| 1 | /* Energize (formerly known as Cadillac) interface routines. |
| 2 | Copyright 1991, 1992 Free Software Foundation, Inc. |
| 3 | |
| 4 | This file is part of GDB. |
| 5 | |
| 6 | This program is free software; you can redistribute it and/or modify |
| 7 | it under the terms of the GNU General Public License as published by |
| 8 | the Free Software Foundation; either version 2 of the License, or |
| 9 | (at your option) any later version. |
| 10 | |
| 11 | This program is distributed in the hope that it will be useful, |
| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | GNU General Public License for more details. |
| 15 | |
| 16 | You should have received a copy of the GNU General Public License |
| 17 | along with this program; if not, write to the Free Software |
| 18 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ |
| 19 | |
| 20 | #include "defs.h" |
| 21 | #include "symtab.h" |
| 22 | #include "inferior.h" |
| 23 | #include "command.h" |
| 24 | #include "bfd.h" |
| 25 | #include "symfile.h" |
| 26 | #include "objfiles.h" |
| 27 | #include <sys/types.h> |
| 28 | #include <sys/time.h> |
| 29 | #include <sys/param.h> |
| 30 | #include <connection.h> |
| 31 | #include <genericreq.h> |
| 32 | #include <debuggerreq.h> |
| 33 | #include <debuggerconn.h> |
| 34 | #include <ttyconn.h> |
| 35 | #include <varargs.h> |
| 36 | #include <sys/stat.h> |
| 37 | #ifdef USG |
| 38 | #include <sys/file.h> |
| 39 | #endif |
| 40 | #include <fcntl.h> |
| 41 | #include <sys/filio.h> |
| 42 | #include <setjmp.h> |
| 43 | #include <signal.h> |
| 44 | #include <sys/errno.h> |
| 45 | #include <termios.h> |
| 46 | #include <string.h> |
| 47 | |
| 48 | /* Non-zero means that we're doing the cadillac interface. */ |
| 49 | int cadillac = 0; |
| 50 | |
| 51 | /* Connection block for debugger<=>kernel communications. */ |
| 52 | static Connection *conn = 0; |
| 53 | |
| 54 | /* fd for our socket to the kernel. */ |
| 55 | static int kerfd; |
| 56 | |
| 57 | /* The kernel's ID for this instance of the program. */ |
| 58 | static int program_id; |
| 59 | |
| 60 | static int instance_id; |
| 61 | |
| 62 | /* The fd for the pty associated with the inferior. */ |
| 63 | static int inferior_pty = -1; |
| 64 | static int inferior_tty = -1; |
| 65 | |
| 66 | static int has_run = 0; |
| 67 | |
| 68 | extern int pgrp_inferior; |
| 69 | |
| 70 | extern char *source_path; |
| 71 | |
| 72 | char **pprompt; /* Pointer to pointer to prompt */ |
| 73 | |
| 74 | /* Tell cadillac_command_line_input() where to get its text from */ |
| 75 | static int doing_breakcommands_message = 0; |
| 76 | |
| 77 | /* Stash command text here */ |
| 78 | static char *command_line_text = 0; |
| 79 | static int command_line_length = 0; |
| 80 | |
| 81 | /* Flags returned by wait_for_events() */ |
| 82 | #define KERNEL_EVENT 1 |
| 83 | #define PTY_EVENT 2 |
| 84 | |
| 85 | \f |
| 86 | /* This routine redirects the output of fputs_filtered to the kernel so that |
| 87 | the user can see what's going on in his debugger window. */ |
| 88 | |
| 89 | void |
| 90 | cadillac_fputs(ptr) |
| 91 | const char *ptr; |
| 92 | { |
| 93 | if (conn) |
| 94 | CVWriteTranscriptInfo (conn, instance_id, (char *)ptr); |
| 95 | else |
| 96 | fputs (ptr, stdout); |
| 97 | } |
| 98 | |
| 99 | void |
| 100 | cadillac_query(query, args) |
| 101 | char *query; |
| 102 | va_list args; |
| 103 | { |
| 104 | char buf[100]; |
| 105 | |
| 106 | vsprintf(buf, query, args); |
| 107 | |
| 108 | CVWriteQueryInfo(conn, |
| 109 | instance_id, |
| 110 | CQueryConfirm, |
| 111 | qno_unknown, |
| 112 | buf, |
| 113 | ""); /* transcript */ |
| 114 | } |
| 115 | |
| 116 | void |
| 117 | cadillac_acknowledge_query(ack) |
| 118 | char *ack; |
| 119 | { |
| 120 | CVWriteQueryInfo(conn, |
| 121 | instance_id, |
| 122 | CQueryAcknowleged, |
| 123 | 0, |
| 124 | ack, |
| 125 | ""); /* transcript */ |
| 126 | } |
| 127 | |
| 128 | /* Copy all data from the pty to the kernel. */ |
| 129 | |
| 130 | static void |
| 131 | pty_to_kernel() |
| 132 | { |
| 133 | CTtyRequest *req; |
| 134 | char buf[1024]; |
| 135 | int cc; |
| 136 | |
| 137 | while (1) |
| 138 | { |
| 139 | cc = read(inferior_pty, buf, sizeof(buf)); |
| 140 | |
| 141 | if (cc == 0 |
| 142 | || (cc < 0 |
| 143 | && errno == EWOULDBLOCK)) |
| 144 | break; |
| 145 | |
| 146 | if (cc < 0) |
| 147 | { |
| 148 | close(inferior_pty); |
| 149 | inferior_pty = -1; |
| 150 | perror("pty read error"); |
| 151 | break; |
| 152 | } |
| 153 | |
| 154 | req = CWriteTtyRequest(conn, TextIORType); |
| 155 | CWriteVstringLen(conn, buf, cc); |
| 156 | CWriteLength(conn); |
| 157 | } |
| 158 | CWriteRequestBuffer(conn); |
| 159 | } |
| 160 | |
| 161 | /* Copy data from the kernel to the pty. */ |
| 162 | |
| 163 | static void |
| 164 | kernel_to_pty(data, len) |
| 165 | char *data; |
| 166 | int len; |
| 167 | { |
| 168 | int cc; |
| 169 | |
| 170 | cc = write(inferior_pty, data, len); |
| 171 | |
| 172 | if (cc != len) |
| 173 | { |
| 174 | if (cc < 0) |
| 175 | { |
| 176 | close(inferior_pty); |
| 177 | inferior_pty = -1; |
| 178 | perror("pty write error"); |
| 179 | return; |
| 180 | } |
| 181 | printf("Couldn't write all the data to the pty, wanted %d, got %d\n", |
| 182 | len, cc); |
| 183 | } |
| 184 | } |
| 185 | \f |
| 186 | static char * |
| 187 | full_filename(symtab) |
| 188 | struct symtab *symtab; |
| 189 | { |
| 190 | int pathlen; |
| 191 | char *filename; |
| 192 | |
| 193 | if (!symtab) |
| 194 | return NULL; |
| 195 | |
| 196 | if (symtab->fullname) |
| 197 | return savestring(symtab->fullname, strlen(symtab->fullname)); |
| 198 | |
| 199 | if (symtab->dirname) |
| 200 | pathlen = strlen(symtab->dirname); |
| 201 | else |
| 202 | pathlen = 0; |
| 203 | if (symtab->filename) |
| 204 | pathlen += strlen(symtab->filename); |
| 205 | |
| 206 | filename = xmalloc(pathlen+1); |
| 207 | |
| 208 | if (symtab->dirname) |
| 209 | strcpy(filename, symtab->dirname); |
| 210 | else |
| 211 | *filename = '\000'; |
| 212 | if (symtab->filename) |
| 213 | strcat(filename, symtab->filename); |
| 214 | |
| 215 | return filename; |
| 216 | } |
| 217 | |
| 218 | /* Tell the cadillac kernel how high the stack is so that frame numbers (which |
| 219 | are relative to the current stack height make sense. |
| 220 | |
| 221 | Calculate the number of frames on the stack, and the number of subroutine |
| 222 | invocations that haven't changed since the last call to this routine. The |
| 223 | second number is calculated by comparing the PCs of the current stack frames |
| 224 | to the PCs of the previous set of stack frames. The screw here is that a |
| 225 | subroutine may call several different procedures, which means that the PC |
| 226 | in its frame changes, even though you are still in the same subroutine. We |
| 227 | resolve this by converting the frames PC into the PC at the start of the |
| 228 | function (for efficiency, this is done only if the simple comparison test |
| 229 | fails). */ |
| 230 | |
| 231 | struct pclist |
| 232 | { |
| 233 | CORE_ADDR pc; |
| 234 | struct pclist *next; |
| 235 | }; |
| 236 | |
| 237 | /* Non-zero means that Cadillac kernel already knows how high the stack is. */ |
| 238 | static int stack_info_valid = 0; |
| 239 | |
| 240 | static void |
| 241 | send_stack_info() |
| 242 | { |
| 243 | struct pclist *pclist = 0, *pli, *opli; |
| 244 | static struct pclist *old_pclist; |
| 245 | FRAME frame; |
| 246 | int height, similar; |
| 247 | |
| 248 | if (stack_info_valid) |
| 249 | return; |
| 250 | |
| 251 | height = 0; |
| 252 | similar = 0; |
| 253 | |
| 254 | /* First, calculate the stack height, and build the new pclist */ |
| 255 | |
| 256 | for (frame = get_current_frame(); |
| 257 | frame != 0; |
| 258 | frame = get_prev_frame(frame)) |
| 259 | { |
| 260 | (height)++; |
| 261 | pli = (struct pclist *)xmalloc(sizeof(struct pclist)); |
| 262 | |
| 263 | pli->pc = frame->pc; |
| 264 | pli->next = pclist; |
| 265 | pclist = pli; |
| 266 | } |
| 267 | |
| 268 | /* Now, figure out how much of the stack hasn't changed */ |
| 269 | |
| 270 | for (pli = pclist, opli = old_pclist; |
| 271 | pli != 0 && opli != 0; |
| 272 | pli = pli->next, opli = opli->next, (similar)++) |
| 273 | { |
| 274 | if ((pli->pc != opli->pc) |
| 275 | && (get_pc_function_start(pli->pc) |
| 276 | != get_pc_function_start(opli->pc))) |
| 277 | break; |
| 278 | } |
| 279 | |
| 280 | /* Free up all elements of the old pclist */ |
| 281 | |
| 282 | opli = old_pclist; |
| 283 | |
| 284 | while (opli) |
| 285 | { |
| 286 | pli = opli->next; |
| 287 | free (opli); |
| 288 | opli = pli; |
| 289 | } |
| 290 | |
| 291 | old_pclist = pclist; /* Install the new pclist */ |
| 292 | |
| 293 | CVWriteStackSizeInfo(conn, |
| 294 | instance_id, |
| 295 | height, /* Frame depth */ |
| 296 | CInnerFrameIs0, |
| 297 | similar, /* Frame diff */ |
| 298 | "" /* Transcript */ |
| 299 | ); |
| 300 | |
| 301 | stack_info_valid = 1; |
| 302 | } |
| 303 | |
| 304 | /* Tell the kernel where we are in the program, and what the stack looks like. |
| 305 | */ |
| 306 | |
| 307 | static void |
| 308 | send_status() |
| 309 | { |
| 310 | static int linecount = 48; |
| 311 | struct symtab_and_line sal; |
| 312 | struct symbol *symbol; |
| 313 | char *funcname, *filename; |
| 314 | static int sent_prog_inst = 0; |
| 315 | |
| 316 | if (!has_run) |
| 317 | return; |
| 318 | |
| 319 | if (inferior_pid == 0) /* target has died */ |
| 320 | { |
| 321 | CVWriteProgramTerminatedInfo(conn, |
| 322 | instance_id, |
| 323 | "" |
| 324 | ); |
| 325 | return; |
| 326 | } |
| 327 | |
| 328 | sal = find_pc_line(stop_pc, 0); |
| 329 | symbol = find_pc_function(stop_pc); |
| 330 | |
| 331 | funcname = symbol ? symbol->name : ""; |
| 332 | filename = full_filename(sal.symtab); |
| 333 | |
| 334 | if (!sent_prog_inst) |
| 335 | { |
| 336 | sent_prog_inst = 1; |
| 337 | CVWriteProgramInstanceInfo(conn, |
| 338 | program_id, |
| 339 | instance_id, |
| 340 | "", /* hostname */ |
| 341 | "", /* arglist */ |
| 342 | "" |
| 343 | ); |
| 344 | } |
| 345 | |
| 346 | send_stack_info(); |
| 347 | |
| 348 | CVWriteStackFrameInfo(conn, |
| 349 | instance_id, |
| 350 | sal.line, |
| 351 | CFileLinePos, |
| 352 | 0, /* XXX - frame # */ |
| 353 | funcname, |
| 354 | filename, |
| 355 | "" /* XXX ? transcript */ |
| 356 | ); |
| 357 | |
| 358 | CVWriteProgramStoppedInfo(conn, |
| 359 | instance_id, |
| 360 | 0, /* XXX - breakpoint # or signal # */ |
| 361 | CDebuggerCommand, |
| 362 | funcname, |
| 363 | "" /* XXX ? transcript */ |
| 364 | ); |
| 365 | |
| 366 | if (filename) |
| 367 | free(filename); |
| 368 | } |
| 369 | |
| 370 | /* Call this to output annotated function names. Names will be demangled if |
| 371 | necessary. arg_mode contains flags that are passed on to cplus_demangle. */ |
| 372 | |
| 373 | void |
| 374 | cadillac_annotate_function(funcname, arg_mode, level) |
| 375 | char *funcname; |
| 376 | int arg_mode; |
| 377 | int level; |
| 378 | { |
| 379 | extern int demangle; |
| 380 | char *demangled_name = NULL; |
| 381 | |
| 382 | |
| 383 | if (funcname == NULL) |
| 384 | return; |
| 385 | |
| 386 | if (demangle) |
| 387 | { |
| 388 | demangled_name = cplus_demangle(funcname, arg_mode); |
| 389 | |
| 390 | if (demangled_name) |
| 391 | funcname = demangled_name; |
| 392 | } |
| 393 | |
| 394 | send_stack_info(); |
| 395 | |
| 396 | if (level < 0) level = 0; |
| 397 | |
| 398 | CVWriteBackTraceEntryInfo(conn, |
| 399 | instance_id, |
| 400 | level, /* frameNo */ |
| 401 | funcname); |
| 402 | |
| 403 | if (demangled_name) |
| 404 | free(demangled_name); |
| 405 | } |
| 406 | |
| 407 | /* Call this just prior to printing out the name & value of a variable. This |
| 408 | tells the kernel where to annotate the output. */ |
| 409 | |
| 410 | /* The args are: |
| 411 | expression - A text handle on what GDB can use to reference this value. |
| 412 | This can be a symbol name, or a convenience var, etc... |
| 413 | symbol - Used to determine the scope of the data. May be NULL. |
| 414 | type - Determines if we have a pointer ref, and the print name of the type. |
| 415 | Used in ShowValue message. |
| 416 | valaddr - The address in target memory of the data. |
| 417 | field - The field name of the struct or union element being referenced. |
| 418 | */ |
| 419 | |
| 420 | static char cum_expr[200]; /* Cumulative expression */ |
| 421 | static char *expr_stack[100] = {cum_expr}; /* Pointers to end of expressions */ |
| 422 | static char **last_expr = expr_stack; /* Current expr stack pointer */ |
| 423 | |
| 424 | void |
| 425 | cadillac_start_variable_annotation(expression, symbol, type, valaddr, field) |
| 426 | char *expression; |
| 427 | struct symbol *symbol; |
| 428 | struct type *type; |
| 429 | CORE_ADDR valaddr; |
| 430 | char *field; |
| 431 | { |
| 432 | int ref_type; |
| 433 | int stor_cl; |
| 434 | enum type_code type_code; |
| 435 | enum address_class sym_class; |
| 436 | char *type_cast; |
| 437 | |
| 438 | send_stack_info(); |
| 439 | |
| 440 | strcpy(*last_expr++, expression); |
| 441 | *last_expr = *(last_expr-1) + strlen(expression); |
| 442 | |
| 443 | switch (TYPE_CODE(type)) |
| 444 | { |
| 445 | case TYPE_CODE_ARRAY: |
| 446 | case TYPE_CODE_STRUCT: |
| 447 | case TYPE_CODE_UNION: |
| 448 | case TYPE_CODE_ENUM: |
| 449 | case TYPE_CODE_INT: |
| 450 | case TYPE_CODE_FLT: |
| 451 | ref_type = CValueValueRef; |
| 452 | break; |
| 453 | case TYPE_CODE_PTR: |
| 454 | ref_type = CValuePointerRef; |
| 455 | break; |
| 456 | default: |
| 457 | ref_type = CValueUndefRef; |
| 458 | break; |
| 459 | } |
| 460 | |
| 461 | /* Make sure that pointer points at something we understand */ |
| 462 | |
| 463 | if (ref_type == CValuePointerRef) |
| 464 | switch (TYPE_CODE(TYPE_TARGET_TYPE(type))) |
| 465 | { |
| 466 | case TYPE_CODE_PTR: |
| 467 | case TYPE_CODE_ARRAY: |
| 468 | case TYPE_CODE_STRUCT: |
| 469 | case TYPE_CODE_UNION: |
| 470 | case TYPE_CODE_ENUM: |
| 471 | case TYPE_CODE_INT: |
| 472 | case TYPE_CODE_FLT: |
| 473 | break; |
| 474 | default: |
| 475 | ref_type = CValueUndefRef; |
| 476 | break; |
| 477 | } |
| 478 | |
| 479 | if (symbol) |
| 480 | { |
| 481 | sym_class = SYMBOL_CLASS(symbol); |
| 482 | |
| 483 | switch (sym_class) |
| 484 | { |
| 485 | case LOC_CONST: |
| 486 | case LOC_CONST_BYTES: |
| 487 | stor_cl = CValueStorStaticConst; |
| 488 | break; |
| 489 | case LOC_STATIC: |
| 490 | stor_cl = CValueStorStaticVar; |
| 491 | break; |
| 492 | case LOC_REGISTER: |
| 493 | case LOC_REGPARM: |
| 494 | stor_cl = CValueStorRegister; |
| 495 | break; |
| 496 | case LOC_ARG: |
| 497 | case LOC_REF_ARG: |
| 498 | case LOC_LOCAL: |
| 499 | case LOC_LOCAL_ARG: |
| 500 | stor_cl = CValueStorLocalVar; |
| 501 | break; |
| 502 | default: |
| 503 | stor_cl = CValueStorUndef; |
| 504 | break; |
| 505 | } |
| 506 | } |
| 507 | else |
| 508 | stor_cl = CValueStorUndef; |
| 509 | |
| 510 | type_cast = TYPE_NAME(type); |
| 511 | |
| 512 | CVWriteValueBeginInfo(conn, |
| 513 | instance_id, |
| 514 | valaddr, |
| 515 | ref_type, |
| 516 | stor_cl, |
| 517 | 0, /* XXX - frameno */ |
| 518 | cum_expr, |
| 519 | field, |
| 520 | type_cast, |
| 521 | ""); /* transcript */ |
| 522 | } |
| 523 | |
| 524 | void |
| 525 | cadillac_end_variable_annotation() |
| 526 | { |
| 527 | last_expr--; /* Pop the expr stack */ |
| 528 | **last_expr = '\000'; /* Cut off the last part of the expr */ |
| 529 | |
| 530 | CVWriteValueEndInfo(conn, |
| 531 | instance_id, |
| 532 | ""); /* transcript */ |
| 533 | } |
| 534 | \f |
| 535 | /* Tell the kernel that the target is now running. */ |
| 536 | |
| 537 | static void |
| 538 | go_busy() |
| 539 | { |
| 540 | CVWriteProgramBusyInfo(conn, |
| 541 | instance_id, |
| 542 | ""); /* XXX ? transcript */ |
| 543 | CWriteRequestBuffer(conn); /* Must take place synchronusly! */ |
| 544 | stack_info_valid = 0; |
| 545 | } |
| 546 | |
| 547 | \f |
| 548 | void |
| 549 | cadillac_symbol_file(objfile) |
| 550 | struct objfile *objfile; |
| 551 | { |
| 552 | CVWriteSymbolTableInfo(conn, |
| 553 | objfile->name, |
| 554 | ""); /* Transcript */ |
| 555 | } |
| 556 | |
| 557 | /* execute_command_1(echo, queue, cmd, args) - echo - non-zero means echo the |
| 558 | command. queue - non-zero means don't execute it now, just save it away for |
| 559 | later. cmd - string containing printf control sequences. args - list of |
| 560 | arguments needed by those control sequences. |
| 561 | */ |
| 562 | |
| 563 | /* Linked list of queued up commands */ |
| 564 | static struct command_line *queued_commands = 0; |
| 565 | static struct command_line *last_queued_command = 0; |
| 566 | |
| 567 | /* Call this routine to save a command for later. The command string is |
| 568 | copied into freshly malloc'ed memory. */ |
| 569 | |
| 570 | static void |
| 571 | queue_command(cmd) |
| 572 | char *cmd; |
| 573 | { |
| 574 | char *buf; |
| 575 | struct command_line *cl; |
| 576 | unsigned long s; |
| 577 | |
| 578 | s = (strlen(cmd) + 1) + 7 & ~(unsigned long)7; |
| 579 | |
| 580 | buf = (char *)xmalloc(s + sizeof(struct command_line)); |
| 581 | cl = (struct command_line *)(buf + s); |
| 582 | cl->next = 0; |
| 583 | cl->line = buf; |
| 584 | |
| 585 | strncpy(cl->line, cmd, s); |
| 586 | |
| 587 | if (queued_commands) |
| 588 | last_queued_command->next = cl; |
| 589 | else |
| 590 | queued_commands = cl; |
| 591 | |
| 592 | last_queued_command = cl; |
| 593 | } |
| 594 | |
| 595 | /* Call this procedure to take a command off of the command queue. It returns |
| 596 | a pointer to a buf which the caller is responsible for freeing. NULL is |
| 597 | returned if there are no commands queued. */ |
| 598 | |
| 599 | static char * |
| 600 | dequeue_command() |
| 601 | { |
| 602 | struct command_line *cl; |
| 603 | char *cmd; |
| 604 | |
| 605 | cl = queued_commands; |
| 606 | |
| 607 | if (!cl) |
| 608 | return NULL; |
| 609 | |
| 610 | queued_commands = cl->next; |
| 611 | |
| 612 | return cl->line; |
| 613 | } |
| 614 | |
| 615 | static void |
| 616 | execute_command_1(va_alist) |
| 617 | va_dcl |
| 618 | { |
| 619 | char buf[100]; /* XXX - make buf dynamic! */ |
| 620 | |
| 621 | int echo; |
| 622 | int queue; |
| 623 | char *cmd; |
| 624 | va_list args; |
| 625 | |
| 626 | va_start(args); |
| 627 | |
| 628 | echo = va_arg(args, int); |
| 629 | queue = va_arg(args, int); |
| 630 | cmd = va_arg(args, char *); |
| 631 | |
| 632 | vsprintf(buf, cmd, args); |
| 633 | |
| 634 | if (queue) |
| 635 | queue_command(buf); |
| 636 | else |
| 637 | { |
| 638 | if (echo) |
| 639 | printf_filtered("%s\n", buf); |
| 640 | execute_command(buf, 1); |
| 641 | } |
| 642 | |
| 643 | va_end(args); |
| 644 | } |
| 645 | |
| 646 | #ifdef KERNEL_RECORD |
| 647 | FILE *kerout; |
| 648 | |
| 649 | static int |
| 650 | kernel_record(fd, ptr, num) |
| 651 | int fd, num; |
| 652 | char *ptr; |
| 653 | |
| 654 | { |
| 655 | fwrite(ptr, num, 1, kerout); |
| 656 | fflush(kerout); |
| 657 | return write(fd, ptr, num); |
| 658 | } |
| 659 | #endif |
| 660 | |
| 661 | void |
| 662 | cadillac_condition_breakpoint(b) |
| 663 | struct breakpoint *b; |
| 664 | { |
| 665 | CVWriteBreakConditionInfo(conn, |
| 666 | instance_id, |
| 667 | b->number, |
| 668 | b->cond_string ? b->cond_string : "", |
| 669 | "" /* transcript */ |
| 670 | ); |
| 671 | } |
| 672 | |
| 673 | void |
| 674 | cadillac_commands_breakpoint(b) |
| 675 | struct breakpoint *b; |
| 676 | { |
| 677 | struct command_line *l; |
| 678 | |
| 679 | CVWriteBreakCommandBegInfo(conn, |
| 680 | instance_id, |
| 681 | b->number, |
| 682 | ""); /* transcript */ |
| 683 | |
| 684 | for (l = b->commands; l; l = l->next) |
| 685 | CVWriteBreakCommandEntryInfo(conn, |
| 686 | instance_id, |
| 687 | l->line, |
| 688 | ""); /* transcript */ |
| 689 | |
| 690 | CVWriteBreakCommandEndInfo(conn, |
| 691 | instance_id, |
| 692 | ""); /* transcript */ |
| 693 | } |
| 694 | |
| 695 | static void |
| 696 | breakpoint_notify(b, action) |
| 697 | struct breakpoint *b; |
| 698 | int action; |
| 699 | { |
| 700 | struct symbol *sym; |
| 701 | char *funcname = ""; |
| 702 | char *filename; |
| 703 | char *included_in_filename = ""; |
| 704 | |
| 705 | if (b->type != bp_breakpoint) |
| 706 | return; |
| 707 | |
| 708 | filename = full_filename(b->symtab); |
| 709 | |
| 710 | sym = find_pc_function(b->address); |
| 711 | if (sym) |
| 712 | funcname = SYMBOL_NAME(sym); |
| 713 | |
| 714 | CVWriteBreakpointInfo (conn, |
| 715 | instance_id, |
| 716 | b->number, |
| 717 | b->line_number, |
| 718 | CFileLinePos, |
| 719 | CBreakOnInstrAccess, |
| 720 | action, |
| 721 | b->ignore_count, |
| 722 | funcname, |
| 723 | filename ? filename : "", |
| 724 | "", /* included_in_filename */ |
| 725 | "" /* transcript */ |
| 726 | ); |
| 727 | |
| 728 | if (b->commands) |
| 729 | cadillac_commands_breakpoint(b); |
| 730 | |
| 731 | cadillac_condition_breakpoint(b); |
| 732 | |
| 733 | if (filename) |
| 734 | free(filename); |
| 735 | } |
| 736 | |
| 737 | void |
| 738 | cadillac_create_breakpoint(b) |
| 739 | struct breakpoint *b; |
| 740 | { |
| 741 | breakpoint_notify(b, CEnableBreakpoint); |
| 742 | } |
| 743 | |
| 744 | void |
| 745 | cadillac_delete_breakpoint(b) |
| 746 | struct breakpoint *b; |
| 747 | { |
| 748 | breakpoint_notify(b, CDeleteBreakpoint); |
| 749 | } |
| 750 | |
| 751 | void |
| 752 | cadillac_enable_breakpoint(b) |
| 753 | struct breakpoint *b; |
| 754 | { |
| 755 | breakpoint_notify(b, CEnableBreakpoint); |
| 756 | } |
| 757 | |
| 758 | void |
| 759 | cadillac_disable_breakpoint(b) |
| 760 | struct breakpoint *b; |
| 761 | { |
| 762 | breakpoint_notify(b, CDisableBreakpoint); |
| 763 | } |
| 764 | |
| 765 | void |
| 766 | cadillac_ignore_breakpoint(b) |
| 767 | struct breakpoint *b; |
| 768 | { |
| 769 | breakpoint_notify(b, CBreakAttrUnchanged); |
| 770 | } |
| 771 | \f |
| 772 | /* Open up a pty and its associated tty. Return the fd of the tty. */ |
| 773 | |
| 774 | static void |
| 775 | getpty() |
| 776 | { |
| 777 | int n, ptyfd, ttyfd; |
| 778 | static char dev[30]; |
| 779 | struct stat statbuf; |
| 780 | struct termios termios; |
| 781 | |
| 782 | #define HIGHPTY (('z' - 'p') * 16 - 1) |
| 783 | |
| 784 | for (n = 0; n <= HIGHPTY; n++) |
| 785 | { |
| 786 | sprintf(dev, "/dev/pty%c%x", n/16 + 'p', n%16); |
| 787 | if (stat(dev, &statbuf)) |
| 788 | break; |
| 789 | ptyfd = open(dev, O_RDWR); |
| 790 | if (ptyfd < 0) |
| 791 | continue; |
| 792 | sprintf(dev, "/dev/tty%c%x", n/16 + 'p', n%16); |
| 793 | ttyfd = open(dev, O_RDWR); |
| 794 | if (ttyfd < 0) {close(ptyfd); continue;} |
| 795 | |
| 796 | /* Setup pty for non-blocking I/O. Also make it give us a SIGIO when |
| 797 | there's data available. */ |
| 798 | |
| 799 | n = fcntl(ptyfd, F_GETFL, 0); |
| 800 | fcntl(ptyfd, F_SETFL, n|FNDELAY|FASYNC); |
| 801 | fcntl(ptyfd, F_SETOWN, getpid()); |
| 802 | |
| 803 | tcgetattr(ttyfd, &termios); |
| 804 | termios.c_oflag &= ~OPOST; /* No post-processing */ |
| 805 | tcsetattr(ttyfd, TCSANOW, &termios); |
| 806 | |
| 807 | inferior_pty = ptyfd; |
| 808 | inferior_tty = ttyfd; |
| 809 | return; |
| 810 | } |
| 811 | |
| 812 | error ("getpty: can't get a pty\n"); |
| 813 | } |
| 814 | \f |
| 815 | /* Examine a protocol packet from the driver. */ |
| 816 | |
| 817 | static void |
| 818 | kernel_dispatch(queue) |
| 819 | int queue; /* Non-zero means we should just queue up |
| 820 | commands. */ |
| 821 | { |
| 822 | register CHeader *head; |
| 823 | |
| 824 | head = (CHeader *)CPeekNextRequest (conn); |
| 825 | if (head == NULL) |
| 826 | { |
| 827 | fprintf (stderr, "EOF on kernel read!\n"); |
| 828 | exit (1); |
| 829 | } |
| 830 | |
| 831 | if (head->reqType < LastTtyRequestRType) |
| 832 | { |
| 833 | CTtyRequest* req = CReadTtyRequest (conn); |
| 834 | switch (req->head.reqType) |
| 835 | { |
| 836 | case AcceptConnectionRType: |
| 837 | /* Tell the rest of the world that cadillac is now set up */ |
| 838 | CSkipRequest (conn); |
| 839 | break; |
| 840 | |
| 841 | case RefuseConnectionRType: |
| 842 | fprintf (stderr, "Debugger connection refused\n"); |
| 843 | exit (1); |
| 844 | |
| 845 | case KillProgramRType: |
| 846 | exit (0); |
| 847 | |
| 848 | case TextIORType: |
| 849 | { |
| 850 | char *p; |
| 851 | ReqLen len; |
| 852 | |
| 853 | p = CGetVstring(conn, &len); |
| 854 | kernel_to_pty(p, len); |
| 855 | } |
| 856 | break; |
| 857 | default: |
| 858 | fprintf(stderr, "Unknown request type = %d\n", |
| 859 | req->head.reqType); |
| 860 | break; |
| 861 | } |
| 862 | } |
| 863 | else |
| 864 | { |
| 865 | CVDebuggerRequest *req = CVReadDebuggerRequest (conn); |
| 866 | if (!req) |
| 867 | { |
| 868 | fprintf (stderr, "CVReadDebuggerRequest returned NULL, type = %d\n", |
| 869 | head->reqType); |
| 870 | exit(1); |
| 871 | } |
| 872 | |
| 873 | switch (req->head.request->reqType) |
| 874 | { |
| 875 | case OpenProgramInstanceRType: |
| 876 | { |
| 877 | char *arglist, buf[100]; /* XXX - Make buf dynamic! */ |
| 878 | int arglen; |
| 879 | /* XXX - should notice when program_id changes */ |
| 880 | arglist = req->openProgramInstance.progArglist.text; |
| 881 | arglen = req->openProgramInstance.progArglist.byteLen; |
| 882 | |
| 883 | execute_command_1(1, queue, "break main"); |
| 884 | execute_command_1(1, queue, "enable delete $bpnum"); |
| 885 | if (arglist) |
| 886 | { |
| 887 | execute_command_1(1, queue, "set args %.*s", arglen, arglist); |
| 888 | } |
| 889 | execute_command_1(1, queue, "run"); |
| 890 | } |
| 891 | break; |
| 892 | case SearchPathRType: |
| 893 | directory_command(req->searchPath.searchPath.text, 0); |
| 894 | break; |
| 895 | case QuitDebuggerRType: |
| 896 | execute_command_1(1, queue, "quit"); |
| 897 | break; |
| 898 | case RunRType: |
| 899 | if (req->run.request->useArglist == CNewArglist) |
| 900 | { |
| 901 | execute_command_1(1, queue, "set args %.*s", |
| 902 | req->run.progArglist.byteLen, |
| 903 | req->run.progArglist.text); |
| 904 | } |
| 905 | execute_command_1(1, queue, "run"); |
| 906 | break; |
| 907 | case ContinueRType: |
| 908 | execute_command_1(1, queue, "continue"); |
| 909 | break; |
| 910 | case StepRType: |
| 911 | execute_command_1(1, queue, "step %d", req->step.request->stepCount); |
| 912 | break; |
| 913 | case NextRType: |
| 914 | execute_command_1(1, queue, "next %d", req->next.request->nextCount); |
| 915 | break; |
| 916 | case ChangeStackFrameRType: |
| 917 | switch (req->changeStackFrame.request->frameMovement) |
| 918 | { |
| 919 | case CToCurrentStackFrame: |
| 920 | execute_command_1(1, queue, "frame %d", |
| 921 | req->changeStackFrame.request->frameNo); |
| 922 | break; |
| 923 | case CToInnerStackFrame: |
| 924 | execute_command_1(1, queue, "down %d", |
| 925 | req->changeStackFrame.request->frameNo); |
| 926 | break; |
| 927 | case CToOuterStackFrame: |
| 928 | execute_command_1(1, queue, "up %d", |
| 929 | req->changeStackFrame.request->frameNo); |
| 930 | break; |
| 931 | case CToAbsoluteStackFrame: |
| 932 | execute_command_1(1, queue, "frame %d", |
| 933 | req->changeStackFrame.request->frameNo); |
| 934 | break; |
| 935 | } |
| 936 | break; |
| 937 | case BackTraceRType: |
| 938 | /* XXX - deal with limit??? */ |
| 939 | execute_command_1(1, queue, "backtrace"); |
| 940 | break; |
| 941 | case FinishRType: |
| 942 | execute_command_1(1, queue, "finish"); |
| 943 | break; |
| 944 | case TerminateProgramRType: |
| 945 | execute_command_1(1, queue, "kill"); |
| 946 | break; |
| 947 | case NewBreakpointRType: |
| 948 | { |
| 949 | char *tail; |
| 950 | int skipped; |
| 951 | |
| 952 | tail = strrchr(req->newBreakpoint.fileName.text, '/'); |
| 953 | if (!tail) |
| 954 | tail = req->newBreakpoint.fileName.text; |
| 955 | else |
| 956 | tail++; |
| 957 | skipped = tail - req->newBreakpoint.fileName.text; |
| 958 | execute_command_1(1, queue, "break %.*s:%d", |
| 959 | req->newBreakpoint.fileName.byteLen - skipped, |
| 960 | tail, |
| 961 | req->newBreakpoint.request->fileLinePos); |
| 962 | } |
| 963 | break; |
| 964 | case StopRType: |
| 965 | killpg(pgrp_inferior, SIGINT); |
| 966 | break; |
| 967 | case UserInputRType: |
| 968 | { |
| 969 | char *text; |
| 970 | long len; |
| 971 | |
| 972 | /* XXX - should really break command up into seperate lines |
| 973 | and spoon-feed it to execute_command */ |
| 974 | |
| 975 | text = req->userInput.userInput.text; |
| 976 | len = req->userInput.userInput.byteLen; |
| 977 | |
| 978 | if (text[len-1] == '\n') text[len-1] = '\000'; |
| 979 | |
| 980 | while (*text == ' ' || *text == '\t') text++; |
| 981 | |
| 982 | if (strcmp(text, "]*[") == 0) /* XXX - What does this mean??? */ |
| 983 | break; |
| 984 | |
| 985 | if (*text != '\000') |
| 986 | execute_command_1(0, queue, "%s", text); |
| 987 | else |
| 988 | print_prompt(); /* User just typed a blank line */ |
| 989 | } |
| 990 | break; |
| 991 | case QueryResponseRType: |
| 992 | { |
| 993 | char *resp; |
| 994 | |
| 995 | if (req->queryResponse.request->response) |
| 996 | resp = "y"; |
| 997 | else |
| 998 | resp = "n"; |
| 999 | execute_command_1(1, 1, resp); |
| 1000 | printf_filtered("%s\n", resp); |
| 1001 | } |
| 1002 | break; |
| 1003 | case ChangeBreakpointRType: |
| 1004 | switch (req->changeBreakpoint.request->breakpointAttr) |
| 1005 | { |
| 1006 | case CBreakAttrUnchanged: |
| 1007 | execute_command_1(1, queue, "ignore %d %d", |
| 1008 | req->changeBreakpoint.request->breakpointId, |
| 1009 | req->changeBreakpoint.request->ignoreCount); |
| 1010 | break; |
| 1011 | case CEnableBreakpoint: |
| 1012 | execute_command_1(1, queue, "enable %d", |
| 1013 | req->changeBreakpoint.request->breakpointId); |
| 1014 | break; |
| 1015 | case CDisableBreakpoint: |
| 1016 | execute_command_1(1, queue, "disable %d", |
| 1017 | req->changeBreakpoint.request->breakpointId); |
| 1018 | break; |
| 1019 | case CDeleteBreakpoint: |
| 1020 | execute_command_1(1, queue, "delete %d", |
| 1021 | req->changeBreakpoint.request->breakpointId); |
| 1022 | break; |
| 1023 | case CEnableDisableBreakpoint: |
| 1024 | execute_command_1(1, queue, "enable once %d", |
| 1025 | req->changeBreakpoint.request->breakpointId); |
| 1026 | break; |
| 1027 | case CEnableDeleteBreakpoint: |
| 1028 | execute_command_1(1, queue, "enable delete %d", |
| 1029 | req->changeBreakpoint.request->breakpointId); |
| 1030 | break; |
| 1031 | default: |
| 1032 | printf_filtered("ChangeBreakpointRType: unknown breakpointAttr\n"); |
| 1033 | printf_filtered(" breakpointAttr = %d\n", |
| 1034 | req->changeBreakpoint.request->breakpointAttr); |
| 1035 | printf_filtered(" breakpointId = %d\n", |
| 1036 | req->changeBreakpoint.request->breakpointId); |
| 1037 | printf_filtered(" breakpointType = %d\n", |
| 1038 | req->changeBreakpoint.request->breakpointType); |
| 1039 | printf_filtered(" ignoreCount = %d\n", |
| 1040 | req->changeBreakpoint.request->ignoreCount); |
| 1041 | break; |
| 1042 | } |
| 1043 | break; |
| 1044 | case BreakConditionRType: |
| 1045 | execute_command_1(1, queue, "condition %d %.*s", |
| 1046 | req->breakCondition.request->breakpointId, |
| 1047 | req->breakCondition.condition.byteLen, |
| 1048 | req->breakCondition.condition.text); |
| 1049 | break; |
| 1050 | case BreakCommandsRType: |
| 1051 | /* Put pointers to where cadillac_command_line_input() can find |
| 1052 | them. */ |
| 1053 | doing_breakcommands_message = 1; |
| 1054 | command_line_length = req->breakCommands.commands.byteLen; |
| 1055 | command_line_text = req->breakCommands.commands.text; |
| 1056 | execute_command_1(1, queue, "commands %d", |
| 1057 | req->breakCommands.request->breakpointId); |
| 1058 | command_line_text = (char *)NULL; |
| 1059 | command_line_length = 0; |
| 1060 | doing_breakcommands_message = 0; |
| 1061 | break; |
| 1062 | case ShowValueRType: |
| 1063 | { |
| 1064 | char expr[100], *p = expr; |
| 1065 | |
| 1066 | expr[0] = 0; |
| 1067 | |
| 1068 | if (req->showValue.request->ref_type == CValuePointerRef) |
| 1069 | strcat(expr, "* "); |
| 1070 | |
| 1071 | if (req->showValue.type_cast.byteLen) |
| 1072 | { |
| 1073 | strcat(expr, "("); |
| 1074 | strncat(expr, req->showValue.type_cast.text, |
| 1075 | req->showValue.type_cast.byteLen); |
| 1076 | strcat(expr, ") "); |
| 1077 | } |
| 1078 | |
| 1079 | if (req->showValue.field.byteLen) |
| 1080 | strcat(expr, "("); |
| 1081 | |
| 1082 | strncat(expr, req->showValue.expression.text, |
| 1083 | req->showValue.expression.byteLen); |
| 1084 | |
| 1085 | if (req->showValue.field.byteLen) |
| 1086 | { |
| 1087 | strcat(expr, ")"); |
| 1088 | |
| 1089 | strncat(expr, req->showValue.field.text, |
| 1090 | req->showValue.field.byteLen); |
| 1091 | } |
| 1092 | |
| 1093 | execute_command_1(1, queue, "print %s", expr); |
| 1094 | } |
| 1095 | break; |
| 1096 | case SetValueRType: |
| 1097 | { |
| 1098 | char expr[100], *p = expr; |
| 1099 | |
| 1100 | expr[0] = 0; |
| 1101 | |
| 1102 | if (req->setValue.request->ref_type == CValuePointerRef) |
| 1103 | strcat(expr, "* "); |
| 1104 | |
| 1105 | #if 0 |
| 1106 | if (req->setValue.type_cast.byteLen) |
| 1107 | { |
| 1108 | strcat(expr, "("); |
| 1109 | strncat(expr, req->setValue.type_cast.text, |
| 1110 | req->setValue.type_cast.byteLen); |
| 1111 | strcat(expr, ") "); |
| 1112 | } |
| 1113 | #endif |
| 1114 | if (req->setValue.field.byteLen) |
| 1115 | strcat(expr, "("); |
| 1116 | |
| 1117 | strncat(expr, req->setValue.expression.text, |
| 1118 | req->setValue.expression.byteLen); |
| 1119 | |
| 1120 | if (req->setValue.field.byteLen) |
| 1121 | { |
| 1122 | strcat(expr, ")"); |
| 1123 | |
| 1124 | strncat(expr, req->setValue.field.text, |
| 1125 | req->setValue.field.byteLen); |
| 1126 | } |
| 1127 | |
| 1128 | execute_command_1(1, queue, "print %s = (%s) %s", expr, |
| 1129 | req->setValue.type_cast.text, |
| 1130 | req->setValue.value.text); |
| 1131 | } |
| 1132 | break; |
| 1133 | default: |
| 1134 | fprintf(stderr, "Unknown request type = %d\n", |
| 1135 | req->head.request->reqType); |
| 1136 | break; |
| 1137 | } |
| 1138 | free (req); /* Should probably call CVFreeDebuggerRequest() here, but |
| 1139 | can't do so if interrupt level has mucked with req-> |
| 1140 | request. CVFreeDebuggerRequest() only ends up calling |
| 1141 | free() anyway! */ |
| 1142 | } |
| 1143 | } |
| 1144 | \f |
| 1145 | /* Return a bitmask indicating if the kernel or the pty did something |
| 1146 | interesting. Set poll to non-zero if you don't want to wait. */ |
| 1147 | |
| 1148 | static int |
| 1149 | wait_for_events(poll) |
| 1150 | int poll; |
| 1151 | { |
| 1152 | fd_set readfds; |
| 1153 | int numfds; |
| 1154 | int eventmask = 0; |
| 1155 | static struct timeval tv = {0}; |
| 1156 | |
| 1157 | /* Output all pending requests. */ |
| 1158 | CWriteRequestBuffer(conn); |
| 1159 | |
| 1160 | FD_ZERO(&readfds); |
| 1161 | |
| 1162 | /* Wait till there's some activity from the kernel or the pty. */ |
| 1163 | do |
| 1164 | { |
| 1165 | FD_SET(kerfd, &readfds); |
| 1166 | if (inferior_pty > 0) |
| 1167 | FD_SET(inferior_pty, &readfds); |
| 1168 | if (poll) |
| 1169 | numfds = select(sizeof(readfds)*8, &readfds, 0, 0, &tv); |
| 1170 | else |
| 1171 | numfds = select(sizeof(readfds)*8, &readfds, 0, 0, 0); |
| 1172 | } |
| 1173 | while (numfds <= 0 && !poll); |
| 1174 | |
| 1175 | if (FD_ISSET(inferior_pty, &readfds)) |
| 1176 | eventmask |= PTY_EVENT; |
| 1177 | |
| 1178 | if (FD_ISSET(kerfd, &readfds)) |
| 1179 | eventmask |= KERNEL_EVENT; |
| 1180 | |
| 1181 | return eventmask; |
| 1182 | } |
| 1183 | \f |
| 1184 | /* This is called from read_command_lines() to provide the text for breakpoint |
| 1185 | commands, which is supplied in a BreakCommands message. Each call to this |
| 1186 | routine supplies a single line of text, with the newline removed. */ |
| 1187 | |
| 1188 | /* This routine may be invoked in two different contexts. In the first, it |
| 1189 | is being called as a result of the BreakCommands message. In this case, |
| 1190 | all of the command text is immediately available. In the second case, it is |
| 1191 | called as a result of the user typing the 'command' command. The command |
| 1192 | text then needs to be glommed out of UserInput messages (and possibly other |
| 1193 | messages as well). The most 'straighforward' way of doing this is to |
| 1194 | basically simulate the main loop, but just accumulate the command text |
| 1195 | instead of sending it to execute_command(). */ |
| 1196 | |
| 1197 | char * |
| 1198 | cadillac_command_line_input() |
| 1199 | { |
| 1200 | char *p; |
| 1201 | |
| 1202 | if (doing_breakcommands_message) |
| 1203 | { |
| 1204 | if (command_line_length <= 0) |
| 1205 | return (char *)NULL; |
| 1206 | |
| 1207 | p = command_line_text; |
| 1208 | |
| 1209 | while (command_line_length-- > 0) |
| 1210 | { |
| 1211 | if (*command_line_text == '\n') |
| 1212 | { |
| 1213 | *command_line_text = '\000'; |
| 1214 | command_line_text++; |
| 1215 | break; |
| 1216 | } |
| 1217 | command_line_text++; |
| 1218 | } |
| 1219 | |
| 1220 | printf_filtered("%s\n", p); |
| 1221 | return p; |
| 1222 | } |
| 1223 | else |
| 1224 | { |
| 1225 | /* We come here when the user has typed the 'command' or 'define' command |
| 1226 | to the GDB window. We are basically deep inside of the 'command' |
| 1227 | command processing routine right now, and will be called to get a new |
| 1228 | line of input. We expect that kernel_dispatch will queue up only one |
| 1229 | command at a time. */ |
| 1230 | |
| 1231 | int eventmask; |
| 1232 | static char buf[100]; |
| 1233 | |
| 1234 | eventmask = wait_for_events(0); |
| 1235 | |
| 1236 | if (eventmask & PTY_EVENT) |
| 1237 | pty_to_kernel(); |
| 1238 | |
| 1239 | if (eventmask & KERNEL_EVENT) |
| 1240 | kernel_dispatch(1); /* Queue up commands */ |
| 1241 | |
| 1242 | /* Note that command has been echoed by the time we get here */ |
| 1243 | |
| 1244 | p = dequeue_command(); |
| 1245 | |
| 1246 | if (p) |
| 1247 | { |
| 1248 | strncpy(buf, p, sizeof(buf)); |
| 1249 | free(p); |
| 1250 | return buf; |
| 1251 | } |
| 1252 | else |
| 1253 | return NULL; |
| 1254 | } |
| 1255 | } |
| 1256 | \f |
| 1257 | /* Establish contact with the kernel. */ |
| 1258 | |
| 1259 | void |
| 1260 | cadillac_initialize(cadillac_id, execarg) |
| 1261 | char *cadillac_id; |
| 1262 | char *execarg; |
| 1263 | { |
| 1264 | CTtyRequest *req; |
| 1265 | char *ctmp; |
| 1266 | extern long strtol(char *str, char **ptr, int base); |
| 1267 | char pathname[MAXPATHLEN]; |
| 1268 | int n; |
| 1269 | |
| 1270 | if (!execarg) execarg = ""; |
| 1271 | |
| 1272 | printf("gdb-debugger pid=%d\n", getpid()); /* XXX - debugging only */ |
| 1273 | |
| 1274 | /* First establish the connection with the kernel. */ |
| 1275 | |
| 1276 | kerfd = COpenClientSocket(NULL); |
| 1277 | if (kerfd < 0) { |
| 1278 | printf("COpenClientSocket() failed\n"); |
| 1279 | exit(1); |
| 1280 | } |
| 1281 | |
| 1282 | /* Setup for I/O interrupts when appropriate. */ |
| 1283 | |
| 1284 | n = fcntl(kerfd, F_GETFL, 0); |
| 1285 | fcntl(kerfd, F_SETFL, n|FASYNC); |
| 1286 | fcntl(kerfd, F_SETOWN, getpid()); |
| 1287 | |
| 1288 | /* Setup connection buffering. */ |
| 1289 | |
| 1290 | CSetSocketBufferSize (kerfd, 12000); |
| 1291 | |
| 1292 | /* Generate a new connection control block. */ |
| 1293 | |
| 1294 | conn = NewConnection (0, kerfd, kerfd); |
| 1295 | if (!conn) { |
| 1296 | printf("NewConnection() failed\n"); |
| 1297 | exit(1); |
| 1298 | } |
| 1299 | |
| 1300 | #ifdef KERNEL_RECORD |
| 1301 | kerout = fopen("kernel.output", "+w"); |
| 1302 | |
| 1303 | CReadWriteHooks(conn, conn->previewMethod, conn->readMethod, kernel_record); |
| 1304 | #endif |
| 1305 | |
| 1306 | /* Tell the kernel that we are the "debugger". */ |
| 1307 | |
| 1308 | req = CWriteTtyRequest (conn, QueryConnectionRType); |
| 1309 | req->generic.queryconnection.major = 0; |
| 1310 | req->generic.queryconnection.minor = 0; |
| 1311 | req->generic.queryconnection.cadillacId1=strtol(cadillac_id, &ctmp, 16); |
| 1312 | req->generic.queryconnection.cadillacId2 = strtol(++ctmp, NULL, 16); |
| 1313 | req->generic.queryconnection.nProtocols = 1; |
| 1314 | CWriteProtocol (conn, 0, 0, "debugger"); |
| 1315 | CWriteLength (conn); |
| 1316 | |
| 1317 | /* Tell the kernel that we are actually running. */ |
| 1318 | |
| 1319 | /* KROCK ALERT!!! The kernel doesn't really care about the arguments to |
| 1320 | the program at all! It only cares that argument 7 be the name of the |
| 1321 | target program. So, we just fill in the rest of the slots with |
| 1322 | padding. I hope the kernel never cares about this! */ |
| 1323 | |
| 1324 | req = CWriteTtyRequest (conn, RunningProgramRType); |
| 1325 | req->runningprogram.argc = 8; |
| 1326 | getwd (pathname); |
| 1327 | CWriteVstring0 (conn, pathname); |
| 1328 | |
| 1329 | CWriteVstring0 (conn, "0"); |
| 1330 | CWriteVstring0 (conn, "1"); |
| 1331 | CWriteVstring0 (conn, "2"); |
| 1332 | CWriteVstring0 (conn, "3"); |
| 1333 | CWriteVstring0 (conn, "4"); |
| 1334 | CWriteVstring0 (conn, "5"); |
| 1335 | CWriteVstring0 (conn, "6"); |
| 1336 | CWriteVstring0 (conn, execarg); |
| 1337 | CWriteLength (conn); |
| 1338 | |
| 1339 | /* Tell the kernel our PID and all that */ |
| 1340 | |
| 1341 | program_id = 1; |
| 1342 | CVWriteDebugProgramInfo(conn, |
| 1343 | getpid(), |
| 1344 | program_id, |
| 1345 | execarg, |
| 1346 | ""); |
| 1347 | |
| 1348 | /* Tell the rest of the world that Cadillac is now set up. */ |
| 1349 | cadillac = 1; |
| 1350 | |
| 1351 | setsid(); /* Drop controlling tty, become pgrp master */ |
| 1352 | getpty(); /* Setup the pty */ |
| 1353 | dup2(inferior_tty, 0); /* Attach all GDB I/O to the pty */ |
| 1354 | dup2(inferior_tty, 1); |
| 1355 | dup2(inferior_tty, 2); |
| 1356 | } |
| 1357 | |
| 1358 | /* This is called from execute_command, and provides a wrapper around |
| 1359 | various command routines in a place where both protocol messages and |
| 1360 | user input both flow through. |
| 1361 | */ |
| 1362 | |
| 1363 | void |
| 1364 | cadillac_call_command(cmdblk, arg, from_tty) |
| 1365 | struct cmd_list_element *cmdblk; |
| 1366 | char *arg; |
| 1367 | int from_tty; |
| 1368 | { |
| 1369 | if (cmdblk->class == class_run) |
| 1370 | { |
| 1371 | go_busy(); |
| 1372 | has_run = 1; |
| 1373 | (*cmdblk->function.cfunc)(arg, from_tty); |
| 1374 | send_status(); |
| 1375 | } |
| 1376 | else |
| 1377 | (*cmdblk->function.cfunc)(arg, from_tty); |
| 1378 | |
| 1379 | print_prompt(); |
| 1380 | } |
| 1381 | |
| 1382 | void |
| 1383 | cadillac_new_process() |
| 1384 | { |
| 1385 | instance_id = inferior_pid; |
| 1386 | } |
| 1387 | |
| 1388 | static void |
| 1389 | iosig(signo) |
| 1390 | int signo; |
| 1391 | { |
| 1392 | while (1) |
| 1393 | { |
| 1394 | int eventmask; |
| 1395 | |
| 1396 | eventmask = wait_for_events(1); |
| 1397 | |
| 1398 | if (eventmask == 0) |
| 1399 | return; |
| 1400 | |
| 1401 | if (eventmask & PTY_EVENT) |
| 1402 | pty_to_kernel(); |
| 1403 | |
| 1404 | if (eventmask & KERNEL_EVENT) |
| 1405 | kernel_dispatch(1); |
| 1406 | } |
| 1407 | } |
| 1408 | |
| 1409 | int |
| 1410 | cadillac_wait(status) |
| 1411 | int *status; |
| 1412 | { |
| 1413 | int pid; |
| 1414 | |
| 1415 | signal(SIGIO, iosig); |
| 1416 | |
| 1417 | pid = wait(status); |
| 1418 | |
| 1419 | signal(SIGIO, SIG_DFL); |
| 1420 | return pid; |
| 1421 | } |
| 1422 | |
| 1423 | static void |
| 1424 | null_routine(arg) |
| 1425 | int arg; |
| 1426 | { |
| 1427 | } |
| 1428 | |
| 1429 | /* All requests from the Cadillac kernel eventually end up here. */ |
| 1430 | |
| 1431 | void |
| 1432 | cadillac_main_loop() |
| 1433 | { |
| 1434 | CTtyRequest *req; |
| 1435 | struct cleanup *old_chain; |
| 1436 | |
| 1437 | doing_breakcommands_message = 0; |
| 1438 | |
| 1439 | /* We will come thru here any time there is an error, so send status if |
| 1440 | necessary. */ |
| 1441 | |
| 1442 | send_status(); |
| 1443 | |
| 1444 | print_prompt(); |
| 1445 | |
| 1446 | /* The actual event loop! */ |
| 1447 | |
| 1448 | while (1) |
| 1449 | { |
| 1450 | int eventmask; |
| 1451 | char *cmd; |
| 1452 | |
| 1453 | old_chain = make_cleanup(null_routine, 0); |
| 1454 | |
| 1455 | /* First, empty out the command queue, then check for new requests. */ |
| 1456 | |
| 1457 | while (cmd = dequeue_command()) |
| 1458 | { |
| 1459 | execute_command_1(1, 0, cmd); |
| 1460 | free(cmd); |
| 1461 | } |
| 1462 | |
| 1463 | eventmask = wait_for_events(0); |
| 1464 | |
| 1465 | if (eventmask & PTY_EVENT) |
| 1466 | pty_to_kernel(); |
| 1467 | |
| 1468 | if (eventmask & KERNEL_EVENT) |
| 1469 | kernel_dispatch(0); |
| 1470 | |
| 1471 | bpstat_do_actions(&stop_bpstat); |
| 1472 | do_cleanups(old_chain); |
| 1473 | } |
| 1474 | } |