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
336 (enum tui_scroll_direction direction
, int num_to_scroll
)
342 if (direction
== LEFT_SCROLL
)
343 offset
= horizontal_offset
+ num_to_scroll
;
346 offset
= horizontal_offset
- num_to_scroll
;
350 horizontal_offset
= offset
;
356 /* Set or clear the has_break flag in the line whose line is
360 tui_source_window_base::set_is_exec_point_at (struct tui_line_or_address l
)
366 while (i
< content_size
)
369 struct tui_line_or_address content_loa
=
370 content
[i
]->which_element
.source
.line_or_addr
;
372 gdb_assert (l
.loa
== LOA_ADDRESS
|| l
.loa
== LOA_LINE
);
373 gdb_assert (content_loa
.loa
== LOA_LINE
374 || content_loa
.loa
== LOA_ADDRESS
);
375 if (content_loa
.loa
== l
.loa
376 && ((l
.loa
== LOA_LINE
&& content_loa
.u
.line_no
== l
.u
.line_no
)
377 || (content_loa
.u
.addr
== l
.u
.addr
)))
381 if (new_state
!= content
[i
]->which_element
.source
.is_exec_point
)
384 content
[i
]->which_element
.source
.is_exec_point
= new_state
;
385 tui_show_source_line (this, i
+ 1);
393 /* Update the execution windows to show the active breakpoints.
394 This is called whenever a breakpoint is inserted, removed or
395 has its state changed. */
397 tui_update_all_breakpoint_info ()
399 for (tui_source_window_base
*win
: tui_source_windows ())
401 if (tui_update_breakpoint_info (win
, FALSE
))
403 tui_update_exec_info (win
);
409 /* Scan the source window and the breakpoints to update the has_break
410 information for each line.
412 Returns 1 if something changed and the execution window must be
416 tui_update_breakpoint_info (struct tui_win_info
*win
,
420 int need_refresh
= 0;
421 tui_source_window_base
*src
= (tui_source_window_base
*) win
;
423 for (i
= 0; i
< win
->content_size
; i
++)
425 struct breakpoint
*bp
;
426 extern struct breakpoint
*breakpoint_chain
;
428 struct tui_source_element
*line
;
430 line
= &win
->content
[i
]->which_element
.source
;
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. */
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 for (loc
= bp
->loc
; loc
!= NULL
; loc
= loc
->next
)
449 if ((win
== TUI_SRC_WIN
450 && loc
->symtab
!= NULL
451 && filename_cmp (src
->fullname
,
452 symtab_to_fullname (loc
->symtab
)) == 0
453 && line
->line_or_addr
.loa
== LOA_LINE
454 && loc
->line_number
== line
->line_or_addr
.u
.line_no
)
455 || (win
== TUI_DISASM_WIN
456 && line
->line_or_addr
.loa
== LOA_ADDRESS
457 && loc
->address
== line
->line_or_addr
.u
.addr
))
459 if (bp
->enable_state
== bp_disabled
)
460 mode
|= TUI_BP_DISABLED
;
462 mode
|= TUI_BP_ENABLED
;
466 mode
|= TUI_BP_CONDITIONAL
;
467 if (bp
->type
== bp_hardware_breakpoint
)
468 mode
|= TUI_BP_HARDWARE
;
472 if (line
->has_break
!= mode
)
474 line
->has_break
= mode
;
482 /* Function to initialize the content of the execution info window,
483 based upon the input window which is either the source or
484 disassembly window. */
486 tui_set_exec_info_content (struct tui_win_info
*win_info
)
488 enum tui_status ret
= TUI_SUCCESS
;
490 tui_source_window_base
*base
= (tui_source_window_base
*) win_info
;
491 if (base
->execution_info
!= NULL
)
493 struct tui_gen_win_info
*exec_info_ptr
= base
->execution_info
;
495 if (exec_info_ptr
->content
== NULL
)
496 exec_info_ptr
->content
=
497 tui_alloc_content (win_info
->height
, exec_info_ptr
->type
);
498 if (exec_info_ptr
->content
!= NULL
)
502 tui_update_breakpoint_info (win_info
, 1);
503 for (i
= 0; i
< win_info
->content_size
; i
++)
505 struct tui_win_element
*element
;
506 struct tui_win_element
*src_element
;
509 element
= exec_info_ptr
->content
[i
];
510 src_element
= win_info
->content
[i
];
512 memset(element
->which_element
.simple_string
, ' ',
513 sizeof(element
->which_element
.simple_string
));
514 element
->which_element
.simple_string
[TUI_EXECINFO_SIZE
- 1] = 0;
516 /* Now update the exec info content based upon the state
517 of each line as indicated by the source content. */
518 mode
= src_element
->which_element
.source
.has_break
;
519 if (mode
& TUI_BP_HIT
)
520 element
->which_element
.simple_string
[TUI_BP_HIT_POS
] =
521 (mode
& TUI_BP_HARDWARE
) ? 'H' : 'B';
522 else if (mode
& (TUI_BP_ENABLED
| TUI_BP_DISABLED
))
523 element
->which_element
.simple_string
[TUI_BP_HIT_POS
] =
524 (mode
& TUI_BP_HARDWARE
) ? 'h' : 'b';
526 if (mode
& TUI_BP_ENABLED
)
527 element
->which_element
.simple_string
[TUI_BP_BREAK_POS
] = '+';
528 else if (mode
& TUI_BP_DISABLED
)
529 element
->which_element
.simple_string
[TUI_BP_BREAK_POS
] = '-';
531 if (src_element
->which_element
.source
.is_exec_point
)
532 element
->which_element
.simple_string
[TUI_EXEC_POS
] = '>';
534 exec_info_ptr
->content_size
= win_info
->content_size
;
545 tui_show_exec_info_content (struct tui_win_info
*win_info
)
547 tui_source_window_base
*base
= (tui_source_window_base
*) win_info
;
548 struct tui_gen_win_info
*exec_info
= base
->execution_info
;
551 werase (exec_info
->handle
);
552 exec_info
->refresh_window ();
553 for (cur_line
= 1; (cur_line
<= exec_info
->content_size
); cur_line
++)
554 mvwaddstr (exec_info
->handle
,
557 (char *) exec_info
->content
[cur_line
- 1]
558 ->which_element
.simple_string
);
559 exec_info
->refresh_window ();
560 exec_info
->content_in_use
= TRUE
;
565 tui_erase_exec_info_content (struct tui_win_info
*win_info
)
567 tui_source_window_base
*base
= (tui_source_window_base
*) win_info
;
568 struct tui_gen_win_info
*exec_info
= base
->execution_info
;
570 werase (exec_info
->handle
);
571 exec_info
->refresh_window ();
575 tui_clear_exec_info_content (struct tui_win_info
*win_info
)
577 tui_source_window_base
*base
= (tui_source_window_base
*) win_info
;
578 base
->execution_info
->content_in_use
= FALSE
;
579 tui_erase_exec_info_content (win_info
);
584 /* Function to update the execution info window. */
586 tui_update_exec_info (struct tui_win_info
*win_info
)
588 tui_set_exec_info_content (win_info
);
589 tui_show_exec_info_content (win_info
);
593 tui_alloc_source_buffer (struct tui_win_info
*win_info
)
595 int i
, line_width
, max_lines
;
597 /* The window width/height includes the highlight box. Determine actual
598 content dimensions, including string null-terminators. */
599 max_lines
= win_info
->height
- 2;
600 line_width
= win_info
->width
- 2 + 1;
602 /* Allocate the buffer for the source lines. */
603 if (win_info
->content
== NULL
)
605 /* Allocate the content list. */
606 win_info
->content
= tui_alloc_content (max_lines
, SRC_WIN
);
607 for (i
= 0; i
< max_lines
; i
++)
608 win_info
->content
[i
]->which_element
.source
.line
609 = (char *) xmalloc (line_width
);
616 /* Answer whether a particular line number or address is displayed
617 in the current source window. */
619 tui_line_is_displayed (int line
,
620 struct tui_win_info
*win_info
,
623 int is_displayed
= FALSE
;
627 threshold
= SCROLL_THRESHOLD
;
631 while (i
< win_info
->content_size
- threshold
635 = win_info
->content
[i
]
636 ->which_element
.source
.line_or_addr
.loa
== LOA_LINE
637 && win_info
->content
[i
]
638 ->which_element
.source
.line_or_addr
.u
.line_no
== line
;
646 /* Answer whether a particular line number or address is displayed
647 in the current source window. */
649 tui_addr_is_displayed (CORE_ADDR addr
,
650 struct tui_win_info
*win_info
,
653 int is_displayed
= FALSE
;
657 threshold
= SCROLL_THRESHOLD
;
661 while (i
< win_info
->content_size
- threshold
665 = win_info
->content
[i
]
666 ->which_element
.source
.line_or_addr
.loa
== LOA_ADDRESS
667 && win_info
->content
[i
]
668 ->which_element
.source
.line_or_addr
.u
.addr
== addr
;
676 /*****************************************
677 ** STATIC LOCAL FUNCTIONS **
678 ******************************************/