| 1 | /* Remote debugging interface for boot monitors, for GDB. |
| 2 | |
| 3 | Copyright (C) 1990-2014 Free Software Foundation, Inc. |
| 4 | |
| 5 | Contributed by Cygnus Support. Written by Rob Savoye for Cygnus. |
| 6 | Resurrected from the ashes by Stu Grossman. |
| 7 | |
| 8 | This file is part of GDB. |
| 9 | |
| 10 | This program is free software; you can redistribute it and/or modify |
| 11 | it under the terms of the GNU General Public License as published by |
| 12 | the Free Software Foundation; either version 3 of the License, or |
| 13 | (at your option) any later version. |
| 14 | |
| 15 | This program is distributed in the hope that it will be useful, |
| 16 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 18 | GNU General Public License for more details. |
| 19 | |
| 20 | You should have received a copy of the GNU General Public License |
| 21 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| 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 existence, 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 "exceptions.h" |
| 44 | #include <signal.h> |
| 45 | #include <ctype.h> |
| 46 | #include <string.h> |
| 47 | #include <sys/types.h> |
| 48 | #include "command.h" |
| 49 | #include "serial.h" |
| 50 | #include "monitor.h" |
| 51 | #include "gdbcmd.h" |
| 52 | #include "inferior.h" |
| 53 | #include "gdb_regex.h" |
| 54 | #include "srec.h" |
| 55 | #include "regcache.h" |
| 56 | #include "gdbthread.h" |
| 57 | #include "readline/readline.h" |
| 58 | |
| 59 | static char *dev_name; |
| 60 | static struct target_ops *targ_ops; |
| 61 | |
| 62 | static void monitor_interrupt_query (void); |
| 63 | static void monitor_interrupt_twice (int); |
| 64 | static void monitor_stop (ptid_t); |
| 65 | static void monitor_dump_regs (struct regcache *regcache); |
| 66 | |
| 67 | #if 0 |
| 68 | static int from_hex (int a); |
| 69 | #endif |
| 70 | |
| 71 | static struct monitor_ops *current_monitor; |
| 72 | |
| 73 | static int hashmark; /* flag set by "set hash". */ |
| 74 | |
| 75 | static int timeout = 30; |
| 76 | |
| 77 | static int in_monitor_wait = 0; /* Non-zero means we are in monitor_wait(). */ |
| 78 | |
| 79 | static void (*ofunc) (); /* Old SIGINT signal handler. */ |
| 80 | |
| 81 | static CORE_ADDR *breakaddr; |
| 82 | |
| 83 | /* Descriptor for I/O to remote machine. Initialize it to NULL so |
| 84 | that monitor_open knows that we don't have a file open when the |
| 85 | program starts. */ |
| 86 | |
| 87 | static struct serial *monitor_desc = NULL; |
| 88 | |
| 89 | /* Pointer to regexp pattern matching data. */ |
| 90 | |
| 91 | static struct re_pattern_buffer register_pattern; |
| 92 | static char register_fastmap[256]; |
| 93 | |
| 94 | static struct re_pattern_buffer getmem_resp_delim_pattern; |
| 95 | static char getmem_resp_delim_fastmap[256]; |
| 96 | |
| 97 | static struct re_pattern_buffer setmem_resp_delim_pattern; |
| 98 | static char setmem_resp_delim_fastmap[256]; |
| 99 | |
| 100 | static struct re_pattern_buffer setreg_resp_delim_pattern; |
| 101 | static char setreg_resp_delim_fastmap[256]; |
| 102 | |
| 103 | static int dump_reg_flag; /* Non-zero means do a dump_registers cmd when |
| 104 | monitor_wait wakes up. */ |
| 105 | |
| 106 | static int first_time = 0; /* Is this the first time we're |
| 107 | executing after gaving created the |
| 108 | child proccess? */ |
| 109 | |
| 110 | |
| 111 | /* This is the ptid we use while we're connected to a monitor. Its |
| 112 | value is arbitrary, as monitor targets don't have a notion of |
| 113 | processes or threads, but we need something non-null to place in |
| 114 | inferior_ptid. */ |
| 115 | static ptid_t monitor_ptid; |
| 116 | |
| 117 | #define TARGET_BUF_SIZE 2048 |
| 118 | |
| 119 | /* Monitor specific debugging information. Typically only useful to |
| 120 | the developer of a new monitor interface. */ |
| 121 | |
| 122 | static void monitor_debug (const char *fmt, ...) ATTRIBUTE_PRINTF (1, 2); |
| 123 | |
| 124 | static unsigned int monitor_debug_p = 0; |
| 125 | |
| 126 | /* NOTE: This file alternates between monitor_debug_p and remote_debug |
| 127 | when determining if debug information is printed. Perhaps this |
| 128 | could be simplified. */ |
| 129 | |
| 130 | static void |
| 131 | monitor_debug (const char *fmt, ...) |
| 132 | { |
| 133 | if (monitor_debug_p) |
| 134 | { |
| 135 | va_list args; |
| 136 | |
| 137 | va_start (args, fmt); |
| 138 | vfprintf_filtered (gdb_stdlog, fmt, args); |
| 139 | va_end (args); |
| 140 | } |
| 141 | } |
| 142 | |
| 143 | |
| 144 | /* Convert a string into a printable representation, Return # byte in |
| 145 | the new string. When LEN is >0 it specifies the size of the |
| 146 | string. Otherwize strlen(oldstr) is used. */ |
| 147 | |
| 148 | static void |
| 149 | monitor_printable_string (char *newstr, char *oldstr, int len) |
| 150 | { |
| 151 | int ch; |
| 152 | int i; |
| 153 | |
| 154 | if (len <= 0) |
| 155 | len = strlen (oldstr); |
| 156 | |
| 157 | for (i = 0; i < len; i++) |
| 158 | { |
| 159 | ch = oldstr[i]; |
| 160 | switch (ch) |
| 161 | { |
| 162 | default: |
| 163 | if (isprint (ch)) |
| 164 | *newstr++ = ch; |
| 165 | |
| 166 | else |
| 167 | { |
| 168 | sprintf (newstr, "\\x%02x", ch & 0xff); |
| 169 | newstr += 4; |
| 170 | } |
| 171 | break; |
| 172 | |
| 173 | case '\\': |
| 174 | *newstr++ = '\\'; |
| 175 | *newstr++ = '\\'; |
| 176 | break; |
| 177 | case '\b': |
| 178 | *newstr++ = '\\'; |
| 179 | *newstr++ = 'b'; |
| 180 | break; |
| 181 | case '\f': |
| 182 | *newstr++ = '\\'; |
| 183 | *newstr++ = 't'; |
| 184 | break; |
| 185 | case '\n': |
| 186 | *newstr++ = '\\'; |
| 187 | *newstr++ = 'n'; |
| 188 | break; |
| 189 | case '\r': |
| 190 | *newstr++ = '\\'; |
| 191 | *newstr++ = 'r'; |
| 192 | break; |
| 193 | case '\t': |
| 194 | *newstr++ = '\\'; |
| 195 | *newstr++ = 't'; |
| 196 | break; |
| 197 | case '\v': |
| 198 | *newstr++ = '\\'; |
| 199 | *newstr++ = 'v'; |
| 200 | break; |
| 201 | } |
| 202 | } |
| 203 | |
| 204 | *newstr++ = '\0'; |
| 205 | } |
| 206 | |
| 207 | /* Print monitor errors with a string, converting the string to printable |
| 208 | representation. */ |
| 209 | |
| 210 | static void |
| 211 | monitor_error (char *function, char *message, |
| 212 | CORE_ADDR memaddr, int len, char *string, int final_char) |
| 213 | { |
| 214 | int real_len = (len == 0 && string != (char *) 0) ? strlen (string) : len; |
| 215 | char *safe_string = alloca ((real_len * 4) + 1); |
| 216 | |
| 217 | monitor_printable_string (safe_string, string, real_len); |
| 218 | |
| 219 | if (final_char) |
| 220 | error (_("%s (%s): %s: %s%c"), |
| 221 | function, paddress (target_gdbarch (), memaddr), |
| 222 | message, safe_string, final_char); |
| 223 | else |
| 224 | error (_("%s (%s): %s: %s"), |
| 225 | function, paddress (target_gdbarch (), memaddr), |
| 226 | message, safe_string); |
| 227 | } |
| 228 | |
| 229 | /* Convert hex digit A to a number. */ |
| 230 | |
| 231 | static int |
| 232 | fromhex (int a) |
| 233 | { |
| 234 | if (a >= '0' && a <= '9') |
| 235 | return a - '0'; |
| 236 | else if (a >= 'a' && a <= 'f') |
| 237 | return a - 'a' + 10; |
| 238 | else if (a >= 'A' && a <= 'F') |
| 239 | return a - 'A' + 10; |
| 240 | else |
| 241 | error (_("Invalid hex digit %d"), a); |
| 242 | } |
| 243 | |
| 244 | /* monitor_vsprintf - similar to vsprintf but handles 64-bit addresses |
| 245 | |
| 246 | This function exists to get around the problem that many host platforms |
| 247 | don't have a printf that can print 64-bit addresses. The %A format |
| 248 | specification is recognized as a special case, and causes the argument |
| 249 | to be printed as a 64-bit hexadecimal address. |
| 250 | |
| 251 | Only format specifiers of the form "[0-9]*[a-z]" are recognized. |
| 252 | If it is a '%s' format, the argument is a string; otherwise the |
| 253 | argument is assumed to be a long integer. |
| 254 | |
| 255 | %% is also turned into a single %. */ |
| 256 | |
| 257 | static void |
| 258 | monitor_vsprintf (char *sndbuf, char *pattern, va_list args) |
| 259 | { |
| 260 | int addr_bit = gdbarch_addr_bit (target_gdbarch ()); |
| 261 | char format[10]; |
| 262 | char fmt; |
| 263 | char *p; |
| 264 | int i; |
| 265 | long arg_int; |
| 266 | CORE_ADDR arg_addr; |
| 267 | char *arg_string; |
| 268 | |
| 269 | for (p = pattern; *p; p++) |
| 270 | { |
| 271 | if (*p == '%') |
| 272 | { |
| 273 | /* Copy the format specifier to a separate buffer. */ |
| 274 | format[0] = *p++; |
| 275 | for (i = 1; *p >= '0' && *p <= '9' && i < (int) sizeof (format) - 2; |
| 276 | i++, p++) |
| 277 | format[i] = *p; |
| 278 | format[i] = fmt = *p; |
| 279 | format[i + 1] = '\0'; |
| 280 | |
| 281 | /* Fetch the next argument and print it. */ |
| 282 | switch (fmt) |
| 283 | { |
| 284 | case '%': |
| 285 | strcpy (sndbuf, "%"); |
| 286 | break; |
| 287 | case 'A': |
| 288 | arg_addr = va_arg (args, CORE_ADDR); |
| 289 | strcpy (sndbuf, phex_nz (arg_addr, addr_bit / 8)); |
| 290 | break; |
| 291 | case 's': |
| 292 | arg_string = va_arg (args, char *); |
| 293 | sprintf (sndbuf, format, arg_string); |
| 294 | break; |
| 295 | default: |
| 296 | arg_int = va_arg (args, long); |
| 297 | sprintf (sndbuf, format, arg_int); |
| 298 | break; |
| 299 | } |
| 300 | sndbuf += strlen (sndbuf); |
| 301 | } |
| 302 | else |
| 303 | *sndbuf++ = *p; |
| 304 | } |
| 305 | *sndbuf = '\0'; |
| 306 | } |
| 307 | |
| 308 | |
| 309 | /* monitor_printf_noecho -- Send data to monitor, but don't expect an echo. |
| 310 | Works just like printf. */ |
| 311 | |
| 312 | void |
| 313 | monitor_printf_noecho (char *pattern,...) |
| 314 | { |
| 315 | va_list args; |
| 316 | char sndbuf[2000]; |
| 317 | int len; |
| 318 | |
| 319 | va_start (args, pattern); |
| 320 | |
| 321 | monitor_vsprintf (sndbuf, pattern, args); |
| 322 | |
| 323 | len = strlen (sndbuf); |
| 324 | if (len + 1 > sizeof sndbuf) |
| 325 | internal_error (__FILE__, __LINE__, |
| 326 | _("failed internal consistency check")); |
| 327 | |
| 328 | if (monitor_debug_p) |
| 329 | { |
| 330 | char *safe_string = (char *) alloca ((strlen (sndbuf) * 4) + 1); |
| 331 | |
| 332 | monitor_printable_string (safe_string, sndbuf, 0); |
| 333 | fprintf_unfiltered (gdb_stdlog, "sent[%s]\n", safe_string); |
| 334 | } |
| 335 | |
| 336 | monitor_write (sndbuf, len); |
| 337 | } |
| 338 | |
| 339 | /* monitor_printf -- Send data to monitor and check the echo. Works just like |
| 340 | printf. */ |
| 341 | |
| 342 | void |
| 343 | monitor_printf (char *pattern,...) |
| 344 | { |
| 345 | va_list args; |
| 346 | char sndbuf[2000]; |
| 347 | int len; |
| 348 | |
| 349 | va_start (args, pattern); |
| 350 | |
| 351 | monitor_vsprintf (sndbuf, pattern, args); |
| 352 | |
| 353 | len = strlen (sndbuf); |
| 354 | if (len + 1 > sizeof sndbuf) |
| 355 | internal_error (__FILE__, __LINE__, |
| 356 | _("failed internal consistency check")); |
| 357 | |
| 358 | if (monitor_debug_p) |
| 359 | { |
| 360 | char *safe_string = (char *) alloca ((len * 4) + 1); |
| 361 | |
| 362 | monitor_printable_string (safe_string, sndbuf, 0); |
| 363 | fprintf_unfiltered (gdb_stdlog, "sent[%s]\n", safe_string); |
| 364 | } |
| 365 | |
| 366 | monitor_write (sndbuf, len); |
| 367 | |
| 368 | /* We used to expect that the next immediate output was the |
| 369 | characters we just output, but sometimes some extra junk appeared |
| 370 | before the characters we expected, like an extra prompt, or a |
| 371 | portmaster sending telnet negotiations. So, just start searching |
| 372 | for what we sent, and skip anything unknown. */ |
| 373 | monitor_debug ("ExpectEcho\n"); |
| 374 | monitor_expect (sndbuf, (char *) 0, 0); |
| 375 | } |
| 376 | |
| 377 | |
| 378 | /* Write characters to the remote system. */ |
| 379 | |
| 380 | void |
| 381 | monitor_write (char *buf, int buflen) |
| 382 | { |
| 383 | if (serial_write (monitor_desc, buf, buflen)) |
| 384 | fprintf_unfiltered (gdb_stderr, "serial_write failed: %s\n", |
| 385 | safe_strerror (errno)); |
| 386 | } |
| 387 | |
| 388 | |
| 389 | /* Read a binary character from the remote system, doing all the fancy |
| 390 | timeout stuff, but without interpreting the character in any way, |
| 391 | and without printing remote debug information. */ |
| 392 | |
| 393 | int |
| 394 | monitor_readchar (void) |
| 395 | { |
| 396 | int c; |
| 397 | int looping; |
| 398 | |
| 399 | do |
| 400 | { |
| 401 | looping = 0; |
| 402 | c = serial_readchar (monitor_desc, timeout); |
| 403 | |
| 404 | if (c >= 0) |
| 405 | c &= 0xff; /* don't lose bit 7 */ |
| 406 | } |
| 407 | while (looping); |
| 408 | |
| 409 | if (c >= 0) |
| 410 | return c; |
| 411 | |
| 412 | if (c == SERIAL_TIMEOUT) |
| 413 | error (_("Timeout reading from remote system.")); |
| 414 | |
| 415 | perror_with_name (_("remote-monitor")); |
| 416 | } |
| 417 | |
| 418 | |
| 419 | /* Read a character from the remote system, doing all the fancy |
| 420 | timeout stuff. */ |
| 421 | |
| 422 | static int |
| 423 | readchar (int timeout) |
| 424 | { |
| 425 | int c; |
| 426 | static enum |
| 427 | { |
| 428 | last_random, last_nl, last_cr, last_crnl |
| 429 | } |
| 430 | state = last_random; |
| 431 | int looping; |
| 432 | |
| 433 | do |
| 434 | { |
| 435 | looping = 0; |
| 436 | c = serial_readchar (monitor_desc, timeout); |
| 437 | |
| 438 | if (c >= 0) |
| 439 | { |
| 440 | c &= 0x7f; |
| 441 | /* This seems to interfere with proper function of the |
| 442 | input stream. */ |
| 443 | if (monitor_debug_p || remote_debug) |
| 444 | { |
| 445 | char buf[2]; |
| 446 | |
| 447 | buf[0] = c; |
| 448 | buf[1] = '\0'; |
| 449 | puts_debug ("read -->", buf, "<--"); |
| 450 | } |
| 451 | |
| 452 | } |
| 453 | |
| 454 | /* Canonicialize \n\r combinations into one \r. */ |
| 455 | if ((current_monitor->flags & MO_HANDLE_NL) != 0) |
| 456 | { |
| 457 | if ((c == '\r' && state == last_nl) |
| 458 | || (c == '\n' && state == last_cr)) |
| 459 | { |
| 460 | state = last_crnl; |
| 461 | looping = 1; |
| 462 | } |
| 463 | else if (c == '\r') |
| 464 | state = last_cr; |
| 465 | else if (c != '\n') |
| 466 | state = last_random; |
| 467 | else |
| 468 | { |
| 469 | state = last_nl; |
| 470 | c = '\r'; |
| 471 | } |
| 472 | } |
| 473 | } |
| 474 | while (looping); |
| 475 | |
| 476 | if (c >= 0) |
| 477 | return c; |
| 478 | |
| 479 | if (c == SERIAL_TIMEOUT) |
| 480 | #if 0 |
| 481 | /* I fail to see how detaching here can be useful. */ |
| 482 | if (in_monitor_wait) /* Watchdog went off. */ |
| 483 | { |
| 484 | target_mourn_inferior (); |
| 485 | error (_("GDB serial timeout has expired. Target detached.")); |
| 486 | } |
| 487 | else |
| 488 | #endif |
| 489 | error (_("Timeout reading from remote system.")); |
| 490 | |
| 491 | perror_with_name (_("remote-monitor")); |
| 492 | } |
| 493 | |
| 494 | /* Scan input from the remote system, until STRING is found. If BUF is non- |
| 495 | zero, then collect input until we have collected either STRING or BUFLEN-1 |
| 496 | chars. In either case we terminate BUF with a 0. If input overflows BUF |
| 497 | because STRING can't be found, return -1, else return number of chars in BUF |
| 498 | (minus the terminating NUL). Note that in the non-overflow case, STRING |
| 499 | will be at the end of BUF. */ |
| 500 | |
| 501 | int |
| 502 | monitor_expect (char *string, char *buf, int buflen) |
| 503 | { |
| 504 | char *p = string; |
| 505 | int obuflen = buflen; |
| 506 | int c; |
| 507 | |
| 508 | if (monitor_debug_p) |
| 509 | { |
| 510 | char *safe_string = (char *) alloca ((strlen (string) * 4) + 1); |
| 511 | monitor_printable_string (safe_string, string, 0); |
| 512 | fprintf_unfiltered (gdb_stdlog, "MON Expecting '%s'\n", safe_string); |
| 513 | } |
| 514 | |
| 515 | immediate_quit++; |
| 516 | QUIT; |
| 517 | while (1) |
| 518 | { |
| 519 | if (buf) |
| 520 | { |
| 521 | if (buflen < 2) |
| 522 | { |
| 523 | *buf = '\000'; |
| 524 | immediate_quit--; |
| 525 | return -1; |
| 526 | } |
| 527 | |
| 528 | c = readchar (timeout); |
| 529 | if (c == '\000') |
| 530 | continue; |
| 531 | *buf++ = c; |
| 532 | buflen--; |
| 533 | } |
| 534 | else |
| 535 | c = readchar (timeout); |
| 536 | |
| 537 | /* Don't expect any ^C sent to be echoed. */ |
| 538 | |
| 539 | if (*p == '\003' || c == *p) |
| 540 | { |
| 541 | p++; |
| 542 | if (*p == '\0') |
| 543 | { |
| 544 | immediate_quit--; |
| 545 | |
| 546 | if (buf) |
| 547 | { |
| 548 | *buf++ = '\000'; |
| 549 | return obuflen - buflen; |
| 550 | } |
| 551 | else |
| 552 | return 0; |
| 553 | } |
| 554 | } |
| 555 | else |
| 556 | { |
| 557 | /* We got a character that doesn't match the string. We need to |
| 558 | back up p, but how far? If we're looking for "..howdy" and the |
| 559 | monitor sends "...howdy"? There's certainly a match in there, |
| 560 | but when we receive the third ".", we won't find it if we just |
| 561 | restart the matching at the beginning of the string. |
| 562 | |
| 563 | This is a Boyer-Moore kind of situation. We want to reset P to |
| 564 | the end of the longest prefix of STRING that is a suffix of |
| 565 | what we've read so far. In the example above, that would be |
| 566 | ".." --- the longest prefix of "..howdy" that is a suffix of |
| 567 | "...". This longest prefix could be the empty string, if C |
| 568 | is nowhere to be found in STRING. |
| 569 | |
| 570 | If this longest prefix is not the empty string, it must contain |
| 571 | C, so let's search from the end of STRING for instances of C, |
| 572 | and see if the portion of STRING before that is a suffix of |
| 573 | what we read before C. Actually, we can search backwards from |
| 574 | p, since we know no prefix can be longer than that. |
| 575 | |
| 576 | Note that we can use STRING itself, along with C, as a record |
| 577 | of what we've received so far. :) */ |
| 578 | int i; |
| 579 | |
| 580 | for (i = (p - string) - 1; i >= 0; i--) |
| 581 | if (string[i] == c) |
| 582 | { |
| 583 | /* Is this prefix a suffix of what we've read so far? |
| 584 | In other words, does |
| 585 | string[0 .. i-1] == string[p - i, p - 1]? */ |
| 586 | if (! memcmp (string, p - i, i)) |
| 587 | { |
| 588 | p = string + i + 1; |
| 589 | break; |
| 590 | } |
| 591 | } |
| 592 | if (i < 0) |
| 593 | p = string; |
| 594 | } |
| 595 | } |
| 596 | } |
| 597 | |
| 598 | /* Search for a regexp. */ |
| 599 | |
| 600 | static int |
| 601 | monitor_expect_regexp (struct re_pattern_buffer *pat, char *buf, int buflen) |
| 602 | { |
| 603 | char *mybuf; |
| 604 | char *p; |
| 605 | |
| 606 | monitor_debug ("MON Expecting regexp\n"); |
| 607 | if (buf) |
| 608 | mybuf = buf; |
| 609 | else |
| 610 | { |
| 611 | mybuf = alloca (TARGET_BUF_SIZE); |
| 612 | buflen = TARGET_BUF_SIZE; |
| 613 | } |
| 614 | |
| 615 | p = mybuf; |
| 616 | while (1) |
| 617 | { |
| 618 | int retval; |
| 619 | |
| 620 | if (p - mybuf >= buflen) |
| 621 | { /* Buffer about to overflow. */ |
| 622 | |
| 623 | /* On overflow, we copy the upper half of the buffer to the lower half. Not |
| 624 | great, but it usually works... */ |
| 625 | |
| 626 | memcpy (mybuf, mybuf + buflen / 2, buflen / 2); |
| 627 | p = mybuf + buflen / 2; |
| 628 | } |
| 629 | |
| 630 | *p++ = readchar (timeout); |
| 631 | |
| 632 | retval = re_search (pat, mybuf, p - mybuf, 0, p - mybuf, NULL); |
| 633 | if (retval >= 0) |
| 634 | return 1; |
| 635 | } |
| 636 | } |
| 637 | |
| 638 | /* Keep discarding input until we see the MONITOR prompt. |
| 639 | |
| 640 | The convention for dealing with the prompt is that you |
| 641 | o give your command |
| 642 | o *then* wait for the prompt. |
| 643 | |
| 644 | Thus the last thing that a procedure does with the serial line will |
| 645 | be an monitor_expect_prompt(). Exception: monitor_resume does not |
| 646 | wait for the prompt, because the terminal is being handed over to |
| 647 | the inferior. However, the next thing which happens after that is |
| 648 | a monitor_wait which does wait for the prompt. Note that this |
| 649 | includes abnormal exit, e.g. error(). This is necessary to prevent |
| 650 | getting into states from which we can't recover. */ |
| 651 | |
| 652 | int |
| 653 | monitor_expect_prompt (char *buf, int buflen) |
| 654 | { |
| 655 | monitor_debug ("MON Expecting prompt\n"); |
| 656 | return monitor_expect (current_monitor->prompt, buf, buflen); |
| 657 | } |
| 658 | |
| 659 | /* Get N 32-bit words from remote, each preceded by a space, and put |
| 660 | them in registers starting at REGNO. */ |
| 661 | |
| 662 | #if 0 |
| 663 | static unsigned long |
| 664 | get_hex_word (void) |
| 665 | { |
| 666 | unsigned long val; |
| 667 | int i; |
| 668 | int ch; |
| 669 | |
| 670 | do |
| 671 | ch = readchar (timeout); |
| 672 | while (isspace (ch)); |
| 673 | |
| 674 | val = from_hex (ch); |
| 675 | |
| 676 | for (i = 7; i >= 1; i--) |
| 677 | { |
| 678 | ch = readchar (timeout); |
| 679 | if (!isxdigit (ch)) |
| 680 | break; |
| 681 | val = (val << 4) | from_hex (ch); |
| 682 | } |
| 683 | |
| 684 | return val; |
| 685 | } |
| 686 | #endif |
| 687 | |
| 688 | static void |
| 689 | compile_pattern (char *pattern, struct re_pattern_buffer *compiled_pattern, |
| 690 | char *fastmap) |
| 691 | { |
| 692 | int tmp; |
| 693 | const char *val; |
| 694 | |
| 695 | compiled_pattern->fastmap = fastmap; |
| 696 | |
| 697 | tmp = re_set_syntax (RE_SYNTAX_EMACS); |
| 698 | val = re_compile_pattern (pattern, |
| 699 | strlen (pattern), |
| 700 | compiled_pattern); |
| 701 | re_set_syntax (tmp); |
| 702 | |
| 703 | if (val) |
| 704 | error (_("compile_pattern: Can't compile pattern string `%s': %s!"), |
| 705 | pattern, val); |
| 706 | |
| 707 | if (fastmap) |
| 708 | re_compile_fastmap (compiled_pattern); |
| 709 | } |
| 710 | |
| 711 | /* Open a connection to a remote debugger. NAME is the filename used |
| 712 | for communication. */ |
| 713 | |
| 714 | void |
| 715 | monitor_open (char *args, struct monitor_ops *mon_ops, int from_tty) |
| 716 | { |
| 717 | char *name; |
| 718 | char **p; |
| 719 | struct inferior *inf; |
| 720 | |
| 721 | if (mon_ops->magic != MONITOR_OPS_MAGIC) |
| 722 | error (_("Magic number of monitor_ops struct wrong.")); |
| 723 | |
| 724 | targ_ops = mon_ops->target; |
| 725 | name = targ_ops->to_shortname; |
| 726 | |
| 727 | if (!args) |
| 728 | error (_("Use `target %s DEVICE-NAME' to use a serial port, or\n\ |
| 729 | `target %s HOST-NAME:PORT-NUMBER' to use a network connection."), name, name); |
| 730 | |
| 731 | target_preopen (from_tty); |
| 732 | |
| 733 | /* Setup pattern for register dump. */ |
| 734 | |
| 735 | if (mon_ops->register_pattern) |
| 736 | compile_pattern (mon_ops->register_pattern, ®ister_pattern, |
| 737 | register_fastmap); |
| 738 | |
| 739 | if (mon_ops->getmem.resp_delim) |
| 740 | compile_pattern (mon_ops->getmem.resp_delim, &getmem_resp_delim_pattern, |
| 741 | getmem_resp_delim_fastmap); |
| 742 | |
| 743 | if (mon_ops->setmem.resp_delim) |
| 744 | compile_pattern (mon_ops->setmem.resp_delim, &setmem_resp_delim_pattern, |
| 745 | setmem_resp_delim_fastmap); |
| 746 | |
| 747 | if (mon_ops->setreg.resp_delim) |
| 748 | compile_pattern (mon_ops->setreg.resp_delim, &setreg_resp_delim_pattern, |
| 749 | setreg_resp_delim_fastmap); |
| 750 | |
| 751 | unpush_target (targ_ops); |
| 752 | |
| 753 | if (dev_name) |
| 754 | xfree (dev_name); |
| 755 | dev_name = xstrdup (args); |
| 756 | |
| 757 | monitor_desc = serial_open (dev_name); |
| 758 | |
| 759 | if (!monitor_desc) |
| 760 | perror_with_name (dev_name); |
| 761 | |
| 762 | if (baud_rate != -1) |
| 763 | { |
| 764 | if (serial_setbaudrate (monitor_desc, baud_rate)) |
| 765 | { |
| 766 | serial_close (monitor_desc); |
| 767 | perror_with_name (dev_name); |
| 768 | } |
| 769 | } |
| 770 | |
| 771 | serial_raw (monitor_desc); |
| 772 | |
| 773 | serial_flush_input (monitor_desc); |
| 774 | |
| 775 | /* some systems only work with 2 stop bits. */ |
| 776 | |
| 777 | serial_setstopbits (monitor_desc, mon_ops->stopbits); |
| 778 | |
| 779 | current_monitor = mon_ops; |
| 780 | |
| 781 | /* See if we can wake up the monitor. First, try sending a stop sequence, |
| 782 | then send the init strings. Last, remove all breakpoints. */ |
| 783 | |
| 784 | if (current_monitor->stop) |
| 785 | { |
| 786 | monitor_stop (inferior_ptid); |
| 787 | if ((current_monitor->flags & MO_NO_ECHO_ON_OPEN) == 0) |
| 788 | { |
| 789 | monitor_debug ("EXP Open echo\n"); |
| 790 | monitor_expect_prompt (NULL, 0); |
| 791 | } |
| 792 | } |
| 793 | |
| 794 | /* wake up the monitor and see if it's alive. */ |
| 795 | for (p = mon_ops->init; *p != NULL; p++) |
| 796 | { |
| 797 | /* Some of the characters we send may not be echoed, |
| 798 | but we hope to get a prompt at the end of it all. */ |
| 799 | |
| 800 | if ((current_monitor->flags & MO_NO_ECHO_ON_OPEN) == 0) |
| 801 | monitor_printf (*p); |
| 802 | else |
| 803 | monitor_printf_noecho (*p); |
| 804 | monitor_expect_prompt (NULL, 0); |
| 805 | } |
| 806 | |
| 807 | serial_flush_input (monitor_desc); |
| 808 | |
| 809 | /* Alloc breakpoints */ |
| 810 | if (mon_ops->set_break != NULL) |
| 811 | { |
| 812 | if (mon_ops->num_breakpoints == 0) |
| 813 | mon_ops->num_breakpoints = 8; |
| 814 | |
| 815 | breakaddr = (CORE_ADDR *) |
| 816 | xmalloc (mon_ops->num_breakpoints * sizeof (CORE_ADDR)); |
| 817 | memset (breakaddr, 0, mon_ops->num_breakpoints * sizeof (CORE_ADDR)); |
| 818 | } |
| 819 | |
| 820 | /* Remove all breakpoints. */ |
| 821 | |
| 822 | if (mon_ops->clr_all_break) |
| 823 | { |
| 824 | monitor_printf (mon_ops->clr_all_break); |
| 825 | monitor_expect_prompt (NULL, 0); |
| 826 | } |
| 827 | |
| 828 | if (from_tty) |
| 829 | printf_unfiltered (_("Remote target %s connected to %s\n"), |
| 830 | name, dev_name); |
| 831 | |
| 832 | push_target (targ_ops); |
| 833 | |
| 834 | /* Start afresh. */ |
| 835 | init_thread_list (); |
| 836 | |
| 837 | /* Make run command think we are busy... */ |
| 838 | inferior_ptid = monitor_ptid; |
| 839 | inf = current_inferior (); |
| 840 | inferior_appeared (inf, ptid_get_pid (inferior_ptid)); |
| 841 | add_thread_silent (inferior_ptid); |
| 842 | |
| 843 | /* Give monitor_wait something to read. */ |
| 844 | |
| 845 | monitor_printf (current_monitor->line_term); |
| 846 | |
| 847 | init_wait_for_inferior (); |
| 848 | |
| 849 | start_remote (from_tty); |
| 850 | } |
| 851 | |
| 852 | /* Close out all files and local state before this target loses |
| 853 | control. */ |
| 854 | |
| 855 | void |
| 856 | monitor_close (void) |
| 857 | { |
| 858 | if (monitor_desc) |
| 859 | serial_close (monitor_desc); |
| 860 | |
| 861 | /* Free breakpoint memory. */ |
| 862 | if (breakaddr != NULL) |
| 863 | { |
| 864 | xfree (breakaddr); |
| 865 | breakaddr = NULL; |
| 866 | } |
| 867 | |
| 868 | monitor_desc = NULL; |
| 869 | |
| 870 | delete_thread_silent (monitor_ptid); |
| 871 | delete_inferior_silent (ptid_get_pid (monitor_ptid)); |
| 872 | } |
| 873 | |
| 874 | /* Terminate the open connection to the remote debugger. Use this |
| 875 | when you want to detach and do something else with your gdb. */ |
| 876 | |
| 877 | static void |
| 878 | monitor_detach (struct target_ops *ops, const char *args, int from_tty) |
| 879 | { |
| 880 | unpush_target (ops); /* calls monitor_close to do the real work. */ |
| 881 | if (from_tty) |
| 882 | printf_unfiltered (_("Ending remote %s debugging\n"), target_shortname); |
| 883 | } |
| 884 | |
| 885 | /* Convert VALSTR into the target byte-ordered value of REGNO and store it. */ |
| 886 | |
| 887 | char * |
| 888 | monitor_supply_register (struct regcache *regcache, int regno, char *valstr) |
| 889 | { |
| 890 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
| 891 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
| 892 | ULONGEST val; |
| 893 | unsigned char regbuf[MAX_REGISTER_SIZE]; |
| 894 | char *p; |
| 895 | |
| 896 | val = 0; |
| 897 | p = valstr; |
| 898 | while (p && *p != '\0') |
| 899 | { |
| 900 | if (*p == '\r' || *p == '\n') |
| 901 | { |
| 902 | while (*p != '\0') |
| 903 | p++; |
| 904 | break; |
| 905 | } |
| 906 | if (isspace (*p)) |
| 907 | { |
| 908 | p++; |
| 909 | continue; |
| 910 | } |
| 911 | if (!isxdigit (*p) && *p != 'x') |
| 912 | { |
| 913 | break; |
| 914 | } |
| 915 | |
| 916 | val <<= 4; |
| 917 | val += fromhex (*p++); |
| 918 | } |
| 919 | monitor_debug ("Supplying Register %d %s\n", regno, valstr); |
| 920 | |
| 921 | if (val == 0 && valstr == p) |
| 922 | error (_("monitor_supply_register (%d): bad value from monitor: %s."), |
| 923 | regno, valstr); |
| 924 | |
| 925 | /* supply register stores in target byte order, so swap here. */ |
| 926 | |
| 927 | store_unsigned_integer (regbuf, register_size (gdbarch, regno), byte_order, |
| 928 | val); |
| 929 | |
| 930 | regcache_raw_supply (regcache, regno, regbuf); |
| 931 | |
| 932 | return p; |
| 933 | } |
| 934 | |
| 935 | /* Tell the remote machine to resume. */ |
| 936 | |
| 937 | static void |
| 938 | monitor_resume (struct target_ops *ops, |
| 939 | ptid_t ptid, int step, enum gdb_signal sig) |
| 940 | { |
| 941 | /* Some monitors require a different command when starting a program. */ |
| 942 | monitor_debug ("MON resume\n"); |
| 943 | if (current_monitor->flags & MO_RUN_FIRST_TIME && first_time == 1) |
| 944 | { |
| 945 | first_time = 0; |
| 946 | monitor_printf ("run\r"); |
| 947 | if (current_monitor->flags & MO_NEED_REGDUMP_AFTER_CONT) |
| 948 | dump_reg_flag = 1; |
| 949 | return; |
| 950 | } |
| 951 | if (step) |
| 952 | monitor_printf (current_monitor->step); |
| 953 | else |
| 954 | { |
| 955 | if (current_monitor->continue_hook) |
| 956 | (*current_monitor->continue_hook) (); |
| 957 | else |
| 958 | monitor_printf (current_monitor->cont); |
| 959 | if (current_monitor->flags & MO_NEED_REGDUMP_AFTER_CONT) |
| 960 | dump_reg_flag = 1; |
| 961 | } |
| 962 | } |
| 963 | |
| 964 | /* Parse the output of a register dump command. A monitor specific |
| 965 | regexp is used to extract individual register descriptions of the |
| 966 | form REG=VAL. Each description is split up into a name and a value |
| 967 | string which are passed down to monitor specific code. */ |
| 968 | |
| 969 | static void |
| 970 | parse_register_dump (struct regcache *regcache, char *buf, int len) |
| 971 | { |
| 972 | monitor_debug ("MON Parsing register dump\n"); |
| 973 | while (1) |
| 974 | { |
| 975 | int regnamelen, vallen; |
| 976 | char *regname, *val; |
| 977 | |
| 978 | /* Element 0 points to start of register name, and element 1 |
| 979 | points to the start of the register value. */ |
| 980 | struct re_registers register_strings; |
| 981 | |
| 982 | memset (®ister_strings, 0, sizeof (struct re_registers)); |
| 983 | |
| 984 | if (re_search (®ister_pattern, buf, len, 0, len, |
| 985 | ®ister_strings) == -1) |
| 986 | break; |
| 987 | |
| 988 | regnamelen = register_strings.end[1] - register_strings.start[1]; |
| 989 | regname = buf + register_strings.start[1]; |
| 990 | vallen = register_strings.end[2] - register_strings.start[2]; |
| 991 | val = buf + register_strings.start[2]; |
| 992 | |
| 993 | current_monitor->supply_register (regcache, regname, regnamelen, |
| 994 | val, vallen); |
| 995 | |
| 996 | buf += register_strings.end[0]; |
| 997 | len -= register_strings.end[0]; |
| 998 | } |
| 999 | } |
| 1000 | |
| 1001 | /* Send ^C to target to halt it. Target will respond, and send us a |
| 1002 | packet. */ |
| 1003 | |
| 1004 | static void |
| 1005 | monitor_interrupt (int signo) |
| 1006 | { |
| 1007 | /* If this doesn't work, try more severe steps. */ |
| 1008 | signal (signo, monitor_interrupt_twice); |
| 1009 | |
| 1010 | if (monitor_debug_p || remote_debug) |
| 1011 | fprintf_unfiltered (gdb_stdlog, "monitor_interrupt called\n"); |
| 1012 | |
| 1013 | target_stop (inferior_ptid); |
| 1014 | } |
| 1015 | |
| 1016 | /* The user typed ^C twice. */ |
| 1017 | |
| 1018 | static void |
| 1019 | monitor_interrupt_twice (int signo) |
| 1020 | { |
| 1021 | signal (signo, ofunc); |
| 1022 | |
| 1023 | monitor_interrupt_query (); |
| 1024 | |
| 1025 | signal (signo, monitor_interrupt); |
| 1026 | } |
| 1027 | |
| 1028 | /* Ask the user what to do when an interrupt is received. */ |
| 1029 | |
| 1030 | static void |
| 1031 | monitor_interrupt_query (void) |
| 1032 | { |
| 1033 | target_terminal_ours (); |
| 1034 | |
| 1035 | if (query (_("Interrupted while waiting for the program.\n\ |
| 1036 | Give up (and stop debugging it)? "))) |
| 1037 | { |
| 1038 | target_mourn_inferior (); |
| 1039 | quit (); |
| 1040 | } |
| 1041 | |
| 1042 | target_terminal_inferior (); |
| 1043 | } |
| 1044 | |
| 1045 | static void |
| 1046 | monitor_wait_cleanup (void *old_timeout) |
| 1047 | { |
| 1048 | timeout = *(int *) old_timeout; |
| 1049 | signal (SIGINT, ofunc); |
| 1050 | in_monitor_wait = 0; |
| 1051 | } |
| 1052 | |
| 1053 | |
| 1054 | |
| 1055 | static void |
| 1056 | monitor_wait_filter (char *buf, |
| 1057 | int bufmax, |
| 1058 | int *ext_resp_len, |
| 1059 | struct target_waitstatus *status) |
| 1060 | { |
| 1061 | int resp_len; |
| 1062 | |
| 1063 | do |
| 1064 | { |
| 1065 | resp_len = monitor_expect_prompt (buf, bufmax); |
| 1066 | *ext_resp_len = resp_len; |
| 1067 | |
| 1068 | if (resp_len <= 0) |
| 1069 | fprintf_unfiltered (gdb_stderr, |
| 1070 | "monitor_wait: excessive " |
| 1071 | "response from monitor: %s.", buf); |
| 1072 | } |
| 1073 | while (resp_len < 0); |
| 1074 | |
| 1075 | /* Print any output characters that were preceded by ^O. */ |
| 1076 | /* FIXME - This would be great as a user settabgle flag. */ |
| 1077 | if (monitor_debug_p || remote_debug |
| 1078 | || current_monitor->flags & MO_PRINT_PROGRAM_OUTPUT) |
| 1079 | { |
| 1080 | int i; |
| 1081 | |
| 1082 | for (i = 0; i < resp_len - 1; i++) |
| 1083 | if (buf[i] == 0x0f) |
| 1084 | putchar_unfiltered (buf[++i]); |
| 1085 | } |
| 1086 | } |
| 1087 | |
| 1088 | |
| 1089 | |
| 1090 | /* Wait until the remote machine stops, then return, storing status in |
| 1091 | status just as `wait' would. */ |
| 1092 | |
| 1093 | static ptid_t |
| 1094 | monitor_wait (struct target_ops *ops, |
| 1095 | ptid_t ptid, struct target_waitstatus *status, int options) |
| 1096 | { |
| 1097 | int old_timeout = timeout; |
| 1098 | char buf[TARGET_BUF_SIZE]; |
| 1099 | int resp_len; |
| 1100 | struct cleanup *old_chain; |
| 1101 | |
| 1102 | status->kind = TARGET_WAITKIND_EXITED; |
| 1103 | status->value.integer = 0; |
| 1104 | |
| 1105 | old_chain = make_cleanup (monitor_wait_cleanup, &old_timeout); |
| 1106 | monitor_debug ("MON wait\n"); |
| 1107 | |
| 1108 | #if 0 |
| 1109 | /* This is somthing other than a maintenance command. */ |
| 1110 | in_monitor_wait = 1; |
| 1111 | timeout = watchdog > 0 ? watchdog : -1; |
| 1112 | #else |
| 1113 | timeout = -1; /* Don't time out -- user program is running. */ |
| 1114 | #endif |
| 1115 | |
| 1116 | ofunc = (void (*)()) signal (SIGINT, monitor_interrupt); |
| 1117 | |
| 1118 | if (current_monitor->wait_filter) |
| 1119 | (*current_monitor->wait_filter) (buf, sizeof (buf), &resp_len, status); |
| 1120 | else |
| 1121 | monitor_wait_filter (buf, sizeof (buf), &resp_len, status); |
| 1122 | |
| 1123 | #if 0 /* Transferred to monitor wait filter. */ |
| 1124 | do |
| 1125 | { |
| 1126 | resp_len = monitor_expect_prompt (buf, sizeof (buf)); |
| 1127 | |
| 1128 | if (resp_len <= 0) |
| 1129 | fprintf_unfiltered (gdb_stderr, |
| 1130 | "monitor_wait: excessive " |
| 1131 | "response from monitor: %s.", buf); |
| 1132 | } |
| 1133 | while (resp_len < 0); |
| 1134 | |
| 1135 | /* Print any output characters that were preceded by ^O. */ |
| 1136 | /* FIXME - This would be great as a user settabgle flag. */ |
| 1137 | if (monitor_debug_p || remote_debug |
| 1138 | || current_monitor->flags & MO_PRINT_PROGRAM_OUTPUT) |
| 1139 | { |
| 1140 | int i; |
| 1141 | |
| 1142 | for (i = 0; i < resp_len - 1; i++) |
| 1143 | if (buf[i] == 0x0f) |
| 1144 | putchar_unfiltered (buf[++i]); |
| 1145 | } |
| 1146 | #endif |
| 1147 | |
| 1148 | signal (SIGINT, ofunc); |
| 1149 | |
| 1150 | timeout = old_timeout; |
| 1151 | #if 0 |
| 1152 | if (dump_reg_flag && current_monitor->dump_registers) |
| 1153 | { |
| 1154 | dump_reg_flag = 0; |
| 1155 | monitor_printf (current_monitor->dump_registers); |
| 1156 | resp_len = monitor_expect_prompt (buf, sizeof (buf)); |
| 1157 | } |
| 1158 | |
| 1159 | if (current_monitor->register_pattern) |
| 1160 | parse_register_dump (get_current_regcache (), buf, resp_len); |
| 1161 | #else |
| 1162 | monitor_debug ("Wait fetching registers after stop\n"); |
| 1163 | monitor_dump_regs (get_current_regcache ()); |
| 1164 | #endif |
| 1165 | |
| 1166 | status->kind = TARGET_WAITKIND_STOPPED; |
| 1167 | status->value.sig = GDB_SIGNAL_TRAP; |
| 1168 | |
| 1169 | discard_cleanups (old_chain); |
| 1170 | |
| 1171 | in_monitor_wait = 0; |
| 1172 | |
| 1173 | return inferior_ptid; |
| 1174 | } |
| 1175 | |
| 1176 | /* Fetch register REGNO, or all registers if REGNO is -1. Returns |
| 1177 | errno value. */ |
| 1178 | |
| 1179 | static void |
| 1180 | monitor_fetch_register (struct regcache *regcache, int regno) |
| 1181 | { |
| 1182 | const char *name; |
| 1183 | char *zerobuf; |
| 1184 | char *regbuf; |
| 1185 | int i; |
| 1186 | |
| 1187 | regbuf = alloca (MAX_REGISTER_SIZE * 2 + 1); |
| 1188 | zerobuf = alloca (MAX_REGISTER_SIZE); |
| 1189 | memset (zerobuf, 0, MAX_REGISTER_SIZE); |
| 1190 | |
| 1191 | if (current_monitor->regname != NULL) |
| 1192 | name = current_monitor->regname (regno); |
| 1193 | else |
| 1194 | name = current_monitor->regnames[regno]; |
| 1195 | monitor_debug ("MON fetchreg %d '%s'\n", regno, name ? name : "(null name)"); |
| 1196 | |
| 1197 | if (!name || (*name == '\0')) |
| 1198 | { |
| 1199 | monitor_debug ("No register known for %d\n", regno); |
| 1200 | regcache_raw_supply (regcache, regno, zerobuf); |
| 1201 | return; |
| 1202 | } |
| 1203 | |
| 1204 | /* Send the register examine command. */ |
| 1205 | |
| 1206 | monitor_printf (current_monitor->getreg.cmd, name); |
| 1207 | |
| 1208 | /* If RESP_DELIM is specified, we search for that as a leading |
| 1209 | delimiter for the register value. Otherwise, we just start |
| 1210 | searching from the start of the buf. */ |
| 1211 | |
| 1212 | if (current_monitor->getreg.resp_delim) |
| 1213 | { |
| 1214 | monitor_debug ("EXP getreg.resp_delim\n"); |
| 1215 | monitor_expect (current_monitor->getreg.resp_delim, NULL, 0); |
| 1216 | /* Handle case of first 32 registers listed in pairs. */ |
| 1217 | if (current_monitor->flags & MO_32_REGS_PAIRED |
| 1218 | && (regno & 1) != 0 && regno < 32) |
| 1219 | { |
| 1220 | monitor_debug ("EXP getreg.resp_delim\n"); |
| 1221 | monitor_expect (current_monitor->getreg.resp_delim, NULL, 0); |
| 1222 | } |
| 1223 | } |
| 1224 | |
| 1225 | /* Skip leading spaces and "0x" if MO_HEX_PREFIX flag is set. */ |
| 1226 | if (current_monitor->flags & MO_HEX_PREFIX) |
| 1227 | { |
| 1228 | int c; |
| 1229 | |
| 1230 | c = readchar (timeout); |
| 1231 | while (c == ' ') |
| 1232 | c = readchar (timeout); |
| 1233 | if ((c == '0') && ((c = readchar (timeout)) == 'x')) |
| 1234 | ; |
| 1235 | else |
| 1236 | error (_("Bad value returned from monitor " |
| 1237 | "while fetching register %x."), |
| 1238 | regno); |
| 1239 | } |
| 1240 | |
| 1241 | /* Read upto the maximum number of hex digits for this register, skipping |
| 1242 | spaces, but stop reading if something else is seen. Some monitors |
| 1243 | like to drop leading zeros. */ |
| 1244 | |
| 1245 | for (i = 0; i < register_size (get_regcache_arch (regcache), regno) * 2; i++) |
| 1246 | { |
| 1247 | int c; |
| 1248 | |
| 1249 | c = readchar (timeout); |
| 1250 | while (c == ' ') |
| 1251 | c = readchar (timeout); |
| 1252 | |
| 1253 | if (!isxdigit (c)) |
| 1254 | break; |
| 1255 | |
| 1256 | regbuf[i] = c; |
| 1257 | } |
| 1258 | |
| 1259 | regbuf[i] = '\000'; /* Terminate the number. */ |
| 1260 | monitor_debug ("REGVAL '%s'\n", regbuf); |
| 1261 | |
| 1262 | /* If TERM is present, we wait for that to show up. Also, (if TERM |
| 1263 | is present), we will send TERM_CMD if that is present. In any |
| 1264 | case, we collect all of the output into buf, and then wait for |
| 1265 | the normal prompt. */ |
| 1266 | |
| 1267 | if (current_monitor->getreg.term) |
| 1268 | { |
| 1269 | monitor_debug ("EXP getreg.term\n"); |
| 1270 | monitor_expect (current_monitor->getreg.term, NULL, 0); /* Get |
| 1271 | response. */ |
| 1272 | } |
| 1273 | |
| 1274 | if (current_monitor->getreg.term_cmd) |
| 1275 | { |
| 1276 | monitor_debug ("EMIT getreg.term.cmd\n"); |
| 1277 | monitor_printf (current_monitor->getreg.term_cmd); |
| 1278 | } |
| 1279 | if (!current_monitor->getreg.term || /* Already expected or */ |
| 1280 | current_monitor->getreg.term_cmd) /* ack expected. */ |
| 1281 | monitor_expect_prompt (NULL, 0); /* Get response. */ |
| 1282 | |
| 1283 | monitor_supply_register (regcache, regno, regbuf); |
| 1284 | } |
| 1285 | |
| 1286 | /* Sometimes, it takes several commands to dump the registers. */ |
| 1287 | /* This is a primitive for use by variations of monitor interfaces in |
| 1288 | case they need to compose the operation. */ |
| 1289 | |
| 1290 | int |
| 1291 | monitor_dump_reg_block (struct regcache *regcache, char *block_cmd) |
| 1292 | { |
| 1293 | char buf[TARGET_BUF_SIZE]; |
| 1294 | int resp_len; |
| 1295 | |
| 1296 | monitor_printf (block_cmd); |
| 1297 | resp_len = monitor_expect_prompt (buf, sizeof (buf)); |
| 1298 | parse_register_dump (regcache, buf, resp_len); |
| 1299 | return 1; |
| 1300 | } |
| 1301 | |
| 1302 | |
| 1303 | /* Read the remote registers into the block regs. */ |
| 1304 | /* Call the specific function if it has been provided. */ |
| 1305 | |
| 1306 | static void |
| 1307 | monitor_dump_regs (struct regcache *regcache) |
| 1308 | { |
| 1309 | char buf[TARGET_BUF_SIZE]; |
| 1310 | int resp_len; |
| 1311 | |
| 1312 | if (current_monitor->dumpregs) |
| 1313 | (*(current_monitor->dumpregs)) (regcache); /* Call supplied function. */ |
| 1314 | else if (current_monitor->dump_registers) /* Default version. */ |
| 1315 | { |
| 1316 | monitor_printf (current_monitor->dump_registers); |
| 1317 | resp_len = monitor_expect_prompt (buf, sizeof (buf)); |
| 1318 | parse_register_dump (regcache, buf, resp_len); |
| 1319 | } |
| 1320 | else |
| 1321 | /* Need some way to read registers. */ |
| 1322 | internal_error (__FILE__, __LINE__, |
| 1323 | _("failed internal consistency check")); |
| 1324 | } |
| 1325 | |
| 1326 | static void |
| 1327 | monitor_fetch_registers (struct target_ops *ops, |
| 1328 | struct regcache *regcache, int regno) |
| 1329 | { |
| 1330 | monitor_debug ("MON fetchregs\n"); |
| 1331 | if (current_monitor->getreg.cmd) |
| 1332 | { |
| 1333 | if (regno >= 0) |
| 1334 | { |
| 1335 | monitor_fetch_register (regcache, regno); |
| 1336 | return; |
| 1337 | } |
| 1338 | |
| 1339 | for (regno = 0; regno < gdbarch_num_regs (get_regcache_arch (regcache)); |
| 1340 | regno++) |
| 1341 | monitor_fetch_register (regcache, regno); |
| 1342 | } |
| 1343 | else |
| 1344 | { |
| 1345 | monitor_dump_regs (regcache); |
| 1346 | } |
| 1347 | } |
| 1348 | |
| 1349 | /* Store register REGNO, or all if REGNO == 0. Return errno value. */ |
| 1350 | |
| 1351 | static void |
| 1352 | monitor_store_register (struct regcache *regcache, int regno) |
| 1353 | { |
| 1354 | int reg_size = register_size (get_regcache_arch (regcache), regno); |
| 1355 | const char *name; |
| 1356 | ULONGEST val; |
| 1357 | |
| 1358 | if (current_monitor->regname != NULL) |
| 1359 | name = current_monitor->regname (regno); |
| 1360 | else |
| 1361 | name = current_monitor->regnames[regno]; |
| 1362 | |
| 1363 | if (!name || (*name == '\0')) |
| 1364 | { |
| 1365 | monitor_debug ("MON Cannot store unknown register\n"); |
| 1366 | return; |
| 1367 | } |
| 1368 | |
| 1369 | regcache_cooked_read_unsigned (regcache, regno, &val); |
| 1370 | monitor_debug ("MON storeg %d %s\n", regno, phex (val, reg_size)); |
| 1371 | |
| 1372 | /* Send the register deposit command. */ |
| 1373 | |
| 1374 | if (current_monitor->flags & MO_REGISTER_VALUE_FIRST) |
| 1375 | monitor_printf (current_monitor->setreg.cmd, val, name); |
| 1376 | else if (current_monitor->flags & MO_SETREG_INTERACTIVE) |
| 1377 | monitor_printf (current_monitor->setreg.cmd, name); |
| 1378 | else |
| 1379 | monitor_printf (current_monitor->setreg.cmd, name, val); |
| 1380 | |
| 1381 | if (current_monitor->setreg.resp_delim) |
| 1382 | { |
| 1383 | monitor_debug ("EXP setreg.resp_delim\n"); |
| 1384 | monitor_expect_regexp (&setreg_resp_delim_pattern, NULL, 0); |
| 1385 | if (current_monitor->flags & MO_SETREG_INTERACTIVE) |
| 1386 | monitor_printf ("%s\r", phex_nz (val, reg_size)); |
| 1387 | } |
| 1388 | if (current_monitor->setreg.term) |
| 1389 | { |
| 1390 | monitor_debug ("EXP setreg.term\n"); |
| 1391 | monitor_expect (current_monitor->setreg.term, NULL, 0); |
| 1392 | if (current_monitor->flags & MO_SETREG_INTERACTIVE) |
| 1393 | monitor_printf ("%s\r", phex_nz (val, reg_size)); |
| 1394 | monitor_expect_prompt (NULL, 0); |
| 1395 | } |
| 1396 | else |
| 1397 | monitor_expect_prompt (NULL, 0); |
| 1398 | if (current_monitor->setreg.term_cmd) /* Mode exit required. */ |
| 1399 | { |
| 1400 | monitor_debug ("EXP setreg_termcmd\n"); |
| 1401 | monitor_printf ("%s", current_monitor->setreg.term_cmd); |
| 1402 | monitor_expect_prompt (NULL, 0); |
| 1403 | } |
| 1404 | } /* monitor_store_register */ |
| 1405 | |
| 1406 | /* Store the remote registers. */ |
| 1407 | |
| 1408 | static void |
| 1409 | monitor_store_registers (struct target_ops *ops, |
| 1410 | struct regcache *regcache, int regno) |
| 1411 | { |
| 1412 | if (regno >= 0) |
| 1413 | { |
| 1414 | monitor_store_register (regcache, regno); |
| 1415 | return; |
| 1416 | } |
| 1417 | |
| 1418 | for (regno = 0; regno < gdbarch_num_regs (get_regcache_arch (regcache)); |
| 1419 | regno++) |
| 1420 | monitor_store_register (regcache, regno); |
| 1421 | } |
| 1422 | |
| 1423 | /* Get ready to modify the registers array. On machines which store |
| 1424 | individual registers, this doesn't need to do anything. On machines |
| 1425 | which store all the registers in one fell swoop, this makes sure |
| 1426 | that registers contains all the registers from the program being |
| 1427 | debugged. */ |
| 1428 | |
| 1429 | static void |
| 1430 | monitor_prepare_to_store (struct regcache *regcache) |
| 1431 | { |
| 1432 | /* Do nothing, since we can store individual regs. */ |
| 1433 | } |
| 1434 | |
| 1435 | static void |
| 1436 | monitor_files_info (struct target_ops *ops) |
| 1437 | { |
| 1438 | printf_unfiltered (_("\tAttached to %s at %d baud.\n"), dev_name, baud_rate); |
| 1439 | } |
| 1440 | |
| 1441 | static int |
| 1442 | monitor_write_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, int len) |
| 1443 | { |
| 1444 | enum bfd_endian byte_order = gdbarch_byte_order (target_gdbarch ()); |
| 1445 | unsigned int val, hostval; |
| 1446 | char *cmd; |
| 1447 | int i; |
| 1448 | |
| 1449 | monitor_debug ("MON write %d %s\n", len, paddress (target_gdbarch (), memaddr)); |
| 1450 | |
| 1451 | if (current_monitor->flags & MO_ADDR_BITS_REMOVE) |
| 1452 | memaddr = gdbarch_addr_bits_remove (target_gdbarch (), memaddr); |
| 1453 | |
| 1454 | /* Use memory fill command for leading 0 bytes. */ |
| 1455 | |
| 1456 | if (current_monitor->fill) |
| 1457 | { |
| 1458 | for (i = 0; i < len; i++) |
| 1459 | if (myaddr[i] != 0) |
| 1460 | break; |
| 1461 | |
| 1462 | if (i > 4) /* More than 4 zeros is worth doing. */ |
| 1463 | { |
| 1464 | monitor_debug ("MON FILL %d\n", i); |
| 1465 | if (current_monitor->flags & MO_FILL_USES_ADDR) |
| 1466 | monitor_printf (current_monitor->fill, memaddr, |
| 1467 | (memaddr + i) - 1, 0); |
| 1468 | else |
| 1469 | monitor_printf (current_monitor->fill, memaddr, i, 0); |
| 1470 | |
| 1471 | monitor_expect_prompt (NULL, 0); |
| 1472 | |
| 1473 | return i; |
| 1474 | } |
| 1475 | } |
| 1476 | |
| 1477 | #if 0 |
| 1478 | /* Can't actually use long longs if VAL is an int (nice idea, though). */ |
| 1479 | if ((memaddr & 0x7) == 0 && len >= 8 && current_monitor->setmem.cmdll) |
| 1480 | { |
| 1481 | len = 8; |
| 1482 | cmd = current_monitor->setmem.cmdll; |
| 1483 | } |
| 1484 | else |
| 1485 | #endif |
| 1486 | if ((memaddr & 0x3) == 0 && len >= 4 && current_monitor->setmem.cmdl) |
| 1487 | { |
| 1488 | len = 4; |
| 1489 | cmd = current_monitor->setmem.cmdl; |
| 1490 | } |
| 1491 | else if ((memaddr & 0x1) == 0 && len >= 2 && current_monitor->setmem.cmdw) |
| 1492 | { |
| 1493 | len = 2; |
| 1494 | cmd = current_monitor->setmem.cmdw; |
| 1495 | } |
| 1496 | else |
| 1497 | { |
| 1498 | len = 1; |
| 1499 | cmd = current_monitor->setmem.cmdb; |
| 1500 | } |
| 1501 | |
| 1502 | val = extract_unsigned_integer (myaddr, len, byte_order); |
| 1503 | |
| 1504 | if (len == 4) |
| 1505 | { |
| 1506 | hostval = *(unsigned int *) myaddr; |
| 1507 | monitor_debug ("Hostval(%08x) val(%08x)\n", hostval, val); |
| 1508 | } |
| 1509 | |
| 1510 | |
| 1511 | if (current_monitor->flags & MO_NO_ECHO_ON_SETMEM) |
| 1512 | monitor_printf_noecho (cmd, memaddr, val); |
| 1513 | else if (current_monitor->flags & MO_SETMEM_INTERACTIVE) |
| 1514 | { |
| 1515 | monitor_printf_noecho (cmd, memaddr); |
| 1516 | |
| 1517 | if (current_monitor->setmem.resp_delim) |
| 1518 | { |
| 1519 | monitor_debug ("EXP setmem.resp_delim"); |
| 1520 | monitor_expect_regexp (&setmem_resp_delim_pattern, NULL, 0); |
| 1521 | monitor_printf ("%x\r", val); |
| 1522 | } |
| 1523 | if (current_monitor->setmem.term) |
| 1524 | { |
| 1525 | monitor_debug ("EXP setmem.term"); |
| 1526 | monitor_expect (current_monitor->setmem.term, NULL, 0); |
| 1527 | monitor_printf ("%x\r", val); |
| 1528 | } |
| 1529 | if (current_monitor->setmem.term_cmd) |
| 1530 | { /* Emit this to get out of the memory editing state. */ |
| 1531 | monitor_printf ("%s", current_monitor->setmem.term_cmd); |
| 1532 | /* Drop through to expecting a prompt. */ |
| 1533 | } |
| 1534 | } |
| 1535 | else |
| 1536 | monitor_printf (cmd, memaddr, val); |
| 1537 | |
| 1538 | monitor_expect_prompt (NULL, 0); |
| 1539 | |
| 1540 | return len; |
| 1541 | } |
| 1542 | |
| 1543 | |
| 1544 | static int |
| 1545 | monitor_write_memory_bytes (CORE_ADDR memaddr, const gdb_byte *myaddr, int len) |
| 1546 | { |
| 1547 | unsigned char val; |
| 1548 | int written = 0; |
| 1549 | |
| 1550 | if (len == 0) |
| 1551 | return 0; |
| 1552 | /* Enter the sub mode. */ |
| 1553 | monitor_printf (current_monitor->setmem.cmdb, memaddr); |
| 1554 | monitor_expect_prompt (NULL, 0); |
| 1555 | while (len) |
| 1556 | { |
| 1557 | val = *myaddr; |
| 1558 | monitor_printf ("%x\r", val); |
| 1559 | myaddr++; |
| 1560 | memaddr++; |
| 1561 | written++; |
| 1562 | /* If we wanted to, here we could validate the address. */ |
| 1563 | monitor_expect_prompt (NULL, 0); |
| 1564 | len--; |
| 1565 | } |
| 1566 | /* Now exit the sub mode. */ |
| 1567 | monitor_printf (current_monitor->getreg.term_cmd); |
| 1568 | monitor_expect_prompt (NULL, 0); |
| 1569 | return written; |
| 1570 | } |
| 1571 | |
| 1572 | |
| 1573 | static void |
| 1574 | longlongendswap (unsigned char *a) |
| 1575 | { |
| 1576 | int i, j; |
| 1577 | unsigned char x; |
| 1578 | |
| 1579 | i = 0; |
| 1580 | j = 7; |
| 1581 | while (i < 4) |
| 1582 | { |
| 1583 | x = *(a + i); |
| 1584 | *(a + i) = *(a + j); |
| 1585 | *(a + j) = x; |
| 1586 | i++, j--; |
| 1587 | } |
| 1588 | } |
| 1589 | /* Format 32 chars of long long value, advance the pointer. */ |
| 1590 | static char *hexlate = "0123456789abcdef"; |
| 1591 | static char * |
| 1592 | longlong_hexchars (unsigned long long value, |
| 1593 | char *outbuff) |
| 1594 | { |
| 1595 | if (value == 0) |
| 1596 | { |
| 1597 | *outbuff++ = '0'; |
| 1598 | return outbuff; |
| 1599 | } |
| 1600 | else |
| 1601 | { |
| 1602 | static unsigned char disbuf[8]; /* disassembly buffer */ |
| 1603 | unsigned char *scan, *limit; /* loop controls */ |
| 1604 | unsigned char c, nib; |
| 1605 | int leadzero = 1; |
| 1606 | |
| 1607 | scan = disbuf; |
| 1608 | limit = scan + 8; |
| 1609 | { |
| 1610 | unsigned long long *dp; |
| 1611 | |
| 1612 | dp = (unsigned long long *) scan; |
| 1613 | *dp = value; |
| 1614 | } |
| 1615 | longlongendswap (disbuf); /* FIXME: ONly on big endian hosts. */ |
| 1616 | while (scan < limit) |
| 1617 | { |
| 1618 | c = *scan++; /* A byte of our long long value. */ |
| 1619 | if (leadzero) |
| 1620 | { |
| 1621 | if (c == 0) |
| 1622 | continue; |
| 1623 | else |
| 1624 | leadzero = 0; /* Henceforth we print even zeroes. */ |
| 1625 | } |
| 1626 | nib = c >> 4; /* high nibble bits */ |
| 1627 | *outbuff++ = hexlate[nib]; |
| 1628 | nib = c & 0x0f; /* low nibble bits */ |
| 1629 | *outbuff++ = hexlate[nib]; |
| 1630 | } |
| 1631 | return outbuff; |
| 1632 | } |
| 1633 | } /* longlong_hexchars */ |
| 1634 | |
| 1635 | |
| 1636 | |
| 1637 | /* I am only going to call this when writing virtual byte streams. |
| 1638 | Which possably entails endian conversions. */ |
| 1639 | |
| 1640 | static int |
| 1641 | monitor_write_memory_longlongs (CORE_ADDR memaddr, const gdb_byte *myaddr, int len) |
| 1642 | { |
| 1643 | static char hexstage[20]; /* At least 16 digits required, plus null. */ |
| 1644 | char *endstring; |
| 1645 | long long *llptr; |
| 1646 | long long value; |
| 1647 | int written = 0; |
| 1648 | |
| 1649 | llptr = (long long *) myaddr; |
| 1650 | if (len == 0) |
| 1651 | return 0; |
| 1652 | monitor_printf (current_monitor->setmem.cmdll, memaddr); |
| 1653 | monitor_expect_prompt (NULL, 0); |
| 1654 | while (len >= 8) |
| 1655 | { |
| 1656 | value = *llptr; |
| 1657 | endstring = longlong_hexchars (*llptr, hexstage); |
| 1658 | *endstring = '\0'; /* NUll terminate for printf. */ |
| 1659 | monitor_printf ("%s\r", hexstage); |
| 1660 | llptr++; |
| 1661 | memaddr += 8; |
| 1662 | written += 8; |
| 1663 | /* If we wanted to, here we could validate the address. */ |
| 1664 | monitor_expect_prompt (NULL, 0); |
| 1665 | len -= 8; |
| 1666 | } |
| 1667 | /* Now exit the sub mode. */ |
| 1668 | monitor_printf (current_monitor->getreg.term_cmd); |
| 1669 | monitor_expect_prompt (NULL, 0); |
| 1670 | return written; |
| 1671 | } /* */ |
| 1672 | |
| 1673 | |
| 1674 | |
| 1675 | /* ----- MONITOR_WRITE_MEMORY_BLOCK ---------------------------- */ |
| 1676 | /* This is for the large blocks of memory which may occur in downloading. |
| 1677 | And for monitors which use interactive entry, |
| 1678 | And for monitors which do not have other downloading methods. |
| 1679 | Without this, we will end up calling monitor_write_memory many times |
| 1680 | and do the entry and exit of the sub mode many times |
| 1681 | This currently assumes... |
| 1682 | MO_SETMEM_INTERACTIVE |
| 1683 | ! MO_NO_ECHO_ON_SETMEM |
| 1684 | To use this, the you have to patch the monitor_cmds block with |
| 1685 | this function. Otherwise, its not tuned up for use by all |
| 1686 | monitor variations. */ |
| 1687 | |
| 1688 | static int |
| 1689 | monitor_write_memory_block (CORE_ADDR memaddr, const gdb_byte *myaddr, int len) |
| 1690 | { |
| 1691 | int written; |
| 1692 | |
| 1693 | written = 0; |
| 1694 | /* FIXME: This would be a good place to put the zero test. */ |
| 1695 | #if 1 |
| 1696 | if ((len > 8) && (((len & 0x07)) == 0) && current_monitor->setmem.cmdll) |
| 1697 | { |
| 1698 | return monitor_write_memory_longlongs (memaddr, myaddr, len); |
| 1699 | } |
| 1700 | #endif |
| 1701 | written = monitor_write_memory_bytes (memaddr, myaddr, len); |
| 1702 | return written; |
| 1703 | } |
| 1704 | |
| 1705 | /* This is an alternate form of monitor_read_memory which is used for monitors |
| 1706 | which can only read a single byte/word/etc. at a time. */ |
| 1707 | |
| 1708 | static int |
| 1709 | monitor_read_memory_single (CORE_ADDR memaddr, gdb_byte *myaddr, int len) |
| 1710 | { |
| 1711 | enum bfd_endian byte_order = gdbarch_byte_order (target_gdbarch ()); |
| 1712 | unsigned int val; |
| 1713 | char membuf[sizeof (int) * 2 + 1]; |
| 1714 | char *p; |
| 1715 | char *cmd; |
| 1716 | |
| 1717 | monitor_debug ("MON read single\n"); |
| 1718 | #if 0 |
| 1719 | /* Can't actually use long longs (nice idea, though). In fact, the |
| 1720 | call to strtoul below will fail if it tries to convert a value |
| 1721 | that's too big to fit in a long. */ |
| 1722 | if ((memaddr & 0x7) == 0 && len >= 8 && current_monitor->getmem.cmdll) |
| 1723 | { |
| 1724 | len = 8; |
| 1725 | cmd = current_monitor->getmem.cmdll; |
| 1726 | } |
| 1727 | else |
| 1728 | #endif |
| 1729 | if ((memaddr & 0x3) == 0 && len >= 4 && current_monitor->getmem.cmdl) |
| 1730 | { |
| 1731 | len = 4; |
| 1732 | cmd = current_monitor->getmem.cmdl; |
| 1733 | } |
| 1734 | else if ((memaddr & 0x1) == 0 && len >= 2 && current_monitor->getmem.cmdw) |
| 1735 | { |
| 1736 | len = 2; |
| 1737 | cmd = current_monitor->getmem.cmdw; |
| 1738 | } |
| 1739 | else |
| 1740 | { |
| 1741 | len = 1; |
| 1742 | cmd = current_monitor->getmem.cmdb; |
| 1743 | } |
| 1744 | |
| 1745 | /* Send the examine command. */ |
| 1746 | |
| 1747 | monitor_printf (cmd, memaddr); |
| 1748 | |
| 1749 | /* If RESP_DELIM is specified, we search for that as a leading |
| 1750 | delimiter for the memory value. Otherwise, we just start |
| 1751 | searching from the start of the buf. */ |
| 1752 | |
| 1753 | if (current_monitor->getmem.resp_delim) |
| 1754 | { |
| 1755 | monitor_debug ("EXP getmem.resp_delim\n"); |
| 1756 | monitor_expect_regexp (&getmem_resp_delim_pattern, NULL, 0); |
| 1757 | } |
| 1758 | |
| 1759 | /* Now, read the appropriate number of hex digits for this loc, |
| 1760 | skipping spaces. */ |
| 1761 | |
| 1762 | /* Skip leading spaces and "0x" if MO_HEX_PREFIX flag is set. */ |
| 1763 | if (current_monitor->flags & MO_HEX_PREFIX) |
| 1764 | { |
| 1765 | int c; |
| 1766 | |
| 1767 | c = readchar (timeout); |
| 1768 | while (c == ' ') |
| 1769 | c = readchar (timeout); |
| 1770 | if ((c == '0') && ((c = readchar (timeout)) == 'x')) |
| 1771 | ; |
| 1772 | else |
| 1773 | monitor_error ("monitor_read_memory_single", |
| 1774 | "bad response from monitor", |
| 1775 | memaddr, 0, NULL, 0); |
| 1776 | } |
| 1777 | |
| 1778 | { |
| 1779 | int i; |
| 1780 | |
| 1781 | for (i = 0; i < len * 2; i++) |
| 1782 | { |
| 1783 | int c; |
| 1784 | |
| 1785 | while (1) |
| 1786 | { |
| 1787 | c = readchar (timeout); |
| 1788 | if (isxdigit (c)) |
| 1789 | break; |
| 1790 | if (c == ' ') |
| 1791 | continue; |
| 1792 | |
| 1793 | monitor_error ("monitor_read_memory_single", |
| 1794 | "bad response from monitor", |
| 1795 | memaddr, i, membuf, 0); |
| 1796 | } |
| 1797 | membuf[i] = c; |
| 1798 | } |
| 1799 | membuf[i] = '\000'; /* Terminate the number. */ |
| 1800 | } |
| 1801 | |
| 1802 | /* If TERM is present, we wait for that to show up. Also, (if TERM is |
| 1803 | present), we will send TERM_CMD if that is present. In any case, we collect |
| 1804 | all of the output into buf, and then wait for the normal prompt. */ |
| 1805 | |
| 1806 | if (current_monitor->getmem.term) |
| 1807 | { |
| 1808 | monitor_expect (current_monitor->getmem.term, NULL, 0); /* Get |
| 1809 | response. */ |
| 1810 | |
| 1811 | if (current_monitor->getmem.term_cmd) |
| 1812 | { |
| 1813 | monitor_printf (current_monitor->getmem.term_cmd); |
| 1814 | monitor_expect_prompt (NULL, 0); |
| 1815 | } |
| 1816 | } |
| 1817 | else |
| 1818 | monitor_expect_prompt (NULL, 0); /* Get response. */ |
| 1819 | |
| 1820 | p = membuf; |
| 1821 | val = strtoul (membuf, &p, 16); |
| 1822 | |
| 1823 | if (val == 0 && membuf == p) |
| 1824 | monitor_error ("monitor_read_memory_single", |
| 1825 | "bad value from monitor", |
| 1826 | memaddr, 0, membuf, 0); |
| 1827 | |
| 1828 | /* supply register stores in target byte order, so swap here. */ |
| 1829 | |
| 1830 | store_unsigned_integer (myaddr, len, byte_order, val); |
| 1831 | |
| 1832 | return len; |
| 1833 | } |
| 1834 | |
| 1835 | /* Copy LEN bytes of data from debugger memory at MYADDR to inferior's |
| 1836 | memory at MEMADDR. Returns length moved. Currently, we do no more |
| 1837 | than 16 bytes at a time. */ |
| 1838 | |
| 1839 | static int |
| 1840 | monitor_read_memory (CORE_ADDR memaddr, gdb_byte *myaddr, int len) |
| 1841 | { |
| 1842 | unsigned int val; |
| 1843 | char buf[512]; |
| 1844 | char *p, *p1; |
| 1845 | int resp_len; |
| 1846 | int i; |
| 1847 | CORE_ADDR dumpaddr; |
| 1848 | |
| 1849 | if (len <= 0) |
| 1850 | { |
| 1851 | monitor_debug ("Zero length call to monitor_read_memory\n"); |
| 1852 | return 0; |
| 1853 | } |
| 1854 | |
| 1855 | monitor_debug ("MON read block ta(%s) ha(%s) %d\n", |
| 1856 | paddress (target_gdbarch (), memaddr), |
| 1857 | host_address_to_string (myaddr), len); |
| 1858 | |
| 1859 | if (current_monitor->flags & MO_ADDR_BITS_REMOVE) |
| 1860 | memaddr = gdbarch_addr_bits_remove (target_gdbarch (), memaddr); |
| 1861 | |
| 1862 | if (current_monitor->flags & MO_GETMEM_READ_SINGLE) |
| 1863 | return monitor_read_memory_single (memaddr, myaddr, len); |
| 1864 | |
| 1865 | len = min (len, 16); |
| 1866 | |
| 1867 | /* Some dumpers align the first data with the preceding 16 |
| 1868 | byte boundary. Some print blanks and start at the |
| 1869 | requested boundary. EXACT_DUMPADDR */ |
| 1870 | |
| 1871 | dumpaddr = (current_monitor->flags & MO_EXACT_DUMPADDR) |
| 1872 | ? memaddr : memaddr & ~0x0f; |
| 1873 | |
| 1874 | /* See if xfer would cross a 16 byte boundary. If so, clip it. */ |
| 1875 | if (((memaddr ^ (memaddr + len - 1)) & ~0xf) != 0) |
| 1876 | len = ((memaddr + len) & ~0xf) - memaddr; |
| 1877 | |
| 1878 | /* Send the memory examine command. */ |
| 1879 | |
| 1880 | if (current_monitor->flags & MO_GETMEM_NEEDS_RANGE) |
| 1881 | monitor_printf (current_monitor->getmem.cmdb, memaddr, memaddr + len); |
| 1882 | else if (current_monitor->flags & MO_GETMEM_16_BOUNDARY) |
| 1883 | monitor_printf (current_monitor->getmem.cmdb, dumpaddr); |
| 1884 | else |
| 1885 | monitor_printf (current_monitor->getmem.cmdb, memaddr, len); |
| 1886 | |
| 1887 | /* If TERM is present, we wait for that to show up. Also, (if TERM |
| 1888 | is present), we will send TERM_CMD if that is present. In any |
| 1889 | case, we collect all of the output into buf, and then wait for |
| 1890 | the normal prompt. */ |
| 1891 | |
| 1892 | if (current_monitor->getmem.term) |
| 1893 | { |
| 1894 | resp_len = monitor_expect (current_monitor->getmem.term, |
| 1895 | buf, sizeof buf); /* Get response. */ |
| 1896 | |
| 1897 | if (resp_len <= 0) |
| 1898 | monitor_error ("monitor_read_memory", |
| 1899 | "excessive response from monitor", |
| 1900 | memaddr, resp_len, buf, 0); |
| 1901 | |
| 1902 | if (current_monitor->getmem.term_cmd) |
| 1903 | { |
| 1904 | serial_write (monitor_desc, current_monitor->getmem.term_cmd, |
| 1905 | strlen (current_monitor->getmem.term_cmd)); |
| 1906 | monitor_expect_prompt (NULL, 0); |
| 1907 | } |
| 1908 | } |
| 1909 | else |
| 1910 | resp_len = monitor_expect_prompt (buf, sizeof buf); /* Get response. */ |
| 1911 | |
| 1912 | p = buf; |
| 1913 | |
| 1914 | /* If RESP_DELIM is specified, we search for that as a leading |
| 1915 | delimiter for the values. Otherwise, we just start searching |
| 1916 | from the start of the buf. */ |
| 1917 | |
| 1918 | if (current_monitor->getmem.resp_delim) |
| 1919 | { |
| 1920 | int retval, tmp; |
| 1921 | struct re_registers resp_strings; |
| 1922 | |
| 1923 | monitor_debug ("MON getmem.resp_delim %s\n", |
| 1924 | current_monitor->getmem.resp_delim); |
| 1925 | |
| 1926 | memset (&resp_strings, 0, sizeof (struct re_registers)); |
| 1927 | tmp = strlen (p); |
| 1928 | retval = re_search (&getmem_resp_delim_pattern, p, tmp, 0, tmp, |
| 1929 | &resp_strings); |
| 1930 | |
| 1931 | if (retval < 0) |
| 1932 | monitor_error ("monitor_read_memory", |
| 1933 | "bad response from monitor", |
| 1934 | memaddr, resp_len, buf, 0); |
| 1935 | |
| 1936 | p += resp_strings.end[0]; |
| 1937 | #if 0 |
| 1938 | p = strstr (p, current_monitor->getmem.resp_delim); |
| 1939 | if (!p) |
| 1940 | monitor_error ("monitor_read_memory", |
| 1941 | "bad response from monitor", |
| 1942 | memaddr, resp_len, buf, 0); |
| 1943 | p += strlen (current_monitor->getmem.resp_delim); |
| 1944 | #endif |
| 1945 | } |
| 1946 | monitor_debug ("MON scanning %d ,%s '%s'\n", len, |
| 1947 | host_address_to_string (p), p); |
| 1948 | if (current_monitor->flags & MO_GETMEM_16_BOUNDARY) |
| 1949 | { |
| 1950 | char c; |
| 1951 | int fetched = 0; |
| 1952 | i = len; |
| 1953 | c = *p; |
| 1954 | |
| 1955 | |
| 1956 | while (!(c == '\000' || c == '\n' || c == '\r') && i > 0) |
| 1957 | { |
| 1958 | if (isxdigit (c)) |
| 1959 | { |
| 1960 | if ((dumpaddr >= memaddr) && (i > 0)) |
| 1961 | { |
| 1962 | val = fromhex (c) * 16 + fromhex (*(p + 1)); |
| 1963 | *myaddr++ = val; |
| 1964 | if (monitor_debug_p || remote_debug) |
| 1965 | fprintf_unfiltered (gdb_stdlog, "[%02x]", val); |
| 1966 | --i; |
| 1967 | fetched++; |
| 1968 | } |
| 1969 | ++dumpaddr; |
| 1970 | ++p; |
| 1971 | } |
| 1972 | ++p; /* Skip a blank or other non hex char. */ |
| 1973 | c = *p; |
| 1974 | } |
| 1975 | if (fetched == 0) |
| 1976 | error (_("Failed to read via monitor")); |
| 1977 | if (monitor_debug_p || remote_debug) |
| 1978 | fprintf_unfiltered (gdb_stdlog, "\n"); |
| 1979 | return fetched; /* Return the number of bytes actually |
| 1980 | read. */ |
| 1981 | } |
| 1982 | monitor_debug ("MON scanning bytes\n"); |
| 1983 | |
| 1984 | for (i = len; i > 0; i--) |
| 1985 | { |
| 1986 | /* Skip non-hex chars, but bomb on end of string and newlines. */ |
| 1987 | |
| 1988 | while (1) |
| 1989 | { |
| 1990 | if (isxdigit (*p)) |
| 1991 | break; |
| 1992 | |
| 1993 | if (*p == '\000' || *p == '\n' || *p == '\r') |
| 1994 | monitor_error ("monitor_read_memory", |
| 1995 | "badly terminated response from monitor", |
| 1996 | memaddr, resp_len, buf, 0); |
| 1997 | p++; |
| 1998 | } |
| 1999 | |
| 2000 | val = strtoul (p, &p1, 16); |
| 2001 | |
| 2002 | if (val == 0 && p == p1) |
| 2003 | monitor_error ("monitor_read_memory", |
| 2004 | "bad value from monitor", |
| 2005 | memaddr, resp_len, buf, 0); |
| 2006 | |
| 2007 | *myaddr++ = val; |
| 2008 | |
| 2009 | if (i == 1) |
| 2010 | break; |
| 2011 | |
| 2012 | p = p1; |
| 2013 | } |
| 2014 | |
| 2015 | return len; |
| 2016 | } |
| 2017 | |
| 2018 | /* Helper for monitor_xfer_partial that handles memory transfers. |
| 2019 | Arguments are like target_xfer_partial. */ |
| 2020 | |
| 2021 | static LONGEST |
| 2022 | monitor_xfer_memory (gdb_byte *readbuf, const gdb_byte *writebuf, |
| 2023 | ULONGEST memaddr, ULONGEST len) |
| 2024 | { |
| 2025 | int res; |
| 2026 | |
| 2027 | if (writebuf != NULL) |
| 2028 | { |
| 2029 | if (current_monitor->flags & MO_HAS_BLOCKWRITES) |
| 2030 | res = monitor_write_memory_block (memaddr, writebuf, len); |
| 2031 | else |
| 2032 | res = monitor_write_memory (memaddr, writebuf, len); |
| 2033 | } |
| 2034 | else |
| 2035 | { |
| 2036 | res = monitor_read_memory (memaddr, readbuf, len); |
| 2037 | } |
| 2038 | |
| 2039 | if (res == 0) |
| 2040 | return TARGET_XFER_E_IO; |
| 2041 | return res; |
| 2042 | } |
| 2043 | |
| 2044 | /* Target to_xfer_partial implementation. */ |
| 2045 | |
| 2046 | static LONGEST |
| 2047 | monitor_xfer_partial (struct target_ops *ops, enum target_object object, |
| 2048 | const char *annex, gdb_byte *readbuf, |
| 2049 | const gdb_byte *writebuf, ULONGEST offset, ULONGEST len) |
| 2050 | { |
| 2051 | switch (object) |
| 2052 | { |
| 2053 | case TARGET_OBJECT_MEMORY: |
| 2054 | return monitor_xfer_memory (readbuf, writebuf, offset, len); |
| 2055 | |
| 2056 | default: |
| 2057 | return TARGET_XFER_E_IO; |
| 2058 | } |
| 2059 | } |
| 2060 | |
| 2061 | static void |
| 2062 | monitor_kill (struct target_ops *ops) |
| 2063 | { |
| 2064 | return; /* Ignore attempts to kill target system. */ |
| 2065 | } |
| 2066 | |
| 2067 | /* All we actually do is set the PC to the start address of exec_bfd. */ |
| 2068 | |
| 2069 | static void |
| 2070 | monitor_create_inferior (struct target_ops *ops, char *exec_file, |
| 2071 | char *args, char **env, int from_tty) |
| 2072 | { |
| 2073 | if (args && (*args != '\000')) |
| 2074 | error (_("Args are not supported by the monitor.")); |
| 2075 | |
| 2076 | first_time = 1; |
| 2077 | clear_proceed_status (); |
| 2078 | regcache_write_pc (get_current_regcache (), |
| 2079 | bfd_get_start_address (exec_bfd)); |
| 2080 | } |
| 2081 | |
| 2082 | /* Clean up when a program exits. |
| 2083 | The program actually lives on in the remote processor's RAM, and may be |
| 2084 | run again without a download. Don't leave it full of breakpoint |
| 2085 | instructions. */ |
| 2086 | |
| 2087 | static void |
| 2088 | monitor_mourn_inferior (struct target_ops *ops) |
| 2089 | { |
| 2090 | unpush_target (targ_ops); |
| 2091 | generic_mourn_inferior (); /* Do all the proper things now. */ |
| 2092 | delete_thread_silent (monitor_ptid); |
| 2093 | } |
| 2094 | |
| 2095 | /* Tell the monitor to add a breakpoint. */ |
| 2096 | |
| 2097 | static int |
| 2098 | monitor_insert_breakpoint (struct gdbarch *gdbarch, |
| 2099 | struct bp_target_info *bp_tgt) |
| 2100 | { |
| 2101 | CORE_ADDR addr = bp_tgt->placed_address; |
| 2102 | int i; |
| 2103 | int bplen; |
| 2104 | |
| 2105 | monitor_debug ("MON inst bkpt %s\n", paddress (gdbarch, addr)); |
| 2106 | if (current_monitor->set_break == NULL) |
| 2107 | error (_("No set_break defined for this monitor")); |
| 2108 | |
| 2109 | if (current_monitor->flags & MO_ADDR_BITS_REMOVE) |
| 2110 | addr = gdbarch_addr_bits_remove (gdbarch, addr); |
| 2111 | |
| 2112 | /* Determine appropriate breakpoint size for this address. */ |
| 2113 | gdbarch_breakpoint_from_pc (gdbarch, &addr, &bplen); |
| 2114 | bp_tgt->placed_address = addr; |
| 2115 | bp_tgt->placed_size = bplen; |
| 2116 | |
| 2117 | for (i = 0; i < current_monitor->num_breakpoints; i++) |
| 2118 | { |
| 2119 | if (breakaddr[i] == 0) |
| 2120 | { |
| 2121 | breakaddr[i] = addr; |
| 2122 | monitor_printf (current_monitor->set_break, addr); |
| 2123 | monitor_expect_prompt (NULL, 0); |
| 2124 | return 0; |
| 2125 | } |
| 2126 | } |
| 2127 | |
| 2128 | error (_("Too many breakpoints (> %d) for monitor."), |
| 2129 | current_monitor->num_breakpoints); |
| 2130 | } |
| 2131 | |
| 2132 | /* Tell the monitor to remove a breakpoint. */ |
| 2133 | |
| 2134 | static int |
| 2135 | monitor_remove_breakpoint (struct gdbarch *gdbarch, |
| 2136 | struct bp_target_info *bp_tgt) |
| 2137 | { |
| 2138 | CORE_ADDR addr = bp_tgt->placed_address; |
| 2139 | int i; |
| 2140 | |
| 2141 | monitor_debug ("MON rmbkpt %s\n", paddress (gdbarch, addr)); |
| 2142 | if (current_monitor->clr_break == NULL) |
| 2143 | error (_("No clr_break defined for this monitor")); |
| 2144 | |
| 2145 | for (i = 0; i < current_monitor->num_breakpoints; i++) |
| 2146 | { |
| 2147 | if (breakaddr[i] == addr) |
| 2148 | { |
| 2149 | breakaddr[i] = 0; |
| 2150 | /* Some monitors remove breakpoints based on the address. */ |
| 2151 | if (current_monitor->flags & MO_CLR_BREAK_USES_ADDR) |
| 2152 | monitor_printf (current_monitor->clr_break, addr); |
| 2153 | else if (current_monitor->flags & MO_CLR_BREAK_1_BASED) |
| 2154 | monitor_printf (current_monitor->clr_break, i + 1); |
| 2155 | else |
| 2156 | monitor_printf (current_monitor->clr_break, i); |
| 2157 | monitor_expect_prompt (NULL, 0); |
| 2158 | return 0; |
| 2159 | } |
| 2160 | } |
| 2161 | fprintf_unfiltered (gdb_stderr, |
| 2162 | "Can't find breakpoint associated with %s\n", |
| 2163 | paddress (gdbarch, addr)); |
| 2164 | return 1; |
| 2165 | } |
| 2166 | |
| 2167 | /* monitor_wait_srec_ack -- wait for the target to send an acknowledgement for |
| 2168 | an S-record. Return non-zero if the ACK is received properly. */ |
| 2169 | |
| 2170 | static int |
| 2171 | monitor_wait_srec_ack (void) |
| 2172 | { |
| 2173 | int ch; |
| 2174 | |
| 2175 | if (current_monitor->flags & MO_SREC_ACK_PLUS) |
| 2176 | { |
| 2177 | return (readchar (timeout) == '+'); |
| 2178 | } |
| 2179 | else if (current_monitor->flags & MO_SREC_ACK_ROTATE) |
| 2180 | { |
| 2181 | /* Eat two backspaces, a "rotating" char (|/-\), and a space. */ |
| 2182 | if ((ch = readchar (1)) < 0) |
| 2183 | return 0; |
| 2184 | if ((ch = readchar (1)) < 0) |
| 2185 | return 0; |
| 2186 | if ((ch = readchar (1)) < 0) |
| 2187 | return 0; |
| 2188 | if ((ch = readchar (1)) < 0) |
| 2189 | return 0; |
| 2190 | } |
| 2191 | return 1; |
| 2192 | } |
| 2193 | |
| 2194 | /* monitor_load -- download a file. */ |
| 2195 | |
| 2196 | static void |
| 2197 | monitor_load (char *args, int from_tty) |
| 2198 | { |
| 2199 | CORE_ADDR load_offset = 0; |
| 2200 | char **argv; |
| 2201 | struct cleanup *old_cleanups; |
| 2202 | char *filename; |
| 2203 | |
| 2204 | monitor_debug ("MON load\n"); |
| 2205 | |
| 2206 | if (args == NULL) |
| 2207 | error_no_arg (_("file to load")); |
| 2208 | |
| 2209 | argv = gdb_buildargv (args); |
| 2210 | old_cleanups = make_cleanup_freeargv (argv); |
| 2211 | |
| 2212 | filename = tilde_expand (argv[0]); |
| 2213 | make_cleanup (xfree, filename); |
| 2214 | |
| 2215 | /* Enable user to specify address for downloading as 2nd arg to load. */ |
| 2216 | if (argv[1] != NULL) |
| 2217 | { |
| 2218 | const char *endptr; |
| 2219 | |
| 2220 | load_offset = strtoulst (argv[1], &endptr, 0); |
| 2221 | |
| 2222 | /* If the last word was not a valid number then |
| 2223 | treat it as a file name with spaces in. */ |
| 2224 | if (argv[1] == endptr) |
| 2225 | error (_("Invalid download offset:%s."), argv[1]); |
| 2226 | |
| 2227 | if (argv[2] != NULL) |
| 2228 | error (_("Too many parameters.")); |
| 2229 | } |
| 2230 | |
| 2231 | monitor_printf (current_monitor->load); |
| 2232 | if (current_monitor->loadresp) |
| 2233 | monitor_expect (current_monitor->loadresp, NULL, 0); |
| 2234 | |
| 2235 | load_srec (monitor_desc, filename, load_offset, |
| 2236 | 32, SREC_ALL, hashmark, |
| 2237 | current_monitor->flags & MO_SREC_ACK ? |
| 2238 | monitor_wait_srec_ack : NULL); |
| 2239 | |
| 2240 | monitor_expect_prompt (NULL, 0); |
| 2241 | |
| 2242 | do_cleanups (old_cleanups); |
| 2243 | |
| 2244 | /* Finally, make the PC point at the start address. */ |
| 2245 | if (exec_bfd) |
| 2246 | regcache_write_pc (get_current_regcache (), |
| 2247 | bfd_get_start_address (exec_bfd)); |
| 2248 | |
| 2249 | /* There used to be code here which would clear inferior_ptid and |
| 2250 | call clear_symtab_users. None of that should be necessary: |
| 2251 | monitor targets should behave like remote protocol targets, and |
| 2252 | since generic_load does none of those things, this function |
| 2253 | shouldn't either. |
| 2254 | |
| 2255 | Furthermore, clearing inferior_ptid is *incorrect*. After doing |
| 2256 | a load, we still have a valid connection to the monitor, with a |
| 2257 | live processor state to fiddle with. The user can type |
| 2258 | `continue' or `jump *start' and make the program run. If they do |
| 2259 | these things, however, GDB will be talking to a running program |
| 2260 | while inferior_ptid is null_ptid; this makes things like |
| 2261 | reinit_frame_cache very confused. */ |
| 2262 | } |
| 2263 | |
| 2264 | static void |
| 2265 | monitor_stop (ptid_t ptid) |
| 2266 | { |
| 2267 | monitor_debug ("MON stop\n"); |
| 2268 | if ((current_monitor->flags & MO_SEND_BREAK_ON_STOP) != 0) |
| 2269 | serial_send_break (monitor_desc); |
| 2270 | if (current_monitor->stop) |
| 2271 | monitor_printf_noecho (current_monitor->stop); |
| 2272 | } |
| 2273 | |
| 2274 | /* Put a COMMAND string out to MONITOR. Output from MONITOR is placed |
| 2275 | in OUTPUT until the prompt is seen. FIXME: We read the characters |
| 2276 | ourseleves here cause of a nasty echo. */ |
| 2277 | |
| 2278 | static void |
| 2279 | monitor_rcmd (char *command, |
| 2280 | struct ui_file *outbuf) |
| 2281 | { |
| 2282 | char *p; |
| 2283 | int resp_len; |
| 2284 | char buf[1000]; |
| 2285 | |
| 2286 | if (monitor_desc == NULL) |
| 2287 | error (_("monitor target not open.")); |
| 2288 | |
| 2289 | p = current_monitor->prompt; |
| 2290 | |
| 2291 | /* Send the command. Note that if no args were supplied, then we're |
| 2292 | just sending the monitor a newline, which is sometimes useful. */ |
| 2293 | |
| 2294 | monitor_printf ("%s\r", (command ? command : "")); |
| 2295 | |
| 2296 | resp_len = monitor_expect_prompt (buf, sizeof buf); |
| 2297 | |
| 2298 | fputs_unfiltered (buf, outbuf); /* Output the response. */ |
| 2299 | } |
| 2300 | |
| 2301 | /* Convert hex digit A to a number. */ |
| 2302 | |
| 2303 | #if 0 |
| 2304 | static int |
| 2305 | from_hex (int a) |
| 2306 | { |
| 2307 | if (a >= '0' && a <= '9') |
| 2308 | return a - '0'; |
| 2309 | if (a >= 'a' && a <= 'f') |
| 2310 | return a - 'a' + 10; |
| 2311 | if (a >= 'A' && a <= 'F') |
| 2312 | return a - 'A' + 10; |
| 2313 | |
| 2314 | error (_("Reply contains invalid hex digit 0x%x"), a); |
| 2315 | } |
| 2316 | #endif |
| 2317 | |
| 2318 | char * |
| 2319 | monitor_get_dev_name (void) |
| 2320 | { |
| 2321 | return dev_name; |
| 2322 | } |
| 2323 | |
| 2324 | /* Check to see if a thread is still alive. */ |
| 2325 | |
| 2326 | static int |
| 2327 | monitor_thread_alive (struct target_ops *ops, ptid_t ptid) |
| 2328 | { |
| 2329 | if (ptid_equal (ptid, monitor_ptid)) |
| 2330 | /* The monitor's task is always alive. */ |
| 2331 | return 1; |
| 2332 | |
| 2333 | return 0; |
| 2334 | } |
| 2335 | |
| 2336 | /* Convert a thread ID to a string. Returns the string in a static |
| 2337 | buffer. */ |
| 2338 | |
| 2339 | static char * |
| 2340 | monitor_pid_to_str (struct target_ops *ops, ptid_t ptid) |
| 2341 | { |
| 2342 | static char buf[64]; |
| 2343 | |
| 2344 | if (ptid_equal (monitor_ptid, ptid)) |
| 2345 | { |
| 2346 | xsnprintf (buf, sizeof buf, "Thread <main>"); |
| 2347 | return buf; |
| 2348 | } |
| 2349 | |
| 2350 | return normal_pid_to_str (ptid); |
| 2351 | } |
| 2352 | |
| 2353 | static struct target_ops monitor_ops; |
| 2354 | |
| 2355 | static void |
| 2356 | init_base_monitor_ops (void) |
| 2357 | { |
| 2358 | monitor_ops.to_close = monitor_close; |
| 2359 | monitor_ops.to_detach = monitor_detach; |
| 2360 | monitor_ops.to_resume = monitor_resume; |
| 2361 | monitor_ops.to_wait = monitor_wait; |
| 2362 | monitor_ops.to_fetch_registers = monitor_fetch_registers; |
| 2363 | monitor_ops.to_store_registers = monitor_store_registers; |
| 2364 | monitor_ops.to_prepare_to_store = monitor_prepare_to_store; |
| 2365 | monitor_ops.to_xfer_partial = monitor_xfer_partial; |
| 2366 | monitor_ops.to_files_info = monitor_files_info; |
| 2367 | monitor_ops.to_insert_breakpoint = monitor_insert_breakpoint; |
| 2368 | monitor_ops.to_remove_breakpoint = monitor_remove_breakpoint; |
| 2369 | monitor_ops.to_kill = monitor_kill; |
| 2370 | monitor_ops.to_load = monitor_load; |
| 2371 | monitor_ops.to_create_inferior = monitor_create_inferior; |
| 2372 | monitor_ops.to_mourn_inferior = monitor_mourn_inferior; |
| 2373 | monitor_ops.to_stop = monitor_stop; |
| 2374 | monitor_ops.to_rcmd = monitor_rcmd; |
| 2375 | monitor_ops.to_log_command = serial_log_command; |
| 2376 | monitor_ops.to_thread_alive = monitor_thread_alive; |
| 2377 | monitor_ops.to_pid_to_str = monitor_pid_to_str; |
| 2378 | monitor_ops.to_stratum = process_stratum; |
| 2379 | monitor_ops.to_has_all_memory = default_child_has_all_memory; |
| 2380 | monitor_ops.to_has_memory = default_child_has_memory; |
| 2381 | monitor_ops.to_has_stack = default_child_has_stack; |
| 2382 | monitor_ops.to_has_registers = default_child_has_registers; |
| 2383 | monitor_ops.to_has_execution = default_child_has_execution; |
| 2384 | monitor_ops.to_magic = OPS_MAGIC; |
| 2385 | } /* init_base_monitor_ops */ |
| 2386 | |
| 2387 | /* Init the target_ops structure pointed at by OPS. */ |
| 2388 | |
| 2389 | void |
| 2390 | init_monitor_ops (struct target_ops *ops) |
| 2391 | { |
| 2392 | if (monitor_ops.to_magic != OPS_MAGIC) |
| 2393 | init_base_monitor_ops (); |
| 2394 | |
| 2395 | memcpy (ops, &monitor_ops, sizeof monitor_ops); |
| 2396 | } |
| 2397 | |
| 2398 | /* Define additional commands that are usually only used by monitors. */ |
| 2399 | |
| 2400 | /* -Wmissing-prototypes */ |
| 2401 | extern initialize_file_ftype _initialize_remote_monitors; |
| 2402 | |
| 2403 | void |
| 2404 | _initialize_remote_monitors (void) |
| 2405 | { |
| 2406 | init_base_monitor_ops (); |
| 2407 | add_setshow_boolean_cmd ("hash", no_class, &hashmark, _("\ |
| 2408 | Set display of activity while downloading a file."), _("\ |
| 2409 | Show display of activity while downloading a file."), _("\ |
| 2410 | When enabled, a hashmark \'#\' is displayed."), |
| 2411 | NULL, |
| 2412 | NULL, /* FIXME: i18n: */ |
| 2413 | &setlist, &showlist); |
| 2414 | |
| 2415 | add_setshow_zuinteger_cmd ("monitor", no_class, &monitor_debug_p, _("\ |
| 2416 | Set debugging of remote monitor communication."), _("\ |
| 2417 | Show debugging of remote monitor communication."), _("\ |
| 2418 | When enabled, communication between GDB and the remote monitor\n\ |
| 2419 | is displayed."), |
| 2420 | NULL, |
| 2421 | NULL, /* FIXME: i18n: */ |
| 2422 | &setdebuglist, &showdebuglist); |
| 2423 | |
| 2424 | /* Yes, 42000 is arbitrary. The only sense out of it, is that it |
| 2425 | isn't 0. */ |
| 2426 | monitor_ptid = ptid_build (42000, 0, 42000); |
| 2427 | } |