Commit | Line | Data |
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c906108c | 1 | /* Remote debugging interface for Array Tech RAID controller.. |
b6ba6518 KB |
2 | Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
3 | 2000, 2001 Free Software Foundation, Inc. | |
c906108c SS |
4 | Contributed by Cygnus Support. Written by Rob Savoye for Cygnus. |
5 | ||
6 | This module talks to a debug monitor called 'MONITOR', which | |
7 | We communicate with MONITOR via either a direct serial line, or a TCP | |
8 | (or possibly TELNET) stream to a terminal multiplexor, | |
9 | which in turn talks to the target board. | |
10 | ||
c5aa993b JM |
11 | This file is part of GDB. |
12 | ||
13 | This program is free software; you can redistribute it and/or modify | |
14 | it under the terms of the GNU General Public License as published by | |
15 | the Free Software Foundation; either version 2 of the License, or | |
16 | (at your option) any later version. | |
17 | ||
18 | This program is distributed in the hope that it will be useful, | |
19 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
20 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
21 | GNU General Public License for more details. | |
22 | ||
23 | You should have received a copy of the GNU General Public License | |
24 | along with this program; if not, write to the Free Software | |
25 | Foundation, Inc., 59 Temple Place - Suite 330, | |
26 | Boston, MA 02111-1307, USA. | |
c906108c SS |
27 | */ |
28 | ||
29 | #include "defs.h" | |
30 | #include "gdbcore.h" | |
31 | #include "target.h" | |
c906108c | 32 | #include <ctype.h> |
c906108c SS |
33 | #include <sys/types.h> |
34 | #include "gdb_string.h" | |
35 | #include "command.h" | |
36 | #include "serial.h" | |
37 | #include "monitor.h" | |
38 | #include "remote-utils.h" | |
d4f3574e SS |
39 | #include "inferior.h" |
40 | #include "version.h" | |
4e052eda | 41 | #include "regcache.h" |
c906108c SS |
42 | |
43 | extern int baud_rate; | |
44 | ||
45 | #define ARRAY_PROMPT ">> " | |
46 | ||
47 | #define SWAP_TARGET_AND_HOST(buffer,len) \ | |
48 | do \ | |
49 | { \ | |
50 | if (TARGET_BYTE_ORDER != HOST_BYTE_ORDER) \ | |
51 | { \ | |
52 | char tmp; \ | |
53 | char *p = (char *)(buffer); \ | |
54 | char *q = ((char *)(buffer)) + len - 1; \ | |
55 | for (; p < q; p++, q--) \ | |
56 | { \ | |
57 | tmp = *q; \ | |
58 | *q = *p; \ | |
59 | *p = tmp; \ | |
60 | } \ | |
61 | } \ | |
62 | } \ | |
63 | while (0) | |
64 | ||
a14ed312 | 65 | static void debuglogs (int, char *, ...); |
c5aa993b JM |
66 | static void array_open (); |
67 | static void array_close (); | |
68 | static void array_detach (); | |
69 | static void array_attach (); | |
70 | static void array_resume (); | |
71 | static void array_fetch_register (); | |
72 | static void array_store_register (); | |
73 | static void array_fetch_registers (); | |
74 | static void array_store_registers (); | |
75 | static void array_prepare_to_store (); | |
76 | static void array_files_info (); | |
77 | static void array_kill (); | |
78 | static void array_create_inferior (); | |
79 | static void array_mourn_inferior (); | |
80 | static void make_gdb_packet (); | |
81 | static int array_xfer_memory (); | |
82 | static int array_wait (); | |
83 | static int array_insert_breakpoint (); | |
84 | static int array_remove_breakpoint (); | |
85 | static int tohex (); | |
86 | static int to_hex (); | |
87 | static int from_hex (); | |
88 | static int array_send_packet (); | |
89 | static int array_get_packet (); | |
90 | static unsigned long ascii2hexword (); | |
91 | static void hexword2ascii (); | |
c906108c | 92 | |
c906108c SS |
93 | #define LOG_FILE "monitor.log" |
94 | #if defined (LOG_FILE) | |
95 | FILE *log_file; | |
96 | #endif | |
97 | ||
98 | static int timeout = 30; | |
99 | /* Having this larger than 400 causes us to be incompatible with m68k-stub.c | |
100 | and i386-stub.c. Normally, no one would notice because it only matters | |
101 | for writing large chunks of memory (e.g. in downloads). Also, this needs | |
102 | to be more than 400 if required to hold the registers (see below, where | |
103 | we round it up based on REGISTER_BYTES). */ | |
104 | #define PBUFSIZ 400 | |
105 | ||
106 | /* | |
107 | * Descriptor for I/O to remote machine. Initialize it to NULL so that | |
108 | * array_open knows that we don't have a file open when the program starts. | |
109 | */ | |
110 | serial_t array_desc = NULL; | |
111 | ||
112 | /* | |
113 | * this array of registers need to match the indexes used by GDB. The | |
114 | * whole reason this exists is cause the various ROM monitors use | |
115 | * different strings than GDB does, and doesn't support all the | |
116 | * registers either. So, typing "info reg sp" becomes a "r30". | |
117 | */ | |
118 | extern char *tmp_mips_processor_type; | |
c5aa993b | 119 | extern int mips_set_processor_type (); |
c906108c | 120 | |
c5aa993b | 121 | static struct target_ops array_ops; |
c906108c | 122 | |
c5aa993b JM |
123 | static void |
124 | init_array_ops (void) | |
c906108c | 125 | { |
c5aa993b JM |
126 | array_ops.to_shortname = "array"; |
127 | array_ops.to_longname = | |
c906108c | 128 | "Debug using the standard GDB remote protocol for the Array Tech target.", |
c5aa993b | 129 | array_ops.to_doc = |
c906108c | 130 | "Debug using the standard GDB remote protocol for the Array Tech target.\n\ |
c5aa993b JM |
131 | Specify the serial device it is connected to (e.g. /dev/ttya)."; |
132 | array_ops.to_open = array_open; | |
133 | array_ops.to_close = array_close; | |
134 | array_ops.to_attach = NULL; | |
135 | array_ops.to_post_attach = NULL; | |
c906108c | 136 | array_ops.to_require_attach = NULL; |
c5aa993b | 137 | array_ops.to_detach = array_detach; |
c906108c | 138 | array_ops.to_require_detach = NULL; |
c5aa993b JM |
139 | array_ops.to_resume = array_resume; |
140 | array_ops.to_wait = array_wait; | |
c906108c | 141 | array_ops.to_post_wait = NULL; |
c5aa993b JM |
142 | array_ops.to_fetch_registers = array_fetch_registers; |
143 | array_ops.to_store_registers = array_store_registers; | |
144 | array_ops.to_prepare_to_store = array_prepare_to_store; | |
145 | array_ops.to_xfer_memory = array_xfer_memory; | |
146 | array_ops.to_files_info = array_files_info; | |
147 | array_ops.to_insert_breakpoint = array_insert_breakpoint; | |
148 | array_ops.to_remove_breakpoint = array_remove_breakpoint; | |
149 | array_ops.to_terminal_init = 0; | |
150 | array_ops.to_terminal_inferior = 0; | |
151 | array_ops.to_terminal_ours_for_output = 0; | |
152 | array_ops.to_terminal_ours = 0; | |
153 | array_ops.to_terminal_info = 0; | |
154 | array_ops.to_kill = array_kill; | |
155 | array_ops.to_load = 0; | |
156 | array_ops.to_lookup_symbol = 0; | |
157 | array_ops.to_create_inferior = array_create_inferior; | |
c906108c SS |
158 | array_ops.to_post_startup_inferior = NULL; |
159 | array_ops.to_acknowledge_created_inferior = NULL; | |
c5aa993b JM |
160 | array_ops.to_clone_and_follow_inferior = NULL; |
161 | array_ops.to_post_follow_inferior_by_clone = NULL; | |
c906108c SS |
162 | array_ops.to_insert_fork_catchpoint = NULL; |
163 | array_ops.to_remove_fork_catchpoint = NULL; | |
164 | array_ops.to_insert_vfork_catchpoint = NULL; | |
c5aa993b | 165 | array_ops.to_remove_vfork_catchpoint = NULL; |
c906108c | 166 | array_ops.to_has_forked = NULL; |
c5aa993b JM |
167 | array_ops.to_has_vforked = NULL; |
168 | array_ops.to_can_follow_vfork_prior_to_exec = NULL; | |
c906108c SS |
169 | array_ops.to_post_follow_vfork = NULL; |
170 | array_ops.to_insert_exec_catchpoint = NULL; | |
171 | array_ops.to_remove_exec_catchpoint = NULL; | |
172 | array_ops.to_has_execd = NULL; | |
173 | array_ops.to_reported_exec_events_per_exec_call = NULL; | |
174 | array_ops.to_has_exited = NULL; | |
c5aa993b JM |
175 | array_ops.to_mourn_inferior = array_mourn_inferior; |
176 | array_ops.to_can_run = 0; | |
177 | array_ops.to_notice_signals = 0; | |
178 | array_ops.to_thread_alive = 0; | |
179 | array_ops.to_stop = 0; | |
c906108c | 180 | array_ops.to_pid_to_exec_file = NULL; |
c5aa993b JM |
181 | array_ops.to_core_file_to_sym_file = NULL; |
182 | array_ops.to_stratum = process_stratum; | |
183 | array_ops.DONT_USE = 0; | |
184 | array_ops.to_has_all_memory = 1; | |
185 | array_ops.to_has_memory = 1; | |
186 | array_ops.to_has_stack = 1; | |
187 | array_ops.to_has_registers = 1; | |
188 | array_ops.to_has_execution = 1; | |
189 | array_ops.to_sections = 0; | |
190 | array_ops.to_sections_end = 0; | |
191 | array_ops.to_magic = OPS_MAGIC; | |
c906108c SS |
192 | }; |
193 | ||
194 | /* | |
195 | * printf_monitor -- send data to monitor. Works just like printf. | |
196 | */ | |
197 | static void | |
c5aa993b | 198 | printf_monitor (char *pattern,...) |
c906108c SS |
199 | { |
200 | va_list args; | |
201 | char buf[PBUFSIZ]; | |
202 | int i; | |
203 | ||
c5aa993b | 204 | va_start (args, pattern); |
c906108c | 205 | |
c5aa993b | 206 | vsprintf (buf, pattern, args); |
c906108c SS |
207 | |
208 | debuglogs (1, "printf_monitor(), Sending: \"%s\".", buf); | |
209 | ||
c5aa993b | 210 | if (strlen (buf) > PBUFSIZ) |
c906108c | 211 | error ("printf_monitor(): string too long"); |
c5aa993b JM |
212 | if (SERIAL_WRITE (array_desc, buf, strlen (buf))) |
213 | fprintf (stderr, "SERIAL_WRITE failed: %s\n", safe_strerror (errno)); | |
c906108c SS |
214 | } |
215 | /* | |
216 | * write_monitor -- send raw data to monitor. | |
217 | */ | |
218 | static void | |
e082ddca | 219 | write_monitor (char data[], int len) |
c906108c | 220 | { |
c5aa993b JM |
221 | if (SERIAL_WRITE (array_desc, data, len)) |
222 | fprintf (stderr, "SERIAL_WRITE failed: %s\n", safe_strerror (errno)); | |
223 | ||
224 | *(data + len + 1) = '\0'; | |
c906108c SS |
225 | debuglogs (1, "write_monitor(), Sending: \"%s\".", data); |
226 | ||
227 | } | |
228 | ||
229 | /* | |
230 | * debuglogs -- deal with debugging info to multiple sources. This takes | |
c5aa993b JM |
231 | * two real args, the first one is the level to be compared against |
232 | * the sr_get_debug() value, the second arg is a printf buffer and args | |
233 | * to be formatted and printed. A CR is added after each string is printed. | |
c906108c SS |
234 | */ |
235 | static void | |
c5aa993b | 236 | debuglogs (int level, char *pattern,...) |
c906108c SS |
237 | { |
238 | va_list args; | |
239 | char *p; | |
240 | unsigned char buf[PBUFSIZ]; | |
241 | char newbuf[PBUFSIZ]; | |
242 | int i; | |
243 | ||
c5aa993b | 244 | va_start (args, pattern); |
c906108c | 245 | |
c5aa993b JM |
246 | if ((level < 0) || (level > 100)) |
247 | { | |
248 | error ("Bad argument passed to debuglogs(), needs debug level"); | |
249 | return; | |
250 | } | |
251 | ||
252 | vsprintf (buf, pattern, args); /* format the string */ | |
253 | ||
c906108c SS |
254 | /* convert some characters so it'll look right in the log */ |
255 | p = newbuf; | |
c5aa993b JM |
256 | for (i = 0; buf[i] != '\0'; i++) |
257 | { | |
258 | if (i > PBUFSIZ) | |
259 | error ("Debug message too long"); | |
260 | switch (buf[i]) | |
261 | { | |
262 | case '\n': /* newlines */ | |
263 | *p++ = '\\'; | |
264 | *p++ = 'n'; | |
265 | continue; | |
266 | case '\r': /* carriage returns */ | |
267 | *p++ = '\\'; | |
268 | *p++ = 'r'; | |
269 | continue; | |
270 | case '\033': /* escape */ | |
271 | *p++ = '\\'; | |
272 | *p++ = 'e'; | |
273 | continue; | |
274 | case '\t': /* tab */ | |
275 | *p++ = '\\'; | |
276 | *p++ = 't'; | |
277 | continue; | |
278 | case '\b': /* backspace */ | |
279 | *p++ = '\\'; | |
280 | *p++ = 'b'; | |
281 | continue; | |
282 | default: /* no change */ | |
283 | *p++ = buf[i]; | |
284 | } | |
c906108c | 285 | |
c5aa993b JM |
286 | if (buf[i] < 26) |
287 | { /* modify control characters */ | |
288 | *p++ = '^'; | |
289 | *p++ = buf[i] + 'A'; | |
290 | continue; | |
291 | } | |
292 | if (buf[i] >= 128) | |
293 | { /* modify control characters */ | |
294 | *p++ = '!'; | |
295 | *p++ = buf[i] + 'A'; | |
296 | continue; | |
297 | } | |
c906108c | 298 | } |
c5aa993b | 299 | *p = '\0'; /* terminate the string */ |
c906108c | 300 | |
c5aa993b | 301 | if (sr_get_debug () > level) |
c906108c SS |
302 | printf_unfiltered ("%s\n", newbuf); |
303 | ||
c5aa993b JM |
304 | #ifdef LOG_FILE /* write to the monitor log */ |
305 | if (log_file != 0x0) | |
306 | { | |
307 | fputs (newbuf, log_file); | |
308 | fputc ('\n', log_file); | |
309 | fflush (log_file); | |
310 | } | |
c906108c SS |
311 | #endif |
312 | } | |
313 | ||
314 | /* readchar -- read a character from the remote system, doing all the fancy | |
c5aa993b | 315 | * timeout stuff. |
c906108c SS |
316 | */ |
317 | static int | |
fba45db2 | 318 | readchar (int timeout) |
c906108c SS |
319 | { |
320 | int c; | |
321 | ||
c5aa993b | 322 | c = SERIAL_READCHAR (array_desc, abs (timeout)); |
c906108c | 323 | |
c5aa993b JM |
324 | if (sr_get_debug () > 5) |
325 | { | |
326 | putchar (c & 0x7f); | |
327 | debuglogs (5, "readchar: timeout = %d\n", timeout); | |
328 | } | |
c906108c SS |
329 | |
330 | #ifdef LOG_FILE | |
331 | if (isascii (c)) | |
c5aa993b | 332 | putc (c & 0x7f, log_file); |
c906108c SS |
333 | #endif |
334 | ||
335 | if (c >= 0) | |
336 | return c & 0x7f; | |
337 | ||
c5aa993b JM |
338 | if (c == SERIAL_TIMEOUT) |
339 | { | |
340 | if (timeout <= 0) | |
341 | return c; /* Polls shouldn't generate timeout errors */ | |
342 | error ("Timeout reading from remote system."); | |
c906108c SS |
343 | #ifdef LOG_FILE |
344 | fputs ("ERROR: Timeout reading from remote system", log_file); | |
345 | #endif | |
c5aa993b JM |
346 | } |
347 | perror_with_name ("readchar"); | |
c906108c SS |
348 | } |
349 | ||
350 | /* | |
351 | * expect -- scan input from the remote system, until STRING is found. | |
c5aa993b JM |
352 | * If DISCARD is non-zero, then discard non-matching input, else print |
353 | * it out. Let the user break out immediately. | |
c906108c SS |
354 | */ |
355 | static void | |
fba45db2 | 356 | expect (char *string, int discard) |
c906108c SS |
357 | { |
358 | char *p = string; | |
359 | int c; | |
360 | ||
361 | ||
362 | debuglogs (1, "Expecting \"%s\".", string); | |
363 | ||
8edbea78 | 364 | immediate_quit++; |
c5aa993b JM |
365 | while (1) |
366 | { | |
367 | c = readchar (timeout); | |
368 | if (!isascii (c)) | |
369 | continue; | |
370 | if (c == *p++) | |
371 | { | |
372 | if (*p == '\0') | |
373 | { | |
8edbea78 | 374 | immediate_quit--; |
c5aa993b JM |
375 | debuglogs (4, "Matched"); |
376 | return; | |
377 | } | |
378 | } | |
379 | else | |
380 | { | |
381 | if (!discard) | |
382 | { | |
383 | fputc_unfiltered (c, gdb_stdout); | |
384 | } | |
385 | p = string; | |
386 | } | |
c906108c | 387 | } |
c906108c SS |
388 | } |
389 | ||
390 | /* Keep discarding input until we see the MONITOR array_cmds->prompt. | |
391 | ||
392 | The convention for dealing with the expect_prompt is that you | |
393 | o give your command | |
394 | o *then* wait for the expect_prompt. | |
395 | ||
396 | Thus the last thing that a procedure does with the serial line | |
397 | will be an expect_prompt(). Exception: array_resume does not | |
398 | wait for the expect_prompt, because the terminal is being handed over | |
399 | to the inferior. However, the next thing which happens after that | |
400 | is a array_wait which does wait for the expect_prompt. | |
401 | Note that this includes abnormal exit, e.g. error(). This is | |
402 | necessary to prevent getting into states from which we can't | |
403 | recover. */ | |
404 | static void | |
fba45db2 | 405 | expect_prompt (int discard) |
c906108c SS |
406 | { |
407 | expect (ARRAY_PROMPT, discard); | |
408 | } | |
409 | ||
410 | /* | |
411 | * junk -- ignore junk characters. Returns a 1 if junk, 0 otherwise | |
412 | */ | |
413 | static int | |
fba45db2 | 414 | junk (char ch) |
c906108c | 415 | { |
c5aa993b JM |
416 | switch (ch) |
417 | { | |
418 | case '\0': | |
419 | case ' ': | |
420 | case '-': | |
421 | case '\t': | |
422 | case '\r': | |
423 | case '\n': | |
424 | if (sr_get_debug () > 5) | |
425 | debuglogs (5, "Ignoring \'%c\'.", ch); | |
426 | return 1; | |
427 | default: | |
428 | if (sr_get_debug () > 5) | |
429 | debuglogs (5, "Accepting \'%c\'.", ch); | |
430 | return 0; | |
431 | } | |
c906108c SS |
432 | } |
433 | ||
434 | /* | |
435 | * get_hex_digit -- Get a hex digit from the remote system & return its value. | |
c5aa993b | 436 | * If ignore is nonzero, ignore spaces, newline & tabs. |
c906108c SS |
437 | */ |
438 | static int | |
fba45db2 | 439 | get_hex_digit (int ignore) |
c906108c SS |
440 | { |
441 | static int ch; | |
c5aa993b JM |
442 | while (1) |
443 | { | |
444 | ch = readchar (timeout); | |
445 | if (junk (ch)) | |
446 | continue; | |
447 | if (sr_get_debug () > 4) | |
448 | { | |
449 | debuglogs (4, "get_hex_digit() got a 0x%x(%c)", ch, ch); | |
450 | } | |
451 | else | |
452 | { | |
453 | #ifdef LOG_FILE /* write to the monitor log */ | |
454 | if (log_file != 0x0) | |
455 | { | |
456 | fputs ("get_hex_digit() got a 0x", log_file); | |
457 | fputc (ch, log_file); | |
458 | fputc ('\n', log_file); | |
459 | fflush (log_file); | |
460 | } | |
c906108c | 461 | #endif |
c5aa993b | 462 | } |
c906108c | 463 | |
c5aa993b JM |
464 | if (ch >= '0' && ch <= '9') |
465 | return ch - '0'; | |
466 | else if (ch >= 'A' && ch <= 'F') | |
467 | return ch - 'A' + 10; | |
468 | else if (ch >= 'a' && ch <= 'f') | |
469 | return ch - 'a' + 10; | |
470 | else if (ch == ' ' && ignore) | |
471 | ; | |
472 | else | |
473 | { | |
474 | expect_prompt (1); | |
475 | debuglogs (4, "Invalid hex digit from remote system. (0x%x)", ch); | |
476 | error ("Invalid hex digit from remote system. (0x%x)", ch); | |
477 | } | |
c906108c | 478 | } |
c906108c SS |
479 | } |
480 | ||
481 | /* get_hex_byte -- Get a byte from monitor and put it in *BYT. | |
c5aa993b | 482 | * Accept any number leading spaces. |
c906108c SS |
483 | */ |
484 | static void | |
fba45db2 | 485 | get_hex_byte (char *byt) |
c906108c SS |
486 | { |
487 | int val; | |
488 | ||
489 | val = get_hex_digit (1) << 4; | |
490 | debuglogs (4, "get_hex_byte() -- Read first nibble 0x%x", val); | |
c5aa993b | 491 | |
c906108c SS |
492 | val |= get_hex_digit (0); |
493 | debuglogs (4, "get_hex_byte() -- Read second nibble 0x%x", val); | |
494 | *byt = val; | |
c5aa993b | 495 | |
c906108c SS |
496 | debuglogs (4, "get_hex_byte() -- Read a 0x%x", val); |
497 | } | |
498 | ||
499 | /* | |
500 | * get_hex_word -- Get N 32-bit words from remote, each preceded by a space, | |
c5aa993b | 501 | * and put them in registers starting at REGNO. |
c906108c SS |
502 | */ |
503 | static int | |
fba45db2 | 504 | get_hex_word (void) |
c906108c SS |
505 | { |
506 | long val, newval; | |
507 | int i; | |
508 | ||
509 | val = 0; | |
510 | ||
511 | #if 0 | |
c5aa993b JM |
512 | if (HOST_BYTE_ORDER == BIG_ENDIAN) |
513 | { | |
c906108c | 514 | #endif |
c5aa993b JM |
515 | for (i = 0; i < 8; i++) |
516 | val = (val << 4) + get_hex_digit (i == 0); | |
c906108c | 517 | #if 0 |
c5aa993b JM |
518 | } |
519 | else | |
520 | { | |
521 | for (i = 7; i >= 0; i--) | |
522 | val = (val << 4) + get_hex_digit (i == 0); | |
523 | } | |
c906108c SS |
524 | #endif |
525 | ||
526 | debuglogs (4, "get_hex_word() got a 0x%x for a %s host.", val, (HOST_BYTE_ORDER == BIG_ENDIAN) ? "big endian" : "little endian"); | |
527 | ||
528 | return val; | |
529 | } | |
530 | ||
531 | /* This is called not only when we first attach, but also when the | |
532 | user types "run" after having attached. */ | |
533 | static void | |
fba45db2 | 534 | array_create_inferior (char *execfile, char *args, char **env) |
c906108c SS |
535 | { |
536 | int entry_pt; | |
537 | ||
538 | if (args && *args) | |
c5aa993b | 539 | error ("Can't pass arguments to remote MONITOR process"); |
c906108c SS |
540 | |
541 | if (execfile == 0 || exec_bfd == 0) | |
c5aa993b | 542 | error ("No executable file specified"); |
c906108c SS |
543 | |
544 | entry_pt = (int) bfd_get_start_address (exec_bfd); | |
545 | ||
546 | /* The "process" (board) is already stopped awaiting our commands, and | |
547 | the program is already downloaded. We just set its PC and go. */ | |
548 | ||
549 | clear_proceed_status (); | |
550 | ||
551 | /* Tell wait_for_inferior that we've started a new process. */ | |
552 | init_wait_for_inferior (); | |
553 | ||
554 | /* Set up the "saved terminal modes" of the inferior | |
555 | based on what modes we are starting it with. */ | |
556 | target_terminal_init (); | |
557 | ||
558 | /* Install inferior's terminal modes. */ | |
559 | target_terminal_inferior (); | |
560 | ||
561 | /* insert_step_breakpoint (); FIXME, do we need this? */ | |
562 | ||
563 | /* Let 'er rip... */ | |
c5aa993b | 564 | proceed ((CORE_ADDR) entry_pt, TARGET_SIGNAL_DEFAULT, 0); |
c906108c SS |
565 | } |
566 | ||
567 | /* | |
568 | * array_open -- open a connection to a remote debugger. | |
c5aa993b | 569 | * NAME is the filename used for communication. |
c906108c SS |
570 | */ |
571 | static int baudrate = 9600; | |
572 | static char dev_name[100]; | |
573 | ||
574 | static void | |
fba45db2 | 575 | array_open (char *args, char *name, int from_tty) |
c906108c SS |
576 | { |
577 | char packet[PBUFSIZ]; | |
578 | ||
579 | if (args == NULL) | |
580 | error ("Use `target %s DEVICE-NAME' to use a serial port, or \n\ | |
581 | `target %s HOST-NAME:PORT-NUMBER' to use a network connection.", name, name); | |
582 | ||
583 | /* if (is_open) */ | |
c5aa993b | 584 | array_close (0); |
c906108c SS |
585 | |
586 | target_preopen (from_tty); | |
587 | unpush_target (&array_ops); | |
588 | ||
589 | tmp_mips_processor_type = "lsi33k"; /* change the default from r3051 */ | |
590 | mips_set_processor_type_command ("lsi33k", 0); | |
591 | ||
c5aa993b JM |
592 | strcpy (dev_name, args); |
593 | array_desc = SERIAL_OPEN (dev_name); | |
c906108c SS |
594 | |
595 | if (array_desc == NULL) | |
c5aa993b | 596 | perror_with_name (dev_name); |
c906108c | 597 | |
c5aa993b JM |
598 | if (baud_rate != -1) |
599 | { | |
600 | if (SERIAL_SETBAUDRATE (array_desc, baud_rate)) | |
601 | { | |
602 | SERIAL_CLOSE (array_desc); | |
603 | perror_with_name (name); | |
604 | } | |
c906108c | 605 | } |
c5aa993b JM |
606 | |
607 | SERIAL_RAW (array_desc); | |
c906108c SS |
608 | |
609 | #if defined (LOG_FILE) | |
610 | log_file = fopen (LOG_FILE, "w"); | |
611 | if (log_file == NULL) | |
612 | perror_with_name (LOG_FILE); | |
d4f3574e | 613 | fprintf (log_file, "GDB %s (%s", version, host_name); |
c906108c SS |
614 | fprintf (log_file, " --target %s)\n", array_ops.to_shortname); |
615 | fprintf (log_file, "Remote target %s connected to %s\n\n", array_ops.to_shortname, dev_name); | |
616 | #endif | |
617 | ||
618 | /* see if the target is alive. For a ROM monitor, we can just try to force the | |
619 | expect_prompt to print a few times. For the GDB remote protocol, the application | |
620 | being debugged is sitting at a breakpoint and waiting for GDB to initialize | |
621 | the connection. We force it to give us an empty packet to see if it's alive. | |
c5aa993b JM |
622 | */ |
623 | debuglogs (3, "Trying to ACK the target's debug stub"); | |
624 | /* unless your are on the new hardware, the old board won't initialize | |
625 | because the '@' doesn't flush output like it does on the new ROMS. | |
626 | */ | |
627 | printf_monitor ("@"); /* ask for the last signal */ | |
628 | expect_prompt (1); /* See if we get a expect_prompt */ | |
c906108c | 629 | #ifdef TEST_ARRAY /* skip packet for testing */ |
c5aa993b JM |
630 | make_gdb_packet (packet, "?"); /* ask for a bogus packet */ |
631 | if (array_send_packet (packet) == 0) | |
632 | error ("Couldn't transmit packet\n"); | |
633 | printf_monitor ("@\n"); /* force it to flush stdout */ | |
634 | expect_prompt (1); /* See if we get a expect_prompt */ | |
c906108c SS |
635 | #endif |
636 | push_target (&array_ops); | |
637 | if (from_tty) | |
c5aa993b | 638 | printf ("Remote target %s connected to %s\n", array_ops.to_shortname, dev_name); |
c906108c SS |
639 | } |
640 | ||
641 | /* | |
642 | * array_close -- Close out all files and local state before this | |
c5aa993b | 643 | * target loses control. |
c906108c SS |
644 | */ |
645 | ||
646 | static void | |
fba45db2 | 647 | array_close (int quitting) |
c906108c | 648 | { |
c5aa993b | 649 | SERIAL_CLOSE (array_desc); |
c906108c SS |
650 | array_desc = NULL; |
651 | ||
652 | debuglogs (1, "array_close (quitting=%d)", quitting); | |
653 | ||
654 | #if defined (LOG_FILE) | |
c5aa993b JM |
655 | if (log_file) |
656 | { | |
657 | if (ferror (log_file)) | |
658 | printf_filtered ("Error writing log file.\n"); | |
659 | if (fclose (log_file) != 0) | |
660 | printf_filtered ("Error closing log file.\n"); | |
661 | } | |
c906108c SS |
662 | #endif |
663 | } | |
664 | ||
665 | /* | |
666 | * array_detach -- terminate the open connection to the remote | |
c5aa993b JM |
667 | * debugger. Use this when you want to detach and do something |
668 | * else with your gdb. | |
c906108c SS |
669 | */ |
670 | static void | |
fba45db2 | 671 | array_detach (int from_tty) |
c906108c SS |
672 | { |
673 | ||
674 | debuglogs (1, "array_detach ()"); | |
675 | ||
c5aa993b | 676 | pop_target (); /* calls array_close to do the real work */ |
c906108c SS |
677 | if (from_tty) |
678 | printf ("Ending remote %s debugging\n", target_shortname); | |
679 | } | |
680 | ||
681 | /* | |
682 | * array_attach -- attach GDB to the target. | |
683 | */ | |
684 | static void | |
fba45db2 | 685 | array_attach (char *args, int from_tty) |
c906108c SS |
686 | { |
687 | if (from_tty) | |
688 | printf ("Starting remote %s debugging\n", target_shortname); | |
c5aa993b | 689 | |
c906108c | 690 | debuglogs (1, "array_attach (args=%s)", args); |
c5aa993b | 691 | |
c906108c SS |
692 | printf_monitor ("go %x\n"); |
693 | /* swallow the echo. */ | |
694 | expect ("go %x\n", 1); | |
695 | } | |
c5aa993b | 696 | |
c906108c SS |
697 | /* |
698 | * array_resume -- Tell the remote machine to resume. | |
699 | */ | |
700 | static void | |
fba45db2 | 701 | array_resume (int pid, int step, enum target_signal sig) |
c906108c SS |
702 | { |
703 | debuglogs (1, "array_resume (step=%d, sig=%d)", step, sig); | |
704 | ||
c5aa993b JM |
705 | if (step) |
706 | { | |
707 | printf_monitor ("s\n"); | |
708 | } | |
709 | else | |
710 | { | |
711 | printf_monitor ("go\n"); | |
712 | } | |
c906108c SS |
713 | } |
714 | ||
715 | #define TMPBUFSIZ 5 | |
716 | ||
717 | /* | |
718 | * array_wait -- Wait until the remote machine stops, then return, | |
719 | * storing status in status just as `wait' would. | |
720 | */ | |
721 | static int | |
fba45db2 | 722 | array_wait (int pid, struct target_waitstatus *status) |
c906108c SS |
723 | { |
724 | int old_timeout = timeout; | |
725 | int result, i; | |
726 | char c; | |
727 | serial_t tty_desc; | |
728 | serial_ttystate ttystate; | |
729 | ||
c5aa993b JM |
730 | debuglogs (1, "array_wait (), printing extraneous text."); |
731 | ||
c906108c SS |
732 | status->kind = TARGET_WAITKIND_EXITED; |
733 | status->value.integer = 0; | |
734 | ||
c5aa993b JM |
735 | timeout = 0; /* Don't time out -- user program is running. */ |
736 | ||
c906108c SS |
737 | #if !defined(__GO32__) && !defined(__MSDOS__) && !defined(_WIN32) |
738 | tty_desc = SERIAL_FDOPEN (0); | |
739 | ttystate = SERIAL_GET_TTY_STATE (tty_desc); | |
740 | SERIAL_RAW (tty_desc); | |
741 | ||
742 | i = 0; | |
743 | /* poll on the serial port and the keyboard. */ | |
c5aa993b JM |
744 | while (1) |
745 | { | |
746 | c = readchar (timeout); | |
747 | if (c > 0) | |
748 | { | |
749 | if (c == *(ARRAY_PROMPT + i)) | |
750 | { | |
751 | if (++i >= strlen (ARRAY_PROMPT)) | |
752 | { /* matched the prompt */ | |
753 | debuglogs (4, "array_wait(), got the expect_prompt."); | |
754 | break; | |
755 | } | |
756 | } | |
757 | else | |
758 | { /* not the prompt */ | |
759 | i = 0; | |
760 | } | |
761 | fputc_unfiltered (c, gdb_stdout); | |
762 | gdb_flush (gdb_stdout); | |
c906108c | 763 | } |
c5aa993b JM |
764 | c = SERIAL_READCHAR (tty_desc, timeout); |
765 | if (c > 0) | |
766 | { | |
767 | SERIAL_WRITE (array_desc, &c, 1); | |
768 | /* do this so it looks like there's keyboard echo */ | |
769 | if (c == 3) /* exit on Control-C */ | |
770 | break; | |
c906108c | 771 | #if 0 |
c5aa993b JM |
772 | fputc_unfiltered (c, gdb_stdout); |
773 | gdb_flush (gdb_stdout); | |
c906108c | 774 | #endif |
c5aa993b | 775 | } |
c906108c | 776 | } |
c906108c SS |
777 | SERIAL_SET_TTY_STATE (tty_desc, ttystate); |
778 | #else | |
c5aa993b | 779 | expect_prompt (1); |
c906108c SS |
780 | debuglogs (4, "array_wait(), got the expect_prompt."); |
781 | #endif | |
782 | ||
783 | status->kind = TARGET_WAITKIND_STOPPED; | |
784 | status->value.sig = TARGET_SIGNAL_TRAP; | |
785 | ||
786 | timeout = old_timeout; | |
787 | ||
788 | return 0; | |
789 | } | |
790 | ||
791 | /* | |
792 | * array_fetch_registers -- read the remote registers into the | |
c5aa993b | 793 | * block regs. |
c906108c SS |
794 | */ |
795 | static void | |
fba45db2 | 796 | array_fetch_registers (int ignored) |
c906108c SS |
797 | { |
798 | int regno, i; | |
799 | char *p; | |
800 | unsigned char packet[PBUFSIZ]; | |
801 | char regs[REGISTER_BYTES]; | |
802 | ||
803 | debuglogs (1, "array_fetch_registers (ignored=%d)\n", ignored); | |
804 | ||
805 | memset (packet, 0, PBUFSIZ); | |
806 | /* Unimplemented registers read as all bits zero. */ | |
807 | memset (regs, 0, REGISTER_BYTES); | |
808 | make_gdb_packet (packet, "g"); | |
809 | if (array_send_packet (packet) == 0) | |
810 | error ("Couldn't transmit packet\n"); | |
811 | if (array_get_packet (packet) == 0) | |
c5aa993b | 812 | error ("Couldn't receive packet\n"); |
c906108c SS |
813 | /* FIXME: read bytes from packet */ |
814 | debuglogs (4, "array_fetch_registers: Got a \"%s\" back\n", packet); | |
c5aa993b JM |
815 | for (regno = 0; regno <= PC_REGNUM + 4; regno++) |
816 | { | |
817 | /* supply register stores in target byte order, so swap here */ | |
818 | /* FIXME: convert from ASCII hex to raw bytes */ | |
819 | i = ascii2hexword (packet + (regno * 8)); | |
820 | debuglogs (5, "Adding register %d = %x\n", regno, i); | |
821 | SWAP_TARGET_AND_HOST (&i, 4); | |
822 | supply_register (regno, (char *) &i); | |
823 | } | |
c906108c SS |
824 | } |
825 | ||
826 | /* | |
827 | * This is unused by targets like this one that use a | |
828 | * protocol based on GDB's remote protocol. | |
829 | */ | |
830 | static void | |
fba45db2 | 831 | array_fetch_register (int ignored) |
c906108c | 832 | { |
3f084537 | 833 | array_fetch_registers (0 /* ignored */); |
c906108c SS |
834 | } |
835 | ||
836 | /* | |
837 | * Get all the registers from the targets. They come back in a large array. | |
838 | */ | |
839 | static void | |
fba45db2 | 840 | array_store_registers (int ignored) |
c906108c SS |
841 | { |
842 | int regno; | |
843 | unsigned long i; | |
844 | char packet[PBUFSIZ]; | |
845 | char buf[PBUFSIZ]; | |
846 | char num[9]; | |
c5aa993b | 847 | |
c906108c SS |
848 | debuglogs (1, "array_store_registers()"); |
849 | ||
850 | memset (packet, 0, PBUFSIZ); | |
851 | memset (buf, 0, PBUFSIZ); | |
852 | buf[0] = 'G'; | |
853 | ||
854 | /* Unimplemented registers read as all bits zero. */ | |
855 | /* FIXME: read bytes from packet */ | |
c5aa993b JM |
856 | for (regno = 0; regno < 41; regno++) |
857 | { /* FIXME */ | |
858 | /* supply register stores in target byte order, so swap here */ | |
859 | /* FIXME: convert from ASCII hex to raw bytes */ | |
860 | i = (unsigned long) read_register (regno); | |
861 | hexword2ascii (num, i); | |
862 | strcpy (buf + (regno * 8) + 1, num); | |
863 | } | |
c906108c SS |
864 | *(buf + (regno * 8) + 2) = 0; |
865 | make_gdb_packet (packet, buf); | |
866 | if (array_send_packet (packet) == 0) | |
867 | error ("Couldn't transmit packet\n"); | |
868 | if (array_get_packet (packet) == 0) | |
c5aa993b JM |
869 | error ("Couldn't receive packet\n"); |
870 | ||
c906108c SS |
871 | registers_changed (); |
872 | } | |
873 | ||
874 | /* | |
875 | * This is unused by targets like this one that use a | |
876 | * protocol based on GDB's remote protocol. | |
877 | */ | |
878 | static void | |
fba45db2 | 879 | array_store_register (int ignored) |
c906108c | 880 | { |
3f084537 | 881 | array_store_registers (0 /* ignored */); |
c906108c SS |
882 | } |
883 | ||
884 | /* Get ready to modify the registers array. On machines which store | |
885 | individual registers, this doesn't need to do anything. On machines | |
886 | which store all the registers in one fell swoop, this makes sure | |
887 | that registers contains all the registers from the program being | |
888 | debugged. */ | |
889 | ||
890 | static void | |
fba45db2 | 891 | array_prepare_to_store (void) |
c906108c SS |
892 | { |
893 | /* Do nothing, since we can store individual regs */ | |
894 | } | |
895 | ||
896 | static void | |
fba45db2 | 897 | array_files_info (void) |
c906108c SS |
898 | { |
899 | printf ("\tAttached to %s at %d baud.\n", | |
900 | dev_name, baudrate); | |
901 | } | |
902 | ||
903 | /* | |
904 | * array_write_inferior_memory -- Copy LEN bytes of data from debugger | |
c5aa993b | 905 | * memory at MYADDR to inferior's memory at MEMADDR. Returns length moved. |
c906108c SS |
906 | */ |
907 | static int | |
fba45db2 | 908 | array_write_inferior_memory (CORE_ADDR memaddr, unsigned char *myaddr, int len) |
c906108c SS |
909 | { |
910 | unsigned long i; | |
911 | int j; | |
912 | char packet[PBUFSIZ]; | |
913 | char buf[PBUFSIZ]; | |
914 | char num[9]; | |
915 | char *p; | |
c5aa993b | 916 | |
c906108c | 917 | debuglogs (1, "array_write_inferior_memory (memaddr=0x%x, myaddr=0x%x, len=%d)", memaddr, myaddr, len); |
c5aa993b | 918 | memset (buf, '\0', PBUFSIZ); /* this also sets the string terminator */ |
c906108c SS |
919 | p = buf; |
920 | ||
c5aa993b | 921 | *p++ = 'M'; /* The command to write memory */ |
c906108c | 922 | hexword2ascii (num, memaddr); /* convert the address */ |
c5aa993b | 923 | strcpy (p, num); /* copy the address */ |
c906108c | 924 | p += 8; |
c5aa993b JM |
925 | *p++ = ','; /* add comma delimeter */ |
926 | hexword2ascii (num, len); /* Get the length as a 4 digit number */ | |
c906108c SS |
927 | *p++ = num[4]; |
928 | *p++ = num[5]; | |
929 | *p++ = num[6]; | |
930 | *p++ = num[7]; | |
c5aa993b JM |
931 | *p++ = ':'; /* add the colon delimeter */ |
932 | for (j = 0; j < len; j++) | |
933 | { /* copy the data in after converting it */ | |
934 | *p++ = tohex ((myaddr[j] >> 4) & 0xf); | |
935 | *p++ = tohex (myaddr[j] & 0xf); | |
936 | } | |
937 | ||
c906108c SS |
938 | make_gdb_packet (packet, buf); |
939 | if (array_send_packet (packet) == 0) | |
940 | error ("Couldn't transmit packet\n"); | |
941 | if (array_get_packet (packet) == 0) | |
c5aa993b | 942 | error ("Couldn't receive packet\n"); |
c906108c SS |
943 | |
944 | return len; | |
945 | } | |
946 | ||
947 | /* | |
948 | * array_read_inferior_memory -- read LEN bytes from inferior memory | |
c5aa993b JM |
949 | * at MEMADDR. Put the result at debugger address MYADDR. Returns |
950 | * length moved. | |
c906108c SS |
951 | */ |
952 | static int | |
fba45db2 | 953 | array_read_inferior_memory (CORE_ADDR memaddr, char *myaddr, int len) |
c906108c SS |
954 | { |
955 | int j; | |
956 | char buf[20]; | |
957 | char packet[PBUFSIZ]; | |
958 | int count; /* Number of bytes read so far. */ | |
959 | unsigned long startaddr; /* Starting address of this pass. */ | |
960 | int len_this_pass; /* Number of bytes to read in this pass. */ | |
961 | ||
962 | debuglogs (1, "array_read_inferior_memory (memaddr=0x%x, myaddr=0x%x, len=%d)", memaddr, myaddr, len); | |
963 | ||
964 | /* Note that this code works correctly if startaddr is just less | |
965 | than UINT_MAX (well, really CORE_ADDR_MAX if there was such a | |
966 | thing). That is, something like | |
967 | array_read_bytes (CORE_ADDR_MAX - 4, foo, 4) | |
968 | works--it never adds len To memaddr and gets 0. */ | |
969 | /* However, something like | |
970 | array_read_bytes (CORE_ADDR_MAX - 3, foo, 4) | |
971 | doesn't need to work. Detect it and give up if there's an attempt | |
972 | to do that. */ | |
c5aa993b JM |
973 | if (((memaddr - 1) + len) < memaddr) |
974 | { | |
975 | errno = EIO; | |
976 | return 0; | |
977 | } | |
978 | ||
c906108c SS |
979 | for (count = 0, startaddr = memaddr; count < len; startaddr += len_this_pass) |
980 | { | |
981 | /* Try to align to 16 byte boundry (why?) */ | |
982 | len_this_pass = 16; | |
983 | if ((startaddr % 16) != 0) | |
984 | { | |
985 | len_this_pass -= startaddr % 16; | |
986 | } | |
987 | /* Only transfer bytes we need */ | |
988 | if (len_this_pass > (len - count)) | |
989 | { | |
990 | len_this_pass = (len - count); | |
991 | } | |
992 | /* Fetch the bytes */ | |
993 | debuglogs (3, "read %d bytes from inferior address %x", len_this_pass, | |
994 | startaddr); | |
d4f3574e | 995 | sprintf (buf, "m%08lx,%04x", startaddr, len_this_pass); |
c906108c SS |
996 | make_gdb_packet (packet, buf); |
997 | if (array_send_packet (packet) == 0) | |
998 | { | |
999 | error ("Couldn't transmit packet\n"); | |
1000 | } | |
1001 | if (array_get_packet (packet) == 0) | |
1002 | { | |
c5aa993b | 1003 | error ("Couldn't receive packet\n"); |
c906108c SS |
1004 | } |
1005 | if (*packet == 0) | |
1006 | { | |
1007 | error ("Got no data in the GDB packet\n"); | |
1008 | } | |
1009 | /* Pick packet apart and xfer bytes to myaddr */ | |
1010 | debuglogs (4, "array_read_inferior_memory: Got a \"%s\" back\n", packet); | |
c5aa993b | 1011 | for (j = 0; j < len_this_pass; j++) |
c906108c SS |
1012 | { |
1013 | /* extract the byte values */ | |
c5aa993b JM |
1014 | myaddr[count++] = from_hex (*(packet + (j * 2))) * 16 + from_hex (*(packet + (j * 2) + 1)); |
1015 | debuglogs (5, "myaddr[%d] set to %x\n", count - 1, myaddr[count - 1]); | |
c906108c SS |
1016 | } |
1017 | } | |
1018 | return (count); | |
1019 | } | |
1020 | ||
e082ddca KB |
1021 | /* Transfer LEN bytes between GDB address MYADDR and target address |
1022 | MEMADDR. If WRITE is non-zero, transfer them to the target, | |
1023 | otherwise transfer them from the target. TARGET is unused. | |
1024 | ||
1025 | Returns the number of bytes transferred. */ | |
1026 | ||
c906108c | 1027 | static int |
e082ddca | 1028 | array_xfer_memory (CORE_ADDR memaddr, char *myaddr, int len, int write, |
29e57380 C |
1029 | struct mem_attrib *attrib ATTRIBUTE_UNUSED, |
1030 | struct target_ops *target ATTRIBUTE_UNUSED) | |
c906108c SS |
1031 | { |
1032 | if (write) | |
1033 | return array_write_inferior_memory (memaddr, myaddr, len); | |
1034 | else | |
1035 | return array_read_inferior_memory (memaddr, myaddr, len); | |
1036 | } | |
1037 | ||
1038 | static void | |
fba45db2 | 1039 | array_kill (char *args, int from_tty) |
c906108c | 1040 | { |
c5aa993b | 1041 | return; /* ignore attempts to kill target system */ |
c906108c SS |
1042 | } |
1043 | ||
1044 | /* Clean up when a program exits. | |
1045 | The program actually lives on in the remote processor's RAM, and may be | |
1046 | run again without a download. Don't leave it full of breakpoint | |
1047 | instructions. */ | |
1048 | ||
1049 | static void | |
fba45db2 | 1050 | array_mourn_inferior (void) |
c906108c SS |
1051 | { |
1052 | remove_breakpoints (); | |
1053 | generic_mourn_inferior (); /* Do all the proper things now */ | |
1054 | } | |
1055 | ||
1056 | #define MAX_ARRAY_BREAKPOINTS 16 | |
1057 | ||
c5aa993b JM |
1058 | static CORE_ADDR breakaddr[MAX_ARRAY_BREAKPOINTS] = |
1059 | {0}; | |
c906108c SS |
1060 | |
1061 | /* | |
1062 | * array_insert_breakpoint -- add a breakpoint | |
1063 | */ | |
1064 | static int | |
fba45db2 | 1065 | array_insert_breakpoint (CORE_ADDR addr, char *shadow) |
c906108c SS |
1066 | { |
1067 | int i; | |
1068 | int bp_size = 0; | |
1069 | CORE_ADDR bp_addr = addr; | |
1070 | ||
1071 | debuglogs (1, "array_insert_breakpoint() addr = 0x%x", addr); | |
1072 | BREAKPOINT_FROM_PC (&bp_addr, &bp_size); | |
1073 | ||
c5aa993b JM |
1074 | for (i = 0; i <= MAX_ARRAY_BREAKPOINTS; i++) |
1075 | { | |
1076 | if (breakaddr[i] == 0) | |
1077 | { | |
1078 | breakaddr[i] = addr; | |
1079 | if (sr_get_debug () > 4) | |
d4f3574e | 1080 | printf ("Breakpoint at %s\n", paddr_nz (addr)); |
c5aa993b JM |
1081 | array_read_inferior_memory (bp_addr, shadow, bp_size); |
1082 | printf_monitor ("b 0x%x\n", addr); | |
1083 | expect_prompt (1); | |
1084 | return 0; | |
1085 | } | |
c906108c | 1086 | } |
c906108c | 1087 | |
c5aa993b | 1088 | fprintf (stderr, "Too many breakpoints (> 16) for monitor\n"); |
c906108c SS |
1089 | return 1; |
1090 | } | |
1091 | ||
1092 | /* | |
1093 | * _remove_breakpoint -- Tell the monitor to remove a breakpoint | |
1094 | */ | |
1095 | static int | |
fba45db2 | 1096 | array_remove_breakpoint (CORE_ADDR addr, char *shadow) |
c906108c SS |
1097 | { |
1098 | int i; | |
1099 | ||
1100 | debuglogs (1, "array_remove_breakpoint() addr = 0x%x", addr); | |
1101 | ||
c5aa993b JM |
1102 | for (i = 0; i < MAX_ARRAY_BREAKPOINTS; i++) |
1103 | { | |
1104 | if (breakaddr[i] == addr) | |
1105 | { | |
1106 | breakaddr[i] = 0; | |
1107 | /* some monitors remove breakpoints based on the address */ | |
1108 | printf_monitor ("bd %x\n", i); | |
1109 | expect_prompt (1); | |
1110 | return 0; | |
1111 | } | |
c906108c | 1112 | } |
d4f3574e SS |
1113 | fprintf (stderr, "Can't find breakpoint associated with 0x%s\n", |
1114 | paddr_nz (addr)); | |
c906108c SS |
1115 | return 1; |
1116 | } | |
1117 | ||
1118 | static void | |
fba45db2 | 1119 | array_stop (void) |
c906108c SS |
1120 | { |
1121 | debuglogs (1, "array_stop()"); | |
c5aa993b JM |
1122 | printf_monitor ("\003"); |
1123 | expect_prompt (1); | |
c906108c SS |
1124 | } |
1125 | ||
1126 | /* | |
1127 | * array_command -- put a command string, in args, out to MONITOR. | |
c5aa993b JM |
1128 | * Output from MONITOR is placed on the users terminal until the |
1129 | * expect_prompt is seen. FIXME | |
c906108c SS |
1130 | */ |
1131 | static void | |
fba45db2 | 1132 | monitor_command (char *args, int fromtty) |
c906108c SS |
1133 | { |
1134 | debuglogs (1, "monitor_command (args=%s)", args); | |
1135 | ||
1136 | if (array_desc == NULL) | |
c5aa993b | 1137 | error ("monitor target not open."); |
c906108c SS |
1138 | |
1139 | if (!args) | |
c5aa993b JM |
1140 | error ("Missing command."); |
1141 | ||
c906108c | 1142 | printf_monitor ("%s\n", args); |
c5aa993b | 1143 | expect_prompt (0); |
c906108c SS |
1144 | } |
1145 | ||
1146 | /* | |
1147 | * make_gdb_packet -- make a GDB packet. The data is always ASCII. | |
c5aa993b JM |
1148 | * A debug packet whose contents are <data> |
1149 | * is encapsulated for transmission in the form: | |
c906108c | 1150 | * |
c5aa993b | 1151 | * $ <data> # CSUM1 CSUM2 |
c906108c SS |
1152 | * |
1153 | * <data> must be ASCII alphanumeric and cannot include characters | |
1154 | * '$' or '#'. If <data> starts with two characters followed by | |
1155 | * ':', then the existing stubs interpret this as a sequence number. | |
1156 | * | |
1157 | * CSUM1 and CSUM2 are ascii hex representation of an 8-bit | |
1158 | * checksum of <data>, the most significant nibble is sent first. | |
1159 | * the hex digits 0-9,a-f are used. | |
1160 | * | |
1161 | */ | |
1162 | static void | |
fba45db2 | 1163 | make_gdb_packet (char *buf, char *data) |
c906108c SS |
1164 | { |
1165 | int i; | |
1166 | unsigned char csum = 0; | |
1167 | int cnt; | |
1168 | char *p; | |
1169 | ||
1170 | debuglogs (3, "make_gdb_packet(%s)\n", data); | |
c5aa993b | 1171 | cnt = strlen (data); |
c906108c SS |
1172 | if (cnt > PBUFSIZ) |
1173 | error ("make_gdb_packet(): to much data\n"); | |
1174 | ||
1175 | /* start with the packet header */ | |
1176 | p = buf; | |
1177 | *p++ = '$'; | |
1178 | ||
1179 | /* calculate the checksum */ | |
c5aa993b JM |
1180 | for (i = 0; i < cnt; i++) |
1181 | { | |
1182 | csum += data[i]; | |
1183 | *p++ = data[i]; | |
1184 | } | |
c906108c SS |
1185 | |
1186 | /* terminate the data with a '#' */ | |
1187 | *p++ = '#'; | |
c5aa993b | 1188 | |
c906108c SS |
1189 | /* add the checksum as two ascii digits */ |
1190 | *p++ = tohex ((csum >> 4) & 0xf); | |
1191 | *p++ = tohex (csum & 0xf); | |
c5aa993b | 1192 | *p = 0x0; /* Null terminator on string */ |
c906108c SS |
1193 | } |
1194 | ||
1195 | /* | |
1196 | * array_send_packet -- send a GDB packet to the target with error handling. We | |
c5aa993b JM |
1197 | * get a '+' (ACK) back if the packet is received and the checksum |
1198 | * matches. Otherwise a '-' (NAK) is returned. It returns a 1 for a | |
1199 | * successful transmition, or a 0 for a failure. | |
c906108c SS |
1200 | */ |
1201 | static int | |
fba45db2 | 1202 | array_send_packet (char *packet) |
c906108c SS |
1203 | { |
1204 | int c, retries, i; | |
1205 | char junk[PBUFSIZ]; | |
1206 | ||
1207 | retries = 0; | |
1208 | ||
1209 | #if 0 | |
1210 | /* scan the packet to make sure it only contains valid characters. | |
1211 | this may sound silly, but sometimes a garbled packet will hang | |
1212 | the target board. We scan the whole thing, then print the error | |
1213 | message. | |
c5aa993b JM |
1214 | */ |
1215 | for (i = 0; i < strlen (packet); i++) | |
1216 | { | |
1217 | debuglogs (5, "array_send_packet(): Scanning \'%c\'\n", packet[i]); | |
1218 | /* legit hex numbers or command */ | |
1219 | if ((isxdigit (packet[i])) || (isalpha (packet[i]))) | |
1220 | continue; | |
1221 | switch (packet[i]) | |
1222 | { | |
1223 | case '+': /* ACK */ | |
1224 | case '-': /* NAK */ | |
1225 | case '#': /* end of packet */ | |
1226 | case '$': /* start of packet */ | |
1227 | continue; | |
1228 | default: /* bogus character */ | |
1229 | retries++; | |
1230 | debuglogs (4, "array_send_packet(): Found a non-ascii digit \'%c\' in the packet.\n", packet[i]); | |
1231 | } | |
c906108c | 1232 | } |
c5aa993b | 1233 | #endif |
c906108c SS |
1234 | |
1235 | if (retries > 0) | |
1236 | error ("Can't send packet, found %d non-ascii characters", retries); | |
1237 | ||
1238 | /* ok, try to send the packet */ | |
1239 | retries = 0; | |
c5aa993b JM |
1240 | while (retries++ <= 10) |
1241 | { | |
1242 | printf_monitor ("%s", packet); | |
1243 | ||
1244 | /* read until either a timeout occurs (-2) or '+' is read */ | |
1245 | while (retries <= 10) | |
1246 | { | |
1247 | c = readchar (-timeout); | |
1248 | debuglogs (3, "Reading a GDB protocol packet... Got a '%c'\n", c); | |
1249 | switch (c) | |
1250 | { | |
1251 | case '+': | |
1252 | debuglogs (3, "Got Ack\n"); | |
1253 | return 1; | |
1254 | case SERIAL_TIMEOUT: | |
1255 | debuglogs (3, "Timed out reading serial port\n"); | |
1256 | printf_monitor ("@"); /* resync with the monitor */ | |
1257 | expect_prompt (1); /* See if we get a expect_prompt */ | |
1258 | break; /* Retransmit buffer */ | |
1259 | case '-': | |
1260 | debuglogs (3, "Got NAK\n"); | |
1261 | printf_monitor ("@"); /* resync with the monitor */ | |
1262 | expect_prompt (1); /* See if we get a expect_prompt */ | |
1263 | break; | |
1264 | case '$': | |
1265 | /* it's probably an old response, or the echo of our command. | |
1266 | * just gobble up the packet and ignore it. | |
1267 | */ | |
1268 | debuglogs (3, "Got a junk packet\n"); | |
1269 | i = 0; | |
1270 | do | |
1271 | { | |
1272 | c = readchar (timeout); | |
1273 | junk[i++] = c; | |
1274 | } | |
1275 | while (c != '#'); | |
1276 | c = readchar (timeout); | |
1277 | junk[i++] = c; | |
1278 | c = readchar (timeout); | |
1279 | junk[i++] = c; | |
1280 | junk[i++] = '\0'; | |
1281 | debuglogs (3, "Reading a junk packet, got a \"%s\"\n", junk); | |
1282 | continue; /* Now, go look for next packet */ | |
1283 | default: | |
1284 | continue; | |
1285 | } | |
1286 | retries++; | |
1287 | debuglogs (3, "Retransmitting packet \"%s\"\n", packet); | |
1288 | break; /* Here to retransmit */ | |
1289 | } | |
1290 | } /* outer while */ | |
c906108c SS |
1291 | return 0; |
1292 | } | |
1293 | ||
1294 | /* | |
1295 | * array_get_packet -- get a GDB packet from the target. Basically we read till we | |
c5aa993b JM |
1296 | * see a '#', then check the checksum. It returns a 1 if it's gotten a |
1297 | * packet, or a 0 it the packet wasn't transmitted correctly. | |
c906108c SS |
1298 | */ |
1299 | static int | |
fba45db2 | 1300 | array_get_packet (char *packet) |
c906108c SS |
1301 | { |
1302 | int c; | |
1303 | int retries; | |
1304 | unsigned char csum; | |
1305 | unsigned char pktcsum; | |
1306 | char *bp; | |
1307 | ||
1308 | csum = 0; | |
1309 | bp = packet; | |
1310 | ||
1311 | memset (packet, 1, PBUFSIZ); | |
1312 | retries = 0; | |
c5aa993b JM |
1313 | while (retries <= 10) |
1314 | { | |
1315 | do | |
1316 | { | |
1317 | c = readchar (timeout); | |
1318 | if (c == SERIAL_TIMEOUT) | |
1319 | { | |
1320 | debuglogs (3, "array_get_packet: got time out from serial port.\n"); | |
1321 | } | |
1322 | debuglogs (3, "Waiting for a '$', got a %c\n", c); | |
c906108c | 1323 | } |
c5aa993b JM |
1324 | while (c != '$'); |
1325 | ||
1326 | retries = 0; | |
1327 | while (retries <= 10) | |
1328 | { | |
1329 | c = readchar (timeout); | |
1330 | debuglogs (3, "array_get_packet: got a '%c'\n", c); | |
1331 | switch (c) | |
1332 | { | |
1333 | case SERIAL_TIMEOUT: | |
1334 | debuglogs (3, "Timeout in mid-packet, retrying\n"); | |
1335 | return 0; | |
1336 | case '$': | |
1337 | debuglogs (3, "Saw new packet start in middle of old one\n"); | |
1338 | return 0; /* Start a new packet, count retries */ | |
1339 | case '#': | |
1340 | *bp = '\0'; | |
1341 | pktcsum = from_hex (readchar (timeout)) << 4; | |
1342 | pktcsum |= from_hex (readchar (timeout)); | |
1343 | if (csum == 0) | |
1344 | debuglogs (3, "\nGDB packet checksum zero, must be a bogus packet\n"); | |
1345 | if (csum == pktcsum) | |
1346 | { | |
1347 | debuglogs (3, "\nGDB packet checksum correct, packet data is \"%s\",\n", packet); | |
1348 | printf_monitor ("@"); | |
1349 | expect_prompt (1); | |
1350 | return 1; | |
1351 | } | |
1352 | debuglogs (3, "Bad checksum, sentsum=0x%x, csum=0x%x\n", pktcsum, csum); | |
1353 | return 0; | |
1354 | case '*': /* Run length encoding */ | |
1355 | debuglogs (5, "Run length encoding in packet\n"); | |
1356 | csum += c; | |
1357 | c = readchar (timeout); | |
1358 | csum += c; | |
1359 | c = c - ' ' + 3; /* Compute repeat count */ | |
1360 | ||
1361 | if (c > 0 && c < 255 && bp + c - 1 < packet + PBUFSIZ - 1) | |
1362 | { | |
1363 | memset (bp, *(bp - 1), c); | |
1364 | bp += c; | |
1365 | continue; | |
1366 | } | |
1367 | *bp = '\0'; | |
1368 | printf_filtered ("Repeat count %d too large for buffer.\n", c); | |
1369 | return 0; | |
1370 | ||
1371 | default: | |
1372 | if ((!isxdigit (c)) && (!ispunct (c))) | |
1373 | debuglogs (4, "Got a non-ascii digit \'%c\'.\\n", c); | |
1374 | if (bp < packet + PBUFSIZ - 1) | |
1375 | { | |
1376 | *bp++ = c; | |
1377 | csum += c; | |
1378 | continue; | |
1379 | } | |
1380 | ||
1381 | *bp = '\0'; | |
1382 | puts_filtered ("Remote packet too long.\n"); | |
1383 | return 0; | |
1384 | } | |
c906108c | 1385 | } |
c906108c | 1386 | } |
c5aa993b | 1387 | return 0; /* exceeded retries */ |
c906108c SS |
1388 | } |
1389 | ||
1390 | /* | |
1391 | * ascii2hexword -- convert an ascii number represented by 8 digits to a hex value. | |
1392 | */ | |
1393 | static unsigned long | |
fba45db2 | 1394 | ascii2hexword (unsigned char *mem) |
c906108c SS |
1395 | { |
1396 | unsigned long val; | |
1397 | int i; | |
1398 | char buf[9]; | |
1399 | ||
1400 | val = 0; | |
c5aa993b JM |
1401 | for (i = 0; i < 8; i++) |
1402 | { | |
1403 | val <<= 4; | |
1404 | if (mem[i] >= 'A' && mem[i] <= 'F') | |
1405 | val = val + mem[i] - 'A' + 10; | |
1406 | if (mem[i] >= 'a' && mem[i] <= 'f') | |
1407 | val = val + mem[i] - 'a' + 10; | |
1408 | if (mem[i] >= '0' && mem[i] <= '9') | |
1409 | val = val + mem[i] - '0'; | |
1410 | buf[i] = mem[i]; | |
1411 | } | |
c906108c SS |
1412 | buf[8] = '\0'; |
1413 | debuglogs (4, "ascii2hexword() got a 0x%x from %s(%x).\n", val, buf, mem); | |
1414 | return val; | |
1415 | } | |
1416 | ||
1417 | /* | |
1418 | * ascii2hexword -- convert a hex value to an ascii number represented by 8 | |
c5aa993b | 1419 | * digits. |
c906108c SS |
1420 | */ |
1421 | static void | |
fba45db2 | 1422 | hexword2ascii (unsigned char *mem, unsigned long num) |
c906108c SS |
1423 | { |
1424 | int i; | |
1425 | unsigned char ch; | |
c5aa993b | 1426 | |
c906108c | 1427 | debuglogs (4, "hexword2ascii() converting %x ", num); |
c5aa993b JM |
1428 | for (i = 7; i >= 0; i--) |
1429 | { | |
1430 | mem[i] = tohex ((num >> 4) & 0xf); | |
1431 | mem[i] = tohex (num & 0xf); | |
1432 | num = num >> 4; | |
1433 | } | |
c906108c SS |
1434 | mem[8] = '\0'; |
1435 | debuglogs (4, "\tto a %s", mem); | |
1436 | } | |
1437 | ||
1438 | /* Convert hex digit A to a number. */ | |
1439 | static int | |
fba45db2 | 1440 | from_hex (int a) |
c5aa993b | 1441 | { |
c906108c SS |
1442 | if (a == 0) |
1443 | return 0; | |
1444 | ||
c5aa993b | 1445 | debuglogs (4, "from_hex got a 0x%x(%c)\n", a, a); |
c906108c SS |
1446 | if (a >= '0' && a <= '9') |
1447 | return a - '0'; | |
1448 | if (a >= 'a' && a <= 'f') | |
1449 | return a - 'a' + 10; | |
1450 | if (a >= 'A' && a <= 'F') | |
1451 | return a - 'A' + 10; | |
c5aa993b JM |
1452 | else |
1453 | { | |
1454 | error ("Reply contains invalid hex digit 0x%x", a); | |
1455 | } | |
c906108c SS |
1456 | } |
1457 | ||
1458 | /* Convert number NIB to a hex digit. */ | |
1459 | static int | |
fba45db2 | 1460 | tohex (int nib) |
c906108c SS |
1461 | { |
1462 | if (nib < 10) | |
c5aa993b | 1463 | return '0' + nib; |
c906108c | 1464 | else |
c5aa993b | 1465 | return 'a' + nib - 10; |
c906108c SS |
1466 | } |
1467 | ||
1468 | /* | |
1469 | * _initialize_remote_monitors -- setup a few addtitional commands that | |
c5aa993b | 1470 | * are usually only used by monitors. |
c906108c SS |
1471 | */ |
1472 | void | |
fba45db2 | 1473 | _initialize_remote_monitors (void) |
c906108c SS |
1474 | { |
1475 | /* generic monitor command */ | |
1476 | add_com ("monitor", class_obscure, monitor_command, | |
c5aa993b | 1477 | "Send a command to the debug monitor."); |
c906108c SS |
1478 | |
1479 | } | |
1480 | ||
1481 | /* | |
1482 | * _initialize_array -- do any special init stuff for the target. | |
1483 | */ | |
1484 | void | |
fba45db2 | 1485 | _initialize_array (void) |
c906108c | 1486 | { |
c5aa993b | 1487 | init_array_ops (); |
c906108c SS |
1488 | add_target (&array_ops); |
1489 | } |