1 /***************************************************************************
2 * Copyright (C) 2005 by Dominic Rath *
3 * Dominic.Rath@gmx.de *
5 * This program is free software; you can redistribute it and/or modify *
6 * it under the terms of the GNU General Public License as published by *
7 * the Free Software Foundation; either version 2 of the License, or *
8 * (at your option) any later version. *
10 * This program is distributed in the hope that it will be useful, *
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
13 * GNU General Public License for more details. *
15 * You should have received a copy of the GNU General Public License *
16 * along with this program; if not, write to the *
17 * Free Software Foundation, Inc., *
18 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
19 ***************************************************************************/
24 #include "replacements.h"
26 #include "gdb_server.h"
30 #include "binarybuffer.h"
31 #include "breakpoints.h"
40 #define _DEBUG_GDB_IO_
43 static unsigned short gdb_port;
45 int gdb_last_signal(target_t *target)
47 switch (target->debug_reason)
49 case DBG_REASON_DBGRQ:
50 return 0x2; /* SIGINT */
51 case DBG_REASON_BREAKPOINT:
52 case DBG_REASON_WATCHPOINT:
53 case DBG_REASON_WPTANDBKPT:
54 return 0x05; /* SIGTRAP */
55 case DBG_REASON_SINGLESTEP:
56 return 0x05; /* SIGTRAP */
57 case DBG_REASON_NOTHALTED:
58 return 0x0; /* no signal... shouldn't happen */
60 ERROR("BUG: undefined debug reason");
65 int gdb_get_char(connection_t *connection, int* next_char)
67 gdb_connection_t *gdb_con = connection->priv;
70 if (gdb_con->buf_cnt-- > 0)
72 *next_char = *(gdb_con->buf_p++);
73 if (gdb_con->buf_cnt > 0)
74 connection->input_pending = 1;
76 connection->input_pending = 0;
79 DEBUG("returned char '%c' (0x%2.2x)", *next_char, *next_char);
85 while ((gdb_con->buf_cnt = read_socket(connection->fd, gdb_con->buffer, GDB_BUFFER_SIZE)) <= 0)
87 if (gdb_con->buf_cnt == 0)
88 return ERROR_SERVER_REMOTE_CLOSED;
91 errno = WSAGetLastError();
99 return ERROR_SERVER_REMOTE_CLOSED;
101 ERROR("read: %d", strerror(errno));
111 return ERROR_SERVER_REMOTE_CLOSED;
113 return ERROR_SERVER_REMOTE_CLOSED;
115 ERROR("read: %s", strerror(errno));
121 debug_buffer = malloc(gdb_con->buf_cnt + 1);
122 memcpy(debug_buffer, gdb_con->buffer, gdb_con->buf_cnt);
123 debug_buffer[gdb_con->buf_cnt] = 0;
124 DEBUG("received '%s'", debug_buffer);
127 gdb_con->buf_p = gdb_con->buffer;
129 *next_char = *(gdb_con->buf_p++);
130 if (gdb_con->buf_cnt > 0)
131 connection->input_pending = 1;
133 connection->input_pending = 0;
134 #ifdef _DEBUG_GDB_IO_
135 DEBUG("returned char '%c' (0x%2.2x)", *next_char, *next_char);
141 int gdb_putback_char(connection_t *connection, int last_char)
143 gdb_connection_t *gdb_con = connection->priv;
145 if (gdb_con->buf_p > gdb_con->buffer)
147 *(--gdb_con->buf_p) = last_char;
152 ERROR("BUG: couldn't put character back");
158 int gdb_put_packet(connection_t *connection, char *buffer, int len)
161 unsigned char my_checksum = 0;
166 gdb_connection_t *gdb_con = connection->priv;
168 for (i = 0; i < len; i++)
169 my_checksum += buffer[i];
174 debug_buffer = malloc(len + 1);
175 memcpy(debug_buffer, buffer, len);
176 debug_buffer[len] = 0;
177 DEBUG("sending packet '$%s#%2.2x'", debug_buffer, my_checksum);
180 write_socket(connection->fd, "$", 1);
182 write_socket(connection->fd, buffer, len);
183 write_socket(connection->fd, "#", 1);
185 snprintf(checksum, 3, "%2.2x", my_checksum);
187 write_socket(connection->fd, checksum, 2);
189 if ((retval = gdb_get_char(connection, &reply)) != ERROR_OK)
194 else if (reply == '-')
195 WARNING("negative reply, retrying");
196 else if (reply == 0x3)
199 if ((retval = gdb_get_char(connection, &reply)) != ERROR_OK)
203 else if (reply == '-')
204 WARNING("negative reply, retrying");
207 ERROR("unknown character 0x%2.2x in reply, dropping connection", reply);
208 return ERROR_SERVER_REMOTE_CLOSED;
213 ERROR("unknown character 0x%2.2x in reply, dropping connection", reply);
214 return ERROR_SERVER_REMOTE_CLOSED;
221 int gdb_get_packet(connection_t *connection, char *buffer, int *len)
229 unsigned char my_checksum = 0;
230 gdb_connection_t *gdb_con = connection->priv;
236 if ((retval = gdb_get_char(connection, &character)) != ERROR_OK)
239 DEBUG("character: '%c'", character);
246 WARNING("acknowledgment received, but no packet pending");
249 WARNING("negative acknowledgment, but no packet pending");
256 WARNING("ignoring character 0x%x", character);
259 } while (character != '$');
265 if ((retval = gdb_get_char(connection, &character)) != ERROR_OK)
269 packet_type = character;
273 if( packet_type == 'X' )
280 /* data transmitted in binary mode (X packet)
281 * uses 0x7d as escape character */
282 my_checksum += character & 0xff;
283 gdb_get_char(connection, &character);
284 my_checksum += character & 0xff;
285 buffer[count++] = (character ^ 0x20) & 0xff;
288 ERROR("packet buffer too small");
289 return ERROR_GDB_BUFFER_TOO_SMALL;
293 buffer[count++] = character & 0xff;
294 my_checksum += character & 0xff;
297 ERROR("packet buffer too small");
298 return ERROR_GDB_BUFFER_TOO_SMALL;
313 buffer[count++] = character & 0xff;
314 my_checksum += character & 0xff;
317 ERROR("packet buffer too small");
318 return ERROR_GDB_BUFFER_TOO_SMALL;
323 } while (character != '#');
327 if ((retval = gdb_get_char(connection, &character)) != ERROR_OK)
329 checksum[0] = character;
330 if ((retval = gdb_get_char(connection, &character)) != ERROR_OK)
332 checksum[1] = character;
335 if (my_checksum == strtoul(checksum, NULL, 16))
337 write_socket(connection->fd, "+", 1);
341 WARNING("checksum error, requesting retransmission");
342 write_socket(connection->fd, "-", 1);
348 int gdb_output(struct command_context_s *context, char* line)
350 connection_t *connection = context->output_handler_priv;
354 bin_size = strlen(line);
356 hex_buffer = malloc(bin_size*2 + 4);
359 for (i=0; i<bin_size; i++)
360 snprintf(hex_buffer + 1 + i*2, 3, "%2.2x", line[i]);
361 hex_buffer[bin_size*2+1] = '0';
362 hex_buffer[bin_size*2+2] = 'a';
363 hex_buffer[bin_size*2+3] = 0x0;
365 gdb_put_packet(connection, hex_buffer, bin_size*2 + 3);
371 int gdb_target_callback_event_handler(struct target_s *target, enum target_event event, void *priv)
373 connection_t *connection = priv;
374 gdb_connection_t *gdb_connection = connection->priv;
380 case TARGET_EVENT_HALTED:
381 if (gdb_connection->frontend_state == TARGET_RUNNING)
383 if (gdb_connection->ctrl_c)
386 gdb_connection->ctrl_c = 0;
390 signal = gdb_last_signal(target);
393 snprintf(sig_reply, 4, "T%2.2x", signal);
394 gdb_put_packet(connection, sig_reply, 3);
395 gdb_connection->frontend_state = TARGET_HALTED;
398 case TARGET_EVENT_RESUMED:
399 if (gdb_connection->frontend_state == TARGET_HALTED)
401 gdb_connection->frontend_state = TARGET_RUNNING;
411 int gdb_new_connection(connection_t *connection)
413 gdb_connection_t *gdb_connection = malloc(sizeof(gdb_connection_t));
414 gdb_service_t *gdb_service = connection->service->priv;
418 connection->priv = gdb_connection;
420 /* initialize gdb connection information */
421 gdb_connection->buf_p = gdb_connection->buffer;
422 gdb_connection->buf_cnt = 0;
423 gdb_connection->ctrl_c = 0;
424 gdb_connection->frontend_state = TARGET_HALTED;
426 /* output goes through gdb connection */
427 command_set_output_handler(connection->cmd_ctx, gdb_output, connection);
429 /* register callback to be informed about target events */
430 target_register_event_callback(gdb_target_callback_event_handler, connection);
432 /* a gdb session just attached, put the target in halt mode */
433 if (((retval = gdb_service->target->type->halt(gdb_service->target)) != ERROR_OK) &&
434 (retval != ERROR_TARGET_ALREADY_HALTED))
436 ERROR("error when trying to halt target");
440 while (gdb_service->target->state != TARGET_HALTED)
442 gdb_service->target->type->poll(gdb_service->target);
445 /* remove the initial ACK from the incoming buffer */
446 if ((retval = gdb_get_char(connection, &initial_ack)) != ERROR_OK)
449 if (initial_ack != '+')
450 gdb_putback_char(connection, initial_ack);
455 int gdb_connection_closed(connection_t *connection)
457 if (connection->priv)
458 free(connection->priv);
460 ERROR("BUG: connection->priv == NULL");
462 target_unregister_event_callback(gdb_target_callback_event_handler, connection);
467 void gdb_send_error(connection_t *connection, u8 the_error)
470 snprintf(err, 4, "E%2.2X", the_error );
471 gdb_put_packet(connection, err, 3);
474 int gdb_last_signal_packet(connection_t *connection, target_t *target, char* packet, int packet_size)
479 signal = gdb_last_signal(target);
481 snprintf(sig_reply, 4, "S%2.2x", signal);
482 gdb_put_packet(connection, sig_reply, 3);
487 void gdb_str_to_target(target_t *target, char *str, char *tstr)
489 int str_len = strlen(str);
494 ERROR("BUG: gdb value with uneven number of characters encountered");
498 if (target->endianness == TARGET_LITTLE_ENDIAN)
500 for (i = 0; i < str_len; i+=2)
502 tstr[str_len - i - 1] = str[i + 1];
503 tstr[str_len - i - 2] = str[i];
508 for (i = 0; i < str_len; i++)
515 void gdb_target_to_str(target_t *target, char *tstr, char *str)
517 int str_len = strlen(tstr);
522 ERROR("BUG: gdb value with uneven number of characters encountered");
526 if (target->endianness == TARGET_LITTLE_ENDIAN)
528 for (i = 0; i < str_len; i+=2)
530 str[str_len - i - 1] = tstr[i + 1];
531 str[str_len - i - 2] = tstr[i];
536 for (i = 0; i < str_len; i++)
543 int gdb_get_registers_packet(connection_t *connection, target_t *target, char* packet, int packet_size)
548 int reg_packet_size = 0;
555 if ((retval = target->type->get_gdb_reg_list(target, ®_list, ®_list_size)) != ERROR_OK)
559 case ERROR_TARGET_NOT_HALTED:
560 ERROR("gdb requested registers but we're not halted, dropping connection");
561 return ERROR_SERVER_REMOTE_CLOSED;
563 /* this is a bug condition - get_gdb_reg_list() may not return any other error */
564 ERROR("BUG: unexpected error returned by get_gdb_reg_list()");
569 for (i = 0; i < reg_list_size; i++)
571 reg_packet_size += reg_list[i]->size;
574 reg_packet = malloc(CEIL(reg_packet_size, 8) * 2);
575 reg_packet_p = reg_packet;
577 for (i = 0; i < reg_list_size; i++)
579 char *hex_buf = buf_to_str(reg_list[i]->value, reg_list[i]->size, 16);
580 DEBUG("hex_buf: %s", hex_buf);
581 gdb_str_to_target(target, hex_buf, reg_packet_p);
582 reg_packet_p += CEIL(reg_list[i]->size, 8) * 2;
586 reg_packet_p = strndup(reg_packet, CEIL(reg_packet_size, 8) * 2);
587 DEBUG("reg_packet: %s", reg_packet_p);
590 gdb_put_packet(connection, reg_packet, CEIL(reg_packet_size, 8) * 2);
598 int gdb_set_registers_packet(connection_t *connection, target_t *target, char *packet, int packet_size)
608 /* skip command character */
614 WARNING("GDB set_registers packet with uneven characters received, dropping connection");
615 return ERROR_SERVER_REMOTE_CLOSED;
618 if ((retval = target->type->get_gdb_reg_list(target, ®_list, ®_list_size)) != ERROR_OK)
622 case ERROR_TARGET_NOT_HALTED:
623 ERROR("gdb tried to registers but we're not halted, dropping connection");
624 return ERROR_SERVER_REMOTE_CLOSED;
626 /* this is a bug condition - get_gdb_reg_list() may not return any other error */
627 ERROR("BUG: unexpected error returned by get_gdb_reg_list()");
633 for (i = 0; i < reg_list_size; i++)
637 reg_arch_type_t *arch_type;
639 /* convert from GDB-string (target-endian) to hex-string (big-endian) */
640 hex_buf = malloc(CEIL(reg_list[i]->size, 8) * 2);
641 gdb_target_to_str(target, packet_p, hex_buf);
643 /* convert hex-string to binary buffer */
644 bin_buf = malloc(CEIL(reg_list[i]->size, 8));
645 str_to_buf(hex_buf, CEIL(reg_list[i]->size, 8) * 2, bin_buf, reg_list[i]->size, 16);
647 /* get register arch_type, and call set method */
648 arch_type = register_get_arch_type(reg_list[i]->arch_type);
649 if (arch_type == NULL)
651 ERROR("BUG: encountered unregistered arch type");
654 arch_type->set(reg_list[i], bin_buf);
656 /* advance packet pointer */
657 packet_p += (CEIL(reg_list[i]->size, 8) * 2);
663 /* free reg_t *reg_list[] array allocated by get_gdb_reg_list */
666 gdb_put_packet(connection, "OK", 2);
671 int gdb_get_register_packet(connection_t *connection, target_t *target, char *packet, int packet_size)
674 int reg_num = strtoul(packet + 1, NULL, 16);
682 if ((retval = target->type->get_gdb_reg_list(target, ®_list, ®_list_size)) != ERROR_OK)
686 case ERROR_TARGET_NOT_HALTED:
687 ERROR("gdb requested registers but we're not halted, dropping connection");
688 return ERROR_SERVER_REMOTE_CLOSED;
690 /* this is a bug condition - get_gdb_reg_list() may not return any other error */
691 ERROR("BUG: unexpected error returned by get_gdb_reg_list()");
696 if (reg_list_size <= reg_num)
698 ERROR("gdb requested a non-existing register");
702 reg_packet = malloc(CEIL(reg_list[reg_num]->size, 8) * 2);
704 hex_buf = buf_to_str(reg_list[reg_num]->value, reg_list[reg_num]->size, 16);
706 gdb_str_to_target(target, reg_packet, hex_buf);
708 gdb_put_packet(connection, reg_packet, CEIL(reg_list[reg_num]->size, 8) * 2);
717 int gdb_set_register_packet(connection_t *connection, target_t *target, char *packet, int packet_size)
722 int reg_num = strtoul(packet + 1, &separator, 16);
726 reg_arch_type_t *arch_type;
730 if ((retval = target->type->get_gdb_reg_list(target, ®_list, ®_list_size)) != ERROR_OK)
734 case ERROR_TARGET_NOT_HALTED:
735 ERROR("gdb tried to set a register but we're not halted, dropping connection");
736 return ERROR_SERVER_REMOTE_CLOSED;
738 /* this is a bug condition - get_gdb_reg_list() may not return any other error */
739 ERROR("BUG: unexpected error returned by get_gdb_reg_list()");
744 if (reg_list_size < reg_num)
746 ERROR("gdb requested a non-existing register");
747 return ERROR_SERVER_REMOTE_CLOSED;
750 if (*separator != '=')
752 ERROR("GDB 'set register packet', but no '=' following the register number");
753 return ERROR_SERVER_REMOTE_CLOSED;
756 /* convert from GDB-string (target-endian) to hex-string (big-endian) */
757 hex_buf = malloc(CEIL(reg_list[reg_num]->size, 8) * 2);
758 gdb_target_to_str(target, separator + 1, hex_buf);
760 /* convert hex-string to binary buffer */
761 bin_buf = malloc(CEIL(reg_list[reg_num]->size, 8));
762 str_to_buf(hex_buf, CEIL(reg_list[reg_num]->size, 8) * 2, bin_buf, reg_list[reg_num]->size, 16);
764 /* get register arch_type, and call set method */
765 arch_type = register_get_arch_type(reg_list[reg_num]->arch_type);
766 if (arch_type == NULL)
768 ERROR("BUG: encountered unregistered arch type");
771 arch_type->set(reg_list[reg_num], bin_buf);
773 gdb_put_packet(connection, "OK", 2);
782 int gdb_memory_packet_error(connection_t *connection, int retval)
786 case ERROR_TARGET_NOT_HALTED:
787 ERROR("gdb tried to read memory but we're not halted, dropping connection");
788 return ERROR_SERVER_REMOTE_CLOSED;
790 case ERROR_TARGET_DATA_ABORT:
791 gdb_send_error(connection, EIO);
793 case ERROR_TARGET_TRANSLATION_FAULT:
794 gdb_send_error(connection, EFAULT);
796 case ERROR_TARGET_UNALIGNED_ACCESS:
797 gdb_send_error(connection, EFAULT);
800 ERROR("BUG: unexpected error %i", retval);
807 int gdb_read_memory_packet(connection_t *connection, target_t *target, char *packet, int packet_size)
819 /* skip command character */
822 addr = strtoul(packet, &separator, 16);
824 if (*separator != ',')
826 ERROR("incomplete read memory packet received, dropping connection");
827 return ERROR_SERVER_REMOTE_CLOSED;
830 len = strtoul(separator+1, NULL, 16);
832 buffer = malloc(len);
834 DEBUG("addr: 0x%8.8x, len: 0x%8.8x", addr, len);
840 retval = target->type->read_memory(target, addr, 4, 1, buffer);
842 retval = target->type->read_memory(target, addr, 1, len, buffer);
846 retval = target->type->read_memory(target, addr, 2, 1, buffer);
848 retval = target->type->read_memory(target, addr, 1, len, buffer);
851 if (((addr % 4) == 0) && ((len % 4) == 0))
852 retval = target->type->read_memory(target, addr, 4, len / 4, buffer);
854 retval = target->type->read_memory(target, addr, 1, len, buffer);
857 if (retval == ERROR_OK)
859 hex_buffer = malloc(len * 2 + 1);
861 for (i=0; i<len; i++)
862 snprintf(hex_buffer + 2*i, 3, "%2.2x", buffer[i]);
864 gdb_put_packet(connection, hex_buffer, len * 2);
870 if ((retval = gdb_memory_packet_error(connection, retval)) != ERROR_OK)
879 int gdb_write_memory_packet(connection_t *connection, target_t *target, char *packet, int packet_size)
890 /* skip command character */
893 addr = strtoul(packet, &separator, 16);
895 if (*separator != ',')
897 ERROR("incomplete write memory packet received, dropping connection");
898 return ERROR_SERVER_REMOTE_CLOSED;
901 len = strtoul(separator+1, &separator, 16);
903 if (*(separator++) != ':')
905 ERROR("incomplete write memory packet received, dropping connection");
906 return ERROR_SERVER_REMOTE_CLOSED;
909 buffer = malloc(len);
911 DEBUG("addr: 0x%8.8x, len: 0x%8.8x", addr, len);
913 for (i=0; i<len; i++)
916 sscanf(separator + 2*i, "%2x", &tmp);
922 /* handle sized writes */
925 retval = target->type->write_memory(target, addr, 4, 1, buffer);
927 retval = target->type->write_memory(target, addr, 1, len, buffer);
931 retval = target->type->write_memory(target, addr, 2, 1, buffer);
933 retval = target->type->write_memory(target, addr, 1, len, buffer);
937 retval = target->type->write_memory(target, addr, 1, len, buffer);
939 /* handle bulk writes */
941 retval = target_write_buffer(target, addr, len, buffer);
945 if (retval == ERROR_OK)
947 gdb_put_packet(connection, "OK", 2);
951 if ((retval = gdb_memory_packet_error(connection, retval)) != ERROR_OK)
960 int gdb_write_memory_binary_packet(connection_t *connection, target_t *target, char *packet, int packet_size)
969 /* skip command character */
972 addr = strtoul(packet, &separator, 16);
974 if (*separator != ',')
976 ERROR("incomplete write memory binary packet received, dropping connection");
977 return ERROR_SERVER_REMOTE_CLOSED;
980 len = strtoul(separator+1, &separator, 16);
982 if (*(separator++) != ':')
984 ERROR("incomplete write memory binary packet received, dropping connection");
985 return ERROR_SERVER_REMOTE_CLOSED;
990 buffer = malloc(len);
992 DEBUG("addr: 0x%8.8x, len: 0x%8.8x", addr, len);
994 memcpy( buffer, separator, len );
1000 retval = target->type->write_memory(target, addr, 4, 1, buffer);
1002 retval = target->type->write_memory(target, addr, 1, len, buffer);
1005 if ((addr % 2) == 0)
1006 retval = target->type->write_memory(target, addr, 2, 1, buffer);
1008 retval = target->type->write_memory(target, addr, 1, len, buffer);
1012 retval = target->type->write_memory(target, addr, 1, len, buffer);
1015 retval = target_write_buffer(target, addr, len, buffer);
1022 if (retval == ERROR_OK)
1024 gdb_put_packet(connection, "OK", 2);
1028 if ((retval = gdb_memory_packet_error(connection, retval)) != ERROR_OK)
1035 void gdb_step_continue_packet(connection_t *connection, target_t *target, char *packet, int packet_size)
1042 if (packet_size > 1)
1044 packet[packet_size] = 0;
1045 address = strtoul(packet + 1, NULL, 16);
1052 if (packet[0] == 'c')
1055 target->type->resume(target, current, address, 0, 0); /* resume at current address, don't handle breakpoints, not debugging */
1057 else if (packet[0] == 's')
1060 target->type->step(target, current, address, 0); /* step at current or address, don't handle breakpoints */
1064 int gdb_bp_wp_packet_error(connection_t *connection, int retval)
1068 case ERROR_TARGET_NOT_HALTED:
1069 ERROR("gdb tried to set a breakpoint but we're not halted, dropping connection");
1070 return ERROR_SERVER_REMOTE_CLOSED;
1072 case ERROR_TARGET_RESOURCE_NOT_AVAILABLE:
1073 gdb_send_error(connection, EBUSY);
1076 ERROR("BUG: unexpected error %i", retval);
1083 int gdb_breakpoint_watchpoint_packet(connection_t *connection, target_t *target, char *packet, int packet_size)
1086 enum breakpoint_type bp_type;
1087 enum watchpoint_rw wp_type;
1095 type = strtoul(packet + 1, &separator, 16);
1097 if (type == 0) /* memory breakpoint */
1098 bp_type = BKPT_SOFT;
1099 else if (type == 1) /* hardware breakpoint */
1100 bp_type = BKPT_HARD;
1101 else if (type == 2) /* write watchpoint */
1102 wp_type = WPT_WRITE;
1103 else if (type == 3) /* read watchpoint */
1105 else if (type == 4) /* access watchpoint */
1106 wp_type = WPT_ACCESS;
1108 if (*separator != ',')
1110 ERROR("incomplete breakpoint/watchpoint packet received, dropping connection");
1111 return ERROR_SERVER_REMOTE_CLOSED;
1114 address = strtoul(separator+1, &separator, 16);
1116 if (*separator != ',')
1118 ERROR("incomplete breakpoint/watchpoint packet received, dropping connection");
1119 return ERROR_SERVER_REMOTE_CLOSED;
1122 size = strtoul(separator+1, &separator, 16);
1128 if (packet[0] == 'Z')
1130 if ((retval = breakpoint_add(target, address, size, bp_type)) != ERROR_OK)
1132 if ((retval = gdb_bp_wp_packet_error(connection, retval)) != ERROR_OK)
1137 gdb_put_packet(connection, "OK", 2);
1142 breakpoint_remove(target, address);
1143 gdb_put_packet(connection, "OK", 2);
1150 if (packet[0] == 'Z')
1152 if ((retval = watchpoint_add(target, address, size, type-2, 0, 0xffffffffu)) != ERROR_OK)
1154 if ((retval = gdb_bp_wp_packet_error(connection, retval)) != ERROR_OK)
1159 gdb_put_packet(connection, "OK", 2);
1164 watchpoint_remove(target, address);
1165 gdb_put_packet(connection, "OK", 2);
1176 void gdb_query_packet(connection_t *connection, char *packet, int packet_size)
1178 command_context_t *cmd_ctx = connection->cmd_ctx;
1180 if (strstr(packet, "qRcmd,"))
1182 if (packet_size > 6)
1186 cmd = malloc((packet_size - 6)/2 + 1);
1187 for (i=0; i < (packet_size - 6)/2; i++)
1190 sscanf(packet + 6 + 2*i, "%2x", &tmp);
1193 cmd[(packet_size - 6)/2] = 0x0;
1194 command_run_line(cmd_ctx, cmd);
1197 gdb_put_packet(connection, "OK", 2);
1201 gdb_put_packet(connection, "", 0);
1204 int gdb_input(connection_t *connection)
1206 gdb_service_t *gdb_service = connection->service->priv;
1207 target_t *target = gdb_service->target;
1208 char packet[GDB_BUFFER_SIZE];
1211 gdb_connection_t *gdb_con = connection->priv;
1213 /* drain input buffer */
1216 packet_size = GDB_BUFFER_SIZE-1;
1217 if ((retval = gdb_get_packet(connection, packet, &packet_size)) != ERROR_OK)
1221 case ERROR_GDB_BUFFER_TOO_SMALL:
1222 ERROR("BUG: buffer supplied for gdb packet was too small");
1224 case ERROR_SERVER_REMOTE_CLOSED:
1225 return ERROR_SERVER_REMOTE_CLOSED;
1227 ERROR("BUG: unexpected error");
1232 /* terminate with zero */
1233 packet[packet_size] = 0;
1235 DEBUG("recevied packet: '%s'", packet);
1237 if (packet_size > 0)
1243 /* Hct... -- set thread
1244 * we don't have threads, send empty reply */
1245 gdb_put_packet(connection, NULL, 0);
1248 gdb_query_packet(connection, packet, packet_size);
1251 retval = gdb_get_registers_packet(connection, target, packet, packet_size);
1254 retval = gdb_set_registers_packet(connection, target, packet, packet_size);
1257 retval = gdb_get_register_packet(connection, target, packet, packet_size);
1260 retval = gdb_set_register_packet(connection, target, packet, packet_size);
1263 retval = gdb_read_memory_packet(connection, target, packet, packet_size);
1266 retval = gdb_write_memory_packet(connection, target, packet, packet_size);
1270 retval = gdb_breakpoint_watchpoint_packet(connection, target, packet, packet_size);
1273 gdb_last_signal_packet(connection, target, packet, packet_size);
1277 gdb_step_continue_packet(connection, target, packet, packet_size);
1280 target->type->resume(target, 1, 0, 1, 0);
1281 gdb_put_packet(connection, "OK", 2);
1284 if ((retval = gdb_write_memory_binary_packet(connection, target, packet, packet_size)) != ERROR_OK)
1288 gdb_put_packet(connection, "OK", 2);
1289 return ERROR_SERVER_REMOTE_CLOSED;
1291 /* ignore unkown packets */
1292 DEBUG("ignoring 0x%2.2x packet", packet[0]);
1293 gdb_put_packet(connection, NULL, 0);
1297 /* if a packet handler returned an error, exit input loop */
1298 if (retval != ERROR_OK)
1302 if (gdb_con->ctrl_c)
1304 if (target->state == TARGET_RUNNING)
1306 target->type->halt(target);
1307 gdb_con->ctrl_c = 0;
1311 } while (gdb_con->buf_cnt > 0);
1318 gdb_service_t *gdb_service;
1319 target_t *target = targets;
1324 WARNING("no gdb ports allocated as no target has been specified");
1330 WARNING("no gdb port specified, using default port 3333");
1336 char service_name[8];
1338 snprintf(service_name, 8, "gdb-%2.2i", i);
1340 gdb_service = malloc(sizeof(gdb_service_t));
1341 gdb_service->target = target;
1343 add_service("gdb", CONNECTION_GDB, gdb_port + i, 1, gdb_new_connection, gdb_input, gdb_connection_closed, gdb_service);
1345 DEBUG("gdb service for target %s at port %i", target->type->name, gdb_port + i);
1348 target = target->next;
1354 /* daemon configuration command gdb_port */
1355 int handle_gdb_port_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
1360 /* only if the port wasn't overwritten by cmdline */
1362 gdb_port = strtoul(args[0], NULL, 0);
1367 int gdb_register_commands(command_context_t *command_context)
1369 register_command(command_context, NULL, "gdb_port", handle_gdb_port_command,
1370 COMMAND_CONFIG, "");