1 /* GDB hooks for TUI. 2 3 Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 4 Free Software Foundation, Inc. 5 6 This file is part of GDB. 7 8 This program is free software; you can redistribute it and/or modify 9 it under the terms of the GNU General Public License as published by 10 the Free Software Foundation; either version 3 of the License, or 11 (at your option) any later version. 12 13 This program is distributed in the hope that it will be useful, 14 but WITHOUT ANY WARRANTY; without even the implied warranty of 15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 GNU General Public License for more details. 17 18 You should have received a copy of the GNU General Public License 19 along with this program. If not, see <http://www.gnu.org/licenses/>. */ 20 21 #include "defs.h" 22 #include "symtab.h" 23 #include "inferior.h" 24 #include "command.h" 25 #include "bfd.h" 26 #include "symfile.h" 27 #include "objfiles.h" 28 #include "target.h" 29 #include "gdbcore.h" 30 #include "event-loop.h" 31 #include "event-top.h" 32 #include "frame.h" 33 #include "breakpoint.h" 34 #include "ui-out.h" 35 #include "top.h" 36 #include "observer.h" 37 #include <unistd.h> 38 #include <fcntl.h> 39 40 #include "tui/tui.h" 41 #include "tui/tui-hooks.h" 42 #include "tui/tui-data.h" 43 #include "tui/tui-layout.h" 44 #include "tui/tui-io.h" 45 #include "tui/tui-regs.h" 46 #include "tui/tui-win.h" 47 #include "tui/tui-stack.h" 48 #include "tui/tui-windata.h" 49 #include "tui/tui-winsource.h" 50 51 #include "gdb_curses.h" 52 53 /* This redefines CTRL if it is not already defined, so it must come 54 after terminal state releated include files like <term.h> and 55 "gdb_curses.h". */ 56 #include "readline/readline.h" 57 58 int tui_target_has_run = 0; 59 60 static void 61 tui_new_objfile_hook (struct objfile* objfile) 62 { 63 if (tui_active) 64 tui_display_main (); 65 } 66 67 static int ATTR_FORMAT (printf, 1, 0) 68 tui_query_hook (const char *msg, va_list argp) 69 { 70 int retval; 71 int ans2; 72 int answer; 73 74 echo (); 75 while (1) 76 { 77 wrap_here (""); /* Flush any buffered output. */ 78 gdb_flush (gdb_stdout); 79 80 vfprintf_filtered (gdb_stdout, msg, argp); 81 printf_filtered (_("(y or n) ")); 82 83 wrap_here (""); 84 gdb_flush (gdb_stdout); 85 86 answer = tui_getc (stdin); 87 clearerr (stdin); /* in case of C-d */ 88 if (answer == EOF) /* C-d */ 89 { 90 retval = 1; 91 break; 92 } 93 /* Eat rest of input line, to EOF or newline. */ 94 if (answer != '\n') 95 do 96 { 97 ans2 = tui_getc (stdin); 98 clearerr (stdin); 99 } 100 while (ans2 != EOF && ans2 != '\n' && ans2 != '\r'); 101 102 if (answer >= 'a') 103 answer -= 040; 104 if (answer == 'Y') 105 { 106 retval = 1; 107 break; 108 } 109 if (answer == 'N') 110 { 111 retval = 0; 112 break; 113 } 114 printf_filtered (_("Please answer y or n.\n")); 115 } 116 noecho (); 117 return retval; 118 } 119 120 /* Prevent recursion of deprecated_register_changed_hook(). */ 121 static int tui_refreshing_registers = 0; 122 123 static void 124 tui_register_changed_hook (int regno) 125 { 126 struct frame_info *fi; 127 128 fi = get_selected_frame (NULL); 129 if (tui_refreshing_registers == 0) 130 { 131 tui_refreshing_registers = 1; 132 tui_check_data_values (fi); 133 tui_refreshing_registers = 0; 134 } 135 } 136 137 /* Breakpoint creation hook. 138 Update the screen to show the new breakpoint. */ 139 static void 140 tui_event_create_breakpoint (int number) 141 { 142 tui_update_all_breakpoint_info (); 143 } 144 145 /* Breakpoint deletion hook. 146 Refresh the screen to update the breakpoint marks. */ 147 static void 148 tui_event_delete_breakpoint (int number) 149 { 150 tui_update_all_breakpoint_info (); 151 } 152 153 static void 154 tui_event_modify_breakpoint (int number) 155 { 156 tui_update_all_breakpoint_info (); 157 } 158 159 /* Called when going to wait for the target. 160 Leave curses mode and setup program mode. */ 161 static ptid_t 162 tui_target_wait_hook (ptid_t pid, 163 struct target_waitstatus *status, int options) 164 { 165 ptid_t res; 166 167 /* Leave tui mode (optional). */ 168 #if 0 169 if (tui_active) 170 { 171 target_terminal_ours (); 172 endwin (); 173 target_terminal_inferior (); 174 } 175 #endif 176 tui_target_has_run = 1; 177 res = target_wait (pid, status, options); 178 179 if (tui_active) 180 { 181 /* TODO: need to refresh (optional). */ 182 } 183 return res; 184 } 185 186 /* The selected frame has changed. This is happens after a target 187 stop or when the user explicitly changes the frame 188 (up/down/thread/...). */ 189 static void 190 tui_selected_frame_level_changed_hook (int level) 191 { 192 struct frame_info *fi; 193 194 /* Negative level means that the selected frame was cleared. */ 195 if (level < 0) 196 return; 197 198 fi = get_selected_frame (NULL); 199 /* Ensure that symbols for this frame are read in. Also, determine 200 the source language of this frame, and switch to it if 201 desired. */ 202 if (fi) 203 { 204 struct symtab *s; 205 206 s = find_pc_symtab (get_frame_pc (fi)); 207 /* elz: This if here fixes the problem with the pc not being 208 displayed in the tui asm layout, with no debug symbols. The 209 value of s would be 0 here, and select_source_symtab would 210 abort the command by calling the 'error' function. */ 211 if (s) 212 select_source_symtab (s); 213 214 /* Display the frame position (even if there is no symbols). */ 215 tui_show_frame_info (fi); 216 217 /* Refresh the register window if it's visible. */ 218 if (tui_is_window_visible (DATA_WIN)) 219 { 220 tui_refreshing_registers = 1; 221 tui_check_data_values (fi); 222 tui_refreshing_registers = 0; 223 } 224 } 225 } 226 227 /* Called from print_frame_info to list the line we stopped in. */ 228 static void 229 tui_print_frame_info_listing_hook (struct symtab *s, 230 int line, 231 int stopline, 232 int noerror) 233 { 234 select_source_symtab (s); 235 tui_show_frame_info (get_selected_frame (NULL)); 236 } 237 238 /* Called when the target process died or is detached. 239 Update the status line. */ 240 static void 241 tui_detach_hook (void) 242 { 243 tui_show_frame_info (0); 244 tui_display_main (); 245 } 246 247 /* Observers created when installing TUI hooks. */ 248 static struct observer *tui_bp_created_observer; 249 static struct observer *tui_bp_deleted_observer; 250 static struct observer *tui_bp_modified_observer; 251 252 /* Install the TUI specific hooks. */ 253 void 254 tui_install_hooks (void) 255 { 256 deprecated_target_wait_hook = tui_target_wait_hook; 257 deprecated_selected_frame_level_changed_hook = tui_selected_frame_level_changed_hook; 258 deprecated_print_frame_info_listing_hook = tui_print_frame_info_listing_hook; 259 260 deprecated_query_hook = tui_query_hook; 261 262 /* Install the event hooks. */ 263 tui_bp_created_observer 264 = observer_attach_breakpoint_created (tui_event_create_breakpoint); 265 tui_bp_deleted_observer 266 = observer_attach_breakpoint_deleted (tui_event_delete_breakpoint); 267 tui_bp_modified_observer 268 = observer_attach_breakpoint_modified (tui_event_modify_breakpoint); 269 270 deprecated_register_changed_hook = tui_register_changed_hook; 271 deprecated_detach_hook = tui_detach_hook; 272 } 273 274 /* Remove the TUI specific hooks. */ 275 void 276 tui_remove_hooks (void) 277 { 278 deprecated_target_wait_hook = 0; 279 deprecated_selected_frame_level_changed_hook = 0; 280 deprecated_print_frame_info_listing_hook = 0; 281 deprecated_query_hook = 0; 282 deprecated_register_changed_hook = 0; 283 deprecated_detach_hook = 0; 284 285 /* Remove our observers. */ 286 observer_detach_breakpoint_created (tui_bp_created_observer); 287 tui_bp_created_observer = NULL; 288 observer_detach_breakpoint_deleted (tui_bp_deleted_observer); 289 tui_bp_deleted_observer = NULL; 290 observer_detach_breakpoint_modified (tui_bp_modified_observer); 291 tui_bp_modified_observer = NULL; 292 } 293 294 void _initialize_tui_hooks (void); 295 296 void 297 _initialize_tui_hooks (void) 298 { 299 /* Install the permanent hooks. */ 300 observer_attach_new_objfile (tui_new_objfile_hook); 301 } 302