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   1 /***************************************************************************
   2  *   Copyright (C) 2005 by Dominic Rath                                    *
   3  *   Dominic.Rath@gmx.de                                                   *
   4  *                                                                         *
   5  *   This program is free software; you can redistribute it and/or modify  *
   6  *   it under the terms of the GNU General Public License as published by  *
   7  *   the Free Software Foundation; either version 2 of the License, or     *
   8  *   (at your option) any later version.                                   *
   9  *                                                                         *
  10  *   This program is distributed in the hope that it will be useful,       *
  11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  13  *   GNU General Public License for more details.                          *
  14  *                                                                         *
  15  *   You should have received a copy of the GNU General Public License     *
  16  *   along with this program; if not, write to the                         *
  17  *   Free Software Foundation, Inc.,                                       *
  18  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  19  ***************************************************************************/
  20 #ifdef HAVE_CONFIG_H
  21 #include "config.h"
  22 #endif
  23
  24 #include "replacements.h"
  25
  26 #include "gdb_server.h"
  27
  28 #include "server.h"
  29 #include "log.h"
  30 #include "binarybuffer.h"
  31 #include "jtag.h"
  32 #include "breakpoints.h"
  33 #include "flash.h"
  34 #include "target_request.h"
  35 #include "configuration.h"
  36
  37 #include <string.h>
  38 #include <errno.h>
  39 #include <unistd.h>
  40 #include <stdlib.h>
  41
  42 #if 0
  43 #define _DEBUG_GDB_IO_
  44 #endif
  45
  46 extern int gdb_error(connection_t *connection, int retval);
  47 static unsigned short gdb_port;
  48 static const char *DIGITS = "0123456789abcdef";
  49
  50 static void gdb_log_callback(void *priv, const char *file, int line,
  51                 const char *function, const char *string);
  52
  53 enum gdb_detach_mode
  54 {
  55         GDB_DETACH_RESUME,
  56         GDB_DETACH_RESET,
  57         GDB_DETACH_HALT,
  58         GDB_DETACH_NOTHING
  59 };
  60
  61 /* target behaviour on gdb detach */
  62 enum gdb_detach_mode detach_mode = GDB_DETACH_RESUME;
  63
  64 /* set if we are sending a memory map to gdb
  65  * via qXfer:memory-map:read packet */
  66 /* enabled by default*/
  67 int gdb_use_memory_map = 1;
  68 /* enabled by default*/
  69 int gdb_flash_program = 1;
  70
  71 /* if set, data aborts cause an error to be reported in memory read packets
  72  * see the code in gdb_read_memory_packet() for further explanations */
  73 int gdb_report_data_abort = 0;
  74
  75 int gdb_last_signal(target_t *target)
  76 {
  77         switch (target->debug_reason)
  78         {
  79                 case DBG_REASON_DBGRQ:
  80                         return 0x2; /* SIGINT */
  81                 case DBG_REASON_BREAKPOINT:
  82                 case DBG_REASON_WATCHPOINT:
  83                 case DBG_REASON_WPTANDBKPT:
  84                         return 0x05; /* SIGTRAP */
  85                 case DBG_REASON_SINGLESTEP:
  86                         return 0x05; /* SIGTRAP */
  87                 case DBG_REASON_NOTHALTED:
  88                         return 0x0; /* no signal... shouldn't happen */
  89                 default:
  90                         LOG_USER("undefined debug reason %d - target needs reset", target->debug_reason);
  91                         return 0x0;
  92         }
  93 }
  94
  95 int check_pending(connection_t *connection, int timeout_s, int *got_data)
  96 {
  97         /* a non-blocking socket will block if there is 0 bytes available on the socket,
  98          * but return with as many bytes as are available immediately
  99          */
 100         struct timeval tv;
 101         fd_set read_fds;
 102         gdb_connection_t *gdb_con = connection->priv;
 103         int t;
 104         if (got_data==NULL)
 105                 got_data=&t;
 106         *got_data=0;
 107
 108         if (gdb_con->buf_cnt>0)
 109         {
 110                 *got_data = 1;
 111                 return ERROR_OK;
 112         }
 113
 114         FD_ZERO(&read_fds);
 115         FD_SET(connection->fd, &read_fds);
 116
 117         tv.tv_sec = timeout_s;
 118         tv.tv_usec = 0;
 119         if (select(connection->fd + 1, &read_fds, NULL, NULL, &tv) == 0)
 120         {
 121                 /* This can typically be because a "monitor" command took too long
 122                  * before printing any progress messages
 123                  */
 124                 if (timeout_s>0)
 125                 {
 126                         return ERROR_GDB_TIMEOUT;
 127                 } else
 128                 {
 129                         return ERROR_OK;
 130                 }
 131         }
 132         *got_data=FD_ISSET(connection->fd, &read_fds)!=0;
 133         return ERROR_OK;
 134 }
 135
 136 int gdb_get_char(connection_t *connection, int* next_char)
 137 {
 138         gdb_connection_t *gdb_con = connection->priv;
 139         int retval=ERROR_OK;
 140
 141 #ifdef _DEBUG_GDB_IO_
 142         char *debug_buffer;
 143 #endif
 144
 145         if (gdb_con->buf_cnt-- > 0)
 146         {
 147                 *next_char = *(gdb_con->buf_p++);
 148                 if (gdb_con->buf_cnt > 0)
 149                         connection->input_pending = 1;
 150                 else
 151                         connection->input_pending = 0;
 152
 153 #ifdef _DEBUG_GDB_IO_
 154                 LOG_DEBUG("returned char '%c' (0x%2.2x)", *next_char, *next_char);
 155 #endif
 156
 157                 return ERROR_OK;
 158         }
 159
 160         for (;;)
 161         {
 162                 retval=check_pending(connection, 1, NULL);
 163                 if (retval!=ERROR_OK)
 164                         return retval;
 165                 gdb_con->buf_cnt = read_socket(connection->fd, gdb_con->buffer, GDB_BUFFER_SIZE);
 166                 if (gdb_con->buf_cnt > 0)
 167                 {
 168                         break;
 169                 }
 170                 if (gdb_con->buf_cnt == 0)
 171                 {
 172                         gdb_con->closed = 1;
 173                         return ERROR_SERVER_REMOTE_CLOSED;
 174                 }
 175
 176 #ifdef _WIN32
 177                 errno = WSAGetLastError();
 178
 179                 switch(errno)
 180                 {
 181                         case WSAEWOULDBLOCK:
 182                                 usleep(1000);
 183                                 break;
 184                         case WSAECONNABORTED:
 185                                 gdb_con->closed = 1;
 186                                 return ERROR_SERVER_REMOTE_CLOSED;
 187                         case WSAECONNRESET:
 188                                 gdb_con->closed = 1;
 189                                 return ERROR_SERVER_REMOTE_CLOSED;
 190                         default:
 191                                 LOG_ERROR("read: %d", errno);
 192                                 exit(-1);
 193                 }
 194 #else
 195                 switch(errno)
 196                 {
 197                         case EAGAIN:
 198                                 usleep(1000);
 199                                 break;
 200                         case ECONNABORTED:
 201                                 gdb_con->closed = 1;
 202                                 return ERROR_SERVER_REMOTE_CLOSED;
 203                         case ECONNRESET:
 204                                 gdb_con->closed = 1;
 205                                 return ERROR_SERVER_REMOTE_CLOSED;
 206                         default:
 207                                 LOG_ERROR("read: %s", strerror(errno));
 208                                 gdb_con->closed = 1;
 209                                 return ERROR_SERVER_REMOTE_CLOSED;
 210                 }
 211 #endif
 212         }
 213
 214 #ifdef _DEBUG_GDB_IO_
 215         debug_buffer = malloc(gdb_con->buf_cnt + 1);
 216         memcpy(debug_buffer, gdb_con->buffer, gdb_con->buf_cnt);
 217         debug_buffer[gdb_con->buf_cnt] = 0;
 218         LOG_DEBUG("received '%s'", debug_buffer);
 219         free(debug_buffer);
 220 #endif
 221
 222         gdb_con->buf_p = gdb_con->buffer;
 223         gdb_con->buf_cnt--;
 224         *next_char = *(gdb_con->buf_p++);
 225         if (gdb_con->buf_cnt > 0)
 226                 connection->input_pending = 1;
 227         else
 228                 connection->input_pending = 0;
 229 #ifdef _DEBUG_GDB_IO_
 230         LOG_DEBUG("returned char '%c' (0x%2.2x)", *next_char, *next_char);
 231 #endif
 232
 233         return retval;
 234 }
 235
 236 int gdb_putback_char(connection_t *connection, int last_char)
 237 {
 238         gdb_connection_t *gdb_con = connection->priv;
 239
 240         if (gdb_con->buf_p > gdb_con->buffer)
 241         {
 242                 *(--gdb_con->buf_p) = last_char;
 243                 gdb_con->buf_cnt++;
 244         }
 245         else
 246         {
 247                 LOG_ERROR("BUG: couldn't put character back");
 248         }
 249
 250         return ERROR_OK;
 251 }
 252
 253 /* The only way we can detect that the socket is closed is the first time
 254  * we write to it, we will fail. Subsequent write operations will
 255  * succeed. Shudder! */
 256 int gdb_write(connection_t *connection, void *data, int len)
 257 {
 258         gdb_connection_t *gdb_con = connection->priv;
 259         if (gdb_con->closed)
 260                 return ERROR_SERVER_REMOTE_CLOSED;
 261
 262         if (write_socket(connection->fd, data, len) == len)
 263         {
 264                 return ERROR_OK;
 265         }
 266         gdb_con->closed = 1;
 267         return ERROR_SERVER_REMOTE_CLOSED;
 268 }
 269
 270 int gdb_put_packet_inner(connection_t *connection, char *buffer, int len)
 271 {
 272         int i;
 273         unsigned char my_checksum = 0;
 274 #ifdef _DEBUG_GDB_IO_
 275         char *debug_buffer;
 276 #endif
 277         int reply;
 278         int retval;
 279         gdb_connection_t *gdb_con = connection->priv;
 280
 281         for (i = 0; i < len; i++)
 282                 my_checksum += buffer[i];
 283
 284 #ifdef _DEBUG_GDB_IO_
 285         /*
 286          * At this point we should have nothing in the input queue from GDB,
 287          * however sometimes '-' is sent even though we've already received
 288          * an ACK (+) for everything we've sent off.
 289          */
 290         int gotdata;
 291         for (;;)
 292         {
 293                 if ((retval=check_pending(connection, 0, &gotdata))!=ERROR_OK)
 294                         return retval;
 295                 if (!gotdata)
 296                         break;
 297                 if ((retval = gdb_get_char(connection, &reply)) != ERROR_OK)
 298                         return retval;
 299                 LOG_WARNING("Discard unexpected char %c", reply);
 300         }
 301 #endif
 302
 303         while (1)
 304         {
 305 #ifdef _DEBUG_GDB_IO_
 306                 debug_buffer = malloc(len + 1);
 307                 memcpy(debug_buffer, buffer, len);
 308                 debug_buffer[len] = 0;
 309                 LOG_DEBUG("sending packet '$%s#%2.2x'", debug_buffer, my_checksum);
 310                 free(debug_buffer);
 311 #endif
 312
 313                 char local_buffer[1024];
 314                 local_buffer[0] = '$';
 315                 if (len+4 <= sizeof(local_buffer))
 316                 {
 317                         /* performance gain on smaller packets by only a single call to gdb_write() */
 318                         memcpy(local_buffer+1, buffer, len++);
 319                         local_buffer[len++] = '#';
 320                         local_buffer[len++] = DIGITS[(my_checksum >> 4) & 0xf];
 321                         local_buffer[len++] = DIGITS[my_checksum & 0xf];
 322                         gdb_write(connection, local_buffer, len);
 323                 }
 324                 else
 325                 {
 326                         /* larger packets are transmitted directly from caller supplied buffer
 327                            by several calls to gdb_write() to avoid dynamic allocation */
 328                         local_buffer[1] = '#';
 329                         local_buffer[2] = DIGITS[(my_checksum >> 4) & 0xf];
 330                         local_buffer[3] = DIGITS[my_checksum & 0xf];
 331                         gdb_write(connection, local_buffer, 1);
 332                         gdb_write(connection, buffer, len);
 333                         gdb_write(connection, local_buffer+1, 3);
 334                 }
 335
 336                 if ((retval = gdb_get_char(connection, &reply)) != ERROR_OK)
 337                         return retval;
 338
 339                 if (reply == '+')
 340                         break;
 341                 else if (reply == '-')
 342                 {
 343                         /* Stop sending output packets for now */
 344                         log_remove_callback(gdb_log_callback, connection);
 345                         LOG_WARNING("negative reply, retrying");
 346                 }
 347                 else if (reply == 0x3)
 348                 {
 349                         gdb_con->ctrl_c = 1;
 350                         if ((retval = gdb_get_char(connection, &reply)) != ERROR_OK)
 351                                 return retval;
 352                         if (reply == '+')
 353                                 break;
 354                         else if (reply == '-')
 355                         {
 356                                 /* Stop sending output packets for now */
 357                                 log_remove_callback(gdb_log_callback, connection);
 358                                 LOG_WARNING("negative reply, retrying");
 359                         }
 360                         else
 361                         {
 362                                 LOG_ERROR("unknown character 0x%2.2x in reply, dropping connection", reply);
 363                                 gdb_con->closed=1;
 364                                 return ERROR_SERVER_REMOTE_CLOSED;
 365                         }
 366                 }
 367                 else
 368                 {
 369                         LOG_ERROR("unknown character 0x%2.2x in reply, dropping connection", reply);
 370                         gdb_con->closed=1;
 371                         return ERROR_SERVER_REMOTE_CLOSED;
 372                 }
 373         }
 374         if (gdb_con->closed)
 375                 return ERROR_SERVER_REMOTE_CLOSED;
 376
 377         return ERROR_OK;
 378 }
 379
 380 int gdb_put_packet(connection_t *connection, char *buffer, int len)
 381 {
 382         gdb_connection_t *gdb_con = connection->priv;
 383         gdb_con->busy = 1;
 384         int retval = gdb_put_packet_inner(connection, buffer, len);
 385         gdb_con->busy = 0;
 386         return retval;
 387 }
 388
 389 int gdb_get_packet_inner(connection_t *connection, char *buffer, int *len)
 390 {
 391         int character;
 392         int count = 0;
 393         int retval;
 394         char checksum[3];
 395         unsigned char my_checksum = 0;
 396         gdb_connection_t *gdb_con = connection->priv;
 397
 398         while (1)
 399         {
 400                 do
 401                 {
 402                         if ((retval = gdb_get_char(connection, &character)) != ERROR_OK)
 403                                 return retval;
 404
 405 #ifdef _DEBUG_GDB_IO_
 406                         LOG_DEBUG("character: '%c'", character);
 407 #endif
 408
 409                         switch (character)
 410                         {
 411                                 case '$':
 412                                         break;
 413                                 case '+':
 414                                         /* gdb sends a dummy ack '+' at every remote connect - see remote_start_remote (remote.c)
 415                                          * incase anyone tries to debug why they receive this warning every time */
 416                                         LOG_WARNING("acknowledgment received, but no packet pending");
 417                                         break;
 418                                 case '-':
 419                                         LOG_WARNING("negative acknowledgment, but no packet pending");
 420                                         break;
 421                                 case 0x3:
 422                                         gdb_con->ctrl_c = 1;
 423                                         *len = 0;
 424                                         return ERROR_OK;
 425                                 default:
 426                                         LOG_WARNING("ignoring character 0x%x", character);
 427                                         break;
 428                         }
 429                 } while (character != '$');
 430
 431                 my_checksum = 0;
 432
 433                 count = 0;
 434                 gdb_connection_t *gdb_con = connection->priv;
 435                 for (;;)
 436                 {
 437                         /* The common case is that we have an entire packet with no escape chars.
 438                          * We need to leave at least 2 bytes in the buffer to have
 439                          * gdb_get_char() update various bits and bobs correctly.
 440                          */
 441                         if ((gdb_con->buf_cnt > 2) && ((gdb_con->buf_cnt+count) < *len))
 442                         {
 443                                 /* The compiler will struggle a bit with constant propagation and
 444                                  * aliasing, so we help it by showing that these values do not
 445                                  * change inside the loop
 446                                  */
 447                                 int i;
 448                                 char *buf = gdb_con->buf_p;
 449                                 int run = gdb_con->buf_cnt - 2;
 450                                 i = 0;
 451                                 int done = 0;
 452                                 while (i < run)
 453                                 {
 454                                         character = *buf++;
 455                                         i++;
 456                                         if (character == '#')
 457                                         {
 458                                                 /* Danger! character can be '#' when esc is
 459                                                  * used so we need an explicit boolean for done here.
 460                                                  */
 461                                                 done = 1;
 462                                                 break;
 463                                         }
 464
 465                                         if (character == '}')
 466                                         {
 467                                                 /* data transmitted in binary mode (X packet)
 468                                                  * uses 0x7d as escape character */
 469                                                 my_checksum += character & 0xff;
 470                                                 character = *buf++;
 471                                                 i++;
 472                                                 my_checksum += character & 0xff;
 473                                                 buffer[count++] = (character ^ 0x20) & 0xff;
 474                                         } else
 475                                         {
 476                                                 my_checksum += character & 0xff;
 477                                                 buffer[count++] = character & 0xff;
 478                                         }
 479                                 }
 480                                 gdb_con->buf_p += i;
 481                                 gdb_con->buf_cnt -= i;
 482                                 if (done)
 483                                         break;
 484                         }
 485                         if (count > *len)
 486                         {
 487                                 LOG_ERROR("packet buffer too small");
 488                                 return ERROR_GDB_BUFFER_TOO_SMALL;
 489                         }
 490
 491                         if ((retval = gdb_get_char(connection, &character)) != ERROR_OK)
 492                                 return retval;
 493
 494                         if (character == '#')
 495                                 break;
 496
 497                         if (character == '}')
 498                         {
 499                                 /* data transmitted in binary mode (X packet)
 500                                  * uses 0x7d as escape character */
 501                                 my_checksum += character & 0xff;
 502                                 if ((retval = gdb_get_char(connection, &character)) != ERROR_OK)
 503                                         return retval;
 504                                 my_checksum += character & 0xff;
 505                                 buffer[count++] = (character ^ 0x20) & 0xff;
 506                         }
 507                         else
 508                         {
 509                                 my_checksum += character & 0xff;
 510                                 buffer[count++] = character & 0xff;
 511                         }
 512
 513                 }
 514
 515                 *len = count;
 516
 517                 if ((retval = gdb_get_char(connection, &character)) != ERROR_OK)
 518                         return retval;
 519                 checksum[0] = character;
 520                 if ((retval = gdb_get_char(connection, &character)) != ERROR_OK)
 521                         return retval;
 522                 checksum[1] = character;
 523                 checksum[2] = 0;
 524
 525                 if (my_checksum == strtoul(checksum, NULL, 16))
 526                 {
 527                         gdb_write(connection, "+", 1);
 528                         break;
 529                 }
 530
 531                 LOG_WARNING("checksum error, requesting retransmission");
 532                 gdb_write(connection, "-", 1);
 533         }
 534         if (gdb_con->closed)
 535                 return ERROR_SERVER_REMOTE_CLOSED;
 536
 537         return ERROR_OK;
 538 }
 539
 540 int gdb_get_packet(connection_t *connection, char *buffer, int *len)
 541 {
 542         gdb_connection_t *gdb_con = connection->priv;
 543         gdb_con->busy = 1;
 544         int retval = gdb_get_packet_inner(connection, buffer, len);
 545         gdb_con->busy = 0;
 546         return retval;
 547 }
 548
 549 int gdb_output_con(connection_t *connection, const char* line)
 550 {
 551         char *hex_buffer;
 552         int i, bin_size;
 553
 554         bin_size = strlen(line);
 555
 556         hex_buffer = malloc(bin_size*2 + 2);
 557         if (hex_buffer == NULL)
 558                 return ERROR_GDB_BUFFER_TOO_SMALL;
 559
 560         hex_buffer[0] = 'O';
 561         for (i=0; i<bin_size; i++)
 562                 snprintf(hex_buffer + 1 + i*2, 3, "%2.2x", line[i]);
 563         hex_buffer[bin_size*2+1] = 0;
 564
 565         gdb_put_packet(connection, hex_buffer, bin_size*2 + 1);
 566
 567         free(hex_buffer);
 568         return ERROR_OK;
 569 }
 570
 571 int gdb_output(struct command_context_s *context, const char* line)
 572 {
 573         /* this will be dumped to the log and also sent as an O packet if possible */
 574         LOG_USER_N("%s", line);
 575         return ERROR_OK;
 576 }
 577
 578 int gdb_program_handler(struct target_s *target, enum target_event event, void *priv)
 579 {
 580         struct command_context_s *cmd_ctx = priv;
 581
 582         target_invoke_script(cmd_ctx, target, "gdb_program");
 583         jtag_execute_queue();
 584
 585         return ERROR_OK;
 586 }
 587
 588 int gdb_target_callback_event_handler(struct target_s *target, enum target_event event, void *priv)
 589 {
 590         connection_t *connection = priv;
 591         gdb_connection_t *gdb_connection = connection->priv;
 592         char sig_reply[4];
 593         int signal;
 594
 595         switch (event)
 596         {
 597                 case TARGET_EVENT_HALTED:
 598                         /* In the GDB protocol when we are stepping or coninuing execution,
 599                          * we have a lingering reply. Upon receiving a halted event
 600                          * when we have that lingering packet, we reply to the original
 601                          * step or continue packet.
 602                          *
 603                          * Executing monitor commands can bring the target in and
 604                          * out of the running state so we'll see lots of TARGET_EVENT_XXX
 605                          * that are to be ignored.
 606                          */
 607                         if (gdb_connection->frontend_state == TARGET_RUNNING)
 608                         {
 609                                 /* stop forwarding log packets! */
 610                                 log_remove_callback(gdb_log_callback, connection);
 611
 612                                 if (gdb_connection->ctrl_c)
 613                                 {
 614                                         signal = 0x2;
 615                                         gdb_connection->ctrl_c = 0;
 616                                 }
 617                                 else
 618                                 {
 619                                         signal = gdb_last_signal(target);
 620                                 }
 621
 622                                 snprintf(sig_reply, 4, "T%2.2x", signal);
 623                                 gdb_put_packet(connection, sig_reply, 3);
 624                                 gdb_connection->frontend_state = TARGET_HALTED;
 625                         }
 626                         break;
 627                 case TARGET_EVENT_GDB_PROGRAM:
 628                         gdb_program_handler(target, event, connection->cmd_ctx);
 629                         break;
 630                 default:
 631                         break;
 632         }
 633
 634         return ERROR_OK;
 635 }
 636
 637
 638 int gdb_new_connection(connection_t *connection)
 639 {
 640         gdb_connection_t *gdb_connection = malloc(sizeof(gdb_connection_t));
 641         gdb_service_t *gdb_service = connection->service->priv;
 642         int retval;
 643         int initial_ack;
 644
 645         connection->priv = gdb_connection;
 646
 647         /* initialize gdb connection information */
 648         gdb_connection->buf_p = gdb_connection->buffer;
 649         gdb_connection->buf_cnt = 0;
 650         gdb_connection->ctrl_c = 0;
 651         gdb_connection->frontend_state = TARGET_HALTED;
 652         gdb_connection->vflash_image = NULL;
 653         gdb_connection->closed = 0;
 654         gdb_connection->busy = 0;
 655
 656         /* send ACK to GDB for debug request */
 657         gdb_write(connection, "+", 1);
 658
 659         /* output goes through gdb connection */
 660         command_set_output_handler(connection->cmd_ctx, gdb_output, connection);
 661
 662         /* register callback to be informed about target events */
 663         target_register_event_callback(gdb_target_callback_event_handler, connection);
 664
 665         /* a gdb session just attached, try to put the target in halt mode.
 666          *
 667          * DANGER!!!!
 668          *
 669          * If the halt fails(e.g. target needs a reset, JTAG communication not
 670          * working, etc.), then the GDB connect will succeed as
 671          * the get_gdb_reg_list() will lie and return a register list with
 672          * dummy values.
 673          *
 674          * This allows GDB monitor commands to be run from a GDB init script to
 675          * initialize the target
 676          *
 677          * Also, since the halt() is asynchronous target connect will be
 678          * instantaneous and thus avoiding annoying timeout problems during
 679          * connect.
 680          */
 681         target_halt(gdb_service->target);
 682         /* FIX!!!! could extended-remote work better here?
 683          *
 684          *  wait a tiny bit for halted state or we just continue. The
 685          * GDB register packet will then contain garbage
 686          */
 687         target_wait_state(gdb_service->target, TARGET_HALTED, 500);
 688
 689         /* remove the initial ACK from the incoming buffer */
 690         if ((retval = gdb_get_char(connection, &initial_ack)) != ERROR_OK)
 691                 return retval;
 692
 693         /* FIX!!!??? would we actually ever receive a + here???
 694          * Not observed.
 695          */
 696         if (initial_ack != '+')
 697                 gdb_putback_char(connection, initial_ack);
 698
 699         return ERROR_OK;
 700 }
 701
 702 int gdb_connection_closed(connection_t *connection)
 703 {
 704         gdb_service_t *gdb_service = connection->service->priv;
 705         gdb_connection_t *gdb_connection = connection->priv;
 706
 707         /* see if an image built with vFlash commands is left */
 708         if (gdb_connection->vflash_image)
 709         {
 710                 image_close(gdb_connection->vflash_image);
 711                 free(gdb_connection->vflash_image);
 712                 gdb_connection->vflash_image = NULL;
 713         }
 714
 715         /* if this connection registered a debug-message receiver delete it */
 716         delete_debug_msg_receiver(connection->cmd_ctx, gdb_service->target);
 717
 718         if (connection->priv)
 719         {
 720                 free(connection->priv);
 721                 connection->priv = NULL;
 722         }
 723         else
 724         {
 725                 LOG_ERROR("BUG: connection->priv == NULL");
 726         }
 727
 728         target_unregister_event_callback(gdb_target_callback_event_handler, connection);
 729         log_remove_callback(gdb_log_callback, connection);
 730
 731         return ERROR_OK;
 732 }
 733
 734 void gdb_send_error(connection_t *connection, u8 the_error)
 735 {
 736         char err[4];
 737         snprintf(err, 4, "E%2.2X", the_error );
 738         gdb_put_packet(connection, err, 3);
 739 }
 740
 741 int gdb_last_signal_packet(connection_t *connection, target_t *target, char* packet, int packet_size)
 742 {
 743         char sig_reply[4];
 744         int signal;
 745
 746         signal = gdb_last_signal(target);
 747
 748         snprintf(sig_reply, 4, "S%2.2x", signal);
 749         gdb_put_packet(connection, sig_reply, 3);
 750
 751         return ERROR_OK;
 752 }
 753
 754 /* Convert register to string of bits. NB! The # of bits in the
 755  * register might be non-divisible by 8(a byte), in which
 756  * case an entire byte is shown. */
 757 void gdb_str_to_target(target_t *target, char *tstr, reg_t *reg)
 758 {
 759         int i;
 760
 761         u8 *buf;
 762         int buf_len;
 763         buf = reg->value;
 764         buf_len = CEIL(reg->size, 8);
 765
 766         for (i = 0; i < buf_len; i++)
 767         {
 768                 tstr[i*2]   = DIGITS[(buf[i]>>4) & 0xf];
 769                 tstr[i*2+1] = DIGITS[buf[i]&0xf];
 770         }
 771 }
 772
 773 void gdb_target_to_str(target_t *target, char *tstr, char *str)
 774 {
 775         int str_len = strlen(tstr);
 776         int i;
 777
 778         if (str_len % 2)
 779         {
 780                 LOG_ERROR("BUG: gdb value with uneven number of characters encountered");
 781                 exit(-1);
 782         }
 783
 784         for (i = 0; i < str_len; i+=2)
 785         {
 786                 str[str_len - i - 1] = tstr[i + 1];
 787                 str[str_len - i - 2] = tstr[i];
 788         }
 789 }
 790
 791 int gdb_get_registers_packet(connection_t *connection, target_t *target, char* packet, int packet_size)
 792 {
 793         reg_t **reg_list;
 794         int reg_list_size;
 795         int retval;
 796         int reg_packet_size = 0;
 797         char *reg_packet;
 798         char *reg_packet_p;
 799         int i;
 800
 801 #ifdef _DEBUG_GDB_IO_
 802         LOG_DEBUG("-");
 803 #endif
 804
 805         if ((retval = target->type->get_gdb_reg_list(target, &reg_list, &reg_list_size)) != ERROR_OK)
 806         {
 807                 return gdb_error(connection, retval);
 808         }
 809
 810         for (i = 0; i < reg_list_size; i++)
 811         {
 812                 reg_packet_size += reg_list[i]->size;
 813         }
 814
 815         reg_packet = malloc(CEIL(reg_packet_size, 8) * 2);
 816         reg_packet_p = reg_packet;
 817
 818         for (i = 0; i < reg_list_size; i++)
 819         {
 820                 gdb_str_to_target(target, reg_packet_p, reg_list[i]);
 821                 reg_packet_p += CEIL(reg_list[i]->size, 8) * 2;
 822         }
 823
 824 #ifdef _DEBUG_GDB_IO_
 825         {
 826                 char *reg_packet_p;
 827                 reg_packet_p = strndup(reg_packet, CEIL(reg_packet_size, 8) * 2);
 828                 LOG_DEBUG("reg_packet: %s", reg_packet_p);
 829                 free(reg_packet_p);
 830         }
 831 #endif
 832
 833         gdb_put_packet(connection, reg_packet, CEIL(reg_packet_size, 8) * 2);
 834         free(reg_packet);
 835
 836         free(reg_list);
 837
 838         return ERROR_OK;
 839 }
 840
 841 int gdb_set_registers_packet(connection_t *connection, target_t *target, char *packet, int packet_size)
 842 {
 843         int i;
 844         reg_t **reg_list;
 845         int reg_list_size;
 846         int retval;
 847         char *packet_p;
 848
 849 #ifdef _DEBUG_GDB_IO_
 850         LOG_DEBUG("-");
 851 #endif
 852
 853         /* skip command character */
 854         packet++;
 855         packet_size--;
 856
 857         if (packet_size % 2)
 858         {
 859                 LOG_WARNING("GDB set_registers packet with uneven characters received, dropping connection");
 860                 return ERROR_SERVER_REMOTE_CLOSED;
 861         }
 862
 863         if ((retval = target->type->get_gdb_reg_list(target, &reg_list, &reg_list_size)) != ERROR_OK)
 864         {
 865                 return gdb_error(connection, retval);
 866         }
 867
 868         packet_p = packet;
 869         for (i = 0; i < reg_list_size; i++)
 870         {
 871                 u8 *bin_buf;
 872                 char *hex_buf;
 873                 reg_arch_type_t *arch_type;
 874
 875                 /* convert from GDB-string (target-endian) to hex-string (big-endian) */
 876                 hex_buf = malloc(CEIL(reg_list[i]->size, 8) * 2);
 877                 gdb_target_to_str(target, packet_p, hex_buf);
 878
 879                 /* convert hex-string to binary buffer */
 880                 bin_buf = malloc(CEIL(reg_list[i]->size, 8));
 881                 str_to_buf(hex_buf, CEIL(reg_list[i]->size, 8) * 2, bin_buf, reg_list[i]->size, 16);
 882
 883                 /* get register arch_type, and call set method */
 884                 arch_type = register_get_arch_type(reg_list[i]->arch_type);
 885                 if (arch_type == NULL)
 886                 {
 887                         LOG_ERROR("BUG: encountered unregistered arch type");
 888                         exit(-1);
 889                 }
 890                 arch_type->set(reg_list[i], bin_buf);
 891
 892                 /* advance packet pointer */
 893                 packet_p += (CEIL(reg_list[i]->size, 8) * 2);
 894
 895                 free(bin_buf);
 896                 free(hex_buf);
 897         }
 898
 899         /* free reg_t *reg_list[] array allocated by get_gdb_reg_list */
 900         free(reg_list);
 901
 902         gdb_put_packet(connection, "OK", 2);
 903
 904         return ERROR_OK;
 905 }
 906
 907 int gdb_get_register_packet(connection_t *connection, target_t *target, char *packet, int packet_size)
 908 {
 909         char *reg_packet;
 910         int reg_num = strtoul(packet + 1, NULL, 16);
 911         reg_t **reg_list;
 912         int reg_list_size;
 913         int retval;
 914
 915 #ifdef _DEBUG_GDB_IO_
 916         LOG_DEBUG("-");
 917 #endif
 918
 919         if ((retval = target->type->get_gdb_reg_list(target, &reg_list, &reg_list_size)) != ERROR_OK)
 920         {
 921                 return gdb_error(connection, retval);
 922         }
 923
 924         if (reg_list_size <= reg_num)
 925         {
 926                 LOG_ERROR("gdb requested a non-existing register");
 927                 exit(-1);
 928         }
 929
 930         reg_packet = malloc(CEIL(reg_list[reg_num]->size, 8) * 2);
 931
 932         gdb_str_to_target(target, reg_packet, reg_list[reg_num]);
 933
 934         gdb_put_packet(connection, reg_packet, CEIL(reg_list[reg_num]->size, 8) * 2);
 935
 936         free(reg_list);
 937         free(reg_packet);
 938
 939         return ERROR_OK;
 940 }
 941
 942 int gdb_set_register_packet(connection_t *connection, target_t *target, char *packet, int packet_size)
 943 {
 944         char *separator;
 945         char *hex_buf;
 946         u8 *bin_buf;
 947         int reg_num = strtoul(packet + 1, &separator, 16);
 948         reg_t **reg_list;
 949         int reg_list_size;
 950         int retval;
 951         reg_arch_type_t *arch_type;
 952
 953         LOG_DEBUG("-");
 954
 955         if ((retval = target->type->get_gdb_reg_list(target, &reg_list, &reg_list_size)) != ERROR_OK)
 956         {
 957                 return gdb_error(connection, retval);
 958         }
 959
 960         if (reg_list_size < reg_num)
 961         {
 962                 LOG_ERROR("gdb requested a non-existing register");
 963                 return ERROR_SERVER_REMOTE_CLOSED;
 964         }
 965
 966         if (*separator != '=')
 967         {
 968                 LOG_ERROR("GDB 'set register packet', but no '=' following the register number");
 969                 return ERROR_SERVER_REMOTE_CLOSED;
 970         }
 971
 972         /* convert from GDB-string (target-endian) to hex-string (big-endian) */
 973         hex_buf = malloc(CEIL(reg_list[reg_num]->size, 8) * 2);
 974         gdb_target_to_str(target, separator + 1, hex_buf);
 975
 976         /* convert hex-string to binary buffer */
 977         bin_buf = malloc(CEIL(reg_list[reg_num]->size, 8));
 978         str_to_buf(hex_buf, CEIL(reg_list[reg_num]->size, 8) * 2, bin_buf, reg_list[reg_num]->size, 16);
 979
 980         /* get register arch_type, and call set method */
 981         arch_type = register_get_arch_type(reg_list[reg_num]->arch_type);
 982         if (arch_type == NULL)
 983         {
 984                 LOG_ERROR("BUG: encountered unregistered arch type");
 985                 exit(-1);
 986         }
 987         arch_type->set(reg_list[reg_num], bin_buf);
 988
 989         gdb_put_packet(connection, "OK", 2);
 990
 991         free(bin_buf);
 992         free(hex_buf);
 993         free(reg_list);
 994
 995         return ERROR_OK;
 996 }
 997
 998 int gdb_error(connection_t *connection, int retval)
 999 {
1000         switch (retval)
1001         {
1002                 case ERROR_TARGET_DATA_ABORT:
1003                         gdb_send_error(connection, EIO);
1004                         break;
1005                 case ERROR_TARGET_TRANSLATION_FAULT:
1006                         gdb_send_error(connection, EFAULT);
1007                         break;
1008                 case ERROR_TARGET_UNALIGNED_ACCESS:
1009                         gdb_send_error(connection, EFAULT);
1010                         break;
1011                 case ERROR_TARGET_NOT_HALTED:
1012                         gdb_send_error(connection, EFAULT);
1013                         break;
1014                 default:
1015                         /* This could be that the target reset itself. */
1016                         LOG_ERROR("unexpected error %i", retval);
1017                         gdb_send_error(connection, EFAULT);
1018                         break;
1019         }
1020
1021         return ERROR_OK;
1022 }
1023
1024 /* We don't have to worry about the default 2 second timeout for GDB packets,
1025  * because GDB breaks up large memory reads into smaller reads.
1026  *
1027  * 8191 bytes by the looks of it. Why 8191 bytes instead of 8192?????
1028  */
1029 int gdb_read_memory_packet(connection_t *connection, target_t *target, char *packet, int packet_size)
1030 {
1031         char *separator;
1032         u32 addr = 0;
1033         u32 len = 0;
1034
1035         u8 *buffer;
1036         char *hex_buffer;
1037
1038         int retval = ERROR_OK;
1039
1040         /* skip command character */
1041         packet++;
1042
1043         addr = strtoul(packet, &separator, 16);
1044
1045         if (*separator != ',')
1046         {
1047                 LOG_ERROR("incomplete read memory packet received, dropping connection");
1048                 return ERROR_SERVER_REMOTE_CLOSED;
1049         }
1050
1051         len = strtoul(separator+1, NULL, 16);
1052
1053         buffer = malloc(len);
1054
1055         LOG_DEBUG("addr: 0x%8.8x, len: 0x%8.8x", addr, len);
1056
1057         retval = target_read_buffer(target, addr, len, buffer);
1058
1059         if ((retval == ERROR_TARGET_DATA_ABORT) && (!gdb_report_data_abort))
1060         {
1061                 /* TODO : Here we have to lie and send back all zero's lest stack traces won't work.
1062                  * At some point this might be fixed in GDB, in which case this code can be removed.
1063                  *
1064                  * OpenOCD developers are acutely aware of this problem, but there is nothing
1065                  * gained by involving the user in this problem that hopefully will get resolved
1066                  * eventually
1067                  *
1068                  * http://sourceware.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gdb&pr=2395
1069                  *
1070                  * For now, the default is to fix up things to make current GDB versions work.
1071                  * This can be overwritten using the gdb_report_data_abort <'enable'|'disable'> command.
1072                  */
1073                 memset(buffer, 0, len);
1074                 retval = ERROR_OK;
1075         }
1076
1077         if (retval == ERROR_OK)
1078         {
1079                 hex_buffer = malloc(len * 2 + 1);
1080
1081                 int i;
1082                 for (i = 0; i < len; i++)
1083                 {
1084                         u8 t = buffer[i];
1085                         hex_buffer[2 * i] = DIGITS[(t >> 4) & 0xf];
1086                         hex_buffer[2 * i + 1] = DIGITS[t & 0xf];
1087                 }
1088
1089                 gdb_put_packet(connection, hex_buffer, len * 2);
1090
1091                 free(hex_buffer);
1092         }
1093         else
1094         {
1095                 retval = gdb_error(connection, retval);
1096         }
1097
1098         free(buffer);
1099
1100         return retval;
1101 }
1102
1103 int gdb_write_memory_packet(connection_t *connection, target_t *target, char *packet, int packet_size)
1104 {
1105         char *separator;
1106         u32 addr = 0;
1107         u32 len = 0;
1108
1109         u8 *buffer;
1110
1111         int i;
1112         int retval;
1113
1114         /* skip command character */
1115         packet++;
1116
1117         addr = strtoul(packet, &separator, 16);
1118
1119         if (*separator != ',')
1120         {
1121                 LOG_ERROR("incomplete write memory packet received, dropping connection");
1122                 return ERROR_SERVER_REMOTE_CLOSED;
1123         }
1124
1125         len = strtoul(separator+1, &separator, 16);
1126
1127         if (*(separator++) != ':')
1128         {
1129                 LOG_ERROR("incomplete write memory packet received, dropping connection");
1130                 return ERROR_SERVER_REMOTE_CLOSED;
1131         }
1132
1133         buffer = malloc(len);
1134
1135         LOG_DEBUG("addr: 0x%8.8x, len: 0x%8.8x", addr, len);
1136
1137         for (i=0; i<len; i++)
1138         {
1139                 u32 tmp;
1140                 sscanf(separator + 2*i, "%2x", &tmp);
1141                 buffer[i] = tmp;
1142         }
1143
1144         retval = target_write_buffer(target, addr, len, buffer);
1145
1146         if (retval == ERROR_OK)
1147         {
1148                 gdb_put_packet(connection, "OK", 2);
1149         }
1150         else
1151         {
1152                 retval = gdb_error(connection, retval);
1153         }
1154
1155         free(buffer);
1156
1157         return retval;
1158 }
1159
1160 int gdb_write_memory_binary_packet(connection_t *connection, target_t *target, char *packet, int packet_size)
1161 {
1162         char *separator;
1163         u32 addr = 0;
1164         u32 len = 0;
1165
1166         int retval;
1167
1168         /* skip command character */
1169         packet++;
1170
1171         addr = strtoul(packet, &separator, 16);
1172
1173         if (*separator != ',')
1174         {
1175                 LOG_ERROR("incomplete write memory binary packet received, dropping connection");
1176                 return ERROR_SERVER_REMOTE_CLOSED;
1177         }
1178
1179         len = strtoul(separator+1, &separator, 16);
1180
1181         if (*(separator++) != ':')
1182         {
1183                 LOG_ERROR("incomplete write memory binary packet received, dropping connection");
1184                 return ERROR_SERVER_REMOTE_CLOSED;
1185         }
1186
1187         retval = ERROR_OK;
1188         if (len)
1189         {
1190                 LOG_DEBUG("addr: 0x%8.8x, len: 0x%8.8x", addr, len);
1191
1192                 retval = target_write_buffer(target, addr, len, (u8*)separator);
1193         }
1194
1195         if (retval == ERROR_OK)
1196         {
1197                 gdb_put_packet(connection, "OK", 2);
1198         }
1199         else
1200         {
1201                 if ((retval = gdb_error(connection, retval)) != ERROR_OK)
1202                         return retval;
1203         }
1204
1205         return ERROR_OK;
1206 }
1207
1208 void gdb_step_continue_packet(connection_t *connection, target_t *target, char *packet, int packet_size)
1209 {
1210         int current = 0;
1211         u32 address = 0x0;
1212
1213         LOG_DEBUG("-");
1214
1215         if (packet_size > 1)
1216         {
1217                 packet[packet_size] = 0;
1218                 address = strtoul(packet + 1, NULL, 16);
1219         }
1220         else
1221         {
1222                 current = 1;
1223         }
1224
1225         if (packet[0] == 'c')
1226         {
1227                 LOG_DEBUG("continue");
1228                 target_invoke_script(connection->cmd_ctx, target, "pre_resume");
1229                 target_resume(target, current, address, 0, 0); /* resume at current address, don't handle breakpoints, not debugging */
1230         }
1231         else if (packet[0] == 's')
1232         {
1233                 LOG_DEBUG("step");
1234                 target->type->step(target, current, address, 0); /* step at current or address, don't handle breakpoints */
1235         }
1236 }
1237
1238 int gdb_breakpoint_watchpoint_packet(connection_t *connection, target_t *target, char *packet, int packet_size)
1239 {
1240         int type;
1241         enum breakpoint_type bp_type = BKPT_SOFT /* dummy init to avoid warning */;
1242         enum watchpoint_rw wp_type;
1243         u32 address;
1244         u32 size;
1245         char *separator;
1246         int retval;
1247
1248         LOG_DEBUG("-");
1249
1250         type = strtoul(packet + 1, &separator, 16);
1251
1252         if (type == 0)  /* memory breakpoint */
1253                 bp_type = BKPT_SOFT;
1254         else if (type == 1) /* hardware breakpoint */
1255                 bp_type = BKPT_HARD;
1256         else if (type == 2) /* write watchpoint */
1257                 wp_type = WPT_WRITE;
1258         else if (type == 3) /* read watchpoint */
1259                 wp_type = WPT_READ;
1260         else if (type == 4) /* access watchpoint */
1261                 wp_type = WPT_ACCESS;
1262
1263         if (*separator != ',')
1264         {
1265                 LOG_ERROR("incomplete breakpoint/watchpoint packet received, dropping connection");
1266                 return ERROR_SERVER_REMOTE_CLOSED;
1267         }
1268
1269         address = strtoul(separator+1, &separator, 16);
1270
1271         if (*separator != ',')
1272         {
1273                 LOG_ERROR("incomplete breakpoint/watchpoint packet received, dropping connection");
1274                 return ERROR_SERVER_REMOTE_CLOSED;
1275         }
1276
1277         size = strtoul(separator+1, &separator, 16);
1278
1279         switch (type)
1280         {
1281                 case 0:
1282                 case 1:
1283                         if (packet[0] == 'Z')
1284                         {
1285                                 if ((retval = breakpoint_add(target, address, size, bp_type)) != ERROR_OK)
1286                                 {
1287                                         if ((retval = gdb_error(connection, retval)) != ERROR_OK)
1288                                                 return retval;
1289                                 }
1290                                 else
1291                                 {
1292                                         gdb_put_packet(connection, "OK", 2);
1293                                 }
1294                         }
1295                         else
1296                         {
1297                                 breakpoint_remove(target, address);
1298                                 gdb_put_packet(connection, "OK", 2);
1299                         }
1300                         break;
1301                 case 2:
1302                 case 3:
1303                 case 4:
1304                 {
1305                         if (packet[0] == 'Z')
1306                         {
1307                                 if ((retval = watchpoint_add(target, address, size, type-2, 0, 0xffffffffu)) != ERROR_OK)
1308                                 {
1309                                         if ((retval = gdb_error(connection, retval)) != ERROR_OK)
1310                                                 return retval;
1311                                 }
1312                                 else
1313                                 {
1314                                         gdb_put_packet(connection, "OK", 2);
1315                                 }
1316                         }
1317                         else
1318                         {
1319                                 watchpoint_remove(target, address);
1320                                 gdb_put_packet(connection, "OK", 2);
1321                         }
1322                         break;
1323                 }
1324                 default:
1325                         break;
1326         }
1327
1328         return ERROR_OK;
1329 }
1330
1331 /* print out a string and allocate more space as needed, mainly used for XML at this point */
1332 void xml_printf(int *retval, char **xml, int *pos, int *size, const char *fmt, ...)
1333 {
1334         if (*retval != ERROR_OK)
1335         {
1336                 return;
1337         }
1338         int first = 1;
1339
1340         for (;;)
1341         {
1342                 if ((*xml == NULL) || (!first))
1343                 {
1344                         /* start by 0 to exercise all the code paths.
1345                          * Need minimum 2 bytes to fit 1 char and 0 terminator. */
1346
1347                         *size = *size * 2 + 2;
1348                         char *t = *xml;
1349                         *xml = realloc(*xml, *size);
1350                         if (*xml == NULL)
1351                         {
1352                                 if (t)
1353                                         free(t);
1354                                 *retval = ERROR_SERVER_REMOTE_CLOSED;
1355                                 return;
1356                         }
1357                 }
1358
1359                 va_list ap;
1360                 int ret;
1361                 va_start(ap, fmt);
1362                 ret = vsnprintf(*xml + *pos, *size - *pos, fmt, ap);
1363                 va_end(ap);
1364                 if ((ret > 0) && ((ret + 1) < *size - *pos))
1365                 {
1366                         *pos += ret;
1367                         return;
1368                 }
1369                 /* there was just enough or not enough space, allocate more. */
1370                 first = 0;
1371         }
1372 }
1373
1374 static int decode_xfer_read(char *buf, char **annex, int *ofs, unsigned int *len)
1375 {
1376         char *separator;
1377
1378         /* Extract and NUL-terminate the annex. */
1379         *annex = buf;
1380         while (*buf && *buf != ':')
1381                 buf++;
1382         if (*buf == '\0')
1383                 return -1;
1384         *buf++ = 0;
1385
1386         /* After the read marker and annex, qXfer looks like a
1387          * traditional 'm' packet. */
1388
1389         *ofs = strtoul(buf, &separator, 16);
1390
1391         if (*separator != ',')
1392                 return -1;
1393
1394         *len = strtoul(separator+1, NULL, 16);
1395
1396         return 0;
1397 }
1398
1399 int gdb_calc_blocksize(flash_bank_t *bank)
1400 {
1401         int i;
1402         int block_size = 0xffffffff;
1403
1404         /* loop through all sectors and return smallest sector size */
1405
1406         for (i = 0; i < bank->num_sectors; i++)
1407         {
1408                 if (bank->sectors[i].size < block_size)
1409                         block_size = bank->sectors[i].size;
1410         }
1411
1412         return block_size;
1413 }
1414
1415 static int compare_bank (const void * a, const void * b)
1416 {
1417         flash_bank_t *b1, *b2;
1418         b1=*((flash_bank_t **)a);
1419         b2=*((flash_bank_t **)b);
1420
1421         if (b1->base==b2->base)
1422         {
1423                 return 0;
1424         } else if (b1->base>b2->base)
1425         {
1426                 return 1;
1427         } else
1428         {
1429                 return -1;
1430         }
1431 }
1432
1433 int gdb_query_packet(connection_t *connection, target_t *target, char *packet, int packet_size)
1434 {
1435         command_context_t *cmd_ctx = connection->cmd_ctx;
1436
1437         if (strstr(packet, "qRcmd,"))
1438         {
1439                 if (packet_size > 6)
1440                 {
1441                         char *cmd;
1442                         int i;
1443                         cmd = malloc((packet_size - 6)/2 + 1);
1444                         for (i=0; i < (packet_size - 6)/2; i++)
1445                         {
1446                                 u32 tmp;
1447                                 sscanf(packet + 6 + 2*i, "%2x", &tmp);
1448                                 cmd[i] = tmp;
1449                         }
1450                         cmd[(packet_size - 6)/2] = 0x0;
1451
1452                         /* We want to print all debug output to GDB connection */
1453                         log_add_callback(gdb_log_callback, connection);
1454                         target_call_timer_callbacks_now();
1455                         command_run_line(cmd_ctx, cmd);
1456                         target_call_timer_callbacks_now();
1457                         log_remove_callback(gdb_log_callback, connection);
1458                         free(cmd);
1459                 }
1460                 gdb_put_packet(connection, "OK", 2);
1461                 return ERROR_OK;
1462         }
1463         else if (strstr(packet, "qCRC:"))
1464         {
1465                 if (packet_size > 5)
1466                 {
1467                         int retval;
1468                         char gdb_reply[10];
1469                         char *separator;
1470                         u32 checksum;
1471                         u32 addr = 0;
1472                         u32 len = 0;
1473
1474                         /* skip command character */
1475                         packet += 5;
1476
1477                         addr = strtoul(packet, &separator, 16);
1478
1479                         if (*separator != ',')
1480                         {
1481                                 LOG_ERROR("incomplete read memory packet received, dropping connection");
1482                                 return ERROR_SERVER_REMOTE_CLOSED;
1483                         }
1484
1485                         len = strtoul(separator + 1, NULL, 16);
1486
1487                         retval = target_checksum_memory(target, addr, len, &checksum);
1488
1489                         if (retval == ERROR_OK)
1490                         {
1491                                 snprintf(gdb_reply, 10, "C%8.8x", checksum);
1492                                 gdb_put_packet(connection, gdb_reply, 9);
1493                         }
1494                         else
1495                         {
1496                                 if ((retval = gdb_error(connection, retval)) != ERROR_OK)
1497                                         return retval;
1498                         }
1499
1500                         return ERROR_OK;
1501                 }
1502         }
1503         else if (strstr(packet, "qSupported"))
1504         {
1505                 /* we currently support packet size and qXfer:memory-map:read (if enabled)
1506                  * disable qXfer:features:read for the moment */
1507                 int retval = ERROR_OK;
1508                 char *buffer = NULL;
1509                 int pos = 0;
1510                 int size = 0;
1511
1512                 xml_printf(&retval, &buffer, &pos, &size,
1513                                 "PacketSize=%x;qXfer:memory-map:read%c;qXfer:features:read-",
1514                                 (GDB_BUFFER_SIZE - 1), ((gdb_use_memory_map == 1)&&(flash_get_bank_count()>0)) ? '+' : '-');
1515
1516                 if (retval != ERROR_OK)
1517                 {
1518                         gdb_send_error(connection, 01);
1519                         return ERROR_OK;
1520                 }
1521
1522                 gdb_put_packet(connection, buffer, strlen(buffer));
1523                 free(buffer);
1524
1525                 return ERROR_OK;
1526         }
1527         else if (strstr(packet, "qXfer:memory-map:read::")&&(flash_get_bank_count()>0))
1528         {
1529                 /* We get away with only specifying flash here. Regions that are not
1530                  * specified are treated as if we provided no memory map(if not we
1531                  * could detect the holes and mark them as RAM).
1532                  * Normally we only execute this code once, but no big deal if we
1533                  * have to regenerate it a couple of times. */
1534
1535                 flash_bank_t *p;
1536                 char *xml = NULL;
1537                 int size = 0;
1538                 int pos = 0;
1539                 int retval = ERROR_OK;
1540
1541                 int offset;
1542                 int length;
1543                 char *separator;
1544                 int blocksize;
1545
1546                 /* skip command character */
1547                 packet += 23;
1548
1549                 offset = strtoul(packet, &separator, 16);
1550                 length = strtoul(separator + 1, &separator, 16);
1551
1552                 xml_printf(&retval, &xml, &pos, &size, "<memory-map>\n");
1553
1554                 /*
1555                 sort banks in ascending order, we need to make non-flash memory be ram(or rather
1556                 read/write) by default for GDB.
1557                 GDB does not have a concept of non-cacheable read/write memory.
1558                  */
1559                 flash_bank_t **banks=malloc(sizeof(flash_bank_t *)*flash_get_bank_count());
1560                 int i;
1561
1562                 for (i=0; i<flash_get_bank_count(); i++)
1563                 {
1564                         p = get_flash_bank_by_num(i);
1565                         if (p == NULL)
1566                         {
1567                                 free(banks);
1568                                 retval = ERROR_FAIL;
1569                                 gdb_send_error(connection, retval);
1570                                 return retval;
1571                         }
1572                         banks[i]=p;
1573                 }
1574
1575                 qsort(banks, flash_get_bank_count(), sizeof(flash_bank_t *), compare_bank);
1576
1577                 u32 ram_start=0;
1578                 for (i=0; i<flash_get_bank_count(); i++)
1579                 {
1580                         p = banks[i];
1581
1582                         if (ram_start<p->base)
1583                         {
1584                                 xml_printf(&retval, &xml, &pos, &size, "<memory type=\"ram\" start=\"0x%x\" length=\"0x%x\"/>\n",
1585                                         ram_start, p->base-ram_start);
1586                         }
1587
1588                         /* if device has uneven sector sizes, eg. str7, lpc
1589                          * we pass the smallest sector size to gdb memory map */
1590                         blocksize = gdb_calc_blocksize(p);
1591
1592                         xml_printf(&retval, &xml, &pos, &size, "<memory type=\"flash\" start=\"0x%x\" length=\"0x%x\">\n" \
1593                                 "<property name=\"blocksize\">0x%x</property>\n" \
1594                                 "</memory>\n", \
1595                                 p->base, p->size, blocksize);
1596                         ram_start=p->base+p->size;
1597                 }
1598                 if (ram_start!=0)
1599                 {
1600                         xml_printf(&retval, &xml, &pos, &size, "<memory type=\"ram\" start=\"0x%x\" length=\"0x%x\"/>\n",
1601                                 ram_start, 0-ram_start);
1602                 } else
1603                 {
1604                         /* a flash chip could be at the very end of the 32 bit address space, in which case
1605                         ram_start will be precisely 0 */
1606                 }
1607
1608                 free(banks);
1609                 banks = NULL;
1610
1611                 xml_printf(&retval, &xml, &pos, &size, "</memory-map>\n");
1612
1613                 if (retval != ERROR_OK)
1614                 {
1615                         gdb_send_error(connection, retval);
1616                         return retval;
1617                 }
1618
1619                 if (offset + length > pos)
1620                 {
1621                         length = pos - offset;
1622                 }
1623
1624                 char *t = malloc(length + 1);
1625                 t[0] = 'l';
1626                 memcpy(t + 1, xml + offset, length);
1627                 gdb_put_packet(connection, t, length + 1);
1628
1629                 free(t);
1630                 free(xml);
1631                 return ERROR_OK;
1632         }
1633         else if (strstr(packet, "qXfer:features:read:"))
1634         {
1635                 char *xml = NULL;
1636                 int size = 0;
1637                 int pos = 0;
1638                 int retval = ERROR_OK;
1639
1640                 int offset;
1641                 unsigned int length;
1642                 char *annex;
1643
1644                 /* skip command character */
1645                 packet += 20;
1646
1647                 if (decode_xfer_read(packet, &annex, &offset, &length) < 0)
1648                 {
1649                         gdb_send_error(connection, 01);
1650                         return ERROR_OK;
1651                 }
1652
1653                 if (strcmp(annex, "target.xml") != 0)
1654                 {
1655                         gdb_send_error(connection, 01);
1656                         return ERROR_OK;
1657                 }
1658
1659                 xml_printf(&retval, &xml, &pos, &size, \
1660                         "l<target version=\"1.0\">\n<architecture>arm</architecture>\n</target>\n");
1661
1662                 if (retval != ERROR_OK)
1663                 {
1664                         gdb_send_error(connection, retval);
1665                         return retval;
1666                 }
1667
1668                 gdb_put_packet(connection, xml, strlen(xml));
1669
1670                 free(xml);
1671                 return ERROR_OK;
1672         }
1673
1674         gdb_put_packet(connection, "", 0);
1675         return ERROR_OK;
1676 }
1677
1678 int gdb_v_packet(connection_t *connection, target_t *target, char *packet, int packet_size)
1679 {
1680         gdb_connection_t *gdb_connection = connection->priv;
1681         gdb_service_t *gdb_service = connection->service->priv;
1682         int result;
1683
1684         /* if flash programming disabled - send a empty reply */
1685
1686         if (gdb_flash_program == 0)
1687         {
1688                 gdb_put_packet(connection, "", 0);
1689                 return ERROR_OK;
1690         }
1691
1692         if (strstr(packet, "vFlashErase:"))
1693         {
1694                 unsigned long addr;
1695                 unsigned long length;
1696
1697                 char *parse = packet + 12;
1698                 if (*parse == '\0')
1699                 {
1700                         LOG_ERROR("incomplete vFlashErase packet received, dropping connection");
1701                         return ERROR_SERVER_REMOTE_CLOSED;
1702                 }
1703
1704                 addr = strtoul(parse, &parse, 16);
1705
1706                 if (*(parse++) != ',' || *parse == '\0')
1707                 {
1708                         LOG_ERROR("incomplete vFlashErase packet received, dropping connection");
1709                         return ERROR_SERVER_REMOTE_CLOSED;
1710                 }
1711
1712                 length = strtoul(parse, &parse, 16);
1713
1714                 if (*parse != '\0')
1715                 {
1716                         LOG_ERROR("incomplete vFlashErase packet received, dropping connection");
1717                         return ERROR_SERVER_REMOTE_CLOSED;
1718                 }
1719
1720                 /* assume all sectors need erasing - stops any problems
1721                  * when flash_write is called multiple times */
1722                 flash_set_dirty();
1723
1724                 /* perform any target specific operations before the erase */
1725                 target_call_event_callbacks(gdb_service->target, TARGET_EVENT_GDB_PROGRAM);
1726
1727                 /* perform erase */
1728                 if ((result = flash_erase_address_range(gdb_service->target, addr, length)) != ERROR_OK)
1729                 {
1730                         /* GDB doesn't evaluate the actual error number returned,
1731                          * treat a failed erase as an I/O error
1732                          */
1733                         gdb_send_error(connection, EIO);
1734                         LOG_ERROR("flash_erase returned %i", result);
1735                 }
1736                 else
1737                         gdb_put_packet(connection, "OK", 2);
1738
1739                 return ERROR_OK;
1740         }
1741
1742         if (strstr(packet, "vFlashWrite:"))
1743         {
1744                 unsigned long addr;
1745                 unsigned long length;
1746                 char *parse = packet + 12;
1747
1748                 if (*parse == '\0')
1749                 {
1750                         LOG_ERROR("incomplete vFlashErase packet received, dropping connection");
1751                         return ERROR_SERVER_REMOTE_CLOSED;
1752                 }
1753                 addr = strtoul(parse, &parse, 16);
1754                 if (*(parse++) != ':')
1755                 {
1756                         LOG_ERROR("incomplete vFlashErase packet received, dropping connection");
1757                         return ERROR_SERVER_REMOTE_CLOSED;
1758                 }
1759                 length = packet_size - (parse - packet);
1760
1761                 /* create a new image if there isn't already one */
1762                 if (gdb_connection->vflash_image == NULL)
1763                 {
1764                         gdb_connection->vflash_image = malloc(sizeof(image_t));
1765                         image_open(gdb_connection->vflash_image, "", "build");
1766                 }
1767
1768                 /* create new section with content from packet buffer */
1769                 image_add_section(gdb_connection->vflash_image, addr, length, 0x0, (u8*)parse);
1770
1771                 gdb_put_packet(connection, "OK", 2);
1772
1773                 return ERROR_OK;
1774         }
1775
1776         if (!strcmp(packet, "vFlashDone"))
1777         {
1778                 u32 written;
1779
1780                 /* process the flashing buffer. No need to erase as GDB
1781                  * always issues a vFlashErase first. */
1782                 if ((result = flash_write(gdb_service->target, gdb_connection->vflash_image, &written, 0)) != ERROR_OK)
1783                 {
1784                         if (result == ERROR_FLASH_DST_OUT_OF_BANK)
1785                                 gdb_put_packet(connection, "E.memtype", 9);
1786                         else
1787                                 gdb_send_error(connection, EIO);
1788                         }
1789                 else
1790                 {
1791                         LOG_DEBUG("wrote %u bytes from vFlash image to flash", written);
1792                         gdb_put_packet(connection, "OK", 2);
1793                 }
1794
1795                 image_close(gdb_connection->vflash_image);
1796                 free(gdb_connection->vflash_image);
1797                 gdb_connection->vflash_image = NULL;
1798
1799                 return ERROR_OK;
1800         }
1801
1802         gdb_put_packet(connection, "", 0);
1803         return ERROR_OK;
1804 }
1805
1806 int gdb_detach(connection_t *connection, target_t *target)
1807 {
1808         switch( detach_mode )
1809         {
1810                 case GDB_DETACH_RESUME:
1811                         target_invoke_script(connection->cmd_ctx, target, "pre_resume");
1812                         target_resume(target, 1, 0, 1, 0);
1813                         break;
1814
1815                 case GDB_DETACH_RESET:
1816                         /* FIX?? make this configurable?? */
1817                         target_process_reset(connection->cmd_ctx, RESET_HALT);
1818                         break;
1819
1820                 case GDB_DETACH_HALT:
1821                         target_halt(target);
1822                         break;
1823
1824                 case GDB_DETACH_NOTHING:
1825                         break;
1826         }
1827
1828         gdb_put_packet(connection, "OK", 2);
1829
1830         return ERROR_OK;
1831 }
1832
1833 static void gdb_log_callback(void *priv, const char *file, int line,
1834                 const char *function, const char *string)
1835 {
1836         connection_t *connection = priv;
1837         gdb_connection_t *gdb_con = connection->priv;
1838
1839         if (gdb_con->busy)
1840         {
1841                 /* do not reply this using the O packet */
1842                 return;
1843         }
1844
1845         gdb_output_con(connection, string);
1846 }
1847
1848 /* Do not allocate this on the stack */
1849 char gdb_packet_buffer[GDB_BUFFER_SIZE];
1850
1851 int gdb_input_inner(connection_t *connection)
1852 {
1853         gdb_service_t *gdb_service = connection->service->priv;
1854         target_t *target = gdb_service->target;
1855         char *packet=gdb_packet_buffer;
1856         int packet_size;
1857         int retval;
1858         gdb_connection_t *gdb_con = connection->priv;
1859         static int extended_protocol = 0;
1860
1861         /* drain input buffer */
1862         do
1863         {
1864                 packet_size = GDB_BUFFER_SIZE-1;
1865                 if ((retval = gdb_get_packet(connection, packet, &packet_size)) != ERROR_OK)
1866                 {
1867                         return retval;
1868                 }
1869
1870                 /* terminate with zero */
1871                 packet[packet_size] = 0;
1872
1873                 LOG_DEBUG("received packet: '%s'", packet);
1874
1875                 if (packet_size > 0)
1876                 {
1877                         retval = ERROR_OK;
1878                         switch (packet[0])
1879                         {
1880                                 case 'H':
1881                                         /* Hct... -- set thread
1882                                          * we don't have threads, send empty reply */
1883                                         gdb_put_packet(connection, NULL, 0);
1884                                         break;
1885                                 case 'q':
1886                                         retval = gdb_query_packet(connection, target, packet, packet_size);
1887                                         break;
1888                                 case 'g':
1889                                         retval = gdb_get_registers_packet(connection, target, packet, packet_size);
1890                                         break;
1891                                 case 'G':
1892                                         retval = gdb_set_registers_packet(connection, target, packet, packet_size);
1893                                         break;
1894                                 case 'p':
1895                                         retval = gdb_get_register_packet(connection, target, packet, packet_size);
1896                                         break;
1897                                 case 'P':
1898                                         retval = gdb_set_register_packet(connection, target, packet, packet_size);
1899                                         break;
1900                                 case 'm':
1901                                         retval = gdb_read_memory_packet(connection, target, packet, packet_size);
1902                                         break;
1903                                 case 'M':
1904                                         retval = gdb_write_memory_packet(connection, target, packet, packet_size);
1905                                         break;
1906                                 case 'z':
1907                                 case 'Z':
1908                                         retval = gdb_breakpoint_watchpoint_packet(connection, target, packet, packet_size);
1909                                         break;
1910                                 case '?':
1911                                         gdb_last_signal_packet(connection, target, packet, packet_size);
1912                                         break;
1913                                 case 'c':
1914                                 case 's':
1915                                         {
1916                                                 if (target->state != TARGET_HALTED)
1917                                                 {
1918                                                         /* If the target isn't in the halted state, then we can't
1919                                                          * step/continue. This might be early setup, etc.
1920                                                          */
1921                                                         char sig_reply[4];
1922                                                         snprintf(sig_reply, 4, "T%2.2x", 2);
1923                                                         gdb_put_packet(connection, sig_reply, 3);
1924                                                 } else
1925                                                 {
1926                                                         /* We're running/stepping, in which case we can
1927                                                          * forward log output until the target is halted
1928                                                          */
1929                                                         gdb_connection_t *gdb_con = connection->priv;
1930                                                         gdb_con->frontend_state = TARGET_RUNNING;
1931                                                         log_add_callback(gdb_log_callback, connection);
1932                                                         gdb_step_continue_packet(connection, target, packet, packet_size);
1933                                                 }
1934                                         }
1935                                         break;
1936                                 case 'v':
1937                                         retval = gdb_v_packet(connection, target, packet, packet_size);
1938                                         break;
1939                                 case 'D':
1940                                         retval = gdb_detach(connection, target);
1941                                         extended_protocol = 0;
1942                                         break;
1943                                 case 'X':
1944                                         if ((retval = gdb_write_memory_binary_packet(connection, target, packet, packet_size)) != ERROR_OK)
1945                                                 return retval;
1946                                         break;
1947                                 case 'k':
1948                                         if (extended_protocol != 0)
1949                                                 break;
1950                                         gdb_put_packet(connection, "OK", 2);
1951                                         return ERROR_SERVER_REMOTE_CLOSED;
1952                                 case '!':
1953                                         /* handle extended remote protocol */
1954                                         extended_protocol = 1;
1955                                         gdb_put_packet(connection, "OK", 2);
1956                                         break;
1957                                 case 'R':
1958                                         /* handle extended restart packet */
1959                                         command_run_linef(connection->cmd_ctx, "ocd_gdb_restart %d", get_num_by_target(target));
1960                                         break;
1961                                 default:
1962                                         /* ignore unkown packets */
1963                                         LOG_DEBUG("ignoring 0x%2.2x packet", packet[0]);
1964                                         gdb_put_packet(connection, NULL, 0);
1965                                         break;
1966                         }
1967
1968                         /* if a packet handler returned an error, exit input loop */
1969                         if (retval != ERROR_OK)
1970                                 return retval;
1971                 }
1972
1973                 if (gdb_con->ctrl_c)
1974                 {
1975                         if (target->state == TARGET_RUNNING)
1976                         {
1977                                 target_halt(target);
1978                                 gdb_con->ctrl_c = 0;
1979                         }
1980                 }
1981
1982         } while (gdb_con->buf_cnt > 0);
1983
1984         return ERROR_OK;
1985 }
1986
1987 int gdb_input(connection_t *connection)
1988 {
1989         int retval = gdb_input_inner(connection);
1990         gdb_connection_t *gdb_con = connection->priv;
1991         if (retval == ERROR_SERVER_REMOTE_CLOSED)
1992                 return retval;
1993
1994         /* logging does not propagate the error, yet can set th gdb_con->closed flag */
1995         if (gdb_con->closed)
1996                 return ERROR_SERVER_REMOTE_CLOSED;
1997
1998         /* we'll recover from any other errors(e.g. temporary timeouts, etc.) */
1999         return ERROR_OK;
2000 }
2001
2002 int gdb_init()
2003 {
2004         gdb_service_t *gdb_service;
2005         target_t *target = targets;
2006         int i = 0;
2007
2008         if (!target)
2009         {
2010                 LOG_WARNING("no gdb ports allocated as no target has been specified");
2011                 return ERROR_OK;
2012         }
2013
2014         if (gdb_port == 0)
2015         {
2016                 LOG_WARNING("no gdb port specified, using default port 3333");
2017                 gdb_port = 3333;
2018         }
2019
2020         while (target)
2021         {
2022                 char service_name[8];
2023
2024                 snprintf(service_name, 8, "gdb-%2.2i", i);
2025
2026                 gdb_service = malloc(sizeof(gdb_service_t));
2027                 gdb_service->target = target;
2028
2029                 add_service("gdb", CONNECTION_GDB, gdb_port + i, 1, gdb_new_connection, gdb_input, gdb_connection_closed, gdb_service);
2030
2031                 LOG_DEBUG("gdb service for target %s at port %i", target->type->name, gdb_port + i);
2032
2033                 i++;
2034                 target = target->next;
2035         }
2036
2037         return ERROR_OK;
2038 }
2039
2040 /* daemon configuration command gdb_port */
2041 int handle_gdb_port_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2042 {
2043         if (argc == 0)
2044                 return ERROR_OK;
2045
2046         /* only if the port wasn't overwritten by cmdline */
2047         if (gdb_port == 0)
2048                 gdb_port = strtoul(args[0], NULL, 0);
2049
2050         return ERROR_OK;
2051 }
2052
2053 int handle_gdb_detach_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2054 {
2055         if (argc == 1)
2056         {
2057                 if (strcmp(args[0], "resume") == 0)
2058                 {
2059                         detach_mode = GDB_DETACH_RESUME;
2060                         return ERROR_OK;
2061                 }
2062                 else if (strcmp(args[0], "reset") == 0)
2063                 {
2064                         detach_mode = GDB_DETACH_RESET;
2065                         return ERROR_OK;
2066                 }
2067                 else if (strcmp(args[0], "halt") == 0)
2068                 {
2069                         detach_mode = GDB_DETACH_HALT;
2070                         return ERROR_OK;
2071                 }
2072                 else if (strcmp(args[0], "nothing") == 0)
2073                 {
2074                         detach_mode = GDB_DETACH_NOTHING;
2075                         return ERROR_OK;
2076                 }
2077         }
2078
2079         LOG_WARNING("invalid gdb_detach configuration directive: %s", args[0]);
2080         return ERROR_OK;
2081 }
2082
2083 int handle_gdb_memory_map_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2084 {
2085         if (argc == 1)
2086         {
2087                 if (strcmp(args[0], "enable") == 0)
2088                 {
2089                         gdb_use_memory_map = 1;
2090                         return ERROR_OK;
2091                 }
2092                 else if (strcmp(args[0], "disable") == 0)
2093                 {
2094                         gdb_use_memory_map = 0;
2095                         return ERROR_OK;
2096                 }
2097         }
2098
2099         LOG_WARNING("invalid gdb_memory_map configuration directive: %s", args[0]);
2100         return ERROR_OK;
2101 }
2102
2103 int handle_gdb_flash_program_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2104 {
2105         if (argc == 1)
2106         {
2107                 if (strcmp(args[0], "enable") == 0)
2108                 {
2109                         gdb_flash_program = 1;
2110                         return ERROR_OK;
2111                 }
2112                 else if (strcmp(args[0], "disable") == 0)
2113                 {
2114                         gdb_flash_program = 0;
2115                         return ERROR_OK;
2116                 }
2117         }
2118
2119         LOG_WARNING("invalid gdb_memory_map configuration directive: %s", args[0]);
2120         return ERROR_OK;
2121 }
2122
2123 int handle_gdb_report_data_abort_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2124 {
2125         if (argc == 1)
2126         {
2127                 if (strcmp(args[0], "enable") == 0)
2128                 {
2129                         gdb_report_data_abort = 1;
2130                         return ERROR_OK;
2131                 }
2132                 else if (strcmp(args[0], "disable") == 0)
2133                 {
2134                         gdb_report_data_abort = 0;
2135                         return ERROR_OK;
2136                 }
2137         }
2138
2139         LOG_WARNING("invalid gdb_report_data_abort configuration directive: %s", args[0]);
2140         return ERROR_OK;
2141 }
2142
2143 int gdb_register_commands(command_context_t *command_context)
2144 {
2145         register_command(command_context, NULL, "gdb_port", handle_gdb_port_command,
2146                         COMMAND_CONFIG, "");
2147         register_command(command_context, NULL, "gdb_detach", handle_gdb_detach_command,
2148                         COMMAND_CONFIG, "");
2149         register_command(command_context, NULL, "gdb_memory_map", handle_gdb_memory_map_command,
2150                         COMMAND_CONFIG, "");
2151         register_command(command_context, NULL, "gdb_flash_program", handle_gdb_flash_program_command,
2152                         COMMAND_CONFIG, "");
2153         register_command(command_context, NULL, "gdb_report_data_abort", handle_gdb_report_data_abort_command,
2154                         COMMAND_CONFIG, "");
2155         return ERROR_OK;
2156 }