| 1 | /* Tcl/Tk interface routines. |
| 2 | Copyright 1994, 1995, 1996 Free Software Foundation, Inc. |
| 3 | |
| 4 | Written by Stu Grossman <grossman@cygnus.com> of Cygnus Support. |
| 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 2 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, write to the Free Software |
| 20 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
| 21 | |
| 22 | #include "defs.h" |
| 23 | #include "symtab.h" |
| 24 | #include "inferior.h" |
| 25 | #include "command.h" |
| 26 | #include "bfd.h" |
| 27 | #include "symfile.h" |
| 28 | #include "objfiles.h" |
| 29 | #include "target.h" |
| 30 | #include <tcl.h> |
| 31 | #include <tk.h> |
| 32 | #ifdef ANSI_PROTOTYPES |
| 33 | #include <stdarg.h> |
| 34 | #else |
| 35 | #include <varargs.h> |
| 36 | #endif |
| 37 | #include <signal.h> |
| 38 | #include <fcntl.h> |
| 39 | #include <unistd.h> |
| 40 | #include <setjmp.h> |
| 41 | #include "top.h" |
| 42 | #include <sys/ioctl.h> |
| 43 | #include "gdb_string.h" |
| 44 | #include "dis-asm.h" |
| 45 | #include <stdio.h> |
| 46 | #include "gdbcmd.h" |
| 47 | |
| 48 | #ifndef FIOASYNC |
| 49 | #include <sys/stropts.h> |
| 50 | #endif |
| 51 | |
| 52 | /* Some versions (1.3.79, 1.3.81) of Linux don't support SIOCSPGRP the way |
| 53 | gdbtk wants to use it... */ |
| 54 | #ifdef __linux__ |
| 55 | #undef SIOCSPGRP |
| 56 | #endif |
| 57 | |
| 58 | static void null_routine PARAMS ((int)); |
| 59 | static void gdbtk_flush PARAMS ((FILE *)); |
| 60 | static void gdbtk_fputs PARAMS ((const char *, FILE *)); |
| 61 | static int gdbtk_query PARAMS ((const char *, va_list)); |
| 62 | static char *gdbtk_readline PARAMS ((char *)); |
| 63 | static void gdbtk_init PARAMS ((void)); |
| 64 | static void tk_command_loop PARAMS ((void)); |
| 65 | static void gdbtk_call_command PARAMS ((struct cmd_list_element *, char *, int)); |
| 66 | static int gdbtk_wait PARAMS ((int, struct target_waitstatus *)); |
| 67 | static void x_event PARAMS ((int)); |
| 68 | static void gdbtk_interactive PARAMS ((void)); |
| 69 | static void cleanup_init PARAMS ((int)); |
| 70 | static void tk_command PARAMS ((char *, int)); |
| 71 | static int gdb_disassemble PARAMS ((ClientData, Tcl_Interp *, int, char *[])); |
| 72 | static int compare_lines PARAMS ((const PTR, const PTR)); |
| 73 | static int gdbtk_dis_asm_read_memory PARAMS ((bfd_vma, bfd_byte *, int, disassemble_info *)); |
| 74 | static int gdb_stop PARAMS ((ClientData, Tcl_Interp *, int, char *[])); |
| 75 | static int gdb_listfiles PARAMS ((ClientData, Tcl_Interp *, int, char *[])); |
| 76 | static int call_wrapper PARAMS ((ClientData, Tcl_Interp *, int, char *[])); |
| 77 | static int gdb_cmd PARAMS ((ClientData, Tcl_Interp *, int, char *argv[])); |
| 78 | static int gdb_fetch_registers PARAMS ((ClientData, Tcl_Interp *, int, char *[])); |
| 79 | static void gdbtk_readline_end PARAMS ((void)); |
| 80 | static int gdb_changed_register_list PARAMS ((ClientData, Tcl_Interp *, int, char *[])); |
| 81 | static void register_changed_p PARAMS ((int, void *)); |
| 82 | static int gdb_get_breakpoint_list PARAMS ((ClientData, Tcl_Interp *, int, char *[])); |
| 83 | static int gdb_get_breakpoint_info PARAMS ((ClientData, Tcl_Interp *, int, char *[])); |
| 84 | static void breakpoint_notify PARAMS ((struct breakpoint *, const char *)); |
| 85 | static void gdbtk_create_breakpoint PARAMS ((struct breakpoint *)); |
| 86 | static void gdbtk_delete_breakpoint PARAMS ((struct breakpoint *)); |
| 87 | static void gdbtk_modify_breakpoint PARAMS ((struct breakpoint *)); |
| 88 | static int gdb_loc PARAMS ((ClientData, Tcl_Interp *, int, char *[])); |
| 89 | static int gdb_eval PARAMS ((ClientData, Tcl_Interp *, int, char *[])); |
| 90 | static int gdb_sourcelines PARAMS ((ClientData, Tcl_Interp *, int, char *[])); |
| 91 | static int map_arg_registers PARAMS ((int, char *[], void (*) (int, void *), void *)); |
| 92 | static void get_register_name PARAMS ((int, void *)); |
| 93 | static int gdb_regnames PARAMS ((ClientData, Tcl_Interp *, int, char *[])); |
| 94 | static void get_register PARAMS ((int, void *)); |
| 95 | |
| 96 | /* Handle for TCL interpreter */ |
| 97 | |
| 98 | static Tcl_Interp *interp = NULL; |
| 99 | |
| 100 | static int x_fd; /* X network socket */ |
| 101 | |
| 102 | /* This variable is true when the inferior is running. Although it's |
| 103 | possible to disable most input from widgets and thus prevent |
| 104 | attempts to do anything while the inferior is running, any commands |
| 105 | that get through - even a simple memory read - are Very Bad, and |
| 106 | may cause GDB to crash or behave strangely. So, this variable |
| 107 | provides an extra layer of defense. */ |
| 108 | |
| 109 | static int running_now; |
| 110 | |
| 111 | /* This variable determines where memory used for disassembly is read from. |
| 112 | If > 0, then disassembly comes from the exec file rather than the |
| 113 | target (which might be at the other end of a slow serial link). If |
| 114 | == 0 then disassembly comes from target. If < 0 disassembly is |
| 115 | automatically switched to the target if it's an inferior process, |
| 116 | otherwise the exec file is used. */ |
| 117 | |
| 118 | static int disassemble_from_exec = -1; |
| 119 | |
| 120 | /* Supply malloc calls for tcl/tk. */ |
| 121 | |
| 122 | char * |
| 123 | Tcl_Alloc (size) |
| 124 | unsigned int size; |
| 125 | { |
| 126 | return xmalloc (size); |
| 127 | } |
| 128 | |
| 129 | char * |
| 130 | Tcl_Realloc (ptr, size) |
| 131 | char *ptr; |
| 132 | unsigned int size; |
| 133 | { |
| 134 | return xrealloc (ptr, size); |
| 135 | } |
| 136 | |
| 137 | void |
| 138 | Tcl_Free(ptr) |
| 139 | char *ptr; |
| 140 | { |
| 141 | free (ptr); |
| 142 | } |
| 143 | |
| 144 | static void |
| 145 | null_routine(arg) |
| 146 | int arg; |
| 147 | { |
| 148 | } |
| 149 | |
| 150 | /* The following routines deal with stdout/stderr data, which is created by |
| 151 | {f}printf_{un}filtered and friends. gdbtk_fputs and gdbtk_flush are the |
| 152 | lowest level of these routines and capture all output from the rest of GDB. |
| 153 | Normally they present their data to tcl via callbacks to the following tcl |
| 154 | routines: gdbtk_tcl_fputs, gdbtk_tcl_fputs_error, and gdbtk_flush. These |
| 155 | in turn call tk routines to update the display. |
| 156 | |
| 157 | Under some circumstances, you may want to collect the output so that it can |
| 158 | be returned as the value of a tcl procedure. This can be done by |
| 159 | surrounding the output routines with calls to start_saving_output and |
| 160 | finish_saving_output. The saved data can then be retrieved with |
| 161 | get_saved_output (but this must be done before the call to |
| 162 | finish_saving_output). */ |
| 163 | |
| 164 | /* Dynamic string header for stdout. */ |
| 165 | |
| 166 | static Tcl_DString *result_ptr; |
| 167 | \f |
| 168 | static void |
| 169 | gdbtk_flush (stream) |
| 170 | FILE *stream; |
| 171 | { |
| 172 | #if 0 |
| 173 | /* Force immediate screen update */ |
| 174 | |
| 175 | Tcl_VarEval (interp, "gdbtk_tcl_flush", NULL); |
| 176 | #endif |
| 177 | } |
| 178 | |
| 179 | static void |
| 180 | gdbtk_fputs (ptr, stream) |
| 181 | const char *ptr; |
| 182 | FILE *stream; |
| 183 | { |
| 184 | |
| 185 | if (result_ptr) |
| 186 | Tcl_DStringAppend (result_ptr, (char *)ptr, -1); |
| 187 | else |
| 188 | { |
| 189 | Tcl_DString str; |
| 190 | |
| 191 | Tcl_DStringInit (&str); |
| 192 | |
| 193 | Tcl_DStringAppend (&str, "gdbtk_tcl_fputs", -1); |
| 194 | Tcl_DStringAppendElement (&str, (char *)ptr); |
| 195 | |
| 196 | Tcl_Eval (interp, Tcl_DStringValue (&str)); |
| 197 | Tcl_DStringFree (&str); |
| 198 | } |
| 199 | } |
| 200 | |
| 201 | static int |
| 202 | gdbtk_query (query, args) |
| 203 | const char *query; |
| 204 | va_list args; |
| 205 | { |
| 206 | char buf[200], *merge[2]; |
| 207 | char *command; |
| 208 | long val; |
| 209 | |
| 210 | vsprintf (buf, query, args); |
| 211 | merge[0] = "gdbtk_tcl_query"; |
| 212 | merge[1] = buf; |
| 213 | command = Tcl_Merge (2, merge); |
| 214 | Tcl_Eval (interp, command); |
| 215 | free (command); |
| 216 | |
| 217 | val = atol (interp->result); |
| 218 | return val; |
| 219 | } |
| 220 | |
| 221 | /* VARARGS */ |
| 222 | static void |
| 223 | #ifdef ANSI_PROTOTYPES |
| 224 | gdbtk_readline_begin (char *format, ...) |
| 225 | #else |
| 226 | gdbtk_readline_begin (va_alist) |
| 227 | va_dcl |
| 228 | #endif |
| 229 | { |
| 230 | va_list args; |
| 231 | char buf[200], *merge[2]; |
| 232 | char *command; |
| 233 | |
| 234 | #ifdef ANSI_PROTOTYPES |
| 235 | va_start (args, format); |
| 236 | #else |
| 237 | char *format; |
| 238 | va_start (args); |
| 239 | format = va_arg (args, char *); |
| 240 | #endif |
| 241 | |
| 242 | vsprintf (buf, format, args); |
| 243 | merge[0] = "gdbtk_tcl_readline_begin"; |
| 244 | merge[1] = buf; |
| 245 | command = Tcl_Merge (2, merge); |
| 246 | Tcl_Eval (interp, command); |
| 247 | free (command); |
| 248 | } |
| 249 | |
| 250 | static char * |
| 251 | gdbtk_readline (prompt) |
| 252 | char *prompt; |
| 253 | { |
| 254 | char *merge[2]; |
| 255 | char *command; |
| 256 | int result; |
| 257 | |
| 258 | merge[0] = "gdbtk_tcl_readline"; |
| 259 | merge[1] = prompt; |
| 260 | command = Tcl_Merge (2, merge); |
| 261 | result = Tcl_Eval (interp, command); |
| 262 | free (command); |
| 263 | if (result == TCL_OK) |
| 264 | { |
| 265 | return (strdup (interp -> result)); |
| 266 | } |
| 267 | else |
| 268 | { |
| 269 | gdbtk_fputs (interp -> result, gdb_stdout); |
| 270 | gdbtk_fputs ("\n", gdb_stdout); |
| 271 | return (NULL); |
| 272 | } |
| 273 | } |
| 274 | |
| 275 | static void |
| 276 | gdbtk_readline_end () |
| 277 | { |
| 278 | Tcl_Eval (interp, "gdbtk_tcl_readline_end"); |
| 279 | } |
| 280 | |
| 281 | \f |
| 282 | static void |
| 283 | #ifdef ANSI_PROTOTYPES |
| 284 | dsprintf_append_element (Tcl_DString *dsp, char *format, ...) |
| 285 | #else |
| 286 | dsprintf_append_element (va_alist) |
| 287 | va_dcl |
| 288 | #endif |
| 289 | { |
| 290 | va_list args; |
| 291 | char buf[1024]; |
| 292 | |
| 293 | #ifdef ANSI_PROTOTYPES |
| 294 | va_start (args, format); |
| 295 | #else |
| 296 | Tcl_DString *dsp; |
| 297 | char *format; |
| 298 | |
| 299 | va_start (args); |
| 300 | dsp = va_arg (args, Tcl_DString *); |
| 301 | format = va_arg (args, char *); |
| 302 | #endif |
| 303 | |
| 304 | vsprintf (buf, format, args); |
| 305 | |
| 306 | Tcl_DStringAppendElement (dsp, buf); |
| 307 | } |
| 308 | |
| 309 | static int |
| 310 | gdb_get_breakpoint_list (clientData, interp, argc, argv) |
| 311 | ClientData clientData; |
| 312 | Tcl_Interp *interp; |
| 313 | int argc; |
| 314 | char *argv[]; |
| 315 | { |
| 316 | struct breakpoint *b; |
| 317 | extern struct breakpoint *breakpoint_chain; |
| 318 | |
| 319 | if (argc != 1) |
| 320 | error ("wrong # args"); |
| 321 | |
| 322 | for (b = breakpoint_chain; b; b = b->next) |
| 323 | if (b->type == bp_breakpoint) |
| 324 | dsprintf_append_element (result_ptr, "%d", b->number); |
| 325 | |
| 326 | return TCL_OK; |
| 327 | } |
| 328 | |
| 329 | static int |
| 330 | gdb_get_breakpoint_info (clientData, interp, argc, argv) |
| 331 | ClientData clientData; |
| 332 | Tcl_Interp *interp; |
| 333 | int argc; |
| 334 | char *argv[]; |
| 335 | { |
| 336 | struct symtab_and_line sal; |
| 337 | static char *bptypes[] = {"breakpoint", "hardware breakpoint", "until", |
| 338 | "finish", "watchpoint", "hardware watchpoint", |
| 339 | "read watchpoint", "access watchpoint", |
| 340 | "longjmp", "longjmp resume", "step resume", |
| 341 | "through sigtramp", "watchpoint scope", |
| 342 | "call dummy" }; |
| 343 | static char *bpdisp[] = {"delete", "disable", "donttouch"}; |
| 344 | struct command_line *cmd; |
| 345 | int bpnum; |
| 346 | struct breakpoint *b; |
| 347 | extern struct breakpoint *breakpoint_chain; |
| 348 | |
| 349 | if (argc != 2) |
| 350 | error ("wrong # args"); |
| 351 | |
| 352 | bpnum = atoi (argv[1]); |
| 353 | |
| 354 | for (b = breakpoint_chain; b; b = b->next) |
| 355 | if (b->number == bpnum) |
| 356 | break; |
| 357 | |
| 358 | if (!b || b->type != bp_breakpoint) |
| 359 | error ("Breakpoint #%d does not exist", bpnum); |
| 360 | |
| 361 | sal = find_pc_line (b->address, 0); |
| 362 | |
| 363 | Tcl_DStringAppendElement (result_ptr, symtab_to_filename (sal.symtab)); |
| 364 | dsprintf_append_element (result_ptr, "%d", sal.line); |
| 365 | dsprintf_append_element (result_ptr, "0x%lx", b->address); |
| 366 | Tcl_DStringAppendElement (result_ptr, bptypes[b->type]); |
| 367 | Tcl_DStringAppendElement (result_ptr, b->enable == enabled ? "1" : "0"); |
| 368 | Tcl_DStringAppendElement (result_ptr, bpdisp[b->disposition]); |
| 369 | dsprintf_append_element (result_ptr, "%d", b->silent); |
| 370 | dsprintf_append_element (result_ptr, "%d", b->ignore_count); |
| 371 | |
| 372 | Tcl_DStringStartSublist (result_ptr); |
| 373 | for (cmd = b->commands; cmd; cmd = cmd->next) |
| 374 | Tcl_DStringAppendElement (result_ptr, cmd->line); |
| 375 | Tcl_DStringEndSublist (result_ptr); |
| 376 | |
| 377 | Tcl_DStringAppendElement (result_ptr, b->cond_string); |
| 378 | |
| 379 | dsprintf_append_element (result_ptr, "%d", b->thread); |
| 380 | dsprintf_append_element (result_ptr, "%d", b->hit_count); |
| 381 | |
| 382 | return TCL_OK; |
| 383 | } |
| 384 | |
| 385 | static void |
| 386 | breakpoint_notify(b, action) |
| 387 | struct breakpoint *b; |
| 388 | const char *action; |
| 389 | { |
| 390 | char buf[100]; |
| 391 | int v; |
| 392 | |
| 393 | if (b->type != bp_breakpoint) |
| 394 | return; |
| 395 | |
| 396 | /* We ensure that ACTION contains no special Tcl characters, so we |
| 397 | can do this. */ |
| 398 | sprintf (buf, "gdbtk_tcl_breakpoint %s %d", action, b->number); |
| 399 | |
| 400 | v = Tcl_Eval (interp, buf); |
| 401 | |
| 402 | if (v != TCL_OK) |
| 403 | { |
| 404 | gdbtk_fputs (interp->result, gdb_stdout); |
| 405 | gdbtk_fputs ("\n", gdb_stdout); |
| 406 | } |
| 407 | } |
| 408 | |
| 409 | static void |
| 410 | gdbtk_create_breakpoint(b) |
| 411 | struct breakpoint *b; |
| 412 | { |
| 413 | breakpoint_notify (b, "create"); |
| 414 | } |
| 415 | |
| 416 | static void |
| 417 | gdbtk_delete_breakpoint(b) |
| 418 | struct breakpoint *b; |
| 419 | { |
| 420 | breakpoint_notify (b, "delete"); |
| 421 | } |
| 422 | |
| 423 | static void |
| 424 | gdbtk_modify_breakpoint(b) |
| 425 | struct breakpoint *b; |
| 426 | { |
| 427 | breakpoint_notify (b, "modify"); |
| 428 | } |
| 429 | \f |
| 430 | /* This implements the TCL command `gdb_loc', which returns a list consisting |
| 431 | of the source and line number associated with the current pc. */ |
| 432 | |
| 433 | static int |
| 434 | gdb_loc (clientData, interp, argc, argv) |
| 435 | ClientData clientData; |
| 436 | Tcl_Interp *interp; |
| 437 | int argc; |
| 438 | char *argv[]; |
| 439 | { |
| 440 | char *filename; |
| 441 | struct symtab_and_line sal; |
| 442 | char *funcname; |
| 443 | CORE_ADDR pc; |
| 444 | |
| 445 | if (argc == 1) |
| 446 | { |
| 447 | pc = selected_frame ? selected_frame->pc : stop_pc; |
| 448 | sal = find_pc_line (pc, 0); |
| 449 | } |
| 450 | else if (argc == 2) |
| 451 | { |
| 452 | struct symtabs_and_lines sals; |
| 453 | int nelts; |
| 454 | |
| 455 | sals = decode_line_spec (argv[1], 1); |
| 456 | |
| 457 | nelts = sals.nelts; |
| 458 | sal = sals.sals[0]; |
| 459 | free (sals.sals); |
| 460 | |
| 461 | if (sals.nelts != 1) |
| 462 | error ("Ambiguous line spec"); |
| 463 | |
| 464 | pc = sal.pc; |
| 465 | } |
| 466 | else |
| 467 | error ("wrong # args"); |
| 468 | |
| 469 | if (sal.symtab) |
| 470 | Tcl_DStringAppendElement (result_ptr, sal.symtab->filename); |
| 471 | else |
| 472 | Tcl_DStringAppendElement (result_ptr, ""); |
| 473 | |
| 474 | find_pc_partial_function (pc, &funcname, NULL, NULL); |
| 475 | Tcl_DStringAppendElement (result_ptr, funcname); |
| 476 | |
| 477 | filename = symtab_to_filename (sal.symtab); |
| 478 | Tcl_DStringAppendElement (result_ptr, filename); |
| 479 | |
| 480 | dsprintf_append_element (result_ptr, "%d", sal.line); /* line number */ |
| 481 | |
| 482 | dsprintf_append_element (result_ptr, "0x%s", paddr_nz(pc)); /* PC */ |
| 483 | |
| 484 | return TCL_OK; |
| 485 | } |
| 486 | \f |
| 487 | /* This implements the TCL command `gdb_eval'. */ |
| 488 | |
| 489 | static int |
| 490 | gdb_eval (clientData, interp, argc, argv) |
| 491 | ClientData clientData; |
| 492 | Tcl_Interp *interp; |
| 493 | int argc; |
| 494 | char *argv[]; |
| 495 | { |
| 496 | struct expression *expr; |
| 497 | struct cleanup *old_chain; |
| 498 | value_ptr val; |
| 499 | |
| 500 | if (argc != 2) |
| 501 | error ("wrong # args"); |
| 502 | |
| 503 | expr = parse_expression (argv[1]); |
| 504 | |
| 505 | old_chain = make_cleanup (free_current_contents, &expr); |
| 506 | |
| 507 | val = evaluate_expression (expr); |
| 508 | |
| 509 | val_print (VALUE_TYPE (val), VALUE_CONTENTS (val), VALUE_ADDRESS (val), |
| 510 | gdb_stdout, 0, 0, 0, 0); |
| 511 | |
| 512 | do_cleanups (old_chain); |
| 513 | |
| 514 | return TCL_OK; |
| 515 | } |
| 516 | \f |
| 517 | /* This implements the TCL command `gdb_sourcelines', which returns a list of |
| 518 | all of the lines containing executable code for the specified source file |
| 519 | (ie: lines where you can put breakpoints). */ |
| 520 | |
| 521 | static int |
| 522 | gdb_sourcelines (clientData, interp, argc, argv) |
| 523 | ClientData clientData; |
| 524 | Tcl_Interp *interp; |
| 525 | int argc; |
| 526 | char *argv[]; |
| 527 | { |
| 528 | struct symtab *symtab; |
| 529 | struct linetable_entry *le; |
| 530 | int nlines; |
| 531 | |
| 532 | if (argc != 2) |
| 533 | error ("wrong # args"); |
| 534 | |
| 535 | symtab = lookup_symtab (argv[1]); |
| 536 | |
| 537 | if (!symtab) |
| 538 | error ("No such file"); |
| 539 | |
| 540 | /* If there's no linetable, or no entries, then we are done. */ |
| 541 | |
| 542 | if (!symtab->linetable |
| 543 | || symtab->linetable->nitems == 0) |
| 544 | { |
| 545 | Tcl_DStringAppendElement (result_ptr, ""); |
| 546 | return TCL_OK; |
| 547 | } |
| 548 | |
| 549 | le = symtab->linetable->item; |
| 550 | nlines = symtab->linetable->nitems; |
| 551 | |
| 552 | for (;nlines > 0; nlines--, le++) |
| 553 | { |
| 554 | /* If the pc of this line is the same as the pc of the next line, then |
| 555 | just skip it. */ |
| 556 | if (nlines > 1 |
| 557 | && le->pc == (le + 1)->pc) |
| 558 | continue; |
| 559 | |
| 560 | dsprintf_append_element (result_ptr, "%d", le->line); |
| 561 | } |
| 562 | |
| 563 | return TCL_OK; |
| 564 | } |
| 565 | \f |
| 566 | static int |
| 567 | map_arg_registers (argc, argv, func, argp) |
| 568 | int argc; |
| 569 | char *argv[]; |
| 570 | void (*func) PARAMS ((int regnum, void *argp)); |
| 571 | void *argp; |
| 572 | { |
| 573 | int regnum; |
| 574 | |
| 575 | /* Note that the test for a valid register must include checking the |
| 576 | reg_names array because NUM_REGS may be allocated for the union of the |
| 577 | register sets within a family of related processors. In this case, the |
| 578 | trailing entries of reg_names will change depending upon the particular |
| 579 | processor being debugged. */ |
| 580 | |
| 581 | if (argc == 0) /* No args, just do all the regs */ |
| 582 | { |
| 583 | for (regnum = 0; |
| 584 | regnum < NUM_REGS |
| 585 | && reg_names[regnum] != NULL |
| 586 | && *reg_names[regnum] != '\000'; |
| 587 | regnum++) |
| 588 | func (regnum, argp); |
| 589 | |
| 590 | return TCL_OK; |
| 591 | } |
| 592 | |
| 593 | /* Else, list of register #s, just do listed regs */ |
| 594 | for (; argc > 0; argc--, argv++) |
| 595 | { |
| 596 | regnum = atoi (*argv); |
| 597 | |
| 598 | if (regnum >= 0 |
| 599 | && regnum < NUM_REGS |
| 600 | && reg_names[regnum] != NULL |
| 601 | && *reg_names[regnum] != '\000') |
| 602 | func (regnum, argp); |
| 603 | else |
| 604 | error ("bad register number"); |
| 605 | } |
| 606 | |
| 607 | return TCL_OK; |
| 608 | } |
| 609 | |
| 610 | static void |
| 611 | get_register_name (regnum, argp) |
| 612 | int regnum; |
| 613 | void *argp; /* Ignored */ |
| 614 | { |
| 615 | Tcl_DStringAppendElement (result_ptr, reg_names[regnum]); |
| 616 | } |
| 617 | |
| 618 | /* This implements the TCL command `gdb_regnames', which returns a list of |
| 619 | all of the register names. */ |
| 620 | |
| 621 | static int |
| 622 | gdb_regnames (clientData, interp, argc, argv) |
| 623 | ClientData clientData; |
| 624 | Tcl_Interp *interp; |
| 625 | int argc; |
| 626 | char *argv[]; |
| 627 | { |
| 628 | argc--; |
| 629 | argv++; |
| 630 | |
| 631 | return map_arg_registers (argc, argv, get_register_name, NULL); |
| 632 | } |
| 633 | |
| 634 | #ifndef REGISTER_CONVERTIBLE |
| 635 | #define REGISTER_CONVERTIBLE(x) (0 != 0) |
| 636 | #endif |
| 637 | |
| 638 | #ifndef REGISTER_CONVERT_TO_VIRTUAL |
| 639 | #define REGISTER_CONVERT_TO_VIRTUAL(x, y, z, a) |
| 640 | #endif |
| 641 | |
| 642 | #ifndef INVALID_FLOAT |
| 643 | #define INVALID_FLOAT(x, y) (0 != 0) |
| 644 | #endif |
| 645 | |
| 646 | static void |
| 647 | get_register (regnum, fp) |
| 648 | int regnum; |
| 649 | void *fp; |
| 650 | { |
| 651 | char raw_buffer[MAX_REGISTER_RAW_SIZE]; |
| 652 | char virtual_buffer[MAX_REGISTER_VIRTUAL_SIZE]; |
| 653 | int format = (int)fp; |
| 654 | |
| 655 | if (read_relative_register_raw_bytes (regnum, raw_buffer)) |
| 656 | { |
| 657 | Tcl_DStringAppendElement (result_ptr, "Optimized out"); |
| 658 | return; |
| 659 | } |
| 660 | |
| 661 | /* Convert raw data to virtual format if necessary. */ |
| 662 | |
| 663 | if (REGISTER_CONVERTIBLE (regnum)) |
| 664 | { |
| 665 | REGISTER_CONVERT_TO_VIRTUAL (regnum, REGISTER_VIRTUAL_TYPE (regnum), |
| 666 | raw_buffer, virtual_buffer); |
| 667 | } |
| 668 | else |
| 669 | memcpy (virtual_buffer, raw_buffer, REGISTER_VIRTUAL_SIZE (regnum)); |
| 670 | |
| 671 | if (format == 'r') |
| 672 | { |
| 673 | int j; |
| 674 | printf_filtered ("0x"); |
| 675 | for (j = 0; j < REGISTER_RAW_SIZE (regnum); j++) |
| 676 | { |
| 677 | register int idx = TARGET_BYTE_ORDER == BIG_ENDIAN ? j |
| 678 | : REGISTER_RAW_SIZE (regnum) - 1 - j; |
| 679 | printf_filtered ("%02x", (unsigned char)raw_buffer[idx]); |
| 680 | } |
| 681 | } |
| 682 | else |
| 683 | val_print (REGISTER_VIRTUAL_TYPE (regnum), virtual_buffer, 0, |
| 684 | gdb_stdout, format, 1, 0, Val_pretty_default); |
| 685 | |
| 686 | Tcl_DStringAppend (result_ptr, " ", -1); |
| 687 | } |
| 688 | |
| 689 | static int |
| 690 | gdb_fetch_registers (clientData, interp, argc, argv) |
| 691 | ClientData clientData; |
| 692 | Tcl_Interp *interp; |
| 693 | int argc; |
| 694 | char *argv[]; |
| 695 | { |
| 696 | int format; |
| 697 | |
| 698 | if (argc < 2) |
| 699 | error ("wrong # args"); |
| 700 | |
| 701 | argc--; |
| 702 | argv++; |
| 703 | |
| 704 | argc--; |
| 705 | format = **argv++; |
| 706 | |
| 707 | return map_arg_registers (argc, argv, get_register, (void *) format); |
| 708 | } |
| 709 | |
| 710 | /* This contains the previous values of the registers, since the last call to |
| 711 | gdb_changed_register_list. */ |
| 712 | |
| 713 | static char old_regs[REGISTER_BYTES]; |
| 714 | |
| 715 | static void |
| 716 | register_changed_p (regnum, argp) |
| 717 | int regnum; |
| 718 | void *argp; /* Ignored */ |
| 719 | { |
| 720 | char raw_buffer[MAX_REGISTER_RAW_SIZE]; |
| 721 | |
| 722 | if (read_relative_register_raw_bytes (regnum, raw_buffer)) |
| 723 | return; |
| 724 | |
| 725 | if (memcmp (&old_regs[REGISTER_BYTE (regnum)], raw_buffer, |
| 726 | REGISTER_RAW_SIZE (regnum)) == 0) |
| 727 | return; |
| 728 | |
| 729 | /* Found a changed register. Save new value and return its number. */ |
| 730 | |
| 731 | memcpy (&old_regs[REGISTER_BYTE (regnum)], raw_buffer, |
| 732 | REGISTER_RAW_SIZE (regnum)); |
| 733 | |
| 734 | dsprintf_append_element (result_ptr, "%d", regnum); |
| 735 | } |
| 736 | |
| 737 | static int |
| 738 | gdb_changed_register_list (clientData, interp, argc, argv) |
| 739 | ClientData clientData; |
| 740 | Tcl_Interp *interp; |
| 741 | int argc; |
| 742 | char *argv[]; |
| 743 | { |
| 744 | argc--; |
| 745 | argv++; |
| 746 | |
| 747 | return map_arg_registers (argc, argv, register_changed_p, NULL); |
| 748 | } |
| 749 | \f |
| 750 | /* This implements the TCL command `gdb_cmd', which sends its argument into |
| 751 | the GDB command scanner. */ |
| 752 | |
| 753 | static int |
| 754 | gdb_cmd (clientData, interp, argc, argv) |
| 755 | ClientData clientData; |
| 756 | Tcl_Interp *interp; |
| 757 | int argc; |
| 758 | char *argv[]; |
| 759 | { |
| 760 | if (argc != 2) |
| 761 | error ("wrong # args"); |
| 762 | |
| 763 | if (running_now) |
| 764 | return TCL_OK; |
| 765 | |
| 766 | execute_command (argv[1], 1); |
| 767 | |
| 768 | bpstat_do_actions (&stop_bpstat); |
| 769 | |
| 770 | return TCL_OK; |
| 771 | } |
| 772 | |
| 773 | /* This routine acts as a top-level for all GDB code called by tcl/Tk. It |
| 774 | handles cleanups, and calls to return_to_top_level (usually via error). |
| 775 | This is necessary in order to prevent a longjmp out of the bowels of Tk, |
| 776 | possibly leaving things in a bad state. Since this routine can be called |
| 777 | recursively, it needs to save and restore the contents of the jmp_buf as |
| 778 | necessary. */ |
| 779 | |
| 780 | static int |
| 781 | call_wrapper (clientData, interp, argc, argv) |
| 782 | ClientData clientData; |
| 783 | Tcl_Interp *interp; |
| 784 | int argc; |
| 785 | char *argv[]; |
| 786 | { |
| 787 | int val; |
| 788 | struct cleanup *saved_cleanup_chain; |
| 789 | Tcl_CmdProc *func; |
| 790 | jmp_buf saved_error_return; |
| 791 | Tcl_DString result, *old_result_ptr; |
| 792 | |
| 793 | Tcl_DStringInit (&result); |
| 794 | old_result_ptr = result_ptr; |
| 795 | result_ptr = &result; |
| 796 | |
| 797 | func = (Tcl_CmdProc *)clientData; |
| 798 | memcpy (saved_error_return, error_return, sizeof (jmp_buf)); |
| 799 | |
| 800 | saved_cleanup_chain = save_cleanups (); |
| 801 | |
| 802 | if (!setjmp (error_return)) |
| 803 | val = func (clientData, interp, argc, argv); |
| 804 | else |
| 805 | { |
| 806 | val = TCL_ERROR; /* Flag an error for TCL */ |
| 807 | |
| 808 | gdb_flush (gdb_stderr); /* Flush error output */ |
| 809 | |
| 810 | gdb_flush (gdb_stdout); /* Sometimes error output comes here as well */ |
| 811 | |
| 812 | /* In case of an error, we may need to force the GUI into idle |
| 813 | mode because gdbtk_call_command may have bombed out while in |
| 814 | the command routine. */ |
| 815 | |
| 816 | running_now = 0; |
| 817 | Tcl_Eval (interp, "gdbtk_tcl_idle"); |
| 818 | } |
| 819 | |
| 820 | do_cleanups (ALL_CLEANUPS); |
| 821 | |
| 822 | restore_cleanups (saved_cleanup_chain); |
| 823 | |
| 824 | memcpy (error_return, saved_error_return, sizeof (jmp_buf)); |
| 825 | |
| 826 | Tcl_DStringResult (interp, &result); |
| 827 | result_ptr = old_result_ptr; |
| 828 | |
| 829 | return val; |
| 830 | } |
| 831 | |
| 832 | static int |
| 833 | gdb_listfiles (clientData, interp, argc, argv) |
| 834 | ClientData clientData; |
| 835 | Tcl_Interp *interp; |
| 836 | int argc; |
| 837 | char *argv[]; |
| 838 | { |
| 839 | struct objfile *objfile; |
| 840 | struct partial_symtab *psymtab; |
| 841 | struct symtab *symtab; |
| 842 | |
| 843 | ALL_PSYMTABS (objfile, psymtab) |
| 844 | Tcl_DStringAppendElement (result_ptr, psymtab->filename); |
| 845 | |
| 846 | ALL_SYMTABS (objfile, symtab) |
| 847 | Tcl_DStringAppendElement (result_ptr, symtab->filename); |
| 848 | |
| 849 | return TCL_OK; |
| 850 | } |
| 851 | |
| 852 | static int |
| 853 | gdb_stop (clientData, interp, argc, argv) |
| 854 | ClientData clientData; |
| 855 | Tcl_Interp *interp; |
| 856 | int argc; |
| 857 | char *argv[]; |
| 858 | { |
| 859 | target_stop (); |
| 860 | |
| 861 | return TCL_OK; |
| 862 | } |
| 863 | \f |
| 864 | /* This implements the TCL command `gdb_disassemble'. */ |
| 865 | |
| 866 | static int |
| 867 | gdbtk_dis_asm_read_memory (memaddr, myaddr, len, info) |
| 868 | bfd_vma memaddr; |
| 869 | bfd_byte *myaddr; |
| 870 | int len; |
| 871 | disassemble_info *info; |
| 872 | { |
| 873 | extern struct target_ops exec_ops; |
| 874 | int res; |
| 875 | |
| 876 | errno = 0; |
| 877 | res = xfer_memory (memaddr, myaddr, len, 0, &exec_ops); |
| 878 | |
| 879 | if (res == len) |
| 880 | return 0; |
| 881 | else |
| 882 | if (errno == 0) |
| 883 | return EIO; |
| 884 | else |
| 885 | return errno; |
| 886 | } |
| 887 | |
| 888 | /* We need a different sort of line table from the normal one cuz we can't |
| 889 | depend upon implicit line-end pc's for lines. This is because of the |
| 890 | reordering we are about to do. */ |
| 891 | |
| 892 | struct my_line_entry { |
| 893 | int line; |
| 894 | CORE_ADDR start_pc; |
| 895 | CORE_ADDR end_pc; |
| 896 | }; |
| 897 | |
| 898 | static int |
| 899 | compare_lines (mle1p, mle2p) |
| 900 | const PTR mle1p; |
| 901 | const PTR mle2p; |
| 902 | { |
| 903 | struct my_line_entry *mle1, *mle2; |
| 904 | int val; |
| 905 | |
| 906 | mle1 = (struct my_line_entry *) mle1p; |
| 907 | mle2 = (struct my_line_entry *) mle2p; |
| 908 | |
| 909 | val = mle1->line - mle2->line; |
| 910 | |
| 911 | if (val != 0) |
| 912 | return val; |
| 913 | |
| 914 | return mle1->start_pc - mle2->start_pc; |
| 915 | } |
| 916 | |
| 917 | static int |
| 918 | gdb_disassemble (clientData, interp, argc, argv) |
| 919 | ClientData clientData; |
| 920 | Tcl_Interp *interp; |
| 921 | int argc; |
| 922 | char *argv[]; |
| 923 | { |
| 924 | CORE_ADDR pc, low, high; |
| 925 | int mixed_source_and_assembly; |
| 926 | static disassemble_info di; |
| 927 | static int di_initialized; |
| 928 | |
| 929 | if (! di_initialized) |
| 930 | { |
| 931 | INIT_DISASSEMBLE_INFO_NO_ARCH (di, gdb_stdout, |
| 932 | (fprintf_ftype) fprintf_unfiltered); |
| 933 | di.flavour = bfd_target_unknown_flavour; |
| 934 | di.memory_error_func = dis_asm_memory_error; |
| 935 | di.print_address_func = dis_asm_print_address; |
| 936 | di_initialized = 1; |
| 937 | } |
| 938 | |
| 939 | di.mach = tm_print_insn_info.mach; |
| 940 | if (TARGET_BYTE_ORDER == BIG_ENDIAN) |
| 941 | tm_print_insn_info.endian = BFD_ENDIAN_BIG; |
| 942 | else |
| 943 | tm_print_insn_info.endian = BFD_ENDIAN_LITTLE; |
| 944 | |
| 945 | if (argc != 3 && argc != 4) |
| 946 | error ("wrong # args"); |
| 947 | |
| 948 | if (strcmp (argv[1], "source") == 0) |
| 949 | mixed_source_and_assembly = 1; |
| 950 | else if (strcmp (argv[1], "nosource") == 0) |
| 951 | mixed_source_and_assembly = 0; |
| 952 | else |
| 953 | error ("First arg must be 'source' or 'nosource'"); |
| 954 | |
| 955 | low = parse_and_eval_address (argv[2]); |
| 956 | |
| 957 | if (argc == 3) |
| 958 | { |
| 959 | if (find_pc_partial_function (low, NULL, &low, &high) == 0) |
| 960 | error ("No function contains specified address"); |
| 961 | } |
| 962 | else |
| 963 | high = parse_and_eval_address (argv[3]); |
| 964 | |
| 965 | /* If disassemble_from_exec == -1, then we use the following heuristic to |
| 966 | determine whether or not to do disassembly from target memory or from the |
| 967 | exec file: |
| 968 | |
| 969 | If we're debugging a local process, read target memory, instead of the |
| 970 | exec file. This makes disassembly of functions in shared libs work |
| 971 | correctly. |
| 972 | |
| 973 | Else, we're debugging a remote process, and should disassemble from the |
| 974 | exec file for speed. However, this is no good if the target modifies its |
| 975 | code (for relocation, or whatever). |
| 976 | */ |
| 977 | |
| 978 | if (disassemble_from_exec == -1) |
| 979 | if (strcmp (target_shortname, "child") == 0 |
| 980 | || strcmp (target_shortname, "procfs") == 0 |
| 981 | || strcmp (target_shortname, "vxprocess") == 0) |
| 982 | disassemble_from_exec = 0; /* It's a child process, read inferior mem */ |
| 983 | else |
| 984 | disassemble_from_exec = 1; /* It's remote, read the exec file */ |
| 985 | |
| 986 | if (disassemble_from_exec) |
| 987 | di.read_memory_func = gdbtk_dis_asm_read_memory; |
| 988 | else |
| 989 | di.read_memory_func = dis_asm_read_memory; |
| 990 | |
| 991 | /* If just doing straight assembly, all we need to do is disassemble |
| 992 | everything between low and high. If doing mixed source/assembly, we've |
| 993 | got a totally different path to follow. */ |
| 994 | |
| 995 | if (mixed_source_and_assembly) |
| 996 | { /* Come here for mixed source/assembly */ |
| 997 | /* The idea here is to present a source-O-centric view of a function to |
| 998 | the user. This means that things are presented in source order, with |
| 999 | (possibly) out of order assembly immediately following. */ |
| 1000 | struct symtab *symtab; |
| 1001 | struct linetable_entry *le; |
| 1002 | int nlines; |
| 1003 | int newlines; |
| 1004 | struct my_line_entry *mle; |
| 1005 | struct symtab_and_line sal; |
| 1006 | int i; |
| 1007 | int out_of_order; |
| 1008 | int next_line; |
| 1009 | |
| 1010 | symtab = find_pc_symtab (low); /* Assume symtab is valid for whole PC range */ |
| 1011 | |
| 1012 | if (!symtab) |
| 1013 | goto assembly_only; |
| 1014 | |
| 1015 | /* First, convert the linetable to a bunch of my_line_entry's. */ |
| 1016 | |
| 1017 | le = symtab->linetable->item; |
| 1018 | nlines = symtab->linetable->nitems; |
| 1019 | |
| 1020 | if (nlines <= 0) |
| 1021 | goto assembly_only; |
| 1022 | |
| 1023 | mle = (struct my_line_entry *) alloca (nlines * sizeof (struct my_line_entry)); |
| 1024 | |
| 1025 | out_of_order = 0; |
| 1026 | |
| 1027 | /* Copy linetable entries for this function into our data structure, creating |
| 1028 | end_pc's and setting out_of_order as appropriate. */ |
| 1029 | |
| 1030 | /* First, skip all the preceding functions. */ |
| 1031 | |
| 1032 | for (i = 0; i < nlines - 1 && le[i].pc < low; i++) ; |
| 1033 | |
| 1034 | /* Now, copy all entries before the end of this function. */ |
| 1035 | |
| 1036 | newlines = 0; |
| 1037 | for (; i < nlines - 1 && le[i].pc < high; i++) |
| 1038 | { |
| 1039 | if (le[i].line == le[i + 1].line |
| 1040 | && le[i].pc == le[i + 1].pc) |
| 1041 | continue; /* Ignore duplicates */ |
| 1042 | |
| 1043 | mle[newlines].line = le[i].line; |
| 1044 | if (le[i].line > le[i + 1].line) |
| 1045 | out_of_order = 1; |
| 1046 | mle[newlines].start_pc = le[i].pc; |
| 1047 | mle[newlines].end_pc = le[i + 1].pc; |
| 1048 | newlines++; |
| 1049 | } |
| 1050 | |
| 1051 | /* If we're on the last line, and it's part of the function, then we need to |
| 1052 | get the end pc in a special way. */ |
| 1053 | |
| 1054 | if (i == nlines - 1 |
| 1055 | && le[i].pc < high) |
| 1056 | { |
| 1057 | mle[newlines].line = le[i].line; |
| 1058 | mle[newlines].start_pc = le[i].pc; |
| 1059 | sal = find_pc_line (le[i].pc, 0); |
| 1060 | mle[newlines].end_pc = sal.end; |
| 1061 | newlines++; |
| 1062 | } |
| 1063 | |
| 1064 | /* Now, sort mle by line #s (and, then by addresses within lines). */ |
| 1065 | |
| 1066 | if (out_of_order) |
| 1067 | qsort (mle, newlines, sizeof (struct my_line_entry), compare_lines); |
| 1068 | |
| 1069 | /* Now, for each line entry, emit the specified lines (unless they have been |
| 1070 | emitted before), followed by the assembly code for that line. */ |
| 1071 | |
| 1072 | next_line = 0; /* Force out first line */ |
| 1073 | for (i = 0; i < newlines; i++) |
| 1074 | { |
| 1075 | /* Print out everything from next_line to the current line. */ |
| 1076 | |
| 1077 | if (mle[i].line >= next_line) |
| 1078 | { |
| 1079 | if (next_line != 0) |
| 1080 | print_source_lines (symtab, next_line, mle[i].line + 1, 0); |
| 1081 | else |
| 1082 | print_source_lines (symtab, mle[i].line, mle[i].line + 1, 0); |
| 1083 | |
| 1084 | next_line = mle[i].line + 1; |
| 1085 | } |
| 1086 | |
| 1087 | for (pc = mle[i].start_pc; pc < mle[i].end_pc; ) |
| 1088 | { |
| 1089 | QUIT; |
| 1090 | fputs_unfiltered (" ", gdb_stdout); |
| 1091 | print_address (pc, gdb_stdout); |
| 1092 | fputs_unfiltered (":\t ", gdb_stdout); |
| 1093 | pc += (*tm_print_insn) (pc, &di); |
| 1094 | fputs_unfiltered ("\n", gdb_stdout); |
| 1095 | } |
| 1096 | } |
| 1097 | } |
| 1098 | else |
| 1099 | { |
| 1100 | assembly_only: |
| 1101 | for (pc = low; pc < high; ) |
| 1102 | { |
| 1103 | QUIT; |
| 1104 | fputs_unfiltered (" ", gdb_stdout); |
| 1105 | print_address (pc, gdb_stdout); |
| 1106 | fputs_unfiltered (":\t ", gdb_stdout); |
| 1107 | pc += (*tm_print_insn) (pc, &di); |
| 1108 | fputs_unfiltered ("\n", gdb_stdout); |
| 1109 | } |
| 1110 | } |
| 1111 | |
| 1112 | gdb_flush (gdb_stdout); |
| 1113 | |
| 1114 | return TCL_OK; |
| 1115 | } |
| 1116 | \f |
| 1117 | static void |
| 1118 | tk_command (cmd, from_tty) |
| 1119 | char *cmd; |
| 1120 | int from_tty; |
| 1121 | { |
| 1122 | int retval; |
| 1123 | char *result; |
| 1124 | struct cleanup *old_chain; |
| 1125 | |
| 1126 | /* Catch case of no argument, since this will make the tcl interpreter dump core. */ |
| 1127 | if (cmd == NULL) |
| 1128 | error_no_arg ("tcl command to interpret"); |
| 1129 | |
| 1130 | retval = Tcl_Eval (interp, cmd); |
| 1131 | |
| 1132 | result = strdup (interp->result); |
| 1133 | |
| 1134 | old_chain = make_cleanup (free, result); |
| 1135 | |
| 1136 | if (retval != TCL_OK) |
| 1137 | error (result); |
| 1138 | |
| 1139 | printf_unfiltered ("%s\n", result); |
| 1140 | |
| 1141 | do_cleanups (old_chain); |
| 1142 | } |
| 1143 | |
| 1144 | static void |
| 1145 | cleanup_init (ignored) |
| 1146 | int ignored; |
| 1147 | { |
| 1148 | if (interp != NULL) |
| 1149 | Tcl_DeleteInterp (interp); |
| 1150 | interp = NULL; |
| 1151 | } |
| 1152 | |
| 1153 | /* Come here during long calculations to check for GUI events. Usually invoked |
| 1154 | via the QUIT macro. */ |
| 1155 | |
| 1156 | static void |
| 1157 | gdbtk_interactive () |
| 1158 | { |
| 1159 | /* Tk_DoOneEvent (TK_DONT_WAIT|TK_IDLE_EVENTS); */ |
| 1160 | } |
| 1161 | |
| 1162 | /* Come here when there is activity on the X file descriptor. */ |
| 1163 | |
| 1164 | static void |
| 1165 | x_event (signo) |
| 1166 | int signo; |
| 1167 | { |
| 1168 | /* Process pending events */ |
| 1169 | |
| 1170 | while (Tcl_DoOneEvent (TCL_DONT_WAIT|TCL_ALL_EVENTS) != 0); |
| 1171 | } |
| 1172 | |
| 1173 | static int |
| 1174 | gdbtk_wait (pid, ourstatus) |
| 1175 | int pid; |
| 1176 | struct target_waitstatus *ourstatus; |
| 1177 | { |
| 1178 | struct sigaction action; |
| 1179 | static sigset_t nullsigmask = {0}; |
| 1180 | |
| 1181 | #ifndef SA_RESTART |
| 1182 | /* Needed for SunOS 4.1.x */ |
| 1183 | #define SA_RESTART 0 |
| 1184 | #endif |
| 1185 | |
| 1186 | action.sa_handler = x_event; |
| 1187 | action.sa_mask = nullsigmask; |
| 1188 | action.sa_flags = SA_RESTART; |
| 1189 | sigaction(SIGIO, &action, NULL); |
| 1190 | |
| 1191 | pid = target_wait (pid, ourstatus); |
| 1192 | |
| 1193 | action.sa_handler = SIG_IGN; |
| 1194 | sigaction(SIGIO, &action, NULL); |
| 1195 | |
| 1196 | return pid; |
| 1197 | } |
| 1198 | |
| 1199 | /* This is called from execute_command, and provides a wrapper around |
| 1200 | various command routines in a place where both protocol messages and |
| 1201 | user input both flow through. Mostly this is used for indicating whether |
| 1202 | the target process is running or not. |
| 1203 | */ |
| 1204 | |
| 1205 | static void |
| 1206 | gdbtk_call_command (cmdblk, arg, from_tty) |
| 1207 | struct cmd_list_element *cmdblk; |
| 1208 | char *arg; |
| 1209 | int from_tty; |
| 1210 | { |
| 1211 | running_now = 0; |
| 1212 | if (cmdblk->class == class_run) |
| 1213 | { |
| 1214 | running_now = 1; |
| 1215 | Tcl_Eval (interp, "gdbtk_tcl_busy"); |
| 1216 | (*cmdblk->function.cfunc)(arg, from_tty); |
| 1217 | Tcl_Eval (interp, "gdbtk_tcl_idle"); |
| 1218 | running_now = 0; |
| 1219 | } |
| 1220 | else |
| 1221 | (*cmdblk->function.cfunc)(arg, from_tty); |
| 1222 | } |
| 1223 | |
| 1224 | /* This function is called instead of gdb's internal command loop. This is the |
| 1225 | last chance to do anything before entering the main Tk event loop. */ |
| 1226 | |
| 1227 | static void |
| 1228 | tk_command_loop () |
| 1229 | { |
| 1230 | extern GDB_FILE *instream; |
| 1231 | |
| 1232 | /* We no longer want to use stdin as the command input stream */ |
| 1233 | instream = NULL; |
| 1234 | Tcl_Eval (interp, "gdbtk_tcl_preloop"); |
| 1235 | Tk_MainLoop (); |
| 1236 | } |
| 1237 | |
| 1238 | static void |
| 1239 | gdbtk_init () |
| 1240 | { |
| 1241 | struct cleanup *old_chain; |
| 1242 | char *gdbtk_filename; |
| 1243 | int i; |
| 1244 | struct sigaction action; |
| 1245 | static sigset_t nullsigmask = {0}; |
| 1246 | |
| 1247 | /* If there is no DISPLAY environment variable, Tk_Init below will fail, |
| 1248 | causing gdb to abort. If instead we simply return here, gdb will |
| 1249 | gracefully degrade to using the command line interface. */ |
| 1250 | |
| 1251 | if (getenv ("DISPLAY") == NULL) |
| 1252 | return; |
| 1253 | |
| 1254 | old_chain = make_cleanup (cleanup_init, 0); |
| 1255 | |
| 1256 | /* First init tcl and tk. */ |
| 1257 | |
| 1258 | interp = Tcl_CreateInterp (); |
| 1259 | |
| 1260 | if (!interp) |
| 1261 | error ("Tcl_CreateInterp failed"); |
| 1262 | |
| 1263 | if (Tcl_Init(interp) != TCL_OK) |
| 1264 | error ("Tcl_Init failed: %s", interp->result); |
| 1265 | |
| 1266 | if (Tk_Init(interp) != TCL_OK) |
| 1267 | error ("Tk_Init failed: %s", interp->result); |
| 1268 | |
| 1269 | Tcl_CreateCommand (interp, "gdb_cmd", call_wrapper, gdb_cmd, NULL); |
| 1270 | Tcl_CreateCommand (interp, "gdb_loc", call_wrapper, gdb_loc, NULL); |
| 1271 | Tcl_CreateCommand (interp, "gdb_sourcelines", call_wrapper, gdb_sourcelines, |
| 1272 | NULL); |
| 1273 | Tcl_CreateCommand (interp, "gdb_listfiles", call_wrapper, gdb_listfiles, |
| 1274 | NULL); |
| 1275 | Tcl_CreateCommand (interp, "gdb_stop", call_wrapper, gdb_stop, NULL); |
| 1276 | Tcl_CreateCommand (interp, "gdb_regnames", call_wrapper, gdb_regnames, NULL); |
| 1277 | Tcl_CreateCommand (interp, "gdb_fetch_registers", call_wrapper, |
| 1278 | gdb_fetch_registers, NULL); |
| 1279 | Tcl_CreateCommand (interp, "gdb_changed_register_list", call_wrapper, |
| 1280 | gdb_changed_register_list, NULL); |
| 1281 | Tcl_CreateCommand (interp, "gdb_disassemble", call_wrapper, |
| 1282 | gdb_disassemble, NULL); |
| 1283 | Tcl_CreateCommand (interp, "gdb_eval", call_wrapper, gdb_eval, NULL); |
| 1284 | Tcl_CreateCommand (interp, "gdb_get_breakpoint_list", call_wrapper, |
| 1285 | gdb_get_breakpoint_list, NULL); |
| 1286 | Tcl_CreateCommand (interp, "gdb_get_breakpoint_info", call_wrapper, |
| 1287 | gdb_get_breakpoint_info, NULL); |
| 1288 | |
| 1289 | command_loop_hook = tk_command_loop; |
| 1290 | print_frame_info_listing_hook = |
| 1291 | (void (*) PARAMS ((struct symtab *, int, int, int))) null_routine; |
| 1292 | query_hook = gdbtk_query; |
| 1293 | flush_hook = gdbtk_flush; |
| 1294 | create_breakpoint_hook = gdbtk_create_breakpoint; |
| 1295 | delete_breakpoint_hook = gdbtk_delete_breakpoint; |
| 1296 | modify_breakpoint_hook = gdbtk_modify_breakpoint; |
| 1297 | interactive_hook = gdbtk_interactive; |
| 1298 | target_wait_hook = gdbtk_wait; |
| 1299 | call_command_hook = gdbtk_call_command; |
| 1300 | readline_begin_hook = gdbtk_readline_begin; |
| 1301 | readline_hook = gdbtk_readline; |
| 1302 | readline_end_hook = gdbtk_readline_end; |
| 1303 | |
| 1304 | /* Get the file descriptor for the X server */ |
| 1305 | |
| 1306 | x_fd = ConnectionNumber (Tk_Display (Tk_MainWindow (interp))); |
| 1307 | |
| 1308 | /* Setup for I/O interrupts */ |
| 1309 | |
| 1310 | action.sa_mask = nullsigmask; |
| 1311 | action.sa_flags = 0; |
| 1312 | action.sa_handler = SIG_IGN; |
| 1313 | sigaction(SIGIO, &action, NULL); |
| 1314 | |
| 1315 | #ifdef FIOASYNC |
| 1316 | i = 1; |
| 1317 | if (ioctl (x_fd, FIOASYNC, &i)) |
| 1318 | perror_with_name ("gdbtk_init: ioctl FIOASYNC failed"); |
| 1319 | |
| 1320 | #ifdef SIOCSPGRP |
| 1321 | i = getpid(); |
| 1322 | if (ioctl (x_fd, SIOCSPGRP, &i)) |
| 1323 | perror_with_name ("gdbtk_init: ioctl SIOCSPGRP failed"); |
| 1324 | |
| 1325 | #else |
| 1326 | #ifdef F_SETOWN |
| 1327 | i = getpid(); |
| 1328 | if (fcntl (x_fd, F_SETOWN, i)) |
| 1329 | perror_with_name ("gdbtk_init: fcntl F_SETOWN failed"); |
| 1330 | #endif /* F_SETOWN */ |
| 1331 | #endif /* !SIOCSPGRP */ |
| 1332 | #else |
| 1333 | if (ioctl (x_fd, I_SETSIG, S_INPUT|S_RDNORM) < 0) |
| 1334 | perror_with_name ("gdbtk_init: ioctl I_SETSIG failed"); |
| 1335 | #endif /* ifndef FIOASYNC */ |
| 1336 | |
| 1337 | add_com ("tk", class_obscure, tk_command, |
| 1338 | "Send a command directly into tk."); |
| 1339 | |
| 1340 | Tcl_LinkVar (interp, "disassemble-from-exec", (char *)&disassemble_from_exec, |
| 1341 | TCL_LINK_INT); |
| 1342 | |
| 1343 | /* Load up gdbtk.tcl after all the environment stuff has been setup. */ |
| 1344 | |
| 1345 | gdbtk_filename = getenv ("GDBTK_FILENAME"); |
| 1346 | if (!gdbtk_filename) |
| 1347 | if (access ("gdbtk.tcl", R_OK) == 0) |
| 1348 | gdbtk_filename = "gdbtk.tcl"; |
| 1349 | else |
| 1350 | gdbtk_filename = GDBTK_FILENAME; |
| 1351 | |
| 1352 | /* Defer setup of fputs_unfiltered_hook to near the end so that error messages |
| 1353 | prior to this point go to stdout/stderr. */ |
| 1354 | |
| 1355 | fputs_unfiltered_hook = gdbtk_fputs; |
| 1356 | |
| 1357 | if (Tcl_EvalFile (interp, gdbtk_filename) != TCL_OK) |
| 1358 | { |
| 1359 | fputs_unfiltered_hook = NULL; /* Force errors to stdout/stderr */ |
| 1360 | |
| 1361 | fprintf_unfiltered (stderr, "%s:%d: %s\n", gdbtk_filename, |
| 1362 | interp->errorLine, interp->result); |
| 1363 | |
| 1364 | fputs_unfiltered ("Stack trace:\n", gdb_stderr); |
| 1365 | fputs_unfiltered (Tcl_GetVar (interp, "errorInfo", 0), gdb_stderr); |
| 1366 | error (""); |
| 1367 | } |
| 1368 | |
| 1369 | discard_cleanups (old_chain); |
| 1370 | } |
| 1371 | |
| 1372 | /* Come here during initialize_all_files () */ |
| 1373 | |
| 1374 | void |
| 1375 | _initialize_gdbtk () |
| 1376 | { |
| 1377 | if (use_windows) |
| 1378 | { |
| 1379 | /* Tell the rest of the world that Gdbtk is now set up. */ |
| 1380 | |
| 1381 | init_ui_hook = gdbtk_init; |
| 1382 | } |
| 1383 | } |