Commit | Line | Data |
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c906108c SS |
1 | /* Remote debugging interface for Array Tech RAID controller.. |
2 | Copyright 90, 91, 92, 93, 94, 1995, 1998 Free Software Foundation, Inc. | |
3 | Contributed by Cygnus Support. Written by Rob Savoye for Cygnus. | |
4 | ||
5 | This module talks to a debug monitor called 'MONITOR', which | |
6 | We communicate with MONITOR via either a direct serial line, or a TCP | |
7 | (or possibly TELNET) stream to a terminal multiplexor, | |
8 | which in turn talks to the target board. | |
9 | ||
c5aa993b JM |
10 | This file is part of GDB. |
11 | ||
12 | This program is free software; you can redistribute it and/or modify | |
13 | it under the terms of the GNU General Public License as published by | |
14 | the Free Software Foundation; either version 2 of the License, or | |
15 | (at your option) any later version. | |
16 | ||
17 | This program is distributed in the hope that it will be useful, | |
18 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
19 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
20 | GNU General Public License for more details. | |
21 | ||
22 | You should have received a copy of the GNU General Public License | |
23 | along with this program; if not, write to the Free Software | |
24 | Foundation, Inc., 59 Temple Place - Suite 330, | |
25 | Boston, MA 02111-1307, USA. | |
c906108c SS |
26 | */ |
27 | ||
28 | #include "defs.h" | |
29 | #include "gdbcore.h" | |
30 | #include "target.h" | |
31 | #include "wait.h" | |
32 | #ifdef ANSI_PROTOTYPES | |
33 | #include <stdarg.h> | |
34 | #else | |
35 | #include <varargs.h> | |
36 | #endif | |
37 | #include <ctype.h> | |
38 | #include <signal.h> | |
39 | #include <sys/types.h> | |
40 | #include "gdb_string.h" | |
41 | #include "command.h" | |
42 | #include "serial.h" | |
43 | #include "monitor.h" | |
44 | #include "remote-utils.h" | |
45 | ||
46 | extern int baud_rate; | |
47 | ||
48 | #define ARRAY_PROMPT ">> " | |
49 | ||
50 | #define SWAP_TARGET_AND_HOST(buffer,len) \ | |
51 | do \ | |
52 | { \ | |
53 | if (TARGET_BYTE_ORDER != HOST_BYTE_ORDER) \ | |
54 | { \ | |
55 | char tmp; \ | |
56 | char *p = (char *)(buffer); \ | |
57 | char *q = ((char *)(buffer)) + len - 1; \ | |
58 | for (; p < q; p++, q--) \ | |
59 | { \ | |
60 | tmp = *q; \ | |
61 | *q = *p; \ | |
62 | *p = tmp; \ | |
63 | } \ | |
64 | } \ | |
65 | } \ | |
66 | while (0) | |
67 | ||
c5aa993b JM |
68 | static void debuglogs PARAMS ((int, char *,...)); |
69 | static void array_open (); | |
70 | static void array_close (); | |
71 | static void array_detach (); | |
72 | static void array_attach (); | |
73 | static void array_resume (); | |
74 | static void array_fetch_register (); | |
75 | static void array_store_register (); | |
76 | static void array_fetch_registers (); | |
77 | static void array_store_registers (); | |
78 | static void array_prepare_to_store (); | |
79 | static void array_files_info (); | |
80 | static void array_kill (); | |
81 | static void array_create_inferior (); | |
82 | static void array_mourn_inferior (); | |
83 | static void make_gdb_packet (); | |
84 | static int array_xfer_memory (); | |
85 | static int array_wait (); | |
86 | static int array_insert_breakpoint (); | |
87 | static int array_remove_breakpoint (); | |
88 | static int tohex (); | |
89 | static int to_hex (); | |
90 | static int from_hex (); | |
91 | static int array_send_packet (); | |
92 | static int array_get_packet (); | |
93 | static unsigned long ascii2hexword (); | |
94 | static void hexword2ascii (); | |
c906108c SS |
95 | |
96 | extern char *version; | |
97 | ||
98 | #define LOG_FILE "monitor.log" | |
99 | #if defined (LOG_FILE) | |
100 | FILE *log_file; | |
101 | #endif | |
102 | ||
103 | static int timeout = 30; | |
104 | /* Having this larger than 400 causes us to be incompatible with m68k-stub.c | |
105 | and i386-stub.c. Normally, no one would notice because it only matters | |
106 | for writing large chunks of memory (e.g. in downloads). Also, this needs | |
107 | to be more than 400 if required to hold the registers (see below, where | |
108 | we round it up based on REGISTER_BYTES). */ | |
109 | #define PBUFSIZ 400 | |
110 | ||
111 | /* | |
112 | * Descriptor for I/O to remote machine. Initialize it to NULL so that | |
113 | * array_open knows that we don't have a file open when the program starts. | |
114 | */ | |
115 | serial_t array_desc = NULL; | |
116 | ||
117 | /* | |
118 | * this array of registers need to match the indexes used by GDB. The | |
119 | * whole reason this exists is cause the various ROM monitors use | |
120 | * different strings than GDB does, and doesn't support all the | |
121 | * registers either. So, typing "info reg sp" becomes a "r30". | |
122 | */ | |
123 | extern char *tmp_mips_processor_type; | |
c5aa993b | 124 | extern int mips_set_processor_type (); |
c906108c | 125 | |
c5aa993b | 126 | static struct target_ops array_ops; |
c906108c | 127 | |
c5aa993b JM |
128 | static void |
129 | init_array_ops (void) | |
c906108c | 130 | { |
c5aa993b JM |
131 | array_ops.to_shortname = "array"; |
132 | array_ops.to_longname = | |
c906108c | 133 | "Debug using the standard GDB remote protocol for the Array Tech target.", |
c5aa993b | 134 | array_ops.to_doc = |
c906108c | 135 | "Debug using the standard GDB remote protocol for the Array Tech target.\n\ |
c5aa993b JM |
136 | Specify the serial device it is connected to (e.g. /dev/ttya)."; |
137 | array_ops.to_open = array_open; | |
138 | array_ops.to_close = array_close; | |
139 | array_ops.to_attach = NULL; | |
140 | array_ops.to_post_attach = NULL; | |
c906108c | 141 | array_ops.to_require_attach = NULL; |
c5aa993b | 142 | array_ops.to_detach = array_detach; |
c906108c | 143 | array_ops.to_require_detach = NULL; |
c5aa993b JM |
144 | array_ops.to_resume = array_resume; |
145 | array_ops.to_wait = array_wait; | |
c906108c | 146 | array_ops.to_post_wait = NULL; |
c5aa993b JM |
147 | array_ops.to_fetch_registers = array_fetch_registers; |
148 | array_ops.to_store_registers = array_store_registers; | |
149 | array_ops.to_prepare_to_store = array_prepare_to_store; | |
150 | array_ops.to_xfer_memory = array_xfer_memory; | |
151 | array_ops.to_files_info = array_files_info; | |
152 | array_ops.to_insert_breakpoint = array_insert_breakpoint; | |
153 | array_ops.to_remove_breakpoint = array_remove_breakpoint; | |
154 | array_ops.to_terminal_init = 0; | |
155 | array_ops.to_terminal_inferior = 0; | |
156 | array_ops.to_terminal_ours_for_output = 0; | |
157 | array_ops.to_terminal_ours = 0; | |
158 | array_ops.to_terminal_info = 0; | |
159 | array_ops.to_kill = array_kill; | |
160 | array_ops.to_load = 0; | |
161 | array_ops.to_lookup_symbol = 0; | |
162 | array_ops.to_create_inferior = array_create_inferior; | |
c906108c SS |
163 | array_ops.to_post_startup_inferior = NULL; |
164 | array_ops.to_acknowledge_created_inferior = NULL; | |
c5aa993b JM |
165 | array_ops.to_clone_and_follow_inferior = NULL; |
166 | array_ops.to_post_follow_inferior_by_clone = NULL; | |
c906108c SS |
167 | array_ops.to_insert_fork_catchpoint = NULL; |
168 | array_ops.to_remove_fork_catchpoint = NULL; | |
169 | array_ops.to_insert_vfork_catchpoint = NULL; | |
c5aa993b | 170 | array_ops.to_remove_vfork_catchpoint = NULL; |
c906108c | 171 | array_ops.to_has_forked = NULL; |
c5aa993b JM |
172 | array_ops.to_has_vforked = NULL; |
173 | array_ops.to_can_follow_vfork_prior_to_exec = NULL; | |
c906108c SS |
174 | array_ops.to_post_follow_vfork = NULL; |
175 | array_ops.to_insert_exec_catchpoint = NULL; | |
176 | array_ops.to_remove_exec_catchpoint = NULL; | |
177 | array_ops.to_has_execd = NULL; | |
178 | array_ops.to_reported_exec_events_per_exec_call = NULL; | |
179 | array_ops.to_has_exited = NULL; | |
c5aa993b JM |
180 | array_ops.to_mourn_inferior = array_mourn_inferior; |
181 | array_ops.to_can_run = 0; | |
182 | array_ops.to_notice_signals = 0; | |
183 | array_ops.to_thread_alive = 0; | |
184 | array_ops.to_stop = 0; | |
c906108c | 185 | array_ops.to_pid_to_exec_file = NULL; |
c5aa993b JM |
186 | array_ops.to_core_file_to_sym_file = NULL; |
187 | array_ops.to_stratum = process_stratum; | |
188 | array_ops.DONT_USE = 0; | |
189 | array_ops.to_has_all_memory = 1; | |
190 | array_ops.to_has_memory = 1; | |
191 | array_ops.to_has_stack = 1; | |
192 | array_ops.to_has_registers = 1; | |
193 | array_ops.to_has_execution = 1; | |
194 | array_ops.to_sections = 0; | |
195 | array_ops.to_sections_end = 0; | |
196 | array_ops.to_magic = OPS_MAGIC; | |
c906108c SS |
197 | }; |
198 | ||
199 | /* | |
200 | * printf_monitor -- send data to monitor. Works just like printf. | |
201 | */ | |
202 | static void | |
203 | #ifdef ANSI_PROTOTYPES | |
c5aa993b | 204 | printf_monitor (char *pattern,...) |
c906108c | 205 | #else |
c5aa993b | 206 | printf_monitor (va_alist) |
c906108c SS |
207 | va_dcl |
208 | #endif | |
209 | { | |
210 | va_list args; | |
211 | char buf[PBUFSIZ]; | |
212 | int i; | |
213 | ||
214 | #ifdef ANSI_PROTOTYPES | |
c5aa993b | 215 | va_start (args, pattern); |
c906108c SS |
216 | #else |
217 | char *pattern; | |
c5aa993b JM |
218 | va_start (args); |
219 | pattern = va_arg (args, char *); | |
c906108c SS |
220 | #endif |
221 | ||
c5aa993b | 222 | vsprintf (buf, pattern, args); |
c906108c SS |
223 | |
224 | debuglogs (1, "printf_monitor(), Sending: \"%s\".", buf); | |
225 | ||
c5aa993b | 226 | if (strlen (buf) > PBUFSIZ) |
c906108c | 227 | error ("printf_monitor(): string too long"); |
c5aa993b JM |
228 | if (SERIAL_WRITE (array_desc, buf, strlen (buf))) |
229 | fprintf (stderr, "SERIAL_WRITE failed: %s\n", safe_strerror (errno)); | |
c906108c SS |
230 | } |
231 | /* | |
232 | * write_monitor -- send raw data to monitor. | |
233 | */ | |
234 | static void | |
c5aa993b | 235 | write_monitor (data, len) |
c906108c SS |
236 | char data[]; |
237 | int len; | |
238 | { | |
c5aa993b JM |
239 | if (SERIAL_WRITE (array_desc, data, len)) |
240 | fprintf (stderr, "SERIAL_WRITE failed: %s\n", safe_strerror (errno)); | |
241 | ||
242 | *(data + len + 1) = '\0'; | |
c906108c SS |
243 | debuglogs (1, "write_monitor(), Sending: \"%s\".", data); |
244 | ||
245 | } | |
246 | ||
247 | /* | |
248 | * debuglogs -- deal with debugging info to multiple sources. This takes | |
c5aa993b JM |
249 | * two real args, the first one is the level to be compared against |
250 | * the sr_get_debug() value, the second arg is a printf buffer and args | |
251 | * to be formatted and printed. A CR is added after each string is printed. | |
c906108c SS |
252 | */ |
253 | static void | |
254 | #ifdef ANSI_PROTOTYPES | |
c5aa993b | 255 | debuglogs (int level, char *pattern,...) |
c906108c | 256 | #else |
c5aa993b | 257 | debuglogs (va_alist) |
c906108c SS |
258 | va_dcl |
259 | #endif | |
260 | { | |
261 | va_list args; | |
262 | char *p; | |
263 | unsigned char buf[PBUFSIZ]; | |
264 | char newbuf[PBUFSIZ]; | |
265 | int i; | |
266 | ||
267 | #ifdef ANSI_PROTOTYPES | |
c5aa993b | 268 | va_start (args, pattern); |
c906108c SS |
269 | #else |
270 | char *pattern; | |
271 | int level; | |
c5aa993b JM |
272 | va_start (args); |
273 | level = va_arg (args, int); /* get the debug level */ | |
274 | pattern = va_arg (args, char *); /* get the printf style pattern */ | |
c906108c SS |
275 | #endif |
276 | ||
c5aa993b JM |
277 | if ((level < 0) || (level > 100)) |
278 | { | |
279 | error ("Bad argument passed to debuglogs(), needs debug level"); | |
280 | return; | |
281 | } | |
282 | ||
283 | vsprintf (buf, pattern, args); /* format the string */ | |
284 | ||
c906108c SS |
285 | /* convert some characters so it'll look right in the log */ |
286 | p = newbuf; | |
c5aa993b JM |
287 | for (i = 0; buf[i] != '\0'; i++) |
288 | { | |
289 | if (i > PBUFSIZ) | |
290 | error ("Debug message too long"); | |
291 | switch (buf[i]) | |
292 | { | |
293 | case '\n': /* newlines */ | |
294 | *p++ = '\\'; | |
295 | *p++ = 'n'; | |
296 | continue; | |
297 | case '\r': /* carriage returns */ | |
298 | *p++ = '\\'; | |
299 | *p++ = 'r'; | |
300 | continue; | |
301 | case '\033': /* escape */ | |
302 | *p++ = '\\'; | |
303 | *p++ = 'e'; | |
304 | continue; | |
305 | case '\t': /* tab */ | |
306 | *p++ = '\\'; | |
307 | *p++ = 't'; | |
308 | continue; | |
309 | case '\b': /* backspace */ | |
310 | *p++ = '\\'; | |
311 | *p++ = 'b'; | |
312 | continue; | |
313 | default: /* no change */ | |
314 | *p++ = buf[i]; | |
315 | } | |
c906108c | 316 | |
c5aa993b JM |
317 | if (buf[i] < 26) |
318 | { /* modify control characters */ | |
319 | *p++ = '^'; | |
320 | *p++ = buf[i] + 'A'; | |
321 | continue; | |
322 | } | |
323 | if (buf[i] >= 128) | |
324 | { /* modify control characters */ | |
325 | *p++ = '!'; | |
326 | *p++ = buf[i] + 'A'; | |
327 | continue; | |
328 | } | |
c906108c | 329 | } |
c5aa993b | 330 | *p = '\0'; /* terminate the string */ |
c906108c | 331 | |
c5aa993b | 332 | if (sr_get_debug () > level) |
c906108c SS |
333 | printf_unfiltered ("%s\n", newbuf); |
334 | ||
c5aa993b JM |
335 | #ifdef LOG_FILE /* write to the monitor log */ |
336 | if (log_file != 0x0) | |
337 | { | |
338 | fputs (newbuf, log_file); | |
339 | fputc ('\n', log_file); | |
340 | fflush (log_file); | |
341 | } | |
c906108c SS |
342 | #endif |
343 | } | |
344 | ||
345 | /* readchar -- read a character from the remote system, doing all the fancy | |
c5aa993b | 346 | * timeout stuff. |
c906108c SS |
347 | */ |
348 | static int | |
c5aa993b | 349 | readchar (timeout) |
c906108c SS |
350 | int timeout; |
351 | { | |
352 | int c; | |
353 | ||
c5aa993b | 354 | c = SERIAL_READCHAR (array_desc, abs (timeout)); |
c906108c | 355 | |
c5aa993b JM |
356 | if (sr_get_debug () > 5) |
357 | { | |
358 | putchar (c & 0x7f); | |
359 | debuglogs (5, "readchar: timeout = %d\n", timeout); | |
360 | } | |
c906108c SS |
361 | |
362 | #ifdef LOG_FILE | |
363 | if (isascii (c)) | |
c5aa993b | 364 | putc (c & 0x7f, log_file); |
c906108c SS |
365 | #endif |
366 | ||
367 | if (c >= 0) | |
368 | return c & 0x7f; | |
369 | ||
c5aa993b JM |
370 | if (c == SERIAL_TIMEOUT) |
371 | { | |
372 | if (timeout <= 0) | |
373 | return c; /* Polls shouldn't generate timeout errors */ | |
374 | error ("Timeout reading from remote system."); | |
c906108c SS |
375 | #ifdef LOG_FILE |
376 | fputs ("ERROR: Timeout reading from remote system", log_file); | |
377 | #endif | |
c5aa993b JM |
378 | } |
379 | perror_with_name ("readchar"); | |
c906108c SS |
380 | } |
381 | ||
382 | /* | |
383 | * expect -- scan input from the remote system, until STRING is found. | |
c5aa993b JM |
384 | * If DISCARD is non-zero, then discard non-matching input, else print |
385 | * it out. Let the user break out immediately. | |
c906108c SS |
386 | */ |
387 | static void | |
388 | expect (string, discard) | |
389 | char *string; | |
390 | int discard; | |
391 | { | |
392 | char *p = string; | |
393 | int c; | |
394 | ||
395 | ||
396 | debuglogs (1, "Expecting \"%s\".", string); | |
397 | ||
398 | immediate_quit = 1; | |
c5aa993b JM |
399 | while (1) |
400 | { | |
401 | c = readchar (timeout); | |
402 | if (!isascii (c)) | |
403 | continue; | |
404 | if (c == *p++) | |
405 | { | |
406 | if (*p == '\0') | |
407 | { | |
408 | immediate_quit = 0; | |
409 | debuglogs (4, "Matched"); | |
410 | return; | |
411 | } | |
412 | } | |
413 | else | |
414 | { | |
415 | if (!discard) | |
416 | { | |
417 | fputc_unfiltered (c, gdb_stdout); | |
418 | } | |
419 | p = string; | |
420 | } | |
c906108c | 421 | } |
c906108c SS |
422 | } |
423 | ||
424 | /* Keep discarding input until we see the MONITOR array_cmds->prompt. | |
425 | ||
426 | The convention for dealing with the expect_prompt is that you | |
427 | o give your command | |
428 | o *then* wait for the expect_prompt. | |
429 | ||
430 | Thus the last thing that a procedure does with the serial line | |
431 | will be an expect_prompt(). Exception: array_resume does not | |
432 | wait for the expect_prompt, because the terminal is being handed over | |
433 | to the inferior. However, the next thing which happens after that | |
434 | is a array_wait which does wait for the expect_prompt. | |
435 | Note that this includes abnormal exit, e.g. error(). This is | |
436 | necessary to prevent getting into states from which we can't | |
437 | recover. */ | |
438 | static void | |
c5aa993b | 439 | expect_prompt (discard) |
c906108c SS |
440 | int discard; |
441 | { | |
442 | expect (ARRAY_PROMPT, discard); | |
443 | } | |
444 | ||
445 | /* | |
446 | * junk -- ignore junk characters. Returns a 1 if junk, 0 otherwise | |
447 | */ | |
448 | static int | |
c5aa993b | 449 | junk (ch) |
c906108c SS |
450 | char ch; |
451 | { | |
c5aa993b JM |
452 | switch (ch) |
453 | { | |
454 | case '\0': | |
455 | case ' ': | |
456 | case '-': | |
457 | case '\t': | |
458 | case '\r': | |
459 | case '\n': | |
460 | if (sr_get_debug () > 5) | |
461 | debuglogs (5, "Ignoring \'%c\'.", ch); | |
462 | return 1; | |
463 | default: | |
464 | if (sr_get_debug () > 5) | |
465 | debuglogs (5, "Accepting \'%c\'.", ch); | |
466 | return 0; | |
467 | } | |
c906108c SS |
468 | } |
469 | ||
470 | /* | |
471 | * get_hex_digit -- Get a hex digit from the remote system & return its value. | |
c5aa993b | 472 | * If ignore is nonzero, ignore spaces, newline & tabs. |
c906108c SS |
473 | */ |
474 | static int | |
c5aa993b | 475 | get_hex_digit (ignore) |
c906108c SS |
476 | int ignore; |
477 | { | |
478 | static int ch; | |
c5aa993b JM |
479 | while (1) |
480 | { | |
481 | ch = readchar (timeout); | |
482 | if (junk (ch)) | |
483 | continue; | |
484 | if (sr_get_debug () > 4) | |
485 | { | |
486 | debuglogs (4, "get_hex_digit() got a 0x%x(%c)", ch, ch); | |
487 | } | |
488 | else | |
489 | { | |
490 | #ifdef LOG_FILE /* write to the monitor log */ | |
491 | if (log_file != 0x0) | |
492 | { | |
493 | fputs ("get_hex_digit() got a 0x", log_file); | |
494 | fputc (ch, log_file); | |
495 | fputc ('\n', log_file); | |
496 | fflush (log_file); | |
497 | } | |
c906108c | 498 | #endif |
c5aa993b | 499 | } |
c906108c | 500 | |
c5aa993b JM |
501 | if (ch >= '0' && ch <= '9') |
502 | return ch - '0'; | |
503 | else if (ch >= 'A' && ch <= 'F') | |
504 | return ch - 'A' + 10; | |
505 | else if (ch >= 'a' && ch <= 'f') | |
506 | return ch - 'a' + 10; | |
507 | else if (ch == ' ' && ignore) | |
508 | ; | |
509 | else | |
510 | { | |
511 | expect_prompt (1); | |
512 | debuglogs (4, "Invalid hex digit from remote system. (0x%x)", ch); | |
513 | error ("Invalid hex digit from remote system. (0x%x)", ch); | |
514 | } | |
c906108c | 515 | } |
c906108c SS |
516 | } |
517 | ||
518 | /* get_hex_byte -- Get a byte from monitor and put it in *BYT. | |
c5aa993b | 519 | * Accept any number leading spaces. |
c906108c SS |
520 | */ |
521 | static void | |
522 | get_hex_byte (byt) | |
523 | char *byt; | |
524 | { | |
525 | int val; | |
526 | ||
527 | val = get_hex_digit (1) << 4; | |
528 | debuglogs (4, "get_hex_byte() -- Read first nibble 0x%x", val); | |
c5aa993b | 529 | |
c906108c SS |
530 | val |= get_hex_digit (0); |
531 | debuglogs (4, "get_hex_byte() -- Read second nibble 0x%x", val); | |
532 | *byt = val; | |
c5aa993b | 533 | |
c906108c SS |
534 | debuglogs (4, "get_hex_byte() -- Read a 0x%x", val); |
535 | } | |
536 | ||
537 | /* | |
538 | * get_hex_word -- Get N 32-bit words from remote, each preceded by a space, | |
c5aa993b | 539 | * and put them in registers starting at REGNO. |
c906108c SS |
540 | */ |
541 | static int | |
542 | get_hex_word () | |
543 | { | |
544 | long val, newval; | |
545 | int i; | |
546 | ||
547 | val = 0; | |
548 | ||
549 | #if 0 | |
c5aa993b JM |
550 | if (HOST_BYTE_ORDER == BIG_ENDIAN) |
551 | { | |
c906108c | 552 | #endif |
c5aa993b JM |
553 | for (i = 0; i < 8; i++) |
554 | val = (val << 4) + get_hex_digit (i == 0); | |
c906108c | 555 | #if 0 |
c5aa993b JM |
556 | } |
557 | else | |
558 | { | |
559 | for (i = 7; i >= 0; i--) | |
560 | val = (val << 4) + get_hex_digit (i == 0); | |
561 | } | |
c906108c SS |
562 | #endif |
563 | ||
564 | debuglogs (4, "get_hex_word() got a 0x%x for a %s host.", val, (HOST_BYTE_ORDER == BIG_ENDIAN) ? "big endian" : "little endian"); | |
565 | ||
566 | return val; | |
567 | } | |
568 | ||
569 | /* This is called not only when we first attach, but also when the | |
570 | user types "run" after having attached. */ | |
571 | static void | |
572 | array_create_inferior (execfile, args, env) | |
573 | char *execfile; | |
574 | char *args; | |
575 | char **env; | |
576 | { | |
577 | int entry_pt; | |
578 | ||
579 | if (args && *args) | |
c5aa993b | 580 | error ("Can't pass arguments to remote MONITOR process"); |
c906108c SS |
581 | |
582 | if (execfile == 0 || exec_bfd == 0) | |
c5aa993b | 583 | error ("No executable file specified"); |
c906108c SS |
584 | |
585 | entry_pt = (int) bfd_get_start_address (exec_bfd); | |
586 | ||
587 | /* The "process" (board) is already stopped awaiting our commands, and | |
588 | the program is already downloaded. We just set its PC and go. */ | |
589 | ||
590 | clear_proceed_status (); | |
591 | ||
592 | /* Tell wait_for_inferior that we've started a new process. */ | |
593 | init_wait_for_inferior (); | |
594 | ||
595 | /* Set up the "saved terminal modes" of the inferior | |
596 | based on what modes we are starting it with. */ | |
597 | target_terminal_init (); | |
598 | ||
599 | /* Install inferior's terminal modes. */ | |
600 | target_terminal_inferior (); | |
601 | ||
602 | /* insert_step_breakpoint (); FIXME, do we need this? */ | |
603 | ||
604 | /* Let 'er rip... */ | |
c5aa993b | 605 | proceed ((CORE_ADDR) entry_pt, TARGET_SIGNAL_DEFAULT, 0); |
c906108c SS |
606 | } |
607 | ||
608 | /* | |
609 | * array_open -- open a connection to a remote debugger. | |
c5aa993b | 610 | * NAME is the filename used for communication. |
c906108c SS |
611 | */ |
612 | static int baudrate = 9600; | |
613 | static char dev_name[100]; | |
614 | ||
615 | static void | |
c5aa993b | 616 | array_open (args, name, from_tty) |
c906108c SS |
617 | char *args; |
618 | char *name; | |
619 | int from_tty; | |
620 | { | |
621 | char packet[PBUFSIZ]; | |
622 | ||
623 | if (args == NULL) | |
624 | error ("Use `target %s DEVICE-NAME' to use a serial port, or \n\ | |
625 | `target %s HOST-NAME:PORT-NUMBER' to use a network connection.", name, name); | |
626 | ||
627 | /* if (is_open) */ | |
c5aa993b | 628 | array_close (0); |
c906108c SS |
629 | |
630 | target_preopen (from_tty); | |
631 | unpush_target (&array_ops); | |
632 | ||
633 | tmp_mips_processor_type = "lsi33k"; /* change the default from r3051 */ | |
634 | mips_set_processor_type_command ("lsi33k", 0); | |
635 | ||
c5aa993b JM |
636 | strcpy (dev_name, args); |
637 | array_desc = SERIAL_OPEN (dev_name); | |
c906108c SS |
638 | |
639 | if (array_desc == NULL) | |
c5aa993b | 640 | perror_with_name (dev_name); |
c906108c | 641 | |
c5aa993b JM |
642 | if (baud_rate != -1) |
643 | { | |
644 | if (SERIAL_SETBAUDRATE (array_desc, baud_rate)) | |
645 | { | |
646 | SERIAL_CLOSE (array_desc); | |
647 | perror_with_name (name); | |
648 | } | |
c906108c | 649 | } |
c5aa993b JM |
650 | |
651 | SERIAL_RAW (array_desc); | |
c906108c SS |
652 | |
653 | #if defined (LOG_FILE) | |
654 | log_file = fopen (LOG_FILE, "w"); | |
655 | if (log_file == NULL) | |
656 | perror_with_name (LOG_FILE); | |
657 | fprintf (log_file, "GDB %s (%s", version); | |
658 | fprintf (log_file, " --target %s)\n", array_ops.to_shortname); | |
659 | fprintf (log_file, "Remote target %s connected to %s\n\n", array_ops.to_shortname, dev_name); | |
660 | #endif | |
661 | ||
662 | /* see if the target is alive. For a ROM monitor, we can just try to force the | |
663 | expect_prompt to print a few times. For the GDB remote protocol, the application | |
664 | being debugged is sitting at a breakpoint and waiting for GDB to initialize | |
665 | the connection. We force it to give us an empty packet to see if it's alive. | |
c5aa993b JM |
666 | */ |
667 | debuglogs (3, "Trying to ACK the target's debug stub"); | |
668 | /* unless your are on the new hardware, the old board won't initialize | |
669 | because the '@' doesn't flush output like it does on the new ROMS. | |
670 | */ | |
671 | printf_monitor ("@"); /* ask for the last signal */ | |
672 | expect_prompt (1); /* See if we get a expect_prompt */ | |
c906108c | 673 | #ifdef TEST_ARRAY /* skip packet for testing */ |
c5aa993b JM |
674 | make_gdb_packet (packet, "?"); /* ask for a bogus packet */ |
675 | if (array_send_packet (packet) == 0) | |
676 | error ("Couldn't transmit packet\n"); | |
677 | printf_monitor ("@\n"); /* force it to flush stdout */ | |
678 | expect_prompt (1); /* See if we get a expect_prompt */ | |
c906108c SS |
679 | #endif |
680 | push_target (&array_ops); | |
681 | if (from_tty) | |
c5aa993b | 682 | printf ("Remote target %s connected to %s\n", array_ops.to_shortname, dev_name); |
c906108c SS |
683 | } |
684 | ||
685 | /* | |
686 | * array_close -- Close out all files and local state before this | |
c5aa993b | 687 | * target loses control. |
c906108c SS |
688 | */ |
689 | ||
690 | static void | |
691 | array_close (quitting) | |
692 | int quitting; | |
693 | { | |
c5aa993b | 694 | SERIAL_CLOSE (array_desc); |
c906108c SS |
695 | array_desc = NULL; |
696 | ||
697 | debuglogs (1, "array_close (quitting=%d)", quitting); | |
698 | ||
699 | #if defined (LOG_FILE) | |
c5aa993b JM |
700 | if (log_file) |
701 | { | |
702 | if (ferror (log_file)) | |
703 | printf_filtered ("Error writing log file.\n"); | |
704 | if (fclose (log_file) != 0) | |
705 | printf_filtered ("Error closing log file.\n"); | |
706 | } | |
c906108c SS |
707 | #endif |
708 | } | |
709 | ||
710 | /* | |
711 | * array_detach -- terminate the open connection to the remote | |
c5aa993b JM |
712 | * debugger. Use this when you want to detach and do something |
713 | * else with your gdb. | |
c906108c SS |
714 | */ |
715 | static void | |
716 | array_detach (from_tty) | |
717 | int from_tty; | |
718 | { | |
719 | ||
720 | debuglogs (1, "array_detach ()"); | |
721 | ||
c5aa993b | 722 | pop_target (); /* calls array_close to do the real work */ |
c906108c SS |
723 | if (from_tty) |
724 | printf ("Ending remote %s debugging\n", target_shortname); | |
725 | } | |
726 | ||
727 | /* | |
728 | * array_attach -- attach GDB to the target. | |
729 | */ | |
730 | static void | |
731 | array_attach (args, from_tty) | |
732 | char *args; | |
733 | int from_tty; | |
734 | { | |
735 | if (from_tty) | |
736 | printf ("Starting remote %s debugging\n", target_shortname); | |
c5aa993b | 737 | |
c906108c | 738 | debuglogs (1, "array_attach (args=%s)", args); |
c5aa993b | 739 | |
c906108c SS |
740 | printf_monitor ("go %x\n"); |
741 | /* swallow the echo. */ | |
742 | expect ("go %x\n", 1); | |
743 | } | |
c5aa993b | 744 | |
c906108c SS |
745 | /* |
746 | * array_resume -- Tell the remote machine to resume. | |
747 | */ | |
748 | static void | |
749 | array_resume (pid, step, sig) | |
750 | int pid, step; | |
751 | enum target_signal sig; | |
752 | { | |
753 | debuglogs (1, "array_resume (step=%d, sig=%d)", step, sig); | |
754 | ||
c5aa993b JM |
755 | if (step) |
756 | { | |
757 | printf_monitor ("s\n"); | |
758 | } | |
759 | else | |
760 | { | |
761 | printf_monitor ("go\n"); | |
762 | } | |
c906108c SS |
763 | } |
764 | ||
765 | #define TMPBUFSIZ 5 | |
766 | ||
767 | /* | |
768 | * array_wait -- Wait until the remote machine stops, then return, | |
769 | * storing status in status just as `wait' would. | |
770 | */ | |
771 | static int | |
772 | array_wait (pid, status) | |
773 | int pid; | |
774 | struct target_waitstatus *status; | |
775 | { | |
776 | int old_timeout = timeout; | |
777 | int result, i; | |
778 | char c; | |
779 | serial_t tty_desc; | |
780 | serial_ttystate ttystate; | |
781 | ||
c5aa993b JM |
782 | debuglogs (1, "array_wait (), printing extraneous text."); |
783 | ||
c906108c SS |
784 | status->kind = TARGET_WAITKIND_EXITED; |
785 | status->value.integer = 0; | |
786 | ||
c5aa993b JM |
787 | timeout = 0; /* Don't time out -- user program is running. */ |
788 | ||
c906108c SS |
789 | #if !defined(__GO32__) && !defined(__MSDOS__) && !defined(_WIN32) |
790 | tty_desc = SERIAL_FDOPEN (0); | |
791 | ttystate = SERIAL_GET_TTY_STATE (tty_desc); | |
792 | SERIAL_RAW (tty_desc); | |
793 | ||
794 | i = 0; | |
795 | /* poll on the serial port and the keyboard. */ | |
c5aa993b JM |
796 | while (1) |
797 | { | |
798 | c = readchar (timeout); | |
799 | if (c > 0) | |
800 | { | |
801 | if (c == *(ARRAY_PROMPT + i)) | |
802 | { | |
803 | if (++i >= strlen (ARRAY_PROMPT)) | |
804 | { /* matched the prompt */ | |
805 | debuglogs (4, "array_wait(), got the expect_prompt."); | |
806 | break; | |
807 | } | |
808 | } | |
809 | else | |
810 | { /* not the prompt */ | |
811 | i = 0; | |
812 | } | |
813 | fputc_unfiltered (c, gdb_stdout); | |
814 | gdb_flush (gdb_stdout); | |
c906108c | 815 | } |
c5aa993b JM |
816 | c = SERIAL_READCHAR (tty_desc, timeout); |
817 | if (c > 0) | |
818 | { | |
819 | SERIAL_WRITE (array_desc, &c, 1); | |
820 | /* do this so it looks like there's keyboard echo */ | |
821 | if (c == 3) /* exit on Control-C */ | |
822 | break; | |
c906108c | 823 | #if 0 |
c5aa993b JM |
824 | fputc_unfiltered (c, gdb_stdout); |
825 | gdb_flush (gdb_stdout); | |
c906108c | 826 | #endif |
c5aa993b | 827 | } |
c906108c | 828 | } |
c906108c SS |
829 | SERIAL_SET_TTY_STATE (tty_desc, ttystate); |
830 | #else | |
c5aa993b | 831 | expect_prompt (1); |
c906108c SS |
832 | debuglogs (4, "array_wait(), got the expect_prompt."); |
833 | #endif | |
834 | ||
835 | status->kind = TARGET_WAITKIND_STOPPED; | |
836 | status->value.sig = TARGET_SIGNAL_TRAP; | |
837 | ||
838 | timeout = old_timeout; | |
839 | ||
840 | return 0; | |
841 | } | |
842 | ||
843 | /* | |
844 | * array_fetch_registers -- read the remote registers into the | |
c5aa993b | 845 | * block regs. |
c906108c SS |
846 | */ |
847 | static void | |
848 | array_fetch_registers (ignored) | |
849 | int ignored; | |
850 | { | |
851 | int regno, i; | |
852 | char *p; | |
853 | unsigned char packet[PBUFSIZ]; | |
854 | char regs[REGISTER_BYTES]; | |
855 | ||
856 | debuglogs (1, "array_fetch_registers (ignored=%d)\n", ignored); | |
857 | ||
858 | memset (packet, 0, PBUFSIZ); | |
859 | /* Unimplemented registers read as all bits zero. */ | |
860 | memset (regs, 0, REGISTER_BYTES); | |
861 | make_gdb_packet (packet, "g"); | |
862 | if (array_send_packet (packet) == 0) | |
863 | error ("Couldn't transmit packet\n"); | |
864 | if (array_get_packet (packet) == 0) | |
c5aa993b | 865 | error ("Couldn't receive packet\n"); |
c906108c SS |
866 | /* FIXME: read bytes from packet */ |
867 | debuglogs (4, "array_fetch_registers: Got a \"%s\" back\n", packet); | |
c5aa993b JM |
868 | for (regno = 0; regno <= PC_REGNUM + 4; regno++) |
869 | { | |
870 | /* supply register stores in target byte order, so swap here */ | |
871 | /* FIXME: convert from ASCII hex to raw bytes */ | |
872 | i = ascii2hexword (packet + (regno * 8)); | |
873 | debuglogs (5, "Adding register %d = %x\n", regno, i); | |
874 | SWAP_TARGET_AND_HOST (&i, 4); | |
875 | supply_register (regno, (char *) &i); | |
876 | } | |
c906108c SS |
877 | } |
878 | ||
879 | /* | |
880 | * This is unused by targets like this one that use a | |
881 | * protocol based on GDB's remote protocol. | |
882 | */ | |
883 | static void | |
884 | array_fetch_register (ignored) | |
885 | int ignored; | |
886 | { | |
887 | array_fetch_registers (); | |
888 | } | |
889 | ||
890 | /* | |
891 | * Get all the registers from the targets. They come back in a large array. | |
892 | */ | |
893 | static void | |
894 | array_store_registers (ignored) | |
895 | int ignored; | |
896 | { | |
897 | int regno; | |
898 | unsigned long i; | |
899 | char packet[PBUFSIZ]; | |
900 | char buf[PBUFSIZ]; | |
901 | char num[9]; | |
c5aa993b | 902 | |
c906108c SS |
903 | debuglogs (1, "array_store_registers()"); |
904 | ||
905 | memset (packet, 0, PBUFSIZ); | |
906 | memset (buf, 0, PBUFSIZ); | |
907 | buf[0] = 'G'; | |
908 | ||
909 | /* Unimplemented registers read as all bits zero. */ | |
910 | /* FIXME: read bytes from packet */ | |
c5aa993b JM |
911 | for (regno = 0; regno < 41; regno++) |
912 | { /* FIXME */ | |
913 | /* supply register stores in target byte order, so swap here */ | |
914 | /* FIXME: convert from ASCII hex to raw bytes */ | |
915 | i = (unsigned long) read_register (regno); | |
916 | hexword2ascii (num, i); | |
917 | strcpy (buf + (regno * 8) + 1, num); | |
918 | } | |
c906108c SS |
919 | *(buf + (regno * 8) + 2) = 0; |
920 | make_gdb_packet (packet, buf); | |
921 | if (array_send_packet (packet) == 0) | |
922 | error ("Couldn't transmit packet\n"); | |
923 | if (array_get_packet (packet) == 0) | |
c5aa993b JM |
924 | error ("Couldn't receive packet\n"); |
925 | ||
c906108c SS |
926 | registers_changed (); |
927 | } | |
928 | ||
929 | /* | |
930 | * This is unused by targets like this one that use a | |
931 | * protocol based on GDB's remote protocol. | |
932 | */ | |
933 | static void | |
934 | array_store_register (ignored) | |
935 | int ignored; | |
936 | { | |
937 | array_store_registers (); | |
938 | } | |
939 | ||
940 | /* Get ready to modify the registers array. On machines which store | |
941 | individual registers, this doesn't need to do anything. On machines | |
942 | which store all the registers in one fell swoop, this makes sure | |
943 | that registers contains all the registers from the program being | |
944 | debugged. */ | |
945 | ||
946 | static void | |
947 | array_prepare_to_store () | |
948 | { | |
949 | /* Do nothing, since we can store individual regs */ | |
950 | } | |
951 | ||
952 | static void | |
953 | array_files_info () | |
954 | { | |
955 | printf ("\tAttached to %s at %d baud.\n", | |
956 | dev_name, baudrate); | |
957 | } | |
958 | ||
959 | /* | |
960 | * array_write_inferior_memory -- Copy LEN bytes of data from debugger | |
c5aa993b | 961 | * memory at MYADDR to inferior's memory at MEMADDR. Returns length moved. |
c906108c SS |
962 | */ |
963 | static int | |
964 | array_write_inferior_memory (memaddr, myaddr, len) | |
965 | CORE_ADDR memaddr; | |
966 | unsigned char *myaddr; | |
967 | int len; | |
968 | { | |
969 | unsigned long i; | |
970 | int j; | |
971 | char packet[PBUFSIZ]; | |
972 | char buf[PBUFSIZ]; | |
973 | char num[9]; | |
974 | char *p; | |
c5aa993b | 975 | |
c906108c | 976 | debuglogs (1, "array_write_inferior_memory (memaddr=0x%x, myaddr=0x%x, len=%d)", memaddr, myaddr, len); |
c5aa993b | 977 | memset (buf, '\0', PBUFSIZ); /* this also sets the string terminator */ |
c906108c SS |
978 | p = buf; |
979 | ||
c5aa993b | 980 | *p++ = 'M'; /* The command to write memory */ |
c906108c | 981 | hexword2ascii (num, memaddr); /* convert the address */ |
c5aa993b | 982 | strcpy (p, num); /* copy the address */ |
c906108c | 983 | p += 8; |
c5aa993b JM |
984 | *p++ = ','; /* add comma delimeter */ |
985 | hexword2ascii (num, len); /* Get the length as a 4 digit number */ | |
c906108c SS |
986 | *p++ = num[4]; |
987 | *p++ = num[5]; | |
988 | *p++ = num[6]; | |
989 | *p++ = num[7]; | |
c5aa993b JM |
990 | *p++ = ':'; /* add the colon delimeter */ |
991 | for (j = 0; j < len; j++) | |
992 | { /* copy the data in after converting it */ | |
993 | *p++ = tohex ((myaddr[j] >> 4) & 0xf); | |
994 | *p++ = tohex (myaddr[j] & 0xf); | |
995 | } | |
996 | ||
c906108c SS |
997 | make_gdb_packet (packet, buf); |
998 | if (array_send_packet (packet) == 0) | |
999 | error ("Couldn't transmit packet\n"); | |
1000 | if (array_get_packet (packet) == 0) | |
c5aa993b | 1001 | error ("Couldn't receive packet\n"); |
c906108c SS |
1002 | |
1003 | return len; | |
1004 | } | |
1005 | ||
1006 | /* | |
1007 | * array_read_inferior_memory -- read LEN bytes from inferior memory | |
c5aa993b JM |
1008 | * at MEMADDR. Put the result at debugger address MYADDR. Returns |
1009 | * length moved. | |
c906108c SS |
1010 | */ |
1011 | static int | |
c5aa993b | 1012 | array_read_inferior_memory (memaddr, myaddr, len) |
c906108c SS |
1013 | CORE_ADDR memaddr; |
1014 | char *myaddr; | |
1015 | int len; | |
1016 | { | |
1017 | int j; | |
1018 | char buf[20]; | |
1019 | char packet[PBUFSIZ]; | |
1020 | int count; /* Number of bytes read so far. */ | |
1021 | unsigned long startaddr; /* Starting address of this pass. */ | |
1022 | int len_this_pass; /* Number of bytes to read in this pass. */ | |
1023 | ||
1024 | debuglogs (1, "array_read_inferior_memory (memaddr=0x%x, myaddr=0x%x, len=%d)", memaddr, myaddr, len); | |
1025 | ||
1026 | /* Note that this code works correctly if startaddr is just less | |
1027 | than UINT_MAX (well, really CORE_ADDR_MAX if there was such a | |
1028 | thing). That is, something like | |
1029 | array_read_bytes (CORE_ADDR_MAX - 4, foo, 4) | |
1030 | works--it never adds len To memaddr and gets 0. */ | |
1031 | /* However, something like | |
1032 | array_read_bytes (CORE_ADDR_MAX - 3, foo, 4) | |
1033 | doesn't need to work. Detect it and give up if there's an attempt | |
1034 | to do that. */ | |
c5aa993b JM |
1035 | if (((memaddr - 1) + len) < memaddr) |
1036 | { | |
1037 | errno = EIO; | |
1038 | return 0; | |
1039 | } | |
1040 | ||
c906108c SS |
1041 | for (count = 0, startaddr = memaddr; count < len; startaddr += len_this_pass) |
1042 | { | |
1043 | /* Try to align to 16 byte boundry (why?) */ | |
1044 | len_this_pass = 16; | |
1045 | if ((startaddr % 16) != 0) | |
1046 | { | |
1047 | len_this_pass -= startaddr % 16; | |
1048 | } | |
1049 | /* Only transfer bytes we need */ | |
1050 | if (len_this_pass > (len - count)) | |
1051 | { | |
1052 | len_this_pass = (len - count); | |
1053 | } | |
1054 | /* Fetch the bytes */ | |
1055 | debuglogs (3, "read %d bytes from inferior address %x", len_this_pass, | |
1056 | startaddr); | |
1057 | sprintf (buf, "m%08x,%04x", startaddr, len_this_pass); | |
1058 | make_gdb_packet (packet, buf); | |
1059 | if (array_send_packet (packet) == 0) | |
1060 | { | |
1061 | error ("Couldn't transmit packet\n"); | |
1062 | } | |
1063 | if (array_get_packet (packet) == 0) | |
1064 | { | |
c5aa993b | 1065 | error ("Couldn't receive packet\n"); |
c906108c SS |
1066 | } |
1067 | if (*packet == 0) | |
1068 | { | |
1069 | error ("Got no data in the GDB packet\n"); | |
1070 | } | |
1071 | /* Pick packet apart and xfer bytes to myaddr */ | |
1072 | debuglogs (4, "array_read_inferior_memory: Got a \"%s\" back\n", packet); | |
c5aa993b | 1073 | for (j = 0; j < len_this_pass; j++) |
c906108c SS |
1074 | { |
1075 | /* extract the byte values */ | |
c5aa993b JM |
1076 | myaddr[count++] = from_hex (*(packet + (j * 2))) * 16 + from_hex (*(packet + (j * 2) + 1)); |
1077 | debuglogs (5, "myaddr[%d] set to %x\n", count - 1, myaddr[count - 1]); | |
c906108c SS |
1078 | } |
1079 | } | |
1080 | return (count); | |
1081 | } | |
1082 | ||
1083 | /* FIXME-someday! merge these two. */ | |
1084 | static int | |
1085 | array_xfer_memory (memaddr, myaddr, len, write, target) | |
1086 | CORE_ADDR memaddr; | |
1087 | char *myaddr; | |
1088 | int len; | |
1089 | int write; | |
c5aa993b | 1090 | struct target_ops *target; /* ignored */ |
c906108c SS |
1091 | { |
1092 | if (write) | |
1093 | return array_write_inferior_memory (memaddr, myaddr, len); | |
1094 | else | |
1095 | return array_read_inferior_memory (memaddr, myaddr, len); | |
1096 | } | |
1097 | ||
1098 | static void | |
1099 | array_kill (args, from_tty) | |
1100 | char *args; | |
1101 | int from_tty; | |
1102 | { | |
c5aa993b | 1103 | return; /* ignore attempts to kill target system */ |
c906108c SS |
1104 | } |
1105 | ||
1106 | /* Clean up when a program exits. | |
1107 | The program actually lives on in the remote processor's RAM, and may be | |
1108 | run again without a download. Don't leave it full of breakpoint | |
1109 | instructions. */ | |
1110 | ||
1111 | static void | |
1112 | array_mourn_inferior () | |
1113 | { | |
1114 | remove_breakpoints (); | |
1115 | generic_mourn_inferior (); /* Do all the proper things now */ | |
1116 | } | |
1117 | ||
1118 | #define MAX_ARRAY_BREAKPOINTS 16 | |
1119 | ||
c5aa993b JM |
1120 | static CORE_ADDR breakaddr[MAX_ARRAY_BREAKPOINTS] = |
1121 | {0}; | |
c906108c SS |
1122 | |
1123 | /* | |
1124 | * array_insert_breakpoint -- add a breakpoint | |
1125 | */ | |
1126 | static int | |
1127 | array_insert_breakpoint (addr, shadow) | |
1128 | CORE_ADDR addr; | |
1129 | char *shadow; | |
1130 | { | |
1131 | int i; | |
1132 | int bp_size = 0; | |
1133 | CORE_ADDR bp_addr = addr; | |
1134 | ||
1135 | debuglogs (1, "array_insert_breakpoint() addr = 0x%x", addr); | |
1136 | BREAKPOINT_FROM_PC (&bp_addr, &bp_size); | |
1137 | ||
c5aa993b JM |
1138 | for (i = 0; i <= MAX_ARRAY_BREAKPOINTS; i++) |
1139 | { | |
1140 | if (breakaddr[i] == 0) | |
1141 | { | |
1142 | breakaddr[i] = addr; | |
1143 | if (sr_get_debug () > 4) | |
1144 | printf ("Breakpoint at %x\n", addr); | |
1145 | array_read_inferior_memory (bp_addr, shadow, bp_size); | |
1146 | printf_monitor ("b 0x%x\n", addr); | |
1147 | expect_prompt (1); | |
1148 | return 0; | |
1149 | } | |
c906108c | 1150 | } |
c906108c | 1151 | |
c5aa993b | 1152 | fprintf (stderr, "Too many breakpoints (> 16) for monitor\n"); |
c906108c SS |
1153 | return 1; |
1154 | } | |
1155 | ||
1156 | /* | |
1157 | * _remove_breakpoint -- Tell the monitor to remove a breakpoint | |
1158 | */ | |
1159 | static int | |
1160 | array_remove_breakpoint (addr, shadow) | |
1161 | CORE_ADDR addr; | |
1162 | char *shadow; | |
1163 | { | |
1164 | int i; | |
1165 | ||
1166 | debuglogs (1, "array_remove_breakpoint() addr = 0x%x", addr); | |
1167 | ||
c5aa993b JM |
1168 | for (i = 0; i < MAX_ARRAY_BREAKPOINTS; i++) |
1169 | { | |
1170 | if (breakaddr[i] == addr) | |
1171 | { | |
1172 | breakaddr[i] = 0; | |
1173 | /* some monitors remove breakpoints based on the address */ | |
1174 | printf_monitor ("bd %x\n", i); | |
1175 | expect_prompt (1); | |
1176 | return 0; | |
1177 | } | |
c906108c | 1178 | } |
c5aa993b | 1179 | fprintf (stderr, "Can't find breakpoint associated with 0x%x\n", addr); |
c906108c SS |
1180 | return 1; |
1181 | } | |
1182 | ||
1183 | static void | |
1184 | array_stop () | |
1185 | { | |
1186 | debuglogs (1, "array_stop()"); | |
c5aa993b JM |
1187 | printf_monitor ("\003"); |
1188 | expect_prompt (1); | |
c906108c SS |
1189 | } |
1190 | ||
1191 | /* | |
1192 | * array_command -- put a command string, in args, out to MONITOR. | |
c5aa993b JM |
1193 | * Output from MONITOR is placed on the users terminal until the |
1194 | * expect_prompt is seen. FIXME | |
c906108c SS |
1195 | */ |
1196 | static void | |
1197 | monitor_command (args, fromtty) | |
c5aa993b JM |
1198 | char *args; |
1199 | int fromtty; | |
c906108c SS |
1200 | { |
1201 | debuglogs (1, "monitor_command (args=%s)", args); | |
1202 | ||
1203 | if (array_desc == NULL) | |
c5aa993b | 1204 | error ("monitor target not open."); |
c906108c SS |
1205 | |
1206 | if (!args) | |
c5aa993b JM |
1207 | error ("Missing command."); |
1208 | ||
c906108c | 1209 | printf_monitor ("%s\n", args); |
c5aa993b | 1210 | expect_prompt (0); |
c906108c SS |
1211 | } |
1212 | ||
1213 | /* | |
1214 | * make_gdb_packet -- make a GDB packet. The data is always ASCII. | |
c5aa993b JM |
1215 | * A debug packet whose contents are <data> |
1216 | * is encapsulated for transmission in the form: | |
c906108c | 1217 | * |
c5aa993b | 1218 | * $ <data> # CSUM1 CSUM2 |
c906108c SS |
1219 | * |
1220 | * <data> must be ASCII alphanumeric and cannot include characters | |
1221 | * '$' or '#'. If <data> starts with two characters followed by | |
1222 | * ':', then the existing stubs interpret this as a sequence number. | |
1223 | * | |
1224 | * CSUM1 and CSUM2 are ascii hex representation of an 8-bit | |
1225 | * checksum of <data>, the most significant nibble is sent first. | |
1226 | * the hex digits 0-9,a-f are used. | |
1227 | * | |
1228 | */ | |
1229 | static void | |
1230 | make_gdb_packet (buf, data) | |
1231 | char *buf, *data; | |
1232 | { | |
1233 | int i; | |
1234 | unsigned char csum = 0; | |
1235 | int cnt; | |
1236 | char *p; | |
1237 | ||
1238 | debuglogs (3, "make_gdb_packet(%s)\n", data); | |
c5aa993b | 1239 | cnt = strlen (data); |
c906108c SS |
1240 | if (cnt > PBUFSIZ) |
1241 | error ("make_gdb_packet(): to much data\n"); | |
1242 | ||
1243 | /* start with the packet header */ | |
1244 | p = buf; | |
1245 | *p++ = '$'; | |
1246 | ||
1247 | /* calculate the checksum */ | |
c5aa993b JM |
1248 | for (i = 0; i < cnt; i++) |
1249 | { | |
1250 | csum += data[i]; | |
1251 | *p++ = data[i]; | |
1252 | } | |
c906108c SS |
1253 | |
1254 | /* terminate the data with a '#' */ | |
1255 | *p++ = '#'; | |
c5aa993b | 1256 | |
c906108c SS |
1257 | /* add the checksum as two ascii digits */ |
1258 | *p++ = tohex ((csum >> 4) & 0xf); | |
1259 | *p++ = tohex (csum & 0xf); | |
c5aa993b | 1260 | *p = 0x0; /* Null terminator on string */ |
c906108c SS |
1261 | } |
1262 | ||
1263 | /* | |
1264 | * array_send_packet -- send a GDB packet to the target with error handling. We | |
c5aa993b JM |
1265 | * get a '+' (ACK) back if the packet is received and the checksum |
1266 | * matches. Otherwise a '-' (NAK) is returned. It returns a 1 for a | |
1267 | * successful transmition, or a 0 for a failure. | |
c906108c SS |
1268 | */ |
1269 | static int | |
1270 | array_send_packet (packet) | |
1271 | char *packet; | |
1272 | { | |
1273 | int c, retries, i; | |
1274 | char junk[PBUFSIZ]; | |
1275 | ||
1276 | retries = 0; | |
1277 | ||
1278 | #if 0 | |
1279 | /* scan the packet to make sure it only contains valid characters. | |
1280 | this may sound silly, but sometimes a garbled packet will hang | |
1281 | the target board. We scan the whole thing, then print the error | |
1282 | message. | |
c5aa993b JM |
1283 | */ |
1284 | for (i = 0; i < strlen (packet); i++) | |
1285 | { | |
1286 | debuglogs (5, "array_send_packet(): Scanning \'%c\'\n", packet[i]); | |
1287 | /* legit hex numbers or command */ | |
1288 | if ((isxdigit (packet[i])) || (isalpha (packet[i]))) | |
1289 | continue; | |
1290 | switch (packet[i]) | |
1291 | { | |
1292 | case '+': /* ACK */ | |
1293 | case '-': /* NAK */ | |
1294 | case '#': /* end of packet */ | |
1295 | case '$': /* start of packet */ | |
1296 | continue; | |
1297 | default: /* bogus character */ | |
1298 | retries++; | |
1299 | debuglogs (4, "array_send_packet(): Found a non-ascii digit \'%c\' in the packet.\n", packet[i]); | |
1300 | } | |
c906108c | 1301 | } |
c5aa993b | 1302 | #endif |
c906108c SS |
1303 | |
1304 | if (retries > 0) | |
1305 | error ("Can't send packet, found %d non-ascii characters", retries); | |
1306 | ||
1307 | /* ok, try to send the packet */ | |
1308 | retries = 0; | |
c5aa993b JM |
1309 | while (retries++ <= 10) |
1310 | { | |
1311 | printf_monitor ("%s", packet); | |
1312 | ||
1313 | /* read until either a timeout occurs (-2) or '+' is read */ | |
1314 | while (retries <= 10) | |
1315 | { | |
1316 | c = readchar (-timeout); | |
1317 | debuglogs (3, "Reading a GDB protocol packet... Got a '%c'\n", c); | |
1318 | switch (c) | |
1319 | { | |
1320 | case '+': | |
1321 | debuglogs (3, "Got Ack\n"); | |
1322 | return 1; | |
1323 | case SERIAL_TIMEOUT: | |
1324 | debuglogs (3, "Timed out reading serial port\n"); | |
1325 | printf_monitor ("@"); /* resync with the monitor */ | |
1326 | expect_prompt (1); /* See if we get a expect_prompt */ | |
1327 | break; /* Retransmit buffer */ | |
1328 | case '-': | |
1329 | debuglogs (3, "Got NAK\n"); | |
1330 | printf_monitor ("@"); /* resync with the monitor */ | |
1331 | expect_prompt (1); /* See if we get a expect_prompt */ | |
1332 | break; | |
1333 | case '$': | |
1334 | /* it's probably an old response, or the echo of our command. | |
1335 | * just gobble up the packet and ignore it. | |
1336 | */ | |
1337 | debuglogs (3, "Got a junk packet\n"); | |
1338 | i = 0; | |
1339 | do | |
1340 | { | |
1341 | c = readchar (timeout); | |
1342 | junk[i++] = c; | |
1343 | } | |
1344 | while (c != '#'); | |
1345 | c = readchar (timeout); | |
1346 | junk[i++] = c; | |
1347 | c = readchar (timeout); | |
1348 | junk[i++] = c; | |
1349 | junk[i++] = '\0'; | |
1350 | debuglogs (3, "Reading a junk packet, got a \"%s\"\n", junk); | |
1351 | continue; /* Now, go look for next packet */ | |
1352 | default: | |
1353 | continue; | |
1354 | } | |
1355 | retries++; | |
1356 | debuglogs (3, "Retransmitting packet \"%s\"\n", packet); | |
1357 | break; /* Here to retransmit */ | |
1358 | } | |
1359 | } /* outer while */ | |
c906108c SS |
1360 | return 0; |
1361 | } | |
1362 | ||
1363 | /* | |
1364 | * array_get_packet -- get a GDB packet from the target. Basically we read till we | |
c5aa993b JM |
1365 | * see a '#', then check the checksum. It returns a 1 if it's gotten a |
1366 | * packet, or a 0 it the packet wasn't transmitted correctly. | |
c906108c SS |
1367 | */ |
1368 | static int | |
1369 | array_get_packet (packet) | |
1370 | char *packet; | |
1371 | { | |
1372 | int c; | |
1373 | int retries; | |
1374 | unsigned char csum; | |
1375 | unsigned char pktcsum; | |
1376 | char *bp; | |
1377 | ||
1378 | csum = 0; | |
1379 | bp = packet; | |
1380 | ||
1381 | memset (packet, 1, PBUFSIZ); | |
1382 | retries = 0; | |
c5aa993b JM |
1383 | while (retries <= 10) |
1384 | { | |
1385 | do | |
1386 | { | |
1387 | c = readchar (timeout); | |
1388 | if (c == SERIAL_TIMEOUT) | |
1389 | { | |
1390 | debuglogs (3, "array_get_packet: got time out from serial port.\n"); | |
1391 | } | |
1392 | debuglogs (3, "Waiting for a '$', got a %c\n", c); | |
c906108c | 1393 | } |
c5aa993b JM |
1394 | while (c != '$'); |
1395 | ||
1396 | retries = 0; | |
1397 | while (retries <= 10) | |
1398 | { | |
1399 | c = readchar (timeout); | |
1400 | debuglogs (3, "array_get_packet: got a '%c'\n", c); | |
1401 | switch (c) | |
1402 | { | |
1403 | case SERIAL_TIMEOUT: | |
1404 | debuglogs (3, "Timeout in mid-packet, retrying\n"); | |
1405 | return 0; | |
1406 | case '$': | |
1407 | debuglogs (3, "Saw new packet start in middle of old one\n"); | |
1408 | return 0; /* Start a new packet, count retries */ | |
1409 | case '#': | |
1410 | *bp = '\0'; | |
1411 | pktcsum = from_hex (readchar (timeout)) << 4; | |
1412 | pktcsum |= from_hex (readchar (timeout)); | |
1413 | if (csum == 0) | |
1414 | debuglogs (3, "\nGDB packet checksum zero, must be a bogus packet\n"); | |
1415 | if (csum == pktcsum) | |
1416 | { | |
1417 | debuglogs (3, "\nGDB packet checksum correct, packet data is \"%s\",\n", packet); | |
1418 | printf_monitor ("@"); | |
1419 | expect_prompt (1); | |
1420 | return 1; | |
1421 | } | |
1422 | debuglogs (3, "Bad checksum, sentsum=0x%x, csum=0x%x\n", pktcsum, csum); | |
1423 | return 0; | |
1424 | case '*': /* Run length encoding */ | |
1425 | debuglogs (5, "Run length encoding in packet\n"); | |
1426 | csum += c; | |
1427 | c = readchar (timeout); | |
1428 | csum += c; | |
1429 | c = c - ' ' + 3; /* Compute repeat count */ | |
1430 | ||
1431 | if (c > 0 && c < 255 && bp + c - 1 < packet + PBUFSIZ - 1) | |
1432 | { | |
1433 | memset (bp, *(bp - 1), c); | |
1434 | bp += c; | |
1435 | continue; | |
1436 | } | |
1437 | *bp = '\0'; | |
1438 | printf_filtered ("Repeat count %d too large for buffer.\n", c); | |
1439 | return 0; | |
1440 | ||
1441 | default: | |
1442 | if ((!isxdigit (c)) && (!ispunct (c))) | |
1443 | debuglogs (4, "Got a non-ascii digit \'%c\'.\\n", c); | |
1444 | if (bp < packet + PBUFSIZ - 1) | |
1445 | { | |
1446 | *bp++ = c; | |
1447 | csum += c; | |
1448 | continue; | |
1449 | } | |
1450 | ||
1451 | *bp = '\0'; | |
1452 | puts_filtered ("Remote packet too long.\n"); | |
1453 | return 0; | |
1454 | } | |
c906108c | 1455 | } |
c906108c | 1456 | } |
c5aa993b | 1457 | return 0; /* exceeded retries */ |
c906108c SS |
1458 | } |
1459 | ||
1460 | /* | |
1461 | * ascii2hexword -- convert an ascii number represented by 8 digits to a hex value. | |
1462 | */ | |
1463 | static unsigned long | |
1464 | ascii2hexword (mem) | |
1465 | unsigned char *mem; | |
1466 | { | |
1467 | unsigned long val; | |
1468 | int i; | |
1469 | char buf[9]; | |
1470 | ||
1471 | val = 0; | |
c5aa993b JM |
1472 | for (i = 0; i < 8; i++) |
1473 | { | |
1474 | val <<= 4; | |
1475 | if (mem[i] >= 'A' && mem[i] <= 'F') | |
1476 | val = val + mem[i] - 'A' + 10; | |
1477 | if (mem[i] >= 'a' && mem[i] <= 'f') | |
1478 | val = val + mem[i] - 'a' + 10; | |
1479 | if (mem[i] >= '0' && mem[i] <= '9') | |
1480 | val = val + mem[i] - '0'; | |
1481 | buf[i] = mem[i]; | |
1482 | } | |
c906108c SS |
1483 | buf[8] = '\0'; |
1484 | debuglogs (4, "ascii2hexword() got a 0x%x from %s(%x).\n", val, buf, mem); | |
1485 | return val; | |
1486 | } | |
1487 | ||
1488 | /* | |
1489 | * ascii2hexword -- convert a hex value to an ascii number represented by 8 | |
c5aa993b | 1490 | * digits. |
c906108c SS |
1491 | */ |
1492 | static void | |
1493 | hexword2ascii (mem, num) | |
1494 | unsigned char *mem; | |
1495 | unsigned long num; | |
1496 | { | |
1497 | int i; | |
1498 | unsigned char ch; | |
c5aa993b | 1499 | |
c906108c | 1500 | debuglogs (4, "hexword2ascii() converting %x ", num); |
c5aa993b JM |
1501 | for (i = 7; i >= 0; i--) |
1502 | { | |
1503 | mem[i] = tohex ((num >> 4) & 0xf); | |
1504 | mem[i] = tohex (num & 0xf); | |
1505 | num = num >> 4; | |
1506 | } | |
c906108c SS |
1507 | mem[8] = '\0'; |
1508 | debuglogs (4, "\tto a %s", mem); | |
1509 | } | |
1510 | ||
1511 | /* Convert hex digit A to a number. */ | |
1512 | static int | |
1513 | from_hex (a) | |
1514 | int a; | |
c5aa993b | 1515 | { |
c906108c SS |
1516 | if (a == 0) |
1517 | return 0; | |
1518 | ||
c5aa993b | 1519 | debuglogs (4, "from_hex got a 0x%x(%c)\n", a, a); |
c906108c SS |
1520 | if (a >= '0' && a <= '9') |
1521 | return a - '0'; | |
1522 | if (a >= 'a' && a <= 'f') | |
1523 | return a - 'a' + 10; | |
1524 | if (a >= 'A' && a <= 'F') | |
1525 | return a - 'A' + 10; | |
c5aa993b JM |
1526 | else |
1527 | { | |
1528 | error ("Reply contains invalid hex digit 0x%x", a); | |
1529 | } | |
c906108c SS |
1530 | } |
1531 | ||
1532 | /* Convert number NIB to a hex digit. */ | |
1533 | static int | |
1534 | tohex (nib) | |
1535 | int nib; | |
1536 | { | |
1537 | if (nib < 10) | |
c5aa993b | 1538 | return '0' + nib; |
c906108c | 1539 | else |
c5aa993b | 1540 | return 'a' + nib - 10; |
c906108c SS |
1541 | } |
1542 | ||
1543 | /* | |
1544 | * _initialize_remote_monitors -- setup a few addtitional commands that | |
c5aa993b | 1545 | * are usually only used by monitors. |
c906108c SS |
1546 | */ |
1547 | void | |
1548 | _initialize_remote_monitors () | |
1549 | { | |
1550 | /* generic monitor command */ | |
1551 | add_com ("monitor", class_obscure, monitor_command, | |
c5aa993b | 1552 | "Send a command to the debug monitor."); |
c906108c SS |
1553 | |
1554 | } | |
1555 | ||
1556 | /* | |
1557 | * _initialize_array -- do any special init stuff for the target. | |
1558 | */ | |
1559 | void | |
1560 | _initialize_array () | |
1561 | { | |
c5aa993b | 1562 | init_array_ops (); |
c906108c SS |
1563 | add_target (&array_ops); |
1564 | } |