Commit | Line | Data |
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c906108c | 1 | /* Remote debugging interface for Tandem ST2000 phone switch, for GDB. |
9846de1b | 2 | Copyright 1990, 1991, 1992 Free Software Foundation, Inc. |
c906108c SS |
3 | Contributed by Cygnus Support. Written by Jim Kingdon for Cygnus. |
4 | ||
c5aa993b | 5 | This file is part of GDB. |
c906108c | 6 | |
c5aa993b JM |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2 of the License, or | |
10 | (at your option) any later version. | |
c906108c | 11 | |
c5aa993b JM |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
c906108c | 16 | |
c5aa993b JM |
17 | You should have received a copy of the GNU General Public License |
18 | along with this program; if not, write to the Free Software | |
19 | Foundation, Inc., 59 Temple Place - Suite 330, | |
20 | Boston, MA 02111-1307, USA. */ | |
c906108c SS |
21 | |
22 | /* This file was derived from remote-eb.c, which did a similar job, but for | |
23 | an AMD-29K running EBMON. That file was in turn derived from remote.c | |
24 | as mentioned in the following comment (left in for comic relief): | |
25 | ||
c5aa993b | 26 | "This is like remote.c but is for an esoteric situation-- |
c906108c SS |
27 | having an a29k board in a PC hooked up to a unix machine with |
28 | a serial line, and running ctty com1 on the PC, through which | |
29 | the unix machine can run ebmon. Not to mention that the PC | |
30 | has PC/NFS, so it can access the same executables that gdb can, | |
31 | over the net in real time." | |
32 | ||
33 | In reality, this module talks to a debug monitor called 'STDEBUG', which | |
34 | runs in a phone switch. We communicate with STDEBUG via either a direct | |
35 | serial line, or a TCP (or possibly TELNET) stream to a terminal multiplexor, | |
36 | which in turn talks to the phone switch. */ | |
37 | ||
38 | #include "defs.h" | |
39 | #include "gdbcore.h" | |
40 | #include "target.h" | |
41 | #include "wait.h" | |
c906108c | 42 | #include <signal.h> |
43ff13b4 | 43 | #include "gdb_string.h" |
9846de1b | 44 | #include <sys/types.h> |
c906108c SS |
45 | #include "serial.h" |
46 | ||
c5aa993b | 47 | extern struct target_ops st2000_ops; /* Forward declaration */ |
c906108c | 48 | |
c5aa993b JM |
49 | static void st2000_close (); |
50 | static void st2000_fetch_register (); | |
51 | static void st2000_store_register (); | |
c906108c SS |
52 | |
53 | #define LOG_FILE "st2000.log" | |
54 | #if defined (LOG_FILE) | |
55 | FILE *log_file; | |
56 | #endif | |
57 | ||
58 | static int timeout = 24; | |
59 | ||
60 | /* Descriptor for I/O to remote machine. Initialize it to -1 so that | |
61 | st2000_open knows that we don't have a file open when the program | |
62 | starts. */ | |
63 | ||
64 | static serial_t st2000_desc; | |
65 | ||
66 | /* Send data to stdebug. Works just like printf. */ | |
67 | ||
68 | static void | |
c5aa993b | 69 | printf_stdebug (char *pattern,...) |
c906108c SS |
70 | { |
71 | va_list args; | |
72 | char buf[200]; | |
73 | ||
c5aa993b | 74 | va_start (args, pattern); |
c906108c | 75 | |
c5aa993b JM |
76 | vsprintf (buf, pattern, args); |
77 | va_end (args); | |
c906108c | 78 | |
c5aa993b JM |
79 | if (SERIAL_WRITE (st2000_desc, buf, strlen (buf))) |
80 | fprintf (stderr, "SERIAL_WRITE failed: %s\n", safe_strerror (errno)); | |
c906108c SS |
81 | } |
82 | ||
83 | /* Read a character from the remote system, doing all the fancy timeout | |
84 | stuff. */ | |
85 | ||
86 | static int | |
c5aa993b | 87 | readchar (timeout) |
c906108c SS |
88 | int timeout; |
89 | { | |
90 | int c; | |
91 | ||
c5aa993b | 92 | c = SERIAL_READCHAR (st2000_desc, timeout); |
c906108c SS |
93 | |
94 | #ifdef LOG_FILE | |
c5aa993b | 95 | putc (c & 0x7f, log_file); |
c906108c SS |
96 | #endif |
97 | ||
98 | if (c >= 0) | |
99 | return c & 0x7f; | |
100 | ||
101 | if (c == SERIAL_TIMEOUT) | |
102 | { | |
103 | if (timeout == 0) | |
104 | return c; /* Polls shouldn't generate timeout errors */ | |
105 | ||
c5aa993b | 106 | error ("Timeout reading from remote system."); |
c906108c SS |
107 | } |
108 | ||
c5aa993b | 109 | perror_with_name ("remote-st2000"); |
c906108c SS |
110 | } |
111 | ||
112 | /* Scan input from the remote system, until STRING is found. If DISCARD is | |
113 | non-zero, then discard non-matching input, else print it out. | |
114 | Let the user break out immediately. */ | |
115 | static void | |
c5aa993b | 116 | expect (string, discard) |
c906108c SS |
117 | char *string; |
118 | int discard; | |
119 | { | |
120 | char *p = string; | |
121 | int c; | |
122 | ||
123 | immediate_quit = 1; | |
124 | while (1) | |
125 | { | |
c5aa993b | 126 | c = readchar (timeout); |
c906108c SS |
127 | if (c == *p++) |
128 | { | |
129 | if (*p == '\0') | |
130 | { | |
131 | immediate_quit = 0; | |
132 | return; | |
133 | } | |
134 | } | |
135 | else | |
136 | { | |
137 | if (!discard) | |
138 | { | |
c5aa993b JM |
139 | fwrite (string, 1, (p - 1) - string, stdout); |
140 | putchar ((char) c); | |
141 | fflush (stdout); | |
c906108c SS |
142 | } |
143 | p = string; | |
144 | } | |
145 | } | |
146 | } | |
147 | ||
148 | /* Keep discarding input until we see the STDEBUG prompt. | |
149 | ||
150 | The convention for dealing with the prompt is that you | |
151 | o give your command | |
152 | o *then* wait for the prompt. | |
153 | ||
154 | Thus the last thing that a procedure does with the serial line | |
155 | will be an expect_prompt(). Exception: st2000_resume does not | |
156 | wait for the prompt, because the terminal is being handed over | |
157 | to the inferior. However, the next thing which happens after that | |
158 | is a st2000_wait which does wait for the prompt. | |
159 | Note that this includes abnormal exit, e.g. error(). This is | |
160 | necessary to prevent getting into states from which we can't | |
161 | recover. */ | |
162 | static void | |
c5aa993b | 163 | expect_prompt (discard) |
c906108c SS |
164 | int discard; |
165 | { | |
166 | #if defined (LOG_FILE) | |
167 | /* This is a convenient place to do this. The idea is to do it often | |
168 | enough that we never lose much data if we terminate abnormally. */ | |
c5aa993b | 169 | fflush (log_file); |
c906108c SS |
170 | #endif |
171 | expect ("dbug> ", discard); | |
172 | } | |
173 | ||
174 | /* Get a hex digit from the remote system & return its value. | |
175 | If ignore_space is nonzero, ignore spaces (not newline, tab, etc). */ | |
176 | static int | |
c5aa993b | 177 | get_hex_digit (ignore_space) |
c906108c SS |
178 | int ignore_space; |
179 | { | |
180 | int ch; | |
181 | while (1) | |
182 | { | |
c5aa993b | 183 | ch = readchar (timeout); |
c906108c SS |
184 | if (ch >= '0' && ch <= '9') |
185 | return ch - '0'; | |
186 | else if (ch >= 'A' && ch <= 'F') | |
187 | return ch - 'A' + 10; | |
188 | else if (ch >= 'a' && ch <= 'f') | |
189 | return ch - 'a' + 10; | |
190 | else if (ch == ' ' && ignore_space) | |
191 | ; | |
192 | else | |
193 | { | |
c5aa993b JM |
194 | expect_prompt (1); |
195 | error ("Invalid hex digit from remote system."); | |
c906108c SS |
196 | } |
197 | } | |
198 | } | |
199 | ||
200 | /* Get a byte from stdebug and put it in *BYT. Accept any number | |
201 | leading spaces. */ | |
202 | static void | |
203 | get_hex_byte (byt) | |
204 | char *byt; | |
205 | { | |
206 | int val; | |
207 | ||
208 | val = get_hex_digit (1) << 4; | |
209 | val |= get_hex_digit (0); | |
210 | *byt = val; | |
211 | } | |
212 | ||
213 | /* Get N 32-bit words from remote, each preceded by a space, | |
214 | and put them in registers starting at REGNO. */ | |
215 | static void | |
216 | get_hex_regs (n, regno) | |
217 | int n; | |
218 | int regno; | |
219 | { | |
220 | long val; | |
221 | int i; | |
222 | ||
223 | for (i = 0; i < n; i++) | |
224 | { | |
225 | int j; | |
c5aa993b | 226 | |
c906108c SS |
227 | val = 0; |
228 | for (j = 0; j < 8; j++) | |
229 | val = (val << 4) + get_hex_digit (j == 0); | |
230 | supply_register (regno++, (char *) &val); | |
231 | } | |
232 | } | |
233 | ||
234 | /* This is called not only when we first attach, but also when the | |
235 | user types "run" after having attached. */ | |
236 | static void | |
237 | st2000_create_inferior (execfile, args, env) | |
238 | char *execfile; | |
239 | char *args; | |
240 | char **env; | |
241 | { | |
242 | int entry_pt; | |
243 | ||
244 | if (args && *args) | |
c5aa993b | 245 | error ("Can't pass arguments to remote STDEBUG process"); |
c906108c SS |
246 | |
247 | if (execfile == 0 || exec_bfd == 0) | |
c5aa993b | 248 | error ("No executable file specified"); |
c906108c SS |
249 | |
250 | entry_pt = (int) bfd_get_start_address (exec_bfd); | |
251 | ||
252 | /* The "process" (board) is already stopped awaiting our commands, and | |
253 | the program is already downloaded. We just set its PC and go. */ | |
254 | ||
255 | clear_proceed_status (); | |
256 | ||
257 | /* Tell wait_for_inferior that we've started a new process. */ | |
258 | init_wait_for_inferior (); | |
259 | ||
260 | /* Set up the "saved terminal modes" of the inferior | |
261 | based on what modes we are starting it with. */ | |
262 | target_terminal_init (); | |
263 | ||
264 | /* Install inferior's terminal modes. */ | |
265 | target_terminal_inferior (); | |
266 | ||
267 | /* insert_step_breakpoint (); FIXME, do we need this? */ | |
268 | /* Let 'er rip... */ | |
c5aa993b | 269 | proceed ((CORE_ADDR) entry_pt, TARGET_SIGNAL_DEFAULT, 0); |
c906108c SS |
270 | } |
271 | ||
272 | /* Open a connection to a remote debugger. | |
273 | NAME is the filename used for communication. */ | |
274 | ||
275 | static int baudrate = 9600; | |
276 | static char dev_name[100]; | |
277 | ||
278 | static void | |
c5aa993b | 279 | st2000_open (args, from_tty) |
c906108c SS |
280 | char *args; |
281 | int from_tty; | |
282 | { | |
283 | int n; | |
284 | char junk[100]; | |
285 | ||
c5aa993b JM |
286 | target_preopen (from_tty); |
287 | ||
288 | n = sscanf (args, " %s %d %s", dev_name, &baudrate, junk); | |
c906108c SS |
289 | |
290 | if (n != 2) | |
c5aa993b | 291 | error ("Bad arguments. Usage: target st2000 <device> <speed>\n\ |
c906108c SS |
292 | or target st2000 <host> <port>\n"); |
293 | ||
c5aa993b | 294 | st2000_close (0); |
c906108c | 295 | |
c5aa993b | 296 | st2000_desc = SERIAL_OPEN (dev_name); |
c906108c SS |
297 | |
298 | if (!st2000_desc) | |
c5aa993b | 299 | perror_with_name (dev_name); |
c906108c | 300 | |
c5aa993b | 301 | SERIAL_SETBAUDRATE (st2000_desc, baudrate); |
c906108c | 302 | |
c5aa993b | 303 | SERIAL_RAW (st2000_desc); |
c906108c | 304 | |
c5aa993b | 305 | push_target (&st2000_ops); |
c906108c SS |
306 | |
307 | #if defined (LOG_FILE) | |
308 | log_file = fopen (LOG_FILE, "w"); | |
309 | if (log_file == NULL) | |
310 | perror_with_name (LOG_FILE); | |
311 | #endif | |
312 | ||
313 | /* Hello? Are you there? */ | |
c5aa993b JM |
314 | printf_stdebug ("\003"); /* ^C wakes up dbug */ |
315 | ||
316 | expect_prompt (1); | |
c906108c SS |
317 | |
318 | if (from_tty) | |
c5aa993b JM |
319 | printf ("Remote %s connected to %s\n", target_shortname, |
320 | dev_name); | |
c906108c SS |
321 | } |
322 | ||
323 | /* Close out all files and local state before this target loses control. */ | |
324 | ||
325 | static void | |
326 | st2000_close (quitting) | |
327 | int quitting; | |
328 | { | |
c5aa993b | 329 | SERIAL_CLOSE (st2000_desc); |
c906108c SS |
330 | |
331 | #if defined (LOG_FILE) | |
c5aa993b JM |
332 | if (log_file) |
333 | { | |
334 | if (ferror (log_file)) | |
335 | fprintf (stderr, "Error writing log file.\n"); | |
336 | if (fclose (log_file) != 0) | |
337 | fprintf (stderr, "Error closing log file.\n"); | |
338 | } | |
c906108c SS |
339 | #endif |
340 | } | |
341 | ||
342 | /* Terminate the open connection to the remote debugger. | |
343 | Use this when you want to detach and do something else | |
344 | with your gdb. */ | |
345 | static void | |
346 | st2000_detach (from_tty) | |
347 | int from_tty; | |
348 | { | |
c5aa993b | 349 | pop_target (); /* calls st2000_close to do the real work */ |
c906108c SS |
350 | if (from_tty) |
351 | printf ("Ending remote %s debugging\n", target_shortname); | |
352 | } | |
c5aa993b | 353 | |
c906108c SS |
354 | /* Tell the remote machine to resume. */ |
355 | ||
356 | static void | |
357 | st2000_resume (pid, step, sig) | |
358 | int pid, step; | |
359 | enum target_signal sig; | |
360 | { | |
361 | if (step) | |
362 | { | |
363 | printf_stdebug ("ST\r"); | |
364 | /* Wait for the echo. */ | |
365 | expect ("ST\r", 1); | |
366 | } | |
367 | else | |
368 | { | |
369 | printf_stdebug ("GO\r"); | |
370 | /* Swallow the echo. */ | |
371 | expect ("GO\r", 1); | |
372 | } | |
373 | } | |
374 | ||
375 | /* Wait until the remote machine stops, then return, | |
376 | storing status in STATUS just as `wait' would. */ | |
377 | ||
378 | static int | |
379 | st2000_wait (status) | |
380 | struct target_waitstatus *status; | |
381 | { | |
382 | int old_timeout = timeout; | |
383 | ||
384 | status->kind = TARGET_WAITKIND_EXITED; | |
385 | status->value.integer = 0; | |
386 | ||
c5aa993b | 387 | timeout = 0; /* Don't time out -- user program is running. */ |
c906108c | 388 | |
c5aa993b | 389 | expect_prompt (0); /* Wait for prompt, outputting extraneous text */ |
c906108c SS |
390 | |
391 | status->kind = TARGET_WAITKIND_STOPPED; | |
392 | status->value.sig = TARGET_SIGNAL_TRAP; | |
393 | ||
394 | timeout = old_timeout; | |
395 | ||
396 | return 0; | |
397 | } | |
398 | ||
399 | /* Return the name of register number REGNO in the form input and output by | |
400 | STDEBUG. Currently, REGISTER_NAMES just happens to contain exactly what | |
401 | STDEBUG wants. Lets take advantage of that just as long as possible! */ | |
402 | ||
403 | static char * | |
404 | get_reg_name (regno) | |
405 | int regno; | |
406 | { | |
407 | static char buf[50]; | |
408 | const char *p; | |
409 | char *b; | |
410 | ||
411 | b = buf; | |
412 | ||
413 | for (p = REGISTER_NAME (regno); *p; p++) | |
c5aa993b | 414 | *b++ = toupper (*p); |
c906108c SS |
415 | *b = '\000'; |
416 | ||
417 | return buf; | |
418 | } | |
419 | ||
420 | /* Read the remote registers into the block REGS. */ | |
421 | ||
422 | static void | |
423 | st2000_fetch_registers () | |
424 | { | |
425 | int regno; | |
426 | ||
427 | /* Yeah yeah, I know this is horribly inefficient. But it isn't done | |
428 | very often... I'll clean it up later. */ | |
429 | ||
430 | for (regno = 0; regno <= PC_REGNUM; regno++) | |
c5aa993b | 431 | st2000_fetch_register (regno); |
c906108c SS |
432 | } |
433 | ||
434 | /* Fetch register REGNO, or all registers if REGNO is -1. | |
435 | Returns errno value. */ | |
436 | static void | |
437 | st2000_fetch_register (regno) | |
438 | int regno; | |
439 | { | |
440 | if (regno == -1) | |
441 | st2000_fetch_registers (); | |
442 | else | |
443 | { | |
444 | char *name = get_reg_name (regno); | |
445 | printf_stdebug ("DR %s\r", name); | |
446 | expect (name, 1); | |
447 | expect (" : ", 1); | |
448 | get_hex_regs (1, regno); | |
449 | expect_prompt (1); | |
450 | } | |
451 | return; | |
452 | } | |
453 | ||
454 | /* Store the remote registers from the contents of the block REGS. */ | |
455 | ||
456 | static void | |
457 | st2000_store_registers () | |
458 | { | |
459 | int regno; | |
460 | ||
461 | for (regno = 0; regno <= PC_REGNUM; regno++) | |
c5aa993b | 462 | st2000_store_register (regno); |
c906108c SS |
463 | |
464 | registers_changed (); | |
465 | } | |
466 | ||
467 | /* Store register REGNO, or all if REGNO == 0. | |
468 | Return errno value. */ | |
469 | static void | |
470 | st2000_store_register (regno) | |
471 | int regno; | |
472 | { | |
473 | if (regno == -1) | |
474 | st2000_store_registers (); | |
475 | else | |
476 | { | |
477 | printf_stdebug ("PR %s %x\r", get_reg_name (regno), | |
478 | read_register (regno)); | |
479 | ||
480 | expect_prompt (1); | |
481 | } | |
482 | } | |
483 | ||
484 | /* Get ready to modify the registers array. On machines which store | |
485 | individual registers, this doesn't need to do anything. On machines | |
486 | which store all the registers in one fell swoop, this makes sure | |
487 | that registers contains all the registers from the program being | |
488 | debugged. */ | |
489 | ||
490 | static void | |
491 | st2000_prepare_to_store () | |
492 | { | |
493 | /* Do nothing, since we can store individual regs */ | |
494 | } | |
495 | ||
496 | static void | |
497 | st2000_files_info () | |
498 | { | |
499 | printf ("\tAttached to %s at %d baud.\n", | |
500 | dev_name, baudrate); | |
501 | } | |
502 | ||
503 | /* Copy LEN bytes of data from debugger memory at MYADDR | |
504 | to inferior's memory at MEMADDR. Returns length moved. */ | |
505 | static int | |
506 | st2000_write_inferior_memory (memaddr, myaddr, len) | |
507 | CORE_ADDR memaddr; | |
508 | unsigned char *myaddr; | |
509 | int len; | |
510 | { | |
511 | int i; | |
512 | ||
513 | for (i = 0; i < len; i++) | |
514 | { | |
515 | printf_stdebug ("PM.B %x %x\r", memaddr + i, myaddr[i]); | |
516 | expect_prompt (1); | |
517 | } | |
518 | return len; | |
519 | } | |
520 | ||
521 | /* Read LEN bytes from inferior memory at MEMADDR. Put the result | |
522 | at debugger address MYADDR. Returns length moved. */ | |
523 | static int | |
c5aa993b | 524 | st2000_read_inferior_memory (memaddr, myaddr, len) |
c906108c SS |
525 | CORE_ADDR memaddr; |
526 | char *myaddr; | |
527 | int len; | |
528 | { | |
529 | int i; | |
530 | ||
531 | /* Number of bytes read so far. */ | |
532 | int count; | |
533 | ||
534 | /* Starting address of this pass. */ | |
535 | unsigned long startaddr; | |
536 | ||
537 | /* Number of bytes to read in this pass. */ | |
538 | int len_this_pass; | |
539 | ||
540 | /* Note that this code works correctly if startaddr is just less | |
541 | than UINT_MAX (well, really CORE_ADDR_MAX if there was such a | |
542 | thing). That is, something like | |
543 | st2000_read_bytes (CORE_ADDR_MAX - 4, foo, 4) | |
544 | works--it never adds len to memaddr and gets 0. */ | |
545 | /* However, something like | |
546 | st2000_read_bytes (CORE_ADDR_MAX - 3, foo, 4) | |
547 | doesn't need to work. Detect it and give up if there's an attempt | |
548 | to do that. */ | |
c5aa993b JM |
549 | if (((memaddr - 1) + len) < memaddr) |
550 | { | |
551 | errno = EIO; | |
552 | return 0; | |
553 | } | |
554 | ||
c906108c SS |
555 | startaddr = memaddr; |
556 | count = 0; | |
557 | while (count < len) | |
558 | { | |
559 | len_this_pass = 16; | |
560 | if ((startaddr % 16) != 0) | |
561 | len_this_pass -= startaddr % 16; | |
562 | if (len_this_pass > (len - count)) | |
563 | len_this_pass = (len - count); | |
564 | ||
565 | printf_stdebug ("DI.L %x %x\r", startaddr, len_this_pass); | |
566 | expect (": ", 1); | |
567 | ||
568 | for (i = 0; i < len_this_pass; i++) | |
569 | get_hex_byte (&myaddr[count++]); | |
570 | ||
571 | expect_prompt (1); | |
572 | ||
573 | startaddr += len_this_pass; | |
574 | } | |
575 | return len; | |
576 | } | |
577 | ||
578 | /* FIXME-someday! Merge these two. */ | |
579 | static int | |
580 | st2000_xfer_inferior_memory (memaddr, myaddr, len, write, target) | |
581 | CORE_ADDR memaddr; | |
582 | char *myaddr; | |
583 | int len; | |
584 | int write; | |
c5aa993b | 585 | struct target_ops *target; /* ignored */ |
c906108c SS |
586 | { |
587 | if (write) | |
588 | return st2000_write_inferior_memory (memaddr, myaddr, len); | |
589 | else | |
590 | return st2000_read_inferior_memory (memaddr, myaddr, len); | |
591 | } | |
592 | ||
593 | static void | |
594 | st2000_kill (args, from_tty) | |
595 | char *args; | |
596 | int from_tty; | |
597 | { | |
c5aa993b | 598 | return; /* Ignore attempts to kill target system */ |
c906108c SS |
599 | } |
600 | ||
601 | /* Clean up when a program exits. | |
602 | ||
603 | The program actually lives on in the remote processor's RAM, and may be | |
604 | run again without a download. Don't leave it full of breakpoint | |
605 | instructions. */ | |
606 | ||
607 | static void | |
608 | st2000_mourn_inferior () | |
609 | { | |
610 | remove_breakpoints (); | |
611 | unpush_target (&st2000_ops); | |
612 | generic_mourn_inferior (); /* Do all the proper things now */ | |
613 | } | |
614 | ||
615 | #define MAX_STDEBUG_BREAKPOINTS 16 | |
616 | ||
c5aa993b JM |
617 | static CORE_ADDR breakaddr[MAX_STDEBUG_BREAKPOINTS] = |
618 | {0}; | |
c906108c SS |
619 | |
620 | static int | |
621 | st2000_insert_breakpoint (addr, shadow) | |
622 | CORE_ADDR addr; | |
623 | char *shadow; | |
624 | { | |
625 | int i; | |
626 | CORE_ADDR bp_addr = addr; | |
627 | int bp_size = 0; | |
628 | ||
629 | BREAKPOINT_FROM_PC (&bp_addr, &bp_size); | |
630 | ||
631 | for (i = 0; i <= MAX_STDEBUG_BREAKPOINTS; i++) | |
632 | if (breakaddr[i] == 0) | |
633 | { | |
634 | breakaddr[i] = addr; | |
635 | ||
636 | st2000_read_inferior_memory (bp_addr, shadow, bp_size); | |
c5aa993b JM |
637 | printf_stdebug ("BR %x H\r", addr); |
638 | expect_prompt (1); | |
c906108c SS |
639 | return 0; |
640 | } | |
641 | ||
c5aa993b | 642 | fprintf (stderr, "Too many breakpoints (> 16) for STDBUG\n"); |
c906108c SS |
643 | return 1; |
644 | } | |
645 | ||
646 | static int | |
647 | st2000_remove_breakpoint (addr, shadow) | |
648 | CORE_ADDR addr; | |
649 | char *shadow; | |
650 | { | |
651 | int i; | |
652 | ||
653 | for (i = 0; i < MAX_STDEBUG_BREAKPOINTS; i++) | |
654 | if (breakaddr[i] == addr) | |
655 | { | |
656 | breakaddr[i] = 0; | |
657 | ||
c5aa993b JM |
658 | printf_stdebug ("CB %d\r", i); |
659 | expect_prompt (1); | |
c906108c SS |
660 | return 0; |
661 | } | |
662 | ||
c5aa993b | 663 | fprintf (stderr, "Can't find breakpoint associated with 0x%x\n", addr); |
c906108c SS |
664 | return 1; |
665 | } | |
666 | ||
667 | ||
668 | /* Put a command string, in args, out to STDBUG. Output from STDBUG is placed | |
669 | on the users terminal until the prompt is seen. */ | |
670 | ||
671 | static void | |
672 | st2000_command (args, fromtty) | |
c5aa993b JM |
673 | char *args; |
674 | int fromtty; | |
c906108c SS |
675 | { |
676 | if (!st2000_desc) | |
c5aa993b JM |
677 | error ("st2000 target not open."); |
678 | ||
c906108c | 679 | if (!args) |
c5aa993b JM |
680 | error ("Missing command."); |
681 | ||
682 | printf_stdebug ("%s\r", args); | |
683 | expect_prompt (0); | |
c906108c SS |
684 | } |
685 | ||
686 | /* Connect the user directly to STDBUG. This command acts just like the | |
687 | 'cu' or 'tip' command. Use <CR>~. or <CR>~^D to break out. */ | |
688 | ||
c5aa993b | 689 | /*static struct ttystate ttystate; */ |
c906108c SS |
690 | |
691 | static void | |
c5aa993b | 692 | cleanup_tty () |
c906108c | 693 | { |
c5aa993b JM |
694 | printf ("\r\n[Exiting connect mode]\r\n"); |
695 | /* SERIAL_RESTORE(0, &ttystate); */ | |
c906108c SS |
696 | } |
697 | ||
698 | #if 0 | |
699 | /* This all should now be in serial.c */ | |
700 | ||
701 | static void | |
702 | connect_command (args, fromtty) | |
c5aa993b JM |
703 | char *args; |
704 | int fromtty; | |
c906108c SS |
705 | { |
706 | fd_set readfds; | |
707 | int numfds; | |
708 | int c; | |
709 | char cur_esc = 0; | |
710 | ||
c5aa993b | 711 | dont_repeat (); |
c906108c SS |
712 | |
713 | if (st2000_desc < 0) | |
c5aa993b JM |
714 | error ("st2000 target not open."); |
715 | ||
c906108c | 716 | if (args) |
c5aa993b | 717 | fprintf ("This command takes no args. They have been ignored.\n"); |
c906108c | 718 | |
c5aa993b | 719 | printf ("[Entering connect mode. Use ~. or ~^D to escape]\n"); |
c906108c | 720 | |
c5aa993b | 721 | serial_raw (0, &ttystate); |
c906108c | 722 | |
c5aa993b JM |
723 | make_cleanup (cleanup_tty, 0); |
724 | ||
725 | FD_ZERO (&readfds); | |
c906108c SS |
726 | |
727 | while (1) | |
728 | { | |
729 | do | |
730 | { | |
c5aa993b | 731 | FD_SET (0, &readfds); |
c2c6d25f | 732 | FD_SET (DEPRECATED_SERIAL_FD (st2000_desc), &readfds); |
c5aa993b | 733 | numfds = select (sizeof (readfds) * 8, &readfds, 0, 0, 0); |
c906108c SS |
734 | } |
735 | while (numfds == 0); | |
736 | ||
737 | if (numfds < 0) | |
c5aa993b | 738 | perror_with_name ("select"); |
c906108c | 739 | |
c5aa993b | 740 | if (FD_ISSET (0, &readfds)) |
c906108c | 741 | { /* tty input, send to stdebug */ |
c5aa993b | 742 | c = getchar (); |
c906108c | 743 | if (c < 0) |
c5aa993b | 744 | perror_with_name ("connect"); |
c906108c | 745 | |
c5aa993b | 746 | printf_stdebug ("%c", c); |
c906108c SS |
747 | switch (cur_esc) |
748 | { | |
749 | case 0: | |
750 | if (c == '\r') | |
751 | cur_esc = c; | |
752 | break; | |
753 | case '\r': | |
754 | if (c == '~') | |
755 | cur_esc = c; | |
756 | else | |
757 | cur_esc = 0; | |
758 | break; | |
759 | case '~': | |
760 | if (c == '.' || c == '\004') | |
761 | return; | |
762 | else | |
763 | cur_esc = 0; | |
764 | } | |
765 | } | |
766 | ||
c2c6d25f | 767 | if (FD_ISSET (DEPRECATED_SERIAL_FD (st2000_desc), &readfds)) |
c906108c SS |
768 | { |
769 | while (1) | |
770 | { | |
c5aa993b | 771 | c = readchar (0); |
c906108c SS |
772 | if (c < 0) |
773 | break; | |
c5aa993b | 774 | putchar (c); |
c906108c | 775 | } |
c5aa993b | 776 | fflush (stdout); |
c906108c SS |
777 | } |
778 | } | |
779 | } | |
780 | #endif /* 0 */ | |
781 | ||
782 | /* Define the target subroutine names */ | |
783 | ||
c5aa993b | 784 | struct target_ops st2000_ops; |
c906108c | 785 | |
c5aa993b JM |
786 | static void |
787 | init_st2000_ops (void) | |
c906108c | 788 | { |
c5aa993b JM |
789 | st2000_ops.to_shortname = "st2000"; |
790 | st2000_ops.to_longname = "Remote serial Tandem ST2000 target"; | |
791 | st2000_ops.to_doc = "Use a remote computer running STDEBUG connected by a serial line;\n\ | |
c906108c SS |
792 | or a network connection.\n\ |
793 | Arguments are the name of the device for the serial line,\n\ | |
c5aa993b JM |
794 | the speed to connect at in bits per second."; |
795 | st2000_ops.to_open = st2000_open; | |
796 | st2000_ops.to_close = st2000_close; | |
797 | st2000_ops.to_attach = 0; | |
c906108c SS |
798 | st2000_run_ops.to_post_attach = NULL; |
799 | st2000_ops.to_require_attach = NULL; | |
c5aa993b | 800 | st2000_ops.to_detach = st2000_detach; |
c906108c | 801 | st2000_ops.to_require_detach = NULL; |
c5aa993b JM |
802 | st2000_ops.to_resume = st2000_resume; |
803 | st2000_ops.to_wait = st2000_wait; | |
c906108c | 804 | st2000_ops.to_post_wait = NULL; |
c5aa993b JM |
805 | st2000_ops.to_fetch_registers = st2000_fetch_register; |
806 | st2000_ops.to_store_registers = st2000_store_register; | |
807 | st2000_ops.to_prepare_to_store = st2000_prepare_to_store; | |
808 | st2000_ops.to_xfer_memory = st2000_xfer_inferior_memory; | |
809 | st2000_ops.to_files_info = st2000_files_info; | |
810 | st2000_ops.to_insert_breakpoint = st2000_insert_breakpoint; | |
811 | st2000_ops.to_remove_breakpoint = st2000_remove_breakpoint; /* Breakpoints */ | |
812 | st2000_ops.to_terminal_init = 0; | |
813 | st2000_ops.to_terminal_inferior = 0; | |
814 | st2000_ops.to_terminal_ours_for_output = 0; | |
815 | st2000_ops.to_terminal_ours = 0; | |
816 | st2000_ops.to_terminal_info = 0; /* Terminal handling */ | |
817 | st2000_ops.to_kill = st2000_kill; | |
818 | st2000_ops.to_load = 0; /* load */ | |
819 | st2000_ops.to_lookup_symbol = 0; /* lookup_symbol */ | |
820 | st2000_ops.to_create_inferior = st2000_create_inferior; | |
c906108c SS |
821 | st2000_ops.to_post_startup_inferior = NULL; |
822 | st2000_ops.to_acknowledge_created_inferior = NULL; | |
823 | st2000_ops.to_clone_and_follow_inferior = NULL; | |
824 | st2000_ops.to_post_follow_inferior_by_clone = NULL; | |
825 | st2000_run_ops.to_insert_fork_catchpoint = NULL; | |
826 | st2000_run_ops.to_remove_fork_catchpoint = NULL; | |
827 | st2000_run_ops.to_insert_vfork_catchpoint = NULL; | |
828 | st2000_run_ops.to_remove_vfork_catchpoint = NULL; | |
829 | st2000_ops.to_has_forked = NULL; | |
830 | st2000_ops.to_has_vforked = NULL; | |
831 | st2000_run_ops.to_can_follow_vfork_prior_to_exec = NULL; | |
832 | st2000_ops.to_post_follow_vfork = NULL; | |
833 | st2000_run_ops.to_insert_exec_catchpoint = NULL; | |
834 | st2000_run_ops.to_remove_exec_catchpoint = NULL; | |
835 | st2000_run_ops.to_has_execd = NULL; | |
836 | st2000_run_ops.to_reported_exec_events_per_exec_call = NULL; | |
837 | st2000_run_ops.to_has_exited = NULL; | |
c5aa993b JM |
838 | st2000_ops.to_mourn_inferior = st2000_mourn_inferior; |
839 | st2000_ops.to_can_run = 0; /* can_run */ | |
840 | st2000_ops.to_notice_signals = 0; /* notice_signals */ | |
841 | st2000_ops.to_thread_alive = 0; /* thread alive */ | |
842 | st2000_ops.to_stop = 0; /* to_stop */ | |
c906108c SS |
843 | st2000_ops.to_pid_to_exec_file = NULL; |
844 | st2000_run_ops.to_core_file_to_sym_file = NULL; | |
c5aa993b JM |
845 | st2000_ops.to_stratum = process_stratum; |
846 | st2000_ops.DONT_USE = 0; /* next */ | |
847 | st2000_ops.to_has_all_memory = 1; | |
848 | st2000_ops.to_has_memory = 1; | |
849 | st2000_ops.to_has_stack = 1; | |
850 | st2000_ops.to_has_registers = 1; | |
851 | st2000_ops.to_has_execution = 1; /* all mem, mem, stack, regs, exec */ | |
852 | st2000_ops.to_sections = 0; | |
853 | st2000_ops.to_sections_end = 0; /* Section pointers */ | |
854 | st2000_ops.to_magic = OPS_MAGIC; /* Always the last thing */ | |
855 | }; | |
c906108c SS |
856 | |
857 | void | |
858 | _initialize_remote_st2000 () | |
859 | { | |
c5aa993b | 860 | init_st2000_ops (); |
c906108c SS |
861 | add_target (&st2000_ops); |
862 | add_com ("st2000 <command>", class_obscure, st2000_command, | |
863 | "Send a command to the STDBUG monitor."); | |
864 | add_com ("connect", class_obscure, connect_command, | |
865 | "Connect the terminal directly up to the STDBUG command monitor.\n\ | |
866 | Use <CR>~. or <CR>~^D to break out."); | |
867 | } |