Commit | Line | Data |
---|---|---|
c906108c | 1 | /* Remote debugging interface for Tandem ST2000 phone switch, for GDB. |
0a65a603 AC |
2 | |
3 | Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1998, 1999, 2000, | |
4 | 2001, 2002 Free Software Foundation, Inc. | |
5 | ||
c906108c SS |
6 | Contributed by Cygnus Support. Written by Jim Kingdon for Cygnus. |
7 | ||
c5aa993b | 8 | This file is part of GDB. |
c906108c | 9 | |
c5aa993b JM |
10 | This program is free software; you can redistribute it and/or modify |
11 | it under the terms of the GNU General Public License as published by | |
12 | the Free Software Foundation; either version 2 of the License, or | |
13 | (at your option) any later version. | |
c906108c | 14 | |
c5aa993b JM |
15 | This program is distributed in the hope that it will be useful, |
16 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | GNU General Public License for more details. | |
c906108c | 19 | |
c5aa993b JM |
20 | You should have received a copy of the GNU General Public License |
21 | along with this program; if not, write to the Free Software | |
22 | Foundation, Inc., 59 Temple Place - Suite 330, | |
23 | Boston, MA 02111-1307, USA. */ | |
c906108c SS |
24 | |
25 | /* This file was derived from remote-eb.c, which did a similar job, but for | |
26 | an AMD-29K running EBMON. That file was in turn derived from remote.c | |
27 | as mentioned in the following comment (left in for comic relief): | |
28 | ||
c5aa993b | 29 | "This is like remote.c but is for an esoteric situation-- |
c906108c SS |
30 | having an a29k board in a PC hooked up to a unix machine with |
31 | a serial line, and running ctty com1 on the PC, through which | |
32 | the unix machine can run ebmon. Not to mention that the PC | |
33 | has PC/NFS, so it can access the same executables that gdb can, | |
34 | over the net in real time." | |
35 | ||
36 | In reality, this module talks to a debug monitor called 'STDEBUG', which | |
37 | runs in a phone switch. We communicate with STDEBUG via either a direct | |
38 | serial line, or a TCP (or possibly TELNET) stream to a terminal multiplexor, | |
39 | which in turn talks to the phone switch. */ | |
40 | ||
41 | #include "defs.h" | |
42 | #include "gdbcore.h" | |
43 | #include "target.h" | |
43ff13b4 | 44 | #include "gdb_string.h" |
9846de1b | 45 | #include <sys/types.h> |
c906108c | 46 | #include "serial.h" |
4e052eda | 47 | #include "regcache.h" |
c906108c | 48 | |
c5aa993b | 49 | extern struct target_ops st2000_ops; /* Forward declaration */ |
c906108c | 50 | |
c5aa993b JM |
51 | static void st2000_close (); |
52 | static void st2000_fetch_register (); | |
53 | static void st2000_store_register (); | |
c906108c SS |
54 | |
55 | #define LOG_FILE "st2000.log" | |
56 | #if defined (LOG_FILE) | |
57 | FILE *log_file; | |
58 | #endif | |
59 | ||
60 | static int timeout = 24; | |
61 | ||
62 | /* Descriptor for I/O to remote machine. Initialize it to -1 so that | |
63 | st2000_open knows that we don't have a file open when the program | |
64 | starts. */ | |
65 | ||
819cc324 | 66 | static struct serial *st2000_desc; |
c906108c SS |
67 | |
68 | /* Send data to stdebug. Works just like printf. */ | |
69 | ||
70 | static void | |
c5aa993b | 71 | printf_stdebug (char *pattern,...) |
c906108c SS |
72 | { |
73 | va_list args; | |
74 | char buf[200]; | |
75 | ||
c5aa993b | 76 | va_start (args, pattern); |
c906108c | 77 | |
c5aa993b JM |
78 | vsprintf (buf, pattern, args); |
79 | va_end (args); | |
c906108c | 80 | |
2cd58942 AC |
81 | if (serial_write (st2000_desc, buf, strlen (buf))) |
82 | fprintf (stderr, "serial_write failed: %s\n", safe_strerror (errno)); | |
c906108c SS |
83 | } |
84 | ||
85 | /* Read a character from the remote system, doing all the fancy timeout | |
86 | stuff. */ | |
87 | ||
88 | static int | |
fba45db2 | 89 | readchar (int timeout) |
c906108c SS |
90 | { |
91 | int c; | |
92 | ||
2cd58942 | 93 | c = serial_readchar (st2000_desc, timeout); |
c906108c SS |
94 | |
95 | #ifdef LOG_FILE | |
c5aa993b | 96 | putc (c & 0x7f, log_file); |
c906108c SS |
97 | #endif |
98 | ||
99 | if (c >= 0) | |
100 | return c & 0x7f; | |
101 | ||
102 | if (c == SERIAL_TIMEOUT) | |
103 | { | |
104 | if (timeout == 0) | |
105 | return c; /* Polls shouldn't generate timeout errors */ | |
106 | ||
c5aa993b | 107 | error ("Timeout reading from remote system."); |
c906108c SS |
108 | } |
109 | ||
c5aa993b | 110 | perror_with_name ("remote-st2000"); |
c906108c SS |
111 | } |
112 | ||
113 | /* Scan input from the remote system, until STRING is found. If DISCARD is | |
114 | non-zero, then discard non-matching input, else print it out. | |
115 | Let the user break out immediately. */ | |
116 | static void | |
fba45db2 | 117 | expect (char *string, int discard) |
c906108c SS |
118 | { |
119 | char *p = string; | |
120 | int c; | |
121 | ||
8edbea78 | 122 | immediate_quit++; |
c906108c SS |
123 | while (1) |
124 | { | |
c5aa993b | 125 | c = readchar (timeout); |
c906108c SS |
126 | if (c == *p++) |
127 | { | |
128 | if (*p == '\0') | |
129 | { | |
8edbea78 | 130 | immediate_quit--; |
c906108c SS |
131 | return; |
132 | } | |
133 | } | |
134 | else | |
135 | { | |
136 | if (!discard) | |
137 | { | |
c5aa993b JM |
138 | fwrite (string, 1, (p - 1) - string, stdout); |
139 | putchar ((char) c); | |
140 | fflush (stdout); | |
c906108c SS |
141 | } |
142 | p = string; | |
143 | } | |
144 | } | |
145 | } | |
146 | ||
147 | /* Keep discarding input until we see the STDEBUG prompt. | |
148 | ||
149 | The convention for dealing with the prompt is that you | |
150 | o give your command | |
151 | o *then* wait for the prompt. | |
152 | ||
153 | Thus the last thing that a procedure does with the serial line | |
154 | will be an expect_prompt(). Exception: st2000_resume does not | |
155 | wait for the prompt, because the terminal is being handed over | |
156 | to the inferior. However, the next thing which happens after that | |
157 | is a st2000_wait which does wait for the prompt. | |
158 | Note that this includes abnormal exit, e.g. error(). This is | |
159 | necessary to prevent getting into states from which we can't | |
160 | recover. */ | |
161 | static void | |
fba45db2 | 162 | expect_prompt (int discard) |
c906108c SS |
163 | { |
164 | #if defined (LOG_FILE) | |
165 | /* This is a convenient place to do this. The idea is to do it often | |
166 | enough that we never lose much data if we terminate abnormally. */ | |
c5aa993b | 167 | fflush (log_file); |
c906108c SS |
168 | #endif |
169 | expect ("dbug> ", discard); | |
170 | } | |
171 | ||
172 | /* Get a hex digit from the remote system & return its value. | |
173 | If ignore_space is nonzero, ignore spaces (not newline, tab, etc). */ | |
174 | static int | |
fba45db2 | 175 | get_hex_digit (int ignore_space) |
c906108c SS |
176 | { |
177 | int ch; | |
178 | while (1) | |
179 | { | |
c5aa993b | 180 | ch = readchar (timeout); |
c906108c SS |
181 | if (ch >= '0' && ch <= '9') |
182 | return ch - '0'; | |
183 | else if (ch >= 'A' && ch <= 'F') | |
184 | return ch - 'A' + 10; | |
185 | else if (ch >= 'a' && ch <= 'f') | |
186 | return ch - 'a' + 10; | |
187 | else if (ch == ' ' && ignore_space) | |
188 | ; | |
189 | else | |
190 | { | |
c5aa993b JM |
191 | expect_prompt (1); |
192 | error ("Invalid hex digit from remote system."); | |
c906108c SS |
193 | } |
194 | } | |
195 | } | |
196 | ||
197 | /* Get a byte from stdebug and put it in *BYT. Accept any number | |
198 | leading spaces. */ | |
199 | static void | |
fba45db2 | 200 | get_hex_byte (char *byt) |
c906108c SS |
201 | { |
202 | int val; | |
203 | ||
204 | val = get_hex_digit (1) << 4; | |
205 | val |= get_hex_digit (0); | |
206 | *byt = val; | |
207 | } | |
208 | ||
209 | /* Get N 32-bit words from remote, each preceded by a space, | |
210 | and put them in registers starting at REGNO. */ | |
211 | static void | |
fba45db2 | 212 | get_hex_regs (int n, int regno) |
c906108c SS |
213 | { |
214 | long val; | |
215 | int i; | |
216 | ||
217 | for (i = 0; i < n; i++) | |
218 | { | |
219 | int j; | |
c5aa993b | 220 | |
c906108c SS |
221 | val = 0; |
222 | for (j = 0; j < 8; j++) | |
223 | val = (val << 4) + get_hex_digit (j == 0); | |
224 | supply_register (regno++, (char *) &val); | |
225 | } | |
226 | } | |
227 | ||
228 | /* This is called not only when we first attach, but also when the | |
229 | user types "run" after having attached. */ | |
230 | static void | |
fba45db2 | 231 | st2000_create_inferior (char *execfile, char *args, char **env) |
c906108c SS |
232 | { |
233 | int entry_pt; | |
234 | ||
235 | if (args && *args) | |
c5aa993b | 236 | error ("Can't pass arguments to remote STDEBUG process"); |
c906108c SS |
237 | |
238 | if (execfile == 0 || exec_bfd == 0) | |
c5aa993b | 239 | error ("No executable file specified"); |
c906108c SS |
240 | |
241 | entry_pt = (int) bfd_get_start_address (exec_bfd); | |
242 | ||
243 | /* The "process" (board) is already stopped awaiting our commands, and | |
244 | the program is already downloaded. We just set its PC and go. */ | |
245 | ||
246 | clear_proceed_status (); | |
247 | ||
248 | /* Tell wait_for_inferior that we've started a new process. */ | |
249 | init_wait_for_inferior (); | |
250 | ||
251 | /* Set up the "saved terminal modes" of the inferior | |
252 | based on what modes we are starting it with. */ | |
253 | target_terminal_init (); | |
254 | ||
255 | /* Install inferior's terminal modes. */ | |
256 | target_terminal_inferior (); | |
257 | ||
258 | /* insert_step_breakpoint (); FIXME, do we need this? */ | |
259 | /* Let 'er rip... */ | |
c5aa993b | 260 | proceed ((CORE_ADDR) entry_pt, TARGET_SIGNAL_DEFAULT, 0); |
c906108c SS |
261 | } |
262 | ||
263 | /* Open a connection to a remote debugger. | |
264 | NAME is the filename used for communication. */ | |
265 | ||
266 | static int baudrate = 9600; | |
267 | static char dev_name[100]; | |
268 | ||
269 | static void | |
fba45db2 | 270 | st2000_open (char *args, int from_tty) |
c906108c SS |
271 | { |
272 | int n; | |
273 | char junk[100]; | |
274 | ||
c5aa993b JM |
275 | target_preopen (from_tty); |
276 | ||
277 | n = sscanf (args, " %s %d %s", dev_name, &baudrate, junk); | |
c906108c SS |
278 | |
279 | if (n != 2) | |
c5aa993b | 280 | error ("Bad arguments. Usage: target st2000 <device> <speed>\n\ |
c906108c SS |
281 | or target st2000 <host> <port>\n"); |
282 | ||
c5aa993b | 283 | st2000_close (0); |
c906108c | 284 | |
2cd58942 | 285 | st2000_desc = serial_open (dev_name); |
c906108c SS |
286 | |
287 | if (!st2000_desc) | |
c5aa993b | 288 | perror_with_name (dev_name); |
c906108c | 289 | |
2cd58942 | 290 | if (serial_setbaudrate (st2000_desc, baudrate)) |
67dd5ca6 | 291 | { |
2cd58942 | 292 | serial_close (dev_name); |
67dd5ca6 FN |
293 | perror_with_name (dev_name); |
294 | } | |
c906108c | 295 | |
2cd58942 | 296 | serial_raw (st2000_desc); |
c906108c | 297 | |
c5aa993b | 298 | push_target (&st2000_ops); |
c906108c SS |
299 | |
300 | #if defined (LOG_FILE) | |
301 | log_file = fopen (LOG_FILE, "w"); | |
302 | if (log_file == NULL) | |
303 | perror_with_name (LOG_FILE); | |
304 | #endif | |
305 | ||
306 | /* Hello? Are you there? */ | |
c5aa993b JM |
307 | printf_stdebug ("\003"); /* ^C wakes up dbug */ |
308 | ||
309 | expect_prompt (1); | |
c906108c SS |
310 | |
311 | if (from_tty) | |
c5aa993b JM |
312 | printf ("Remote %s connected to %s\n", target_shortname, |
313 | dev_name); | |
c906108c SS |
314 | } |
315 | ||
316 | /* Close out all files and local state before this target loses control. */ | |
317 | ||
318 | static void | |
fba45db2 | 319 | st2000_close (int quitting) |
c906108c | 320 | { |
2cd58942 | 321 | serial_close (st2000_desc); |
c906108c SS |
322 | |
323 | #if defined (LOG_FILE) | |
c5aa993b JM |
324 | if (log_file) |
325 | { | |
326 | if (ferror (log_file)) | |
327 | fprintf (stderr, "Error writing log file.\n"); | |
328 | if (fclose (log_file) != 0) | |
329 | fprintf (stderr, "Error closing log file.\n"); | |
330 | } | |
c906108c SS |
331 | #endif |
332 | } | |
333 | ||
334 | /* Terminate the open connection to the remote debugger. | |
335 | Use this when you want to detach and do something else | |
336 | with your gdb. */ | |
337 | static void | |
fba45db2 | 338 | st2000_detach (int from_tty) |
c906108c | 339 | { |
c5aa993b | 340 | pop_target (); /* calls st2000_close to do the real work */ |
c906108c SS |
341 | if (from_tty) |
342 | printf ("Ending remote %s debugging\n", target_shortname); | |
343 | } | |
c5aa993b | 344 | |
c906108c SS |
345 | /* Tell the remote machine to resume. */ |
346 | ||
347 | static void | |
39f77062 | 348 | st2000_resume (ptid_t ptid, int step, enum target_signal sig) |
c906108c SS |
349 | { |
350 | if (step) | |
351 | { | |
352 | printf_stdebug ("ST\r"); | |
353 | /* Wait for the echo. */ | |
354 | expect ("ST\r", 1); | |
355 | } | |
356 | else | |
357 | { | |
358 | printf_stdebug ("GO\r"); | |
359 | /* Swallow the echo. */ | |
360 | expect ("GO\r", 1); | |
361 | } | |
362 | } | |
363 | ||
364 | /* Wait until the remote machine stops, then return, | |
365 | storing status in STATUS just as `wait' would. */ | |
366 | ||
39f77062 KB |
367 | static ptid_t |
368 | st2000_wait (ptid_t ptid, struct target_waitstatus *status) | |
c906108c SS |
369 | { |
370 | int old_timeout = timeout; | |
371 | ||
372 | status->kind = TARGET_WAITKIND_EXITED; | |
373 | status->value.integer = 0; | |
374 | ||
c5aa993b | 375 | timeout = 0; /* Don't time out -- user program is running. */ |
c906108c | 376 | |
c5aa993b | 377 | expect_prompt (0); /* Wait for prompt, outputting extraneous text */ |
c906108c SS |
378 | |
379 | status->kind = TARGET_WAITKIND_STOPPED; | |
380 | status->value.sig = TARGET_SIGNAL_TRAP; | |
381 | ||
382 | timeout = old_timeout; | |
383 | ||
39f77062 | 384 | return inferior_ptid; |
c906108c SS |
385 | } |
386 | ||
387 | /* Return the name of register number REGNO in the form input and output by | |
388 | STDEBUG. Currently, REGISTER_NAMES just happens to contain exactly what | |
389 | STDEBUG wants. Lets take advantage of that just as long as possible! */ | |
390 | ||
391 | static char * | |
fba45db2 | 392 | get_reg_name (int regno) |
c906108c SS |
393 | { |
394 | static char buf[50]; | |
395 | const char *p; | |
396 | char *b; | |
397 | ||
398 | b = buf; | |
399 | ||
400 | for (p = REGISTER_NAME (regno); *p; p++) | |
c5aa993b | 401 | *b++ = toupper (*p); |
c906108c SS |
402 | *b = '\000'; |
403 | ||
404 | return buf; | |
405 | } | |
406 | ||
407 | /* Read the remote registers into the block REGS. */ | |
408 | ||
409 | static void | |
fba45db2 | 410 | st2000_fetch_registers (void) |
c906108c SS |
411 | { |
412 | int regno; | |
413 | ||
414 | /* Yeah yeah, I know this is horribly inefficient. But it isn't done | |
415 | very often... I'll clean it up later. */ | |
416 | ||
417 | for (regno = 0; regno <= PC_REGNUM; regno++) | |
c5aa993b | 418 | st2000_fetch_register (regno); |
c906108c SS |
419 | } |
420 | ||
421 | /* Fetch register REGNO, or all registers if REGNO is -1. | |
422 | Returns errno value. */ | |
423 | static void | |
fba45db2 | 424 | st2000_fetch_register (int regno) |
c906108c SS |
425 | { |
426 | if (regno == -1) | |
427 | st2000_fetch_registers (); | |
428 | else | |
429 | { | |
430 | char *name = get_reg_name (regno); | |
431 | printf_stdebug ("DR %s\r", name); | |
432 | expect (name, 1); | |
433 | expect (" : ", 1); | |
434 | get_hex_regs (1, regno); | |
435 | expect_prompt (1); | |
436 | } | |
437 | return; | |
438 | } | |
439 | ||
440 | /* Store the remote registers from the contents of the block REGS. */ | |
441 | ||
442 | static void | |
fba45db2 | 443 | st2000_store_registers (void) |
c906108c SS |
444 | { |
445 | int regno; | |
446 | ||
447 | for (regno = 0; regno <= PC_REGNUM; regno++) | |
c5aa993b | 448 | st2000_store_register (regno); |
c906108c SS |
449 | |
450 | registers_changed (); | |
451 | } | |
452 | ||
453 | /* Store register REGNO, or all if REGNO == 0. | |
454 | Return errno value. */ | |
455 | static void | |
fba45db2 | 456 | st2000_store_register (int regno) |
c906108c SS |
457 | { |
458 | if (regno == -1) | |
459 | st2000_store_registers (); | |
460 | else | |
461 | { | |
462 | printf_stdebug ("PR %s %x\r", get_reg_name (regno), | |
463 | read_register (regno)); | |
464 | ||
465 | expect_prompt (1); | |
466 | } | |
467 | } | |
468 | ||
469 | /* Get ready to modify the registers array. On machines which store | |
470 | individual registers, this doesn't need to do anything. On machines | |
471 | which store all the registers in one fell swoop, this makes sure | |
472 | that registers contains all the registers from the program being | |
473 | debugged. */ | |
474 | ||
475 | static void | |
fba45db2 | 476 | st2000_prepare_to_store (void) |
c906108c SS |
477 | { |
478 | /* Do nothing, since we can store individual regs */ | |
479 | } | |
480 | ||
481 | static void | |
fba45db2 | 482 | st2000_files_info (void) |
c906108c SS |
483 | { |
484 | printf ("\tAttached to %s at %d baud.\n", | |
485 | dev_name, baudrate); | |
486 | } | |
487 | ||
488 | /* Copy LEN bytes of data from debugger memory at MYADDR | |
489 | to inferior's memory at MEMADDR. Returns length moved. */ | |
490 | static int | |
fba45db2 | 491 | st2000_write_inferior_memory (CORE_ADDR memaddr, unsigned char *myaddr, int len) |
c906108c SS |
492 | { |
493 | int i; | |
494 | ||
495 | for (i = 0; i < len; i++) | |
496 | { | |
497 | printf_stdebug ("PM.B %x %x\r", memaddr + i, myaddr[i]); | |
498 | expect_prompt (1); | |
499 | } | |
500 | return len; | |
501 | } | |
502 | ||
503 | /* Read LEN bytes from inferior memory at MEMADDR. Put the result | |
504 | at debugger address MYADDR. Returns length moved. */ | |
505 | static int | |
fba45db2 | 506 | st2000_read_inferior_memory (CORE_ADDR memaddr, char *myaddr, int len) |
c906108c SS |
507 | { |
508 | int i; | |
509 | ||
510 | /* Number of bytes read so far. */ | |
511 | int count; | |
512 | ||
513 | /* Starting address of this pass. */ | |
514 | unsigned long startaddr; | |
515 | ||
516 | /* Number of bytes to read in this pass. */ | |
517 | int len_this_pass; | |
518 | ||
519 | /* Note that this code works correctly if startaddr is just less | |
520 | than UINT_MAX (well, really CORE_ADDR_MAX if there was such a | |
521 | thing). That is, something like | |
522 | st2000_read_bytes (CORE_ADDR_MAX - 4, foo, 4) | |
523 | works--it never adds len to memaddr and gets 0. */ | |
524 | /* However, something like | |
525 | st2000_read_bytes (CORE_ADDR_MAX - 3, foo, 4) | |
526 | doesn't need to work. Detect it and give up if there's an attempt | |
527 | to do that. */ | |
c5aa993b JM |
528 | if (((memaddr - 1) + len) < memaddr) |
529 | { | |
530 | errno = EIO; | |
531 | return 0; | |
532 | } | |
533 | ||
c906108c SS |
534 | startaddr = memaddr; |
535 | count = 0; | |
536 | while (count < len) | |
537 | { | |
538 | len_this_pass = 16; | |
539 | if ((startaddr % 16) != 0) | |
540 | len_this_pass -= startaddr % 16; | |
541 | if (len_this_pass > (len - count)) | |
542 | len_this_pass = (len - count); | |
543 | ||
544 | printf_stdebug ("DI.L %x %x\r", startaddr, len_this_pass); | |
545 | expect (": ", 1); | |
546 | ||
547 | for (i = 0; i < len_this_pass; i++) | |
548 | get_hex_byte (&myaddr[count++]); | |
549 | ||
550 | expect_prompt (1); | |
551 | ||
552 | startaddr += len_this_pass; | |
553 | } | |
554 | return len; | |
555 | } | |
556 | ||
832c69cf KB |
557 | /* Transfer LEN bytes between GDB address MYADDR and target address |
558 | MEMADDR. If WRITE is non-zero, transfer them to the target, | |
559 | otherwise transfer them from the target. TARGET is unused. | |
560 | ||
561 | Returns the number of bytes transferred. */ | |
562 | ||
c906108c | 563 | static int |
832c69cf | 564 | st2000_xfer_inferior_memory (CORE_ADDR memaddr, char *myaddr, int len, |
0a65a603 AC |
565 | int write, struct mem_attrib *attrib, |
566 | struct target_ops *target) | |
c906108c SS |
567 | { |
568 | if (write) | |
569 | return st2000_write_inferior_memory (memaddr, myaddr, len); | |
570 | else | |
571 | return st2000_read_inferior_memory (memaddr, myaddr, len); | |
572 | } | |
573 | ||
574 | static void | |
fba45db2 | 575 | st2000_kill (char *args, int from_tty) |
c906108c | 576 | { |
c5aa993b | 577 | return; /* Ignore attempts to kill target system */ |
c906108c SS |
578 | } |
579 | ||
580 | /* Clean up when a program exits. | |
581 | ||
582 | The program actually lives on in the remote processor's RAM, and may be | |
583 | run again without a download. Don't leave it full of breakpoint | |
584 | instructions. */ | |
585 | ||
586 | static void | |
fba45db2 | 587 | st2000_mourn_inferior (void) |
c906108c SS |
588 | { |
589 | remove_breakpoints (); | |
590 | unpush_target (&st2000_ops); | |
591 | generic_mourn_inferior (); /* Do all the proper things now */ | |
592 | } | |
593 | ||
594 | #define MAX_STDEBUG_BREAKPOINTS 16 | |
595 | ||
c5aa993b JM |
596 | static CORE_ADDR breakaddr[MAX_STDEBUG_BREAKPOINTS] = |
597 | {0}; | |
c906108c SS |
598 | |
599 | static int | |
fba45db2 | 600 | st2000_insert_breakpoint (CORE_ADDR addr, char *shadow) |
c906108c SS |
601 | { |
602 | int i; | |
603 | CORE_ADDR bp_addr = addr; | |
604 | int bp_size = 0; | |
605 | ||
606 | BREAKPOINT_FROM_PC (&bp_addr, &bp_size); | |
607 | ||
608 | for (i = 0; i <= MAX_STDEBUG_BREAKPOINTS; i++) | |
609 | if (breakaddr[i] == 0) | |
610 | { | |
611 | breakaddr[i] = addr; | |
612 | ||
613 | st2000_read_inferior_memory (bp_addr, shadow, bp_size); | |
c5aa993b JM |
614 | printf_stdebug ("BR %x H\r", addr); |
615 | expect_prompt (1); | |
c906108c SS |
616 | return 0; |
617 | } | |
618 | ||
c5aa993b | 619 | fprintf (stderr, "Too many breakpoints (> 16) for STDBUG\n"); |
c906108c SS |
620 | return 1; |
621 | } | |
622 | ||
623 | static int | |
fba45db2 | 624 | st2000_remove_breakpoint (CORE_ADDR addr, char *shadow) |
c906108c SS |
625 | { |
626 | int i; | |
627 | ||
628 | for (i = 0; i < MAX_STDEBUG_BREAKPOINTS; i++) | |
629 | if (breakaddr[i] == addr) | |
630 | { | |
631 | breakaddr[i] = 0; | |
632 | ||
c5aa993b JM |
633 | printf_stdebug ("CB %d\r", i); |
634 | expect_prompt (1); | |
c906108c SS |
635 | return 0; |
636 | } | |
637 | ||
c5aa993b | 638 | fprintf (stderr, "Can't find breakpoint associated with 0x%x\n", addr); |
c906108c SS |
639 | return 1; |
640 | } | |
641 | ||
642 | ||
643 | /* Put a command string, in args, out to STDBUG. Output from STDBUG is placed | |
644 | on the users terminal until the prompt is seen. */ | |
645 | ||
646 | static void | |
fba45db2 | 647 | st2000_command (char *args, int fromtty) |
c906108c SS |
648 | { |
649 | if (!st2000_desc) | |
c5aa993b JM |
650 | error ("st2000 target not open."); |
651 | ||
c906108c | 652 | if (!args) |
c5aa993b JM |
653 | error ("Missing command."); |
654 | ||
655 | printf_stdebug ("%s\r", args); | |
656 | expect_prompt (0); | |
c906108c SS |
657 | } |
658 | ||
659 | /* Connect the user directly to STDBUG. This command acts just like the | |
660 | 'cu' or 'tip' command. Use <CR>~. or <CR>~^D to break out. */ | |
661 | ||
c5aa993b | 662 | /*static struct ttystate ttystate; */ |
c906108c SS |
663 | |
664 | static void | |
fba45db2 | 665 | cleanup_tty (void) |
c906108c | 666 | { |
c5aa993b | 667 | printf ("\r\n[Exiting connect mode]\r\n"); |
2cd58942 | 668 | /* serial_restore(0, &ttystate); */ |
c906108c SS |
669 | } |
670 | ||
671 | #if 0 | |
672 | /* This all should now be in serial.c */ | |
673 | ||
674 | static void | |
fba45db2 | 675 | connect_command (char *args, int fromtty) |
c906108c SS |
676 | { |
677 | fd_set readfds; | |
678 | int numfds; | |
679 | int c; | |
680 | char cur_esc = 0; | |
681 | ||
c5aa993b | 682 | dont_repeat (); |
c906108c SS |
683 | |
684 | if (st2000_desc < 0) | |
c5aa993b JM |
685 | error ("st2000 target not open."); |
686 | ||
c906108c | 687 | if (args) |
c5aa993b | 688 | fprintf ("This command takes no args. They have been ignored.\n"); |
c906108c | 689 | |
c5aa993b | 690 | printf ("[Entering connect mode. Use ~. or ~^D to escape]\n"); |
c906108c | 691 | |
c5aa993b | 692 | serial_raw (0, &ttystate); |
c906108c | 693 | |
c5aa993b JM |
694 | make_cleanup (cleanup_tty, 0); |
695 | ||
696 | FD_ZERO (&readfds); | |
c906108c SS |
697 | |
698 | while (1) | |
699 | { | |
700 | do | |
701 | { | |
c5aa993b | 702 | FD_SET (0, &readfds); |
2cd58942 | 703 | FD_SET (deprecated_serial_fd (st2000_desc), &readfds); |
c5aa993b | 704 | numfds = select (sizeof (readfds) * 8, &readfds, 0, 0, 0); |
c906108c SS |
705 | } |
706 | while (numfds == 0); | |
707 | ||
708 | if (numfds < 0) | |
c5aa993b | 709 | perror_with_name ("select"); |
c906108c | 710 | |
c5aa993b | 711 | if (FD_ISSET (0, &readfds)) |
c906108c | 712 | { /* tty input, send to stdebug */ |
c5aa993b | 713 | c = getchar (); |
c906108c | 714 | if (c < 0) |
c5aa993b | 715 | perror_with_name ("connect"); |
c906108c | 716 | |
c5aa993b | 717 | printf_stdebug ("%c", c); |
c906108c SS |
718 | switch (cur_esc) |
719 | { | |
720 | case 0: | |
721 | if (c == '\r') | |
722 | cur_esc = c; | |
723 | break; | |
724 | case '\r': | |
725 | if (c == '~') | |
726 | cur_esc = c; | |
727 | else | |
728 | cur_esc = 0; | |
729 | break; | |
730 | case '~': | |
731 | if (c == '.' || c == '\004') | |
732 | return; | |
733 | else | |
734 | cur_esc = 0; | |
735 | } | |
736 | } | |
737 | ||
2cd58942 | 738 | if (FD_ISSET (deprecated_serial_fd (st2000_desc), &readfds)) |
c906108c SS |
739 | { |
740 | while (1) | |
741 | { | |
c5aa993b | 742 | c = readchar (0); |
c906108c SS |
743 | if (c < 0) |
744 | break; | |
c5aa993b | 745 | putchar (c); |
c906108c | 746 | } |
c5aa993b | 747 | fflush (stdout); |
c906108c SS |
748 | } |
749 | } | |
750 | } | |
751 | #endif /* 0 */ | |
752 | ||
753 | /* Define the target subroutine names */ | |
754 | ||
c5aa993b | 755 | struct target_ops st2000_ops; |
c906108c | 756 | |
c5aa993b JM |
757 | static void |
758 | init_st2000_ops (void) | |
c906108c | 759 | { |
c5aa993b JM |
760 | st2000_ops.to_shortname = "st2000"; |
761 | st2000_ops.to_longname = "Remote serial Tandem ST2000 target"; | |
762 | st2000_ops.to_doc = "Use a remote computer running STDEBUG connected by a serial line;\n\ | |
c906108c SS |
763 | or a network connection.\n\ |
764 | Arguments are the name of the device for the serial line,\n\ | |
c5aa993b JM |
765 | the speed to connect at in bits per second."; |
766 | st2000_ops.to_open = st2000_open; | |
767 | st2000_ops.to_close = st2000_close; | |
768 | st2000_ops.to_attach = 0; | |
c906108c SS |
769 | st2000_run_ops.to_post_attach = NULL; |
770 | st2000_ops.to_require_attach = NULL; | |
c5aa993b | 771 | st2000_ops.to_detach = st2000_detach; |
c906108c | 772 | st2000_ops.to_require_detach = NULL; |
c5aa993b JM |
773 | st2000_ops.to_resume = st2000_resume; |
774 | st2000_ops.to_wait = st2000_wait; | |
c906108c | 775 | st2000_ops.to_post_wait = NULL; |
c5aa993b JM |
776 | st2000_ops.to_fetch_registers = st2000_fetch_register; |
777 | st2000_ops.to_store_registers = st2000_store_register; | |
778 | st2000_ops.to_prepare_to_store = st2000_prepare_to_store; | |
779 | st2000_ops.to_xfer_memory = st2000_xfer_inferior_memory; | |
780 | st2000_ops.to_files_info = st2000_files_info; | |
781 | st2000_ops.to_insert_breakpoint = st2000_insert_breakpoint; | |
782 | st2000_ops.to_remove_breakpoint = st2000_remove_breakpoint; /* Breakpoints */ | |
783 | st2000_ops.to_terminal_init = 0; | |
784 | st2000_ops.to_terminal_inferior = 0; | |
785 | st2000_ops.to_terminal_ours_for_output = 0; | |
786 | st2000_ops.to_terminal_ours = 0; | |
787 | st2000_ops.to_terminal_info = 0; /* Terminal handling */ | |
788 | st2000_ops.to_kill = st2000_kill; | |
789 | st2000_ops.to_load = 0; /* load */ | |
790 | st2000_ops.to_lookup_symbol = 0; /* lookup_symbol */ | |
791 | st2000_ops.to_create_inferior = st2000_create_inferior; | |
c906108c SS |
792 | st2000_ops.to_post_startup_inferior = NULL; |
793 | st2000_ops.to_acknowledge_created_inferior = NULL; | |
794 | st2000_ops.to_clone_and_follow_inferior = NULL; | |
795 | st2000_ops.to_post_follow_inferior_by_clone = NULL; | |
796 | st2000_run_ops.to_insert_fork_catchpoint = NULL; | |
797 | st2000_run_ops.to_remove_fork_catchpoint = NULL; | |
798 | st2000_run_ops.to_insert_vfork_catchpoint = NULL; | |
799 | st2000_run_ops.to_remove_vfork_catchpoint = NULL; | |
800 | st2000_ops.to_has_forked = NULL; | |
801 | st2000_ops.to_has_vforked = NULL; | |
802 | st2000_run_ops.to_can_follow_vfork_prior_to_exec = NULL; | |
803 | st2000_ops.to_post_follow_vfork = NULL; | |
804 | st2000_run_ops.to_insert_exec_catchpoint = NULL; | |
805 | st2000_run_ops.to_remove_exec_catchpoint = NULL; | |
806 | st2000_run_ops.to_has_execd = NULL; | |
807 | st2000_run_ops.to_reported_exec_events_per_exec_call = NULL; | |
808 | st2000_run_ops.to_has_exited = NULL; | |
c5aa993b JM |
809 | st2000_ops.to_mourn_inferior = st2000_mourn_inferior; |
810 | st2000_ops.to_can_run = 0; /* can_run */ | |
811 | st2000_ops.to_notice_signals = 0; /* notice_signals */ | |
812 | st2000_ops.to_thread_alive = 0; /* thread alive */ | |
813 | st2000_ops.to_stop = 0; /* to_stop */ | |
c906108c | 814 | st2000_ops.to_pid_to_exec_file = NULL; |
c5aa993b JM |
815 | st2000_ops.to_stratum = process_stratum; |
816 | st2000_ops.DONT_USE = 0; /* next */ | |
817 | st2000_ops.to_has_all_memory = 1; | |
818 | st2000_ops.to_has_memory = 1; | |
819 | st2000_ops.to_has_stack = 1; | |
820 | st2000_ops.to_has_registers = 1; | |
821 | st2000_ops.to_has_execution = 1; /* all mem, mem, stack, regs, exec */ | |
822 | st2000_ops.to_sections = 0; | |
823 | st2000_ops.to_sections_end = 0; /* Section pointers */ | |
824 | st2000_ops.to_magic = OPS_MAGIC; /* Always the last thing */ | |
825 | }; | |
c906108c SS |
826 | |
827 | void | |
fba45db2 | 828 | _initialize_remote_st2000 (void) |
c906108c | 829 | { |
c5aa993b | 830 | init_st2000_ops (); |
c906108c SS |
831 | add_target (&st2000_ops); |
832 | add_com ("st2000 <command>", class_obscure, st2000_command, | |
833 | "Send a command to the STDBUG monitor."); | |
834 | add_com ("connect", class_obscure, connect_command, | |
835 | "Connect the terminal directly up to the STDBUG command monitor.\n\ | |
836 | Use <CR>~. or <CR>~^D to break out."); | |
837 | } |