| 1 | /* GDB hooks for TUI. |
| 2 | |
| 3 | Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 |
| 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) |
| 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); |
| 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 | } |