| 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 "energize/connection.h" |
| 31 | #include "energize/genericreq.h" |
| 32 | #include "energize/debuggerreq.h" |
| 33 | #include "energize/debuggerconn.h" |
| 34 | #include "energize/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 energize interface. */ |
| 49 | int energize = 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 | /* The name of the executable file */ |
| 73 | static char *exec_file; |
| 74 | |
| 75 | /* Tell energize_command_line_input() where to get its text from */ |
| 76 | static int doing_breakcommands_message = 0; |
| 77 | |
| 78 | /* Stash command text here */ |
| 79 | static char *command_line_text = 0; |
| 80 | static int command_line_length = 0; |
| 81 | |
| 82 | /* Flags returned by wait_for_events() */ |
| 83 | #define KERNEL_EVENT 1 |
| 84 | #define PTY_EVENT 2 |
| 85 | |
| 86 | \f |
| 87 | /* This routine redirects the output of fputs_filtered to the kernel so that |
| 88 | the user can see what's going on in his debugger window. */ |
| 89 | |
| 90 | void |
| 91 | energize_fputs(ptr) |
| 92 | const char *ptr; |
| 93 | { |
| 94 | if (conn) |
| 95 | CVWriteTranscriptInfo (conn, instance_id, (char *)ptr); |
| 96 | else |
| 97 | fputs (ptr, stdout); |
| 98 | } |
| 99 | |
| 100 | void |
| 101 | energize_query(query, args) |
| 102 | char *query; |
| 103 | va_list args; |
| 104 | { |
| 105 | char buf[100]; |
| 106 | |
| 107 | if (!energize) |
| 108 | return; |
| 109 | |
| 110 | vsprintf(buf, query, args); |
| 111 | |
| 112 | CVWriteQueryInfo(conn, |
| 113 | instance_id, |
| 114 | CQueryConfirm, |
| 115 | qno_unknown, |
| 116 | buf, |
| 117 | ""); /* transcript */ |
| 118 | } |
| 119 | |
| 120 | void |
| 121 | energize_acknowledge_query(ack) |
| 122 | char *ack; |
| 123 | { |
| 124 | CVWriteQueryInfo(conn, |
| 125 | instance_id, |
| 126 | CQueryAcknowleged, |
| 127 | 0, |
| 128 | ack, |
| 129 | ""); /* transcript */ |
| 130 | } |
| 131 | |
| 132 | /* Copy all data from the pty to the kernel. */ |
| 133 | |
| 134 | static void |
| 135 | pty_to_kernel() |
| 136 | { |
| 137 | CTtyRequest *req; |
| 138 | char buf[1024]; |
| 139 | int cc; |
| 140 | |
| 141 | while (1) |
| 142 | { |
| 143 | cc = read(inferior_pty, buf, sizeof(buf)); |
| 144 | |
| 145 | if (cc == 0 |
| 146 | || (cc < 0 |
| 147 | && errno == EWOULDBLOCK)) |
| 148 | break; |
| 149 | |
| 150 | if (cc < 0) |
| 151 | { |
| 152 | close(inferior_pty); |
| 153 | inferior_pty = -1; |
| 154 | perror("pty read error"); |
| 155 | break; |
| 156 | } |
| 157 | |
| 158 | req = CWriteTtyRequest(conn, TextIORType); |
| 159 | CWriteVstringLen(conn, buf, cc); |
| 160 | CWriteLength(conn); |
| 161 | } |
| 162 | CWriteRequestBuffer(conn); |
| 163 | } |
| 164 | |
| 165 | /* Copy data from the kernel to the pty. */ |
| 166 | |
| 167 | static void |
| 168 | kernel_to_pty(data, len) |
| 169 | char *data; |
| 170 | int len; |
| 171 | { |
| 172 | int cc; |
| 173 | |
| 174 | cc = write(inferior_pty, data, len); |
| 175 | |
| 176 | if (cc != len) |
| 177 | { |
| 178 | if (cc < 0) |
| 179 | { |
| 180 | close(inferior_pty); |
| 181 | inferior_pty = -1; |
| 182 | perror("pty write error"); |
| 183 | return; |
| 184 | } |
| 185 | printf("Couldn't write all the data to the pty, wanted %d, got %d\n", |
| 186 | len, cc); |
| 187 | } |
| 188 | } |
| 189 | \f |
| 190 | static char * |
| 191 | full_filename(symtab) |
| 192 | struct symtab *symtab; |
| 193 | { |
| 194 | int pathlen; |
| 195 | char *filename; |
| 196 | |
| 197 | if (!symtab) |
| 198 | return NULL; |
| 199 | |
| 200 | if (symtab->fullname) |
| 201 | return savestring(symtab->fullname, strlen(symtab->fullname)); |
| 202 | |
| 203 | if (symtab->dirname) |
| 204 | pathlen = strlen(symtab->dirname); |
| 205 | else |
| 206 | pathlen = 0; |
| 207 | if (symtab->filename) |
| 208 | pathlen += strlen(symtab->filename); |
| 209 | |
| 210 | filename = xmalloc(pathlen+1); |
| 211 | |
| 212 | if (symtab->dirname) |
| 213 | strcpy(filename, symtab->dirname); |
| 214 | else |
| 215 | *filename = '\000'; |
| 216 | if (symtab->filename) |
| 217 | strcat(filename, symtab->filename); |
| 218 | |
| 219 | return filename; |
| 220 | } |
| 221 | |
| 222 | /* Tell the energize kernel how high the stack is so that frame numbers (which |
| 223 | are relative to the current stack height) make sense. |
| 224 | |
| 225 | Calculate the number of frames on the stack, and the number of subroutine |
| 226 | invocations that haven't changed since the last call to this routine. The |
| 227 | second number is calculated by comparing the PCs of the current stack frames |
| 228 | to the PCs of the previous set of stack frames. The screw here is that a |
| 229 | subroutine may call several different procedures, which means that the PC |
| 230 | in its frame changes, even though you are still in the same subroutine. We |
| 231 | resolve this by converting the frames PC into the PC at the start of the |
| 232 | function (for efficiency, this is done only if the simple comparison test |
| 233 | fails). */ |
| 234 | |
| 235 | struct pclist |
| 236 | { |
| 237 | CORE_ADDR pc; |
| 238 | struct pclist *next; |
| 239 | }; |
| 240 | |
| 241 | /* Non-zero means that Energize kernel already knows how high the stack is. */ |
| 242 | static int stack_info_valid = 0; |
| 243 | |
| 244 | static void |
| 245 | send_stack_info() |
| 246 | { |
| 247 | struct pclist *pclist = 0, *pli, *opli; |
| 248 | static struct pclist *old_pclist; |
| 249 | FRAME frame; |
| 250 | int height, similar; |
| 251 | |
| 252 | if (stack_info_valid) |
| 253 | return; |
| 254 | |
| 255 | height = 0; |
| 256 | similar = 0; |
| 257 | |
| 258 | /* First, calculate the stack height, and build the new pclist */ |
| 259 | |
| 260 | for (frame = get_current_frame(); |
| 261 | frame != 0; |
| 262 | frame = get_prev_frame(frame)) |
| 263 | { |
| 264 | (height)++; |
| 265 | pli = (struct pclist *)xmalloc(sizeof(struct pclist)); |
| 266 | |
| 267 | pli->pc = frame->pc; |
| 268 | pli->next = pclist; |
| 269 | pclist = pli; |
| 270 | } |
| 271 | |
| 272 | /* Now, figure out how much of the stack hasn't changed */ |
| 273 | |
| 274 | for (pli = pclist, opli = old_pclist; |
| 275 | pli != 0 && opli != 0; |
| 276 | pli = pli->next, opli = opli->next, (similar)++) |
| 277 | { |
| 278 | if ((pli->pc != opli->pc) |
| 279 | && (get_pc_function_start(pli->pc) |
| 280 | != get_pc_function_start(opli->pc))) |
| 281 | break; |
| 282 | } |
| 283 | |
| 284 | /* Free up all elements of the old pclist */ |
| 285 | |
| 286 | opli = old_pclist; |
| 287 | |
| 288 | while (opli) |
| 289 | { |
| 290 | pli = opli->next; |
| 291 | free (opli); |
| 292 | opli = pli; |
| 293 | } |
| 294 | |
| 295 | old_pclist = pclist; /* Install the new pclist */ |
| 296 | |
| 297 | CVWriteStackSizeInfo(conn, |
| 298 | instance_id, |
| 299 | height, /* Frame depth */ |
| 300 | CInnerFrameIs0, |
| 301 | similar, /* Frame diff */ |
| 302 | "" /* Transcript */ |
| 303 | ); |
| 304 | |
| 305 | stack_info_valid = 1; |
| 306 | } |
| 307 | |
| 308 | /* Tell the Energize server about the file and line # that corresponds to pc, |
| 309 | and which stack frame level that pc corresponds to. */ |
| 310 | |
| 311 | static void |
| 312 | send_location(pc, frame_level) |
| 313 | CORE_ADDR pc; |
| 314 | int frame_level; |
| 315 | { |
| 316 | char *funcname, *filename; |
| 317 | struct symtab_and_line sal; |
| 318 | struct symbol *symbol; |
| 319 | |
| 320 | sal = find_pc_line(pc, 0); |
| 321 | symbol = find_pc_function(pc); |
| 322 | |
| 323 | funcname = symbol ? symbol->name : ""; |
| 324 | filename = full_filename(sal.symtab); |
| 325 | |
| 326 | send_stack_info(); |
| 327 | |
| 328 | CVWriteStackFrameInfo(conn, |
| 329 | instance_id, |
| 330 | sal.line, |
| 331 | CFileLinePos, |
| 332 | frame_level, |
| 333 | funcname, |
| 334 | filename, |
| 335 | "" /* XXX ? transcript */ |
| 336 | ); |
| 337 | if (filename) |
| 338 | free(filename); |
| 339 | } |
| 340 | |
| 341 | /* Tell the kernel where we are in the program, and what the stack looks like. |
| 342 | */ |
| 343 | |
| 344 | static void |
| 345 | send_status() |
| 346 | { |
| 347 | char *funcname; |
| 348 | struct symbol *symbol; |
| 349 | static int sent_prog_inst = 0; |
| 350 | |
| 351 | symbol = find_pc_function(stop_pc); |
| 352 | funcname = symbol ? symbol->name : ""; |
| 353 | |
| 354 | if (!has_run) |
| 355 | return; |
| 356 | |
| 357 | if (inferior_pid == 0) /* target has died */ |
| 358 | { |
| 359 | CVWriteProgramTerminatedInfo(conn, |
| 360 | instance_id, |
| 361 | "" |
| 362 | ); |
| 363 | return; |
| 364 | } |
| 365 | |
| 366 | if (!sent_prog_inst) |
| 367 | { |
| 368 | sent_prog_inst = 1; |
| 369 | CVWriteProgramInstanceInfo(conn, |
| 370 | program_id, |
| 371 | instance_id, |
| 372 | "", /* hostname */ |
| 373 | "", /* arglist */ |
| 374 | "" |
| 375 | ); |
| 376 | } |
| 377 | |
| 378 | send_location(stop_pc, |
| 379 | selected_frame_level); /* Had better be 0! */ |
| 380 | |
| 381 | CVWriteProgramStoppedInfo(conn, |
| 382 | instance_id, |
| 383 | 0, /* XXX - breakpoint # or signal # */ |
| 384 | CDebuggerCommand, |
| 385 | funcname, |
| 386 | "" /* XXX ? transcript */ |
| 387 | ); |
| 388 | |
| 389 | } |
| 390 | |
| 391 | /* Call this to output annotated function names. Names will be demangled if |
| 392 | necessary. arg_mode contains flags that are passed on to cplus_demangle. */ |
| 393 | |
| 394 | void |
| 395 | energize_annotate_function(funcname, arg_mode, level) |
| 396 | char *funcname; |
| 397 | int arg_mode; |
| 398 | int level; |
| 399 | { |
| 400 | extern int demangle; |
| 401 | char *demangled_name = NULL; |
| 402 | |
| 403 | if (funcname == NULL) |
| 404 | return; |
| 405 | |
| 406 | if (demangle) |
| 407 | { |
| 408 | demangled_name = cplus_demangle(funcname, arg_mode); |
| 409 | |
| 410 | if (demangled_name) |
| 411 | { |
| 412 | funcname = demangled_name; |
| 413 | printf_filtered("'"); |
| 414 | } |
| 415 | } |
| 416 | |
| 417 | send_stack_info(); |
| 418 | |
| 419 | if (level < 0) level = 0; |
| 420 | |
| 421 | CVWriteBackTraceEntryInfo(conn, |
| 422 | instance_id, |
| 423 | level, /* frameNo */ |
| 424 | funcname); |
| 425 | |
| 426 | if (demangled_name) |
| 427 | { |
| 428 | free(demangled_name); |
| 429 | printf_filtered("'"); |
| 430 | } |
| 431 | } |
| 432 | |
| 433 | /* Call this just prior to printing out the name & value of a variable. This |
| 434 | tells the kernel where to annotate the output. */ |
| 435 | |
| 436 | /* The args are: |
| 437 | expression - A text handle on what GDB can use to reference this value. |
| 438 | This can be a symbol name, or a convenience var, etc... |
| 439 | symbol - Used to determine the scope of the data. May be NULL. |
| 440 | type - Determines if we have a pointer ref, and the print name of the type. |
| 441 | Used in ShowValue message. |
| 442 | valaddr - The address in target memory of the data. |
| 443 | field - The field name of the struct or union element being referenced. |
| 444 | */ |
| 445 | |
| 446 | static char cum_expr[200]; /* Cumulative expression */ |
| 447 | static char *expr_stack[100] = {cum_expr}; /* Pointers to end of expressions */ |
| 448 | static char **last_expr = expr_stack; /* Current expr stack pointer */ |
| 449 | |
| 450 | void |
| 451 | energize_start_variable_annotation(expression, symbol, type, valaddr, field) |
| 452 | char *expression; |
| 453 | struct symbol *symbol; |
| 454 | struct type *type; |
| 455 | CORE_ADDR valaddr; |
| 456 | char *field; |
| 457 | { |
| 458 | int ref_type; |
| 459 | int stor_cl; |
| 460 | enum type_code type_code; |
| 461 | enum address_class sym_class; |
| 462 | char *type_cast; |
| 463 | |
| 464 | if (!energize) |
| 465 | return; |
| 466 | |
| 467 | send_stack_info(); |
| 468 | |
| 469 | strcpy(*last_expr++, expression); |
| 470 | *last_expr = *(last_expr-1) + strlen(expression); |
| 471 | |
| 472 | switch (TYPE_CODE(type)) |
| 473 | { |
| 474 | case TYPE_CODE_ARRAY: |
| 475 | case TYPE_CODE_STRUCT: |
| 476 | case TYPE_CODE_UNION: |
| 477 | case TYPE_CODE_ENUM: |
| 478 | case TYPE_CODE_INT: |
| 479 | case TYPE_CODE_FLT: |
| 480 | ref_type = CValueValueRef; |
| 481 | break; |
| 482 | case TYPE_CODE_PTR: |
| 483 | ref_type = CValuePointerRef; |
| 484 | break; |
| 485 | default: |
| 486 | ref_type = CValueUndefRef; |
| 487 | break; |
| 488 | } |
| 489 | |
| 490 | /* Make sure that pointer points at something we understand */ |
| 491 | |
| 492 | if (ref_type == CValuePointerRef) |
| 493 | switch (TYPE_CODE(TYPE_TARGET_TYPE(type))) |
| 494 | { |
| 495 | case TYPE_CODE_PTR: |
| 496 | case TYPE_CODE_ARRAY: |
| 497 | case TYPE_CODE_STRUCT: |
| 498 | case TYPE_CODE_UNION: |
| 499 | case TYPE_CODE_ENUM: |
| 500 | case TYPE_CODE_INT: |
| 501 | case TYPE_CODE_FLT: |
| 502 | break; |
| 503 | default: |
| 504 | ref_type = CValueUndefRef; |
| 505 | break; |
| 506 | } |
| 507 | |
| 508 | if (symbol) |
| 509 | { |
| 510 | sym_class = SYMBOL_CLASS(symbol); |
| 511 | |
| 512 | switch (sym_class) |
| 513 | { |
| 514 | case LOC_CONST: |
| 515 | case LOC_CONST_BYTES: |
| 516 | stor_cl = CValueStorStaticConst; |
| 517 | break; |
| 518 | case LOC_STATIC: |
| 519 | stor_cl = CValueStorStaticVar; |
| 520 | break; |
| 521 | case LOC_REGISTER: |
| 522 | case LOC_REGPARM: |
| 523 | stor_cl = CValueStorRegister; |
| 524 | break; |
| 525 | case LOC_ARG: |
| 526 | case LOC_REF_ARG: |
| 527 | case LOC_LOCAL: |
| 528 | case LOC_LOCAL_ARG: |
| 529 | stor_cl = CValueStorLocalVar; |
| 530 | break; |
| 531 | default: |
| 532 | stor_cl = CValueStorUndef; |
| 533 | break; |
| 534 | } |
| 535 | } |
| 536 | else |
| 537 | stor_cl = CValueStorUndef; |
| 538 | |
| 539 | type_cast = TYPE_NAME(type); |
| 540 | |
| 541 | CVWriteValueBeginInfo(conn, |
| 542 | instance_id, |
| 543 | valaddr, |
| 544 | ref_type, |
| 545 | stor_cl, |
| 546 | 0, /* XXX - frameno */ |
| 547 | cum_expr, |
| 548 | field, |
| 549 | type_cast, |
| 550 | ""); /* transcript */ |
| 551 | } |
| 552 | |
| 553 | void |
| 554 | energize_end_variable_annotation() |
| 555 | { |
| 556 | if (!energize) |
| 557 | return; |
| 558 | |
| 559 | last_expr--; /* Pop the expr stack */ |
| 560 | **last_expr = '\000'; /* Cut off the last part of the expr */ |
| 561 | |
| 562 | CVWriteValueEndInfo(conn, |
| 563 | instance_id, |
| 564 | ""); /* transcript */ |
| 565 | } |
| 566 | \f |
| 567 | /* Tell the kernel that the target is now running. */ |
| 568 | |
| 569 | static void |
| 570 | go_busy() |
| 571 | { |
| 572 | CVWriteProgramBusyInfo(conn, |
| 573 | instance_id, |
| 574 | ""); /* XXX ? transcript */ |
| 575 | CWriteRequestBuffer(conn); /* Must take place synchronusly! */ |
| 576 | stack_info_valid = 0; |
| 577 | } |
| 578 | |
| 579 | \f |
| 580 | void |
| 581 | energize_symbol_file(objfile) |
| 582 | struct objfile *objfile; |
| 583 | { |
| 584 | if (!energize) |
| 585 | return; |
| 586 | |
| 587 | CVWriteSymbolTableInfo(conn, |
| 588 | objfile->name, |
| 589 | ""); /* Transcript */ |
| 590 | } |
| 591 | |
| 592 | /* execute_command_1(echo, queue, cmd, args) - echo - non-zero means echo the |
| 593 | command. queue - non-zero means don't execute it now, just save it away for |
| 594 | later. cmd - string containing printf control sequences. args - list of |
| 595 | arguments needed by those control sequences. |
| 596 | */ |
| 597 | |
| 598 | /* Linked list of queued up commands */ |
| 599 | static struct command_line *queued_commands = 0; |
| 600 | static struct command_line *last_queued_command = 0; |
| 601 | |
| 602 | /* Call this routine to save a command for later. The command string is |
| 603 | copied into freshly malloc'ed memory. */ |
| 604 | |
| 605 | static void |
| 606 | queue_command(cmd) |
| 607 | char *cmd; |
| 608 | { |
| 609 | char *buf; |
| 610 | struct command_line *cl; |
| 611 | unsigned long s; |
| 612 | |
| 613 | s = (strlen(cmd) + 1) + 7 & ~(unsigned long)7; |
| 614 | |
| 615 | buf = (char *)xmalloc(s + sizeof(struct command_line)); |
| 616 | cl = (struct command_line *)(buf + s); |
| 617 | cl->next = 0; |
| 618 | cl->line = buf; |
| 619 | |
| 620 | strncpy(cl->line, cmd, s); |
| 621 | |
| 622 | if (queued_commands) |
| 623 | last_queued_command->next = cl; |
| 624 | else |
| 625 | queued_commands = cl; |
| 626 | |
| 627 | last_queued_command = cl; |
| 628 | } |
| 629 | |
| 630 | /* Call this procedure to take a command off of the command queue. It returns |
| 631 | a pointer to a buf which the caller is responsible for freeing. NULL is |
| 632 | returned if there are no commands queued. */ |
| 633 | |
| 634 | static char * |
| 635 | dequeue_command() |
| 636 | { |
| 637 | struct command_line *cl; |
| 638 | char *cmd; |
| 639 | |
| 640 | cl = queued_commands; |
| 641 | |
| 642 | if (!cl) |
| 643 | return NULL; |
| 644 | |
| 645 | queued_commands = cl->next; |
| 646 | |
| 647 | return cl->line; |
| 648 | } |
| 649 | |
| 650 | static void |
| 651 | execute_command_1(va_alist) |
| 652 | va_dcl |
| 653 | { |
| 654 | char buf[100]; /* XXX - make buf dynamic! */ |
| 655 | |
| 656 | int echo; |
| 657 | int queue; |
| 658 | char *cmd; |
| 659 | va_list args; |
| 660 | |
| 661 | va_start(args); |
| 662 | |
| 663 | echo = va_arg(args, int); |
| 664 | queue = va_arg(args, int); |
| 665 | cmd = va_arg(args, char *); |
| 666 | |
| 667 | vsprintf(buf, cmd, args); |
| 668 | |
| 669 | if (queue) |
| 670 | queue_command(buf); |
| 671 | else |
| 672 | { |
| 673 | if (echo) |
| 674 | printf_filtered("%s\n", buf); |
| 675 | execute_command(buf, 1); |
| 676 | } |
| 677 | |
| 678 | va_end(args); |
| 679 | } |
| 680 | |
| 681 | #ifdef KERNEL_RECORD |
| 682 | FILE *kerout; |
| 683 | |
| 684 | static int |
| 685 | kernel_record(fd, ptr, num) |
| 686 | int fd, num; |
| 687 | char *ptr; |
| 688 | |
| 689 | { |
| 690 | fwrite(ptr, num, 1, kerout); |
| 691 | fflush(kerout); |
| 692 | return write(fd, ptr, num); |
| 693 | } |
| 694 | #endif |
| 695 | |
| 696 | void |
| 697 | energize_condition_breakpoint(b) |
| 698 | struct breakpoint *b; |
| 699 | { |
| 700 | if (energize) |
| 701 | CVWriteBreakConditionInfo(conn, |
| 702 | instance_id, |
| 703 | b->number, |
| 704 | b->cond_string ? b->cond_string : "", |
| 705 | "" /* transcript */ |
| 706 | ); |
| 707 | } |
| 708 | |
| 709 | void |
| 710 | energize_commands_breakpoint(b) |
| 711 | struct breakpoint *b; |
| 712 | { |
| 713 | struct command_line *l; |
| 714 | |
| 715 | if (!energize) |
| 716 | return; |
| 717 | |
| 718 | CVWriteBreakCommandBegInfo(conn, |
| 719 | instance_id, |
| 720 | b->number, |
| 721 | ""); /* transcript */ |
| 722 | |
| 723 | for (l = b->commands; l; l = l->next) |
| 724 | CVWriteBreakCommandEntryInfo(conn, |
| 725 | instance_id, |
| 726 | l->line, |
| 727 | ""); /* transcript */ |
| 728 | |
| 729 | CVWriteBreakCommandEndInfo(conn, |
| 730 | instance_id, |
| 731 | ""); /* transcript */ |
| 732 | } |
| 733 | |
| 734 | static void |
| 735 | breakpoint_notify(b, action) |
| 736 | struct breakpoint *b; |
| 737 | int action; |
| 738 | { |
| 739 | struct symbol *sym; |
| 740 | char *funcname = ""; |
| 741 | char *filename; |
| 742 | char *included_in_filename = ""; |
| 743 | |
| 744 | if (!energize) |
| 745 | return; |
| 746 | |
| 747 | if (b->type != bp_breakpoint) |
| 748 | return; |
| 749 | |
| 750 | filename = full_filename(b->symtab); |
| 751 | |
| 752 | sym = find_pc_function(b->address); |
| 753 | if (sym) |
| 754 | funcname = SYMBOL_NAME(sym); |
| 755 | |
| 756 | CVWriteBreakpointInfo (conn, |
| 757 | instance_id, |
| 758 | b->number, |
| 759 | b->line_number, |
| 760 | CFileLinePos, |
| 761 | CBreakOnInstrAccess, |
| 762 | action, |
| 763 | b->ignore_count, |
| 764 | funcname, |
| 765 | filename ? filename : "", |
| 766 | "", /* included_in_filename */ |
| 767 | "" /* transcript */ |
| 768 | ); |
| 769 | |
| 770 | if (b->commands) |
| 771 | energize_commands_breakpoint(b); |
| 772 | |
| 773 | energize_condition_breakpoint(b); |
| 774 | |
| 775 | if (filename) |
| 776 | free(filename); |
| 777 | } |
| 778 | |
| 779 | void |
| 780 | energize_create_breakpoint(b) |
| 781 | struct breakpoint *b; |
| 782 | { |
| 783 | breakpoint_notify(b, CEnableBreakpoint); |
| 784 | } |
| 785 | |
| 786 | void |
| 787 | energize_delete_breakpoint(b) |
| 788 | struct breakpoint *b; |
| 789 | { |
| 790 | breakpoint_notify(b, CDeleteBreakpoint); |
| 791 | } |
| 792 | |
| 793 | void |
| 794 | energize_enable_breakpoint(b) |
| 795 | struct breakpoint *b; |
| 796 | { |
| 797 | breakpoint_notify(b, CEnableBreakpoint); |
| 798 | } |
| 799 | |
| 800 | void |
| 801 | energize_disable_breakpoint(b) |
| 802 | struct breakpoint *b; |
| 803 | { |
| 804 | breakpoint_notify(b, CDisableBreakpoint); |
| 805 | } |
| 806 | |
| 807 | void |
| 808 | energize_ignore_breakpoint(b) |
| 809 | struct breakpoint *b; |
| 810 | { |
| 811 | breakpoint_notify(b, CBreakAttrUnchanged); |
| 812 | } |
| 813 | \f |
| 814 | /* Open up a pty and its associated tty. Return the fd of the tty. */ |
| 815 | |
| 816 | #ifndef NCR486 |
| 817 | static void |
| 818 | getpty() |
| 819 | { |
| 820 | int n, ptyfd, ttyfd; |
| 821 | static char dev[30]; |
| 822 | struct stat statbuf; |
| 823 | struct termios termios; |
| 824 | |
| 825 | #define HIGHPTY (('z' - 'p') * 16 - 1) |
| 826 | |
| 827 | for (n = 0; n <= HIGHPTY; n++) |
| 828 | { |
| 829 | sprintf(dev, "/dev/pty%c%x", n/16 + 'p', n%16); |
| 830 | if (stat(dev, &statbuf)) |
| 831 | break; |
| 832 | ptyfd = open(dev, O_RDWR); |
| 833 | if (ptyfd < 0) |
| 834 | continue; |
| 835 | sprintf(dev, "/dev/tty%c%x", n/16 + 'p', n%16); |
| 836 | ttyfd = open(dev, O_RDWR); |
| 837 | if (ttyfd < 0) |
| 838 | { |
| 839 | close(ptyfd); |
| 840 | continue; |
| 841 | } |
| 842 | |
| 843 | /* Setup pty for non-blocking I/O. Also make it give us a SIGIO when |
| 844 | there's data available. */ |
| 845 | |
| 846 | n = fcntl(ptyfd, F_GETFL, 0); |
| 847 | fcntl(ptyfd, F_SETFL, n|FNDELAY|FASYNC); |
| 848 | fcntl(ptyfd, F_SETOWN, getpid()); |
| 849 | |
| 850 | tcgetattr(ttyfd, &termios); |
| 851 | termios.c_oflag &= ~OPOST; /* No post-processing */ |
| 852 | tcsetattr(ttyfd, TCSANOW, &termios); |
| 853 | |
| 854 | inferior_pty = ptyfd; |
| 855 | inferior_tty = ttyfd; |
| 856 | return; |
| 857 | } |
| 858 | |
| 859 | error ("getpty: can't get a pty\n"); |
| 860 | } |
| 861 | #endif |
| 862 | /* Alternate getpty for NCRs */ |
| 863 | |
| 864 | #ifdef NCR486 /* LTL */ |
| 865 | #define MAX_PTM_TRY 16 |
| 866 | #define MAX_GRANTPT_TRY 4 |
| 867 | static void |
| 868 | getpty() |
| 869 | { |
| 870 | char *slavename; |
| 871 | extern char *ptsname(); |
| 872 | int j, i; |
| 873 | int n, mfd, sfd; |
| 874 | struct termios termios; |
| 875 | |
| 876 | /* Number of pseudo-terms is tuneable(16 - 255). System default is 16. */ |
| 877 | for (i = 0; i < MAX_PTM_TRY; i++) |
| 878 | { |
| 879 | mfd = open("/dev/ptmx", O_RDWR); /* get the master */ |
| 880 | |
| 881 | if (mfd < 0) |
| 882 | continue; |
| 883 | |
| 884 | if (grantpt(mfd) < 0) /* get a slave */ |
| 885 | for (j = 0; j < MAX_GRANTPT_TRY; j++) |
| 886 | if (grantpt(mfd) == 0 ) |
| 887 | { |
| 888 | close(mfd); |
| 889 | continue; |
| 890 | } |
| 891 | |
| 892 | if (unlockpt(mfd) < 0) |
| 893 | { /* unlock the slave so he can be opened */ |
| 894 | close(mfd); |
| 895 | continue; |
| 896 | } |
| 897 | |
| 898 | slavename = ptsname(mfd); /* get the slave device name */ |
| 899 | if (!slavename) |
| 900 | { |
| 901 | close(mfd); |
| 902 | continue; |
| 903 | } |
| 904 | |
| 905 | sfd = open(slavename, O_RDWR); |
| 906 | |
| 907 | if (sfd < 0) |
| 908 | { |
| 909 | close(mfd); |
| 910 | continue; |
| 911 | } |
| 912 | |
| 913 | /* setup mty for non-blocking I/O. Also make it give us a SIGIO |
| 914 | when there's data availabe. */ |
| 915 | n = fcntl(mfd, F_GETFL, 0); |
| 916 | fcntl(mfd, F_SETFL, n | O_NDELAY | O_SYNC); |
| 917 | fcntl(mfd, F_SETOWN,getpid()); |
| 918 | |
| 919 | tcgetattr(sfd, &termios); |
| 920 | termios.c_oflag &= ~OPOST; /* no post-processing */ |
| 921 | tcsetattr(sfd, TCSANOW, &termios); |
| 922 | |
| 923 | inferior_pty=mfd; |
| 924 | inferior_tty=sfd; |
| 925 | return; |
| 926 | } |
| 927 | error ("getpty: can't get a pts\n"); |
| 928 | } |
| 929 | #endif |
| 930 | \f |
| 931 | /* Examine a protocol packet from the driver. */ |
| 932 | |
| 933 | static void |
| 934 | kernel_dispatch(queue) |
| 935 | int queue; /* Non-zero means we should just queue up |
| 936 | commands. */ |
| 937 | { |
| 938 | register CHeader *head; |
| 939 | |
| 940 | head = (CHeader *)CPeekNextRequest (conn); |
| 941 | if (head == NULL) |
| 942 | { |
| 943 | fprintf (stderr, "EOF on kernel read!\n"); |
| 944 | exit (1); |
| 945 | } |
| 946 | |
| 947 | if (head->reqType < LastTtyRequestRType) |
| 948 | { |
| 949 | CTtyRequest* req = CReadTtyRequest (conn); |
| 950 | switch (req->head.reqType) |
| 951 | { |
| 952 | case AcceptConnectionRType: |
| 953 | /* Tell the rest of the world that energize is now set up */ |
| 954 | CSkipRequest (conn); |
| 955 | break; |
| 956 | |
| 957 | case RefuseConnectionRType: |
| 958 | fprintf (stderr, "Debugger connection refused\n"); |
| 959 | exit (1); |
| 960 | |
| 961 | case KillProgramRType: |
| 962 | exit (0); |
| 963 | |
| 964 | case TextIORType: |
| 965 | { |
| 966 | char *p; |
| 967 | ReqLen len; |
| 968 | |
| 969 | p = CGetVstring(conn, &len); |
| 970 | kernel_to_pty(p, len); |
| 971 | } |
| 972 | break; |
| 973 | default: |
| 974 | fprintf(stderr, "Unknown Tty request type = %d\n", |
| 975 | req->head.reqType); |
| 976 | break; |
| 977 | } |
| 978 | } |
| 979 | else |
| 980 | { |
| 981 | CVDebuggerRequest *req = CVReadDebuggerRequest (conn); |
| 982 | if (!req) |
| 983 | { |
| 984 | fprintf (stderr, "CVReadDebuggerRequest returned NULL, type = %d\n", |
| 985 | head->reqType); |
| 986 | exit(1); |
| 987 | } |
| 988 | |
| 989 | switch (req->head.request->reqType) |
| 990 | { |
| 991 | case OpenProgramInstanceRType: |
| 992 | { |
| 993 | char *arglist, buf[100]; /* XXX - Make buf dynamic! */ |
| 994 | int arglen; |
| 995 | /* XXX - should notice when program_id changes */ |
| 996 | arglist = req->openProgramInstance.progArglist.text; |
| 997 | arglen = req->openProgramInstance.progArglist.byteLen; |
| 998 | |
| 999 | execute_command_1(1, queue, "break main"); |
| 1000 | execute_command_1(1, queue, "enable delete $bpnum"); |
| 1001 | if (arglist) |
| 1002 | { |
| 1003 | execute_command_1(1, queue, "set args %.*s", arglen, arglist); |
| 1004 | } |
| 1005 | execute_command_1(1, queue, "run"); |
| 1006 | } |
| 1007 | break; |
| 1008 | case SearchPathRType: |
| 1009 | directory_command(req->searchPath.searchPath.text, 0); |
| 1010 | break; |
| 1011 | case QuitDebuggerRType: |
| 1012 | execute_command_1(1, queue, "quit"); |
| 1013 | break; |
| 1014 | case RunRType: |
| 1015 | if (req->run.request->useArglist == CNewArglist) |
| 1016 | { |
| 1017 | execute_command_1(1, queue, "set args %.*s", |
| 1018 | req->run.progArglist.byteLen, |
| 1019 | req->run.progArglist.text); |
| 1020 | } |
| 1021 | execute_command_1(1, queue, "run"); |
| 1022 | break; |
| 1023 | case ContinueRType: |
| 1024 | execute_command_1(1, queue, "continue"); |
| 1025 | break; |
| 1026 | case StepRType: |
| 1027 | execute_command_1(1, queue, "step %d", req->step.request->stepCount); |
| 1028 | break; |
| 1029 | case NextRType: |
| 1030 | execute_command_1(1, queue, "next %d", req->next.request->nextCount); |
| 1031 | break; |
| 1032 | case ChangeStackFrameRType: |
| 1033 | switch (req->changeStackFrame.request->frameMovement) |
| 1034 | { |
| 1035 | case CToCurrentStackFrame: |
| 1036 | execute_command_1(1, queue, "frame %d", |
| 1037 | req->changeStackFrame.request->frameNo); |
| 1038 | break; |
| 1039 | case CToInnerStackFrame: |
| 1040 | execute_command_1(1, queue, "down %d", |
| 1041 | req->changeStackFrame.request->frameNo); |
| 1042 | break; |
| 1043 | case CToOuterStackFrame: |
| 1044 | execute_command_1(1, queue, "up %d", |
| 1045 | req->changeStackFrame.request->frameNo); |
| 1046 | break; |
| 1047 | case CToAbsoluteStackFrame: |
| 1048 | execute_command_1(1, queue, "frame %d", |
| 1049 | req->changeStackFrame.request->frameNo); |
| 1050 | break; |
| 1051 | } |
| 1052 | break; |
| 1053 | case BackTraceRType: |
| 1054 | /* XXX - deal with limit??? */ |
| 1055 | execute_command_1(1, queue, "backtrace"); |
| 1056 | break; |
| 1057 | case FinishRType: |
| 1058 | execute_command_1(1, queue, "finish"); |
| 1059 | break; |
| 1060 | case TerminateProgramRType: |
| 1061 | execute_command_1(1, queue, "kill"); |
| 1062 | break; |
| 1063 | case NewBreakpointRType: |
| 1064 | { |
| 1065 | char *tail; |
| 1066 | int skipped; |
| 1067 | |
| 1068 | tail = strrchr(req->newBreakpoint.fileName.text, '/'); |
| 1069 | if (!tail) |
| 1070 | tail = req->newBreakpoint.fileName.text; |
| 1071 | else |
| 1072 | tail++; |
| 1073 | skipped = tail - req->newBreakpoint.fileName.text; |
| 1074 | execute_command_1(1, queue, "break %.*s:%d", |
| 1075 | req->newBreakpoint.fileName.byteLen - skipped, |
| 1076 | tail, |
| 1077 | req->newBreakpoint.request->fileLinePos); |
| 1078 | } |
| 1079 | break; |
| 1080 | case StopRType: |
| 1081 | killpg(pgrp_inferior, SIGINT); |
| 1082 | break; |
| 1083 | case UserInputRType: |
| 1084 | { |
| 1085 | char *text; |
| 1086 | long len; |
| 1087 | |
| 1088 | /* XXX - should really break command up into seperate lines |
| 1089 | and spoon-feed it to execute_command */ |
| 1090 | |
| 1091 | text = req->userInput.userInput.text; |
| 1092 | len = req->userInput.userInput.byteLen; |
| 1093 | |
| 1094 | if (text[len-1] == '\n') text[len-1] = '\000'; |
| 1095 | |
| 1096 | while (*text == ' ' || *text == '\t') text++; |
| 1097 | |
| 1098 | if (strcmp(text, "]*[") == 0) /* XXX - What does this mean??? */ |
| 1099 | break; |
| 1100 | |
| 1101 | if (*text != '\000') |
| 1102 | execute_command_1(0, queue, "%s", text); |
| 1103 | else |
| 1104 | print_prompt(); /* User just typed a blank line */ |
| 1105 | } |
| 1106 | break; |
| 1107 | case QueryResponseRType: |
| 1108 | { |
| 1109 | char *resp; |
| 1110 | |
| 1111 | if (req->queryResponse.request->response) |
| 1112 | resp = "y"; |
| 1113 | else |
| 1114 | resp = "n"; |
| 1115 | execute_command_1(1, 1, resp); |
| 1116 | printf_filtered("%s\n", resp); |
| 1117 | } |
| 1118 | break; |
| 1119 | case ChangeBreakpointRType: |
| 1120 | switch (req->changeBreakpoint.request->breakpointAttr) |
| 1121 | { |
| 1122 | case CBreakAttrUnchanged: |
| 1123 | execute_command_1(1, queue, "ignore %d %d", |
| 1124 | req->changeBreakpoint.request->breakpointId, |
| 1125 | req->changeBreakpoint.request->ignoreCount); |
| 1126 | break; |
| 1127 | case CEnableBreakpoint: |
| 1128 | execute_command_1(1, queue, "enable %d", |
| 1129 | req->changeBreakpoint.request->breakpointId); |
| 1130 | break; |
| 1131 | case CDisableBreakpoint: |
| 1132 | execute_command_1(1, queue, "disable %d", |
| 1133 | req->changeBreakpoint.request->breakpointId); |
| 1134 | break; |
| 1135 | case CDeleteBreakpoint: |
| 1136 | execute_command_1(1, queue, "delete %d", |
| 1137 | req->changeBreakpoint.request->breakpointId); |
| 1138 | break; |
| 1139 | case CEnableDisableBreakpoint: |
| 1140 | execute_command_1(1, queue, "enable once %d", |
| 1141 | req->changeBreakpoint.request->breakpointId); |
| 1142 | break; |
| 1143 | case CEnableDeleteBreakpoint: |
| 1144 | execute_command_1(1, queue, "enable delete %d", |
| 1145 | req->changeBreakpoint.request->breakpointId); |
| 1146 | break; |
| 1147 | default: |
| 1148 | printf_filtered("ChangeBreakpointRType: unknown breakpointAttr\n"); |
| 1149 | printf_filtered(" breakpointAttr = %d\n", |
| 1150 | req->changeBreakpoint.request->breakpointAttr); |
| 1151 | printf_filtered(" breakpointId = %d\n", |
| 1152 | req->changeBreakpoint.request->breakpointId); |
| 1153 | printf_filtered(" breakpointType = %d\n", |
| 1154 | req->changeBreakpoint.request->breakpointType); |
| 1155 | printf_filtered(" ignoreCount = %d\n", |
| 1156 | req->changeBreakpoint.request->ignoreCount); |
| 1157 | break; |
| 1158 | } |
| 1159 | break; |
| 1160 | case BreakConditionRType: |
| 1161 | execute_command_1(1, queue, "condition %d %.*s", |
| 1162 | req->breakCondition.request->breakpointId, |
| 1163 | req->breakCondition.condition.byteLen, |
| 1164 | req->breakCondition.condition.text); |
| 1165 | break; |
| 1166 | case BreakCommandsRType: |
| 1167 | /* Put pointers to where energize_command_line_input() can find |
| 1168 | them. */ |
| 1169 | doing_breakcommands_message = 1; |
| 1170 | command_line_length = req->breakCommands.commands.byteLen; |
| 1171 | command_line_text = req->breakCommands.commands.text; |
| 1172 | execute_command_1(1, queue, "commands %d", |
| 1173 | req->breakCommands.request->breakpointId); |
| 1174 | command_line_text = (char *)NULL; |
| 1175 | command_line_length = 0; |
| 1176 | doing_breakcommands_message = 0; |
| 1177 | break; |
| 1178 | case ShowValueRType: |
| 1179 | { |
| 1180 | char expr[100], *p = expr; |
| 1181 | |
| 1182 | expr[0] = 0; |
| 1183 | |
| 1184 | if (req->showValue.request->ref_type == CValuePointerRef) |
| 1185 | strcat(expr, "* "); |
| 1186 | |
| 1187 | if (req->showValue.type_cast.byteLen) |
| 1188 | { |
| 1189 | strcat(expr, "("); |
| 1190 | strncat(expr, req->showValue.type_cast.text, |
| 1191 | req->showValue.type_cast.byteLen); |
| 1192 | strcat(expr, ") "); |
| 1193 | } |
| 1194 | |
| 1195 | if (req->showValue.field.byteLen) |
| 1196 | strcat(expr, "("); |
| 1197 | |
| 1198 | strncat(expr, req->showValue.expression.text, |
| 1199 | req->showValue.expression.byteLen); |
| 1200 | |
| 1201 | if (req->showValue.field.byteLen) |
| 1202 | { |
| 1203 | strcat(expr, ")"); |
| 1204 | |
| 1205 | strncat(expr, req->showValue.field.text, |
| 1206 | req->showValue.field.byteLen); |
| 1207 | } |
| 1208 | |
| 1209 | execute_command_1(1, queue, "print %s", expr); |
| 1210 | } |
| 1211 | break; |
| 1212 | case SetValueRType: |
| 1213 | { |
| 1214 | char expr[100], *p = expr; |
| 1215 | |
| 1216 | expr[0] = 0; |
| 1217 | |
| 1218 | if (req->setValue.request->ref_type == CValuePointerRef) |
| 1219 | strcat(expr, "* "); |
| 1220 | |
| 1221 | #if 0 |
| 1222 | if (req->setValue.type_cast.byteLen) |
| 1223 | { |
| 1224 | strcat(expr, "("); |
| 1225 | strncat(expr, req->setValue.type_cast.text, |
| 1226 | req->setValue.type_cast.byteLen); |
| 1227 | strcat(expr, ") "); |
| 1228 | } |
| 1229 | #endif |
| 1230 | if (req->setValue.field.byteLen) |
| 1231 | strcat(expr, "("); |
| 1232 | |
| 1233 | strncat(expr, req->setValue.expression.text, |
| 1234 | req->setValue.expression.byteLen); |
| 1235 | |
| 1236 | if (req->setValue.field.byteLen) |
| 1237 | { |
| 1238 | strcat(expr, ")"); |
| 1239 | |
| 1240 | strncat(expr, req->setValue.field.text, |
| 1241 | req->setValue.field.byteLen); |
| 1242 | } |
| 1243 | |
| 1244 | execute_command_1(1, queue, "print %s = (%s) %s", expr, |
| 1245 | req->setValue.type_cast.text, |
| 1246 | req->setValue.value.text); |
| 1247 | } |
| 1248 | break; |
| 1249 | case DynamicLoadRType: |
| 1250 | { |
| 1251 | char *filename; |
| 1252 | |
| 1253 | filename = req->dynamicLoad.filenames.byteLen ? |
| 1254 | req->dynamicLoad.filenames.text : exec_file; |
| 1255 | |
| 1256 | switch (req->dynamicLoad.request->action) |
| 1257 | { |
| 1258 | case CDynamicLoadUpdateSymtab: |
| 1259 | execute_command_1(1, queue, "exec-file %s", filename); |
| 1260 | execute_command_1(1, queue, "symbol-file %s", filename); |
| 1261 | break; |
| 1262 | default: |
| 1263 | printf_filtered("DynamicLoadRType: unknown action=%d, filename=%s\n", |
| 1264 | req->dynamicLoad.request->action, |
| 1265 | req->dynamicLoad.filenames.text); |
| 1266 | break; |
| 1267 | } |
| 1268 | } |
| 1269 | break; |
| 1270 | default: |
| 1271 | fprintf(stderr, "Unknown Debugger request type = %d\n", |
| 1272 | req->head.request->reqType); |
| 1273 | break; |
| 1274 | } |
| 1275 | free (req); /* Should probably call CVFreeDebuggerRequest() here, but |
| 1276 | can't do so if interrupt level has mucked with req-> |
| 1277 | request. CVFreeDebuggerRequest() only ends up calling |
| 1278 | free() anyway! */ |
| 1279 | } |
| 1280 | } |
| 1281 | \f |
| 1282 | /* Return a bitmask indicating if the kernel or the pty did something |
| 1283 | interesting. Set poll to non-zero if you don't want to wait. */ |
| 1284 | |
| 1285 | static int |
| 1286 | wait_for_events(poll) |
| 1287 | int poll; |
| 1288 | { |
| 1289 | fd_set readfds; |
| 1290 | int numfds; |
| 1291 | int eventmask = 0; |
| 1292 | static struct timeval tv = {0}; |
| 1293 | |
| 1294 | /* Output all pending requests. */ |
| 1295 | CWriteRequestBuffer(conn); |
| 1296 | |
| 1297 | FD_ZERO(&readfds); |
| 1298 | |
| 1299 | /* Wait till there's some activity from the kernel or the pty. */ |
| 1300 | do |
| 1301 | { |
| 1302 | FD_SET(kerfd, &readfds); |
| 1303 | if (inferior_pty > 0) |
| 1304 | FD_SET(inferior_pty, &readfds); |
| 1305 | if (poll) |
| 1306 | numfds = select(sizeof(readfds)*8, &readfds, 0, 0, &tv); |
| 1307 | else |
| 1308 | numfds = select(sizeof(readfds)*8, &readfds, 0, 0, 0); |
| 1309 | } |
| 1310 | while (numfds <= 0 && !poll); |
| 1311 | |
| 1312 | if (FD_ISSET(inferior_pty, &readfds)) |
| 1313 | eventmask |= PTY_EVENT; |
| 1314 | |
| 1315 | if (FD_ISSET(kerfd, &readfds)) |
| 1316 | eventmask |= KERNEL_EVENT; |
| 1317 | |
| 1318 | return eventmask; |
| 1319 | } |
| 1320 | \f |
| 1321 | /* This is called from read_command_lines() to provide the text for breakpoint |
| 1322 | commands, which is supplied in a BreakCommands message. Each call to this |
| 1323 | routine supplies a single line of text, with the newline removed. */ |
| 1324 | |
| 1325 | /* This routine may be invoked in two different contexts. In the first, it |
| 1326 | is being called as a result of the BreakCommands message. In this case, |
| 1327 | all of the command text is immediately available. In the second case, it is |
| 1328 | called as a result of the user typing the 'command' command. The command |
| 1329 | text then needs to be glommed out of UserInput messages (and possibly other |
| 1330 | messages as well). The most 'straighforward' way of doing this is to |
| 1331 | basically simulate the main loop, but just accumulate the command text |
| 1332 | instead of sending it to execute_command(). */ |
| 1333 | |
| 1334 | char * |
| 1335 | energize_command_line_input(prompt, repeat) |
| 1336 | char *prompt; |
| 1337 | int repeat; |
| 1338 | { |
| 1339 | char *p; |
| 1340 | |
| 1341 | if (!energize) |
| 1342 | return command_line_input(prompt, repeat); |
| 1343 | |
| 1344 | if (doing_breakcommands_message) |
| 1345 | { |
| 1346 | if (command_line_length <= 0) |
| 1347 | return (char *)NULL; |
| 1348 | |
| 1349 | p = command_line_text; |
| 1350 | |
| 1351 | while (command_line_length-- > 0) |
| 1352 | { |
| 1353 | if (*command_line_text == '\n') |
| 1354 | { |
| 1355 | *command_line_text = '\000'; |
| 1356 | command_line_text++; |
| 1357 | break; |
| 1358 | } |
| 1359 | command_line_text++; |
| 1360 | } |
| 1361 | |
| 1362 | printf_filtered("%s\n", p); |
| 1363 | return p; |
| 1364 | } |
| 1365 | else |
| 1366 | { |
| 1367 | /* We come here when the user has typed the 'command' or 'define' command |
| 1368 | to the GDB window. We are basically deep inside of the 'command' |
| 1369 | command processing routine right now, and will be called to get a new |
| 1370 | line of input. We expect that kernel_dispatch will queue up only one |
| 1371 | command at a time. */ |
| 1372 | |
| 1373 | int eventmask; |
| 1374 | static char buf[100]; |
| 1375 | |
| 1376 | eventmask = wait_for_events(0); |
| 1377 | |
| 1378 | if (eventmask & PTY_EVENT) |
| 1379 | pty_to_kernel(); |
| 1380 | |
| 1381 | if (eventmask & KERNEL_EVENT) |
| 1382 | kernel_dispatch(1); /* Queue up commands */ |
| 1383 | |
| 1384 | /* Note that command has been echoed by the time we get here */ |
| 1385 | |
| 1386 | p = dequeue_command(); |
| 1387 | |
| 1388 | if (p) |
| 1389 | { |
| 1390 | strncpy(buf, p, sizeof(buf)); |
| 1391 | free(p); |
| 1392 | return buf; |
| 1393 | } |
| 1394 | else |
| 1395 | return NULL; |
| 1396 | } |
| 1397 | } |
| 1398 | \f |
| 1399 | /* Establish contact with the kernel. */ |
| 1400 | |
| 1401 | void |
| 1402 | energize_initialize(energize_id, execarg) |
| 1403 | char *energize_id; |
| 1404 | char *execarg; |
| 1405 | { |
| 1406 | CTtyRequest *req; |
| 1407 | char *ctmp; |
| 1408 | extern long strtol(char *str, char **ptr, int base); |
| 1409 | char pathname[MAXPATHLEN]; |
| 1410 | int n; |
| 1411 | |
| 1412 | if (!energize_id) |
| 1413 | return; |
| 1414 | |
| 1415 | if (!execarg) execarg = ""; |
| 1416 | |
| 1417 | exec_file = strdup(execarg); /* Save for later */ |
| 1418 | |
| 1419 | printf("\ngdb-debugger pid=%d\n", getpid()); /* XXX - debugging only */ |
| 1420 | |
| 1421 | /* First establish the connection with the kernel. */ |
| 1422 | |
| 1423 | kerfd = COpenClientSocket(NULL); |
| 1424 | if (kerfd < 0) { |
| 1425 | printf("COpenClientSocket() failed\n"); |
| 1426 | exit(1); |
| 1427 | } |
| 1428 | |
| 1429 | /* Setup for I/O interrupts when appropriate. */ |
| 1430 | |
| 1431 | n = fcntl(kerfd, F_GETFL, 0); |
| 1432 | #ifdef NCR486... |
| 1433 | O_SYNC |
| 1434 | #endif |
| 1435 | fcntl(kerfd, F_SETFL, n|FASYNC); |
| 1436 | fcntl(kerfd, F_SETOWN, getpid()); |
| 1437 | |
| 1438 | /* Setup connection buffering. */ |
| 1439 | |
| 1440 | CSetSocketBufferSize (kerfd, 12000); |
| 1441 | |
| 1442 | /* Generate a new connection control block. */ |
| 1443 | |
| 1444 | conn = NewConnection (0, kerfd, kerfd); |
| 1445 | if (!conn) { |
| 1446 | printf("NewConnection() failed\n"); |
| 1447 | exit(1); |
| 1448 | } |
| 1449 | |
| 1450 | #ifdef KERNEL_RECORD |
| 1451 | kerout = fopen("kernel.output", "+w"); |
| 1452 | |
| 1453 | CReadWriteHooks(conn, conn->previewMethod, conn->readMethod, kernel_record); |
| 1454 | #endif |
| 1455 | |
| 1456 | /* Tell the kernel that we are the "debugger". */ |
| 1457 | |
| 1458 | req = CWriteTtyRequest (conn, QueryConnectionRType); |
| 1459 | req->generic.queryconnection.major = 0; |
| 1460 | req->generic.queryconnection.minor = 0; |
| 1461 | req->generic.queryconnection.cadillacId1=strtol(energize_id, &ctmp, 16); |
| 1462 | req->generic.queryconnection.cadillacId2 = strtol(++ctmp, NULL, 16); |
| 1463 | req->generic.queryconnection.nProtocols = 1; |
| 1464 | CWriteProtocol (conn, 0, 0, "debugger"); |
| 1465 | CWriteLength (conn); |
| 1466 | |
| 1467 | /* Tell the kernel that we are actually running. */ |
| 1468 | |
| 1469 | /* KROCK ALERT!!! The kernel doesn't really care about the arguments to |
| 1470 | the program at all! It only cares that argument 7 be the name of the |
| 1471 | target program. So, we just fill in the rest of the slots with |
| 1472 | padding. I hope the kernel never cares about this! */ |
| 1473 | |
| 1474 | req = CWriteTtyRequest (conn, RunningProgramRType); |
| 1475 | req->runningprogram.argc = 8; |
| 1476 | getwd (pathname); |
| 1477 | CWriteVstring0 (conn, pathname); |
| 1478 | |
| 1479 | CWriteVstring0 (conn, "0"); |
| 1480 | CWriteVstring0 (conn, "1"); |
| 1481 | CWriteVstring0 (conn, "2"); |
| 1482 | CWriteVstring0 (conn, "3"); |
| 1483 | CWriteVstring0 (conn, "4"); |
| 1484 | CWriteVstring0 (conn, "5"); |
| 1485 | CWriteVstring0 (conn, "6"); |
| 1486 | CWriteVstring0 (conn, execarg); |
| 1487 | CWriteLength (conn); |
| 1488 | |
| 1489 | /* Tell the kernel our PID and all that */ |
| 1490 | |
| 1491 | program_id = 1; |
| 1492 | CVWriteDebugProgramInfo(conn, |
| 1493 | getpid(), |
| 1494 | program_id, |
| 1495 | execarg, |
| 1496 | ""); |
| 1497 | |
| 1498 | /* Tell the rest of the world that Energize is now set up. */ |
| 1499 | energize = 1; |
| 1500 | |
| 1501 | setsid(); /* Drop controlling tty, become pgrp master */ |
| 1502 | getpty(); /* Setup the pty */ |
| 1503 | dup2(inferior_tty, 0); /* Attach all GDB I/O to the pty */ |
| 1504 | dup2(inferior_tty, 1); |
| 1505 | dup2(inferior_tty, 2); |
| 1506 | } |
| 1507 | |
| 1508 | /* This is called from execute_command, and provides a wrapper around |
| 1509 | various command routines in a place where both protocol messages and |
| 1510 | user input both flow through. |
| 1511 | */ |
| 1512 | |
| 1513 | void |
| 1514 | energize_call_command(cmdblk, arg, from_tty) |
| 1515 | struct cmd_list_element *cmdblk; |
| 1516 | char *arg; |
| 1517 | int from_tty; |
| 1518 | { |
| 1519 | if (!energize) |
| 1520 | { |
| 1521 | (*cmdblk->function.cfunc) (arg, from_tty); |
| 1522 | return; |
| 1523 | } |
| 1524 | |
| 1525 | if (cmdblk->class == class_run) |
| 1526 | { |
| 1527 | go_busy(); |
| 1528 | has_run = 1; |
| 1529 | (*cmdblk->function.cfunc)(arg, from_tty); |
| 1530 | send_status(); |
| 1531 | } |
| 1532 | else |
| 1533 | (*cmdblk->function.cfunc)(arg, from_tty); |
| 1534 | |
| 1535 | if (strcmp(cmdblk->name, "up") == 0 |
| 1536 | || strcmp(cmdblk->name, "down") == 0 |
| 1537 | || strcmp(cmdblk->name, "frame") == 0) |
| 1538 | send_location(get_frame_info(selected_frame)->pc, |
| 1539 | selected_frame_level); |
| 1540 | print_prompt(); |
| 1541 | } |
| 1542 | |
| 1543 | void |
| 1544 | energize_new_process() |
| 1545 | { |
| 1546 | instance_id = inferior_pid; |
| 1547 | } |
| 1548 | |
| 1549 | static void |
| 1550 | iosig(signo) |
| 1551 | int signo; |
| 1552 | { |
| 1553 | while (1) |
| 1554 | { |
| 1555 | int eventmask; |
| 1556 | |
| 1557 | eventmask = wait_for_events(1); |
| 1558 | |
| 1559 | if (eventmask == 0) |
| 1560 | return; |
| 1561 | |
| 1562 | if (eventmask & PTY_EVENT) |
| 1563 | pty_to_kernel(); |
| 1564 | |
| 1565 | if (eventmask & KERNEL_EVENT) |
| 1566 | kernel_dispatch(1); |
| 1567 | } |
| 1568 | } |
| 1569 | |
| 1570 | int |
| 1571 | energize_wait(status) |
| 1572 | int *status; |
| 1573 | { |
| 1574 | int pid; |
| 1575 | |
| 1576 | if (!energize) |
| 1577 | return wait(status); |
| 1578 | |
| 1579 | signal(SIGIO, iosig); |
| 1580 | |
| 1581 | pid = wait(status); |
| 1582 | |
| 1583 | signal(SIGIO, SIG_DFL); |
| 1584 | return pid; |
| 1585 | } |
| 1586 | |
| 1587 | static void |
| 1588 | null_routine(arg) |
| 1589 | int arg; |
| 1590 | { |
| 1591 | } |
| 1592 | |
| 1593 | /* All requests from the Energize kernel eventually end up here. */ |
| 1594 | |
| 1595 | void |
| 1596 | energize_main_loop() |
| 1597 | { |
| 1598 | CTtyRequest *req; |
| 1599 | struct cleanup *old_chain; |
| 1600 | |
| 1601 | doing_breakcommands_message = 0; |
| 1602 | |
| 1603 | /* We will come thru here any time there is an error, so send status if |
| 1604 | necessary. */ |
| 1605 | |
| 1606 | send_status(); |
| 1607 | |
| 1608 | print_prompt(); |
| 1609 | |
| 1610 | /* The actual event loop! */ |
| 1611 | |
| 1612 | while (1) |
| 1613 | { |
| 1614 | int eventmask; |
| 1615 | char *cmd; |
| 1616 | |
| 1617 | old_chain = make_cleanup(null_routine, 0); |
| 1618 | |
| 1619 | /* First, empty out the command queue, then check for new requests. */ |
| 1620 | |
| 1621 | while (cmd = dequeue_command()) |
| 1622 | { |
| 1623 | execute_command_1(1, 0, cmd); |
| 1624 | free(cmd); |
| 1625 | } |
| 1626 | |
| 1627 | eventmask = wait_for_events(0); |
| 1628 | |
| 1629 | if (eventmask & PTY_EVENT) |
| 1630 | pty_to_kernel(); |
| 1631 | |
| 1632 | if (eventmask & KERNEL_EVENT) |
| 1633 | kernel_dispatch(0); |
| 1634 | |
| 1635 | bpstat_do_actions(&stop_bpstat); |
| 1636 | do_cleanups(old_chain); |
| 1637 | } |
| 1638 | } |