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 (s
, line_or_addr
.u
.line_no
, noerror
);
99 ret
= tui_set_disassem_content (gdbarch
, line_or_addr
.u
.addr
);
101 if (ret
== TUI_FAILURE
)
103 tui_clear_source_content (win_info
, EMPTY_SOURCE_PROMPT
);
104 tui_clear_exec_info_content (win_info
);
108 tui_update_breakpoint_info (win_info
, 0);
109 tui_show_source_content (win_info
);
110 tui_update_exec_info (win_info
);
111 if (win_info
->type
== SRC_WIN
)
115 sal
.line
= line_or_addr
.u
.line_no
+
116 (win_info
->content_size
- 2);
118 sal
.pspace
= SYMTAB_PSPACE (s
);
119 set_current_source_symtab_and_line (sal
);
120 /* If the focus was in the asm win, put it in the src win if
121 we don't have a split layout. */
122 if (tui_win_with_focus () == TUI_DISASM_WIN
123 && tui_current_layout () != SRC_DISASSEM_COMMAND
)
124 tui_set_win_focus_to (TUI_SRC_WIN
);
133 /* Function to ensure that the source and/or disassemly windows
134 reflect the input address. */
136 tui_update_source_windows_with_addr (struct gdbarch
*gdbarch
, CORE_ADDR addr
)
140 struct symtab_and_line sal
;
141 struct tui_line_or_address l
;
143 switch (tui_current_layout ())
145 case DISASSEM_COMMAND
:
146 case DISASSEM_DATA_COMMAND
:
147 tui_show_disassem (gdbarch
, addr
);
149 case SRC_DISASSEM_COMMAND
:
150 tui_show_disassem_and_update_source (gdbarch
, addr
);
153 sal
= find_pc_line (addr
, 0);
155 l
.u
.line_no
= sal
.line
;
156 tui_show_symtab_source (gdbarch
, sal
.symtab
, l
, FALSE
);
162 for (struct tui_source_window_base
*win_info
: tui_source_windows ())
164 tui_clear_source_content (win_info
, EMPTY_SOURCE_PROMPT
);
165 tui_clear_exec_info_content (win_info
);
170 /* Function to ensure that the source and/or disassemly windows
171 reflect the input address. */
173 tui_update_source_windows_with_line (struct symtab
*s
, int line
)
175 struct gdbarch
*gdbarch
;
177 struct tui_line_or_address l
;
182 gdbarch
= get_objfile_arch (SYMTAB_OBJFILE (s
));
184 switch (tui_current_layout ())
186 case DISASSEM_COMMAND
:
187 case DISASSEM_DATA_COMMAND
:
188 find_line_pc (s
, line
, &pc
);
189 tui_update_source_windows_with_addr (gdbarch
, pc
);
194 tui_show_symtab_source (gdbarch
, s
, l
, FALSE
);
195 if (tui_current_layout () == SRC_DISASSEM_COMMAND
)
197 find_line_pc (s
, line
, &pc
);
198 tui_show_disassem (gdbarch
, pc
);
207 tui_clear_source_content (struct tui_win_info
*win_info
,
210 if (win_info
!= NULL
)
214 win_info
->content_in_use
= FALSE
;
215 tui_erase_source_content (win_info
, display_prompt
);
216 for (i
= 0; i
< win_info
->content_size
; i
++)
218 struct tui_win_element
*element
= win_info
->content
[i
];
220 element
->which_element
.source
.has_break
= FALSE
;
221 element
->which_element
.source
.is_exec_point
= FALSE
;
228 tui_erase_source_content (struct tui_win_info
*win_info
,
232 int half_width
= (win_info
->width
- 2) / 2;
234 if (win_info
->handle
!= NULL
)
236 werase (win_info
->handle
);
237 tui_check_and_display_highlight_if_needed (win_info
);
238 if (display_prompt
== EMPTY_SOURCE_PROMPT
)
240 const char *no_src_str
;
242 if (win_info
->type
== SRC_WIN
)
243 no_src_str
= NO_SRC_STRING
;
245 no_src_str
= NO_DISASSEM_STRING
;
246 if (strlen (no_src_str
) >= half_width
)
249 x_pos
= half_width
- strlen (no_src_str
);
250 mvwaddstr (win_info
->handle
,
251 (win_info
->height
/ 2),
253 (char *) no_src_str
);
255 /* elz: Added this function call to set the real contents of
256 the window to what is on the screen, so that later calls
257 to refresh, do display the correct stuff, and not the old
260 tui_set_source_content_nil (win_info
, no_src_str
);
262 win_info
->refresh_window ();
267 /* Redraw the complete line of a source or disassembly window. */
269 tui_show_source_line (struct tui_win_info
*win_info
, int lineno
)
271 struct tui_win_element
*line
;
274 line
= win_info
->content
[lineno
- 1];
275 if (line
->which_element
.source
.is_exec_point
)
276 tui_set_reverse_mode (win_info
->handle
, true);
278 wmove (win_info
->handle
, lineno
, 1);
279 tui_puts (line
->which_element
.source
.line
,
281 if (line
->which_element
.source
.is_exec_point
)
282 tui_set_reverse_mode (win_info
->handle
, false);
284 /* Clear to end of line but stop before the border. */
285 x
= getcurx (win_info
->handle
);
286 while (x
+ 1 < win_info
->width
)
288 waddch (win_info
->handle
, ' ');
289 x
= getcurx (win_info
->handle
);
294 tui_show_source_content (struct tui_win_info
*win_info
)
296 if (win_info
->content_size
> 0)
300 for (lineno
= 1; lineno
<= win_info
->content_size
; lineno
++)
301 tui_show_source_line (win_info
, lineno
);
304 tui_erase_source_content (win_info
, TRUE
);
306 tui_check_and_display_highlight_if_needed (win_info
);
307 win_info
->refresh_window ();
308 win_info
->content_in_use
= TRUE
;
311 /* See tui-data.h. */
314 tui_source_window_base::refill ()
320 symtab_and_line cursal
= get_current_source_symtab_and_line ();
321 s
= (cursal
.symtab
== NULL
322 ? find_pc_line_symtab (get_frame_pc (get_selected_frame (NULL
)))
326 tui_update_source_window_as_is (this, gdbarch
, s
,
328 ->which_element
.source
.line_or_addr
,
332 /* Scroll the source forward or backward horizontally. */
335 tui_source_window_base::do_scroll_horizontal (int num_to_scroll
)
339 int offset
= horizontal_offset
+ num_to_scroll
;
342 horizontal_offset
= offset
;
348 /* Set or clear the has_break flag in the line whose line is
352 tui_source_window_base::set_is_exec_point_at (struct tui_line_or_address l
)
358 while (i
< content_size
)
361 struct tui_line_or_address content_loa
=
362 content
[i
]->which_element
.source
.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 || (content_loa
.u
.addr
== l
.u
.addr
)))
373 if (new_state
!= content
[i
]->which_element
.source
.is_exec_point
)
376 content
[i
]->which_element
.source
.is_exec_point
= new_state
;
377 tui_show_source_line (this, i
+ 1);
385 /* Update the execution windows to show the active breakpoints.
386 This is called whenever a breakpoint is inserted, removed or
387 has its state changed. */
389 tui_update_all_breakpoint_info ()
391 for (tui_source_window_base
*win
: tui_source_windows ())
393 if (tui_update_breakpoint_info (win
, FALSE
))
395 tui_update_exec_info (win
);
401 /* Scan the source window and the breakpoints to update the has_break
402 information for each line.
404 Returns 1 if something changed and the execution window must be
408 tui_update_breakpoint_info (struct tui_win_info
*win
,
412 int need_refresh
= 0;
413 tui_source_window_base
*src
= (tui_source_window_base
*) win
;
415 for (i
= 0; i
< win
->content_size
; i
++)
417 struct breakpoint
*bp
;
418 extern struct breakpoint
*breakpoint_chain
;
420 struct tui_source_element
*line
;
422 line
= &win
->content
[i
]->which_element
.source
;
423 if (current_only
&& !line
->is_exec_point
)
426 /* Scan each breakpoint to see if the current line has something to
427 do with it. Identify enable/disabled breakpoints as well as
428 those that we already hit. */
430 for (bp
= breakpoint_chain
;
434 struct bp_location
*loc
;
436 gdb_assert (line
->line_or_addr
.loa
== LOA_LINE
437 || line
->line_or_addr
.loa
== LOA_ADDRESS
);
439 for (loc
= bp
->loc
; loc
!= NULL
; loc
= loc
->next
)
441 if ((win
== TUI_SRC_WIN
442 && loc
->symtab
!= NULL
443 && filename_cmp (src
->fullname
,
444 symtab_to_fullname (loc
->symtab
)) == 0
445 && line
->line_or_addr
.loa
== LOA_LINE
446 && loc
->line_number
== line
->line_or_addr
.u
.line_no
)
447 || (win
== TUI_DISASM_WIN
448 && line
->line_or_addr
.loa
== LOA_ADDRESS
449 && loc
->address
== line
->line_or_addr
.u
.addr
))
451 if (bp
->enable_state
== bp_disabled
)
452 mode
|= TUI_BP_DISABLED
;
454 mode
|= TUI_BP_ENABLED
;
458 mode
|= TUI_BP_CONDITIONAL
;
459 if (bp
->type
== bp_hardware_breakpoint
)
460 mode
|= TUI_BP_HARDWARE
;
464 if (line
->has_break
!= mode
)
466 line
->has_break
= mode
;
474 /* Function to initialize the content of the execution info window,
475 based upon the input window which is either the source or
476 disassembly window. */
478 tui_set_exec_info_content (struct tui_source_window_base
*win_info
)
480 if (win_info
->execution_info
!= NULL
)
482 struct tui_gen_win_info
*exec_info_ptr
= win_info
->execution_info
;
484 if (exec_info_ptr
->content
== NULL
)
485 exec_info_ptr
->content
=
486 tui_alloc_content (win_info
->height
, exec_info_ptr
->type
);
488 tui_update_breakpoint_info (win_info
, 1);
489 for (int i
= 0; i
< win_info
->content_size
; i
++)
491 struct tui_win_element
*element
;
492 struct tui_win_element
*src_element
;
495 element
= exec_info_ptr
->content
[i
];
496 src_element
= win_info
->content
[i
];
498 memset(element
->which_element
.simple_string
, ' ',
499 sizeof(element
->which_element
.simple_string
));
500 element
->which_element
.simple_string
[TUI_EXECINFO_SIZE
- 1] = 0;
502 /* Now update the exec info content based upon the state
503 of each line as indicated by the source content. */
504 mode
= src_element
->which_element
.source
.has_break
;
505 if (mode
& TUI_BP_HIT
)
506 element
->which_element
.simple_string
[TUI_BP_HIT_POS
] =
507 (mode
& TUI_BP_HARDWARE
) ? 'H' : 'B';
508 else if (mode
& (TUI_BP_ENABLED
| TUI_BP_DISABLED
))
509 element
->which_element
.simple_string
[TUI_BP_HIT_POS
] =
510 (mode
& TUI_BP_HARDWARE
) ? 'h' : 'b';
512 if (mode
& TUI_BP_ENABLED
)
513 element
->which_element
.simple_string
[TUI_BP_BREAK_POS
] = '+';
514 else if (mode
& TUI_BP_DISABLED
)
515 element
->which_element
.simple_string
[TUI_BP_BREAK_POS
] = '-';
517 if (src_element
->which_element
.source
.is_exec_point
)
518 element
->which_element
.simple_string
[TUI_EXEC_POS
] = '>';
520 exec_info_ptr
->content_size
= win_info
->content_size
;
526 tui_show_exec_info_content (struct tui_source_window_base
*win_info
)
528 struct tui_gen_win_info
*exec_info
= win_info
->execution_info
;
531 werase (exec_info
->handle
);
532 exec_info
->refresh_window ();
533 for (cur_line
= 1; (cur_line
<= exec_info
->content_size
); cur_line
++)
534 mvwaddstr (exec_info
->handle
,
537 (char *) exec_info
->content
[cur_line
- 1]
538 ->which_element
.simple_string
);
539 exec_info
->refresh_window ();
540 exec_info
->content_in_use
= TRUE
;
545 tui_erase_exec_info_content (struct tui_source_window_base
*win_info
)
547 struct tui_gen_win_info
*exec_info
= win_info
->execution_info
;
549 werase (exec_info
->handle
);
550 exec_info
->refresh_window ();
554 tui_clear_exec_info_content (struct tui_source_window_base
*win_info
)
556 win_info
->execution_info
->content_in_use
= FALSE
;
557 tui_erase_exec_info_content (win_info
);
560 /* Function to update the execution info window. */
562 tui_update_exec_info (struct tui_source_window_base
*win_info
)
564 tui_set_exec_info_content (win_info
);
565 tui_show_exec_info_content (win_info
);
569 tui_alloc_source_buffer (struct tui_win_info
*win_info
)
571 int i
, line_width
, max_lines
;
573 /* The window width/height includes the highlight box. Determine actual
574 content dimensions, including string null-terminators. */
575 max_lines
= win_info
->height
- 2;
576 line_width
= win_info
->width
- 2 + 1;
578 /* Allocate the buffer for the source lines. */
579 if (win_info
->content
== NULL
)
581 /* Allocate the content list. */
582 win_info
->content
= tui_alloc_content (max_lines
, SRC_WIN
);
583 for (i
= 0; i
< max_lines
; i
++)
584 win_info
->content
[i
]->which_element
.source
.line
585 = (char *) xmalloc (line_width
);
590 /* Answer whether a particular line number or address is displayed
591 in the current source window. */
593 tui_line_is_displayed (int line
,
594 struct tui_win_info
*win_info
,
597 int is_displayed
= FALSE
;
601 threshold
= SCROLL_THRESHOLD
;
605 while (i
< win_info
->content_size
- threshold
609 = win_info
->content
[i
]
610 ->which_element
.source
.line_or_addr
.loa
== LOA_LINE
611 && win_info
->content
[i
]
612 ->which_element
.source
.line_or_addr
.u
.line_no
== line
;
620 /* Answer whether a particular line number or address is displayed
621 in the current source window. */
623 tui_addr_is_displayed (CORE_ADDR addr
,
624 struct tui_win_info
*win_info
,
627 int is_displayed
= FALSE
;
631 threshold
= SCROLL_THRESHOLD
;
635 while (i
< win_info
->content_size
- threshold
639 = win_info
->content
[i
]
640 ->which_element
.source
.line_or_addr
.loa
== LOA_ADDRESS
641 && win_info
->content
[i
]
642 ->which_element
.source
.line_or_addr
.u
.addr
== addr
;
650 /*****************************************
651 ** STATIC LOCAL FUNCTIONS **
652 ******************************************/