1 /* TUI display locator.
3 Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2006, 2007, 2008,
4 2009, 2010 Free Software Foundation, Inc.
6 Contributed by Hewlett-Packard Company.
8 This file is part of GDB.
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 3 of the License, or
13 (at your option) any later version.
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with this program. If not, see <http://www.gnu.org/licenses/>. */
25 #include "breakpoint.h"
31 #include "gdb_string.h"
33 #include "tui/tui-data.h"
34 #include "tui/tui-stack.h"
35 #include "tui/tui-wingeneral.h"
36 #include "tui/tui-source.h"
37 #include "tui/tui-winsource.h"
38 #include "tui/tui-file.h"
40 #include "gdb_curses.h"
42 /* Get a printable name for the function at the address.
43 The symbol name is demangled if demangling is turned on.
44 Returns a pointer to a static area holding the result. */
45 static char *tui_get_function_from_frame (struct frame_info *fi);
47 /* Set the filename portion of the locator. */
48 static void tui_set_locator_filename (const char *filename);
50 /* Update the locator, with the provided arguments. */
51 static void tui_set_locator_info (struct gdbarch *gdbarch,
54 int lineno, CORE_ADDR addr);
56 static void tui_update_command (char *, int);
59 /* Create the status line to display as much information as we can on
60 this single line: target name, process number, current function,
61 current line, current PC, SingleKey mode. */
63 tui_make_status_line (struct tui_locator_element *loc)
66 char line_buf[50], *pname;
76 struct ui_file *pc_out;
78 if (ptid_equal (inferior_ptid, null_ptid))
79 pid_name = "No process";
81 pid_name = target_pid_to_str (inferior_ptid);
83 target_width = strlen (target_shortname);
84 if (target_width > MAX_TARGET_WIDTH)
85 target_width = MAX_TARGET_WIDTH;
87 pid_width = strlen (pid_name);
88 if (pid_width > MAX_PID_WIDTH)
89 pid_width = MAX_PID_WIDTH;
91 status_size = tui_term_width ();
92 string = (char *) xmalloc (status_size + 1);
93 buf = (char*) alloca (status_size + 1);
95 /* Translate line number and obtain its size. */
97 sprintf (line_buf, "%d", loc->line_no);
99 strcpy (line_buf, "??");
100 line_width = strlen (line_buf);
101 if (line_width < MIN_LINE_WIDTH)
102 line_width = MIN_LINE_WIDTH;
104 /* Translate PC address. */
105 pc_out = tui_sfileopen (128);
106 fputs_filtered (loc->gdbarch? paddress (loc->gdbarch, loc->addr) : "??",
108 pc_buf = tui_file_get_strbuf (pc_out);
109 pc_width = strlen (pc_buf);
111 /* First determine the amount of proc name width we have available.
112 The +1 are for a space separator between fields.
113 The -1 are to take into account the \0 counted by sizeof. */
114 proc_width = (status_size
117 - (sizeof (PROC_PREFIX) - 1 + 1)
118 - (sizeof (LINE_PREFIX) - 1 + line_width + 1)
119 - (sizeof (PC_PREFIX) - 1 + pc_width + 1)
120 - (tui_current_key_mode == TUI_SINGLE_KEY_MODE
121 ? (sizeof (SINGLE_KEY) - 1 + 1)
124 /* If there is no room to print the function name, try by removing
126 if (proc_width < MIN_PROC_WIDTH)
128 proc_width += target_width + 1;
130 if (proc_width < MIN_PROC_WIDTH)
132 proc_width += pid_width + 1;
134 if (proc_width <= MIN_PROC_WIDTH)
136 proc_width += pc_width + sizeof (PC_PREFIX) - 1 + 1;
140 proc_width += line_width + sizeof (LINE_PREFIX) - 1 + 1;
149 /* Now convert elements to string form. */
150 pname = loc->proc_name;
152 /* Now create the locator line from the string version of the
153 elements. We could use sprintf() here but that wouldn't ensure
154 that we don't overrun the size of the allocated buffer.
155 strcat_to_buf() will. */
158 if (target_width > 0)
160 sprintf (buf, "%*.*s ",
161 -target_width, target_width, target_shortname);
162 strcat_to_buf (string, status_size, buf);
166 sprintf (buf, "%*.*s ",
167 -pid_width, pid_width, pid_name);
168 strcat_to_buf (string, status_size, buf);
171 /* Show whether we are in SingleKey mode. */
172 if (tui_current_key_mode == TUI_SINGLE_KEY_MODE)
174 strcat_to_buf (string, status_size, SINGLE_KEY);
175 strcat_to_buf (string, status_size, " ");
178 /* Procedure/class name. */
181 if (strlen (pname) > proc_width)
182 sprintf (buf, "%s%*.*s* ", PROC_PREFIX,
183 1 - proc_width, proc_width - 1, pname);
185 sprintf (buf, "%s%*.*s ", PROC_PREFIX,
186 -proc_width, proc_width, pname);
187 strcat_to_buf (string, status_size, buf);
192 sprintf (buf, "%s%*.*s ", LINE_PREFIX,
193 -line_width, line_width, line_buf);
194 strcat_to_buf (string, status_size, buf);
198 strcat_to_buf (string, status_size, PC_PREFIX);
199 strcat_to_buf (string, status_size, pc_buf);
203 for (i = strlen (string); i < status_size; i++)
205 string[status_size] = (char) 0;
207 ui_file_delete (pc_out);
211 /* Get a printable name for the function at the address. The symbol
212 name is demangled if demangling is turned on. Returns a pointer to
213 a static area holding the result. */
215 tui_get_function_from_frame (struct frame_info *fi)
217 static char name[256];
218 struct ui_file *stream = tui_sfileopen (256);
221 print_address_symbolic (get_frame_arch (fi), get_frame_pc (fi),
222 stream, demangle, "");
223 p = tui_file_get_strbuf (stream);
225 /* Use simple heuristics to isolate the function name. The symbol
226 can be demangled and we can have function parameters. Remove
227 them because the status line is too short to display them. */
230 strncpy (name, p, sizeof (name));
231 p = strchr (name, '(');
233 p = strchr (name, '>');
236 p = strchr (name, '+');
239 ui_file_delete (stream);
244 tui_show_locator_content (void)
247 struct tui_gen_win_info *locator;
249 locator = tui_locator_win_info_ptr ();
251 if (locator != NULL && locator->handle != (WINDOW *) NULL)
253 struct tui_win_element *element;
255 element = (struct tui_win_element *) locator->content[0];
257 string = tui_make_status_line (&element->which_element.locator);
258 wmove (locator->handle, 0, 0);
259 /* We ignore the return value from wstandout and wstandend, casting
260 them to void in order to avoid a compiler warning. The warning
261 itself was introduced by a patch to ncurses 5.7 dated 2009-08-29,
262 changing these macro to expand to code that causes the compiler
263 to generate an unused-value warning. */
264 (void) wstandout (locator->handle);
265 waddstr (locator->handle, string);
266 wclrtoeol (locator->handle);
267 (void) wstandend (locator->handle);
268 tui_refresh_win (locator);
269 wmove (locator->handle, 0, 0);
271 locator->content_in_use = TRUE;
276 /* Set the filename portion of the locator. */
278 tui_set_locator_filename (const char *filename)
280 struct tui_gen_win_info *locator = tui_locator_win_info_ptr ();
281 struct tui_locator_element *element;
283 if (locator->content[0] == NULL)
285 tui_set_locator_info (NULL, filename, NULL, 0, 0);
289 element = &((struct tui_win_element *) locator->content[0])->which_element.locator;
290 element->file_name[0] = 0;
291 strcat_to_buf (element->file_name, MAX_LOCATOR_ELEMENT_LEN, filename);
294 /* Update the locator, with the provided arguments. */
296 tui_set_locator_info (struct gdbarch *gdbarch,
297 const char *filename,
298 const char *procname,
302 struct tui_gen_win_info *locator = tui_locator_win_info_ptr ();
303 struct tui_locator_element *element;
305 /* Allocate the locator content if necessary. */
306 if (locator->content_size <= 0)
308 locator->content = (void **) tui_alloc_content (1, locator->type);
309 locator->content_size = 1;
312 element = &((struct tui_win_element *) locator->content[0])->which_element.locator;
313 element->proc_name[0] = (char) 0;
314 strcat_to_buf (element->proc_name, MAX_LOCATOR_ELEMENT_LEN, procname);
315 element->line_no = lineno;
316 element->addr = addr;
317 element->gdbarch = gdbarch;
318 tui_set_locator_filename (filename);
321 /* Update only the filename portion of the locator. */
323 tui_update_locator_filename (const char *filename)
325 tui_set_locator_filename (filename);
326 tui_show_locator_content ();
329 /* Function to print the frame information for the TUI. */
331 tui_show_frame_info (struct frame_info *fi)
333 struct tui_win_info *win_info;
340 struct tui_gen_win_info *locator = tui_locator_win_info_ptr ();
341 int source_already_displayed;
342 struct symtab_and_line sal;
344 find_frame_sal (fi, &sal);
346 source_already_displayed = sal.symtab != 0
347 && tui_source_is_displayed (sal.symtab->filename);
348 tui_set_locator_info (get_frame_arch (fi),
349 sal.symtab == 0 ? "??" : sal.symtab->filename,
350 tui_get_function_from_frame (fi),
353 tui_show_locator_content ();
355 for (i = 0; i < (tui_source_windows ())->count; i++)
357 union tui_which_element *item;
359 win_info = (tui_source_windows ())->list[i];
361 item = &((struct tui_win_element *) locator->content[0])->which_element;
362 if (win_info == TUI_SRC_WIN)
364 start_line = (item->locator.line_no -
365 (win_info->generic.viewport_height / 2)) + 1;
371 if (find_pc_partial_function (get_frame_pc (fi), (char **) NULL,
372 &low, (CORE_ADDR) 0) == 0)
373 error (_("No function contains program counter for selected frame."));
375 low = tui_get_low_disassembly_address (get_frame_arch (fi),
376 low, get_frame_pc (fi));
379 if (win_info == TUI_SRC_WIN)
381 struct tui_line_or_address l;
384 l.u.line_no = start_line;
385 if (!(source_already_displayed
386 && tui_line_is_displayed (item->locator.line_no, win_info, TRUE)))
387 tui_update_source_window (win_info, get_frame_arch (fi),
388 sal.symtab, l, TRUE);
391 l.u.line_no = item->locator.line_no;
392 tui_set_is_exec_point_at (l, win_info);
397 if (win_info == TUI_DISASM_WIN)
399 struct tui_line_or_address a;
403 if (!tui_addr_is_displayed (item->locator.addr, win_info, TRUE))
404 tui_update_source_window (win_info, get_frame_arch (fi),
405 sal.symtab, a, TRUE);
408 a.u.addr = item->locator.addr;
409 tui_set_is_exec_point_at (a, win_info);
413 tui_update_exec_info (win_info);
418 tui_set_locator_info (NULL, NULL, NULL, 0, (CORE_ADDR) 0);
419 tui_show_locator_content ();
420 for (i = 0; i < (tui_source_windows ())->count; i++)
422 win_info = (tui_source_windows ())->list[i];
423 tui_clear_source_content (win_info, EMPTY_SOURCE_PROMPT);
424 tui_update_exec_info (win_info);
429 /* Function to initialize gdb commands, for tui window stack
432 /* Provide a prototype to silence -Wmissing-prototypes. */
433 extern initialize_file_ftype _initialize_tui_stack;
436 _initialize_tui_stack (void)
438 add_com ("update", class_tui, tui_update_command, _("\
439 Update the source window and locator to display the current execution point.\n"));
442 /* Command to update the display with the current execution point. */
444 tui_update_command (char *arg, int from_tty)
446 char cmd[sizeof("frame 0")];
448 strcpy (cmd, "frame 0");
449 execute_command (cmd, from_tty);