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"
41 #include "target_request.h"
42 #include "configuration.h"
50 #define _DEBUG_GDB_IO_
53 static int gdb_breakpoint_override;
54 static enum breakpoint_type gdb_breakpoint_override_type;
56 extern int gdb_error(connection_t *connection, int retval);
57 static unsigned short gdb_port;
58 static const char *DIGITS = "0123456789abcdef";
60 static void gdb_log_callback(void *priv, const char *file, int line,
61 const char *function, const char *string);
71 /* target behaviour on gdb detach */
72 enum gdb_detach_mode detach_mode = GDB_DETACH_RESUME;
74 /* set if we are sending a memory map to gdb
75 * via qXfer:memory-map:read packet */
76 /* enabled by default*/
77 int gdb_use_memory_map = 1;
78 /* enabled by default*/
79 int gdb_flash_program = 1;
81 /* if set, data aborts cause an error to be reported in memory read packets
82 * see the code in gdb_read_memory_packet() for further explanations */
83 int gdb_report_data_abort = 0;
85 int gdb_last_signal(target_t *target)
87 switch (target->debug_reason)
89 case DBG_REASON_DBGRQ:
90 return 0x2; /* SIGINT */
91 case DBG_REASON_BREAKPOINT:
92 case DBG_REASON_WATCHPOINT:
93 case DBG_REASON_WPTANDBKPT:
94 return 0x05; /* SIGTRAP */
95 case DBG_REASON_SINGLESTEP:
96 return 0x05; /* SIGTRAP */
97 case DBG_REASON_NOTHALTED:
98 return 0x0; /* no signal... shouldn't happen */
100 LOG_USER("undefined debug reason %d - target needs reset", target->debug_reason);
105 int check_pending(connection_t *connection, int timeout_s, int *got_data)
107 /* a non-blocking socket will block if there is 0 bytes available on the socket,
108 * but return with as many bytes as are available immediately
112 gdb_connection_t *gdb_con = connection->priv;
118 if (gdb_con->buf_cnt>0)
125 FD_SET(connection->fd, &read_fds);
127 tv.tv_sec = timeout_s;
129 if (select(connection->fd + 1, &read_fds, NULL, NULL, &tv) == 0)
131 /* This can typically be because a "monitor" command took too long
132 * before printing any progress messages
136 return ERROR_GDB_TIMEOUT;
142 *got_data=FD_ISSET(connection->fd, &read_fds)!=0;
146 int gdb_get_char(connection_t *connection, int* next_char)
148 gdb_connection_t *gdb_con = connection->priv;
151 #ifdef _DEBUG_GDB_IO_
155 if (gdb_con->buf_cnt-- > 0)
157 *next_char = *(gdb_con->buf_p++);
158 if (gdb_con->buf_cnt > 0)
159 connection->input_pending = 1;
161 connection->input_pending = 0;
163 #ifdef _DEBUG_GDB_IO_
164 LOG_DEBUG("returned char '%c' (0x%2.2x)", *next_char, *next_char);
172 retval=check_pending(connection, 1, NULL);
173 if (retval!=ERROR_OK)
175 gdb_con->buf_cnt = read_socket(connection->fd, gdb_con->buffer, GDB_BUFFER_SIZE);
176 if (gdb_con->buf_cnt > 0)
180 if (gdb_con->buf_cnt == 0)
183 return ERROR_SERVER_REMOTE_CLOSED;
187 errno = WSAGetLastError();
194 case WSAECONNABORTED:
196 return ERROR_SERVER_REMOTE_CLOSED;
199 return ERROR_SERVER_REMOTE_CLOSED;
201 LOG_ERROR("read: %d", errno);
212 return ERROR_SERVER_REMOTE_CLOSED;
215 return ERROR_SERVER_REMOTE_CLOSED;
217 LOG_ERROR("read: %s", strerror(errno));
219 return ERROR_SERVER_REMOTE_CLOSED;
224 #ifdef _DEBUG_GDB_IO_
225 debug_buffer = malloc(gdb_con->buf_cnt + 1);
226 memcpy(debug_buffer, gdb_con->buffer, gdb_con->buf_cnt);
227 debug_buffer[gdb_con->buf_cnt] = 0;
228 LOG_DEBUG("received '%s'", debug_buffer);
232 gdb_con->buf_p = gdb_con->buffer;
234 *next_char = *(gdb_con->buf_p++);
235 if (gdb_con->buf_cnt > 0)
236 connection->input_pending = 1;
238 connection->input_pending = 0;
239 #ifdef _DEBUG_GDB_IO_
240 LOG_DEBUG("returned char '%c' (0x%2.2x)", *next_char, *next_char);
246 int gdb_putback_char(connection_t *connection, int last_char)
248 gdb_connection_t *gdb_con = connection->priv;
250 if (gdb_con->buf_p > gdb_con->buffer)
252 *(--gdb_con->buf_p) = last_char;
257 LOG_ERROR("BUG: couldn't put character back");
263 /* The only way we can detect that the socket is closed is the first time
264 * we write to it, we will fail. Subsequent write operations will
265 * succeed. Shudder! */
266 int gdb_write(connection_t *connection, void *data, int len)
268 gdb_connection_t *gdb_con = connection->priv;
270 return ERROR_SERVER_REMOTE_CLOSED;
272 if (write_socket(connection->fd, data, len) == len)
277 return ERROR_SERVER_REMOTE_CLOSED;
280 int gdb_put_packet_inner(connection_t *connection, char *buffer, int len)
283 unsigned char my_checksum = 0;
284 #ifdef _DEBUG_GDB_IO_
289 gdb_connection_t *gdb_con = connection->priv;
291 for (i = 0; i < len; i++)
292 my_checksum += buffer[i];
294 #ifdef _DEBUG_GDB_IO_
296 * At this point we should have nothing in the input queue from GDB,
297 * however sometimes '-' is sent even though we've already received
298 * an ACK (+) for everything we've sent off.
303 if ((retval=check_pending(connection, 0, &gotdata))!=ERROR_OK)
307 if ((retval = gdb_get_char(connection, &reply)) != ERROR_OK)
310 // fix a problem with some IAR tools
311 gdb_putback_char( connection, reply );
312 LOG_DEBUG("Unexpected start of new packet");
316 LOG_WARNING("Discard unexpected char %c", reply);
322 #ifdef _DEBUG_GDB_IO_
323 debug_buffer = malloc(len + 1);
324 memcpy(debug_buffer, buffer, len);
325 debug_buffer[len] = 0;
326 LOG_DEBUG("sending packet '$%s#%2.2x'", debug_buffer, my_checksum);
330 char local_buffer[1024];
331 local_buffer[0] = '$';
332 if (len+4 <= sizeof(local_buffer))
334 /* performance gain on smaller packets by only a single call to gdb_write() */
335 memcpy(local_buffer+1, buffer, len++);
336 local_buffer[len++] = '#';
337 local_buffer[len++] = DIGITS[(my_checksum >> 4) & 0xf];
338 local_buffer[len++] = DIGITS[my_checksum & 0xf];
339 if((retval = gdb_write(connection, local_buffer, len)) != ERROR_OK)
346 /* larger packets are transmitted directly from caller supplied buffer
347 by several calls to gdb_write() to avoid dynamic allocation */
348 local_buffer[1] = '#';
349 local_buffer[2] = DIGITS[(my_checksum >> 4) & 0xf];
350 local_buffer[3] = DIGITS[my_checksum & 0xf];
351 if((retval = gdb_write(connection, local_buffer, 1)) != ERROR_OK)
355 if((retval = gdb_write(connection, buffer, len)) != ERROR_OK)
359 if((retval = gdb_write(connection, local_buffer+1, 3)) != ERROR_OK)
365 if (gdb_con->noack_mode)
368 if ((retval = gdb_get_char(connection, &reply)) != ERROR_OK)
373 else if (reply == '-')
375 /* Stop sending output packets for now */
376 log_remove_callback(gdb_log_callback, connection);
377 LOG_WARNING("negative reply, retrying");
379 else if (reply == 0x3)
382 if ((retval = gdb_get_char(connection, &reply)) != ERROR_OK)
386 else if (reply == '-')
388 /* Stop sending output packets for now */
389 log_remove_callback(gdb_log_callback, connection);
390 LOG_WARNING("negative reply, retrying");
392 else if( reply == '$' ){
393 LOG_ERROR("GDB missing ack(1) - assumed good");
394 gdb_putback_char( connection, reply );
398 LOG_ERROR("unknown character(1) 0x%2.2x in reply, dropping connection", reply);
400 return ERROR_SERVER_REMOTE_CLOSED;
403 else if( reply == '$' ){
404 LOG_ERROR("GDB missing ack(2) - assumed good");
405 gdb_putback_char( connection, reply );
410 LOG_ERROR("unknown character(2) 0x%2.2x in reply, dropping connection", reply);
412 return ERROR_SERVER_REMOTE_CLOSED;
416 return ERROR_SERVER_REMOTE_CLOSED;
421 int gdb_put_packet(connection_t *connection, char *buffer, int len)
423 gdb_connection_t *gdb_con = connection->priv;
425 int retval = gdb_put_packet_inner(connection, buffer, len);
428 /* we sent some data, reset timer for keep alive messages */
434 static __inline__ int fetch_packet(connection_t *connection, int *checksum_ok, int noack, int *len, char *buffer)
436 unsigned char my_checksum = 0;
441 gdb_connection_t *gdb_con = connection->priv;
447 /* The common case is that we have an entire packet with no escape chars.
448 * We need to leave at least 2 bytes in the buffer to have
449 * gdb_get_char() update various bits and bobs correctly.
451 if ((gdb_con->buf_cnt > 2) && ((gdb_con->buf_cnt+count) < *len))
453 /* The compiler will struggle a bit with constant propagation and
454 * aliasing, so we help it by showing that these values do not
455 * change inside the loop
458 char *buf = gdb_con->buf_p;
459 int run = gdb_con->buf_cnt - 2;
466 if (character == '#')
468 /* Danger! character can be '#' when esc is
469 * used so we need an explicit boolean for done here.
475 if (character == '}')
477 /* data transmitted in binary mode (X packet)
478 * uses 0x7d as escape character */
479 my_checksum += character & 0xff;
482 my_checksum += character & 0xff;
483 buffer[count++] = (character ^ 0x20) & 0xff;
487 my_checksum += character & 0xff;
488 buffer[count++] = character & 0xff;
492 gdb_con->buf_cnt -= i;
498 LOG_ERROR("packet buffer too small");
499 return ERROR_GDB_BUFFER_TOO_SMALL;
502 if ((retval = gdb_get_char(connection, &character)) != ERROR_OK)
505 if (character == '#')
508 if (character == '}')
510 /* data transmitted in binary mode (X packet)
511 * uses 0x7d as escape character */
512 my_checksum += character & 0xff;
513 if ((retval = gdb_get_char(connection, &character)) != ERROR_OK)
515 my_checksum += character & 0xff;
516 buffer[count++] = (character ^ 0x20) & 0xff;
520 my_checksum += character & 0xff;
521 buffer[count++] = character & 0xff;
527 if ((retval = gdb_get_char(connection, &character)) != ERROR_OK)
529 checksum[0] = character;
530 if ((retval = gdb_get_char(connection, &character)) != ERROR_OK)
532 checksum[1] = character;
537 *checksum_ok=(my_checksum == strtoul(checksum, NULL, 16));
543 int gdb_get_packet_inner(connection_t *connection, char *buffer, int *len)
547 gdb_connection_t *gdb_con = connection->priv;
553 if ((retval = gdb_get_char(connection, &character)) != ERROR_OK)
556 #ifdef _DEBUG_GDB_IO_
557 LOG_DEBUG("character: '%c'", character);
565 /* gdb sends a dummy ack '+' at every remote connect - see remote_start_remote (remote.c)
566 * incase anyone tries to debug why they receive this warning every time */
567 LOG_WARNING("acknowledgment received, but no packet pending");
570 LOG_WARNING("negative acknowledgment, but no packet pending");
577 LOG_WARNING("ignoring character 0x%x", character);
580 } while (character != '$');
585 /* explicit code expansion here to get faster inlined code in -O3 by not
586 * calculating checksum
588 if (gdb_con->noack_mode)
590 if ((retval=fetch_packet(connection, &checksum_ok, 1, len, buffer))!=ERROR_OK)
594 if ((retval=fetch_packet(connection, &checksum_ok, 0, len, buffer))!=ERROR_OK)
598 if (gdb_con->noack_mode)
600 /* checksum is not checked in noack mode */
605 if ((retval = gdb_write(connection, "+", 1)) != ERROR_OK)
613 return ERROR_SERVER_REMOTE_CLOSED;
618 int gdb_get_packet(connection_t *connection, char *buffer, int *len)
620 gdb_connection_t *gdb_con = connection->priv;
622 int retval = gdb_get_packet_inner(connection, buffer, len);
627 int gdb_output_con(connection_t *connection, const char* line)
632 bin_size = strlen(line);
634 hex_buffer = malloc(bin_size*2 + 2);
635 if (hex_buffer == NULL)
636 return ERROR_GDB_BUFFER_TOO_SMALL;
639 for (i=0; i<bin_size; i++)
640 snprintf(hex_buffer + 1 + i*2, 3, "%2.2x", line[i]);
641 hex_buffer[bin_size*2+1] = 0;
643 int retval = gdb_put_packet(connection, hex_buffer, bin_size*2 + 1);
649 int gdb_output(struct command_context_s *context, const char* line)
651 /* this will be dumped to the log and also sent as an O packet if possible */
652 LOG_USER_N("%s", line);
657 static void gdb_frontend_halted(struct target_s *target, connection_t *connection)
659 gdb_connection_t *gdb_connection = connection->priv;
661 /* In the GDB protocol when we are stepping or coninuing execution,
662 * we have a lingering reply. Upon receiving a halted event
663 * when we have that lingering packet, we reply to the original
664 * step or continue packet.
666 * Executing monitor commands can bring the target in and
667 * out of the running state so we'll see lots of TARGET_EVENT_XXX
668 * that are to be ignored.
670 if (gdb_connection->frontend_state == TARGET_RUNNING)
674 /* stop forwarding log packets! */
675 log_remove_callback(gdb_log_callback, connection);
677 if (gdb_connection->ctrl_c)
680 gdb_connection->ctrl_c = 0;
684 signal = gdb_last_signal(target);
687 snprintf(sig_reply, 4, "T%2.2x", signal);
688 gdb_put_packet(connection, sig_reply, 3);
689 gdb_connection->frontend_state = TARGET_HALTED;
693 int gdb_target_callback_event_handler(struct target_s *target, enum target_event event, void *priv)
696 connection_t *connection = priv;
698 target_handle_event( target, event );
701 case TARGET_EVENT_EARLY_HALTED:
702 gdb_frontend_halted(target, connection);
704 case TARGET_EVENT_GDB_FLASH_ERASE_START:
705 target_handle_event( target, TARGET_EVENT_OLD_gdb_program_config );
706 if((retval = jtag_execute_queue()) != ERROR_OK)
719 int gdb_new_connection(connection_t *connection)
721 gdb_connection_t *gdb_connection = malloc(sizeof(gdb_connection_t));
722 gdb_service_t *gdb_service = connection->service->priv;
726 connection->priv = gdb_connection;
728 /* initialize gdb connection information */
729 gdb_connection->buf_p = gdb_connection->buffer;
730 gdb_connection->buf_cnt = 0;
731 gdb_connection->ctrl_c = 0;
732 gdb_connection->frontend_state = TARGET_HALTED;
733 gdb_connection->vflash_image = NULL;
734 gdb_connection->closed = 0;
735 gdb_connection->busy = 0;
736 gdb_connection->noack_mode = 0;
738 /* send ACK to GDB for debug request */
739 gdb_write(connection, "+", 1);
741 /* output goes through gdb connection */
742 command_set_output_handler(connection->cmd_ctx, gdb_output, connection);
744 /* we must remove all breakpoints registered to the target as a previous
745 * GDB session could leave dangling breakpoints if e.g. communication
748 breakpoint_clear_target(gdb_service->target);
749 watchpoint_clear_target(gdb_service->target);
751 /* register callback to be informed about target events */
752 target_register_event_callback(gdb_target_callback_event_handler, connection);
754 /* a gdb session just attached, try to put the target in halt mode.
758 * If the halt fails(e.g. target needs a reset, JTAG communication not
759 * working, etc.), then the GDB connect will succeed as
760 * the get_gdb_reg_list() will lie and return a register list with
763 * This allows GDB monitor commands to be run from a GDB init script to
764 * initialize the target
766 * Also, since the halt() is asynchronous target connect will be
767 * instantaneous and thus avoiding annoying timeout problems during
770 target_halt(gdb_service->target);
771 /* FIX!!!! could extended-remote work better here?
773 * wait a tiny bit for halted state or we just continue. The
774 * GDB register packet will then contain garbage
776 target_wait_state(gdb_service->target, TARGET_HALTED, 500);
778 /* remove the initial ACK from the incoming buffer */
779 if ((retval = gdb_get_char(connection, &initial_ack)) != ERROR_OK)
782 /* FIX!!!??? would we actually ever receive a + here???
785 if (initial_ack != '+')
786 gdb_putback_char(connection, initial_ack);
787 target_call_event_callbacks(gdb_service->target, TARGET_EVENT_GDB_ATTACH );
791 int gdb_connection_closed(connection_t *connection)
793 gdb_service_t *gdb_service = connection->service->priv;
794 gdb_connection_t *gdb_connection = connection->priv;
796 /* see if an image built with vFlash commands is left */
797 if (gdb_connection->vflash_image)
799 image_close(gdb_connection->vflash_image);
800 free(gdb_connection->vflash_image);
801 gdb_connection->vflash_image = NULL;
804 /* if this connection registered a debug-message receiver delete it */
805 delete_debug_msg_receiver(connection->cmd_ctx, gdb_service->target);
807 if (connection->priv)
809 free(connection->priv);
810 connection->priv = NULL;
814 LOG_ERROR("BUG: connection->priv == NULL");
817 target_unregister_event_callback(gdb_target_callback_event_handler, connection);
818 log_remove_callback(gdb_log_callback, connection);
820 target_call_event_callbacks(gdb_service->target, TARGET_EVENT_GDB_DETACH );
825 void gdb_send_error(connection_t *connection, u8 the_error)
828 snprintf(err, 4, "E%2.2X", the_error );
829 gdb_put_packet(connection, err, 3);
832 int gdb_last_signal_packet(connection_t *connection, target_t *target, char* packet, int packet_size)
837 signal = gdb_last_signal(target);
839 snprintf(sig_reply, 4, "S%2.2x", signal);
840 gdb_put_packet(connection, sig_reply, 3);
845 /* Convert register to string of bits. NB! The # of bits in the
846 * register might be non-divisible by 8(a byte), in which
847 * case an entire byte is shown. */
848 void gdb_str_to_target(target_t *target, char *tstr, reg_t *reg)
855 buf_len = CEIL(reg->size, 8);
857 for (i = 0; i < buf_len; i++)
859 tstr[i*2] = DIGITS[(buf[i]>>4) & 0xf];
860 tstr[i*2+1] = DIGITS[buf[i]&0xf];
864 void gdb_target_to_str(target_t *target, char *tstr, char *str)
866 int str_len = strlen(tstr);
871 LOG_ERROR("BUG: gdb value with uneven number of characters encountered");
875 for (i = 0; i < str_len; i+=2)
877 str[str_len - i - 1] = tstr[i + 1];
878 str[str_len - i - 2] = tstr[i];
882 int gdb_get_registers_packet(connection_t *connection, target_t *target, char* packet, int packet_size)
887 int reg_packet_size = 0;
892 #ifdef _DEBUG_GDB_IO_
896 if ((retval = target->type->get_gdb_reg_list(target, ®_list, ®_list_size)) != ERROR_OK)
898 return gdb_error(connection, retval);
901 for (i = 0; i < reg_list_size; i++)
903 reg_packet_size += reg_list[i]->size;
906 reg_packet = malloc(CEIL(reg_packet_size, 8) * 2);
907 reg_packet_p = reg_packet;
909 for (i = 0; i < reg_list_size; i++)
911 gdb_str_to_target(target, reg_packet_p, reg_list[i]);
912 reg_packet_p += CEIL(reg_list[i]->size, 8) * 2;
915 #ifdef _DEBUG_GDB_IO_
918 reg_packet_p = strndup(reg_packet, CEIL(reg_packet_size, 8) * 2);
919 LOG_DEBUG("reg_packet: %s", reg_packet_p);
924 gdb_put_packet(connection, reg_packet, CEIL(reg_packet_size, 8) * 2);
932 int gdb_set_registers_packet(connection_t *connection, target_t *target, char *packet, int packet_size)
940 #ifdef _DEBUG_GDB_IO_
944 /* skip command character */
950 LOG_WARNING("GDB set_registers packet with uneven characters received, dropping connection");
951 return ERROR_SERVER_REMOTE_CLOSED;
954 if ((retval = target->type->get_gdb_reg_list(target, ®_list, ®_list_size)) != ERROR_OK)
956 return gdb_error(connection, retval);
960 for (i = 0; i < reg_list_size; i++)
964 reg_arch_type_t *arch_type;
966 /* convert from GDB-string (target-endian) to hex-string (big-endian) */
967 hex_buf = malloc(CEIL(reg_list[i]->size, 8) * 2);
968 gdb_target_to_str(target, packet_p, hex_buf);
970 /* convert hex-string to binary buffer */
971 bin_buf = malloc(CEIL(reg_list[i]->size, 8));
972 str_to_buf(hex_buf, CEIL(reg_list[i]->size, 8) * 2, bin_buf, reg_list[i]->size, 16);
974 /* get register arch_type, and call set method */
975 arch_type = register_get_arch_type(reg_list[i]->arch_type);
977 arch_type->set(reg_list[i], bin_buf);
979 /* advance packet pointer */
980 packet_p += (CEIL(reg_list[i]->size, 8) * 2);
986 /* free reg_t *reg_list[] array allocated by get_gdb_reg_list */
989 gdb_put_packet(connection, "OK", 2);
994 int gdb_get_register_packet(connection_t *connection, target_t *target, char *packet, int packet_size)
997 int reg_num = strtoul(packet + 1, NULL, 16);
1002 #ifdef _DEBUG_GDB_IO_
1006 if ((retval = target->type->get_gdb_reg_list(target, ®_list, ®_list_size)) != ERROR_OK)
1008 return gdb_error(connection, retval);
1011 if (reg_list_size <= reg_num)
1013 LOG_ERROR("gdb requested a non-existing register");
1017 reg_packet = malloc(CEIL(reg_list[reg_num]->size, 8) * 2);
1019 gdb_str_to_target(target, reg_packet, reg_list[reg_num]);
1021 gdb_put_packet(connection, reg_packet, CEIL(reg_list[reg_num]->size, 8) * 2);
1029 int gdb_set_register_packet(connection_t *connection, target_t *target, char *packet, int packet_size)
1034 int reg_num = strtoul(packet + 1, &separator, 16);
1038 reg_arch_type_t *arch_type;
1042 if ((retval = target->type->get_gdb_reg_list(target, ®_list, ®_list_size)) != ERROR_OK)
1044 return gdb_error(connection, retval);
1047 if (reg_list_size < reg_num)
1049 LOG_ERROR("gdb requested a non-existing register");
1050 return ERROR_SERVER_REMOTE_CLOSED;
1053 if (*separator != '=')
1055 LOG_ERROR("GDB 'set register packet', but no '=' following the register number");
1056 return ERROR_SERVER_REMOTE_CLOSED;
1059 /* convert from GDB-string (target-endian) to hex-string (big-endian) */
1060 hex_buf = malloc(CEIL(reg_list[reg_num]->size, 8) * 2);
1061 gdb_target_to_str(target, separator + 1, hex_buf);
1063 /* convert hex-string to binary buffer */
1064 bin_buf = malloc(CEIL(reg_list[reg_num]->size, 8));
1065 str_to_buf(hex_buf, CEIL(reg_list[reg_num]->size, 8) * 2, bin_buf, reg_list[reg_num]->size, 16);
1067 /* get register arch_type, and call set method */
1068 arch_type = register_get_arch_type(reg_list[reg_num]->arch_type);
1069 arch_type->set(reg_list[reg_num], bin_buf);
1071 gdb_put_packet(connection, "OK", 2);
1080 int gdb_error(connection_t *connection, int retval)
1084 case ERROR_TARGET_DATA_ABORT:
1085 gdb_send_error(connection, EIO);
1087 case ERROR_TARGET_TRANSLATION_FAULT:
1088 gdb_send_error(connection, EFAULT);
1090 case ERROR_TARGET_UNALIGNED_ACCESS:
1091 gdb_send_error(connection, EFAULT);
1093 case ERROR_TARGET_NOT_HALTED:
1094 gdb_send_error(connection, EFAULT);
1097 /* This could be that the target reset itself. */
1098 LOG_ERROR("unexpected error %i", retval);
1099 gdb_send_error(connection, EFAULT);
1106 /* We don't have to worry about the default 2 second timeout for GDB packets,
1107 * because GDB breaks up large memory reads into smaller reads.
1109 * 8191 bytes by the looks of it. Why 8191 bytes instead of 8192?????
1111 int gdb_read_memory_packet(connection_t *connection, target_t *target, char *packet, int packet_size)
1120 int retval = ERROR_OK;
1122 /* skip command character */
1125 addr = strtoul(packet, &separator, 16);
1127 if (*separator != ',')
1129 LOG_ERROR("incomplete read memory packet received, dropping connection");
1130 return ERROR_SERVER_REMOTE_CLOSED;
1133 len = strtoul(separator+1, NULL, 16);
1135 buffer = malloc(len);
1137 LOG_DEBUG("addr: 0x%8.8x, len: 0x%8.8x", addr, len);
1139 retval = target_read_buffer(target, addr, len, buffer);
1141 if ((retval == ERROR_TARGET_DATA_ABORT) && (!gdb_report_data_abort))
1143 /* TODO : Here we have to lie and send back all zero's lest stack traces won't work.
1144 * At some point this might be fixed in GDB, in which case this code can be removed.
1146 * OpenOCD developers are acutely aware of this problem, but there is nothing
1147 * gained by involving the user in this problem that hopefully will get resolved
1150 * http://sourceware.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gdb&pr=2395
1152 * For now, the default is to fix up things to make current GDB versions work.
1153 * This can be overwritten using the gdb_report_data_abort <'enable'|'disable'> command.
1155 memset(buffer, 0, len);
1159 if (retval == ERROR_OK)
1161 hex_buffer = malloc(len * 2 + 1);
1164 for (i = 0; i < len; i++)
1167 hex_buffer[2 * i] = DIGITS[(t >> 4) & 0xf];
1168 hex_buffer[2 * i + 1] = DIGITS[t & 0xf];
1171 gdb_put_packet(connection, hex_buffer, len * 2);
1177 retval = gdb_error(connection, retval);
1185 int gdb_write_memory_packet(connection_t *connection, target_t *target, char *packet, int packet_size)
1196 /* skip command character */
1199 addr = strtoul(packet, &separator, 16);
1201 if (*separator != ',')
1203 LOG_ERROR("incomplete write memory packet received, dropping connection");
1204 return ERROR_SERVER_REMOTE_CLOSED;
1207 len = strtoul(separator+1, &separator, 16);
1209 if (*(separator++) != ':')
1211 LOG_ERROR("incomplete write memory packet received, dropping connection");
1212 return ERROR_SERVER_REMOTE_CLOSED;
1215 buffer = malloc(len);
1217 LOG_DEBUG("addr: 0x%8.8x, len: 0x%8.8x", addr, len);
1219 for (i=0; i<len; i++)
1222 sscanf(separator + 2*i, "%2x", &tmp);
1226 retval = target_write_buffer(target, addr, len, buffer);
1228 if (retval == ERROR_OK)
1230 gdb_put_packet(connection, "OK", 2);
1234 retval = gdb_error(connection, retval);
1242 int gdb_write_memory_binary_packet(connection_t *connection, target_t *target, char *packet, int packet_size)
1250 /* skip command character */
1253 addr = strtoul(packet, &separator, 16);
1255 if (*separator != ',')
1257 LOG_ERROR("incomplete write memory binary packet received, dropping connection");
1258 return ERROR_SERVER_REMOTE_CLOSED;
1261 len = strtoul(separator+1, &separator, 16);
1263 if (*(separator++) != ':')
1265 LOG_ERROR("incomplete write memory binary packet received, dropping connection");
1266 return ERROR_SERVER_REMOTE_CLOSED;
1272 LOG_DEBUG("addr: 0x%8.8x, len: 0x%8.8x", addr, len);
1274 retval = target_write_buffer(target, addr, len, (u8*)separator);
1277 if (retval == ERROR_OK)
1279 gdb_put_packet(connection, "OK", 2);
1283 if ((retval = gdb_error(connection, retval)) != ERROR_OK)
1290 int gdb_step_continue_packet(connection_t *connection, target_t *target, char *packet, int packet_size)
1294 int retval=ERROR_OK;
1298 if (packet_size > 1)
1300 packet[packet_size] = 0;
1301 address = strtoul(packet + 1, NULL, 16);
1308 if (packet[0] == 'c')
1310 LOG_DEBUG("continue");
1311 target_handle_event( target, TARGET_EVENT_OLD_pre_resume );
1312 retval=target_resume(target, current, address, 0, 0); /* resume at current address, don't handle breakpoints, not debugging */
1314 else if (packet[0] == 's')
1317 retval=target->type->step(target, current, address, 0); /* step at current or address, don't handle breakpoints */
1322 int gdb_breakpoint_watchpoint_packet(connection_t *connection, target_t *target, char *packet, int packet_size)
1325 enum breakpoint_type bp_type = BKPT_SOFT /* dummy init to avoid warning */;
1326 enum watchpoint_rw wp_type;
1334 type = strtoul(packet + 1, &separator, 16);
1336 if (type == 0) /* memory breakpoint */
1337 bp_type = BKPT_SOFT;
1338 else if (type == 1) /* hardware breakpoint */
1339 bp_type = BKPT_HARD;
1340 else if (type == 2) /* write watchpoint */
1341 wp_type = WPT_WRITE;
1342 else if (type == 3) /* read watchpoint */
1344 else if (type == 4) /* access watchpoint */
1345 wp_type = WPT_ACCESS;
1347 if (gdb_breakpoint_override&&((bp_type==BKPT_SOFT)||(bp_type==BKPT_HARD)))
1349 bp_type=gdb_breakpoint_override_type;
1352 if (*separator != ',')
1354 LOG_ERROR("incomplete breakpoint/watchpoint packet received, dropping connection");
1355 return ERROR_SERVER_REMOTE_CLOSED;
1358 address = strtoul(separator+1, &separator, 16);
1360 if (*separator != ',')
1362 LOG_ERROR("incomplete breakpoint/watchpoint packet received, dropping connection");
1363 return ERROR_SERVER_REMOTE_CLOSED;
1366 size = strtoul(separator+1, &separator, 16);
1372 if (packet[0] == 'Z')
1374 if ((retval = breakpoint_add(target, address, size, bp_type)) != ERROR_OK)
1376 if ((retval = gdb_error(connection, retval)) != ERROR_OK)
1381 gdb_put_packet(connection, "OK", 2);
1386 breakpoint_remove(target, address);
1387 gdb_put_packet(connection, "OK", 2);
1394 if (packet[0] == 'Z')
1396 if ((retval = watchpoint_add(target, address, size, type-2, 0, 0xffffffffu)) != ERROR_OK)
1398 if ((retval = gdb_error(connection, retval)) != ERROR_OK)
1403 gdb_put_packet(connection, "OK", 2);
1408 watchpoint_remove(target, address);
1409 gdb_put_packet(connection, "OK", 2);
1420 /* print out a string and allocate more space as needed, mainly used for XML at this point */
1421 void xml_printf(int *retval, char **xml, int *pos, int *size, const char *fmt, ...)
1423 if (*retval != ERROR_OK)
1431 if ((*xml == NULL) || (!first))
1433 /* start by 0 to exercise all the code paths.
1434 * Need minimum 2 bytes to fit 1 char and 0 terminator. */
1436 *size = *size * 2 + 2;
1438 *xml = realloc(*xml, *size);
1443 *retval = ERROR_SERVER_REMOTE_CLOSED;
1451 ret = vsnprintf(*xml + *pos, *size - *pos, fmt, ap);
1453 if ((ret > 0) && ((ret + 1) < *size - *pos))
1458 /* there was just enough or not enough space, allocate more. */
1463 static int decode_xfer_read(char *buf, char **annex, int *ofs, unsigned int *len)
1467 /* Extract and NUL-terminate the annex. */
1469 while (*buf && *buf != ':')
1475 /* After the read marker and annex, qXfer looks like a
1476 * traditional 'm' packet. */
1478 *ofs = strtoul(buf, &separator, 16);
1480 if (*separator != ',')
1483 *len = strtoul(separator+1, NULL, 16);
1488 int gdb_calc_blocksize(flash_bank_t *bank)
1491 int block_size = 0xffffffff;
1493 /* loop through all sectors and return smallest sector size */
1495 for (i = 0; i < bank->num_sectors; i++)
1497 if (bank->sectors[i].size < block_size)
1498 block_size = bank->sectors[i].size;
1504 static int compare_bank (const void * a, const void * b)
1506 flash_bank_t *b1, *b2;
1507 b1=*((flash_bank_t **)a);
1508 b2=*((flash_bank_t **)b);
1510 if (b1->base==b2->base)
1513 } else if (b1->base>b2->base)
1522 int gdb_query_packet(connection_t *connection, target_t *target, char *packet, int packet_size)
1524 command_context_t *cmd_ctx = connection->cmd_ctx;
1525 gdb_connection_t *gdb_connection = connection->priv;
1527 if (strstr(packet, "qRcmd,"))
1529 if (packet_size > 6)
1533 cmd = malloc((packet_size - 6)/2 + 1);
1534 for (i=0; i < (packet_size - 6)/2; i++)
1537 sscanf(packet + 6 + 2*i, "%2x", &tmp);
1540 cmd[(packet_size - 6)/2] = 0x0;
1542 /* We want to print all debug output to GDB connection */
1543 log_add_callback(gdb_log_callback, connection);
1544 target_call_timer_callbacks_now();
1545 command_run_line(cmd_ctx, cmd);
1546 target_call_timer_callbacks_now();
1547 log_remove_callback(gdb_log_callback, connection);
1550 gdb_put_packet(connection, "OK", 2);
1553 else if (strstr(packet, "qCRC:"))
1555 if (packet_size > 5)
1564 /* skip command character */
1567 addr = strtoul(packet, &separator, 16);
1569 if (*separator != ',')
1571 LOG_ERROR("incomplete read memory packet received, dropping connection");
1572 return ERROR_SERVER_REMOTE_CLOSED;
1575 len = strtoul(separator + 1, NULL, 16);
1577 retval = target_checksum_memory(target, addr, len, &checksum);
1579 if (retval == ERROR_OK)
1581 snprintf(gdb_reply, 10, "C%8.8x", checksum);
1582 gdb_put_packet(connection, gdb_reply, 9);
1586 if ((retval = gdb_error(connection, retval)) != ERROR_OK)
1593 else if (strstr(packet, "qSupported"))
1595 /* we currently support packet size and qXfer:memory-map:read (if enabled)
1596 * disable qXfer:features:read for the moment */
1597 int retval = ERROR_OK;
1598 char *buffer = NULL;
1602 xml_printf(&retval, &buffer, &pos, &size,
1603 "PacketSize=%x;qXfer:memory-map:read%c;qXfer:features:read-;QStartNoAckMode+",
1604 (GDB_BUFFER_SIZE - 1), ((gdb_use_memory_map == 1)&&(flash_get_bank_count()>0)) ? '+' : '-');
1606 if (retval != ERROR_OK)
1608 gdb_send_error(connection, 01);
1612 gdb_put_packet(connection, buffer, strlen(buffer));
1617 else if (strstr(packet, "qXfer:memory-map:read::")&&(flash_get_bank_count()>0))
1619 /* We get away with only specifying flash here. Regions that are not
1620 * specified are treated as if we provided no memory map(if not we
1621 * could detect the holes and mark them as RAM).
1622 * Normally we only execute this code once, but no big deal if we
1623 * have to regenerate it a couple of times. */
1629 int retval = ERROR_OK;
1636 /* skip command character */
1639 offset = strtoul(packet, &separator, 16);
1640 length = strtoul(separator + 1, &separator, 16);
1642 xml_printf(&retval, &xml, &pos, &size, "<memory-map>\n");
1645 sort banks in ascending order, we need to make non-flash memory be ram(or rather
1646 read/write) by default for GDB.
1647 GDB does not have a concept of non-cacheable read/write memory.
1649 flash_bank_t **banks=malloc(sizeof(flash_bank_t *)*flash_get_bank_count());
1652 for (i=0; i<flash_get_bank_count(); i++)
1654 p = get_flash_bank_by_num(i);
1658 retval = ERROR_FAIL;
1659 gdb_send_error(connection, retval);
1665 qsort(banks, flash_get_bank_count(), sizeof(flash_bank_t *), compare_bank);
1668 for (i=0; i<flash_get_bank_count(); i++)
1672 if (ram_start<p->base)
1674 xml_printf(&retval, &xml, &pos, &size, "<memory type=\"ram\" start=\"0x%x\" length=\"0x%x\"/>\n",
1675 ram_start, p->base-ram_start);
1678 /* if device has uneven sector sizes, eg. str7, lpc
1679 * we pass the smallest sector size to gdb memory map */
1680 blocksize = gdb_calc_blocksize(p);
1682 xml_printf(&retval, &xml, &pos, &size, "<memory type=\"flash\" start=\"0x%x\" length=\"0x%x\">\n" \
1683 "<property name=\"blocksize\">0x%x</property>\n" \
1685 p->base, p->size, blocksize);
1686 ram_start=p->base+p->size;
1690 xml_printf(&retval, &xml, &pos, &size, "<memory type=\"ram\" start=\"0x%x\" length=\"0x%x\"/>\n",
1691 ram_start, 0-ram_start);
1694 /* a flash chip could be at the very end of the 32 bit address space, in which case
1695 ram_start will be precisely 0 */
1701 xml_printf(&retval, &xml, &pos, &size, "</memory-map>\n");
1703 if (retval != ERROR_OK)
1705 gdb_send_error(connection, retval);
1709 if (offset + length > pos)
1711 length = pos - offset;
1714 char *t = malloc(length + 1);
1716 memcpy(t + 1, xml + offset, length);
1717 gdb_put_packet(connection, t, length + 1);
1723 else if (strstr(packet, "qXfer:features:read:"))
1728 int retval = ERROR_OK;
1731 unsigned int length;
1734 /* skip command character */
1737 if (decode_xfer_read(packet, &annex, &offset, &length) < 0)
1739 gdb_send_error(connection, 01);
1743 if (strcmp(annex, "target.xml") != 0)
1745 gdb_send_error(connection, 01);
1749 xml_printf(&retval, &xml, &pos, &size, \
1750 "l<target version=\"1.0\">\n<architecture>arm</architecture>\n</target>\n");
1752 if (retval != ERROR_OK)
1754 gdb_send_error(connection, retval);
1758 gdb_put_packet(connection, xml, strlen(xml));
1763 else if (strstr(packet, "QStartNoAckMode"))
1765 gdb_connection->noack_mode = 1;
1766 gdb_put_packet(connection, "OK", 2);
1770 gdb_put_packet(connection, "", 0);
1774 int gdb_v_packet(connection_t *connection, target_t *target, char *packet, int packet_size)
1776 gdb_connection_t *gdb_connection = connection->priv;
1777 gdb_service_t *gdb_service = connection->service->priv;
1780 /* if flash programming disabled - send a empty reply */
1782 if (gdb_flash_program == 0)
1784 gdb_put_packet(connection, "", 0);
1788 if (strstr(packet, "vFlashErase:"))
1791 unsigned long length;
1793 char *parse = packet + 12;
1796 LOG_ERROR("incomplete vFlashErase packet received, dropping connection");
1797 return ERROR_SERVER_REMOTE_CLOSED;
1800 addr = strtoul(parse, &parse, 16);
1802 if (*(parse++) != ',' || *parse == '\0')
1804 LOG_ERROR("incomplete vFlashErase packet received, dropping connection");
1805 return ERROR_SERVER_REMOTE_CLOSED;
1808 length = strtoul(parse, &parse, 16);
1812 LOG_ERROR("incomplete vFlashErase packet received, dropping connection");
1813 return ERROR_SERVER_REMOTE_CLOSED;
1816 /* assume all sectors need erasing - stops any problems
1817 * when flash_write is called multiple times */
1820 /* perform any target specific operations before the erase */
1821 target_call_event_callbacks(gdb_service->target, TARGET_EVENT_GDB_FLASH_ERASE_START);
1822 result = flash_erase_address_range(gdb_service->target, addr, length );
1823 target_call_event_callbacks(gdb_service->target, TARGET_EVENT_GDB_FLASH_ERASE_END);
1826 if (result != ERROR_OK)
1828 /* GDB doesn't evaluate the actual error number returned,
1829 * treat a failed erase as an I/O error
1831 gdb_send_error(connection, EIO);
1832 LOG_ERROR("flash_erase returned %i", result);
1835 gdb_put_packet(connection, "OK", 2);
1840 if (strstr(packet, "vFlashWrite:"))
1844 unsigned long length;
1845 char *parse = packet + 12;
1849 LOG_ERROR("incomplete vFlashErase packet received, dropping connection");
1850 return ERROR_SERVER_REMOTE_CLOSED;
1852 addr = strtoul(parse, &parse, 16);
1853 if (*(parse++) != ':')
1855 LOG_ERROR("incomplete vFlashErase packet received, dropping connection");
1856 return ERROR_SERVER_REMOTE_CLOSED;
1858 length = packet_size - (parse - packet);
1860 /* create a new image if there isn't already one */
1861 if (gdb_connection->vflash_image == NULL)
1863 gdb_connection->vflash_image = malloc(sizeof(image_t));
1864 image_open(gdb_connection->vflash_image, "", "build");
1867 /* create new section with content from packet buffer */
1868 if((retval = image_add_section(gdb_connection->vflash_image, addr, length, 0x0, (u8*)parse)) != ERROR_OK)
1873 gdb_put_packet(connection, "OK", 2);
1878 if (!strcmp(packet, "vFlashDone"))
1882 /* process the flashing buffer. No need to erase as GDB
1883 * always issues a vFlashErase first. */
1884 target_call_event_callbacks(gdb_service->target, TARGET_EVENT_GDB_FLASH_WRITE_START);
1885 result = flash_write(gdb_service->target, gdb_connection->vflash_image, &written, 0);
1886 target_call_event_callbacks(gdb_service->target, TARGET_EVENT_GDB_FLASH_WRITE_END);
1887 if ( result != ERROR_OK)
1889 if (result == ERROR_FLASH_DST_OUT_OF_BANK)
1890 gdb_put_packet(connection, "E.memtype", 9);
1892 gdb_send_error(connection, EIO);
1896 LOG_DEBUG("wrote %u bytes from vFlash image to flash", written);
1897 gdb_put_packet(connection, "OK", 2);
1900 image_close(gdb_connection->vflash_image);
1901 free(gdb_connection->vflash_image);
1902 gdb_connection->vflash_image = NULL;
1907 gdb_put_packet(connection, "", 0);
1911 int gdb_detach(connection_t *connection, target_t *target)
1914 switch( detach_mode )
1916 case GDB_DETACH_RESUME:
1917 target_handle_event( target, TARGET_EVENT_OLD_pre_resume );
1918 target_resume(target, 1, 0, 1, 0);
1921 case GDB_DETACH_RESET:
1922 /* FIX?? make this configurable?? */
1923 target_process_reset(connection->cmd_ctx, RESET_HALT);
1926 case GDB_DETACH_HALT:
1927 target_halt(target);
1930 case GDB_DETACH_NOTHING:
1934 gdb_put_packet(connection, "OK", 2);
1938 static void gdb_log_callback(void *priv, const char *file, int line,
1939 const char *function, const char *string)
1941 connection_t *connection = priv;
1942 gdb_connection_t *gdb_con = connection->priv;
1946 /* do not reply this using the O packet */
1950 gdb_output_con(connection, string);
1953 /* Do not allocate this on the stack */
1954 char gdb_packet_buffer[GDB_BUFFER_SIZE];
1956 static void gdb_sig_halted(connection_t *connection)
1959 snprintf(sig_reply, 4, "T%2.2x", 2);
1960 gdb_put_packet(connection, sig_reply, 3);
1964 int gdb_input_inner(connection_t *connection)
1966 gdb_service_t *gdb_service = connection->service->priv;
1967 target_t *target = gdb_service->target;
1968 char *packet=gdb_packet_buffer;
1971 gdb_connection_t *gdb_con = connection->priv;
1972 static int extended_protocol = 0;
1974 /* drain input buffer */
1977 packet_size = GDB_BUFFER_SIZE-1;
1978 if ((retval = gdb_get_packet(connection, packet, &packet_size)) != ERROR_OK)
1983 /* terminate with zero */
1984 packet[packet_size] = 0;
1986 if( LOG_LEVEL_IS( LOG_LVL_DEBUG ) ){
1987 if( packet[0] == 'X' ){
1988 // binary packets spew junk into the debug log stream
1991 for( x = 0 ; (x < 49) && (packet[x] != ':') ; x++ ){
1995 LOG_DEBUG("received packet: '%s:<binary-data>'", buf );
1997 LOG_DEBUG("received packet: '%s'", packet );
2001 if (packet_size > 0)
2007 /* Hct... -- set thread
2008 * we don't have threads, send empty reply */
2009 gdb_put_packet(connection, NULL, 0);
2013 retval = gdb_query_packet(connection, target, packet, packet_size);
2016 retval = gdb_get_registers_packet(connection, target, packet, packet_size);
2019 retval = gdb_set_registers_packet(connection, target, packet, packet_size);
2022 retval = gdb_get_register_packet(connection, target, packet, packet_size);
2025 retval = gdb_set_register_packet(connection, target, packet, packet_size);
2028 retval = gdb_read_memory_packet(connection, target, packet, packet_size);
2031 retval = gdb_write_memory_packet(connection, target, packet, packet_size);
2035 retval = gdb_breakpoint_watchpoint_packet(connection, target, packet, packet_size);
2038 gdb_last_signal_packet(connection, target, packet, packet_size);
2043 if (target->state != TARGET_HALTED)
2045 /* If the target isn't in the halted state, then we can't
2046 * step/continue. This might be early setup, etc.
2048 gdb_sig_halted(connection);
2051 /* We're running/stepping, in which case we can
2052 * forward log output until the target is halted
2054 gdb_connection_t *gdb_con = connection->priv;
2055 gdb_con->frontend_state = TARGET_RUNNING;
2056 log_add_callback(gdb_log_callback, connection);
2057 int retval=gdb_step_continue_packet(connection, target, packet, packet_size);
2058 if (retval!=ERROR_OK)
2060 /* we'll never receive a halted condition... issue a false one.. */
2061 gdb_frontend_halted(target, connection);
2067 retval = gdb_v_packet(connection, target, packet, packet_size);
2070 retval = gdb_detach(connection, target);
2071 extended_protocol = 0;
2074 if ((retval = gdb_write_memory_binary_packet(connection, target, packet, packet_size)) != ERROR_OK)
2078 if (extended_protocol != 0)
2080 gdb_put_packet(connection, "OK", 2);
2081 return ERROR_SERVER_REMOTE_CLOSED;
2083 /* handle extended remote protocol */
2084 extended_protocol = 1;
2085 gdb_put_packet(connection, "OK", 2);
2088 /* handle extended restart packet */
2089 breakpoint_clear_target(gdb_service->target);
2090 watchpoint_clear_target(gdb_service->target);
2091 command_run_linef(connection->cmd_ctx, "ocd_gdb_restart %d", get_num_by_target(target));
2094 /* ignore unkown packets */
2095 LOG_DEBUG("ignoring 0x%2.2x packet", packet[0]);
2096 gdb_put_packet(connection, NULL, 0);
2100 /* if a packet handler returned an error, exit input loop */
2101 if (retval != ERROR_OK)
2105 if (gdb_con->ctrl_c)
2107 if (target->state == TARGET_RUNNING)
2109 target_halt(target);
2110 gdb_con->ctrl_c = 0;
2114 } while (gdb_con->buf_cnt > 0);
2119 int gdb_input(connection_t *connection)
2121 int retval = gdb_input_inner(connection);
2122 gdb_connection_t *gdb_con = connection->priv;
2123 if (retval == ERROR_SERVER_REMOTE_CLOSED)
2126 /* logging does not propagate the error, yet can set th gdb_con->closed flag */
2127 if (gdb_con->closed)
2128 return ERROR_SERVER_REMOTE_CLOSED;
2130 /* we'll recover from any other errors(e.g. temporary timeouts, etc.) */
2136 gdb_service_t *gdb_service;
2137 target_t *target = all_targets;
2141 LOG_WARNING("no gdb ports allocated as no target has been specified");
2147 LOG_WARNING("no gdb port specified, using default port 3333");
2153 char service_name[8];
2155 snprintf(service_name, 8, "gdb-%2.2i", target->target_number);
2157 gdb_service = malloc(sizeof(gdb_service_t));
2158 gdb_service->target = target;
2160 add_service("gdb", CONNECTION_GDB,
2161 gdb_port + target->target_number,
2162 1, gdb_new_connection, gdb_input,
2163 gdb_connection_closed,
2166 LOG_DEBUG("gdb service for target %s at port %i",
2168 gdb_port + target->target_number);
2170 target = target->next;
2176 /* daemon configuration command gdb_port */
2177 int handle_gdb_port_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2181 command_print(cmd_ctx, "gdb_port: %ld", gdb_port);
2185 /* only if the port wasn't overwritten by cmdline */
2187 gdb_port = strtoul(args[0], NULL, 0);
2192 int handle_gdb_detach_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2196 if (strcmp(args[0], "resume") == 0)
2198 detach_mode = GDB_DETACH_RESUME;
2201 else if (strcmp(args[0], "reset") == 0)
2203 detach_mode = GDB_DETACH_RESET;
2206 else if (strcmp(args[0], "halt") == 0)
2208 detach_mode = GDB_DETACH_HALT;
2211 else if (strcmp(args[0], "nothing") == 0)
2213 detach_mode = GDB_DETACH_NOTHING;
2217 LOG_WARNING("invalid gdb_detach configuration directive: %s", args[0]);
2220 return ERROR_COMMAND_SYNTAX_ERROR;
2223 int handle_gdb_memory_map_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2227 if (strcmp(args[0], "enable") == 0)
2229 gdb_use_memory_map = 1;
2232 else if (strcmp(args[0], "disable") == 0)
2234 gdb_use_memory_map = 0;
2238 LOG_WARNING("invalid gdb_memory_map configuration directive %s", args[0]);
2241 return ERROR_COMMAND_SYNTAX_ERROR;
2244 int handle_gdb_flash_program_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2248 if (strcmp(args[0], "enable") == 0)
2250 gdb_flash_program = 1;
2253 else if (strcmp(args[0], "disable") == 0)
2255 gdb_flash_program = 0;
2259 LOG_WARNING("invalid gdb_flash_program configuration directive: %s", args[0]);
2262 return ERROR_COMMAND_SYNTAX_ERROR;
2265 int handle_gdb_report_data_abort_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2269 if (strcmp(args[0], "enable") == 0)
2271 gdb_report_data_abort = 1;
2274 else if (strcmp(args[0], "disable") == 0)
2276 gdb_report_data_abort = 0;
2280 LOG_WARNING("invalid gdb_report_data_abort configuration directive: %s", args[0]);
2283 return ERROR_COMMAND_SYNTAX_ERROR;
2286 /* gdb_breakpoint_override */
2287 int handle_gdb_breakpoint_override_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2294 gdb_breakpoint_override = 1;
2295 if (strcmp(args[0], "hard")==0)
2297 gdb_breakpoint_override_type=BKPT_HARD;
2298 } else if (strcmp(args[0], "soft")==0)
2300 gdb_breakpoint_override_type=BKPT_SOFT;
2301 } else if (strcmp(args[0], "disable") == 0)
2303 gdb_breakpoint_override = 0;
2307 return ERROR_COMMAND_SYNTAX_ERROR;
2309 if (gdb_breakpoint_override)
2311 LOG_USER("force %s breakpoints", (gdb_breakpoint_override_type==BKPT_HARD)?"hard":"soft");
2314 LOG_USER("breakpoint type is not overriden");
2321 int gdb_register_commands(command_context_t *command_context)
2323 register_command(command_context, NULL, "gdb_port", handle_gdb_port_command,
2324 COMMAND_CONFIG, "daemon configuration command gdb_port");
2325 register_command(command_context, NULL, "gdb_detach", handle_gdb_detach_command,
2326 COMMAND_CONFIG, "");
2327 register_command(command_context, NULL, "gdb_memory_map", handle_gdb_memory_map_command,
2328 COMMAND_CONFIG, "enable or disable memory map");
2329 register_command(command_context, NULL, "gdb_flash_program", handle_gdb_flash_program_command,
2330 COMMAND_CONFIG, "enable or disable flash program");
2331 register_command(command_context, NULL, "gdb_report_data_abort", handle_gdb_report_data_abort_command,
2332 COMMAND_CONFIG, "enable or disable report data");
2333 register_command(command_context, NULL, "gdb_breakpoint_override", handle_gdb_breakpoint_override_command,
2334 COMMAND_EXEC, "hard/soft/disabled - force breakpoint type for gdb 'break' commands."
2335 "The raison d'etre for this option is to support GDB GUI's without "
2336 "a hard/soft breakpoint concept where the default OpenOCD behaviour "
2337 "is not sufficient");