| 1 | /* Remote debugging interface for Hitachi HMS Monitor Version 1.0 |
| 2 | |
| 3 | Copyright 1992 Free Software Foundation, Inc. |
| 4 | |
| 5 | Contributed by Steve Chamberlain sac@cygnus.com |
| 6 | |
| 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 2 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, write to the Free Software |
| 22 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ |
| 23 | |
| 24 | |
| 25 | |
| 26 | #include <stdio.h> |
| 27 | #include <string.h> |
| 28 | #include "defs.h" |
| 29 | #include "inferior.h" |
| 30 | #include "wait.h" |
| 31 | #include "value.h" |
| 32 | #include <ctype.h> |
| 33 | #include <fcntl.h> |
| 34 | #include <signal.h> |
| 35 | #include <setjmp.h> |
| 36 | #include <errno.h> |
| 37 | #include "terminal.h" |
| 38 | #include "target.h" |
| 39 | #include "gdbcore.h" |
| 40 | |
| 41 | /* External data declarations */ |
| 42 | extern int stop_soon_quietly; /* for wait_for_inferior */ |
| 43 | |
| 44 | /* External function declarations */ |
| 45 | extern struct value *call_function_by_hand(); |
| 46 | |
| 47 | /* Forward data declarations */ |
| 48 | extern struct target_ops hms_ops; /* Forward declaration */ |
| 49 | |
| 50 | /* Forward function declarations */ |
| 51 | static void hms_fetch_registers (); |
| 52 | static int hms_store_registers (); |
| 53 | static void hms_close (); |
| 54 | static int hms_clear_breakpoints(); |
| 55 | |
| 56 | extern struct target_ops hms_ops; |
| 57 | |
| 58 | static int quiet = 1; |
| 59 | |
| 60 | #ifdef DEBUG |
| 61 | # define DENTER(NAME) if (!quiet) (printf_filtered("Entering %s\n",NAME), fflush(stdout)) |
| 62 | # define DEXIT(NAME) if (!quiet) (printf_filtered("Exiting %s\n",NAME), fflush(stdout)) |
| 63 | #else |
| 64 | # define DENTER(NAME) |
| 65 | # define DEXIT(NAME) |
| 66 | #endif |
| 67 | |
| 68 | |
| 69 | /***********************************************************************/ |
| 70 | /* Caching stuff stolen from remote-nindy.c */ |
| 71 | |
| 72 | /* The data cache records all the data read from the remote machine |
| 73 | since the last time it stopped. |
| 74 | |
| 75 | Each cache block holds LINE_SIZE bytes of data |
| 76 | starting at a multiple-of-LINE_SIZE address. */ |
| 77 | |
| 78 | |
| 79 | #define LINE_SIZE_POWER 4 |
| 80 | #define LINE_SIZE (1<<LINE_SIZE_POWER) /* eg 1<<3 == 8 */ |
| 81 | #define LINE_SIZE_MASK ((LINE_SIZE-1)) /* eg 7*2+1= 111*/ |
| 82 | #define DCACHE_SIZE 64 /* Number of cache blocks */ |
| 83 | #define XFORM(x) ((x&LINE_SIZE_MASK)>>2) |
| 84 | struct dcache_block { |
| 85 | struct dcache_block *next, *last; |
| 86 | unsigned int addr; /* Address for which data is recorded. */ |
| 87 | int data[LINE_SIZE/sizeof(int)]; |
| 88 | }; |
| 89 | |
| 90 | struct dcache_block dcache_free, dcache_valid; |
| 91 | |
| 92 | /* Free all the data cache blocks, thus discarding all cached data. */ |
| 93 | static |
| 94 | void |
| 95 | dcache_flush () |
| 96 | { |
| 97 | register struct dcache_block *db; |
| 98 | |
| 99 | while ((db = dcache_valid.next) != &dcache_valid) |
| 100 | { |
| 101 | remque (db); |
| 102 | insque (db, &dcache_free); |
| 103 | } |
| 104 | } |
| 105 | |
| 106 | /* |
| 107 | * If addr is present in the dcache, return the address of the block |
| 108 | * containing it. |
| 109 | */ |
| 110 | static |
| 111 | struct dcache_block * |
| 112 | dcache_hit (addr) |
| 113 | unsigned int addr; |
| 114 | { |
| 115 | register struct dcache_block *db; |
| 116 | |
| 117 | if (addr & 3) |
| 118 | abort (); |
| 119 | |
| 120 | /* Search all cache blocks for one that is at this address. */ |
| 121 | db = dcache_valid.next; |
| 122 | while (db != &dcache_valid) |
| 123 | { |
| 124 | if ((addr & ~LINE_SIZE_MASK)== db->addr) |
| 125 | return db; |
| 126 | db = db->next; |
| 127 | } |
| 128 | return NULL; |
| 129 | } |
| 130 | |
| 131 | /* Return the int data at address ADDR in dcache block DC. */ |
| 132 | static |
| 133 | int |
| 134 | dcache_value (db, addr) |
| 135 | struct dcache_block *db; |
| 136 | unsigned int addr; |
| 137 | { |
| 138 | if (addr & 3) |
| 139 | abort (); |
| 140 | return (db->data[XFORM(addr)]); |
| 141 | } |
| 142 | |
| 143 | /* Get a free cache block, put or keep it on the valid list, |
| 144 | and return its address. The caller should store into the block |
| 145 | the address and data that it describes, then remque it from the |
| 146 | free list and insert it into the valid list. This procedure |
| 147 | prevents errors from creeping in if a ninMemGet is interrupted |
| 148 | (which used to put garbage blocks in the valid list...). */ |
| 149 | static |
| 150 | struct dcache_block * |
| 151 | dcache_alloc () |
| 152 | { |
| 153 | register struct dcache_block *db; |
| 154 | |
| 155 | if ((db = dcache_free.next) == &dcache_free) |
| 156 | { |
| 157 | /* If we can't get one from the free list, take last valid and put |
| 158 | it on the free list. */ |
| 159 | db = dcache_valid.last; |
| 160 | remque (db); |
| 161 | insque (db, &dcache_free); |
| 162 | } |
| 163 | |
| 164 | remque (db); |
| 165 | insque (db, &dcache_valid); |
| 166 | return (db); |
| 167 | } |
| 168 | |
| 169 | /* Return the contents of the word at address ADDR in the remote machine, |
| 170 | using the data cache. */ |
| 171 | static |
| 172 | int |
| 173 | dcache_fetch (addr) |
| 174 | CORE_ADDR addr; |
| 175 | { |
| 176 | register struct dcache_block *db; |
| 177 | |
| 178 | db = dcache_hit (addr); |
| 179 | if (db == 0) |
| 180 | { |
| 181 | db = dcache_alloc (); |
| 182 | immediate_quit++; |
| 183 | hms_read_inferior_memory(addr & ~LINE_SIZE_MASK, (unsigned char *)db->data, LINE_SIZE); |
| 184 | immediate_quit--; |
| 185 | db->addr = addr & ~LINE_SIZE_MASK; |
| 186 | remque (db); /* Off the free list */ |
| 187 | insque (db, &dcache_valid); /* On the valid list */ |
| 188 | } |
| 189 | return (dcache_value (db, addr)); |
| 190 | } |
| 191 | |
| 192 | /* Write the word at ADDR both in the data cache and in the remote machine. */ |
| 193 | static void |
| 194 | dcache_poke (addr, data) |
| 195 | CORE_ADDR addr; |
| 196 | int data; |
| 197 | { |
| 198 | register struct dcache_block *db; |
| 199 | |
| 200 | /* First make sure the word is IN the cache. DB is its cache block. */ |
| 201 | db = dcache_hit (addr); |
| 202 | if (db == 0) |
| 203 | { |
| 204 | db = dcache_alloc (); |
| 205 | immediate_quit++; |
| 206 | hms_write_inferior_memory(addr & ~LINE_SIZE_MASK, (unsigned char *)db->data, LINE_SIZE); |
| 207 | immediate_quit--; |
| 208 | db->addr = addr & ~LINE_SIZE_MASK; |
| 209 | remque (db); /* Off the free list */ |
| 210 | insque (db, &dcache_valid); /* On the valid list */ |
| 211 | } |
| 212 | |
| 213 | /* Modify the word in the cache. */ |
| 214 | db->data[XFORM(addr)] = data; |
| 215 | |
| 216 | /* Send the changed word. */ |
| 217 | immediate_quit++; |
| 218 | hms_write_inferior_memory(addr, (unsigned char *)&data, 4); |
| 219 | immediate_quit--; |
| 220 | } |
| 221 | |
| 222 | /* The cache itself. */ |
| 223 | struct dcache_block the_cache[DCACHE_SIZE]; |
| 224 | |
| 225 | /* Initialize the data cache. */ |
| 226 | static void |
| 227 | dcache_init () |
| 228 | { |
| 229 | register i; |
| 230 | register struct dcache_block *db; |
| 231 | |
| 232 | db = the_cache; |
| 233 | dcache_free.next = dcache_free.last = &dcache_free; |
| 234 | dcache_valid.next = dcache_valid.last = &dcache_valid; |
| 235 | for (i=0;i<DCACHE_SIZE;i++,db++) |
| 236 | insque (db, &dcache_free); |
| 237 | } |
| 238 | |
| 239 | |
| 240 | /*********************************************************************** |
| 241 | * I/O stuff stolen from remote-eb.c |
| 242 | ***********************************************************************/ |
| 243 | |
| 244 | static int timeout = 2; |
| 245 | static char *dev_name = "/dev/ttya"; |
| 246 | |
| 247 | |
| 248 | |
| 249 | |
| 250 | /* Descriptor for I/O to remote machine. Initialize it to -1 so that |
| 251 | hms_open knows that we don't have a file open when the program |
| 252 | starts. */ |
| 253 | int hms_desc = -1; |
| 254 | #define OPEN(x) ((x) >= 0) |
| 255 | |
| 256 | |
| 257 | void hms_open(); |
| 258 | |
| 259 | #define ON 1 |
| 260 | #define OFF 0 |
| 261 | static void |
| 262 | rawmode(desc, turnon) |
| 263 | int desc; |
| 264 | int turnon; |
| 265 | { |
| 266 | TERMINAL sg; |
| 267 | |
| 268 | if (desc < 0) |
| 269 | return; |
| 270 | |
| 271 | ioctl (desc, TIOCGETP, &sg); |
| 272 | |
| 273 | if (turnon) { |
| 274 | #ifdef HAVE_TERMIO |
| 275 | sg.c_lflag &= ~(ICANON); |
| 276 | #else |
| 277 | sg.sg_flags |= RAW; |
| 278 | #endif |
| 279 | } else { |
| 280 | #ifdef HAVE_TERMIO |
| 281 | sg.c_lflag |= ICANON; |
| 282 | #else |
| 283 | sg.sg_flags &= ~(RAW); |
| 284 | #endif |
| 285 | } |
| 286 | ioctl (desc, TIOCSETP, &sg); |
| 287 | } |
| 288 | |
| 289 | |
| 290 | /* Read a character from the remote system, doing all the fancy |
| 291 | timeout stuff. */ |
| 292 | static int |
| 293 | readchar () |
| 294 | { |
| 295 | char buf; |
| 296 | |
| 297 | buf = '\0'; |
| 298 | #ifdef HAVE_TERMIO |
| 299 | /* termio does the timeout for us. */ |
| 300 | read (hms_desc, &buf, 1); |
| 301 | #else |
| 302 | alarm (timeout); |
| 303 | if (read (hms_desc, &buf, 1) < 0) |
| 304 | { |
| 305 | if (errno == EINTR) |
| 306 | error ("Timeout reading from remote system."); |
| 307 | else |
| 308 | perror_with_name ("remote"); |
| 309 | } |
| 310 | alarm (0); |
| 311 | #endif |
| 312 | |
| 313 | if (buf == '\0') |
| 314 | error ("Timeout reading from remote system."); |
| 315 | |
| 316 | if (!quiet) |
| 317 | printf("%c",buf); |
| 318 | |
| 319 | return buf & 0x7f; |
| 320 | } |
| 321 | |
| 322 | static int |
| 323 | readchar_nofail () |
| 324 | { |
| 325 | char buf; |
| 326 | |
| 327 | buf = '\0'; |
| 328 | #ifdef HAVE_TERMIO |
| 329 | /* termio does the timeout for us. */ |
| 330 | read (hms_desc, &buf, 1); |
| 331 | #else |
| 332 | alarm (timeout); |
| 333 | if (read (hms_desc, &buf, 1) < 0) |
| 334 | { |
| 335 | return 0; |
| 336 | } |
| 337 | alarm (0); |
| 338 | #endif |
| 339 | |
| 340 | if (buf == '\0') |
| 341 | { |
| 342 | return 0; |
| 343 | } |
| 344 | return buf & 0x7f; |
| 345 | } |
| 346 | |
| 347 | /* Keep discarding input from the remote system, until STRING is found. |
| 348 | Let the user break out immediately. */ |
| 349 | static void |
| 350 | expect (string) |
| 351 | char *string; |
| 352 | { |
| 353 | char *p = string; |
| 354 | |
| 355 | |
| 356 | immediate_quit = 1; |
| 357 | while (1) |
| 358 | { |
| 359 | if (readchar() == *p) |
| 360 | { |
| 361 | p++; |
| 362 | if (*p == '\0') |
| 363 | { |
| 364 | immediate_quit = 0; |
| 365 | return; |
| 366 | } |
| 367 | } |
| 368 | else |
| 369 | p = string; |
| 370 | } |
| 371 | } |
| 372 | |
| 373 | /* Keep discarding input until we see the hms prompt. |
| 374 | |
| 375 | The convention for dealing with the prompt is that you |
| 376 | o give your command |
| 377 | o *then* wait for the prompt. |
| 378 | |
| 379 | Thus the last thing that a procedure does with the serial line |
| 380 | will be an expect_prompt(). Exception: hms_resume does not |
| 381 | wait for the prompt, because the terminal is being handed over |
| 382 | to the inferior. However, the next thing which happens after that |
| 383 | is a hms_wait which does wait for the prompt. |
| 384 | Note that this includes abnormal exit, e.g. error(). This is |
| 385 | necessary to prevent getting into states from which we can't |
| 386 | recover. */ |
| 387 | static void |
| 388 | expect_prompt () |
| 389 | { |
| 390 | |
| 391 | expect ("HMS>"); |
| 392 | } |
| 393 | |
| 394 | /* Get a hex digit from the remote system & return its value. |
| 395 | If ignore_space is nonzero, ignore spaces (not newline, tab, etc). */ |
| 396 | static int |
| 397 | get_hex_digit (ignore_space) |
| 398 | int ignore_space; |
| 399 | { |
| 400 | int ch; |
| 401 | while (1) |
| 402 | { |
| 403 | ch = readchar (); |
| 404 | if (ch >= '0' && ch <= '9') |
| 405 | return ch - '0'; |
| 406 | else if (ch >= 'A' && ch <= 'F') |
| 407 | return ch - 'A' + 10; |
| 408 | else if (ch >= 'a' && ch <= 'f') |
| 409 | return ch - 'a' + 10; |
| 410 | else if (ch == ' ' && ignore_space) |
| 411 | ; |
| 412 | else |
| 413 | { |
| 414 | expect_prompt (); |
| 415 | error ("Invalid hex digit from remote system."); |
| 416 | } |
| 417 | } |
| 418 | } |
| 419 | |
| 420 | /* Get a byte from hms_desc and put it in *BYT. Accept any number |
| 421 | leading spaces. */ |
| 422 | static void |
| 423 | get_hex_byte (byt) |
| 424 | char *byt; |
| 425 | { |
| 426 | int val; |
| 427 | |
| 428 | val = get_hex_digit (1) << 4; |
| 429 | val |= get_hex_digit (0); |
| 430 | *byt = val; |
| 431 | } |
| 432 | |
| 433 | /* Read a 32-bit hex word from the hms, preceded by a space */ |
| 434 | static long |
| 435 | get_hex_word() |
| 436 | { |
| 437 | long val; |
| 438 | int j; |
| 439 | |
| 440 | val = 0; |
| 441 | for (j = 0; j < 8; j++) |
| 442 | val = (val << 4) + get_hex_digit (j == 0); |
| 443 | return val; |
| 444 | } |
| 445 | /* Called when SIGALRM signal sent due to alarm() timeout. */ |
| 446 | #ifndef HAVE_TERMIO |
| 447 | |
| 448 | #ifndef __STDC__ |
| 449 | # ifndef volatile |
| 450 | # define volatile /**/ |
| 451 | # endif |
| 452 | #endif |
| 453 | volatile int n_alarms; |
| 454 | |
| 455 | void |
| 456 | hms_timer () |
| 457 | { |
| 458 | n_alarms++; |
| 459 | } |
| 460 | #endif |
| 461 | |
| 462 | |
| 463 | /* Number of SIGTRAPs we need to simulate. That is, the next |
| 464 | NEED_ARTIFICIAL_TRAP calls to hms_wait should just return |
| 465 | SIGTRAP without actually waiting for anything. */ |
| 466 | |
| 467 | static int need_artificial_trap = 0; |
| 468 | |
| 469 | void |
| 470 | hms_kill(arg,from_tty) |
| 471 | char *arg; |
| 472 | int from_tty; |
| 473 | { |
| 474 | |
| 475 | } |
| 476 | |
| 477 | static check_open() |
| 478 | { |
| 479 | if (!OPEN(hms_desc)) { |
| 480 | hms_open("",0); |
| 481 | } |
| 482 | } |
| 483 | |
| 484 | /* |
| 485 | * Download a file specified in 'args', to the hms. |
| 486 | */ |
| 487 | static void |
| 488 | hms_load(args,fromtty) |
| 489 | char *args; |
| 490 | int fromtty; |
| 491 | { |
| 492 | bfd *abfd; |
| 493 | asection *s; |
| 494 | int n; |
| 495 | char buffer[1024]; |
| 496 | |
| 497 | DENTER("hms_load()"); |
| 498 | check_open(); |
| 499 | |
| 500 | dcache_flush(); |
| 501 | inferior_pid = 0; |
| 502 | abfd = bfd_openr(args,"coff-h8300"); |
| 503 | if (!abfd) |
| 504 | { |
| 505 | printf_filtered("Unable to open file %s\n", args); |
| 506 | return; |
| 507 | } |
| 508 | |
| 509 | if (bfd_check_format(abfd, bfd_object) ==0) |
| 510 | { |
| 511 | printf_filtered("File is not an object file\n"); |
| 512 | return ; |
| 513 | } |
| 514 | |
| 515 | s = abfd->sections; |
| 516 | while (s != (asection *)NULL) |
| 517 | { |
| 518 | if (s->flags & SEC_LOAD) |
| 519 | { |
| 520 | char *buffer = xmalloc(s->_raw_size); |
| 521 | bfd_get_section_contents(abfd, s, buffer, 0, s->_raw_size); |
| 522 | |
| 523 | hms_write_inferior_memory(s->vma, buffer, s->_raw_size); |
| 524 | free(buffer); |
| 525 | } |
| 526 | s = s->next; |
| 527 | } |
| 528 | |
| 529 | DEXIT("hms_load()"); |
| 530 | } |
| 531 | |
| 532 | /* This is called not only when we first attach, but also when the |
| 533 | user types "run" after having attached. */ |
| 534 | void |
| 535 | hms_create_inferior (execfile, args, env) |
| 536 | char *execfile; |
| 537 | char *args; |
| 538 | char **env; |
| 539 | { |
| 540 | int entry_pt; |
| 541 | |
| 542 | DENTER("hms_create_inferior()"); |
| 543 | |
| 544 | if (args && *args) |
| 545 | error ("Can't pass arguments to remote hms process."); |
| 546 | |
| 547 | if (execfile == 0 || exec_bfd == 0) |
| 548 | error ("No exec file specified"); |
| 549 | |
| 550 | entry_pt = (int) bfd_get_start_address (exec_bfd); |
| 551 | check_open(); |
| 552 | |
| 553 | if (OPEN(hms_desc)) |
| 554 | { |
| 555 | |
| 556 | hms_kill(NULL,NULL); |
| 557 | hms_clear_breakpoints(); |
| 558 | init_wait_for_inferior (); |
| 559 | /* Clear the input because what the hms sends back is different |
| 560 | * depending on whether it was running or not. |
| 561 | */ |
| 562 | |
| 563 | hms_write_cr("r"); |
| 564 | |
| 565 | expect_prompt(); |
| 566 | |
| 567 | |
| 568 | insert_breakpoints (); /* Needed to get correct instruction in cache */ |
| 569 | proceed(entry_pt, -1, 0); |
| 570 | |
| 571 | |
| 572 | } |
| 573 | DEXIT("hms_create_inferior()"); |
| 574 | } |
| 575 | |
| 576 | /* Translate baud rates from integers to damn B_codes. Unix should |
| 577 | have outgrown this crap years ago, but even POSIX wouldn't buck it. */ |
| 578 | |
| 579 | #ifndef B19200 |
| 580 | #define B19200 EXTA |
| 581 | #endif |
| 582 | #ifndef B38400 |
| 583 | #define B38400 EXTB |
| 584 | #endif |
| 585 | |
| 586 | static struct {int rate, damn_b;} baudtab[] = { |
| 587 | {9600, B9600}, |
| 588 | {19200, B19200}, |
| 589 | {300, B300}, |
| 590 | {1200, B1200}, |
| 591 | {2400, B2400}, |
| 592 | {4800, B4800}, |
| 593 | {-1, -1}, |
| 594 | }; |
| 595 | |
| 596 | static int damn_b (rate) |
| 597 | int rate; |
| 598 | { |
| 599 | int i; |
| 600 | |
| 601 | for (i = 0; baudtab[i].rate != -1; i++) |
| 602 | if (rate == baudtab[i].rate) return baudtab[i].damn_b; |
| 603 | return B19200; |
| 604 | } |
| 605 | |
| 606 | |
| 607 | /* Open a connection to a remote debugger. |
| 608 | NAME is the filename used for communication, then a space, |
| 609 | then the baud rate. |
| 610 | */ |
| 611 | |
| 612 | static char * |
| 613 | find_end_of_word(s) |
| 614 | char *s; |
| 615 | { |
| 616 | while (*s && !isspace(*s)) |
| 617 | s++; |
| 618 | return s; |
| 619 | } |
| 620 | |
| 621 | static char *get_word(p) |
| 622 | char **p; |
| 623 | { |
| 624 | char *s = *p; |
| 625 | char *word ; |
| 626 | char *copy; |
| 627 | size_t len; |
| 628 | |
| 629 | while (isspace(*s)) |
| 630 | s++; |
| 631 | |
| 632 | word = s; |
| 633 | |
| 634 | len = 0; |
| 635 | |
| 636 | while (*s && !isspace(*s)) |
| 637 | { |
| 638 | s++; |
| 639 | len++; |
| 640 | |
| 641 | } |
| 642 | copy = xmalloc(len+1); |
| 643 | memcpy(copy, word, len); |
| 644 | copy[len] = 0; |
| 645 | *p = s; |
| 646 | return copy; |
| 647 | } |
| 648 | |
| 649 | static int baudrate = 9600; |
| 650 | |
| 651 | static int |
| 652 | is_baudrate_right() |
| 653 | { |
| 654 | |
| 655 | |
| 656 | /* Put this port into NORMAL mode, send the 'normal' character */ |
| 657 | hms_write("\001", 1); /* Control A */ |
| 658 | hms_write("\r", 1); /* Cr */ |
| 659 | |
| 660 | while ( readchar_nofail()) /* Skip noise we put there */ |
| 661 | ; |
| 662 | |
| 663 | hms_write("r"); |
| 664 | if (readchar_nofail() == 'r') |
| 665 | return 1; |
| 666 | |
| 667 | /* Not the right baudrate, or the board's not on */ |
| 668 | return 0; |
| 669 | |
| 670 | |
| 671 | } |
| 672 | static void |
| 673 | set_rate() |
| 674 | { |
| 675 | TERMINAL sg; |
| 676 | ioctl (hms_desc, TIOCGETP, &sg); |
| 677 | #ifdef HAVE_TERMIO |
| 678 | sg.c_cc[VMIN] = 0; /* read with timeout. */ |
| 679 | sg.c_cc[VTIME] = timeout * 10; |
| 680 | sg.c_lflag &= ~(ICANON | ECHO); |
| 681 | sg.c_cflag = (sg.c_cflag & ~CBAUD) | damn_b (baudrate); |
| 682 | #else |
| 683 | sg.sg_ispeed = damn_b (baudrate); |
| 684 | sg.sg_ospeed = damn_b (baudrate); |
| 685 | sg.sg_flags |= RAW | ANYP; |
| 686 | sg.sg_flags &= ~ECHO; |
| 687 | #endif |
| 688 | |
| 689 | ioctl (hms_desc, TIOCSETP, &sg); |
| 690 | } |
| 691 | |
| 692 | static void |
| 693 | get_baudrate_right() |
| 694 | { |
| 695 | |
| 696 | int which_rate = 0; |
| 697 | |
| 698 | while (!is_baudrate_right()) |
| 699 | { |
| 700 | if (baudtab[which_rate].rate == -1) |
| 701 | { |
| 702 | which_rate = 0; |
| 703 | } |
| 704 | else |
| 705 | { |
| 706 | which_rate++; |
| 707 | } |
| 708 | |
| 709 | baudrate = baudtab[which_rate].rate; |
| 710 | printf_filtered("Board not responding, trying %d baud\n",baudrate); |
| 711 | QUIT; |
| 712 | set_rate(); |
| 713 | } |
| 714 | } |
| 715 | |
| 716 | static void |
| 717 | hms_open (name, from_tty) |
| 718 | char *name; |
| 719 | int from_tty; |
| 720 | { |
| 721 | |
| 722 | unsigned int prl; |
| 723 | char *p; |
| 724 | |
| 725 | DENTER("hms_open()"); |
| 726 | if(name == 0) |
| 727 | { |
| 728 | name = ""; |
| 729 | |
| 730 | } |
| 731 | |
| 732 | hms_close (0); |
| 733 | |
| 734 | hms_desc = open (dev_name, O_RDWR); |
| 735 | if (hms_desc < 0) |
| 736 | perror_with_name (dev_name); |
| 737 | |
| 738 | set_rate(); |
| 739 | |
| 740 | dcache_init(); |
| 741 | |
| 742 | |
| 743 | /* start_remote (); /* Initialize gdb process mechanisms */ |
| 744 | |
| 745 | |
| 746 | #ifndef HAVE_TERMIO |
| 747 | #ifndef NO_SIGINTERRUPT |
| 748 | /* Cause SIGALRM's to make reads fail with EINTR instead of resuming |
| 749 | the read. */ |
| 750 | if (siginterrupt (SIGALRM, 1) != 0) |
| 751 | perror ("hms_open: error in siginterrupt"); |
| 752 | #endif |
| 753 | |
| 754 | /* Set up read timeout timer. */ |
| 755 | if ((void (*)) signal (SIGALRM, hms_timer) == (void (*)) -1) |
| 756 | perror ("hms_open: error in signal"); |
| 757 | #endif |
| 758 | |
| 759 | get_baudrate_right(); |
| 760 | |
| 761 | /* Hello? Are you there? */ |
| 762 | write (hms_desc, "\r", 1); |
| 763 | |
| 764 | expect_prompt (); |
| 765 | |
| 766 | /* Clear any break points */ |
| 767 | hms_clear_breakpoints(); |
| 768 | |
| 769 | |
| 770 | printf_filtered("Remote debugging on an H8/300 HMS via %s.\n",dev_name); |
| 771 | |
| 772 | DEXIT("hms_open()"); |
| 773 | } |
| 774 | |
| 775 | /* Close out all files and local state before this target loses control. */ |
| 776 | |
| 777 | static void |
| 778 | hms_close (quitting) |
| 779 | int quitting; |
| 780 | { |
| 781 | |
| 782 | DENTER("hms_close()"); |
| 783 | |
| 784 | /* Clear any break points */ |
| 785 | hms_clear_breakpoints(); |
| 786 | |
| 787 | /* Put this port back into REMOTE mode */ |
| 788 | if (OPEN(hms_desc)) { |
| 789 | |
| 790 | sleep(1); /* Let any output make it all the way back */ |
| 791 | write(hms_desc, "R\r", 2); |
| 792 | } |
| 793 | |
| 794 | /* Due to a bug in Unix, fclose closes not only the stdio stream, |
| 795 | but also the file descriptor. So we don't actually close |
| 796 | hms_desc. */ |
| 797 | if (OPEN(hms_desc)) |
| 798 | close (hms_desc); |
| 799 | |
| 800 | /* Do not try to close hms_desc again, later in the program. */ |
| 801 | |
| 802 | hms_desc = -1; |
| 803 | |
| 804 | DEXIT("hms_close()"); |
| 805 | } |
| 806 | |
| 807 | /* Attach to the target that is already loaded and possibly running */ |
| 808 | static void |
| 809 | hms_attach (args, from_tty) |
| 810 | char *args; |
| 811 | int from_tty; |
| 812 | { |
| 813 | |
| 814 | DENTER("hms_attach()"); |
| 815 | |
| 816 | /* push_target(&hms_ops); /* This done in hms_open() */ |
| 817 | |
| 818 | mark_breakpoints_out (); |
| 819 | |
| 820 | /* Send the hms a kill. It is ok if it is not already running */ |
| 821 | #if 0 |
| 822 | fprintf(hms_stream, "K\r"); |
| 823 | expect_prompt(); /* Slurp the echo */ |
| 824 | #endif |
| 825 | /* We will get a task spawn event immediately. */ |
| 826 | init_wait_for_inferior (); |
| 827 | clear_proceed_status (); |
| 828 | stop_soon_quietly = 1; |
| 829 | wait_for_inferior (); |
| 830 | stop_soon_quietly = 0; |
| 831 | normal_stop (); |
| 832 | DEXIT("hms_attach()"); |
| 833 | } |
| 834 | |
| 835 | |
| 836 | /* Terminate the open connection to the remote debugger. |
| 837 | Use this when you want to detach and do something else |
| 838 | with your gdb. */ |
| 839 | void |
| 840 | hms_detach (args,from_tty) |
| 841 | char *args; |
| 842 | int from_tty; |
| 843 | { |
| 844 | DENTER("hms_detach()"); |
| 845 | if (OPEN(hms_desc)) { /* Send it on its way (tell it to continue) */ |
| 846 | hms_clear_breakpoints(); |
| 847 | #if 0 |
| 848 | fprintf(hms_stream,"G\r"); |
| 849 | #endif |
| 850 | } |
| 851 | |
| 852 | pop_target(); /* calls hms_close to do the real work */ |
| 853 | if (from_tty) |
| 854 | printf_filtered ("Ending remote %s debugging\n", target_shortname); |
| 855 | DEXIT("hms_detach()"); |
| 856 | } |
| 857 | |
| 858 | /* Tell the remote machine to resume. */ |
| 859 | |
| 860 | void |
| 861 | hms_resume (step, sig) |
| 862 | int step, sig; |
| 863 | { |
| 864 | DENTER("hms_resume()"); |
| 865 | dcache_flush(); |
| 866 | |
| 867 | if (step) |
| 868 | { |
| 869 | hms_write_cr("s"); |
| 870 | |
| 871 | hms_write("\003",1); |
| 872 | expect_prompt(); |
| 873 | /* Force the next hms_wait to return a trap. Not doing anything |
| 874 | about I/O from the target means that the user has to type |
| 875 | "continue" to see any. FIXME, this should be fixed. */ |
| 876 | need_artificial_trap = 1; |
| 877 | } |
| 878 | else |
| 879 | { |
| 880 | hms_write_cr("g"); |
| 881 | expect("g\r"); |
| 882 | } |
| 883 | DEXIT("hms_resume()"); |
| 884 | } |
| 885 | |
| 886 | /* Wait until the remote machine stops, then return, |
| 887 | storing status in STATUS just as `wait' would. */ |
| 888 | |
| 889 | int |
| 890 | hms_wait (status) |
| 891 | WAITTYPE *status; |
| 892 | { |
| 893 | /* Strings to look for. '?' means match any single character. |
| 894 | Note that with the algorithm we use, the initial character |
| 895 | of the string cannot recur in the string, or we will not |
| 896 | find some cases of the string in the input. */ |
| 897 | |
| 898 | static char bpt[] = "At breakpoint:\r"; |
| 899 | /* It would be tempting to look for "\n[__exit + 0x8]\n" |
| 900 | but that requires loading symbols with "yc i" and even if |
| 901 | we did do that we don't know that the file has symbols. */ |
| 902 | static char exitmsg[] = "HMS>"; |
| 903 | char *bp = bpt; |
| 904 | char *ep = exitmsg; |
| 905 | |
| 906 | /* Large enough for either sizeof (bpt) or sizeof (exitmsg) chars. */ |
| 907 | char swallowed[50]; |
| 908 | /* Current position in swallowed. */ |
| 909 | char *swallowed_p = swallowed; |
| 910 | |
| 911 | int ch; |
| 912 | int ch_handled; |
| 913 | int old_timeout = timeout; |
| 914 | int old_immediate_quit = immediate_quit; |
| 915 | int swallowed_cr = 0; |
| 916 | |
| 917 | DENTER("hms_wait()"); |
| 918 | |
| 919 | WSETEXIT ((*status), 0); |
| 920 | |
| 921 | if (need_artificial_trap != 0) |
| 922 | { |
| 923 | WSETSTOP ((*status), SIGTRAP); |
| 924 | need_artificial_trap--; |
| 925 | return 0; |
| 926 | } |
| 927 | |
| 928 | timeout = 0; /* Don't time out -- user program is running. */ |
| 929 | immediate_quit = 1; /* Helps ability to QUIT */ |
| 930 | while (1) { |
| 931 | QUIT; /* Let user quit and leave process running */ |
| 932 | ch_handled = 0; |
| 933 | ch = readchar (); |
| 934 | if (ch == *bp) { |
| 935 | bp++; |
| 936 | if (*bp == '\0') |
| 937 | break; |
| 938 | ch_handled = 1; |
| 939 | |
| 940 | *swallowed_p++ = ch; |
| 941 | } else |
| 942 | bp = bpt; |
| 943 | if (ch == *ep || *ep == '?') { |
| 944 | ep++; |
| 945 | if (*ep == '\0') |
| 946 | break; |
| 947 | |
| 948 | if (!ch_handled) |
| 949 | *swallowed_p++ = ch; |
| 950 | ch_handled = 1; |
| 951 | } else |
| 952 | ep = exitmsg; |
| 953 | if (!ch_handled) { |
| 954 | char *p; |
| 955 | /* Print out any characters which have been swallowed. */ |
| 956 | for (p = swallowed; p < swallowed_p; ++p) |
| 957 | putc (*p, stdout); |
| 958 | swallowed_p = swallowed; |
| 959 | |
| 960 | |
| 961 | if ((ch != '\r' && ch != '\n') || swallowed_cr>10) |
| 962 | { |
| 963 | putc (ch, stdout); |
| 964 | swallowed_cr = 10; |
| 965 | } |
| 966 | swallowed_cr ++; |
| 967 | |
| 968 | } |
| 969 | } |
| 970 | if (*bp== '\0') |
| 971 | { |
| 972 | WSETSTOP ((*status), SIGTRAP); |
| 973 | expect_prompt(); |
| 974 | } |
| 975 | else |
| 976 | { |
| 977 | WSETEXIT ((*status), 0); |
| 978 | } |
| 979 | |
| 980 | timeout = old_timeout; |
| 981 | immediate_quit = old_immediate_quit; |
| 982 | DEXIT("hms_wait()"); |
| 983 | return 0; |
| 984 | } |
| 985 | |
| 986 | /* Return the name of register number REGNO |
| 987 | in the form input and output by hms. |
| 988 | |
| 989 | Returns a pointer to a static buffer containing the answer. */ |
| 990 | static char * |
| 991 | get_reg_name (regno) |
| 992 | int regno; |
| 993 | { |
| 994 | static char *rn[NUM_REGS]= REGISTER_NAMES; |
| 995 | |
| 996 | |
| 997 | return rn[regno]; |
| 998 | |
| 999 | } |
| 1000 | |
| 1001 | /* Read the remote registers. */ |
| 1002 | static int gethex(length, start, ok) |
| 1003 | unsigned int length; |
| 1004 | char *start; |
| 1005 | int *ok; |
| 1006 | { |
| 1007 | int result = 0; |
| 1008 | while (length--) |
| 1009 | { |
| 1010 | result <<= 4 ; |
| 1011 | if (*start >='a' && *start <= 'f') |
| 1012 | { |
| 1013 | result += *start - 'a' + 10; |
| 1014 | } |
| 1015 | else if (*start >='A' && *start <= 'F') |
| 1016 | { |
| 1017 | result += *start - 'A' + 10; |
| 1018 | } |
| 1019 | else if (*start >='0' && *start <= '9') |
| 1020 | { |
| 1021 | result += *start - '0' ; |
| 1022 | } |
| 1023 | else *ok = 0; |
| 1024 | start++; |
| 1025 | |
| 1026 | } |
| 1027 | return result; |
| 1028 | } |
| 1029 | static int |
| 1030 | timed_read(buf, n, timeout) |
| 1031 | char *buf; |
| 1032 | |
| 1033 | { |
| 1034 | int i; |
| 1035 | char c; |
| 1036 | i = 0; |
| 1037 | while (i < n) |
| 1038 | { |
| 1039 | c = readchar(); |
| 1040 | |
| 1041 | if (c == 0) return i; |
| 1042 | buf[i] = c; |
| 1043 | i++; |
| 1044 | |
| 1045 | } |
| 1046 | return i; |
| 1047 | |
| 1048 | } |
| 1049 | hms_write(a,l) |
| 1050 | char *a; |
| 1051 | { |
| 1052 | int i; |
| 1053 | write(hms_desc,a,l); |
| 1054 | if (!quiet) |
| 1055 | for (i = 0; i < l ; i++) |
| 1056 | { |
| 1057 | printf("%c", a[i]); |
| 1058 | } |
| 1059 | } |
| 1060 | |
| 1061 | hms_write_cr(s) |
| 1062 | char *s; |
| 1063 | { |
| 1064 | hms_write( s, strlen(s)); |
| 1065 | hms_write("\r",1); |
| 1066 | } |
| 1067 | |
| 1068 | static void |
| 1069 | hms_fetch_registers () |
| 1070 | { |
| 1071 | #define REGREPLY_SIZE 79 |
| 1072 | char linebuf[REGREPLY_SIZE+1]; |
| 1073 | int i; |
| 1074 | int s ; |
| 1075 | int gottok; |
| 1076 | |
| 1077 | REGISTER_TYPE reg[NUM_REGS]; |
| 1078 | int foo[8]; |
| 1079 | check_open(); |
| 1080 | |
| 1081 | do |
| 1082 | { |
| 1083 | |
| 1084 | hms_write_cr("r"); |
| 1085 | s = timed_read(linebuf, REGREPLY_SIZE, 1); |
| 1086 | |
| 1087 | |
| 1088 | linebuf[REGREPLY_SIZE] = 0; |
| 1089 | gottok = 0; |
| 1090 | if (linebuf[0] == 'r' && |
| 1091 | linebuf[1] == '\r' && |
| 1092 | linebuf[2] == '\n' && |
| 1093 | linebuf[3] == 'P' && |
| 1094 | linebuf[4] == 'C' && |
| 1095 | linebuf[5] == '=' && |
| 1096 | linebuf[75] == 'H' && |
| 1097 | linebuf[76] == 'M' && |
| 1098 | linebuf[77] == 'S') |
| 1099 | { |
| 1100 | /* |
| 1101 | PC=XXXX CCR=XX:XXXXXXXX R0-R7= XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX |
| 1102 | 5436789012345678901234567890123456789012345678901234567890123456789012 |
| 1103 | 0 1 2 3 4 5 6 |
| 1104 | */ |
| 1105 | gottok = 1; |
| 1106 | |
| 1107 | reg[PC_REGNUM] = gethex(4,linebuf+6, &gottok); |
| 1108 | reg[CCR_REGNUM] = gethex(2,linebuf+15, &gottok); |
| 1109 | for (i = 0; i < 8; i++) |
| 1110 | { |
| 1111 | reg[i] = gethex(4, linebuf+34+5*i, &gottok); |
| 1112 | } |
| 1113 | } |
| 1114 | } |
| 1115 | while (!gottok); |
| 1116 | for (i = 0; i < NUM_REGS; i++) |
| 1117 | { |
| 1118 | supply_register (i, reg+i); |
| 1119 | } |
| 1120 | } |
| 1121 | |
| 1122 | /* Fetch register REGNO, or all registers if REGNO is -1. |
| 1123 | */ |
| 1124 | static void |
| 1125 | hms_fetch_register (regno) |
| 1126 | int regno; |
| 1127 | { |
| 1128 | |
| 1129 | hms_fetch_registers (); |
| 1130 | |
| 1131 | } |
| 1132 | |
| 1133 | /* Store the remote registers from the contents of the block REGS. */ |
| 1134 | |
| 1135 | static int |
| 1136 | hms_store_registers () |
| 1137 | { |
| 1138 | int i; |
| 1139 | for (i = 0; i < NUM_REGS; i++) |
| 1140 | hms_store_register(i); |
| 1141 | return 0; |
| 1142 | |
| 1143 | } |
| 1144 | |
| 1145 | /* Store register REGNO, or all if REGNO == -1. |
| 1146 | Return errno value. */ |
| 1147 | int |
| 1148 | hms_store_register (regno) |
| 1149 | int regno; |
| 1150 | { |
| 1151 | |
| 1152 | /* printf("hms_store_register() called.\n"); fflush(stdout); /* */ |
| 1153 | if (regno == -1) |
| 1154 | hms_store_registers (); |
| 1155 | else |
| 1156 | { |
| 1157 | char *name = get_reg_name (regno); |
| 1158 | char buffer[100]; |
| 1159 | sprintf(buffer,"r %s=%x", name, read_register(regno)); |
| 1160 | hms_write_cr(buffer); |
| 1161 | expect_prompt(); |
| 1162 | } |
| 1163 | |
| 1164 | DEXIT("hms_store_registers()"); |
| 1165 | return 0; |
| 1166 | } |
| 1167 | |
| 1168 | /* Get ready to modify the registers array. On machines which store |
| 1169 | individual registers, this doesn't need to do anything. On machines |
| 1170 | which store all the registers in one fell swoop, this makes sure |
| 1171 | that registers contains all the registers from the program being |
| 1172 | debugged. */ |
| 1173 | |
| 1174 | void |
| 1175 | hms_prepare_to_store () |
| 1176 | { |
| 1177 | /* Do nothing, since we can store individual regs */ |
| 1178 | } |
| 1179 | |
| 1180 | static CORE_ADDR |
| 1181 | translate_addr(addr) |
| 1182 | CORE_ADDR addr; |
| 1183 | { |
| 1184 | |
| 1185 | return(addr); |
| 1186 | |
| 1187 | } |
| 1188 | |
| 1189 | /* Read a word from remote address ADDR and return it. |
| 1190 | * This goes through the data cache. |
| 1191 | */ |
| 1192 | int |
| 1193 | hms_fetch_word (addr) |
| 1194 | CORE_ADDR addr; |
| 1195 | { |
| 1196 | return dcache_fetch (addr); |
| 1197 | } |
| 1198 | |
| 1199 | /* Write a word WORD into remote address ADDR. |
| 1200 | This goes through the data cache. */ |
| 1201 | |
| 1202 | void |
| 1203 | hms_store_word (addr, word) |
| 1204 | CORE_ADDR addr; |
| 1205 | int word; |
| 1206 | { |
| 1207 | dcache_poke (addr, word); |
| 1208 | } |
| 1209 | |
| 1210 | int |
| 1211 | hms_xfer_inferior_memory(memaddr, myaddr, len, write, target) |
| 1212 | CORE_ADDR memaddr; |
| 1213 | char *myaddr; |
| 1214 | int len; |
| 1215 | int write; |
| 1216 | struct target_ops *target; /* ignored */ |
| 1217 | { |
| 1218 | register int i; |
| 1219 | /* Round starting address down to longword boundary. */ |
| 1220 | register CORE_ADDR addr; |
| 1221 | /* Round ending address up; get number of longwords that makes. */ |
| 1222 | register int count; |
| 1223 | /* Allocate buffer of that many longwords. */ |
| 1224 | register int *buffer ; |
| 1225 | |
| 1226 | memaddr &= 0xffff; |
| 1227 | addr = memaddr & - sizeof (int); |
| 1228 | count = (((memaddr + len) - addr) + sizeof (int) - 1) / sizeof (int); |
| 1229 | |
| 1230 | |
| 1231 | buffer = (int *)alloca (count * sizeof (int)); |
| 1232 | if (write) |
| 1233 | { |
| 1234 | /* Fill start and end extra bytes of buffer with existing memory data. */ |
| 1235 | |
| 1236 | if (addr != memaddr || len < (int)sizeof (int)) { |
| 1237 | /* Need part of initial word -- fetch it. */ |
| 1238 | buffer[0] = hms_fetch_word (addr); |
| 1239 | } |
| 1240 | |
| 1241 | if (count > 1) /* FIXME, avoid if even boundary */ |
| 1242 | { |
| 1243 | buffer[count - 1] |
| 1244 | = hms_fetch_word (addr + (count - 1) * sizeof (int)); |
| 1245 | } |
| 1246 | |
| 1247 | /* Copy data to be written over corresponding part of buffer */ |
| 1248 | |
| 1249 | bcopy (myaddr, (char *) buffer + (memaddr & (sizeof (int) - 1)), len); |
| 1250 | |
| 1251 | /* Write the entire buffer. */ |
| 1252 | |
| 1253 | for (i = 0; i < count; i++, addr += sizeof (int)) |
| 1254 | { |
| 1255 | errno = 0; |
| 1256 | hms_store_word (addr, buffer[i]); |
| 1257 | if (errno) |
| 1258 | { |
| 1259 | |
| 1260 | return 0; |
| 1261 | } |
| 1262 | |
| 1263 | } |
| 1264 | } |
| 1265 | else |
| 1266 | { |
| 1267 | /* Read all the longwords */ |
| 1268 | for (i = 0; i < count; i++, addr += sizeof (int)) |
| 1269 | { |
| 1270 | errno = 0; |
| 1271 | buffer[i] = hms_fetch_word (addr); |
| 1272 | if (errno) |
| 1273 | { |
| 1274 | return 0; |
| 1275 | } |
| 1276 | QUIT; |
| 1277 | } |
| 1278 | |
| 1279 | /* Copy appropriate bytes out of the buffer. */ |
| 1280 | bcopy ((char *) buffer + (memaddr & (sizeof (int) - 1)), myaddr, len); |
| 1281 | } |
| 1282 | |
| 1283 | |
| 1284 | return len; |
| 1285 | } |
| 1286 | |
| 1287 | #if 0 |
| 1288 | int |
| 1289 | hms_xfer_inferior_memory (memaddr, myaddr, len, write) |
| 1290 | CORE_ADDR memaddr; |
| 1291 | char *myaddr; |
| 1292 | int len; |
| 1293 | int write; |
| 1294 | { |
| 1295 | memaddr &= 0xffff; |
| 1296 | if (write) |
| 1297 | return hms_write_inferior_memory (memaddr, myaddr, len); |
| 1298 | else |
| 1299 | return hms_read_inferior_memory (memaddr, myaddr, len); |
| 1300 | |
| 1301 | } |
| 1302 | #endif |
| 1303 | |
| 1304 | int |
| 1305 | hms_write_inferior_memory (memaddr, myaddr, len) |
| 1306 | CORE_ADDR memaddr; |
| 1307 | char *myaddr; |
| 1308 | int len; |
| 1309 | { |
| 1310 | |
| 1311 | bfd *abfd = bfd_openw(dev_name, "srec"); |
| 1312 | asection *a; |
| 1313 | |
| 1314 | bfd_set_format(abfd, bfd_object); |
| 1315 | a = bfd_make_section(abfd, ".text"); |
| 1316 | a->vma = memaddr; |
| 1317 | a->_raw_size = len; |
| 1318 | a->flags = SEC_LOAD | SEC_HAS_CONTENTS; |
| 1319 | hms_write_cr("tl"); /* tell hms here comes the recs */ |
| 1320 | bfd_set_section_contents(abfd, a, myaddr, 0, len); |
| 1321 | bfd_close(abfd); |
| 1322 | |
| 1323 | expect_prompt(); |
| 1324 | } |
| 1325 | |
| 1326 | void |
| 1327 | hms_files_info () |
| 1328 | { |
| 1329 | printf_filtered("\tAttached to %s at %d baud and running program %s\n", |
| 1330 | dev_name, baudrate, bfd_get_filename(exec_bfd)); |
| 1331 | printf_filtered("\ton an H8/300 processor.\n"); |
| 1332 | } |
| 1333 | |
| 1334 | /* Copy LEN bytes of data from debugger memory at MYADDR |
| 1335 | to inferior's memory at MEMADDR. Returns errno value. |
| 1336 | * sb/sh instructions don't work on unaligned addresses, when TU=1. |
| 1337 | */ |
| 1338 | |
| 1339 | |
| 1340 | /* Read LEN bytes from inferior memory at MEMADDR. Put the result |
| 1341 | at debugger address MYADDR. Returns errno value. */ |
| 1342 | int |
| 1343 | hms_read_inferior_memory(memaddr, myaddr, len) |
| 1344 | CORE_ADDR memaddr; |
| 1345 | char *myaddr; |
| 1346 | int len; |
| 1347 | { |
| 1348 | /* Align to nearest low 16 bits */ |
| 1349 | int i; |
| 1350 | |
| 1351 | #if 0 |
| 1352 | CORE_ADDR start = memaddr & ~0xf; |
| 1353 | CORE_ADDR end = ((memaddr + len +16) & ~0xf) -1; |
| 1354 | #endif |
| 1355 | CORE_ADDR start = memaddr; |
| 1356 | CORE_ADDR end = memaddr + len -1; |
| 1357 | |
| 1358 | int ok =1; |
| 1359 | |
| 1360 | /* |
| 1361 | AAAA: XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX '................' |
| 1362 | 012345678901234567890123456789012345678901234567890123456789012345 |
| 1363 | 0 1 2 3 4 5 6 |
| 1364 | */ |
| 1365 | char buffer[66]; |
| 1366 | if (memaddr & 0xf) abort(); |
| 1367 | if (len != 16) abort(); |
| 1368 | |
| 1369 | sprintf(buffer, "m %4x %4x", start, end); |
| 1370 | hms_write_cr(buffer); |
| 1371 | /* drop the echo and newline*/ |
| 1372 | for (i = 0; i < 13; i++) |
| 1373 | readchar(); |
| 1374 | |
| 1375 | |
| 1376 | |
| 1377 | /* Grab the lines as they come out and fill the area */ |
| 1378 | /* Skip over cr */ |
| 1379 | while(1) |
| 1380 | { |
| 1381 | int p; |
| 1382 | int i; |
| 1383 | int addr; |
| 1384 | size_t idx; |
| 1385 | |
| 1386 | char byte[16]; |
| 1387 | buffer[0] = readchar(); |
| 1388 | if (buffer[0] == 'M') |
| 1389 | break; |
| 1390 | for (i = 1; i < 66; i++) |
| 1391 | buffer[i] = readchar(); |
| 1392 | |
| 1393 | /* Now parse the line */ |
| 1394 | |
| 1395 | addr = gethex(4, buffer, &ok); |
| 1396 | idx = 6; |
| 1397 | for (p = 0; p < 16; p+=2) |
| 1398 | { |
| 1399 | byte[p] = gethex(2, buffer + idx, &ok); |
| 1400 | byte[p+1] = gethex(2, buffer+ idx + 2, &ok); |
| 1401 | idx+=5; |
| 1402 | |
| 1403 | } |
| 1404 | |
| 1405 | |
| 1406 | for (p = 0; p<16;p++) |
| 1407 | { |
| 1408 | if (addr + p >= memaddr && |
| 1409 | addr + p < memaddr + len) |
| 1410 | { |
| 1411 | myaddr[ (addr + p)-memaddr] = byte[p]; |
| 1412 | |
| 1413 | } |
| 1414 | |
| 1415 | } |
| 1416 | } |
| 1417 | |
| 1418 | |
| 1419 | |
| 1420 | hms_write("\003",1); |
| 1421 | expect_prompt(); |
| 1422 | |
| 1423 | |
| 1424 | |
| 1425 | |
| 1426 | return len; |
| 1427 | |
| 1428 | } |
| 1429 | |
| 1430 | /* This routine is run as a hook, just before the main command loop is |
| 1431 | entered. If gdb is configured for the H8, but has not had its |
| 1432 | target specified yet, this will loop prompting the user to do so. |
| 1433 | */ |
| 1434 | |
| 1435 | hms_before_main_loop () |
| 1436 | { |
| 1437 | char ttyname[100]; |
| 1438 | char *p, *p2; |
| 1439 | extern FILE *instream; |
| 1440 | extern jmp_buf to_top_level; |
| 1441 | |
| 1442 | push_target (&hms_ops); |
| 1443 | #if 0 |
| 1444 | |
| 1445 | while (current_target != &hms_ops) { |
| 1446 | /* remote tty not specified yet */ |
| 1447 | if ( instream == stdin ){ |
| 1448 | printf("\nEnter device and filename, or \"quit\" to quit: "); |
| 1449 | fflush( stdout ); |
| 1450 | } |
| 1451 | fgets( ttyname, sizeof(ttyname)-1, stdin ); |
| 1452 | |
| 1453 | if ( !strcmp("quit", ttyname) ){ |
| 1454 | exit(1); |
| 1455 | } |
| 1456 | |
| 1457 | hms_open( ttyname, 1 ); |
| 1458 | |
| 1459 | /* Now that we have a tty open for talking to the remote machine, |
| 1460 | download the executable file if one was specified. */ |
| 1461 | if ( !setjmp(to_top_level) && exec_bfd ) { |
| 1462 | target_load (bfd_get_filename (exec_bfd), 1); |
| 1463 | } |
| 1464 | } |
| 1465 | #endif |
| 1466 | } |
| 1467 | |
| 1468 | |
| 1469 | #define MAX_BREAKS 16 |
| 1470 | static int num_brkpts=0; |
| 1471 | static int |
| 1472 | hms_insert_breakpoint(addr, save) |
| 1473 | CORE_ADDR addr; |
| 1474 | char *save; /* Throw away, let hms save instructions */ |
| 1475 | { |
| 1476 | |
| 1477 | DENTER("hms_insert_breakpoint()"); |
| 1478 | check_open(); |
| 1479 | |
| 1480 | if (num_brkpts < MAX_BREAKS) { |
| 1481 | char buffer[100]; |
| 1482 | num_brkpts++; |
| 1483 | sprintf(buffer,"b %x", addr & 0xffff); |
| 1484 | hms_write_cr(buffer); |
| 1485 | expect_prompt (); |
| 1486 | DEXIT("hms_insert_breakpoint() success"); |
| 1487 | return(0); /* Success */ |
| 1488 | } else { |
| 1489 | fprintf_filtered(stderr, |
| 1490 | "Too many break points, break point not installed\n"); |
| 1491 | DEXIT("hms_insert_breakpoint() failure"); |
| 1492 | return(1); /* Failure */ |
| 1493 | } |
| 1494 | |
| 1495 | |
| 1496 | } |
| 1497 | static int |
| 1498 | hms_remove_breakpoint(addr, save) |
| 1499 | CORE_ADDR addr; |
| 1500 | char *save; /* Throw away, let hms save instructions */ |
| 1501 | { |
| 1502 | DENTER("hms_remove_breakpoint()"); |
| 1503 | if (num_brkpts > 0) { |
| 1504 | char buffer[100]; |
| 1505 | |
| 1506 | num_brkpts--; |
| 1507 | sprintf(buffer,"b - %x", addr & 0xffff); |
| 1508 | hms_write_cr(buffer); |
| 1509 | expect_prompt(); |
| 1510 | |
| 1511 | } |
| 1512 | DEXIT("hms_remove_breakpoint()"); |
| 1513 | return(0); |
| 1514 | } |
| 1515 | |
| 1516 | /* Clear the hmss notion of what the break points are */ |
| 1517 | static int |
| 1518 | hms_clear_breakpoints() |
| 1519 | { |
| 1520 | |
| 1521 | DENTER("hms_clear_breakpoint()"); |
| 1522 | if (OPEN(hms_desc)) { |
| 1523 | hms_write_cr("b -"); |
| 1524 | expect_prompt (); |
| 1525 | } |
| 1526 | num_brkpts = 0; |
| 1527 | |
| 1528 | DEXIT("hms_clear_breakpoint()"); |
| 1529 | } |
| 1530 | static void |
| 1531 | hms_mourn() |
| 1532 | { |
| 1533 | DENTER("hms_mourn()"); |
| 1534 | hms_clear_breakpoints(); |
| 1535 | /* pop_target (); /* Pop back to no-child state */ |
| 1536 | generic_mourn_inferior (); |
| 1537 | DEXIT("hms_mourn()"); |
| 1538 | } |
| 1539 | |
| 1540 | /* Display everthing we read in from the hms until we match/see the |
| 1541 | * specified string |
| 1542 | */ |
| 1543 | static int |
| 1544 | display_until(str) |
| 1545 | char *str; |
| 1546 | { |
| 1547 | int i=0,j,c; |
| 1548 | |
| 1549 | while (c=readchar()) { |
| 1550 | if (c==str[i]) { |
| 1551 | i++; |
| 1552 | if (i == strlen(str)) return; |
| 1553 | } else { |
| 1554 | if (i) { |
| 1555 | for (j=0 ; j<i ; j++) /* Put everthing we matched */ |
| 1556 | putchar(str[j]); |
| 1557 | i=0; |
| 1558 | } |
| 1559 | putchar(c); |
| 1560 | } |
| 1561 | } |
| 1562 | |
| 1563 | } |
| 1564 | |
| 1565 | |
| 1566 | /* Put a command string, in args, out to the hms. The hms is assumed to |
| 1567 | be in raw mode, all writing/reading done through hms_desc. |
| 1568 | Ouput from the hms is placed on the users terminal until the |
| 1569 | prompt from the hms is seen. |
| 1570 | FIXME: Can't handle commands that take input. */ |
| 1571 | |
| 1572 | void |
| 1573 | hms_com (args, fromtty) |
| 1574 | char *args; |
| 1575 | int fromtty; |
| 1576 | { |
| 1577 | check_open(); |
| 1578 | |
| 1579 | if (!args) return; |
| 1580 | |
| 1581 | /* Clear all input so only command relative output is displayed */ |
| 1582 | |
| 1583 | |
| 1584 | hms_write_cr(args); |
| 1585 | hms_write("\030",1); |
| 1586 | expect_prompt(); |
| 1587 | |
| 1588 | } |
| 1589 | |
| 1590 | /* Define the target subroutine names */ |
| 1591 | |
| 1592 | struct target_ops hms_ops = { |
| 1593 | "hms", "Remote HMS monitor", |
| 1594 | "Use the H8 evaluation board running the HMS monitor connected\n\ |
| 1595 | by a serial line.", |
| 1596 | |
| 1597 | hms_open, hms_close, |
| 1598 | hms_attach, hms_detach, hms_resume, hms_wait, |
| 1599 | hms_fetch_register, hms_store_register, |
| 1600 | hms_prepare_to_store, 0, 0, /* conv_to, conv_from */ |
| 1601 | hms_xfer_inferior_memory, |
| 1602 | hms_files_info, |
| 1603 | hms_insert_breakpoint, hms_remove_breakpoint, /* Breakpoints */ |
| 1604 | 0, 0, 0, 0, 0, /* Terminal handling */ |
| 1605 | hms_kill, /* FIXME, kill */ |
| 1606 | hms_load, |
| 1607 | call_function_by_hand, |
| 1608 | 0, /* lookup_symbol */ |
| 1609 | hms_create_inferior, /* create_inferior */ |
| 1610 | hms_mourn, /* mourn_inferior FIXME */ |
| 1611 | process_stratum, 0, /* next */ |
| 1612 | 1, 1, 1, 1, 1, /* all mem, mem, stack, regs, exec */ |
| 1613 | 0,0, /* Section pointers */ |
| 1614 | OPS_MAGIC, /* Always the last thing */ |
| 1615 | }; |
| 1616 | |
| 1617 | |
| 1618 | hms_quiet() |
| 1619 | { |
| 1620 | quiet = ! quiet; |
| 1621 | } |
| 1622 | |
| 1623 | hms_device(s) |
| 1624 | char *s; |
| 1625 | { |
| 1626 | if (s) { |
| 1627 | dev_name = get_word(&s); |
| 1628 | } |
| 1629 | } |
| 1630 | |
| 1631 | static hms_speed(s) |
| 1632 | char *s; |
| 1633 | { |
| 1634 | if (s) |
| 1635 | { |
| 1636 | char buffer[100]; |
| 1637 | int newrate = atoi(s); |
| 1638 | int which = 0; |
| 1639 | while (baudtab[which].rate != newrate) |
| 1640 | { |
| 1641 | if (baudtab[which].rate == -1) |
| 1642 | { |
| 1643 | error("Can't use %d baud\n", newrate); |
| 1644 | } |
| 1645 | which++; |
| 1646 | } |
| 1647 | |
| 1648 | |
| 1649 | |
| 1650 | printf_filtered("Checking target is in sync\n"); |
| 1651 | |
| 1652 | |
| 1653 | get_baudrate_right(); |
| 1654 | baudrate = newrate; |
| 1655 | printf_filtered("Sending commands to set target to %d\n", |
| 1656 | baudrate); |
| 1657 | |
| 1658 | sprintf(buffer, "tm %d. N 8 1", baudrate); |
| 1659 | hms_write(buffer); |
| 1660 | } |
| 1661 | } |
| 1662 | |
| 1663 | /***********************************************************************/ |
| 1664 | |
| 1665 | void |
| 1666 | _initialize_remote_hms () |
| 1667 | { |
| 1668 | add_target (&hms_ops); |
| 1669 | add_com ("hms <command>", class_obscure, hms_com, |
| 1670 | "Send a command to the HMS monitor."); |
| 1671 | add_com ("snoop", class_obscure, hms_quiet, |
| 1672 | "Show what commands are going to the monitor"); |
| 1673 | add_com ("device", class_obscure, hms_device, |
| 1674 | "Set the terminal line for HMS communications"); |
| 1675 | |
| 1676 | add_com ("speed", class_obscure, hms_speed, |
| 1677 | "Set the terminal line speed for HMS communications"); |
| 1678 | |
| 1679 | } |
| 1680 | |
| 1681 | |