint_info (win
, being_deleted
, false))
394 tui_update_exec_info (win
);
400 /* Scan the source window and the breakpoints to update the break_mode
401 information for each line.
403 Returns true if something changed and the execution window must be
407 tui_update_breakpoint_info (struct tui_source_window_base
*win
,
408 struct breakpoint
*being_deleted
,
412 bool need_refresh
= false;
414 for (i
= 0; i
< win
->content
.size (); i
++)
416 struct breakpoint
*bp
;
417 extern struct breakpoint
*breakpoint_chain
;
418 struct tui_source_element
*line
;
420 line
= &win
->content
[i
];
421 if (current_only
&& !line
->is_exec_point
)
424 /* Scan each breakpoint to see if the current line has something to
425 do with it. Identify enable/disabled breakpoints as well as
426 those that we already hit. */
427 tui_bp_flags mode
= 0;
428 for (bp
= breakpoint_chain
;
432 struct bp_location
*loc
;
434 gdb_assert (line
->line_or_addr
.loa
== LOA_LINE
435 || line
->line_or_addr
.loa
== LOA_ADDRESS
);
437 if (bp
== being_deleted
)
440 for (loc
= bp
->loc
; loc
!= NULL
; loc
= loc
->next
)
442 if (win
->location_matches_p (loc
, i
))
444 if (bp
->enable_state
== bp_disabled
)
445 mode
|= TUI_BP_DISABLED
;
447 mode
|= TUI_BP_ENABLED
;
451 mode
|= TUI_BP_CONDITIONAL
;
452 if (bp
->type
== bp_hardware_breakpoint
)
453 mode
|= TUI_BP_HARDWARE
;
457 if (line
->break_mode
!= mode
)
459 line
->break_mode
= mode
;
466 /* See tui-data.h. */
468 tui_exec_info_content
*
469 tui_exec_info_window::maybe_allocate_content (int n_elements
)
471 if (m_content
== nullptr)
472 m_content
= XNEWVEC (tui_exec_info_content
, n_elements
);
477 /* Function to initialize the content of the execution info window,
478 based upon the input window which is either the source or
479 disassembly window. */
481 tui_set_exec_info_content (struct tui_source_window_base
*win_info
)
483 if (win_info
->execution_info
!= NULL
)
485 tui_exec_info_content
*content
486 = win_info
->execution_info
->maybe_allocate_content (win_info
->height
);
488 tui_update_breakpoint_info (win_info
, nullptr, true);
489 for (int i
= 0; i
< win_info
->content
.size (); i
++)
491 tui_exec_info_content
&element
= content
[i
];
492 struct tui_source_element
*src_element
;
495 src_element
= &win_info
->content
[i
];
497 memset (element
, ' ', sizeof (tui_exec_info_content
));
498 element
[TUI_EXECINFO_SIZE
- 1] = 0;
500 /* Now update the exec info content based upon the state
501 of each line as indicated by the source content. */
502 mode
= src_element
->break_mode
;
503 if (mode
& TUI_BP_HIT
)
504 element
[TUI_BP_HIT_POS
] = (mode
& TUI_BP_HARDWARE
) ? 'H' : 'B';
505 else if (mode
& (TUI_BP_ENABLED
| TUI_BP_DISABLED
))
506 element
[TUI_BP_HIT_POS
] = (mode
& TUI_BP_HARDWARE
) ? 'h' : 'b';
508 if (mode
& TUI_BP_ENABLED
)
509 element
[TUI_BP_BREAK_POS
] = '+';
510 else if (mode
& TUI_BP_DISABLED
)
511 element
[TUI_BP_BREAK_POS
] = '-';
513 if (src_element
->is_exec_point
)
514 element
[TUI_EXEC_POS
] = '>';
521 tui_show_exec_info_content (struct tui_source_window_base
*win_info
)
523 struct tui_exec_info_window
*exec_info
= win_info
->execution_info
;
524 const tui_exec_info_content
*content
= exec_info
->get_content ();
526 werase (exec_info
->handle
);
527 exec_info
->refresh_window ();
528 for (int cur_line
= 1; cur_line
<= win_info
->content
.size (); cur_line
++)
529 mvwaddstr (exec_info
->handle
,
532 content
[cur_line
- 1]);
533 exec_info
->refresh_window ();
538 tui_erase_exec_info_content (struct tui_source_window_base
*win_info
)
540 struct tui_gen_win_info
*exec_info
= win_info
->execution_info
;
542 werase (exec_info
->handle
);
543 exec_info
->refresh_window ();
547 tui_clear_exec_info_content (struct tui_source_window_base
*win_info
)
549 tui_erase_exec_info_content (win_info
);
552 /* Function to update the execution info window. */
554 tui_update_exec_info (struct tui_source_window_base
*win_info
)
556 tui_set_exec_info_content (win_info
);
557 tui_show_exec_info_content (win_info
);
561 tui_alloc_source_buffer (struct tui_source_window_base
*win_info
)
563 int i
, line_width
, max_lines
;
565 /* The window width/height includes the highlight box. Determine actual
566 content dimensions, including string null-terminators. */
567 max_lines
= win_info
->height
- 2;
568 line_width
= win_info
->width
- 2 + 1;
570 /* Allocate the buffer for the source lines. */
571 win_info
->content
.resize (max_lines
);
572 for (i
= 0; i
< max_lines
; i
++)
574 if (win_info
->content
[i
].line
== nullptr)
575 win_info
->content
[i
].line
= (char *) xmalloc (line_width
);
580 /* Answer whether a particular line number or address is displayed
581 in the current source window. */
583 tui_line_is_displayed (int line
,
584 struct tui_source_window_base
*win_info
,
587 int is_displayed
= FALSE
;
591 threshold
= SCROLL_THRESHOLD
;
595 while (i
< win_info
->content
.size () - threshold
599 = win_info
->content
[i
].line_or_addr
.loa
== LOA_LINE
600 && win_info
->content
[i
].line_or_addr
.u
.line_no
== line
;
608 /* Answer whether a particular line number or address is displayed
609 in the current source window. */
611 tui_addr_is_displayed (CORE_ADDR addr
,
612 struct tui_source_window_base
*win_info
,
615 int is_displayed
= FALSE
;
619 threshold
= SCROLL_THRESHOLD
;
623 while (i
< win_info
->content
.size () - threshold
627 = win_info
->content
[i
].line_or_addr
.loa
== LOA_ADDRESS
628 && win_info
->content
[i
].line_or_addr
.u
.addr
== addr
;
636 /*****************************************
637 ** STATIC LOCAL FUNCTIONS **
638 ******************************************/