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 * Copyright (C) 2008 by Spencer Oliver *
9 * spen@spen-soft.co.uk *
11 * This program is free software; you can redistribute it and/or modify *
12 * it under the terms of the GNU General Public License as published by *
13 * the Free Software Foundation; either version 2 of the License, or *
14 * (at your option) any later version. *
16 * This program is distributed in the hope that it will be useful, *
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
19 * GNU General Public License for more details. *
21 * You should have received a copy of the GNU General Public License *
22 * along with this program; if not, write to the *
23 * Free Software Foundation, Inc., *
24 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
25 ***************************************************************************/
30 #include "replacements.h"
32 #include "gdb_server.h"
36 #include "binarybuffer.h"
38 #include "breakpoints.h"
40 #include "target_request.h"
41 #include "configuration.h"
49 #define _DEBUG_GDB_IO_
52 static int gdb_breakpoint_override;
53 static enum breakpoint_type gdb_breakpoint_override_type;
55 extern int gdb_error(connection_t *connection, int retval);
56 static unsigned short gdb_port;
57 static const char *DIGITS = "0123456789abcdef";
59 static void gdb_log_callback(void *priv, const char *file, int line,
60 const char *function, const char *string);
70 /* target behaviour on gdb detach */
71 enum gdb_detach_mode detach_mode = GDB_DETACH_RESUME;
73 /* set if we are sending a memory map to gdb
74 * via qXfer:memory-map:read packet */
75 /* enabled by default*/
76 int gdb_use_memory_map = 1;
77 /* enabled by default*/
78 int gdb_flash_program = 1;
80 /* if set, data aborts cause an error to be reported in memory read packets
81 * see the code in gdb_read_memory_packet() for further explanations */
82 int gdb_report_data_abort = 0;
84 int gdb_last_signal(target_t *target)
86 switch (target->debug_reason)
88 case DBG_REASON_DBGRQ:
89 return 0x2; /* SIGINT */
90 case DBG_REASON_BREAKPOINT:
91 case DBG_REASON_WATCHPOINT:
92 case DBG_REASON_WPTANDBKPT:
93 return 0x05; /* SIGTRAP */
94 case DBG_REASON_SINGLESTEP:
95 return 0x05; /* SIGTRAP */
96 case DBG_REASON_NOTHALTED:
97 return 0x0; /* no signal... shouldn't happen */
99 LOG_USER("undefined debug reason %d - target needs reset", target->debug_reason);
104 int check_pending(connection_t *connection, int timeout_s, int *got_data)
106 /* a non-blocking socket will block if there is 0 bytes available on the socket,
107 * but return with as many bytes as are available immediately
111 gdb_connection_t *gdb_con = connection->priv;
117 if (gdb_con->buf_cnt>0)
124 FD_SET(connection->fd, &read_fds);
126 tv.tv_sec = timeout_s;
128 if (select(connection->fd + 1, &read_fds, NULL, NULL, &tv) == 0)
130 /* This can typically be because a "monitor" command took too long
131 * before printing any progress messages
135 return ERROR_GDB_TIMEOUT;
141 *got_data=FD_ISSET(connection->fd, &read_fds)!=0;
145 int gdb_get_char(connection_t *connection, int* next_char)
147 gdb_connection_t *gdb_con = connection->priv;
150 #ifdef _DEBUG_GDB_IO_
154 if (gdb_con->buf_cnt-- > 0)
156 *next_char = *(gdb_con->buf_p++);
157 if (gdb_con->buf_cnt > 0)
158 connection->input_pending = 1;
160 connection->input_pending = 0;
162 #ifdef _DEBUG_GDB_IO_
163 LOG_DEBUG("returned char '%c' (0x%2.2x)", *next_char, *next_char);
171 retval=check_pending(connection, 1, NULL);
172 if (retval!=ERROR_OK)
174 gdb_con->buf_cnt = read_socket(connection->fd, gdb_con->buffer, GDB_BUFFER_SIZE);
175 if (gdb_con->buf_cnt > 0)
179 if (gdb_con->buf_cnt == 0)
182 return ERROR_SERVER_REMOTE_CLOSED;
186 errno = WSAGetLastError();
193 case WSAECONNABORTED:
195 return ERROR_SERVER_REMOTE_CLOSED;
198 return ERROR_SERVER_REMOTE_CLOSED;
200 LOG_ERROR("read: %d", errno);
211 return ERROR_SERVER_REMOTE_CLOSED;
214 return ERROR_SERVER_REMOTE_CLOSED;
216 LOG_ERROR("read: %s", strerror(errno));
218 return ERROR_SERVER_REMOTE_CLOSED;
223 #ifdef _DEBUG_GDB_IO_
224 debug_buffer = malloc(gdb_con->buf_cnt + 1);
225 memcpy(debug_buffer, gdb_con->buffer, gdb_con->buf_cnt);
226 debug_buffer[gdb_con->buf_cnt] = 0;
227 LOG_DEBUG("received '%s'", debug_buffer);
231 gdb_con->buf_p = gdb_con->buffer;
233 *next_char = *(gdb_con->buf_p++);
234 if (gdb_con->buf_cnt > 0)
235 connection->input_pending = 1;
237 connection->input_pending = 0;
238 #ifdef _DEBUG_GDB_IO_
239 LOG_DEBUG("returned char '%c' (0x%2.2x)", *next_char, *next_char);
245 int gdb_putback_char(connection_t *connection, int last_char)
247 gdb_connection_t *gdb_con = connection->priv;
249 if (gdb_con->buf_p > gdb_con->buffer)
251 *(--gdb_con->buf_p) = last_char;
256 LOG_ERROR("BUG: couldn't put character back");
262 /* The only way we can detect that the socket is closed is the first time
263 * we write to it, we will fail. Subsequent write operations will
264 * succeed. Shudder! */
265 int gdb_write(connection_t *connection, void *data, int len)
267 gdb_connection_t *gdb_con = connection->priv;
269 return ERROR_SERVER_REMOTE_CLOSED;
271 if (write_socket(connection->fd, data, len) == len)
276 return ERROR_SERVER_REMOTE_CLOSED;
279 int gdb_put_packet_inner(connection_t *connection, char *buffer, int len)
282 unsigned char my_checksum = 0;
283 #ifdef _DEBUG_GDB_IO_
288 gdb_connection_t *gdb_con = connection->priv;
290 for (i = 0; i < len; i++)
291 my_checksum += buffer[i];
293 #ifdef _DEBUG_GDB_IO_
295 * At this point we should have nothing in the input queue from GDB,
296 * however sometimes '-' is sent even though we've already received
297 * an ACK (+) for everything we've sent off.
302 if ((retval=check_pending(connection, 0, &gotdata))!=ERROR_OK)
306 if ((retval = gdb_get_char(connection, &reply)) != ERROR_OK)
308 LOG_WARNING("Discard unexpected char %c", reply);
314 #ifdef _DEBUG_GDB_IO_
315 debug_buffer = malloc(len + 1);
316 memcpy(debug_buffer, buffer, len);
317 debug_buffer[len] = 0;
318 LOG_DEBUG("sending packet '$%s#%2.2x'", debug_buffer, my_checksum);
322 char local_buffer[1024];
323 local_buffer[0] = '$';
324 if (len+4 <= sizeof(local_buffer))
326 /* performance gain on smaller packets by only a single call to gdb_write() */
327 memcpy(local_buffer+1, buffer, len++);
328 local_buffer[len++] = '#';
329 local_buffer[len++] = DIGITS[(my_checksum >> 4) & 0xf];
330 local_buffer[len++] = DIGITS[my_checksum & 0xf];
331 gdb_write(connection, local_buffer, len);
335 /* larger packets are transmitted directly from caller supplied buffer
336 by several calls to gdb_write() to avoid dynamic allocation */
337 local_buffer[1] = '#';
338 local_buffer[2] = DIGITS[(my_checksum >> 4) & 0xf];
339 local_buffer[3] = DIGITS[my_checksum & 0xf];
340 gdb_write(connection, local_buffer, 1);
341 gdb_write(connection, buffer, len);
342 gdb_write(connection, local_buffer+1, 3);
345 if (gdb_con->noack_mode)
348 if ((retval = gdb_get_char(connection, &reply)) != ERROR_OK)
353 else if (reply == '-')
355 /* Stop sending output packets for now */
356 log_remove_callback(gdb_log_callback, connection);
357 LOG_WARNING("negative reply, retrying");
359 else if (reply == 0x3)
362 if ((retval = gdb_get_char(connection, &reply)) != ERROR_OK)
366 else if (reply == '-')
368 /* Stop sending output packets for now */
369 log_remove_callback(gdb_log_callback, connection);
370 LOG_WARNING("negative reply, retrying");
374 LOG_ERROR("unknown character 0x%2.2x in reply, dropping connection", reply);
376 return ERROR_SERVER_REMOTE_CLOSED;
381 LOG_ERROR("unknown character 0x%2.2x in reply, dropping connection", reply);
383 return ERROR_SERVER_REMOTE_CLOSED;
387 return ERROR_SERVER_REMOTE_CLOSED;
392 int gdb_put_packet(connection_t *connection, char *buffer, int len)
394 gdb_connection_t *gdb_con = connection->priv;
396 int retval = gdb_put_packet_inner(connection, buffer, len);
399 /* we sent some data, reset timer for keep alive messages */
405 static __inline__ int fetch_packet(connection_t *connection, int *checksum_ok, int noack, int *len, char *buffer)
407 unsigned char my_checksum = 0;
412 gdb_connection_t *gdb_con = connection->priv;
418 /* The common case is that we have an entire packet with no escape chars.
419 * We need to leave at least 2 bytes in the buffer to have
420 * gdb_get_char() update various bits and bobs correctly.
422 if ((gdb_con->buf_cnt > 2) && ((gdb_con->buf_cnt+count) < *len))
424 /* The compiler will struggle a bit with constant propagation and
425 * aliasing, so we help it by showing that these values do not
426 * change inside the loop
429 char *buf = gdb_con->buf_p;
430 int run = gdb_con->buf_cnt - 2;
437 if (character == '#')
439 /* Danger! character can be '#' when esc is
440 * used so we need an explicit boolean for done here.
446 if (character == '}')
448 /* data transmitted in binary mode (X packet)
449 * uses 0x7d as escape character */
450 my_checksum += character & 0xff;
453 my_checksum += character & 0xff;
454 buffer[count++] = (character ^ 0x20) & 0xff;
458 my_checksum += character & 0xff;
459 buffer[count++] = character & 0xff;
463 gdb_con->buf_cnt -= i;
469 LOG_ERROR("packet buffer too small");
470 return ERROR_GDB_BUFFER_TOO_SMALL;
473 if ((retval = gdb_get_char(connection, &character)) != ERROR_OK)
476 if (character == '#')
479 if (character == '}')
481 /* data transmitted in binary mode (X packet)
482 * uses 0x7d as escape character */
483 my_checksum += character & 0xff;
484 if ((retval = gdb_get_char(connection, &character)) != ERROR_OK)
486 my_checksum += character & 0xff;
487 buffer[count++] = (character ^ 0x20) & 0xff;
491 my_checksum += character & 0xff;
492 buffer[count++] = character & 0xff;
498 if ((retval = gdb_get_char(connection, &character)) != ERROR_OK)
500 checksum[0] = character;
501 if ((retval = gdb_get_char(connection, &character)) != ERROR_OK)
503 checksum[1] = character;
508 *checksum_ok=(my_checksum == strtoul(checksum, NULL, 16));
514 int gdb_get_packet_inner(connection_t *connection, char *buffer, int *len)
518 gdb_connection_t *gdb_con = connection->priv;
524 if ((retval = gdb_get_char(connection, &character)) != ERROR_OK)
527 #ifdef _DEBUG_GDB_IO_
528 LOG_DEBUG("character: '%c'", character);
536 /* gdb sends a dummy ack '+' at every remote connect - see remote_start_remote (remote.c)
537 * incase anyone tries to debug why they receive this warning every time */
538 LOG_WARNING("acknowledgment received, but no packet pending");
541 LOG_WARNING("negative acknowledgment, but no packet pending");
548 LOG_WARNING("ignoring character 0x%x", character);
551 } while (character != '$');
556 /* explicit code expansion here to get faster inlined code in -O3 by not
557 * calculating checksum
559 if (gdb_con->noack_mode)
561 if ((retval=fetch_packet(connection, &checksum_ok, 1, len, buffer))!=ERROR_OK)
565 if ((retval=fetch_packet(connection, &checksum_ok, 0, len, buffer))!=ERROR_OK)
569 if (gdb_con->noack_mode)
571 /* checksum is not checked in noack mode */
576 gdb_write(connection, "+", 1);
581 return ERROR_SERVER_REMOTE_CLOSED;
586 int gdb_get_packet(connection_t *connection, char *buffer, int *len)
588 gdb_connection_t *gdb_con = connection->priv;
590 int retval = gdb_get_packet_inner(connection, buffer, len);
595 int gdb_output_con(connection_t *connection, const char* line)
600 bin_size = strlen(line);
602 hex_buffer = malloc(bin_size*2 + 2);
603 if (hex_buffer == NULL)
604 return ERROR_GDB_BUFFER_TOO_SMALL;
607 for (i=0; i<bin_size; i++)
608 snprintf(hex_buffer + 1 + i*2, 3, "%2.2x", line[i]);
609 hex_buffer[bin_size*2+1] = 0;
611 gdb_put_packet(connection, hex_buffer, bin_size*2 + 1);
617 int gdb_output(struct command_context_s *context, const char* line)
619 /* this will be dumped to the log and also sent as an O packet if possible */
620 LOG_USER_N("%s", line);
625 static void gdb_frontend_halted(struct target_s *target, connection_t *connection)
627 gdb_connection_t *gdb_connection = connection->priv;
629 /* In the GDB protocol when we are stepping or coninuing execution,
630 * we have a lingering reply. Upon receiving a halted event
631 * when we have that lingering packet, we reply to the original
632 * step or continue packet.
634 * Executing monitor commands can bring the target in and
635 * out of the running state so we'll see lots of TARGET_EVENT_XXX
636 * that are to be ignored.
638 if (gdb_connection->frontend_state == TARGET_RUNNING)
642 /* stop forwarding log packets! */
643 log_remove_callback(gdb_log_callback, connection);
645 if (gdb_connection->ctrl_c)
648 gdb_connection->ctrl_c = 0;
652 signal = gdb_last_signal(target);
655 snprintf(sig_reply, 4, "T%2.2x", signal);
656 gdb_put_packet(connection, sig_reply, 3);
657 gdb_connection->frontend_state = TARGET_HALTED;
661 int gdb_target_callback_event_handler(struct target_s *target, enum target_event event, void *priv)
663 connection_t *connection = priv;
665 target_handle_event( target, event );
668 case TARGET_EVENT_HALTED:
669 gdb_frontend_halted(target, connection);
671 case TARGET_EVENT_GDB_FLASH_ERASE_START:
672 target_handle_event( target, TARGET_EVENT_OLD_gdb_program_config );
673 jtag_execute_queue();
683 int gdb_new_connection(connection_t *connection)
685 gdb_connection_t *gdb_connection = malloc(sizeof(gdb_connection_t));
686 gdb_service_t *gdb_service = connection->service->priv;
690 connection->priv = gdb_connection;
692 /* initialize gdb connection information */
693 gdb_connection->buf_p = gdb_connection->buffer;
694 gdb_connection->buf_cnt = 0;
695 gdb_connection->ctrl_c = 0;
696 gdb_connection->frontend_state = TARGET_HALTED;
697 gdb_connection->vflash_image = NULL;
698 gdb_connection->closed = 0;
699 gdb_connection->busy = 0;
700 gdb_connection->noack_mode = 0;
702 /* send ACK to GDB for debug request */
703 gdb_write(connection, "+", 1);
705 /* output goes through gdb connection */
706 command_set_output_handler(connection->cmd_ctx, gdb_output, connection);
708 /* we must remove all breakpoints registered to the target as a previous
709 * GDB session could leave dangling breakpoints if e.g. communication
712 breakpoint_clear_target(gdb_service->target);
713 watchpoint_clear_target(gdb_service->target);
715 /* register callback to be informed about target events */
716 target_register_event_callback(gdb_target_callback_event_handler, connection);
718 /* a gdb session just attached, try to put the target in halt mode.
722 * If the halt fails(e.g. target needs a reset, JTAG communication not
723 * working, etc.), then the GDB connect will succeed as
724 * the get_gdb_reg_list() will lie and return a register list with
727 * This allows GDB monitor commands to be run from a GDB init script to
728 * initialize the target
730 * Also, since the halt() is asynchronous target connect will be
731 * instantaneous and thus avoiding annoying timeout problems during
734 target_halt(gdb_service->target);
735 /* FIX!!!! could extended-remote work better here?
737 * wait a tiny bit for halted state or we just continue. The
738 * GDB register packet will then contain garbage
740 target_wait_state(gdb_service->target, TARGET_HALTED, 500);
742 /* remove the initial ACK from the incoming buffer */
743 if ((retval = gdb_get_char(connection, &initial_ack)) != ERROR_OK)
746 /* FIX!!!??? would we actually ever receive a + here???
749 if (initial_ack != '+')
750 gdb_putback_char(connection, initial_ack);
751 target_call_event_callbacks(gdb_service->target, TARGET_EVENT_GDB_ATTACH );
755 int gdb_connection_closed(connection_t *connection)
757 gdb_service_t *gdb_service = connection->service->priv;
758 gdb_connection_t *gdb_connection = connection->priv;
760 /* see if an image built with vFlash commands is left */
761 if (gdb_connection->vflash_image)
763 image_close(gdb_connection->vflash_image);
764 free(gdb_connection->vflash_image);
765 gdb_connection->vflash_image = NULL;
768 /* if this connection registered a debug-message receiver delete it */
769 delete_debug_msg_receiver(connection->cmd_ctx, gdb_service->target);
771 if (connection->priv)
773 free(connection->priv);
774 connection->priv = NULL;
778 LOG_ERROR("BUG: connection->priv == NULL");
781 target_unregister_event_callback(gdb_target_callback_event_handler, connection);
782 log_remove_callback(gdb_log_callback, connection);
784 target_call_event_callbacks(gdb_service->target, TARGET_EVENT_GDB_DETACH );
788 void gdb_send_error(connection_t *connection, u8 the_error)
791 snprintf(err, 4, "E%2.2X", the_error );
792 gdb_put_packet(connection, err, 3);
795 int gdb_last_signal_packet(connection_t *connection, target_t *target, char* packet, int packet_size)
800 signal = gdb_last_signal(target);
802 snprintf(sig_reply, 4, "S%2.2x", signal);
803 gdb_put_packet(connection, sig_reply, 3);
808 /* Convert register to string of bits. NB! The # of bits in the
809 * register might be non-divisible by 8(a byte), in which
810 * case an entire byte is shown. */
811 void gdb_str_to_target(target_t *target, char *tstr, reg_t *reg)
818 buf_len = CEIL(reg->size, 8);
820 for (i = 0; i < buf_len; i++)
822 tstr[i*2] = DIGITS[(buf[i]>>4) & 0xf];
823 tstr[i*2+1] = DIGITS[buf[i]&0xf];
827 void gdb_target_to_str(target_t *target, char *tstr, char *str)
829 int str_len = strlen(tstr);
834 LOG_ERROR("BUG: gdb value with uneven number of characters encountered");
838 for (i = 0; i < str_len; i+=2)
840 str[str_len - i - 1] = tstr[i + 1];
841 str[str_len - i - 2] = tstr[i];
845 int gdb_get_registers_packet(connection_t *connection, target_t *target, char* packet, int packet_size)
850 int reg_packet_size = 0;
855 #ifdef _DEBUG_GDB_IO_
859 if ((retval = target->type->get_gdb_reg_list(target, ®_list, ®_list_size)) != ERROR_OK)
861 return gdb_error(connection, retval);
864 for (i = 0; i < reg_list_size; i++)
866 reg_packet_size += reg_list[i]->size;
869 reg_packet = malloc(CEIL(reg_packet_size, 8) * 2);
870 reg_packet_p = reg_packet;
872 for (i = 0; i < reg_list_size; i++)
874 gdb_str_to_target(target, reg_packet_p, reg_list[i]);
875 reg_packet_p += CEIL(reg_list[i]->size, 8) * 2;
878 #ifdef _DEBUG_GDB_IO_
881 reg_packet_p = strndup(reg_packet, CEIL(reg_packet_size, 8) * 2);
882 LOG_DEBUG("reg_packet: %s", reg_packet_p);
887 gdb_put_packet(connection, reg_packet, CEIL(reg_packet_size, 8) * 2);
895 int gdb_set_registers_packet(connection_t *connection, target_t *target, char *packet, int packet_size)
903 #ifdef _DEBUG_GDB_IO_
907 /* skip command character */
913 LOG_WARNING("GDB set_registers packet with uneven characters received, dropping connection");
914 return ERROR_SERVER_REMOTE_CLOSED;
917 if ((retval = target->type->get_gdb_reg_list(target, ®_list, ®_list_size)) != ERROR_OK)
919 return gdb_error(connection, retval);
923 for (i = 0; i < reg_list_size; i++)
927 reg_arch_type_t *arch_type;
929 /* convert from GDB-string (target-endian) to hex-string (big-endian) */
930 hex_buf = malloc(CEIL(reg_list[i]->size, 8) * 2);
931 gdb_target_to_str(target, packet_p, hex_buf);
933 /* convert hex-string to binary buffer */
934 bin_buf = malloc(CEIL(reg_list[i]->size, 8));
935 str_to_buf(hex_buf, CEIL(reg_list[i]->size, 8) * 2, bin_buf, reg_list[i]->size, 16);
937 /* get register arch_type, and call set method */
938 arch_type = register_get_arch_type(reg_list[i]->arch_type);
939 if (arch_type == NULL)
941 LOG_ERROR("BUG: encountered unregistered arch type");
944 arch_type->set(reg_list[i], bin_buf);
946 /* advance packet pointer */
947 packet_p += (CEIL(reg_list[i]->size, 8) * 2);
953 /* free reg_t *reg_list[] array allocated by get_gdb_reg_list */
956 gdb_put_packet(connection, "OK", 2);
961 int gdb_get_register_packet(connection_t *connection, target_t *target, char *packet, int packet_size)
964 int reg_num = strtoul(packet + 1, NULL, 16);
969 #ifdef _DEBUG_GDB_IO_
973 if ((retval = target->type->get_gdb_reg_list(target, ®_list, ®_list_size)) != ERROR_OK)
975 return gdb_error(connection, retval);
978 if (reg_list_size <= reg_num)
980 LOG_ERROR("gdb requested a non-existing register");
984 reg_packet = malloc(CEIL(reg_list[reg_num]->size, 8) * 2);
986 gdb_str_to_target(target, reg_packet, reg_list[reg_num]);
988 gdb_put_packet(connection, reg_packet, CEIL(reg_list[reg_num]->size, 8) * 2);
996 int gdb_set_register_packet(connection_t *connection, target_t *target, char *packet, int packet_size)
1001 int reg_num = strtoul(packet + 1, &separator, 16);
1005 reg_arch_type_t *arch_type;
1009 if ((retval = target->type->get_gdb_reg_list(target, ®_list, ®_list_size)) != ERROR_OK)
1011 return gdb_error(connection, retval);
1014 if (reg_list_size < reg_num)
1016 LOG_ERROR("gdb requested a non-existing register");
1017 return ERROR_SERVER_REMOTE_CLOSED;
1020 if (*separator != '=')
1022 LOG_ERROR("GDB 'set register packet', but no '=' following the register number");
1023 return ERROR_SERVER_REMOTE_CLOSED;
1026 /* convert from GDB-string (target-endian) to hex-string (big-endian) */
1027 hex_buf = malloc(CEIL(reg_list[reg_num]->size, 8) * 2);
1028 gdb_target_to_str(target, separator + 1, hex_buf);
1030 /* convert hex-string to binary buffer */
1031 bin_buf = malloc(CEIL(reg_list[reg_num]->size, 8));
1032 str_to_buf(hex_buf, CEIL(reg_list[reg_num]->size, 8) * 2, bin_buf, reg_list[reg_num]->size, 16);
1034 /* get register arch_type, and call set method */
1035 arch_type = register_get_arch_type(reg_list[reg_num]->arch_type);
1036 if (arch_type == NULL)
1038 LOG_ERROR("BUG: encountered unregistered arch type");
1041 arch_type->set(reg_list[reg_num], bin_buf);
1043 gdb_put_packet(connection, "OK", 2);
1052 int gdb_error(connection_t *connection, int retval)
1056 case ERROR_TARGET_DATA_ABORT:
1057 gdb_send_error(connection, EIO);
1059 case ERROR_TARGET_TRANSLATION_FAULT:
1060 gdb_send_error(connection, EFAULT);
1062 case ERROR_TARGET_UNALIGNED_ACCESS:
1063 gdb_send_error(connection, EFAULT);
1065 case ERROR_TARGET_NOT_HALTED:
1066 gdb_send_error(connection, EFAULT);
1069 /* This could be that the target reset itself. */
1070 LOG_ERROR("unexpected error %i", retval);
1071 gdb_send_error(connection, EFAULT);
1078 /* We don't have to worry about the default 2 second timeout for GDB packets,
1079 * because GDB breaks up large memory reads into smaller reads.
1081 * 8191 bytes by the looks of it. Why 8191 bytes instead of 8192?????
1083 int gdb_read_memory_packet(connection_t *connection, target_t *target, char *packet, int packet_size)
1092 int retval = ERROR_OK;
1094 /* skip command character */
1097 addr = strtoul(packet, &separator, 16);
1099 if (*separator != ',')
1101 LOG_ERROR("incomplete read memory packet received, dropping connection");
1102 return ERROR_SERVER_REMOTE_CLOSED;
1105 len = strtoul(separator+1, NULL, 16);
1107 buffer = malloc(len);
1109 LOG_DEBUG("addr: 0x%8.8x, len: 0x%8.8x", addr, len);
1111 retval = target_read_buffer(target, addr, len, buffer);
1113 if ((retval == ERROR_TARGET_DATA_ABORT) && (!gdb_report_data_abort))
1115 /* TODO : Here we have to lie and send back all zero's lest stack traces won't work.
1116 * At some point this might be fixed in GDB, in which case this code can be removed.
1118 * OpenOCD developers are acutely aware of this problem, but there is nothing
1119 * gained by involving the user in this problem that hopefully will get resolved
1122 * http://sourceware.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gdb&pr=2395
1124 * For now, the default is to fix up things to make current GDB versions work.
1125 * This can be overwritten using the gdb_report_data_abort <'enable'|'disable'> command.
1127 memset(buffer, 0, len);
1131 if (retval == ERROR_OK)
1133 hex_buffer = malloc(len * 2 + 1);
1136 for (i = 0; i < len; i++)
1139 hex_buffer[2 * i] = DIGITS[(t >> 4) & 0xf];
1140 hex_buffer[2 * i + 1] = DIGITS[t & 0xf];
1143 gdb_put_packet(connection, hex_buffer, len * 2);
1149 retval = gdb_error(connection, retval);
1157 int gdb_write_memory_packet(connection_t *connection, target_t *target, char *packet, int packet_size)
1168 /* skip command character */
1171 addr = strtoul(packet, &separator, 16);
1173 if (*separator != ',')
1175 LOG_ERROR("incomplete write memory packet received, dropping connection");
1176 return ERROR_SERVER_REMOTE_CLOSED;
1179 len = strtoul(separator+1, &separator, 16);
1181 if (*(separator++) != ':')
1183 LOG_ERROR("incomplete write memory packet received, dropping connection");
1184 return ERROR_SERVER_REMOTE_CLOSED;
1187 buffer = malloc(len);
1189 LOG_DEBUG("addr: 0x%8.8x, len: 0x%8.8x", addr, len);
1191 for (i=0; i<len; i++)
1194 sscanf(separator + 2*i, "%2x", &tmp);
1198 retval = target_write_buffer(target, addr, len, buffer);
1200 if (retval == ERROR_OK)
1202 gdb_put_packet(connection, "OK", 2);
1206 retval = gdb_error(connection, retval);
1214 int gdb_write_memory_binary_packet(connection_t *connection, target_t *target, char *packet, int packet_size)
1222 /* skip command character */
1225 addr = strtoul(packet, &separator, 16);
1227 if (*separator != ',')
1229 LOG_ERROR("incomplete write memory binary packet received, dropping connection");
1230 return ERROR_SERVER_REMOTE_CLOSED;
1233 len = strtoul(separator+1, &separator, 16);
1235 if (*(separator++) != ':')
1237 LOG_ERROR("incomplete write memory binary packet received, dropping connection");
1238 return ERROR_SERVER_REMOTE_CLOSED;
1244 LOG_DEBUG("addr: 0x%8.8x, len: 0x%8.8x", addr, len);
1246 retval = target_write_buffer(target, addr, len, (u8*)separator);
1249 if (retval == ERROR_OK)
1251 gdb_put_packet(connection, "OK", 2);
1255 if ((retval = gdb_error(connection, retval)) != ERROR_OK)
1262 int gdb_step_continue_packet(connection_t *connection, target_t *target, char *packet, int packet_size)
1266 int retval=ERROR_OK;
1270 if (packet_size > 1)
1272 packet[packet_size] = 0;
1273 address = strtoul(packet + 1, NULL, 16);
1280 if (packet[0] == 'c')
1282 LOG_DEBUG("continue");
1283 target_handle_event( target, TARGET_EVENT_OLD_pre_resume );
1284 retval=target_resume(target, current, address, 0, 0); /* resume at current address, don't handle breakpoints, not debugging */
1286 else if (packet[0] == 's')
1289 retval=target->type->step(target, current, address, 0); /* step at current or address, don't handle breakpoints */
1294 int gdb_breakpoint_watchpoint_packet(connection_t *connection, target_t *target, char *packet, int packet_size)
1297 enum breakpoint_type bp_type = BKPT_SOFT /* dummy init to avoid warning */;
1298 enum watchpoint_rw wp_type;
1306 type = strtoul(packet + 1, &separator, 16);
1308 if (type == 0) /* memory breakpoint */
1309 bp_type = BKPT_SOFT;
1310 else if (type == 1) /* hardware breakpoint */
1311 bp_type = BKPT_HARD;
1312 else if (type == 2) /* write watchpoint */
1313 wp_type = WPT_WRITE;
1314 else if (type == 3) /* read watchpoint */
1316 else if (type == 4) /* access watchpoint */
1317 wp_type = WPT_ACCESS;
1319 if (gdb_breakpoint_override&&((bp_type==BKPT_SOFT)||(bp_type==BKPT_HARD)))
1321 bp_type=gdb_breakpoint_override_type;
1324 if (*separator != ',')
1326 LOG_ERROR("incomplete breakpoint/watchpoint packet received, dropping connection");
1327 return ERROR_SERVER_REMOTE_CLOSED;
1330 address = strtoul(separator+1, &separator, 16);
1332 if (*separator != ',')
1334 LOG_ERROR("incomplete breakpoint/watchpoint packet received, dropping connection");
1335 return ERROR_SERVER_REMOTE_CLOSED;
1338 size = strtoul(separator+1, &separator, 16);
1344 if (packet[0] == 'Z')
1346 if ((retval = breakpoint_add(target, address, size, bp_type)) != ERROR_OK)
1348 if ((retval = gdb_error(connection, retval)) != ERROR_OK)
1353 gdb_put_packet(connection, "OK", 2);
1358 breakpoint_remove(target, address);
1359 gdb_put_packet(connection, "OK", 2);
1366 if (packet[0] == 'Z')
1368 if ((retval = watchpoint_add(target, address, size, type-2, 0, 0xffffffffu)) != ERROR_OK)
1370 if ((retval = gdb_error(connection, retval)) != ERROR_OK)
1375 gdb_put_packet(connection, "OK", 2);
1380 watchpoint_remove(target, address);
1381 gdb_put_packet(connection, "OK", 2);
1392 /* print out a string and allocate more space as needed, mainly used for XML at this point */
1393 void xml_printf(int *retval, char **xml, int *pos, int *size, const char *fmt, ...)
1395 if (*retval != ERROR_OK)
1403 if ((*xml == NULL) || (!first))
1405 /* start by 0 to exercise all the code paths.
1406 * Need minimum 2 bytes to fit 1 char and 0 terminator. */
1408 *size = *size * 2 + 2;
1410 *xml = realloc(*xml, *size);
1415 *retval = ERROR_SERVER_REMOTE_CLOSED;
1423 ret = vsnprintf(*xml + *pos, *size - *pos, fmt, ap);
1425 if ((ret > 0) && ((ret + 1) < *size - *pos))
1430 /* there was just enough or not enough space, allocate more. */
1435 static int decode_xfer_read(char *buf, char **annex, int *ofs, unsigned int *len)
1439 /* Extract and NUL-terminate the annex. */
1441 while (*buf && *buf != ':')
1447 /* After the read marker and annex, qXfer looks like a
1448 * traditional 'm' packet. */
1450 *ofs = strtoul(buf, &separator, 16);
1452 if (*separator != ',')
1455 *len = strtoul(separator+1, NULL, 16);
1460 int gdb_calc_blocksize(flash_bank_t *bank)
1463 int block_size = 0xffffffff;
1465 /* loop through all sectors and return smallest sector size */
1467 for (i = 0; i < bank->num_sectors; i++)
1469 if (bank->sectors[i].size < block_size)
1470 block_size = bank->sectors[i].size;
1476 static int compare_bank (const void * a, const void * b)
1478 flash_bank_t *b1, *b2;
1479 b1=*((flash_bank_t **)a);
1480 b2=*((flash_bank_t **)b);
1482 if (b1->base==b2->base)
1485 } else if (b1->base>b2->base)
1494 int gdb_query_packet(connection_t *connection, target_t *target, char *packet, int packet_size)
1496 command_context_t *cmd_ctx = connection->cmd_ctx;
1497 gdb_connection_t *gdb_connection = connection->priv;
1499 if (strstr(packet, "qRcmd,"))
1501 if (packet_size > 6)
1505 cmd = malloc((packet_size - 6)/2 + 1);
1506 for (i=0; i < (packet_size - 6)/2; i++)
1509 sscanf(packet + 6 + 2*i, "%2x", &tmp);
1512 cmd[(packet_size - 6)/2] = 0x0;
1514 /* We want to print all debug output to GDB connection */
1515 log_add_callback(gdb_log_callback, connection);
1516 target_call_timer_callbacks_now();
1517 command_run_line(cmd_ctx, cmd);
1518 target_call_timer_callbacks_now();
1519 log_remove_callback(gdb_log_callback, connection);
1522 gdb_put_packet(connection, "OK", 2);
1525 else if (strstr(packet, "qCRC:"))
1527 if (packet_size > 5)
1536 /* skip command character */
1539 addr = strtoul(packet, &separator, 16);
1541 if (*separator != ',')
1543 LOG_ERROR("incomplete read memory packet received, dropping connection");
1544 return ERROR_SERVER_REMOTE_CLOSED;
1547 len = strtoul(separator + 1, NULL, 16);
1549 retval = target_checksum_memory(target, addr, len, &checksum);
1551 if (retval == ERROR_OK)
1553 snprintf(gdb_reply, 10, "C%8.8x", checksum);
1554 gdb_put_packet(connection, gdb_reply, 9);
1558 if ((retval = gdb_error(connection, retval)) != ERROR_OK)
1565 else if (strstr(packet, "qSupported"))
1567 /* we currently support packet size and qXfer:memory-map:read (if enabled)
1568 * disable qXfer:features:read for the moment */
1569 int retval = ERROR_OK;
1570 char *buffer = NULL;
1574 xml_printf(&retval, &buffer, &pos, &size,
1575 "PacketSize=%x;qXfer:memory-map:read%c;qXfer:features:read-;QStartNoAckMode+",
1576 (GDB_BUFFER_SIZE - 1), ((gdb_use_memory_map == 1)&&(flash_get_bank_count()>0)) ? '+' : '-');
1578 if (retval != ERROR_OK)
1580 gdb_send_error(connection, 01);
1584 gdb_put_packet(connection, buffer, strlen(buffer));
1589 else if (strstr(packet, "qXfer:memory-map:read::")&&(flash_get_bank_count()>0))
1591 /* We get away with only specifying flash here. Regions that are not
1592 * specified are treated as if we provided no memory map(if not we
1593 * could detect the holes and mark them as RAM).
1594 * Normally we only execute this code once, but no big deal if we
1595 * have to regenerate it a couple of times. */
1601 int retval = ERROR_OK;
1608 /* skip command character */
1611 offset = strtoul(packet, &separator, 16);
1612 length = strtoul(separator + 1, &separator, 16);
1614 xml_printf(&retval, &xml, &pos, &size, "<memory-map>\n");
1617 sort banks in ascending order, we need to make non-flash memory be ram(or rather
1618 read/write) by default for GDB.
1619 GDB does not have a concept of non-cacheable read/write memory.
1621 flash_bank_t **banks=malloc(sizeof(flash_bank_t *)*flash_get_bank_count());
1624 for (i=0; i<flash_get_bank_count(); i++)
1626 p = get_flash_bank_by_num(i);
1630 retval = ERROR_FAIL;
1631 gdb_send_error(connection, retval);
1637 qsort(banks, flash_get_bank_count(), sizeof(flash_bank_t *), compare_bank);
1640 for (i=0; i<flash_get_bank_count(); i++)
1644 if (ram_start<p->base)
1646 xml_printf(&retval, &xml, &pos, &size, "<memory type=\"ram\" start=\"0x%x\" length=\"0x%x\"/>\n",
1647 ram_start, p->base-ram_start);
1650 /* if device has uneven sector sizes, eg. str7, lpc
1651 * we pass the smallest sector size to gdb memory map */
1652 blocksize = gdb_calc_blocksize(p);
1654 xml_printf(&retval, &xml, &pos, &size, "<memory type=\"flash\" start=\"0x%x\" length=\"0x%x\">\n" \
1655 "<property name=\"blocksize\">0x%x</property>\n" \
1657 p->base, p->size, blocksize);
1658 ram_start=p->base+p->size;
1662 xml_printf(&retval, &xml, &pos, &size, "<memory type=\"ram\" start=\"0x%x\" length=\"0x%x\"/>\n",
1663 ram_start, 0-ram_start);
1666 /* a flash chip could be at the very end of the 32 bit address space, in which case
1667 ram_start will be precisely 0 */
1673 xml_printf(&retval, &xml, &pos, &size, "</memory-map>\n");
1675 if (retval != ERROR_OK)
1677 gdb_send_error(connection, retval);
1681 if (offset + length > pos)
1683 length = pos - offset;
1686 char *t = malloc(length + 1);
1688 memcpy(t + 1, xml + offset, length);
1689 gdb_put_packet(connection, t, length + 1);
1695 else if (strstr(packet, "qXfer:features:read:"))
1700 int retval = ERROR_OK;
1703 unsigned int length;
1706 /* skip command character */
1709 if (decode_xfer_read(packet, &annex, &offset, &length) < 0)
1711 gdb_send_error(connection, 01);
1715 if (strcmp(annex, "target.xml") != 0)
1717 gdb_send_error(connection, 01);
1721 xml_printf(&retval, &xml, &pos, &size, \
1722 "l<target version=\"1.0\">\n<architecture>arm</architecture>\n</target>\n");
1724 if (retval != ERROR_OK)
1726 gdb_send_error(connection, retval);
1730 gdb_put_packet(connection, xml, strlen(xml));
1735 else if (strstr(packet, "QStartNoAckMode"))
1737 gdb_connection->noack_mode = 1;
1738 gdb_put_packet(connection, "OK", 2);
1742 gdb_put_packet(connection, "", 0);
1746 int gdb_v_packet(connection_t *connection, target_t *target, char *packet, int packet_size)
1748 gdb_connection_t *gdb_connection = connection->priv;
1749 gdb_service_t *gdb_service = connection->service->priv;
1752 /* if flash programming disabled - send a empty reply */
1754 if (gdb_flash_program == 0)
1756 gdb_put_packet(connection, "", 0);
1760 if (strstr(packet, "vFlashErase:"))
1763 unsigned long length;
1765 char *parse = packet + 12;
1768 LOG_ERROR("incomplete vFlashErase packet received, dropping connection");
1769 return ERROR_SERVER_REMOTE_CLOSED;
1772 addr = strtoul(parse, &parse, 16);
1774 if (*(parse++) != ',' || *parse == '\0')
1776 LOG_ERROR("incomplete vFlashErase packet received, dropping connection");
1777 return ERROR_SERVER_REMOTE_CLOSED;
1780 length = strtoul(parse, &parse, 16);
1784 LOG_ERROR("incomplete vFlashErase packet received, dropping connection");
1785 return ERROR_SERVER_REMOTE_CLOSED;
1788 /* assume all sectors need erasing - stops any problems
1789 * when flash_write is called multiple times */
1792 /* perform any target specific operations before the erase */
1793 target_call_event_callbacks(gdb_service->target, TARGET_EVENT_GDB_FLASH_ERASE_START);
1794 result = flash_erase_address_range(gdb_service->target, addr, length );
1795 target_call_event_callbacks(gdb_service->target, TARGET_EVENT_GDB_FLASH_ERASE_END);
1798 if (result != ERROR_OK)
1800 /* GDB doesn't evaluate the actual error number returned,
1801 * treat a failed erase as an I/O error
1803 gdb_send_error(connection, EIO);
1804 LOG_ERROR("flash_erase returned %i", result);
1807 gdb_put_packet(connection, "OK", 2);
1812 if (strstr(packet, "vFlashWrite:"))
1815 unsigned long length;
1816 char *parse = packet + 12;
1820 LOG_ERROR("incomplete vFlashErase packet received, dropping connection");
1821 return ERROR_SERVER_REMOTE_CLOSED;
1823 addr = strtoul(parse, &parse, 16);
1824 if (*(parse++) != ':')
1826 LOG_ERROR("incomplete vFlashErase packet received, dropping connection");
1827 return ERROR_SERVER_REMOTE_CLOSED;
1829 length = packet_size - (parse - packet);
1831 /* create a new image if there isn't already one */
1832 if (gdb_connection->vflash_image == NULL)
1834 gdb_connection->vflash_image = malloc(sizeof(image_t));
1835 image_open(gdb_connection->vflash_image, "", "build");
1838 /* create new section with content from packet buffer */
1839 image_add_section(gdb_connection->vflash_image, addr, length, 0x0, (u8*)parse);
1841 gdb_put_packet(connection, "OK", 2);
1846 if (!strcmp(packet, "vFlashDone"))
1850 /* process the flashing buffer. No need to erase as GDB
1851 * always issues a vFlashErase first. */
1852 target_call_event_callbacks(gdb_service->target, TARGET_EVENT_GDB_FLASH_WRITE_START);
1853 result = flash_write(gdb_service->target, gdb_connection->vflash_image, &written, 0);
1854 target_call_event_callbacks(gdb_service->target, TARGET_EVENT_GDB_FLASH_WRITE_END);
1855 if ( result != ERROR_OK)
1857 if (result == ERROR_FLASH_DST_OUT_OF_BANK)
1858 gdb_put_packet(connection, "E.memtype", 9);
1860 gdb_send_error(connection, EIO);
1864 LOG_DEBUG("wrote %u bytes from vFlash image to flash", written);
1865 gdb_put_packet(connection, "OK", 2);
1868 image_close(gdb_connection->vflash_image);
1869 free(gdb_connection->vflash_image);
1870 gdb_connection->vflash_image = NULL;
1875 gdb_put_packet(connection, "", 0);
1879 int gdb_detach(connection_t *connection, target_t *target)
1882 switch( detach_mode )
1884 case GDB_DETACH_RESUME:
1885 target_handle_event( target, TARGET_EVENT_OLD_pre_resume );
1886 target_resume(target, 1, 0, 1, 0);
1889 case GDB_DETACH_RESET:
1890 /* FIX?? make this configurable?? */
1891 target_process_reset(connection->cmd_ctx, RESET_HALT);
1894 case GDB_DETACH_HALT:
1895 target_halt(target);
1898 case GDB_DETACH_NOTHING:
1902 gdb_put_packet(connection, "OK", 2);
1906 static void gdb_log_callback(void *priv, const char *file, int line,
1907 const char *function, const char *string)
1909 connection_t *connection = priv;
1910 gdb_connection_t *gdb_con = connection->priv;
1914 /* do not reply this using the O packet */
1918 gdb_output_con(connection, string);
1921 /* Do not allocate this on the stack */
1922 char gdb_packet_buffer[GDB_BUFFER_SIZE];
1924 static void gdb_sig_halted(connection_t *connection)
1927 snprintf(sig_reply, 4, "T%2.2x", 2);
1928 gdb_put_packet(connection, sig_reply, 3);
1932 int gdb_input_inner(connection_t *connection)
1934 gdb_service_t *gdb_service = connection->service->priv;
1935 target_t *target = gdb_service->target;
1936 char *packet=gdb_packet_buffer;
1939 gdb_connection_t *gdb_con = connection->priv;
1940 static int extended_protocol = 0;
1942 /* drain input buffer */
1945 packet_size = GDB_BUFFER_SIZE-1;
1946 if ((retval = gdb_get_packet(connection, packet, &packet_size)) != ERROR_OK)
1951 /* terminate with zero */
1952 packet[packet_size] = 0;
1954 LOG_DEBUG("received packet: '%s'", packet);
1956 if (packet_size > 0)
1962 /* Hct... -- set thread
1963 * we don't have threads, send empty reply */
1964 gdb_put_packet(connection, NULL, 0);
1968 retval = gdb_query_packet(connection, target, packet, packet_size);
1971 retval = gdb_get_registers_packet(connection, target, packet, packet_size);
1974 retval = gdb_set_registers_packet(connection, target, packet, packet_size);
1977 retval = gdb_get_register_packet(connection, target, packet, packet_size);
1980 retval = gdb_set_register_packet(connection, target, packet, packet_size);
1983 retval = gdb_read_memory_packet(connection, target, packet, packet_size);
1986 retval = gdb_write_memory_packet(connection, target, packet, packet_size);
1990 retval = gdb_breakpoint_watchpoint_packet(connection, target, packet, packet_size);
1993 gdb_last_signal_packet(connection, target, packet, packet_size);
1998 if (target->state != TARGET_HALTED)
2000 /* If the target isn't in the halted state, then we can't
2001 * step/continue. This might be early setup, etc.
2003 gdb_sig_halted(connection);
2006 /* We're running/stepping, in which case we can
2007 * forward log output until the target is halted
2009 gdb_connection_t *gdb_con = connection->priv;
2010 gdb_con->frontend_state = TARGET_RUNNING;
2011 log_add_callback(gdb_log_callback, connection);
2012 int retval=gdb_step_continue_packet(connection, target, packet, packet_size);
2013 if (retval!=ERROR_OK)
2015 /* we'll never receive a halted condition... issue a false one.. */
2016 gdb_frontend_halted(target, connection);
2022 retval = gdb_v_packet(connection, target, packet, packet_size);
2025 retval = gdb_detach(connection, target);
2026 extended_protocol = 0;
2029 if ((retval = gdb_write_memory_binary_packet(connection, target, packet, packet_size)) != ERROR_OK)
2033 if (extended_protocol != 0)
2035 gdb_put_packet(connection, "OK", 2);
2036 return ERROR_SERVER_REMOTE_CLOSED;
2038 /* handle extended remote protocol */
2039 extended_protocol = 1;
2040 gdb_put_packet(connection, "OK", 2);
2043 /* handle extended restart packet */
2044 breakpoint_clear_target(gdb_service->target);
2045 watchpoint_clear_target(gdb_service->target);
2046 command_run_linef(connection->cmd_ctx, "ocd_gdb_restart %d", get_num_by_target(target));
2049 /* ignore unkown packets */
2050 LOG_DEBUG("ignoring 0x%2.2x packet", packet[0]);
2051 gdb_put_packet(connection, NULL, 0);
2055 /* if a packet handler returned an error, exit input loop */
2056 if (retval != ERROR_OK)
2060 if (gdb_con->ctrl_c)
2062 if (target->state == TARGET_RUNNING)
2064 target_halt(target);
2065 gdb_con->ctrl_c = 0;
2069 } while (gdb_con->buf_cnt > 0);
2074 int gdb_input(connection_t *connection)
2076 int retval = gdb_input_inner(connection);
2077 gdb_connection_t *gdb_con = connection->priv;
2078 if (retval == ERROR_SERVER_REMOTE_CLOSED)
2081 /* logging does not propagate the error, yet can set th gdb_con->closed flag */
2082 if (gdb_con->closed)
2083 return ERROR_SERVER_REMOTE_CLOSED;
2085 /* we'll recover from any other errors(e.g. temporary timeouts, etc.) */
2091 gdb_service_t *gdb_service;
2092 target_t *target = all_targets;
2096 LOG_WARNING("no gdb ports allocated as no target has been specified");
2102 LOG_WARNING("no gdb port specified, using default port 3333");
2108 char service_name[8];
2110 snprintf(service_name, 8, "gdb-%2.2i", target->target_number);
2112 gdb_service = malloc(sizeof(gdb_service_t));
2113 gdb_service->target = target;
2115 add_service("gdb", CONNECTION_GDB,
2116 gdb_port + target->target_number,
2117 1, gdb_new_connection, gdb_input,
2118 gdb_connection_closed,
2121 LOG_DEBUG("gdb service for target %s at port %i",
2123 gdb_port + target->target_number);
2125 target = target->next;
2131 /* daemon configuration command gdb_port */
2132 int handle_gdb_port_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2137 /* only if the port wasn't overwritten by cmdline */
2139 gdb_port = strtoul(args[0], NULL, 0);
2144 int handle_gdb_detach_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2148 if (strcmp(args[0], "resume") == 0)
2150 detach_mode = GDB_DETACH_RESUME;
2153 else if (strcmp(args[0], "reset") == 0)
2155 detach_mode = GDB_DETACH_RESET;
2158 else if (strcmp(args[0], "halt") == 0)
2160 detach_mode = GDB_DETACH_HALT;
2163 else if (strcmp(args[0], "nothing") == 0)
2165 detach_mode = GDB_DETACH_NOTHING;
2170 LOG_WARNING("invalid gdb_detach configuration directive: %s", args[0]);
2174 int handle_gdb_memory_map_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2178 if (strcmp(args[0], "enable") == 0)
2180 gdb_use_memory_map = 1;
2183 else if (strcmp(args[0], "disable") == 0)
2185 gdb_use_memory_map = 0;
2190 LOG_WARNING("invalid gdb_memory_map configuration directive: %s", args[0]);
2194 int handle_gdb_flash_program_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2198 if (strcmp(args[0], "enable") == 0)
2200 gdb_flash_program = 1;
2203 else if (strcmp(args[0], "disable") == 0)
2205 gdb_flash_program = 0;
2210 LOG_WARNING("invalid gdb_memory_map configuration directive: %s", args[0]);
2214 int handle_gdb_report_data_abort_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2218 if (strcmp(args[0], "enable") == 0)
2220 gdb_report_data_abort = 1;
2223 else if (strcmp(args[0], "disable") == 0)
2225 gdb_report_data_abort = 0;
2230 LOG_WARNING("invalid gdb_report_data_abort configuration directive: %s", args[0]);
2234 /* daemon configuration command gdb_port */
2235 int handle_gdb_breakpoint_override_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2242 gdb_breakpoint_override = 1;
2243 if (strcmp(args[0], "hard")==0)
2245 gdb_breakpoint_override_type=BKPT_HARD;
2246 } else if (strcmp(args[0], "soft")==0)
2248 gdb_breakpoint_override_type=BKPT_SOFT;
2249 } else if (strcmp(args[0], "disable") == 0)
2251 gdb_breakpoint_override = 0;
2255 return ERROR_COMMAND_SYNTAX_ERROR;
2257 if (gdb_breakpoint_override)
2259 LOG_USER("force %s breakpoints", (gdb_breakpoint_override_type==BKPT_HARD)?"hard":"soft");
2262 LOG_USER("breakpoint type is not overriden");
2269 int gdb_register_commands(command_context_t *command_context)
2271 register_command(command_context, NULL, "gdb_port", handle_gdb_port_command,
2272 COMMAND_CONFIG, "");
2273 register_command(command_context, NULL, "gdb_detach", handle_gdb_detach_command,
2274 COMMAND_CONFIG, "");
2275 register_command(command_context, NULL, "gdb_memory_map", handle_gdb_memory_map_command,
2276 COMMAND_CONFIG, "");
2277 register_command(command_context, NULL, "gdb_flash_program", handle_gdb_flash_program_command,
2278 COMMAND_CONFIG, "");
2279 register_command(command_context, NULL, "gdb_report_data_abort", handle_gdb_report_data_abort_command,
2280 COMMAND_CONFIG, "");
2281 register_command(command_context, NULL, "gdb_breakpoint_override", handle_gdb_breakpoint_override_command,
2282 COMMAND_EXEC, "hard/soft/disabled - force breakpoint type for gdb 'break' commands."
2283 "The raison d'etre for this option is to support GDB GUI's without "
2284 "a hard/soft breakpoint concept where the default OpenOCD behaviour "
2285 "is not sufficient");