| 1 | /* Remote debugging interface for boot monitors, for GDB. |
| 2 | Copyright 1990, 1991, 1992, 1993 Free Software Foundation, Inc. |
| 3 | Contributed by Cygnus Support. Written by Rob Savoye for Cygnus. |
| 4 | |
| 5 | This file is part of GDB. |
| 6 | |
| 7 | This program is free software; you can redistribute it and/or modify |
| 8 | it under the terms of the GNU General Public License as published by |
| 9 | the Free Software Foundation; either version 2 of the License, or |
| 10 | (at your option) any later version. |
| 11 | |
| 12 | This program is distributed in the hope that it will be useful, |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | GNU General Public License for more details. |
| 16 | |
| 17 | You should have received a copy of the GNU General Public License |
| 18 | along with this program; if not, write to the Free Software |
| 19 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ |
| 20 | |
| 21 | /* This file was derived from various remote-* modules. It is a collection |
| 22 | of generic support functions so GDB can talk directly to a ROM based |
| 23 | monitor. This saves use from having to hack an exception based handler |
| 24 | into existance, and makes for quick porting. |
| 25 | |
| 26 | This module talks to a debug monitor called 'MONITOR', which |
| 27 | We communicate with MONITOR via either a direct serial line, or a TCP |
| 28 | (or possibly TELNET) stream to a terminal multiplexor, |
| 29 | which in turn talks to the target board. |
| 30 | */ |
| 31 | |
| 32 | #include "defs.h" |
| 33 | #include "gdbcore.h" |
| 34 | #include "target.h" |
| 35 | #include "wait.h" |
| 36 | #include <varargs.h> |
| 37 | #include <signal.h> |
| 38 | #include <string.h> |
| 39 | #include <sys/types.h> |
| 40 | #include "command.h" |
| 41 | #include "serial.h" |
| 42 | #include "monitor.h" |
| 43 | #include "remote-utils.h" |
| 44 | |
| 45 | #ifdef HAVE_TERMIO |
| 46 | # define TERMINAL struct termios |
| 47 | #else |
| 48 | # define TERMINAL struct sgttyb |
| 49 | #endif |
| 50 | |
| 51 | struct monitor_ops *current_monitor; |
| 52 | extern struct cmd_list_element *setlist; |
| 53 | extern struct cmd_list_element *unsetlist; |
| 54 | struct cmd_list_element *showlist; |
| 55 | extern char *version; |
| 56 | extern char *host_name; |
| 57 | extern char *target_name; |
| 58 | |
| 59 | static int hashmark; /* flag set by "set hash" */ |
| 60 | |
| 61 | /* FIXME: Replace with sr_get_debug (). */ |
| 62 | #define LOG_FILE "monitor.log" |
| 63 | #if defined (LOG_FILE) |
| 64 | FILE *log_file; |
| 65 | #endif |
| 66 | |
| 67 | static int timeout = 24; |
| 68 | |
| 69 | /* Descriptor for I/O to remote machine. Initialize it to NULL so that |
| 70 | monitor_open knows that we don't have a file open when the program starts. |
| 71 | */ |
| 72 | static serial_t monitor_desc = NULL; |
| 73 | |
| 74 | /* sets the download protocol, choices are srec, generic, boot */ |
| 75 | char *loadtype; |
| 76 | static char *loadtype_str; |
| 77 | static void set_loadtype_command(); |
| 78 | static void monitor_load_srec(); |
| 79 | static int monitor_write_srec(); |
| 80 | |
| 81 | /* |
| 82 | * set_loadtype_command -- set the type for downloading. Check to make |
| 83 | * sure you have a support protocol for this target. |
| 84 | */ |
| 85 | static void |
| 86 | set_loadtype_command (ignore, from_tty, c) |
| 87 | char *ignore; |
| 88 | int from_tty; |
| 89 | struct cmd_list_element *c; |
| 90 | { |
| 91 | char *tmp; |
| 92 | char *type; |
| 93 | if (STREQ (LOADTYPES, "")) { |
| 94 | error ("No loadtype set"); |
| 95 | return; |
| 96 | } |
| 97 | |
| 98 | tmp = savestring (LOADTYPES, strlen(LOADTYPES)); |
| 99 | type = strtok(tmp, ","); |
| 100 | if (STREQ (type, (*(char **) c->var))) { |
| 101 | loadtype_str = savestring (*(char **) c->var, strlen (*(char **) c->var)); |
| 102 | return; |
| 103 | } |
| 104 | |
| 105 | while ((type = strtok (NULL, ",")) != (char *)NULL) { |
| 106 | if (STREQ (type, (*(char **) c->var))) |
| 107 | loadtype_str = savestring (*(char **) c->var, strlen (*(char **) c->var)); |
| 108 | return; |
| 109 | } |
| 110 | free (tmp); |
| 111 | error ("Loadtype \"%s\" does not exist.", (*(char **) c->var)); |
| 112 | } |
| 113 | |
| 114 | /* |
| 115 | * printf_monitor -- send data to monitor. Works just like printf. |
| 116 | */ |
| 117 | static void |
| 118 | printf_monitor(va_alist) |
| 119 | va_dcl |
| 120 | { |
| 121 | va_list args; |
| 122 | char *pattern; |
| 123 | char buf[200]; |
| 124 | int i; |
| 125 | |
| 126 | va_start(args); |
| 127 | |
| 128 | pattern = va_arg(args, char *); |
| 129 | |
| 130 | vsprintf(buf, pattern, args); |
| 131 | |
| 132 | debuglogs (1, "printf_monitor(), Sending: \"%s\".", buf); |
| 133 | |
| 134 | if (SERIAL_WRITE(monitor_desc, buf, strlen(buf))) |
| 135 | fprintf(stderr, "SERIAL_WRITE failed: %s\n", safe_strerror(errno)); |
| 136 | } |
| 137 | |
| 138 | /* |
| 139 | * debuglogs -- deal with debugging info to multiple sources. This takes |
| 140 | * two real args, the first one is the level to be compared against |
| 141 | * the sr_get_debug() value, the second arg is a printf buffer and args |
| 142 | * to be formatted and printed. A CR is added after each string is printed. |
| 143 | */ |
| 144 | static void |
| 145 | debuglogs(va_alist) |
| 146 | va_dcl |
| 147 | { |
| 148 | va_list args; |
| 149 | char *pattern, *p; |
| 150 | char buf[200]; |
| 151 | char newbuf[300]; |
| 152 | int level, i; |
| 153 | |
| 154 | va_start(args); |
| 155 | |
| 156 | level = va_arg(args, int); /* get the debug level */ |
| 157 | if ((level <0) || (level > 100)) { |
| 158 | error ("Bad argument passed to debuglogs()"); |
| 159 | return; |
| 160 | } |
| 161 | |
| 162 | pattern = va_arg(args, char *); /* get the printf style pattern */ |
| 163 | |
| 164 | vsprintf(buf, pattern, args); /* format the string */ |
| 165 | |
| 166 | /* convert some characters so it'll look right in the log */ |
| 167 | p = newbuf; |
| 168 | for (i=0 ; buf[i] != '\0'; i++) { |
| 169 | switch (buf[i]) { |
| 170 | case '\n': /* newlines */ |
| 171 | *p++ = '\\'; |
| 172 | *p++ = 'n'; |
| 173 | continue; |
| 174 | case '\r': /* carriage returns */ |
| 175 | *p++ = '\\'; |
| 176 | *p++ = 'r'; |
| 177 | continue; |
| 178 | case '\033': /* escape */ |
| 179 | *p++ = '\\'; |
| 180 | *p++ = 'e'; |
| 181 | continue; |
| 182 | case '\t': /* tab */ |
| 183 | *p++ = '\\'; |
| 184 | *p++ = 't'; |
| 185 | continue; |
| 186 | case '\b': /* backspace */ |
| 187 | *p++ = '\\'; |
| 188 | *p++ = 'b'; |
| 189 | continue; |
| 190 | default: /* no change */ |
| 191 | *p++ = buf[i]; |
| 192 | } |
| 193 | |
| 194 | if (buf[i] < 26) { /* modify control characters */ |
| 195 | *p++ = '^'; |
| 196 | *p++ = buf[i] + 'A'; |
| 197 | continue; |
| 198 | } |
| 199 | } |
| 200 | *p = '\0'; /* terminate the string */ |
| 201 | |
| 202 | if (sr_get_debug() > level) |
| 203 | puts (newbuf); |
| 204 | |
| 205 | #ifdef LOG_FILE /* write to the monitor log */ |
| 206 | if (log_file != 0x0) { |
| 207 | fputs (newbuf, log_file); |
| 208 | fputc ('\n', log_file); |
| 209 | fflush (log_file); |
| 210 | } |
| 211 | #endif |
| 212 | } |
| 213 | |
| 214 | /* readchar -- read a character from the remote system, doing all the fancy |
| 215 | * timeout stuff. |
| 216 | */ |
| 217 | static int |
| 218 | readchar(timeout) |
| 219 | int timeout; |
| 220 | { |
| 221 | int c; |
| 222 | |
| 223 | c = SERIAL_READCHAR(monitor_desc, timeout); |
| 224 | |
| 225 | if (sr_get_debug() > 4) |
| 226 | putchar(c & 0x7f); |
| 227 | |
| 228 | #ifdef LOG_FILE |
| 229 | if (isascii (c)) |
| 230 | putc(c & 0x7f, log_file); |
| 231 | #endif |
| 232 | |
| 233 | if (c >= 0) |
| 234 | return c & 0x7f; |
| 235 | |
| 236 | if (c == SERIAL_TIMEOUT) { |
| 237 | if (timeout == 0) |
| 238 | return c; /* Polls shouldn't generate timeout errors */ |
| 239 | error("Timeout reading from remote system."); |
| 240 | #ifdef LOG_FILE |
| 241 | fputc ("ERROR: Timeout reading from remote system", log_file); |
| 242 | #endif |
| 243 | } |
| 244 | perror_with_name("remote-monitor"); |
| 245 | } |
| 246 | |
| 247 | /* |
| 248 | * expect -- scan input from the remote system, until STRING is found. |
| 249 | * If DISCARD is non-zero, then discard non-matching input, else print |
| 250 | * it out. Let the user break out immediately. |
| 251 | */ |
| 252 | static void |
| 253 | expect (string, discard) |
| 254 | char *string; |
| 255 | int discard; |
| 256 | { |
| 257 | char *p = string; |
| 258 | int c; |
| 259 | |
| 260 | |
| 261 | debuglogs (1, "Expecting \"%s\".", string); |
| 262 | |
| 263 | immediate_quit = 1; |
| 264 | while (1) { |
| 265 | c = readchar(timeout); |
| 266 | if (!isascii (c)) |
| 267 | continue; |
| 268 | if (c == *p++) { |
| 269 | if (*p == '\0') { |
| 270 | immediate_quit = 0; |
| 271 | debuglogs (4, "Matched"); |
| 272 | return; |
| 273 | } |
| 274 | } else { |
| 275 | if (!discard) { |
| 276 | fwrite(string, 1, (p - 1) - string, stdout); |
| 277 | putchar((char)c); |
| 278 | fflush(stdout); |
| 279 | } |
| 280 | p = string; |
| 281 | } |
| 282 | } |
| 283 | } |
| 284 | |
| 285 | /* Keep discarding input until we see the MONITOR prompt. |
| 286 | |
| 287 | The convention for dealing with the prompt is that you |
| 288 | o give your command |
| 289 | o *then* wait for the prompt. |
| 290 | |
| 291 | Thus the last thing that a procedure does with the serial line |
| 292 | will be an expect_prompt(). Exception: monitor_resume does not |
| 293 | wait for the prompt, because the terminal is being handed over |
| 294 | to the inferior. However, the next thing which happens after that |
| 295 | is a monitor_wait which does wait for the prompt. |
| 296 | Note that this includes abnormal exit, e.g. error(). This is |
| 297 | necessary to prevent getting into states from which we can't |
| 298 | recover. */ |
| 299 | static void |
| 300 | expect_prompt(discard) |
| 301 | int discard; |
| 302 | { |
| 303 | #if defined (LOG_FILE) |
| 304 | /* This is a convenient place to do this. The idea is to do it often |
| 305 | enough that we never lose much data if we terminate abnormally. */ |
| 306 | fflush(log_file); |
| 307 | #endif |
| 308 | expect (PROMPT, discard); |
| 309 | } |
| 310 | |
| 311 | /* |
| 312 | * junk -- ignore junk characters. Returns a 1 if junk, 0 otherwise |
| 313 | */ |
| 314 | static int |
| 315 | junk(ch) |
| 316 | char ch; |
| 317 | { |
| 318 | switch (ch) { |
| 319 | case ' ': |
| 320 | case '-': |
| 321 | case '\t': |
| 322 | case '\r': |
| 323 | case '\n': |
| 324 | if (sr_get_debug() > 5) |
| 325 | debuglogs (5, "Ignoring \'%c\'.", ch); |
| 326 | return 1; |
| 327 | default: |
| 328 | if (sr_get_debug() > 5) |
| 329 | debuglogs (5, "Accepting \'%c\'.", ch); |
| 330 | return 0; |
| 331 | } |
| 332 | } |
| 333 | |
| 334 | /* |
| 335 | * get_hex_digit -- Get a hex digit from the remote system & return its value. |
| 336 | * If ignore is nonzero, ignore spaces, newline & tabs. |
| 337 | */ |
| 338 | static int |
| 339 | get_hex_digit(ignore) |
| 340 | int ignore; |
| 341 | { |
| 342 | static int ch; |
| 343 | while (1) { |
| 344 | ch = readchar(timeout); |
| 345 | if (junk(ch)) |
| 346 | continue; |
| 347 | if (sr_get_debug() > 4) |
| 348 | debuglogs (4, "get_hex_digit() got a 0x%x(%c)", ch, ch); |
| 349 | |
| 350 | if (ch >= '0' && ch <= '9') |
| 351 | return ch - '0'; |
| 352 | else if (ch >= 'A' && ch <= 'F') |
| 353 | return ch - 'A' + 10; |
| 354 | else if (ch >= 'a' && ch <= 'f') |
| 355 | return ch - 'a' + 10; |
| 356 | else if (ch == ' ' && ignore) |
| 357 | ; |
| 358 | else { |
| 359 | expect_prompt(1); |
| 360 | error("Invalid hex digit from remote system."); |
| 361 | } |
| 362 | } |
| 363 | } |
| 364 | |
| 365 | /* get_hex_byte -- Get a byte from monitor and put it in *BYT. |
| 366 | * Accept any number leading spaces. |
| 367 | */ |
| 368 | static void |
| 369 | get_hex_byte (byt) |
| 370 | char *byt; |
| 371 | { |
| 372 | int val; |
| 373 | |
| 374 | val = get_hex_digit (1) << 4; |
| 375 | debuglogs (4, "get_hex_digit() -- Read first nibble 0x%x", val); |
| 376 | |
| 377 | val |= get_hex_digit (0); |
| 378 | debuglogs (4, "get_hex_digit() -- Read second nibble 0x%x", val); |
| 379 | *byt = val; |
| 380 | |
| 381 | debuglogs (4, "get_hex_digit() -- Read a 0x%x", val); |
| 382 | } |
| 383 | |
| 384 | /* |
| 385 | * get_hex_word -- Get N 32-bit words from remote, each preceded by a space, |
| 386 | * and put them in registers starting at REGNO. |
| 387 | */ |
| 388 | static int |
| 389 | get_hex_word () |
| 390 | { |
| 391 | long val; |
| 392 | int i; |
| 393 | |
| 394 | val = 0; |
| 395 | for (i = 0; i < 8; i++) |
| 396 | val = (val << 4) + get_hex_digit (i == 0); |
| 397 | |
| 398 | debuglogs (4, "get_hex_word() got a 0x%x.", val); |
| 399 | |
| 400 | return val; |
| 401 | } |
| 402 | |
| 403 | /* This is called not only when we first attach, but also when the |
| 404 | user types "run" after having attached. */ |
| 405 | void |
| 406 | monitor_create_inferior (execfile, args, env) |
| 407 | char *execfile; |
| 408 | char *args; |
| 409 | char **env; |
| 410 | { |
| 411 | int entry_pt; |
| 412 | |
| 413 | if (args && *args) |
| 414 | error("Can't pass arguments to remote MONITOR process"); |
| 415 | |
| 416 | if (execfile == 0 || exec_bfd == 0) |
| 417 | error("No exec file specified"); |
| 418 | |
| 419 | entry_pt = (int) bfd_get_start_address (exec_bfd); |
| 420 | |
| 421 | debuglogs (1, "create_inferior(exexfile=%s, args=%s, env=%s)", execfile, args, env); |
| 422 | |
| 423 | /* The "process" (board) is already stopped awaiting our commands, and |
| 424 | the program is already downloaded. We just set its PC and go. */ |
| 425 | |
| 426 | clear_proceed_status (); |
| 427 | |
| 428 | /* Tell wait_for_inferior that we've started a new process. */ |
| 429 | init_wait_for_inferior (); |
| 430 | |
| 431 | /* Set up the "saved terminal modes" of the inferior |
| 432 | based on what modes we are starting it with. */ |
| 433 | target_terminal_init (); |
| 434 | |
| 435 | /* Install inferior's terminal modes. */ |
| 436 | target_terminal_inferior (); |
| 437 | |
| 438 | /* insert_step_breakpoint (); FIXME, do we need this? */ |
| 439 | |
| 440 | /* Let 'er rip... */ |
| 441 | proceed ((CORE_ADDR)entry_pt, TARGET_SIGNAL_DEFAULT, 0); |
| 442 | } |
| 443 | |
| 444 | /* |
| 445 | * monitor_open -- open a connection to a remote debugger. |
| 446 | * NAME is the filename used for communication. |
| 447 | */ |
| 448 | static int baudrate = 9600; |
| 449 | static char dev_name[100]; |
| 450 | |
| 451 | void |
| 452 | monitor_open(args, name, from_tty) |
| 453 | char *args; |
| 454 | char *name; |
| 455 | int from_tty; |
| 456 | { |
| 457 | |
| 458 | if (args == NULL) |
| 459 | error ("Use `target %s DEVICE-NAME' to use a serial port, or \n\ |
| 460 | `target %s HOST-NAME:PORT-NUMBER' to use a network connection.", name, name); |
| 461 | |
| 462 | /* if (is_open) */ |
| 463 | monitor_close(0); |
| 464 | |
| 465 | strcpy(dev_name, args); |
| 466 | monitor_desc = SERIAL_OPEN(dev_name); |
| 467 | |
| 468 | if (monitor_desc == NULL) |
| 469 | perror_with_name(dev_name); |
| 470 | |
| 471 | if (baud_rate != -1) { |
| 472 | if (SERIAL_SETBAUDRATE (monitor_desc, baud_rate)) { |
| 473 | SERIAL_CLOSE (monitor_desc); |
| 474 | perror_with_name (name); |
| 475 | } |
| 476 | } |
| 477 | |
| 478 | SERIAL_RAW(monitor_desc); |
| 479 | |
| 480 | #if defined (LOG_FILE) |
| 481 | log_file = fopen (LOG_FILE, "w"); |
| 482 | if (log_file == NULL) |
| 483 | perror_with_name (LOG_FILE); |
| 484 | fprintf_filtered (log_file, "GDB %s (%s", version, host_name); |
| 485 | fprintf_filtered (log_file, " --target %s)\n", target_name); |
| 486 | fprintf_filtered (log_file, "Remote target %s connected to %s\n\n", TARGET_NAME, dev_name); |
| 487 | #endif |
| 488 | |
| 489 | /* wake up the monitor and see if it's alive */ |
| 490 | printf_monitor(INIT_CMD); |
| 491 | expect_prompt(1); /* See if we get a prompt */ |
| 492 | |
| 493 | /* try again to be sure */ |
| 494 | printf_monitor(INIT_CMD); |
| 495 | expect_prompt(1); /* See if we get a prompt */ |
| 496 | |
| 497 | if (from_tty) |
| 498 | printf("Remote target %s connected to %s\n", TARGET_NAME, dev_name); |
| 499 | } |
| 500 | |
| 501 | /* |
| 502 | * monitor_close -- Close out all files and local state before this |
| 503 | * target loses control. |
| 504 | */ |
| 505 | |
| 506 | void |
| 507 | monitor_close (quitting) |
| 508 | int quitting; |
| 509 | { |
| 510 | SERIAL_CLOSE(monitor_desc); |
| 511 | monitor_desc = NULL; |
| 512 | |
| 513 | debuglogs (1, "monitor_close (quitting=%d)", quitting); |
| 514 | |
| 515 | #if defined (LOG_FILE) |
| 516 | if (log_file) { |
| 517 | if (ferror(log_file)) |
| 518 | fprintf(stderr, "Error writing log file.\n"); |
| 519 | if (fclose(log_file) != 0) |
| 520 | fprintf(stderr, "Error closing log file.\n"); |
| 521 | } |
| 522 | #endif |
| 523 | } |
| 524 | |
| 525 | /* |
| 526 | * monitor_detach -- terminate the open connection to the remote |
| 527 | * debugger. Use this when you want to detach and do something |
| 528 | * else with your gdb. |
| 529 | */ |
| 530 | void |
| 531 | monitor_detach (from_tty) |
| 532 | int from_tty; |
| 533 | { |
| 534 | |
| 535 | debuglogs (1, "monitor_detach ()"); |
| 536 | |
| 537 | pop_target(); /* calls monitor_close to do the real work */ |
| 538 | if (from_tty) |
| 539 | printf ("Ending remote %s debugging\n", target_shortname); |
| 540 | } |
| 541 | |
| 542 | /* |
| 543 | * monitor_attach -- attach GDB to the target. |
| 544 | */ |
| 545 | void |
| 546 | monitor_attach (args, from_tty) |
| 547 | char *args; |
| 548 | int from_tty; |
| 549 | { |
| 550 | if (from_tty) |
| 551 | printf ("Starting remote %s debugging\n", target_shortname); |
| 552 | |
| 553 | debuglogs (1, "monitor_attach (args=%s)", args); |
| 554 | |
| 555 | printf_monitor (GO_CMD); |
| 556 | /* swallow the echo. */ |
| 557 | expect (GO_CMD, 1); |
| 558 | } |
| 559 | |
| 560 | /* |
| 561 | * monitor_resume -- Tell the remote machine to resume. |
| 562 | */ |
| 563 | void |
| 564 | monitor_resume (pid, step, sig) |
| 565 | int pid, step; |
| 566 | enum target_signal sig; |
| 567 | { |
| 568 | debuglogs (1, "monitor_resume (step=%d, sig=%d)", step, sig); |
| 569 | |
| 570 | if (step) { |
| 571 | printf_monitor (STEP_CMD); |
| 572 | } else { |
| 573 | printf_monitor (CONT_CMD); |
| 574 | } |
| 575 | } |
| 576 | |
| 577 | /* |
| 578 | * monitor_wait -- Wait until the remote machine stops, then return, |
| 579 | * storing status in status just as `wait' would. |
| 580 | */ |
| 581 | int |
| 582 | monitor_wait (pid, status) |
| 583 | int pid; |
| 584 | struct target_waitstatus *status; |
| 585 | { |
| 586 | int old_timeout = timeout; |
| 587 | |
| 588 | debuglogs(1, "monitor_wait (), printing extraneous text."); |
| 589 | |
| 590 | status->kind = TARGET_WAITKIND_EXITED; |
| 591 | status->value.integer = 0; |
| 592 | |
| 593 | timeout = 0; /* Don't time out -- user program is running. */ |
| 594 | |
| 595 | expect_prompt(0); /* Wait for prompt, outputting extraneous text */ |
| 596 | debuglogs (4, "monitor_wait(), got the prompt."); |
| 597 | |
| 598 | status->kind = TARGET_WAITKIND_STOPPED; |
| 599 | status->value.sig = TARGET_SIGNAL_TRAP; |
| 600 | |
| 601 | timeout = old_timeout; |
| 602 | |
| 603 | return 0; |
| 604 | } |
| 605 | |
| 606 | /* Return the name of register number regno in the form input and output by |
| 607 | monitor. Currently, register_names just happens to contain exactly what |
| 608 | monitor wants. Lets take advantage of that just as long as possible! */ |
| 609 | |
| 610 | static char * |
| 611 | get_reg_name (regno) |
| 612 | int regno; |
| 613 | { |
| 614 | static char buf[50]; |
| 615 | const char *p; |
| 616 | char *b; |
| 617 | |
| 618 | b = buf; |
| 619 | |
| 620 | if (regno < 0) |
| 621 | return (""); |
| 622 | |
| 623 | for (p = REGNAMES(regno); *p; p++) |
| 624 | *b++ = tolower(*p); |
| 625 | |
| 626 | *b = '\000'; |
| 627 | |
| 628 | debuglogs (5, "Got name \"%s\" from regno #%d.", buf, regno); |
| 629 | |
| 630 | return buf; |
| 631 | } |
| 632 | |
| 633 | /* |
| 634 | * monitor_fetch_registers -- read the remote registers into the |
| 635 | * block regs. |
| 636 | */ |
| 637 | void |
| 638 | monitor_fetch_registers () |
| 639 | { |
| 640 | int regno; |
| 641 | |
| 642 | /* yeah yeah, i know this is horribly inefficient. but it isn't done |
| 643 | very often... i'll clean it up later. */ |
| 644 | |
| 645 | for (regno = 0; regno <= PC_REGNUM; regno++) |
| 646 | monitor_fetch_register(regno); |
| 647 | } |
| 648 | |
| 649 | /* |
| 650 | * monitor_fetch_register -- fetch register REGNO, or all registers if REGNO |
| 651 | * is -1. Returns errno value. |
| 652 | */ |
| 653 | void |
| 654 | monitor_fetch_register (regno) |
| 655 | int regno; |
| 656 | { |
| 657 | int val, j; |
| 658 | |
| 659 | debuglogs (1, "monitor_fetch_register (reg=%s)", get_reg_name (regno)); |
| 660 | |
| 661 | if (regno < 0) { |
| 662 | monitor_fetch_registers (); |
| 663 | } else { |
| 664 | char *name = get_reg_name (regno); |
| 665 | if (STREQ(name, "")) |
| 666 | return; |
| 667 | printf_monitor (ROMCMD(GET_REG), name); /* send the command */ |
| 668 | expect (name, 1); /* then strip the leading garbage */ |
| 669 | if (*ROMDELIM(GET_REG) != 0) { /* if there's a delimiter */ |
| 670 | expect (ROMDELIM(GET_REG), 1); |
| 671 | } |
| 672 | |
| 673 | val = get_hex_word(); /* get the value, ignore junk */ |
| 674 | supply_register (regno, (char *) &val); |
| 675 | |
| 676 | if (*ROMDELIM(GET_REG) != 0) { |
| 677 | /*** expect (ROMRES(GET_REG)); ***/ |
| 678 | printf_monitor (CMD_END); |
| 679 | } |
| 680 | expect_prompt (1); |
| 681 | } |
| 682 | return; |
| 683 | } |
| 684 | |
| 685 | /* Store the remote registers from the contents of the block REGS. */ |
| 686 | |
| 687 | void |
| 688 | monitor_store_registers () |
| 689 | { |
| 690 | int regno; |
| 691 | |
| 692 | debuglogs (1, "monitor_store_registers()"); |
| 693 | |
| 694 | for (regno = 0; regno <= PC_REGNUM; regno++) |
| 695 | monitor_store_register(regno); |
| 696 | |
| 697 | registers_changed (); |
| 698 | } |
| 699 | |
| 700 | /* |
| 701 | * monitor_store_register -- store register REGNO, or all if REGNO == 0. |
| 702 | * return errno value. |
| 703 | */ |
| 704 | void |
| 705 | monitor_store_register (regno) |
| 706 | int regno; |
| 707 | { |
| 708 | char *name; |
| 709 | int i; |
| 710 | |
| 711 | i = read_register(regno); |
| 712 | |
| 713 | debuglogs (1, "monitor_store_register (regno=%d)", regno); |
| 714 | |
| 715 | if (regno < 0) |
| 716 | monitor_store_registers (); |
| 717 | else { |
| 718 | debuglogs (3, "Setting register %s to 0x%x", get_reg_name (regno), read_register (regno)); |
| 719 | |
| 720 | name = get_reg_name (regno); |
| 721 | if (STREQ(name, "")) |
| 722 | return; |
| 723 | printf_monitor (ROMCMD(SET_REG), name, read_register(regno)); |
| 724 | expect (name, 1); /* strip the leading garbage */ |
| 725 | if (*ROMDELIM(SET_REG) != 0) { /* if there's a delimiter */ |
| 726 | expect (ROMDELIM(SET_REG), 1); |
| 727 | get_hex_word(1); |
| 728 | printf_monitor ("%d%s\n", i, CMD_END); |
| 729 | } |
| 730 | expect_prompt (1); |
| 731 | } |
| 732 | return; |
| 733 | |
| 734 | #if 0 |
| 735 | printf_monitor (SET_REG, get_reg_name (regno), |
| 736 | read_register (regno)); |
| 737 | expect_prompt (1); |
| 738 | } |
| 739 | #endif |
| 740 | } |
| 741 | |
| 742 | /* Get ready to modify the registers array. On machines which store |
| 743 | individual registers, this doesn't need to do anything. On machines |
| 744 | which store all the registers in one fell swoop, this makes sure |
| 745 | that registers contains all the registers from the program being |
| 746 | debugged. */ |
| 747 | |
| 748 | void |
| 749 | monitor_prepare_to_store () |
| 750 | { |
| 751 | /* Do nothing, since we can store individual regs */ |
| 752 | } |
| 753 | |
| 754 | void |
| 755 | monitor_files_info () |
| 756 | { |
| 757 | printf ("\tAttached to %s at %d baud.\n", |
| 758 | dev_name, baudrate); |
| 759 | } |
| 760 | |
| 761 | /* |
| 762 | * monitor_write_inferior_memory -- Copy LEN bytes of data from debugger |
| 763 | * memory at MYADDR to inferior's memory at MEMADDR. Returns length moved. |
| 764 | */ |
| 765 | int |
| 766 | monitor_write_inferior_memory (memaddr, myaddr, len) |
| 767 | CORE_ADDR memaddr; |
| 768 | unsigned char *myaddr; |
| 769 | int len; |
| 770 | { |
| 771 | int i; |
| 772 | char buf[10]; |
| 773 | |
| 774 | debuglogs (1, "monitor_write_inferior_memory (memaddr=0x%x, myaddr=0x%x, len=%d)", memaddr, myaddr, len); |
| 775 | |
| 776 | for (i = 0; i < len; i++) { |
| 777 | printf_monitor (ROMCMD(SET_MEM), memaddr + i, myaddr[i] ); |
| 778 | if (*ROMDELIM(SET_MEM) != 0) { /* if there's a delimiter */ |
| 779 | expect (ROMDELIM(SET_MEM), 1); |
| 780 | expect (CMD_DELIM); |
| 781 | printf_monitor ("%x", myaddr[i]); |
| 782 | } |
| 783 | /*** printf_monitor ("%x", myaddr[i]); ***/ |
| 784 | if (sr_get_debug() > 1) |
| 785 | printf ("\nSet 0x%x to 0x%x\n", memaddr + i, myaddr[i]); |
| 786 | if (*ROMDELIM(SET_MEM) != 0) { |
| 787 | expect (CMD_DELIM); |
| 788 | printf_monitor (CMD_END); |
| 789 | } |
| 790 | expect_prompt (1); |
| 791 | } |
| 792 | return len; |
| 793 | } |
| 794 | |
| 795 | /* |
| 796 | * monitor_read_inferior_memory -- read LEN bytes from inferior memory |
| 797 | * at MEMADDR. Put the result at debugger address MYADDR. Returns |
| 798 | * length moved. |
| 799 | */ |
| 800 | int |
| 801 | monitor_read_inferior_memory(memaddr, myaddr, len) |
| 802 | CORE_ADDR memaddr; |
| 803 | char *myaddr; |
| 804 | int len; |
| 805 | { |
| 806 | int i, j; |
| 807 | char buf[20]; |
| 808 | |
| 809 | /* Number of bytes read so far. */ |
| 810 | int count; |
| 811 | |
| 812 | /* Starting address of this pass. */ |
| 813 | unsigned long startaddr; |
| 814 | |
| 815 | /* Number of bytes to read in this pass. */ |
| 816 | int len_this_pass; |
| 817 | |
| 818 | debuglogs (1, "monitor_read_inferior_memory (memaddr=0x%x, myaddr=0x%x, len=%d)", memaddr, myaddr, len); |
| 819 | |
| 820 | /* Note that this code works correctly if startaddr is just less |
| 821 | than UINT_MAX (well, really CORE_ADDR_MAX if there was such a |
| 822 | thing). That is, something like |
| 823 | monitor_read_bytes (CORE_ADDR_MAX - 4, foo, 4) |
| 824 | works--it never adds len To memaddr and gets 0. */ |
| 825 | /* However, something like |
| 826 | monitor_read_bytes (CORE_ADDR_MAX - 3, foo, 4) |
| 827 | doesn't need to work. Detect it and give up if there's an attempt |
| 828 | to do that. */ |
| 829 | if (((memaddr - 1) + len) < memaddr) { |
| 830 | errno = EIO; |
| 831 | return 0; |
| 832 | } |
| 833 | |
| 834 | startaddr = memaddr; |
| 835 | count = 0; |
| 836 | while (count < len) { |
| 837 | len_this_pass = 16; |
| 838 | if ((startaddr % 16) != 0) |
| 839 | len_this_pass -= startaddr % 16; |
| 840 | if (len_this_pass > (len - count)) |
| 841 | len_this_pass = (len - count); |
| 842 | |
| 843 | debuglogs (3, "Display %d bytes at %x", len_this_pass, startaddr); |
| 844 | |
| 845 | for (i = 0; i < len_this_pass; i++) { |
| 846 | printf_monitor (ROMCMD(GET_MEM), startaddr, startaddr); |
| 847 | sprintf (buf, ROMCMD(GET_MEM), startaddr, startaddr); |
| 848 | if (*ROMDELIM(GET_MEM) != 0) { /* if there's a delimiter */ |
| 849 | expect (ROMDELIM(GET_MEM), 1); |
| 850 | } else { |
| 851 | sprintf (buf, ROMCMD(GET_MEM), startaddr, startaddr); |
| 852 | expect (buf,1); /* get the command echo */ |
| 853 | get_hex_word(1); /* strip away the address */ |
| 854 | } |
| 855 | get_hex_byte (&myaddr[count++]); /* get the value at this address */ |
| 856 | |
| 857 | if (*ROMDELIM(GET_MEM) != 0) { |
| 858 | printf_monitor (CMD_END); |
| 859 | } |
| 860 | expect_prompt (1); |
| 861 | startaddr += 1; |
| 862 | } |
| 863 | } |
| 864 | return len; |
| 865 | } |
| 866 | |
| 867 | /* FIXME-someday! merge these two. */ |
| 868 | int |
| 869 | monitor_xfer_inferior_memory (memaddr, myaddr, len, write, target) |
| 870 | CORE_ADDR memaddr; |
| 871 | char *myaddr; |
| 872 | int len; |
| 873 | int write; |
| 874 | struct target_ops *target; /* ignored */ |
| 875 | { |
| 876 | if (write) |
| 877 | return monitor_write_inferior_memory (memaddr, myaddr, len); |
| 878 | else |
| 879 | return monitor_read_inferior_memory (memaddr, myaddr, len); |
| 880 | } |
| 881 | |
| 882 | void |
| 883 | monitor_kill (args, from_tty) |
| 884 | char *args; |
| 885 | int from_tty; |
| 886 | { |
| 887 | return; /* ignore attempts to kill target system */ |
| 888 | } |
| 889 | |
| 890 | /* Clean up when a program exits. |
| 891 | The program actually lives on in the remote processor's RAM, and may be |
| 892 | run again without a download. Don't leave it full of breakpoint |
| 893 | instructions. */ |
| 894 | |
| 895 | void |
| 896 | monitor_mourn_inferior () |
| 897 | { |
| 898 | remove_breakpoints (); |
| 899 | generic_mourn_inferior (); /* Do all the proper things now */ |
| 900 | } |
| 901 | |
| 902 | #define MAX_MONITOR_BREAKPOINTS 16 |
| 903 | |
| 904 | extern int memory_breakpoint_size; |
| 905 | static CORE_ADDR breakaddr[MAX_MONITOR_BREAKPOINTS] = {0}; |
| 906 | |
| 907 | /* |
| 908 | * monitor_insert_breakpoint -- add a breakpoint |
| 909 | */ |
| 910 | int |
| 911 | monitor_insert_breakpoint (addr, shadow) |
| 912 | CORE_ADDR addr; |
| 913 | char *shadow; |
| 914 | { |
| 915 | int i; |
| 916 | |
| 917 | debuglogs (1, "monitor_insert_breakpoint() addr = 0x%x", addr); |
| 918 | |
| 919 | for (i = 0; i <= MAX_MONITOR_BREAKPOINTS; i++) { |
| 920 | if (breakaddr[i] == 0) { |
| 921 | breakaddr[i] = addr; |
| 922 | if (sr_get_debug() > 4) |
| 923 | printf ("Breakpoint at %x\n", addr); |
| 924 | monitor_read_inferior_memory(addr, shadow, memory_breakpoint_size); |
| 925 | printf_monitor(SET_BREAK_CMD, addr); |
| 926 | expect_prompt(1); |
| 927 | return 0; |
| 928 | } |
| 929 | } |
| 930 | |
| 931 | fprintf(stderr, "Too many breakpoints (> 16) for monitor\n"); |
| 932 | return 1; |
| 933 | } |
| 934 | |
| 935 | /* |
| 936 | * _remove_breakpoint -- Tell the monitor to remove a breakpoint |
| 937 | */ |
| 938 | int |
| 939 | monitor_remove_breakpoint (addr, shadow) |
| 940 | CORE_ADDR addr; |
| 941 | char *shadow; |
| 942 | { |
| 943 | int i; |
| 944 | |
| 945 | debuglogs (1, "monitor_remove_breakpoint() addr = 0x%x", addr); |
| 946 | |
| 947 | for (i = 0; i < MAX_MONITOR_BREAKPOINTS; i++) { |
| 948 | if (breakaddr[i] == addr) { |
| 949 | breakaddr[i] = 0; |
| 950 | /* some monitors remove breakpoints based on the address */ |
| 951 | if (CLR_BREAK_ADDR) |
| 952 | printf_monitor(CLR_BREAK_CMD, addr); |
| 953 | else |
| 954 | printf_monitor(CLR_BREAK_CMD, i); |
| 955 | expect_prompt(1); |
| 956 | return 0; |
| 957 | } |
| 958 | } |
| 959 | fprintf(stderr, "Can't find breakpoint associated with 0x%x\n", addr); |
| 960 | return 1; |
| 961 | } |
| 962 | |
| 963 | /* monitor_load -- load a file. This file determines which of the |
| 964 | * supported formats to use. The current types are: |
| 965 | * FIXME: not all types supported yet. |
| 966 | * default - reads any file using bfd and writes it to memory. |
| 967 | * srec - reads binary file using bfd and writes it as an |
| 968 | * ascii srecord. |
| 969 | * xmodem-bin - reads a binary file using bfd, and downloads it |
| 970 | * using xmodem protocol. |
| 971 | * xmodem-srec - reads a binary file using bfd, and after converting |
| 972 | * it downloads it as an srecord using xmodem protocol. |
| 973 | * ascii-srec - reads a ascii srecord file and downloads it |
| 974 | * without a change. |
| 975 | * ascii-xmodem - reads a ascii file and downloads using xmodem |
| 976 | * protocol. |
| 977 | */ |
| 978 | void |
| 979 | monitor_load (file, fromtty) |
| 980 | char *file; |
| 981 | int fromtty; |
| 982 | { |
| 983 | FILE *download; |
| 984 | int i, bytes_read; |
| 985 | |
| 986 | debuglogs (1, "Loading %s to monitor", file); |
| 987 | |
| 988 | if (STREQ (loadtype_str, "default")) { /* default, load a binary */ |
| 989 | gr_load_image (file, fromtty); /* by writing it into memory */ |
| 990 | } |
| 991 | |
| 992 | if (STREQ (loadtype_str, "srec")) { /* load an srecord by converting */ |
| 993 | monitor_load_srec(file, fromtty); /* if from a binary */ |
| 994 | } |
| 995 | |
| 996 | if (STREQ (loadtype_str, "ascii-srec")) { /* load an srecord file */ |
| 997 | monitor_load_ascii_srec(file, fromtty); /* if from a binary */ |
| 998 | } |
| 999 | |
| 1000 | if (STREQ (loadtype_str, "xmodem-srec")) { /* load an srecord using the */ |
| 1001 | error ("This protocol is not implemented yet."); /* xmodem protocol */ |
| 1002 | } |
| 1003 | } |
| 1004 | |
| 1005 | /* |
| 1006 | * monitor_load_ascii_srec -- download an ASCII srecord file. |
| 1007 | */ |
| 1008 | #define DOWNLOAD_LINE_SIZE 100 |
| 1009 | int |
| 1010 | monitor_load_ascii_srec (file, fromtty) |
| 1011 | char *file; |
| 1012 | int fromtty; |
| 1013 | { |
| 1014 | FILE *download; |
| 1015 | char buf[DOWNLOAD_LINE_SIZE]; |
| 1016 | int i, bytes_read; |
| 1017 | |
| 1018 | debuglogs (1, "Loading an ASCII srecord file, %s.", file); |
| 1019 | |
| 1020 | download = fopen (file, "r"); |
| 1021 | if (download == NULL) { |
| 1022 | error ("%s Does not exist", file); |
| 1023 | return; |
| 1024 | } |
| 1025 | |
| 1026 | printf_monitor (LOAD_CMD); |
| 1027 | |
| 1028 | while (!feof (download)) { |
| 1029 | bytes_read = fread (buf, sizeof (char), DOWNLOAD_LINE_SIZE, download); |
| 1030 | if (hashmark) { |
| 1031 | putchar ('.'); |
| 1032 | fflush (stdout); |
| 1033 | } |
| 1034 | if (SERIAL_WRITE(monitor_desc, buf, bytes_read)) { |
| 1035 | fprintf(stderr, "SERIAL_WRITE failed: (while downloading) %s\n", safe_strerror(errno)); |
| 1036 | break; |
| 1037 | } |
| 1038 | i = 0; |
| 1039 | while (i++ <=200) {} ; /* Ugly HACK, probably needs flow control */ |
| 1040 | if (bytes_read < DOWNLOAD_LINE_SIZE) { |
| 1041 | if (!feof (download)) |
| 1042 | error ("Only read %d bytes\n", bytes_read); |
| 1043 | break; |
| 1044 | } |
| 1045 | } |
| 1046 | |
| 1047 | if (hashmark) { |
| 1048 | putchar ('\n'); |
| 1049 | } |
| 1050 | if (!feof (download)) |
| 1051 | error ("Never got EOF while downloading"); |
| 1052 | expect_prompt(1); |
| 1053 | fclose (download); |
| 1054 | } |
| 1055 | |
| 1056 | /* |
| 1057 | * monitor_command -- put a command string, in args, out to MONITOR. |
| 1058 | * Output from MONITOR is placed on the users terminal until the |
| 1059 | * prompt is seen. FIXME: We read the charcters ourseleves here |
| 1060 | * cause of a nasty echo. |
| 1061 | */ |
| 1062 | void |
| 1063 | monitor_command (args, fromtty) |
| 1064 | char *args; |
| 1065 | int fromtty; |
| 1066 | { |
| 1067 | |
| 1068 | char *p; |
| 1069 | char c, cp; |
| 1070 | p = PROMPT; |
| 1071 | |
| 1072 | debuglogs (1, "monitor_command (args=%s)", args); |
| 1073 | |
| 1074 | if (monitor_desc == NULL) |
| 1075 | error("monitor target not open."); |
| 1076 | |
| 1077 | if (!args) |
| 1078 | error("Missing command."); |
| 1079 | |
| 1080 | printf_monitor ("%s\n", args); |
| 1081 | |
| 1082 | expect_prompt(0); |
| 1083 | } |
| 1084 | |
| 1085 | /* |
| 1086 | * monitor_load_srec -- download a binary file by converting it to srecords. |
| 1087 | */ |
| 1088 | static void |
| 1089 | monitor_load_srec (args, fromtty) |
| 1090 | char *args; |
| 1091 | int fromtty; |
| 1092 | { |
| 1093 | bfd *abfd; |
| 1094 | asection *s; |
| 1095 | char buffer[1024]; |
| 1096 | int srec_frame = SREC_SIZE; |
| 1097 | |
| 1098 | abfd = bfd_openr (args, 0); |
| 1099 | if (!abfd) { |
| 1100 | printf_filtered ("Unable to open file %s\n", args); |
| 1101 | return; |
| 1102 | } |
| 1103 | |
| 1104 | if (bfd_check_format (abfd, bfd_object) == 0) { |
| 1105 | printf_filtered ("File is not an object file\n"); |
| 1106 | return; |
| 1107 | } |
| 1108 | |
| 1109 | s = abfd->sections; |
| 1110 | while (s != (asection *) NULL) { |
| 1111 | srec_frame = SREC_SIZE; |
| 1112 | if (s->flags & SEC_LOAD) { |
| 1113 | int i; |
| 1114 | char *buffer = xmalloc (srec_frame); |
| 1115 | printf_filtered ("%s\t: 0x%4x .. 0x%4x ", s->name, s->vma, s->vma + s |
| 1116 | ->_raw_size); |
| 1117 | fflush (stdout); |
| 1118 | for (i = 0; i < s->_raw_size; i += srec_frame) { |
| 1119 | if (srec_frame > s->_raw_size - i) |
| 1120 | srec_frame = s->_raw_size - i; |
| 1121 | |
| 1122 | bfd_get_section_contents (abfd, s, buffer, i, srec_frame); |
| 1123 | monitor_write_srec (s->vma + i, buffer, srec_frame); |
| 1124 | printf_filtered ("*"); |
| 1125 | fflush (stdout); |
| 1126 | } |
| 1127 | printf_filtered ("\n"); |
| 1128 | free (buffer); |
| 1129 | } |
| 1130 | s = s->next; |
| 1131 | } |
| 1132 | sprintf (buffer, "rs ip %lx", (unsigned long) abfd->start_address); |
| 1133 | printf_monitor (buffer); |
| 1134 | expect_prompt (); |
| 1135 | } |
| 1136 | |
| 1137 | |
| 1138 | static int |
| 1139 | monitor_write_srec (memaddr, myaddr, len) |
| 1140 | CORE_ADDR memaddr; |
| 1141 | unsigned char *myaddr; |
| 1142 | int len; |
| 1143 | { |
| 1144 | int done; |
| 1145 | int checksum; |
| 1146 | int x; |
| 1147 | int retries; |
| 1148 | int srec_bytes = 40; |
| 1149 | int srec_max_retries = 3; |
| 1150 | int srec_echo_pace = 0; |
| 1151 | int srec_sleep = 0; |
| 1152 | int srec_noise = 0; |
| 1153 | char *buffer = alloca ((srec_bytes + 8) << 1); |
| 1154 | |
| 1155 | retries = 0; |
| 1156 | |
| 1157 | while (1) { /* FIXME !!! */ |
| 1158 | done = 0; |
| 1159 | |
| 1160 | if (retries > srec_max_retries) |
| 1161 | return(-1); |
| 1162 | |
| 1163 | if (retries > 0) { |
| 1164 | if (sr_get_debug() > 0) |
| 1165 | printf("\n<retrying...>\n"); |
| 1166 | |
| 1167 | /* This gr_expect_prompt call is extremely important. Without |
| 1168 | it, we will tend to resend our packet so fast that it |
| 1169 | will arrive before the bug monitor is ready to receive |
| 1170 | it. This would lead to a very ugly resend loop. */ |
| 1171 | |
| 1172 | gr_expect_prompt(); |
| 1173 | } |
| 1174 | |
| 1175 | /* FIXME: this is just start_load pasted in... */ |
| 1176 | { char *command; |
| 1177 | command = (srec_echo_pace ? "lo 0 ;x" : "lo 0"); |
| 1178 | sr_write_cr (command); |
| 1179 | sr_expect (command); |
| 1180 | sr_expect ("\r\n"); |
| 1181 | #if 0 |
| 1182 | bug_srec_write_cr ("S0030000FC"); |
| 1183 | #endif |
| 1184 | } |
| 1185 | /* end of hack */ |
| 1186 | |
| 1187 | while (done < len) { |
| 1188 | int thisgo; |
| 1189 | int idx; |
| 1190 | char *buf = buffer; |
| 1191 | CORE_ADDR address; |
| 1192 | |
| 1193 | checksum = 0; |
| 1194 | thisgo = len - done; |
| 1195 | if (thisgo > srec_bytes) |
| 1196 | thisgo = srec_bytes; |
| 1197 | |
| 1198 | address = memaddr + done; |
| 1199 | sprintf (buf, "S3%02X%08X", thisgo + 4 + 1, address); |
| 1200 | buf += 12; |
| 1201 | |
| 1202 | checksum += (thisgo + 4 + 1 |
| 1203 | + (address & 0xff) |
| 1204 | + ((address >> 8) & 0xff) |
| 1205 | + ((address >> 16) & 0xff) |
| 1206 | + ((address >> 24) & 0xff)); |
| 1207 | |
| 1208 | for (idx = 0; idx < thisgo; idx++) { |
| 1209 | sprintf (buf, "%02X", myaddr[idx + done]); |
| 1210 | checksum += myaddr[idx + done]; |
| 1211 | buf += 2; |
| 1212 | } |
| 1213 | |
| 1214 | if (srec_noise > 0) { |
| 1215 | /* FIXME-NOW: insert a deliberate error every now and then. |
| 1216 | This is intended for testing/debugging the error handling |
| 1217 | stuff. */ |
| 1218 | static int counter = 0; |
| 1219 | if (++counter > srec_noise) { |
| 1220 | counter = 0; |
| 1221 | ++checksum; |
| 1222 | } |
| 1223 | } |
| 1224 | |
| 1225 | sprintf(buf, "%02X", ~checksum & 0xff); |
| 1226 | #if 0 |
| 1227 | bug_srec_write_cr (buffer); |
| 1228 | #endif |
| 1229 | |
| 1230 | if (srec_sleep != 0) |
| 1231 | sleep(srec_sleep); |
| 1232 | |
| 1233 | /* This pollchar is probably redundant to the gr_multi_scan |
| 1234 | below. Trouble is, we can't be sure when or where an |
| 1235 | error message will appear. Apparently, when running at |
| 1236 | full speed from a typical sun4, error messages tend to |
| 1237 | appear to arrive only *after* the s7 record. */ |
| 1238 | |
| 1239 | if ((x = sr_pollchar()) != 0) { |
| 1240 | if (sr_get_debug() > 0) |
| 1241 | printf("\n<retrying...>\n"); |
| 1242 | |
| 1243 | ++retries; |
| 1244 | |
| 1245 | /* flush any remaining input and verify that we are back |
| 1246 | at the prompt level. */ |
| 1247 | gr_expect_prompt(); |
| 1248 | /* start all over again. */ |
| 1249 | /* FIXME: this is just start_load pasted in... */ |
| 1250 | { char *command; |
| 1251 | command = (srec_echo_pace ? "lo 0 ;x" : "lo 0"); |
| 1252 | sr_write_cr (command); |
| 1253 | sr_expect (command); |
| 1254 | sr_expect ("\r\n"); |
| 1255 | #if 0 |
| 1256 | bug_srec_write_cr ("S0030000FC"); |
| 1257 | #endif |
| 1258 | } |
| 1259 | /* end of hack */ |
| 1260 | |
| 1261 | done = 0; |
| 1262 | continue; |
| 1263 | } |
| 1264 | |
| 1265 | done += thisgo; |
| 1266 | } |
| 1267 | #if 0 |
| 1268 | bug_srec_write_cr("S7060000000000F9"); |
| 1269 | #endif |
| 1270 | ++retries; |
| 1271 | |
| 1272 | /* Having finished the load, we need to figure out whether we |
| 1273 | had any errors. */ |
| 1274 | } |
| 1275 | |
| 1276 | return(0); |
| 1277 | } |
| 1278 | |
| 1279 | /* |
| 1280 | * _initialize_remote_monitors -- setup a few addtitional commands that |
| 1281 | * are usually only used by monitors. |
| 1282 | */ |
| 1283 | void |
| 1284 | _initialize_remote_monitors () |
| 1285 | { |
| 1286 | struct cmd_list_element *c; |
| 1287 | |
| 1288 | /* this sets the type of download protocol */ |
| 1289 | c = add_set_cmd ("loadtype", no_class, var_string, (char *)&loadtype_str, |
| 1290 | "Set the type of the remote load protocol.\n", &setlist); |
| 1291 | c->function.sfunc = set_loadtype_command; |
| 1292 | add_show_from_set (c, &showlist); |
| 1293 | loadtype_str = savestring ("default", 8); |
| 1294 | |
| 1295 | add_show_from_set (add_set_cmd ("hash", no_class, var_boolean, |
| 1296 | (char *)&hashmark, |
| 1297 | "Set display of activity while downloading a file.\n\ |
| 1298 | When enabled, a period \'.\' is displayed.", |
| 1299 | &setlist), |
| 1300 | &showlist); |
| 1301 | |
| 1302 | /* generic monitor command */ |
| 1303 | add_com ("monitor", class_obscure, monitor_command, |
| 1304 | "Send a command to the debug monitor."); |
| 1305 | } |