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)
675 /* stop forwarding log packets! */
676 log_remove_callback(gdb_log_callback, connection);
678 if (gdb_connection->ctrl_c)
681 gdb_connection->ctrl_c = 0;
685 signal = gdb_last_signal(target);
688 snprintf(sig_reply, 4, "T%2.2x", signal);
689 gdb_put_packet(connection, sig_reply, 3);
690 gdb_connection->frontend_state = TARGET_HALTED;
694 int gdb_target_callback_event_handler(struct target_s *target, enum target_event event, void *priv)
697 connection_t *connection = priv;
699 target_handle_event( target, event );
702 case TARGET_EVENT_EARLY_HALTED:
703 gdb_frontend_halted(target, connection);
705 case TARGET_EVENT_HALTED:
706 target_call_event_callbacks(target, TARGET_EVENT_GDB_END);
708 case TARGET_EVENT_GDB_FLASH_ERASE_START:
709 target_handle_event( target, TARGET_EVENT_OLD_gdb_program_config );
710 if((retval = jtag_execute_queue()) != ERROR_OK)
722 int gdb_new_connection(connection_t *connection)
724 gdb_connection_t *gdb_connection = malloc(sizeof(gdb_connection_t));
725 gdb_service_t *gdb_service = connection->service->priv;
729 connection->priv = gdb_connection;
731 /* initialize gdb connection information */
732 gdb_connection->buf_p = gdb_connection->buffer;
733 gdb_connection->buf_cnt = 0;
734 gdb_connection->ctrl_c = 0;
735 gdb_connection->frontend_state = TARGET_HALTED;
736 gdb_connection->vflash_image = NULL;
737 gdb_connection->closed = 0;
738 gdb_connection->busy = 0;
739 gdb_connection->noack_mode = 0;
741 /* send ACK to GDB for debug request */
742 gdb_write(connection, "+", 1);
744 /* output goes through gdb connection */
745 command_set_output_handler(connection->cmd_ctx, gdb_output, connection);
747 /* we must remove all breakpoints registered to the target as a previous
748 * GDB session could leave dangling breakpoints if e.g. communication
751 breakpoint_clear_target(gdb_service->target);
752 watchpoint_clear_target(gdb_service->target);
754 /* register callback to be informed about target events */
755 target_register_event_callback(gdb_target_callback_event_handler, connection);
757 /* a gdb session just attached, try to put the target in halt mode.
761 * If the halt fails(e.g. target needs a reset, JTAG communication not
762 * working, etc.), then the GDB connect will succeed as
763 * the get_gdb_reg_list() will lie and return a register list with
766 * This allows GDB monitor commands to be run from a GDB init script to
767 * initialize the target
769 * Also, since the halt() is asynchronous target connect will be
770 * instantaneous and thus avoiding annoying timeout problems during
773 target_halt(gdb_service->target);
774 /* FIX!!!! could extended-remote work better here?
776 * wait a tiny bit for halted state or we just continue. The
777 * GDB register packet will then contain garbage
779 target_wait_state(gdb_service->target, TARGET_HALTED, 500);
781 /* remove the initial ACK from the incoming buffer */
782 if ((retval = gdb_get_char(connection, &initial_ack)) != ERROR_OK)
785 /* FIX!!!??? would we actually ever receive a + here???
788 if (initial_ack != '+')
789 gdb_putback_char(connection, initial_ack);
790 target_call_event_callbacks(gdb_service->target, TARGET_EVENT_GDB_ATTACH );
794 int gdb_connection_closed(connection_t *connection)
796 gdb_service_t *gdb_service = connection->service->priv;
797 gdb_connection_t *gdb_connection = connection->priv;
799 /* see if an image built with vFlash commands is left */
800 if (gdb_connection->vflash_image)
802 image_close(gdb_connection->vflash_image);
803 free(gdb_connection->vflash_image);
804 gdb_connection->vflash_image = NULL;
807 /* if this connection registered a debug-message receiver delete it */
808 delete_debug_msg_receiver(connection->cmd_ctx, gdb_service->target);
810 if (connection->priv)
812 free(connection->priv);
813 connection->priv = NULL;
817 LOG_ERROR("BUG: connection->priv == NULL");
820 target_unregister_event_callback(gdb_target_callback_event_handler, connection);
821 target_call_event_callbacks(gdb_service->target, TARGET_EVENT_GDB_END);
822 log_remove_callback(gdb_log_callback, connection);
824 target_call_event_callbacks(gdb_service->target, TARGET_EVENT_GDB_DETACH );
829 void gdb_send_error(connection_t *connection, u8 the_error)
832 snprintf(err, 4, "E%2.2X", the_error );
833 gdb_put_packet(connection, err, 3);
836 int gdb_last_signal_packet(connection_t *connection, target_t *target, char* packet, int packet_size)
841 signal = gdb_last_signal(target);
843 snprintf(sig_reply, 4, "S%2.2x", signal);
844 gdb_put_packet(connection, sig_reply, 3);
849 static int gdb_reg_pos(target_t *target, int pos, int len)
851 if (target->endianness == TARGET_LITTLE_ENDIAN)
854 return len - 1 - pos;
857 /* Convert register to string of bytes. NB! The # of bits in the
858 * register might be non-divisible by 8(a byte), in which
859 * case an entire byte is shown.
861 * NB! the format on the wire is the target endianess
863 * The format of reg->value is little endian
866 void gdb_str_to_target(target_t *target, char *tstr, reg_t *reg)
873 buf_len = CEIL(reg->size, 8);
875 for (i = 0; i < buf_len; i++)
877 int j = gdb_reg_pos(target, i, buf_len);
878 tstr[i*2] = DIGITS[(buf[j]>>4) & 0xf];
879 tstr[i*2+1] = DIGITS[buf[j]&0xf];
883 static int hextoint(char c)
894 LOG_ERROR("BUG: invalid register value %08x", c);
898 /* copy over in register buffer */
899 void gdb_target_to_reg(target_t *target, char *tstr, int str_len, u8 *bin)
903 LOG_ERROR("BUG: gdb value with uneven number of characters encountered");
908 for (i = 0; i < str_len; i+=2)
910 u8 t = hextoint(tstr[i])<<4;
911 t |= hextoint(tstr[i+1]);
913 int j = gdb_reg_pos(target, i/2, str_len/2);
918 int gdb_get_registers_packet(connection_t *connection, target_t *target, char* packet, int packet_size)
923 int reg_packet_size = 0;
928 #ifdef _DEBUG_GDB_IO_
932 if ((retval = target->type->get_gdb_reg_list(target, ®_list, ®_list_size)) != ERROR_OK)
934 return gdb_error(connection, retval);
937 for (i = 0; i < reg_list_size; i++)
939 reg_packet_size += reg_list[i]->size;
942 reg_packet = malloc(CEIL(reg_packet_size, 8) * 2);
943 reg_packet_p = reg_packet;
945 for (i = 0; i < reg_list_size; i++)
947 gdb_str_to_target(target, reg_packet_p, reg_list[i]);
948 reg_packet_p += CEIL(reg_list[i]->size, 8) * 2;
951 #ifdef _DEBUG_GDB_IO_
954 reg_packet_p = strndup(reg_packet, CEIL(reg_packet_size, 8) * 2);
955 LOG_DEBUG("reg_packet: %s", reg_packet_p);
960 gdb_put_packet(connection, reg_packet, CEIL(reg_packet_size, 8) * 2);
968 int gdb_set_registers_packet(connection_t *connection, target_t *target, char *packet, int packet_size)
976 #ifdef _DEBUG_GDB_IO_
980 /* skip command character */
986 LOG_WARNING("GDB set_registers packet with uneven characters received, dropping connection");
987 return ERROR_SERVER_REMOTE_CLOSED;
990 if ((retval = target->type->get_gdb_reg_list(target, ®_list, ®_list_size)) != ERROR_OK)
992 return gdb_error(connection, retval);
996 for (i = 0; i < reg_list_size; i++)
999 int chars = (CEIL(reg_list[i]->size, 8) * 2);
1001 if (packet_p + chars > packet + packet_size)
1003 LOG_ERROR("BUG: register packet is too small for registers");
1006 reg_arch_type_t *arch_type;
1007 bin_buf = malloc(CEIL(reg_list[i]->size, 8));
1008 gdb_target_to_reg(target, packet_p, chars, bin_buf);
1010 /* get register arch_type, and call set method */
1011 arch_type = register_get_arch_type(reg_list[i]->arch_type);
1013 arch_type->set(reg_list[i], bin_buf);
1015 /* advance packet pointer */
1022 /* free reg_t *reg_list[] array allocated by get_gdb_reg_list */
1025 gdb_put_packet(connection, "OK", 2);
1030 int gdb_get_register_packet(connection_t *connection, target_t *target, char *packet, int packet_size)
1033 int reg_num = strtoul(packet + 1, NULL, 16);
1038 #ifdef _DEBUG_GDB_IO_
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");
1053 reg_packet = malloc(CEIL(reg_list[reg_num]->size, 8) * 2);
1055 gdb_str_to_target(target, reg_packet, reg_list[reg_num]);
1057 gdb_put_packet(connection, reg_packet, CEIL(reg_list[reg_num]->size, 8) * 2);
1065 int gdb_set_register_packet(connection_t *connection, target_t *target, char *packet, int packet_size)
1069 int reg_num = strtoul(packet + 1, &separator, 16);
1073 reg_arch_type_t *arch_type;
1077 if ((retval = target->type->get_gdb_reg_list(target, ®_list, ®_list_size)) != ERROR_OK)
1079 return gdb_error(connection, retval);
1082 if (reg_list_size < reg_num)
1084 LOG_ERROR("gdb requested a non-existing register");
1085 return ERROR_SERVER_REMOTE_CLOSED;
1088 if (*separator != '=')
1090 LOG_ERROR("GDB 'set register packet', but no '=' following the register number");
1091 return ERROR_SERVER_REMOTE_CLOSED;
1094 /* convert from GDB-string (target-endian) to hex-string (big-endian) */
1095 bin_buf = malloc(CEIL(reg_list[reg_num]->size, 8));
1096 int chars = (CEIL(reg_list[reg_num]->size, 8) * 2);
1098 /* fix!!! add some sanity checks on packet size here */
1100 gdb_target_to_reg(target, separator + 1, chars, bin_buf);
1102 /* get register arch_type, and call set method */
1103 arch_type = register_get_arch_type(reg_list[reg_num]->arch_type);
1104 arch_type->set(reg_list[reg_num], bin_buf);
1106 gdb_put_packet(connection, "OK", 2);
1114 int gdb_error(connection_t *connection, int retval)
1118 case ERROR_TARGET_DATA_ABORT:
1119 gdb_send_error(connection, EIO);
1121 case ERROR_TARGET_TRANSLATION_FAULT:
1122 gdb_send_error(connection, EFAULT);
1124 case ERROR_TARGET_UNALIGNED_ACCESS:
1125 gdb_send_error(connection, EFAULT);
1127 case ERROR_TARGET_NOT_HALTED:
1128 gdb_send_error(connection, EFAULT);
1131 /* This could be that the target reset itself. */
1132 LOG_ERROR("unexpected error %i", retval);
1133 gdb_send_error(connection, EFAULT);
1140 /* We don't have to worry about the default 2 second timeout for GDB packets,
1141 * because GDB breaks up large memory reads into smaller reads.
1143 * 8191 bytes by the looks of it. Why 8191 bytes instead of 8192?????
1145 int gdb_read_memory_packet(connection_t *connection, target_t *target, char *packet, int packet_size)
1154 int retval = ERROR_OK;
1156 /* skip command character */
1159 addr = strtoul(packet, &separator, 16);
1161 if (*separator != ',')
1163 LOG_ERROR("incomplete read memory packet received, dropping connection");
1164 return ERROR_SERVER_REMOTE_CLOSED;
1167 len = strtoul(separator+1, NULL, 16);
1169 buffer = malloc(len);
1171 LOG_DEBUG("addr: 0x%8.8x, len: 0x%8.8x", addr, len);
1173 retval = target_read_buffer(target, addr, len, buffer);
1175 if ((retval!=ERROR_OK)&&!gdb_report_data_abort)
1177 /* TODO : Here we have to lie and send back all zero's lest stack traces won't work.
1178 * At some point this might be fixed in GDB, in which case this code can be removed.
1180 * OpenOCD developers are acutely aware of this problem, but there is nothing
1181 * gained by involving the user in this problem that hopefully will get resolved
1184 * http://sourceware.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gdb&pr=2395
1186 * For now, the default is to fix up things to make current GDB versions work.
1187 * This can be overwritten using the gdb_report_data_abort <'enable'|'disable'> command.
1189 memset(buffer, 0, len);
1193 if (retval == ERROR_OK)
1195 hex_buffer = malloc(len * 2 + 1);
1198 for (i = 0; i < len; i++)
1201 hex_buffer[2 * i] = DIGITS[(t >> 4) & 0xf];
1202 hex_buffer[2 * i + 1] = DIGITS[t & 0xf];
1205 gdb_put_packet(connection, hex_buffer, len * 2);
1211 retval = gdb_error(connection, retval);
1219 int gdb_write_memory_packet(connection_t *connection, target_t *target, char *packet, int packet_size)
1230 /* skip command character */
1233 addr = strtoul(packet, &separator, 16);
1235 if (*separator != ',')
1237 LOG_ERROR("incomplete write memory packet received, dropping connection");
1238 return ERROR_SERVER_REMOTE_CLOSED;
1241 len = strtoul(separator+1, &separator, 16);
1243 if (*(separator++) != ':')
1245 LOG_ERROR("incomplete write memory packet received, dropping connection");
1246 return ERROR_SERVER_REMOTE_CLOSED;
1249 buffer = malloc(len);
1251 LOG_DEBUG("addr: 0x%8.8x, len: 0x%8.8x", addr, len);
1253 for (i=0; i<len; i++)
1256 sscanf(separator + 2*i, "%2x", &tmp);
1260 retval = target_write_buffer(target, addr, len, buffer);
1262 if (retval == ERROR_OK)
1264 gdb_put_packet(connection, "OK", 2);
1268 retval = gdb_error(connection, retval);
1276 int gdb_write_memory_binary_packet(connection_t *connection, target_t *target, char *packet, int packet_size)
1284 /* skip command character */
1287 addr = strtoul(packet, &separator, 16);
1289 if (*separator != ',')
1291 LOG_ERROR("incomplete write memory binary packet received, dropping connection");
1292 return ERROR_SERVER_REMOTE_CLOSED;
1295 len = strtoul(separator+1, &separator, 16);
1297 if (*(separator++) != ':')
1299 LOG_ERROR("incomplete write memory binary packet received, dropping connection");
1300 return ERROR_SERVER_REMOTE_CLOSED;
1306 LOG_DEBUG("addr: 0x%8.8x, len: 0x%8.8x", addr, len);
1308 retval = target_write_buffer(target, addr, len, (u8*)separator);
1311 if (retval == ERROR_OK)
1313 gdb_put_packet(connection, "OK", 2);
1317 if ((retval = gdb_error(connection, retval)) != ERROR_OK)
1324 int gdb_step_continue_packet(connection_t *connection, target_t *target, char *packet, int packet_size)
1328 int retval=ERROR_OK;
1332 if (packet_size > 1)
1334 packet[packet_size] = 0;
1335 address = strtoul(packet + 1, NULL, 16);
1342 if (packet[0] == 'c')
1344 LOG_DEBUG("continue");
1345 target_handle_event( target, TARGET_EVENT_OLD_pre_resume );
1346 retval=target_resume(target, current, address, 0, 0); /* resume at current address, don't handle breakpoints, not debugging */
1348 else if (packet[0] == 's')
1351 retval=target->type->step(target, current, address, 0); /* step at current or address, don't handle breakpoints */
1356 int gdb_breakpoint_watchpoint_packet(connection_t *connection, target_t *target, char *packet, int packet_size)
1359 enum breakpoint_type bp_type = BKPT_SOFT /* dummy init to avoid warning */;
1360 enum watchpoint_rw wp_type;
1368 type = strtoul(packet + 1, &separator, 16);
1370 if (type == 0) /* memory breakpoint */
1371 bp_type = BKPT_SOFT;
1372 else if (type == 1) /* hardware breakpoint */
1373 bp_type = BKPT_HARD;
1374 else if (type == 2) /* write watchpoint */
1375 wp_type = WPT_WRITE;
1376 else if (type == 3) /* read watchpoint */
1378 else if (type == 4) /* access watchpoint */
1379 wp_type = WPT_ACCESS;
1381 if (gdb_breakpoint_override&&((bp_type==BKPT_SOFT)||(bp_type==BKPT_HARD)))
1383 bp_type=gdb_breakpoint_override_type;
1386 if (*separator != ',')
1388 LOG_ERROR("incomplete breakpoint/watchpoint packet received, dropping connection");
1389 return ERROR_SERVER_REMOTE_CLOSED;
1392 address = strtoul(separator+1, &separator, 16);
1394 if (*separator != ',')
1396 LOG_ERROR("incomplete breakpoint/watchpoint packet received, dropping connection");
1397 return ERROR_SERVER_REMOTE_CLOSED;
1400 size = strtoul(separator+1, &separator, 16);
1406 if (packet[0] == 'Z')
1408 if ((retval = breakpoint_add(target, address, size, bp_type)) != ERROR_OK)
1410 if ((retval = gdb_error(connection, retval)) != ERROR_OK)
1415 gdb_put_packet(connection, "OK", 2);
1420 breakpoint_remove(target, address);
1421 gdb_put_packet(connection, "OK", 2);
1428 if (packet[0] == 'Z')
1430 if ((retval = watchpoint_add(target, address, size, type-2, 0, 0xffffffffu)) != ERROR_OK)
1432 if ((retval = gdb_error(connection, retval)) != ERROR_OK)
1437 gdb_put_packet(connection, "OK", 2);
1442 watchpoint_remove(target, address);
1443 gdb_put_packet(connection, "OK", 2);
1454 /* print out a string and allocate more space as needed, mainly used for XML at this point */
1455 void xml_printf(int *retval, char **xml, int *pos, int *size, const char *fmt, ...)
1457 if (*retval != ERROR_OK)
1465 if ((*xml == NULL) || (!first))
1467 /* start by 0 to exercise all the code paths.
1468 * Need minimum 2 bytes to fit 1 char and 0 terminator. */
1470 *size = *size * 2 + 2;
1472 *xml = realloc(*xml, *size);
1477 *retval = ERROR_SERVER_REMOTE_CLOSED;
1485 ret = vsnprintf(*xml + *pos, *size - *pos, fmt, ap);
1487 if ((ret > 0) && ((ret + 1) < *size - *pos))
1492 /* there was just enough or not enough space, allocate more. */
1497 static int decode_xfer_read(char *buf, char **annex, int *ofs, unsigned int *len)
1501 /* Extract and NUL-terminate the annex. */
1503 while (*buf && *buf != ':')
1509 /* After the read marker and annex, qXfer looks like a
1510 * traditional 'm' packet. */
1512 *ofs = strtoul(buf, &separator, 16);
1514 if (*separator != ',')
1517 *len = strtoul(separator+1, NULL, 16);
1522 int gdb_calc_blocksize(flash_bank_t *bank)
1525 int block_size = 0xffffffff;
1527 /* loop through all sectors and return smallest sector size */
1529 for (i = 0; i < bank->num_sectors; i++)
1531 if (bank->sectors[i].size < block_size)
1532 block_size = bank->sectors[i].size;
1538 static int compare_bank (const void * a, const void * b)
1540 flash_bank_t *b1, *b2;
1541 b1=*((flash_bank_t **)a);
1542 b2=*((flash_bank_t **)b);
1544 if (b1->base==b2->base)
1547 } else if (b1->base>b2->base)
1556 int gdb_query_packet(connection_t *connection, target_t *target, char *packet, int packet_size)
1558 command_context_t *cmd_ctx = connection->cmd_ctx;
1559 gdb_connection_t *gdb_connection = connection->priv;
1561 if (strstr(packet, "qRcmd,"))
1563 if (packet_size > 6)
1567 cmd = malloc((packet_size - 6)/2 + 1);
1568 for (i=0; i < (packet_size - 6)/2; i++)
1571 sscanf(packet + 6 + 2*i, "%2x", &tmp);
1574 cmd[(packet_size - 6)/2] = 0x0;
1576 /* We want to print all debug output to GDB connection */
1577 log_add_callback(gdb_log_callback, connection);
1578 target_call_timer_callbacks_now();
1579 command_run_line(cmd_ctx, cmd);
1580 target_call_timer_callbacks_now();
1581 log_remove_callback(gdb_log_callback, connection);
1584 gdb_put_packet(connection, "OK", 2);
1587 else if (strstr(packet, "qCRC:"))
1589 if (packet_size > 5)
1598 /* skip command character */
1601 addr = strtoul(packet, &separator, 16);
1603 if (*separator != ',')
1605 LOG_ERROR("incomplete read memory packet received, dropping connection");
1606 return ERROR_SERVER_REMOTE_CLOSED;
1609 len = strtoul(separator + 1, NULL, 16);
1611 retval = target_checksum_memory(target, addr, len, &checksum);
1613 if (retval == ERROR_OK)
1615 snprintf(gdb_reply, 10, "C%8.8x", checksum);
1616 gdb_put_packet(connection, gdb_reply, 9);
1620 if ((retval = gdb_error(connection, retval)) != ERROR_OK)
1627 else if (strstr(packet, "qSupported"))
1629 /* we currently support packet size and qXfer:memory-map:read (if enabled)
1630 * disable qXfer:features:read for the moment */
1631 int retval = ERROR_OK;
1632 char *buffer = NULL;
1636 xml_printf(&retval, &buffer, &pos, &size,
1637 "PacketSize=%x;qXfer:memory-map:read%c;qXfer:features:read-;QStartNoAckMode+",
1638 (GDB_BUFFER_SIZE - 1), ((gdb_use_memory_map == 1)&&(flash_get_bank_count()>0)) ? '+' : '-');
1640 if (retval != ERROR_OK)
1642 gdb_send_error(connection, 01);
1646 gdb_put_packet(connection, buffer, strlen(buffer));
1651 else if (strstr(packet, "qXfer:memory-map:read::")&&(flash_get_bank_count()>0))
1653 /* We get away with only specifying flash here. Regions that are not
1654 * specified are treated as if we provided no memory map(if not we
1655 * could detect the holes and mark them as RAM).
1656 * Normally we only execute this code once, but no big deal if we
1657 * have to regenerate it a couple of times. */
1663 int retval = ERROR_OK;
1670 /* skip command character */
1673 offset = strtoul(packet, &separator, 16);
1674 length = strtoul(separator + 1, &separator, 16);
1676 xml_printf(&retval, &xml, &pos, &size, "<memory-map>\n");
1679 sort banks in ascending order, we need to make non-flash memory be ram(or rather
1680 read/write) by default for GDB.
1681 GDB does not have a concept of non-cacheable read/write memory.
1683 flash_bank_t **banks=malloc(sizeof(flash_bank_t *)*flash_get_bank_count());
1686 for (i=0; i<flash_get_bank_count(); i++)
1688 p = get_flash_bank_by_num(i);
1692 retval = ERROR_FAIL;
1693 gdb_send_error(connection, retval);
1699 qsort(banks, flash_get_bank_count(), sizeof(flash_bank_t *), compare_bank);
1702 for (i=0; i<flash_get_bank_count(); i++)
1706 if (ram_start<p->base)
1708 xml_printf(&retval, &xml, &pos, &size, "<memory type=\"ram\" start=\"0x%x\" length=\"0x%x\"/>\n",
1709 ram_start, p->base-ram_start);
1712 /* if device has uneven sector sizes, eg. str7, lpc
1713 * we pass the smallest sector size to gdb memory map */
1714 blocksize = gdb_calc_blocksize(p);
1716 xml_printf(&retval, &xml, &pos, &size, "<memory type=\"flash\" start=\"0x%x\" length=\"0x%x\">\n" \
1717 "<property name=\"blocksize\">0x%x</property>\n" \
1719 p->base, p->size, blocksize);
1720 ram_start=p->base+p->size;
1724 xml_printf(&retval, &xml, &pos, &size, "<memory type=\"ram\" start=\"0x%x\" length=\"0x%x\"/>\n",
1725 ram_start, 0-ram_start);
1728 /* a flash chip could be at the very end of the 32 bit address space, in which case
1729 ram_start will be precisely 0 */
1735 xml_printf(&retval, &xml, &pos, &size, "</memory-map>\n");
1737 if (retval != ERROR_OK)
1739 gdb_send_error(connection, retval);
1743 if (offset + length > pos)
1745 length = pos - offset;
1748 char *t = malloc(length + 1);
1750 memcpy(t + 1, xml + offset, length);
1751 gdb_put_packet(connection, t, length + 1);
1757 else if (strstr(packet, "qXfer:features:read:"))
1762 int retval = ERROR_OK;
1765 unsigned int length;
1768 /* skip command character */
1771 if (decode_xfer_read(packet, &annex, &offset, &length) < 0)
1773 gdb_send_error(connection, 01);
1777 if (strcmp(annex, "target.xml") != 0)
1779 gdb_send_error(connection, 01);
1783 xml_printf(&retval, &xml, &pos, &size, \
1784 "l<target version=\"1.0\">\n<architecture>arm</architecture>\n</target>\n");
1786 if (retval != ERROR_OK)
1788 gdb_send_error(connection, retval);
1792 gdb_put_packet(connection, xml, strlen(xml));
1797 else if (strstr(packet, "QStartNoAckMode"))
1799 gdb_connection->noack_mode = 1;
1800 gdb_put_packet(connection, "OK", 2);
1804 gdb_put_packet(connection, "", 0);
1808 int gdb_v_packet(connection_t *connection, target_t *target, char *packet, int packet_size)
1810 gdb_connection_t *gdb_connection = connection->priv;
1811 gdb_service_t *gdb_service = connection->service->priv;
1814 /* if flash programming disabled - send a empty reply */
1816 if (gdb_flash_program == 0)
1818 gdb_put_packet(connection, "", 0);
1822 if (strstr(packet, "vFlashErase:"))
1825 unsigned long length;
1827 char *parse = packet + 12;
1830 LOG_ERROR("incomplete vFlashErase packet received, dropping connection");
1831 return ERROR_SERVER_REMOTE_CLOSED;
1834 addr = strtoul(parse, &parse, 16);
1836 if (*(parse++) != ',' || *parse == '\0')
1838 LOG_ERROR("incomplete vFlashErase packet received, dropping connection");
1839 return ERROR_SERVER_REMOTE_CLOSED;
1842 length = strtoul(parse, &parse, 16);
1846 LOG_ERROR("incomplete vFlashErase packet received, dropping connection");
1847 return ERROR_SERVER_REMOTE_CLOSED;
1850 /* assume all sectors need erasing - stops any problems
1851 * when flash_write is called multiple times */
1854 /* perform any target specific operations before the erase */
1855 target_call_event_callbacks(gdb_service->target, TARGET_EVENT_GDB_FLASH_ERASE_START);
1856 result = flash_erase_address_range(gdb_service->target, addr, length );
1857 target_call_event_callbacks(gdb_service->target, TARGET_EVENT_GDB_FLASH_ERASE_END);
1860 if (result != ERROR_OK)
1862 /* GDB doesn't evaluate the actual error number returned,
1863 * treat a failed erase as an I/O error
1865 gdb_send_error(connection, EIO);
1866 LOG_ERROR("flash_erase returned %i", result);
1869 gdb_put_packet(connection, "OK", 2);
1874 if (strstr(packet, "vFlashWrite:"))
1878 unsigned long length;
1879 char *parse = packet + 12;
1883 LOG_ERROR("incomplete vFlashErase packet received, dropping connection");
1884 return ERROR_SERVER_REMOTE_CLOSED;
1886 addr = strtoul(parse, &parse, 16);
1887 if (*(parse++) != ':')
1889 LOG_ERROR("incomplete vFlashErase packet received, dropping connection");
1890 return ERROR_SERVER_REMOTE_CLOSED;
1892 length = packet_size - (parse - packet);
1894 /* create a new image if there isn't already one */
1895 if (gdb_connection->vflash_image == NULL)
1897 gdb_connection->vflash_image = malloc(sizeof(image_t));
1898 image_open(gdb_connection->vflash_image, "", "build");
1901 /* create new section with content from packet buffer */
1902 if((retval = image_add_section(gdb_connection->vflash_image, addr, length, 0x0, (u8*)parse)) != ERROR_OK)
1907 gdb_put_packet(connection, "OK", 2);
1912 if (!strcmp(packet, "vFlashDone"))
1916 /* process the flashing buffer. No need to erase as GDB
1917 * always issues a vFlashErase first. */
1918 target_call_event_callbacks(gdb_service->target, TARGET_EVENT_GDB_FLASH_WRITE_START);
1919 result = flash_write(gdb_service->target, gdb_connection->vflash_image, &written, 0);
1920 target_call_event_callbacks(gdb_service->target, TARGET_EVENT_GDB_FLASH_WRITE_END);
1921 if ( result != ERROR_OK)
1923 if (result == ERROR_FLASH_DST_OUT_OF_BANK)
1924 gdb_put_packet(connection, "E.memtype", 9);
1926 gdb_send_error(connection, EIO);
1930 LOG_DEBUG("wrote %u bytes from vFlash image to flash", written);
1931 gdb_put_packet(connection, "OK", 2);
1934 image_close(gdb_connection->vflash_image);
1935 free(gdb_connection->vflash_image);
1936 gdb_connection->vflash_image = NULL;
1941 gdb_put_packet(connection, "", 0);
1945 int gdb_detach(connection_t *connection, target_t *target)
1948 switch( detach_mode )
1950 case GDB_DETACH_RESUME:
1951 target_handle_event( target, TARGET_EVENT_OLD_pre_resume );
1952 target_resume(target, 1, 0, 1, 0);
1955 case GDB_DETACH_RESET:
1956 /* FIX?? make this configurable?? */
1957 target_process_reset(connection->cmd_ctx, RESET_HALT);
1960 case GDB_DETACH_HALT:
1961 target_halt(target);
1964 case GDB_DETACH_NOTHING:
1968 gdb_put_packet(connection, "OK", 2);
1972 static void gdb_log_callback(void *priv, const char *file, int line,
1973 const char *function, const char *string)
1975 connection_t *connection = priv;
1976 gdb_connection_t *gdb_con = connection->priv;
1980 /* do not reply this using the O packet */
1984 gdb_output_con(connection, string);
1987 /* Do not allocate this on the stack */
1988 char gdb_packet_buffer[GDB_BUFFER_SIZE];
1990 static void gdb_sig_halted(connection_t *connection)
1993 snprintf(sig_reply, 4, "T%2.2x", 2);
1994 gdb_put_packet(connection, sig_reply, 3);
1998 int gdb_input_inner(connection_t *connection)
2000 gdb_service_t *gdb_service = connection->service->priv;
2001 target_t *target = gdb_service->target;
2002 char *packet=gdb_packet_buffer;
2005 gdb_connection_t *gdb_con = connection->priv;
2006 static int extended_protocol = 0;
2008 /* drain input buffer */
2011 packet_size = GDB_BUFFER_SIZE-1;
2012 if ((retval = gdb_get_packet(connection, packet, &packet_size)) != ERROR_OK)
2017 /* terminate with zero */
2018 packet[packet_size] = 0;
2020 if( LOG_LEVEL_IS( LOG_LVL_DEBUG ) ){
2021 if( packet[0] == 'X' ){
2022 // binary packets spew junk into the debug log stream
2025 for( x = 0 ; (x < 49) && (packet[x] != ':') ; x++ ){
2029 LOG_DEBUG("received packet: '%s:<binary-data>'", buf );
2031 LOG_DEBUG("received packet: '%s'", packet );
2035 if (packet_size > 0)
2041 /* Hct... -- set thread
2042 * we don't have threads, send empty reply */
2043 gdb_put_packet(connection, NULL, 0);
2047 retval = gdb_query_packet(connection, target, packet, packet_size);
2050 retval = gdb_get_registers_packet(connection, target, packet, packet_size);
2053 retval = gdb_set_registers_packet(connection, target, packet, packet_size);
2056 retval = gdb_get_register_packet(connection, target, packet, packet_size);
2059 retval = gdb_set_register_packet(connection, target, packet, packet_size);
2062 retval = gdb_read_memory_packet(connection, target, packet, packet_size);
2065 retval = gdb_write_memory_packet(connection, target, packet, packet_size);
2069 retval = gdb_breakpoint_watchpoint_packet(connection, target, packet, packet_size);
2072 gdb_last_signal_packet(connection, target, packet, packet_size);
2077 if (target->state != TARGET_HALTED)
2079 /* If the target isn't in the halted state, then we can't
2080 * step/continue. This might be early setup, etc.
2082 gdb_sig_halted(connection);
2085 /* We're running/stepping, in which case we can
2086 * forward log output until the target is halted
2088 gdb_connection_t *gdb_con = connection->priv;
2089 gdb_con->frontend_state = TARGET_RUNNING;
2090 log_add_callback(gdb_log_callback, connection);
2091 target_call_event_callbacks(target, TARGET_EVENT_GDB_START);
2092 int retval=gdb_step_continue_packet(connection, target, packet, packet_size);
2093 if (retval!=ERROR_OK)
2095 /* we'll never receive a halted condition... issue a false one.. */
2096 gdb_frontend_halted(target, connection);
2102 retval = gdb_v_packet(connection, target, packet, packet_size);
2105 retval = gdb_detach(connection, target);
2106 extended_protocol = 0;
2109 if ((retval = gdb_write_memory_binary_packet(connection, target, packet, packet_size)) != ERROR_OK)
2113 if (extended_protocol != 0)
2115 gdb_put_packet(connection, "OK", 2);
2116 return ERROR_SERVER_REMOTE_CLOSED;
2118 /* handle extended remote protocol */
2119 extended_protocol = 1;
2120 gdb_put_packet(connection, "OK", 2);
2123 /* handle extended restart packet */
2124 breakpoint_clear_target(gdb_service->target);
2125 watchpoint_clear_target(gdb_service->target);
2126 command_run_linef(connection->cmd_ctx, "ocd_gdb_restart %d", get_num_by_target(target));
2129 /* ignore unkown packets */
2130 LOG_DEBUG("ignoring 0x%2.2x packet", packet[0]);
2131 gdb_put_packet(connection, NULL, 0);
2135 /* if a packet handler returned an error, exit input loop */
2136 if (retval != ERROR_OK)
2140 if (gdb_con->ctrl_c)
2142 if (target->state == TARGET_RUNNING)
2144 target_halt(target);
2145 gdb_con->ctrl_c = 0;
2149 } while (gdb_con->buf_cnt > 0);
2154 int gdb_input(connection_t *connection)
2156 int retval = gdb_input_inner(connection);
2157 gdb_connection_t *gdb_con = connection->priv;
2158 if (retval == ERROR_SERVER_REMOTE_CLOSED)
2161 /* logging does not propagate the error, yet can set th gdb_con->closed flag */
2162 if (gdb_con->closed)
2163 return ERROR_SERVER_REMOTE_CLOSED;
2165 /* we'll recover from any other errors(e.g. temporary timeouts, etc.) */
2171 gdb_service_t *gdb_service;
2172 target_t *target = all_targets;
2176 LOG_WARNING("no gdb ports allocated as no target has been specified");
2182 LOG_WARNING("no gdb port specified, using default port 3333");
2188 char service_name[8];
2190 snprintf(service_name, 8, "gdb-%2.2i", target->target_number);
2192 gdb_service = malloc(sizeof(gdb_service_t));
2193 gdb_service->target = target;
2195 add_service("gdb", CONNECTION_GDB,
2196 gdb_port + target->target_number,
2197 1, gdb_new_connection, gdb_input,
2198 gdb_connection_closed,
2201 LOG_DEBUG("gdb service for target %s at port %i",
2203 gdb_port + target->target_number);
2205 target = target->next;
2211 /* daemon configuration command gdb_port */
2212 int handle_gdb_port_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2216 command_print(cmd_ctx, "%d", gdb_port);
2220 /* only if the port wasn't overwritten by cmdline */
2222 gdb_port = strtoul(args[0], NULL, 0);
2227 int handle_gdb_detach_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2231 if (strcmp(args[0], "resume") == 0)
2233 detach_mode = GDB_DETACH_RESUME;
2236 else if (strcmp(args[0], "reset") == 0)
2238 detach_mode = GDB_DETACH_RESET;
2241 else if (strcmp(args[0], "halt") == 0)
2243 detach_mode = GDB_DETACH_HALT;
2246 else if (strcmp(args[0], "nothing") == 0)
2248 detach_mode = GDB_DETACH_NOTHING;
2252 LOG_WARNING("invalid gdb_detach configuration directive: %s", args[0]);
2255 return ERROR_COMMAND_SYNTAX_ERROR;
2258 int handle_gdb_memory_map_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2262 if (strcmp(args[0], "enable") == 0)
2264 gdb_use_memory_map = 1;
2267 else if (strcmp(args[0], "disable") == 0)
2269 gdb_use_memory_map = 0;
2273 LOG_WARNING("invalid gdb_memory_map configuration directive %s", args[0]);
2276 return ERROR_COMMAND_SYNTAX_ERROR;
2279 int handle_gdb_flash_program_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2283 if (strcmp(args[0], "enable") == 0)
2285 gdb_flash_program = 1;
2288 else if (strcmp(args[0], "disable") == 0)
2290 gdb_flash_program = 0;
2294 LOG_WARNING("invalid gdb_flash_program configuration directive: %s", args[0]);
2297 return ERROR_COMMAND_SYNTAX_ERROR;
2300 int handle_gdb_report_data_abort_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2304 if (strcmp(args[0], "enable") == 0)
2306 gdb_report_data_abort = 1;
2309 else if (strcmp(args[0], "disable") == 0)
2311 gdb_report_data_abort = 0;
2315 LOG_WARNING("invalid gdb_report_data_abort configuration directive: %s", args[0]);
2318 return ERROR_COMMAND_SYNTAX_ERROR;
2321 /* gdb_breakpoint_override */
2322 int handle_gdb_breakpoint_override_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
2329 gdb_breakpoint_override = 1;
2330 if (strcmp(args[0], "hard")==0)
2332 gdb_breakpoint_override_type=BKPT_HARD;
2333 } else if (strcmp(args[0], "soft")==0)
2335 gdb_breakpoint_override_type=BKPT_SOFT;
2336 } else if (strcmp(args[0], "disable") == 0)
2338 gdb_breakpoint_override = 0;
2342 return ERROR_COMMAND_SYNTAX_ERROR;
2344 if (gdb_breakpoint_override)
2346 LOG_USER("force %s breakpoints", (gdb_breakpoint_override_type==BKPT_HARD)?"hard":"soft");
2349 LOG_USER("breakpoint type is not overriden");
2355 int gdb_register_commands(command_context_t *command_context)
2357 register_command(command_context, NULL, "gdb_port", handle_gdb_port_command,
2358 COMMAND_CONFIG, "daemon configuration command gdb_port");
2359 register_command(command_context, NULL, "gdb_detach", handle_gdb_detach_command,
2360 COMMAND_CONFIG, "");
2361 register_command(command_context, NULL, "gdb_memory_map", handle_gdb_memory_map_command,
2362 COMMAND_CONFIG, "enable or disable memory map");
2363 register_command(command_context, NULL, "gdb_flash_program", handle_gdb_flash_program_command,
2364 COMMAND_CONFIG, "enable or disable flash program");
2365 register_command(command_context, NULL, "gdb_report_data_abort", handle_gdb_report_data_abort_command,
2366 COMMAND_CONFIG, "enable or disable report data");
2367 register_command(command_context, NULL, "gdb_breakpoint_override", handle_gdb_breakpoint_override_command,
2368 COMMAND_EXEC, "hard/soft/disabled - force breakpoint type for gdb 'break' commands."
2369 "The raison d'etre for this option is to support GDB GUI's without "
2370 "a hard/soft breakpoint concept where the default OpenOCD behaviour "
2371 "is not sufficient");