Commit | Line | Data |
---|---|---|
c906108c | 1 | /* Remote debugging interface for Tandem ST2000 phone switch, for GDB. |
29e57380 | 2 | Copyright 1990, 1991, 1992, 2001 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" | |
43ff13b4 | 41 | #include "gdb_string.h" |
9846de1b | 42 | #include <sys/types.h> |
c906108c | 43 | #include "serial.h" |
4e052eda | 44 | #include "regcache.h" |
c906108c | 45 | |
c5aa993b | 46 | extern struct target_ops st2000_ops; /* Forward declaration */ |
c906108c | 47 | |
c5aa993b JM |
48 | static void st2000_close (); |
49 | static void st2000_fetch_register (); | |
50 | static void st2000_store_register (); | |
c906108c SS |
51 | |
52 | #define LOG_FILE "st2000.log" | |
53 | #if defined (LOG_FILE) | |
54 | FILE *log_file; | |
55 | #endif | |
56 | ||
57 | static int timeout = 24; | |
58 | ||
59 | /* Descriptor for I/O to remote machine. Initialize it to -1 so that | |
60 | st2000_open knows that we don't have a file open when the program | |
61 | starts. */ | |
62 | ||
63 | static serial_t st2000_desc; | |
64 | ||
65 | /* Send data to stdebug. Works just like printf. */ | |
66 | ||
67 | static void | |
c5aa993b | 68 | printf_stdebug (char *pattern,...) |
c906108c SS |
69 | { |
70 | va_list args; | |
71 | char buf[200]; | |
72 | ||
c5aa993b | 73 | va_start (args, pattern); |
c906108c | 74 | |
c5aa993b JM |
75 | vsprintf (buf, pattern, args); |
76 | va_end (args); | |
c906108c | 77 | |
c5aa993b JM |
78 | if (SERIAL_WRITE (st2000_desc, buf, strlen (buf))) |
79 | fprintf (stderr, "SERIAL_WRITE failed: %s\n", safe_strerror (errno)); | |
c906108c SS |
80 | } |
81 | ||
82 | /* Read a character from the remote system, doing all the fancy timeout | |
83 | stuff. */ | |
84 | ||
85 | static int | |
fba45db2 | 86 | readchar (int timeout) |
c906108c SS |
87 | { |
88 | int c; | |
89 | ||
c5aa993b | 90 | c = SERIAL_READCHAR (st2000_desc, timeout); |
c906108c SS |
91 | |
92 | #ifdef LOG_FILE | |
c5aa993b | 93 | putc (c & 0x7f, log_file); |
c906108c SS |
94 | #endif |
95 | ||
96 | if (c >= 0) | |
97 | return c & 0x7f; | |
98 | ||
99 | if (c == SERIAL_TIMEOUT) | |
100 | { | |
101 | if (timeout == 0) | |
102 | return c; /* Polls shouldn't generate timeout errors */ | |
103 | ||
c5aa993b | 104 | error ("Timeout reading from remote system."); |
c906108c SS |
105 | } |
106 | ||
c5aa993b | 107 | perror_with_name ("remote-st2000"); |
c906108c SS |
108 | } |
109 | ||
110 | /* Scan input from the remote system, until STRING is found. If DISCARD is | |
111 | non-zero, then discard non-matching input, else print it out. | |
112 | Let the user break out immediately. */ | |
113 | static void | |
fba45db2 | 114 | expect (char *string, int discard) |
c906108c SS |
115 | { |
116 | char *p = string; | |
117 | int c; | |
118 | ||
8edbea78 | 119 | immediate_quit++; |
c906108c SS |
120 | while (1) |
121 | { | |
c5aa993b | 122 | c = readchar (timeout); |
c906108c SS |
123 | if (c == *p++) |
124 | { | |
125 | if (*p == '\0') | |
126 | { | |
8edbea78 | 127 | immediate_quit--; |
c906108c SS |
128 | return; |
129 | } | |
130 | } | |
131 | else | |
132 | { | |
133 | if (!discard) | |
134 | { | |
c5aa993b JM |
135 | fwrite (string, 1, (p - 1) - string, stdout); |
136 | putchar ((char) c); | |
137 | fflush (stdout); | |
c906108c SS |
138 | } |
139 | p = string; | |
140 | } | |
141 | } | |
142 | } | |
143 | ||
144 | /* Keep discarding input until we see the STDEBUG prompt. | |
145 | ||
146 | The convention for dealing with the prompt is that you | |
147 | o give your command | |
148 | o *then* wait for the prompt. | |
149 | ||
150 | Thus the last thing that a procedure does with the serial line | |
151 | will be an expect_prompt(). Exception: st2000_resume does not | |
152 | wait for the prompt, because the terminal is being handed over | |
153 | to the inferior. However, the next thing which happens after that | |
154 | is a st2000_wait which does wait for the prompt. | |
155 | Note that this includes abnormal exit, e.g. error(). This is | |
156 | necessary to prevent getting into states from which we can't | |
157 | recover. */ | |
158 | static void | |
fba45db2 | 159 | expect_prompt (int discard) |
c906108c SS |
160 | { |
161 | #if defined (LOG_FILE) | |
162 | /* This is a convenient place to do this. The idea is to do it often | |
163 | enough that we never lose much data if we terminate abnormally. */ | |
c5aa993b | 164 | fflush (log_file); |
c906108c SS |
165 | #endif |
166 | expect ("dbug> ", discard); | |
167 | } | |
168 | ||
169 | /* Get a hex digit from the remote system & return its value. | |
170 | If ignore_space is nonzero, ignore spaces (not newline, tab, etc). */ | |
171 | static int | |
fba45db2 | 172 | get_hex_digit (int ignore_space) |
c906108c SS |
173 | { |
174 | int ch; | |
175 | while (1) | |
176 | { | |
c5aa993b | 177 | ch = readchar (timeout); |
c906108c SS |
178 | if (ch >= '0' && ch <= '9') |
179 | return ch - '0'; | |
180 | else if (ch >= 'A' && ch <= 'F') | |
181 | return ch - 'A' + 10; | |
182 | else if (ch >= 'a' && ch <= 'f') | |
183 | return ch - 'a' + 10; | |
184 | else if (ch == ' ' && ignore_space) | |
185 | ; | |
186 | else | |
187 | { | |
c5aa993b JM |
188 | expect_prompt (1); |
189 | error ("Invalid hex digit from remote system."); | |
c906108c SS |
190 | } |
191 | } | |
192 | } | |
193 | ||
194 | /* Get a byte from stdebug and put it in *BYT. Accept any number | |
195 | leading spaces. */ | |
196 | static void | |
fba45db2 | 197 | get_hex_byte (char *byt) |
c906108c SS |
198 | { |
199 | int val; | |
200 | ||
201 | val = get_hex_digit (1) << 4; | |
202 | val |= get_hex_digit (0); | |
203 | *byt = val; | |
204 | } | |
205 | ||
206 | /* Get N 32-bit words from remote, each preceded by a space, | |
207 | and put them in registers starting at REGNO. */ | |
208 | static void | |
fba45db2 | 209 | get_hex_regs (int n, int regno) |
c906108c SS |
210 | { |
211 | long val; | |
212 | int i; | |
213 | ||
214 | for (i = 0; i < n; i++) | |
215 | { | |
216 | int j; | |
c5aa993b | 217 | |
c906108c SS |
218 | val = 0; |
219 | for (j = 0; j < 8; j++) | |
220 | val = (val << 4) + get_hex_digit (j == 0); | |
221 | supply_register (regno++, (char *) &val); | |
222 | } | |
223 | } | |
224 | ||
225 | /* This is called not only when we first attach, but also when the | |
226 | user types "run" after having attached. */ | |
227 | static void | |
fba45db2 | 228 | st2000_create_inferior (char *execfile, char *args, char **env) |
c906108c SS |
229 | { |
230 | int entry_pt; | |
231 | ||
232 | if (args && *args) | |
c5aa993b | 233 | error ("Can't pass arguments to remote STDEBUG process"); |
c906108c SS |
234 | |
235 | if (execfile == 0 || exec_bfd == 0) | |
c5aa993b | 236 | error ("No executable file specified"); |
c906108c SS |
237 | |
238 | entry_pt = (int) bfd_get_start_address (exec_bfd); | |
239 | ||
240 | /* The "process" (board) is already stopped awaiting our commands, and | |
241 | the program is already downloaded. We just set its PC and go. */ | |
242 | ||
243 | clear_proceed_status (); | |
244 | ||
245 | /* Tell wait_for_inferior that we've started a new process. */ | |
246 | init_wait_for_inferior (); | |
247 | ||
248 | /* Set up the "saved terminal modes" of the inferior | |
249 | based on what modes we are starting it with. */ | |
250 | target_terminal_init (); | |
251 | ||
252 | /* Install inferior's terminal modes. */ | |
253 | target_terminal_inferior (); | |
254 | ||
255 | /* insert_step_breakpoint (); FIXME, do we need this? */ | |
256 | /* Let 'er rip... */ | |
c5aa993b | 257 | proceed ((CORE_ADDR) entry_pt, TARGET_SIGNAL_DEFAULT, 0); |
c906108c SS |
258 | } |
259 | ||
260 | /* Open a connection to a remote debugger. | |
261 | NAME is the filename used for communication. */ | |
262 | ||
263 | static int baudrate = 9600; | |
264 | static char dev_name[100]; | |
265 | ||
266 | static void | |
fba45db2 | 267 | st2000_open (char *args, int from_tty) |
c906108c SS |
268 | { |
269 | int n; | |
270 | char junk[100]; | |
271 | ||
c5aa993b JM |
272 | target_preopen (from_tty); |
273 | ||
274 | n = sscanf (args, " %s %d %s", dev_name, &baudrate, junk); | |
c906108c SS |
275 | |
276 | if (n != 2) | |
c5aa993b | 277 | error ("Bad arguments. Usage: target st2000 <device> <speed>\n\ |
c906108c SS |
278 | or target st2000 <host> <port>\n"); |
279 | ||
c5aa993b | 280 | st2000_close (0); |
c906108c | 281 | |
c5aa993b | 282 | st2000_desc = SERIAL_OPEN (dev_name); |
c906108c SS |
283 | |
284 | if (!st2000_desc) | |
c5aa993b | 285 | perror_with_name (dev_name); |
c906108c | 286 | |
c5aa993b | 287 | SERIAL_SETBAUDRATE (st2000_desc, baudrate); |
c906108c | 288 | |
c5aa993b | 289 | SERIAL_RAW (st2000_desc); |
c906108c | 290 | |
c5aa993b | 291 | push_target (&st2000_ops); |
c906108c SS |
292 | |
293 | #if defined (LOG_FILE) | |
294 | log_file = fopen (LOG_FILE, "w"); | |
295 | if (log_file == NULL) | |
296 | perror_with_name (LOG_FILE); | |
297 | #endif | |
298 | ||
299 | /* Hello? Are you there? */ | |
c5aa993b JM |
300 | printf_stdebug ("\003"); /* ^C wakes up dbug */ |
301 | ||
302 | expect_prompt (1); | |
c906108c SS |
303 | |
304 | if (from_tty) | |
c5aa993b JM |
305 | printf ("Remote %s connected to %s\n", target_shortname, |
306 | dev_name); | |
c906108c SS |
307 | } |
308 | ||
309 | /* Close out all files and local state before this target loses control. */ | |
310 | ||
311 | static void | |
fba45db2 | 312 | st2000_close (int quitting) |
c906108c | 313 | { |
c5aa993b | 314 | SERIAL_CLOSE (st2000_desc); |
c906108c SS |
315 | |
316 | #if defined (LOG_FILE) | |
c5aa993b JM |
317 | if (log_file) |
318 | { | |
319 | if (ferror (log_file)) | |
320 | fprintf (stderr, "Error writing log file.\n"); | |
321 | if (fclose (log_file) != 0) | |
322 | fprintf (stderr, "Error closing log file.\n"); | |
323 | } | |
c906108c SS |
324 | #endif |
325 | } | |
326 | ||
327 | /* Terminate the open connection to the remote debugger. | |
328 | Use this when you want to detach and do something else | |
329 | with your gdb. */ | |
330 | static void | |
fba45db2 | 331 | st2000_detach (int from_tty) |
c906108c | 332 | { |
c5aa993b | 333 | pop_target (); /* calls st2000_close to do the real work */ |
c906108c SS |
334 | if (from_tty) |
335 | printf ("Ending remote %s debugging\n", target_shortname); | |
336 | } | |
c5aa993b | 337 | |
c906108c SS |
338 | /* Tell the remote machine to resume. */ |
339 | ||
340 | static void | |
fba45db2 | 341 | st2000_resume (int pid, int step, enum target_signal sig) |
c906108c SS |
342 | { |
343 | if (step) | |
344 | { | |
345 | printf_stdebug ("ST\r"); | |
346 | /* Wait for the echo. */ | |
347 | expect ("ST\r", 1); | |
348 | } | |
349 | else | |
350 | { | |
351 | printf_stdebug ("GO\r"); | |
352 | /* Swallow the echo. */ | |
353 | expect ("GO\r", 1); | |
354 | } | |
355 | } | |
356 | ||
357 | /* Wait until the remote machine stops, then return, | |
358 | storing status in STATUS just as `wait' would. */ | |
359 | ||
360 | static int | |
fba45db2 | 361 | st2000_wait (struct target_waitstatus *status) |
c906108c SS |
362 | { |
363 | int old_timeout = timeout; | |
364 | ||
365 | status->kind = TARGET_WAITKIND_EXITED; | |
366 | status->value.integer = 0; | |
367 | ||
c5aa993b | 368 | timeout = 0; /* Don't time out -- user program is running. */ |
c906108c | 369 | |
c5aa993b | 370 | expect_prompt (0); /* Wait for prompt, outputting extraneous text */ |
c906108c SS |
371 | |
372 | status->kind = TARGET_WAITKIND_STOPPED; | |
373 | status->value.sig = TARGET_SIGNAL_TRAP; | |
374 | ||
375 | timeout = old_timeout; | |
376 | ||
377 | return 0; | |
378 | } | |
379 | ||
380 | /* Return the name of register number REGNO in the form input and output by | |
381 | STDEBUG. Currently, REGISTER_NAMES just happens to contain exactly what | |
382 | STDEBUG wants. Lets take advantage of that just as long as possible! */ | |
383 | ||
384 | static char * | |
fba45db2 | 385 | get_reg_name (int regno) |
c906108c SS |
386 | { |
387 | static char buf[50]; | |
388 | const char *p; | |
389 | char *b; | |
390 | ||
391 | b = buf; | |
392 | ||
393 | for (p = REGISTER_NAME (regno); *p; p++) | |
c5aa993b | 394 | *b++ = toupper (*p); |
c906108c SS |
395 | *b = '\000'; |
396 | ||
397 | return buf; | |
398 | } | |
399 | ||
400 | /* Read the remote registers into the block REGS. */ | |
401 | ||
402 | static void | |
fba45db2 | 403 | st2000_fetch_registers (void) |
c906108c SS |
404 | { |
405 | int regno; | |
406 | ||
407 | /* Yeah yeah, I know this is horribly inefficient. But it isn't done | |
408 | very often... I'll clean it up later. */ | |
409 | ||
410 | for (regno = 0; regno <= PC_REGNUM; regno++) | |
c5aa993b | 411 | st2000_fetch_register (regno); |
c906108c SS |
412 | } |
413 | ||
414 | /* Fetch register REGNO, or all registers if REGNO is -1. | |
415 | Returns errno value. */ | |
416 | static void | |
fba45db2 | 417 | st2000_fetch_register (int regno) |
c906108c SS |
418 | { |
419 | if (regno == -1) | |
420 | st2000_fetch_registers (); | |
421 | else | |
422 | { | |
423 | char *name = get_reg_name (regno); | |
424 | printf_stdebug ("DR %s\r", name); | |
425 | expect (name, 1); | |
426 | expect (" : ", 1); | |
427 | get_hex_regs (1, regno); | |
428 | expect_prompt (1); | |
429 | } | |
430 | return; | |
431 | } | |
432 | ||
433 | /* Store the remote registers from the contents of the block REGS. */ | |
434 | ||
435 | static void | |
fba45db2 | 436 | st2000_store_registers (void) |
c906108c SS |
437 | { |
438 | int regno; | |
439 | ||
440 | for (regno = 0; regno <= PC_REGNUM; regno++) | |
c5aa993b | 441 | st2000_store_register (regno); |
c906108c SS |
442 | |
443 | registers_changed (); | |
444 | } | |
445 | ||
446 | /* Store register REGNO, or all if REGNO == 0. | |
447 | Return errno value. */ | |
448 | static void | |
fba45db2 | 449 | st2000_store_register (int regno) |
c906108c SS |
450 | { |
451 | if (regno == -1) | |
452 | st2000_store_registers (); | |
453 | else | |
454 | { | |
455 | printf_stdebug ("PR %s %x\r", get_reg_name (regno), | |
456 | read_register (regno)); | |
457 | ||
458 | expect_prompt (1); | |
459 | } | |
460 | } | |
461 | ||
462 | /* Get ready to modify the registers array. On machines which store | |
463 | individual registers, this doesn't need to do anything. On machines | |
464 | which store all the registers in one fell swoop, this makes sure | |
465 | that registers contains all the registers from the program being | |
466 | debugged. */ | |
467 | ||
468 | static void | |
fba45db2 | 469 | st2000_prepare_to_store (void) |
c906108c SS |
470 | { |
471 | /* Do nothing, since we can store individual regs */ | |
472 | } | |
473 | ||
474 | static void | |
fba45db2 | 475 | st2000_files_info (void) |
c906108c SS |
476 | { |
477 | printf ("\tAttached to %s at %d baud.\n", | |
478 | dev_name, baudrate); | |
479 | } | |
480 | ||
481 | /* Copy LEN bytes of data from debugger memory at MYADDR | |
482 | to inferior's memory at MEMADDR. Returns length moved. */ | |
483 | static int | |
fba45db2 | 484 | st2000_write_inferior_memory (CORE_ADDR memaddr, unsigned char *myaddr, int len) |
c906108c SS |
485 | { |
486 | int i; | |
487 | ||
488 | for (i = 0; i < len; i++) | |
489 | { | |
490 | printf_stdebug ("PM.B %x %x\r", memaddr + i, myaddr[i]); | |
491 | expect_prompt (1); | |
492 | } | |
493 | return len; | |
494 | } | |
495 | ||
496 | /* Read LEN bytes from inferior memory at MEMADDR. Put the result | |
497 | at debugger address MYADDR. Returns length moved. */ | |
498 | static int | |
fba45db2 | 499 | st2000_read_inferior_memory (CORE_ADDR memaddr, char *myaddr, int len) |
c906108c SS |
500 | { |
501 | int i; | |
502 | ||
503 | /* Number of bytes read so far. */ | |
504 | int count; | |
505 | ||
506 | /* Starting address of this pass. */ | |
507 | unsigned long startaddr; | |
508 | ||
509 | /* Number of bytes to read in this pass. */ | |
510 | int len_this_pass; | |
511 | ||
512 | /* Note that this code works correctly if startaddr is just less | |
513 | than UINT_MAX (well, really CORE_ADDR_MAX if there was such a | |
514 | thing). That is, something like | |
515 | st2000_read_bytes (CORE_ADDR_MAX - 4, foo, 4) | |
516 | works--it never adds len to memaddr and gets 0. */ | |
517 | /* However, something like | |
518 | st2000_read_bytes (CORE_ADDR_MAX - 3, foo, 4) | |
519 | doesn't need to work. Detect it and give up if there's an attempt | |
520 | to do that. */ | |
c5aa993b JM |
521 | if (((memaddr - 1) + len) < memaddr) |
522 | { | |
523 | errno = EIO; | |
524 | return 0; | |
525 | } | |
526 | ||
c906108c SS |
527 | startaddr = memaddr; |
528 | count = 0; | |
529 | while (count < len) | |
530 | { | |
531 | len_this_pass = 16; | |
532 | if ((startaddr % 16) != 0) | |
533 | len_this_pass -= startaddr % 16; | |
534 | if (len_this_pass > (len - count)) | |
535 | len_this_pass = (len - count); | |
536 | ||
537 | printf_stdebug ("DI.L %x %x\r", startaddr, len_this_pass); | |
538 | expect (": ", 1); | |
539 | ||
540 | for (i = 0; i < len_this_pass; i++) | |
541 | get_hex_byte (&myaddr[count++]); | |
542 | ||
543 | expect_prompt (1); | |
544 | ||
545 | startaddr += len_this_pass; | |
546 | } | |
547 | return len; | |
548 | } | |
549 | ||
832c69cf KB |
550 | /* Transfer LEN bytes between GDB address MYADDR and target address |
551 | MEMADDR. If WRITE is non-zero, transfer them to the target, | |
552 | otherwise transfer them from the target. TARGET is unused. | |
553 | ||
554 | Returns the number of bytes transferred. */ | |
555 | ||
c906108c | 556 | static int |
832c69cf | 557 | st2000_xfer_inferior_memory (CORE_ADDR memaddr, char *myaddr, int len, |
29e57380 C |
558 | int write, |
559 | struct mem_attrib *attrib ATTRIBUTE_UNUSED, | |
560 | struct target_ops *target ATTRIBUTE_UNUSED) | |
c906108c SS |
561 | { |
562 | if (write) | |
563 | return st2000_write_inferior_memory (memaddr, myaddr, len); | |
564 | else | |
565 | return st2000_read_inferior_memory (memaddr, myaddr, len); | |
566 | } | |
567 | ||
568 | static void | |
fba45db2 | 569 | st2000_kill (char *args, int from_tty) |
c906108c | 570 | { |
c5aa993b | 571 | return; /* Ignore attempts to kill target system */ |
c906108c SS |
572 | } |
573 | ||
574 | /* Clean up when a program exits. | |
575 | ||
576 | The program actually lives on in the remote processor's RAM, and may be | |
577 | run again without a download. Don't leave it full of breakpoint | |
578 | instructions. */ | |
579 | ||
580 | static void | |
fba45db2 | 581 | st2000_mourn_inferior (void) |
c906108c SS |
582 | { |
583 | remove_breakpoints (); | |
584 | unpush_target (&st2000_ops); | |
585 | generic_mourn_inferior (); /* Do all the proper things now */ | |
586 | } | |
587 | ||
588 | #define MAX_STDEBUG_BREAKPOINTS 16 | |
589 | ||
c5aa993b JM |
590 | static CORE_ADDR breakaddr[MAX_STDEBUG_BREAKPOINTS] = |
591 | {0}; | |
c906108c SS |
592 | |
593 | static int | |
fba45db2 | 594 | st2000_insert_breakpoint (CORE_ADDR addr, char *shadow) |
c906108c SS |
595 | { |
596 | int i; | |
597 | CORE_ADDR bp_addr = addr; | |
598 | int bp_size = 0; | |
599 | ||
600 | BREAKPOINT_FROM_PC (&bp_addr, &bp_size); | |
601 | ||
602 | for (i = 0; i <= MAX_STDEBUG_BREAKPOINTS; i++) | |
603 | if (breakaddr[i] == 0) | |
604 | { | |
605 | breakaddr[i] = addr; | |
606 | ||
607 | st2000_read_inferior_memory (bp_addr, shadow, bp_size); | |
c5aa993b JM |
608 | printf_stdebug ("BR %x H\r", addr); |
609 | expect_prompt (1); | |
c906108c SS |
610 | return 0; |
611 | } | |
612 | ||
c5aa993b | 613 | fprintf (stderr, "Too many breakpoints (> 16) for STDBUG\n"); |
c906108c SS |
614 | return 1; |
615 | } | |
616 | ||
617 | static int | |
fba45db2 | 618 | st2000_remove_breakpoint (CORE_ADDR addr, char *shadow) |
c906108c SS |
619 | { |
620 | int i; | |
621 | ||
622 | for (i = 0; i < MAX_STDEBUG_BREAKPOINTS; i++) | |
623 | if (breakaddr[i] == addr) | |
624 | { | |
625 | breakaddr[i] = 0; | |
626 | ||
c5aa993b JM |
627 | printf_stdebug ("CB %d\r", i); |
628 | expect_prompt (1); | |
c906108c SS |
629 | return 0; |
630 | } | |
631 | ||
c5aa993b | 632 | fprintf (stderr, "Can't find breakpoint associated with 0x%x\n", addr); |
c906108c SS |
633 | return 1; |
634 | } | |
635 | ||
636 | ||
637 | /* Put a command string, in args, out to STDBUG. Output from STDBUG is placed | |
638 | on the users terminal until the prompt is seen. */ | |
639 | ||
640 | static void | |
fba45db2 | 641 | st2000_command (char *args, int fromtty) |
c906108c SS |
642 | { |
643 | if (!st2000_desc) | |
c5aa993b JM |
644 | error ("st2000 target not open."); |
645 | ||
c906108c | 646 | if (!args) |
c5aa993b JM |
647 | error ("Missing command."); |
648 | ||
649 | printf_stdebug ("%s\r", args); | |
650 | expect_prompt (0); | |
c906108c SS |
651 | } |
652 | ||
653 | /* Connect the user directly to STDBUG. This command acts just like the | |
654 | 'cu' or 'tip' command. Use <CR>~. or <CR>~^D to break out. */ | |
655 | ||
c5aa993b | 656 | /*static struct ttystate ttystate; */ |
c906108c SS |
657 | |
658 | static void | |
fba45db2 | 659 | cleanup_tty (void) |
c906108c | 660 | { |
c5aa993b JM |
661 | printf ("\r\n[Exiting connect mode]\r\n"); |
662 | /* SERIAL_RESTORE(0, &ttystate); */ | |
c906108c SS |
663 | } |
664 | ||
665 | #if 0 | |
666 | /* This all should now be in serial.c */ | |
667 | ||
668 | static void | |
fba45db2 | 669 | connect_command (char *args, int fromtty) |
c906108c SS |
670 | { |
671 | fd_set readfds; | |
672 | int numfds; | |
673 | int c; | |
674 | char cur_esc = 0; | |
675 | ||
c5aa993b | 676 | dont_repeat (); |
c906108c SS |
677 | |
678 | if (st2000_desc < 0) | |
c5aa993b JM |
679 | error ("st2000 target not open."); |
680 | ||
c906108c | 681 | if (args) |
c5aa993b | 682 | fprintf ("This command takes no args. They have been ignored.\n"); |
c906108c | 683 | |
c5aa993b | 684 | printf ("[Entering connect mode. Use ~. or ~^D to escape]\n"); |
c906108c | 685 | |
c5aa993b | 686 | serial_raw (0, &ttystate); |
c906108c | 687 | |
c5aa993b JM |
688 | make_cleanup (cleanup_tty, 0); |
689 | ||
690 | FD_ZERO (&readfds); | |
c906108c SS |
691 | |
692 | while (1) | |
693 | { | |
694 | do | |
695 | { | |
c5aa993b | 696 | FD_SET (0, &readfds); |
c2c6d25f | 697 | FD_SET (DEPRECATED_SERIAL_FD (st2000_desc), &readfds); |
c5aa993b | 698 | numfds = select (sizeof (readfds) * 8, &readfds, 0, 0, 0); |
c906108c SS |
699 | } |
700 | while (numfds == 0); | |
701 | ||
702 | if (numfds < 0) | |
c5aa993b | 703 | perror_with_name ("select"); |
c906108c | 704 | |
c5aa993b | 705 | if (FD_ISSET (0, &readfds)) |
c906108c | 706 | { /* tty input, send to stdebug */ |
c5aa993b | 707 | c = getchar (); |
c906108c | 708 | if (c < 0) |
c5aa993b | 709 | perror_with_name ("connect"); |
c906108c | 710 | |
c5aa993b | 711 | printf_stdebug ("%c", c); |
c906108c SS |
712 | switch (cur_esc) |
713 | { | |
714 | case 0: | |
715 | if (c == '\r') | |
716 | cur_esc = c; | |
717 | break; | |
718 | case '\r': | |
719 | if (c == '~') | |
720 | cur_esc = c; | |
721 | else | |
722 | cur_esc = 0; | |
723 | break; | |
724 | case '~': | |
725 | if (c == '.' || c == '\004') | |
726 | return; | |
727 | else | |
728 | cur_esc = 0; | |
729 | } | |
730 | } | |
731 | ||
c2c6d25f | 732 | if (FD_ISSET (DEPRECATED_SERIAL_FD (st2000_desc), &readfds)) |
c906108c SS |
733 | { |
734 | while (1) | |
735 | { | |
c5aa993b | 736 | c = readchar (0); |
c906108c SS |
737 | if (c < 0) |
738 | break; | |
c5aa993b | 739 | putchar (c); |
c906108c | 740 | } |
c5aa993b | 741 | fflush (stdout); |
c906108c SS |
742 | } |
743 | } | |
744 | } | |
745 | #endif /* 0 */ | |
746 | ||
747 | /* Define the target subroutine names */ | |
748 | ||
c5aa993b | 749 | struct target_ops st2000_ops; |
c906108c | 750 | |
c5aa993b JM |
751 | static void |
752 | init_st2000_ops (void) | |
c906108c | 753 | { |
c5aa993b JM |
754 | st2000_ops.to_shortname = "st2000"; |
755 | st2000_ops.to_longname = "Remote serial Tandem ST2000 target"; | |
756 | st2000_ops.to_doc = "Use a remote computer running STDEBUG connected by a serial line;\n\ | |
c906108c SS |
757 | or a network connection.\n\ |
758 | Arguments are the name of the device for the serial line,\n\ | |
c5aa993b JM |
759 | the speed to connect at in bits per second."; |
760 | st2000_ops.to_open = st2000_open; | |
761 | st2000_ops.to_close = st2000_close; | |
762 | st2000_ops.to_attach = 0; | |
c906108c SS |
763 | st2000_run_ops.to_post_attach = NULL; |
764 | st2000_ops.to_require_attach = NULL; | |
c5aa993b | 765 | st2000_ops.to_detach = st2000_detach; |
c906108c | 766 | st2000_ops.to_require_detach = NULL; |
c5aa993b JM |
767 | st2000_ops.to_resume = st2000_resume; |
768 | st2000_ops.to_wait = st2000_wait; | |
c906108c | 769 | st2000_ops.to_post_wait = NULL; |
c5aa993b JM |
770 | st2000_ops.to_fetch_registers = st2000_fetch_register; |
771 | st2000_ops.to_store_registers = st2000_store_register; | |
772 | st2000_ops.to_prepare_to_store = st2000_prepare_to_store; | |
773 | st2000_ops.to_xfer_memory = st2000_xfer_inferior_memory; | |
774 | st2000_ops.to_files_info = st2000_files_info; | |
775 | st2000_ops.to_insert_breakpoint = st2000_insert_breakpoint; | |
776 | st2000_ops.to_remove_breakpoint = st2000_remove_breakpoint; /* Breakpoints */ | |
777 | st2000_ops.to_terminal_init = 0; | |
778 | st2000_ops.to_terminal_inferior = 0; | |
779 | st2000_ops.to_terminal_ours_for_output = 0; | |
780 | st2000_ops.to_terminal_ours = 0; | |
781 | st2000_ops.to_terminal_info = 0; /* Terminal handling */ | |
782 | st2000_ops.to_kill = st2000_kill; | |
783 | st2000_ops.to_load = 0; /* load */ | |
784 | st2000_ops.to_lookup_symbol = 0; /* lookup_symbol */ | |
785 | st2000_ops.to_create_inferior = st2000_create_inferior; | |
c906108c SS |
786 | st2000_ops.to_post_startup_inferior = NULL; |
787 | st2000_ops.to_acknowledge_created_inferior = NULL; | |
788 | st2000_ops.to_clone_and_follow_inferior = NULL; | |
789 | st2000_ops.to_post_follow_inferior_by_clone = NULL; | |
790 | st2000_run_ops.to_insert_fork_catchpoint = NULL; | |
791 | st2000_run_ops.to_remove_fork_catchpoint = NULL; | |
792 | st2000_run_ops.to_insert_vfork_catchpoint = NULL; | |
793 | st2000_run_ops.to_remove_vfork_catchpoint = NULL; | |
794 | st2000_ops.to_has_forked = NULL; | |
795 | st2000_ops.to_has_vforked = NULL; | |
796 | st2000_run_ops.to_can_follow_vfork_prior_to_exec = NULL; | |
797 | st2000_ops.to_post_follow_vfork = NULL; | |
798 | st2000_run_ops.to_insert_exec_catchpoint = NULL; | |
799 | st2000_run_ops.to_remove_exec_catchpoint = NULL; | |
800 | st2000_run_ops.to_has_execd = NULL; | |
801 | st2000_run_ops.to_reported_exec_events_per_exec_call = NULL; | |
802 | st2000_run_ops.to_has_exited = NULL; | |
c5aa993b JM |
803 | st2000_ops.to_mourn_inferior = st2000_mourn_inferior; |
804 | st2000_ops.to_can_run = 0; /* can_run */ | |
805 | st2000_ops.to_notice_signals = 0; /* notice_signals */ | |
806 | st2000_ops.to_thread_alive = 0; /* thread alive */ | |
807 | st2000_ops.to_stop = 0; /* to_stop */ | |
c906108c SS |
808 | st2000_ops.to_pid_to_exec_file = NULL; |
809 | st2000_run_ops.to_core_file_to_sym_file = NULL; | |
c5aa993b JM |
810 | st2000_ops.to_stratum = process_stratum; |
811 | st2000_ops.DONT_USE = 0; /* next */ | |
812 | st2000_ops.to_has_all_memory = 1; | |
813 | st2000_ops.to_has_memory = 1; | |
814 | st2000_ops.to_has_stack = 1; | |
815 | st2000_ops.to_has_registers = 1; | |
816 | st2000_ops.to_has_execution = 1; /* all mem, mem, stack, regs, exec */ | |
817 | st2000_ops.to_sections = 0; | |
818 | st2000_ops.to_sections_end = 0; /* Section pointers */ | |
819 | st2000_ops.to_magic = OPS_MAGIC; /* Always the last thing */ | |
820 | }; | |
c906108c SS |
821 | |
822 | void | |
fba45db2 | 823 | _initialize_remote_st2000 (void) |
c906108c | 824 | { |
c5aa993b | 825 | init_st2000_ops (); |
c906108c SS |
826 | add_target (&st2000_ops); |
827 | add_com ("st2000 <command>", class_obscure, st2000_command, | |
828 | "Send a command to the STDBUG monitor."); | |
829 | add_com ("connect", class_obscure, connect_command, | |
830 | "Connect the terminal directly up to the STDBUG command monitor.\n\ | |
831 | Use <CR>~. or <CR>~^D to break out."); | |
832 | } |