| 1 | /* Target dependent code for the Fujitsu SPARClite for GDB, the GNU debugger. |
| 2 | Copyright 1994, 1995, 1996, 1999 Free Software Foundation, Inc. |
| 3 | |
| 4 | This file is part of GDB. |
| 5 | |
| 6 | This program is free software; you can redistribute it and/or modify |
| 7 | it under the terms of the GNU General Public License as published by |
| 8 | the Free Software Foundation; either version 2 of the License, or |
| 9 | (at your option) any later version. |
| 10 | |
| 11 | This program is distributed in the hope that it will be useful, |
| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | GNU General Public License for more details. |
| 15 | |
| 16 | You should have received a copy of the GNU General Public License |
| 17 | along with this program; if not, write to the Free Software |
| 18 | Foundation, Inc., 59 Temple Place - Suite 330, |
| 19 | Boston, MA 02111-1307, USA. */ |
| 20 | |
| 21 | #include "defs.h" |
| 22 | #include "gdbcore.h" |
| 23 | #include "breakpoint.h" |
| 24 | #include "target.h" |
| 25 | #include "serial.h" |
| 26 | #include <sys/types.h> |
| 27 | |
| 28 | #if (!defined(__GO32__) && !defined(_WIN32)) || defined(__CYGWIN32__) |
| 29 | #define HAVE_SOCKETS |
| 30 | #include <sys/time.h> |
| 31 | #include <sys/socket.h> |
| 32 | #include <netinet/in.h> |
| 33 | #include <netdb.h> |
| 34 | #endif |
| 35 | |
| 36 | static struct target_ops sparclite_ops; |
| 37 | |
| 38 | static char *remote_target_name = NULL; |
| 39 | static serial_t remote_desc = NULL; |
| 40 | static int serial_flag; |
| 41 | #ifdef HAVE_SOCKETS |
| 42 | static int udp_fd = -1; |
| 43 | #endif |
| 44 | |
| 45 | static serial_t open_tty (char *name); |
| 46 | static int send_resp (serial_t desc, char c); |
| 47 | static void close_tty (void * ignore); |
| 48 | #ifdef HAVE_SOCKETS |
| 49 | static int recv_udp_buf (int fd, unsigned char *buf, int len, int timeout); |
| 50 | static int send_udp_buf (int fd, unsigned char *buf, int len); |
| 51 | #endif |
| 52 | static void sparclite_open (char *name, int from_tty); |
| 53 | static void sparclite_close (int quitting); |
| 54 | static void download (char *target_name, char *args, int from_tty, |
| 55 | void (*write_routine) (bfd * from_bfd, |
| 56 | asection * from_sec, |
| 57 | file_ptr from_addr, |
| 58 | bfd_vma to_addr, int len), |
| 59 | void (*start_routine) (bfd_vma entry)); |
| 60 | static void sparclite_serial_start (bfd_vma entry); |
| 61 | static void sparclite_serial_write (bfd * from_bfd, asection * from_sec, |
| 62 | file_ptr from_addr, |
| 63 | bfd_vma to_addr, int len); |
| 64 | #ifdef HAVE_SOCKETS |
| 65 | static unsigned short calc_checksum (unsigned char *buffer, int count); |
| 66 | static void sparclite_udp_start (bfd_vma entry); |
| 67 | static void sparclite_udp_write (bfd * from_bfd, asection * from_sec, |
| 68 | file_ptr from_addr, bfd_vma to_addr, |
| 69 | int len); |
| 70 | #endif |
| 71 | static void sparclite_download (char *filename, int from_tty); |
| 72 | |
| 73 | #define DDA2_SUP_ASI 0xb000000 |
| 74 | #define DDA1_SUP_ASI 0xb0000 |
| 75 | |
| 76 | #define DDA2_ASI_MASK 0xff000000 |
| 77 | #define DDA1_ASI_MASK 0xff0000 |
| 78 | #define DIA2_SUP_MODE 0x8000 |
| 79 | #define DIA1_SUP_MODE 0x4000 |
| 80 | #define DDA2_ENABLE 0x100 |
| 81 | #define DDA1_ENABLE 0x80 |
| 82 | #define DIA2_ENABLE 0x40 |
| 83 | #define DIA1_ENABLE 0x20 |
| 84 | #define DSINGLE_STEP 0x10 /* not used */ |
| 85 | #define DDV_TYPE_MASK 0xc |
| 86 | #define DDV_TYPE_LOAD 0x0 |
| 87 | #define DDV_TYPE_STORE 0x4 |
| 88 | #define DDV_TYPE_ACCESS 0x8 |
| 89 | #define DDV_TYPE_ALWAYS 0xc |
| 90 | #define DDV_COND 0x2 |
| 91 | #define DDV_MASK 0x1 |
| 92 | |
| 93 | int |
| 94 | sparclite_insert_watchpoint (CORE_ADDR addr, int len, int type) |
| 95 | { |
| 96 | CORE_ADDR dcr; |
| 97 | |
| 98 | dcr = read_register (DCR_REGNUM); |
| 99 | |
| 100 | if (!(dcr & DDA1_ENABLE)) |
| 101 | { |
| 102 | write_register (DDA1_REGNUM, addr); |
| 103 | dcr &= ~(DDA1_ASI_MASK | DDV_TYPE_MASK); |
| 104 | dcr |= (DDA1_SUP_ASI | DDA1_ENABLE); |
| 105 | if (type == 1) |
| 106 | { |
| 107 | write_register (DDV1_REGNUM, 0); |
| 108 | write_register (DDV2_REGNUM, 0xffffffff); |
| 109 | dcr |= (DDV_TYPE_LOAD & (~DDV_COND & ~DDV_MASK)); |
| 110 | } |
| 111 | else if (type == 0) |
| 112 | { |
| 113 | write_register (DDV1_REGNUM, 0); |
| 114 | write_register (DDV2_REGNUM, 0xffffffff); |
| 115 | dcr |= (DDV_TYPE_STORE & (~DDV_COND & ~DDV_MASK)); |
| 116 | } |
| 117 | else |
| 118 | { |
| 119 | write_register (DDV1_REGNUM, 0); |
| 120 | write_register (DDV2_REGNUM, 0xffffffff); |
| 121 | dcr |= (DDV_TYPE_ACCESS); |
| 122 | } |
| 123 | write_register (DCR_REGNUM, dcr); |
| 124 | } |
| 125 | else if (!(dcr & DDA2_ENABLE)) |
| 126 | { |
| 127 | write_register (DDA2_REGNUM, addr); |
| 128 | dcr &= ~(DDA2_ASI_MASK & DDV_TYPE_MASK); |
| 129 | dcr |= (DDA2_SUP_ASI | DDA2_ENABLE); |
| 130 | if (type == 1) |
| 131 | { |
| 132 | write_register (DDV1_REGNUM, 0); |
| 133 | write_register (DDV2_REGNUM, 0xffffffff); |
| 134 | dcr |= (DDV_TYPE_LOAD & ~DDV_COND & ~DDV_MASK); |
| 135 | } |
| 136 | else if (type == 0) |
| 137 | { |
| 138 | write_register (DDV1_REGNUM, 0); |
| 139 | write_register (DDV2_REGNUM, 0xffffffff); |
| 140 | dcr |= (DDV_TYPE_STORE & ~DDV_COND & ~DDV_MASK); |
| 141 | } |
| 142 | else |
| 143 | { |
| 144 | write_register (DDV1_REGNUM, 0); |
| 145 | write_register (DDV2_REGNUM, 0xffffffff); |
| 146 | dcr |= (DDV_TYPE_ACCESS); |
| 147 | } |
| 148 | write_register (DCR_REGNUM, dcr); |
| 149 | } |
| 150 | else |
| 151 | return -1; |
| 152 | |
| 153 | return 0; |
| 154 | } |
| 155 | |
| 156 | int |
| 157 | sparclite_remove_watchpoint (CORE_ADDR addr, int len, int type) |
| 158 | { |
| 159 | CORE_ADDR dcr, dda1, dda2; |
| 160 | |
| 161 | dcr = read_register (DCR_REGNUM); |
| 162 | dda1 = read_register (DDA1_REGNUM); |
| 163 | dda2 = read_register (DDA2_REGNUM); |
| 164 | |
| 165 | if ((dcr & DDA1_ENABLE) && addr == dda1) |
| 166 | write_register (DCR_REGNUM, (dcr & ~DDA1_ENABLE)); |
| 167 | else if ((dcr & DDA2_ENABLE) && addr == dda2) |
| 168 | write_register (DCR_REGNUM, (dcr & ~DDA2_ENABLE)); |
| 169 | else |
| 170 | return -1; |
| 171 | |
| 172 | return 0; |
| 173 | } |
| 174 | |
| 175 | int |
| 176 | sparclite_insert_hw_breakpoint (CORE_ADDR addr, int len) |
| 177 | { |
| 178 | CORE_ADDR dcr; |
| 179 | |
| 180 | dcr = read_register (DCR_REGNUM); |
| 181 | |
| 182 | if (!(dcr & DIA1_ENABLE)) |
| 183 | { |
| 184 | write_register (DIA1_REGNUM, addr); |
| 185 | write_register (DCR_REGNUM, (dcr | DIA1_ENABLE | DIA1_SUP_MODE)); |
| 186 | } |
| 187 | else if (!(dcr & DIA2_ENABLE)) |
| 188 | { |
| 189 | write_register (DIA2_REGNUM, addr); |
| 190 | write_register (DCR_REGNUM, (dcr | DIA2_ENABLE | DIA2_SUP_MODE)); |
| 191 | } |
| 192 | else |
| 193 | return -1; |
| 194 | |
| 195 | return 0; |
| 196 | } |
| 197 | |
| 198 | int |
| 199 | sparclite_remove_hw_breakpoint (CORE_ADDR addr, int shadow) |
| 200 | { |
| 201 | CORE_ADDR dcr, dia1, dia2; |
| 202 | |
| 203 | dcr = read_register (DCR_REGNUM); |
| 204 | dia1 = read_register (DIA1_REGNUM); |
| 205 | dia2 = read_register (DIA2_REGNUM); |
| 206 | |
| 207 | if ((dcr & DIA1_ENABLE) && addr == dia1) |
| 208 | write_register (DCR_REGNUM, (dcr & ~DIA1_ENABLE)); |
| 209 | else if ((dcr & DIA2_ENABLE) && addr == dia2) |
| 210 | write_register (DCR_REGNUM, (dcr & ~DIA2_ENABLE)); |
| 211 | else |
| 212 | return -1; |
| 213 | |
| 214 | return 0; |
| 215 | } |
| 216 | |
| 217 | int |
| 218 | sparclite_check_watch_resources (int type, int cnt, int ot) |
| 219 | { |
| 220 | /* Watchpoints not supported on simulator. */ |
| 221 | if (strcmp (target_shortname, "sim") == 0) |
| 222 | return 0; |
| 223 | |
| 224 | if (type == bp_hardware_breakpoint) |
| 225 | { |
| 226 | if (TARGET_HW_BREAK_LIMIT == 0) |
| 227 | return 0; |
| 228 | else if (cnt <= TARGET_HW_BREAK_LIMIT) |
| 229 | return 1; |
| 230 | } |
| 231 | else |
| 232 | { |
| 233 | if (TARGET_HW_WATCH_LIMIT == 0) |
| 234 | return 0; |
| 235 | else if (ot) |
| 236 | return -1; |
| 237 | else if (cnt <= TARGET_HW_WATCH_LIMIT) |
| 238 | return 1; |
| 239 | } |
| 240 | return -1; |
| 241 | } |
| 242 | |
| 243 | CORE_ADDR |
| 244 | sparclite_stopped_data_address (void) |
| 245 | { |
| 246 | CORE_ADDR dsr, dda1, dda2; |
| 247 | |
| 248 | dsr = read_register (DSR_REGNUM); |
| 249 | dda1 = read_register (DDA1_REGNUM); |
| 250 | dda2 = read_register (DDA2_REGNUM); |
| 251 | |
| 252 | if (dsr & 0x10) |
| 253 | return dda1; |
| 254 | else if (dsr & 0x20) |
| 255 | return dda2; |
| 256 | else |
| 257 | return 0; |
| 258 | } |
| 259 | \f |
| 260 | static serial_t |
| 261 | open_tty (char *name) |
| 262 | { |
| 263 | serial_t desc; |
| 264 | |
| 265 | desc = SERIAL_OPEN (name); |
| 266 | if (!desc) |
| 267 | perror_with_name (name); |
| 268 | |
| 269 | if (baud_rate != -1) |
| 270 | { |
| 271 | if (SERIAL_SETBAUDRATE (desc, baud_rate)) |
| 272 | { |
| 273 | SERIAL_CLOSE (desc); |
| 274 | perror_with_name (name); |
| 275 | } |
| 276 | } |
| 277 | |
| 278 | SERIAL_RAW (desc); |
| 279 | |
| 280 | SERIAL_FLUSH_INPUT (desc); |
| 281 | |
| 282 | return desc; |
| 283 | } |
| 284 | |
| 285 | /* Read a single character from the remote end, masking it down to 7 bits. */ |
| 286 | |
| 287 | static int |
| 288 | readchar (serial_t desc, int timeout) |
| 289 | { |
| 290 | int ch; |
| 291 | char s[10]; |
| 292 | |
| 293 | ch = SERIAL_READCHAR (desc, timeout); |
| 294 | |
| 295 | switch (ch) |
| 296 | { |
| 297 | case SERIAL_EOF: |
| 298 | error ("SPARClite remote connection closed"); |
| 299 | case SERIAL_ERROR: |
| 300 | perror_with_name ("SPARClite communication error"); |
| 301 | case SERIAL_TIMEOUT: |
| 302 | error ("SPARClite remote timeout"); |
| 303 | default: |
| 304 | if (remote_debug > 0) |
| 305 | { |
| 306 | sprintf (s, "[%02x]", ch & 0xff); |
| 307 | puts_debug ("read -->", s, "<--"); |
| 308 | } |
| 309 | return ch; |
| 310 | } |
| 311 | } |
| 312 | |
| 313 | static void |
| 314 | debug_serial_write (serial_t desc, char *buf, int len) |
| 315 | { |
| 316 | char s[10]; |
| 317 | |
| 318 | SERIAL_WRITE (desc, buf, len); |
| 319 | if (remote_debug > 0) |
| 320 | { |
| 321 | while (len-- > 0) |
| 322 | { |
| 323 | sprintf (s, "[%02x]", *buf & 0xff); |
| 324 | puts_debug ("Sent -->", s, "<--"); |
| 325 | buf++; |
| 326 | } |
| 327 | } |
| 328 | } |
| 329 | |
| 330 | |
| 331 | static int |
| 332 | send_resp (serial_t desc, char c) |
| 333 | { |
| 334 | debug_serial_write (desc, &c, 1); |
| 335 | return readchar (desc, remote_timeout); |
| 336 | } |
| 337 | |
| 338 | static void |
| 339 | close_tty (void *ignore) |
| 340 | { |
| 341 | if (!remote_desc) |
| 342 | return; |
| 343 | |
| 344 | SERIAL_CLOSE (remote_desc); |
| 345 | |
| 346 | remote_desc = NULL; |
| 347 | } |
| 348 | |
| 349 | #ifdef HAVE_SOCKETS |
| 350 | static int |
| 351 | recv_udp_buf (int fd, unsigned char *buf, int len, int timeout) |
| 352 | { |
| 353 | int cc; |
| 354 | fd_set readfds; |
| 355 | |
| 356 | FD_ZERO (&readfds); |
| 357 | FD_SET (fd, &readfds); |
| 358 | |
| 359 | if (timeout >= 0) |
| 360 | { |
| 361 | struct timeval timebuf; |
| 362 | |
| 363 | timebuf.tv_sec = timeout; |
| 364 | timebuf.tv_usec = 0; |
| 365 | cc = select (fd + 1, &readfds, 0, 0, &timebuf); |
| 366 | } |
| 367 | else |
| 368 | cc = select (fd + 1, &readfds, 0, 0, 0); |
| 369 | |
| 370 | if (cc == 0) |
| 371 | return 0; |
| 372 | |
| 373 | if (cc != 1) |
| 374 | perror_with_name ("recv_udp_buf: Bad return value from select:"); |
| 375 | |
| 376 | cc = recv (fd, buf, len, 0); |
| 377 | |
| 378 | if (cc < 0) |
| 379 | perror_with_name ("Got an error from recv: "); |
| 380 | } |
| 381 | |
| 382 | static int |
| 383 | send_udp_buf (int fd, unsigned char *buf, int len) |
| 384 | { |
| 385 | int cc; |
| 386 | |
| 387 | cc = send (fd, buf, len, 0); |
| 388 | |
| 389 | if (cc == len) |
| 390 | return; |
| 391 | |
| 392 | if (cc < 0) |
| 393 | perror_with_name ("Got an error from send: "); |
| 394 | |
| 395 | error ("Short count in send: tried %d, sent %d\n", len, cc); |
| 396 | } |
| 397 | #endif /* HAVE_SOCKETS */ |
| 398 | |
| 399 | static void |
| 400 | sparclite_open (char *name, int from_tty) |
| 401 | { |
| 402 | struct cleanup *old_chain; |
| 403 | int c; |
| 404 | char *p; |
| 405 | |
| 406 | if (!name) |
| 407 | error ("You need to specify what device or hostname is associated with the SparcLite board."); |
| 408 | |
| 409 | target_preopen (from_tty); |
| 410 | |
| 411 | unpush_target (&sparclite_ops); |
| 412 | |
| 413 | if (remote_target_name) |
| 414 | xfree (remote_target_name); |
| 415 | |
| 416 | remote_target_name = strsave (name); |
| 417 | |
| 418 | /* We need a 'serial' or 'udp' keyword to disambiguate host:port, which can |
| 419 | mean either a serial port on a terminal server, or the IP address of a |
| 420 | SPARClite demo board. If there's no colon, then it pretty much has to be |
| 421 | a local device (except for DOS... grrmble) */ |
| 422 | |
| 423 | p = strchr (name, ' '); |
| 424 | |
| 425 | if (p) |
| 426 | { |
| 427 | *p++ = '\000'; |
| 428 | while ((*p != '\000') && isspace (*p)) |
| 429 | p++; |
| 430 | |
| 431 | if (strncmp (name, "serial", strlen (name)) == 0) |
| 432 | serial_flag = 1; |
| 433 | else if (strncmp (name, "udp", strlen (name)) == 0) |
| 434 | serial_flag = 0; |
| 435 | else |
| 436 | error ("Must specify either `serial' or `udp'."); |
| 437 | } |
| 438 | else |
| 439 | { |
| 440 | p = name; |
| 441 | |
| 442 | if (!strchr (name, ':')) |
| 443 | serial_flag = 1; /* No colon is unambiguous (local device) */ |
| 444 | else |
| 445 | error ("Usage: target sparclite serial /dev/ttyb\n\ |
| 446 | or: target sparclite udp host"); |
| 447 | } |
| 448 | |
| 449 | if (serial_flag) |
| 450 | { |
| 451 | remote_desc = open_tty (p); |
| 452 | |
| 453 | old_chain = make_cleanup (close_tty, 0 /*ignore*/); |
| 454 | |
| 455 | c = send_resp (remote_desc, 0x00); |
| 456 | |
| 457 | if (c != 0xaa) |
| 458 | error ("Unknown response (0x%x) from SparcLite. Try resetting the board.", |
| 459 | c); |
| 460 | |
| 461 | c = send_resp (remote_desc, 0x55); |
| 462 | |
| 463 | if (c != 0x55) |
| 464 | error ("Sparclite appears to be ill."); |
| 465 | } |
| 466 | else |
| 467 | { |
| 468 | #ifdef HAVE_SOCKETS |
| 469 | struct hostent *he; |
| 470 | struct sockaddr_in sockaddr; |
| 471 | unsigned char buffer[100]; |
| 472 | int cc; |
| 473 | |
| 474 | /* Setup the socket. Must be raw UDP. */ |
| 475 | |
| 476 | he = gethostbyname (p); |
| 477 | |
| 478 | if (!he) |
| 479 | error ("No such host %s.", p); |
| 480 | |
| 481 | udp_fd = socket (PF_INET, SOCK_DGRAM, 0); |
| 482 | |
| 483 | old_chain = make_cleanup (close, udp_fd); |
| 484 | |
| 485 | sockaddr.sin_family = PF_INET; |
| 486 | sockaddr.sin_port = htons (7000); |
| 487 | memcpy (&sockaddr.sin_addr.s_addr, he->h_addr, sizeof (struct in_addr)); |
| 488 | |
| 489 | if (connect (udp_fd, &sockaddr, sizeof (sockaddr))) |
| 490 | perror_with_name ("Connect failed"); |
| 491 | |
| 492 | buffer[0] = 0x5; |
| 493 | buffer[1] = 0; |
| 494 | |
| 495 | send_udp_buf (udp_fd, buffer, 2); /* Request version */ |
| 496 | cc = recv_udp_buf (udp_fd, buffer, sizeof (buffer), 5); /* Get response */ |
| 497 | if (cc == 0) |
| 498 | error ("SPARClite isn't responding."); |
| 499 | |
| 500 | if (cc < 3) |
| 501 | error ("SPARClite appears to be ill."); |
| 502 | #else |
| 503 | error ("UDP downloading is not supported for DOS hosts."); |
| 504 | #endif /* HAVE_SOCKETS */ |
| 505 | } |
| 506 | |
| 507 | printf_unfiltered ("[SPARClite appears to be alive]\n"); |
| 508 | |
| 509 | push_target (&sparclite_ops); |
| 510 | |
| 511 | discard_cleanups (old_chain); |
| 512 | |
| 513 | return; |
| 514 | } |
| 515 | |
| 516 | static void |
| 517 | sparclite_close (int quitting) |
| 518 | { |
| 519 | if (serial_flag) |
| 520 | close_tty (0); |
| 521 | #ifdef HAVE_SOCKETS |
| 522 | else if (udp_fd != -1) |
| 523 | close (udp_fd); |
| 524 | #endif |
| 525 | } |
| 526 | |
| 527 | #define LOAD_ADDRESS 0x40000000 |
| 528 | |
| 529 | static void |
| 530 | download (char *target_name, char *args, int from_tty, |
| 531 | void (*write_routine) (bfd *from_bfd, asection *from_sec, |
| 532 | file_ptr from_addr, bfd_vma to_addr, int len), |
| 533 | void (*start_routine) (bfd_vma entry)) |
| 534 | { |
| 535 | struct cleanup *old_chain; |
| 536 | asection *section; |
| 537 | bfd *pbfd; |
| 538 | bfd_vma entry; |
| 539 | int i; |
| 540 | #define WRITESIZE 1024 |
| 541 | char *filename; |
| 542 | int quiet; |
| 543 | int nostart; |
| 544 | |
| 545 | quiet = 0; |
| 546 | nostart = 0; |
| 547 | filename = NULL; |
| 548 | |
| 549 | while (*args != '\000') |
| 550 | { |
| 551 | char *arg; |
| 552 | |
| 553 | while (isspace (*args)) |
| 554 | args++; |
| 555 | |
| 556 | arg = args; |
| 557 | |
| 558 | while ((*args != '\000') && !isspace (*args)) |
| 559 | args++; |
| 560 | |
| 561 | if (*args != '\000') |
| 562 | *args++ = '\000'; |
| 563 | |
| 564 | if (*arg != '-') |
| 565 | filename = arg; |
| 566 | else if (strncmp (arg, "-quiet", strlen (arg)) == 0) |
| 567 | quiet = 1; |
| 568 | else if (strncmp (arg, "-nostart", strlen (arg)) == 0) |
| 569 | nostart = 1; |
| 570 | else |
| 571 | error ("unknown option `%s'", arg); |
| 572 | } |
| 573 | |
| 574 | if (!filename) |
| 575 | filename = get_exec_file (1); |
| 576 | |
| 577 | pbfd = bfd_openr (filename, gnutarget); |
| 578 | if (pbfd == NULL) |
| 579 | { |
| 580 | perror_with_name (filename); |
| 581 | return; |
| 582 | } |
| 583 | old_chain = make_cleanup_bfd_close (pbfd); |
| 584 | |
| 585 | if (!bfd_check_format (pbfd, bfd_object)) |
| 586 | error ("\"%s\" is not an object file: %s", filename, |
| 587 | bfd_errmsg (bfd_get_error ())); |
| 588 | |
| 589 | for (section = pbfd->sections; section; section = section->next) |
| 590 | { |
| 591 | if (bfd_get_section_flags (pbfd, section) & SEC_LOAD) |
| 592 | { |
| 593 | bfd_vma section_address; |
| 594 | bfd_size_type section_size; |
| 595 | file_ptr fptr; |
| 596 | const char *section_name; |
| 597 | |
| 598 | section_name = bfd_get_section_name (pbfd, section); |
| 599 | |
| 600 | section_address = bfd_get_section_vma (pbfd, section); |
| 601 | |
| 602 | /* Adjust sections from a.out files, since they don't |
| 603 | carry their addresses with. */ |
| 604 | if (bfd_get_flavour (pbfd) == bfd_target_aout_flavour) |
| 605 | { |
| 606 | if (strcmp (section_name, ".text") == 0) |
| 607 | section_address = bfd_get_start_address (pbfd); |
| 608 | else if (strcmp (section_name, ".data") == 0) |
| 609 | { |
| 610 | /* Read the first 8 bytes of the data section. |
| 611 | There should be the string 'DaTa' followed by |
| 612 | a word containing the actual section address. */ |
| 613 | struct data_marker |
| 614 | { |
| 615 | char signature[4]; /* 'DaTa' */ |
| 616 | unsigned char sdata[4]; /* &sdata */ |
| 617 | } |
| 618 | marker; |
| 619 | bfd_get_section_contents (pbfd, section, &marker, 0, |
| 620 | sizeof (marker)); |
| 621 | if (strncmp (marker.signature, "DaTa", 4) == 0) |
| 622 | { |
| 623 | if (TARGET_BYTE_ORDER == BIG_ENDIAN) |
| 624 | section_address = bfd_getb32 (marker.sdata); |
| 625 | else |
| 626 | section_address = bfd_getl32 (marker.sdata); |
| 627 | } |
| 628 | } |
| 629 | } |
| 630 | |
| 631 | section_size = bfd_get_section_size_before_reloc (section); |
| 632 | |
| 633 | if (!quiet) |
| 634 | printf_filtered ("[Loading section %s at 0x%x (%d bytes)]\n", |
| 635 | bfd_get_section_name (pbfd, section), |
| 636 | section_address, |
| 637 | section_size); |
| 638 | |
| 639 | fptr = 0; |
| 640 | while (section_size > 0) |
| 641 | { |
| 642 | int count; |
| 643 | static char inds[] = "|/-\\"; |
| 644 | static int k = 0; |
| 645 | |
| 646 | QUIT; |
| 647 | |
| 648 | count = min (section_size, WRITESIZE); |
| 649 | |
| 650 | write_routine (pbfd, section, fptr, section_address, count); |
| 651 | |
| 652 | if (!quiet) |
| 653 | { |
| 654 | printf_unfiltered ("\r%c", inds[k++ % 4]); |
| 655 | gdb_flush (gdb_stdout); |
| 656 | } |
| 657 | |
| 658 | section_address += count; |
| 659 | fptr += count; |
| 660 | section_size -= count; |
| 661 | } |
| 662 | } |
| 663 | } |
| 664 | |
| 665 | if (!nostart) |
| 666 | { |
| 667 | entry = bfd_get_start_address (pbfd); |
| 668 | |
| 669 | if (!quiet) |
| 670 | printf_unfiltered ("[Starting %s at 0x%x]\n", filename, entry); |
| 671 | |
| 672 | start_routine (entry); |
| 673 | } |
| 674 | |
| 675 | do_cleanups (old_chain); |
| 676 | } |
| 677 | |
| 678 | static void |
| 679 | sparclite_serial_start (bfd_vma entry) |
| 680 | { |
| 681 | char buffer[5]; |
| 682 | int i; |
| 683 | |
| 684 | buffer[0] = 0x03; |
| 685 | store_unsigned_integer (buffer + 1, 4, entry); |
| 686 | |
| 687 | debug_serial_write (remote_desc, buffer, 1 + 4); |
| 688 | i = readchar (remote_desc, remote_timeout); |
| 689 | if (i != 0x55) |
| 690 | error ("Can't start SparcLite. Error code %d\n", i); |
| 691 | } |
| 692 | |
| 693 | static void |
| 694 | sparclite_serial_write (bfd *from_bfd, asection *from_sec, file_ptr from_addr, |
| 695 | bfd_vma to_addr, int len) |
| 696 | { |
| 697 | char buffer[4 + 4 + WRITESIZE]; /* addr + len + data */ |
| 698 | unsigned char checksum; |
| 699 | int i; |
| 700 | |
| 701 | store_unsigned_integer (buffer, 4, to_addr); /* Address */ |
| 702 | store_unsigned_integer (buffer + 4, 4, len); /* Length */ |
| 703 | |
| 704 | bfd_get_section_contents (from_bfd, from_sec, buffer + 8, from_addr, len); |
| 705 | |
| 706 | checksum = 0; |
| 707 | for (i = 0; i < len; i++) |
| 708 | checksum += buffer[8 + i]; |
| 709 | |
| 710 | i = send_resp (remote_desc, 0x01); |
| 711 | |
| 712 | if (i != 0x5a) |
| 713 | error ("Bad response from load command (0x%x)", i); |
| 714 | |
| 715 | debug_serial_write (remote_desc, buffer, 4 + 4 + len); |
| 716 | i = readchar (remote_desc, remote_timeout); |
| 717 | |
| 718 | if (i != checksum) |
| 719 | error ("Bad checksum from load command (0x%x)", i); |
| 720 | } |
| 721 | |
| 722 | #ifdef HAVE_SOCKETS |
| 723 | |
| 724 | static unsigned short |
| 725 | calc_checksum (unsigned char *buffer, int count) |
| 726 | { |
| 727 | unsigned short checksum; |
| 728 | |
| 729 | checksum = 0; |
| 730 | for (; count > 0; count -= 2, buffer += 2) |
| 731 | checksum += (*buffer << 8) | *(buffer + 1); |
| 732 | |
| 733 | if (count != 0) |
| 734 | checksum += *buffer << 8; |
| 735 | |
| 736 | return checksum; |
| 737 | } |
| 738 | |
| 739 | static void |
| 740 | sparclite_udp_start (bfd_vma entry) |
| 741 | { |
| 742 | unsigned char buffer[6]; |
| 743 | int i; |
| 744 | |
| 745 | buffer[0] = 0x3; |
| 746 | buffer[1] = 0; |
| 747 | buffer[2] = entry >> 24; |
| 748 | buffer[3] = entry >> 16; |
| 749 | buffer[4] = entry >> 8; |
| 750 | buffer[5] = entry; |
| 751 | |
| 752 | send_udp_buf (udp_fd, buffer, 6); /* Send start addr */ |
| 753 | i = recv_udp_buf (udp_fd, buffer, sizeof (buffer), -1); /* Get response */ |
| 754 | |
| 755 | if (i < 1 || buffer[0] != 0x55) |
| 756 | error ("Failed to take start address."); |
| 757 | } |
| 758 | |
| 759 | static void |
| 760 | sparclite_udp_write (bfd *from_bfd, asection *from_sec, file_ptr from_addr, |
| 761 | bfd_vma to_addr, int len) |
| 762 | { |
| 763 | unsigned char buffer[2000]; |
| 764 | unsigned short checksum; |
| 765 | static int pkt_num = 0; |
| 766 | static unsigned long old_addr = -1; |
| 767 | int i; |
| 768 | |
| 769 | while (1) |
| 770 | { |
| 771 | if (to_addr != old_addr) |
| 772 | { |
| 773 | buffer[0] = 0x1; /* Load command */ |
| 774 | buffer[1] = 0x1; /* Loading address */ |
| 775 | buffer[2] = to_addr >> 24; |
| 776 | buffer[3] = to_addr >> 16; |
| 777 | buffer[4] = to_addr >> 8; |
| 778 | buffer[5] = to_addr; |
| 779 | |
| 780 | checksum = 0; |
| 781 | for (i = 0; i < 6; i++) |
| 782 | checksum += buffer[i]; |
| 783 | checksum &= 0xff; |
| 784 | |
| 785 | send_udp_buf (udp_fd, buffer, 6); |
| 786 | i = recv_udp_buf (udp_fd, buffer, sizeof buffer, -1); |
| 787 | |
| 788 | if (i < 1) |
| 789 | error ("Got back short checksum for load addr."); |
| 790 | |
| 791 | if (checksum != buffer[0]) |
| 792 | error ("Got back bad checksum for load addr."); |
| 793 | |
| 794 | pkt_num = 0; /* Load addr resets packet seq # */ |
| 795 | old_addr = to_addr; |
| 796 | } |
| 797 | |
| 798 | bfd_get_section_contents (from_bfd, from_sec, buffer + 6, from_addr, |
| 799 | len); |
| 800 | |
| 801 | checksum = calc_checksum (buffer + 6, len); |
| 802 | |
| 803 | buffer[0] = 0x1; /* Load command */ |
| 804 | buffer[1] = 0x2; /* Loading data */ |
| 805 | buffer[2] = pkt_num >> 8; |
| 806 | buffer[3] = pkt_num; |
| 807 | buffer[4] = checksum >> 8; |
| 808 | buffer[5] = checksum; |
| 809 | |
| 810 | send_udp_buf (udp_fd, buffer, len + 6); |
| 811 | i = recv_udp_buf (udp_fd, buffer, sizeof buffer, 3); |
| 812 | |
| 813 | if (i == 0) |
| 814 | { |
| 815 | fprintf_unfiltered (gdb_stderr, "send_data: timeout sending %d bytes to address 0x%x retrying\n", len, to_addr); |
| 816 | continue; |
| 817 | } |
| 818 | |
| 819 | if (buffer[0] != 0xff) |
| 820 | error ("Got back bad response for load data."); |
| 821 | |
| 822 | old_addr += len; |
| 823 | pkt_num++; |
| 824 | |
| 825 | return; |
| 826 | } |
| 827 | } |
| 828 | |
| 829 | #endif /* HAVE_SOCKETS */ |
| 830 | |
| 831 | static void |
| 832 | sparclite_download (char *filename, int from_tty) |
| 833 | { |
| 834 | if (!serial_flag) |
| 835 | #ifdef HAVE_SOCKETS |
| 836 | download (remote_target_name, filename, from_tty, sparclite_udp_write, |
| 837 | sparclite_udp_start); |
| 838 | #else |
| 839 | abort (); /* sparclite_open should prevent this! */ |
| 840 | #endif |
| 841 | else |
| 842 | download (remote_target_name, filename, from_tty, sparclite_serial_write, |
| 843 | sparclite_serial_start); |
| 844 | } |
| 845 | \f |
| 846 | /* Set up the sparclite target vector. */ |
| 847 | |
| 848 | static void |
| 849 | init_sparclite_ops (void) |
| 850 | { |
| 851 | sparclite_ops.to_shortname = "sparclite"; |
| 852 | sparclite_ops.to_longname = "SPARClite download target"; |
| 853 | sparclite_ops.to_doc = "Download to a remote SPARClite target board via serial of UDP.\n\ |
| 854 | Specify the device it is connected to (e.g. /dev/ttya)."; |
| 855 | sparclite_ops.to_open = sparclite_open; |
| 856 | sparclite_ops.to_close = sparclite_close; |
| 857 | sparclite_ops.to_load = sparclite_download; |
| 858 | sparclite_ops.to_stratum = download_stratum; |
| 859 | sparclite_ops.to_magic = OPS_MAGIC; |
| 860 | } |
| 861 | |
| 862 | void |
| 863 | _initialize_sparcl_tdep (void) |
| 864 | { |
| 865 | init_sparclite_ops (); |
| 866 | add_target (&sparclite_ops); |
| 867 | } |