1 /***************************************************************************
2 * Copyright (C) 2005 by Dominic Rath *
3 * Dominic.Rath@gmx.de *
5 * Copyright (C) 2007,2008 Øyvind Harboe *
6 * oyvind.harboe@zylin.com *
8 * This program is free software; you can redistribute it and/or modify *
9 * it under the terms of the GNU General Public License as published by *
10 * the Free Software Foundation; either version 2 of the License, or *
11 * (at your option) any later version. *
13 * This program is distributed in the hope that it will be useful, *
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
16 * GNU General Public License for more details. *
18 * You should have received a copy of the GNU General Public License *
19 * along with this program; if not, write to the *
20 * Free Software Foundation, Inc., *
21 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
22 ***************************************************************************/
27 #include "replacements.h"
29 #include "gdb_server.h"
33 #include "binarybuffer.h"
35 #include "breakpoints.h"
37 #include "target_request.h"
38 #include "configuration.h"
46 #define _DEBUG_GDB_IO_
49 extern int gdb_error(connection_t
*connection
, int retval
);
50 static unsigned short gdb_port
;
51 static const char *DIGITS
= "0123456789abcdef";
53 static void gdb_log_callback(void *priv
, const char *file
, int line
,
54 const char *function
, const char *string
);
64 /* target behaviour on gdb detach */
65 enum gdb_detach_mode detach_mode
= GDB_DETACH_RESUME
;
67 /* set if we are sending a memory map to gdb
68 * via qXfer:memory-map:read packet */
69 /* enabled by default*/
70 int gdb_use_memory_map
= 1;
71 /* enabled by default*/
72 int gdb_flash_program
= 1;
74 /* if set, data aborts cause an error to be reported in memory read packets
75 * see the code in gdb_read_memory_packet() for further explanations */
76 int gdb_report_data_abort
= 0;
78 int gdb_last_signal(target_t
*target
)
80 switch (target
->debug_reason
)
82 case DBG_REASON_DBGRQ
:
83 return 0x2; /* SIGINT */
84 case DBG_REASON_BREAKPOINT
:
85 case DBG_REASON_WATCHPOINT
:
86 case DBG_REASON_WPTANDBKPT
:
87 return 0x05; /* SIGTRAP */
88 case DBG_REASON_SINGLESTEP
:
89 return 0x05; /* SIGTRAP */
90 case DBG_REASON_NOTHALTED
:
91 return 0x0; /* no signal... shouldn't happen */
93 LOG_USER("undefined debug reason %d - target needs reset", target
->debug_reason
);
98 int check_pending(connection_t
*connection
, int timeout_s
, int *got_data
)
100 /* a non-blocking socket will block if there is 0 bytes available on the socket,
101 * but return with as many bytes as are available immediately
105 gdb_connection_t
*gdb_con
= connection
->priv
;
111 if (gdb_con
->buf_cnt
>0)
118 FD_SET(connection
->fd
, &read_fds
);
120 tv
.tv_sec
= timeout_s
;
122 if (select(connection
->fd
+ 1, &read_fds
, NULL
, NULL
, &tv
) == 0)
124 /* This can typically be because a "monitor" command took too long
125 * before printing any progress messages
129 return ERROR_GDB_TIMEOUT
;
135 *got_data
=FD_ISSET(connection
->fd
, &read_fds
)!=0;
139 int gdb_get_char(connection_t
*connection
, int* next_char
)
141 gdb_connection_t
*gdb_con
= connection
->priv
;
144 #ifdef _DEBUG_GDB_IO_
148 if (gdb_con
->buf_cnt
-- > 0)
150 *next_char
= *(gdb_con
->buf_p
++);
151 if (gdb_con
->buf_cnt
> 0)
152 connection
->input_pending
= 1;
154 connection
->input_pending
= 0;
156 #ifdef _DEBUG_GDB_IO_
157 LOG_DEBUG("returned char '%c' (0x%2.2x)", *next_char
, *next_char
);
165 retval
=check_pending(connection
, 1, NULL
);
166 if (retval
!=ERROR_OK
)
168 gdb_con
->buf_cnt
= read_socket(connection
->fd
, gdb_con
->buffer
, GDB_BUFFER_SIZE
);
169 if (gdb_con
->buf_cnt
> 0)
173 if (gdb_con
->buf_cnt
== 0)
176 return ERROR_SERVER_REMOTE_CLOSED
;
180 errno
= WSAGetLastError();
187 case WSAECONNABORTED
:
189 return ERROR_SERVER_REMOTE_CLOSED
;
192 return ERROR_SERVER_REMOTE_CLOSED
;
194 LOG_ERROR("read: %d", errno
);
205 return ERROR_SERVER_REMOTE_CLOSED
;
208 return ERROR_SERVER_REMOTE_CLOSED
;
210 LOG_ERROR("read: %s", strerror(errno
));
212 return ERROR_SERVER_REMOTE_CLOSED
;
217 #ifdef _DEBUG_GDB_IO_
218 debug_buffer
= malloc(gdb_con
->buf_cnt
+ 1);
219 memcpy(debug_buffer
, gdb_con
->buffer
, gdb_con
->buf_cnt
);
220 debug_buffer
[gdb_con
->buf_cnt
] = 0;
221 LOG_DEBUG("received '%s'", debug_buffer
);
225 gdb_con
->buf_p
= gdb_con
->buffer
;
227 *next_char
= *(gdb_con
->buf_p
++);
228 if (gdb_con
->buf_cnt
> 0)
229 connection
->input_pending
= 1;
231 connection
->input_pending
= 0;
232 #ifdef _DEBUG_GDB_IO_
233 LOG_DEBUG("returned char '%c' (0x%2.2x)", *next_char
, *next_char
);
239 int gdb_putback_char(connection_t
*connection
, int last_char
)
241 gdb_connection_t
*gdb_con
= connection
->priv
;
243 if (gdb_con
->buf_p
> gdb_con
->buffer
)
245 *(--gdb_con
->buf_p
) = last_char
;
250 LOG_ERROR("BUG: couldn't put character back");
256 /* The only way we can detect that the socket is closed is the first time
257 * we write to it, we will fail. Subsequent write operations will
258 * succeed. Shudder! */
259 int gdb_write(connection_t
*connection
, void *data
, int len
)
261 gdb_connection_t
*gdb_con
= connection
->priv
;
263 return ERROR_SERVER_REMOTE_CLOSED
;
265 if (write_socket(connection
->fd
, data
, len
) == len
)
270 return ERROR_SERVER_REMOTE_CLOSED
;
273 int gdb_put_packet_inner(connection_t
*connection
, char *buffer
, int len
)
276 unsigned char my_checksum
= 0;
277 #ifdef _DEBUG_GDB_IO_
282 gdb_connection_t
*gdb_con
= connection
->priv
;
284 for (i
= 0; i
< len
; i
++)
285 my_checksum
+= buffer
[i
];
287 #ifdef _DEBUG_GDB_IO_
289 * At this point we should have nothing in the input queue from GDB,
290 * however sometimes '-' is sent even though we've already received
291 * an ACK (+) for everything we've sent off.
296 if ((retval
=check_pending(connection
, 0, &gotdata
))!=ERROR_OK
)
300 if ((retval
= gdb_get_char(connection
, &reply
)) != ERROR_OK
)
302 LOG_WARNING("Discard unexpected char %c", reply
);
308 #ifdef _DEBUG_GDB_IO_
309 debug_buffer
= malloc(len
+ 1);
310 memcpy(debug_buffer
, buffer
, len
);
311 debug_buffer
[len
] = 0;
312 LOG_DEBUG("sending packet '$%s#%2.2x'", debug_buffer
, my_checksum
);
316 char local_buffer
[1024];
317 local_buffer
[0] = '$';
318 if (len
+4 <= sizeof(local_buffer
))
320 /* performance gain on smaller packets by only a single call to gdb_write() */
321 memcpy(local_buffer
+1, buffer
, len
++);
322 local_buffer
[len
++] = '#';
323 local_buffer
[len
++] = DIGITS
[(my_checksum
>> 4) & 0xf];
324 local_buffer
[len
++] = DIGITS
[my_checksum
& 0xf];
325 gdb_write(connection
, local_buffer
, len
);
329 /* larger packets are transmitted directly from caller supplied buffer
330 by several calls to gdb_write() to avoid dynamic allocation */
331 local_buffer
[1] = '#';
332 local_buffer
[2] = DIGITS
[(my_checksum
>> 4) & 0xf];
333 local_buffer
[3] = DIGITS
[my_checksum
& 0xf];
334 gdb_write(connection
, local_buffer
, 1);
335 gdb_write(connection
, buffer
, len
);
336 gdb_write(connection
, local_buffer
+1, 3);
339 if ((retval
= gdb_get_char(connection
, &reply
)) != ERROR_OK
)
344 else if (reply
== '-')
346 /* Stop sending output packets for now */
347 log_remove_callback(gdb_log_callback
, connection
);
348 LOG_WARNING("negative reply, retrying");
350 else if (reply
== 0x3)
353 if ((retval
= gdb_get_char(connection
, &reply
)) != ERROR_OK
)
357 else if (reply
== '-')
359 /* Stop sending output packets for now */
360 log_remove_callback(gdb_log_callback
, connection
);
361 LOG_WARNING("negative reply, retrying");
365 LOG_ERROR("unknown character 0x%2.2x in reply, dropping connection", reply
);
367 return ERROR_SERVER_REMOTE_CLOSED
;
372 LOG_ERROR("unknown character 0x%2.2x in reply, dropping connection", reply
);
374 return ERROR_SERVER_REMOTE_CLOSED
;
378 return ERROR_SERVER_REMOTE_CLOSED
;
383 int gdb_put_packet(connection_t
*connection
, char *buffer
, int len
)
385 gdb_connection_t
*gdb_con
= connection
->priv
;
387 int retval
= gdb_put_packet_inner(connection
, buffer
, len
);
392 int gdb_get_packet_inner(connection_t
*connection
, char *buffer
, int *len
)
398 unsigned char my_checksum
= 0;
399 gdb_connection_t
*gdb_con
= connection
->priv
;
405 if ((retval
= gdb_get_char(connection
, &character
)) != ERROR_OK
)
408 #ifdef _DEBUG_GDB_IO_
409 LOG_DEBUG("character: '%c'", character
);
417 /* gdb sends a dummy ack '+' at every remote connect - see remote_start_remote (remote.c)
418 * incase anyone tries to debug why they receive this warning every time */
419 LOG_WARNING("acknowledgment received, but no packet pending");
422 LOG_WARNING("negative acknowledgment, but no packet pending");
429 LOG_WARNING("ignoring character 0x%x", character
);
432 } while (character
!= '$');
437 gdb_connection_t
*gdb_con
= connection
->priv
;
440 /* The common case is that we have an entire packet with no escape chars.
441 * We need to leave at least 2 bytes in the buffer to have
442 * gdb_get_char() update various bits and bobs correctly.
444 if ((gdb_con
->buf_cnt
> 2) && ((gdb_con
->buf_cnt
+count
) < *len
))
446 /* The compiler will struggle a bit with constant propagation and
447 * aliasing, so we help it by showing that these values do not
448 * change inside the loop
451 char *buf
= gdb_con
->buf_p
;
452 int run
= gdb_con
->buf_cnt
- 2;
459 if (character
== '#')
461 /* Danger! character can be '#' when esc is
462 * used so we need an explicit boolean for done here.
468 if (character
== '}')
470 /* data transmitted in binary mode (X packet)
471 * uses 0x7d as escape character */
472 my_checksum
+= character
& 0xff;
475 my_checksum
+= character
& 0xff;
476 buffer
[count
++] = (character
^ 0x20) & 0xff;
479 my_checksum
+= character
& 0xff;
480 buffer
[count
++] = character
& 0xff;
484 gdb_con
->buf_cnt
-= i
;
490 LOG_ERROR("packet buffer too small");
491 return ERROR_GDB_BUFFER_TOO_SMALL
;
494 if ((retval
= gdb_get_char(connection
, &character
)) != ERROR_OK
)
497 if (character
== '#')
500 if (character
== '}')
502 /* data transmitted in binary mode (X packet)
503 * uses 0x7d as escape character */
504 my_checksum
+= character
& 0xff;
505 if ((retval
= gdb_get_char(connection
, &character
)) != ERROR_OK
)
507 my_checksum
+= character
& 0xff;
508 buffer
[count
++] = (character
^ 0x20) & 0xff;
512 my_checksum
+= character
& 0xff;
513 buffer
[count
++] = character
& 0xff;
520 if ((retval
= gdb_get_char(connection
, &character
)) != ERROR_OK
)
522 checksum
[0] = character
;
523 if ((retval
= gdb_get_char(connection
, &character
)) != ERROR_OK
)
525 checksum
[1] = character
;
528 if (my_checksum
== strtoul(checksum
, NULL
, 16))
530 gdb_write(connection
, "+", 1);
534 LOG_WARNING("checksum error, requesting retransmission");
535 gdb_write(connection
, "-", 1);
538 return ERROR_SERVER_REMOTE_CLOSED
;
543 int gdb_get_packet(connection_t
*connection
, char *buffer
, int *len
)
545 gdb_connection_t
*gdb_con
= connection
->priv
;
547 int retval
= gdb_get_packet_inner(connection
, buffer
, len
);
552 int gdb_output_con(connection_t
*connection
, const char* line
)
557 bin_size
= strlen(line
);
559 hex_buffer
= malloc(bin_size
*2 + 2);
560 if (hex_buffer
== NULL
)
561 return ERROR_GDB_BUFFER_TOO_SMALL
;
564 for (i
=0; i
<bin_size
; i
++)
565 snprintf(hex_buffer
+ 1 + i
*2, 3, "%2.2x", line
[i
]);
566 hex_buffer
[bin_size
*2+1] = 0;
568 gdb_put_packet(connection
, hex_buffer
, bin_size
*2 + 1);
574 int gdb_output(struct command_context_s
*context
, const char* line
)
576 /* this will be dumped to the log and also sent as an O packet if possible */
577 LOG_USER_N("%s", line
);
581 int gdb_program_handler(struct target_s
*target
, enum target_event event
, void *priv
)
583 struct command_context_s
*cmd_ctx
= priv
;
585 target_invoke_script(cmd_ctx
, target
, "gdb_program");
586 jtag_execute_queue();
591 static void gdb_frontend_halted(struct target_s
*target
, connection_t
*connection
)
593 gdb_connection_t
*gdb_connection
= connection
->priv
;
595 /* In the GDB protocol when we are stepping or coninuing execution,
596 * we have a lingering reply. Upon receiving a halted event
597 * when we have that lingering packet, we reply to the original
598 * step or continue packet.
600 * Executing monitor commands can bring the target in and
601 * out of the running state so we'll see lots of TARGET_EVENT_XXX
602 * that are to be ignored.
604 if (gdb_connection
->frontend_state
== TARGET_RUNNING
)
608 /* stop forwarding log packets! */
609 log_remove_callback(gdb_log_callback
, connection
);
611 if (gdb_connection
->ctrl_c
)
614 gdb_connection
->ctrl_c
= 0;
618 signal
= gdb_last_signal(target
);
621 snprintf(sig_reply
, 4, "T%2.2x", signal
);
622 gdb_put_packet(connection
, sig_reply
, 3);
623 gdb_connection
->frontend_state
= TARGET_HALTED
;
627 int gdb_target_callback_event_handler(struct target_s
*target
, enum target_event event
, void *priv
)
629 connection_t
*connection
= priv
;
633 case TARGET_EVENT_HALTED
:
634 gdb_frontend_halted(target
, connection
);
636 case TARGET_EVENT_GDB_PROGRAM
:
637 gdb_program_handler(target
, event
, connection
->cmd_ctx
);
647 int gdb_new_connection(connection_t
*connection
)
649 gdb_connection_t
*gdb_connection
= malloc(sizeof(gdb_connection_t
));
650 gdb_service_t
*gdb_service
= connection
->service
->priv
;
654 connection
->priv
= gdb_connection
;
656 /* initialize gdb connection information */
657 gdb_connection
->buf_p
= gdb_connection
->buffer
;
658 gdb_connection
->buf_cnt
= 0;
659 gdb_connection
->ctrl_c
= 0;
660 gdb_connection
->frontend_state
= TARGET_HALTED
;
661 gdb_connection
->vflash_image
= NULL
;
662 gdb_connection
->closed
= 0;
663 gdb_connection
->busy
= 0;
665 /* send ACK to GDB for debug request */
666 gdb_write(connection
, "+", 1);
668 /* output goes through gdb connection */
669 command_set_output_handler(connection
->cmd_ctx
, gdb_output
, connection
);
671 /* we must remove all breakpoints registered to the target as a previous
672 * GDB session could leave dangling breakpoints if e.g. communication
675 breakpoint_clear_target(gdb_service
->target
);
676 watchpoint_clear_target(gdb_service
->target
);
678 /* register callback to be informed about target events */
679 target_register_event_callback(gdb_target_callback_event_handler
, connection
);
681 /* a gdb session just attached, try to put the target in halt mode.
685 * If the halt fails(e.g. target needs a reset, JTAG communication not
686 * working, etc.), then the GDB connect will succeed as
687 * the get_gdb_reg_list() will lie and return a register list with
690 * This allows GDB monitor commands to be run from a GDB init script to
691 * initialize the target
693 * Also, since the halt() is asynchronous target connect will be
694 * instantaneous and thus avoiding annoying timeout problems during
697 target_halt(gdb_service
->target
);
698 /* FIX!!!! could extended-remote work better here?
700 * wait a tiny bit for halted state or we just continue. The
701 * GDB register packet will then contain garbage
703 target_wait_state(gdb_service
->target
, TARGET_HALTED
, 500);
705 /* remove the initial ACK from the incoming buffer */
706 if ((retval
= gdb_get_char(connection
, &initial_ack
)) != ERROR_OK
)
709 /* FIX!!!??? would we actually ever receive a + here???
712 if (initial_ack
!= '+')
713 gdb_putback_char(connection
, initial_ack
);
718 int gdb_connection_closed(connection_t
*connection
)
720 gdb_service_t
*gdb_service
= connection
->service
->priv
;
721 gdb_connection_t
*gdb_connection
= connection
->priv
;
723 /* see if an image built with vFlash commands is left */
724 if (gdb_connection
->vflash_image
)
726 image_close(gdb_connection
->vflash_image
);
727 free(gdb_connection
->vflash_image
);
728 gdb_connection
->vflash_image
= NULL
;
731 /* if this connection registered a debug-message receiver delete it */
732 delete_debug_msg_receiver(connection
->cmd_ctx
, gdb_service
->target
);
734 if (connection
->priv
)
736 free(connection
->priv
);
737 connection
->priv
= NULL
;
741 LOG_ERROR("BUG: connection->priv == NULL");
744 target_unregister_event_callback(gdb_target_callback_event_handler
, connection
);
745 log_remove_callback(gdb_log_callback
, connection
);
750 void gdb_send_error(connection_t
*connection
, u8 the_error
)
753 snprintf(err
, 4, "E%2.2X", the_error
);
754 gdb_put_packet(connection
, err
, 3);
757 int gdb_last_signal_packet(connection_t
*connection
, target_t
*target
, char* packet
, int packet_size
)
762 signal
= gdb_last_signal(target
);
764 snprintf(sig_reply
, 4, "S%2.2x", signal
);
765 gdb_put_packet(connection
, sig_reply
, 3);
770 /* Convert register to string of bits. NB! The # of bits in the
771 * register might be non-divisible by 8(a byte), in which
772 * case an entire byte is shown. */
773 void gdb_str_to_target(target_t
*target
, char *tstr
, reg_t
*reg
)
780 buf_len
= CEIL(reg
->size
, 8);
782 for (i
= 0; i
< buf_len
; i
++)
784 tstr
[i
*2] = DIGITS
[(buf
[i
]>>4) & 0xf];
785 tstr
[i
*2+1] = DIGITS
[buf
[i
]&0xf];
789 void gdb_target_to_str(target_t
*target
, char *tstr
, char *str
)
791 int str_len
= strlen(tstr
);
796 LOG_ERROR("BUG: gdb value with uneven number of characters encountered");
800 for (i
= 0; i
< str_len
; i
+=2)
802 str
[str_len
- i
- 1] = tstr
[i
+ 1];
803 str
[str_len
- i
- 2] = tstr
[i
];
807 int gdb_get_registers_packet(connection_t
*connection
, target_t
*target
, char* packet
, int packet_size
)
812 int reg_packet_size
= 0;
817 #ifdef _DEBUG_GDB_IO_
821 if ((retval
= target
->type
->get_gdb_reg_list(target
, ®_list
, ®_list_size
)) != ERROR_OK
)
823 return gdb_error(connection
, retval
);
826 for (i
= 0; i
< reg_list_size
; i
++)
828 reg_packet_size
+= reg_list
[i
]->size
;
831 reg_packet
= malloc(CEIL(reg_packet_size
, 8) * 2);
832 reg_packet_p
= reg_packet
;
834 for (i
= 0; i
< reg_list_size
; i
++)
836 gdb_str_to_target(target
, reg_packet_p
, reg_list
[i
]);
837 reg_packet_p
+= CEIL(reg_list
[i
]->size
, 8) * 2;
840 #ifdef _DEBUG_GDB_IO_
843 reg_packet_p
= strndup(reg_packet
, CEIL(reg_packet_size
, 8) * 2);
844 LOG_DEBUG("reg_packet: %s", reg_packet_p
);
849 gdb_put_packet(connection
, reg_packet
, CEIL(reg_packet_size
, 8) * 2);
857 int gdb_set_registers_packet(connection_t
*connection
, target_t
*target
, char *packet
, int packet_size
)
865 #ifdef _DEBUG_GDB_IO_
869 /* skip command character */
875 LOG_WARNING("GDB set_registers packet with uneven characters received, dropping connection");
876 return ERROR_SERVER_REMOTE_CLOSED
;
879 if ((retval
= target
->type
->get_gdb_reg_list(target
, ®_list
, ®_list_size
)) != ERROR_OK
)
881 return gdb_error(connection
, retval
);
885 for (i
= 0; i
< reg_list_size
; i
++)
889 reg_arch_type_t
*arch_type
;
891 /* convert from GDB-string (target-endian) to hex-string (big-endian) */
892 hex_buf
= malloc(CEIL(reg_list
[i
]->size
, 8) * 2);
893 gdb_target_to_str(target
, packet_p
, hex_buf
);
895 /* convert hex-string to binary buffer */
896 bin_buf
= malloc(CEIL(reg_list
[i
]->size
, 8));
897 str_to_buf(hex_buf
, CEIL(reg_list
[i
]->size
, 8) * 2, bin_buf
, reg_list
[i
]->size
, 16);
899 /* get register arch_type, and call set method */
900 arch_type
= register_get_arch_type(reg_list
[i
]->arch_type
);
901 if (arch_type
== NULL
)
903 LOG_ERROR("BUG: encountered unregistered arch type");
906 arch_type
->set(reg_list
[i
], bin_buf
);
908 /* advance packet pointer */
909 packet_p
+= (CEIL(reg_list
[i
]->size
, 8) * 2);
915 /* free reg_t *reg_list[] array allocated by get_gdb_reg_list */
918 gdb_put_packet(connection
, "OK", 2);
923 int gdb_get_register_packet(connection_t
*connection
, target_t
*target
, char *packet
, int packet_size
)
926 int reg_num
= strtoul(packet
+ 1, NULL
, 16);
931 #ifdef _DEBUG_GDB_IO_
935 if ((retval
= target
->type
->get_gdb_reg_list(target
, ®_list
, ®_list_size
)) != ERROR_OK
)
937 return gdb_error(connection
, retval
);
940 if (reg_list_size
<= reg_num
)
942 LOG_ERROR("gdb requested a non-existing register");
946 reg_packet
= malloc(CEIL(reg_list
[reg_num
]->size
, 8) * 2);
948 gdb_str_to_target(target
, reg_packet
, reg_list
[reg_num
]);
950 gdb_put_packet(connection
, reg_packet
, CEIL(reg_list
[reg_num
]->size
, 8) * 2);
958 int gdb_set_register_packet(connection_t
*connection
, target_t
*target
, char *packet
, int packet_size
)
963 int reg_num
= strtoul(packet
+ 1, &separator
, 16);
967 reg_arch_type_t
*arch_type
;
971 if ((retval
= target
->type
->get_gdb_reg_list(target
, ®_list
, ®_list_size
)) != ERROR_OK
)
973 return gdb_error(connection
, retval
);
976 if (reg_list_size
< reg_num
)
978 LOG_ERROR("gdb requested a non-existing register");
979 return ERROR_SERVER_REMOTE_CLOSED
;
982 if (*separator
!= '=')
984 LOG_ERROR("GDB 'set register packet', but no '=' following the register number");
985 return ERROR_SERVER_REMOTE_CLOSED
;
988 /* convert from GDB-string (target-endian) to hex-string (big-endian) */
989 hex_buf
= malloc(CEIL(reg_list
[reg_num
]->size
, 8) * 2);
990 gdb_target_to_str(target
, separator
+ 1, hex_buf
);
992 /* convert hex-string to binary buffer */
993 bin_buf
= malloc(CEIL(reg_list
[reg_num
]->size
, 8));
994 str_to_buf(hex_buf
, CEIL(reg_list
[reg_num
]->size
, 8) * 2, bin_buf
, reg_list
[reg_num
]->size
, 16);
996 /* get register arch_type, and call set method */
997 arch_type
= register_get_arch_type(reg_list
[reg_num
]->arch_type
);
998 if (arch_type
== NULL
)
1000 LOG_ERROR("BUG: encountered unregistered arch type");
1003 arch_type
->set(reg_list
[reg_num
], bin_buf
);
1005 gdb_put_packet(connection
, "OK", 2);
1014 int gdb_error(connection_t
*connection
, int retval
)
1018 case ERROR_TARGET_DATA_ABORT
:
1019 gdb_send_error(connection
, EIO
);
1021 case ERROR_TARGET_TRANSLATION_FAULT
:
1022 gdb_send_error(connection
, EFAULT
);
1024 case ERROR_TARGET_UNALIGNED_ACCESS
:
1025 gdb_send_error(connection
, EFAULT
);
1027 case ERROR_TARGET_NOT_HALTED
:
1028 gdb_send_error(connection
, EFAULT
);
1031 /* This could be that the target reset itself. */
1032 LOG_ERROR("unexpected error %i", retval
);
1033 gdb_send_error(connection
, EFAULT
);
1040 /* We don't have to worry about the default 2 second timeout for GDB packets,
1041 * because GDB breaks up large memory reads into smaller reads.
1043 * 8191 bytes by the looks of it. Why 8191 bytes instead of 8192?????
1045 int gdb_read_memory_packet(connection_t
*connection
, target_t
*target
, char *packet
, int packet_size
)
1054 int retval
= ERROR_OK
;
1056 /* skip command character */
1059 addr
= strtoul(packet
, &separator
, 16);
1061 if (*separator
!= ',')
1063 LOG_ERROR("incomplete read memory packet received, dropping connection");
1064 return ERROR_SERVER_REMOTE_CLOSED
;
1067 len
= strtoul(separator
+1, NULL
, 16);
1069 buffer
= malloc(len
);
1071 LOG_DEBUG("addr: 0x%8.8x, len: 0x%8.8x", addr
, len
);
1073 retval
= target_read_buffer(target
, addr
, len
, buffer
);
1075 if ((retval
== ERROR_TARGET_DATA_ABORT
) && (!gdb_report_data_abort
))
1077 /* TODO : Here we have to lie and send back all zero's lest stack traces won't work.
1078 * At some point this might be fixed in GDB, in which case this code can be removed.
1080 * OpenOCD developers are acutely aware of this problem, but there is nothing
1081 * gained by involving the user in this problem that hopefully will get resolved
1084 * http://sourceware.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gdb&pr=2395
1086 * For now, the default is to fix up things to make current GDB versions work.
1087 * This can be overwritten using the gdb_report_data_abort <'enable'|'disable'> command.
1089 memset(buffer
, 0, len
);
1093 if (retval
== ERROR_OK
)
1095 hex_buffer
= malloc(len
* 2 + 1);
1098 for (i
= 0; i
< len
; i
++)
1101 hex_buffer
[2 * i
] = DIGITS
[(t
>> 4) & 0xf];
1102 hex_buffer
[2 * i
+ 1] = DIGITS
[t
& 0xf];
1105 gdb_put_packet(connection
, hex_buffer
, len
* 2);
1111 retval
= gdb_error(connection
, retval
);
1119 int gdb_write_memory_packet(connection_t
*connection
, target_t
*target
, char *packet
, int packet_size
)
1130 /* skip command character */
1133 addr
= strtoul(packet
, &separator
, 16);
1135 if (*separator
!= ',')
1137 LOG_ERROR("incomplete write memory packet received, dropping connection");
1138 return ERROR_SERVER_REMOTE_CLOSED
;
1141 len
= strtoul(separator
+1, &separator
, 16);
1143 if (*(separator
++) != ':')
1145 LOG_ERROR("incomplete write memory packet received, dropping connection");
1146 return ERROR_SERVER_REMOTE_CLOSED
;
1149 buffer
= malloc(len
);
1151 LOG_DEBUG("addr: 0x%8.8x, len: 0x%8.8x", addr
, len
);
1153 for (i
=0; i
<len
; i
++)
1156 sscanf(separator
+ 2*i
, "%2x", &tmp
);
1160 retval
= target_write_buffer(target
, addr
, len
, buffer
);
1162 if (retval
== ERROR_OK
)
1164 gdb_put_packet(connection
, "OK", 2);
1168 retval
= gdb_error(connection
, retval
);
1176 int gdb_write_memory_binary_packet(connection_t
*connection
, target_t
*target
, char *packet
, int packet_size
)
1184 /* skip command character */
1187 addr
= strtoul(packet
, &separator
, 16);
1189 if (*separator
!= ',')
1191 LOG_ERROR("incomplete write memory binary packet received, dropping connection");
1192 return ERROR_SERVER_REMOTE_CLOSED
;
1195 len
= strtoul(separator
+1, &separator
, 16);
1197 if (*(separator
++) != ':')
1199 LOG_ERROR("incomplete write memory binary packet received, dropping connection");
1200 return ERROR_SERVER_REMOTE_CLOSED
;
1206 LOG_DEBUG("addr: 0x%8.8x, len: 0x%8.8x", addr
, len
);
1208 retval
= target_write_buffer(target
, addr
, len
, (u8
*)separator
);
1211 if (retval
== ERROR_OK
)
1213 gdb_put_packet(connection
, "OK", 2);
1217 if ((retval
= gdb_error(connection
, retval
)) != ERROR_OK
)
1224 int gdb_step_continue_packet(connection_t
*connection
, target_t
*target
, char *packet
, int packet_size
)
1228 int retval
=ERROR_OK
;
1232 if (packet_size
> 1)
1234 packet
[packet_size
] = 0;
1235 address
= strtoul(packet
+ 1, NULL
, 16);
1242 if (packet
[0] == 'c')
1244 LOG_DEBUG("continue");
1245 target_invoke_script(connection
->cmd_ctx
, target
, "pre_resume");
1246 retval
=target_resume(target
, current
, address
, 0, 0); /* resume at current address, don't handle breakpoints, not debugging */
1248 else if (packet
[0] == 's')
1251 retval
=target
->type
->step(target
, current
, address
, 0); /* step at current or address, don't handle breakpoints */
1256 int gdb_breakpoint_watchpoint_packet(connection_t
*connection
, target_t
*target
, char *packet
, int packet_size
)
1259 enum breakpoint_type bp_type
= BKPT_SOFT
/* dummy init to avoid warning */;
1260 enum watchpoint_rw wp_type
;
1268 type
= strtoul(packet
+ 1, &separator
, 16);
1270 if (type
== 0) /* memory breakpoint */
1271 bp_type
= BKPT_SOFT
;
1272 else if (type
== 1) /* hardware breakpoint */
1273 bp_type
= BKPT_HARD
;
1274 else if (type
== 2) /* write watchpoint */
1275 wp_type
= WPT_WRITE
;
1276 else if (type
== 3) /* read watchpoint */
1278 else if (type
== 4) /* access watchpoint */
1279 wp_type
= WPT_ACCESS
;
1281 if (*separator
!= ',')
1283 LOG_ERROR("incomplete breakpoint/watchpoint packet received, dropping connection");
1284 return ERROR_SERVER_REMOTE_CLOSED
;
1287 address
= strtoul(separator
+1, &separator
, 16);
1289 if (*separator
!= ',')
1291 LOG_ERROR("incomplete breakpoint/watchpoint packet received, dropping connection");
1292 return ERROR_SERVER_REMOTE_CLOSED
;
1295 size
= strtoul(separator
+1, &separator
, 16);
1301 if (packet
[0] == 'Z')
1303 if ((retval
= breakpoint_add(target
, address
, size
, bp_type
)) != ERROR_OK
)
1305 if ((retval
= gdb_error(connection
, retval
)) != ERROR_OK
)
1310 gdb_put_packet(connection
, "OK", 2);
1315 breakpoint_remove(target
, address
);
1316 gdb_put_packet(connection
, "OK", 2);
1323 if (packet
[0] == 'Z')
1325 if ((retval
= watchpoint_add(target
, address
, size
, type
-2, 0, 0xffffffffu
)) != ERROR_OK
)
1327 if ((retval
= gdb_error(connection
, retval
)) != ERROR_OK
)
1332 gdb_put_packet(connection
, "OK", 2);
1337 watchpoint_remove(target
, address
);
1338 gdb_put_packet(connection
, "OK", 2);
1349 /* print out a string and allocate more space as needed, mainly used for XML at this point */
1350 void xml_printf(int *retval
, char **xml
, int *pos
, int *size
, const char *fmt
, ...)
1352 if (*retval
!= ERROR_OK
)
1360 if ((*xml
== NULL
) || (!first
))
1362 /* start by 0 to exercise all the code paths.
1363 * Need minimum 2 bytes to fit 1 char and 0 terminator. */
1365 *size
= *size
* 2 + 2;
1367 *xml
= realloc(*xml
, *size
);
1372 *retval
= ERROR_SERVER_REMOTE_CLOSED
;
1380 ret
= vsnprintf(*xml
+ *pos
, *size
- *pos
, fmt
, ap
);
1382 if ((ret
> 0) && ((ret
+ 1) < *size
- *pos
))
1387 /* there was just enough or not enough space, allocate more. */
1392 static int decode_xfer_read(char *buf
, char **annex
, int *ofs
, unsigned int *len
)
1396 /* Extract and NUL-terminate the annex. */
1398 while (*buf
&& *buf
!= ':')
1404 /* After the read marker and annex, qXfer looks like a
1405 * traditional 'm' packet. */
1407 *ofs
= strtoul(buf
, &separator
, 16);
1409 if (*separator
!= ',')
1412 *len
= strtoul(separator
+1, NULL
, 16);
1417 int gdb_calc_blocksize(flash_bank_t
*bank
)
1420 int block_size
= 0xffffffff;
1422 /* loop through all sectors and return smallest sector size */
1424 for (i
= 0; i
< bank
->num_sectors
; i
++)
1426 if (bank
->sectors
[i
].size
< block_size
)
1427 block_size
= bank
->sectors
[i
].size
;
1433 static int compare_bank (const void * a
, const void * b
)
1435 flash_bank_t
*b1
, *b2
;
1436 b1
=*((flash_bank_t
**)a
);
1437 b2
=*((flash_bank_t
**)b
);
1439 if (b1
->base
==b2
->base
)
1442 } else if (b1
->base
>b2
->base
)
1451 int gdb_query_packet(connection_t
*connection
, target_t
*target
, char *packet
, int packet_size
)
1453 command_context_t
*cmd_ctx
= connection
->cmd_ctx
;
1455 if (strstr(packet
, "qRcmd,"))
1457 if (packet_size
> 6)
1461 cmd
= malloc((packet_size
- 6)/2 + 1);
1462 for (i
=0; i
< (packet_size
- 6)/2; i
++)
1465 sscanf(packet
+ 6 + 2*i
, "%2x", &tmp
);
1468 cmd
[(packet_size
- 6)/2] = 0x0;
1470 /* We want to print all debug output to GDB connection */
1471 log_add_callback(gdb_log_callback
, connection
);
1472 target_call_timer_callbacks_now();
1473 command_run_line(cmd_ctx
, cmd
);
1474 target_call_timer_callbacks_now();
1475 log_remove_callback(gdb_log_callback
, connection
);
1478 gdb_put_packet(connection
, "OK", 2);
1481 else if (strstr(packet
, "qCRC:"))
1483 if (packet_size
> 5)
1492 /* skip command character */
1495 addr
= strtoul(packet
, &separator
, 16);
1497 if (*separator
!= ',')
1499 LOG_ERROR("incomplete read memory packet received, dropping connection");
1500 return ERROR_SERVER_REMOTE_CLOSED
;
1503 len
= strtoul(separator
+ 1, NULL
, 16);
1505 retval
= target_checksum_memory(target
, addr
, len
, &checksum
);
1507 if (retval
== ERROR_OK
)
1509 snprintf(gdb_reply
, 10, "C%8.8x", checksum
);
1510 gdb_put_packet(connection
, gdb_reply
, 9);
1514 if ((retval
= gdb_error(connection
, retval
)) != ERROR_OK
)
1521 else if (strstr(packet
, "qSupported"))
1523 /* we currently support packet size and qXfer:memory-map:read (if enabled)
1524 * disable qXfer:features:read for the moment */
1525 int retval
= ERROR_OK
;
1526 char *buffer
= NULL
;
1530 xml_printf(&retval
, &buffer
, &pos
, &size
,
1531 "PacketSize=%x;qXfer:memory-map:read%c;qXfer:features:read-",
1532 (GDB_BUFFER_SIZE
- 1), ((gdb_use_memory_map
== 1)&&(flash_get_bank_count()>0)) ? '+' : '-');
1534 if (retval
!= ERROR_OK
)
1536 gdb_send_error(connection
, 01);
1540 gdb_put_packet(connection
, buffer
, strlen(buffer
));
1545 else if (strstr(packet
, "qXfer:memory-map:read::")&&(flash_get_bank_count()>0))
1547 /* We get away with only specifying flash here. Regions that are not
1548 * specified are treated as if we provided no memory map(if not we
1549 * could detect the holes and mark them as RAM).
1550 * Normally we only execute this code once, but no big deal if we
1551 * have to regenerate it a couple of times. */
1557 int retval
= ERROR_OK
;
1564 /* skip command character */
1567 offset
= strtoul(packet
, &separator
, 16);
1568 length
= strtoul(separator
+ 1, &separator
, 16);
1570 xml_printf(&retval
, &xml
, &pos
, &size
, "<memory-map>\n");
1573 sort banks in ascending order, we need to make non-flash memory be ram(or rather
1574 read/write) by default for GDB.
1575 GDB does not have a concept of non-cacheable read/write memory.
1577 flash_bank_t
**banks
=malloc(sizeof(flash_bank_t
*)*flash_get_bank_count());
1580 for (i
=0; i
<flash_get_bank_count(); i
++)
1582 p
= get_flash_bank_by_num(i
);
1586 retval
= ERROR_FAIL
;
1587 gdb_send_error(connection
, retval
);
1593 qsort(banks
, flash_get_bank_count(), sizeof(flash_bank_t
*), compare_bank
);
1596 for (i
=0; i
<flash_get_bank_count(); i
++)
1600 if (ram_start
<p
->base
)
1602 xml_printf(&retval
, &xml
, &pos
, &size
, "<memory type=\"ram\" start=\"0x%x\" length=\"0x%x\"/>\n",
1603 ram_start
, p
->base
-ram_start
);
1606 /* if device has uneven sector sizes, eg. str7, lpc
1607 * we pass the smallest sector size to gdb memory map */
1608 blocksize
= gdb_calc_blocksize(p
);
1610 xml_printf(&retval
, &xml
, &pos
, &size
, "<memory type=\"flash\" start=\"0x%x\" length=\"0x%x\">\n" \
1611 "<property name=\"blocksize\">0x%x</property>\n" \
1613 p
->base
, p
->size
, blocksize
);
1614 ram_start
=p
->base
+p
->size
;
1618 xml_printf(&retval
, &xml
, &pos
, &size
, "<memory type=\"ram\" start=\"0x%x\" length=\"0x%x\"/>\n",
1619 ram_start
, 0-ram_start
);
1622 /* a flash chip could be at the very end of the 32 bit address space, in which case
1623 ram_start will be precisely 0 */
1629 xml_printf(&retval
, &xml
, &pos
, &size
, "</memory-map>\n");
1631 if (retval
!= ERROR_OK
)
1633 gdb_send_error(connection
, retval
);
1637 if (offset
+ length
> pos
)
1639 length
= pos
- offset
;
1642 char *t
= malloc(length
+ 1);
1644 memcpy(t
+ 1, xml
+ offset
, length
);
1645 gdb_put_packet(connection
, t
, length
+ 1);
1651 else if (strstr(packet
, "qXfer:features:read:"))
1656 int retval
= ERROR_OK
;
1659 unsigned int length
;
1662 /* skip command character */
1665 if (decode_xfer_read(packet
, &annex
, &offset
, &length
) < 0)
1667 gdb_send_error(connection
, 01);
1671 if (strcmp(annex
, "target.xml") != 0)
1673 gdb_send_error(connection
, 01);
1677 xml_printf(&retval
, &xml
, &pos
, &size
, \
1678 "l<target version=\"1.0\">\n<architecture>arm</architecture>\n</target>\n");
1680 if (retval
!= ERROR_OK
)
1682 gdb_send_error(connection
, retval
);
1686 gdb_put_packet(connection
, xml
, strlen(xml
));
1692 gdb_put_packet(connection
, "", 0);
1696 int gdb_v_packet(connection_t
*connection
, target_t
*target
, char *packet
, int packet_size
)
1698 gdb_connection_t
*gdb_connection
= connection
->priv
;
1699 gdb_service_t
*gdb_service
= connection
->service
->priv
;
1702 /* if flash programming disabled - send a empty reply */
1704 if (gdb_flash_program
== 0)
1706 gdb_put_packet(connection
, "", 0);
1710 if (strstr(packet
, "vFlashErase:"))
1713 unsigned long length
;
1715 char *parse
= packet
+ 12;
1718 LOG_ERROR("incomplete vFlashErase packet received, dropping connection");
1719 return ERROR_SERVER_REMOTE_CLOSED
;
1722 addr
= strtoul(parse
, &parse
, 16);
1724 if (*(parse
++) != ',' || *parse
== '\0')
1726 LOG_ERROR("incomplete vFlashErase packet received, dropping connection");
1727 return ERROR_SERVER_REMOTE_CLOSED
;
1730 length
= strtoul(parse
, &parse
, 16);
1734 LOG_ERROR("incomplete vFlashErase packet received, dropping connection");
1735 return ERROR_SERVER_REMOTE_CLOSED
;
1738 /* assume all sectors need erasing - stops any problems
1739 * when flash_write is called multiple times */
1742 /* perform any target specific operations before the erase */
1743 target_call_event_callbacks(gdb_service
->target
, TARGET_EVENT_GDB_PROGRAM
);
1746 if ((result
= flash_erase_address_range(gdb_service
->target
, addr
, length
)) != ERROR_OK
)
1748 /* GDB doesn't evaluate the actual error number returned,
1749 * treat a failed erase as an I/O error
1751 gdb_send_error(connection
, EIO
);
1752 LOG_ERROR("flash_erase returned %i", result
);
1755 gdb_put_packet(connection
, "OK", 2);
1760 if (strstr(packet
, "vFlashWrite:"))
1763 unsigned long length
;
1764 char *parse
= packet
+ 12;
1768 LOG_ERROR("incomplete vFlashErase packet received, dropping connection");
1769 return ERROR_SERVER_REMOTE_CLOSED
;
1771 addr
= strtoul(parse
, &parse
, 16);
1772 if (*(parse
++) != ':')
1774 LOG_ERROR("incomplete vFlashErase packet received, dropping connection");
1775 return ERROR_SERVER_REMOTE_CLOSED
;
1777 length
= packet_size
- (parse
- packet
);
1779 /* create a new image if there isn't already one */
1780 if (gdb_connection
->vflash_image
== NULL
)
1782 gdb_connection
->vflash_image
= malloc(sizeof(image_t
));
1783 image_open(gdb_connection
->vflash_image
, "", "build");
1786 /* create new section with content from packet buffer */
1787 image_add_section(gdb_connection
->vflash_image
, addr
, length
, 0x0, (u8
*)parse
);
1789 gdb_put_packet(connection
, "OK", 2);
1794 if (!strcmp(packet
, "vFlashDone"))
1798 /* process the flashing buffer. No need to erase as GDB
1799 * always issues a vFlashErase first. */
1800 if ((result
= flash_write(gdb_service
->target
, gdb_connection
->vflash_image
, &written
, 0)) != ERROR_OK
)
1802 if (result
== ERROR_FLASH_DST_OUT_OF_BANK
)
1803 gdb_put_packet(connection
, "E.memtype", 9);
1805 gdb_send_error(connection
, EIO
);
1809 LOG_DEBUG("wrote %u bytes from vFlash image to flash", written
);
1810 gdb_put_packet(connection
, "OK", 2);
1813 image_close(gdb_connection
->vflash_image
);
1814 free(gdb_connection
->vflash_image
);
1815 gdb_connection
->vflash_image
= NULL
;
1820 gdb_put_packet(connection
, "", 0);
1824 int gdb_detach(connection_t
*connection
, target_t
*target
)
1826 switch( detach_mode
)
1828 case GDB_DETACH_RESUME
:
1829 target_invoke_script(connection
->cmd_ctx
, target
, "pre_resume");
1830 target_resume(target
, 1, 0, 1, 0);
1833 case GDB_DETACH_RESET
:
1834 /* FIX?? make this configurable?? */
1835 target_process_reset(connection
->cmd_ctx
, RESET_HALT
);
1838 case GDB_DETACH_HALT
:
1839 target_halt(target
);
1842 case GDB_DETACH_NOTHING
:
1846 gdb_put_packet(connection
, "OK", 2);
1851 static void gdb_log_callback(void *priv
, const char *file
, int line
,
1852 const char *function
, const char *string
)
1854 connection_t
*connection
= priv
;
1855 gdb_connection_t
*gdb_con
= connection
->priv
;
1859 /* do not reply this using the O packet */
1863 gdb_output_con(connection
, string
);
1866 /* Do not allocate this on the stack */
1867 char gdb_packet_buffer
[GDB_BUFFER_SIZE
];
1869 static void gdb_sig_halted(connection_t
*connection
)
1872 snprintf(sig_reply
, 4, "T%2.2x", 2);
1873 gdb_put_packet(connection
, sig_reply
, 3);
1877 int gdb_input_inner(connection_t
*connection
)
1879 gdb_service_t
*gdb_service
= connection
->service
->priv
;
1880 target_t
*target
= gdb_service
->target
;
1881 char *packet
=gdb_packet_buffer
;
1884 gdb_connection_t
*gdb_con
= connection
->priv
;
1885 static int extended_protocol
= 0;
1887 /* drain input buffer */
1890 packet_size
= GDB_BUFFER_SIZE
-1;
1891 if ((retval
= gdb_get_packet(connection
, packet
, &packet_size
)) != ERROR_OK
)
1896 /* terminate with zero */
1897 packet
[packet_size
] = 0;
1899 LOG_DEBUG("received packet: '%s'", packet
);
1901 if (packet_size
> 0)
1907 /* Hct... -- set thread
1908 * we don't have threads, send empty reply */
1909 gdb_put_packet(connection
, NULL
, 0);
1912 retval
= gdb_query_packet(connection
, target
, packet
, packet_size
);
1915 retval
= gdb_get_registers_packet(connection
, target
, packet
, packet_size
);
1918 retval
= gdb_set_registers_packet(connection
, target
, packet
, packet_size
);
1921 retval
= gdb_get_register_packet(connection
, target
, packet
, packet_size
);
1924 retval
= gdb_set_register_packet(connection
, target
, packet
, packet_size
);
1927 retval
= gdb_read_memory_packet(connection
, target
, packet
, packet_size
);
1930 retval
= gdb_write_memory_packet(connection
, target
, packet
, packet_size
);
1934 retval
= gdb_breakpoint_watchpoint_packet(connection
, target
, packet
, packet_size
);
1937 gdb_last_signal_packet(connection
, target
, packet
, packet_size
);
1942 if (target
->state
!= TARGET_HALTED
)
1944 /* If the target isn't in the halted state, then we can't
1945 * step/continue. This might be early setup, etc.
1947 gdb_sig_halted(connection
);
1950 /* We're running/stepping, in which case we can
1951 * forward log output until the target is halted
1953 gdb_connection_t
*gdb_con
= connection
->priv
;
1954 gdb_con
->frontend_state
= TARGET_RUNNING
;
1955 log_add_callback(gdb_log_callback
, connection
);
1956 int retval
=gdb_step_continue_packet(connection
, target
, packet
, packet_size
);
1957 if (retval
!=ERROR_OK
)
1959 /* we'll never receive a halted condition... issue a false one.. */
1960 gdb_frontend_halted(target
, connection
);
1966 retval
= gdb_v_packet(connection
, target
, packet
, packet_size
);
1969 retval
= gdb_detach(connection
, target
);
1970 extended_protocol
= 0;
1973 if ((retval
= gdb_write_memory_binary_packet(connection
, target
, packet
, packet_size
)) != ERROR_OK
)
1977 if (extended_protocol
!= 0)
1979 gdb_put_packet(connection
, "OK", 2);
1980 return ERROR_SERVER_REMOTE_CLOSED
;
1982 /* handle extended remote protocol */
1983 extended_protocol
= 1;
1984 gdb_put_packet(connection
, "OK", 2);
1987 /* handle extended restart packet */
1988 command_run_linef(connection
->cmd_ctx
, "ocd_gdb_restart %d", get_num_by_target(target
));
1991 /* ignore unkown packets */
1992 LOG_DEBUG("ignoring 0x%2.2x packet", packet
[0]);
1993 gdb_put_packet(connection
, NULL
, 0);
1997 /* if a packet handler returned an error, exit input loop */
1998 if (retval
!= ERROR_OK
)
2002 if (gdb_con
->ctrl_c
)
2004 if (target
->state
== TARGET_RUNNING
)
2006 target_halt(target
);
2007 gdb_con
->ctrl_c
= 0;
2011 } while (gdb_con
->buf_cnt
> 0);
2016 int gdb_input(connection_t
*connection
)
2018 int retval
= gdb_input_inner(connection
);
2019 gdb_connection_t
*gdb_con
= connection
->priv
;
2020 if (retval
== ERROR_SERVER_REMOTE_CLOSED
)
2023 /* logging does not propagate the error, yet can set th gdb_con->closed flag */
2024 if (gdb_con
->closed
)
2025 return ERROR_SERVER_REMOTE_CLOSED
;
2027 /* we'll recover from any other errors(e.g. temporary timeouts, etc.) */
2033 gdb_service_t
*gdb_service
;
2034 target_t
*target
= targets
;
2039 LOG_WARNING("no gdb ports allocated as no target has been specified");
2045 LOG_WARNING("no gdb port specified, using default port 3333");
2051 char service_name
[8];
2053 snprintf(service_name
, 8, "gdb-%2.2i", i
);
2055 gdb_service
= malloc(sizeof(gdb_service_t
));
2056 gdb_service
->target
= target
;
2058 add_service("gdb", CONNECTION_GDB
, gdb_port
+ i
, 1, gdb_new_connection
, gdb_input
, gdb_connection_closed
, gdb_service
);
2060 LOG_DEBUG("gdb service for target %s at port %i", target
->type
->name
, gdb_port
+ i
);
2063 target
= target
->next
;
2069 /* daemon configuration command gdb_port */
2070 int handle_gdb_port_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
2075 /* only if the port wasn't overwritten by cmdline */
2077 gdb_port
= strtoul(args
[0], NULL
, 0);
2082 int handle_gdb_detach_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
2086 if (strcmp(args
[0], "resume") == 0)
2088 detach_mode
= GDB_DETACH_RESUME
;
2091 else if (strcmp(args
[0], "reset") == 0)
2093 detach_mode
= GDB_DETACH_RESET
;
2096 else if (strcmp(args
[0], "halt") == 0)
2098 detach_mode
= GDB_DETACH_HALT
;
2101 else if (strcmp(args
[0], "nothing") == 0)
2103 detach_mode
= GDB_DETACH_NOTHING
;
2108 LOG_WARNING("invalid gdb_detach configuration directive: %s", args
[0]);
2112 int handle_gdb_memory_map_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
2116 if (strcmp(args
[0], "enable") == 0)
2118 gdb_use_memory_map
= 1;
2121 else if (strcmp(args
[0], "disable") == 0)
2123 gdb_use_memory_map
= 0;
2128 LOG_WARNING("invalid gdb_memory_map configuration directive: %s", args
[0]);
2132 int handle_gdb_flash_program_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
2136 if (strcmp(args
[0], "enable") == 0)
2138 gdb_flash_program
= 1;
2141 else if (strcmp(args
[0], "disable") == 0)
2143 gdb_flash_program
= 0;
2148 LOG_WARNING("invalid gdb_memory_map configuration directive: %s", args
[0]);
2152 int handle_gdb_report_data_abort_command(struct command_context_s
*cmd_ctx
, char *cmd
, char **args
, int argc
)
2156 if (strcmp(args
[0], "enable") == 0)
2158 gdb_report_data_abort
= 1;
2161 else if (strcmp(args
[0], "disable") == 0)
2163 gdb_report_data_abort
= 0;
2168 LOG_WARNING("invalid gdb_report_data_abort configuration directive: %s", args
[0]);
2172 int gdb_register_commands(command_context_t
*command_context
)
2174 register_command(command_context
, NULL
, "gdb_port", handle_gdb_port_command
,
2175 COMMAND_CONFIG
, "");
2176 register_command(command_context
, NULL
, "gdb_detach", handle_gdb_detach_command
,
2177 COMMAND_CONFIG
, "");
2178 register_command(command_context
, NULL
, "gdb_memory_map", handle_gdb_memory_map_command
,
2179 COMMAND_CONFIG
, "");
2180 register_command(command_context
, NULL
, "gdb_flash_program", handle_gdb_flash_program_command
,
2181 COMMAND_CONFIG
, "");
2182 register_command(command_context
, NULL
, "gdb_report_data_abort", handle_gdb_report_data_abort_command
,
2183 COMMAND_CONFIG
, "");
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