1 /***************************************************************************
2 * Copyright (C) 2005 by Dominic Rath *
3 * Dominic.Rath@gmx.de *
5 * Copyright (C) 2007-2010 Øyvind Harboe *
6 * oyvind.harboe@zylin.com *
8 * Copyright (C) 2008 by Spencer Oliver *
9 * spen@spen-soft.co.uk *
11 * Copyright (C) 2011 by Broadcom Corporation *
12 * Evan Hunter - ehunter@broadcom.com *
14 * Copyright (C) ST-Ericsson SA 2011 *
15 * michel.jaouen@stericsson.com : smp minimum support *
17 * Copyright (C) 2013 Andes Technology *
18 * Hsiangkai Wang <hkwang@andestech.com> *
20 * Copyright (C) 2013 Franck Jullien *
21 * elec4fun@gmail.com *
23 * This program is free software; you can redistribute it and/or modify *
24 * it under the terms of the GNU General Public License as published by *
25 * the Free Software Foundation; either version 2 of the License, or *
26 * (at your option) any later version. *
28 * This program is distributed in the hope that it will be useful, *
29 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
30 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
31 * GNU General Public License for more details. *
33 * You should have received a copy of the GNU General Public License *
34 * along with this program. If not, see <http://www.gnu.org/licenses/>. *
35 ***************************************************************************/
41 #include <target/breakpoints.h>
42 #include <target/target_request.h>
43 #include <target/register.h>
44 #include <target/target.h>
45 #include <target/target_type.h>
47 #include <flash/nor/core.h>
48 #include "gdb_server.h"
49 #include <target/image.h>
50 #include <jtag/jtag.h>
51 #include "rtos/rtos.h"
52 #include "target/smp.h"
56 * GDB server implementation.
58 * This implements the GDB Remote Serial Protocol, over TCP connections,
59 * giving GDB access to the JTAG or other hardware debugging facilities
60 * found in most modern embedded processors.
63 struct target_desc_format
{
65 uint32_t tdesc_length
;
68 /* private connection data for GDB */
69 struct gdb_connection
{
70 char buffer
[GDB_BUFFER_SIZE
];
74 enum target_state frontend_state
;
75 struct image
*vflash_image
;
79 /* set flag to true if you want the next stepi to return immediately.
80 * allowing GDB to pick up a fresh set of register values from the target
81 * without modifying the target state. */
83 /* We delay reporting memory write errors until next step/continue or memory
84 * write. This improves performance of gdb load significantly as the GDB packet
85 * can be replied immediately and a new GDB packet will be ready without delay
86 * (ca. 10% or so...). */
88 /* with extended-remote it seems we need to better emulate attach/detach.
89 * what this means is we reply with a W stop reply after a kill packet,
90 * normally we reply with a S reply via gdb_last_signal_packet.
91 * as a side note this behaviour only effects gdb > 6.8 */
93 /* temporarily used for target description support */
94 struct target_desc_format target_desc
;
95 /* temporarily used for thread list support */
100 #define _DEBUG_GDB_IO_
103 static struct gdb_connection
*current_gdb_connection
;
105 static int gdb_breakpoint_override
;
106 static enum breakpoint_type gdb_breakpoint_override_type
;
108 static int gdb_error(struct connection
*connection
, int retval
);
109 static char *gdb_port
;
110 static char *gdb_port_next
;
112 static void gdb_log_callback(void *priv
, const char *file
, unsigned line
,
113 const char *function
, const char *string
);
115 static void gdb_sig_halted(struct connection
*connection
);
117 /* number of gdb connections, mainly to suppress gdb related debugging spam
118 * in helper/log.c when no gdb connections are actually active */
119 int gdb_actual_connections
;
121 /* set if we are sending a memory map to gdb
122 * via qXfer:memory-map:read packet */
123 /* enabled by default*/
124 static int gdb_use_memory_map
= 1;
125 /* enabled by default*/
126 static int gdb_flash_program
= 1;
128 /* if set, data aborts cause an error to be reported in memory read packets
129 * see the code in gdb_read_memory_packet() for further explanations.
130 * Disabled by default.
132 static int gdb_report_data_abort
;
134 /* set if we are sending target descriptions to gdb
135 * via qXfer:features:read packet */
136 /* enabled by default */
137 static int gdb_use_target_description
= 1;
139 /* current processing free-run type, used by file-I/O */
140 static char gdb_running_type
;
142 static int gdb_last_signal(struct target
*target
)
144 switch (target
->debug_reason
) {
145 case DBG_REASON_DBGRQ
:
146 return 0x2; /* SIGINT */
147 case DBG_REASON_BREAKPOINT
:
148 case DBG_REASON_WATCHPOINT
:
149 case DBG_REASON_WPTANDBKPT
:
150 return 0x05; /* SIGTRAP */
151 case DBG_REASON_SINGLESTEP
:
152 return 0x05; /* SIGTRAP */
153 case DBG_REASON_NOTHALTED
:
154 return 0x0; /* no signal... shouldn't happen */
156 LOG_USER("undefined debug reason %d - target needs reset",
157 target
->debug_reason
);
162 static int check_pending(struct connection
*connection
,
163 int timeout_s
, int *got_data
)
165 /* a non-blocking socket will block if there is 0 bytes available on the socket,
166 * but return with as many bytes as are available immediately
170 struct gdb_connection
*gdb_con
= connection
->priv
;
172 if (got_data
== NULL
)
176 if (gdb_con
->buf_cnt
> 0) {
182 FD_SET(connection
->fd
, &read_fds
);
184 tv
.tv_sec
= timeout_s
;
186 if (socket_select(connection
->fd
+ 1, &read_fds
, NULL
, NULL
, &tv
) == 0) {
187 /* This can typically be because a "monitor" command took too long
188 * before printing any progress messages
191 return ERROR_GDB_TIMEOUT
;
195 *got_data
= FD_ISSET(connection
->fd
, &read_fds
) != 0;
199 static int gdb_get_char_inner(struct connection
*connection
, int *next_char
)
201 struct gdb_connection
*gdb_con
= connection
->priv
;
202 int retval
= ERROR_OK
;
204 #ifdef _DEBUG_GDB_IO_
208 if (connection
->service
->type
!= CONNECTION_TCP
)
209 gdb_con
->buf_cnt
= read(connection
->fd
, gdb_con
->buffer
, GDB_BUFFER_SIZE
);
211 retval
= check_pending(connection
, 1, NULL
);
212 if (retval
!= ERROR_OK
)
214 gdb_con
->buf_cnt
= read_socket(connection
->fd
,
219 if (gdb_con
->buf_cnt
> 0)
221 if (gdb_con
->buf_cnt
== 0) {
222 gdb_con
->closed
= true;
223 return ERROR_SERVER_REMOTE_CLOSED
;
227 errno
= WSAGetLastError();
233 case WSAECONNABORTED
:
234 gdb_con
->closed
= true;
235 return ERROR_SERVER_REMOTE_CLOSED
;
237 gdb_con
->closed
= true;
238 return ERROR_SERVER_REMOTE_CLOSED
;
240 LOG_ERROR("read: %d", errno
);
249 gdb_con
->closed
= true;
250 return ERROR_SERVER_REMOTE_CLOSED
;
252 gdb_con
->closed
= true;
253 return ERROR_SERVER_REMOTE_CLOSED
;
255 LOG_ERROR("read: %s", strerror(errno
));
256 gdb_con
->closed
= true;
257 return ERROR_SERVER_REMOTE_CLOSED
;
262 #ifdef _DEBUG_GDB_IO_
263 debug_buffer
= strndup(gdb_con
->buffer
, gdb_con
->buf_cnt
);
264 LOG_DEBUG("received '%s'", debug_buffer
);
268 gdb_con
->buf_p
= gdb_con
->buffer
;
270 *next_char
= *(gdb_con
->buf_p
++);
271 if (gdb_con
->buf_cnt
> 0)
272 connection
->input_pending
= 1;
274 connection
->input_pending
= 0;
275 #ifdef _DEBUG_GDB_IO_
276 LOG_DEBUG("returned char '%c' (0x%2.2x)", *next_char
, *next_char
);
283 * The cool thing about this fn is that it allows buf_p and buf_cnt to be
284 * held in registers in the inner loop.
286 * For small caches and embedded systems this is important!
288 static inline int gdb_get_char_fast(struct connection
*connection
,
289 int *next_char
, char **buf_p
, int *buf_cnt
)
291 int retval
= ERROR_OK
;
293 if ((*buf_cnt
)-- > 0) {
294 *next_char
= **buf_p
;
297 connection
->input_pending
= 1;
299 connection
->input_pending
= 0;
301 #ifdef _DEBUG_GDB_IO_
302 LOG_DEBUG("returned char '%c' (0x%2.2x)", *next_char
, *next_char
);
308 struct gdb_connection
*gdb_con
= connection
->priv
;
309 gdb_con
->buf_p
= *buf_p
;
310 gdb_con
->buf_cnt
= *buf_cnt
;
311 retval
= gdb_get_char_inner(connection
, next_char
);
312 *buf_p
= gdb_con
->buf_p
;
313 *buf_cnt
= gdb_con
->buf_cnt
;
318 static int gdb_get_char(struct connection
*connection
, int *next_char
)
320 struct gdb_connection
*gdb_con
= connection
->priv
;
321 return gdb_get_char_fast(connection
, next_char
, &gdb_con
->buf_p
, &gdb_con
->buf_cnt
);
324 static int gdb_putback_char(struct connection
*connection
, int last_char
)
326 struct gdb_connection
*gdb_con
= connection
->priv
;
328 if (gdb_con
->buf_p
> gdb_con
->buffer
) {
329 *(--gdb_con
->buf_p
) = last_char
;
332 LOG_ERROR("BUG: couldn't put character back");
337 /* The only way we can detect that the socket is closed is the first time
338 * we write to it, we will fail. Subsequent write operations will
339 * succeed. Shudder! */
340 static int gdb_write(struct connection
*connection
, void *data
, int len
)
342 struct gdb_connection
*gdb_con
= connection
->priv
;
344 return ERROR_SERVER_REMOTE_CLOSED
;
346 if (connection_write(connection
, data
, len
) == len
)
348 gdb_con
->closed
= true;
349 return ERROR_SERVER_REMOTE_CLOSED
;
352 static int gdb_put_packet_inner(struct connection
*connection
,
353 char *buffer
, int len
)
356 unsigned char my_checksum
= 0;
357 #ifdef _DEBUG_GDB_IO_
362 struct gdb_connection
*gdb_con
= connection
->priv
;
364 for (i
= 0; i
< len
; i
++)
365 my_checksum
+= buffer
[i
];
367 #ifdef _DEBUG_GDB_IO_
369 * At this point we should have nothing in the input queue from GDB,
370 * however sometimes '-' is sent even though we've already received
371 * an ACK (+) for everything we've sent off.
375 retval
= check_pending(connection
, 0, &gotdata
);
376 if (retval
!= ERROR_OK
)
380 retval
= gdb_get_char(connection
, &reply
);
381 if (retval
!= ERROR_OK
)
384 /* fix a problem with some IAR tools */
385 gdb_putback_char(connection
, reply
);
386 LOG_DEBUG("Unexpected start of new packet");
390 LOG_WARNING("Discard unexpected char %c", reply
);
395 #ifdef _DEBUG_GDB_IO_
396 debug_buffer
= strndup(buffer
, len
);
397 LOG_DEBUG("sending packet '$%s#%2.2x'", debug_buffer
, my_checksum
);
401 char local_buffer
[1024];
402 local_buffer
[0] = '$';
403 if ((size_t)len
+ 4 <= sizeof(local_buffer
)) {
404 /* performance gain on smaller packets by only a single call to gdb_write() */
405 memcpy(local_buffer
+ 1, buffer
, len
++);
406 len
+= snprintf(local_buffer
+ len
, sizeof(local_buffer
) - len
, "#%02x", my_checksum
);
407 retval
= gdb_write(connection
, local_buffer
, len
);
408 if (retval
!= ERROR_OK
)
411 /* larger packets are transmitted directly from caller supplied buffer
412 * by several calls to gdb_write() to avoid dynamic allocation */
413 snprintf(local_buffer
+ 1, sizeof(local_buffer
) - 1, "#%02x", my_checksum
);
414 retval
= gdb_write(connection
, local_buffer
, 1);
415 if (retval
!= ERROR_OK
)
417 retval
= gdb_write(connection
, buffer
, len
);
418 if (retval
!= ERROR_OK
)
420 retval
= gdb_write(connection
, local_buffer
+ 1, 3);
421 if (retval
!= ERROR_OK
)
425 if (gdb_con
->noack_mode
)
428 retval
= gdb_get_char(connection
, &reply
);
429 if (retval
!= ERROR_OK
)
434 else if (reply
== '-') {
435 /* Stop sending output packets for now */
436 log_remove_callback(gdb_log_callback
, connection
);
437 LOG_WARNING("negative reply, retrying");
438 } else if (reply
== 0x3) {
440 retval
= gdb_get_char(connection
, &reply
);
441 if (retval
!= ERROR_OK
)
445 else if (reply
== '-') {
446 /* Stop sending output packets for now */
447 log_remove_callback(gdb_log_callback
, connection
);
448 LOG_WARNING("negative reply, retrying");
449 } else if (reply
== '$') {
450 LOG_ERROR("GDB missing ack(1) - assumed good");
451 gdb_putback_char(connection
, reply
);
454 LOG_ERROR("unknown character(1) 0x%2.2x in reply, dropping connection", reply
);
455 gdb_con
->closed
= true;
456 return ERROR_SERVER_REMOTE_CLOSED
;
458 } else if (reply
== '$') {
459 LOG_ERROR("GDB missing ack(2) - assumed good");
460 gdb_putback_char(connection
, reply
);
463 LOG_ERROR("unknown character(2) 0x%2.2x in reply, dropping connection",
465 gdb_con
->closed
= true;
466 return ERROR_SERVER_REMOTE_CLOSED
;
470 return ERROR_SERVER_REMOTE_CLOSED
;
475 int gdb_put_packet(struct connection
*connection
, char *buffer
, int len
)
477 struct gdb_connection
*gdb_con
= connection
->priv
;
478 gdb_con
->busy
= true;
479 int retval
= gdb_put_packet_inner(connection
, buffer
, len
);
480 gdb_con
->busy
= false;
482 /* we sent some data, reset timer for keep alive messages */
488 static inline int fetch_packet(struct connection
*connection
,
489 int *checksum_ok
, int noack
, int *len
, char *buffer
)
491 unsigned char my_checksum
= 0;
494 int retval
= ERROR_OK
;
496 struct gdb_connection
*gdb_con
= connection
->priv
;
501 /* move this over into local variables to use registers and give the
502 * more freedom to optimize */
503 char *buf_p
= gdb_con
->buf_p
;
504 int buf_cnt
= gdb_con
->buf_cnt
;
507 /* The common case is that we have an entire packet with no escape chars.
508 * We need to leave at least 2 bytes in the buffer to have
509 * gdb_get_char() update various bits and bobs correctly.
511 if ((buf_cnt
> 2) && ((buf_cnt
+ count
) < *len
)) {
512 /* The compiler will struggle a bit with constant propagation and
513 * aliasing, so we help it by showing that these values do not
514 * change inside the loop
518 int run
= buf_cnt
- 2;
524 if (character
== '#') {
525 /* Danger! character can be '#' when esc is
526 * used so we need an explicit boolean for done here. */
531 if (character
== '}') {
532 /* data transmitted in binary mode (X packet)
533 * uses 0x7d as escape character */
534 my_checksum
+= character
& 0xff;
537 my_checksum
+= character
& 0xff;
538 buffer
[count
++] = (character
^ 0x20) & 0xff;
540 my_checksum
+= character
& 0xff;
541 buffer
[count
++] = character
& 0xff;
550 LOG_ERROR("packet buffer too small");
551 retval
= ERROR_GDB_BUFFER_TOO_SMALL
;
555 retval
= gdb_get_char_fast(connection
, &character
, &buf_p
, &buf_cnt
);
556 if (retval
!= ERROR_OK
)
559 if (character
== '#')
562 if (character
== '}') {
563 /* data transmitted in binary mode (X packet)
564 * uses 0x7d as escape character */
565 my_checksum
+= character
& 0xff;
567 retval
= gdb_get_char_fast(connection
, &character
, &buf_p
, &buf_cnt
);
568 if (retval
!= ERROR_OK
)
571 my_checksum
+= character
& 0xff;
572 buffer
[count
++] = (character
^ 0x20) & 0xff;
574 my_checksum
+= character
& 0xff;
575 buffer
[count
++] = character
& 0xff;
579 gdb_con
->buf_p
= buf_p
;
580 gdb_con
->buf_cnt
= buf_cnt
;
582 if (retval
!= ERROR_OK
)
587 retval
= gdb_get_char(connection
, &character
);
588 if (retval
!= ERROR_OK
)
590 checksum
[0] = character
;
591 retval
= gdb_get_char(connection
, &character
);
592 if (retval
!= ERROR_OK
)
594 checksum
[1] = character
;
598 *checksum_ok
= (my_checksum
== strtoul(checksum
, NULL
, 16));
603 static int gdb_get_packet_inner(struct connection
*connection
,
604 char *buffer
, int *len
)
608 struct gdb_connection
*gdb_con
= connection
->priv
;
612 retval
= gdb_get_char(connection
, &character
);
613 if (retval
!= ERROR_OK
)
616 #ifdef _DEBUG_GDB_IO_
617 LOG_DEBUG("character: '%c'", character
);
624 /* According to the GDB documentation
625 * (https://sourceware.org/gdb/onlinedocs/gdb/Packet-Acknowledgment.html):
626 * "gdb sends a final `+` acknowledgment of the stub's `OK`
627 * response, which can be safely ignored by the stub."
628 * However OpenOCD server already is in noack mode at this
629 * point and instead of ignoring this it was emitting a
630 * warning. This code makes server ignore the first ACK
631 * that will be received after going into noack mode,
632 * warning only about subsequent ACK's. */
633 if (gdb_con
->noack_mode
> 1) {
634 LOG_WARNING("acknowledgment received, but no packet pending");
635 } else if (gdb_con
->noack_mode
) {
636 LOG_DEBUG("Received first acknowledgment after entering noack mode. Ignoring it.");
637 gdb_con
->noack_mode
= 2;
641 LOG_WARNING("negative acknowledgment, but no packet pending");
648 LOG_WARNING("ignoring character 0x%x", character
);
651 } while (character
!= '$');
654 /* explicit code expansion here to get faster inlined code in -O3 by not
655 * calculating checksum */
656 if (gdb_con
->noack_mode
) {
657 retval
= fetch_packet(connection
, &checksum_ok
, 1, len
, buffer
);
658 if (retval
!= ERROR_OK
)
661 retval
= fetch_packet(connection
, &checksum_ok
, 0, len
, buffer
);
662 if (retval
!= ERROR_OK
)
666 if (gdb_con
->noack_mode
) {
667 /* checksum is not checked in noack mode */
671 retval
= gdb_write(connection
, "+", 1);
672 if (retval
!= ERROR_OK
)
678 return ERROR_SERVER_REMOTE_CLOSED
;
683 static int gdb_get_packet(struct connection
*connection
, char *buffer
, int *len
)
685 struct gdb_connection
*gdb_con
= connection
->priv
;
686 gdb_con
->busy
= true;
687 int retval
= gdb_get_packet_inner(connection
, buffer
, len
);
688 gdb_con
->busy
= false;
692 static int gdb_output_con(struct connection
*connection
, const char *line
)
697 bin_size
= strlen(line
);
699 hex_buffer
= malloc(bin_size
* 2 + 2);
700 if (hex_buffer
== NULL
)
701 return ERROR_GDB_BUFFER_TOO_SMALL
;
704 size_t pkt_len
= hexify(hex_buffer
+ 1, (const uint8_t *)line
, bin_size
,
706 int retval
= gdb_put_packet(connection
, hex_buffer
, pkt_len
+ 1);
712 static int gdb_output(struct command_context
*context
, const char *line
)
714 /* this will be dumped to the log and also sent as an O packet if possible */
715 LOG_USER_N("%s", line
);
719 static void gdb_signal_reply(struct target
*target
, struct connection
*connection
)
721 struct gdb_connection
*gdb_connection
= connection
->priv
;
723 char stop_reason
[20];
724 char current_thread
[25];
728 rtos_update_threads(target
);
730 if (target
->debug_reason
== DBG_REASON_EXIT
) {
731 sig_reply_len
= snprintf(sig_reply
, sizeof(sig_reply
), "W00");
733 if (gdb_connection
->ctrl_c
) {
735 gdb_connection
->ctrl_c
= 0;
737 signal_var
= gdb_last_signal(target
);
739 stop_reason
[0] = '\0';
740 if (target
->debug_reason
== DBG_REASON_WATCHPOINT
) {
741 enum watchpoint_rw hit_wp_type
;
742 target_addr_t hit_wp_address
;
744 if (watchpoint_hit(target
, &hit_wp_type
, &hit_wp_address
) == ERROR_OK
) {
746 switch (hit_wp_type
) {
748 snprintf(stop_reason
, sizeof(stop_reason
),
749 "watch:%08" TARGET_PRIxADDR
";", hit_wp_address
);
752 snprintf(stop_reason
, sizeof(stop_reason
),
753 "rwatch:%08" TARGET_PRIxADDR
";", hit_wp_address
);
756 snprintf(stop_reason
, sizeof(stop_reason
),
757 "awatch:%08" TARGET_PRIxADDR
";", hit_wp_address
);
765 current_thread
[0] = '\0';
766 if (target
->rtos
!= NULL
) {
767 snprintf(current_thread
, sizeof(current_thread
), "thread:%016" PRIx64
";", target
->rtos
->current_thread
);
768 target
->rtos
->current_threadid
= target
->rtos
->current_thread
;
771 sig_reply_len
= snprintf(sig_reply
, sizeof(sig_reply
), "T%2.2x%s%s",
772 signal_var
, stop_reason
, current_thread
);
775 gdb_put_packet(connection
, sig_reply
, sig_reply_len
);
776 gdb_connection
->frontend_state
= TARGET_HALTED
;
779 static void gdb_fileio_reply(struct target
*target
, struct connection
*connection
)
781 struct gdb_connection
*gdb_connection
= connection
->priv
;
782 char fileio_command
[256];
784 bool program_exited
= false;
786 if (strcmp(target
->fileio_info
->identifier
, "open") == 0)
787 sprintf(fileio_command
, "F%s,%" PRIx32
"/%" PRIx32
",%" PRIx32
",%" PRIx32
, target
->fileio_info
->identifier
,
788 target
->fileio_info
->param_1
,
789 target
->fileio_info
->param_2
,
790 target
->fileio_info
->param_3
,
791 target
->fileio_info
->param_4
);
792 else if (strcmp(target
->fileio_info
->identifier
, "close") == 0)
793 sprintf(fileio_command
, "F%s,%" PRIx32
, target
->fileio_info
->identifier
,
794 target
->fileio_info
->param_1
);
795 else if (strcmp(target
->fileio_info
->identifier
, "read") == 0)
796 sprintf(fileio_command
, "F%s,%" PRIx32
",%" PRIx32
",%" PRIx32
, target
->fileio_info
->identifier
,
797 target
->fileio_info
->param_1
,
798 target
->fileio_info
->param_2
,
799 target
->fileio_info
->param_3
);
800 else if (strcmp(target
->fileio_info
->identifier
, "write") == 0)
801 sprintf(fileio_command
, "F%s,%" PRIx32
",%" PRIx32
",%" PRIx32
, target
->fileio_info
->identifier
,
802 target
->fileio_info
->param_1
,
803 target
->fileio_info
->param_2
,
804 target
->fileio_info
->param_3
);
805 else if (strcmp(target
->fileio_info
->identifier
, "lseek") == 0)
806 sprintf(fileio_command
, "F%s,%" PRIx32
",%" PRIx32
",%" PRIx32
, target
->fileio_info
->identifier
,
807 target
->fileio_info
->param_1
,
808 target
->fileio_info
->param_2
,
809 target
->fileio_info
->param_3
);
810 else if (strcmp(target
->fileio_info
->identifier
, "rename") == 0)
811 sprintf(fileio_command
, "F%s,%" PRIx32
"/%" PRIx32
",%" PRIx32
"/%" PRIx32
, target
->fileio_info
->identifier
,
812 target
->fileio_info
->param_1
,
813 target
->fileio_info
->param_2
,
814 target
->fileio_info
->param_3
,
815 target
->fileio_info
->param_4
);
816 else if (strcmp(target
->fileio_info
->identifier
, "unlink") == 0)
817 sprintf(fileio_command
, "F%s,%" PRIx32
"/%" PRIx32
, target
->fileio_info
->identifier
,
818 target
->fileio_info
->param_1
,
819 target
->fileio_info
->param_2
);
820 else if (strcmp(target
->fileio_info
->identifier
, "stat") == 0)
821 sprintf(fileio_command
, "F%s,%" PRIx32
"/%" PRIx32
",%" PRIx32
, target
->fileio_info
->identifier
,
822 target
->fileio_info
->param_1
,
823 target
->fileio_info
->param_2
,
824 target
->fileio_info
->param_3
);
825 else if (strcmp(target
->fileio_info
->identifier
, "fstat") == 0)
826 sprintf(fileio_command
, "F%s,%" PRIx32
",%" PRIx32
, target
->fileio_info
->identifier
,
827 target
->fileio_info
->param_1
,
828 target
->fileio_info
->param_2
);
829 else if (strcmp(target
->fileio_info
->identifier
, "gettimeofday") == 0)
830 sprintf(fileio_command
, "F%s,%" PRIx32
",%" PRIx32
, target
->fileio_info
->identifier
,
831 target
->fileio_info
->param_1
,
832 target
->fileio_info
->param_2
);
833 else if (strcmp(target
->fileio_info
->identifier
, "isatty") == 0)
834 sprintf(fileio_command
, "F%s,%" PRIx32
, target
->fileio_info
->identifier
,
835 target
->fileio_info
->param_1
);
836 else if (strcmp(target
->fileio_info
->identifier
, "system") == 0)
837 sprintf(fileio_command
, "F%s,%" PRIx32
"/%" PRIx32
, target
->fileio_info
->identifier
,
838 target
->fileio_info
->param_1
,
839 target
->fileio_info
->param_2
);
840 else if (strcmp(target
->fileio_info
->identifier
, "exit") == 0) {
841 /* If target hits exit syscall, report to GDB the program is terminated.
842 * In addition, let target run its own exit syscall handler. */
843 program_exited
= true;
844 sprintf(fileio_command
, "W%02" PRIx32
, target
->fileio_info
->param_1
);
846 LOG_DEBUG("Unknown syscall: %s", target
->fileio_info
->identifier
);
848 /* encounter unknown syscall, continue */
849 gdb_connection
->frontend_state
= TARGET_RUNNING
;
850 target_resume(target
, 1, 0x0, 0, 0);
854 command_len
= strlen(fileio_command
);
855 gdb_put_packet(connection
, fileio_command
, command_len
);
857 if (program_exited
) {
858 /* Use target_resume() to let target run its own exit syscall handler. */
859 gdb_connection
->frontend_state
= TARGET_RUNNING
;
860 target_resume(target
, 1, 0x0, 0, 0);
862 gdb_connection
->frontend_state
= TARGET_HALTED
;
863 rtos_update_threads(target
);
867 static void gdb_frontend_halted(struct target
*target
, struct connection
*connection
)
869 struct gdb_connection
*gdb_connection
= connection
->priv
;
871 /* In the GDB protocol when we are stepping or continuing execution,
872 * we have a lingering reply. Upon receiving a halted event
873 * when we have that lingering packet, we reply to the original
874 * step or continue packet.
876 * Executing monitor commands can bring the target in and
877 * out of the running state so we'll see lots of TARGET_EVENT_XXX
878 * that are to be ignored.
880 if (gdb_connection
->frontend_state
== TARGET_RUNNING
) {
881 /* stop forwarding log packets! */
882 log_remove_callback(gdb_log_callback
, connection
);
884 /* check fileio first */
885 if (target_get_gdb_fileio_info(target
, target
->fileio_info
) == ERROR_OK
)
886 gdb_fileio_reply(target
, connection
);
888 gdb_signal_reply(target
, connection
);
892 static int gdb_target_callback_event_handler(struct target
*target
,
893 enum target_event event
, void *priv
)
896 struct connection
*connection
= priv
;
897 struct gdb_service
*gdb_service
= connection
->service
->priv
;
899 if (gdb_service
->target
!= target
)
903 case TARGET_EVENT_GDB_HALT
:
904 gdb_frontend_halted(target
, connection
);
906 case TARGET_EVENT_HALTED
:
907 target_call_event_callbacks(target
, TARGET_EVENT_GDB_END
);
909 case TARGET_EVENT_GDB_FLASH_ERASE_START
:
910 retval
= jtag_execute_queue();
911 if (retval
!= ERROR_OK
)
921 static int gdb_new_connection(struct connection
*connection
)
923 struct gdb_connection
*gdb_connection
= malloc(sizeof(struct gdb_connection
));
924 struct target
*target
;
928 target
= get_target_from_connection(connection
);
929 connection
->priv
= gdb_connection
;
931 /* initialize gdb connection information */
932 gdb_connection
->buf_p
= gdb_connection
->buffer
;
933 gdb_connection
->buf_cnt
= 0;
934 gdb_connection
->ctrl_c
= 0;
935 gdb_connection
->frontend_state
= TARGET_HALTED
;
936 gdb_connection
->vflash_image
= NULL
;
937 gdb_connection
->closed
= false;
938 gdb_connection
->busy
= false;
939 gdb_connection
->noack_mode
= 0;
940 gdb_connection
->sync
= false;
941 gdb_connection
->mem_write_error
= false;
942 gdb_connection
->attached
= true;
943 gdb_connection
->target_desc
.tdesc
= NULL
;
944 gdb_connection
->target_desc
.tdesc_length
= 0;
945 gdb_connection
->thread_list
= NULL
;
947 /* send ACK to GDB for debug request */
948 gdb_write(connection
, "+", 1);
950 /* output goes through gdb connection */
951 command_set_output_handler(connection
->cmd_ctx
, gdb_output
, connection
);
953 /* we must remove all breakpoints registered to the target as a previous
954 * GDB session could leave dangling breakpoints if e.g. communication
957 breakpoint_clear_target(target
);
958 watchpoint_clear_target(target
);
960 /* clean previous rtos session if supported*/
961 if ((target
->rtos
) && (target
->rtos
->type
->clean
))
962 target
->rtos
->type
->clean(target
);
964 /* remove the initial ACK from the incoming buffer */
965 retval
= gdb_get_char(connection
, &initial_ack
);
966 if (retval
!= ERROR_OK
)
969 /* FIX!!!??? would we actually ever receive a + here???
972 if (initial_ack
!= '+')
973 gdb_putback_char(connection
, initial_ack
);
974 target_call_event_callbacks(target
, TARGET_EVENT_GDB_ATTACH
);
976 if (gdb_use_memory_map
) {
977 /* Connect must fail if the memory map can't be set up correctly.
979 * This will cause an auto_probe to be invoked, which is either
980 * a no-op or it will fail when the target isn't ready(e.g. not halted).
983 for (i
= 0; i
< flash_get_bank_count(); i
++) {
984 struct flash_bank
*p
;
985 p
= get_flash_bank_by_num_noprobe(i
);
986 if (p
->target
!= target
)
988 retval
= get_flash_bank_by_num(i
, &p
);
989 if (retval
!= ERROR_OK
) {
990 LOG_ERROR("Connect failed. Consider setting up a gdb-attach event for the target " \
991 "to prepare target for GDB connect, or use 'gdb_memory_map disable'.");
997 gdb_actual_connections
++;
998 log_printf_lf(all_targets
->next
!= NULL
? LOG_LVL_INFO
: LOG_LVL_DEBUG
,
999 __FILE__
, __LINE__
, __func__
,
1000 "New GDB Connection: %d, Target %s, state: %s",
1001 gdb_actual_connections
,
1002 target_name(target
),
1003 target_state_name(target
));
1005 /* DANGER! If we fail subsequently, we must remove this handler,
1006 * otherwise we occasionally see crashes as the timer can invoke the
1009 * register callback to be informed about target events */
1010 target_register_event_callback(gdb_target_callback_event_handler
, connection
);
1015 static int gdb_connection_closed(struct connection
*connection
)
1017 struct target
*target
;
1018 struct gdb_connection
*gdb_connection
= connection
->priv
;
1020 target
= get_target_from_connection(connection
);
1022 /* we're done forwarding messages. Tear down callback before
1023 * cleaning up connection.
1025 log_remove_callback(gdb_log_callback
, connection
);
1027 gdb_actual_connections
--;
1028 LOG_DEBUG("GDB Close, Target: %s, state: %s, gdb_actual_connections=%d",
1029 target_name(target
),
1030 target_state_name(target
),
1031 gdb_actual_connections
);
1033 /* see if an image built with vFlash commands is left */
1034 if (gdb_connection
->vflash_image
) {
1035 image_close(gdb_connection
->vflash_image
);
1036 free(gdb_connection
->vflash_image
);
1037 gdb_connection
->vflash_image
= NULL
;
1040 /* if this connection registered a debug-message receiver delete it */
1041 delete_debug_msg_receiver(connection
->cmd_ctx
, target
);
1043 if (connection
->priv
) {
1044 free(connection
->priv
);
1045 connection
->priv
= NULL
;
1047 LOG_ERROR("BUG: connection->priv == NULL");
1049 target_unregister_event_callback(gdb_target_callback_event_handler
, connection
);
1051 target_call_event_callbacks(target
, TARGET_EVENT_GDB_END
);
1053 target_call_event_callbacks(target
, TARGET_EVENT_GDB_DETACH
);
1058 static void gdb_send_error(struct connection
*connection
, uint8_t the_error
)
1061 snprintf(err
, 4, "E%2.2X", the_error
);
1062 gdb_put_packet(connection
, err
, 3);
1065 static int gdb_last_signal_packet(struct connection
*connection
,
1066 char const *packet
, int packet_size
)
1068 struct target
*target
= get_target_from_connection(connection
);
1069 struct gdb_connection
*gdb_con
= connection
->priv
;
1073 if (!gdb_con
->attached
) {
1074 /* if we are here we have received a kill packet
1075 * reply W stop reply otherwise gdb gets very unhappy */
1076 gdb_put_packet(connection
, "W00", 3);
1080 signal_var
= gdb_last_signal(target
);
1082 snprintf(sig_reply
, 4, "S%2.2x", signal_var
);
1083 gdb_put_packet(connection
, sig_reply
, 3);
1088 static inline int gdb_reg_pos(struct target
*target
, int pos
, int len
)
1090 if (target
->endianness
== TARGET_LITTLE_ENDIAN
)
1093 return len
- 1 - pos
;
1096 /* Convert register to string of bytes. NB! The # of bits in the
1097 * register might be non-divisible by 8(a byte), in which
1098 * case an entire byte is shown.
1100 * NB! the format on the wire is the target endianness
1102 * The format of reg->value is little endian
1105 static void gdb_str_to_target(struct target
*target
,
1106 char *tstr
, struct reg
*reg
)
1113 buf_len
= DIV_ROUND_UP(reg
->size
, 8);
1115 for (i
= 0; i
< buf_len
; i
++) {
1116 int j
= gdb_reg_pos(target
, i
, buf_len
);
1117 tstr
+= sprintf(tstr
, "%02x", buf
[j
]);
1121 /* copy over in register buffer */
1122 static void gdb_target_to_reg(struct target
*target
,
1123 char const *tstr
, int str_len
, uint8_t *bin
)
1126 LOG_ERROR("BUG: gdb value with uneven number of characters encountered");
1131 for (i
= 0; i
< str_len
; i
+= 2) {
1133 if (sscanf(tstr
+ i
, "%02x", &t
) != 1) {
1134 LOG_ERROR("BUG: unable to convert register value");
1138 int j
= gdb_reg_pos(target
, i
/2, str_len
/2);
1143 static int gdb_get_registers_packet(struct connection
*connection
,
1144 char const *packet
, int packet_size
)
1146 struct target
*target
= get_target_from_connection(connection
);
1147 struct reg
**reg_list
;
1150 int reg_packet_size
= 0;
1155 #ifdef _DEBUG_GDB_IO_
1159 if ((target
->rtos
!= NULL
) && (ERROR_OK
== rtos_get_gdb_reg_list(connection
)))
1162 retval
= target_get_gdb_reg_list(target
, ®_list
, ®_list_size
,
1164 if (retval
!= ERROR_OK
)
1165 return gdb_error(connection
, retval
);
1167 for (i
= 0; i
< reg_list_size
; i
++)
1168 reg_packet_size
+= DIV_ROUND_UP(reg_list
[i
]->size
, 8) * 2;
1170 assert(reg_packet_size
> 0);
1172 reg_packet
= malloc(reg_packet_size
+ 1); /* plus one for string termination null */
1173 if (reg_packet
== NULL
)
1176 reg_packet_p
= reg_packet
;
1178 for (i
= 0; i
< reg_list_size
; i
++) {
1179 if (!reg_list
[i
]->valid
)
1180 reg_list
[i
]->type
->get(reg_list
[i
]);
1181 gdb_str_to_target(target
, reg_packet_p
, reg_list
[i
]);
1182 reg_packet_p
+= DIV_ROUND_UP(reg_list
[i
]->size
, 8) * 2;
1185 #ifdef _DEBUG_GDB_IO_
1187 char *reg_packet_p_debug
;
1188 reg_packet_p_debug
= strndup(reg_packet
, reg_packet_size
);
1189 LOG_DEBUG("reg_packet: %s", reg_packet_p_debug
);
1190 free(reg_packet_p_debug
);
1194 gdb_put_packet(connection
, reg_packet
, reg_packet_size
);
1202 static int gdb_set_registers_packet(struct connection
*connection
,
1203 char const *packet
, int packet_size
)
1205 struct target
*target
= get_target_from_connection(connection
);
1207 struct reg
**reg_list
;
1210 char const *packet_p
;
1212 #ifdef _DEBUG_GDB_IO_
1216 /* skip command character */
1220 if (packet_size
% 2) {
1221 LOG_WARNING("GDB set_registers packet with uneven characters received, dropping connection");
1222 return ERROR_SERVER_REMOTE_CLOSED
;
1225 retval
= target_get_gdb_reg_list(target
, ®_list
, ®_list_size
,
1227 if (retval
!= ERROR_OK
)
1228 return gdb_error(connection
, retval
);
1231 for (i
= 0; i
< reg_list_size
; i
++) {
1233 int chars
= (DIV_ROUND_UP(reg_list
[i
]->size
, 8) * 2);
1235 if (packet_p
+ chars
> packet
+ packet_size
)
1236 LOG_ERROR("BUG: register packet is too small for registers");
1238 bin_buf
= malloc(DIV_ROUND_UP(reg_list
[i
]->size
, 8));
1239 gdb_target_to_reg(target
, packet_p
, chars
, bin_buf
);
1241 reg_list
[i
]->type
->set(reg_list
[i
], bin_buf
);
1243 /* advance packet pointer */
1249 /* free struct reg *reg_list[] array allocated by get_gdb_reg_list */
1252 gdb_put_packet(connection
, "OK", 2);
1257 static int gdb_get_register_packet(struct connection
*connection
,
1258 char const *packet
, int packet_size
)
1260 struct target
*target
= get_target_from_connection(connection
);
1262 int reg_num
= strtoul(packet
+ 1, NULL
, 16);
1263 struct reg
**reg_list
;
1267 #ifdef _DEBUG_GDB_IO_
1271 retval
= target_get_gdb_reg_list(target
, ®_list
, ®_list_size
,
1273 if (retval
!= ERROR_OK
)
1274 return gdb_error(connection
, retval
);
1276 if (reg_list_size
<= reg_num
) {
1277 LOG_ERROR("gdb requested a non-existing register");
1278 return ERROR_SERVER_REMOTE_CLOSED
;
1281 if (!reg_list
[reg_num
]->valid
)
1282 reg_list
[reg_num
]->type
->get(reg_list
[reg_num
]);
1284 reg_packet
= malloc(DIV_ROUND_UP(reg_list
[reg_num
]->size
, 8) * 2 + 1); /* plus one for string termination null */
1286 gdb_str_to_target(target
, reg_packet
, reg_list
[reg_num
]);
1288 gdb_put_packet(connection
, reg_packet
, DIV_ROUND_UP(reg_list
[reg_num
]->size
, 8) * 2);
1296 static int gdb_set_register_packet(struct connection
*connection
,
1297 char const *packet
, int packet_size
)
1299 struct target
*target
= get_target_from_connection(connection
);
1302 int reg_num
= strtoul(packet
+ 1, &separator
, 16);
1303 struct reg
**reg_list
;
1309 retval
= target_get_gdb_reg_list(target
, ®_list
, ®_list_size
,
1311 if (retval
!= ERROR_OK
)
1312 return gdb_error(connection
, retval
);
1314 if (reg_list_size
<= reg_num
) {
1315 LOG_ERROR("gdb requested a non-existing register");
1316 return ERROR_SERVER_REMOTE_CLOSED
;
1319 if (*separator
!= '=') {
1320 LOG_ERROR("GDB 'set register packet', but no '=' following the register number");
1321 return ERROR_SERVER_REMOTE_CLOSED
;
1324 /* convert from GDB-string (target-endian) to hex-string (big-endian) */
1325 bin_buf
= malloc(DIV_ROUND_UP(reg_list
[reg_num
]->size
, 8));
1326 int chars
= (DIV_ROUND_UP(reg_list
[reg_num
]->size
, 8) * 2);
1328 if ((unsigned int)chars
!= strlen(separator
+ 1)) {
1329 LOG_ERROR("gdb sent a packet with wrong register size");
1331 return ERROR_SERVER_REMOTE_CLOSED
;
1334 gdb_target_to_reg(target
, separator
+ 1, chars
, bin_buf
);
1336 reg_list
[reg_num
]->type
->set(reg_list
[reg_num
], bin_buf
);
1338 gdb_put_packet(connection
, "OK", 2);
1346 /* No attempt is made to translate the "retval" to
1347 * GDB speak. This has to be done at the calling
1348 * site as no mapping really exists.
1350 static int gdb_error(struct connection
*connection
, int retval
)
1352 LOG_DEBUG("Reporting %i to GDB as generic error", retval
);
1353 gdb_send_error(connection
, EFAULT
);
1357 /* We don't have to worry about the default 2 second timeout for GDB packets,
1358 * because GDB breaks up large memory reads into smaller reads.
1360 * 8191 bytes by the looks of it. Why 8191 bytes instead of 8192?????
1362 static int gdb_read_memory_packet(struct connection
*connection
,
1363 char const *packet
, int packet_size
)
1365 struct target
*target
= get_target_from_connection(connection
);
1373 int retval
= ERROR_OK
;
1375 /* skip command character */
1378 addr
= strtoull(packet
, &separator
, 16);
1380 if (*separator
!= ',') {
1381 LOG_ERROR("incomplete read memory packet received, dropping connection");
1382 return ERROR_SERVER_REMOTE_CLOSED
;
1385 len
= strtoul(separator
+ 1, NULL
, 16);
1388 LOG_WARNING("invalid read memory packet received (len == 0)");
1389 gdb_put_packet(connection
, NULL
, 0);
1393 buffer
= malloc(len
);
1395 LOG_DEBUG("addr: 0x%16.16" PRIx64
", len: 0x%8.8" PRIx32
"", addr
, len
);
1397 retval
= target_read_buffer(target
, addr
, len
, buffer
);
1399 if ((retval
!= ERROR_OK
) && !gdb_report_data_abort
) {
1400 /* TODO : Here we have to lie and send back all zero's lest stack traces won't work.
1401 * At some point this might be fixed in GDB, in which case this code can be removed.
1403 * OpenOCD developers are acutely aware of this problem, but there is nothing
1404 * gained by involving the user in this problem that hopefully will get resolved
1407 * http://sourceware.org/cgi-bin/gnatsweb.pl? \
1408 * cmd = view%20audit-trail&database = gdb&pr = 2395
1410 * For now, the default is to fix up things to make current GDB versions work.
1411 * This can be overwritten using the gdb_report_data_abort <'enable'|'disable'> command.
1413 memset(buffer
, 0, len
);
1417 if (retval
== ERROR_OK
) {
1418 hex_buffer
= malloc(len
* 2 + 1);
1420 size_t pkt_len
= hexify(hex_buffer
, buffer
, len
, len
* 2 + 1);
1422 gdb_put_packet(connection
, hex_buffer
, pkt_len
);
1426 retval
= gdb_error(connection
, retval
);
1433 static int gdb_write_memory_packet(struct connection
*connection
,
1434 char const *packet
, int packet_size
)
1436 struct target
*target
= get_target_from_connection(connection
);
1444 /* skip command character */
1447 addr
= strtoull(packet
, &separator
, 16);
1449 if (*separator
!= ',') {
1450 LOG_ERROR("incomplete write memory packet received, dropping connection");
1451 return ERROR_SERVER_REMOTE_CLOSED
;
1454 len
= strtoul(separator
+ 1, &separator
, 16);
1456 if (*(separator
++) != ':') {
1457 LOG_ERROR("incomplete write memory packet received, dropping connection");
1458 return ERROR_SERVER_REMOTE_CLOSED
;
1461 buffer
= malloc(len
);
1463 LOG_DEBUG("addr: 0x%" PRIx64
", len: 0x%8.8" PRIx32
"", addr
, len
);
1465 if (unhexify(buffer
, separator
, len
) != len
)
1466 LOG_ERROR("unable to decode memory packet");
1468 retval
= target_write_buffer(target
, addr
, len
, buffer
);
1470 if (retval
== ERROR_OK
)
1471 gdb_put_packet(connection
, "OK", 2);
1473 retval
= gdb_error(connection
, retval
);
1480 static int gdb_write_memory_binary_packet(struct connection
*connection
,
1481 char const *packet
, int packet_size
)
1483 struct target
*target
= get_target_from_connection(connection
);
1488 int retval
= ERROR_OK
;
1489 /* Packets larger than fast_limit bytes will be acknowledged instantly on
1490 * the assumption that we're in a download and it's important to go as fast
1492 uint32_t fast_limit
= 8;
1494 /* skip command character */
1497 addr
= strtoull(packet
, &separator
, 16);
1499 if (*separator
!= ',') {
1500 LOG_ERROR("incomplete write memory binary packet received, dropping connection");
1501 return ERROR_SERVER_REMOTE_CLOSED
;
1504 len
= strtoul(separator
+ 1, &separator
, 16);
1506 if (*(separator
++) != ':') {
1507 LOG_ERROR("incomplete write memory binary packet received, dropping connection");
1508 return ERROR_SERVER_REMOTE_CLOSED
;
1511 struct gdb_connection
*gdb_connection
= connection
->priv
;
1513 if (gdb_connection
->mem_write_error
)
1514 retval
= ERROR_FAIL
;
1516 if (retval
== ERROR_OK
) {
1517 if (len
>= fast_limit
) {
1518 /* By replying the packet *immediately* GDB will send us a new packet
1519 * while we write the last one to the target.
1520 * We only do this for larger writes, so that users who do something like:
1521 * p *((int*)0xdeadbeef)=8675309
1522 * will get immediate feedback that that write failed.
1524 gdb_put_packet(connection
, "OK", 2);
1527 retval
= gdb_error(connection
, retval
);
1528 /* now that we have reported the memory write error, we can clear the condition */
1529 gdb_connection
->mem_write_error
= false;
1530 if (retval
!= ERROR_OK
)
1535 LOG_DEBUG("addr: 0x%" PRIx64
", len: 0x%8.8" PRIx32
"", addr
, len
);
1537 retval
= target_write_buffer(target
, addr
, len
, (uint8_t *)separator
);
1538 if (retval
!= ERROR_OK
)
1539 gdb_connection
->mem_write_error
= true;
1542 if (len
< fast_limit
) {
1543 if (retval
!= ERROR_OK
) {
1544 gdb_error(connection
, retval
);
1545 gdb_connection
->mem_write_error
= false;
1547 gdb_put_packet(connection
, "OK", 2);
1554 static int gdb_step_continue_packet(struct connection
*connection
,
1555 char const *packet
, int packet_size
)
1557 struct target
*target
= get_target_from_connection(connection
);
1559 uint64_t address
= 0x0;
1560 int retval
= ERROR_OK
;
1564 if (packet_size
> 1)
1565 address
= strtoull(packet
+ 1, NULL
, 16);
1569 gdb_running_type
= packet
[0];
1570 if (packet
[0] == 'c') {
1571 LOG_DEBUG("continue");
1572 /* resume at current address, don't handle breakpoints, not debugging */
1573 retval
= target_resume(target
, current
, address
, 0, 0);
1574 } else if (packet
[0] == 's') {
1576 /* step at current or address, don't handle breakpoints */
1577 retval
= target_step(target
, current
, address
, 0);
1582 static int gdb_breakpoint_watchpoint_packet(struct connection
*connection
,
1583 char const *packet
, int packet_size
)
1585 struct target
*target
= get_target_from_connection(connection
);
1587 enum breakpoint_type bp_type
= BKPT_SOFT
/* dummy init to avoid warning */;
1588 enum watchpoint_rw wp_type
= WPT_READ
/* dummy init to avoid warning */;
1596 type
= strtoul(packet
+ 1, &separator
, 16);
1598 if (type
== 0) /* memory breakpoint */
1599 bp_type
= BKPT_SOFT
;
1600 else if (type
== 1) /* hardware breakpoint */
1601 bp_type
= BKPT_HARD
;
1602 else if (type
== 2) /* write watchpoint */
1603 wp_type
= WPT_WRITE
;
1604 else if (type
== 3) /* read watchpoint */
1606 else if (type
== 4) /* access watchpoint */
1607 wp_type
= WPT_ACCESS
;
1609 LOG_ERROR("invalid gdb watch/breakpoint type(%d), dropping connection", type
);
1610 return ERROR_SERVER_REMOTE_CLOSED
;
1613 if (gdb_breakpoint_override
&& ((bp_type
== BKPT_SOFT
) || (bp_type
== BKPT_HARD
)))
1614 bp_type
= gdb_breakpoint_override_type
;
1616 if (*separator
!= ',') {
1617 LOG_ERROR("incomplete breakpoint/watchpoint packet received, dropping connection");
1618 return ERROR_SERVER_REMOTE_CLOSED
;
1621 address
= strtoull(separator
+ 1, &separator
, 16);
1623 if (*separator
!= ',') {
1624 LOG_ERROR("incomplete breakpoint/watchpoint packet received, dropping connection");
1625 return ERROR_SERVER_REMOTE_CLOSED
;
1628 size
= strtoul(separator
+ 1, &separator
, 16);
1633 if (packet
[0] == 'Z') {
1634 retval
= breakpoint_add(target
, address
, size
, bp_type
);
1635 if (retval
!= ERROR_OK
) {
1636 retval
= gdb_error(connection
, retval
);
1637 if (retval
!= ERROR_OK
)
1640 gdb_put_packet(connection
, "OK", 2);
1642 breakpoint_remove(target
, address
);
1643 gdb_put_packet(connection
, "OK", 2);
1650 if (packet
[0] == 'Z') {
1651 retval
= watchpoint_add(target
, address
, size
, wp_type
, 0, 0xffffffffu
);
1652 if (retval
!= ERROR_OK
) {
1653 retval
= gdb_error(connection
, retval
);
1654 if (retval
!= ERROR_OK
)
1657 gdb_put_packet(connection
, "OK", 2);
1659 watchpoint_remove(target
, address
);
1660 gdb_put_packet(connection
, "OK", 2);
1671 /* print out a string and allocate more space as needed,
1672 * mainly used for XML at this point
1674 static void xml_printf(int *retval
, char **xml
, int *pos
, int *size
,
1675 const char *fmt
, ...)
1677 if (*retval
!= ERROR_OK
)
1682 if ((*xml
== NULL
) || (!first
)) {
1683 /* start by 0 to exercise all the code paths.
1684 * Need minimum 2 bytes to fit 1 char and 0 terminator. */
1686 *size
= *size
* 2 + 2;
1688 *xml
= realloc(*xml
, *size
);
1692 *retval
= ERROR_SERVER_REMOTE_CLOSED
;
1700 ret
= vsnprintf(*xml
+ *pos
, *size
- *pos
, fmt
, ap
);
1702 if ((ret
> 0) && ((ret
+ 1) < *size
- *pos
)) {
1706 /* there was just enough or not enough space, allocate more. */
1711 static int decode_xfer_read(char const *buf
, char **annex
, int *ofs
, unsigned int *len
)
1713 /* Locate the annex. */
1714 const char *annex_end
= strchr(buf
, ':');
1715 if (annex_end
== NULL
)
1718 /* After the read marker and annex, qXfer looks like a
1719 * traditional 'm' packet. */
1721 *ofs
= strtoul(annex_end
+ 1, &separator
, 16);
1723 if (*separator
!= ',')
1726 *len
= strtoul(separator
+ 1, NULL
, 16);
1728 /* Extract the annex if needed */
1729 if (annex
!= NULL
) {
1730 *annex
= strndup(buf
, annex_end
- buf
);
1738 static int compare_bank(const void *a
, const void *b
)
1740 struct flash_bank
*b1
, *b2
;
1741 b1
= *((struct flash_bank
**)a
);
1742 b2
= *((struct flash_bank
**)b
);
1744 if (b1
->base
== b2
->base
)
1746 else if (b1
->base
> b2
->base
)
1752 static int gdb_memory_map(struct connection
*connection
,
1753 char const *packet
, int packet_size
)
1755 /* We get away with only specifying flash here. Regions that are not
1756 * specified are treated as if we provided no memory map(if not we
1757 * could detect the holes and mark them as RAM).
1758 * Normally we only execute this code once, but no big deal if we
1759 * have to regenerate it a couple of times.
1762 struct target
*target
= get_target_from_connection(connection
);
1763 struct flash_bank
*p
;
1767 int retval
= ERROR_OK
;
1768 struct flash_bank
**banks
;
1772 uint32_t ram_start
= 0;
1774 int target_flash_banks
= 0;
1776 /* skip command character */
1779 offset
= strtoul(packet
, &separator
, 16);
1780 length
= strtoul(separator
+ 1, &separator
, 16);
1782 xml_printf(&retval
, &xml
, &pos
, &size
, "<memory-map>\n");
1784 /* Sort banks in ascending order. We need to report non-flash
1785 * memory as ram (or rather read/write) by default for GDB, since
1786 * it has no concept of non-cacheable read/write memory (i/o etc).
1788 * FIXME Most non-flash addresses are *NOT* RAM! Don't lie.
1789 * Current versions of GDB assume unlisted addresses are RAM...
1791 banks
= malloc(sizeof(struct flash_bank
*)*flash_get_bank_count());
1793 for (i
= 0; i
< flash_get_bank_count(); i
++) {
1794 p
= get_flash_bank_by_num_noprobe(i
);
1795 if (p
->target
!= target
)
1797 retval
= get_flash_bank_by_num(i
, &p
);
1798 if (retval
!= ERROR_OK
) {
1800 gdb_error(connection
, retval
);
1803 banks
[target_flash_banks
++] = p
;
1806 qsort(banks
, target_flash_banks
, sizeof(struct flash_bank
*),
1809 for (i
= 0; i
< target_flash_banks
; i
++) {
1811 unsigned sector_size
= 0;
1817 if (ram_start
< p
->base
)
1818 xml_printf(&retval
, &xml
, &pos
, &size
,
1819 "<memory type=\"ram\" start=\"0x%x\" "
1820 "length=\"0x%x\"/>\n",
1821 ram_start
, p
->base
- ram_start
);
1823 /* Report adjacent groups of same-size sectors. So for
1824 * example top boot CFI flash will list an initial region
1825 * with several large sectors (maybe 128KB) and several
1826 * smaller ones at the end (maybe 32KB). STR7 will have
1827 * regions with 8KB, 32KB, and 64KB sectors; etc.
1829 for (j
= 0; j
< p
->num_sectors
; j
++) {
1832 /* Maybe start a new group of sectors. */
1833 if (sector_size
== 0) {
1834 start
= p
->base
+ p
->sectors
[j
].offset
;
1835 xml_printf(&retval
, &xml
, &pos
, &size
,
1836 "<memory type=\"flash\" "
1839 sector_size
= p
->sectors
[j
].size
;
1842 /* Does this finish a group of sectors?
1843 * If not, continue an already-started group.
1845 if (j
== p
->num_sectors
- 1)
1846 group_len
= (p
->base
+ p
->size
) - start
;
1847 else if (p
->sectors
[j
+ 1].size
!= sector_size
)
1848 group_len
= p
->base
+ p
->sectors
[j
+ 1].offset
1853 xml_printf(&retval
, &xml
, &pos
, &size
,
1854 "length=\"0x%x\">\n"
1855 "<property name=\"blocksize\">"
1863 ram_start
= p
->base
+ p
->size
;
1867 xml_printf(&retval
, &xml
, &pos
, &size
,
1868 "<memory type=\"ram\" start=\"0x%x\" "
1869 "length=\"0x%x\"/>\n",
1870 ram_start
, 0-ram_start
);
1871 /* ELSE a flash chip could be at the very end of the 32 bit address
1872 * space, in which case ram_start will be precisely 0
1878 xml_printf(&retval
, &xml
, &pos
, &size
, "</memory-map>\n");
1880 if (retval
!= ERROR_OK
) {
1881 gdb_error(connection
, retval
);
1885 if (offset
+ length
> pos
)
1886 length
= pos
- offset
;
1888 char *t
= malloc(length
+ 1);
1890 memcpy(t
+ 1, xml
+ offset
, length
);
1891 gdb_put_packet(connection
, t
, length
+ 1);
1898 static const char *gdb_get_reg_type_name(enum reg_type type
)
1905 case REG_TYPE_INT16
:
1907 case REG_TYPE_INT32
:
1909 case REG_TYPE_INT64
:
1911 case REG_TYPE_INT128
:
1913 case REG_TYPE_UINT8
:
1915 case REG_TYPE_UINT16
:
1917 case REG_TYPE_UINT32
:
1919 case REG_TYPE_UINT64
:
1921 case REG_TYPE_UINT128
:
1923 case REG_TYPE_CODE_PTR
:
1925 case REG_TYPE_DATA_PTR
:
1927 case REG_TYPE_FLOAT
:
1929 case REG_TYPE_IEEE_SINGLE
:
1930 return "ieee_single";
1931 case REG_TYPE_IEEE_DOUBLE
:
1932 return "ieee_double";
1933 case REG_TYPE_ARCH_DEFINED
:
1934 return "int"; /* return arbitrary string to avoid compile warning. */
1937 return "int"; /* "int" as default value */
1940 static int gdb_generate_reg_type_description(struct target
*target
,
1941 char **tdesc
, int *pos
, int *size
, struct reg_data_type
*type
)
1943 int retval
= ERROR_OK
;
1945 if (type
->type_class
== REG_TYPE_CLASS_VECTOR
) {
1946 /* <vector id="id" type="type" count="count"/> */
1947 xml_printf(&retval
, tdesc
, pos
, size
,
1948 "<vector id=\"%s\" type=\"%s\" count=\"%d\"/>\n",
1949 type
->id
, type
->reg_type_vector
->type
->id
,
1950 type
->reg_type_vector
->count
);
1952 } else if (type
->type_class
== REG_TYPE_CLASS_UNION
) {
1954 * <field name="name" type="type"/> ...
1956 xml_printf(&retval
, tdesc
, pos
, size
,
1957 "<union id=\"%s\">\n",
1960 struct reg_data_type_union_field
*field
;
1961 field
= type
->reg_type_union
->fields
;
1962 while (field
!= NULL
) {
1963 xml_printf(&retval
, tdesc
, pos
, size
,
1964 "<field name=\"%s\" type=\"%s\"/>\n",
1965 field
->name
, field
->type
->id
);
1967 field
= field
->next
;
1970 xml_printf(&retval
, tdesc
, pos
, size
,
1973 } else if (type
->type_class
== REG_TYPE_CLASS_STRUCT
) {
1974 struct reg_data_type_struct_field
*field
;
1975 field
= type
->reg_type_struct
->fields
;
1977 if (field
->use_bitfields
) {
1978 /* <struct id="id" size="size">
1979 * <field name="name" start="start" end="end"/> ...
1981 xml_printf(&retval
, tdesc
, pos
, size
,
1982 "<struct id=\"%s\" size=\"%d\">\n",
1983 type
->id
, type
->reg_type_struct
->size
);
1984 while (field
!= NULL
) {
1985 xml_printf(&retval
, tdesc
, pos
, size
,
1986 "<field name=\"%s\" start=\"%d\" end=\"%d\"/>\n",
1987 field
->name
, field
->bitfield
->start
,
1988 field
->bitfield
->end
);
1990 field
= field
->next
;
1994 * <field name="name" type="type"/> ...
1996 xml_printf(&retval
, tdesc
, pos
, size
,
1997 "<struct id=\"%s\">\n",
1999 while (field
!= NULL
) {
2000 xml_printf(&retval
, tdesc
, pos
, size
,
2001 "<field name=\"%s\" type=\"%s\"/>\n",
2002 field
->name
, field
->type
->id
);
2004 field
= field
->next
;
2008 xml_printf(&retval
, tdesc
, pos
, size
,
2011 } else if (type
->type_class
== REG_TYPE_CLASS_FLAGS
) {
2012 /* <flags id="id" size="size">
2013 * <field name="name" start="start" end="end"/> ...
2015 xml_printf(&retval
, tdesc
, pos
, size
,
2016 "<flags id=\"%s\" size=\"%d\">\n",
2017 type
->id
, type
->reg_type_flags
->size
);
2019 struct reg_data_type_flags_field
*field
;
2020 field
= type
->reg_type_flags
->fields
;
2021 while (field
!= NULL
) {
2022 xml_printf(&retval
, tdesc
, pos
, size
,
2023 "<field name=\"%s\" start=\"%d\" end=\"%d\"/>\n",
2024 field
->name
, field
->bitfield
->start
, field
->bitfield
->end
);
2026 field
= field
->next
;
2029 xml_printf(&retval
, tdesc
, pos
, size
,
2037 /* Get a list of available target registers features. feature_list must
2038 * be freed by caller.
2040 static int get_reg_features_list(struct target
*target
, char const **feature_list
[], int *feature_list_size
,
2041 struct reg
**reg_list
, int reg_list_size
)
2045 /* Start with only one element */
2046 *feature_list
= calloc(1, sizeof(char *));
2048 for (int i
= 0; i
< reg_list_size
; i
++) {
2049 if (reg_list
[i
]->exist
== false)
2052 if (reg_list
[i
]->feature
!= NULL
2053 && reg_list
[i
]->feature
->name
!= NULL
2054 && (strcmp(reg_list
[i
]->feature
->name
, ""))) {
2055 /* We found a feature, check if the feature is already in the
2056 * table. If not, allocate a new entry for the table and
2057 * put the new feature in it.
2059 for (int j
= 0; j
< (tbl_sz
+ 1); j
++) {
2060 if (!((*feature_list
)[j
])) {
2061 (*feature_list
)[tbl_sz
++] = reg_list
[i
]->feature
->name
;
2062 *feature_list
= realloc(*feature_list
, sizeof(char *) * (tbl_sz
+ 1));
2063 (*feature_list
)[tbl_sz
] = NULL
;
2066 if (!strcmp((*feature_list
)[j
], reg_list
[i
]->feature
->name
))
2073 if (feature_list_size
)
2074 *feature_list_size
= tbl_sz
;
2079 static int gdb_generate_target_description(struct target
*target
, char **tdesc_out
)
2081 int retval
= ERROR_OK
;
2082 struct reg
**reg_list
= NULL
;
2084 char const **features
= NULL
;
2085 int feature_list_size
= 0;
2090 retval
= target_get_gdb_reg_list(target
, ®_list
,
2091 ®_list_size
, REG_CLASS_ALL
);
2093 if (retval
!= ERROR_OK
) {
2094 LOG_ERROR("get register list failed");
2095 retval
= ERROR_FAIL
;
2099 if (reg_list_size
<= 0) {
2100 LOG_ERROR("get register list failed");
2101 retval
= ERROR_FAIL
;
2105 /* Get a list of available target registers features */
2106 retval
= get_reg_features_list(target
, &features
, &feature_list_size
, reg_list
, reg_list_size
);
2107 if (retval
!= ERROR_OK
) {
2108 LOG_ERROR("Can't get the registers feature list");
2109 retval
= ERROR_FAIL
;
2113 /* If we found some features associated with registers, create sections */
2114 int current_feature
= 0;
2116 xml_printf(&retval
, &tdesc
, &pos
, &size
,
2117 "<?xml version=\"1.0\"?>\n"
2118 "<!DOCTYPE target SYSTEM \"gdb-target.dtd\">\n"
2119 "<target version=\"1.0\">\n");
2121 /* generate target description according to register list */
2122 if (features
!= NULL
) {
2123 while (features
[current_feature
]) {
2125 xml_printf(&retval
, &tdesc
, &pos
, &size
,
2126 "<feature name=\"%s\">\n",
2127 features
[current_feature
]);
2130 for (i
= 0; i
< reg_list_size
; i
++) {
2132 if (reg_list
[i
]->exist
== false)
2135 if (strcmp(reg_list
[i
]->feature
->name
, features
[current_feature
]))
2138 const char *type_str
;
2139 if (reg_list
[i
]->reg_data_type
!= NULL
) {
2140 if (reg_list
[i
]->reg_data_type
->type
== REG_TYPE_ARCH_DEFINED
) {
2141 /* generate <type... first, if there are architecture-defined types. */
2142 gdb_generate_reg_type_description(target
, &tdesc
, &pos
, &size
,
2143 reg_list
[i
]->reg_data_type
);
2145 type_str
= reg_list
[i
]->reg_data_type
->id
;
2147 /* predefined type */
2148 type_str
= gdb_get_reg_type_name(
2149 reg_list
[i
]->reg_data_type
->type
);
2152 /* Default type is "int" */
2156 xml_printf(&retval
, &tdesc
, &pos
, &size
,
2157 "<reg name=\"%s\"", reg_list
[i
]->name
);
2158 xml_printf(&retval
, &tdesc
, &pos
, &size
,
2159 " bitsize=\"%d\"", reg_list
[i
]->size
);
2160 xml_printf(&retval
, &tdesc
, &pos
, &size
,
2161 " regnum=\"%d\"", reg_list
[i
]->number
);
2162 if (reg_list
[i
]->caller_save
)
2163 xml_printf(&retval
, &tdesc
, &pos
, &size
,
2164 " save-restore=\"yes\"");
2166 xml_printf(&retval
, &tdesc
, &pos
, &size
,
2167 " save-restore=\"no\"");
2169 xml_printf(&retval
, &tdesc
, &pos
, &size
,
2170 " type=\"%s\"", type_str
);
2172 if (reg_list
[i
]->group
!= NULL
)
2173 xml_printf(&retval
, &tdesc
, &pos
, &size
,
2174 " group=\"%s\"", reg_list
[i
]->group
);
2176 xml_printf(&retval
, &tdesc
, &pos
, &size
,
2180 xml_printf(&retval
, &tdesc
, &pos
, &size
,
2187 xml_printf(&retval
, &tdesc
, &pos
, &size
,
2194 if (retval
== ERROR_OK
)
2202 static int gdb_get_target_description_chunk(struct target
*target
, struct target_desc_format
*target_desc
,
2203 char **chunk
, int32_t offset
, uint32_t length
)
2205 if (target_desc
== NULL
) {
2206 LOG_ERROR("Unable to Generate Target Description");
2210 char *tdesc
= target_desc
->tdesc
;
2211 uint32_t tdesc_length
= target_desc
->tdesc_length
;
2213 if (tdesc
== NULL
) {
2214 int retval
= gdb_generate_target_description(target
, &tdesc
);
2215 if (retval
!= ERROR_OK
) {
2216 LOG_ERROR("Unable to Generate Target Description");
2220 tdesc_length
= strlen(tdesc
);
2225 if (length
< (tdesc_length
- offset
))
2226 transfer_type
= 'm';
2228 transfer_type
= 'l';
2230 *chunk
= malloc(length
+ 2);
2231 if (*chunk
== NULL
) {
2232 LOG_ERROR("Unable to allocate memory");
2236 (*chunk
)[0] = transfer_type
;
2237 if (transfer_type
== 'm') {
2238 strncpy((*chunk
) + 1, tdesc
+ offset
, length
);
2239 (*chunk
)[1 + length
] = '\0';
2241 strncpy((*chunk
) + 1, tdesc
+ offset
, tdesc_length
- offset
);
2242 (*chunk
)[1 + (tdesc_length
- offset
)] = '\0';
2244 /* After gdb-server sends out last chunk, invalidate tdesc. */
2250 target_desc
->tdesc
= tdesc
;
2251 target_desc
->tdesc_length
= tdesc_length
;
2256 static int gdb_target_description_supported(struct target
*target
, int *supported
)
2258 int retval
= ERROR_OK
;
2259 struct reg
**reg_list
= NULL
;
2260 int reg_list_size
= 0;
2261 char const **features
= NULL
;
2262 int feature_list_size
= 0;
2264 retval
= target_get_gdb_reg_list(target
, ®_list
,
2265 ®_list_size
, REG_CLASS_ALL
);
2266 if (retval
!= ERROR_OK
) {
2267 LOG_ERROR("get register list failed");
2271 if (reg_list_size
<= 0) {
2272 LOG_ERROR("get register list failed");
2273 retval
= ERROR_FAIL
;
2277 /* Get a list of available target registers features */
2278 retval
= get_reg_features_list(target
, &features
, &feature_list_size
, reg_list
, reg_list_size
);
2279 if (retval
!= ERROR_OK
) {
2280 LOG_ERROR("Can't get the registers feature list");
2285 if (feature_list_size
)
2299 static int gdb_generate_thread_list(struct target
*target
, char **thread_list_out
)
2301 struct rtos
*rtos
= target
->rtos
;
2302 int retval
= ERROR_OK
;
2303 char *thread_list
= NULL
;
2307 xml_printf(&retval
, &thread_list
, &pos
, &size
,
2308 "<?xml version=\"1.0\"?>\n"
2312 for (int i
= 0; i
< rtos
->thread_count
; i
++) {
2313 struct thread_detail
*thread_detail
= &rtos
->thread_details
[i
];
2315 if (!thread_detail
->exists
)
2318 xml_printf(&retval
, &thread_list
, &pos
, &size
,
2319 "<thread id=\"%" PRIx64
"\">", thread_detail
->threadid
);
2321 if (thread_detail
->thread_name_str
!= NULL
)
2322 xml_printf(&retval
, &thread_list
, &pos
, &size
,
2323 "Name: %s", thread_detail
->thread_name_str
);
2325 if (thread_detail
->extra_info_str
!= NULL
) {
2326 if (thread_detail
->thread_name_str
!= NULL
)
2327 xml_printf(&retval
, &thread_list
, &pos
, &size
,
2329 xml_printf(&retval
, &thread_list
, &pos
, &size
,
2330 thread_detail
->extra_info_str
);
2333 xml_printf(&retval
, &thread_list
, &pos
, &size
,
2338 xml_printf(&retval
, &thread_list
, &pos
, &size
,
2341 if (retval
== ERROR_OK
)
2342 *thread_list_out
= thread_list
;
2349 static int gdb_get_thread_list_chunk(struct target
*target
, char **thread_list
,
2350 char **chunk
, int32_t offset
, uint32_t length
)
2352 if (*thread_list
== NULL
) {
2353 int retval
= gdb_generate_thread_list(target
, thread_list
);
2354 if (retval
!= ERROR_OK
) {
2355 LOG_ERROR("Unable to Generate Thread List");
2360 size_t thread_list_length
= strlen(*thread_list
);
2363 length
= MIN(length
, thread_list_length
- offset
);
2364 if (length
< (thread_list_length
- offset
))
2365 transfer_type
= 'm';
2367 transfer_type
= 'l';
2369 *chunk
= malloc(length
+ 2);
2370 if (*chunk
== NULL
) {
2371 LOG_ERROR("Unable to allocate memory");
2375 (*chunk
)[0] = transfer_type
;
2376 strncpy((*chunk
) + 1, (*thread_list
) + offset
, length
);
2377 (*chunk
)[1 + length
] = '\0';
2379 /* After gdb-server sends out last chunk, invalidate thread list. */
2380 if (transfer_type
== 'l') {
2382 *thread_list
= NULL
;
2388 static int gdb_query_packet(struct connection
*connection
,
2389 char const *packet
, int packet_size
)
2391 struct command_context
*cmd_ctx
= connection
->cmd_ctx
;
2392 struct gdb_connection
*gdb_connection
= connection
->priv
;
2393 struct target
*target
= get_target_from_connection(connection
);
2395 if (strncmp(packet
, "qRcmd,", 6) == 0) {
2396 if (packet_size
> 6) {
2398 cmd
= malloc((packet_size
- 6) / 2 + 1);
2399 size_t len
= unhexify((uint8_t *)cmd
, packet
+ 6, (packet_size
- 6) / 2);
2402 /* We want to print all debug output to GDB connection */
2403 log_add_callback(gdb_log_callback
, connection
);
2404 target_call_timer_callbacks_now();
2405 /* some commands need to know the GDB connection, make note of current
2406 * GDB connection. */
2407 current_gdb_connection
= gdb_connection
;
2408 command_run_line(cmd_ctx
, cmd
);
2409 current_gdb_connection
= NULL
;
2410 target_call_timer_callbacks_now();
2411 log_remove_callback(gdb_log_callback
, connection
);
2414 gdb_put_packet(connection
, "OK", 2);
2416 } else if (strncmp(packet
, "qCRC:", 5) == 0) {
2417 if (packet_size
> 5) {
2422 target_addr_t addr
= 0;
2425 /* skip command character */
2428 addr
= strtoull(packet
, &separator
, 16);
2430 if (*separator
!= ',') {
2431 LOG_ERROR("incomplete read memory packet received, dropping connection");
2432 return ERROR_SERVER_REMOTE_CLOSED
;
2435 len
= strtoul(separator
+ 1, NULL
, 16);
2437 retval
= target_checksum_memory(target
, addr
, len
, &checksum
);
2439 if (retval
== ERROR_OK
) {
2440 snprintf(gdb_reply
, 10, "C%8.8" PRIx32
"", checksum
);
2441 gdb_put_packet(connection
, gdb_reply
, 9);
2443 retval
= gdb_error(connection
, retval
);
2444 if (retval
!= ERROR_OK
)
2450 } else if (strncmp(packet
, "qSupported", 10) == 0) {
2451 /* we currently support packet size and qXfer:memory-map:read (if enabled)
2452 * qXfer:features:read is supported for some targets */
2453 int retval
= ERROR_OK
;
2454 char *buffer
= NULL
;
2457 int gdb_target_desc_supported
= 0;
2459 /* we need to test that the target supports target descriptions */
2460 retval
= gdb_target_description_supported(target
, &gdb_target_desc_supported
);
2461 if (retval
!= ERROR_OK
) {
2462 LOG_INFO("Failed detecting Target Description Support, disabling");
2463 gdb_target_desc_supported
= 0;
2466 /* support may be disabled globally */
2467 if (gdb_use_target_description
== 0) {
2468 if (gdb_target_desc_supported
)
2469 LOG_WARNING("Target Descriptions Supported, but disabled");
2470 gdb_target_desc_supported
= 0;
2477 "PacketSize=%x;qXfer:memory-map:read%c;qXfer:features:read%c;qXfer:threads:read+;QStartNoAckMode+;vContSupported+",
2478 (GDB_BUFFER_SIZE
- 1),
2479 ((gdb_use_memory_map
== 1) && (flash_get_bank_count() > 0)) ? '+' : '-',
2480 (gdb_target_desc_supported
== 1) ? '+' : '-');
2482 if (retval
!= ERROR_OK
) {
2483 gdb_send_error(connection
, 01);
2487 gdb_put_packet(connection
, buffer
, strlen(buffer
));
2491 } else if ((strncmp(packet
, "qXfer:memory-map:read::", 23) == 0)
2492 && (flash_get_bank_count() > 0))
2493 return gdb_memory_map(connection
, packet
, packet_size
);
2494 else if (strncmp(packet
, "qXfer:features:read:", 20) == 0) {
2496 int retval
= ERROR_OK
;
2499 unsigned int length
;
2501 /* skip command character */
2504 if (decode_xfer_read(packet
, NULL
, &offset
, &length
) < 0) {
2505 gdb_send_error(connection
, 01);
2509 /* Target should prepare correct target description for annex.
2510 * The first character of returned xml is 'm' or 'l'. 'm' for
2511 * there are *more* chunks to transfer. 'l' for it is the *last*
2512 * chunk of target description.
2514 retval
= gdb_get_target_description_chunk(target
, &gdb_connection
->target_desc
,
2515 &xml
, offset
, length
);
2516 if (retval
!= ERROR_OK
) {
2517 gdb_error(connection
, retval
);
2521 gdb_put_packet(connection
, xml
, strlen(xml
));
2525 } else if (strncmp(packet
, "qXfer:threads:read:", 19) == 0) {
2527 int retval
= ERROR_OK
;
2530 unsigned int length
;
2532 /* skip command character */
2535 if (decode_xfer_read(packet
, NULL
, &offset
, &length
) < 0) {
2536 gdb_send_error(connection
, 01);
2540 /* Target should prepare correct thread list for annex.
2541 * The first character of returned xml is 'm' or 'l'. 'm' for
2542 * there are *more* chunks to transfer. 'l' for it is the *last*
2543 * chunk of target description.
2545 retval
= gdb_get_thread_list_chunk(target
, &gdb_connection
->thread_list
,
2546 &xml
, offset
, length
);
2547 if (retval
!= ERROR_OK
) {
2548 gdb_error(connection
, retval
);
2552 gdb_put_packet(connection
, xml
, strlen(xml
));
2556 } else if (strncmp(packet
, "QStartNoAckMode", 15) == 0) {
2557 gdb_connection
->noack_mode
= 1;
2558 gdb_put_packet(connection
, "OK", 2);
2562 gdb_put_packet(connection
, "", 0);
2566 static bool gdb_handle_vcont_packet(struct connection
*connection
, const char *packet
, int packet_size
)
2568 struct gdb_connection
*gdb_connection
= connection
->priv
;
2569 struct target
*target
= get_target_from_connection(connection
);
2570 const char *parse
= packet
;
2573 /* query for vCont supported */
2574 if (parse
[0] == '?') {
2575 if (target
->type
->step
!= NULL
) {
2576 /* gdb doesn't accept c without C and s without S */
2577 gdb_put_packet(connection
, "vCont;c;C;s;S", 13);
2583 if (parse
[0] == ';') {
2588 /* simple case, a continue packet */
2589 if (parse
[0] == 'c') {
2590 LOG_DEBUG("target %s continue", target_name(target
));
2591 log_add_callback(gdb_log_callback
, connection
);
2592 retval
= target_resume(target
, 1, 0, 0, 0);
2593 if (retval
== ERROR_OK
) {
2594 gdb_connection
->frontend_state
= TARGET_RUNNING
;
2595 target_call_event_callbacks(target
, TARGET_EVENT_GDB_START
);
2600 /* single-step or step-over-breakpoint */
2601 if (parse
[0] == 's') {
2602 if (strncmp(parse
, "s:", 2) == 0) {
2603 int handle_breakpoint
= 1;
2604 struct target
*ct
= target
;
2611 thread_id
= strtoll(parse
, &endp
, 16);
2613 packet_size
-= endp
- parse
;
2617 if (parse
[0] == ';') {
2621 if (parse
[0] == 'c') {
2625 handle_breakpoint
= 0;
2629 LOG_DEBUG("target %s single-step thread %"PRId64
, target_name(ct
), thread_id
);
2630 retval
= target_step(ct
, 1, 0, handle_breakpoint
);
2631 if (retval
== ERROR_OK
) {
2632 gdb_signal_reply(target
, connection
);
2633 /* stop forwarding log packets! */
2634 log_remove_callback(gdb_log_callback
, connection
);
2636 if (retval
== ERROR_TARGET_TIMEOUT
) {
2637 gdb_connection
->frontend_state
= TARGET_RUNNING
;
2638 target_call_event_callbacks(ct
, TARGET_EVENT_GDB_START
);
2641 LOG_ERROR("Unknown vCont packet");
2650 static int gdb_v_packet(struct connection
*connection
,
2651 char const *packet
, int packet_size
)
2653 struct gdb_connection
*gdb_connection
= connection
->priv
;
2654 struct target
*target
;
2657 target
= get_target_from_connection(connection
);
2659 if (strncmp(packet
, "vCont", 5) == 0) {
2665 handled
= gdb_handle_vcont_packet(connection
, packet
, packet_size
);
2667 gdb_put_packet(connection
, "", 0);
2672 /* if flash programming disabled - send a empty reply */
2674 if (gdb_flash_program
== 0) {
2675 gdb_put_packet(connection
, "", 0);
2679 if (strncmp(packet
, "vFlashErase:", 12) == 0) {
2681 unsigned long length
;
2683 char const *parse
= packet
+ 12;
2684 if (*parse
== '\0') {
2685 LOG_ERROR("incomplete vFlashErase packet received, dropping connection");
2686 return ERROR_SERVER_REMOTE_CLOSED
;
2689 addr
= strtoul(parse
, (char **)&parse
, 16);
2691 if (*(parse
++) != ',' || *parse
== '\0') {
2692 LOG_ERROR("incomplete vFlashErase packet received, dropping connection");
2693 return ERROR_SERVER_REMOTE_CLOSED
;
2696 length
= strtoul(parse
, (char **)&parse
, 16);
2698 if (*parse
!= '\0') {
2699 LOG_ERROR("incomplete vFlashErase packet received, dropping connection");
2700 return ERROR_SERVER_REMOTE_CLOSED
;
2703 /* assume all sectors need erasing - stops any problems
2704 * when flash_write is called multiple times */
2707 /* perform any target specific operations before the erase */
2708 target_call_event_callbacks(target
,
2709 TARGET_EVENT_GDB_FLASH_ERASE_START
);
2711 /* vFlashErase:addr,length messages require region start and
2712 * end to be "block" aligned ... if padding is ever needed,
2713 * GDB will have become dangerously confused.
2715 result
= flash_erase_address_range(target
, false, addr
,
2718 /* perform any target specific operations after the erase */
2719 target_call_event_callbacks(target
,
2720 TARGET_EVENT_GDB_FLASH_ERASE_END
);
2723 if (result
!= ERROR_OK
) {
2724 /* GDB doesn't evaluate the actual error number returned,
2725 * treat a failed erase as an I/O error
2727 gdb_send_error(connection
, EIO
);
2728 LOG_ERROR("flash_erase returned %i", result
);
2730 gdb_put_packet(connection
, "OK", 2);
2735 if (strncmp(packet
, "vFlashWrite:", 12) == 0) {
2738 unsigned long length
;
2739 char const *parse
= packet
+ 12;
2741 if (*parse
== '\0') {
2742 LOG_ERROR("incomplete vFlashErase packet received, dropping connection");
2743 return ERROR_SERVER_REMOTE_CLOSED
;
2745 addr
= strtoul(parse
, (char **)&parse
, 16);
2746 if (*(parse
++) != ':') {
2747 LOG_ERROR("incomplete vFlashErase packet received, dropping connection");
2748 return ERROR_SERVER_REMOTE_CLOSED
;
2750 length
= packet_size
- (parse
- packet
);
2752 /* create a new image if there isn't already one */
2753 if (gdb_connection
->vflash_image
== NULL
) {
2754 gdb_connection
->vflash_image
= malloc(sizeof(struct image
));
2755 image_open(gdb_connection
->vflash_image
, "", "build");
2758 /* create new section with content from packet buffer */
2759 retval
= image_add_section(gdb_connection
->vflash_image
,
2760 addr
, length
, 0x0, (uint8_t const *)parse
);
2761 if (retval
!= ERROR_OK
)
2764 gdb_put_packet(connection
, "OK", 2);
2769 if (strncmp(packet
, "vFlashDone", 10) == 0) {
2772 /* process the flashing buffer. No need to erase as GDB
2773 * always issues a vFlashErase first. */
2774 target_call_event_callbacks(target
,
2775 TARGET_EVENT_GDB_FLASH_WRITE_START
);
2776 result
= flash_write(target
, gdb_connection
->vflash_image
,
2778 target_call_event_callbacks(target
,
2779 TARGET_EVENT_GDB_FLASH_WRITE_END
);
2780 if (result
!= ERROR_OK
) {
2781 if (result
== ERROR_FLASH_DST_OUT_OF_BANK
)
2782 gdb_put_packet(connection
, "E.memtype", 9);
2784 gdb_send_error(connection
, EIO
);
2786 LOG_DEBUG("wrote %u bytes from vFlash image to flash", (unsigned)written
);
2787 gdb_put_packet(connection
, "OK", 2);
2790 image_close(gdb_connection
->vflash_image
);
2791 free(gdb_connection
->vflash_image
);
2792 gdb_connection
->vflash_image
= NULL
;
2797 gdb_put_packet(connection
, "", 0);
2801 static int gdb_detach(struct connection
*connection
)
2803 target_call_event_callbacks(get_target_from_connection(connection
),
2804 TARGET_EVENT_GDB_DETACH
);
2806 return gdb_put_packet(connection
, "OK", 2);
2809 /* The format of 'F' response packet is
2810 * Fretcode,errno,Ctrl-C flag;call-specific attachment
2812 static int gdb_fileio_response_packet(struct connection
*connection
,
2813 char const *packet
, int packet_size
)
2815 struct target
*target
= get_target_from_connection(connection
);
2817 char *parsing_point
;
2818 int fileio_retcode
= strtoul(packet
+ 1, &separator
, 16);
2819 int fileio_errno
= 0;
2820 bool fileio_ctrl_c
= false;
2825 if (*separator
== ',') {
2826 parsing_point
= separator
+ 1;
2827 fileio_errno
= strtoul(parsing_point
, &separator
, 16);
2828 if (*separator
== ',') {
2829 if (*(separator
+ 1) == 'C') {
2830 /* TODO: process ctrl-c */
2831 fileio_ctrl_c
= true;
2836 LOG_DEBUG("File-I/O response, retcode: 0x%x, errno: 0x%x, ctrl-c: %s",
2837 fileio_retcode
, fileio_errno
, fileio_ctrl_c
? "true" : "false");
2839 retval
= target_gdb_fileio_end(target
, fileio_retcode
, fileio_errno
, fileio_ctrl_c
);
2840 if (retval
!= ERROR_OK
)
2843 /* After File-I/O ends, keep continue or step */
2844 if (gdb_running_type
== 'c')
2845 retval
= target_resume(target
, 1, 0x0, 0, 0);
2846 else if (gdb_running_type
== 's')
2847 retval
= target_step(target
, 1, 0x0, 0);
2849 retval
= ERROR_FAIL
;
2851 if (retval
!= ERROR_OK
)
2857 static void gdb_log_callback(void *priv
, const char *file
, unsigned line
,
2858 const char *function
, const char *string
)
2860 struct connection
*connection
= priv
;
2861 struct gdb_connection
*gdb_con
= connection
->priv
;
2863 if (gdb_con
->busy
) {
2864 /* do not reply this using the O packet */
2868 gdb_output_con(connection
, string
);
2871 static void gdb_sig_halted(struct connection
*connection
)
2874 snprintf(sig_reply
, 4, "T%2.2x", 2);
2875 gdb_put_packet(connection
, sig_reply
, 3);
2878 static int gdb_input_inner(struct connection
*connection
)
2880 /* Do not allocate this on the stack */
2881 static char gdb_packet_buffer
[GDB_BUFFER_SIZE
];
2883 struct target
*target
;
2884 char const *packet
= gdb_packet_buffer
;
2887 struct gdb_connection
*gdb_con
= connection
->priv
;
2888 static int extended_protocol
;
2890 target
= get_target_from_connection(connection
);
2892 /* drain input buffer. If one of the packets fail, then an error
2893 * packet is replied, if applicable.
2895 * This loop will terminate and the error code is returned.
2897 * The calling fn will check if this error is something that
2898 * can be recovered from, or if the connection must be closed.
2900 * If the error is recoverable, this fn is called again to
2901 * drain the rest of the buffer.
2904 packet_size
= GDB_BUFFER_SIZE
-1;
2905 retval
= gdb_get_packet(connection
, gdb_packet_buffer
, &packet_size
);
2906 if (retval
!= ERROR_OK
)
2909 /* terminate with zero */
2910 gdb_packet_buffer
[packet_size
] = '\0';
2912 if (LOG_LEVEL_IS(LOG_LVL_DEBUG
)) {
2913 if (packet
[0] == 'X') {
2914 /* binary packets spew junk into the debug log stream */
2917 for (x
= 0; (x
< 49) && (packet
[x
] != ':'); x
++)
2920 LOG_DEBUG("received packet: '%s:<binary-data>'", buf
);
2922 LOG_DEBUG("received packet: '%s'", packet
);
2925 if (packet_size
> 0) {
2927 switch (packet
[0]) {
2928 case 'T': /* Is thread alive? */
2929 gdb_thread_packet(connection
, packet
, packet_size
);
2931 case 'H': /* Set current thread ( 'c' for step and continue,
2932 * 'g' for all other operations ) */
2933 gdb_thread_packet(connection
, packet
, packet_size
);
2937 retval
= gdb_thread_packet(connection
, packet
, packet_size
);
2938 if (retval
== GDB_THREAD_PACKET_NOT_CONSUMED
)
2939 retval
= gdb_query_packet(connection
, packet
, packet_size
);
2942 retval
= gdb_get_registers_packet(connection
, packet
, packet_size
);
2945 retval
= gdb_set_registers_packet(connection
, packet
, packet_size
);
2948 retval
= gdb_get_register_packet(connection
, packet
, packet_size
);
2951 retval
= gdb_set_register_packet(connection
, packet
, packet_size
);
2954 retval
= gdb_read_memory_packet(connection
, packet
, packet_size
);
2957 retval
= gdb_write_memory_packet(connection
, packet
, packet_size
);
2961 retval
= gdb_breakpoint_watchpoint_packet(connection
, packet
, packet_size
);
2964 gdb_last_signal_packet(connection
, packet
, packet_size
);
2969 gdb_thread_packet(connection
, packet
, packet_size
);
2970 log_add_callback(gdb_log_callback
, connection
);
2972 if (gdb_con
->mem_write_error
) {
2973 LOG_ERROR("Memory write failure!");
2975 /* now that we have reported the memory write error,
2976 * we can clear the condition */
2977 gdb_con
->mem_write_error
= false;
2980 bool nostep
= false;
2981 bool already_running
= false;
2982 if (target
->state
== TARGET_RUNNING
) {
2983 LOG_WARNING("WARNING! The target is already running. "
2984 "All changes GDB did to registers will be discarded! "
2985 "Waiting for target to halt.");
2986 already_running
= true;
2987 } else if (target
->state
!= TARGET_HALTED
) {
2988 LOG_WARNING("The target is not in the halted nor running stated, " \
2989 "stepi/continue ignored.");
2991 } else if ((packet
[0] == 's') && gdb_con
->sync
) {
2992 /* Hmm..... when you issue a continue in GDB, then a "stepi" is
2993 * sent by GDB first to OpenOCD, thus defeating the check to
2994 * make only the single stepping have the sync feature...
2997 LOG_WARNING("stepi ignored. GDB will now fetch the register state " \
2998 "from the target.");
3000 gdb_con
->sync
= false;
3002 if (!already_running
&& nostep
) {
3003 /* Either the target isn't in the halted state, then we can't
3004 * step/continue. This might be early setup, etc.
3006 * Or we want to allow GDB to pick up a fresh set of
3007 * register values without modifying the target state.
3010 gdb_sig_halted(connection
);
3012 /* stop forwarding log packets! */
3013 log_remove_callback(gdb_log_callback
, connection
);
3015 /* We're running/stepping, in which case we can
3016 * forward log output until the target is halted
3018 gdb_con
->frontend_state
= TARGET_RUNNING
;
3019 target_call_event_callbacks(target
, TARGET_EVENT_GDB_START
);
3021 if (!already_running
) {
3022 /* Here we don't want packet processing to stop even if this fails,
3023 * so we use a local variable instead of retval. */
3024 retval
= gdb_step_continue_packet(connection
, packet
, packet_size
);
3025 if (retval
!= ERROR_OK
) {
3026 /* we'll never receive a halted
3027 * condition... issue a false one..
3029 gdb_frontend_halted(target
, connection
);
3036 retval
= gdb_v_packet(connection
, packet
, packet_size
);
3039 retval
= gdb_detach(connection
);
3040 extended_protocol
= 0;
3043 retval
= gdb_write_memory_binary_packet(connection
, packet
, packet_size
);
3044 if (retval
!= ERROR_OK
)
3048 if (extended_protocol
!= 0) {
3049 gdb_con
->attached
= false;
3052 gdb_put_packet(connection
, "OK", 2);
3053 return ERROR_SERVER_REMOTE_CLOSED
;
3055 /* handle extended remote protocol */
3056 extended_protocol
= 1;
3057 gdb_put_packet(connection
, "OK", 2);
3060 /* handle extended restart packet */
3061 breakpoint_clear_target(target
);
3062 watchpoint_clear_target(target
);
3063 command_run_linef(connection
->cmd_ctx
, "ocd_gdb_restart %s",
3064 target_name(target
));
3065 /* set connection as attached after reset */
3066 gdb_con
->attached
= true;
3067 /* info rtos parts */
3068 gdb_thread_packet(connection
, packet
, packet_size
);
3072 /* packet supported only by smp target i.e cortex_a.c*/
3073 /* handle smp packet replying coreid played to gbd */
3074 gdb_read_smp_packet(connection
, packet
, packet_size
);
3078 /* packet supported only by smp target i.e cortex_a.c */
3079 /* handle smp packet setting coreid to be played at next
3081 gdb_write_smp_packet(connection
, packet
, packet_size
);
3085 /* File-I/O extension */
3086 /* After gdb uses host-side syscall to complete target file
3087 * I/O, gdb sends host-side syscall return value to target
3089 * The format of 'F' response packet is
3090 * Fretcode,errno,Ctrl-C flag;call-specific attachment
3092 gdb_con
->frontend_state
= TARGET_RUNNING
;
3093 log_add_callback(gdb_log_callback
, connection
);
3094 gdb_fileio_response_packet(connection
, packet
, packet_size
);
3098 /* ignore unknown packets */
3099 LOG_DEBUG("ignoring 0x%2.2x packet", packet
[0]);
3100 gdb_put_packet(connection
, NULL
, 0);
3104 /* if a packet handler returned an error, exit input loop */
3105 if (retval
!= ERROR_OK
)
3109 if (gdb_con
->ctrl_c
) {
3110 if (target
->state
== TARGET_RUNNING
) {
3111 retval
= target_halt(target
);
3112 if (retval
!= ERROR_OK
)
3113 target_call_event_callbacks(target
, TARGET_EVENT_GDB_HALT
);
3114 gdb_con
->ctrl_c
= 0;
3116 LOG_INFO("The target is not running when halt was requested, stopping GDB.");
3117 target_call_event_callbacks(target
, TARGET_EVENT_GDB_HALT
);
3121 } while (gdb_con
->buf_cnt
> 0);
3126 static int gdb_input(struct connection
*connection
)
3128 int retval
= gdb_input_inner(connection
);
3129 struct gdb_connection
*gdb_con
= connection
->priv
;
3130 if (retval
== ERROR_SERVER_REMOTE_CLOSED
)
3133 /* logging does not propagate the error, yet can set the gdb_con->closed flag */
3134 if (gdb_con
->closed
)
3135 return ERROR_SERVER_REMOTE_CLOSED
;
3137 /* we'll recover from any other errors(e.g. temporary timeouts, etc.) */
3141 static int gdb_target_start(struct target
*target
, const char *port
)
3143 struct gdb_service
*gdb_service
;
3145 gdb_service
= malloc(sizeof(struct gdb_service
));
3147 if (NULL
== gdb_service
)
3150 gdb_service
->target
= target
;
3151 gdb_service
->core
[0] = -1;
3152 gdb_service
->core
[1] = -1;
3153 target
->gdb_service
= gdb_service
;
3155 ret
= add_service("gdb",
3156 port
, 1, &gdb_new_connection
, &gdb_input
,
3157 &gdb_connection_closed
, gdb_service
);
3158 /* initialialize all targets gdb service with the same pointer */
3160 struct target_list
*head
;
3161 struct target
*curr
;
3162 head
= target
->head
;
3163 while (head
!= (struct target_list
*)NULL
) {
3164 curr
= head
->target
;
3166 curr
->gdb_service
= gdb_service
;
3173 static int gdb_target_add_one(struct target
*target
)
3175 if (strcmp(gdb_port
, "disabled") == 0) {
3176 LOG_INFO("gdb port disabled");
3180 /* one gdb instance per smp list */
3181 if ((target
->smp
) && (target
->gdb_service
))
3183 int retval
= gdb_target_start(target
, gdb_port_next
);
3184 if (retval
== ERROR_OK
) {
3186 /* If we can parse the port number
3187 * then we increment the port number for the next target.
3190 portnumber
= strtol(gdb_port_next
, &end
, 0);
3192 if (parse_long(gdb_port_next
, &portnumber
) == ERROR_OK
) {
3193 free(gdb_port_next
);
3195 gdb_port_next
= alloc_printf("%d", portnumber
+1);
3197 /* Don't increment if gdb_port is 0, since we're just
3198 * trying to allocate an unused port. */
3199 gdb_port_next
= strdup("0");
3207 int gdb_target_add_all(struct target
*target
)
3209 if (strcmp(gdb_port
, "disabled") == 0) {
3210 LOG_INFO("gdb server disabled");
3214 if (NULL
== target
) {
3215 LOG_WARNING("gdb services need one or more targets defined");
3219 while (NULL
!= target
) {
3220 int retval
= gdb_target_add_one(target
);
3221 if (ERROR_OK
!= retval
)
3224 target
= target
->next
;
3230 COMMAND_HANDLER(handle_gdb_sync_command
)
3233 return ERROR_COMMAND_SYNTAX_ERROR
;
3235 if (current_gdb_connection
== NULL
) {
3236 command_print(CMD_CTX
,
3237 "gdb_sync command can only be run from within gdb using \"monitor gdb_sync\"");
3241 current_gdb_connection
->sync
= true;
3246 /* daemon configuration command gdb_port */
3247 COMMAND_HANDLER(handle_gdb_port_command
)
3249 int retval
= CALL_COMMAND_HANDLER(server_pipe_command
, &gdb_port
);
3250 if (ERROR_OK
== retval
) {
3251 free(gdb_port_next
);
3252 gdb_port_next
= strdup(gdb_port
);
3257 COMMAND_HANDLER(handle_gdb_memory_map_command
)
3260 return ERROR_COMMAND_SYNTAX_ERROR
;
3262 COMMAND_PARSE_ENABLE(CMD_ARGV
[0], gdb_use_memory_map
);
3266 COMMAND_HANDLER(handle_gdb_flash_program_command
)
3269 return ERROR_COMMAND_SYNTAX_ERROR
;
3271 COMMAND_PARSE_ENABLE(CMD_ARGV
[0], gdb_flash_program
);
3275 COMMAND_HANDLER(handle_gdb_report_data_abort_command
)
3278 return ERROR_COMMAND_SYNTAX_ERROR
;
3280 COMMAND_PARSE_ENABLE(CMD_ARGV
[0], gdb_report_data_abort
);
3284 /* gdb_breakpoint_override */
3285 COMMAND_HANDLER(handle_gdb_breakpoint_override_command
)
3287 if (CMD_ARGC
== 0) {
3289 } else if (CMD_ARGC
== 1) {
3290 gdb_breakpoint_override
= 1;
3291 if (strcmp(CMD_ARGV
[0], "hard") == 0)
3292 gdb_breakpoint_override_type
= BKPT_HARD
;
3293 else if (strcmp(CMD_ARGV
[0], "soft") == 0)
3294 gdb_breakpoint_override_type
= BKPT_SOFT
;
3295 else if (strcmp(CMD_ARGV
[0], "disable") == 0)
3296 gdb_breakpoint_override
= 0;
3298 return ERROR_COMMAND_SYNTAX_ERROR
;
3299 if (gdb_breakpoint_override
)
3300 LOG_USER("force %s breakpoints",
3301 (gdb_breakpoint_override_type
== BKPT_HARD
) ? "hard" : "soft");
3303 LOG_USER("breakpoint type is not overridden");
3308 COMMAND_HANDLER(handle_gdb_target_description_command
)
3311 return ERROR_COMMAND_SYNTAX_ERROR
;
3313 COMMAND_PARSE_ENABLE(CMD_ARGV
[0], gdb_use_target_description
);
3317 COMMAND_HANDLER(handle_gdb_save_tdesc_command
)
3320 uint32_t tdesc_length
;
3321 struct target
*target
= get_current_target(CMD_CTX
);
3323 int retval
= gdb_generate_target_description(target
, &tdesc
);
3324 if (retval
!= ERROR_OK
) {
3325 LOG_ERROR("Unable to Generate Target Description");
3329 tdesc_length
= strlen(tdesc
);
3331 struct fileio
*fileio
;
3332 size_t size_written
;
3334 char *tdesc_filename
= alloc_printf("%s.xml", target_type_name(target
));
3335 if (tdesc_filename
== NULL
) {
3336 retval
= ERROR_FAIL
;
3340 retval
= fileio_open(&fileio
, tdesc_filename
, FILEIO_WRITE
, FILEIO_TEXT
);
3342 if (retval
!= ERROR_OK
) {
3343 LOG_ERROR("Can't open %s for writing", tdesc_filename
);
3347 retval
= fileio_write(fileio
, tdesc_length
, tdesc
, &size_written
);
3349 fileio_close(fileio
);
3351 if (retval
!= ERROR_OK
)
3352 LOG_ERROR("Error while writing the tdesc file");
3355 free(tdesc_filename
);
3361 static const struct command_registration gdb_command_handlers
[] = {
3364 .handler
= handle_gdb_sync_command
,
3365 .mode
= COMMAND_ANY
,
3366 .help
= "next stepi will return immediately allowing "
3367 "GDB to fetch register state without affecting "
3373 .handler
= handle_gdb_port_command
,
3374 .mode
= COMMAND_ANY
,
3375 .help
= "Normally gdb listens to a TCP/IP port. Each subsequent GDB "
3376 "server listens for the next port number after the "
3377 "base port number specified. "
3378 "No arguments reports GDB port. \"pipe\" means listen to stdin "
3379 "output to stdout, an integer is base port number, \"disabled\" disables "
3380 "port. Any other string is are interpreted as named pipe to listen to. "
3381 "Output pipe is the same name as input pipe, but with 'o' appended.",
3382 .usage
= "[port_num]",
3385 .name
= "gdb_memory_map",
3386 .handler
= handle_gdb_memory_map_command
,
3387 .mode
= COMMAND_CONFIG
,
3388 .help
= "enable or disable memory map",
3389 .usage
= "('enable'|'disable')"
3392 .name
= "gdb_flash_program",
3393 .handler
= handle_gdb_flash_program_command
,
3394 .mode
= COMMAND_CONFIG
,
3395 .help
= "enable or disable flash program",
3396 .usage
= "('enable'|'disable')"
3399 .name
= "gdb_report_data_abort",
3400 .handler
= handle_gdb_report_data_abort_command
,
3401 .mode
= COMMAND_CONFIG
,
3402 .help
= "enable or disable reporting data aborts",
3403 .usage
= "('enable'|'disable')"
3406 .name
= "gdb_breakpoint_override",
3407 .handler
= handle_gdb_breakpoint_override_command
,
3408 .mode
= COMMAND_ANY
,
3409 .help
= "Display or specify type of breakpoint "
3410 "to be used by gdb 'break' commands.",
3411 .usage
= "('hard'|'soft'|'disable')"
3414 .name
= "gdb_target_description",
3415 .handler
= handle_gdb_target_description_command
,
3416 .mode
= COMMAND_CONFIG
,
3417 .help
= "enable or disable target description",
3418 .usage
= "('enable'|'disable')"
3421 .name
= "gdb_save_tdesc",
3422 .handler
= handle_gdb_save_tdesc_command
,
3423 .mode
= COMMAND_EXEC
,
3424 .help
= "Save the target description file",
3426 COMMAND_REGISTRATION_DONE
3429 int gdb_register_commands(struct command_context
*cmd_ctx
)
3431 gdb_port
= strdup("3333");
3432 gdb_port_next
= strdup("3333");
3433 return register_commands(cmd_ctx
, NULL
, gdb_command_handlers
);