| 1 | /* Remote debugging interface for AMD 290*0 Adapt Monitor Version 2.1d18. |
| 2 | Copyright 1990, 1991, 1992 Free Software Foundation, Inc. |
| 3 | Contributed by David Wood at New York University (wood@lab.ultra.nyu.edu). |
| 4 | Adapted from work done at Cygnus Support in remote-eb.c. |
| 5 | |
| 6 | This file is part of GDB. |
| 7 | |
| 8 | This program is free software; you can redistribute it and/or modify |
| 9 | it under the terms of the GNU General Public License as published by |
| 10 | the Free Software Foundation; either version 2 of the License, or |
| 11 | (at your option) any later version. |
| 12 | |
| 13 | This program is distributed in the hope that it will be useful, |
| 14 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | GNU General Public License for more details. |
| 17 | |
| 18 | You should have received a copy of the GNU General Public License |
| 19 | along with this program; if not, write to the Free Software |
| 20 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ |
| 21 | |
| 22 | /* This is like remote.c but is for an esoteric situation-- |
| 23 | having a 29k board attached to an Adapt inline monitor. |
| 24 | The monitor is connected via serial line to a unix machine |
| 25 | running gdb. |
| 26 | |
| 27 | 3/91 - developed on Sun3 OS 4.1, by David Wood |
| 28 | o - I can't get binary coff to load. |
| 29 | o - I can't get 19200 baud rate to work. |
| 30 | 7/91 o - Freeze mode tracing can be done on a 29050. */ |
| 31 | |
| 32 | #include "defs.h" |
| 33 | #include <string.h> |
| 34 | #include "inferior.h" |
| 35 | #include "wait.h" |
| 36 | #include "value.h" |
| 37 | #include <ctype.h> |
| 38 | #include <fcntl.h> |
| 39 | #include <signal.h> |
| 40 | #include <errno.h> |
| 41 | #include "terminal.h" |
| 42 | #include "target.h" |
| 43 | #include "gdbcore.h" |
| 44 | |
| 45 | /* External data declarations */ |
| 46 | extern int stop_soon_quietly; /* for wait_for_inferior */ |
| 47 | |
| 48 | /* Forward data declarations */ |
| 49 | extern struct target_ops adapt_ops; /* Forward declaration */ |
| 50 | |
| 51 | /* Forward function declarations */ |
| 52 | static void adapt_fetch_registers (); |
| 53 | static void adapt_store_registers (); |
| 54 | static void adapt_close (); |
| 55 | static int adapt_clear_breakpoints(); |
| 56 | |
| 57 | /* |
| 58 | * Processor types. It is assumed that the adapt has the correct |
| 59 | * ROM for the given processor. |
| 60 | */ |
| 61 | #define TYPE_UNKNOWN 0 |
| 62 | #define TYPE_A29000 1 |
| 63 | #define TYPE_A29030 2 |
| 64 | #define TYPE_A29050 3 |
| 65 | static char *processor_name[] = { "Unknown", "A29000", "A29030", "A29050" }; |
| 66 | static int processor_type=TYPE_UNKNOWN; |
| 67 | |
| 68 | #define FREEZE_MODE (read_register(CPS_REGNUM) && 0x400) |
| 69 | #define USE_SHADOW_PC ((processor_type == TYPE_A29050) && FREEZE_MODE) |
| 70 | |
| 71 | /* Can't seem to get binary coff working */ |
| 72 | #define ASCII_COFF /* Adapt will be downloaded with ascii coff */ |
| 73 | |
| 74 | #define LOG_FILE "adapt.log" |
| 75 | #if defined (LOG_FILE) |
| 76 | FILE *log_file=NULL; |
| 77 | #endif |
| 78 | |
| 79 | static int timeout = 5; |
| 80 | static char *dev_name; |
| 81 | |
| 82 | /* Descriptor for I/O to remote machine. Initialize it to -1 so that |
| 83 | adapt_open knows that we don't have a file open when the program |
| 84 | starts. */ |
| 85 | int adapt_desc = -1; |
| 86 | |
| 87 | /* stream which is fdopen'd from adapt_desc. Only valid when |
| 88 | adapt_desc != -1. */ |
| 89 | FILE *adapt_stream; |
| 90 | |
| 91 | #define ON 1 |
| 92 | #define OFF 0 |
| 93 | static void |
| 94 | rawmode(desc, turnon) |
| 95 | int desc; |
| 96 | int turnon; |
| 97 | { |
| 98 | TERMINAL sg; |
| 99 | |
| 100 | if (desc < 0) |
| 101 | return; |
| 102 | |
| 103 | ioctl (desc, TIOCGETP, &sg); |
| 104 | |
| 105 | if (turnon) { |
| 106 | #ifdef HAVE_TERMIO |
| 107 | sg.c_lflag &= ~(ICANON); |
| 108 | #else |
| 109 | sg.sg_flags |= RAW; |
| 110 | #endif |
| 111 | } else { |
| 112 | #ifdef HAVE_TERMIO |
| 113 | sg.c_lflag |= ICANON; |
| 114 | #else |
| 115 | sg.sg_flags &= ~(RAW); |
| 116 | #endif |
| 117 | } |
| 118 | ioctl (desc, TIOCSETP, &sg); |
| 119 | } |
| 120 | |
| 121 | /* Suck up all the input from the adapt */ |
| 122 | slurp_input() |
| 123 | { |
| 124 | char buf[8]; |
| 125 | |
| 126 | #ifdef HAVE_TERMIO |
| 127 | /* termio does the timeout for us. */ |
| 128 | while (read (adapt_desc, buf, 8) > 0); |
| 129 | #else |
| 130 | alarm (timeout); |
| 131 | while (read (adapt_desc, buf, 8) > 0); |
| 132 | alarm (0); |
| 133 | #endif |
| 134 | } |
| 135 | |
| 136 | /* Read a character from the remote system, doing all the fancy |
| 137 | timeout stuff. */ |
| 138 | static int |
| 139 | readchar () |
| 140 | { |
| 141 | char buf; |
| 142 | |
| 143 | buf = '\0'; |
| 144 | #ifdef HAVE_TERMIO |
| 145 | /* termio does the timeout for us. */ |
| 146 | read (adapt_desc, &buf, 1); |
| 147 | #else |
| 148 | alarm (timeout); |
| 149 | if (read (adapt_desc, &buf, 1) < 0) |
| 150 | { |
| 151 | if (errno == EINTR) |
| 152 | error ("Timeout reading from remote system."); |
| 153 | else |
| 154 | perror_with_name ("remote"); |
| 155 | } |
| 156 | alarm (0); |
| 157 | #endif |
| 158 | |
| 159 | if (buf == '\0') |
| 160 | error ("Timeout reading from remote system."); |
| 161 | #if defined (LOG_FILE) |
| 162 | putc (buf & 0x7f, log_file); |
| 163 | #endif |
| 164 | return buf & 0x7f; |
| 165 | } |
| 166 | |
| 167 | /* Keep discarding input from the remote system, until STRING is found. |
| 168 | Let the user break out immediately. */ |
| 169 | static void |
| 170 | expect (string) |
| 171 | char *string; |
| 172 | { |
| 173 | char *p = string; |
| 174 | |
| 175 | fflush(adapt_stream); |
| 176 | immediate_quit = 1; |
| 177 | while (1) |
| 178 | { |
| 179 | if (readchar() == *p) |
| 180 | { |
| 181 | p++; |
| 182 | if (*p == '\0') |
| 183 | { |
| 184 | immediate_quit = 0; |
| 185 | return; |
| 186 | } |
| 187 | } |
| 188 | else |
| 189 | p = string; |
| 190 | } |
| 191 | } |
| 192 | |
| 193 | /* Keep discarding input until we see the adapt prompt. |
| 194 | |
| 195 | The convention for dealing with the prompt is that you |
| 196 | o give your command |
| 197 | o *then* wait for the prompt. |
| 198 | |
| 199 | Thus the last thing that a procedure does with the serial line |
| 200 | will be an expect_prompt(). Exception: adapt_resume does not |
| 201 | wait for the prompt, because the terminal is being handed over |
| 202 | to the inferior. However, the next thing which happens after that |
| 203 | is a adapt_wait which does wait for the prompt. |
| 204 | Note that this includes abnormal exit, e.g. error(). This is |
| 205 | necessary to prevent getting into states from which we can't |
| 206 | recover. */ |
| 207 | static void |
| 208 | expect_prompt () |
| 209 | { |
| 210 | #if defined (LOG_FILE) |
| 211 | /* This is a convenient place to do this. The idea is to do it often |
| 212 | enough that we never lose much data if we terminate abnormally. */ |
| 213 | fflush (log_file); |
| 214 | #endif |
| 215 | fflush(adapt_stream); |
| 216 | expect ("\n# "); |
| 217 | } |
| 218 | |
| 219 | /* Get a hex digit from the remote system & return its value. |
| 220 | If ignore_space is nonzero, ignore spaces (not newline, tab, etc). */ |
| 221 | static int |
| 222 | get_hex_digit (ignore_space) |
| 223 | int ignore_space; |
| 224 | { |
| 225 | int ch; |
| 226 | while (1) |
| 227 | { |
| 228 | ch = readchar (); |
| 229 | if (ch >= '0' && ch <= '9') |
| 230 | return ch - '0'; |
| 231 | else if (ch >= 'A' && ch <= 'F') |
| 232 | return ch - 'A' + 10; |
| 233 | else if (ch >= 'a' && ch <= 'f') |
| 234 | return ch - 'a' + 10; |
| 235 | else if (ch == ' ' && ignore_space) |
| 236 | ; |
| 237 | else |
| 238 | { |
| 239 | expect_prompt (); |
| 240 | error ("Invalid hex digit from remote system."); |
| 241 | } |
| 242 | } |
| 243 | } |
| 244 | |
| 245 | /* Get a byte from adapt_desc and put it in *BYT. Accept any number |
| 246 | leading spaces. */ |
| 247 | static void |
| 248 | get_hex_byte (byt) |
| 249 | char *byt; |
| 250 | { |
| 251 | int val; |
| 252 | |
| 253 | val = get_hex_digit (1) << 4; |
| 254 | val |= get_hex_digit (0); |
| 255 | *byt = val; |
| 256 | } |
| 257 | |
| 258 | /* Read a 32-bit hex word from the adapt, preceded by a space */ |
| 259 | static long |
| 260 | get_hex_word() |
| 261 | { |
| 262 | long val; |
| 263 | int j; |
| 264 | |
| 265 | val = 0; |
| 266 | for (j = 0; j < 8; j++) |
| 267 | val = (val << 4) + get_hex_digit (j == 0); |
| 268 | return val; |
| 269 | } |
| 270 | /* Get N 32-bit hex words from remote, each preceded by a space |
| 271 | and put them in registers starting at REGNO. */ |
| 272 | static void |
| 273 | get_hex_regs (n, regno) |
| 274 | int n; |
| 275 | int regno; |
| 276 | { |
| 277 | long val; |
| 278 | while (n--) { |
| 279 | val = get_hex_word(); |
| 280 | supply_register(regno++,(char *) &val); |
| 281 | } |
| 282 | } |
| 283 | /* Called when SIGALRM signal sent due to alarm() timeout. */ |
| 284 | #ifndef HAVE_TERMIO |
| 285 | |
| 286 | #ifndef __STDC__ |
| 287 | # ifndef volatile |
| 288 | # define volatile /**/ |
| 289 | # endif |
| 290 | #endif |
| 291 | volatile int n_alarms; |
| 292 | |
| 293 | void |
| 294 | adapt_timer () |
| 295 | { |
| 296 | #if 0 |
| 297 | if (kiodebug) |
| 298 | printf ("adapt_timer called\n"); |
| 299 | #endif |
| 300 | n_alarms++; |
| 301 | } |
| 302 | #endif |
| 303 | |
| 304 | /* malloc'd name of the program on the remote system. */ |
| 305 | static char *prog_name = NULL; |
| 306 | |
| 307 | /* Number of SIGTRAPs we need to simulate. That is, the next |
| 308 | NEED_ARTIFICIAL_TRAP calls to adapt_wait should just return |
| 309 | SIGTRAP without actually waiting for anything. */ |
| 310 | |
| 311 | static int need_artificial_trap = 0; |
| 312 | |
| 313 | void |
| 314 | adapt_kill(arg,from_tty) |
| 315 | char *arg; |
| 316 | int from_tty; |
| 317 | { |
| 318 | fprintf (adapt_stream, "K"); |
| 319 | fprintf (adapt_stream, "\r"); |
| 320 | expect_prompt (); |
| 321 | } |
| 322 | /* |
| 323 | * Download a file specified in 'args', to the adapt. |
| 324 | * FIXME: Assumes the file to download is a binary coff file. |
| 325 | */ |
| 326 | static void |
| 327 | adapt_load(args,fromtty) |
| 328 | char *args; |
| 329 | int fromtty; |
| 330 | { |
| 331 | FILE *fp; |
| 332 | int n; |
| 333 | char buffer[1024]; |
| 334 | |
| 335 | if (!adapt_stream) { |
| 336 | printf_filtered("Adapt not open. Use 'target' command to open adapt\n"); |
| 337 | return; |
| 338 | } |
| 339 | |
| 340 | /* OK, now read in the file. Y=read, C=COFF, T=dTe port |
| 341 | 0=start address. */ |
| 342 | |
| 343 | #ifdef ASCII_COFF /* Ascii coff */ |
| 344 | fprintf (adapt_stream, "YA T,0\r"); |
| 345 | fflush(adapt_stream); /* Just in case */ |
| 346 | /* FIXME: should check args for only 1 argument */ |
| 347 | sprintf(buffer,"cat %s | btoa > /tmp/#adapt-btoa",args); |
| 348 | system(buffer); |
| 349 | fp = fopen("/tmp/#adapt-btoa","r"); |
| 350 | rawmode(adapt_desc,OFF); |
| 351 | while (n=fread(buffer,1,1024,fp)) { |
| 352 | do { n -= write(adapt_desc,buffer,n); } while (n>0); |
| 353 | if (n<0) { perror("writing ascii coff"); break; } |
| 354 | } |
| 355 | fclose(fp); |
| 356 | rawmode(adapt_desc,ON); |
| 357 | system("rm /tmp/#adapt-btoa"); |
| 358 | #else /* Binary coff - can't get it to work .*/ |
| 359 | fprintf (adapt_stream, "YC T,0\r"); |
| 360 | fflush(adapt_stream); /* Just in case */ |
| 361 | if (!(fp = fopen(args,"r"))) { |
| 362 | printf_filtered("Can't open %s\n",args); |
| 363 | return; |
| 364 | } |
| 365 | while (n=fread(buffer,1,512,fp)) { |
| 366 | do { n -= write(adapt_desc,buffer,n); } while (n>0); |
| 367 | if (n<0) { perror("writing ascii coff"); break; } |
| 368 | } |
| 369 | fclose(fp); |
| 370 | #endif |
| 371 | expect_prompt (); /* Skip garbage that comes out */ |
| 372 | fprintf (adapt_stream, "\r"); |
| 373 | expect_prompt (); |
| 374 | } |
| 375 | |
| 376 | /* This is called not only when we first attach, but also when the |
| 377 | user types "run" after having attached. */ |
| 378 | void |
| 379 | adapt_create_inferior (execfile, args, env) |
| 380 | char *execfile; |
| 381 | char *args; |
| 382 | char **env; |
| 383 | { |
| 384 | int entry_pt; |
| 385 | |
| 386 | if (args && *args) |
| 387 | error ("Can't pass arguments to remote adapt process."); |
| 388 | |
| 389 | if (execfile == 0 || exec_bfd == 0) |
| 390 | error ("No exec file specified"); |
| 391 | |
| 392 | entry_pt = (int) bfd_get_start_address (exec_bfd); |
| 393 | |
| 394 | if (adapt_stream) { |
| 395 | adapt_kill(NULL,NULL); |
| 396 | adapt_clear_breakpoints(); |
| 397 | init_wait_for_inferior (); |
| 398 | /* Clear the input because what the adapt sends back is different |
| 399 | * depending on whether it was running or not. |
| 400 | */ |
| 401 | slurp_input(); /* After this there should be a prompt */ |
| 402 | fprintf(adapt_stream,"\r"); |
| 403 | expect_prompt(); |
| 404 | printf_filtered("Do you want to download '%s' (y/n)? [y] : ",prog_name); |
| 405 | { |
| 406 | char buffer[10]; |
| 407 | gets(buffer); |
| 408 | if (*buffer != 'n') { |
| 409 | adapt_load(prog_name,0); |
| 410 | } |
| 411 | } |
| 412 | |
| 413 | #ifdef NOTDEF |
| 414 | /* Set the PC and wait for a go/cont */ |
| 415 | fprintf (adapt_stream, "G %x,N\r",entry_pt); |
| 416 | printf_filtered("Now use the 'continue' command to start.\n"); |
| 417 | expect_prompt (); |
| 418 | #else |
| 419 | insert_breakpoints (); /* Needed to get correct instruction in cache */ |
| 420 | proceed(entry_pt, -1, 0); |
| 421 | #endif |
| 422 | |
| 423 | } else { |
| 424 | printf_filtered("Adapt not open yet.\n"); |
| 425 | } |
| 426 | } |
| 427 | |
| 428 | /* Translate baud rates from integers to damn B_codes. Unix should |
| 429 | have outgrown this crap years ago, but even POSIX wouldn't buck it. */ |
| 430 | |
| 431 | #ifndef B19200 |
| 432 | #define B19200 EXTA |
| 433 | #endif |
| 434 | #ifndef B38400 |
| 435 | #define B38400 EXTB |
| 436 | #endif |
| 437 | |
| 438 | static struct {int rate, damn_b;} baudtab[] = { |
| 439 | {0, B0}, |
| 440 | {50, B50}, |
| 441 | {75, B75}, |
| 442 | {110, B110}, |
| 443 | {134, B134}, |
| 444 | {150, B150}, |
| 445 | {200, B200}, |
| 446 | {300, B300}, |
| 447 | {600, B600}, |
| 448 | {1200, B1200}, |
| 449 | {1800, B1800}, |
| 450 | {2400, B2400}, |
| 451 | {4800, B4800}, |
| 452 | {9600, B9600}, |
| 453 | {19200, B19200}, |
| 454 | {38400, B38400}, |
| 455 | {-1, -1}, |
| 456 | }; |
| 457 | |
| 458 | static int damn_b (rate) |
| 459 | int rate; |
| 460 | { |
| 461 | int i; |
| 462 | |
| 463 | for (i = 0; baudtab[i].rate != -1; i++) |
| 464 | if (rate == baudtab[i].rate) return baudtab[i].damn_b; |
| 465 | return B38400; /* Random */ |
| 466 | } |
| 467 | |
| 468 | |
| 469 | /* Open a connection to a remote debugger. |
| 470 | NAME is the filename used for communication, then a space, |
| 471 | then the baud rate. |
| 472 | */ |
| 473 | |
| 474 | static int baudrate = 9600; |
| 475 | static void |
| 476 | adapt_open (name, from_tty) |
| 477 | char *name; |
| 478 | int from_tty; |
| 479 | { |
| 480 | TERMINAL sg; |
| 481 | unsigned int prl; |
| 482 | char *p; |
| 483 | |
| 484 | /* Find the first whitespace character, it separates dev_name from |
| 485 | prog_name. */ |
| 486 | if (name == 0) |
| 487 | goto erroid; |
| 488 | |
| 489 | for (p = name; |
| 490 | *p != '\0' && !isspace (*p); p++) |
| 491 | ; |
| 492 | if (*p == '\0') |
| 493 | erroid: |
| 494 | error ("\ |
| 495 | Please include the name of the device for the serial port,\n\ |
| 496 | the baud rate, and the name of the program to run on the remote system."); |
| 497 | dev_name = (char*)malloc(p - name + 1); |
| 498 | strncpy (dev_name, name, p - name); |
| 499 | dev_name[p - name] = '\0'; |
| 500 | |
| 501 | /* Skip over the whitespace after dev_name */ |
| 502 | for (; isspace (*p); p++) |
| 503 | /*EMPTY*/; |
| 504 | |
| 505 | if (1 != sscanf (p, "%d ", &baudrate)) |
| 506 | goto erroid; |
| 507 | |
| 508 | /* Skip the number and then the spaces */ |
| 509 | for (; isdigit (*p); p++) |
| 510 | /*EMPTY*/; |
| 511 | for (; isspace (*p); p++) |
| 512 | /*EMPTY*/; |
| 513 | |
| 514 | if (prog_name != NULL) |
| 515 | free (prog_name); |
| 516 | prog_name = savestring (p, strlen (p)); |
| 517 | |
| 518 | adapt_close (0); |
| 519 | |
| 520 | adapt_desc = open (dev_name, O_RDWR); |
| 521 | if (adapt_desc < 0) |
| 522 | perror_with_name (dev_name); |
| 523 | ioctl (adapt_desc, TIOCGETP, &sg); |
| 524 | #ifdef HAVE_TERMIO |
| 525 | sg.c_cc[VMIN] = 0; /* read with timeout. */ |
| 526 | sg.c_cc[VTIME] = timeout * 10; |
| 527 | sg.c_lflag &= ~(ICANON | ECHO); |
| 528 | sg.c_cflag = (sg.c_cflag & ~CBAUD) | damn_b (baudrate); |
| 529 | #else |
| 530 | sg.sg_ispeed = damn_b (baudrate); |
| 531 | sg.sg_ospeed = damn_b (baudrate); |
| 532 | sg.sg_flags |= RAW | ANYP; |
| 533 | sg.sg_flags &= ~ECHO; |
| 534 | #endif |
| 535 | |
| 536 | ioctl (adapt_desc, TIOCSETP, &sg); |
| 537 | adapt_stream = fdopen (adapt_desc, "r+"); |
| 538 | |
| 539 | push_target (&adapt_ops); |
| 540 | |
| 541 | #ifndef HAVE_TERMIO |
| 542 | #ifndef NO_SIGINTERRUPT |
| 543 | /* Cause SIGALRM's to make reads fail with EINTR instead of resuming |
| 544 | the read. */ |
| 545 | if (siginterrupt (SIGALRM, 1) != 0) |
| 546 | perror ("adapt_open: error in siginterrupt"); |
| 547 | #endif |
| 548 | |
| 549 | /* Set up read timeout timer. */ |
| 550 | if ((void (*)) signal (SIGALRM, adapt_timer) == (void (*)) -1) |
| 551 | perror ("adapt_open: error in signal"); |
| 552 | #endif |
| 553 | |
| 554 | #if defined (LOG_FILE) |
| 555 | log_file = fopen (LOG_FILE, "w"); |
| 556 | if (log_file == NULL) |
| 557 | perror_with_name (LOG_FILE); |
| 558 | #endif |
| 559 | |
| 560 | /* Put this port into NORMAL mode, send the 'normal' character */ |
| 561 | write(adapt_desc, "\ 1", 1); /* Control A */ |
| 562 | write(adapt_desc, "\r", 1); |
| 563 | expect_prompt (); |
| 564 | |
| 565 | /* Hello? Are you there? */ |
| 566 | write (adapt_desc, "\r", 1); |
| 567 | |
| 568 | expect_prompt (); |
| 569 | |
| 570 | /* Clear any break points */ |
| 571 | adapt_clear_breakpoints(); |
| 572 | |
| 573 | /* Determine the processor revision level */ |
| 574 | prl = (unsigned int)read_register(CFG_REGNUM) >> 24; |
| 575 | if (prl == 0x03) { |
| 576 | processor_type = TYPE_A29000; |
| 577 | } else if ((prl&0xf0) == 0x40) { /* 29030 = 0x4* */ |
| 578 | processor_type = TYPE_A29030; |
| 579 | fprintf_filtered(stderr,"WARNING: debugging of A29030 not tested.\n"); |
| 580 | } else if ((prl&0xf0) == 0x20) { /* 29050 = 0x2* */ |
| 581 | processor_type = TYPE_A29050; |
| 582 | fprintf_filtered(stderr,"WARNING: debugging of A29050 not tested.\n"); |
| 583 | } else { |
| 584 | processor_type = TYPE_UNKNOWN; |
| 585 | fprintf_filtered(stderr,"WARNING: processor type unknown.\n"); |
| 586 | } |
| 587 | |
| 588 | /* Print out some stuff, letting the user now what's going on */ |
| 589 | printf_filtered("Remote debugging on an %s connect to an Adapt via %s.\n", |
| 590 | processor_name[processor_type],dev_name); |
| 591 | /* FIXME: can this restriction be removed? */ |
| 592 | printf_filtered("Remote debugging using virtual addresses works only\n"); |
| 593 | printf_filtered("\twhen virtual addresses map 1:1 to physical addresses.\n"); |
| 594 | if (processor_type != TYPE_A29050) { |
| 595 | fprintf_filtered(stderr, |
| 596 | "Freeze-mode debugging not available, and can only be done on an A29050.\n"); |
| 597 | } |
| 598 | } |
| 599 | |
| 600 | /* Close out all files and local state before this target loses control. */ |
| 601 | |
| 602 | static void |
| 603 | adapt_close (quitting) |
| 604 | int quitting; |
| 605 | { |
| 606 | |
| 607 | /* Clear any break points */ |
| 608 | adapt_clear_breakpoints(); |
| 609 | |
| 610 | /* Put this port back into REMOTE mode */ |
| 611 | if (adapt_stream) { |
| 612 | fflush(adapt_stream); |
| 613 | sleep(1); /* Let any output make it all the way back */ |
| 614 | write(adapt_desc, "R\r", 2); |
| 615 | } |
| 616 | |
| 617 | /* Due to a bug in Unix, fclose closes not only the stdio stream, |
| 618 | but also the file descriptor. So we don't actually close |
| 619 | adapt_desc. */ |
| 620 | if (adapt_stream) |
| 621 | fclose (adapt_stream); /* This also closes adapt_desc */ |
| 622 | if (adapt_desc >= 0) |
| 623 | /* close (adapt_desc); */ |
| 624 | |
| 625 | /* Do not try to close adapt_desc again, later in the program. */ |
| 626 | adapt_stream = NULL; |
| 627 | adapt_desc = -1; |
| 628 | |
| 629 | #if defined (LOG_FILE) |
| 630 | if (log_file) { |
| 631 | if (ferror (log_file)) |
| 632 | printf_filtered ("Error writing log file.\n"); |
| 633 | if (fclose (log_file) != 0) |
| 634 | printf_filtered ("Error closing log file.\n"); |
| 635 | log_file = NULL; |
| 636 | } |
| 637 | #endif |
| 638 | } |
| 639 | |
| 640 | /* Attach to the target that is already loaded and possibly running */ |
| 641 | static void |
| 642 | adapt_attach (args, from_tty) |
| 643 | char *args; |
| 644 | int from_tty; |
| 645 | { |
| 646 | |
| 647 | if (from_tty) |
| 648 | printf_filtered ("Attaching to remote program %s.\n", prog_name); |
| 649 | |
| 650 | /* Send the adapt a kill. It is ok if it is not already running */ |
| 651 | fprintf(adapt_stream, "K\r"); fflush(adapt_stream); |
| 652 | expect_prompt(); /* Slurp the echo */ |
| 653 | } |
| 654 | |
| 655 | |
| 656 | /* Terminate the open connection to the remote debugger. |
| 657 | Use this when you want to detach and do something else |
| 658 | with your gdb. */ |
| 659 | void |
| 660 | adapt_detach (args,from_tty) |
| 661 | char *args; |
| 662 | int from_tty; |
| 663 | { |
| 664 | |
| 665 | if (adapt_stream) { /* Send it on its way (tell it to continue) */ |
| 666 | adapt_clear_breakpoints(); |
| 667 | fprintf(adapt_stream,"G\r"); |
| 668 | } |
| 669 | |
| 670 | pop_target(); /* calls adapt_close to do the real work */ |
| 671 | if (from_tty) |
| 672 | printf_filtered ("Ending remote %s debugging\n", target_shortname); |
| 673 | } |
| 674 | |
| 675 | /* Tell the remote machine to resume. */ |
| 676 | |
| 677 | void |
| 678 | adapt_resume (step, sig) |
| 679 | int step, sig; |
| 680 | { |
| 681 | if (step) |
| 682 | { |
| 683 | write (adapt_desc, "t 1,s\r", 6); |
| 684 | /* Wait for the echo. */ |
| 685 | expect ("t 1,s\r\n"); |
| 686 | /* Then comes a line containing the instruction we stepped to. */ |
| 687 | expect ("@"); |
| 688 | /* Then we get the prompt. */ |
| 689 | expect_prompt (); |
| 690 | |
| 691 | /* Force the next adapt_wait to return a trap. Not doing anything |
| 692 | about I/O from the target means that the user has to type |
| 693 | "continue" to see any. FIXME, this should be fixed. */ |
| 694 | need_artificial_trap = 1; |
| 695 | } |
| 696 | else |
| 697 | { |
| 698 | write (adapt_desc, "G\r", 2); |
| 699 | /* Swallow the echo. */ |
| 700 | expect_prompt(); |
| 701 | } |
| 702 | } |
| 703 | |
| 704 | /* Wait until the remote machine stops, then return, |
| 705 | storing status in STATUS just as `wait' would. */ |
| 706 | |
| 707 | int |
| 708 | adapt_wait (status) |
| 709 | WAITTYPE *status; |
| 710 | { |
| 711 | /* Strings to look for. '?' means match any single character. |
| 712 | Note that with the algorithm we use, the initial character |
| 713 | of the string cannot recur in the string, or we will not |
| 714 | find some cases of the string in the input. */ |
| 715 | |
| 716 | static char bpt[] = "@"; |
| 717 | /* It would be tempting to look for "\n[__exit + 0x8]\n" |
| 718 | but that requires loading symbols with "yc i" and even if |
| 719 | we did do that we don't know that the file has symbols. */ |
| 720 | static char exitmsg[] = "@????????I JMPTI GR121,LR0"; |
| 721 | char *bp = bpt; |
| 722 | char *ep = exitmsg; |
| 723 | |
| 724 | /* Large enough for either sizeof (bpt) or sizeof (exitmsg) chars. */ |
| 725 | char swallowed[50]; |
| 726 | /* Current position in swallowed. */ |
| 727 | char *swallowed_p = swallowed; |
| 728 | |
| 729 | int ch; |
| 730 | int ch_handled; |
| 731 | int old_timeout = timeout; |
| 732 | int old_immediate_quit = immediate_quit; |
| 733 | |
| 734 | WSETEXIT ((*status), 0); |
| 735 | |
| 736 | if (need_artificial_trap != 0) |
| 737 | { |
| 738 | WSETSTOP ((*status), SIGTRAP); |
| 739 | need_artificial_trap--; |
| 740 | return 0; |
| 741 | } |
| 742 | |
| 743 | timeout = 0; /* Don't time out -- user program is running. */ |
| 744 | immediate_quit = 1; /* Helps ability to QUIT */ |
| 745 | while (1) { |
| 746 | QUIT; /* Let user quit and leave process running */ |
| 747 | ch_handled = 0; |
| 748 | ch = readchar (); |
| 749 | if (ch == *bp) { |
| 750 | bp++; |
| 751 | if (*bp == '\0') |
| 752 | break; |
| 753 | ch_handled = 1; |
| 754 | |
| 755 | *swallowed_p++ = ch; |
| 756 | } else |
| 757 | bp = bpt; |
| 758 | if (ch == *ep || *ep == '?') { |
| 759 | ep++; |
| 760 | if (*ep == '\0') |
| 761 | break; |
| 762 | |
| 763 | if (!ch_handled) |
| 764 | *swallowed_p++ = ch; |
| 765 | ch_handled = 1; |
| 766 | } else |
| 767 | ep = exitmsg; |
| 768 | if (!ch_handled) { |
| 769 | char *p; |
| 770 | /* Print out any characters which have been swallowed. */ |
| 771 | for (p = swallowed; p < swallowed_p; ++p) |
| 772 | putc (*p, stdout); |
| 773 | swallowed_p = swallowed; |
| 774 | putc (ch, stdout); |
| 775 | } |
| 776 | } |
| 777 | expect_prompt (); |
| 778 | if (*bp== '\0') |
| 779 | WSETSTOP ((*status), SIGTRAP); |
| 780 | else |
| 781 | WSETEXIT ((*status), 0); |
| 782 | timeout = old_timeout; |
| 783 | immediate_quit = old_immediate_quit; |
| 784 | return 0; |
| 785 | } |
| 786 | |
| 787 | /* Return the name of register number REGNO |
| 788 | in the form input and output by adapt. |
| 789 | |
| 790 | Returns a pointer to a static buffer containing the answer. */ |
| 791 | static char * |
| 792 | get_reg_name (regno) |
| 793 | int regno; |
| 794 | { |
| 795 | static char buf[80]; |
| 796 | if (regno >= GR96_REGNUM && regno < GR96_REGNUM + 32 ) |
| 797 | sprintf (buf, "GR%03d", regno - GR96_REGNUM + 96); |
| 798 | #if defined(GR64_REGNUM) |
| 799 | else if (regno >= GR64_REGNUM && regno < GR64_REGNUM + 32 ) |
| 800 | sprintf (buf, "GR%03d", regno - GR64_REGNUM + 64); |
| 801 | #endif |
| 802 | else if (regno >= LR0_REGNUM && regno < LR0_REGNUM + 128) |
| 803 | sprintf (buf, "LR%03d", regno - LR0_REGNUM); |
| 804 | else if (regno == Q_REGNUM) |
| 805 | strcpy (buf, "SR131"); |
| 806 | else if (regno >= BP_REGNUM && regno <= CR_REGNUM) |
| 807 | sprintf (buf, "SR%03d", regno - BP_REGNUM + 133); |
| 808 | else if (regno == ALU_REGNUM) |
| 809 | strcpy (buf, "SR132"); |
| 810 | else if (regno >= IPC_REGNUM && regno <= IPB_REGNUM) |
| 811 | sprintf (buf, "SR%03d", regno - IPC_REGNUM + 128); |
| 812 | else if (regno >= VAB_REGNUM && regno <= LRU_REGNUM) { |
| 813 | /* When a 29050 is in freeze-mode, read shadow pcs instead */ |
| 814 | if ((regno >= NPC_REGNUM && regno <= PC2_REGNUM) && USE_SHADOW_PC) |
| 815 | sprintf (buf, "SR%03d", regno - NPC_REGNUM + 20); |
| 816 | else |
| 817 | sprintf (buf, "SR%03d", regno - VAB_REGNUM); |
| 818 | } |
| 819 | else if (regno == GR1_REGNUM) |
| 820 | strcpy (buf, "GR001"); |
| 821 | return buf; |
| 822 | } |
| 823 | |
| 824 | /* Read the remote registers. */ |
| 825 | |
| 826 | static void |
| 827 | adapt_fetch_registers () |
| 828 | { |
| 829 | int reg_index; |
| 830 | int regnum_index; |
| 831 | char tempbuf[10]; |
| 832 | int sreg_buf[16]; |
| 833 | int i,j; |
| 834 | |
| 835 | /* |
| 836 | * Global registers |
| 837 | */ |
| 838 | #if defined(GR64_REGNUM) |
| 839 | write (adapt_desc, "dw gr64,gr95\r", 13); |
| 840 | for (reg_index = 64, regnum_index = GR64_REGNUM; |
| 841 | reg_index < 96; |
| 842 | reg_index += 4, regnum_index += 4) |
| 843 | { |
| 844 | sprintf (tempbuf, "GR%03d ", reg_index); |
| 845 | expect (tempbuf); |
| 846 | get_hex_regs (4, regnum_index); |
| 847 | expect ("\n"); |
| 848 | } |
| 849 | #endif |
| 850 | write (adapt_desc, "dw gr96,gr127\r", 14); |
| 851 | for (reg_index = 96, regnum_index = GR96_REGNUM; |
| 852 | reg_index < 128; |
| 853 | reg_index += 4, regnum_index += 4) |
| 854 | { |
| 855 | sprintf (tempbuf, "GR%03d ", reg_index); |
| 856 | expect (tempbuf); |
| 857 | get_hex_regs (4, regnum_index); |
| 858 | expect ("\n"); |
| 859 | } |
| 860 | |
| 861 | /* |
| 862 | * Local registers |
| 863 | */ |
| 864 | for (i = 0; i < 128; i += 32) |
| 865 | { |
| 866 | /* The PC has a tendency to hang if we get these |
| 867 | all in one fell swoop ("dw lr0,lr127"). */ |
| 868 | sprintf (tempbuf, "dw lr%d\r", i); |
| 869 | write (adapt_desc, tempbuf, strlen (tempbuf)); |
| 870 | for (reg_index = i, regnum_index = LR0_REGNUM + i; |
| 871 | reg_index < i + 32; |
| 872 | reg_index += 4, regnum_index += 4) |
| 873 | { |
| 874 | sprintf (tempbuf, "LR%03d ", reg_index); |
| 875 | expect (tempbuf); |
| 876 | get_hex_regs (4, regnum_index); |
| 877 | expect ("\n"); |
| 878 | } |
| 879 | } |
| 880 | |
| 881 | /* |
| 882 | * Special registers |
| 883 | */ |
| 884 | sprintf (tempbuf, "dw sr0\r"); |
| 885 | write (adapt_desc, tempbuf, strlen (tempbuf)); |
| 886 | for (i=0 ; i<4 ; i++) { /* SR0 - SR14 */ |
| 887 | sprintf (tempbuf, "SR%3d",i*4); |
| 888 | expect(tempbuf); |
| 889 | for (j=0 ; j < (i==3 ? 3 : 4) ; j++) |
| 890 | sreg_buf[i*4 + j] = get_hex_word(); |
| 891 | } |
| 892 | expect_prompt(); |
| 893 | /* |
| 894 | * Read the pcs individually if we are in freeze mode. |
| 895 | * See get_reg_name(), it translates the register names for the pcs to |
| 896 | * the names of the shadow pcs. |
| 897 | */ |
| 898 | if (USE_SHADOW_PC) { |
| 899 | sreg_buf[10] = read_register(NPC_REGNUM); /* pc0 */ |
| 900 | sreg_buf[11] = read_register(PC_REGNUM); /* pc1 */ |
| 901 | sreg_buf[12] = read_register(PC2_REGNUM); /* pc2 */ |
| 902 | } |
| 903 | for (i=0 ; i<14 ; i++) /* Supply vab -> lru */ |
| 904 | supply_register(VAB_REGNUM+i, (char *) &sreg_buf[i]); |
| 905 | sprintf (tempbuf, "dw sr128\r"); |
| 906 | write (adapt_desc, tempbuf, strlen (tempbuf)); |
| 907 | for (i=0 ; i<2 ; i++) { /* SR128 - SR135 */ |
| 908 | sprintf (tempbuf, "SR%3d",128 + i*4); |
| 909 | expect(tempbuf); |
| 910 | for (j=0 ; j<4 ; j++) |
| 911 | sreg_buf[i*4 + j] = get_hex_word(); |
| 912 | } |
| 913 | expect_prompt(); |
| 914 | supply_register(IPC_REGNUM,(char *) &sreg_buf[0]); |
| 915 | supply_register(IPA_REGNUM,(char *) &sreg_buf[1]); |
| 916 | supply_register(IPB_REGNUM,(char *) &sreg_buf[2]); |
| 917 | supply_register(Q_REGNUM, (char *) &sreg_buf[3]); |
| 918 | /* Skip ALU */ |
| 919 | supply_register(BP_REGNUM, (char *) &sreg_buf[5]); |
| 920 | supply_register(FC_REGNUM, (char *) &sreg_buf[6]); |
| 921 | supply_register(CR_REGNUM, (char *) &sreg_buf[7]); |
| 922 | |
| 923 | /* There doesn't seem to be any way to get these. */ |
| 924 | { |
| 925 | int val = -1; |
| 926 | supply_register (FPE_REGNUM, (char *) &val); |
| 927 | supply_register (INTE_REGNUM, (char *) &val); |
| 928 | supply_register (FPS_REGNUM, (char *) &val); |
| 929 | supply_register (EXO_REGNUM, (char *) &val); |
| 930 | } |
| 931 | |
| 932 | write (adapt_desc, "dw gr1,gr1\r", 11); |
| 933 | expect ("GR001 "); |
| 934 | get_hex_regs (1, GR1_REGNUM); |
| 935 | expect_prompt (); |
| 936 | } |
| 937 | |
| 938 | /* Fetch register REGNO, or all registers if REGNO is -1. |
| 939 | */ |
| 940 | static void |
| 941 | adapt_fetch_register (regno) |
| 942 | int regno; |
| 943 | { |
| 944 | if (regno == -1) |
| 945 | adapt_fetch_registers (); |
| 946 | else |
| 947 | { |
| 948 | char *name = get_reg_name (regno); |
| 949 | fprintf (adapt_stream, "dw %s,%s\r", name, name); |
| 950 | expect (name); |
| 951 | expect (" "); |
| 952 | get_hex_regs (1, regno); |
| 953 | expect_prompt (); |
| 954 | } |
| 955 | } |
| 956 | |
| 957 | /* Store the remote registers from the contents of the block REGS. */ |
| 958 | |
| 959 | static void |
| 960 | adapt_store_registers () |
| 961 | { |
| 962 | int i, j; |
| 963 | |
| 964 | fprintf (adapt_stream, "s gr1,%x\r", read_register (GR1_REGNUM)); |
| 965 | expect_prompt (); |
| 966 | |
| 967 | #if defined(GR64_REGNUM) |
| 968 | for (j = 0; j < 32; j += 16) |
| 969 | { |
| 970 | fprintf (adapt_stream, "s gr%d,", j + 64); |
| 971 | for (i = 0; i < 15; ++i) |
| 972 | fprintf (adapt_stream, "%x,", read_register (GR64_REGNUM + j + i)); |
| 973 | fprintf (adapt_stream, "%x\r", read_register (GR64_REGNUM + j + 15)); |
| 974 | expect_prompt (); |
| 975 | } |
| 976 | #endif |
| 977 | for (j = 0; j < 32; j += 16) |
| 978 | { |
| 979 | fprintf (adapt_stream, "s gr%d,", j + 96); |
| 980 | for (i = 0; i < 15; ++i) |
| 981 | fprintf (adapt_stream, "%x,", read_register (GR96_REGNUM + j + i)); |
| 982 | fprintf (adapt_stream, "%x\r", read_register (GR96_REGNUM + j + 15)); |
| 983 | expect_prompt (); |
| 984 | } |
| 985 | |
| 986 | for (j = 0; j < 128; j += 16) |
| 987 | { |
| 988 | fprintf (adapt_stream, "s lr%d,", j); |
| 989 | for (i = 0; i < 15; ++i) |
| 990 | fprintf (adapt_stream, "%x,", read_register (LR0_REGNUM + j + i)); |
| 991 | fprintf (adapt_stream, "%x\r", read_register (LR0_REGNUM + j + 15)); |
| 992 | expect_prompt (); |
| 993 | } |
| 994 | |
| 995 | fprintf (adapt_stream, "s sr128,%x,%x,%x\r", read_register (IPC_REGNUM), |
| 996 | read_register (IPA_REGNUM), read_register (IPB_REGNUM)); |
| 997 | expect_prompt (); |
| 998 | fprintf (adapt_stream, "s sr133,%x,%x,%x\r", read_register (BP_REGNUM), |
| 999 | read_register (FC_REGNUM), read_register (CR_REGNUM)); |
| 1000 | expect_prompt (); |
| 1001 | fprintf (adapt_stream, "s sr131,%x\r", read_register (Q_REGNUM)); |
| 1002 | expect_prompt (); |
| 1003 | fprintf (adapt_stream, "s sr0,"); |
| 1004 | for (i=0 ; i<7 ; ++i) |
| 1005 | fprintf (adapt_stream, "%x,", read_register (VAB_REGNUM + i)); |
| 1006 | expect_prompt (); |
| 1007 | fprintf (adapt_stream, "s sr7,"); |
| 1008 | for (i=7; i<14 ; ++i) |
| 1009 | fprintf (adapt_stream, "%x,", read_register (VAB_REGNUM + i)); |
| 1010 | expect_prompt (); |
| 1011 | } |
| 1012 | |
| 1013 | /* Store register REGNO, or all if REGNO == -1. |
| 1014 | Return errno value. */ |
| 1015 | void |
| 1016 | adapt_store_register (regno) |
| 1017 | int regno; |
| 1018 | { |
| 1019 | /* printf("adapt_store_register() called.\n"); fflush(stdout); /* */ |
| 1020 | if (regno == -1) |
| 1021 | adapt_store_registers (); |
| 1022 | else |
| 1023 | { |
| 1024 | char *name = get_reg_name (regno); |
| 1025 | fprintf (adapt_stream, "s %s,%x\r", name, read_register (regno)); |
| 1026 | /* Setting GR1 changes the numbers of all the locals, so |
| 1027 | invalidate the register cache. Do this *after* calling |
| 1028 | read_register, because we want read_register to return the |
| 1029 | value that write_register has just stuffed into the registers |
| 1030 | array, not the value of the register fetched from the |
| 1031 | inferior. */ |
| 1032 | if (regno == GR1_REGNUM) |
| 1033 | registers_changed (); |
| 1034 | expect_prompt (); |
| 1035 | } |
| 1036 | } |
| 1037 | |
| 1038 | /* Get ready to modify the registers array. On machines which store |
| 1039 | individual registers, this doesn't need to do anything. On machines |
| 1040 | which store all the registers in one fell swoop, this makes sure |
| 1041 | that registers contains all the registers from the program being |
| 1042 | debugged. */ |
| 1043 | |
| 1044 | void |
| 1045 | adapt_prepare_to_store () |
| 1046 | { |
| 1047 | /* Do nothing, since we can store individual regs */ |
| 1048 | } |
| 1049 | |
| 1050 | static CORE_ADDR |
| 1051 | translate_addr(addr) |
| 1052 | CORE_ADDR addr; |
| 1053 | { |
| 1054 | #if defined(KERNEL_DEBUGGING) |
| 1055 | /* Check for a virtual address in the kernel */ |
| 1056 | /* Assume physical address of ublock is in paddr_u register */ |
| 1057 | if (addr >= UVADDR) { |
| 1058 | /* PADDR_U register holds the physical address of the ublock */ |
| 1059 | CORE_ADDR i = (CORE_ADDR)read_register(PADDR_U_REGNUM); |
| 1060 | return(i + addr - (CORE_ADDR)UVADDR); |
| 1061 | } else { |
| 1062 | return(addr); |
| 1063 | } |
| 1064 | #else |
| 1065 | return(addr); |
| 1066 | #endif |
| 1067 | } |
| 1068 | |
| 1069 | |
| 1070 | /* FIXME! Merge these two. */ |
| 1071 | int |
| 1072 | adapt_xfer_inferior_memory (memaddr, myaddr, len, write) |
| 1073 | CORE_ADDR memaddr; |
| 1074 | char *myaddr; |
| 1075 | int len; |
| 1076 | int write; |
| 1077 | { |
| 1078 | |
| 1079 | memaddr = translate_addr(memaddr); |
| 1080 | |
| 1081 | if (write) |
| 1082 | return adapt_write_inferior_memory (memaddr, myaddr, len); |
| 1083 | else |
| 1084 | return adapt_read_inferior_memory (memaddr, myaddr, len); |
| 1085 | } |
| 1086 | |
| 1087 | void |
| 1088 | adapt_files_info () |
| 1089 | { |
| 1090 | printf_filtered("\tAttached to %s at %d baud and running program %s\n", |
| 1091 | dev_name, baudrate, prog_name); |
| 1092 | printf_filtered("\ton an %s processor.\n", processor_name[processor_type]); |
| 1093 | } |
| 1094 | |
| 1095 | /* Copy LEN bytes of data from debugger memory at MYADDR |
| 1096 | to inferior's memory at MEMADDR. Returns errno value. |
| 1097 | * sb/sh instructions don't work on unaligned addresses, when TU=1. |
| 1098 | */ |
| 1099 | int |
| 1100 | adapt_write_inferior_memory (memaddr, myaddr, len) |
| 1101 | CORE_ADDR memaddr; |
| 1102 | char *myaddr; |
| 1103 | int len; |
| 1104 | { |
| 1105 | int i; |
| 1106 | unsigned int cps; |
| 1107 | |
| 1108 | /* Turn TU bit off so we can do 'sb' commands */ |
| 1109 | cps = read_register(CPS_REGNUM); |
| 1110 | if (cps & 0x00000800) |
| 1111 | write_register(CPS_REGNUM,cps&~(0x00000800)); |
| 1112 | |
| 1113 | for (i = 0; i < len; i++) |
| 1114 | { |
| 1115 | if ((i % 16) == 0) |
| 1116 | fprintf (adapt_stream, "sb %x,", memaddr + i); |
| 1117 | if ((i % 16) == 15 || i == len - 1) |
| 1118 | { |
| 1119 | fprintf (adapt_stream, "%x\r", ((unsigned char *)myaddr)[i]); |
| 1120 | expect_prompt (); |
| 1121 | } |
| 1122 | else |
| 1123 | fprintf (adapt_stream, "%x,", ((unsigned char *)myaddr)[i]); |
| 1124 | } |
| 1125 | /* Restore the old value of cps if the TU bit was on */ |
| 1126 | if (cps & 0x00000800) |
| 1127 | write_register(CPS_REGNUM,cps); |
| 1128 | return len; |
| 1129 | } |
| 1130 | |
| 1131 | /* Read LEN bytes from inferior memory at MEMADDR. Put the result |
| 1132 | at debugger address MYADDR. Returns errno value. */ |
| 1133 | int |
| 1134 | adapt_read_inferior_memory(memaddr, myaddr, len) |
| 1135 | CORE_ADDR memaddr; |
| 1136 | char *myaddr; |
| 1137 | int len; |
| 1138 | { |
| 1139 | int i; |
| 1140 | |
| 1141 | /* Number of bytes read so far. */ |
| 1142 | int count; |
| 1143 | |
| 1144 | /* Starting address of this pass. */ |
| 1145 | unsigned long startaddr; |
| 1146 | |
| 1147 | /* Number of bytes to read in this pass. */ |
| 1148 | int len_this_pass; |
| 1149 | |
| 1150 | /* Note that this code works correctly if startaddr is just less |
| 1151 | than UINT_MAX (well, really CORE_ADDR_MAX if there was such a |
| 1152 | thing). That is, something like |
| 1153 | adapt_read_bytes (CORE_ADDR_MAX - 4, foo, 4) |
| 1154 | works--it never adds len to memaddr and gets 0. */ |
| 1155 | /* However, something like |
| 1156 | adapt_read_bytes (CORE_ADDR_MAX - 3, foo, 4) |
| 1157 | doesn't need to work. Detect it and give up if there's an attempt |
| 1158 | to do that. */ |
| 1159 | |
| 1160 | if (((memaddr - 1) + len) < memaddr) |
| 1161 | return EIO; |
| 1162 | |
| 1163 | startaddr = memaddr; |
| 1164 | count = 0; |
| 1165 | while (count < len) |
| 1166 | { |
| 1167 | len_this_pass = 16; |
| 1168 | if ((startaddr % 16) != 0) |
| 1169 | len_this_pass -= startaddr % 16; |
| 1170 | if (len_this_pass > (len - count)) |
| 1171 | len_this_pass = (len - count); |
| 1172 | |
| 1173 | fprintf (adapt_stream, "db %x,%x\r", startaddr, |
| 1174 | (startaddr - 1) + len_this_pass); |
| 1175 | |
| 1176 | #ifdef NOTDEF /* Why do this */ |
| 1177 | expect ("\n"); |
| 1178 | /* Look for 8 hex digits. */ |
| 1179 | i = 0; |
| 1180 | while (1) |
| 1181 | { |
| 1182 | if (isxdigit (readchar ())) |
| 1183 | ++i; |
| 1184 | else |
| 1185 | { |
| 1186 | expect_prompt (); |
| 1187 | error ("Hex digit expected from remote system."); |
| 1188 | } |
| 1189 | if (i >= 8) |
| 1190 | break; |
| 1191 | } |
| 1192 | #endif /* NOTDEF */ |
| 1193 | |
| 1194 | expect (" "); |
| 1195 | |
| 1196 | for (i = 0; i < len_this_pass; i++) |
| 1197 | get_hex_byte (&myaddr[count++]); |
| 1198 | |
| 1199 | expect_prompt (); |
| 1200 | |
| 1201 | startaddr += len_this_pass; |
| 1202 | } |
| 1203 | return count; |
| 1204 | } |
| 1205 | |
| 1206 | #define MAX_BREAKS 8 |
| 1207 | static int num_brkpts=0; |
| 1208 | static int |
| 1209 | adapt_insert_breakpoint(addr, save) |
| 1210 | CORE_ADDR addr; |
| 1211 | char *save; /* Throw away, let adapt save instructions */ |
| 1212 | { |
| 1213 | if (num_brkpts < MAX_BREAKS) { |
| 1214 | num_brkpts++; |
| 1215 | fprintf (adapt_stream, "B %x", addr); |
| 1216 | fprintf (adapt_stream, "\r"); |
| 1217 | expect_prompt (); |
| 1218 | return(0); /* Success */ |
| 1219 | } else { |
| 1220 | fprintf_filtered(stderr, |
| 1221 | "Too many break points, break point not installed\n"); |
| 1222 | return(1); /* Failure */ |
| 1223 | } |
| 1224 | |
| 1225 | } |
| 1226 | static int |
| 1227 | adapt_remove_breakpoint(addr, save) |
| 1228 | CORE_ADDR addr; |
| 1229 | char *save; /* Throw away, let adapt save instructions */ |
| 1230 | { |
| 1231 | if (num_brkpts > 0) { |
| 1232 | num_brkpts--; |
| 1233 | fprintf (adapt_stream, "BR %x", addr); |
| 1234 | fprintf (adapt_stream, "\r"); |
| 1235 | fflush (adapt_stream); |
| 1236 | expect_prompt (); |
| 1237 | } |
| 1238 | return(0); |
| 1239 | } |
| 1240 | |
| 1241 | /* Clear the adapts notion of what the break points are */ |
| 1242 | static int |
| 1243 | adapt_clear_breakpoints() |
| 1244 | { |
| 1245 | if (adapt_stream) { |
| 1246 | fprintf (adapt_stream, "BR"); /* Clear all break points */ |
| 1247 | fprintf (adapt_stream, "\r"); |
| 1248 | fflush(adapt_stream); |
| 1249 | expect_prompt (); |
| 1250 | } |
| 1251 | num_brkpts = 0; |
| 1252 | } |
| 1253 | static void |
| 1254 | adapt_mourn() |
| 1255 | { |
| 1256 | adapt_clear_breakpoints(); |
| 1257 | pop_target (); /* Pop back to no-child state */ |
| 1258 | generic_mourn_inferior (); |
| 1259 | } |
| 1260 | |
| 1261 | /* Display everthing we read in from the adapt until we match/see the |
| 1262 | * specified string |
| 1263 | */ |
| 1264 | static int |
| 1265 | display_until(str) |
| 1266 | char *str; |
| 1267 | { |
| 1268 | int i=0,j,c; |
| 1269 | |
| 1270 | while (c=readchar()) { |
| 1271 | if (c==str[i]) { |
| 1272 | i++; |
| 1273 | if (i == strlen(str)) return; |
| 1274 | } else { |
| 1275 | if (i) { |
| 1276 | for (j=0 ; j<i ; j++) /* Put everthing we matched */ |
| 1277 | putchar(str[j]); |
| 1278 | i=0; |
| 1279 | } |
| 1280 | putchar(c); |
| 1281 | } |
| 1282 | } |
| 1283 | |
| 1284 | } |
| 1285 | |
| 1286 | |
| 1287 | /* Put a command string, in args, out to the adapt. The adapt is assumed to |
| 1288 | be in raw mode, all writing/reading done through adapt_desc. |
| 1289 | Ouput from the adapt is placed on the users terminal until the |
| 1290 | prompt from the adapt is seen. |
| 1291 | FIXME: Can't handle commands that take input. */ |
| 1292 | |
| 1293 | void |
| 1294 | adapt_com (args, fromtty) |
| 1295 | char *args; |
| 1296 | int fromtty; |
| 1297 | { |
| 1298 | if (!adapt_stream) { |
| 1299 | printf_filtered("Adapt not open. Use the 'target' command to open.\n"); |
| 1300 | return; |
| 1301 | } |
| 1302 | |
| 1303 | /* Clear all input so only command relative output is displayed */ |
| 1304 | slurp_input(); |
| 1305 | |
| 1306 | switch(islower(args[0]) ? toupper(args[0]) : args[0]) { |
| 1307 | default: |
| 1308 | printf_filtered("Unknown/Unimplemented adapt command '%s'\n",args); |
| 1309 | break; |
| 1310 | case 'G': /* Go, begin execution */ |
| 1311 | write(adapt_desc,args,strlen(args)); |
| 1312 | write(adapt_desc,"\r",1); |
| 1313 | expect_prompt(); |
| 1314 | break; |
| 1315 | case 'B': /* Break points, B or BR */ |
| 1316 | case 'C': /* Check current 29k status (running/halted) */ |
| 1317 | case 'D': /* Display data/registers */ |
| 1318 | case 'I': /* Input from i/o space */ |
| 1319 | case 'J': /* Jam an instruction */ |
| 1320 | case 'K': /* Kill, stop execution */ |
| 1321 | case 'L': /* Disassemble */ |
| 1322 | case 'O': /* Output to i/o space */ |
| 1323 | case 'T': /* Trace */ |
| 1324 | case 'P': /* Pulse an input line */ |
| 1325 | case 'X': /* Examine special purpose registers */ |
| 1326 | case 'Z': /* Display trace buffer */ |
| 1327 | write(adapt_desc,args,strlen(args)); |
| 1328 | write(adapt_desc,"\r",1); |
| 1329 | expect(args); /* Don't display the command */ |
| 1330 | display_until("# "); |
| 1331 | break; |
| 1332 | /* Begin commands that take input in the form 'c x,y[,z...]' */ |
| 1333 | case 'S': /* Set memory or register */ |
| 1334 | if (index(args,',')) { /* Assume it is properly formatted */ |
| 1335 | write(adapt_desc,args,strlen(args)); |
| 1336 | write(adapt_desc,"\r",1); |
| 1337 | expect_prompt(); |
| 1338 | } |
| 1339 | break; |
| 1340 | } |
| 1341 | } |
| 1342 | |
| 1343 | /* Define the target subroutine names */ |
| 1344 | |
| 1345 | struct target_ops adapt_ops = { |
| 1346 | "adapt", "Remote AMD `Adapt' target", |
| 1347 | "Remote debug an AMD 290*0 using an `Adapt' monitor via RS232", |
| 1348 | adapt_open, adapt_close, |
| 1349 | adapt_attach, adapt_detach, adapt_resume, adapt_wait, |
| 1350 | adapt_fetch_register, adapt_store_register, |
| 1351 | adapt_prepare_to_store, |
| 1352 | adapt_xfer_inferior_memory, |
| 1353 | adapt_files_info, |
| 1354 | adapt_insert_breakpoint, adapt_remove_breakpoint, /* Breakpoints */ |
| 1355 | 0, 0, 0, 0, 0, /* Terminal handling */ |
| 1356 | adapt_kill, /* FIXME, kill */ |
| 1357 | adapt_load, |
| 1358 | 0, /* lookup_symbol */ |
| 1359 | adapt_create_inferior, /* create_inferior */ |
| 1360 | adapt_mourn, /* mourn_inferior FIXME */ |
| 1361 | 0, /* can_run */ |
| 1362 | 0, /* notice_signals */ |
| 1363 | process_stratum, 0, /* next */ |
| 1364 | 1, 1, 1, 1, 1, /* all mem, mem, stack, regs, exec */ |
| 1365 | 0,0, /* Section pointers */ |
| 1366 | OPS_MAGIC, /* Always the last thing */ |
| 1367 | }; |
| 1368 | |
| 1369 | void |
| 1370 | _initialize_remote_adapt () |
| 1371 | { |
| 1372 | add_target (&adapt_ops); |
| 1373 | add_com ("adapt <command>", class_obscure, adapt_com, |
| 1374 | "Send a command to the AMD Adapt remote monitor."); |
| 1375 | } |