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