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_win_info
*win_info
,
73 struct gdbarch
*gdbarch
,
75 struct tui_line_or_address line_or_addr
,
78 tui_source_window_base
*base
= (tui_source_window_base
*) win_info
;
79 base
->horizontal_offset
= 0;
80 tui_update_source_window_as_is (win_info
, gdbarch
, s
, line_or_addr
, noerror
);
86 /* Function to display source in the source/asm window. This function
87 shows the source as specified by the horizontal offset. */
89 tui_update_source_window_as_is (struct tui_win_info
*win_info
,
90 struct gdbarch
*gdbarch
,
92 struct tui_line_or_address line_or_addr
,
97 if (win_info
->generic
.type
== SRC_WIN
)
98 ret
= tui_set_source_content (s
, line_or_addr
.u
.line_no
, noerror
);
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
, 0);
110 tui_show_source_content (win_info
);
111 tui_update_exec_info (win_info
);
112 if (win_info
->generic
.type
== SRC_WIN
)
116 sal
.line
= line_or_addr
.u
.line_no
+
117 (win_info
->generic
.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 (TUI_SRC_WIN
);
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 (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 (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_win_info
*win_info
,
211 if (win_info
!= NULL
)
215 win_info
->generic
.content_in_use
= FALSE
;
216 tui_erase_source_content (win_info
, display_prompt
);
217 for (i
= 0; i
< win_info
->generic
.content_size
; i
++)
219 struct tui_win_element
*element
= win_info
->generic
.content
[i
];
221 element
->which_element
.source
.has_break
= FALSE
;
222 element
->which_element
.source
.is_exec_point
= FALSE
;
229 tui_erase_source_content (struct tui_win_info
*win_info
,
233 int half_width
= (win_info
->generic
.width
- 2) / 2;
235 if (win_info
->generic
.handle
!= NULL
)
237 werase (win_info
->generic
.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
->generic
.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
->generic
.handle
,
252 (win_info
->generic
.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 tui_refresh_win (&win_info
->generic
);
268 /* Redraw the complete line of a source or disassembly window. */
270 tui_show_source_line (struct tui_win_info
*win_info
, int lineno
)
272 struct tui_win_element
*line
;
275 line
= win_info
->generic
.content
[lineno
- 1];
276 if (line
->which_element
.source
.is_exec_point
)
277 tui_set_reverse_mode (win_info
->generic
.handle
, true);
279 wmove (win_info
->generic
.handle
, lineno
, 1);
280 tui_puts (line
->which_element
.source
.line
,
281 win_info
->generic
.handle
);
282 if (line
->which_element
.source
.is_exec_point
)
283 tui_set_reverse_mode (win_info
->generic
.handle
, false);
285 /* Clear to end of line but stop before the border. */
286 x
= getcurx (win_info
->generic
.handle
);
287 while (x
+ 1 < win_info
->generic
.width
)
289 waddch (win_info
->generic
.handle
, ' ');
290 x
= getcurx (win_info
->generic
.handle
);
295 tui_show_source_content (struct tui_win_info
*win_info
)
297 if (win_info
->generic
.content_size
> 0)
301 for (lineno
= 1; lineno
<= win_info
->generic
.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 tui_refresh_win (&win_info
->generic
);
309 win_info
->generic
.content_in_use
= TRUE
;
312 /* See tui-data.h. */
315 tui_source_window_base::refill ()
319 if (generic
.type
== SRC_WIN
)
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
,
329 ->which_element
.source
.line_or_addr
,
333 /* Scroll the source forward or backward horizontally. */
336 tui_source_window_base::do_scroll_horizontal
337 (enum tui_scroll_direction direction
, int num_to_scroll
)
339 if (generic
.content
!= NULL
)
343 if (direction
== LEFT_SCROLL
)
344 offset
= horizontal_offset
+ num_to_scroll
;
347 offset
= horizontal_offset
- num_to_scroll
;
351 horizontal_offset
= offset
;
357 /* Set or clear the has_break flag in the line whose line is
361 tui_source_window_base::set_is_exec_point_at (struct tui_line_or_address l
)
365 tui_win_content content
= generic
.content
;
368 while (i
< generic
.content_size
)
371 struct tui_line_or_address content_loa
=
372 content
[i
]->which_element
.source
.line_or_addr
;
374 gdb_assert (l
.loa
== LOA_ADDRESS
|| l
.loa
== LOA_LINE
);
375 gdb_assert (content_loa
.loa
== LOA_LINE
376 || content_loa
.loa
== LOA_ADDRESS
);
377 if (content_loa
.loa
== l
.loa
378 && ((l
.loa
== LOA_LINE
&& content_loa
.u
.line_no
== l
.u
.line_no
)
379 || (content_loa
.u
.addr
== l
.u
.addr
)))
383 if (new_state
!= content
[i
]->which_element
.source
.is_exec_point
)
386 content
[i
]->which_element
.source
.is_exec_point
= new_state
;
387 tui_show_source_line (this, i
+ 1);
395 /* Update the execution windows to show the active breakpoints.
396 This is called whenever a breakpoint is inserted, removed or
397 has its state changed. */
399 tui_update_all_breakpoint_info ()
401 for (tui_source_window_base
*win
: tui_source_windows ())
403 if (tui_update_breakpoint_info (win
, FALSE
))
405 tui_update_exec_info (win
);
411 /* Scan the source window and the breakpoints to update the has_break
412 information for each line.
414 Returns 1 if something changed and the execution window must be
418 tui_update_breakpoint_info (struct tui_win_info
*win
,
422 int need_refresh
= 0;
423 tui_source_window_base
*src
= (tui_source_window_base
*) win
;
425 for (i
= 0; i
< win
->generic
.content_size
; i
++)
427 struct breakpoint
*bp
;
428 extern struct breakpoint
*breakpoint_chain
;
430 struct tui_source_element
*line
;
432 line
= &win
->generic
.content
[i
]->which_element
.source
;
433 if (current_only
&& !line
->is_exec_point
)
436 /* Scan each breakpoint to see if the current line has something to
437 do with it. Identify enable/disabled breakpoints as well as
438 those that we already hit. */
440 for (bp
= breakpoint_chain
;
444 struct bp_location
*loc
;
446 gdb_assert (line
->line_or_addr
.loa
== LOA_LINE
447 || line
->line_or_addr
.loa
== LOA_ADDRESS
);
449 for (loc
= bp
->loc
; loc
!= NULL
; loc
= loc
->next
)
451 if ((win
== TUI_SRC_WIN
452 && loc
->symtab
!= NULL
453 && filename_cmp (src
->fullname
,
454 symtab_to_fullname (loc
->symtab
)) == 0
455 && line
->line_or_addr
.loa
== LOA_LINE
456 && loc
->line_number
== line
->line_or_addr
.u
.line_no
)
457 || (win
== TUI_DISASM_WIN
458 && line
->line_or_addr
.loa
== LOA_ADDRESS
459 && loc
->address
== line
->line_or_addr
.u
.addr
))
461 if (bp
->enable_state
== bp_disabled
)
462 mode
|= TUI_BP_DISABLED
;
464 mode
|= TUI_BP_ENABLED
;
468 mode
|= TUI_BP_CONDITIONAL
;
469 if (bp
->type
== bp_hardware_breakpoint
)
470 mode
|= TUI_BP_HARDWARE
;
474 if (line
->has_break
!= mode
)
476 line
->has_break
= mode
;
484 /* Function to initialize the content of the execution info window,
485 based upon the input window which is either the source or
486 disassembly window. */
488 tui_set_exec_info_content (struct tui_win_info
*win_info
)
490 enum tui_status ret
= TUI_SUCCESS
;
492 tui_source_window_base
*base
= (tui_source_window_base
*) win_info
;
493 if (base
->execution_info
!= NULL
)
495 struct tui_gen_win_info
*exec_info_ptr
= base
->execution_info
;
497 if (exec_info_ptr
->content
== NULL
)
498 exec_info_ptr
->content
=
499 tui_alloc_content (win_info
->generic
.height
, exec_info_ptr
->type
);
500 if (exec_info_ptr
->content
!= NULL
)
504 tui_update_breakpoint_info (win_info
, 1);
505 for (i
= 0; i
< win_info
->generic
.content_size
; i
++)
507 struct tui_win_element
*element
;
508 struct tui_win_element
*src_element
;
511 element
= exec_info_ptr
->content
[i
];
512 src_element
= win_info
->generic
.content
[i
];
514 memset(element
->which_element
.simple_string
, ' ',
515 sizeof(element
->which_element
.simple_string
));
516 element
->which_element
.simple_string
[TUI_EXECINFO_SIZE
- 1] = 0;
518 /* Now update the exec info content based upon the state
519 of each line as indicated by the source content. */
520 mode
= src_element
->which_element
.source
.has_break
;
521 if (mode
& TUI_BP_HIT
)
522 element
->which_element
.simple_string
[TUI_BP_HIT_POS
] =
523 (mode
& TUI_BP_HARDWARE
) ? 'H' : 'B';
524 else if (mode
& (TUI_BP_ENABLED
| TUI_BP_DISABLED
))
525 element
->which_element
.simple_string
[TUI_BP_HIT_POS
] =
526 (mode
& TUI_BP_HARDWARE
) ? 'h' : 'b';
528 if (mode
& TUI_BP_ENABLED
)
529 element
->which_element
.simple_string
[TUI_BP_BREAK_POS
] = '+';
530 else if (mode
& TUI_BP_DISABLED
)
531 element
->which_element
.simple_string
[TUI_BP_BREAK_POS
] = '-';
533 if (src_element
->which_element
.source
.is_exec_point
)
534 element
->which_element
.simple_string
[TUI_EXEC_POS
] = '>';
536 exec_info_ptr
->content_size
= win_info
->generic
.content_size
;
547 tui_show_exec_info_content (struct tui_win_info
*win_info
)
549 tui_source_window_base
*base
= (tui_source_window_base
*) win_info
;
550 struct tui_gen_win_info
*exec_info
= base
->execution_info
;
553 werase (exec_info
->handle
);
554 tui_refresh_win (exec_info
);
555 for (cur_line
= 1; (cur_line
<= exec_info
->content_size
); cur_line
++)
556 mvwaddstr (exec_info
->handle
,
559 (char *) exec_info
->content
[cur_line
- 1]
560 ->which_element
.simple_string
);
561 tui_refresh_win (exec_info
);
562 exec_info
->content_in_use
= TRUE
;
567 tui_erase_exec_info_content (struct tui_win_info
*win_info
)
569 tui_source_window_base
*base
= (tui_source_window_base
*) win_info
;
570 struct tui_gen_win_info
*exec_info
= base
->execution_info
;
572 werase (exec_info
->handle
);
573 tui_refresh_win (exec_info
);
577 tui_clear_exec_info_content (struct tui_win_info
*win_info
)
579 tui_source_window_base
*base
= (tui_source_window_base
*) win_info
;
580 base
->execution_info
->content_in_use
= FALSE
;
581 tui_erase_exec_info_content (win_info
);
586 /* Function to update the execution info window. */
588 tui_update_exec_info (struct tui_win_info
*win_info
)
590 tui_set_exec_info_content (win_info
);
591 tui_show_exec_info_content (win_info
);
595 tui_alloc_source_buffer (struct tui_win_info
*win_info
)
597 int i
, line_width
, max_lines
;
599 /* The window width/height includes the highlight box. Determine actual
600 content dimensions, including string null-terminators. */
601 max_lines
= win_info
->generic
.height
- 2;
602 line_width
= win_info
->generic
.width
- 2 + 1;
604 /* Allocate the buffer for the source lines. */
605 if (win_info
->generic
.content
== NULL
)
607 /* Allocate the content list. */
608 win_info
->generic
.content
= tui_alloc_content (max_lines
, SRC_WIN
);
609 for (i
= 0; i
< max_lines
; i
++)
610 win_info
->generic
.content
[i
]->which_element
.source
.line
611 = (char *) xmalloc (line_width
);
618 /* Answer whether a particular line number or address is displayed
619 in the current source window. */
621 tui_line_is_displayed (int line
,
622 struct tui_win_info
*win_info
,
625 int is_displayed
= FALSE
;
629 threshold
= SCROLL_THRESHOLD
;
633 while (i
< win_info
->generic
.content_size
- threshold
637 = win_info
->generic
.content
[i
]
638 ->which_element
.source
.line_or_addr
.loa
== LOA_LINE
639 && win_info
->generic
.content
[i
]
640 ->which_element
.source
.line_or_addr
.u
.line_no
== line
;
648 /* Answer whether a particular line number or address is displayed
649 in the current source window. */
651 tui_addr_is_displayed (CORE_ADDR addr
,
652 struct tui_win_info
*win_info
,
655 int is_displayed
= FALSE
;
659 threshold
= SCROLL_THRESHOLD
;
663 while (i
< win_info
->generic
.content_size
- threshold
667 = win_info
->generic
.content
[i
]
668 ->which_element
.source
.line_or_addr
.loa
== LOA_ADDRESS
669 && win_info
->generic
.content
[i
]
670 ->which_element
.source
.line_or_addr
.u
.addr
== addr
;
678 /*****************************************
679 ** STATIC LOCAL FUNCTIONS **
680 ******************************************/