| 1 | /* General functions for the WDB TUI. |
| 2 | |
| 3 | Copyright 1998, 1999, 2000, 2001, 2002 Free Software Foundation, |
| 4 | Inc. |
| 5 | |
| 6 | Contributed by Hewlett-Packard Company. |
| 7 | |
| 8 | This file is part of GDB. |
| 9 | |
| 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 2 of the License, or |
| 13 | (at your option) any later version. |
| 14 | |
| 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. |
| 19 | |
| 20 | You should have received a copy of the GNU General Public License |
| 21 | along with this program; if not, write to the Free Software |
| 22 | Foundation, Inc., 59 Temple Place - Suite 330, |
| 23 | Boston, MA 02111-1307, USA. */ |
| 24 | |
| 25 | /* FIXME: cagney/2002-02-28: The GDB coding standard indicates that |
| 26 | "defs.h" should be included first. Unfortunatly some systems |
| 27 | (currently Debian GNU/Linux) include the <stdbool.h> via <curses.h> |
| 28 | and they clash with "bfd.h"'s definiton of true/false. The correct |
| 29 | fix is to remove true/false from "bfd.h", however, until that |
| 30 | happens, hack around it by including "config.h" and <curses.h> |
| 31 | first. */ |
| 32 | |
| 33 | #include "config.h" |
| 34 | #ifdef HAVE_NCURSES_H |
| 35 | #include <ncurses.h> |
| 36 | #else |
| 37 | #ifdef HAVE_CURSES_H |
| 38 | #include <curses.h> |
| 39 | #endif |
| 40 | #endif |
| 41 | |
| 42 | #include <stdio.h> |
| 43 | #include <stdlib.h> |
| 44 | #include <ctype.h> |
| 45 | #include <malloc.h> |
| 46 | #ifdef HAVE_TERM_H |
| 47 | #include <term.h> |
| 48 | #endif |
| 49 | #include <signal.h> |
| 50 | #include <fcntl.h> |
| 51 | #include <termio.h> |
| 52 | #include <setjmp.h> |
| 53 | #include "defs.h" |
| 54 | #include "gdbcmd.h" |
| 55 | #include "tui.h" |
| 56 | #include "tuiData.h" |
| 57 | #include "tuiLayout.h" |
| 58 | #include "tuiIO.h" |
| 59 | #include "tuiRegs.h" |
| 60 | #include "tuiStack.h" |
| 61 | #include "tuiWin.h" |
| 62 | #include "tuiSourceWin.h" |
| 63 | #include "readline/readline.h" |
| 64 | #include "target.h" |
| 65 | #include "frame.h" |
| 66 | #include "breakpoint.h" |
| 67 | #include "inferior.h" |
| 68 | |
| 69 | /* Tells whether the TUI is active or not. */ |
| 70 | int tui_active = 0; |
| 71 | static int tui_finish_init = 1; |
| 72 | |
| 73 | /* Switch the output mode between TUI/standard gdb. */ |
| 74 | static int |
| 75 | tui_switch_mode (void) |
| 76 | { |
| 77 | if (tui_active) |
| 78 | { |
| 79 | tui_disable (); |
| 80 | rl_prep_terminal (0); |
| 81 | |
| 82 | printf_filtered ("Left the TUI mode\n"); |
| 83 | } |
| 84 | else |
| 85 | { |
| 86 | rl_deprep_terminal (); |
| 87 | tui_enable (); |
| 88 | printf_filtered ("Entered the TUI mode\n"); |
| 89 | } |
| 90 | |
| 91 | /* Clear the readline in case switching occurred in middle of something. */ |
| 92 | if (rl_end) |
| 93 | rl_kill_text (0, rl_end); |
| 94 | |
| 95 | /* Since we left the curses mode, the terminal mode is restored to |
| 96 | some previous state. That state may not be suitable for readline |
| 97 | to work correctly (it may be restored in line mode). We force an |
| 98 | exit of the current readline so that readline is re-entered and it |
| 99 | will be able to setup the terminal for its needs. By re-entering |
| 100 | in readline, we also redisplay its prompt in the non-curses mode. */ |
| 101 | rl_newline (1, '\n'); |
| 102 | |
| 103 | /* Make sure the \n we are returning does not repeat the last command. */ |
| 104 | dont_repeat (); |
| 105 | return 0; |
| 106 | } |
| 107 | |
| 108 | /* Change the TUI layout to show a next layout. |
| 109 | This function is bound to CTRL-X 2. It is intended to provide |
| 110 | a functionality close to the Emacs split-window command. We always |
| 111 | show two windows (src+asm), (src+regs) or (asm+regs). */ |
| 112 | static int |
| 113 | tui_change_windows (void) |
| 114 | { |
| 115 | if (!tui_active) |
| 116 | tui_switch_mode (); |
| 117 | |
| 118 | if (tui_active) |
| 119 | { |
| 120 | TuiLayoutType new_layout; |
| 121 | TuiRegisterDisplayType regs_type = TUI_UNDEFINED_REGS; |
| 122 | |
| 123 | new_layout = currentLayout (); |
| 124 | |
| 125 | /* Select a new layout to have a rolling layout behavior |
| 126 | with always two windows (except when undefined). */ |
| 127 | switch (new_layout) |
| 128 | { |
| 129 | case SRC_COMMAND: |
| 130 | new_layout = SRC_DISASSEM_COMMAND; |
| 131 | break; |
| 132 | |
| 133 | case DISASSEM_COMMAND: |
| 134 | new_layout = SRC_DISASSEM_COMMAND; |
| 135 | break; |
| 136 | |
| 137 | case SRC_DATA_COMMAND: |
| 138 | new_layout = SRC_DISASSEM_COMMAND; |
| 139 | break; |
| 140 | |
| 141 | case SRC_DISASSEM_COMMAND: |
| 142 | new_layout = DISASSEM_DATA_COMMAND; |
| 143 | break; |
| 144 | |
| 145 | case DISASSEM_DATA_COMMAND: |
| 146 | new_layout = SRC_DATA_COMMAND; |
| 147 | break; |
| 148 | |
| 149 | default: |
| 150 | new_layout = SRC_COMMAND; |
| 151 | break; |
| 152 | } |
| 153 | tuiSetLayout (new_layout, regs_type); |
| 154 | } |
| 155 | return 0; |
| 156 | } |
| 157 | |
| 158 | |
| 159 | /* Delete the second TUI window to only show one. */ |
| 160 | static int |
| 161 | tui_delete_other_windows (void) |
| 162 | { |
| 163 | if (!tui_active) |
| 164 | tui_switch_mode (); |
| 165 | |
| 166 | if (tui_active) |
| 167 | { |
| 168 | TuiLayoutType new_layout; |
| 169 | TuiRegisterDisplayType regs_type = TUI_UNDEFINED_REGS; |
| 170 | |
| 171 | new_layout = currentLayout (); |
| 172 | |
| 173 | /* Kill one window. */ |
| 174 | switch (new_layout) |
| 175 | { |
| 176 | case SRC_COMMAND: |
| 177 | case SRC_DATA_COMMAND: |
| 178 | case SRC_DISASSEM_COMMAND: |
| 179 | default: |
| 180 | new_layout = SRC_COMMAND; |
| 181 | break; |
| 182 | |
| 183 | case DISASSEM_COMMAND: |
| 184 | case DISASSEM_DATA_COMMAND: |
| 185 | new_layout = DISASSEM_COMMAND; |
| 186 | break; |
| 187 | } |
| 188 | tuiSetLayout (new_layout, regs_type); |
| 189 | } |
| 190 | return 0; |
| 191 | } |
| 192 | |
| 193 | /* Initialize readline and configure the keymap for the switching |
| 194 | key shortcut. */ |
| 195 | void |
| 196 | tui_initialize_readline () |
| 197 | { |
| 198 | rl_initialize (); |
| 199 | |
| 200 | rl_add_defun ("tui-switch-mode", tui_switch_mode, -1); |
| 201 | rl_bind_key_in_map ('a', tui_switch_mode, emacs_ctlx_keymap); |
| 202 | rl_bind_key_in_map ('A', tui_switch_mode, emacs_ctlx_keymap); |
| 203 | rl_bind_key_in_map (CTRL ('A'), tui_switch_mode, emacs_ctlx_keymap); |
| 204 | rl_bind_key_in_map ('1', tui_delete_other_windows, emacs_ctlx_keymap); |
| 205 | rl_bind_key_in_map ('2', tui_change_windows, emacs_ctlx_keymap); |
| 206 | } |
| 207 | |
| 208 | /* Enter in the tui mode (curses). |
| 209 | When in normal mode, it installs the tui hooks in gdb, redirects |
| 210 | the gdb output, configures the readline to work in tui mode. |
| 211 | When in curses mode, it does nothing. */ |
| 212 | void |
| 213 | tui_enable (void) |
| 214 | { |
| 215 | if (tui_active) |
| 216 | return; |
| 217 | |
| 218 | /* To avoid to initialize curses when gdb starts, there is a defered |
| 219 | curses initialization. This initialization is made only once |
| 220 | and the first time the curses mode is entered. */ |
| 221 | if (tui_finish_init) |
| 222 | { |
| 223 | WINDOW *w; |
| 224 | |
| 225 | w = initscr (); |
| 226 | |
| 227 | cbreak (); |
| 228 | noecho (); |
| 229 | /*timeout (1);*/ |
| 230 | nodelay(w, FALSE); |
| 231 | nl(); |
| 232 | keypad (w, TRUE); |
| 233 | rl_initialize (); |
| 234 | setTermHeightTo (LINES); |
| 235 | setTermWidthTo (COLS); |
| 236 | def_prog_mode (); |
| 237 | |
| 238 | tuiSetLocatorContent (0); |
| 239 | showLayout (SRC_COMMAND); |
| 240 | tuiSetWinFocusTo (srcWin); |
| 241 | keypad (cmdWin->generic.handle, TRUE); |
| 242 | wrefresh (cmdWin->generic.handle); |
| 243 | tui_finish_init = 0; |
| 244 | } |
| 245 | else |
| 246 | { |
| 247 | /* Save the current gdb setting of the terminal. |
| 248 | Curses will restore this state when endwin() is called. */ |
| 249 | def_shell_mode (); |
| 250 | clearok (stdscr, TRUE); |
| 251 | } |
| 252 | |
| 253 | /* Install the TUI specific hooks. */ |
| 254 | tui_install_hooks (); |
| 255 | |
| 256 | tui_update_variables (); |
| 257 | |
| 258 | tui_setup_io (1); |
| 259 | |
| 260 | tui_version = 1; |
| 261 | tui_active = 1; |
| 262 | refresh (); |
| 263 | } |
| 264 | |
| 265 | /* Leave the tui mode. |
| 266 | Remove the tui hooks and configure the gdb output and readline |
| 267 | back to their original state. The curses mode is left so that |
| 268 | the terminal setting is restored to the point when we entered. */ |
| 269 | void |
| 270 | tui_disable (void) |
| 271 | { |
| 272 | if (!tui_active) |
| 273 | return; |
| 274 | |
| 275 | /* Remove TUI hooks. */ |
| 276 | tui_remove_hooks (); |
| 277 | |
| 278 | /* Leave curses and restore previous gdb terminal setting. */ |
| 279 | endwin (); |
| 280 | |
| 281 | /* gdb terminal has changed, update gdb internal copy of it |
| 282 | so that terminal management with the inferior works. */ |
| 283 | tui_setup_io (0); |
| 284 | |
| 285 | tui_version = 0; |
| 286 | tui_active = 0; |
| 287 | } |
| 288 | |
| 289 | /* Wrapper on top of free() to ensure that input address |
| 290 | is greater than 0x0. */ |
| 291 | void |
| 292 | tuiFree (char *ptr) |
| 293 | { |
| 294 | if (ptr != (char *) NULL) |
| 295 | { |
| 296 | xfree (ptr); |
| 297 | } |
| 298 | } |
| 299 | |
| 300 | /* Determine what the low address will be to display in the TUI's |
| 301 | disassembly window. This may or may not be the same as the |
| 302 | low address input. */ |
| 303 | CORE_ADDR |
| 304 | tuiGetLowDisassemblyAddress (CORE_ADDR low, CORE_ADDR pc) |
| 305 | { |
| 306 | int line; |
| 307 | CORE_ADDR newLow; |
| 308 | |
| 309 | /* Determine where to start the disassembly so that the pc is about in the |
| 310 | middle of the viewport. */ |
| 311 | for (line = 0, newLow = pc; |
| 312 | (newLow > low && |
| 313 | line < (tuiDefaultWinViewportHeight (DISASSEM_WIN, |
| 314 | DISASSEM_COMMAND) / 2));) |
| 315 | { |
| 316 | bfd_byte buffer[4]; |
| 317 | |
| 318 | newLow -= sizeof (bfd_getb32 (buffer)); |
| 319 | line++; |
| 320 | } |
| 321 | |
| 322 | return newLow; |
| 323 | } |
| 324 | |
| 325 | void |
| 326 | strcat_to_buf (char *buf, int buflen, char *itemToAdd) |
| 327 | { |
| 328 | if (itemToAdd != (char *) NULL && buf != (char *) NULL) |
| 329 | { |
| 330 | if ((strlen (buf) + strlen (itemToAdd)) <= buflen) |
| 331 | strcat (buf, itemToAdd); |
| 332 | else |
| 333 | strncat (buf, itemToAdd, (buflen - strlen (buf))); |
| 334 | } |
| 335 | } |
| 336 | |
| 337 | #if 0 |
| 338 | /* Solaris <sys/termios.h> defines CTRL. */ |
| 339 | #ifndef CTRL |
| 340 | #define CTRL(x) (x & ~0140) |
| 341 | #endif |
| 342 | |
| 343 | #define FILEDES 2 |
| 344 | #define CHK(val, dft) (val<=0 ? dft : val) |
| 345 | |
| 346 | static void |
| 347 | _tuiReset (void) |
| 348 | { |
| 349 | struct termio mode; |
| 350 | |
| 351 | /* |
| 352 | ** reset the teletype mode bits to a sensible state. |
| 353 | ** Copied tset.c |
| 354 | */ |
| 355 | #if ! defined (USG) && defined (TIOCGETC) |
| 356 | struct tchars tbuf; |
| 357 | #endif /* !USG && TIOCGETC */ |
| 358 | #ifdef UCB_NTTY |
| 359 | struct ltchars ltc; |
| 360 | |
| 361 | if (ldisc == NTTYDISC) |
| 362 | { |
| 363 | ioctl (FILEDES, TIOCGLTC, <c); |
| 364 | ltc.t_suspc = CHK (ltc.t_suspc, CTRL ('Z')); |
| 365 | ltc.t_dsuspc = CHK (ltc.t_dsuspc, CTRL ('Y')); |
| 366 | ltc.t_rprntc = CHK (ltc.t_rprntc, CTRL ('R')); |
| 367 | ltc.t_flushc = CHK (ltc.t_flushc, CTRL ('O')); |
| 368 | ltc.t_werasc = CHK (ltc.t_werasc, CTRL ('W')); |
| 369 | ltc.t_lnextc = CHK (ltc.t_lnextc, CTRL ('V')); |
| 370 | ioctl (FILEDES, TIOCSLTC, <c); |
| 371 | } |
| 372 | #endif /* UCB_NTTY */ |
| 373 | #ifndef USG |
| 374 | #ifdef TIOCGETC |
| 375 | ioctl (FILEDES, TIOCGETC, &tbuf); |
| 376 | tbuf.t_intrc = CHK (tbuf.t_intrc, CTRL ('?')); |
| 377 | tbuf.t_quitc = CHK (tbuf.t_quitc, CTRL ('\\')); |
| 378 | tbuf.t_startc = CHK (tbuf.t_startc, CTRL ('Q')); |
| 379 | tbuf.t_stopc = CHK (tbuf.t_stopc, CTRL ('S')); |
| 380 | tbuf.t_eofc = CHK (tbuf.t_eofc, CTRL ('D')); |
| 381 | /* brkc is left alone */ |
| 382 | ioctl (FILEDES, TIOCSETC, &tbuf); |
| 383 | #endif /* TIOCGETC */ |
| 384 | mode.sg_flags &= ~(RAW |
| 385 | #ifdef CBREAK |
| 386 | | CBREAK |
| 387 | #endif /* CBREAK */ |
| 388 | | VTDELAY | ALLDELAY); |
| 389 | mode.sg_flags |= XTABS | ECHO | CRMOD | ANYP; |
| 390 | #else /*USG */ |
| 391 | ioctl (FILEDES, TCGETA, &mode); |
| 392 | mode.c_cc[VINTR] = CHK (mode.c_cc[VINTR], CTRL ('?')); |
| 393 | mode.c_cc[VQUIT] = CHK (mode.c_cc[VQUIT], CTRL ('\\')); |
| 394 | mode.c_cc[VEOF] = CHK (mode.c_cc[VEOF], CTRL ('D')); |
| 395 | |
| 396 | mode.c_iflag &= ~(IGNBRK | PARMRK | INPCK | INLCR | IGNCR | IUCLC | IXOFF); |
| 397 | mode.c_iflag |= (BRKINT | ISTRIP | ICRNL | IXON); |
| 398 | mode.c_oflag &= ~(OLCUC | OCRNL | ONOCR | ONLRET | OFILL | OFDEL | |
| 399 | NLDLY | CRDLY | TABDLY | BSDLY | VTDLY | FFDLY); |
| 400 | mode.c_oflag |= (OPOST | ONLCR); |
| 401 | mode.c_cflag &= ~(CSIZE | PARODD | CLOCAL); |
| 402 | #ifndef hp9000s800 |
| 403 | mode.c_cflag |= (CS8 | CREAD); |
| 404 | #else /*hp9000s800 */ |
| 405 | mode.c_cflag |= (CS8 | CSTOPB | CREAD); |
| 406 | #endif /* hp9000s800 */ |
| 407 | mode.c_lflag &= ~(XCASE | ECHONL | NOFLSH); |
| 408 | mode.c_lflag |= (ISIG | ICANON | ECHO | ECHOK); |
| 409 | ioctl (FILEDES, TCSETAW, &mode); |
| 410 | #endif /* USG */ |
| 411 | |
| 412 | return; |
| 413 | } /* _tuiReset */ |
| 414 | #endif |
| 415 | |
| 416 | void |
| 417 | tui_show_source (const char *file, int line) |
| 418 | { |
| 419 | /* make sure that the source window is displayed */ |
| 420 | tuiAddWinToLayout (SRC_WIN); |
| 421 | |
| 422 | tuiUpdateSourceWindowsWithLine (current_source_symtab, line); |
| 423 | tuiUpdateLocatorFilename (file); |
| 424 | } |
| 425 | |
| 426 | void |
| 427 | tui_show_assembly (CORE_ADDR addr) |
| 428 | { |
| 429 | tuiAddWinToLayout (DISASSEM_WIN); |
| 430 | tuiUpdateSourceWindowsWithAddr (addr); |
| 431 | } |
| 432 | |
| 433 | int |
| 434 | tui_is_window_visible (TuiWinType type) |
| 435 | { |
| 436 | if (tui_version == 0) |
| 437 | return 0; |
| 438 | |
| 439 | if (winList[type] == 0) |
| 440 | return 0; |
| 441 | |
| 442 | return winList[type]->generic.isVisible; |
| 443 | } |
| 444 | |
| 445 | int |
| 446 | tui_get_command_dimension (int *width, int *height) |
| 447 | { |
| 448 | if (!tui_version || !m_winPtrNotNull (cmdWin)) |
| 449 | { |
| 450 | return 0; |
| 451 | } |
| 452 | |
| 453 | *width = cmdWin->generic.width; |
| 454 | *height = cmdWin->generic.height; |
| 455 | return 1; |
| 456 | } |