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
->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
->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 (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
->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_win_element
*element
= win_info
->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
->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 tui_refresh_win (win_info
);
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
->content
[lineno
- 1];
276 if (line
->which_element
.source
.is_exec_point
)
277 tui_set_reverse_mode (win_info
->handle
, true);
279 wmove (win_info
->handle
, lineno
, 1);
280 tui_puts (line
->which_element
.source
.line
,
282 if (line
->which_element
.source
.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_win_info
*win_info
)
297 if (win_info
->content_size
> 0)
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 tui_refresh_win (win_info
);
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
,
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
)
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
)
367 while (i
< content_size
)
370 struct tui_line_or_address content_loa
=
371 content
[i
]->which_element
.source
.line_or_addr
;
373 gdb_assert (l
.loa
== LOA_ADDRESS
|| l
.loa
== LOA_LINE
);
374 gdb_assert (content_loa
.loa
== LOA_LINE
375 || content_loa
.loa
== LOA_ADDRESS
);
376 if (content_loa
.loa
== l
.loa
377 && ((l
.loa
== LOA_LINE
&& content_loa
.u
.line_no
== l
.u
.line_no
)
378 || (content_loa
.u
.addr
== l
.u
.addr
)))
382 if (new_state
!= content
[i
]->which_element
.source
.is_exec_point
)
385 content
[i
]->which_element
.source
.is_exec_point
= new_state
;
386 tui_show_source_line (this, i
+ 1);
394 /* Update the execution windows to show the active breakpoints.
395 This is called whenever a breakpoint is inserted, removed or
396 has its state changed. */
398 tui_update_all_breakpoint_info ()
400 for (tui_source_window_base
*win
: tui_source_windows ())
402 if (tui_update_breakpoint_info (win
, FALSE
))
404 tui_update_exec_info (win
);
410 /* Scan the source window and the breakpoints to update the has_break
411 information for each line.
413 Returns 1 if something changed and the execution window must be
417 tui_update_breakpoint_info (struct tui_win_info
*win
,
421 int need_refresh
= 0;
422 tui_source_window_base
*src
= (tui_source_window_base
*) win
;
424 for (i
= 0; i
< win
->content_size
; i
++)
426 struct breakpoint
*bp
;
427 extern struct breakpoint
*breakpoint_chain
;
429 struct tui_source_element
*line
;
431 line
= &win
->content
[i
]->which_element
.source
;
432 if (current_only
&& !line
->is_exec_point
)
435 /* Scan each breakpoint to see if the current line has something to
436 do with it. Identify enable/disabled breakpoints as well as
437 those that we already hit. */
439 for (bp
= breakpoint_chain
;
443 struct bp_location
*loc
;
445 gdb_assert (line
->line_or_addr
.loa
== LOA_LINE
446 || line
->line_or_addr
.loa
== LOA_ADDRESS
);
448 for (loc
= bp
->loc
; loc
!= NULL
; loc
= loc
->next
)
450 if ((win
== TUI_SRC_WIN
451 && loc
->symtab
!= NULL
452 && filename_cmp (src
->fullname
,
453 symtab_to_fullname (loc
->symtab
)) == 0
454 && line
->line_or_addr
.loa
== LOA_LINE
455 && loc
->line_number
== line
->line_or_addr
.u
.line_no
)
456 || (win
== TUI_DISASM_WIN
457 && line
->line_or_addr
.loa
== LOA_ADDRESS
458 && loc
->address
== line
->line_or_addr
.u
.addr
))
460 if (bp
->enable_state
== bp_disabled
)
461 mode
|= TUI_BP_DISABLED
;
463 mode
|= TUI_BP_ENABLED
;
467 mode
|= TUI_BP_CONDITIONAL
;
468 if (bp
->type
== bp_hardware_breakpoint
)
469 mode
|= TUI_BP_HARDWARE
;
473 if (line
->has_break
!= mode
)
475 line
->has_break
= mode
;
483 /* Function to initialize the content of the execution info window,
484 based upon the input window which is either the source or
485 disassembly window. */
487 tui_set_exec_info_content (struct tui_win_info
*win_info
)
489 enum tui_status ret
= TUI_SUCCESS
;
491 tui_source_window_base
*base
= (tui_source_window_base
*) win_info
;
492 if (base
->execution_info
!= NULL
)
494 struct tui_gen_win_info
*exec_info_ptr
= base
->execution_info
;
496 if (exec_info_ptr
->content
== NULL
)
497 exec_info_ptr
->content
=
498 tui_alloc_content (win_info
->height
, exec_info_ptr
->type
);
499 if (exec_info_ptr
->content
!= NULL
)
503 tui_update_breakpoint_info (win_info
, 1);
504 for (i
= 0; i
< win_info
->content_size
; i
++)
506 struct tui_win_element
*element
;
507 struct tui_win_element
*src_element
;
510 element
= exec_info_ptr
->content
[i
];
511 src_element
= win_info
->content
[i
];
513 memset(element
->which_element
.simple_string
, ' ',
514 sizeof(element
->which_element
.simple_string
));
515 element
->which_element
.simple_string
[TUI_EXECINFO_SIZE
- 1] = 0;
517 /* Now update the exec info content based upon the state
518 of each line as indicated by the source content. */
519 mode
= src_element
->which_element
.source
.has_break
;
520 if (mode
& TUI_BP_HIT
)
521 element
->which_element
.simple_string
[TUI_BP_HIT_POS
] =
522 (mode
& TUI_BP_HARDWARE
) ? 'H' : 'B';
523 else if (mode
& (TUI_BP_ENABLED
| TUI_BP_DISABLED
))
524 element
->which_element
.simple_string
[TUI_BP_HIT_POS
] =
525 (mode
& TUI_BP_HARDWARE
) ? 'h' : 'b';
527 if (mode
& TUI_BP_ENABLED
)
528 element
->which_element
.simple_string
[TUI_BP_BREAK_POS
] = '+';
529 else if (mode
& TUI_BP_DISABLED
)
530 element
->which_element
.simple_string
[TUI_BP_BREAK_POS
] = '-';
532 if (src_element
->which_element
.source
.is_exec_point
)
533 element
->which_element
.simple_string
[TUI_EXEC_POS
] = '>';
535 exec_info_ptr
->content_size
= win_info
->content_size
;
546 tui_show_exec_info_content (struct tui_win_info
*win_info
)
548 tui_source_window_base
*base
= (tui_source_window_base
*) win_info
;
549 struct tui_gen_win_info
*exec_info
= base
->execution_info
;
552 werase (exec_info
->handle
);
553 tui_refresh_win (exec_info
);
554 for (cur_line
= 1; (cur_line
<= exec_info
->content_size
); cur_line
++)
555 mvwaddstr (exec_info
->handle
,
558 (char *) exec_info
->content
[cur_line
- 1]
559 ->which_element
.simple_string
);
560 tui_refresh_win (exec_info
);
561 exec_info
->content_in_use
= TRUE
;
566 tui_erase_exec_info_content (struct tui_win_info
*win_info
)
568 tui_source_window_base
*base
= (tui_source_window_base
*) win_info
;
569 struct tui_gen_win_info
*exec_info
= base
->execution_info
;
571 werase (exec_info
->handle
);
572 tui_refresh_win (exec_info
);
576 tui_clear_exec_info_content (struct tui_win_info
*win_info
)
578 tui_source_window_base
*base
= (tui_source_window_base
*) win_info
;
579 base
->execution_info
->content_in_use
= FALSE
;
580 tui_erase_exec_info_content (win_info
);
585 /* Function to update the execution info window. */
587 tui_update_exec_info (struct tui_win_info
*win_info
)
589 tui_set_exec_info_content (win_info
);
590 tui_show_exec_info_content (win_info
);
594 tui_alloc_source_buffer (struct tui_win_info
*win_info
)
596 int i
, line_width
, max_lines
;
598 /* The window width/height includes the highlight box. Determine actual
599 content dimensions, including string null-terminators. */
600 max_lines
= win_info
->height
- 2;
601 line_width
= win_info
->width
- 2 + 1;
603 /* Allocate the buffer for the source lines. */
604 if (win_info
->content
== NULL
)
606 /* Allocate the content list. */
607 win_info
->content
= tui_alloc_content (max_lines
, SRC_WIN
);
608 for (i
= 0; i
< max_lines
; i
++)
609 win_info
->content
[i
]->which_element
.source
.line
610 = (char *) xmalloc (line_width
);
617 /* Answer whether a particular line number or address is displayed
618 in the current source window. */
620 tui_line_is_displayed (int line
,
621 struct tui_win_info
*win_info
,
624 int is_displayed
= FALSE
;
628 threshold
= SCROLL_THRESHOLD
;
632 while (i
< win_info
->content_size
- threshold
636 = win_info
->content
[i
]
637 ->which_element
.source
.line_or_addr
.loa
== LOA_LINE
638 && win_info
->content
[i
]
639 ->which_element
.source
.line_or_addr
.u
.line_no
== line
;
647 /* Answer whether a particular line number or address is displayed
648 in the current source window. */
650 tui_addr_is_displayed (CORE_ADDR addr
,
651 struct tui_win_info
*win_info
,
654 int is_displayed
= FALSE
;
658 threshold
= SCROLL_THRESHOLD
;
662 while (i
< win_info
->content_size
- threshold
666 = win_info
->content
[i
]
667 ->which_element
.source
.line_or_addr
.loa
== LOA_ADDRESS
668 && win_info
->content
[i
]
669 ->which_element
.source
.line_or_addr
.u
.addr
== addr
;
677 /*****************************************
678 ** STATIC LOCAL FUNCTIONS **
679 ******************************************/