| 1 | /* Remote debugging interface for boot monitors, for GDB. |
| 2 | Copyright 1990, 1991, 1992, 1993, 1995, 1996, 1997 |
| 3 | Free Software Foundation, Inc. |
| 4 | Contributed by Cygnus Support. Written by Rob Savoye for Cygnus. |
| 5 | Resurrected from the ashes by Stu Grossman. |
| 6 | |
| 7 | This file is part of GDB. |
| 8 | |
| 9 | This program is free software; you can redistribute it and/or modify |
| 10 | it under the terms of the GNU General Public License as published by |
| 11 | the Free Software Foundation; either version 2 of the License, or |
| 12 | (at your option) any later version. |
| 13 | |
| 14 | This program is distributed in the hope that it will be useful, |
| 15 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 17 | GNU General Public License for more details. |
| 18 | |
| 19 | You should have received a copy of the GNU General Public License |
| 20 | along with this program; if not, write to the Free Software |
| 21 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
| 22 | |
| 23 | /* This file was derived from various remote-* modules. It is a collection |
| 24 | of generic support functions so GDB can talk directly to a ROM based |
| 25 | monitor. This saves use from having to hack an exception based handler |
| 26 | into existance, and makes for quick porting. |
| 27 | |
| 28 | This module talks to a debug monitor called 'MONITOR', which |
| 29 | We communicate with MONITOR via either a direct serial line, or a TCP |
| 30 | (or possibly TELNET) stream to a terminal multiplexor, |
| 31 | which in turn talks to the target board. */ |
| 32 | |
| 33 | /* FIXME 32x64: This code assumes that registers and addresses are at |
| 34 | most 32 bits long. If they can be larger, you will need to declare |
| 35 | values as LONGEST and use %llx or some such to print values when |
| 36 | building commands to send to the monitor. Since we don't know of |
| 37 | any actual 64-bit targets with ROM monitors that use this code, |
| 38 | it's not an issue right now. -sts 4/18/96 */ |
| 39 | |
| 40 | #include "defs.h" |
| 41 | #include "gdbcore.h" |
| 42 | #include "target.h" |
| 43 | #include "wait.h" |
| 44 | #ifdef ANSI_PROTOTYPES |
| 45 | #include <stdarg.h> |
| 46 | #else |
| 47 | #include <varargs.h> |
| 48 | #endif |
| 49 | #include <signal.h> |
| 50 | #include <ctype.h> |
| 51 | #include "gdb_string.h" |
| 52 | #include <sys/types.h> |
| 53 | #include "command.h" |
| 54 | #include "serial.h" |
| 55 | #include "monitor.h" |
| 56 | #include "gdbcmd.h" |
| 57 | #include "inferior.h" |
| 58 | #include "gnu-regex.h" |
| 59 | #include "dcache.h" |
| 60 | #include "srec.h" |
| 61 | |
| 62 | static char *dev_name; |
| 63 | static struct target_ops *targ_ops; |
| 64 | |
| 65 | static void monitor_vsprintf PARAMS ((char *sndbuf, char *pattern, va_list args)); |
| 66 | |
| 67 | static int readchar PARAMS ((int timeout)); |
| 68 | |
| 69 | static void monitor_command PARAMS ((char *args, int fromtty)); |
| 70 | |
| 71 | static void monitor_fetch_register PARAMS ((int regno)); |
| 72 | static void monitor_store_register PARAMS ((int regno)); |
| 73 | |
| 74 | static void monitor_detach PARAMS ((char *args, int from_tty)); |
| 75 | static void monitor_resume PARAMS ((int pid, int step, enum target_signal sig)); |
| 76 | static void monitor_interrupt PARAMS ((int signo)); |
| 77 | static void monitor_interrupt_twice PARAMS ((int signo)); |
| 78 | static void monitor_interrupt_query PARAMS ((void)); |
| 79 | static void monitor_wait_cleanup PARAMS ((void *old_timeout)); |
| 80 | |
| 81 | static int monitor_wait PARAMS ((int pid, struct target_waitstatus *status)); |
| 82 | static void monitor_fetch_registers PARAMS ((int regno)); |
| 83 | static void monitor_store_registers PARAMS ((int regno)); |
| 84 | static void monitor_prepare_to_store PARAMS ((void)); |
| 85 | static int monitor_xfer_memory PARAMS ((CORE_ADDR memaddr, char *myaddr, int len, int write, struct target_ops *target)); |
| 86 | static void monitor_files_info PARAMS ((struct target_ops *ops)); |
| 87 | static int monitor_insert_breakpoint PARAMS ((CORE_ADDR addr, char *shadow)); |
| 88 | static int monitor_remove_breakpoint PARAMS ((CORE_ADDR addr, char *shadow)); |
| 89 | static void monitor_kill PARAMS ((void)); |
| 90 | static void monitor_load PARAMS ((char *file, int from_tty)); |
| 91 | static void monitor_mourn_inferior PARAMS ((void)); |
| 92 | static void monitor_stop PARAMS ((void)); |
| 93 | |
| 94 | static int monitor_read_memory PARAMS ((CORE_ADDR addr, char *myaddr,int len)); |
| 95 | static int monitor_write_memory PARAMS ((CORE_ADDR addr, char *myaddr,int len)); |
| 96 | static int monitor_write_memory_bytes PARAMS ((CORE_ADDR addr, |
| 97 | char *myaddr,int len)); |
| 98 | static int monitor_write_memory_block PARAMS(( |
| 99 | CORE_ADDR memaddr , |
| 100 | char * myaddr , |
| 101 | int len)) ; |
| 102 | static int monitor_expect_regexp PARAMS ((struct re_pattern_buffer *pat, |
| 103 | char *buf, int buflen)); |
| 104 | static void monitor_dump_regs PARAMS((void)) ; |
| 105 | #if 0 |
| 106 | static int from_hex PARAMS ((int a)); |
| 107 | static unsigned long get_hex_word PARAMS ((void)); |
| 108 | #endif |
| 109 | static void parse_register_dump PARAMS ((char *, int)); |
| 110 | |
| 111 | static struct monitor_ops *current_monitor; |
| 112 | |
| 113 | static int hashmark; /* flag set by "set hash" */ |
| 114 | |
| 115 | static int timeout = 30; |
| 116 | |
| 117 | static int in_monitor_wait = 0; /* Non-zero means we are in monitor_wait() */ |
| 118 | |
| 119 | static void (*ofunc)(); /* Old SIGINT signal handler */ |
| 120 | |
| 121 | /* Extra remote debugging for developing a new rom monitor variation */ |
| 122 | #if ! defined(EXTRA_RDEBUG) |
| 123 | #define EXTRA_RDEBUG 0 |
| 124 | #endif |
| 125 | #if EXTRA_RDEBUG |
| 126 | #define RDEBUG(stuff) { if (remote_debug) printf stuff ; } |
| 127 | #else |
| 128 | #define RDEBUG(stuff) {} |
| 129 | #endif |
| 130 | |
| 131 | /* Descriptor for I/O to remote machine. Initialize it to NULL so |
| 132 | that monitor_open knows that we don't have a file open when the |
| 133 | program starts. */ |
| 134 | |
| 135 | static serial_t monitor_desc = NULL; |
| 136 | |
| 137 | /* Pointer to regexp pattern matching data */ |
| 138 | |
| 139 | static struct re_pattern_buffer register_pattern; |
| 140 | static char register_fastmap[256]; |
| 141 | |
| 142 | static struct re_pattern_buffer getmem_resp_delim_pattern; |
| 143 | static char getmem_resp_delim_fastmap[256]; |
| 144 | |
| 145 | static int dump_reg_flag; /* Non-zero means do a dump_registers cmd when |
| 146 | monitor_wait wakes up. */ |
| 147 | |
| 148 | static DCACHE *remote_dcache; |
| 149 | static int first_time=0; /* is this the first time we're executing after |
| 150 | gaving created the child proccess? */ |
| 151 | |
| 152 | /* Convert hex digit A to a number. */ |
| 153 | |
| 154 | static int |
| 155 | fromhex (a) |
| 156 | int a; |
| 157 | { |
| 158 | if (a >= '0' && a <= '9') |
| 159 | return a - '0'; |
| 160 | else if (a >= 'a' && a <= 'f') |
| 161 | return a - 'a' + 10; |
| 162 | else |
| 163 | if (a >= 'A' && a <= 'F') |
| 164 | return a - 'A' + 10 ; |
| 165 | else error ("Invalid hex digit %d", a); |
| 166 | } |
| 167 | |
| 168 | /* monitor_vsprintf - similar to vsprintf but handles 64-bit addresses |
| 169 | |
| 170 | This function exists to get around the problem that many host platforms |
| 171 | don't have a printf that can print 64-bit addresses. The %A format |
| 172 | specification is recognized as a special case, and causes the argument |
| 173 | to be printed as a 64-bit hexadecimal address. |
| 174 | |
| 175 | Only format specifiers of the form "[0-9]*[a-z]" are recognized. |
| 176 | If it is a '%s' format, the argument is a string; otherwise the |
| 177 | argument is assumed to be a long integer. |
| 178 | |
| 179 | %% is also turned into a single %. |
| 180 | */ |
| 181 | |
| 182 | static void |
| 183 | monitor_vsprintf (sndbuf, pattern, args) |
| 184 | char *sndbuf; |
| 185 | char *pattern; |
| 186 | va_list args; |
| 187 | { |
| 188 | char format[10]; |
| 189 | char fmt; |
| 190 | char *p; |
| 191 | int i; |
| 192 | long arg_int; |
| 193 | CORE_ADDR arg_addr; |
| 194 | char *arg_string; |
| 195 | |
| 196 | for (p = pattern; *p; p++) |
| 197 | { |
| 198 | if (*p == '%') |
| 199 | { |
| 200 | /* Copy the format specifier to a separate buffer. */ |
| 201 | format[0] = *p++; |
| 202 | for (i = 1; *p >= '0' && *p <= '9' && i < (int) sizeof (format) - 2; |
| 203 | i++, p++) |
| 204 | format[i] = *p; |
| 205 | format[i] = fmt = *p; |
| 206 | format[i+1] = '\0'; |
| 207 | |
| 208 | /* Fetch the next argument and print it. */ |
| 209 | switch (fmt) |
| 210 | { |
| 211 | case '%': |
| 212 | strcpy (sndbuf, "%"); |
| 213 | break; |
| 214 | case 'A': |
| 215 | arg_addr = va_arg (args, CORE_ADDR); |
| 216 | strcpy (sndbuf, paddr_nz (arg_addr)); |
| 217 | break; |
| 218 | case 's': |
| 219 | arg_string = va_arg (args, char *); |
| 220 | sprintf (sndbuf, format, arg_string); |
| 221 | break; |
| 222 | default: |
| 223 | arg_int = va_arg (args, long); |
| 224 | sprintf (sndbuf, format, arg_int); |
| 225 | break; |
| 226 | } |
| 227 | sndbuf += strlen (sndbuf); |
| 228 | } |
| 229 | else |
| 230 | *sndbuf++ = *p; |
| 231 | } |
| 232 | *sndbuf = '\0'; |
| 233 | } |
| 234 | |
| 235 | |
| 236 | /* monitor_printf_noecho -- Send data to monitor, but don't expect an echo. |
| 237 | Works just like printf. */ |
| 238 | |
| 239 | void |
| 240 | #ifdef ANSI_PROTOTYPES |
| 241 | monitor_printf_noecho (char *pattern, ...) |
| 242 | #else |
| 243 | monitor_printf_noecho (va_alist) |
| 244 | va_dcl |
| 245 | #endif |
| 246 | { |
| 247 | va_list args; |
| 248 | char sndbuf[2000]; |
| 249 | int len; |
| 250 | |
| 251 | #if ANSI_PROTOTYPES |
| 252 | va_start (args, pattern); |
| 253 | #else |
| 254 | char *pattern; |
| 255 | va_start (args); |
| 256 | pattern = va_arg (args, char *); |
| 257 | #endif |
| 258 | |
| 259 | monitor_vsprintf (sndbuf, pattern, args); |
| 260 | |
| 261 | #if 0 |
| 262 | if (remote_debug > 0) |
| 263 | puts_debug ("sent -->", sndbuf, "<--"); |
| 264 | #endif |
| 265 | RDEBUG(("sent[%s]\n",sndbuf)) ; |
| 266 | |
| 267 | len = strlen (sndbuf); |
| 268 | |
| 269 | if (len + 1 > sizeof sndbuf) |
| 270 | abort (); |
| 271 | |
| 272 | monitor_write (sndbuf, len); |
| 273 | } |
| 274 | |
| 275 | /* monitor_printf -- Send data to monitor and check the echo. Works just like |
| 276 | printf. */ |
| 277 | |
| 278 | void |
| 279 | #ifdef ANSI_PROTOTYPES |
| 280 | monitor_printf (char *pattern, ...) |
| 281 | #else |
| 282 | monitor_printf (va_alist) |
| 283 | va_dcl |
| 284 | #endif |
| 285 | { |
| 286 | va_list args; |
| 287 | char sndbuf[2000]; |
| 288 | int len; |
| 289 | |
| 290 | #ifdef ANSI_PROTOTYPES |
| 291 | va_start (args, pattern); |
| 292 | #else |
| 293 | char *pattern; |
| 294 | va_start (args); |
| 295 | pattern = va_arg (args, char *); |
| 296 | #endif |
| 297 | |
| 298 | monitor_vsprintf (sndbuf, pattern, args); |
| 299 | |
| 300 | #if 0 |
| 301 | if (remote_debug > 0) |
| 302 | puts_debug ("sent -->", sndbuf, "<--"); |
| 303 | #endif |
| 304 | RDEBUG(("sent[%s]\n",sndbuf)) |
| 305 | len = strlen (sndbuf); |
| 306 | if (len + 1 > sizeof sndbuf) |
| 307 | abort (); |
| 308 | |
| 309 | monitor_write (sndbuf, len); |
| 310 | |
| 311 | /* We used to expect that the next immediate output was the characters we |
| 312 | just output, but sometimes some extra junk appeared before the characters |
| 313 | we expected, like an extra prompt, or a portmaster sending telnet negotiations. |
| 314 | So, just start searching for what we sent, and skip anything unknown. */ |
| 315 | RDEBUG(("ExpectEcho\n")) |
| 316 | monitor_expect (sndbuf, (char *)0, 0); |
| 317 | } |
| 318 | |
| 319 | |
| 320 | /* Write characters to the remote system. */ |
| 321 | |
| 322 | void |
| 323 | monitor_write (buf, buflen) |
| 324 | char *buf; |
| 325 | int buflen; |
| 326 | { |
| 327 | if (SERIAL_WRITE(monitor_desc, buf, buflen)) |
| 328 | fprintf_unfiltered (stderr, "SERIAL_WRITE failed: %s\n", safe_strerror (errno)); |
| 329 | } |
| 330 | |
| 331 | |
| 332 | /* Read a binary character from the remote system, doing all the fancy |
| 333 | timeout stuff, but without interpreting the character in any way, |
| 334 | and without printing remote debug information. */ |
| 335 | |
| 336 | int |
| 337 | monitor_readchar () |
| 338 | { |
| 339 | int c; |
| 340 | int looping; |
| 341 | |
| 342 | do |
| 343 | { |
| 344 | looping = 0; |
| 345 | c = SERIAL_READCHAR (monitor_desc, timeout); |
| 346 | |
| 347 | if (c >= 0) |
| 348 | c &= 0xff; /* don't lose bit 7 */ |
| 349 | } |
| 350 | while (looping); |
| 351 | |
| 352 | if (c >= 0) |
| 353 | return c; |
| 354 | |
| 355 | if (c == SERIAL_TIMEOUT) |
| 356 | error ("Timeout reading from remote system."); |
| 357 | |
| 358 | perror_with_name ("remote-monitor"); |
| 359 | } |
| 360 | |
| 361 | |
| 362 | /* Read a character from the remote system, doing all the fancy |
| 363 | timeout stuff. */ |
| 364 | |
| 365 | static int |
| 366 | readchar (timeout) |
| 367 | int timeout; |
| 368 | { |
| 369 | int c; |
| 370 | static enum { last_random, last_nl, last_cr, last_crnl } state = last_random; |
| 371 | int looping; |
| 372 | |
| 373 | do |
| 374 | { |
| 375 | looping = 0; |
| 376 | c = SERIAL_READCHAR (monitor_desc, timeout); |
| 377 | |
| 378 | if (c >= 0) |
| 379 | { |
| 380 | c &= 0x7f; |
| 381 | #if 0 |
| 382 | /* This seems to interfere with proper function of the |
| 383 | input stream */ |
| 384 | if (remote_debug > 0) |
| 385 | { |
| 386 | char buf[2]; |
| 387 | buf[0] = c; |
| 388 | buf[1] = '\0'; |
| 389 | puts_debug ("read -->", buf, "<--"); |
| 390 | } |
| 391 | |
| 392 | #endif |
| 393 | } |
| 394 | |
| 395 | /* Canonicialize \n\r combinations into one \r */ |
| 396 | if ((current_monitor->flags & MO_HANDLE_NL) != 0) |
| 397 | { |
| 398 | if ((c == '\r' && state == last_nl) |
| 399 | || (c == '\n' && state == last_cr)) |
| 400 | { |
| 401 | state = last_crnl; |
| 402 | looping = 1; |
| 403 | } |
| 404 | else if (c == '\r') |
| 405 | state = last_cr; |
| 406 | else if (c != '\n') |
| 407 | state = last_random; |
| 408 | else |
| 409 | { |
| 410 | state = last_nl; |
| 411 | c = '\r'; |
| 412 | } |
| 413 | } |
| 414 | } |
| 415 | while (looping); |
| 416 | |
| 417 | if (c >= 0) |
| 418 | return c; |
| 419 | |
| 420 | if (c == SERIAL_TIMEOUT) |
| 421 | #if 0 /* MAINTENANCE_CMDS */ |
| 422 | /* I fail to see how detaching here can be useful */ |
| 423 | if (in_monitor_wait) /* Watchdog went off */ |
| 424 | { |
| 425 | target_mourn_inferior (); |
| 426 | error ("GDB serial timeout has expired. Target detached.\n"); |
| 427 | } |
| 428 | else |
| 429 | #endif |
| 430 | error ("Timeout reading from remote system."); |
| 431 | |
| 432 | perror_with_name ("remote-monitor"); |
| 433 | } |
| 434 | |
| 435 | /* Scan input from the remote system, until STRING is found. If BUF is non- |
| 436 | zero, then collect input until we have collected either STRING or BUFLEN-1 |
| 437 | chars. In either case we terminate BUF with a 0. If input overflows BUF |
| 438 | because STRING can't be found, return -1, else return number of chars in BUF |
| 439 | (minus the terminating NUL). Note that in the non-overflow case, STRING |
| 440 | will be at the end of BUF. */ |
| 441 | |
| 442 | int |
| 443 | monitor_expect (string, buf, buflen) |
| 444 | char *string; |
| 445 | char *buf; |
| 446 | int buflen; |
| 447 | { |
| 448 | char *p = string; |
| 449 | int obuflen = buflen; |
| 450 | int c; |
| 451 | extern struct target_ops *targ_ops; |
| 452 | RDEBUG(("MON Expecting '%s'\n",string)) ; |
| 453 | |
| 454 | immediate_quit = 1; |
| 455 | while (1) |
| 456 | { |
| 457 | if (buf) |
| 458 | { |
| 459 | if (buflen < 2) |
| 460 | { |
| 461 | *buf = '\000'; |
| 462 | immediate_quit = 0; |
| 463 | return -1; |
| 464 | } |
| 465 | |
| 466 | c = readchar (timeout); |
| 467 | if (c == '\000') |
| 468 | continue; |
| 469 | *buf++ = c; |
| 470 | buflen--; |
| 471 | } |
| 472 | else |
| 473 | c = readchar (timeout); |
| 474 | |
| 475 | /* Don't expect any ^C sent to be echoed */ |
| 476 | |
| 477 | if (*p == '\003' || c == *p) |
| 478 | { |
| 479 | p++; |
| 480 | if (*p == '\0') |
| 481 | { |
| 482 | immediate_quit = 0; |
| 483 | |
| 484 | if (buf) |
| 485 | { |
| 486 | *buf++ = '\000'; |
| 487 | return obuflen - buflen; |
| 488 | } |
| 489 | else |
| 490 | return 0; |
| 491 | } |
| 492 | } |
| 493 | else if ((c == '\021' || c == '\023') && |
| 494 | (strcmp(targ_ops->to_shortname, "m32r") == 0)) |
| 495 | { /* m32r monitor emits random DC1/DC3 chars */ |
| 496 | continue; |
| 497 | } |
| 498 | else |
| 499 | { |
| 500 | p = string; |
| 501 | if (c == *p) |
| 502 | p++; |
| 503 | } |
| 504 | } |
| 505 | } |
| 506 | |
| 507 | /* Search for a regexp. */ |
| 508 | |
| 509 | static int |
| 510 | monitor_expect_regexp (pat, buf, buflen) |
| 511 | struct re_pattern_buffer *pat; |
| 512 | char *buf; |
| 513 | int buflen; |
| 514 | { |
| 515 | char *mybuf; |
| 516 | char *p; |
| 517 | RDEBUG(("MON Expecting regexp\n")) ; |
| 518 | if (buf) |
| 519 | mybuf = buf; |
| 520 | else |
| 521 | { |
| 522 | mybuf = alloca (1024); |
| 523 | buflen = 1024; |
| 524 | } |
| 525 | |
| 526 | p = mybuf; |
| 527 | while (1) |
| 528 | { |
| 529 | int retval; |
| 530 | |
| 531 | if (p - mybuf >= buflen) |
| 532 | { /* Buffer about to overflow */ |
| 533 | |
| 534 | /* On overflow, we copy the upper half of the buffer to the lower half. Not |
| 535 | great, but it usually works... */ |
| 536 | |
| 537 | memcpy (mybuf, mybuf + buflen / 2, buflen / 2); |
| 538 | p = mybuf + buflen / 2; |
| 539 | } |
| 540 | |
| 541 | *p++ = readchar (timeout); |
| 542 | |
| 543 | retval = re_search (pat, mybuf, p - mybuf, 0, p - mybuf, NULL); |
| 544 | if (retval >= 0) |
| 545 | return 1; |
| 546 | } |
| 547 | } |
| 548 | |
| 549 | /* Keep discarding input until we see the MONITOR prompt. |
| 550 | |
| 551 | The convention for dealing with the prompt is that you |
| 552 | o give your command |
| 553 | o *then* wait for the prompt. |
| 554 | |
| 555 | Thus the last thing that a procedure does with the serial line will |
| 556 | be an monitor_expect_prompt(). Exception: monitor_resume does not |
| 557 | wait for the prompt, because the terminal is being handed over to |
| 558 | the inferior. However, the next thing which happens after that is |
| 559 | a monitor_wait which does wait for the prompt. Note that this |
| 560 | includes abnormal exit, e.g. error(). This is necessary to prevent |
| 561 | getting into states from which we can't recover. */ |
| 562 | |
| 563 | int |
| 564 | monitor_expect_prompt (buf, buflen) |
| 565 | char *buf; |
| 566 | int buflen; |
| 567 | { |
| 568 | RDEBUG(("MON Expecting prompt\n")) |
| 569 | return monitor_expect (current_monitor->prompt, buf, buflen); |
| 570 | } |
| 571 | |
| 572 | /* Get N 32-bit words from remote, each preceded by a space, and put |
| 573 | them in registers starting at REGNO. */ |
| 574 | |
| 575 | #if 0 |
| 576 | static unsigned long |
| 577 | get_hex_word () |
| 578 | { |
| 579 | unsigned long val; |
| 580 | int i; |
| 581 | int ch; |
| 582 | |
| 583 | do |
| 584 | ch = readchar (timeout); |
| 585 | while (isspace(ch)); |
| 586 | |
| 587 | val = from_hex (ch); |
| 588 | |
| 589 | for (i = 7; i >= 1; i--) |
| 590 | { |
| 591 | ch = readchar (timeout); |
| 592 | if (!isxdigit (ch)) |
| 593 | break; |
| 594 | val = (val << 4) | from_hex (ch); |
| 595 | } |
| 596 | |
| 597 | return val; |
| 598 | } |
| 599 | #endif |
| 600 | |
| 601 | static void |
| 602 | compile_pattern (pattern, compiled_pattern, fastmap) |
| 603 | char *pattern; |
| 604 | struct re_pattern_buffer *compiled_pattern; |
| 605 | char *fastmap; |
| 606 | { |
| 607 | int tmp; |
| 608 | const char *val; |
| 609 | |
| 610 | compiled_pattern->fastmap = fastmap; |
| 611 | |
| 612 | tmp = re_set_syntax (RE_SYNTAX_EMACS); |
| 613 | val = re_compile_pattern (pattern, |
| 614 | strlen (pattern), |
| 615 | compiled_pattern); |
| 616 | re_set_syntax (tmp); |
| 617 | |
| 618 | if (val) |
| 619 | error ("compile_pattern: Can't compile pattern string `%s': %s!", pattern, val); |
| 620 | |
| 621 | if (fastmap) |
| 622 | re_compile_fastmap (compiled_pattern); |
| 623 | } |
| 624 | |
| 625 | /* Open a connection to a remote debugger. NAME is the filename used |
| 626 | for communication. */ |
| 627 | |
| 628 | void |
| 629 | monitor_open (args, mon_ops, from_tty) |
| 630 | char *args; |
| 631 | struct monitor_ops *mon_ops; |
| 632 | int from_tty; |
| 633 | { |
| 634 | char *name; |
| 635 | char **p; |
| 636 | |
| 637 | if (mon_ops->magic != MONITOR_OPS_MAGIC) |
| 638 | error ("Magic number of monitor_ops struct wrong."); |
| 639 | |
| 640 | targ_ops = mon_ops->target; |
| 641 | name = targ_ops->to_shortname; |
| 642 | |
| 643 | if (!args) |
| 644 | error ("Use `target %s DEVICE-NAME' to use a serial port, or \n\ |
| 645 | `target %s HOST-NAME:PORT-NUMBER' to use a network connection.", name, name); |
| 646 | |
| 647 | target_preopen (from_tty); |
| 648 | |
| 649 | /* Setup pattern for register dump */ |
| 650 | |
| 651 | if (mon_ops->register_pattern) |
| 652 | compile_pattern (mon_ops->register_pattern, ®ister_pattern, |
| 653 | register_fastmap); |
| 654 | |
| 655 | if (mon_ops->getmem.resp_delim) |
| 656 | compile_pattern (mon_ops->getmem.resp_delim, &getmem_resp_delim_pattern, |
| 657 | getmem_resp_delim_fastmap); |
| 658 | |
| 659 | unpush_target (targ_ops); |
| 660 | |
| 661 | if (dev_name) |
| 662 | free (dev_name); |
| 663 | dev_name = strsave (args); |
| 664 | |
| 665 | monitor_desc = SERIAL_OPEN (dev_name); |
| 666 | |
| 667 | if (!monitor_desc) |
| 668 | perror_with_name (dev_name); |
| 669 | |
| 670 | if (baud_rate != -1) |
| 671 | { |
| 672 | if (SERIAL_SETBAUDRATE (monitor_desc, baud_rate)) |
| 673 | { |
| 674 | SERIAL_CLOSE (monitor_desc); |
| 675 | perror_with_name (dev_name); |
| 676 | } |
| 677 | } |
| 678 | |
| 679 | SERIAL_RAW (monitor_desc); |
| 680 | |
| 681 | SERIAL_FLUSH_INPUT (monitor_desc); |
| 682 | |
| 683 | /* some systems only work with 2 stop bits */ |
| 684 | |
| 685 | SERIAL_SETSTOPBITS (monitor_desc, mon_ops->stopbits); |
| 686 | |
| 687 | current_monitor = mon_ops; |
| 688 | |
| 689 | /* See if we can wake up the monitor. First, try sending a stop sequence, |
| 690 | then send the init strings. Last, remove all breakpoints. */ |
| 691 | |
| 692 | if (current_monitor->stop) |
| 693 | { |
| 694 | monitor_stop (); |
| 695 | if ((current_monitor->flags & MO_NO_ECHO_ON_OPEN) == 0) |
| 696 | { |
| 697 | RDEBUG(("EXP Open echo\n")) ; |
| 698 | monitor_expect_prompt (NULL, 0); |
| 699 | } |
| 700 | } |
| 701 | |
| 702 | /* wake up the monitor and see if it's alive */ |
| 703 | for (p = mon_ops->init; *p != NULL; p++) |
| 704 | { |
| 705 | /* Some of the characters we send may not be echoed, |
| 706 | but we hope to get a prompt at the end of it all. */ |
| 707 | |
| 708 | if ((current_monitor->flags & MO_NO_ECHO_ON_OPEN) == 0) |
| 709 | monitor_printf(*p); |
| 710 | else |
| 711 | monitor_printf_noecho (*p); |
| 712 | monitor_expect_prompt (NULL, 0); |
| 713 | } |
| 714 | |
| 715 | SERIAL_FLUSH_INPUT (monitor_desc); |
| 716 | |
| 717 | /* Remove all breakpoints */ |
| 718 | |
| 719 | if (mon_ops->clr_all_break) |
| 720 | { |
| 721 | monitor_printf (mon_ops->clr_all_break); |
| 722 | monitor_expect_prompt (NULL, 0); |
| 723 | } |
| 724 | |
| 725 | if (from_tty) |
| 726 | printf_unfiltered ("Remote target %s connected to %s\n", name, dev_name); |
| 727 | |
| 728 | push_target (targ_ops); |
| 729 | |
| 730 | inferior_pid = 42000; /* Make run command think we are busy... */ |
| 731 | |
| 732 | /* Give monitor_wait something to read */ |
| 733 | |
| 734 | monitor_printf (current_monitor->line_term); |
| 735 | |
| 736 | if (current_monitor->flags & MO_HAS_BLOCKWRITES) |
| 737 | remote_dcache = dcache_init (monitor_read_memory, monitor_write_memory_block); |
| 738 | else |
| 739 | remote_dcache = dcache_init (monitor_read_memory, monitor_write_memory); |
| 740 | start_remote (); |
| 741 | } |
| 742 | |
| 743 | /* Close out all files and local state before this target loses |
| 744 | control. */ |
| 745 | |
| 746 | void |
| 747 | monitor_close (quitting) |
| 748 | int quitting; |
| 749 | { |
| 750 | if (monitor_desc) |
| 751 | SERIAL_CLOSE (monitor_desc); |
| 752 | monitor_desc = NULL; |
| 753 | } |
| 754 | |
| 755 | /* Terminate the open connection to the remote debugger. Use this |
| 756 | when you want to detach and do something else with your gdb. */ |
| 757 | |
| 758 | static void |
| 759 | monitor_detach (args, from_tty) |
| 760 | char *args; |
| 761 | int from_tty; |
| 762 | { |
| 763 | pop_target (); /* calls monitor_close to do the real work */ |
| 764 | if (from_tty) |
| 765 | printf_unfiltered ("Ending remote %s debugging\n", target_shortname); |
| 766 | } |
| 767 | |
| 768 | /* Convert VALSTR into the target byte-ordered value of REGNO and store it. */ |
| 769 | |
| 770 | char * |
| 771 | monitor_supply_register (regno, valstr) |
| 772 | int regno; |
| 773 | char *valstr; |
| 774 | { |
| 775 | unsigned int val; |
| 776 | unsigned char regbuf[MAX_REGISTER_RAW_SIZE]; |
| 777 | char *p; |
| 778 | |
| 779 | val = strtoul (valstr, &p, 16); |
| 780 | RDEBUG(("Supplying Register %d %s\n",regno,valstr)) ; |
| 781 | |
| 782 | if (val == 0 && valstr == p) |
| 783 | error ("monitor_supply_register (%d): bad value from monitor: %s.", |
| 784 | regno, valstr); |
| 785 | |
| 786 | /* supply register stores in target byte order, so swap here */ |
| 787 | |
| 788 | store_unsigned_integer (regbuf, REGISTER_RAW_SIZE (regno), val); |
| 789 | |
| 790 | supply_register (regno, regbuf); |
| 791 | |
| 792 | return p; |
| 793 | } |
| 794 | |
| 795 | /* Tell the remote machine to resume. */ |
| 796 | |
| 797 | void |
| 798 | flush_monitor_dcache () |
| 799 | { |
| 800 | dcache_flush (remote_dcache); |
| 801 | } |
| 802 | |
| 803 | static void |
| 804 | monitor_resume (pid, step, sig) |
| 805 | int pid, step; |
| 806 | enum target_signal sig; |
| 807 | { |
| 808 | /* Some monitors require a different command when starting a program */ |
| 809 | RDEBUG(("MON resume\n")) ; |
| 810 | if (current_monitor->flags & MO_RUN_FIRST_TIME && first_time == 1) |
| 811 | { |
| 812 | first_time = 0; |
| 813 | monitor_printf ("run\r"); |
| 814 | if (current_monitor->flags & MO_NEED_REGDUMP_AFTER_CONT) |
| 815 | dump_reg_flag = 1; |
| 816 | return; |
| 817 | } |
| 818 | dcache_flush (remote_dcache); |
| 819 | if (step) |
| 820 | monitor_printf (current_monitor->step); |
| 821 | else |
| 822 | { |
| 823 | if (current_monitor->continue_hook) |
| 824 | (*current_monitor->continue_hook)() ; |
| 825 | else monitor_printf (current_monitor->cont); |
| 826 | if (current_monitor->flags & MO_NEED_REGDUMP_AFTER_CONT) |
| 827 | dump_reg_flag = 1; |
| 828 | } |
| 829 | } |
| 830 | |
| 831 | /* Parse the output of a register dump command. A monitor specific |
| 832 | regexp is used to extract individual register descriptions of the |
| 833 | form REG=VAL. Each description is split up into a name and a value |
| 834 | string which are passed down to monitor specific code. */ |
| 835 | |
| 836 | static void |
| 837 | parse_register_dump (buf, len) |
| 838 | char *buf; |
| 839 | int len; |
| 840 | { |
| 841 | RDEBUG(("MON Parsing register dump\n")) |
| 842 | while (1) |
| 843 | { |
| 844 | int regnamelen, vallen; |
| 845 | char *regname, *val; |
| 846 | /* Element 0 points to start of register name, and element 1 |
| 847 | points to the start of the register value. */ |
| 848 | struct re_registers register_strings; |
| 849 | |
| 850 | memset (®ister_strings, 0, sizeof (struct re_registers)); |
| 851 | |
| 852 | if (re_search (®ister_pattern, buf, len, 0, len, |
| 853 | ®ister_strings) == -1) |
| 854 | break; |
| 855 | |
| 856 | regnamelen = register_strings.end[1] - register_strings.start[1]; |
| 857 | regname = buf + register_strings.start[1]; |
| 858 | vallen = register_strings.end[2] - register_strings.start[2]; |
| 859 | val = buf + register_strings.start[2]; |
| 860 | |
| 861 | current_monitor->supply_register (regname, regnamelen, val, vallen); |
| 862 | |
| 863 | buf += register_strings.end[0]; |
| 864 | len -= register_strings.end[0]; |
| 865 | } |
| 866 | } |
| 867 | |
| 868 | /* Send ^C to target to halt it. Target will respond, and send us a |
| 869 | packet. */ |
| 870 | |
| 871 | static void |
| 872 | monitor_interrupt (signo) |
| 873 | int signo; |
| 874 | { |
| 875 | /* If this doesn't work, try more severe steps. */ |
| 876 | signal (signo, monitor_interrupt_twice); |
| 877 | |
| 878 | if (remote_debug) |
| 879 | printf_unfiltered ("monitor_interrupt called\n"); |
| 880 | |
| 881 | target_stop (); |
| 882 | } |
| 883 | |
| 884 | /* The user typed ^C twice. */ |
| 885 | |
| 886 | static void |
| 887 | monitor_interrupt_twice (signo) |
| 888 | int signo; |
| 889 | { |
| 890 | signal (signo, ofunc); |
| 891 | |
| 892 | monitor_interrupt_query (); |
| 893 | |
| 894 | signal (signo, monitor_interrupt); |
| 895 | } |
| 896 | |
| 897 | /* Ask the user what to do when an interrupt is received. */ |
| 898 | |
| 899 | static void |
| 900 | monitor_interrupt_query () |
| 901 | { |
| 902 | target_terminal_ours (); |
| 903 | |
| 904 | if (query ("Interrupted while waiting for the program.\n\ |
| 905 | Give up (and stop debugging it)? ")) |
| 906 | { |
| 907 | target_mourn_inferior (); |
| 908 | return_to_top_level (RETURN_QUIT); |
| 909 | } |
| 910 | |
| 911 | target_terminal_inferior (); |
| 912 | } |
| 913 | |
| 914 | static void |
| 915 | monitor_wait_cleanup (old_timeout) |
| 916 | void *old_timeout; |
| 917 | { |
| 918 | timeout = *(int*)old_timeout; |
| 919 | signal (SIGINT, ofunc); |
| 920 | in_monitor_wait = 0; |
| 921 | } |
| 922 | |
| 923 | |
| 924 | |
| 925 | void monitor_wait_filter(char * buf, |
| 926 | int bufmax, |
| 927 | int * ext_resp_len, |
| 928 | struct target_waitstatus * status |
| 929 | ) |
| 930 | { |
| 931 | int resp_len ; |
| 932 | do |
| 933 | { |
| 934 | resp_len = monitor_expect_prompt (buf, bufmax); |
| 935 | * ext_resp_len =resp_len ; |
| 936 | |
| 937 | if (resp_len <= 0) |
| 938 | fprintf_unfiltered (gdb_stderr, "monitor_wait: excessive response from monitor: %s.", buf); |
| 939 | } |
| 940 | while (resp_len < 0); |
| 941 | |
| 942 | /* Print any output characters that were preceded by ^O. */ |
| 943 | /* FIXME - This would be great as a user settabgle flag */ |
| 944 | if (remote_debug || |
| 945 | current_monitor->flags & MO_PRINT_PROGRAM_OUTPUT) |
| 946 | { |
| 947 | int i; |
| 948 | |
| 949 | for (i = 0; i < resp_len - 1; i++) |
| 950 | if (buf[i] == 0x0f) |
| 951 | putchar_unfiltered (buf[++i]); |
| 952 | } |
| 953 | } |
| 954 | |
| 955 | |
| 956 | |
| 957 | /* Wait until the remote machine stops, then return, storing status in |
| 958 | status just as `wait' would. */ |
| 959 | |
| 960 | static int |
| 961 | monitor_wait (pid, status) |
| 962 | int pid; |
| 963 | struct target_waitstatus *status; |
| 964 | { |
| 965 | int old_timeout = timeout; |
| 966 | char buf[1024]; |
| 967 | int resp_len; |
| 968 | struct cleanup *old_chain; |
| 969 | |
| 970 | status->kind = TARGET_WAITKIND_EXITED; |
| 971 | status->value.integer = 0; |
| 972 | |
| 973 | old_chain = make_cleanup (monitor_wait_cleanup, &old_timeout); |
| 974 | RDEBUG(("MON wait\n")) |
| 975 | |
| 976 | #if 0 /* MAINTENANCE_CMDS */ |
| 977 | /* This is somthing other than a maintenance command */ |
| 978 | in_monitor_wait = 1; |
| 979 | timeout = watchdog > 0 ? watchdog : -1; |
| 980 | #else |
| 981 | timeout = -1; /* Don't time out -- user program is running. */ |
| 982 | #endif |
| 983 | |
| 984 | ofunc = (void (*)()) signal (SIGINT, monitor_interrupt); |
| 985 | |
| 986 | if (current_monitor->wait_filter) |
| 987 | (*current_monitor->wait_filter)(buf,sizeof (buf),&resp_len,status) ; |
| 988 | else monitor_wait_filter(buf,sizeof (buf),&resp_len,status) ; |
| 989 | |
| 990 | #if 0 /* Transferred to monitor wait filter */ |
| 991 | do |
| 992 | { |
| 993 | resp_len = monitor_expect_prompt (buf, sizeof (buf)); |
| 994 | |
| 995 | if (resp_len <= 0) |
| 996 | fprintf_unfiltered (gdb_stderr, "monitor_wait: excessive response from monitor: %s.", buf); |
| 997 | } |
| 998 | while (resp_len < 0); |
| 999 | |
| 1000 | /* Print any output characters that were preceded by ^O. */ |
| 1001 | /* FIXME - This would be great as a user settabgle flag */ |
| 1002 | if (remote_debug || |
| 1003 | current_monitor->flags & MO_PRINT_PROGRAM_OUTPUT) |
| 1004 | { |
| 1005 | int i; |
| 1006 | |
| 1007 | for (i = 0; i < resp_len - 1; i++) |
| 1008 | if (buf[i] == 0x0f) |
| 1009 | putchar_unfiltered (buf[++i]); |
| 1010 | } |
| 1011 | #endif |
| 1012 | |
| 1013 | signal (SIGINT, ofunc); |
| 1014 | |
| 1015 | timeout = old_timeout; |
| 1016 | #if 0 |
| 1017 | if (dump_reg_flag && current_monitor->dump_registers) |
| 1018 | { |
| 1019 | dump_reg_flag = 0; |
| 1020 | monitor_printf (current_monitor->dump_registers); |
| 1021 | resp_len = monitor_expect_prompt (buf, sizeof (buf)); |
| 1022 | } |
| 1023 | |
| 1024 | if (current_monitor->register_pattern) |
| 1025 | parse_register_dump (buf, resp_len); |
| 1026 | #else |
| 1027 | RDEBUG(("Wait fetching registers after stop\n")) ; |
| 1028 | monitor_dump_regs() ; |
| 1029 | #endif |
| 1030 | |
| 1031 | status->kind = TARGET_WAITKIND_STOPPED; |
| 1032 | status->value.sig = TARGET_SIGNAL_TRAP; |
| 1033 | |
| 1034 | discard_cleanups (old_chain); |
| 1035 | |
| 1036 | in_monitor_wait = 0; |
| 1037 | |
| 1038 | return inferior_pid; |
| 1039 | } |
| 1040 | |
| 1041 | /* Fetch register REGNO, or all registers if REGNO is -1. Returns |
| 1042 | errno value. */ |
| 1043 | |
| 1044 | static void |
| 1045 | monitor_fetch_register (regno) |
| 1046 | int regno; |
| 1047 | { |
| 1048 | char *name; |
| 1049 | static char zerobuf[MAX_REGISTER_RAW_SIZE] = {0}; |
| 1050 | char regbuf[MAX_REGISTER_RAW_SIZE * 2 + 1]; |
| 1051 | int i; |
| 1052 | |
| 1053 | name = current_monitor->regnames[regno]; |
| 1054 | RDEBUG(("MON fetchreg %d '%s'\n",regno,name)) |
| 1055 | |
| 1056 | if (!name || (*name == '\0')) |
| 1057 | { RDEBUG(("No register known for %d\n",regno)) |
| 1058 | supply_register (regno, zerobuf); |
| 1059 | return; |
| 1060 | } |
| 1061 | |
| 1062 | /* send the register examine command */ |
| 1063 | |
| 1064 | monitor_printf (current_monitor->getreg.cmd, name); |
| 1065 | |
| 1066 | /* If RESP_DELIM is specified, we search for that as a leading |
| 1067 | delimiter for the register value. Otherwise, we just start |
| 1068 | searching from the start of the buf. */ |
| 1069 | |
| 1070 | if (current_monitor->getreg.resp_delim) |
| 1071 | { |
| 1072 | RDEBUG(("EXP getreg.resp_delim\n")) |
| 1073 | monitor_expect (current_monitor->getreg.resp_delim, NULL, 0); |
| 1074 | /* Handle case of first 32 registers listed in pairs. */ |
| 1075 | if (current_monitor->flags & MO_32_REGS_PAIRED |
| 1076 | && regno & 1 == 1 && regno < 32) |
| 1077 | { RDEBUG(("EXP getreg.resp_delim\n")) ; |
| 1078 | monitor_expect (current_monitor->getreg.resp_delim, NULL, 0); |
| 1079 | } |
| 1080 | } |
| 1081 | |
| 1082 | /* Skip leading spaces and "0x" if MO_HEX_PREFIX flag is set */ |
| 1083 | if (current_monitor->flags & MO_HEX_PREFIX) |
| 1084 | { |
| 1085 | int c; |
| 1086 | c = readchar (timeout); |
| 1087 | while (c == ' ') |
| 1088 | c = readchar (timeout); |
| 1089 | if ((c == '0') && ((c = readchar (timeout)) == 'x')) |
| 1090 | ; |
| 1091 | else |
| 1092 | error ("Bad value returned from monitor while fetching register %x.", |
| 1093 | regno); |
| 1094 | } |
| 1095 | |
| 1096 | /* Read upto the maximum number of hex digits for this register, skipping |
| 1097 | spaces, but stop reading if something else is seen. Some monitors |
| 1098 | like to drop leading zeros. */ |
| 1099 | |
| 1100 | for (i = 0; i < REGISTER_RAW_SIZE (regno) * 2; i++) |
| 1101 | { |
| 1102 | int c; |
| 1103 | c = readchar (timeout); |
| 1104 | while (c == ' ') |
| 1105 | c = readchar (timeout); |
| 1106 | |
| 1107 | if (!isxdigit (c)) |
| 1108 | break; |
| 1109 | |
| 1110 | regbuf[i] = c; |
| 1111 | } |
| 1112 | |
| 1113 | regbuf[i] = '\000'; /* terminate the number */ |
| 1114 | RDEBUG(("REGVAL '%s'\n",regbuf)) ; |
| 1115 | |
| 1116 | /* If TERM is present, we wait for that to show up. Also, (if TERM |
| 1117 | is present), we will send TERM_CMD if that is present. In any |
| 1118 | case, we collect all of the output into buf, and then wait for |
| 1119 | the normal prompt. */ |
| 1120 | |
| 1121 | if (current_monitor->getreg.term) |
| 1122 | { |
| 1123 | RDEBUG(("EXP getreg.term\n")) |
| 1124 | monitor_expect (current_monitor->getreg.term, NULL, 0); /* get response */ |
| 1125 | } |
| 1126 | |
| 1127 | if (current_monitor->getreg.term_cmd) |
| 1128 | { RDEBUG(("EMIT getreg.term.cmd\n")) |
| 1129 | monitor_printf (current_monitor->getreg.term_cmd); |
| 1130 | } |
| 1131 | if (! current_monitor->getreg.term || /* Already expected or */ |
| 1132 | current_monitor->getreg.term_cmd) /* ack expected */ |
| 1133 | monitor_expect_prompt (NULL, 0); /* get response */ |
| 1134 | |
| 1135 | monitor_supply_register (regno, regbuf); |
| 1136 | } |
| 1137 | |
| 1138 | /* Sometimes, it takes several commands to dump the registers */ |
| 1139 | /* This is a primitive for use by variations of monitor interfaces in |
| 1140 | case they need to compose the operation. |
| 1141 | */ |
| 1142 | int monitor_dump_reg_block(char * block_cmd) |
| 1143 | { |
| 1144 | char buf[1024]; |
| 1145 | int resp_len; |
| 1146 | monitor_printf (block_cmd); |
| 1147 | resp_len = monitor_expect_prompt (buf, sizeof (buf)); |
| 1148 | parse_register_dump (buf, resp_len); |
| 1149 | return 1 ; |
| 1150 | } |
| 1151 | |
| 1152 | |
| 1153 | /* Read the remote registers into the block regs. */ |
| 1154 | /* Call the specific function if it has been provided */ |
| 1155 | |
| 1156 | static void |
| 1157 | monitor_dump_regs () |
| 1158 | { |
| 1159 | char buf[1024]; |
| 1160 | int resp_len; |
| 1161 | if (current_monitor->dumpregs) |
| 1162 | (*(current_monitor->dumpregs))() ; /* call supplied function */ |
| 1163 | else |
| 1164 | if (current_monitor->dump_registers) /* default version */ |
| 1165 | { monitor_printf (current_monitor->dump_registers); |
| 1166 | resp_len = monitor_expect_prompt (buf, sizeof (buf)); |
| 1167 | parse_register_dump (buf, resp_len); |
| 1168 | } |
| 1169 | else |
| 1170 | abort(); /* Need some way to read registers */ |
| 1171 | } |
| 1172 | |
| 1173 | static void |
| 1174 | monitor_fetch_registers (regno) |
| 1175 | int regno; |
| 1176 | { |
| 1177 | RDEBUG(("MON fetchregs\n")) ; |
| 1178 | if (current_monitor->getreg.cmd) |
| 1179 | { |
| 1180 | if (regno >= 0) |
| 1181 | { |
| 1182 | monitor_fetch_register (regno); |
| 1183 | return; |
| 1184 | } |
| 1185 | |
| 1186 | for (regno = 0; regno < NUM_REGS; regno++) |
| 1187 | monitor_fetch_register (regno); |
| 1188 | } |
| 1189 | else { |
| 1190 | monitor_dump_regs (); |
| 1191 | } |
| 1192 | } |
| 1193 | |
| 1194 | /* Store register REGNO, or all if REGNO == 0. Return errno value. */ |
| 1195 | |
| 1196 | static void |
| 1197 | monitor_store_register (regno) |
| 1198 | int regno; |
| 1199 | { |
| 1200 | char *name; |
| 1201 | unsigned int val; |
| 1202 | |
| 1203 | name = current_monitor->regnames[regno]; |
| 1204 | if (!name || (*name == '\0')) |
| 1205 | { RDEBUG(("MON Cannot store unknown register\n")) |
| 1206 | return; |
| 1207 | } |
| 1208 | |
| 1209 | val = read_register (regno); |
| 1210 | RDEBUG(("MON storeg %d %08x\n",regno,(unsigned int)val)) |
| 1211 | |
| 1212 | /* send the register deposit command */ |
| 1213 | |
| 1214 | if (current_monitor->flags & MO_REGISTER_VALUE_FIRST) |
| 1215 | monitor_printf (current_monitor->setreg.cmd, val, name); |
| 1216 | else if (current_monitor->flags & MO_SETREG_INTERACTIVE) |
| 1217 | monitor_printf (current_monitor->setreg.cmd, name); |
| 1218 | else |
| 1219 | monitor_printf (current_monitor->setreg.cmd, name, val); |
| 1220 | |
| 1221 | if (current_monitor->setreg.term) |
| 1222 | { RDEBUG(("EXP setreg.term\n")) |
| 1223 | monitor_expect (current_monitor->setreg.term, NULL, 0); |
| 1224 | if (current_monitor->flags & MO_SETREG_INTERACTIVE) |
| 1225 | monitor_printf ("%x\r", val); |
| 1226 | monitor_expect_prompt (NULL, 0); |
| 1227 | } |
| 1228 | else |
| 1229 | monitor_expect_prompt (NULL, 0); |
| 1230 | if (current_monitor->setreg.term_cmd) /* Mode exit required */ |
| 1231 | { RDEBUG(("EXP setreg_termcmd\n")) ; |
| 1232 | monitor_printf("%s",current_monitor->setreg.term_cmd) ; |
| 1233 | monitor_expect_prompt(NULL,0) ; |
| 1234 | } |
| 1235 | } /* monitor_store_register */ |
| 1236 | |
| 1237 | /* Store the remote registers. */ |
| 1238 | |
| 1239 | static void |
| 1240 | monitor_store_registers (regno) |
| 1241 | int regno; |
| 1242 | { |
| 1243 | if (regno >= 0) |
| 1244 | { |
| 1245 | monitor_store_register (regno); |
| 1246 | return; |
| 1247 | } |
| 1248 | |
| 1249 | for (regno = 0; regno < NUM_REGS; regno++) |
| 1250 | monitor_store_register (regno); |
| 1251 | } |
| 1252 | |
| 1253 | /* Get ready to modify the registers array. On machines which store |
| 1254 | individual registers, this doesn't need to do anything. On machines |
| 1255 | which store all the registers in one fell swoop, this makes sure |
| 1256 | that registers contains all the registers from the program being |
| 1257 | debugged. */ |
| 1258 | |
| 1259 | static void |
| 1260 | monitor_prepare_to_store () |
| 1261 | { |
| 1262 | /* Do nothing, since we can store individual regs */ |
| 1263 | } |
| 1264 | |
| 1265 | static void |
| 1266 | monitor_files_info (ops) |
| 1267 | struct target_ops *ops; |
| 1268 | { |
| 1269 | printf_unfiltered ("\tAttached to %s at %d baud.\n", dev_name, baud_rate); |
| 1270 | } |
| 1271 | |
| 1272 | static int |
| 1273 | monitor_write_memory (memaddr, myaddr, len) |
| 1274 | CORE_ADDR memaddr; |
| 1275 | char *myaddr; |
| 1276 | int len; |
| 1277 | { |
| 1278 | unsigned int val, hostval ; |
| 1279 | char *cmd; |
| 1280 | int i; |
| 1281 | |
| 1282 | RDEBUG(("MON write %d %08x\n",len,(unsigned long)memaddr)) |
| 1283 | |
| 1284 | if (current_monitor->flags & MO_ADDR_BITS_REMOVE) |
| 1285 | memaddr = ADDR_BITS_REMOVE (memaddr); |
| 1286 | |
| 1287 | /* Use memory fill command for leading 0 bytes. */ |
| 1288 | |
| 1289 | if (current_monitor->fill) |
| 1290 | { |
| 1291 | for (i = 0; i < len; i++) |
| 1292 | if (myaddr[i] != 0) |
| 1293 | break; |
| 1294 | |
| 1295 | if (i > 4) /* More than 4 zeros is worth doing */ |
| 1296 | { |
| 1297 | RDEBUG(("MON FILL %d\n",i)) |
| 1298 | if (current_monitor->flags & MO_FILL_USES_ADDR) |
| 1299 | monitor_printf (current_monitor->fill, memaddr, (memaddr + i)-1, 0); |
| 1300 | else |
| 1301 | monitor_printf (current_monitor->fill, memaddr, i, 0); |
| 1302 | |
| 1303 | monitor_expect_prompt (NULL, 0); |
| 1304 | |
| 1305 | return i; |
| 1306 | } |
| 1307 | } |
| 1308 | |
| 1309 | #if 0 |
| 1310 | /* Can't actually use long longs if VAL is an int (nice idea, though). */ |
| 1311 | if ((memaddr & 0x7) == 0 && len >= 8 && current_monitor->setmem.cmdll) |
| 1312 | { |
| 1313 | len = 8; |
| 1314 | cmd = current_monitor->setmem.cmdll; |
| 1315 | } |
| 1316 | else |
| 1317 | #endif |
| 1318 | if ((memaddr & 0x3) == 0 && len >= 4 && current_monitor->setmem.cmdl) |
| 1319 | { |
| 1320 | len = 4; |
| 1321 | cmd = current_monitor->setmem.cmdl; |
| 1322 | } |
| 1323 | else if ((memaddr & 0x1) == 0 && len >= 2 && current_monitor->setmem.cmdw) |
| 1324 | { |
| 1325 | len = 2; |
| 1326 | cmd = current_monitor->setmem.cmdw; |
| 1327 | } |
| 1328 | else |
| 1329 | { |
| 1330 | len = 1; |
| 1331 | cmd = current_monitor->setmem.cmdb; |
| 1332 | } |
| 1333 | |
| 1334 | val = extract_unsigned_integer (myaddr, len); |
| 1335 | |
| 1336 | if (len == 4) |
| 1337 | { hostval = * (unsigned int *) myaddr ; |
| 1338 | RDEBUG(("Hostval(%08x) val(%08x)\n",hostval,val)) ; |
| 1339 | } |
| 1340 | |
| 1341 | |
| 1342 | if (current_monitor->flags & MO_NO_ECHO_ON_SETMEM) |
| 1343 | monitor_printf_noecho (cmd, memaddr, val); |
| 1344 | else if (current_monitor->flags & MO_SETMEM_INTERACTIVE) |
| 1345 | { |
| 1346 | |
| 1347 | monitor_printf_noecho (cmd, memaddr); |
| 1348 | |
| 1349 | if (current_monitor->setmem.term) |
| 1350 | { RDEBUG(("EXP setmem.term")) ; |
| 1351 | monitor_expect (current_monitor->setmem.term, NULL, 0); |
| 1352 | monitor_printf ("%x\r", val); |
| 1353 | } |
| 1354 | if (current_monitor->setmem.term_cmd) |
| 1355 | { /* Emit this to get out of the memory editing state */ |
| 1356 | monitor_printf("%s",current_monitor->setmem.term_cmd) ; |
| 1357 | /* Drop through to expecting a prompt */ |
| 1358 | } |
| 1359 | } |
| 1360 | else |
| 1361 | monitor_printf (cmd, memaddr, val); |
| 1362 | |
| 1363 | monitor_expect_prompt (NULL, 0); |
| 1364 | |
| 1365 | return len; |
| 1366 | } |
| 1367 | |
| 1368 | |
| 1369 | static int |
| 1370 | monitor_write_even_block(memaddr,myaddr,len) |
| 1371 | CORE_ADDR memaddr ; |
| 1372 | char * myaddr ; |
| 1373 | int len ; |
| 1374 | { |
| 1375 | unsigned int val ; |
| 1376 | int written = 0 ;; |
| 1377 | /* Enter the sub mode */ |
| 1378 | monitor_printf(current_monitor->setmem.cmdl,memaddr) ; |
| 1379 | monitor_expect_prompt(NULL,0) ; |
| 1380 | |
| 1381 | while (len) |
| 1382 | { |
| 1383 | val = extract_unsigned_integer(myaddr,4) ; /* REALLY */ |
| 1384 | monitor_printf("%x\r",val) ; |
| 1385 | myaddr += 4 ; |
| 1386 | memaddr += 4 ; |
| 1387 | written += 4 ; |
| 1388 | RDEBUG((" @ %08x\n",memaddr)) |
| 1389 | /* If we wanted to, here we could validate the address */ |
| 1390 | monitor_expect_prompt(NULL,0) ; |
| 1391 | } |
| 1392 | /* Now exit the sub mode */ |
| 1393 | monitor_printf (current_monitor->getreg.term_cmd); |
| 1394 | monitor_expect_prompt(NULL,0) ; |
| 1395 | return written ; |
| 1396 | } |
| 1397 | |
| 1398 | |
| 1399 | static int monitor_write_memory_bytes(memaddr,myaddr,len) |
| 1400 | CORE_ADDR memaddr ; |
| 1401 | char * myaddr ; |
| 1402 | int len ; |
| 1403 | { |
| 1404 | unsigned char val ; |
| 1405 | int written = 0 ; |
| 1406 | if (len == 0) return 0 ; |
| 1407 | /* Enter the sub mode */ |
| 1408 | monitor_printf(current_monitor->setmem.cmdb,memaddr) ; |
| 1409 | monitor_expect_prompt(NULL,0) ; |
| 1410 | while (len) |
| 1411 | { |
| 1412 | val = *myaddr ; |
| 1413 | monitor_printf("%x\r",val) ; |
| 1414 | myaddr++ ; |
| 1415 | memaddr++ ; |
| 1416 | written++ ; |
| 1417 | /* If we wanted to, here we could validate the address */ |
| 1418 | monitor_expect_prompt(NULL,0) ; |
| 1419 | len-- ; |
| 1420 | } |
| 1421 | /* Now exit the sub mode */ |
| 1422 | monitor_printf (current_monitor->getreg.term_cmd); |
| 1423 | monitor_expect_prompt(NULL,0) ; |
| 1424 | return written ; |
| 1425 | } |
| 1426 | |
| 1427 | |
| 1428 | static void |
| 1429 | longlongendswap (unsigned char * a) |
| 1430 | { |
| 1431 | int i,j ; |
| 1432 | unsigned char x ; |
| 1433 | i = 0 ; j = 7 ; |
| 1434 | while (i < 4) |
| 1435 | { x = *(a+i) ; |
| 1436 | *(a+i) = *(a+j) ; |
| 1437 | *(a+j) = x ; |
| 1438 | i++ , j-- ; |
| 1439 | } |
| 1440 | } |
| 1441 | /* Format 32 chars of long long value, advance the pointer */ |
| 1442 | static char * hexlate = "0123456789abcdef" ; |
| 1443 | static char * longlong_hexchars(unsigned long long value, |
| 1444 | char * outbuff ) |
| 1445 | { |
| 1446 | if (value == 0) { *outbuff++ = '0' ; return outbuff ; } |
| 1447 | else |
| 1448 | { static unsigned char disbuf[8] ; /* disassembly buffer */ |
| 1449 | unsigned char * scan , * limit ; /* loop controls */ |
| 1450 | unsigned char c , nib ; |
| 1451 | int leadzero = 1 ; |
| 1452 | scan = disbuf ; limit = scan + 8 ; |
| 1453 | { unsigned long long * dp ; |
| 1454 | dp = (unsigned long long *) scan ; |
| 1455 | *dp = value ; |
| 1456 | } |
| 1457 | longlongendswap(disbuf) ; /* FIXME: ONly on big endian hosts */ |
| 1458 | while (scan < limit) |
| 1459 | { c = *scan++ ; /* a byte of our long long value */ |
| 1460 | if (leadzero) |
| 1461 | if (c == 0) continue ; |
| 1462 | else leadzero = 0 ; /* henceforth we print even zeroes */ |
| 1463 | nib = c >> 4 ; /* high nibble bits */ |
| 1464 | *outbuff++ = hexlate[nib] ; |
| 1465 | nib = c & 0x0f ; /* low nibble bits */ |
| 1466 | *outbuff++ = hexlate[nib] ; |
| 1467 | } |
| 1468 | return outbuff ; |
| 1469 | } |
| 1470 | } /* longlong_hexchars */ |
| 1471 | |
| 1472 | |
| 1473 | |
| 1474 | /* I am only going to call this when writing virtual byte streams. |
| 1475 | Which possably entails endian conversions |
| 1476 | */ |
| 1477 | static int monitor_write_memory_longlongs(memaddr,myaddr,len) |
| 1478 | CORE_ADDR memaddr ; |
| 1479 | char * myaddr ; |
| 1480 | int len ; |
| 1481 | { |
| 1482 | static char hexstage[20] ; /* At least 16 digits required, plus null */ |
| 1483 | char * endstring ; |
| 1484 | long long * llptr ; |
| 1485 | long long value ; |
| 1486 | int written = 0 ; |
| 1487 | llptr = (unsigned long long *) myaddr ; |
| 1488 | if (len == 0 ) return 0 ; |
| 1489 | monitor_printf(current_monitor->setmem.cmdll,memaddr) ; |
| 1490 | monitor_expect_prompt(NULL,0) ; |
| 1491 | while (len >= 8 ) |
| 1492 | { |
| 1493 | value = *llptr ; |
| 1494 | endstring = longlong_hexchars(*llptr,hexstage) ; |
| 1495 | *endstring = '\0' ; /* NUll terminate for printf */ |
| 1496 | monitor_printf("%s\r",hexstage) ; |
| 1497 | llptr++ ; |
| 1498 | memaddr += 8 ; |
| 1499 | written += 8 ; |
| 1500 | /* If we wanted to, here we could validate the address */ |
| 1501 | monitor_expect_prompt(NULL,0) ; |
| 1502 | len -= 8 ; |
| 1503 | } |
| 1504 | /* Now exit the sub mode */ |
| 1505 | monitor_printf (current_monitor->getreg.term_cmd); |
| 1506 | monitor_expect_prompt(NULL,0) ; |
| 1507 | return written ; |
| 1508 | } /* */ |
| 1509 | |
| 1510 | |
| 1511 | |
| 1512 | /* ----- MONITOR_WRITE_MEMORY_BLOCK ---------------------------- */ |
| 1513 | /* This is for the large blocks of memory which may occur in downloading. |
| 1514 | And for monitors which use interactive entry, |
| 1515 | And for monitors which do not have other downloading methods. |
| 1516 | Without this, we will end up calling monitor_write_memory many times |
| 1517 | and do the entry and exit of the sub mode many times |
| 1518 | This currently assumes... |
| 1519 | MO_SETMEM_INTERACTIVE |
| 1520 | ! MO_NO_ECHO_ON_SETMEM |
| 1521 | To use this, the you have to patch the monitor_cmds block with |
| 1522 | this function. Otherwise, its not tuned up for use by all |
| 1523 | monitor variations. |
| 1524 | */ |
| 1525 | |
| 1526 | static int monitor_write_memory_block(memaddr,myaddr,len) |
| 1527 | CORE_ADDR memaddr ; |
| 1528 | char * myaddr ; |
| 1529 | int len ; |
| 1530 | { |
| 1531 | int written ; |
| 1532 | written = 0 ; |
| 1533 | /* FIXME: This would be a good place to put the zero test */ |
| 1534 | #if 1 |
| 1535 | if ((len > 8) && (((len & 0x07)) == 0) && current_monitor->setmem.cmdll) |
| 1536 | { |
| 1537 | return monitor_write_memory_longlongs(memaddr,myaddr,len) ; |
| 1538 | } |
| 1539 | #endif |
| 1540 | #if 0 |
| 1541 | if (len > 4) |
| 1542 | { |
| 1543 | int sublen ; |
| 1544 | written = monitor_write_even_block(memaddr,myaddr,len) ; |
| 1545 | /* Adjust calling parameters by written amount */ |
| 1546 | memaddr += written ; |
| 1547 | myaddr += written ; |
| 1548 | len -= written ; |
| 1549 | } |
| 1550 | #endif |
| 1551 | written = monitor_write_memory_bytes(memaddr,myaddr,len) ; |
| 1552 | return written ; |
| 1553 | } |
| 1554 | |
| 1555 | /* This is an alternate form of monitor_read_memory which is used for monitors |
| 1556 | which can only read a single byte/word/etc. at a time. */ |
| 1557 | |
| 1558 | static int |
| 1559 | monitor_read_memory_single (memaddr, myaddr, len) |
| 1560 | CORE_ADDR memaddr; |
| 1561 | char *myaddr; |
| 1562 | int len; |
| 1563 | { |
| 1564 | unsigned int val; |
| 1565 | char membuf[sizeof(int) * 2 + 1]; |
| 1566 | char *p; |
| 1567 | char *cmd; |
| 1568 | int i; |
| 1569 | |
| 1570 | RDEBUG(("MON read single\n")) ; |
| 1571 | #if 0 |
| 1572 | /* Can't actually use long longs (nice idea, though). In fact, the |
| 1573 | call to strtoul below will fail if it tries to convert a value |
| 1574 | that's too big to fit in a long. */ |
| 1575 | if ((memaddr & 0x7) == 0 && len >= 8 && current_monitor->getmem.cmdll) |
| 1576 | { |
| 1577 | len = 8; |
| 1578 | cmd = current_monitor->getmem.cmdll; |
| 1579 | } |
| 1580 | else |
| 1581 | #endif |
| 1582 | if ((memaddr & 0x3) == 0 && len >= 4 && current_monitor->getmem.cmdl) |
| 1583 | { |
| 1584 | len = 4; |
| 1585 | cmd = current_monitor->getmem.cmdl; |
| 1586 | } |
| 1587 | else if ((memaddr & 0x1) == 0 && len >= 2 && current_monitor->getmem.cmdw) |
| 1588 | { |
| 1589 | len = 2; |
| 1590 | cmd = current_monitor->getmem.cmdw; |
| 1591 | } |
| 1592 | else |
| 1593 | { |
| 1594 | len = 1; |
| 1595 | cmd = current_monitor->getmem.cmdb; |
| 1596 | } |
| 1597 | |
| 1598 | /* Send the examine command. */ |
| 1599 | |
| 1600 | monitor_printf (cmd, memaddr); |
| 1601 | |
| 1602 | /* If RESP_DELIM is specified, we search for that as a leading |
| 1603 | delimiter for the memory value. Otherwise, we just start |
| 1604 | searching from the start of the buf. */ |
| 1605 | |
| 1606 | if (current_monitor->getmem.resp_delim) |
| 1607 | { RDEBUG(("EXP getmem.resp_delim\n")) ; |
| 1608 | monitor_expect_regexp (&getmem_resp_delim_pattern, NULL, 0); |
| 1609 | } |
| 1610 | |
| 1611 | /* Now, read the appropriate number of hex digits for this loc, |
| 1612 | skipping spaces. */ |
| 1613 | |
| 1614 | /* Skip leading spaces and "0x" if MO_HEX_PREFIX flag is set. */ |
| 1615 | if (current_monitor->flags & MO_HEX_PREFIX) |
| 1616 | { |
| 1617 | int c; |
| 1618 | |
| 1619 | c = readchar (timeout); |
| 1620 | while (c == ' ') |
| 1621 | c = readchar (timeout); |
| 1622 | if ((c == '0') && ((c = readchar (timeout)) == 'x')) |
| 1623 | ; |
| 1624 | else |
| 1625 | error ("monitor_read_memory_single (0x%x): bad response from monitor: %.*s%c.", |
| 1626 | memaddr, i, membuf, c); |
| 1627 | } |
| 1628 | for (i = 0; i < len * 2; i++) |
| 1629 | { |
| 1630 | int c; |
| 1631 | |
| 1632 | while (1) |
| 1633 | { |
| 1634 | c = readchar (timeout); |
| 1635 | if (isxdigit (c)) |
| 1636 | break; |
| 1637 | if (c == ' ') |
| 1638 | continue; |
| 1639 | |
| 1640 | error ("monitor_read_memory_single (0x%x): bad response from monitor: %.*s%c.", |
| 1641 | memaddr, i, membuf, c); |
| 1642 | } |
| 1643 | |
| 1644 | membuf[i] = c; |
| 1645 | } |
| 1646 | |
| 1647 | membuf[i] = '\000'; /* terminate the number */ |
| 1648 | |
| 1649 | /* If TERM is present, we wait for that to show up. Also, (if TERM is |
| 1650 | present), we will send TERM_CMD if that is present. In any case, we collect |
| 1651 | all of the output into buf, and then wait for the normal prompt. */ |
| 1652 | |
| 1653 | if (current_monitor->getmem.term) |
| 1654 | { |
| 1655 | monitor_expect (current_monitor->getmem.term, NULL, 0); /* get response */ |
| 1656 | |
| 1657 | if (current_monitor->getmem.term_cmd) |
| 1658 | { |
| 1659 | monitor_printf (current_monitor->getmem.term_cmd); |
| 1660 | monitor_expect_prompt (NULL, 0); |
| 1661 | } |
| 1662 | } |
| 1663 | else |
| 1664 | monitor_expect_prompt (NULL, 0); /* get response */ |
| 1665 | |
| 1666 | p = membuf; |
| 1667 | val = strtoul (membuf, &p, 16); |
| 1668 | |
| 1669 | if (val == 0 && membuf == p) |
| 1670 | error ("monitor_read_memory_single (0x%x): bad value from monitor: %s.", |
| 1671 | memaddr, membuf); |
| 1672 | |
| 1673 | /* supply register stores in target byte order, so swap here */ |
| 1674 | |
| 1675 | store_unsigned_integer (myaddr, len, val); |
| 1676 | |
| 1677 | return len; |
| 1678 | } |
| 1679 | |
| 1680 | /* Copy LEN bytes of data from debugger memory at MYADDR to inferior's |
| 1681 | memory at MEMADDR. Returns length moved. Currently, we do no more |
| 1682 | than 16 bytes at a time. */ |
| 1683 | |
| 1684 | static int |
| 1685 | monitor_read_memory (memaddr, myaddr, len) |
| 1686 | CORE_ADDR memaddr; |
| 1687 | char *myaddr; |
| 1688 | int len; |
| 1689 | { |
| 1690 | unsigned int val; |
| 1691 | char buf[512]; |
| 1692 | char *p, *p1; |
| 1693 | int resp_len; |
| 1694 | int i; |
| 1695 | CORE_ADDR dumpaddr; |
| 1696 | |
| 1697 | if (remote_debug) printf("MON read block ta(%08x) ha(%08x) %d\n", |
| 1698 | (unsigned long) memaddr , (unsigned long)myaddr, len); |
| 1699 | |
| 1700 | if (current_monitor->flags & MO_ADDR_BITS_REMOVE) |
| 1701 | memaddr = ADDR_BITS_REMOVE (memaddr); |
| 1702 | |
| 1703 | if (current_monitor->flags & MO_GETMEM_READ_SINGLE) |
| 1704 | return monitor_read_memory_single (memaddr, myaddr, len); |
| 1705 | |
| 1706 | len = min (len, 16); |
| 1707 | |
| 1708 | /* Some dumpers align the first data with the preceeding 16 |
| 1709 | byte boundary. Some print blanks and start at the |
| 1710 | requested boundary. EXACT_DUMPADDR |
| 1711 | */ |
| 1712 | |
| 1713 | dumpaddr = (current_monitor->flags & MO_EXACT_DUMPADDR) |
| 1714 | ? memaddr : memaddr & ~ 0x0f ; |
| 1715 | |
| 1716 | /* See if xfer would cross a 16 byte boundary. If so, clip it. */ |
| 1717 | if (((memaddr ^ (memaddr + len - 1)) & ~0xf) != 0) |
| 1718 | len = ((memaddr + len) & ~0xf) - memaddr; |
| 1719 | |
| 1720 | /* send the memory examine command */ |
| 1721 | |
| 1722 | if (current_monitor->flags & MO_GETMEM_NEEDS_RANGE) |
| 1723 | monitor_printf (current_monitor->getmem.cmdb, memaddr, memaddr + len - 1); |
| 1724 | else if (current_monitor->flags & MO_GETMEM_16_BOUNDARY) |
| 1725 | monitor_printf (current_monitor->getmem.cmdb, dumpaddr); |
| 1726 | else |
| 1727 | monitor_printf (current_monitor->getmem.cmdb, memaddr, len); |
| 1728 | |
| 1729 | /* If TERM is present, we wait for that to show up. Also, (if TERM |
| 1730 | is present), we will send TERM_CMD if that is present. In any |
| 1731 | case, we collect all of the output into buf, and then wait for |
| 1732 | the normal prompt. */ |
| 1733 | |
| 1734 | if (current_monitor->getmem.term) |
| 1735 | { |
| 1736 | resp_len = monitor_expect (current_monitor->getmem.term, buf, sizeof buf); /* get response */ |
| 1737 | |
| 1738 | if (resp_len <= 0) |
| 1739 | error ("monitor_read_memory (0x%x): excessive response from monitor: %.*s.", |
| 1740 | memaddr, resp_len, buf); |
| 1741 | |
| 1742 | if (current_monitor->getmem.term_cmd) |
| 1743 | { |
| 1744 | SERIAL_WRITE (monitor_desc, current_monitor->getmem.term_cmd, |
| 1745 | strlen (current_monitor->getmem.term_cmd)); |
| 1746 | monitor_expect_prompt (NULL, 0); |
| 1747 | } |
| 1748 | } |
| 1749 | else |
| 1750 | resp_len = monitor_expect_prompt (buf, sizeof buf); /* get response */ |
| 1751 | |
| 1752 | p = buf; |
| 1753 | |
| 1754 | /* If RESP_DELIM is specified, we search for that as a leading |
| 1755 | delimiter for the values. Otherwise, we just start searching |
| 1756 | from the start of the buf. */ |
| 1757 | |
| 1758 | if (current_monitor->getmem.resp_delim) |
| 1759 | { |
| 1760 | int retval, tmp; |
| 1761 | struct re_registers resp_strings; |
| 1762 | RDEBUG(("MON getmem.resp_delim %s\n",current_monitor->getmem.resp_delim)) ; |
| 1763 | |
| 1764 | memset (&resp_strings, 0, sizeof (struct re_registers)); |
| 1765 | tmp = strlen (p); |
| 1766 | retval = re_search (&getmem_resp_delim_pattern, p, tmp, 0, tmp, |
| 1767 | &resp_strings); |
| 1768 | |
| 1769 | if (retval < 0) |
| 1770 | error ("monitor_read_memory (0x%x): bad response from monitor: %.*s.", |
| 1771 | memaddr, resp_len, buf); |
| 1772 | |
| 1773 | p += resp_strings.end[0]; |
| 1774 | #if 0 |
| 1775 | p = strstr (p, current_monitor->getmem.resp_delim); |
| 1776 | if (!p) |
| 1777 | error ("monitor_read_memory (0x%x): bad response from monitor: %.*s.", |
| 1778 | memaddr, resp_len, buf); |
| 1779 | p += strlen (current_monitor->getmem.resp_delim); |
| 1780 | #endif |
| 1781 | } |
| 1782 | if (remote_debug) printf("MON scanning %d ,%08x '%s'\n",len,p,p) ; |
| 1783 | if (current_monitor->flags & MO_GETMEM_16_BOUNDARY) |
| 1784 | { |
| 1785 | char c ; |
| 1786 | int fetched = 0 ; |
| 1787 | i = len; |
| 1788 | c = *p ; |
| 1789 | |
| 1790 | |
| 1791 | while (!(c == '\000' || c == '\n' || c == '\r') && i > 0) |
| 1792 | { if (isxdigit (c)) |
| 1793 | { if ((dumpaddr >= memaddr) && (i > 0)) |
| 1794 | { val = fromhex (c) * 16 + fromhex (*(p+1)); |
| 1795 | *myaddr++ = val; |
| 1796 | if (remote_debug) printf("[%02x]",val) ; |
| 1797 | --i; |
| 1798 | fetched++ ; |
| 1799 | } |
| 1800 | ++dumpaddr; |
| 1801 | ++p; |
| 1802 | } |
| 1803 | ++p; /* skip a blank or other non hex char */ |
| 1804 | c = *p ; |
| 1805 | } |
| 1806 | if (fetched == 0) error("Failed to read via monitor") ; |
| 1807 | if (remote_debug) printf("\n") ; |
| 1808 | return fetched ; /* Return the number of bytes actually read */ |
| 1809 | } |
| 1810 | RDEBUG(("MON scanning bytes\n")) ; |
| 1811 | |
| 1812 | for (i = len; i > 0; i--) |
| 1813 | { |
| 1814 | /* Skip non-hex chars, but bomb on end of string and newlines */ |
| 1815 | |
| 1816 | while (1) |
| 1817 | { |
| 1818 | if (isxdigit (*p)) |
| 1819 | break; |
| 1820 | |
| 1821 | if (*p == '\000' || *p == '\n' || *p == '\r') |
| 1822 | error ("monitor_read_memory (0x%x): badly terminated response from monitor: %.*s", memaddr, resp_len, buf); |
| 1823 | p++; |
| 1824 | } |
| 1825 | |
| 1826 | val = strtoul (p, &p1, 16); |
| 1827 | |
| 1828 | if (val == 0 && p == p1) |
| 1829 | error ("monitor_read_memory (0x%x): bad value from monitor: %.*s.", memaddr, |
| 1830 | resp_len, buf); |
| 1831 | |
| 1832 | *myaddr++ = val; |
| 1833 | |
| 1834 | if (i == 1) |
| 1835 | break; |
| 1836 | |
| 1837 | p = p1; |
| 1838 | } |
| 1839 | |
| 1840 | return len; |
| 1841 | } |
| 1842 | |
| 1843 | static int |
| 1844 | monitor_xfer_memory (memaddr, myaddr, len, write, target) |
| 1845 | CORE_ADDR memaddr; |
| 1846 | char *myaddr; |
| 1847 | int len; |
| 1848 | int write; |
| 1849 | struct target_ops *target; /* ignored */ |
| 1850 | { |
| 1851 | return dcache_xfer_memory (remote_dcache, memaddr, myaddr, len, write); |
| 1852 | } |
| 1853 | |
| 1854 | static void |
| 1855 | monitor_kill () |
| 1856 | { |
| 1857 | return; /* ignore attempts to kill target system */ |
| 1858 | } |
| 1859 | |
| 1860 | /* All we actually do is set the PC to the start address of exec_bfd, and start |
| 1861 | the program at that point. */ |
| 1862 | |
| 1863 | static void |
| 1864 | monitor_create_inferior (exec_file, args, env) |
| 1865 | char *exec_file; |
| 1866 | char *args; |
| 1867 | char **env; |
| 1868 | { |
| 1869 | if (args && (*args != '\000')) |
| 1870 | error ("Args are not supported by the monitor."); |
| 1871 | |
| 1872 | first_time = 1; |
| 1873 | clear_proceed_status (); |
| 1874 | proceed (bfd_get_start_address (exec_bfd), TARGET_SIGNAL_0, 0); |
| 1875 | } |
| 1876 | |
| 1877 | /* Clean up when a program exits. |
| 1878 | The program actually lives on in the remote processor's RAM, and may be |
| 1879 | run again without a download. Don't leave it full of breakpoint |
| 1880 | instructions. */ |
| 1881 | |
| 1882 | static void |
| 1883 | monitor_mourn_inferior () |
| 1884 | { |
| 1885 | unpush_target (targ_ops); |
| 1886 | generic_mourn_inferior (); /* Do all the proper things now */ |
| 1887 | } |
| 1888 | |
| 1889 | #define NUM_MONITOR_BREAKPOINTS 8 |
| 1890 | |
| 1891 | static CORE_ADDR breakaddr[NUM_MONITOR_BREAKPOINTS] = {0}; |
| 1892 | |
| 1893 | /* Tell the monitor to add a breakpoint. */ |
| 1894 | |
| 1895 | static int |
| 1896 | monitor_insert_breakpoint (addr, shadow) |
| 1897 | CORE_ADDR addr; |
| 1898 | char *shadow; |
| 1899 | { |
| 1900 | int i; |
| 1901 | unsigned char *bp; |
| 1902 | int bplen; |
| 1903 | |
| 1904 | RDEBUG(("MON inst bkpt %08x\n",addr)) |
| 1905 | if (current_monitor->set_break == NULL) |
| 1906 | error ("No set_break defined for this monitor"); |
| 1907 | |
| 1908 | if (current_monitor->flags & MO_ADDR_BITS_REMOVE) |
| 1909 | addr = ADDR_BITS_REMOVE (addr); |
| 1910 | |
| 1911 | /* Determine appropriate breakpoint size for this address. */ |
| 1912 | bp = memory_breakpoint_from_pc (&addr, &bplen); |
| 1913 | |
| 1914 | for (i = 0; i < NUM_MONITOR_BREAKPOINTS; i++) |
| 1915 | { |
| 1916 | if (breakaddr[i] == 0) |
| 1917 | { |
| 1918 | breakaddr[i] = addr; |
| 1919 | monitor_read_memory (addr, shadow, bplen); |
| 1920 | monitor_printf (current_monitor->set_break, addr); |
| 1921 | monitor_expect_prompt (NULL, 0); |
| 1922 | return 0; |
| 1923 | } |
| 1924 | } |
| 1925 | |
| 1926 | error ("Too many breakpoints (> %d) for monitor.", NUM_MONITOR_BREAKPOINTS); |
| 1927 | } |
| 1928 | |
| 1929 | /* Tell the monitor to remove a breakpoint. */ |
| 1930 | |
| 1931 | static int |
| 1932 | monitor_remove_breakpoint (addr, shadow) |
| 1933 | CORE_ADDR addr; |
| 1934 | char *shadow; |
| 1935 | { |
| 1936 | int i; |
| 1937 | |
| 1938 | RDEBUG(("MON rmbkpt %08x\n",addr)) |
| 1939 | if (current_monitor->clr_break == NULL) |
| 1940 | error ("No clr_break defined for this monitor"); |
| 1941 | |
| 1942 | if (current_monitor->flags & MO_ADDR_BITS_REMOVE) |
| 1943 | addr = ADDR_BITS_REMOVE (addr); |
| 1944 | |
| 1945 | for (i = 0; i < NUM_MONITOR_BREAKPOINTS; i++) |
| 1946 | { |
| 1947 | if (breakaddr[i] == addr) |
| 1948 | { |
| 1949 | breakaddr[i] = 0; |
| 1950 | /* some monitors remove breakpoints based on the address */ |
| 1951 | if (current_monitor->flags & MO_CLR_BREAK_USES_ADDR) |
| 1952 | monitor_printf (current_monitor->clr_break, addr); |
| 1953 | else if (current_monitor->flags & MO_CLR_BREAK_1_BASED) |
| 1954 | monitor_printf (current_monitor->clr_break, i + 1); |
| 1955 | else |
| 1956 | monitor_printf (current_monitor->clr_break, i); |
| 1957 | monitor_expect_prompt (NULL, 0); |
| 1958 | return 0; |
| 1959 | } |
| 1960 | } |
| 1961 | fprintf_unfiltered (stderr, "Can't find breakpoint associated with 0x%x\n", addr); |
| 1962 | return 1; |
| 1963 | } |
| 1964 | |
| 1965 | /* monitor_wait_srec_ack -- wait for the target to send an acknowledgement for |
| 1966 | an S-record. Return non-zero if the ACK is received properly. */ |
| 1967 | |
| 1968 | static int |
| 1969 | monitor_wait_srec_ack () |
| 1970 | { |
| 1971 | int i, ch; |
| 1972 | |
| 1973 | if (current_monitor->flags & MO_SREC_ACK_PLUS) |
| 1974 | { |
| 1975 | return (readchar (timeout) == '+'); |
| 1976 | } |
| 1977 | else if (current_monitor->flags & MO_SREC_ACK_ROTATE) |
| 1978 | { |
| 1979 | /* Eat two backspaces, a "rotating" char (|/-\), and a space. */ |
| 1980 | if ((ch = readchar (1)) < 0) |
| 1981 | return 0; |
| 1982 | if ((ch = readchar (1)) < 0) |
| 1983 | return 0; |
| 1984 | if ((ch = readchar (1)) < 0) |
| 1985 | return 0; |
| 1986 | if ((ch = readchar (1)) < 0) |
| 1987 | return 0; |
| 1988 | } |
| 1989 | return 1; |
| 1990 | } |
| 1991 | |
| 1992 | /* monitor_load -- download a file. */ |
| 1993 | |
| 1994 | static void |
| 1995 | monitor_load (file, from_tty) |
| 1996 | char *file; |
| 1997 | int from_tty; |
| 1998 | { |
| 1999 | dcache_flush (remote_dcache); |
| 2000 | RDEBUG(("MON load\n")) |
| 2001 | |
| 2002 | if (current_monitor->load_routine) |
| 2003 | current_monitor->load_routine (monitor_desc, file, hashmark); |
| 2004 | else |
| 2005 | { /* The default is ascii S-records */ |
| 2006 | int n; |
| 2007 | unsigned long load_offset; |
| 2008 | char buf[128]; |
| 2009 | |
| 2010 | /* enable user to specify address for downloading as 2nd arg to load */ |
| 2011 | n = sscanf (file, "%s 0x%lx", buf, &load_offset); |
| 2012 | if (n > 1) |
| 2013 | file = buf; |
| 2014 | else |
| 2015 | load_offset = 0; |
| 2016 | |
| 2017 | monitor_printf (current_monitor->load); |
| 2018 | if (current_monitor->loadresp) |
| 2019 | monitor_expect (current_monitor->loadresp, NULL, 0); |
| 2020 | |
| 2021 | load_srec (monitor_desc, file, (bfd_vma) load_offset, |
| 2022 | 32, SREC_ALL, hashmark, |
| 2023 | current_monitor->flags & MO_SREC_ACK ? |
| 2024 | monitor_wait_srec_ack : NULL); |
| 2025 | |
| 2026 | monitor_expect_prompt (NULL, 0); |
| 2027 | } |
| 2028 | |
| 2029 | /* Finally, make the PC point at the start address */ |
| 2030 | |
| 2031 | if (exec_bfd) |
| 2032 | write_pc (bfd_get_start_address (exec_bfd)); |
| 2033 | |
| 2034 | inferior_pid = 0; /* No process now */ |
| 2035 | |
| 2036 | /* This is necessary because many things were based on the PC at the time that |
| 2037 | we attached to the monitor, which is no longer valid now that we have loaded |
| 2038 | new code (and just changed the PC). Another way to do this might be to call |
| 2039 | normal_stop, except that the stack may not be valid, and things would get |
| 2040 | horribly confused... */ |
| 2041 | |
| 2042 | clear_symtab_users (); |
| 2043 | } |
| 2044 | |
| 2045 | static void |
| 2046 | monitor_stop () |
| 2047 | { |
| 2048 | RDEBUG(("MON stop\n")) ; |
| 2049 | if ((current_monitor->flags & MO_SEND_BREAK_ON_STOP) != 0) |
| 2050 | SERIAL_SEND_BREAK (monitor_desc); |
| 2051 | if (current_monitor->stop) |
| 2052 | monitor_printf_noecho (current_monitor->stop); |
| 2053 | } |
| 2054 | |
| 2055 | /* Put a command string, in args, out to MONITOR. Output from MONITOR |
| 2056 | is placed on the users terminal until the prompt is seen. FIXME: We |
| 2057 | read the characters ourseleves here cause of a nasty echo. */ |
| 2058 | |
| 2059 | static void |
| 2060 | monitor_command (args, from_tty) |
| 2061 | char *args; |
| 2062 | int from_tty; |
| 2063 | { |
| 2064 | char *p; |
| 2065 | int resp_len; |
| 2066 | char buf[1000]; |
| 2067 | |
| 2068 | if (monitor_desc == NULL) |
| 2069 | error ("monitor target not open."); |
| 2070 | |
| 2071 | p = current_monitor->prompt; |
| 2072 | |
| 2073 | /* Send the command. Note that if no args were supplied, then we're |
| 2074 | just sending the monitor a newline, which is sometimes useful. */ |
| 2075 | |
| 2076 | monitor_printf ("%s\r", (args ? args : "")); |
| 2077 | |
| 2078 | resp_len = monitor_expect_prompt (buf, sizeof buf); |
| 2079 | |
| 2080 | fputs_unfiltered (buf, gdb_stdout); /* Output the response */ |
| 2081 | } |
| 2082 | |
| 2083 | /* Convert hex digit A to a number. */ |
| 2084 | |
| 2085 | #if 0 |
| 2086 | static int |
| 2087 | from_hex (a) |
| 2088 | int a; |
| 2089 | { |
| 2090 | if (a >= '0' && a <= '9') |
| 2091 | return a - '0'; |
| 2092 | if (a >= 'a' && a <= 'f') |
| 2093 | return a - 'a' + 10; |
| 2094 | if (a >= 'A' && a <= 'F') |
| 2095 | return a - 'A' + 10; |
| 2096 | |
| 2097 | error ("Reply contains invalid hex digit 0x%x", a); |
| 2098 | } |
| 2099 | #endif |
| 2100 | |
| 2101 | char * |
| 2102 | monitor_get_dev_name () |
| 2103 | { |
| 2104 | return dev_name; |
| 2105 | } |
| 2106 | |
| 2107 | static struct target_ops monitor_ops ; |
| 2108 | |
| 2109 | static void init_base_monitor_ops(void) |
| 2110 | { |
| 2111 | monitor_ops.to_shortname = NULL; |
| 2112 | monitor_ops.to_longname = NULL; |
| 2113 | monitor_ops.to_doc = NULL; |
| 2114 | monitor_ops.to_open = NULL; |
| 2115 | monitor_ops.to_close = monitor_close; |
| 2116 | monitor_ops.to_attach = NULL; |
| 2117 | monitor_ops.to_detach = monitor_detach; |
| 2118 | monitor_ops.to_resume = monitor_resume; |
| 2119 | monitor_ops.to_wait = monitor_wait; |
| 2120 | monitor_ops.to_fetch_registers = monitor_fetch_registers; |
| 2121 | monitor_ops.to_store_registers = monitor_store_registers; |
| 2122 | monitor_ops.to_prepare_to_store = monitor_prepare_to_store; |
| 2123 | monitor_ops.to_xfer_memory = monitor_xfer_memory; |
| 2124 | monitor_ops.to_files_info = monitor_files_info; |
| 2125 | monitor_ops.to_insert_breakpoint = monitor_insert_breakpoint; |
| 2126 | monitor_ops.to_remove_breakpoint = monitor_remove_breakpoint; |
| 2127 | monitor_ops.to_terminal_init = 0; |
| 2128 | monitor_ops.to_terminal_inferior = 0; |
| 2129 | monitor_ops.to_terminal_ours_for_output = 0; |
| 2130 | monitor_ops.to_terminal_ours = 0; |
| 2131 | monitor_ops.to_terminal_info = 0; |
| 2132 | monitor_ops.to_kill = monitor_kill; |
| 2133 | monitor_ops.to_load = monitor_load; |
| 2134 | monitor_ops.to_lookup_symbol = 0; |
| 2135 | monitor_ops.to_create_inferior = monitor_create_inferior; |
| 2136 | monitor_ops.to_mourn_inferior = monitor_mourn_inferior; |
| 2137 | monitor_ops.to_can_run = 0; |
| 2138 | monitor_ops.to_notice_signals = 0; |
| 2139 | monitor_ops.to_thread_alive = 0; |
| 2140 | monitor_ops.to_stop = monitor_stop; |
| 2141 | monitor_ops.to_stratum = process_stratum; |
| 2142 | monitor_ops.DONT_USE = 0; |
| 2143 | monitor_ops.to_has_all_memory = 1; |
| 2144 | monitor_ops.to_has_memory = 1; |
| 2145 | monitor_ops.to_has_stack = 1; |
| 2146 | monitor_ops.to_has_registers = 1; |
| 2147 | monitor_ops.to_has_execution = 1; |
| 2148 | monitor_ops.to_sections = 0; |
| 2149 | monitor_ops.to_sections_end = 0; |
| 2150 | monitor_ops.to_magic = OPS_MAGIC ; |
| 2151 | } /* init_monitor_ops */ |
| 2152 | |
| 2153 | /* Init the target_ops structure pointed at by OPS */ |
| 2154 | |
| 2155 | void |
| 2156 | init_monitor_ops (ops) |
| 2157 | struct target_ops *ops; |
| 2158 | { |
| 2159 | memcpy (ops, &monitor_ops, sizeof monitor_ops); |
| 2160 | } |
| 2161 | |
| 2162 | /* Define additional commands that are usually only used by monitors. */ |
| 2163 | |
| 2164 | void |
| 2165 | _initialize_remote_monitors () |
| 2166 | { |
| 2167 | init_base_monitor_ops() ; |
| 2168 | add_show_from_set (add_set_cmd ("hash", no_class, var_boolean, |
| 2169 | (char *)&hashmark, |
| 2170 | "Set display of activity while downloading a file.\n\ |
| 2171 | When enabled, a hashmark \'#\' is displayed.", |
| 2172 | &setlist), |
| 2173 | &showlist); |
| 2174 | |
| 2175 | add_com ("monitor", class_obscure, monitor_command, |
| 2176 | "Send a command to the debug monitor."); |
| 2177 | } |