1 /***************************************************************************
2 * Copyright (C) 2005 by Dominic Rath *
3 * Dominic.Rath@gmx.de *
5 * Copyright (C) 2007,2008 Øyvind Harboe *
6 * oyvind.harboe@zylin.com *
8 * This program is free software; you can redistribute it and/or modify *
9 * it under the terms of the GNU General Public License as published by *
10 * the Free Software Foundation; either version 2 of the License, or *
11 * (at your option) any later version. *
13 * This program is distributed in the hope that it will be useful, *
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
16 * GNU General Public License for more details. *
18 * You should have received a copy of the GNU General Public License *
19 * along with this program; if not, write to the *
20 * Free Software Foundation, Inc., *
21 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
22 ***************************************************************************/
27 #include "replacements.h"
29 #include "gdb_server.h"
33 #include "binarybuffer.h"
35 #include "breakpoints.h"
37 #include "target_request.h"
38 #include "configuration.h"
46 #define _DEBUG_GDB_IO_
49 static int gdb_breakpoint_override;
50 static enum breakpoint_type gdb_breakpoint_override_type;
52 extern int gdb_error(connection_t *connection, int retval);
53 static unsigned short gdb_port;
54 static const char *DIGITS = "0123456789abcdef";
56 static void gdb_log_callback(void *priv, const char *file, int line,
57 const char *function, const char *string);
67 /* target behaviour on gdb detach */
68 enum gdb_detach_mode detach_mode = GDB_DETACH_RESUME;
70 /* set if we are sending a memory map to gdb
71 * via qXfer:memory-map:read packet */
72 /* enabled by default*/
73 int gdb_use_memory_map = 1;
74 /* enabled by default*/
75 int gdb_flash_program = 1;
77 /* if set, data aborts cause an error to be reported in memory read packets
78 * see the code in gdb_read_memory_packet() for further explanations */
79 int gdb_report_data_abort = 0;
81 int gdb_last_signal(target_t *target)
83 switch (target->debug_reason)
85 case DBG_REASON_DBGRQ:
86 return 0x2; /* SIGINT */
87 case DBG_REASON_BREAKPOINT:
88 case DBG_REASON_WATCHPOINT:
89 case DBG_REASON_WPTANDBKPT:
90 return 0x05; /* SIGTRAP */
91 case DBG_REASON_SINGLESTEP:
92 return 0x05; /* SIGTRAP */
93 case DBG_REASON_NOTHALTED:
94 return 0x0; /* no signal... shouldn't happen */
96 LOG_USER("undefined debug reason %d - target needs reset", target->debug_reason);
101 int check_pending(connection_t *connection, int timeout_s, int *got_data)
103 /* a non-blocking socket will block if there is 0 bytes available on the socket,
104 * but return with as many bytes as are available immediately
108 gdb_connection_t *gdb_con = connection->priv;
114 if (gdb_con->buf_cnt>0)
121 FD_SET(connection->fd, &read_fds);
123 tv.tv_sec = timeout_s;
125 if (select(connection->fd + 1, &read_fds, NULL, NULL, &tv) == 0)
127 /* This can typically be because a "monitor" command took too long
128 * before printing any progress messages
132 return ERROR_GDB_TIMEOUT;
138 *got_data=FD_ISSET(connection->fd, &read_fds)!=0;
142 int gdb_get_char(connection_t *connection, int* next_char)
144 gdb_connection_t *gdb_con = connection->priv;
147 #ifdef _DEBUG_GDB_IO_
151 if (gdb_con->buf_cnt-- > 0)
153 *next_char = *(gdb_con->buf_p++);
154 if (gdb_con->buf_cnt > 0)
155 connection->input_pending = 1;
157 connection->input_pending = 0;
159 #ifdef _DEBUG_GDB_IO_
160 LOG_DEBUG("returned char '%c' (0x%2.2x)", *next_char, *next_char);
168 retval=check_pending(connection, 1, NULL);
169 if (retval!=ERROR_OK)
171 gdb_con->buf_cnt = read_socket(connection->fd, gdb_con->buffer, GDB_BUFFER_SIZE);
172 if (gdb_con->buf_cnt > 0)
176 if (gdb_con->buf_cnt == 0)
179 return ERROR_SERVER_REMOTE_CLOSED;
183 errno = WSAGetLastError();
190 case WSAECONNABORTED:
192 return ERROR_SERVER_REMOTE_CLOSED;
195 return ERROR_SERVER_REMOTE_CLOSED;
197 LOG_ERROR("read: %d", errno);
208 return ERROR_SERVER_REMOTE_CLOSED;
211 return ERROR_SERVER_REMOTE_CLOSED;
213 LOG_ERROR("read: %s", strerror(errno));
215 return ERROR_SERVER_REMOTE_CLOSED;
220 #ifdef _DEBUG_GDB_IO_
221 debug_buffer = malloc(gdb_con->buf_cnt + 1);
222 memcpy(debug_buffer, gdb_con->buffer, gdb_con->buf_cnt);
223 debug_buffer[gdb_con->buf_cnt] = 0;
224 LOG_DEBUG("received '%s'", debug_buffer);
228 gdb_con->buf_p = gdb_con->buffer;
230 *next_char = *(gdb_con->buf_p++);
231 if (gdb_con->buf_cnt > 0)
232 connection->input_pending = 1;
234 connection->input_pending = 0;
235 #ifdef _DEBUG_GDB_IO_
236 LOG_DEBUG("returned char '%c' (0x%2.2x)", *next_char, *next_char);
242 int gdb_putback_char(connection_t *connection, int last_char)
244 gdb_connection_t *gdb_con = connection->priv;
246 if (gdb_con->buf_p > gdb_con->buffer)
248 *(--gdb_con->buf_p) = last_char;
253 LOG_ERROR("BUG: couldn't put character back");
259 /* The only way we can detect that the socket is closed is the first time
260 * we write to it, we will fail. Subsequent write operations will
261 * succeed. Shudder! */
262 int gdb_write(connection_t *connection, void *data, int len)
264 gdb_connection_t *gdb_con = connection->priv;
266 return ERROR_SERVER_REMOTE_CLOSED;
268 if (write_socket(connection->fd, data, len) == len)
273 return ERROR_SERVER_REMOTE_CLOSED;
276 int gdb_put_packet_inner(connection_t *connection, char *buffer, int len)
279 unsigned char my_checksum = 0;
280 #ifdef _DEBUG_GDB_IO_
285 gdb_connection_t *gdb_con = connection->priv;
287 for (i = 0; i < len; i++)
288 my_checksum += buffer[i];
290 #ifdef _DEBUG_GDB_IO_
292 * At this point we should have nothing in the input queue from GDB,
293 * however sometimes '-' is sent even though we've already received
294 * an ACK (+) for everything we've sent off.
299 if ((retval=check_pending(connection, 0, &gotdata))!=ERROR_OK)
303 if ((retval = gdb_get_char(connection, &reply)) != ERROR_OK)
305 LOG_WARNING("Discard unexpected char %c", reply);
311 #ifdef _DEBUG_GDB_IO_
312 debug_buffer = malloc(len + 1);
313 memcpy(debug_buffer, buffer, len);
314 debug_buffer[len] = 0;
315 LOG_DEBUG("sending packet '$%s#%2.2x'", debug_buffer, my_checksum);
319 char local_buffer[1024];
320 local_buffer[0] = '$';
321 if (len+4 <= sizeof(local_buffer))
323 /* performance gain on smaller packets by only a single call to gdb_write() */
324 memcpy(local_buffer+1, buffer, len++);
325 local_buffer[len++] = '#';
326 local_buffer[len++] = DIGITS[(my_checksum >> 4) & 0xf];
327 local_buffer[len++] = DIGITS[my_checksum & 0xf];
328 gdb_write(connection, local_buffer, len);
332 /* larger packets are transmitted directly from caller supplied buffer
333 by several calls to gdb_write() to avoid dynamic allocation */
334 local_buffer[1] = '#';
335 local_buffer[2] = DIGITS[(my_checksum >> 4) & 0xf];
336 local_buffer[3] = DIGITS[my_checksum & 0xf];
337 gdb_write(connection, local_buffer, 1);
338 gdb_write(connection, buffer, len);
339 gdb_write(connection, local_buffer+1, 3);
342 if (gdb_con->noack_mode)
345 if ((retval = gdb_get_char(connection, &reply)) != ERROR_OK)
350 else if (reply == '-')
352 /* Stop sending output packets for now */
353 log_remove_callback(gdb_log_callback, connection);
354 LOG_WARNING("negative reply, retrying");
356 else if (reply == 0x3)
359 if ((retval = gdb_get_char(connection, &reply)) != ERROR_OK)
363 else if (reply == '-')
365 /* Stop sending output packets for now */
366 log_remove_callback(gdb_log_callback, connection);
367 LOG_WARNING("negative reply, retrying");
371 LOG_ERROR("unknown character 0x%2.2x in reply, dropping connection", reply);
373 return ERROR_SERVER_REMOTE_CLOSED;
378 LOG_ERROR("unknown character 0x%2.2x in reply, dropping connection", reply);
380 return ERROR_SERVER_REMOTE_CLOSED;
384 return ERROR_SERVER_REMOTE_CLOSED;
389 int gdb_put_packet(connection_t *connection, char *buffer, int len)
391 gdb_connection_t *gdb_con = connection->priv;
393 int retval = gdb_put_packet_inner(connection, buffer, len);
398 int gdb_get_packet_inner(connection_t *connection, char *buffer, int *len)
404 unsigned char my_checksum = 0;
405 gdb_connection_t *gdb_con = connection->priv;
411 if ((retval = gdb_get_char(connection, &character)) != ERROR_OK)
414 #ifdef _DEBUG_GDB_IO_
415 LOG_DEBUG("character: '%c'", character);
423 /* gdb sends a dummy ack '+' at every remote connect - see remote_start_remote (remote.c)
424 * incase anyone tries to debug why they receive this warning every time */
425 LOG_WARNING("acknowledgment received, but no packet pending");
428 LOG_WARNING("negative acknowledgment, but no packet pending");
435 LOG_WARNING("ignoring character 0x%x", character);
438 } while (character != '$');
443 gdb_connection_t *gdb_con = connection->priv;
446 /* The common case is that we have an entire packet with no escape chars.
447 * We need to leave at least 2 bytes in the buffer to have
448 * gdb_get_char() update various bits and bobs correctly.
450 if ((gdb_con->buf_cnt > 2) && ((gdb_con->buf_cnt+count) < *len))
452 /* The compiler will struggle a bit with constant propagation and
453 * aliasing, so we help it by showing that these values do not
454 * change inside the loop
457 char *buf = gdb_con->buf_p;
458 int run = gdb_con->buf_cnt - 2;
465 if (character == '#')
467 /* Danger! character can be '#' when esc is
468 * used so we need an explicit boolean for done here.
474 if (character == '}')
476 /* data transmitted in binary mode (X packet)
477 * uses 0x7d as escape character */
478 my_checksum += character & 0xff;
481 my_checksum += character & 0xff;
482 buffer[count++] = (character ^ 0x20) & 0xff;
486 my_checksum += character & 0xff;
487 buffer[count++] = character & 0xff;
491 gdb_con->buf_cnt -= i;
497 LOG_ERROR("packet buffer too small");
498 return ERROR_GDB_BUFFER_TOO_SMALL;
501 if ((retval = gdb_get_char(connection, &character)) != ERROR_OK)
504 if (character == '#')
507 if (character == '}')
509 /* data transmitted in binary mode (X packet)
510 * uses 0x7d as escape character */
511 my_checksum += character & 0xff;
512 if ((retval = gdb_get_char(connection, &character)) != ERROR_OK)
514 my_checksum += character & 0xff;
515 buffer[count++] = (character ^ 0x20) & 0xff;
519 my_checksum += character & 0xff;
520 buffer[count++] = character & 0xff;
526 if ((retval = gdb_get_char(connection, &character)) != ERROR_OK)
528 checksum[0] = character;
529 if ((retval = gdb_get_char(connection, &character)) != ERROR_OK)
531 checksum[1] = character;
534 if (my_checksum == strtoul(checksum, NULL, 16))
536 if (gdb_con->noack_mode)
538 gdb_write(connection, "+", 1);
542 if (!gdb_con->noack_mode)
544 LOG_WARNING("checksum error, requesting retransmission");
545 gdb_write(connection, "-", 1);
549 LOG_WARNING("checksum error, no-ack-mode");
554 return ERROR_SERVER_REMOTE_CLOSED;
559 int gdb_get_packet(connection_t *connection, char *buffer, int *len)
561 gdb_connection_t *gdb_con = connection->priv;
563 int retval = gdb_get_packet_inner(connection, buffer, len);
568 int gdb_output_con(connection_t *connection, const char* line)
573 bin_size = strlen(line);
575 hex_buffer = malloc(bin_size*2 + 2);
576 if (hex_buffer == NULL)
577 return ERROR_GDB_BUFFER_TOO_SMALL;
580 for (i=0; i<bin_size; i++)
581 snprintf(hex_buffer + 1 + i*2, 3, "%2.2x", line[i]);
582 hex_buffer[bin_size*2+1] = 0;
584 gdb_put_packet(connection, hex_buffer, bin_size*2 + 1);
590 int gdb_output(struct command_context_s *context, const char* line)
592 /* this will be dumped to the log and also sent as an O packet if possible */
593 LOG_USER_N("%s", line);
597 int gdb_program_handler(struct target_s *target, enum target_event event, void *priv)
599 struct command_context_s *cmd_ctx = priv;
601 target_invoke_script(cmd_ctx, target, "gdb_program");
602 jtag_execute_queue();
607 static void gdb_frontend_halted(struct target_s *target, connection_t *connection)
609 gdb_connection_t *gdb_connection = connection->priv;
611 /* In the GDB protocol when we are stepping or coninuing execution,
612 * we have a lingering reply. Upon receiving a halted event
613 * when we have that lingering packet, we reply to the original
614 * step or continue packet.
616 * Executing monitor commands can bring the target in and
617 * out of the running state so we'll see lots of TARGET_EVENT_XXX
618 * that are to be ignored.
620 if (gdb_connection->frontend_state == TARGET_RUNNING)
624 /* stop forwarding log packets! */
625 log_remove_callback(gdb_log_callback, connection);
627 if (gdb_connection->ctrl_c)
630 gdb_connection->ctrl_c = 0;
634 signal = gdb_last_signal(target);
637 snprintf(sig_reply, 4, "T%2.2x", signal);
638 gdb_put_packet(connection, sig_reply, 3);
639 gdb_connection->frontend_state = TARGET_HALTED;
643 int gdb_target_callback_event_handler(struct target_s *target, enum target_event event, void *priv)
645 connection_t *connection = priv;
649 case TARGET_EVENT_HALTED:
650 gdb_frontend_halted(target, connection);
652 case TARGET_EVENT_GDB_PROGRAM:
653 gdb_program_handler(target, event, connection->cmd_ctx);
663 int gdb_new_connection(connection_t *connection)
665 gdb_connection_t *gdb_connection = malloc(sizeof(gdb_connection_t));
666 gdb_service_t *gdb_service = connection->service->priv;
670 connection->priv = gdb_connection;
672 /* initialize gdb connection information */
673 gdb_connection->buf_p = gdb_connection->buffer;
674 gdb_connection->buf_cnt = 0;
675 gdb_connection->ctrl_c = 0;
676 gdb_connection->frontend_state = TARGET_HALTED;
677 gdb_connection->vflash_image = NULL;
678 gdb_connection->closed = 0;
679 gdb_connection->busy = 0;
680 gdb_connection->noack_mode = 0;
682 /* send ACK to GDB for debug request */
683 gdb_write(connection, "+", 1);
685 /* output goes through gdb connection */
686 command_set_output_handler(connection->cmd_ctx, gdb_output, connection);
688 /* we must remove all breakpoints registered to the target as a previous
689 * GDB session could leave dangling breakpoints if e.g. communication
692 breakpoint_clear_target(gdb_service->target);
693 watchpoint_clear_target(gdb_service->target);
695 /* register callback to be informed about target events */
696 target_register_event_callback(gdb_target_callback_event_handler, connection);
698 /* a gdb session just attached, try to put the target in halt mode.
702 * If the halt fails(e.g. target needs a reset, JTAG communication not
703 * working, etc.), then the GDB connect will succeed as
704 * the get_gdb_reg_list() will lie and return a register list with
707 * This allows GDB monitor commands to be run from a GDB init script to
708 * initialize the target
710 * Also, since the halt() is asynchronous target connect will be
711 * instantaneous and thus avoiding annoying timeout problems during
714 target_halt(gdb_service->target);
715 /* FIX!!!! could extended-remote work better here?
717 * wait a tiny bit for halted state or we just continue. The
718 * GDB register packet will then contain garbage
720 target_wait_state(gdb_service->target, TARGET_HALTED, 500);
722 /* remove the initial ACK from the incoming buffer */
723 if ((retval = gdb_get_char(connection, &initial_ack)) != ERROR_OK)
726 /* FIX!!!??? would we actually ever receive a + here???
729 if (initial_ack != '+')
730 gdb_putback_char(connection, initial_ack);
735 int gdb_connection_closed(connection_t *connection)
737 gdb_service_t *gdb_service = connection->service->priv;
738 gdb_connection_t *gdb_connection = connection->priv;
740 /* see if an image built with vFlash commands is left */
741 if (gdb_connection->vflash_image)
743 image_close(gdb_connection->vflash_image);
744 free(gdb_connection->vflash_image);
745 gdb_connection->vflash_image = NULL;
748 /* if this connection registered a debug-message receiver delete it */
749 delete_debug_msg_receiver(connection->cmd_ctx, gdb_service->target);
751 if (connection->priv)
753 free(connection->priv);
754 connection->priv = NULL;
758 LOG_ERROR("BUG: connection->priv == NULL");
761 target_unregister_event_callback(gdb_target_callback_event_handler, connection);
762 log_remove_callback(gdb_log_callback, connection);
767 void gdb_send_error(connection_t *connection, u8 the_error)
770 snprintf(err, 4, "E%2.2X", the_error );
771 gdb_put_packet(connection, err, 3);
774 int gdb_last_signal_packet(connection_t *connection, target_t *target, char* packet, int packet_size)
779 signal = gdb_last_signal(target);
781 snprintf(sig_reply, 4, "S%2.2x", signal);
782 gdb_put_packet(connection, sig_reply, 3);
787 /* Convert register to string of bits. NB! The # of bits in the
788 * register might be non-divisible by 8(a byte), in which
789 * case an entire byte is shown. */
790 void gdb_str_to_target(target_t *target, char *tstr, reg_t *reg)
797 buf_len = CEIL(reg->size, 8);
799 for (i = 0; i < buf_len; i++)
801 tstr[i*2] = DIGITS[(buf[i]>>4) & 0xf];
802 tstr[i*2+1] = DIGITS[buf[i]&0xf];
806 void gdb_target_to_str(target_t *target, char *tstr, char *str)
808 int str_len = strlen(tstr);
813 LOG_ERROR("BUG: gdb value with uneven number of characters encountered");
817 for (i = 0; i < str_len; i+=2)
819 str[str_len - i - 1] = tstr[i + 1];
820 str[str_len - i - 2] = tstr[i];
824 int gdb_get_registers_packet(connection_t *connection, target_t *target, char* packet, int packet_size)
829 int reg_packet_size = 0;
834 #ifdef _DEBUG_GDB_IO_
838 if ((retval = target->type->get_gdb_reg_list(target, ®_list, ®_list_size)) != ERROR_OK)
840 return gdb_error(connection, retval);
843 for (i = 0; i < reg_list_size; i++)
845 reg_packet_size += reg_list[i]->size;
848 reg_packet = malloc(CEIL(reg_packet_size, 8) * 2);
849 reg_packet_p = reg_packet;
851 for (i = 0; i < reg_list_size; i++)
853 gdb_str_to_target(target, reg_packet_p, reg_list[i]);
854 reg_packet_p += CEIL(reg_list[i]->size, 8) * 2;
857 #ifdef _DEBUG_GDB_IO_
860 reg_packet_p = strndup(reg_packet, CEIL(reg_packet_size, 8) * 2);
861 LOG_DEBUG("reg_packet: %s", reg_packet_p);
866 gdb_put_packet(connection, reg_packet, CEIL(reg_packet_size, 8) * 2);
874 int gdb_set_registers_packet(connection_t *connection, target_t *target, char *packet, int packet_size)
882 #ifdef _DEBUG_GDB_IO_
886 /* skip command character */
892 LOG_WARNING("GDB set_registers packet with uneven characters received, dropping connection");
893 return ERROR_SERVER_REMOTE_CLOSED;
896 if ((retval = target->type->get_gdb_reg_list(target, ®_list, ®_list_size)) != ERROR_OK)
898 return gdb_error(connection, retval);
902 for (i = 0; i < reg_list_size; i++)
906 reg_arch_type_t *arch_type;
908 /* convert from GDB-string (target-endian) to hex-string (big-endian) */
909 hex_buf = malloc(CEIL(reg_list[i]->size, 8) * 2);
910 gdb_target_to_str(target, packet_p, hex_buf);
912 /* convert hex-string to binary buffer */
913 bin_buf = malloc(CEIL(reg_list[i]->size, 8));
914 str_to_buf(hex_buf, CEIL(reg_list[i]->size, 8) * 2, bin_buf, reg_list[i]->size, 16);
916 /* get register arch_type, and call set method */
917 arch_type = register_get_arch_type(reg_list[i]->arch_type);
918 if (arch_type == NULL)
920 LOG_ERROR("BUG: encountered unregistered arch type");
923 arch_type->set(reg_list[i], bin_buf);
925 /* advance packet pointer */
926 packet_p += (CEIL(reg_list[i]->size, 8) * 2);
932 /* free reg_t *reg_list[] array allocated by get_gdb_reg_list */
935 gdb_put_packet(connection, "OK", 2);
940 int gdb_get_register_packet(connection_t *connection, target_t *target, char *packet, int packet_size)
943 int reg_num = strtoul(packet + 1, NULL, 16);
948 #ifdef _DEBUG_GDB_IO_
952 if ((retval = target->type->get_gdb_reg_list(target, ®_list, ®_list_size)) != ERROR_OK)
954 return gdb_error(connection, retval);
957 if (reg_list_size <= reg_num)
959 LOG_ERROR("gdb requested a non-existing register");
963 reg_packet = malloc(CEIL(reg_list[reg_num]->size, 8) * 2);
965 gdb_str_to_target(target, reg_packet, reg_list[reg_num]);
967 gdb_put_packet(connection, reg_packet, CEIL(reg_list[reg_num]->size, 8) * 2);
975 int gdb_set_register_packet(connection_t *connection, target_t *target, char *packet, int packet_size)
980 int reg_num = strtoul(packet + 1, &separator, 16);
984 reg_arch_type_t *arch_type;
988 if ((retval = target->type->get_gdb_reg_list(target, ®_list, ®_list_size)) != ERROR_OK)
990 return gdb_error(connection, retval);
993 if (reg_list_size < reg_num)
995 LOG_ERROR("gdb requested a non-existing register");
996 return ERROR_SERVER_REMOTE_CLOSED;
999 if (*separator != '=')
1001 LOG_ERROR("GDB 'set register packet', but no '=' following the register number");
1002 return ERROR_SERVER_REMOTE_CLOSED;
1005 /* convert from GDB-string (target-endian) to hex-string (big-endian) */
1006 hex_buf = malloc(CEIL(reg_list[reg_num]->size, 8) * 2);
1007 gdb_target_to_str(target, separator + 1, hex_buf);
1009 /* convert hex-string to binary buffer */
1010 bin_buf = malloc(CEIL(reg_list[reg_num]->size, 8));
1011 str_to_buf(hex_buf, CEIL(reg_list[reg_num]->size, 8) * 2, bin_buf, reg_list[reg_num]->size, 16);
1013 /* get register arch_type, and call set method */
1014 arch_type = register_get_arch_type(reg_list[reg_num]->arch_type);
1015 if (arch_type == NULL)
1017 LOG_ERROR("BUG: encountered unregistered arch type");
1020 arch_type->set(reg_list[reg_num], bin_buf);
1022 gdb_put_packet(connection, "OK", 2);
1031 int gdb_error(connection_t *connection, int retval)
1035 case ERROR_TARGET_DATA_ABORT:
1036 gdb_send_error(connection, EIO);
1038 case ERROR_TARGET_TRANSLATION_FAULT:
1039 gdb_send_error(connection, EFAULT);
1041 case ERROR_TARGET_UNALIGNED_ACCESS:
1042 gdb_send_error(connection, EFAULT);
1044 case ERROR_TARGET_NOT_HALTED:
1045 gdb_send_error(connection, EFAULT);
1048 /* This could be that the target reset itself. */
1049 LOG_ERROR("unexpected error %i", retval);
1050 gdb_send_error(connection, EFAULT);
1057 /* We don't have to worry about the default 2 second timeout for GDB packets,
1058 * because GDB breaks up large memory reads into smaller reads.
1060 * 8191 bytes by the looks of it. Why 8191 bytes instead of 8192?????
1062 int gdb_read_memory_packet(connection_t *connection, target_t *target, char *packet, int packet_size)
1071 int retval = ERROR_OK;
1073 /* skip command character */
1076 addr = strtoul(packet, &separator, 16);
1078 if (*separator != ',')
1080 LOG_ERROR("incomplete read memory packet received, dropping connection");
1081 return ERROR_SERVER_REMOTE_CLOSED;
1084 len = strtoul(separator+1, NULL, 16);
1086 buffer = malloc(len);
1088 LOG_DEBUG("addr: 0x%8.8x, len: 0x%8.8x", addr, len);
1090 retval = target_read_buffer(target, addr, len, buffer);
1092 if ((retval == ERROR_TARGET_DATA_ABORT) && (!gdb_report_data_abort))
1094 /* TODO : Here we have to lie and send back all zero's lest stack traces won't work.
1095 * At some point this might be fixed in GDB, in which case this code can be removed.
1097 * OpenOCD developers are acutely aware of this problem, but there is nothing
1098 * gained by involving the user in this problem that hopefully will get resolved
1101 * http://sourceware.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gdb&pr=2395
1103 * For now, the default is to fix up things to make current GDB versions work.
1104 * This can be overwritten using the gdb_report_data_abort <'enable'|'disable'> command.
1106 memset(buffer, 0, len);
1110 if (retval == ERROR_OK)
1112 hex_buffer = malloc(len * 2 + 1);
1115 for (i = 0; i < len; i++)
1118 hex_buffer[2 * i] = DIGITS[(t >> 4) & 0xf];
1119 hex_buffer[2 * i + 1] = DIGITS[t & 0xf];
1122 gdb_put_packet(connection, hex_buffer, len * 2);
1128 retval = gdb_error(connection, retval);
1136 int gdb_write_memory_packet(connection_t *connection, target_t *target, char *packet, int packet_size)
1147 /* skip command character */
1150 addr = strtoul(packet, &separator, 16);
1152 if (*separator != ',')
1154 LOG_ERROR("incomplete write memory packet received, dropping connection");
1155 return ERROR_SERVER_REMOTE_CLOSED;
1158 len = strtoul(separator+1, &separator, 16);
1160 if (*(separator++) != ':')
1162 LOG_ERROR("incomplete write memory packet received, dropping connection");
1163 return ERROR_SERVER_REMOTE_CLOSED;
1166 buffer = malloc(len);
1168 LOG_DEBUG("addr: 0x%8.8x, len: 0x%8.8x", addr, len);
1170 for (i=0; i<len; i++)
1173 sscanf(separator + 2*i, "%2x", &tmp);
1177 retval = target_write_buffer(target, addr, len, buffer);
1179 if (retval == ERROR_OK)
1181 gdb_put_packet(connection, "OK", 2);
1185 retval = gdb_error(connection, retval);
1193 int gdb_write_memory_binary_packet(connection_t *connection, target_t *target, char *packet, int packet_size)
1201 /* skip command character */
1204 addr = strtoul(packet, &separator, 16);
1206 if (*separator != ',')
1208 LOG_ERROR("incomplete write memory binary packet received, dropping connection");
1209 return ERROR_SERVER_REMOTE_CLOSED;
1212 len = strtoul(separator+1, &separator, 16);
1214 if (*(separator++) != ':')
1216 LOG_ERROR("incomplete write memory binary packet received, dropping connection");
1217 return ERROR_SERVER_REMOTE_CLOSED;
1223 LOG_DEBUG("addr: 0x%8.8x, len: 0x%8.8x", addr, len);
1225 retval = target_write_buffer(target, addr, len, (u8*)separator);
1228 if (retval == ERROR_OK)
1230 gdb_put_packet(connection, "OK", 2);
1234 if ((retval = gdb_error(connection, retval)) != ERROR_OK)
1241 int gdb_step_continue_packet(connection_t *connection, target_t *target, char *packet, int packet_size)
1245 int retval=ERROR_OK;
1249 if (packet_size > 1)
1251 packet[packet_size] = 0;
1252 address = strtoul(packet + 1, NULL, 16);
1259 if (packet[0] == 'c')
1261 LOG_DEBUG("continue");
1262 target_invoke_script(connection->cmd_ctx, target, "pre_resume");
1263 retval=target_resume(target, current, address, 0, 0); /* resume at current address, don't handle breakpoints, not debugging */
1265 else if (packet[0] == 's')
1268 retval=target->type->step(target, current, address, 0); /* step at current or address, don't handle breakpoints */
1273 int gdb_breakpoint_watchpoint_packet(connection_t *connection, target_t *target, char *packet, int packet_size)
1276 enum breakpoint_type bp_type = BKPT_SOFT /* dummy init to avoid warning */;
1277 enum watchpoint_rw wp_type;
1285 type = strtoul(packet + 1, &separator, 16);
1287 if (type == 0) /* memory breakpoint */
1288 bp_type = BKPT_SOFT;
1289 else if (type == 1) /* hardware breakpoint */
1290 bp_type = BKPT_HARD;
1291 else if (type == 2) /* write watchpoint */
1292 wp_type = WPT_WRITE;
1293 else if (type == 3) /* read watchpoint */
1295 else if (type == 4) /* access watchpoint */
1296 wp_type = WPT_ACCESS;
1298 if (gdb_breakpoint_override&&((bp_type==BKPT_SOFT)||(bp_type==BKPT_HARD)))
1300 bp_type=gdb_breakpoint_override_type;
1303 if (*separator != ',')
1305 LOG_ERROR("incomplete breakpoint/watchpoint packet received, dropping connection");
1306 return ERROR_SERVER_REMOTE_CLOSED;
1309 address = strtoul(separator+1, &separator, 16);
1311 if (*separator != ',')
1313 LOG_ERROR("incomplete breakpoint/watchpoint packet received, dropping connection");
1314 return ERROR_SERVER_REMOTE_CLOSED;
1317 size = strtoul(separator+1, &separator, 16);
1323 if (packet[0] == 'Z')
1325 if ((retval = breakpoint_add(target, address, size, bp_type)) != ERROR_OK)
1327 if ((retval = gdb_error(connection, retval)) != ERROR_OK)
1332 gdb_put_packet(connection, "OK", 2);
1337 breakpoint_remove(target, address);
1338 gdb_put_packet(connection, "OK", 2);
1345 if (packet[0] == 'Z')
1347 if ((retval = watchpoint_add(target, address, size, type-2, 0, 0xffffffffu)) != ERROR_OK)
1349 if ((retval = gdb_error(connection, retval)) != ERROR_OK)
1354 gdb_put_packet(connection, "OK", 2);
1359 watchpoint_remove(target, address);
1360 gdb_put_packet(connection, "OK", 2);
1371 /* print out a string and allocate more space as needed, mainly used for XML at this point */
1372 void xml_printf(int *retval, char **xml, int *pos, int *size, const char *fmt, ...)
1374 if (*retval != ERROR_OK)
1382 if ((*xml == NULL) || (!first))
1384 /* start by 0 to exercise all the code paths.
1385 * Need minimum 2 bytes to fit 1 char and 0 terminator. */
1387 *size = *size * 2 + 2;
1389 *xml = realloc(*xml, *size);
1394 *retval = ERROR_SERVER_REMOTE_CLOSED;
1402 ret = vsnprintf(*xml + *pos, *size - *pos, fmt, ap);
1404 if ((ret > 0) && ((ret + 1) < *size - *pos))
1409 /* there was just enough or not enough space, allocate more. */
1414 static int decode_xfer_read(char *buf, char **annex, int *ofs, unsigned int *len)
1418 /* Extract and NUL-terminate the annex. */
1420 while (*buf && *buf != ':')
1426 /* After the read marker and annex, qXfer looks like a
1427 * traditional 'm' packet. */
1429 *ofs = strtoul(buf, &separator, 16);
1431 if (*separator != ',')
1434 *len = strtoul(separator+1, NULL, 16);
1439 int gdb_calc_blocksize(flash_bank_t *bank)
1442 int block_size = 0xffffffff;
1444 /* loop through all sectors and return smallest sector size */
1446 for (i = 0; i < bank->num_sectors; i++)
1448 if (bank->sectors[i].size < block_size)
1449 block_size = bank->sectors[i].size;
1455 static int compare_bank (const void * a, const void * b)
1457 flash_bank_t *b1, *b2;
1458 b1=*((flash_bank_t **)a);
1459 b2=*((flash_bank_t **)b);
1461 if (b1->base==b2->base)
1464 } else if (b1->base>b2->base)
1473 int gdb_query_packet(connection_t *connection, target_t *target, char *packet, int packet_size)
1475 command_context_t *cmd_ctx = connection->cmd_ctx;
1476 gdb_connection_t *gdb_connection = connection->priv;
1478 if (strstr(packet, "qRcmd,"))
1480 if (packet_size > 6)
1484 cmd = malloc((packet_size - 6)/2 + 1);
1485 for (i=0; i < (packet_size - 6)/2; i++)
1488 sscanf(packet + 6 + 2*i, "%2x", &tmp);
1491 cmd[(packet_size - 6)/2] = 0x0;
1493 /* We want to print all debug output to GDB connection */
1494 log_add_callback(gdb_log_callback, connection);
1495 target_call_timer_callbacks_now();
1496 command_run_line(cmd_ctx, cmd);
1497 target_call_timer_callbacks_now();
1498 log_remove_callback(gdb_log_callback, connection);
1501 gdb_put_packet(connection, "OK", 2);
1504 else if (strstr(packet, "qCRC:"))
1506 if (packet_size > 5)
1515 /* skip command character */
1518 addr = strtoul(packet, &separator, 16);
1520 if (*separator != ',')
1522 LOG_ERROR("incomplete read memory packet received, dropping connection");
1523 return ERROR_SERVER_REMOTE_CLOSED;
1526 len = strtoul(separator + 1, NULL, 16);
1528 retval = target_checksum_memory(target, addr, len, &checksum);
1530 if (retval == ERROR_OK)
1532 snprintf(gdb_reply, 10, "C%8.8x", checksum);
1533 gdb_put_packet(connection, gdb_reply, 9);
1537 if ((retval = gdb_error(connection, retval)) != ERROR_OK)
1544 else if (strstr(packet, "qSupported"))
1546 /* we currently support packet size and qXfer:memory-map:read (if enabled)
1547 * disable qXfer:features:read for the moment */
1548 int retval = ERROR_OK;
1549 char *buffer = NULL;
1553 xml_printf(&retval, &buffer, &pos, &size,
1554 "PacketSize=%x;qXfer:memory-map:read%c;qXfer:features:read-;QStartNoAckMode+",
1555 (GDB_BUFFER_SIZE - 1), ((gdb_use_memory_map == 1)&&(flash_get_bank_count()>0)) ? '+' : '-');
1557 if (retval != ERROR_OK)
1559 gdb_send_error(connection, 01);
1563 gdb_put_packet(connection, buffer, strlen(buffer));
1568 else if (strstr(packet, "qXfer:memory-map:read::")&&(flash_get_bank_count()>0))
1570 /* We get away with only specifying flash here. Regions that are not
1571 * specified are treated as if we provided no memory map(if not we
1572 * could detect the holes and mark them as RAM).
1573 * Normally we only execute this code once, but no big deal if we
1574 * have to regenerate it a couple of times. */
1580 int retval = ERROR_OK;
1587 /* skip command character */
1590 offset = strtoul(packet, &separator, 16);
1591 length = strtoul(separator + 1, &separator, 16);
1593 xml_printf(&retval, &xml, &pos, &size, "<memory-map>\n");
1596 sort banks in ascending order, we need to make non-flash memory be ram(or rather
1597 read/write) by default for GDB.
1598 GDB does not have a concept of non-cacheable read/write memory.
1600 flash_bank_t **banks=malloc(sizeof(flash_bank_t *)*flash_get_bank_count());
1603 for (i=0; i<flash_get_bank_count(); i++)
1605 p = get_flash_bank_by_num(i);
1609 retval = ERROR_FAIL;
1610 gdb_send_error(connection, retval);
1616 qsort(banks, flash_get_bank_count(), sizeof(flash_bank_t *), compare_bank);
1619 for (i=0; i<flash_get_bank_count(); i++)
1623 if (ram_start<p->base)
1625 xml_printf(&retval, &xml, &pos, &size, "<memory type=\"ram\" start=\"0x%x\" length=\"0x%x\"/>\n",
1626 ram_start, p->base-ram_start);
1629 /* if device has uneven sector sizes, eg. str7, lpc
1630 * we pass the smallest sector size to gdb memory map */
1631 blocksize = gdb_calc_blocksize(p);
1633 xml_printf(&retval, &xml, &pos, &size, "<memory type=\"flash\" start=\"0x%x\" length=\"0x%x\">\n" \
1634 "<property name=\"blocksize\">0x%x</property>\n" \
1636 p->base, p->size, blocksize);
1637 ram_start=p->base+p->size;
1641 xml_printf(&retval, &xml, &pos, &size, "<memory type=\"ram\" start=\"0x%x\" length=\"0x%x\"/>\n",
1642 ram_start, 0-ram_start);
1645 /* a flash chip could be at the very end of the 32 bit address space, in which case
1646 ram_start will be precisely 0 */
1652 xml_printf(&retval, &xml, &pos, &size, "</memory-map>\n");
1654 if (retval != ERROR_OK)
1656 gdb_send_error(connection, retval);
1660 if (offset + length > pos)
1662 length = pos - offset;
1665 char *t = malloc(length + 1);
1667 memcpy(t + 1, xml + offset, length);
1668 gdb_put_packet(connection, t, length + 1);
1674 else if (strstr(packet, "qXfer:features:read:"))
1679 int retval = ERROR_OK;
1682 unsigned int length;
1685 /* skip command character */
1688 if (decode_xfer_read(packet, &annex, &offset, &length) < 0)
1690 gdb_send_error(connection, 01);
1694 if (strcmp(annex, "target.xml") != 0)
1696 gdb_send_error(connection, 01);
1700 xml_printf(&retval, &xml, &pos, &size, \
1701 "l<target version=\"1.0\">\n<architecture>arm</architecture>\n</target>\n");
1703 if (retval != ERROR_OK)
1705 gdb_send_error(connection, retval);
1709 gdb_put_packet(connection, xml, strlen(xml));
1714 else if (strstr(packet, "QStartNoAckMode"))
1716 gdb_connection->noack_mode = 1;
1717 gdb_put_packet(connection, "OK", 2);
1721 gdb_put_packet(connection, "", 0);
1725 int gdb_v_packet(connection_t *connection, target_t *target, char *packet, int packet_size)
1727 gdb_connection_t *gdb_connection = connection->priv;
1728 gdb_service_t *gdb_service = connection->service->priv;
1731 /* if flash programming disabled - send a empty reply */
1733 if (gdb_flash_program == 0)
1735 gdb_put_packet(connection, "", 0);
1739 if (strstr(packet, "vFlashErase:"))
1742 unsigned long length;
1744 char *parse = packet + 12;
1747 LOG_ERROR("incomplete vFlashErase packet received, dropping connection");
1748 return ERROR_SERVER_REMOTE_CLOSED;
1751 addr = strtoul(parse, &parse, 16);
1753 if (*(parse++) != ',' || *parse == '\0')
1755 LOG_ERROR("incomplete vFlashErase packet received, dropping connection");
1756 return ERROR_SERVER_REMOTE_CLOSED;
1759 length = strtoul(parse, &parse, 16);
1763 LOG_ERROR("incomplete vFlashErase packet received, dropping connection");
1764 return ERROR_SERVER_REMOTE_CLOSED;
1767 /* assume all sectors need erasing - stops any problems
1768 * when flash_write is called multiple times */
1771 /* perform any target specific operations before the erase */
1772 target_call_event_callbacks(gdb_service->target, TARGET_EVENT_GDB_PROGRAM);
1775 if ((result = flash_erase_address_range(gdb_service->target, addr, length)) != ERROR_OK)
1777 /* GDB doesn't evaluate the actual error number returned,
1778 * treat a failed erase as an I/O error
1780 gdb_send_error(connection, EIO);
1781 LOG_ERROR("flash_erase returned %i", result);
1784 gdb_put_packet(connection, "OK", 2);
1789 if (strstr(packet, "vFlashWrite:"))
1792 unsigned long length;
1793 char *parse = packet + 12;
1797 LOG_ERROR("incomplete vFlashErase packet received, dropping connection");
1798 return ERROR_SERVER_REMOTE_CLOSED;
1800 addr = strtoul(parse, &parse, 16);
1801 if (*(parse++) != ':')
1803 LOG_ERROR("incomplete vFlashErase packet received, dropping connection");
1804 return ERROR_SERVER_REMOTE_CLOSED;
1806 length = packet_size - (parse - packet);
1808 /* create a new image if there isn't already one */
1809 if (gdb_connection->vflash_image == NULL)
1811 gdb_connection->vflash_image = malloc(sizeof(image_t));
1812 image_open(gdb_connection->vflash_image, "", "build");
1815 /* create new section with content from packet buffer */
1816 image_add_section(gdb_connection->vflash_image, addr, length, 0x0, (u8*)parse);
1818 gdb_put_packet(connection, "OK", 2);
1823 if (!strcmp(packet, "vFlashDone"))
1827 /* process the flashing buffer. No need to erase as GDB
1828 * always issues a vFlashErase first. */
1829 if ((result = flash_write(gdb_service->target, gdb_connection->vflash_image, &written, 0)) != ERROR_OK)
1831 if (result == ERROR_FLASH_DST_OUT_OF_BANK)
1832 gdb_put_packet(connection, "E.memtype", 9);
1834 gdb_send_error(connection, EIO);
1838 LOG_DEBUG("wrote %u bytes from vFlash image to flash", written);
1839 gdb_put_packet(connection, "OK", 2);
1842 image_close(gdb_connection->vflash_image);
1843 free(gdb_connection->vflash_image);
1844 gdb_connection->vflash_image = NULL;
1849 gdb_put_packet(connection, "", 0);
1853 int gdb_detach(connection_t *connection, target_t *target)
1855 switch( detach_mode )
1857 case GDB_DETACH_RESUME:
1858 target_invoke_script(connection->cmd_ctx, target, "pre_resume");
1859 target_resume(target, 1, 0, 1, 0);
1862 case GDB_DETACH_RESET:
1863 /* FIX?? make this configurable?? */
1864 target_process_reset(connection->cmd_ctx, RESET_HALT);
1867 case GDB_DETACH_HALT:
1868 target_halt(target);
1871 case GDB_DETACH_NOTHING:
1875 gdb_put_packet(connection, "OK", 2);
1880 static void gdb_log_callback(void *priv, const char *file, int line,
1881 const char *function, const char *string)
1883 connection_t *connection = priv;
1884 gdb_connection_t *gdb_con = connection->priv;
1888 /* do not reply this using the O packet */
1892 gdb_output_con(connection, string);
1895 /* Do not allocate this on the stack */
1896 char gdb_packet_buffer[GDB_BUFFER_SIZE];
1898 static void gdb_sig_halted(connection_t *connection)
1901 snprintf(sig_reply, 4, "T%2.2x", 2);
1902 gdb_put_packet(connection, sig_reply, 3);
1906 int gdb_input_inner(connection_t *connection)
1908 gdb_service_t *gdb_service = connection->service->priv;
1909 target_t *target = gdb_service->target;
1910 char *packet=gdb_packet_buffer;
1913 gdb_connection_t *gdb_con = connection->priv;
1914 static int extended_protocol = 0;
1916 /* drain input buffer */
1919 packet_size = GDB_BUFFER_SIZE-1;
1920 if ((retval = gdb_get_packet(connection, packet, &packet_size)) != ERROR_OK)
1925 /* terminate with zero */
1926 packet[packet_size] = 0;
1928 LOG_DEBUG("received packet: '%s'", packet);
1930 if (packet_size > 0)
1936 /* Hct... -- set thread
1937 * we don't have threads, send empty reply */
1938 gdb_put_packet(connection, NULL, 0);
1942 retval = gdb_query_packet(connection, target, packet, packet_size);
1945 retval = gdb_get_registers_packet(connection, target, packet, packet_size);
1948 retval = gdb_set_registers_packet(connection, target, packet, packet_size);
1951 retval = gdb_get_register_packet(connection, target, packet, packet_size);
1954 retval = gdb_set_register_packet(connection, target, packet, packet_size);
1957 retval = gdb_read_memory_packet(connection, target, packet, packet_size);
1960 retval = gdb_write_memory_packet(connection, target, packet, packet_size);
1964 retval = gdb_breakpoint_watchpoint_packet(connection, target, packet, packet_size);
1967 gdb_last_signal_packet(connection, target, packet, packet_size);
1972 if (target->state != TARGET_HALTED)
1974 /* If the target isn't in the halted state, then we can't
1975 * step/continue. This might be early setup, etc.
1977 gdb_sig_halted(connection);
1980 /* We're running/stepping, in which case we can
1981 * forward log output until the target is halted
1983 gdb_connection_t *gdb_con = connection->priv;
1984 gdb_con->frontend_state = TARGET_RUNNING;
1985 log_add_callback(gdb_log_callback, connection);
1986 int retval=gdb_step_continue_packet(connection, target, packet, packet_size);
1987 if (retval!=ERROR_OK)
1989 /* we'll never receive a halted condition... issue a false one.. */
1990 gdb_frontend_halted(target, connection);
1996 retval = gdb_v_packet(connection, target, packet, packet_size);
1999 retval = gdb_detach(connection, target);
2000 extended_protocol = 0;
2003 if ((retval = gdb_write_memory_binary_packet(connection, target, packet, packet_size)) != ERROR_OK)
2007 if (extended_protocol != 0)
2009 gdb_put_packet(connection, "OK", 2);
2010 return ERROR_SERVER_REMOTE_CLOSED;
2012 /* handle extended remote protocol */
2013 extended_protocol = 1;
2014 gdb_put_packet(connection, "OK", 2);
2017 /* handle extended restart packet */
2018 breakpoint_clear_target(gdb_service->target);
2019 watchpoint_clear_target(gdb_service->target);
2020 command_run_linef(connection->cmd_ctx, "ocd_gdb_restart %d", get_num_by_target(target));
2023 /* ignore unkown packets */
2024 LOG_DEBUG("ignoring 0x%2.2x packet", packet[0]);
2025 gdb_put_packet(connection, NULL, 0);
2029 /* if a packet handler returned an error, exit input loop */
2030 if (retval != ERROR_OK)
2034 if (gdb_con->ctrl_c)
2036 if (target->state == TARGET_RUNNING)
2038 target_halt(target);
2039 gdb_con->ctrl_c = 0;
2043 } while (gdb_con->buf_cnt > 0);
2048 int gdb_input(connection_t *connection)
2050 int retval = gdb_input_inner(connection);
2051 gdb_connection_t *gdb_con = connection->priv;
2052 if (retval == ERROR_SERVER_REMOTE_CLOSED)
2055 /* logging does not propagate the error, yet can set th gdb_con->closed flag */
2056 if (gdb_con->closed)
2057 return ERROR_SERVER_REMOTE_CLOSED;
2059 /* we'll recover from any other errors(e.g. temporary timeouts, etc.) */
2065 gdb_service_t *gdb_service;
2066 target_t *target = targets;
2071 LOG_WARNING("no gdb ports allocated as no target has been specified");
2077 LOG_WARNING("no gdb port specified, using default port 3333");
2083 char service_name[8];
2085 snprintf(service_name, 8, "gdb-%2.2i", i);
2087 gdb_service = malloc(sizeof(gdb_service_t));
2088 gdb_service->target = target;
2090 add_service("gdb", CONNECTION_GDB, gdb_port + i, 1, gdb_new_connection, gdb_input, gdb_connection_closed, gdb_service);
2092 LOG_DEBUG("gdb service for target %s at port %i", target->type->name, gdb_port + i);
2095 target = target->next;
2101 /* daemon configuration command gdb_port */
2102 int handle_gdb_port_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2107 /* only if the port wasn't overwritten by cmdline */
2109 gdb_port = strtoul(args[0], NULL, 0);
2114 int handle_gdb_detach_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2118 if (strcmp(args[0], "resume") == 0)
2120 detach_mode = GDB_DETACH_RESUME;
2123 else if (strcmp(args[0], "reset") == 0)
2125 detach_mode = GDB_DETACH_RESET;
2128 else if (strcmp(args[0], "halt") == 0)
2130 detach_mode = GDB_DETACH_HALT;
2133 else if (strcmp(args[0], "nothing") == 0)
2135 detach_mode = GDB_DETACH_NOTHING;
2140 LOG_WARNING("invalid gdb_detach configuration directive: %s", args[0]);
2144 int handle_gdb_memory_map_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2148 if (strcmp(args[0], "enable") == 0)
2150 gdb_use_memory_map = 1;
2153 else if (strcmp(args[0], "disable") == 0)
2155 gdb_use_memory_map = 0;
2160 LOG_WARNING("invalid gdb_memory_map configuration directive: %s", args[0]);
2164 int handle_gdb_flash_program_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2168 if (strcmp(args[0], "enable") == 0)
2170 gdb_flash_program = 1;
2173 else if (strcmp(args[0], "disable") == 0)
2175 gdb_flash_program = 0;
2180 LOG_WARNING("invalid gdb_memory_map configuration directive: %s", args[0]);
2184 int handle_gdb_report_data_abort_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2188 if (strcmp(args[0], "enable") == 0)
2190 gdb_report_data_abort = 1;
2193 else if (strcmp(args[0], "disable") == 0)
2195 gdb_report_data_abort = 0;
2200 LOG_WARNING("invalid gdb_report_data_abort configuration directive: %s", args[0]);
2204 /* daemon configuration command gdb_port */
2205 int handle_gdb_breakpoint_override_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2212 gdb_breakpoint_override = 1;
2213 if (strcmp(args[0], "hard")==0)
2215 gdb_breakpoint_override_type=BKPT_HARD;
2216 } else if (strcmp(args[0], "soft")==0)
2218 gdb_breakpoint_override_type=BKPT_SOFT;
2219 } else if (strcmp(args[0], "disable") == 0)
2221 gdb_breakpoint_override = 0;
2225 return ERROR_COMMAND_SYNTAX_ERROR;
2227 if (gdb_breakpoint_override)
2229 LOG_USER("force %s breakpoints", (gdb_breakpoint_override_type==BKPT_HARD)?"hard":"soft");
2232 LOG_USER("breakpoint type is not overriden");
2239 int gdb_register_commands(command_context_t *command_context)
2241 register_command(command_context, NULL, "gdb_port", handle_gdb_port_command,
2242 COMMAND_CONFIG, "");
2243 register_command(command_context, NULL, "gdb_detach", handle_gdb_detach_command,
2244 COMMAND_CONFIG, "");
2245 register_command(command_context, NULL, "gdb_memory_map", handle_gdb_memory_map_command,
2246 COMMAND_CONFIG, "");
2247 register_command(command_context, NULL, "gdb_flash_program", handle_gdb_flash_program_command,
2248 COMMAND_CONFIG, "");
2249 register_command(command_context, NULL, "gdb_report_data_abort", handle_gdb_report_data_abort_command,
2250 COMMAND_CONFIG, "");
2251 register_command(command_context, NULL, "gdb_breakpoint_override", handle_gdb_breakpoint_override_command,
2252 COMMAND_EXEC, "hard/soft/disabled - force breakpoint type for gdb 'break' commands."
2253 "The raison d'etre for this option is to support GDB GUI's without "
2254 "a hard/soft breakpoint concept where the default OpenOCD behaviour "
2255 "is not sufficient");