| 1 | /* Memory-access and commands for remote es1800 processes, for GDB. |
| 2 | Copyright (C) 1988, 1992 Free Software Foundation, Inc. |
| 3 | |
| 4 | This file is added to GDB to make it possible to do debugging via an |
| 5 | ES-1800 emulator. The code was originally written by Johan Holmberg |
| 6 | TT/SJ Ericsson Telecom AB and later modified by Johan Henriksson |
| 7 | TT/SJ. It was modified for gdb 4.0 by TX/DK Jan Nordenand by TX/DKG |
| 8 | Harald Johansen. |
| 9 | |
| 10 | This file is part of GDB. |
| 11 | |
| 12 | GDB is free software; you can redistribute it and/or modify |
| 13 | it under the terms of the GNU General Public License as published by |
| 14 | the Free Software Foundation; either version 1, or (at your option) |
| 15 | any later version. |
| 16 | |
| 17 | GDB is distributed in the hope that it will be useful, |
| 18 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 19 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 20 | GNU General Public License for more details. |
| 21 | |
| 22 | You should have received a copy of the GNU General Public License |
| 23 | along with GDB; see the file COPYING. If not, write to |
| 24 | the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ |
| 25 | |
| 26 | |
| 27 | /* Emulator communication protocol. |
| 28 | All values are encoded in ascii hex digits. |
| 29 | |
| 30 | Request |
| 31 | Command |
| 32 | Reply |
| 33 | read registers: |
| 34 | DR<cr> |
| 35 | - 0 - - 1 - - 2 - - 3 - - 4 - - 5 - -- 6 - - 7 - |
| 36 | D = XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX |
| 37 | A = XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX |
| 38 | PC = XXXXXX SSP = XXXXXX USP = XXXXXX SR = XXXXXXXX |
| 39 | > |
| 40 | Each byte of register data is described by two hex digits. |
| 41 | |
| 42 | write regs |
| 43 | D0=XXXXXXXX<cr> |
| 44 | >D1=XXXXXXXX<cr> |
| 45 | >D2=XXXXXXXX<cr> |
| 46 | >D3=XXXXXXXX<cr> |
| 47 | >D4=XXXXXXXX<cr> |
| 48 | >D5=XXXXXXXX<cr> |
| 49 | >D6=XXXXXXXX<cr> |
| 50 | >D7=XXXXXXXX<cr> |
| 51 | >A0=XXXXXXXX<cr> |
| 52 | >A1=XXXXXXXX<cr> |
| 53 | >A2=XXXXXXXX<cr> |
| 54 | >A3=XXXXXXXX<cr> |
| 55 | >A4=XXXXXXXX<cr> |
| 56 | >A5=XXXXXXXX<cr> |
| 57 | >A6=XXXXXXXX<cr> |
| 58 | >A7=XXXXXXXX<cr> |
| 59 | >SR=XXXXXXXX<cr> |
| 60 | >PC=XXXXXX<cr> |
| 61 | > |
| 62 | Each byte of register data is described by two hex digits. |
| 63 | |
| 64 | read mem |
| 65 | @.BAA..AA |
| 66 | $FFFFFFXX |
| 67 | > |
| 68 | AA..AA is address, XXXXXXX is the contents |
| 69 | |
| 70 | write mem |
| 71 | @.BAA..AA=$XXXXXXXX |
| 72 | > |
| 73 | AA..AA is address, XXXXXXXX is data |
| 74 | |
| 75 | cont |
| 76 | PC=$AA..AA |
| 77 | >RBK |
| 78 | R> |
| 79 | AA..AA is address to resume. If AA..AA is omitted, resume at same address. |
| 80 | |
| 81 | step |
| 82 | PC=$AA..AA |
| 83 | >STP |
| 84 | R> |
| 85 | AA..AA is address to resume. If AA..AA is omitted, resume at same address. |
| 86 | |
| 87 | kill req |
| 88 | STP |
| 89 | > |
| 90 | */ |
| 91 | |
| 92 | |
| 93 | #include <stdio.h> |
| 94 | #include <signal.h> |
| 95 | #include <sys/ioctl.h> |
| 96 | #include <sys/file.h> |
| 97 | #include <errno.h> |
| 98 | #include <ctype.h> |
| 99 | #include <string.h> |
| 100 | #include <setjmp.h> |
| 101 | #include <fcntl.h> |
| 102 | #include "defs.h" |
| 103 | #include "frame.h" |
| 104 | #include "inferior.h" |
| 105 | #include "target.h" |
| 106 | #include "wait.h" |
| 107 | #include "terminal.h" |
| 108 | #include "command.h" |
| 109 | #include "remote-utils.h" |
| 110 | |
| 111 | #ifdef USG |
| 112 | #include <sys/types.h> |
| 113 | #include <sgtty.h> |
| 114 | #endif |
| 115 | |
| 116 | #include <signal.h> |
| 117 | |
| 118 | /* External variables referenced. */ |
| 119 | |
| 120 | extern bfd *exec_bfd; |
| 121 | |
| 122 | /* Prototypes for local functions */ |
| 123 | |
| 124 | static void |
| 125 | es1800_child_detach PARAMS ((char *, int)); |
| 126 | |
| 127 | static void |
| 128 | es1800_child_open PARAMS ((char *, int)); |
| 129 | |
| 130 | static void |
| 131 | es1800_transparent PARAMS ((char *, int)); |
| 132 | |
| 133 | static void |
| 134 | es1800_create_inferior PARAMS ((char *, char *, char **)); |
| 135 | |
| 136 | static void |
| 137 | es1800_load PARAMS ((char *, int)); |
| 138 | |
| 139 | static void |
| 140 | es1800_kill PARAMS ((void)); |
| 141 | |
| 142 | static int |
| 143 | verify_break PARAMS ((int)); |
| 144 | |
| 145 | static int |
| 146 | es1800_remove_breakpoint PARAMS ((CORE_ADDR, char *)); |
| 147 | |
| 148 | static int |
| 149 | es1800_insert_breakpoint PARAMS ((CORE_ADDR, char *)); |
| 150 | |
| 151 | static void |
| 152 | es1800_files_info PARAMS ((struct target_ops *)); |
| 153 | |
| 154 | static int |
| 155 | es1800_xfer_inferior_memory PARAMS ((CORE_ADDR, char *, int, int, |
| 156 | struct target_ops *)); |
| 157 | |
| 158 | static void |
| 159 | es1800_prepare_to_store PARAMS ((void)); |
| 160 | |
| 161 | static int |
| 162 | es1800_wait PARAMS ((WAITTYPE *)); |
| 163 | |
| 164 | static void |
| 165 | es1800_resume PARAMS ((int, int, int)); |
| 166 | |
| 167 | static void |
| 168 | es1800_detach PARAMS ((char *, int)); |
| 169 | |
| 170 | static void |
| 171 | es1800_attach PARAMS ((char *, int)); |
| 172 | |
| 173 | static int |
| 174 | damn_b PARAMS ((char *)); |
| 175 | |
| 176 | static void |
| 177 | es1800_open PARAMS ((char *, int)); |
| 178 | |
| 179 | static void |
| 180 | es1800_timer PARAMS ((void)); |
| 181 | |
| 182 | static void |
| 183 | es1800_reset PARAMS ((char *)); |
| 184 | |
| 185 | static void |
| 186 | es1800_request_quit PARAMS ((void)); |
| 187 | |
| 188 | static int |
| 189 | readchar PARAMS ((void)); |
| 190 | |
| 191 | static void |
| 192 | expect PARAMS ((char *, int)); |
| 193 | |
| 194 | static void |
| 195 | expect_prompt PARAMS ((void)); |
| 196 | |
| 197 | static void |
| 198 | download PARAMS ((FILE *, int, int)); |
| 199 | |
| 200 | #if 0 |
| 201 | static void |
| 202 | bfd_copy PARAMS ((bfd *, bfd *)); |
| 203 | #endif |
| 204 | |
| 205 | static void |
| 206 | get_break_addr PARAMS ((int, CORE_ADDR *)); |
| 207 | |
| 208 | static int |
| 209 | fromhex PARAMS ((int)); |
| 210 | |
| 211 | static int |
| 212 | tohex PARAMS ((int)); |
| 213 | |
| 214 | static void |
| 215 | es1800_close PARAMS ((int)); |
| 216 | |
| 217 | static void |
| 218 | es1800_fetch_registers PARAMS ((void)); |
| 219 | |
| 220 | static void |
| 221 | es1800_fetch_register PARAMS ((int)); |
| 222 | |
| 223 | static void |
| 224 | es1800_store_register PARAMS ((int)); |
| 225 | |
| 226 | static void |
| 227 | es1800_read_bytes PARAMS ((CORE_ADDR, char *, int)); |
| 228 | |
| 229 | static void |
| 230 | es1800_write_bytes PARAMS ((CORE_ADDR, char *, int)); |
| 231 | |
| 232 | static void |
| 233 | send_with_reply PARAMS ((char *, char *, int)); |
| 234 | |
| 235 | static void |
| 236 | send_command PARAMS ((char *)); |
| 237 | |
| 238 | static void |
| 239 | send PARAMS ((char *)); |
| 240 | |
| 241 | static void |
| 242 | getmessage PARAMS ((char *, int)); |
| 243 | |
| 244 | static void |
| 245 | es1800_mourn_inferior PARAMS ((void)); |
| 246 | |
| 247 | static void |
| 248 | es1800_create_break_insn PARAMS ((char *, int)); |
| 249 | |
| 250 | static void |
| 251 | es1800_init_break PARAMS ((char *, int)); |
| 252 | |
| 253 | /* Local variables */ |
| 254 | |
| 255 | #define LOG_FILE "es1800.log" |
| 256 | #if defined (LOG_FILE) |
| 257 | static FILE *log_file; |
| 258 | #endif |
| 259 | |
| 260 | extern struct target_ops es1800_ops; /* Forward decl */ |
| 261 | extern struct target_ops es1800_child_ops; /* Forward decl */ |
| 262 | |
| 263 | static int kiodebug; |
| 264 | static int timeout = 100; |
| 265 | static char *savename; /* Name of i/o device used */ |
| 266 | static TERMINAL es1800_sg_save; /* Save stty state */ |
| 267 | static int es1800_fc_save; /* Save fcntl state */ |
| 268 | |
| 269 | /* indicates that the emulator uses 32-bit data-adress (68020-mode) |
| 270 | instead of 24-bit (68000 -mode) */ |
| 271 | |
| 272 | static int m68020; |
| 273 | |
| 274 | #define MODE (m68020 ? "M68020" : "M68000" ) |
| 275 | #define ES1800_BREAK_VEC (0xf) |
| 276 | |
| 277 | /* Descriptor for I/O to remote machine. Initialize it to -1 so that |
| 278 | es1800_open knows that we don't have a file open when the program |
| 279 | starts. */ |
| 280 | |
| 281 | static int es1800_desc = -1; |
| 282 | |
| 283 | #define PBUFSIZ 1000 |
| 284 | #define HDRLEN sizeof("@.BAAAAAAAA=$VV\r") |
| 285 | |
| 286 | /* Maximum number of bytes to read/write at once. The value here |
| 287 | is chosen to fill up a packet. */ |
| 288 | |
| 289 | #define MAXBUFBYTES ((PBUFSIZ-150)*16/75 ) |
| 290 | |
| 291 | static int es1800_break_vec = 0; |
| 292 | static char es1800_break_insn[2]; |
| 293 | static long es1800_break_address; |
| 294 | static void (*old_sigint)(); /* Old signal-handler for sigint */ |
| 295 | static jmp_buf interrupt; |
| 296 | |
| 297 | /* Local signalhandler to allow breaking tranfers or program run. |
| 298 | Rely on global variables: old_sigint(), interrupt */ |
| 299 | |
| 300 | static void |
| 301 | es1800_request_quit () |
| 302 | { |
| 303 | /* restore original signalhandler */ |
| 304 | signal (SIGINT, old_sigint); |
| 305 | longjmp (interrupt, 1); |
| 306 | } |
| 307 | |
| 308 | |
| 309 | /* Reset emulator. |
| 310 | Sending reset character(octal 32) to emulator. |
| 311 | quit - return to '(esgdb)' prompt or continue */ |
| 312 | |
| 313 | static void |
| 314 | es1800_reset (quit) |
| 315 | char *quit; |
| 316 | { |
| 317 | char buf[80]; |
| 318 | |
| 319 | if (quit) |
| 320 | { |
| 321 | printf ("\nResetting emulator... "); |
| 322 | } |
| 323 | strcpy (buf, "\032"); |
| 324 | send (buf); |
| 325 | expect_prompt (); |
| 326 | if (quit) |
| 327 | { |
| 328 | error ("done\n"); |
| 329 | } |
| 330 | } |
| 331 | |
| 332 | |
| 333 | /* Called when SIGALRM signal sent due to alarm() timeout. |
| 334 | Rely on global variables: timeout */ |
| 335 | |
| 336 | #ifndef HAVE_TERMIO |
| 337 | |
| 338 | static void |
| 339 | es1800_timer () |
| 340 | { |
| 341 | if (kiodebug) |
| 342 | { |
| 343 | printf ("es1800_timer called\n"); |
| 344 | } |
| 345 | alarm (timeout); |
| 346 | } |
| 347 | |
| 348 | #endif /* HAVE_TERMIO */ |
| 349 | |
| 350 | |
| 351 | /* Open a connection to a remote debugger and push the new target |
| 352 | onto the stack. Check if the emulator is responding and find out |
| 353 | what kind of processor the emulator is connected to. |
| 354 | Initiate the breakpoint handling in the emulator. |
| 355 | |
| 356 | name - the filename used for communication (ex. '/dev/tta') |
| 357 | from_tty - says whether to be verbose or not */ |
| 358 | |
| 359 | static void |
| 360 | es1800_open (name, from_tty) |
| 361 | char *name; |
| 362 | int from_tty; |
| 363 | { |
| 364 | TERMINAL sg; |
| 365 | char buf[PBUFSIZ]; |
| 366 | char *p; |
| 367 | int i, fcflag; |
| 368 | char baudrate[1024]; |
| 369 | |
| 370 | m68020 = 0; |
| 371 | |
| 372 | if (!name) /* no device name given in target command */ |
| 373 | { |
| 374 | error_no_arg ("serial port device name"); |
| 375 | } |
| 376 | sprintf(baudrate, "%d", sr_get_baud_rate()); |
| 377 | |
| 378 | target_preopen (from_tty); |
| 379 | es1800_close (0); |
| 380 | |
| 381 | /* open the device and configure it for communication */ |
| 382 | |
| 383 | #ifndef DEBUG_STDIN |
| 384 | |
| 385 | es1800_desc = open (name, O_RDWR); |
| 386 | if (es1800_desc < 0) |
| 387 | { |
| 388 | perror_with_name (name); |
| 389 | } |
| 390 | savename = savestring (name, strlen (name)); |
| 391 | |
| 392 | if (ioctl (es1800_desc, TIOCGETP, &sg) == -1) |
| 393 | { |
| 394 | perror_with_name (name); |
| 395 | } |
| 396 | es1800_sg_save = sg; |
| 397 | |
| 398 | if ((fcflag = fcntl (es1800_desc, F_GETFL, 0)) == -1) |
| 399 | { |
| 400 | perror_with_name ("fcntl serial"); |
| 401 | } |
| 402 | es1800_fc_save = fcflag; |
| 403 | |
| 404 | fcflag = (fcflag & (FREAD | FWRITE)); /* mask out any funny stuff */ |
| 405 | if (fcntl (es1800_desc, F_SETFL, fcflag) == -1) |
| 406 | { |
| 407 | perror_with_name ("fcntl serial"); |
| 408 | } |
| 409 | |
| 410 | #ifdef HAVE_TERMIO |
| 411 | sg.c_cc[VMIN] = 0; /* read with timeout. */ |
| 412 | sg.c_cc[VTIME] = timeout * 10; |
| 413 | sg.c_lflag &= ~(ICANON | ECHO); |
| 414 | sg.c_cflag = (sg.c_cflag & ~CBAUD) | damn_b (baudrate); |
| 415 | #else |
| 416 | sg.sg_ispeed = damn_b (baudrate); |
| 417 | sg.sg_ospeed = damn_b (baudrate); |
| 418 | sg.sg_flags = CBREAK+TANDEM; |
| 419 | #endif |
| 420 | |
| 421 | if ((ioctl (es1800_desc, TIOCSETP, &sg)) == -1) |
| 422 | { |
| 423 | perror ("es1800_open: error in ioctl"); |
| 424 | } |
| 425 | |
| 426 | #endif /* DEBUG_STDIN */ |
| 427 | |
| 428 | push_target (&es1800_ops); /* Switch to using remote target now */ |
| 429 | if (from_tty) |
| 430 | { |
| 431 | printf ("Remote ES1800 debugging using %s\n", name); |
| 432 | } |
| 433 | |
| 434 | #ifndef HAVE_TERMIO |
| 435 | |
| 436 | #ifndef NO_SIGINTERRUPT |
| 437 | |
| 438 | /* Cause SIGALRM's to make reads fail with EINTR instead of resuming |
| 439 | the read. */ |
| 440 | |
| 441 | if (siginterrupt (SIGALRM, 1) != 0) |
| 442 | { |
| 443 | perror ("es1800_open: error in siginterrupt"); |
| 444 | } |
| 445 | |
| 446 | #endif /* NO_SIGINTERRUPT */ |
| 447 | |
| 448 | /* Set up read timeout timer. */ |
| 449 | |
| 450 | if ((void(*)()) signal (SIGALRM, es1800_timer) == (void(*)()) -1) |
| 451 | { |
| 452 | perror ("es1800_open: error in signal"); |
| 453 | } |
| 454 | |
| 455 | #endif /* HAVE_TERMIO */ |
| 456 | |
| 457 | |
| 458 | #if defined (LOG_FILE) |
| 459 | |
| 460 | log_file = fopen (LOG_FILE, "w"); |
| 461 | if (log_file == NULL) |
| 462 | { |
| 463 | perror_with_name (LOG_FILE); |
| 464 | } |
| 465 | |
| 466 | #endif /* LOG_FILE */ |
| 467 | |
| 468 | /* Hello? Are you there?, also check mode */ |
| 469 | |
| 470 | /* send_with_reply( "DB 0 TO 1", buf, sizeof(buf)); */ |
| 471 | /* for (p = buf, i = 0; *p++ =='0';) */ /* count the number of zeros */ |
| 472 | /* i++; */ |
| 473 | |
| 474 | send ("\032"); |
| 475 | getmessage (buf, sizeof (buf)); /* send reset character */ |
| 476 | |
| 477 | if (from_tty) |
| 478 | { |
| 479 | printf ("Checking mode.... "); |
| 480 | } |
| 481 | /* m68020 = (i==8); */ /* if eight zeros then we are in m68020 mode */ |
| 482 | |
| 483 | /* What kind of processor am i talking to ?*/ |
| 484 | p = buf; |
| 485 | while (*p++ != '\n') {;} |
| 486 | while (*p++ != '\n') {;} |
| 487 | while (*p++ != '\n') {;} |
| 488 | for (i = 0; i < 20; i++, p++) {;} |
| 489 | m68020 = !strncmp (p, "68020", 5); |
| 490 | if (from_tty) |
| 491 | { |
| 492 | printf ("You are in %s(%c%c%c%c%c)-mode\n", MODE, p[0], p[1], p[2], |
| 493 | p[3], p[4]); |
| 494 | } |
| 495 | |
| 496 | /* if no init_break statement is present in .gdb file we have to check |
| 497 | whether to download a breakpoint routine or not */ |
| 498 | |
| 499 | #if 0 |
| 500 | if ((es1800_break_vec == 0) || (verify_break (es1800_break_vec) != 0) |
| 501 | && query ("No breakpoint routine in ES 1800 emulator!\nDownload a breakpoint routine to the emulator? ")) |
| 502 | { |
| 503 | CORE_ADDR memaddress; |
| 504 | printf ("Give the start address of the breakpoint routine: "); |
| 505 | scanf ("%li", &memaddress); |
| 506 | es1800_init_break ((es1800_break_vec ? es1800_break_vec : |
| 507 | ES1800_BREAK_VEC), memaddress); |
| 508 | } |
| 509 | #endif |
| 510 | |
| 511 | } |
| 512 | |
| 513 | /* Close out all files and local state before this target loses control. |
| 514 | quitting - are we quitting gdb now? */ |
| 515 | |
| 516 | static void |
| 517 | es1800_close (quitting) |
| 518 | int quitting; |
| 519 | { |
| 520 | if (es1800_desc >= 0) |
| 521 | { |
| 522 | printf ("\nClosing connection to emulator...\n"); |
| 523 | ioctl (es1800_desc, TIOCSETP, &es1800_sg_save); |
| 524 | fcntl (es1800_desc,F_SETFL, es1800_fc_save); |
| 525 | close (es1800_desc); |
| 526 | es1800_desc = -1; |
| 527 | } |
| 528 | if (savename != NULL) |
| 529 | { |
| 530 | free (savename); |
| 531 | } |
| 532 | savename = NULL; |
| 533 | |
| 534 | #if defined (LOG_FILE) |
| 535 | |
| 536 | if (log_file != NULL) |
| 537 | { |
| 538 | if (ferror (log_file)) |
| 539 | { |
| 540 | printf ("Error writing log file.\n"); |
| 541 | } |
| 542 | if (fclose (log_file) != 0) |
| 543 | { |
| 544 | printf ("Error closing log file.\n"); |
| 545 | } |
| 546 | log_file = NULL; |
| 547 | } |
| 548 | |
| 549 | #endif /* LOG_FILE */ |
| 550 | |
| 551 | } |
| 552 | |
| 553 | /* damn_b() |
| 554 | |
| 555 | Translate baud rates from integers to damn B_codes. Unix should |
| 556 | have outgrown this crap years ago, but even POSIX wouldn't buck it. |
| 557 | rate - the baudrate given as a string |
| 558 | return value: the baudrate as a B_code */ |
| 559 | |
| 560 | #ifndef B19200 |
| 561 | # define B19200 EXTA |
| 562 | #endif |
| 563 | #ifndef B38400 |
| 564 | # define B38400 EXTB |
| 565 | #endif |
| 566 | |
| 567 | struct |
| 568 | { |
| 569 | char *rate, |
| 570 | damn_b; |
| 571 | } baudtab[] = { |
| 572 | {"0", B0}, |
| 573 | {"50", B50}, |
| 574 | {"75", B75}, |
| 575 | {"110", B110}, |
| 576 | {"134", B134}, |
| 577 | {"150", B150}, |
| 578 | {"200", B200}, |
| 579 | {"300", B300}, |
| 580 | {"600", B600}, |
| 581 | {"1200", B1200}, |
| 582 | {"1800", B1800}, |
| 583 | {"2400", B2400}, |
| 584 | {"4800", B4800}, |
| 585 | {"9600", B9600}, |
| 586 | {"19200", B19200}, |
| 587 | {"38400", B38400}, |
| 588 | {0, -1}, |
| 589 | }; |
| 590 | |
| 591 | static int |
| 592 | damn_b (rate) |
| 593 | char *rate; |
| 594 | { |
| 595 | int i; |
| 596 | |
| 597 | for (i = 0; baudtab[i].rate != 0; i++) |
| 598 | { |
| 599 | if (STREQ (rate, baudtab[i].rate)) |
| 600 | { |
| 601 | return (baudtab[i].damn_b); |
| 602 | } |
| 603 | } |
| 604 | error ("Illegal baudrate"); |
| 605 | } |
| 606 | |
| 607 | |
| 608 | /* Attaches to a process on the target side |
| 609 | proc_id - the id of the process to be attached. |
| 610 | from_tty - says whether to be verbose or not */ |
| 611 | |
| 612 | static void |
| 613 | es1800_attach (args, from_tty) |
| 614 | char *args; |
| 615 | int from_tty; |
| 616 | { |
| 617 | error ("Cannot attach to pid %s, this feature is not implemented yet.", |
| 618 | args); |
| 619 | } |
| 620 | |
| 621 | |
| 622 | /* Takes a program previously attached to and detaches it. |
| 623 | We better not have left any breakpoints |
| 624 | in the program or it'll die when it hits one. |
| 625 | Close the open connection to the remote debugger. |
| 626 | Use this when you want to detach and do something else |
| 627 | with your gdb. |
| 628 | |
| 629 | args - arguments given to the 'detach' command |
| 630 | from_tty - says whether to be verbose or not */ |
| 631 | |
| 632 | static void |
| 633 | es1800_detach (args, from_tty) |
| 634 | char *args; |
| 635 | int from_tty; |
| 636 | { |
| 637 | if (args) |
| 638 | { |
| 639 | error ("Argument given to \"detach\" when remotely debugging."); |
| 640 | } |
| 641 | pop_target (); |
| 642 | if (from_tty) |
| 643 | { |
| 644 | printf ("Ending es1800 remote debugging.\n"); |
| 645 | } |
| 646 | } |
| 647 | |
| 648 | |
| 649 | /* Tell the remote machine to resume. |
| 650 | step - single-step or run free |
| 651 | siggnal - the signal value to be given to the target (0 = no signal) */ |
| 652 | |
| 653 | static void |
| 654 | es1800_resume (pid, step, siggnal) |
| 655 | int pid; |
| 656 | int step; |
| 657 | int siggnal; |
| 658 | { |
| 659 | char buf[PBUFSIZ]; |
| 660 | |
| 661 | if (siggnal) |
| 662 | { |
| 663 | error ("Can't send signals to a remote system."); |
| 664 | } |
| 665 | if (step) |
| 666 | { |
| 667 | strcpy (buf,"STP\r"); |
| 668 | send (buf); |
| 669 | } |
| 670 | else |
| 671 | { |
| 672 | send_command ("RBK"); |
| 673 | } |
| 674 | } |
| 675 | |
| 676 | /* Wait until the remote machine stops, then return, |
| 677 | storing status in STATUS just as `wait' would. |
| 678 | status - */ |
| 679 | |
| 680 | static int |
| 681 | es1800_wait (status) |
| 682 | WAITTYPE *status; |
| 683 | { |
| 684 | unsigned char buf[PBUFSIZ]; |
| 685 | int old_timeout = timeout; |
| 686 | |
| 687 | WSETEXIT ((*status), 0); |
| 688 | timeout = 0; /* Don't time out -- user program is running. */ |
| 689 | if (!setjmp (interrupt)) |
| 690 | { |
| 691 | old_sigint = signal (SIGINT, es1800_request_quit); |
| 692 | while (1) |
| 693 | { |
| 694 | getmessage (buf, sizeof(buf)); |
| 695 | if (strncmp ( buf, "\r\n* BREAK *", 11) == 0) |
| 696 | { |
| 697 | WSETSTOP ((*status), SIGTRAP); |
| 698 | send_command ("STP"); /* Restore stack and PC and such */ |
| 699 | if (m68020) |
| 700 | { |
| 701 | send_command ("STP"); |
| 702 | } |
| 703 | break; |
| 704 | } |
| 705 | if (strncmp (buf, "STP\r\n ", 6) == 0) |
| 706 | { |
| 707 | WSETSTOP ((*status), SIGTRAP); |
| 708 | break; |
| 709 | } |
| 710 | if (buf[strlen (buf) - 2] == 'R') |
| 711 | { |
| 712 | printf ("Unexpected emulator reply: \n%s\n", buf); |
| 713 | } |
| 714 | else |
| 715 | { |
| 716 | printf ("Unexpected stop: \n%s\n", buf); |
| 717 | WSETSTOP ((*status), SIGQUIT); |
| 718 | break; |
| 719 | } |
| 720 | } |
| 721 | } |
| 722 | else |
| 723 | { |
| 724 | fflush (stdin); |
| 725 | printf ("\nStopping emulator..."); |
| 726 | if (!setjmp (interrupt)) |
| 727 | { |
| 728 | old_sigint = signal (SIGINT, es1800_request_quit); |
| 729 | send_command ("STP"); |
| 730 | printf (" emulator stopped\n"); |
| 731 | WSETSTOP ((*status), SIGINT); |
| 732 | } |
| 733 | else |
| 734 | { |
| 735 | fflush (stdin); |
| 736 | es1800_reset ((char*) 1); |
| 737 | } |
| 738 | } |
| 739 | signal (SIGINT, old_sigint); |
| 740 | timeout = old_timeout; |
| 741 | return (0); |
| 742 | } |
| 743 | |
| 744 | |
| 745 | /* Fetch register values from remote machine. |
| 746 | regno - the register to be fetched (fetch all registers if -1) */ |
| 747 | |
| 748 | static void |
| 749 | es1800_fetch_register (regno) |
| 750 | int regno; |
| 751 | { |
| 752 | char buf[PBUFSIZ]; |
| 753 | int k; |
| 754 | int r; |
| 755 | char *p; |
| 756 | static char regtab[18][4] = |
| 757 | { |
| 758 | "D0 ", "D1 ", "D2 ", "D3 ", "D4 ", "D5 ", "D6 ", "D7 ", |
| 759 | "A0 ", "A1 ", "A2 ", "A3 ", "A4 ", "A5 ", "A6 ", "SSP", |
| 760 | "SR ", "PC " |
| 761 | }; |
| 762 | |
| 763 | if ((regno < 15) || (regno == 16) || (regno == 17)) |
| 764 | { |
| 765 | r = regno * 4; |
| 766 | send_with_reply (regtab[regno], buf, sizeof (buf)); |
| 767 | p = buf; |
| 768 | for (k = 0; k < 4; k++) |
| 769 | { |
| 770 | if ((p[k*2 + 1] == 0) || (p[k*2 + 2] == 0)) |
| 771 | { |
| 772 | error ("Emulator reply is too short: %s", buf); |
| 773 | } |
| 774 | registers[r++] = (fromhex (p[k*2 + 1]) * 16) + fromhex (p[k*2 + 2]); |
| 775 | } |
| 776 | } |
| 777 | else |
| 778 | { |
| 779 | es1800_fetch_registers (); |
| 780 | } |
| 781 | } |
| 782 | |
| 783 | /* Read the remote registers into REGISTERS. |
| 784 | Always fetches all registers. */ |
| 785 | |
| 786 | static void |
| 787 | es1800_fetch_registers () |
| 788 | { |
| 789 | char buf[PBUFSIZ]; |
| 790 | char SR_buf[PBUFSIZ]; |
| 791 | int i; |
| 792 | int k; |
| 793 | int r; |
| 794 | char *p; |
| 795 | |
| 796 | send_with_reply ("DR", buf, sizeof (buf)); |
| 797 | |
| 798 | /* Reply is edited to a string that describes registers byte by byte, |
| 799 | each byte encoded as two hex characters. */ |
| 800 | |
| 801 | p = buf; |
| 802 | r = 0; |
| 803 | |
| 804 | /* parsing row one - D0-D7-registers */ |
| 805 | |
| 806 | while (*p++ != '\n') {;} |
| 807 | for (i = 4; i < 70; i += (i == 39 ? 3 : 1)) |
| 808 | { |
| 809 | for (k = 0; k < 4; k++) |
| 810 | { |
| 811 | if (p[i+0] == 0 || p[i+1] == 0) |
| 812 | { |
| 813 | error ("Emulator reply is too short: %s", buf); |
| 814 | } |
| 815 | registers[r++] = (fromhex (p[i+0]) * 16) + fromhex (p[i+1]); |
| 816 | i += 2; |
| 817 | } |
| 818 | } |
| 819 | p += i; |
| 820 | |
| 821 | /* parsing row two - A0-A6-registers */ |
| 822 | |
| 823 | while (*p++ != '\n') {;} |
| 824 | for (i = 4; i < 61; i += (i == 39 ? 3 : 1)) |
| 825 | { |
| 826 | for (k = 0; k < 4; k++) |
| 827 | { |
| 828 | if (p[i+0] == 0 || p[i+1] == 0) |
| 829 | { |
| 830 | error ("Emulator reply is too short: %s", buf); |
| 831 | } |
| 832 | registers[r++] = (fromhex (p[i+0])) * 16 + fromhex (p[i+1]); |
| 833 | i += 2; |
| 834 | } |
| 835 | } |
| 836 | p += i; |
| 837 | |
| 838 | while (*p++ != '\n') {;} |
| 839 | |
| 840 | /* fetch SSP-, SR- and PC-registers */ |
| 841 | |
| 842 | /* first - check STATUS-word and decide which stackpointer to use */ |
| 843 | |
| 844 | send_with_reply ("SR", SR_buf, sizeof (SR_buf)); |
| 845 | p = SR_buf; |
| 846 | p += 5; |
| 847 | |
| 848 | if (m68020) |
| 849 | { |
| 850 | if (*p == '3') /* use masterstackpointer MSP */ |
| 851 | { |
| 852 | send_with_reply ("MSP", buf, sizeof (buf)); |
| 853 | } |
| 854 | else if (*p == '2') /* use interruptstackpointer ISP */ |
| 855 | { |
| 856 | send_with_reply ("ISP", buf, sizeof (buf)); |
| 857 | } |
| 858 | else /* use userstackpointer USP */ |
| 859 | { |
| 860 | send_with_reply ("USP", buf, sizeof (buf)); |
| 861 | } |
| 862 | p = buf; |
| 863 | for (k = 0; k<4; k++) |
| 864 | { |
| 865 | if (p[k*2+1] == 0 || p[k*2+2] == 0) |
| 866 | { |
| 867 | error ("Emulator reply is too short: %s", buf); |
| 868 | } |
| 869 | registers[r++] = fromhex (buf[k*2+1]) * 16 + fromhex (buf[k*2+2]); |
| 870 | } |
| 871 | |
| 872 | p = SR_buf; |
| 873 | for (k = 0; k < 4; k++) |
| 874 | { |
| 875 | if (p[k*2+1] == 0 || p[k*2+2] == 0) |
| 876 | { |
| 877 | error ("Emulator reply is too short: %s", buf); |
| 878 | } |
| 879 | registers[r++] = |
| 880 | fromhex (SR_buf[k*2+1]) * 16 + fromhex (SR_buf[k*2+2]); |
| 881 | } |
| 882 | send_with_reply ("PC", buf, sizeof (buf)); |
| 883 | p = buf; |
| 884 | for (k = 0; k<4; k++) |
| 885 | { |
| 886 | if (p[k*2+1] == 0 || p[k*2+2] == 0) |
| 887 | { |
| 888 | error ("Emulator reply is too short: %s", buf); |
| 889 | } |
| 890 | registers[r++] = fromhex (buf[k*2+1]) * 16 + fromhex (buf[k*2+2]); |
| 891 | } |
| 892 | } |
| 893 | else /* 68000-mode */ |
| 894 | { |
| 895 | if (*p == '2') /* use supervisorstackpointer SSP */ |
| 896 | { |
| 897 | send_with_reply ("SSP", buf, sizeof (buf)); |
| 898 | } |
| 899 | else /* use userstackpointer USP */ |
| 900 | { |
| 901 | send_with_reply ("USP", buf, sizeof (buf)); |
| 902 | } |
| 903 | |
| 904 | /* fetch STACKPOINTER */ |
| 905 | |
| 906 | p = buf; |
| 907 | for (k = 0; k < 4; k++) |
| 908 | { |
| 909 | if (p[k*2 + 1] == 0 || p[k*2 + 2] == 0) |
| 910 | { |
| 911 | error ("Emulator reply is too short: %s", buf); |
| 912 | } |
| 913 | registers[r++] = fromhex (buf[k*2+1]) * 16 + fromhex (buf[k*2+2]); |
| 914 | } |
| 915 | |
| 916 | /* fetch STATUS */ |
| 917 | |
| 918 | p = SR_buf; |
| 919 | for (k = 0; k < 4; k++) |
| 920 | { |
| 921 | if (p[k*2+1] == 0 || p[k*2+2] == 0) |
| 922 | { |
| 923 | error ("Emulator reply is too short: %s", buf); |
| 924 | } |
| 925 | registers[r++] = |
| 926 | fromhex (SR_buf[k*2+1]) * 16 + fromhex (SR_buf[k*2+2]); |
| 927 | } |
| 928 | |
| 929 | /* fetch PC */ |
| 930 | |
| 931 | send_with_reply ("PC", buf, sizeof (buf)); |
| 932 | p = buf; |
| 933 | for (k = 0; k < 4; k++) |
| 934 | { |
| 935 | if (p[k*2+1] == 0 || p[k*2+2] == 0) |
| 936 | { |
| 937 | error ("Emulator reply is too short: %s", buf); |
| 938 | } |
| 939 | registers[r++] = fromhex (buf[k*2+1]) * 16 + fromhex (buf[k*2+2]); |
| 940 | } |
| 941 | } |
| 942 | } |
| 943 | |
| 944 | /* Store register value, located in REGISTER, on the target processor. |
| 945 | regno - the register-number of the register to store |
| 946 | (-1 means store them all) |
| 947 | FIXME: Return errno value. */ |
| 948 | |
| 949 | static void |
| 950 | es1800_store_register(regno) |
| 951 | int regno; |
| 952 | { |
| 953 | |
| 954 | static char regtab[18][4] = |
| 955 | { |
| 956 | "D0 ", "D1 ", "D2 ", "D3 ", "D4 ", "D5 ", "D6 ", "D7 ", |
| 957 | "A0 ", "A1 ", "A2 ", "A3 ", "A4 ", "A5 ", "A6 ", "SSP", |
| 958 | "SR ", "PC " |
| 959 | }; |
| 960 | |
| 961 | char buf[PBUFSIZ]; |
| 962 | char SR_buf[PBUFSIZ]; |
| 963 | char stack_pointer[4]; |
| 964 | char *p; |
| 965 | int i; |
| 966 | int j; |
| 967 | int k; |
| 968 | unsigned char *r; |
| 969 | |
| 970 | r = (unsigned char *) registers; |
| 971 | |
| 972 | if (regno == -1) /* write all registers */ |
| 973 | { |
| 974 | j = 0; |
| 975 | k = 18; |
| 976 | } |
| 977 | else /* write one register */ |
| 978 | { |
| 979 | j = regno; |
| 980 | k = regno+1; |
| 981 | r += regno * 4; |
| 982 | } |
| 983 | |
| 984 | if ((regno == -1) || (regno == 15)) |
| 985 | { |
| 986 | /* fetch current status */ |
| 987 | send_with_reply ("SR", SR_buf, sizeof (SR_buf)); |
| 988 | p = SR_buf; |
| 989 | p += 5; |
| 990 | if (m68020) |
| 991 | { |
| 992 | if (*p == '3') /* use masterstackpointer MSP */ |
| 993 | { |
| 994 | strcpy (stack_pointer,"MSP"); |
| 995 | } |
| 996 | else |
| 997 | { |
| 998 | if (*p == '2') /* use interruptstackpointer ISP */ |
| 999 | { |
| 1000 | strcpy (stack_pointer,"ISP"); |
| 1001 | } |
| 1002 | else |
| 1003 | { |
| 1004 | strcpy (stack_pointer,"USP"); /* use userstackpointer USP */ |
| 1005 | } |
| 1006 | } |
| 1007 | } |
| 1008 | else /* 68000-mode */ |
| 1009 | { |
| 1010 | if (*p == '2') /* use supervisorstackpointer SSP */ |
| 1011 | { |
| 1012 | strcpy (stack_pointer,"SSP"); |
| 1013 | } |
| 1014 | else |
| 1015 | { |
| 1016 | strcpy (stack_pointer,"USP");/* use userstackpointer USP */ |
| 1017 | } |
| 1018 | } |
| 1019 | strcpy (regtab[15],stack_pointer); |
| 1020 | } |
| 1021 | |
| 1022 | for (i = j; i<k; i++) |
| 1023 | { |
| 1024 | buf[0] = regtab[i][0]; |
| 1025 | buf[1] = regtab[i][1]; |
| 1026 | buf[2] = regtab[i][2]; |
| 1027 | buf[3] = '='; |
| 1028 | buf[4] = '$'; |
| 1029 | buf[5] = tohex ((*r >> 4) & 0x0f); |
| 1030 | buf[6] = tohex (*r++ & 0x0f); |
| 1031 | buf[7] = tohex ((*r >> 4) & 0x0f); |
| 1032 | buf[8] = tohex (*r++ & 0x0f); |
| 1033 | buf[9] = tohex ((*r >> 4) & 0x0f); |
| 1034 | buf[10] = tohex (*r++ & 0x0f); |
| 1035 | buf[11] = tohex ((*r >> 4) & 0x0f); |
| 1036 | buf[12] = tohex (*r++ & 0x0f); |
| 1037 | buf[13] = 0; |
| 1038 | |
| 1039 | send_with_reply (buf, buf, sizeof (buf)); /* FIXME, reply not used? */ |
| 1040 | } |
| 1041 | } |
| 1042 | |
| 1043 | |
| 1044 | /* Prepare to store registers. */ |
| 1045 | |
| 1046 | static void |
| 1047 | es1800_prepare_to_store () |
| 1048 | { |
| 1049 | /* Do nothing, since we can store individual regs */ |
| 1050 | } |
| 1051 | |
| 1052 | /* Convert hex digit A to a number. */ |
| 1053 | |
| 1054 | static int |
| 1055 | fromhex (a) |
| 1056 | int a; |
| 1057 | { |
| 1058 | if (a >= '0' && a <= '9') |
| 1059 | { |
| 1060 | return a - '0'; |
| 1061 | } |
| 1062 | else if (a >= 'a' && a <= 'f') |
| 1063 | { |
| 1064 | return a - 'a' + 10; |
| 1065 | } |
| 1066 | else if (a >= 'A' && a <= 'F') |
| 1067 | { |
| 1068 | return a - 'A' + 10; |
| 1069 | } |
| 1070 | else |
| 1071 | { |
| 1072 | error ("Reply contains invalid hex digit"); |
| 1073 | } |
| 1074 | return (-1); |
| 1075 | } |
| 1076 | |
| 1077 | |
| 1078 | /* Convert number NIB to a hex digit. */ |
| 1079 | |
| 1080 | static int |
| 1081 | tohex (nib) |
| 1082 | int nib; |
| 1083 | { |
| 1084 | if (nib < 10) |
| 1085 | { |
| 1086 | return ('0' + nib); |
| 1087 | } |
| 1088 | else |
| 1089 | { |
| 1090 | return ('A' + nib - 10); |
| 1091 | } |
| 1092 | } |
| 1093 | |
| 1094 | /* Read or write LEN bytes from inferior memory at MEMADDR, transferring |
| 1095 | to or from debugger address MYADDR. Write to inferior if WRITE is |
| 1096 | nonzero. Returns length of data written or read; 0 for error. |
| 1097 | |
| 1098 | memaddr - the target's address |
| 1099 | myaddr - gdb's address |
| 1100 | len - number of bytes |
| 1101 | write - write if != 0 otherwise read */ |
| 1102 | |
| 1103 | static int |
| 1104 | es1800_xfer_inferior_memory (memaddr, myaddr, len, write, tops) |
| 1105 | CORE_ADDR memaddr; |
| 1106 | char *myaddr; |
| 1107 | int len; |
| 1108 | int write; |
| 1109 | struct target_ops *tops; /* Unused */ |
| 1110 | { |
| 1111 | int origlen = len; |
| 1112 | int xfersize; |
| 1113 | |
| 1114 | while (len > 0) |
| 1115 | { |
| 1116 | xfersize = len > MAXBUFBYTES ? MAXBUFBYTES : len; |
| 1117 | if (write) |
| 1118 | { |
| 1119 | es1800_write_bytes (memaddr, myaddr, xfersize); |
| 1120 | } |
| 1121 | else |
| 1122 | { |
| 1123 | es1800_read_bytes (memaddr, myaddr, xfersize); |
| 1124 | } |
| 1125 | memaddr += xfersize; |
| 1126 | myaddr += xfersize; |
| 1127 | len -= xfersize; |
| 1128 | } |
| 1129 | return (origlen); /* no error possible */ |
| 1130 | } |
| 1131 | |
| 1132 | |
| 1133 | /* Write memory data directly to the emulator. |
| 1134 | This does not inform the data cache; the data cache uses this. |
| 1135 | MEMADDR is the address in the remote memory space. |
| 1136 | MYADDR is the address of the buffer in our space. |
| 1137 | LEN is the number of bytes. |
| 1138 | |
| 1139 | memaddr - the target's address |
| 1140 | myaddr - gdb's address |
| 1141 | len - number of bytes */ |
| 1142 | |
| 1143 | static void |
| 1144 | es1800_write_bytes (memaddr, myaddr, len) |
| 1145 | CORE_ADDR memaddr; |
| 1146 | char *myaddr; |
| 1147 | int len; |
| 1148 | { |
| 1149 | char buf[PBUFSIZ]; |
| 1150 | int i; |
| 1151 | char *p; |
| 1152 | |
| 1153 | p = myaddr; |
| 1154 | for (i = 0; i < len; i++) |
| 1155 | { |
| 1156 | sprintf (buf, "@.B$%x=$%x", memaddr+i, (*p++) & 0xff); |
| 1157 | send_with_reply (buf, buf, sizeof (buf)); /* FIXME send_command? */ |
| 1158 | } |
| 1159 | } |
| 1160 | |
| 1161 | |
| 1162 | /* Read memory data directly from the emulator. |
| 1163 | This does not use the data cache; the data cache uses this. |
| 1164 | |
| 1165 | memaddr - the target's address |
| 1166 | myaddr - gdb's address |
| 1167 | len - number of bytes */ |
| 1168 | |
| 1169 | static void |
| 1170 | es1800_read_bytes (memaddr, myaddr, len) |
| 1171 | CORE_ADDR memaddr; |
| 1172 | char *myaddr; |
| 1173 | int len; |
| 1174 | { |
| 1175 | static int DB_tab[16] = {8,11,14,17,20,23,26,29,34,37,40,43,46,49,52,55}; |
| 1176 | char buf[PBUFSIZ]; |
| 1177 | int i; |
| 1178 | int low_addr; |
| 1179 | char *p; |
| 1180 | char *b; |
| 1181 | |
| 1182 | if (len > PBUFSIZ / 2 - 1) |
| 1183 | { |
| 1184 | abort (); |
| 1185 | } |
| 1186 | |
| 1187 | if (len == 1) /* The emulator does not like expressions like: */ |
| 1188 | { |
| 1189 | len = 2; /* DB.B $20018 TO $20018 */ |
| 1190 | } |
| 1191 | |
| 1192 | /* Reply describes registers byte by byte, each byte encoded as two hex |
| 1193 | characters. */ |
| 1194 | |
| 1195 | sprintf (buf, "DB.B $%x TO $%x", memaddr, memaddr+len-1); |
| 1196 | send_with_reply (buf, buf, sizeof (buf)); |
| 1197 | b = buf; |
| 1198 | low_addr = memaddr&0x0f; |
| 1199 | for (i = low_addr; i < low_addr + len; i++) |
| 1200 | { |
| 1201 | if ((!(i % 16)) && i) |
| 1202 | { /* if (i = 16,32,48) */ |
| 1203 | while (*p++!='\n') {;} |
| 1204 | b = p; |
| 1205 | } |
| 1206 | p = b + DB_tab[i%16] + (m68020 ? 2 : 0); |
| 1207 | if (p[0] == 32 || p[1] == 32) |
| 1208 | { |
| 1209 | error ("Emulator reply is too short: %s", buf); |
| 1210 | } |
| 1211 | myaddr[i-low_addr] = fromhex (p[0]) * 16 + fromhex (p[1]); |
| 1212 | } |
| 1213 | } |
| 1214 | |
| 1215 | /* Information about the current target */ |
| 1216 | |
| 1217 | static void |
| 1218 | es1800_files_info (tops) |
| 1219 | struct target_ops *tops; /* Unused */ |
| 1220 | { |
| 1221 | printf ("ES1800 Attached to %s at %d baud in %s mode\n", savename, 19200, |
| 1222 | MODE); |
| 1223 | } |
| 1224 | |
| 1225 | |
| 1226 | /* We read the contents of the target location and stash it, |
| 1227 | then overwrite it with a breakpoint instruction. |
| 1228 | |
| 1229 | addr - is the target location in the target machine. |
| 1230 | contents_cache - is a pointer to memory allocated for saving the target contents. |
| 1231 | It is guaranteed by the caller to be long enough to save sizeof |
| 1232 | BREAKPOINT bytes. |
| 1233 | |
| 1234 | FIXME: This size is target_arch dependent and should be available in |
| 1235 | the target_arch transfer vector, if we ever have one... */ |
| 1236 | |
| 1237 | static int |
| 1238 | es1800_insert_breakpoint (addr, contents_cache) |
| 1239 | CORE_ADDR addr; |
| 1240 | char *contents_cache; |
| 1241 | { |
| 1242 | int val; |
| 1243 | |
| 1244 | val = target_read_memory (addr, contents_cache, sizeof (es1800_break_insn)); |
| 1245 | |
| 1246 | if (val == 0) |
| 1247 | { |
| 1248 | val = target_write_memory (addr, es1800_break_insn, |
| 1249 | sizeof (es1800_break_insn)); |
| 1250 | } |
| 1251 | |
| 1252 | return (val); |
| 1253 | } |
| 1254 | |
| 1255 | |
| 1256 | /* Write back the stashed instruction |
| 1257 | |
| 1258 | addr - is the target location in the target machine. |
| 1259 | contents_cache - is a pointer to memory allocated for saving the target contents. |
| 1260 | It is guaranteed by the caller to be long enough to save sizeof |
| 1261 | BREAKPOINT bytes. */ |
| 1262 | |
| 1263 | static int |
| 1264 | es1800_remove_breakpoint (addr, contents_cache) |
| 1265 | CORE_ADDR addr; |
| 1266 | char *contents_cache; |
| 1267 | { |
| 1268 | |
| 1269 | return (target_write_memory (addr, contents_cache, |
| 1270 | sizeof (es1800_break_insn))); |
| 1271 | } |
| 1272 | |
| 1273 | /* create_break_insn () |
| 1274 | Primitive datastructures containing the es1800 breakpoint instruction */ |
| 1275 | |
| 1276 | static void |
| 1277 | es1800_create_break_insn (ins, vec) |
| 1278 | char *ins; |
| 1279 | int vec; |
| 1280 | { |
| 1281 | if (vec == 15) |
| 1282 | { |
| 1283 | ins[0] = 0x4e; |
| 1284 | ins[1] = 0x4f; |
| 1285 | } |
| 1286 | } |
| 1287 | |
| 1288 | |
| 1289 | /* verify_break () |
| 1290 | Seach for breakpoint routine in emulator memory. |
| 1291 | returns non-zero on failure |
| 1292 | vec - trap vector used for breakpoints */ |
| 1293 | |
| 1294 | static int |
| 1295 | verify_break (vec) |
| 1296 | int vec; |
| 1297 | { |
| 1298 | CORE_ADDR memaddress; |
| 1299 | char buf[8]; |
| 1300 | char *instr = "NqNqNqNs"; /* breakpoint routine */ |
| 1301 | int status; |
| 1302 | |
| 1303 | get_break_addr (vec, &memaddress); |
| 1304 | |
| 1305 | if (memaddress) |
| 1306 | { |
| 1307 | status = target_read_memory (memaddress, buf, 8); |
| 1308 | if (status != 0) |
| 1309 | { |
| 1310 | memory_error (status, memaddress); |
| 1311 | } |
| 1312 | return (STRCMP (instr, buf)); |
| 1313 | } |
| 1314 | return (-1); |
| 1315 | } |
| 1316 | |
| 1317 | |
| 1318 | /* get_break_addr () |
| 1319 | find address of breakpint routine |
| 1320 | vec - trap vector used for breakpoints |
| 1321 | addrp - store the address here */ |
| 1322 | |
| 1323 | static void |
| 1324 | get_break_addr (vec, addrp) |
| 1325 | int vec; |
| 1326 | CORE_ADDR *addrp; |
| 1327 | { |
| 1328 | CORE_ADDR memaddress = 0; |
| 1329 | int status; |
| 1330 | int k; |
| 1331 | char buf[PBUFSIZ]; |
| 1332 | char base_addr[4]; |
| 1333 | char *p; |
| 1334 | |
| 1335 | if (m68020) |
| 1336 | { |
| 1337 | send_with_reply ("VBR ", buf, sizeof (buf)); |
| 1338 | p = buf; |
| 1339 | for (k = 0; k < 4; k++) |
| 1340 | { |
| 1341 | if ((p[k*2 + 1] == 0) || (p[k*2 + 2] == 0)) |
| 1342 | { |
| 1343 | error ("Emulator reply is too short: %s", buf); |
| 1344 | } |
| 1345 | base_addr[k] = (fromhex (p[k*2 + 1]) * 16) + fromhex (p[k*2 + 2]); |
| 1346 | } |
| 1347 | /* base addr of exception vector table */ |
| 1348 | memaddress = *((CORE_ADDR *) base_addr); |
| 1349 | } |
| 1350 | |
| 1351 | memaddress += (vec + 32) * 4; /* address of trap vector */ |
| 1352 | status = target_read_memory (memaddress, (char *) addrp, 4); |
| 1353 | if (status != 0) |
| 1354 | { |
| 1355 | memory_error (status, memaddress); |
| 1356 | } |
| 1357 | } |
| 1358 | |
| 1359 | |
| 1360 | /* Kill an inferior process */ |
| 1361 | |
| 1362 | static void |
| 1363 | es1800_kill () |
| 1364 | { |
| 1365 | if (inferior_pid != 0) |
| 1366 | { |
| 1367 | inferior_pid = 0; |
| 1368 | es1800_mourn_inferior (); |
| 1369 | } |
| 1370 | } |
| 1371 | |
| 1372 | |
| 1373 | /* Load a file to the ES1800 emulator. |
| 1374 | Converts the file from a.out format into Extended Tekhex format |
| 1375 | before the file is loaded. |
| 1376 | Also loads the trap routine, and sets the ES1800 breakpoint on it |
| 1377 | filename - the a.out to be loaded |
| 1378 | from_tty - says whether to be verbose or not |
| 1379 | FIXME Uses emulator overlay memory for trap routine */ |
| 1380 | |
| 1381 | static void |
| 1382 | es1800_load (filename, from_tty) |
| 1383 | char *filename; |
| 1384 | int from_tty; |
| 1385 | { |
| 1386 | |
| 1387 | FILE *instream; |
| 1388 | char loadname[15]; |
| 1389 | char buf[160]; |
| 1390 | struct cleanup *old_chain; |
| 1391 | int es1800_load_format = 5; |
| 1392 | |
| 1393 | if (es1800_desc < 0) |
| 1394 | { |
| 1395 | printf ("No emulator attached, type emulator-command first\n"); |
| 1396 | return; |
| 1397 | } |
| 1398 | |
| 1399 | filename = tilde_expand (filename); |
| 1400 | make_cleanup (free, filename); |
| 1401 | |
| 1402 | switch (es1800_load_format) |
| 1403 | { |
| 1404 | case 2: /* Extended Tekhex */ |
| 1405 | if (from_tty) |
| 1406 | { |
| 1407 | printf ("Converting \"%s\" to Extended Tekhex Format\n", filename); |
| 1408 | } |
| 1409 | sprintf (buf, "tekhex %s", filename); |
| 1410 | system (buf); |
| 1411 | sprintf (loadname, "out.hex"); |
| 1412 | break; |
| 1413 | |
| 1414 | case 5: /* Motorola S-rec */ |
| 1415 | if (from_tty) |
| 1416 | { |
| 1417 | printf ("Converting \"%s\" to Motorola S-record format\n", |
| 1418 | filename); |
| 1419 | } |
| 1420 | /* in the future the source code in copy (part of binutils-1.93) will |
| 1421 | be included in this file */ |
| 1422 | sprintf (buf, |
| 1423 | "copy -s \"a.out-sunos-big\" -d \"srec\" %s /tmp/out.hex", |
| 1424 | filename); |
| 1425 | system (buf); |
| 1426 | sprintf (loadname, "/tmp/out.hex"); |
| 1427 | break; |
| 1428 | |
| 1429 | default: |
| 1430 | error ("Downloading format not defined\n"); |
| 1431 | } |
| 1432 | |
| 1433 | mark_breakpoints_out (); |
| 1434 | inferior_pid = 0; |
| 1435 | if (from_tty) |
| 1436 | { |
| 1437 | printf ("Downloading \"%s\" to the ES 1800\n",filename); |
| 1438 | } |
| 1439 | if ((instream = fopen (loadname, "r")) == NULL) |
| 1440 | { |
| 1441 | perror_with_name ("fopen:"); |
| 1442 | } |
| 1443 | |
| 1444 | old_chain = make_cleanup (fclose, instream); |
| 1445 | immediate_quit++; |
| 1446 | |
| 1447 | es1800_reset (0); |
| 1448 | |
| 1449 | download (instream, from_tty, es1800_load_format); |
| 1450 | |
| 1451 | /* if breakpoint routine is not present anymore we have to check |
| 1452 | whether to download a new breakpoint routine or not */ |
| 1453 | |
| 1454 | if ((verify_break (es1800_break_vec) != 0) |
| 1455 | && query ("No breakpoint routine in ES 1800 emulator!\nDownload a breakpoint routine to the emulator? ")) |
| 1456 | { |
| 1457 | char buf[128]; |
| 1458 | printf ("Using break vector 0x%x\n", es1800_break_vec); |
| 1459 | sprintf (buf, "0x%x ", es1800_break_vec); |
| 1460 | printf ("Give the start address of the breakpoint routine: "); |
| 1461 | fgets (buf + strlen (buf), sizeof (buf) - strlen (buf), stdin); |
| 1462 | es1800_init_break (buf, 0); |
| 1463 | } |
| 1464 | |
| 1465 | do_cleanups (old_chain); |
| 1466 | expect_prompt (); |
| 1467 | readchar (); /* FIXME I am getting a ^G = 7 after the prompt */ |
| 1468 | printf ("\n"); |
| 1469 | |
| 1470 | if (fclose (instream) == EOF) |
| 1471 | { |
| 1472 | ; |
| 1473 | } |
| 1474 | |
| 1475 | if (es1800_load_format != 2) |
| 1476 | { |
| 1477 | sprintf (buf, "/usr/bin/rm %s", loadname); |
| 1478 | system (buf); |
| 1479 | } |
| 1480 | |
| 1481 | symbol_file_command (filename, from_tty); /* reading symbol table */ |
| 1482 | immediate_quit--; |
| 1483 | } |
| 1484 | |
| 1485 | #if 0 |
| 1486 | |
| 1487 | #define NUMCPYBYTES 20 |
| 1488 | |
| 1489 | static void |
| 1490 | bfd_copy (from_bfd, to_bfd) |
| 1491 | bfd *from_bfd; |
| 1492 | bfd *to_bfd; |
| 1493 | { |
| 1494 | asection *p, *new; |
| 1495 | int i; |
| 1496 | char buf[NUMCPYBYTES]; |
| 1497 | |
| 1498 | for (p = from_bfd->sections; p != NULL; p = p->next) |
| 1499 | { |
| 1500 | printf (" Copying section %s. Size = %x.\n", p->name, p->_cooked_size); |
| 1501 | printf (" vma = %x, offset = %x, output_sec = %x\n", |
| 1502 | p->vma, p->output_offset, p->output_section); |
| 1503 | new = bfd_make_section (to_bfd, p->name); |
| 1504 | if (p->_cooked_size && |
| 1505 | !bfd_set_section_size (to_bfd, new, p->_cooked_size)) |
| 1506 | { |
| 1507 | error ("Wrong BFD size!\n"); |
| 1508 | } |
| 1509 | if (!bfd_set_section_flags (to_bfd, new, p->flags)) |
| 1510 | { |
| 1511 | error ("bfd_set_section_flags"); |
| 1512 | } |
| 1513 | new->vma = p->vma; |
| 1514 | |
| 1515 | for (i = 0; (i + NUMCPYBYTES) < p->_cooked_size ; i += NUMCPYBYTES) |
| 1516 | { |
| 1517 | if (!bfd_get_section_contents (from_bfd, p, (PTR) buf, (file_ptr) i, |
| 1518 | (bfd_size_type) NUMCPYBYTES)) |
| 1519 | { |
| 1520 | error ("bfd_get_section_contents\n"); |
| 1521 | } |
| 1522 | if (!bfd_set_section_contents (to_bfd, new, (PTR) buf, (file_ptr) i, |
| 1523 | (bfd_size_type) NUMCPYBYTES)) |
| 1524 | { |
| 1525 | error ("bfd_set_section_contents\n"); |
| 1526 | } |
| 1527 | } |
| 1528 | bfd_get_section_contents (from_bfd, p, (PTR) buf, (file_ptr) i, |
| 1529 | (bfd_size_type) (p->_cooked_size - i)); |
| 1530 | bfd_set_section_contents (to_bfd, new, (PTR) buf,(file_ptr) i, |
| 1531 | (bfd_size_type) (p->_cooked_size - i)); |
| 1532 | } |
| 1533 | } |
| 1534 | |
| 1535 | #endif |
| 1536 | |
| 1537 | /* Start an process on the es1800 and set inferior_pid to the new |
| 1538 | process' pid. |
| 1539 | execfile - the file to run |
| 1540 | args - arguments passed to the program |
| 1541 | env - the environment vector to pass */ |
| 1542 | |
| 1543 | static void |
| 1544 | es1800_create_inferior (execfile, args, env) |
| 1545 | char *execfile; |
| 1546 | char *args; |
| 1547 | char **env; |
| 1548 | { |
| 1549 | int entry_pt; |
| 1550 | int pid; |
| 1551 | #if 0 |
| 1552 | struct expression *expr; |
| 1553 | register struct cleanup *old_chain = 0; |
| 1554 | register value val; |
| 1555 | #endif |
| 1556 | |
| 1557 | if (args && *args) |
| 1558 | { |
| 1559 | error ("Can't pass arguments to remote ES1800 process"); |
| 1560 | } |
| 1561 | |
| 1562 | #if 0 |
| 1563 | if (query ("Use 'start' as entry point? ")) |
| 1564 | { |
| 1565 | expr = parse_c_expression ("start"); |
| 1566 | old_chain = make_cleanup (free_current_contents, &expr); |
| 1567 | val = evaluate_expression (expr); |
| 1568 | entry_pt = (val->location).address; |
| 1569 | } |
| 1570 | else |
| 1571 | { |
| 1572 | printf ("Enter the program's entry point (in hexadecimal): "); |
| 1573 | scanf ("%x", &entry_pt); |
| 1574 | } |
| 1575 | #endif |
| 1576 | |
| 1577 | if (execfile == 0 || exec_bfd == 0) |
| 1578 | { |
| 1579 | error ("No exec file specified"); |
| 1580 | } |
| 1581 | |
| 1582 | entry_pt = (int) bfd_get_start_address (exec_bfd); |
| 1583 | |
| 1584 | pid = 42; |
| 1585 | |
| 1586 | /* Now that we have a child process, make it our target. */ |
| 1587 | |
| 1588 | push_target (&es1800_child_ops); |
| 1589 | |
| 1590 | /* The "process" (board) is already stopped awaiting our commands, and |
| 1591 | the program is already downloaded. We just set its PC and go. */ |
| 1592 | |
| 1593 | inferior_pid = pid; /* Needed for wait_for_inferior below */ |
| 1594 | |
| 1595 | clear_proceed_status (); |
| 1596 | |
| 1597 | /* Tell wait_for_inferior that we've started a new process. */ |
| 1598 | |
| 1599 | init_wait_for_inferior (); |
| 1600 | |
| 1601 | /* Set up the "saved terminal modes" of the inferior |
| 1602 | based on what modes we are starting it with. */ |
| 1603 | |
| 1604 | target_terminal_init (); |
| 1605 | |
| 1606 | /* Install inferior's terminal modes. */ |
| 1607 | |
| 1608 | target_terminal_inferior (); |
| 1609 | |
| 1610 | /* remote_start (args); */ |
| 1611 | /* trap_expected = 0; */ |
| 1612 | /* insert_step_breakpoint (); FIXME, do we need this? */ |
| 1613 | |
| 1614 | proceed ((CORE_ADDR) entry_pt, -1, 0); /* Let 'er rip... */ |
| 1615 | |
| 1616 | } |
| 1617 | |
| 1618 | |
| 1619 | /* The process has died, clean up. */ |
| 1620 | |
| 1621 | static void |
| 1622 | es1800_mourn_inferior () |
| 1623 | { |
| 1624 | remove_breakpoints (); |
| 1625 | unpush_target (&es1800_child_ops); |
| 1626 | generic_mourn_inferior (); /* Do all the proper things now */ |
| 1627 | } |
| 1628 | |
| 1629 | /* ES1800-protocol specific routines */ |
| 1630 | |
| 1631 | /* Keep discarding input from the remote system, until STRING is found. |
| 1632 | Let the user break out immediately. |
| 1633 | string - the string to expect |
| 1634 | nowait - break out if string not the emulator's first respond otherwise |
| 1635 | read until string is found (== 0) */ |
| 1636 | |
| 1637 | static void |
| 1638 | expect (string, nowait) |
| 1639 | char *string; |
| 1640 | int nowait; |
| 1641 | { |
| 1642 | char c; |
| 1643 | char *p = string; |
| 1644 | |
| 1645 | immediate_quit++; |
| 1646 | while (1) |
| 1647 | { |
| 1648 | c = readchar (); |
| 1649 | if (isalpha (c)) |
| 1650 | { |
| 1651 | c = toupper (c); |
| 1652 | } |
| 1653 | if (c == toupper (*p)) |
| 1654 | { |
| 1655 | p++; |
| 1656 | if (*p == '\0') |
| 1657 | { |
| 1658 | immediate_quit--; |
| 1659 | return; |
| 1660 | } |
| 1661 | } |
| 1662 | else if (!nowait) |
| 1663 | { |
| 1664 | p = string; |
| 1665 | } |
| 1666 | else |
| 1667 | { |
| 1668 | printf ("\'%s\' expected\n" , string); |
| 1669 | printf ("char %d is %d", p - string, c); |
| 1670 | error ("\n" ); |
| 1671 | } |
| 1672 | } |
| 1673 | } |
| 1674 | |
| 1675 | /* Keep discarding input until we see the prompt. */ |
| 1676 | |
| 1677 | static void |
| 1678 | expect_prompt () |
| 1679 | { |
| 1680 | expect (">", 0); |
| 1681 | } |
| 1682 | |
| 1683 | |
| 1684 | /* Read one character */ |
| 1685 | |
| 1686 | #ifdef DEBUG_STDIN |
| 1687 | |
| 1688 | /* read from stdin */ |
| 1689 | |
| 1690 | static int |
| 1691 | readchar () |
| 1692 | { |
| 1693 | char buf[1]; |
| 1694 | |
| 1695 | buf[0] = '\0'; |
| 1696 | printf ("readchar, give one character\n"); |
| 1697 | read (0, buf, 1); |
| 1698 | |
| 1699 | #if defined (LOG_FILE) |
| 1700 | putc (buf[0] & 0x7f, log_file); |
| 1701 | #endif |
| 1702 | |
| 1703 | return (buf[0] & 0x7f); |
| 1704 | } |
| 1705 | |
| 1706 | #else /* !DEBUG_STDIN */ |
| 1707 | |
| 1708 | /* Read a character from the remote system, doing all the fancy |
| 1709 | timeout stuff. */ |
| 1710 | |
| 1711 | static int |
| 1712 | readchar () |
| 1713 | { |
| 1714 | char buf[1]; |
| 1715 | |
| 1716 | buf[0] = '\0'; |
| 1717 | |
| 1718 | #ifdef HAVE_TERMIO |
| 1719 | |
| 1720 | /* termio does the timeout for us. */ |
| 1721 | read (es1800_desc, buf, 1); |
| 1722 | |
| 1723 | #else |
| 1724 | |
| 1725 | alarm (timeout); |
| 1726 | while (read (es1800_desc, buf, 1) != 1) |
| 1727 | { |
| 1728 | if (errno == EINTR) |
| 1729 | { |
| 1730 | error ("Timeout reading from remote system."); |
| 1731 | } |
| 1732 | else if (errno != EWOULDBLOCK) |
| 1733 | { |
| 1734 | perror_with_name ("remote read"); |
| 1735 | } |
| 1736 | } |
| 1737 | alarm (0); |
| 1738 | #endif |
| 1739 | |
| 1740 | #if defined (LOG_FILE) |
| 1741 | putc (buf[0] & 0x7f, log_file); |
| 1742 | fflush (log_file); |
| 1743 | #endif |
| 1744 | |
| 1745 | return (buf[0] & 0x7f); |
| 1746 | } |
| 1747 | |
| 1748 | #endif /* DEBUG_STDIN */ |
| 1749 | |
| 1750 | |
| 1751 | /* Send a command to the emulator and save the reply. |
| 1752 | Report an error if we get an error reply. |
| 1753 | string - the es1800 command |
| 1754 | buf - containing the emulator reply on return |
| 1755 | len - size of buf */ |
| 1756 | |
| 1757 | static void |
| 1758 | send_with_reply (string, buf, len) |
| 1759 | char *string, *buf; |
| 1760 | int len; |
| 1761 | { |
| 1762 | send (string); |
| 1763 | write (es1800_desc, "\r", 1); |
| 1764 | |
| 1765 | #ifndef DEBUG_STDIN |
| 1766 | expect (string, 1); |
| 1767 | expect ("\r\n", 0); |
| 1768 | #endif |
| 1769 | |
| 1770 | getmessage (buf, len); |
| 1771 | } |
| 1772 | |
| 1773 | |
| 1774 | /* Send the command in STR to the emulator adding \r. check |
| 1775 | the echo for consistency. |
| 1776 | string - the es1800 command */ |
| 1777 | |
| 1778 | static void |
| 1779 | send_command (string) |
| 1780 | char *string; |
| 1781 | { |
| 1782 | send (string); |
| 1783 | write (es1800_desc, "\r", 1); |
| 1784 | |
| 1785 | #ifndef DEBUG_STDIN |
| 1786 | expect (string, 0); |
| 1787 | expect_prompt (); |
| 1788 | #endif |
| 1789 | |
| 1790 | } |
| 1791 | |
| 1792 | /* Send a string |
| 1793 | string - the es1800 command */ |
| 1794 | |
| 1795 | static void |
| 1796 | send (string) |
| 1797 | char *string; |
| 1798 | { |
| 1799 | if (kiodebug) |
| 1800 | { |
| 1801 | fprintf (stderr, "Sending: %s\n", string); |
| 1802 | } |
| 1803 | write (es1800_desc, string, strlen (string)); |
| 1804 | } |
| 1805 | |
| 1806 | |
| 1807 | /* Read a message from the emulator and store it in BUF. |
| 1808 | buf - containing the emulator reply on return |
| 1809 | len - size of buf */ |
| 1810 | |
| 1811 | static void |
| 1812 | getmessage (buf, len) |
| 1813 | char *buf; |
| 1814 | int len; |
| 1815 | { |
| 1816 | char *bp; |
| 1817 | int c; |
| 1818 | int prompt_found = 0; |
| 1819 | extern kiodebug; |
| 1820 | |
| 1821 | #if defined (LOG_FILE) |
| 1822 | /* This is a convenient place to do this. The idea is to do it often |
| 1823 | enough that we never lose much data if we terminate abnormally. */ |
| 1824 | fflush (log_file); |
| 1825 | #endif |
| 1826 | |
| 1827 | bp = buf; |
| 1828 | c = readchar (); |
| 1829 | do |
| 1830 | { |
| 1831 | if (c) |
| 1832 | { |
| 1833 | if (len-- < 2) /* char and terminaling NULL */ |
| 1834 | { |
| 1835 | error ("input buffer overrun\n"); |
| 1836 | } |
| 1837 | *bp++ = c; |
| 1838 | } |
| 1839 | c = readchar (); |
| 1840 | if ((c == '>') && (*(bp - 1) == ' ')) |
| 1841 | { |
| 1842 | prompt_found = 1; |
| 1843 | } |
| 1844 | } |
| 1845 | while (!prompt_found); |
| 1846 | *bp = 0; |
| 1847 | |
| 1848 | if (kiodebug) |
| 1849 | { |
| 1850 | fprintf (stderr,"message received :%s\n", buf); |
| 1851 | } |
| 1852 | } |
| 1853 | |
| 1854 | static void |
| 1855 | download (instream, from_tty, format) |
| 1856 | FILE *instream; |
| 1857 | int from_tty; |
| 1858 | int format; |
| 1859 | { |
| 1860 | char c; |
| 1861 | char buf[160]; |
| 1862 | int i = 0; |
| 1863 | |
| 1864 | send_command ("SET #2,$1A"); /* reset char = ^Z */ |
| 1865 | send_command ("SET #3,$11,$13"); /* XON XOFF */ |
| 1866 | if (format == 2) |
| 1867 | { |
| 1868 | send_command ("SET #26,#2"); |
| 1869 | } |
| 1870 | else |
| 1871 | { |
| 1872 | send_command ("SET #26,#5"); /* Format=Extended Tekhex */ |
| 1873 | } |
| 1874 | send_command ("DFB = $10"); |
| 1875 | send_command ("PUR"); |
| 1876 | send_command ("CES"); |
| 1877 | send ("DNL\r"); |
| 1878 | expect ("DNL", 1); |
| 1879 | if (from_tty) |
| 1880 | { |
| 1881 | printf (" 0 records loaded...\r"); |
| 1882 | } |
| 1883 | while (fgets (buf, 160, instream)) |
| 1884 | { |
| 1885 | send (buf); |
| 1886 | if (from_tty) |
| 1887 | { |
| 1888 | printf ("%5d\b\b\b\b\b",++i); |
| 1889 | fflush (stdout); |
| 1890 | } |
| 1891 | if ((c = readchar ()) != 006) |
| 1892 | { |
| 1893 | error ("expected ACK"); |
| 1894 | } |
| 1895 | } |
| 1896 | if (from_tty) |
| 1897 | { |
| 1898 | printf ("- All"); |
| 1899 | } |
| 1900 | } |
| 1901 | |
| 1902 | /* Additional commands */ |
| 1903 | |
| 1904 | /* Talk directly to the emulator |
| 1905 | FIXME, uses busy wait, and is SUNOS (or at least BSD) specific */ |
| 1906 | |
| 1907 | /*ARGSUSED*/ |
| 1908 | static void |
| 1909 | es1800_transparent (args, from_tty) |
| 1910 | char *args; |
| 1911 | int from_tty; |
| 1912 | { |
| 1913 | int console; |
| 1914 | struct sgttyb modebl; |
| 1915 | int fcflag; |
| 1916 | int cc; |
| 1917 | struct sgttyb console_mode_save; |
| 1918 | int console_fc_save; |
| 1919 | int es1800_fc_save; |
| 1920 | int inputcnt = 80; |
| 1921 | char inputbuf[80]; |
| 1922 | int consolecnt = 0; |
| 1923 | char consolebuf[80]; |
| 1924 | int es1800_cnt = 0; |
| 1925 | char es1800_buf[80]; |
| 1926 | int i; |
| 1927 | |
| 1928 | dont_repeat (); |
| 1929 | if (es1800_desc < 0) |
| 1930 | { |
| 1931 | printf ("No emulator attached, type emulator-command first\n"); |
| 1932 | return; |
| 1933 | } |
| 1934 | |
| 1935 | printf ("\n"); |
| 1936 | printf ("You are now communicating directly with the ES 1800 emulator.\n"); |
| 1937 | printf ("To leave this mode (transparent mode), press ^E.\n"); |
| 1938 | printf ("\n"); |
| 1939 | printf (" >"); |
| 1940 | fflush (stdout); |
| 1941 | |
| 1942 | if ((console = open ("/dev/tty", O_RDWR)) == -1) |
| 1943 | { |
| 1944 | perror_with_name ("/dev/tty:"); |
| 1945 | } |
| 1946 | |
| 1947 | if ((fcflag = fcntl (console, F_GETFL, 0)) == -1) |
| 1948 | { |
| 1949 | perror_with_name ("fcntl console"); |
| 1950 | } |
| 1951 | |
| 1952 | console_fc_save = fcflag; |
| 1953 | fcflag = fcflag | FNDELAY; |
| 1954 | |
| 1955 | if (fcntl (console, F_SETFL, fcflag) == -1) |
| 1956 | { |
| 1957 | perror_with_name ("fcntl console"); |
| 1958 | } |
| 1959 | |
| 1960 | if (ioctl (console, TIOCGETP, &modebl)) |
| 1961 | { |
| 1962 | perror_with_name ("ioctl console"); |
| 1963 | } |
| 1964 | |
| 1965 | console_mode_save = modebl; |
| 1966 | modebl.sg_flags = RAW; |
| 1967 | |
| 1968 | if (ioctl (console, TIOCSETP, &modebl)) |
| 1969 | { |
| 1970 | perror_with_name ("ioctl console"); |
| 1971 | } |
| 1972 | |
| 1973 | if ((fcflag = fcntl (es1800_desc, F_GETFL, 0)) == -1) |
| 1974 | { |
| 1975 | perror_with_name ("fcntl serial"); |
| 1976 | } |
| 1977 | |
| 1978 | es1800_fc_save = fcflag; |
| 1979 | fcflag = fcflag | FNDELAY; |
| 1980 | |
| 1981 | if (fcntl (es1800_desc, F_SETFL, fcflag) == -1) |
| 1982 | { |
| 1983 | perror_with_name ("fcntl serial"); |
| 1984 | } |
| 1985 | |
| 1986 | while (1) |
| 1987 | { |
| 1988 | cc = read (console, inputbuf, inputcnt); |
| 1989 | if (cc != -1) |
| 1990 | { |
| 1991 | if ((*inputbuf & 0x7f) == 0x05) |
| 1992 | { |
| 1993 | break; |
| 1994 | } |
| 1995 | for (i = 0; i < cc; ) |
| 1996 | { |
| 1997 | es1800_buf[es1800_cnt++] = inputbuf[i++]; |
| 1998 | } |
| 1999 | if ((cc = write (es1800_desc, es1800_buf, es1800_cnt)) == -1) |
| 2000 | { |
| 2001 | perror_with_name ("FEL! read:"); |
| 2002 | } |
| 2003 | es1800_cnt -= cc; |
| 2004 | if (es1800_cnt && cc) |
| 2005 | { |
| 2006 | for (i = 0; i < es1800_cnt; i++) |
| 2007 | { |
| 2008 | es1800_buf[i] = es1800_buf[cc+i]; |
| 2009 | } |
| 2010 | } |
| 2011 | } |
| 2012 | else if (errno != EWOULDBLOCK) |
| 2013 | { |
| 2014 | perror_with_name ("FEL! read:"); |
| 2015 | } |
| 2016 | |
| 2017 | cc = read (es1800_desc,inputbuf,inputcnt); |
| 2018 | if (cc != -1) |
| 2019 | { |
| 2020 | for (i = 0; i < cc; ) |
| 2021 | { |
| 2022 | consolebuf[consolecnt++] = inputbuf[i++]; |
| 2023 | } |
| 2024 | if ((cc = write (console,consolebuf,consolecnt)) == -1) |
| 2025 | { |
| 2026 | perror_with_name ("FEL! write:"); |
| 2027 | } |
| 2028 | consolecnt -= cc; |
| 2029 | if (consolecnt && cc) |
| 2030 | { |
| 2031 | for (i = 0; i < consolecnt; i++) |
| 2032 | { |
| 2033 | consolebuf[i] = consolebuf[cc+i]; |
| 2034 | } |
| 2035 | } |
| 2036 | } |
| 2037 | else if (errno != EWOULDBLOCK) |
| 2038 | { |
| 2039 | perror_with_name ("FEL! read:"); |
| 2040 | } |
| 2041 | } |
| 2042 | |
| 2043 | console_fc_save = console_fc_save & !FNDELAY; |
| 2044 | if (fcntl (console, F_SETFL, console_fc_save) == -1) |
| 2045 | { |
| 2046 | perror_with_name ("FEL! fcntl"); |
| 2047 | } |
| 2048 | |
| 2049 | if (ioctl (console, TIOCSETP, &console_mode_save)) |
| 2050 | { |
| 2051 | perror_with_name ("FEL! ioctl"); |
| 2052 | } |
| 2053 | |
| 2054 | close (console); |
| 2055 | |
| 2056 | if (fcntl (es1800_desc, F_SETFL, es1800_fc_save) == -1) |
| 2057 | { |
| 2058 | perror_with_name ("FEL! fcntl"); |
| 2059 | } |
| 2060 | |
| 2061 | printf ("\n"); |
| 2062 | |
| 2063 | } |
| 2064 | |
| 2065 | static void |
| 2066 | es1800_init_break (args, from_tty) |
| 2067 | char *args; |
| 2068 | int from_tty; |
| 2069 | { |
| 2070 | CORE_ADDR memaddress = 0; |
| 2071 | char buf[PBUFSIZ]; |
| 2072 | char base_addr[4]; |
| 2073 | char *space_index; |
| 2074 | char *p; |
| 2075 | int k; |
| 2076 | |
| 2077 | if (args == NULL) |
| 2078 | { |
| 2079 | error_no_arg ("a trap vector"); |
| 2080 | } |
| 2081 | |
| 2082 | if (!(space_index = strchr (args, ' '))) |
| 2083 | { |
| 2084 | error ("Two arguments needed (trap vector and address of break routine).\n"); |
| 2085 | } |
| 2086 | |
| 2087 | *space_index = '\0'; |
| 2088 | |
| 2089 | es1800_break_vec = strtol (args, (char **) NULL, 0); |
| 2090 | es1800_break_address = parse_and_eval_address (space_index + 1); |
| 2091 | |
| 2092 | es1800_create_break_insn (es1800_break_insn, es1800_break_vec); |
| 2093 | |
| 2094 | if (m68020) |
| 2095 | { |
| 2096 | send_with_reply ("VBR ", buf, sizeof (buf)); |
| 2097 | p = buf; |
| 2098 | for (k = 0; k < 4; k++) |
| 2099 | { |
| 2100 | if ((p[k*2 + 1] == 0) || (p[k*2 + 2] == 0)) |
| 2101 | { |
| 2102 | error ("Emulator reply is too short: %s", buf); |
| 2103 | } |
| 2104 | base_addr[k] = (fromhex (p[k*2 + 1]) * 16) + fromhex (p[k*2 + 2]); |
| 2105 | } |
| 2106 | /* base addr of exception vector table */ |
| 2107 | memaddress = *((CORE_ADDR *) base_addr); |
| 2108 | } |
| 2109 | |
| 2110 | memaddress += (es1800_break_vec + 32) * 4; /* address of trap vector */ |
| 2111 | |
| 2112 | sprintf (buf, "@.L%lx=$%lx", memaddress, es1800_break_address); |
| 2113 | send_command (buf); /* set the address of the break routine in the */ |
| 2114 | /* trap vector */ |
| 2115 | |
| 2116 | sprintf (buf, "@.L%lx=$4E714E71", es1800_break_address); /* NOP; NOP */ |
| 2117 | send_command (buf); |
| 2118 | sprintf (buf, "@.L%lx=$4E714E73", es1800_break_address + 4); /* NOP; RTE */ |
| 2119 | send_command (buf); |
| 2120 | |
| 2121 | sprintf (buf, "AC2=$%lx", es1800_break_address + 4); |
| 2122 | /* breakpoint at es1800-break_address */ |
| 2123 | send_command (buf); |
| 2124 | send_command ("WHEN AC2 THEN BRK"); /* ie in exception routine */ |
| 2125 | |
| 2126 | if (from_tty) |
| 2127 | { |
| 2128 | printf ("Breakpoint (trap $%x) routine at address: %lx\n", |
| 2129 | es1800_break_vec, es1800_break_address); |
| 2130 | } |
| 2131 | } |
| 2132 | |
| 2133 | static void |
| 2134 | es1800_child_open (arg, from_tty) |
| 2135 | char *arg; |
| 2136 | int from_tty; |
| 2137 | { |
| 2138 | error ("Use the \"run\" command to start a child process."); |
| 2139 | } |
| 2140 | |
| 2141 | static void |
| 2142 | es1800_child_detach (args, from_tty) |
| 2143 | char *args; |
| 2144 | int from_tty; |
| 2145 | { |
| 2146 | if (args) |
| 2147 | { |
| 2148 | error ("Argument given to \"detach\" when remotely debugging."); |
| 2149 | } |
| 2150 | |
| 2151 | pop_target (); |
| 2152 | if (from_tty) |
| 2153 | { |
| 2154 | printf ("Ending debugging the process %d.\n", inferior_pid); |
| 2155 | } |
| 2156 | } |
| 2157 | |
| 2158 | |
| 2159 | /* Define the target subroutine names */ |
| 2160 | |
| 2161 | static struct target_ops es1800_ops = |
| 2162 | { |
| 2163 | "es1800", /* to_shortname */ |
| 2164 | /* to_longname */ |
| 2165 | "Remote serial target in ES1800-emulator protocol", |
| 2166 | /* to_doc */ |
| 2167 | "Remote debugging on the es1800 emulator via a serial line.\n\ |
| 2168 | Specify the serial device it is connected to (e.g. /dev/ttya).", |
| 2169 | es1800_open, /* to_open */ |
| 2170 | es1800_close, /* to_close */ |
| 2171 | es1800_attach, /* to_attach */ |
| 2172 | es1800_detach, /* to_detach */ |
| 2173 | es1800_resume, /* to_resume */ |
| 2174 | NULL, /* to_wait */ |
| 2175 | NULL, /* to_fetch_registers */ |
| 2176 | NULL, /* to_store_registers */ |
| 2177 | es1800_prepare_to_store, /* to_prepare_to_store */ |
| 2178 | es1800_xfer_inferior_memory, /* to_xfer_memory */ |
| 2179 | es1800_files_info, /* to_files_info */ |
| 2180 | es1800_insert_breakpoint, /* to_insert_breakpoint */ |
| 2181 | es1800_remove_breakpoint, /* to_remove_breakpoint */ |
| 2182 | NULL, /* to_terminal_init */ |
| 2183 | NULL, /* to_terminal_inferior */ |
| 2184 | NULL, /* to_terminal_ours_for_output */ |
| 2185 | NULL, /* to_terminal_ours */ |
| 2186 | NULL, /* to_terminal_info */ |
| 2187 | NULL, /* to_kill */ |
| 2188 | es1800_load, /* to_load */ |
| 2189 | NULL, /* to_lookup_symbol */ |
| 2190 | es1800_create_inferior, /* to_create_inferior */ |
| 2191 | NULL, /* to_mourn_inferior */ |
| 2192 | 0, /* to_can_run */ |
| 2193 | 0, /* notice_signals */ |
| 2194 | core_stratum, /* to_stratum */ |
| 2195 | 0, /* to_next */ |
| 2196 | 0, /* to_has_all_memory */ |
| 2197 | 1, /* to_has_memory */ |
| 2198 | 0, /* to_has_stack */ |
| 2199 | 0, /* to_has_registers */ |
| 2200 | 0, /* to_has_execution */ |
| 2201 | NULL, /* to_sections */ |
| 2202 | NULL, /* to_sections_end */ |
| 2203 | OPS_MAGIC /* to_magic (always last) */ |
| 2204 | }; |
| 2205 | |
| 2206 | /* Define the target subroutine names */ |
| 2207 | |
| 2208 | static struct target_ops es1800_child_ops = |
| 2209 | { |
| 2210 | "es1800_process", /* to_shortname */ |
| 2211 | /* to_longname */ |
| 2212 | "Remote serial target in ES1800-emulator protocol", |
| 2213 | /* to_doc */ |
| 2214 | "Remote debugging on the es1800 emulator via a serial line.\n\ |
| 2215 | Specify the serial device it is connected to (e.g. /dev/ttya).", |
| 2216 | es1800_child_open, /* to_open */ |
| 2217 | NULL, /* to_close */ |
| 2218 | es1800_attach, /* to_attach */ |
| 2219 | es1800_child_detach, /* to_detach */ |
| 2220 | es1800_resume, /* to_resume */ |
| 2221 | es1800_wait, /* to_wait */ |
| 2222 | es1800_fetch_register, /* to_fetch_registers */ |
| 2223 | es1800_store_register, /* to_store_registers */ |
| 2224 | es1800_prepare_to_store, /* to_prepare_to_store */ |
| 2225 | es1800_xfer_inferior_memory, /* to_xfer_memory */ |
| 2226 | es1800_files_info, /* to_files_info */ |
| 2227 | es1800_insert_breakpoint, /* to_insert_breakpoint */ |
| 2228 | es1800_remove_breakpoint, /* to_remove_breakpoint */ |
| 2229 | NULL, /* to_terminal_init */ |
| 2230 | NULL, /* to_terminal_inferior */ |
| 2231 | NULL, /* to_terminal_ours_for_output */ |
| 2232 | NULL, /* to_terminal_ours */ |
| 2233 | NULL, /* to_terminal_info */ |
| 2234 | es1800_kill, /* to_kill */ |
| 2235 | es1800_load, /* to_load */ |
| 2236 | NULL, /* to_lookup_symbol */ |
| 2237 | es1800_create_inferior, /* to_create_inferior */ |
| 2238 | es1800_mourn_inferior, /* to_mourn_inferior */ |
| 2239 | 0, /* to_can_run */ |
| 2240 | 0, /* notice_signals */ |
| 2241 | process_stratum, /* to_stratum */ |
| 2242 | 0, /* to_next */ |
| 2243 | 1, /* to_has_all_memory */ |
| 2244 | 1, /* to_has_memory */ |
| 2245 | 1, /* to_has_stack */ |
| 2246 | 1, /* to_has_registers */ |
| 2247 | 1, /* to_has_execution */ |
| 2248 | NULL, /* to_sections */ |
| 2249 | NULL, /* to_sections_end */ |
| 2250 | OPS_MAGIC /* to_magic (always last) */ |
| 2251 | }; |
| 2252 | |
| 2253 | /* _initialize_es1800 () */ |
| 2254 | |
| 2255 | void |
| 2256 | _initialize_es1800 () |
| 2257 | { |
| 2258 | add_target (&es1800_ops); |
| 2259 | add_target (&es1800_child_ops); |
| 2260 | add_com ("transparent", class_support, es1800_transparent, |
| 2261 | "Start transparent communication with the ES 1800 emulator."); |
| 2262 | add_com ("init_break", class_support, es1800_init_break, |
| 2263 | "Download break routine and initialize break facility on ES 1800"); |
| 2264 | } |