Commit | Line | Data |
---|---|---|
1744d4eb SG |
1 | /* Cadillac interface routines. |
2 | Copyright 1986, 1987, 1988, 1989, 1990, 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 | ||
bf226124 SG |
20 | #include "defs.h" |
21 | #include "symtab.h" | |
22 | #include "inferior.h" | |
23 | #include "command.h" | |
1744d4eb SG |
24 | #include <sys/types.h> |
25 | #include <sys/time.h> | |
26 | #include <sys/param.h> | |
27 | #include <connection.h> | |
28 | #include <genericreq.h> | |
29 | #include <debuggerreq.h> | |
30 | #include <debuggerconn.h> | |
31 | #include <ttyconn.h> | |
bf226124 SG |
32 | #include <varargs.h> |
33 | #include <sys/stat.h> | |
34 | #include <fcntl.h> | |
35 | #include <sys/filio.h> | |
36 | #include <setjmp.h> | |
37 | #include <signal.h> | |
38 | #include <sys/errno.h> | |
39 | #include <termios.h> | |
40 | #include <strings.h> | |
1744d4eb SG |
41 | |
42 | /* Connection block for debugger<=>kernel communications. */ | |
43 | static Connection *conn = 0; | |
44 | ||
45 | /* fd for our socket to the kernel. */ | |
46 | static int kerfd; | |
47 | ||
48 | /* The kernel's ID for this instance of the program. */ | |
49 | static int program_id; | |
bf226124 SG |
50 | |
51 | static int instance_id; | |
52 | ||
53 | /* The fd for the pty associated with the inferior. */ | |
54 | static int inferior_pty = -1; | |
55 | static int inferior_tty = -1; | |
56 | ||
57 | static int has_run = 0; | |
58 | ||
59 | extern int cadillac; | |
60 | ||
61 | char **pprompt; /* Pointer to pointer to prompt */ | |
1744d4eb | 62 | \f |
bf226124 SG |
63 | static void |
64 | prompt() | |
65 | { | |
66 | fputs_filtered(*pprompt, stdout); | |
67 | } | |
1744d4eb SG |
68 | |
69 | /* This routine redirects the output of fputs_filtered to the kernel so that | |
70 | the user can see what's going on in his debugger window. */ | |
71 | ||
72 | void | |
73 | cadillac_fputs(ptr) | |
74 | char *ptr; | |
bf226124 SG |
75 | { |
76 | if (conn) | |
77 | CVWriteTranscriptInfo (conn, instance_id, ptr); | |
78 | else | |
79 | fputs (ptr, stdout); | |
80 | } | |
81 | ||
82 | /* Copy all data from the pty to the kernel. */ | |
83 | ||
84 | static void | |
85 | pty_to_kernel() | |
1744d4eb SG |
86 | { |
87 | CTtyRequest *req; | |
bf226124 SG |
88 | char buf[1024]; |
89 | int cc; | |
1744d4eb | 90 | |
bf226124 | 91 | while (1) |
1744d4eb | 92 | { |
bf226124 SG |
93 | cc = read(inferior_pty, buf, sizeof(buf)); |
94 | ||
95 | if (cc == 0 | |
96 | || (cc < 0 | |
97 | && errno == EWOULDBLOCK)) | |
98 | break; | |
99 | ||
100 | if (cc < 0) | |
101 | { | |
102 | close(inferior_pty); | |
103 | inferior_pty = -1; | |
104 | perror("pty read error"); | |
105 | break; | |
106 | } | |
107 | ||
108 | req = CWriteTtyRequest(conn, TextIORType); | |
109 | CWriteVstringLen(conn, buf, cc); | |
110 | CWriteLength(conn); | |
111 | } | |
112 | CWriteRequestBuffer(conn); | |
113 | } | |
114 | ||
115 | /* Copy data from the kernel to the pty. */ | |
116 | ||
117 | static void | |
118 | kernel_to_pty(data, len) | |
119 | char *data; | |
120 | int len; | |
121 | { | |
122 | int cc; | |
123 | ||
124 | cc = write(inferior_pty, data, len); | |
125 | ||
126 | if (cc != len) | |
127 | { | |
128 | if (cc < 0) | |
129 | { | |
130 | close(inferior_pty); | |
131 | inferior_pty = -1; | |
132 | perror("pty write error"); | |
133 | return; | |
134 | } | |
135 | printf("Couldn't write all the data to the pty, wanted %d, got %d\n", | |
136 | len, cc); | |
1744d4eb | 137 | } |
bf226124 SG |
138 | } |
139 | ||
140 | /* Tell the kernel where we are in the program, and what the stack looks like. | |
141 | */ | |
142 | ||
143 | static void | |
144 | send_status() | |
145 | { | |
146 | static int linecount = 48; | |
147 | struct symtab_and_line sal; | |
148 | struct symbol *symbol; | |
149 | char *funcname, *filename; | |
150 | static int foo = 0; | |
151 | static int sent_prog_inst = 0; | |
152 | ||
153 | if (!has_run) | |
154 | return; | |
155 | ||
156 | if (inferior_pid == 0) /* target has died */ | |
157 | { | |
158 | CVWriteProgramTerminatedInfo(conn, | |
159 | instance_id, | |
160 | "" | |
161 | ); | |
162 | return; | |
163 | } | |
164 | ||
165 | sal = find_pc_line(stop_pc, 0); | |
166 | symbol = find_pc_function(stop_pc); | |
167 | ||
168 | funcname = symbol ? symbol->name : ""; | |
169 | filename = sal.symtab ? sal.symtab->filename : ""; | |
170 | ||
171 | if (!sent_prog_inst) | |
172 | { | |
173 | sent_prog_inst = 1; | |
174 | CVWriteProgramInstanceInfo(conn, | |
175 | program_id, | |
176 | instance_id, | |
177 | "", /* hostname */ | |
178 | "", /* arglist */ | |
179 | "" | |
180 | ); | |
181 | } | |
182 | ||
183 | CVWriteStackSizeInfo(conn, | |
184 | instance_id, | |
185 | 1, /* XXX - frame depth */ | |
186 | CInnerFrameIs0, | |
187 | foo++ ? 1 : 0, /* XXX - frame diff */ | |
188 | "" | |
189 | ); | |
190 | ||
191 | CVWriteStackFrameInfo(conn, | |
192 | instance_id, | |
193 | sal.line, | |
194 | CFileLinePos, | |
195 | 0, /* XXX - frame # */ | |
196 | funcname, | |
197 | filename, | |
198 | "" /* XXX ? transcript */ | |
199 | ); | |
200 | ||
201 | CVWriteProgramStoppedInfo(conn, | |
202 | instance_id, | |
203 | 0, /* XXX - breakpoint # or signal # */ | |
204 | CDebuggerCommand, | |
205 | funcname, | |
206 | "" /* XXX ? transcript */ | |
207 | ); | |
208 | } | |
209 | ||
210 | /* Tell the kernel that the target is now running. */ | |
211 | ||
212 | static void | |
213 | go_busy() | |
214 | { | |
215 | CVWriteProgramBusyInfo(conn, | |
216 | instance_id, | |
217 | ""); /* XXX ? transcript */ | |
218 | CWriteRequestBuffer(conn); /* Must take place synchronusly! */ | |
1744d4eb SG |
219 | } |
220 | ||
221 | /* This wrapper routine is needed because execute_command modifies the command | |
222 | string that it's given. It also echos the commands. */ | |
223 | ||
224 | static void | |
bf226124 SG |
225 | execute_command_1(va_alist) |
226 | va_dcl | |
1744d4eb | 227 | { |
bf226124 SG |
228 | char buf[100]; /* XXX - make buf dynamic! */ |
229 | char *cmd; | |
230 | va_list args; | |
231 | ||
232 | va_start(args); | |
1744d4eb | 233 | |
bf226124 SG |
234 | cmd = va_arg(args, char *); |
235 | ||
236 | vsprintf(buf, cmd, args); | |
237 | ||
238 | printf_filtered("%s\n", buf); | |
239 | execute_command(buf, 1); | |
240 | ||
241 | va_end(args); | |
1744d4eb SG |
242 | } |
243 | ||
bf226124 SG |
244 | #ifdef KERNEL_RECORD |
245 | FILE *kerout; | |
246 | ||
247 | static int | |
248 | kernel_record(fd, ptr, num) | |
249 | int fd, num; | |
250 | char *ptr; | |
251 | ||
252 | { | |
253 | fwrite(ptr, num, 1, kerout); | |
254 | fflush(kerout); | |
255 | return write(fd, ptr, num); | |
256 | } | |
257 | #endif | |
258 | ||
259 | void | |
260 | cadillac_condition_breakpoint(b) | |
261 | struct breakpoint *b; | |
262 | { | |
263 | CVWriteBreakConditionInfo(conn, | |
264 | instance_id, | |
265 | b->number, | |
266 | b->cond_string ? b->cond_string : "", | |
267 | "" /* transcript */ | |
268 | ); | |
269 | } | |
270 | ||
271 | void | |
272 | cadillac_commands_breakpoint(b) | |
273 | struct breakpoint *b; | |
274 | { | |
275 | struct command_line *l; | |
276 | ||
277 | CVWriteBreakCommandBegInfo(conn, | |
278 | instance_id, | |
279 | b->number, | |
280 | ""); /* transcript */ | |
281 | ||
282 | for (l = b->commands; l; l = l->next) | |
283 | CVWriteBreakCommandEntryInfo(conn, | |
284 | instance_id, | |
285 | l->line, | |
286 | ""); /* transcript */ | |
287 | ||
288 | CVWriteBreakCommandEndInfo(conn, | |
289 | instance_id, | |
290 | ""); /* transcript */ | |
291 | } | |
292 | ||
293 | static void | |
294 | breakpoint_notify(b, action) | |
295 | struct breakpoint *b; | |
296 | int action; | |
297 | { | |
298 | struct symtab *s; | |
299 | struct symbol *s1; | |
300 | char *funcname = "", *filename = "", *included_in_filename = ""; | |
301 | ||
302 | if (b->type != bp_breakpoint) | |
303 | return; | |
304 | ||
305 | s = b->symtab; | |
306 | ||
307 | if (s) | |
308 | { | |
309 | filename = s->filename; | |
310 | s1 = find_pc_function(b->address); | |
311 | if (s1) | |
312 | funcname = SYMBOL_NAME(s1); | |
313 | } | |
314 | ||
315 | CVWriteBreakpointInfo (conn, | |
316 | instance_id, | |
317 | b->number, | |
318 | b->line_number, | |
319 | CFileLinePos, | |
320 | CBreakOnInstrAccess, | |
321 | action, | |
322 | b->ignore_count, | |
323 | funcname, | |
324 | filename, | |
325 | "", /* included_in_filename */ | |
326 | "" /* transcript */ | |
327 | ); | |
328 | ||
329 | if (b->commands) | |
330 | cadillac_commands_breakpoint(b); | |
331 | } | |
332 | ||
333 | void | |
334 | cadillac_create_breakpoint(b) | |
335 | struct breakpoint *b; | |
336 | { | |
337 | breakpoint_notify(b, CEnableBreakpoint); | |
338 | } | |
339 | ||
340 | void | |
341 | cadillac_delete_breakpoint(b) | |
342 | struct breakpoint *b; | |
343 | { | |
344 | breakpoint_notify(b, CDeleteBreakpoint); | |
345 | } | |
346 | ||
347 | void | |
348 | cadillac_enable_breakpoint(b) | |
349 | struct breakpoint *b; | |
350 | { | |
351 | breakpoint_notify(b, CEnableBreakpoint); | |
352 | } | |
353 | ||
354 | void | |
355 | cadillac_disable_breakpoint(b) | |
356 | struct breakpoint *b; | |
357 | { | |
358 | breakpoint_notify(b, CDisableBreakpoint); | |
359 | } | |
360 | ||
361 | void | |
362 | cadillac_ignore_breakpoint(b) | |
363 | struct breakpoint *b; | |
364 | { | |
365 | breakpoint_notify(b, CBreakAttrUnchanged); | |
366 | } | |
367 | ||
368 | static int command_line_length = 0; | |
369 | static char *command_line_text = 0; | |
370 | ||
371 | int | |
372 | cadillac_reading() | |
373 | { | |
374 | if (command_line_text) | |
375 | return 1; | |
376 | else | |
377 | return 0; | |
378 | } | |
379 | ||
380 | char * | |
381 | cadillac_command_line_input() | |
382 | { | |
383 | char *p; | |
384 | ||
385 | if (command_line_length <= 0) | |
386 | return (char *)NULL; | |
387 | ||
388 | p = command_line_text; | |
389 | ||
390 | while (command_line_length-- > 0) | |
391 | { | |
392 | if (*command_line_text == '\n') | |
393 | { | |
394 | *command_line_text = '\000'; | |
395 | command_line_text++; | |
396 | break; | |
397 | } | |
398 | command_line_text++; | |
399 | } | |
400 | ||
401 | return p; | |
402 | } | |
403 | ||
404 | /* Open up a pty and its associated tty. Return the fd of the tty. */ | |
405 | ||
406 | char * | |
407 | cadillac_getpty() | |
408 | { | |
409 | int n, ptyfd, ttyfd; | |
410 | static char dev[30]; | |
411 | struct stat statbuf; | |
412 | struct termios termios; | |
413 | ||
414 | #define HIGHPTY (('z' - 'p') * 16 - 1) | |
415 | ||
416 | if (inferior_pty >= 0) /* Only do this once */ | |
417 | return dev; | |
418 | ||
419 | for (n = 0; n <= HIGHPTY; n++) | |
420 | { | |
421 | sprintf(dev, "/dev/pty%c%x", n/16 + 'p', n%16); | |
422 | if (stat(dev, &statbuf)) | |
423 | break; | |
424 | ptyfd = open(dev, O_RDWR); | |
425 | if (ptyfd < 0) | |
426 | continue; | |
427 | sprintf(dev, "/dev/tty%c%x", n/16 + 'p', n%16); | |
428 | ttyfd = open(dev, O_RDWR); | |
429 | if (ttyfd < 0) {close(ptyfd); continue;} | |
430 | ||
431 | /* Setup pty for non-blocking I/O. Also make it give us a SIGIO when | |
432 | there's data available. */ | |
433 | ||
434 | n = fcntl(ptyfd, F_GETFL, 0); | |
435 | fcntl(ptyfd, F_SETFL, n|FNDELAY|FASYNC); | |
436 | fcntl(ptyfd, F_SETOWN, getpid()); | |
437 | ||
438 | tcgetattr(ttyfd, &termios); | |
439 | termios.c_oflag &= ~OPOST; /* No post-processing */ | |
440 | tcsetattr(ttyfd, TCSANOW, &termios); | |
441 | ||
442 | inferior_pty = ptyfd; | |
443 | inferior_tty = ttyfd; | |
444 | return dev; | |
445 | } | |
446 | ||
447 | error ("getpty: can't get a pty\n"); | |
448 | } | |
449 | \f | |
450 | /* Examine a protocol packet from the driver. */ | |
451 | ||
452 | static int | |
453 | kernel_dispatch(interrupt) | |
454 | int interrupt; /* Non-zero means we are at interrupt level | |
455 | and can only do a few commands. */ | |
456 | { | |
457 | register CHeader *head; | |
458 | ||
459 | head = (CHeader *)CPeekNextRequest (conn); | |
460 | if (head == NULL) | |
461 | { | |
462 | fprintf (stderr, "EOF on kernel read!\n"); | |
463 | exit (1); | |
464 | } | |
465 | ||
466 | if (interrupt) | |
467 | switch (head->reqType) | |
468 | { | |
469 | case KillProgramRType: | |
470 | case TextIORType: | |
471 | case StopRType: | |
472 | break; | |
473 | default: | |
474 | return; | |
475 | } | |
476 | ||
477 | if (head->reqType < LastTtyRequestRType) | |
478 | { | |
479 | CTtyRequest* req = CReadTtyRequest (conn); | |
480 | switch (req->head.reqType) | |
481 | { | |
482 | case AcceptConnectionRType: | |
483 | /* Tell the rest of the world that cadillac is now set up */ | |
484 | CSkipRequest (conn); | |
485 | break; | |
486 | ||
487 | case RefuseConnectionRType: | |
488 | fprintf (stderr, "Debugger connection refused\n"); | |
489 | exit (1); | |
490 | ||
491 | case KillProgramRType: | |
492 | exit (0); | |
493 | ||
494 | case TextIORType: | |
495 | { | |
496 | char *p; | |
497 | ReqLen len; | |
498 | ||
499 | p = CGetVstring(conn, &len); | |
500 | kernel_to_pty(p, len); | |
501 | } | |
502 | break; | |
503 | default: | |
504 | fprintf(stderr, "Unknown request type = %d\n", | |
505 | req->head.reqType); | |
506 | break; | |
507 | } | |
508 | } | |
509 | else | |
510 | { | |
511 | CVDebuggerRequest *req = CVReadDebuggerRequest (conn); | |
512 | if (!req) | |
513 | { | |
514 | fprintf (stderr, "CVReadDebuggerRequest returned NULL, type = %d\n", | |
515 | head->reqType); | |
516 | exit(1); | |
517 | } | |
518 | ||
519 | switch (req->head.request->reqType) | |
520 | { | |
521 | case OpenProgramInstanceRType: | |
522 | { | |
523 | char *arglist, buf[100]; /* XXX - Make buf dynamic! */ | |
524 | int arglen; | |
525 | /* XXX - should notice when program_id changes */ | |
526 | arglist = req->openProgramInstance.progArglist.text; | |
527 | arglen = req->openProgramInstance.progArglist.byteLen; | |
528 | ||
529 | execute_command_1("break main"); | |
530 | execute_command_1("enable delete $bpnum"); | |
531 | if (arglist) | |
532 | { | |
533 | execute_command_1("set args %.*s", arglen, arglist); | |
534 | } | |
535 | execute_command_1("run"); | |
536 | } | |
537 | break; | |
538 | case QuitDebuggerRType: | |
539 | exit (0); | |
540 | case RunRType: | |
541 | if (req->run.request->useArglist == CNewArglist) | |
542 | { | |
543 | execute_command_1("set args %.*s", | |
544 | req->run.progArglist.byteLen, | |
545 | req->run.progArglist.text); | |
546 | } | |
547 | execute_command_1("run"); | |
548 | break; | |
549 | case ContinueRType: | |
550 | execute_command_1("continue"); | |
551 | break; | |
552 | case StepRType: | |
553 | execute_command_1("step %d", req->step.request->stepCount); | |
554 | break; | |
555 | case NextRType: | |
556 | execute_command_1("next %d", req->next.request->nextCount); | |
557 | break; | |
558 | case ChangeStackFrameRType: | |
559 | switch (req->changeStackFrame.request->frameMovement) | |
560 | { | |
561 | case CToCurrentStackFrame: | |
562 | execute_command_1("frame %d", | |
563 | req->changeStackFrame.request->frameNo); | |
564 | break; | |
565 | case CToInnerStackFrame: | |
566 | execute_command_1("down %d", | |
567 | req->changeStackFrame.request->frameNo); | |
568 | break; | |
569 | case CToOuterStackFrame: | |
570 | execute_command_1("up %d", | |
571 | req->changeStackFrame.request->frameNo); | |
572 | break; | |
573 | case CToAbsoluteStackFrame: | |
574 | printf_filtered("ChangeStackFrame ToAbsolute\n"); | |
575 | break; | |
576 | } | |
577 | break; | |
578 | case BackTraceRType: | |
579 | /* XXX - deal with limit??? */ | |
580 | execute_command_1("backtrace"); | |
581 | break; | |
582 | case FinishRType: | |
583 | execute_command_1("finish"); | |
584 | break; | |
585 | case TerminateProgramRType: | |
586 | execute_command_1("kill"); | |
587 | break; | |
588 | case NewBreakpointRType: | |
589 | { | |
590 | char *tail; | |
591 | int skipped; | |
592 | ||
593 | tail = rindex(req->newBreakpoint.fileName.text, '/'); | |
594 | if (!tail) | |
595 | tail = req->newBreakpoint.fileName.text; | |
596 | else | |
597 | tail++; | |
598 | skipped = tail - req->newBreakpoint.fileName.text; | |
599 | execute_command_1("break %.*s:%d", | |
600 | req->newBreakpoint.fileName.byteLen - skipped, | |
601 | tail, | |
602 | req->newBreakpoint.request->fileLinePos); | |
603 | } | |
604 | break; | |
605 | case StopRType: | |
606 | { | |
607 | extern int pgrp_inferior; | |
608 | killpg(pgrp_inferior, SIGINT); | |
609 | } | |
610 | break; | |
611 | case UserInputRType: | |
612 | { | |
613 | char *text; | |
614 | long len; | |
615 | ||
616 | /* XXX - should really break command up into seperate lines | |
617 | and spoon-feed it to execute_command */ | |
618 | ||
619 | text = req->userInput.userInput.text; | |
620 | len = req->userInput.userInput.byteLen; | |
621 | ||
622 | if (text[len-1] == '\n') text[len-1] = '\000'; | |
623 | execute_command (text); | |
624 | break; | |
625 | } | |
626 | case ChangeBreakpointRType: | |
627 | switch (req->changeBreakpoint.request->breakpointAttr) | |
628 | { | |
629 | case CEnableBreakpoint: | |
630 | execute_command_1("enable %d", | |
631 | req->changeBreakpoint.request->breakpointId); | |
632 | break; | |
633 | case CDisableBreakpoint: | |
634 | execute_command_1("disable %d", | |
635 | req->changeBreakpoint.request->breakpointId); | |
636 | break; | |
637 | case CDeleteBreakpoint: | |
638 | execute_command_1("delete %d", | |
639 | req->changeBreakpoint.request->breakpointId); | |
640 | break; | |
641 | case CBreakAttrUnchanged: | |
642 | execute_command_1("ignore %d %d", | |
643 | req->changeBreakpoint.request->breakpointId, | |
644 | req->changeBreakpoint.request->ignoreCount); | |
645 | break; | |
646 | default: | |
647 | printf_filtered("Got to ChangeBreakpoint\n"); | |
648 | printf_filtered(" breakpointId = %d\n", | |
649 | req->changeBreakpoint.request->breakpointId); | |
650 | printf_filtered(" breakpointType = %d\n", | |
651 | req->changeBreakpoint.request->breakpointType); | |
652 | printf_filtered(" breakpointAttr = %d\n", | |
653 | req->changeBreakpoint.request->breakpointAttr); | |
654 | printf_filtered(" ignoreCount = %d\n", | |
655 | req->changeBreakpoint.request->ignoreCount); | |
656 | break; | |
657 | } | |
658 | break; | |
659 | case BreakConditionRType: | |
660 | execute_command_1("condition %d %.*s", | |
661 | req->breakCondition.request->breakpointId, | |
662 | req->breakCondition.condition.byteLen, | |
663 | req->breakCondition.condition.text); | |
664 | break; | |
665 | case BreakCommandsRType: | |
666 | /* Put pointers to where cadillac_command_line_input() can find | |
667 | them. */ | |
668 | command_line_length = req->breakCommands.commands.byteLen; | |
669 | command_line_text = req->breakCommands.commands.text; | |
670 | execute_command_1("commands %d", | |
671 | req->breakCommands.request->breakpointId); | |
672 | command_line_text = (char *)NULL; | |
673 | command_line_length = 0; | |
674 | break; | |
675 | default: | |
676 | fprintf(stderr, "Unknown request type = %d\n", | |
677 | req->head.request->reqType); | |
678 | break; | |
679 | } | |
680 | free (req); /* Should probably call CVFreeDebuggerRequest() here, but | |
681 | can't do so if interrupt level has mucked with req-> | |
682 | request. CVFreeDebuggerRequest() only ends up calling | |
683 | free() anyway! */ | |
684 | } | |
685 | } | |
686 | \f | |
687 | #define KERNEL_EVENT 1 | |
688 | #define PTY_EVENT 2 | |
689 | ||
690 | /* Return a bitmask indicating if the kernel or the pty did something | |
691 | interesting. Set poll to non-zero if you don't want to wait. */ | |
692 | ||
693 | static int | |
694 | wait_for_events(poll) | |
695 | int poll; | |
696 | { | |
697 | fd_set readfds; | |
698 | int numfds; | |
699 | int eventmask = 0; | |
700 | static struct timeval tv = {0}; | |
701 | ||
702 | /* Output all pending requests. */ | |
703 | CWriteRequestBuffer(conn); | |
704 | ||
705 | /* Wait till there's some activity from the kernel or the pty. */ | |
706 | do | |
707 | { | |
708 | FD_ZERO(&readfds); | |
709 | FD_SET(kerfd, &readfds); | |
710 | if (inferior_pty > 0) | |
711 | FD_SET(inferior_pty, &readfds); | |
712 | if (poll) | |
713 | numfds = select(sizeof(readfds)*8, &readfds, 0, 0, &tv); | |
714 | else | |
715 | numfds = select(sizeof(readfds)*8, &readfds, 0, 0, 0); | |
716 | } | |
717 | while (numfds <= 0 && !poll); | |
718 | ||
719 | if (FD_ISSET(inferior_pty, &readfds)) | |
720 | eventmask |= PTY_EVENT; | |
721 | ||
722 | if (FD_ISSET(kerfd, &readfds)) | |
723 | eventmask |= KERNEL_EVENT; | |
724 | ||
725 | return eventmask; | |
726 | } | |
727 | \f | |
1744d4eb SG |
728 | /* Establish contact with the kernel. */ |
729 | ||
730 | void | |
731 | cadillac_initialize(cadillac_id, execarg) | |
732 | char *cadillac_id; | |
733 | char *execarg; | |
734 | { | |
735 | CTtyRequest *req; | |
736 | char *ctmp; | |
737 | extern long strtol(char *str, char **ptr, int base); | |
738 | char pathname[MAXPATHLEN]; | |
bf226124 | 739 | int n; |
1744d4eb SG |
740 | |
741 | if (!execarg) execarg = ""; | |
742 | ||
743 | printf("gdb-debugger pid=%d\n", getpid()); /* XXX - debugging only */ | |
744 | ||
745 | /* First establish the connection with the kernel. */ | |
746 | ||
747 | kerfd = COpenClientSocket(NULL); | |
748 | if (kerfd < 0) { | |
749 | printf("COpenClientSocket() failed\n"); | |
750 | exit(1); | |
751 | } | |
752 | ||
bf226124 SG |
753 | /* Setup for I/O interrupts when appropriate. */ |
754 | ||
755 | n = fcntl(kerfd, F_GETFL, 0); | |
756 | fcntl(kerfd, F_SETFL, n|FASYNC); | |
757 | fcntl(kerfd, F_SETOWN, getpid()); | |
758 | ||
1744d4eb SG |
759 | /* Setup connection buffering. */ |
760 | ||
761 | CSetSocketBufferSize (kerfd, 12000); | |
762 | ||
763 | /* Generate a new connection control block. */ | |
764 | ||
765 | conn = NewConnection (0, kerfd, kerfd); | |
766 | if (!conn) { | |
767 | printf("NewConnection() failed\n"); | |
768 | exit(1); | |
769 | } | |
770 | ||
bf226124 SG |
771 | #ifdef KERNEL_RECORD |
772 | kerout = fopen("kernel.output", "+w"); | |
773 | ||
774 | CReadWriteHooks(conn, conn->previewMethod, conn->readMethod, kernel_record); | |
775 | #endif | |
776 | ||
1744d4eb SG |
777 | /* Tell the kernel that we are the "debugger". */ |
778 | ||
779 | req = CWriteTtyRequest (conn, QueryConnectionRType); | |
780 | req->generic.queryconnection.major = 0; | |
781 | req->generic.queryconnection.minor = 0; | |
782 | req->generic.queryconnection.cadillacId1=strtol(cadillac_id, &ctmp, 16); | |
783 | req->generic.queryconnection.cadillacId2 = strtol(++ctmp, NULL, 16); | |
784 | req->generic.queryconnection.nProtocols = 1; | |
785 | CWriteProtocol (conn, 0, 0, "debugger"); | |
786 | CWriteLength (conn); | |
787 | ||
788 | /* Tell the kernel that we are actually running. */ | |
789 | ||
790 | /* KROCK ALERT!!! The kernel doesn't really care about the arguments to | |
791 | the program at all! It only cares that argument 7 be the name of the | |
792 | target program. So, we just fill in the rest of the slots with | |
793 | padding. I hope the kernel never cares about this! */ | |
794 | ||
795 | req = CWriteTtyRequest (conn, RunningProgramRType); | |
796 | req->runningprogram.argc = 8; | |
797 | getwd (pathname); | |
798 | CWriteVstring0 (conn, pathname); | |
799 | ||
800 | CWriteVstring0 (conn, "0"); | |
801 | CWriteVstring0 (conn, "1"); | |
802 | CWriteVstring0 (conn, "2"); | |
803 | CWriteVstring0 (conn, "3"); | |
804 | CWriteVstring0 (conn, "4"); | |
805 | CWriteVstring0 (conn, "5"); | |
806 | CWriteVstring0 (conn, "6"); | |
807 | CWriteVstring0 (conn, execarg); | |
808 | CWriteLength (conn); | |
bf226124 SG |
809 | |
810 | /* Tell the kernel our PID and all that */ | |
811 | ||
812 | program_id = 1; | |
813 | CVWriteDebugProgramInfo(conn, | |
814 | getpid(), | |
815 | program_id, | |
816 | execarg, | |
817 | ""); | |
818 | ||
819 | /* Tell the rest of the world that Cadillac is now set up. */ | |
820 | cadillac = 1; | |
1744d4eb SG |
821 | } |
822 | ||
bf226124 SG |
823 | /* This is called from execute_command, and provides a wrapper around |
824 | various command routines in a place where both protocol messages and | |
825 | user input both flow through. | |
826 | */ | |
1744d4eb SG |
827 | |
828 | void | |
bf226124 SG |
829 | cadillac_call_command(cmdblk, arg, from_tty) |
830 | struct cmd_list_element *cmdblk; | |
831 | char *arg; | |
832 | int from_tty; | |
1744d4eb | 833 | { |
bf226124 SG |
834 | if (cmdblk->class == class_run) |
835 | { | |
836 | go_busy(); | |
837 | has_run = 1; | |
838 | (*cmdblk->function.cfunc)(arg, from_tty); | |
839 | send_status(); | |
840 | } | |
841 | else | |
842 | (*cmdblk->function.cfunc)(arg, from_tty); | |
1744d4eb | 843 | |
bf226124 SG |
844 | prompt(); |
845 | } | |
1744d4eb | 846 | |
bf226124 SG |
847 | void |
848 | cadillac_new_process() | |
849 | { | |
850 | instance_id = inferior_pid; | |
851 | } | |
852 | ||
853 | static void | |
854 | iosig() | |
855 | { | |
1744d4eb SG |
856 | while (1) |
857 | { | |
bf226124 | 858 | int eventmask; |
1744d4eb | 859 | |
bf226124 | 860 | eventmask = wait_for_events(1); |
1744d4eb | 861 | |
bf226124 SG |
862 | if (eventmask == 0) |
863 | return; | |
1744d4eb | 864 | |
bf226124 SG |
865 | if (eventmask & PTY_EVENT) |
866 | pty_to_kernel(); | |
1744d4eb | 867 | |
bf226124 SG |
868 | if (eventmask & KERNEL_EVENT) |
869 | kernel_dispatch(1); | |
870 | } | |
871 | } | |
1744d4eb | 872 | |
bf226124 SG |
873 | int |
874 | cadillac_wait(status) | |
875 | int *status; | |
876 | { | |
877 | int pid; | |
1744d4eb | 878 | |
bf226124 | 879 | signal(SIGIO, iosig); |
1744d4eb | 880 | |
bf226124 | 881 | pid = wait(status); |
1744d4eb | 882 | |
bf226124 SG |
883 | signal(SIGIO, SIG_DFL); |
884 | return pid; | |
885 | } | |
1744d4eb | 886 | |
bf226124 SG |
887 | static void |
888 | null_routine(arg) | |
889 | int arg; | |
890 | { | |
891 | } | |
1744d4eb | 892 | |
bf226124 | 893 | /* All requests from the Cadillac kernel eventually end up here. */ |
1744d4eb | 894 | |
bf226124 SG |
895 | void |
896 | cadillac_main_loop(pp) | |
897 | char **pp; | |
898 | { | |
899 | CTtyRequest *req; | |
900 | struct cleanup *old_chain; | |
901 | ||
902 | pprompt = pp; | |
903 | ||
904 | /* We will come thru here any time there is an error, so send status if | |
905 | necessary. */ | |
906 | ||
907 | send_status(); | |
908 | ||
909 | prompt(); | |
910 | ||
911 | /* The actual event loop! */ | |
912 | ||
913 | while (1) | |
914 | { | |
915 | int eventmask; | |
916 | ||
917 | eventmask = wait_for_events(0); | |
918 | ||
919 | if (eventmask & PTY_EVENT) | |
920 | pty_to_kernel(); | |
921 | ||
922 | if (eventmask & KERNEL_EVENT) | |
923 | { | |
924 | old_chain = make_cleanup(null_routine, 0); | |
925 | kernel_dispatch(0); | |
926 | bpstat_do_actions(&stop_bpstat); | |
927 | do_cleanups(old_chain); | |
1744d4eb SG |
928 | } |
929 | } | |
930 | } |