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>
46 #include <target/semihosting_common.h>
48 #include <flash/nor/core.h>
49 #include "gdb_server.h"
50 #include <target/image.h>
51 #include <jtag/jtag.h>
52 #include "rtos/rtos.h"
53 #include "target/smp.h"
57 * GDB server implementation.
59 * This implements the GDB Remote Serial Protocol, over TCP connections,
60 * giving GDB access to the JTAG or other hardware debugging facilities
61 * found in most modern embedded processors.
64 enum gdb_output_flag
{
65 /* GDB doesn't accept 'O' packets */
67 /* GDB accepts 'O' packets */
71 struct target_desc_format
{
73 uint32_t tdesc_length
;
76 /* private connection data for GDB */
77 struct gdb_connection
{
78 char buffer
[GDB_BUFFER_SIZE
+ 1]; /* Extra byte for null-termination */
82 enum target_state frontend_state
;
83 struct image
*vflash_image
;
87 /* set flag to true if you want the next stepi to return immediately.
88 * allowing GDB to pick up a fresh set of register values from the target
89 * without modifying the target state. */
91 /* We delay reporting memory write errors until next step/continue or memory
92 * write. This improves performance of gdb load significantly as the GDB packet
93 * can be replied immediately and a new GDB packet will be ready without delay
94 * (ca. 10% or so...). */
96 /* with extended-remote it seems we need to better emulate attach/detach.
97 * what this means is we reply with a W stop reply after a kill packet,
98 * normally we reply with a S reply via gdb_last_signal_packet.
99 * as a side note this behaviour only effects gdb > 6.8 */
101 /* set when extended protocol is used */
102 bool extended_protocol
;
103 /* temporarily used for target description support */
104 struct target_desc_format target_desc
;
105 /* temporarily used for thread list support */
107 /* flag to mask the output from gdb_log_callback() */
108 enum gdb_output_flag output_flag
;
112 #define _DEBUG_GDB_IO_
115 static struct gdb_connection
*current_gdb_connection
;
117 static int gdb_breakpoint_override
;
118 static enum breakpoint_type gdb_breakpoint_override_type
;
120 static int gdb_error(struct connection
*connection
, int retval
);
121 static char *gdb_port
;
122 static char *gdb_port_next
;
124 static void gdb_log_callback(void *priv
, const char *file
, unsigned line
,
125 const char *function
, const char *string
);
127 static void gdb_sig_halted(struct connection
*connection
);
129 /* number of gdb connections, mainly to suppress gdb related debugging spam
130 * in helper/log.c when no gdb connections are actually active */
131 int gdb_actual_connections
;
133 /* set if we are sending a memory map to gdb
134 * via qXfer:memory-map:read packet */
135 /* enabled by default*/
136 static int gdb_use_memory_map
= 1;
137 /* enabled by default*/
138 static int gdb_flash_program
= 1;
140 /* if set, data aborts cause an error to be reported in memory read packets
141 * see the code in gdb_read_memory_packet() for further explanations.
142 * Disabled by default.
144 static int gdb_report_data_abort
;
145 /* If set, errors when accessing registers are reported to gdb. Disabled by
147 static int gdb_report_register_access_error
;
149 /* set if we are sending target descriptions to gdb
150 * via qXfer:features:read packet */
151 /* enabled by default */
152 static int gdb_use_target_description
= 1;
154 /* current processing free-run type, used by file-I/O */
155 static char gdb_running_type
;
157 static int gdb_last_signal(struct target
*target
)
159 switch (target
->debug_reason
) {
160 case DBG_REASON_DBGRQ
:
161 return 0x2; /* SIGINT */
162 case DBG_REASON_BREAKPOINT
:
163 case DBG_REASON_WATCHPOINT
:
164 case DBG_REASON_WPTANDBKPT
:
165 return 0x05; /* SIGTRAP */
166 case DBG_REASON_SINGLESTEP
:
167 return 0x05; /* SIGTRAP */
168 case DBG_REASON_EXC_CATCH
:
170 case DBG_REASON_NOTHALTED
:
171 return 0x0; /* no signal... shouldn't happen */
173 LOG_USER("undefined debug reason %d - target needs reset",
174 target
->debug_reason
);
179 static int check_pending(struct connection
*connection
,
180 int timeout_s
, int *got_data
)
182 /* a non-blocking socket will block if there is 0 bytes available on the socket,
183 * but return with as many bytes as are available immediately
187 struct gdb_connection
*gdb_con
= connection
->priv
;
193 if (gdb_con
->buf_cnt
> 0) {
199 FD_SET(connection
->fd
, &read_fds
);
201 tv
.tv_sec
= timeout_s
;
203 if (socket_select(connection
->fd
+ 1, &read_fds
, NULL
, NULL
, &tv
) == 0) {
204 /* This can typically be because a "monitor" command took too long
205 * before printing any progress messages
208 return ERROR_GDB_TIMEOUT
;
212 *got_data
= FD_ISSET(connection
->fd
, &read_fds
) != 0;
216 static int gdb_get_char_inner(struct connection
*connection
, int *next_char
)
218 struct gdb_connection
*gdb_con
= connection
->priv
;
219 int retval
= ERROR_OK
;
221 #ifdef _DEBUG_GDB_IO_
225 if (connection
->service
->type
!= CONNECTION_TCP
)
226 gdb_con
->buf_cnt
= read(connection
->fd
, gdb_con
->buffer
, GDB_BUFFER_SIZE
);
228 retval
= check_pending(connection
, 1, NULL
);
229 if (retval
!= ERROR_OK
)
231 gdb_con
->buf_cnt
= read_socket(connection
->fd
,
236 if (gdb_con
->buf_cnt
> 0)
238 if (gdb_con
->buf_cnt
== 0) {
239 LOG_DEBUG("GDB connection closed by the remote client");
240 gdb_con
->closed
= true;
241 return ERROR_SERVER_REMOTE_CLOSED
;
245 errno
= WSAGetLastError();
251 case WSAECONNABORTED
:
252 gdb_con
->closed
= true;
253 return ERROR_SERVER_REMOTE_CLOSED
;
255 gdb_con
->closed
= true;
256 return ERROR_SERVER_REMOTE_CLOSED
;
258 LOG_ERROR("read: %d", errno
);
267 gdb_con
->closed
= true;
268 return ERROR_SERVER_REMOTE_CLOSED
;
270 gdb_con
->closed
= true;
271 return ERROR_SERVER_REMOTE_CLOSED
;
273 LOG_ERROR("read: %s", strerror(errno
));
274 gdb_con
->closed
= true;
275 return ERROR_SERVER_REMOTE_CLOSED
;
280 #ifdef _DEBUG_GDB_IO_
281 debug_buffer
= strndup(gdb_con
->buffer
, gdb_con
->buf_cnt
);
282 LOG_DEBUG("received '%s'", debug_buffer
);
286 gdb_con
->buf_p
= gdb_con
->buffer
;
288 *next_char
= *(gdb_con
->buf_p
++);
289 if (gdb_con
->buf_cnt
> 0)
290 connection
->input_pending
= true;
292 connection
->input_pending
= false;
293 #ifdef _DEBUG_GDB_IO_
294 LOG_DEBUG("returned char '%c' (0x%2.2x)", *next_char
, *next_char
);
301 * The cool thing about this fn is that it allows buf_p and buf_cnt to be
302 * held in registers in the inner loop.
304 * For small caches and embedded systems this is important!
306 static inline int gdb_get_char_fast(struct connection
*connection
,
307 int *next_char
, char **buf_p
, int *buf_cnt
)
309 int retval
= ERROR_OK
;
311 if ((*buf_cnt
)-- > 0) {
312 *next_char
= **buf_p
;
315 connection
->input_pending
= true;
317 connection
->input_pending
= false;
319 #ifdef _DEBUG_GDB_IO_
320 LOG_DEBUG("returned char '%c' (0x%2.2x)", *next_char
, *next_char
);
326 struct gdb_connection
*gdb_con
= connection
->priv
;
327 gdb_con
->buf_p
= *buf_p
;
328 gdb_con
->buf_cnt
= *buf_cnt
;
329 retval
= gdb_get_char_inner(connection
, next_char
);
330 *buf_p
= gdb_con
->buf_p
;
331 *buf_cnt
= gdb_con
->buf_cnt
;
336 static int gdb_get_char(struct connection
*connection
, int *next_char
)
338 struct gdb_connection
*gdb_con
= connection
->priv
;
339 return gdb_get_char_fast(connection
, next_char
, &gdb_con
->buf_p
, &gdb_con
->buf_cnt
);
342 static int gdb_putback_char(struct connection
*connection
, int last_char
)
344 struct gdb_connection
*gdb_con
= connection
->priv
;
346 if (gdb_con
->buf_p
> gdb_con
->buffer
) {
347 *(--gdb_con
->buf_p
) = last_char
;
350 LOG_ERROR("BUG: couldn't put character back");
355 /* The only way we can detect that the socket is closed is the first time
356 * we write to it, we will fail. Subsequent write operations will
357 * succeed. Shudder! */
358 static int gdb_write(struct connection
*connection
, void *data
, int len
)
360 struct gdb_connection
*gdb_con
= connection
->priv
;
361 if (gdb_con
->closed
) {
362 LOG_DEBUG("GDB socket marked as closed, cannot write to it.");
363 return ERROR_SERVER_REMOTE_CLOSED
;
366 if (connection_write(connection
, data
, len
) == len
)
369 LOG_WARNING("Error writing to GDB socket. Dropping the connection.");
370 gdb_con
->closed
= true;
371 return ERROR_SERVER_REMOTE_CLOSED
;
374 static void gdb_log_incoming_packet(char *packet
)
376 if (!LOG_LEVEL_IS(LOG_LVL_DEBUG
))
379 /* Avoid dumping non-printable characters to the terminal */
380 const unsigned packet_len
= strlen(packet
);
381 const char *nonprint
= find_nonprint_char(packet
, packet_len
);
383 /* Does packet at least have a prefix that is printable?
384 * Look within the first 50 chars of the packet. */
385 const char *colon
= memchr(packet
, ':', MIN(50, packet_len
));
386 const bool packet_has_prefix
= (colon
);
387 const bool packet_prefix_printable
= (packet_has_prefix
&& nonprint
> colon
);
389 if (packet_prefix_printable
) {
390 const unsigned int prefix_len
= colon
- packet
+ 1; /* + 1 to include the ':' */
391 const unsigned int payload_len
= packet_len
- prefix_len
;
392 LOG_DEBUG("received packet: %.*s<binary-data-%u-bytes>", prefix_len
, packet
, payload_len
);
394 LOG_DEBUG("received packet: <binary-data-%u-bytes>", packet_len
);
397 /* All chars printable, dump the packet as is */
398 LOG_DEBUG("received packet: %s", packet
);
402 static void gdb_log_outgoing_packet(char *packet_buf
, unsigned int packet_len
, unsigned char checksum
)
404 if (!LOG_LEVEL_IS(LOG_LVL_DEBUG
))
407 if (find_nonprint_char(packet_buf
, packet_len
))
408 LOG_DEBUG("sending packet: $<binary-data-%u-bytes>#%2.2x", packet_len
, checksum
);
410 LOG_DEBUG("sending packet: $%.*s#%2.2x'", packet_len
, packet_buf
, checksum
);
413 static int gdb_put_packet_inner(struct connection
*connection
,
414 char *buffer
, int len
)
417 unsigned char my_checksum
= 0;
420 struct gdb_connection
*gdb_con
= connection
->priv
;
422 for (i
= 0; i
< len
; i
++)
423 my_checksum
+= buffer
[i
];
425 #ifdef _DEBUG_GDB_IO_
427 * At this point we should have nothing in the input queue from GDB,
428 * however sometimes '-' is sent even though we've already received
429 * an ACK (+) for everything we've sent off.
433 retval
= check_pending(connection
, 0, &gotdata
);
434 if (retval
!= ERROR_OK
)
438 retval
= gdb_get_char(connection
, &reply
);
439 if (retval
!= ERROR_OK
)
442 /* fix a problem with some IAR tools */
443 gdb_putback_char(connection
, reply
);
444 LOG_DEBUG("Unexpected start of new packet");
448 LOG_WARNING("Discard unexpected char %c", reply
);
453 gdb_log_outgoing_packet(buffer
, len
, my_checksum
);
455 char local_buffer
[1024];
456 local_buffer
[0] = '$';
457 if ((size_t)len
+ 4 <= sizeof(local_buffer
)) {
458 /* performance gain on smaller packets by only a single call to gdb_write() */
459 memcpy(local_buffer
+ 1, buffer
, len
++);
460 len
+= snprintf(local_buffer
+ len
, sizeof(local_buffer
) - len
, "#%02x", my_checksum
);
461 retval
= gdb_write(connection
, local_buffer
, len
);
462 if (retval
!= ERROR_OK
)
465 /* larger packets are transmitted directly from caller supplied buffer
466 * by several calls to gdb_write() to avoid dynamic allocation */
467 snprintf(local_buffer
+ 1, sizeof(local_buffer
) - 1, "#%02x", my_checksum
);
468 retval
= gdb_write(connection
, local_buffer
, 1);
469 if (retval
!= ERROR_OK
)
471 retval
= gdb_write(connection
, buffer
, len
);
472 if (retval
!= ERROR_OK
)
474 retval
= gdb_write(connection
, local_buffer
+ 1, 3);
475 if (retval
!= ERROR_OK
)
479 if (gdb_con
->noack_mode
)
482 retval
= gdb_get_char(connection
, &reply
);
483 if (retval
!= ERROR_OK
)
488 else if (reply
== '-') {
489 /* Stop sending output packets for now */
490 gdb_con
->output_flag
= GDB_OUTPUT_NO
;
491 LOG_WARNING("negative reply, retrying");
492 } else if (reply
== 0x3) {
493 gdb_con
->ctrl_c
= true;
494 retval
= gdb_get_char(connection
, &reply
);
495 if (retval
!= ERROR_OK
)
499 else if (reply
== '-') {
500 /* Stop sending output packets for now */
501 gdb_con
->output_flag
= GDB_OUTPUT_NO
;
502 LOG_WARNING("negative reply, retrying");
503 } else if (reply
== '$') {
504 LOG_ERROR("GDB missing ack(1) - assumed good");
505 gdb_putback_char(connection
, reply
);
508 LOG_ERROR("unknown character(1) 0x%2.2x in reply, dropping connection", reply
);
509 gdb_con
->closed
= true;
510 return ERROR_SERVER_REMOTE_CLOSED
;
512 } else if (reply
== '$') {
513 LOG_ERROR("GDB missing ack(2) - assumed good");
514 gdb_putback_char(connection
, reply
);
517 LOG_ERROR("unknown character(2) 0x%2.2x in reply, dropping connection",
519 gdb_con
->closed
= true;
520 return ERROR_SERVER_REMOTE_CLOSED
;
524 return ERROR_SERVER_REMOTE_CLOSED
;
529 int gdb_put_packet(struct connection
*connection
, char *buffer
, int len
)
531 struct gdb_connection
*gdb_con
= connection
->priv
;
532 gdb_con
->busy
= true;
533 int retval
= gdb_put_packet_inner(connection
, buffer
, len
);
534 gdb_con
->busy
= false;
536 /* we sent some data, reset timer for keep alive messages */
542 static inline int fetch_packet(struct connection
*connection
,
543 int *checksum_ok
, int noack
, int *len
, char *buffer
)
545 unsigned char my_checksum
= 0;
548 int retval
= ERROR_OK
;
550 struct gdb_connection
*gdb_con
= connection
->priv
;
555 /* move this over into local variables to use registers and give the
556 * more freedom to optimize */
557 char *buf_p
= gdb_con
->buf_p
;
558 int buf_cnt
= gdb_con
->buf_cnt
;
561 /* The common case is that we have an entire packet with no escape chars.
562 * We need to leave at least 2 bytes in the buffer to have
563 * gdb_get_char() update various bits and bobs correctly.
565 if ((buf_cnt
> 2) && ((buf_cnt
+ count
) < *len
)) {
566 /* The compiler will struggle a bit with constant propagation and
567 * aliasing, so we help it by showing that these values do not
568 * change inside the loop
572 int run
= buf_cnt
- 2;
578 if (character
== '#') {
579 /* Danger! character can be '#' when esc is
580 * used so we need an explicit boolean for done here. */
585 if (character
== '}') {
586 /* data transmitted in binary mode (X packet)
587 * uses 0x7d as escape character */
588 my_checksum
+= character
& 0xff;
591 my_checksum
+= character
& 0xff;
592 buffer
[count
++] = (character
^ 0x20) & 0xff;
594 my_checksum
+= character
& 0xff;
595 buffer
[count
++] = character
& 0xff;
604 LOG_ERROR("packet buffer too small");
605 retval
= ERROR_GDB_BUFFER_TOO_SMALL
;
609 retval
= gdb_get_char_fast(connection
, &character
, &buf_p
, &buf_cnt
);
610 if (retval
!= ERROR_OK
)
613 if (character
== '#')
616 if (character
== '}') {
617 /* data transmitted in binary mode (X packet)
618 * uses 0x7d as escape character */
619 my_checksum
+= character
& 0xff;
621 retval
= gdb_get_char_fast(connection
, &character
, &buf_p
, &buf_cnt
);
622 if (retval
!= ERROR_OK
)
625 my_checksum
+= character
& 0xff;
626 buffer
[count
++] = (character
^ 0x20) & 0xff;
628 my_checksum
+= character
& 0xff;
629 buffer
[count
++] = character
& 0xff;
633 gdb_con
->buf_p
= buf_p
;
634 gdb_con
->buf_cnt
= buf_cnt
;
636 if (retval
!= ERROR_OK
)
641 retval
= gdb_get_char(connection
, &character
);
642 if (retval
!= ERROR_OK
)
644 checksum
[0] = character
;
645 retval
= gdb_get_char(connection
, &character
);
646 if (retval
!= ERROR_OK
)
648 checksum
[1] = character
;
652 *checksum_ok
= (my_checksum
== strtoul(checksum
, NULL
, 16));
657 static int gdb_get_packet_inner(struct connection
*connection
,
658 char *buffer
, int *len
)
662 struct gdb_connection
*gdb_con
= connection
->priv
;
666 retval
= gdb_get_char(connection
, &character
);
667 if (retval
!= ERROR_OK
)
670 #ifdef _DEBUG_GDB_IO_
671 LOG_DEBUG("character: '%c'", character
);
678 /* According to the GDB documentation
679 * (https://sourceware.org/gdb/onlinedocs/gdb/Packet-Acknowledgment.html):
680 * "gdb sends a final `+` acknowledgment of the stub's `OK`
681 * response, which can be safely ignored by the stub."
682 * However OpenOCD server already is in noack mode at this
683 * point and instead of ignoring this it was emitting a
684 * warning. This code makes server ignore the first ACK
685 * that will be received after going into noack mode,
686 * warning only about subsequent ACK's. */
687 if (gdb_con
->noack_mode
> 1) {
688 LOG_WARNING("acknowledgment received, but no packet pending");
689 } else if (gdb_con
->noack_mode
) {
690 LOG_DEBUG("Received first acknowledgment after entering noack mode. Ignoring it.");
691 gdb_con
->noack_mode
= 2;
695 LOG_WARNING("negative acknowledgment, but no packet pending");
698 gdb_con
->ctrl_c
= true;
702 LOG_WARNING("ignoring character 0x%x", character
);
705 } while (character
!= '$');
708 /* explicit code expansion here to get faster inlined code in -O3 by not
709 * calculating checksum */
710 if (gdb_con
->noack_mode
) {
711 retval
= fetch_packet(connection
, &checksum_ok
, 1, len
, buffer
);
712 if (retval
!= ERROR_OK
)
715 retval
= fetch_packet(connection
, &checksum_ok
, 0, len
, buffer
);
716 if (retval
!= ERROR_OK
)
720 if (gdb_con
->noack_mode
) {
721 /* checksum is not checked in noack mode */
725 retval
= gdb_write(connection
, "+", 1);
726 if (retval
!= ERROR_OK
)
732 return ERROR_SERVER_REMOTE_CLOSED
;
737 static int gdb_get_packet(struct connection
*connection
, char *buffer
, int *len
)
739 struct gdb_connection
*gdb_con
= connection
->priv
;
740 gdb_con
->busy
= true;
741 int retval
= gdb_get_packet_inner(connection
, buffer
, len
);
742 gdb_con
->busy
= false;
746 static int gdb_output_con(struct connection
*connection
, const char *line
)
751 bin_size
= strlen(line
);
753 hex_buffer
= malloc(bin_size
* 2 + 2);
755 return ERROR_GDB_BUFFER_TOO_SMALL
;
758 size_t pkt_len
= hexify(hex_buffer
+ 1, (const uint8_t *)line
, bin_size
,
760 int retval
= gdb_put_packet(connection
, hex_buffer
, pkt_len
+ 1);
766 static int gdb_output(struct command_context
*context
, const char *line
)
768 /* this will be dumped to the log and also sent as an O packet if possible */
769 LOG_USER_N("%s", line
);
773 static void gdb_signal_reply(struct target
*target
, struct connection
*connection
)
775 struct gdb_connection
*gdb_connection
= connection
->priv
;
777 char stop_reason
[32];
778 char current_thread
[25];
782 rtos_update_threads(target
);
784 if (target
->debug_reason
== DBG_REASON_EXIT
) {
785 sig_reply_len
= snprintf(sig_reply
, sizeof(sig_reply
), "W00");
789 target
->rtos
->current_threadid
= target
->rtos
->current_thread
;
790 target
->rtos
->gdb_target_for_threadid(connection
, target
->rtos
->current_threadid
, &ct
);
795 if (gdb_connection
->ctrl_c
) {
798 signal_var
= gdb_last_signal(ct
);
800 stop_reason
[0] = '\0';
801 if (ct
->debug_reason
== DBG_REASON_WATCHPOINT
) {
802 enum watchpoint_rw hit_wp_type
;
803 target_addr_t hit_wp_address
;
805 if (watchpoint_hit(ct
, &hit_wp_type
, &hit_wp_address
) == ERROR_OK
) {
807 switch (hit_wp_type
) {
809 snprintf(stop_reason
, sizeof(stop_reason
),
810 "watch:%08" TARGET_PRIxADDR
";", hit_wp_address
);
813 snprintf(stop_reason
, sizeof(stop_reason
),
814 "rwatch:%08" TARGET_PRIxADDR
";", hit_wp_address
);
817 snprintf(stop_reason
, sizeof(stop_reason
),
818 "awatch:%08" TARGET_PRIxADDR
";", hit_wp_address
);
826 current_thread
[0] = '\0';
828 snprintf(current_thread
, sizeof(current_thread
), "thread:%" PRIx64
";",
829 target
->rtos
->current_thread
);
831 sig_reply_len
= snprintf(sig_reply
, sizeof(sig_reply
), "T%2.2x%s%s",
832 signal_var
, stop_reason
, current_thread
);
834 gdb_connection
->ctrl_c
= false;
837 gdb_put_packet(connection
, sig_reply
, sig_reply_len
);
838 gdb_connection
->frontend_state
= TARGET_HALTED
;
841 static void gdb_fileio_reply(struct target
*target
, struct connection
*connection
)
843 struct gdb_connection
*gdb_connection
= connection
->priv
;
844 char fileio_command
[256];
846 bool program_exited
= false;
848 if (strcmp(target
->fileio_info
->identifier
, "open") == 0)
849 sprintf(fileio_command
, "F%s,%" PRIx64
"/%" PRIx64
",%" PRIx64
",%" PRIx64
, target
->fileio_info
->identifier
,
850 target
->fileio_info
->param_1
,
851 target
->fileio_info
->param_2
+ 1, /* len + trailing zero */
852 target
->fileio_info
->param_3
,
853 target
->fileio_info
->param_4
);
854 else if (strcmp(target
->fileio_info
->identifier
, "close") == 0)
855 sprintf(fileio_command
, "F%s,%" PRIx64
, target
->fileio_info
->identifier
,
856 target
->fileio_info
->param_1
);
857 else if (strcmp(target
->fileio_info
->identifier
, "read") == 0)
858 sprintf(fileio_command
, "F%s,%" PRIx64
",%" PRIx64
",%" PRIx64
, target
->fileio_info
->identifier
,
859 target
->fileio_info
->param_1
,
860 target
->fileio_info
->param_2
,
861 target
->fileio_info
->param_3
);
862 else if (strcmp(target
->fileio_info
->identifier
, "write") == 0)
863 sprintf(fileio_command
, "F%s,%" PRIx64
",%" PRIx64
",%" PRIx64
, target
->fileio_info
->identifier
,
864 target
->fileio_info
->param_1
,
865 target
->fileio_info
->param_2
,
866 target
->fileio_info
->param_3
);
867 else if (strcmp(target
->fileio_info
->identifier
, "lseek") == 0)
868 sprintf(fileio_command
, "F%s,%" PRIx64
",%" PRIx64
",%" PRIx64
, target
->fileio_info
->identifier
,
869 target
->fileio_info
->param_1
,
870 target
->fileio_info
->param_2
,
871 target
->fileio_info
->param_3
);
872 else if (strcmp(target
->fileio_info
->identifier
, "rename") == 0)
873 sprintf(fileio_command
, "F%s,%" PRIx64
"/%" PRIx64
",%" PRIx64
"/%" PRIx64
, target
->fileio_info
->identifier
,
874 target
->fileio_info
->param_1
,
875 target
->fileio_info
->param_2
+ 1, /* len + trailing zero */
876 target
->fileio_info
->param_3
,
877 target
->fileio_info
->param_4
+ 1); /* len + trailing zero */
878 else if (strcmp(target
->fileio_info
->identifier
, "unlink") == 0)
879 sprintf(fileio_command
, "F%s,%" PRIx64
"/%" PRIx64
, target
->fileio_info
->identifier
,
880 target
->fileio_info
->param_1
,
881 target
->fileio_info
->param_2
+ 1); /* len + trailing zero */
882 else if (strcmp(target
->fileio_info
->identifier
, "stat") == 0)
883 sprintf(fileio_command
, "F%s,%" PRIx64
"/%" PRIx64
",%" PRIx64
, target
->fileio_info
->identifier
,
884 target
->fileio_info
->param_1
,
885 target
->fileio_info
->param_2
,
886 target
->fileio_info
->param_3
);
887 else if (strcmp(target
->fileio_info
->identifier
, "fstat") == 0)
888 sprintf(fileio_command
, "F%s,%" PRIx64
",%" PRIx64
, target
->fileio_info
->identifier
,
889 target
->fileio_info
->param_1
,
890 target
->fileio_info
->param_2
);
891 else if (strcmp(target
->fileio_info
->identifier
, "gettimeofday") == 0)
892 sprintf(fileio_command
, "F%s,%" PRIx64
",%" PRIx64
, target
->fileio_info
->identifier
,
893 target
->fileio_info
->param_1
,
894 target
->fileio_info
->param_2
);
895 else if (strcmp(target
->fileio_info
->identifier
, "isatty") == 0)
896 sprintf(fileio_command
, "F%s,%" PRIx64
, target
->fileio_info
->identifier
,
897 target
->fileio_info
->param_1
);
898 else if (strcmp(target
->fileio_info
->identifier
, "system") == 0)
899 sprintf(fileio_command
, "F%s,%" PRIx64
"/%" PRIx64
, target
->fileio_info
->identifier
,
900 target
->fileio_info
->param_1
,
901 target
->fileio_info
->param_2
+ 1); /* len + trailing zero */
902 else if (strcmp(target
->fileio_info
->identifier
, "exit") == 0) {
903 /* If target hits exit syscall, report to GDB the program is terminated.
904 * In addition, let target run its own exit syscall handler. */
905 program_exited
= true;
906 sprintf(fileio_command
, "W%02" PRIx64
, target
->fileio_info
->param_1
);
908 LOG_DEBUG("Unknown syscall: %s", target
->fileio_info
->identifier
);
910 /* encounter unknown syscall, continue */
911 gdb_connection
->frontend_state
= TARGET_RUNNING
;
912 target_resume(target
, 1, 0x0, 0, 0);
916 command_len
= strlen(fileio_command
);
917 gdb_put_packet(connection
, fileio_command
, command_len
);
919 if (program_exited
) {
920 /* Use target_resume() to let target run its own exit syscall handler. */
921 gdb_connection
->frontend_state
= TARGET_RUNNING
;
922 target_resume(target
, 1, 0x0, 0, 0);
924 gdb_connection
->frontend_state
= TARGET_HALTED
;
925 rtos_update_threads(target
);
929 static void gdb_frontend_halted(struct target
*target
, struct connection
*connection
)
931 struct gdb_connection
*gdb_connection
= connection
->priv
;
933 /* In the GDB protocol when we are stepping or continuing execution,
934 * we have a lingering reply. Upon receiving a halted event
935 * when we have that lingering packet, we reply to the original
936 * step or continue packet.
938 * Executing monitor commands can bring the target in and
939 * out of the running state so we'll see lots of TARGET_EVENT_XXX
940 * that are to be ignored.
942 if (gdb_connection
->frontend_state
== TARGET_RUNNING
) {
943 /* stop forwarding log packets! */
944 gdb_connection
->output_flag
= GDB_OUTPUT_NO
;
946 /* check fileio first */
947 if (target_get_gdb_fileio_info(target
, target
->fileio_info
) == ERROR_OK
)
948 gdb_fileio_reply(target
, connection
);
950 gdb_signal_reply(target
, connection
);
954 static int gdb_target_callback_event_handler(struct target
*target
,
955 enum target_event event
, void *priv
)
957 struct connection
*connection
= priv
;
958 struct gdb_service
*gdb_service
= connection
->service
->priv
;
960 if (gdb_service
->target
!= target
)
964 case TARGET_EVENT_GDB_HALT
:
965 gdb_frontend_halted(target
, connection
);
967 case TARGET_EVENT_HALTED
:
968 target_call_event_callbacks(target
, TARGET_EVENT_GDB_END
);
977 static int gdb_new_connection(struct connection
*connection
)
979 struct gdb_connection
*gdb_connection
= malloc(sizeof(struct gdb_connection
));
980 struct target
*target
;
984 target
= get_target_from_connection(connection
);
985 connection
->priv
= gdb_connection
;
986 connection
->cmd_ctx
->current_target
= target
;
988 /* initialize gdb connection information */
989 gdb_connection
->buf_p
= gdb_connection
->buffer
;
990 gdb_connection
->buf_cnt
= 0;
991 gdb_connection
->ctrl_c
= false;
992 gdb_connection
->frontend_state
= TARGET_HALTED
;
993 gdb_connection
->vflash_image
= NULL
;
994 gdb_connection
->closed
= false;
995 gdb_connection
->busy
= false;
996 gdb_connection
->noack_mode
= 0;
997 gdb_connection
->sync
= false;
998 gdb_connection
->mem_write_error
= false;
999 gdb_connection
->attached
= true;
1000 gdb_connection
->extended_protocol
= false;
1001 gdb_connection
->target_desc
.tdesc
= NULL
;
1002 gdb_connection
->target_desc
.tdesc_length
= 0;
1003 gdb_connection
->thread_list
= NULL
;
1004 gdb_connection
->output_flag
= GDB_OUTPUT_NO
;
1006 /* send ACK to GDB for debug request */
1007 gdb_write(connection
, "+", 1);
1009 /* output goes through gdb connection */
1010 command_set_output_handler(connection
->cmd_ctx
, gdb_output
, connection
);
1012 /* we must remove all breakpoints registered to the target as a previous
1013 * GDB session could leave dangling breakpoints if e.g. communication
1016 breakpoint_clear_target(target
);
1017 watchpoint_clear_target(target
);
1019 /* Since version 3.95 (gdb-19990504), with the exclusion of 6.5~6.8, GDB
1020 * sends an ACK at connection with the following comment in its source code:
1021 * "Ack any packet which the remote side has already sent."
1022 * LLDB does the same since the first gdb-remote implementation.
1023 * Remove the initial ACK from the incoming buffer.
1025 retval
= gdb_get_char(connection
, &initial_ack
);
1026 if (retval
!= ERROR_OK
)
1029 if (initial_ack
!= '+')
1030 gdb_putback_char(connection
, initial_ack
);
1032 target_call_event_callbacks(target
, TARGET_EVENT_GDB_ATTACH
);
1035 /* clean previous rtos session if supported*/
1036 if (target
->rtos
->type
->clean
)
1037 target
->rtos
->type
->clean(target
);
1039 /* update threads */
1040 rtos_update_threads(target
);
1043 if (gdb_use_memory_map
) {
1044 /* Connect must fail if the memory map can't be set up correctly.
1046 * This will cause an auto_probe to be invoked, which is either
1047 * a no-op or it will fail when the target isn't ready(e.g. not halted).
1049 for (unsigned int i
= 0; i
< flash_get_bank_count(); i
++) {
1050 struct flash_bank
*p
;
1051 p
= get_flash_bank_by_num_noprobe(i
);
1052 if (p
->target
!= target
)
1054 retval
= get_flash_bank_by_num(i
, &p
);
1055 if (retval
!= ERROR_OK
) {
1056 LOG_ERROR("Connect failed. Consider setting up a gdb-attach event for the target "
1057 "to prepare target for GDB connect, or use 'gdb_memory_map disable'.");
1063 gdb_actual_connections
++;
1064 log_printf_lf(all_targets
->next
? LOG_LVL_INFO
: LOG_LVL_DEBUG
,
1065 __FILE__
, __LINE__
, __func__
,
1066 "New GDB Connection: %d, Target %s, state: %s",
1067 gdb_actual_connections
,
1068 target_name(target
),
1069 target_state_name(target
));
1071 if (!target_was_examined(target
)) {
1072 LOG_ERROR("Target %s not examined yet, refuse gdb connection %d!",
1073 target_name(target
), gdb_actual_connections
);
1074 gdb_actual_connections
--;
1075 return ERROR_TARGET_NOT_EXAMINED
;
1078 if (target
->state
!= TARGET_HALTED
)
1079 LOG_WARNING("GDB connection %d on target %s not halted",
1080 gdb_actual_connections
, target_name(target
));
1082 /* DANGER! If we fail subsequently, we must remove this handler,
1083 * otherwise we occasionally see crashes as the timer can invoke the
1086 * register callback to be informed about target events */
1087 target_register_event_callback(gdb_target_callback_event_handler
, connection
);
1089 log_add_callback(gdb_log_callback
, connection
);
1094 static int gdb_connection_closed(struct connection
*connection
)
1096 struct target
*target
;
1097 struct gdb_connection
*gdb_connection
= connection
->priv
;
1099 target
= get_target_from_connection(connection
);
1101 /* we're done forwarding messages. Tear down callback before
1102 * cleaning up connection.
1104 log_remove_callback(gdb_log_callback
, connection
);
1106 gdb_actual_connections
--;
1107 LOG_DEBUG("GDB Close, Target: %s, state: %s, gdb_actual_connections=%d",
1108 target_name(target
),
1109 target_state_name(target
),
1110 gdb_actual_connections
);
1112 /* see if an image built with vFlash commands is left */
1113 if (gdb_connection
->vflash_image
) {
1114 image_close(gdb_connection
->vflash_image
);
1115 free(gdb_connection
->vflash_image
);
1116 gdb_connection
->vflash_image
= NULL
;
1119 /* if this connection registered a debug-message receiver delete it */
1120 delete_debug_msg_receiver(connection
->cmd_ctx
, target
);
1122 free(connection
->priv
);
1123 connection
->priv
= NULL
;
1125 target_unregister_event_callback(gdb_target_callback_event_handler
, connection
);
1127 target_call_event_callbacks(target
, TARGET_EVENT_GDB_END
);
1129 target_call_event_callbacks(target
, TARGET_EVENT_GDB_DETACH
);
1134 static void gdb_send_error(struct connection
*connection
, uint8_t the_error
)
1137 snprintf(err
, 4, "E%2.2X", the_error
);
1138 gdb_put_packet(connection
, err
, 3);
1141 static int gdb_last_signal_packet(struct connection
*connection
,
1142 char const *packet
, int packet_size
)
1144 struct target
*target
= get_target_from_connection(connection
);
1145 struct gdb_connection
*gdb_con
= connection
->priv
;
1149 if (!gdb_con
->attached
) {
1150 /* if we are here we have received a kill packet
1151 * reply W stop reply otherwise gdb gets very unhappy */
1152 gdb_put_packet(connection
, "W00", 3);
1156 signal_var
= gdb_last_signal(target
);
1158 snprintf(sig_reply
, 4, "S%2.2x", signal_var
);
1159 gdb_put_packet(connection
, sig_reply
, 3);
1164 static inline int gdb_reg_pos(struct target
*target
, int pos
, int len
)
1166 if (target
->endianness
== TARGET_LITTLE_ENDIAN
)
1169 return len
- 1 - pos
;
1172 /* Convert register to string of bytes. NB! The # of bits in the
1173 * register might be non-divisible by 8(a byte), in which
1174 * case an entire byte is shown.
1176 * NB! the format on the wire is the target endianness
1178 * The format of reg->value is little endian
1181 static void gdb_str_to_target(struct target
*target
,
1182 char *tstr
, struct reg
*reg
)
1189 buf_len
= DIV_ROUND_UP(reg
->size
, 8);
1191 for (i
= 0; i
< buf_len
; i
++) {
1192 int j
= gdb_reg_pos(target
, i
, buf_len
);
1193 tstr
+= sprintf(tstr
, "%02x", buf
[j
]);
1197 /* copy over in register buffer */
1198 static void gdb_target_to_reg(struct target
*target
,
1199 char const *tstr
, int str_len
, uint8_t *bin
)
1202 LOG_ERROR("BUG: gdb value with uneven number of characters encountered");
1207 for (i
= 0; i
< str_len
; i
+= 2) {
1209 if (sscanf(tstr
+ i
, "%02x", &t
) != 1) {
1210 LOG_ERROR("BUG: unable to convert register value");
1214 int j
= gdb_reg_pos(target
, i
/2, str_len
/2);
1219 static int gdb_get_registers_packet(struct connection
*connection
,
1220 char const *packet
, int packet_size
)
1222 struct target
*target
= get_target_from_connection(connection
);
1223 struct reg
**reg_list
;
1226 int reg_packet_size
= 0;
1231 #ifdef _DEBUG_GDB_IO_
1235 if ((target
->rtos
) && (rtos_get_gdb_reg_list(connection
) == ERROR_OK
))
1238 retval
= target_get_gdb_reg_list(target
, ®_list
, ®_list_size
,
1240 if (retval
!= ERROR_OK
)
1241 return gdb_error(connection
, retval
);
1243 for (i
= 0; i
< reg_list_size
; i
++) {
1244 if (!reg_list
[i
] || reg_list
[i
]->exist
== false || reg_list
[i
]->hidden
)
1246 reg_packet_size
+= DIV_ROUND_UP(reg_list
[i
]->size
, 8) * 2;
1249 assert(reg_packet_size
> 0);
1251 reg_packet
= malloc(reg_packet_size
+ 1); /* plus one for string termination null */
1255 reg_packet_p
= reg_packet
;
1257 for (i
= 0; i
< reg_list_size
; i
++) {
1258 if (!reg_list
[i
] || reg_list
[i
]->exist
== false || reg_list
[i
]->hidden
)
1260 if (!reg_list
[i
]->valid
) {
1261 retval
= reg_list
[i
]->type
->get(reg_list
[i
]);
1262 if (retval
!= ERROR_OK
&& gdb_report_register_access_error
) {
1263 LOG_DEBUG("Couldn't get register %s.", reg_list
[i
]->name
);
1266 return gdb_error(connection
, retval
);
1269 gdb_str_to_target(target
, reg_packet_p
, reg_list
[i
]);
1270 reg_packet_p
+= DIV_ROUND_UP(reg_list
[i
]->size
, 8) * 2;
1273 #ifdef _DEBUG_GDB_IO_
1275 char *reg_packet_p_debug
;
1276 reg_packet_p_debug
= strndup(reg_packet
, reg_packet_size
);
1277 LOG_DEBUG("reg_packet: %s", reg_packet_p_debug
);
1278 free(reg_packet_p_debug
);
1282 gdb_put_packet(connection
, reg_packet
, reg_packet_size
);
1290 static int gdb_set_registers_packet(struct connection
*connection
,
1291 char const *packet
, int packet_size
)
1293 struct target
*target
= get_target_from_connection(connection
);
1295 struct reg
**reg_list
;
1298 char const *packet_p
;
1300 #ifdef _DEBUG_GDB_IO_
1304 /* skip command character */
1308 if (packet_size
% 2) {
1309 LOG_WARNING("GDB set_registers packet with uneven characters received, dropping connection");
1310 return ERROR_SERVER_REMOTE_CLOSED
;
1313 retval
= target_get_gdb_reg_list(target
, ®_list
, ®_list_size
,
1315 if (retval
!= ERROR_OK
)
1316 return gdb_error(connection
, retval
);
1319 for (i
= 0; i
< reg_list_size
; i
++) {
1321 int chars
= (DIV_ROUND_UP(reg_list
[i
]->size
, 8) * 2);
1323 if (packet_p
+ chars
> packet
+ packet_size
)
1324 LOG_ERROR("BUG: register packet is too small for registers");
1326 bin_buf
= malloc(DIV_ROUND_UP(reg_list
[i
]->size
, 8));
1327 gdb_target_to_reg(target
, packet_p
, chars
, bin_buf
);
1329 retval
= reg_list
[i
]->type
->set(reg_list
[i
], bin_buf
);
1330 if (retval
!= ERROR_OK
&& gdb_report_register_access_error
) {
1331 LOG_DEBUG("Couldn't set register %s.", reg_list
[i
]->name
);
1334 return gdb_error(connection
, retval
);
1337 /* advance packet pointer */
1343 /* free struct reg *reg_list[] array allocated by get_gdb_reg_list */
1346 gdb_put_packet(connection
, "OK", 2);
1351 static int gdb_get_register_packet(struct connection
*connection
,
1352 char const *packet
, int packet_size
)
1354 struct target
*target
= get_target_from_connection(connection
);
1356 int reg_num
= strtoul(packet
+ 1, NULL
, 16);
1357 struct reg
**reg_list
;
1361 #ifdef _DEBUG_GDB_IO_
1365 if ((target
->rtos
) && (rtos_get_gdb_reg(connection
, reg_num
) == ERROR_OK
))
1368 retval
= target_get_gdb_reg_list_noread(target
, ®_list
, ®_list_size
,
1370 if (retval
!= ERROR_OK
)
1371 return gdb_error(connection
, retval
);
1373 if (reg_list_size
<= reg_num
) {
1374 LOG_ERROR("gdb requested a non-existing register (reg_num=%d)", reg_num
);
1375 return ERROR_SERVER_REMOTE_CLOSED
;
1378 if (!reg_list
[reg_num
]->valid
) {
1379 retval
= reg_list
[reg_num
]->type
->get(reg_list
[reg_num
]);
1380 if (retval
!= ERROR_OK
&& gdb_report_register_access_error
) {
1381 LOG_DEBUG("Couldn't get register %s.", reg_list
[reg_num
]->name
);
1383 return gdb_error(connection
, retval
);
1387 reg_packet
= calloc(DIV_ROUND_UP(reg_list
[reg_num
]->size
, 8) * 2 + 1, 1); /* plus one for string termination null */
1389 gdb_str_to_target(target
, reg_packet
, reg_list
[reg_num
]);
1391 gdb_put_packet(connection
, reg_packet
, DIV_ROUND_UP(reg_list
[reg_num
]->size
, 8) * 2);
1399 static int gdb_set_register_packet(struct connection
*connection
,
1400 char const *packet
, int packet_size
)
1402 struct target
*target
= get_target_from_connection(connection
);
1404 int reg_num
= strtoul(packet
+ 1, &separator
, 16);
1405 struct reg
**reg_list
;
1409 #ifdef _DEBUG_GDB_IO_
1413 if (*separator
!= '=') {
1414 LOG_ERROR("GDB 'set register packet', but no '=' following the register number");
1415 return ERROR_SERVER_REMOTE_CLOSED
;
1417 size_t chars
= strlen(separator
+ 1);
1418 uint8_t *bin_buf
= malloc(chars
/ 2);
1419 gdb_target_to_reg(target
, separator
+ 1, chars
, bin_buf
);
1421 if ((target
->rtos
) &&
1422 (rtos_set_reg(connection
, reg_num
, bin_buf
) == ERROR_OK
)) {
1424 gdb_put_packet(connection
, "OK", 2);
1428 retval
= target_get_gdb_reg_list_noread(target
, ®_list
, ®_list_size
,
1430 if (retval
!= ERROR_OK
) {
1432 return gdb_error(connection
, retval
);
1435 if (reg_list_size
<= reg_num
) {
1436 LOG_ERROR("gdb requested a non-existing register (reg_num=%d)", reg_num
);
1439 return ERROR_SERVER_REMOTE_CLOSED
;
1442 if (chars
!= (DIV_ROUND_UP(reg_list
[reg_num
]->size
, 8) * 2)) {
1443 LOG_ERROR("gdb sent %zu bits for a %" PRIu32
"-bit register (%s)",
1444 chars
* 4, reg_list
[reg_num
]->size
, reg_list
[reg_num
]->name
);
1447 return ERROR_SERVER_REMOTE_CLOSED
;
1450 gdb_target_to_reg(target
, separator
+ 1, chars
, bin_buf
);
1452 retval
= reg_list
[reg_num
]->type
->set(reg_list
[reg_num
], bin_buf
);
1453 if (retval
!= ERROR_OK
&& gdb_report_register_access_error
) {
1454 LOG_DEBUG("Couldn't set register %s.", reg_list
[reg_num
]->name
);
1457 return gdb_error(connection
, retval
);
1460 gdb_put_packet(connection
, "OK", 2);
1468 /* No attempt is made to translate the "retval" to
1469 * GDB speak. This has to be done at the calling
1470 * site as no mapping really exists.
1472 static int gdb_error(struct connection
*connection
, int retval
)
1474 LOG_DEBUG("Reporting %i to GDB as generic error", retval
);
1475 gdb_send_error(connection
, EFAULT
);
1479 /* We don't have to worry about the default 2 second timeout for GDB packets,
1480 * because GDB breaks up large memory reads into smaller reads.
1482 static int gdb_read_memory_packet(struct connection
*connection
,
1483 char const *packet
, int packet_size
)
1485 struct target
*target
= get_target_from_connection(connection
);
1493 int retval
= ERROR_OK
;
1495 /* skip command character */
1498 addr
= strtoull(packet
, &separator
, 16);
1500 if (*separator
!= ',') {
1501 LOG_ERROR("incomplete read memory packet received, dropping connection");
1502 return ERROR_SERVER_REMOTE_CLOSED
;
1505 len
= strtoul(separator
+ 1, NULL
, 16);
1508 LOG_WARNING("invalid read memory packet received (len == 0)");
1509 gdb_put_packet(connection
, "", 0);
1513 buffer
= malloc(len
);
1515 LOG_DEBUG("addr: 0x%16.16" PRIx64
", len: 0x%8.8" PRIx32
"", addr
, len
);
1517 retval
= ERROR_NOT_IMPLEMENTED
;
1519 retval
= rtos_read_buffer(target
, addr
, len
, buffer
);
1520 if (retval
== ERROR_NOT_IMPLEMENTED
)
1521 retval
= target_read_buffer(target
, addr
, len
, buffer
);
1523 if ((retval
!= ERROR_OK
) && !gdb_report_data_abort
) {
1524 /* TODO : Here we have to lie and send back all zero's lest stack traces won't work.
1525 * At some point this might be fixed in GDB, in which case this code can be removed.
1527 * OpenOCD developers are acutely aware of this problem, but there is nothing
1528 * gained by involving the user in this problem that hopefully will get resolved
1531 * http://sourceware.org/cgi-bin/gnatsweb.pl? \
1532 * cmd = view%20audit-trail&database = gdb&pr = 2395
1534 * For now, the default is to fix up things to make current GDB versions work.
1535 * This can be overwritten using the gdb_report_data_abort <'enable'|'disable'> command.
1537 memset(buffer
, 0, len
);
1541 if (retval
== ERROR_OK
) {
1542 hex_buffer
= malloc(len
* 2 + 1);
1544 size_t pkt_len
= hexify(hex_buffer
, buffer
, len
, len
* 2 + 1);
1546 gdb_put_packet(connection
, hex_buffer
, pkt_len
);
1550 retval
= gdb_error(connection
, retval
);
1557 static int gdb_write_memory_packet(struct connection
*connection
,
1558 char const *packet
, int packet_size
)
1560 struct target
*target
= get_target_from_connection(connection
);
1568 /* skip command character */
1571 addr
= strtoull(packet
, &separator
, 16);
1573 if (*separator
!= ',') {
1574 LOG_ERROR("incomplete write memory packet received, dropping connection");
1575 return ERROR_SERVER_REMOTE_CLOSED
;
1578 len
= strtoul(separator
+ 1, &separator
, 16);
1580 if (*(separator
++) != ':') {
1581 LOG_ERROR("incomplete write memory packet received, dropping connection");
1582 return ERROR_SERVER_REMOTE_CLOSED
;
1585 buffer
= malloc(len
);
1587 LOG_DEBUG("addr: 0x%" PRIx64
", len: 0x%8.8" PRIx32
"", addr
, len
);
1589 if (unhexify(buffer
, separator
, len
) != len
)
1590 LOG_ERROR("unable to decode memory packet");
1592 retval
= ERROR_NOT_IMPLEMENTED
;
1594 retval
= rtos_write_buffer(target
, addr
, len
, buffer
);
1595 if (retval
== ERROR_NOT_IMPLEMENTED
)
1596 retval
= target_write_buffer(target
, addr
, len
, buffer
);
1598 if (retval
== ERROR_OK
)
1599 gdb_put_packet(connection
, "OK", 2);
1601 retval
= gdb_error(connection
, retval
);
1608 static int gdb_write_memory_binary_packet(struct connection
*connection
,
1609 char const *packet
, int packet_size
)
1611 struct target
*target
= get_target_from_connection(connection
);
1616 int retval
= ERROR_OK
;
1617 /* Packets larger than fast_limit bytes will be acknowledged instantly on
1618 * the assumption that we're in a download and it's important to go as fast
1620 uint32_t fast_limit
= 8;
1622 /* skip command character */
1625 addr
= strtoull(packet
, &separator
, 16);
1627 if (*separator
!= ',') {
1628 LOG_ERROR("incomplete write memory binary packet received, dropping connection");
1629 return ERROR_SERVER_REMOTE_CLOSED
;
1632 len
= strtoul(separator
+ 1, &separator
, 16);
1634 if (*(separator
++) != ':') {
1635 LOG_ERROR("incomplete write memory binary packet received, dropping connection");
1636 return ERROR_SERVER_REMOTE_CLOSED
;
1639 struct gdb_connection
*gdb_connection
= connection
->priv
;
1641 if (gdb_connection
->mem_write_error
)
1642 retval
= ERROR_FAIL
;
1644 if (retval
== ERROR_OK
) {
1645 if (len
>= fast_limit
) {
1646 /* By replying the packet *immediately* GDB will send us a new packet
1647 * while we write the last one to the target.
1648 * We only do this for larger writes, so that users who do something like:
1649 * p *((int*)0xdeadbeef)=8675309
1650 * will get immediate feedback that that write failed.
1652 gdb_put_packet(connection
, "OK", 2);
1655 retval
= gdb_error(connection
, retval
);
1656 /* now that we have reported the memory write error, we can clear the condition */
1657 gdb_connection
->mem_write_error
= false;
1658 if (retval
!= ERROR_OK
)
1663 LOG_DEBUG("addr: 0x%" PRIx64
", len: 0x%8.8" PRIx32
"", addr
, len
);
1665 retval
= ERROR_NOT_IMPLEMENTED
;
1667 retval
= rtos_write_buffer(target
, addr
, len
, (uint8_t *)separator
);
1668 if (retval
== ERROR_NOT_IMPLEMENTED
)
1669 retval
= target_write_buffer(target
, addr
, len
, (uint8_t *)separator
);
1671 if (retval
!= ERROR_OK
)
1672 gdb_connection
->mem_write_error
= true;
1675 if (len
< fast_limit
) {
1676 if (retval
!= ERROR_OK
) {
1677 gdb_error(connection
, retval
);
1678 gdb_connection
->mem_write_error
= false;
1680 gdb_put_packet(connection
, "OK", 2);
1687 static int gdb_step_continue_packet(struct connection
*connection
,
1688 char const *packet
, int packet_size
)
1690 struct target
*target
= get_target_from_connection(connection
);
1692 uint64_t address
= 0x0;
1693 int retval
= ERROR_OK
;
1697 if (packet_size
> 1)
1698 address
= strtoull(packet
+ 1, NULL
, 16);
1702 gdb_running_type
= packet
[0];
1703 if (packet
[0] == 'c') {
1704 LOG_DEBUG("continue");
1705 /* resume at current address, don't handle breakpoints, not debugging */
1706 retval
= target_resume(target
, current
, address
, 0, 0);
1707 } else if (packet
[0] == 's') {
1709 /* step at current or address, don't handle breakpoints */
1710 retval
= target_step(target
, current
, address
, 0);
1715 static int gdb_breakpoint_watchpoint_packet(struct connection
*connection
,
1716 char const *packet
, int packet_size
)
1718 struct target
*target
= get_target_from_connection(connection
);
1720 enum breakpoint_type bp_type
= BKPT_SOFT
/* dummy init to avoid warning */;
1721 enum watchpoint_rw wp_type
= WPT_READ
/* dummy init to avoid warning */;
1727 LOG_DEBUG("[%s]", target_name(target
));
1729 type
= strtoul(packet
+ 1, &separator
, 16);
1731 if (type
== 0) /* memory breakpoint */
1732 bp_type
= BKPT_SOFT
;
1733 else if (type
== 1) /* hardware breakpoint */
1734 bp_type
= BKPT_HARD
;
1735 else if (type
== 2) /* write watchpoint */
1736 wp_type
= WPT_WRITE
;
1737 else if (type
== 3) /* read watchpoint */
1739 else if (type
== 4) /* access watchpoint */
1740 wp_type
= WPT_ACCESS
;
1742 LOG_ERROR("invalid gdb watch/breakpoint type(%d), dropping connection", type
);
1743 return ERROR_SERVER_REMOTE_CLOSED
;
1746 if (gdb_breakpoint_override
&& ((bp_type
== BKPT_SOFT
) || (bp_type
== BKPT_HARD
)))
1747 bp_type
= gdb_breakpoint_override_type
;
1749 if (*separator
!= ',') {
1750 LOG_ERROR("incomplete breakpoint/watchpoint packet received, dropping connection");
1751 return ERROR_SERVER_REMOTE_CLOSED
;
1754 address
= strtoull(separator
+ 1, &separator
, 16);
1756 if (*separator
!= ',') {
1757 LOG_ERROR("incomplete breakpoint/watchpoint packet received, dropping connection");
1758 return ERROR_SERVER_REMOTE_CLOSED
;
1761 size
= strtoul(separator
+ 1, &separator
, 16);
1766 if (packet
[0] == 'Z') {
1767 retval
= breakpoint_add(target
, address
, size
, bp_type
);
1768 if (retval
!= ERROR_OK
) {
1769 retval
= gdb_error(connection
, retval
);
1770 if (retval
!= ERROR_OK
)
1773 gdb_put_packet(connection
, "OK", 2);
1775 breakpoint_remove(target
, address
);
1776 gdb_put_packet(connection
, "OK", 2);
1783 if (packet
[0] == 'Z') {
1784 retval
= watchpoint_add(target
, address
, size
, wp_type
, 0, 0xffffffffu
);
1785 if (retval
!= ERROR_OK
) {
1786 retval
= gdb_error(connection
, retval
);
1787 if (retval
!= ERROR_OK
)
1790 gdb_put_packet(connection
, "OK", 2);
1792 watchpoint_remove(target
, address
);
1793 gdb_put_packet(connection
, "OK", 2);
1804 /* print out a string and allocate more space as needed,
1805 * mainly used for XML at this point
1807 static __attribute__ ((format (PRINTF_ATTRIBUTE_FORMAT
, 5, 6))) void xml_printf(int *retval
,
1808 char **xml
, int *pos
, int *size
, const char *fmt
, ...)
1810 if (*retval
!= ERROR_OK
)
1815 if ((!*xml
) || (!first
)) {
1816 /* start by 0 to exercise all the code paths.
1817 * Need minimum 2 bytes to fit 1 char and 0 terminator. */
1819 *size
= *size
* 2 + 2;
1821 *xml
= realloc(*xml
, *size
);
1824 *retval
= ERROR_SERVER_REMOTE_CLOSED
;
1832 ret
= vsnprintf(*xml
+ *pos
, *size
- *pos
, fmt
, ap
);
1834 if ((ret
> 0) && ((ret
+ 1) < *size
- *pos
)) {
1838 /* there was just enough or not enough space, allocate more. */
1843 static int decode_xfer_read(char const *buf
, char **annex
, int *ofs
, unsigned int *len
)
1845 /* Locate the annex. */
1846 const char *annex_end
= strchr(buf
, ':');
1850 /* After the read marker and annex, qXfer looks like a
1851 * traditional 'm' packet. */
1853 *ofs
= strtoul(annex_end
+ 1, &separator
, 16);
1855 if (*separator
!= ',')
1858 *len
= strtoul(separator
+ 1, NULL
, 16);
1860 /* Extract the annex if needed */
1862 *annex
= strndup(buf
, annex_end
- buf
);
1870 static int compare_bank(const void *a
, const void *b
)
1872 struct flash_bank
*b1
, *b2
;
1873 b1
= *((struct flash_bank
**)a
);
1874 b2
= *((struct flash_bank
**)b
);
1876 if (b1
->base
== b2
->base
)
1878 else if (b1
->base
> b2
->base
)
1884 static int gdb_memory_map(struct connection
*connection
,
1885 char const *packet
, int packet_size
)
1887 /* We get away with only specifying flash here. Regions that are not
1888 * specified are treated as if we provided no memory map(if not we
1889 * could detect the holes and mark them as RAM).
1890 * Normally we only execute this code once, but no big deal if we
1891 * have to regenerate it a couple of times.
1894 struct target
*target
= get_target_from_connection(connection
);
1895 struct flash_bank
*p
;
1899 int retval
= ERROR_OK
;
1900 struct flash_bank
**banks
;
1904 target_addr_t ram_start
= 0;
1905 unsigned int target_flash_banks
= 0;
1907 /* skip command character */
1910 offset
= strtoul(packet
, &separator
, 16);
1911 length
= strtoul(separator
+ 1, &separator
, 16);
1913 xml_printf(&retval
, &xml
, &pos
, &size
, "<memory-map>\n");
1915 /* Sort banks in ascending order. We need to report non-flash
1916 * memory as ram (or rather read/write) by default for GDB, since
1917 * it has no concept of non-cacheable read/write memory (i/o etc).
1919 banks
= malloc(sizeof(struct flash_bank
*)*flash_get_bank_count());
1921 for (unsigned int i
= 0; i
< flash_get_bank_count(); i
++) {
1922 p
= get_flash_bank_by_num_noprobe(i
);
1923 if (p
->target
!= target
)
1925 retval
= get_flash_bank_by_num(i
, &p
);
1926 if (retval
!= ERROR_OK
) {
1928 gdb_error(connection
, retval
);
1931 banks
[target_flash_banks
++] = p
;
1934 qsort(banks
, target_flash_banks
, sizeof(struct flash_bank
*),
1937 for (unsigned int i
= 0; i
< target_flash_banks
; i
++) {
1938 unsigned sector_size
= 0;
1939 unsigned group_len
= 0;
1943 if (ram_start
< p
->base
)
1944 xml_printf(&retval
, &xml
, &pos
, &size
,
1945 "<memory type=\"ram\" start=\"" TARGET_ADDR_FMT
"\" "
1946 "length=\"" TARGET_ADDR_FMT
"\"/>\n",
1947 ram_start
, p
->base
- ram_start
);
1949 /* Report adjacent groups of same-size sectors. So for
1950 * example top boot CFI flash will list an initial region
1951 * with several large sectors (maybe 128KB) and several
1952 * smaller ones at the end (maybe 32KB). STR7 will have
1953 * regions with 8KB, 32KB, and 64KB sectors; etc.
1955 for (unsigned int j
= 0; j
< p
->num_sectors
; j
++) {
1957 /* Maybe start a new group of sectors. */
1958 if (sector_size
== 0) {
1959 if (p
->sectors
[j
].offset
+ p
->sectors
[j
].size
> p
->size
) {
1960 LOG_WARNING("The flash sector at offset 0x%08" PRIx32
1961 " overflows the end of %s bank.",
1962 p
->sectors
[j
].offset
, p
->name
);
1963 LOG_WARNING("The rest of bank will not show in gdb memory map.");
1966 target_addr_t start
;
1967 start
= p
->base
+ p
->sectors
[j
].offset
;
1968 xml_printf(&retval
, &xml
, &pos
, &size
,
1969 "<memory type=\"flash\" "
1970 "start=\"" TARGET_ADDR_FMT
"\" ",
1972 sector_size
= p
->sectors
[j
].size
;
1973 group_len
= sector_size
;
1975 group_len
+= sector_size
; /* equal to p->sectors[j].size */
1978 /* Does this finish a group of sectors?
1979 * If not, continue an already-started group.
1981 if (j
< p
->num_sectors
- 1
1982 && p
->sectors
[j
+ 1].size
== sector_size
1983 && p
->sectors
[j
+ 1].offset
== p
->sectors
[j
].offset
+ sector_size
1984 && p
->sectors
[j
+ 1].offset
+ p
->sectors
[j
+ 1].size
<= p
->size
)
1987 xml_printf(&retval
, &xml
, &pos
, &size
,
1988 "length=\"0x%x\">\n"
1989 "<property name=\"blocksize\">"
1997 ram_start
= p
->base
+ p
->size
;
2001 xml_printf(&retval
, &xml
, &pos
, &size
,
2002 "<memory type=\"ram\" start=\"" TARGET_ADDR_FMT
"\" "
2003 "length=\"" TARGET_ADDR_FMT
"\"/>\n",
2004 ram_start
, target_address_max(target
) - ram_start
+ 1);
2005 /* ELSE a flash chip could be at the very end of the address space, in
2006 * which case ram_start will be precisely 0 */
2010 xml_printf(&retval
, &xml
, &pos
, &size
, "</memory-map>\n");
2012 if (retval
!= ERROR_OK
) {
2014 gdb_error(connection
, retval
);
2018 if (offset
+ length
> pos
)
2019 length
= pos
- offset
;
2021 char *t
= malloc(length
+ 1);
2023 memcpy(t
+ 1, xml
+ offset
, length
);
2024 gdb_put_packet(connection
, t
, length
+ 1);
2031 static const char *gdb_get_reg_type_name(enum reg_type type
)
2040 case REG_TYPE_INT16
:
2042 case REG_TYPE_INT32
:
2044 case REG_TYPE_INT64
:
2046 case REG_TYPE_INT128
:
2050 case REG_TYPE_UINT8
:
2052 case REG_TYPE_UINT16
:
2054 case REG_TYPE_UINT32
:
2056 case REG_TYPE_UINT64
:
2058 case REG_TYPE_UINT128
:
2060 case REG_TYPE_CODE_PTR
:
2062 case REG_TYPE_DATA_PTR
:
2064 case REG_TYPE_FLOAT
:
2066 case REG_TYPE_IEEE_SINGLE
:
2067 return "ieee_single";
2068 case REG_TYPE_IEEE_DOUBLE
:
2069 return "ieee_double";
2070 case REG_TYPE_ARCH_DEFINED
:
2071 return "int"; /* return arbitrary string to avoid compile warning. */
2074 return "int"; /* "int" as default value */
2077 static int lookup_add_arch_defined_types(char const **arch_defined_types_list
[], const char *type_id
,
2078 int *num_arch_defined_types
)
2080 int tbl_sz
= *num_arch_defined_types
;
2082 if (type_id
&& (strcmp(type_id
, ""))) {
2083 for (int j
= 0; j
< (tbl_sz
+ 1); j
++) {
2084 if (!((*arch_defined_types_list
)[j
])) {
2085 (*arch_defined_types_list
)[tbl_sz
++] = type_id
;
2086 *arch_defined_types_list
= realloc(*arch_defined_types_list
,
2087 sizeof(char *) * (tbl_sz
+ 1));
2088 (*arch_defined_types_list
)[tbl_sz
] = NULL
;
2089 *num_arch_defined_types
= tbl_sz
;
2092 if (!strcmp((*arch_defined_types_list
)[j
], type_id
))
2101 static int gdb_generate_reg_type_description(struct target
*target
,
2102 char **tdesc
, int *pos
, int *size
, struct reg_data_type
*type
,
2103 char const **arch_defined_types_list
[], int *num_arch_defined_types
)
2105 int retval
= ERROR_OK
;
2107 if (type
->type_class
== REG_TYPE_CLASS_VECTOR
) {
2108 struct reg_data_type
*data_type
= type
->reg_type_vector
->type
;
2109 if (data_type
->type
== REG_TYPE_ARCH_DEFINED
) {
2110 if (lookup_add_arch_defined_types(arch_defined_types_list
, data_type
->id
,
2111 num_arch_defined_types
))
2112 gdb_generate_reg_type_description(target
, tdesc
, pos
, size
, data_type
,
2113 arch_defined_types_list
,
2114 num_arch_defined_types
);
2116 /* <vector id="id" type="type" count="count"/> */
2117 xml_printf(&retval
, tdesc
, pos
, size
,
2118 "<vector id=\"%s\" type=\"%s\" count=\"%" PRIu32
"\"/>\n",
2119 type
->id
, type
->reg_type_vector
->type
->id
,
2120 type
->reg_type_vector
->count
);
2122 } else if (type
->type_class
== REG_TYPE_CLASS_UNION
) {
2123 struct reg_data_type_union_field
*field
;
2124 field
= type
->reg_type_union
->fields
;
2126 struct reg_data_type
*data_type
= field
->type
;
2127 if (data_type
->type
== REG_TYPE_ARCH_DEFINED
) {
2128 if (lookup_add_arch_defined_types(arch_defined_types_list
, data_type
->id
,
2129 num_arch_defined_types
))
2130 gdb_generate_reg_type_description(target
, tdesc
, pos
, size
, data_type
,
2131 arch_defined_types_list
,
2132 num_arch_defined_types
);
2135 field
= field
->next
;
2138 * <field name="name" type="type"/> ...
2140 xml_printf(&retval
, tdesc
, pos
, size
,
2141 "<union id=\"%s\">\n",
2144 field
= type
->reg_type_union
->fields
;
2146 xml_printf(&retval
, tdesc
, pos
, size
,
2147 "<field name=\"%s\" type=\"%s\"/>\n",
2148 field
->name
, field
->type
->id
);
2150 field
= field
->next
;
2153 xml_printf(&retval
, tdesc
, pos
, size
,
2156 } else if (type
->type_class
== REG_TYPE_CLASS_STRUCT
) {
2157 struct reg_data_type_struct_field
*field
;
2158 field
= type
->reg_type_struct
->fields
;
2160 if (field
->use_bitfields
) {
2161 /* <struct id="id" size="size">
2162 * <field name="name" start="start" end="end"/> ...
2164 xml_printf(&retval
, tdesc
, pos
, size
,
2165 "<struct id=\"%s\" size=\"%" PRIu32
"\">\n",
2166 type
->id
, type
->reg_type_struct
->size
);
2168 xml_printf(&retval
, tdesc
, pos
, size
,
2169 "<field name=\"%s\" start=\"%" PRIu32
"\" end=\"%" PRIu32
"\" type=\"%s\" />\n",
2170 field
->name
, field
->bitfield
->start
, field
->bitfield
->end
,
2171 gdb_get_reg_type_name(field
->bitfield
->type
));
2173 field
= field
->next
;
2177 struct reg_data_type
*data_type
= field
->type
;
2178 if (data_type
->type
== REG_TYPE_ARCH_DEFINED
) {
2179 if (lookup_add_arch_defined_types(arch_defined_types_list
, data_type
->id
,
2180 num_arch_defined_types
))
2181 gdb_generate_reg_type_description(target
, tdesc
, pos
, size
, data_type
,
2182 arch_defined_types_list
,
2183 num_arch_defined_types
);
2188 * <field name="name" type="type"/> ...
2190 xml_printf(&retval
, tdesc
, pos
, size
,
2191 "<struct id=\"%s\">\n",
2194 xml_printf(&retval
, tdesc
, pos
, size
,
2195 "<field name=\"%s\" type=\"%s\"/>\n",
2196 field
->name
, field
->type
->id
);
2198 field
= field
->next
;
2202 xml_printf(&retval
, tdesc
, pos
, size
,
2205 } else if (type
->type_class
== REG_TYPE_CLASS_FLAGS
) {
2206 /* <flags id="id" size="size">
2207 * <field name="name" start="start" end="end"/> ...
2209 xml_printf(&retval
, tdesc
, pos
, size
,
2210 "<flags id=\"%s\" size=\"%" PRIu32
"\">\n",
2211 type
->id
, type
->reg_type_flags
->size
);
2213 struct reg_data_type_flags_field
*field
;
2214 field
= type
->reg_type_flags
->fields
;
2216 xml_printf(&retval
, tdesc
, pos
, size
,
2217 "<field name=\"%s\" start=\"%" PRIu32
"\" end=\"%" PRIu32
"\" type=\"%s\" />\n",
2218 field
->name
, field
->bitfield
->start
, field
->bitfield
->end
,
2219 gdb_get_reg_type_name(field
->bitfield
->type
));
2221 field
= field
->next
;
2224 xml_printf(&retval
, tdesc
, pos
, size
,
2232 /* Get a list of available target registers features. feature_list must
2233 * be freed by caller.
2235 static int get_reg_features_list(struct target
*target
, char const **feature_list
[], int *feature_list_size
,
2236 struct reg
**reg_list
, int reg_list_size
)
2240 /* Start with only one element */
2241 *feature_list
= calloc(1, sizeof(char *));
2243 for (int i
= 0; i
< reg_list_size
; i
++) {
2244 if (reg_list
[i
]->exist
== false || reg_list
[i
]->hidden
)
2247 if (reg_list
[i
]->feature
2248 && reg_list
[i
]->feature
->name
2249 && (strcmp(reg_list
[i
]->feature
->name
, ""))) {
2250 /* We found a feature, check if the feature is already in the
2251 * table. If not, allocate a new entry for the table and
2252 * put the new feature in it.
2254 for (int j
= 0; j
< (tbl_sz
+ 1); j
++) {
2255 if (!((*feature_list
)[j
])) {
2256 (*feature_list
)[tbl_sz
++] = reg_list
[i
]->feature
->name
;
2257 *feature_list
= realloc(*feature_list
, sizeof(char *) * (tbl_sz
+ 1));
2258 (*feature_list
)[tbl_sz
] = NULL
;
2261 if (!strcmp((*feature_list
)[j
], reg_list
[i
]->feature
->name
))
2268 if (feature_list_size
)
2269 *feature_list_size
= tbl_sz
;
2274 /* Create a register list that's the union of all the registers of the SMP
2275 * group this target is in. If the target is not part of an SMP group, this
2276 * returns the same as target_get_gdb_reg_list_noread().
2278 static int smp_reg_list_noread(struct target
*target
,
2279 struct reg
**combined_list
[], int *combined_list_size
,
2280 enum target_register_class reg_class
)
2283 return target_get_gdb_reg_list_noread(target
, combined_list
,
2284 combined_list_size
, REG_CLASS_ALL
);
2286 unsigned int combined_allocated
= 256;
2287 struct reg
**local_list
= malloc(combined_allocated
* sizeof(struct reg
*));
2289 LOG_ERROR("malloc(%zu) failed", combined_allocated
* sizeof(struct reg
*));
2292 unsigned int local_list_size
= 0;
2294 struct target_list
*head
;
2295 foreach_smp_target(head
, target
->smp_targets
) {
2296 if (!target_was_examined(head
->target
))
2299 struct reg
**reg_list
= NULL
;
2301 int result
= target_get_gdb_reg_list_noread(head
->target
, ®_list
,
2302 ®_list_size
, reg_class
);
2303 if (result
!= ERROR_OK
) {
2307 for (int i
= 0; i
< reg_list_size
; i
++) {
2309 struct reg
*a
= reg_list
[i
];
2311 /* Nested loop makes this O(n^2), but this entire function with
2312 * 5 RISC-V targets takes just 2ms on my computer. Fast enough
2314 for (unsigned int j
= 0; j
< local_list_size
; j
++) {
2315 struct reg
*b
= local_list
[j
];
2316 if (!strcmp(a
->name
, b
->name
)) {
2318 if (a
->size
!= b
->size
) {
2319 LOG_ERROR("SMP register %s is %d bits on one "
2320 "target, but %d bits on another target.",
2321 a
->name
, a
->size
, b
->size
);
2330 LOG_DEBUG("[%s] %s not found in combined list", target_name(target
), a
->name
);
2331 if (local_list_size
>= combined_allocated
) {
2332 combined_allocated
*= 2;
2333 local_list
= realloc(local_list
, combined_allocated
* sizeof(struct reg
*));
2335 LOG_ERROR("realloc(%zu) failed", combined_allocated
* sizeof(struct reg
*));
2339 local_list
[local_list_size
] = a
;
2347 if (local_list_size
== 0) {
2348 LOG_ERROR("Unable to get register list");
2353 /* Now warn the user about any registers that weren't found in every target. */
2354 foreach_smp_target(head
, target
->smp_targets
) {
2355 if (!target_was_examined(head
->target
))
2358 struct reg
**reg_list
= NULL
;
2360 int result
= target_get_gdb_reg_list_noread(head
->target
, ®_list
,
2361 ®_list_size
, reg_class
);
2362 if (result
!= ERROR_OK
) {
2366 for (unsigned int i
= 0; i
< local_list_size
; i
++) {
2368 struct reg
*a
= local_list
[i
];
2369 for (int j
= 0; j
< reg_list_size
; j
++) {
2370 struct reg
*b
= reg_list
[j
];
2371 if (b
->exist
&& !strcmp(a
->name
, b
->name
)) {
2377 LOG_WARNING("Register %s does not exist in %s, which is part of an SMP group where "
2378 "this register does exist.",
2379 a
->name
, target_name(head
->target
));
2385 *combined_list
= local_list
;
2386 *combined_list_size
= local_list_size
;
2390 static int gdb_generate_target_description(struct target
*target
, char **tdesc_out
)
2392 int retval
= ERROR_OK
;
2393 struct reg
**reg_list
= NULL
;
2395 char const *architecture
;
2396 char const **features
= NULL
;
2397 int feature_list_size
= 0;
2403 retval
= smp_reg_list_noread(target
, ®_list
, ®_list_size
,
2406 if (retval
!= ERROR_OK
) {
2407 LOG_ERROR("get register list failed");
2408 retval
= ERROR_FAIL
;
2412 if (reg_list_size
<= 0) {
2413 LOG_ERROR("get register list failed");
2414 retval
= ERROR_FAIL
;
2418 /* Get a list of available target registers features */
2419 retval
= get_reg_features_list(target
, &features
, &feature_list_size
, reg_list
, reg_list_size
);
2420 if (retval
!= ERROR_OK
) {
2421 LOG_ERROR("Can't get the registers feature list");
2422 retval
= ERROR_FAIL
;
2426 /* If we found some features associated with registers, create sections */
2427 int current_feature
= 0;
2429 xml_printf(&retval
, &tdesc
, &pos
, &size
,
2430 "<?xml version=\"1.0\"?>\n"
2431 "<!DOCTYPE target SYSTEM \"gdb-target.dtd\">\n"
2432 "<target version=\"1.0\">\n");
2434 /* generate architecture element if supported by target */
2435 architecture
= target_get_gdb_arch(target
);
2437 xml_printf(&retval
, &tdesc
, &pos
, &size
,
2438 "<architecture>%s</architecture>\n", architecture
);
2440 /* generate target description according to register list */
2442 while (features
[current_feature
]) {
2443 char const **arch_defined_types
= NULL
;
2444 int num_arch_defined_types
= 0;
2446 arch_defined_types
= calloc(1, sizeof(char *));
2447 xml_printf(&retval
, &tdesc
, &pos
, &size
,
2448 "<feature name=\"%s\">\n",
2449 features
[current_feature
]);
2452 for (i
= 0; i
< reg_list_size
; i
++) {
2454 if (reg_list
[i
]->exist
== false || reg_list
[i
]->hidden
)
2457 if (strcmp(reg_list
[i
]->feature
->name
, features
[current_feature
]))
2460 const char *type_str
;
2461 if (reg_list
[i
]->reg_data_type
) {
2462 if (reg_list
[i
]->reg_data_type
->type
== REG_TYPE_ARCH_DEFINED
) {
2463 /* generate <type... first, if there are architecture-defined types. */
2464 if (lookup_add_arch_defined_types(&arch_defined_types
,
2465 reg_list
[i
]->reg_data_type
->id
,
2466 &num_arch_defined_types
))
2467 gdb_generate_reg_type_description(target
, &tdesc
, &pos
, &size
,
2468 reg_list
[i
]->reg_data_type
,
2469 &arch_defined_types
,
2470 &num_arch_defined_types
);
2472 type_str
= reg_list
[i
]->reg_data_type
->id
;
2474 /* predefined type */
2475 type_str
= gdb_get_reg_type_name(
2476 reg_list
[i
]->reg_data_type
->type
);
2479 /* Default type is "int" */
2483 xml_printf(&retval
, &tdesc
, &pos
, &size
,
2484 "<reg name=\"%s\"", reg_list
[i
]->name
);
2485 xml_printf(&retval
, &tdesc
, &pos
, &size
,
2486 " bitsize=\"%" PRIu32
"\"", reg_list
[i
]->size
);
2487 xml_printf(&retval
, &tdesc
, &pos
, &size
,
2488 " regnum=\"%" PRIu32
"\"", reg_list
[i
]->number
);
2489 if (reg_list
[i
]->caller_save
)
2490 xml_printf(&retval
, &tdesc
, &pos
, &size
,
2491 " save-restore=\"yes\"");
2493 xml_printf(&retval
, &tdesc
, &pos
, &size
,
2494 " save-restore=\"no\"");
2496 xml_printf(&retval
, &tdesc
, &pos
, &size
,
2497 " type=\"%s\"", type_str
);
2499 if (reg_list
[i
]->group
)
2500 xml_printf(&retval
, &tdesc
, &pos
, &size
,
2501 " group=\"%s\"", reg_list
[i
]->group
);
2503 xml_printf(&retval
, &tdesc
, &pos
, &size
,
2507 xml_printf(&retval
, &tdesc
, &pos
, &size
,
2511 free(arch_defined_types
);
2515 xml_printf(&retval
, &tdesc
, &pos
, &size
,
2522 if (retval
== ERROR_OK
)
2530 static int gdb_get_target_description_chunk(struct target
*target
, struct target_desc_format
*target_desc
,
2531 char **chunk
, int32_t offset
, uint32_t length
)
2534 LOG_ERROR("Unable to Generate Target Description");
2538 char *tdesc
= target_desc
->tdesc
;
2539 uint32_t tdesc_length
= target_desc
->tdesc_length
;
2542 int retval
= gdb_generate_target_description(target
, &tdesc
);
2543 if (retval
!= ERROR_OK
) {
2544 LOG_ERROR("Unable to Generate Target Description");
2548 tdesc_length
= strlen(tdesc
);
2553 if (length
< (tdesc_length
- offset
))
2554 transfer_type
= 'm';
2556 transfer_type
= 'l';
2558 *chunk
= malloc(length
+ 2);
2560 LOG_ERROR("Unable to allocate memory");
2564 (*chunk
)[0] = transfer_type
;
2565 if (transfer_type
== 'm') {
2566 strncpy((*chunk
) + 1, tdesc
+ offset
, length
);
2567 (*chunk
)[1 + length
] = '\0';
2569 strncpy((*chunk
) + 1, tdesc
+ offset
, tdesc_length
- offset
);
2570 (*chunk
)[1 + (tdesc_length
- offset
)] = '\0';
2572 /* After gdb-server sends out last chunk, invalidate tdesc. */
2578 target_desc
->tdesc
= tdesc
;
2579 target_desc
->tdesc_length
= tdesc_length
;
2584 static int gdb_target_description_supported(struct target
*target
, int *supported
)
2586 int retval
= ERROR_OK
;
2587 struct reg
**reg_list
= NULL
;
2588 int reg_list_size
= 0;
2589 char const **features
= NULL
;
2590 int feature_list_size
= 0;
2592 char const *architecture
= target_get_gdb_arch(target
);
2594 retval
= target_get_gdb_reg_list_noread(target
, ®_list
,
2595 ®_list_size
, REG_CLASS_ALL
);
2596 if (retval
!= ERROR_OK
) {
2597 LOG_ERROR("get register list failed");
2601 if (reg_list_size
<= 0) {
2602 LOG_ERROR("get register list failed");
2603 retval
= ERROR_FAIL
;
2607 /* Get a list of available target registers features */
2608 retval
= get_reg_features_list(target
, &features
, &feature_list_size
, reg_list
, reg_list_size
);
2609 if (retval
!= ERROR_OK
) {
2610 LOG_ERROR("Can't get the registers feature list");
2615 if (architecture
|| feature_list_size
)
2629 static int gdb_generate_thread_list(struct target
*target
, char **thread_list_out
)
2631 struct rtos
*rtos
= target
->rtos
;
2632 int retval
= ERROR_OK
;
2633 char *thread_list
= NULL
;
2637 xml_printf(&retval
, &thread_list
, &pos
, &size
,
2638 "<?xml version=\"1.0\"?>\n"
2642 for (int i
= 0; i
< rtos
->thread_count
; i
++) {
2643 struct thread_detail
*thread_detail
= &rtos
->thread_details
[i
];
2645 if (!thread_detail
->exists
)
2648 if (thread_detail
->thread_name_str
)
2649 xml_printf(&retval
, &thread_list
, &pos
, &size
,
2650 "<thread id=\"%" PRIx64
"\" name=\"%s\">",
2651 thread_detail
->threadid
,
2652 thread_detail
->thread_name_str
);
2654 xml_printf(&retval
, &thread_list
, &pos
, &size
,
2655 "<thread id=\"%" PRIx64
"\">", thread_detail
->threadid
);
2657 if (thread_detail
->thread_name_str
)
2658 xml_printf(&retval
, &thread_list
, &pos
, &size
,
2659 "Name: %s", thread_detail
->thread_name_str
);
2661 if (thread_detail
->extra_info_str
) {
2662 if (thread_detail
->thread_name_str
)
2663 xml_printf(&retval
, &thread_list
, &pos
, &size
,
2665 xml_printf(&retval
, &thread_list
, &pos
, &size
,
2666 "%s", thread_detail
->extra_info_str
);
2669 xml_printf(&retval
, &thread_list
, &pos
, &size
,
2674 xml_printf(&retval
, &thread_list
, &pos
, &size
,
2677 if (retval
== ERROR_OK
)
2678 *thread_list_out
= thread_list
;
2685 static int gdb_get_thread_list_chunk(struct target
*target
, char **thread_list
,
2686 char **chunk
, int32_t offset
, uint32_t length
)
2688 if (!*thread_list
) {
2689 int retval
= gdb_generate_thread_list(target
, thread_list
);
2690 if (retval
!= ERROR_OK
) {
2691 LOG_ERROR("Unable to Generate Thread List");
2696 size_t thread_list_length
= strlen(*thread_list
);
2699 length
= MIN(length
, thread_list_length
- offset
);
2700 if (length
< (thread_list_length
- offset
))
2701 transfer_type
= 'm';
2703 transfer_type
= 'l';
2705 *chunk
= malloc(length
+ 2 + 3);
2706 /* Allocating extra 3 bytes prevents false positive valgrind report
2707 * of strlen(chunk) word access:
2708 * Invalid read of size 4
2709 * Address 0x4479934 is 44 bytes inside a block of size 45 alloc'd */
2711 LOG_ERROR("Unable to allocate memory");
2715 (*chunk
)[0] = transfer_type
;
2716 strncpy((*chunk
) + 1, (*thread_list
) + offset
, length
);
2717 (*chunk
)[1 + length
] = '\0';
2719 /* After gdb-server sends out last chunk, invalidate thread list. */
2720 if (transfer_type
== 'l') {
2722 *thread_list
= NULL
;
2728 static int gdb_query_packet(struct connection
*connection
,
2729 char const *packet
, int packet_size
)
2731 struct command_context
*cmd_ctx
= connection
->cmd_ctx
;
2732 struct gdb_connection
*gdb_connection
= connection
->priv
;
2733 struct target
*target
= get_target_from_connection(connection
);
2735 if (strncmp(packet
, "qRcmd,", 6) == 0) {
2736 if (packet_size
> 6) {
2738 cmd
= malloc((packet_size
- 6) / 2 + 1);
2739 size_t len
= unhexify((uint8_t *)cmd
, packet
+ 6, (packet_size
- 6) / 2);
2742 /* We want to print all debug output to GDB connection */
2743 gdb_connection
->output_flag
= GDB_OUTPUT_ALL
;
2744 target_call_timer_callbacks_now();
2745 /* some commands need to know the GDB connection, make note of current
2746 * GDB connection. */
2747 current_gdb_connection
= gdb_connection
;
2748 command_run_line(cmd_ctx
, cmd
);
2749 current_gdb_connection
= NULL
;
2750 target_call_timer_callbacks_now();
2751 gdb_connection
->output_flag
= GDB_OUTPUT_NO
;
2754 gdb_put_packet(connection
, "OK", 2);
2756 } else if (strncmp(packet
, "qCRC:", 5) == 0) {
2757 if (packet_size
> 5) {
2762 target_addr_t addr
= 0;
2765 /* skip command character */
2768 addr
= strtoull(packet
, &separator
, 16);
2770 if (*separator
!= ',') {
2771 LOG_ERROR("incomplete read memory packet received, dropping connection");
2772 return ERROR_SERVER_REMOTE_CLOSED
;
2775 len
= strtoul(separator
+ 1, NULL
, 16);
2777 retval
= target_checksum_memory(target
, addr
, len
, &checksum
);
2779 if (retval
== ERROR_OK
) {
2780 snprintf(gdb_reply
, 10, "C%8.8" PRIx32
"", checksum
);
2781 gdb_put_packet(connection
, gdb_reply
, 9);
2783 retval
= gdb_error(connection
, retval
);
2784 if (retval
!= ERROR_OK
)
2790 } else if (strncmp(packet
, "qSupported", 10) == 0) {
2791 /* we currently support packet size and qXfer:memory-map:read (if enabled)
2792 * qXfer:features:read is supported for some targets */
2793 int retval
= ERROR_OK
;
2794 char *buffer
= NULL
;
2797 int gdb_target_desc_supported
= 0;
2799 /* we need to test that the target supports target descriptions */
2800 retval
= gdb_target_description_supported(target
, &gdb_target_desc_supported
);
2801 if (retval
!= ERROR_OK
) {
2802 LOG_INFO("Failed detecting Target Description Support, disabling");
2803 gdb_target_desc_supported
= 0;
2806 /* support may be disabled globally */
2807 if (gdb_use_target_description
== 0) {
2808 if (gdb_target_desc_supported
)
2809 LOG_WARNING("Target Descriptions Supported, but disabled");
2810 gdb_target_desc_supported
= 0;
2817 "PacketSize=%x;qXfer:memory-map:read%c;qXfer:features:read%c;qXfer:threads:read+;QStartNoAckMode+;vContSupported+",
2819 ((gdb_use_memory_map
== 1) && (flash_get_bank_count() > 0)) ? '+' : '-',
2820 (gdb_target_desc_supported
== 1) ? '+' : '-');
2822 if (retval
!= ERROR_OK
) {
2823 gdb_send_error(connection
, 01);
2827 gdb_put_packet(connection
, buffer
, strlen(buffer
));
2831 } else if ((strncmp(packet
, "qXfer:memory-map:read::", 23) == 0)
2832 && (flash_get_bank_count() > 0))
2833 return gdb_memory_map(connection
, packet
, packet_size
);
2834 else if (strncmp(packet
, "qXfer:features:read:", 20) == 0) {
2836 int retval
= ERROR_OK
;
2839 unsigned int length
;
2841 /* skip command character */
2844 if (decode_xfer_read(packet
, NULL
, &offset
, &length
) < 0) {
2845 gdb_send_error(connection
, 01);
2849 /* Target should prepare correct target description for annex.
2850 * The first character of returned xml is 'm' or 'l'. 'm' for
2851 * there are *more* chunks to transfer. 'l' for it is the *last*
2852 * chunk of target description.
2854 retval
= gdb_get_target_description_chunk(target
, &gdb_connection
->target_desc
,
2855 &xml
, offset
, length
);
2856 if (retval
!= ERROR_OK
) {
2857 gdb_error(connection
, retval
);
2861 gdb_put_packet(connection
, xml
, strlen(xml
));
2865 } else if (strncmp(packet
, "qXfer:threads:read:", 19) == 0) {
2867 int retval
= ERROR_OK
;
2870 unsigned int length
;
2872 /* skip command character */
2875 if (decode_xfer_read(packet
, NULL
, &offset
, &length
) < 0) {
2876 gdb_send_error(connection
, 01);
2880 /* Target should prepare correct thread list for annex.
2881 * The first character of returned xml is 'm' or 'l'. 'm' for
2882 * there are *more* chunks to transfer. 'l' for it is the *last*
2883 * chunk of target description.
2885 retval
= gdb_get_thread_list_chunk(target
, &gdb_connection
->thread_list
,
2886 &xml
, offset
, length
);
2887 if (retval
!= ERROR_OK
) {
2888 gdb_error(connection
, retval
);
2892 gdb_put_packet(connection
, xml
, strlen(xml
));
2896 } else if (strncmp(packet
, "QStartNoAckMode", 15) == 0) {
2897 gdb_connection
->noack_mode
= 1;
2898 gdb_put_packet(connection
, "OK", 2);
2902 gdb_put_packet(connection
, "", 0);
2906 static bool gdb_handle_vcont_packet(struct connection
*connection
, const char *packet
, int packet_size
)
2908 struct gdb_connection
*gdb_connection
= connection
->priv
;
2909 struct target
*target
= get_target_from_connection(connection
);
2910 const char *parse
= packet
;
2913 /* query for vCont supported */
2914 if (parse
[0] == '?') {
2915 if (target
->type
->step
) {
2916 /* gdb doesn't accept c without C and s without S */
2917 gdb_put_packet(connection
, "vCont;c;C;s;S", 13);
2923 if (parse
[0] == ';') {
2928 /* simple case, a continue packet */
2929 if (parse
[0] == 'c') {
2930 gdb_running_type
= 'c';
2931 LOG_DEBUG("target %s continue", target_name(target
));
2932 gdb_connection
->output_flag
= GDB_OUTPUT_ALL
;
2933 retval
= target_resume(target
, 1, 0, 0, 0);
2934 if (retval
== ERROR_TARGET_NOT_HALTED
)
2935 LOG_INFO("target %s was not halted when resume was requested", target_name(target
));
2937 /* poll target in an attempt to make its internal state consistent */
2938 if (retval
!= ERROR_OK
) {
2939 retval
= target_poll(target
);
2940 if (retval
!= ERROR_OK
)
2941 LOG_DEBUG("error polling target %s after failed resume", target_name(target
));
2945 * We don't report errors to gdb here, move frontend_state to
2946 * TARGET_RUNNING to stay in sync with gdb's expectation of the
2949 gdb_connection
->frontend_state
= TARGET_RUNNING
;
2950 target_call_event_callbacks(target
, TARGET_EVENT_GDB_START
);
2955 /* single-step or step-over-breakpoint */
2956 if (parse
[0] == 's') {
2957 gdb_running_type
= 's';
2958 bool fake_step
= false;
2960 if (strncmp(parse
, "s:", 2) == 0) {
2961 struct target
*ct
= target
;
2969 thread_id
= strtoll(parse
, &endp
, 16);
2971 packet_size
-= endp
- parse
;
2976 /* FIXME: why is this necessary? rtos state should be up-to-date here already! */
2977 rtos_update_threads(target
);
2979 target
->rtos
->gdb_target_for_threadid(connection
, thread_id
, &ct
);
2982 * check if the thread to be stepped is the current rtos thread
2983 * if not, we must fake the step
2985 if (target
->rtos
->current_thread
!= thread_id
)
2989 if (parse
[0] == ';') {
2993 if (parse
[0] == 'c') {
2996 /* check if thread-id follows */
2997 if (parse
[0] == ':') {
3001 tid
= strtoll(parse
, &endp
, 16);
3002 if (tid
== thread_id
) {
3004 * Special case: only step a single thread (core),
3005 * keep the other threads halted. Currently, only
3006 * aarch64 target understands it. Other target types don't
3007 * care (nobody checks the actual value of 'current')
3008 * and it doesn't really matter. This deserves
3009 * a symbolic constant and a formal interface documentation
3012 LOG_DEBUG("request to step current core only");
3013 /* uncomment after checking that indeed other targets are safe */
3020 LOG_DEBUG("target %s single-step thread %"PRIx64
, target_name(ct
), thread_id
);
3021 gdb_connection
->output_flag
= GDB_OUTPUT_ALL
;
3022 target_call_event_callbacks(ct
, TARGET_EVENT_GDB_START
);
3025 * work around an annoying gdb behaviour: when the current thread
3026 * is changed in gdb, it assumes that the target can follow and also
3027 * make the thread current. This is an assumption that cannot hold
3028 * for a real target running a multi-threading OS. We just fake
3029 * the step to not trigger an internal error in gdb. See
3030 * https://sourceware.org/bugzilla/show_bug.cgi?id=22925 for details
3034 char sig_reply
[128];
3036 LOG_DEBUG("fake step thread %"PRIx64
, thread_id
);
3038 sig_reply_len
= snprintf(sig_reply
, sizeof(sig_reply
),
3039 "T05thread:%016"PRIx64
";", thread_id
);
3041 gdb_put_packet(connection
, sig_reply
, sig_reply_len
);
3042 gdb_connection
->output_flag
= GDB_OUTPUT_NO
;
3047 /* support for gdb_sync command */
3048 if (gdb_connection
->sync
) {
3049 gdb_connection
->sync
= false;
3050 if (ct
->state
== TARGET_HALTED
) {
3051 LOG_DEBUG("stepi ignored. GDB will now fetch the register state "
3052 "from the target.");
3053 gdb_sig_halted(connection
);
3054 gdb_connection
->output_flag
= GDB_OUTPUT_NO
;
3056 gdb_connection
->frontend_state
= TARGET_RUNNING
;
3060 retval
= target_step(ct
, current_pc
, 0, 0);
3061 if (retval
== ERROR_TARGET_NOT_HALTED
)
3062 LOG_INFO("target %s was not halted when step was requested", target_name(ct
));
3064 /* if step was successful send a reply back to gdb */
3065 if (retval
== ERROR_OK
) {
3066 retval
= target_poll(ct
);
3067 if (retval
!= ERROR_OK
)
3068 LOG_DEBUG("error polling target %s after successful step", target_name(ct
));
3069 /* send back signal information */
3070 gdb_signal_reply(ct
, connection
);
3071 /* stop forwarding log packets! */
3072 gdb_connection
->output_flag
= GDB_OUTPUT_NO
;
3074 gdb_connection
->frontend_state
= TARGET_RUNNING
;
3076 LOG_ERROR("Unknown vCont packet");
3085 static char *next_hex_encoded_field(const char **str
, char sep
)
3088 const char *hex
= *str
;
3092 const char *end
= strchr(hex
, sep
);
3094 hexlen
= strlen(hex
);
3097 *str
= hex
+ hexlen
+ 1;
3099 if (hexlen
% 2 != 0) {
3100 /* Malformed hex data */
3104 size_t count
= hexlen
/ 2;
3105 char *decoded
= malloc(count
+ 1);
3109 size_t converted
= unhexify((void *)decoded
, hex
, count
);
3110 if (converted
!= count
) {
3115 decoded
[count
] = '\0';
3119 /* handle extended restart packet */
3120 static void gdb_restart_inferior(struct connection
*connection
, const char *packet
, int packet_size
)
3122 struct gdb_connection
*gdb_con
= connection
->priv
;
3123 struct target
*target
= get_target_from_connection(connection
);
3125 breakpoint_clear_target(target
);
3126 watchpoint_clear_target(target
);
3127 command_run_linef(connection
->cmd_ctx
, "ocd_gdb_restart %s",
3128 target_name(target
));
3129 /* set connection as attached after reset */
3130 gdb_con
->attached
= true;
3131 /* info rtos parts */
3132 gdb_thread_packet(connection
, packet
, packet_size
);
3135 static bool gdb_handle_vrun_packet(struct connection
*connection
, const char *packet
, int packet_size
)
3137 struct target
*target
= get_target_from_connection(connection
);
3138 const char *parse
= packet
;
3143 if (parse
[0] != ';')
3147 /* Skip first field "filename"; don't know what to do with it. */
3148 free(next_hex_encoded_field(&parse
, ';'));
3150 char *cmdline
= next_hex_encoded_field(&parse
, ';');
3152 char *arg
= next_hex_encoded_field(&parse
, ';');
3155 char *new_cmdline
= alloc_printf("%s %s", cmdline
, arg
);
3158 cmdline
= new_cmdline
;
3162 if (target
->semihosting
) {
3163 LOG_INFO("GDB set inferior command line to '%s'", cmdline
);
3164 free(target
->semihosting
->cmdline
);
3165 target
->semihosting
->cmdline
= cmdline
;
3167 LOG_INFO("GDB set inferior command line to '%s' but semihosting is unavailable", cmdline
);
3172 gdb_restart_inferior(connection
, packet
, packet_size
);
3173 gdb_put_packet(connection
, "S00", 3);
3177 static int gdb_v_packet(struct connection
*connection
,
3178 char const *packet
, int packet_size
)
3180 struct gdb_connection
*gdb_connection
= connection
->priv
;
3183 struct target
*target
= get_target_from_connection(connection
);
3185 if (strncmp(packet
, "vCont", 5) == 0) {
3191 handled
= gdb_handle_vcont_packet(connection
, packet
, packet_size
);
3193 gdb_put_packet(connection
, "", 0);
3198 if (strncmp(packet
, "vRun", 4) == 0) {
3201 handled
= gdb_handle_vrun_packet(connection
, packet
, packet_size
);
3203 gdb_put_packet(connection
, "", 0);
3208 /* if flash programming disabled - send a empty reply */
3210 if (gdb_flash_program
== 0) {
3211 gdb_put_packet(connection
, "", 0);
3215 if (strncmp(packet
, "vFlashErase:", 12) == 0) {
3217 unsigned long length
;
3219 char const *parse
= packet
+ 12;
3220 if (*parse
== '\0') {
3221 LOG_ERROR("incomplete vFlashErase packet received, dropping connection");
3222 return ERROR_SERVER_REMOTE_CLOSED
;
3225 addr
= strtoul(parse
, (char **)&parse
, 16);
3227 if (*(parse
++) != ',' || *parse
== '\0') {
3228 LOG_ERROR("incomplete vFlashErase packet received, dropping connection");
3229 return ERROR_SERVER_REMOTE_CLOSED
;
3232 length
= strtoul(parse
, (char **)&parse
, 16);
3234 if (*parse
!= '\0') {
3235 LOG_ERROR("incomplete vFlashErase packet received, dropping connection");
3236 return ERROR_SERVER_REMOTE_CLOSED
;
3239 /* assume all sectors need erasing - stops any problems
3240 * when flash_write is called multiple times */
3243 /* perform any target specific operations before the erase */
3244 target_call_event_callbacks(target
,
3245 TARGET_EVENT_GDB_FLASH_ERASE_START
);
3247 /* vFlashErase:addr,length messages require region start and
3248 * end to be "block" aligned ... if padding is ever needed,
3249 * GDB will have become dangerously confused.
3251 result
= flash_erase_address_range(target
, false, addr
,
3254 /* perform any target specific operations after the erase */
3255 target_call_event_callbacks(target
,
3256 TARGET_EVENT_GDB_FLASH_ERASE_END
);
3259 if (result
!= ERROR_OK
) {
3260 /* GDB doesn't evaluate the actual error number returned,
3261 * treat a failed erase as an I/O error
3263 gdb_send_error(connection
, EIO
);
3264 LOG_ERROR("flash_erase returned %i", result
);
3266 gdb_put_packet(connection
, "OK", 2);
3271 if (strncmp(packet
, "vFlashWrite:", 12) == 0) {
3274 unsigned long length
;
3275 char const *parse
= packet
+ 12;
3277 if (*parse
== '\0') {
3278 LOG_ERROR("incomplete vFlashErase packet received, dropping connection");
3279 return ERROR_SERVER_REMOTE_CLOSED
;
3281 addr
= strtoul(parse
, (char **)&parse
, 16);
3282 if (*(parse
++) != ':') {
3283 LOG_ERROR("incomplete vFlashErase packet received, dropping connection");
3284 return ERROR_SERVER_REMOTE_CLOSED
;
3286 length
= packet_size
- (parse
- packet
);
3288 /* create a new image if there isn't already one */
3289 if (!gdb_connection
->vflash_image
) {
3290 gdb_connection
->vflash_image
= malloc(sizeof(struct image
));
3291 image_open(gdb_connection
->vflash_image
, "", "build");
3294 /* create new section with content from packet buffer */
3295 retval
= image_add_section(gdb_connection
->vflash_image
,
3296 addr
, length
, 0x0, (uint8_t const *)parse
);
3297 if (retval
!= ERROR_OK
)
3300 gdb_put_packet(connection
, "OK", 2);
3305 if (strncmp(packet
, "vFlashDone", 10) == 0) {
3308 /* process the flashing buffer. No need to erase as GDB
3309 * always issues a vFlashErase first. */
3310 target_call_event_callbacks(target
,
3311 TARGET_EVENT_GDB_FLASH_WRITE_START
);
3312 result
= flash_write(target
, gdb_connection
->vflash_image
,
3314 target_call_event_callbacks(target
,
3315 TARGET_EVENT_GDB_FLASH_WRITE_END
);
3316 if (result
!= ERROR_OK
) {
3317 if (result
== ERROR_FLASH_DST_OUT_OF_BANK
)
3318 gdb_put_packet(connection
, "E.memtype", 9);
3320 gdb_send_error(connection
, EIO
);
3322 LOG_DEBUG("wrote %u bytes from vFlash image to flash", (unsigned)written
);
3323 gdb_put_packet(connection
, "OK", 2);
3326 image_close(gdb_connection
->vflash_image
);
3327 free(gdb_connection
->vflash_image
);
3328 gdb_connection
->vflash_image
= NULL
;
3333 gdb_put_packet(connection
, "", 0);
3337 static int gdb_detach(struct connection
*connection
)
3340 * Only reply "OK" to GDB
3341 * it will close the connection and this will trigger a call to
3342 * gdb_connection_closed() that will in turn trigger the event
3343 * TARGET_EVENT_GDB_DETACH
3345 return gdb_put_packet(connection
, "OK", 2);
3348 /* The format of 'F' response packet is
3349 * Fretcode,errno,Ctrl-C flag;call-specific attachment
3351 static int gdb_fileio_response_packet(struct connection
*connection
,
3352 char const *packet
, int packet_size
)
3354 struct target
*target
= get_target_from_connection(connection
);
3356 char *parsing_point
;
3357 int fileio_retcode
= strtoul(packet
+ 1, &separator
, 16);
3358 int fileio_errno
= 0;
3359 bool fileio_ctrl_c
= false;
3364 if (*separator
== ',') {
3365 parsing_point
= separator
+ 1;
3366 fileio_errno
= strtoul(parsing_point
, &separator
, 16);
3367 if (*separator
== ',') {
3368 if (*(separator
+ 1) == 'C') {
3369 /* TODO: process ctrl-c */
3370 fileio_ctrl_c
= true;
3375 LOG_DEBUG("File-I/O response, retcode: 0x%x, errno: 0x%x, ctrl-c: %s",
3376 fileio_retcode
, fileio_errno
, fileio_ctrl_c
? "true" : "false");
3378 retval
= target_gdb_fileio_end(target
, fileio_retcode
, fileio_errno
, fileio_ctrl_c
);
3379 if (retval
!= ERROR_OK
)
3382 /* After File-I/O ends, keep continue or step */
3383 if (gdb_running_type
== 'c')
3384 retval
= target_resume(target
, 1, 0x0, 0, 0);
3385 else if (gdb_running_type
== 's')
3386 retval
= target_step(target
, 1, 0x0, 0);
3388 retval
= ERROR_FAIL
;
3390 if (retval
!= ERROR_OK
)
3396 static void gdb_log_callback(void *priv
, const char *file
, unsigned line
,
3397 const char *function
, const char *string
)
3399 struct connection
*connection
= priv
;
3400 struct gdb_connection
*gdb_con
= connection
->priv
;
3402 if (gdb_con
->output_flag
== GDB_OUTPUT_NO
)
3403 /* No out allowed */
3406 if (gdb_con
->busy
) {
3407 /* do not reply this using the O packet */
3411 gdb_output_con(connection
, string
);
3414 static void gdb_sig_halted(struct connection
*connection
)
3417 snprintf(sig_reply
, 4, "T%2.2x", 2);
3418 gdb_put_packet(connection
, sig_reply
, 3);
3421 static int gdb_input_inner(struct connection
*connection
)
3423 /* Do not allocate this on the stack */
3424 static char gdb_packet_buffer
[GDB_BUFFER_SIZE
+ 1]; /* Extra byte for null-termination */
3426 struct target
*target
;
3427 char const *packet
= gdb_packet_buffer
;
3430 struct gdb_connection
*gdb_con
= connection
->priv
;
3431 static bool warn_use_ext
;
3433 target
= get_target_from_connection(connection
);
3435 /* drain input buffer. If one of the packets fail, then an error
3436 * packet is replied, if applicable.
3438 * This loop will terminate and the error code is returned.
3440 * The calling fn will check if this error is something that
3441 * can be recovered from, or if the connection must be closed.
3443 * If the error is recoverable, this fn is called again to
3444 * drain the rest of the buffer.
3447 packet_size
= GDB_BUFFER_SIZE
;
3448 retval
= gdb_get_packet(connection
, gdb_packet_buffer
, &packet_size
);
3449 if (retval
!= ERROR_OK
)
3452 /* terminate with zero */
3453 gdb_packet_buffer
[packet_size
] = '\0';
3455 gdb_log_incoming_packet(gdb_packet_buffer
);
3457 if (packet_size
> 0) {
3459 switch (packet
[0]) {
3460 case 'T': /* Is thread alive? */
3461 gdb_thread_packet(connection
, packet
, packet_size
);
3463 case 'H': /* Set current thread ( 'c' for step and continue,
3464 * 'g' for all other operations ) */
3465 gdb_thread_packet(connection
, packet
, packet_size
);
3469 retval
= gdb_thread_packet(connection
, packet
, packet_size
);
3470 if (retval
== GDB_THREAD_PACKET_NOT_CONSUMED
)
3471 retval
= gdb_query_packet(connection
, packet
, packet_size
);
3474 retval
= gdb_get_registers_packet(connection
, packet
, packet_size
);
3477 retval
= gdb_set_registers_packet(connection
, packet
, packet_size
);
3480 retval
= gdb_get_register_packet(connection
, packet
, packet_size
);
3483 retval
= gdb_set_register_packet(connection
, packet
, packet_size
);
3486 retval
= gdb_read_memory_packet(connection
, packet
, packet_size
);
3489 retval
= gdb_write_memory_packet(connection
, packet
, packet_size
);
3493 retval
= gdb_breakpoint_watchpoint_packet(connection
, packet
, packet_size
);
3496 gdb_last_signal_packet(connection
, packet
, packet_size
);
3497 /* '?' is sent after the eventual '!' */
3498 if (!warn_use_ext
&& !gdb_con
->extended_protocol
) {
3499 warn_use_ext
= true;
3500 LOG_WARNING("Prefer GDB command \"target extended-remote :%s\" instead of \"target remote :%s\"",
3501 connection
->service
->port
, connection
->service
->port
);
3507 gdb_thread_packet(connection
, packet
, packet_size
);
3508 gdb_con
->output_flag
= GDB_OUTPUT_ALL
;
3510 if (gdb_con
->mem_write_error
) {
3511 LOG_ERROR("Memory write failure!");
3513 /* now that we have reported the memory write error,
3514 * we can clear the condition */
3515 gdb_con
->mem_write_error
= false;
3518 bool nostep
= false;
3519 bool already_running
= false;
3520 if (target
->state
== TARGET_RUNNING
) {
3521 LOG_WARNING("WARNING! The target is already running. "
3522 "All changes GDB did to registers will be discarded! "
3523 "Waiting for target to halt.");
3524 already_running
= true;
3525 } else if (target
->state
!= TARGET_HALTED
) {
3526 LOG_WARNING("The target is not in the halted nor running stated, "
3527 "stepi/continue ignored.");
3529 } else if ((packet
[0] == 's') && gdb_con
->sync
) {
3530 /* Hmm..... when you issue a continue in GDB, then a "stepi" is
3531 * sent by GDB first to OpenOCD, thus defeating the check to
3532 * make only the single stepping have the sync feature...
3535 LOG_DEBUG("stepi ignored. GDB will now fetch the register state "
3536 "from the target.");
3538 gdb_con
->sync
= false;
3540 if (!already_running
&& nostep
) {
3541 /* Either the target isn't in the halted state, then we can't
3542 * step/continue. This might be early setup, etc.
3544 * Or we want to allow GDB to pick up a fresh set of
3545 * register values without modifying the target state.
3548 gdb_sig_halted(connection
);
3550 /* stop forwarding log packets! */
3551 gdb_con
->output_flag
= GDB_OUTPUT_NO
;
3553 /* We're running/stepping, in which case we can
3554 * forward log output until the target is halted
3556 gdb_con
->frontend_state
= TARGET_RUNNING
;
3557 target_call_event_callbacks(target
, TARGET_EVENT_GDB_START
);
3559 if (!already_running
) {
3560 /* Here we don't want packet processing to stop even if this fails,
3561 * so we use a local variable instead of retval. */
3562 retval
= gdb_step_continue_packet(connection
, packet
, packet_size
);
3563 if (retval
!= ERROR_OK
) {
3564 /* we'll never receive a halted
3565 * condition... issue a false one..
3567 gdb_frontend_halted(target
, connection
);
3574 retval
= gdb_v_packet(connection
, packet
, packet_size
);
3577 retval
= gdb_detach(connection
);
3580 retval
= gdb_write_memory_binary_packet(connection
, packet
, packet_size
);
3581 if (retval
!= ERROR_OK
)
3585 if (gdb_con
->extended_protocol
) {
3586 gdb_con
->attached
= false;
3589 gdb_put_packet(connection
, "OK", 2);
3590 return ERROR_SERVER_REMOTE_CLOSED
;
3592 /* handle extended remote protocol */
3593 gdb_con
->extended_protocol
= true;
3594 gdb_put_packet(connection
, "OK", 2);
3597 /* handle extended restart packet */
3598 gdb_restart_inferior(connection
, packet
, packet_size
);
3602 /* packet supported only by smp target i.e cortex_a.c*/
3603 /* handle smp packet replying coreid played to gbd */
3604 gdb_read_smp_packet(connection
, packet
, packet_size
);
3608 /* packet supported only by smp target i.e cortex_a.c */
3609 /* handle smp packet setting coreid to be played at next
3611 gdb_write_smp_packet(connection
, packet
, packet_size
);
3615 /* File-I/O extension */
3616 /* After gdb uses host-side syscall to complete target file
3617 * I/O, gdb sends host-side syscall return value to target
3619 * The format of 'F' response packet is
3620 * Fretcode,errno,Ctrl-C flag;call-specific attachment
3622 gdb_con
->frontend_state
= TARGET_RUNNING
;
3623 gdb_con
->output_flag
= GDB_OUTPUT_ALL
;
3624 gdb_fileio_response_packet(connection
, packet
, packet_size
);
3628 /* ignore unknown packets */
3629 LOG_DEBUG("ignoring 0x%2.2x packet", packet
[0]);
3630 gdb_put_packet(connection
, "", 0);
3634 /* if a packet handler returned an error, exit input loop */
3635 if (retval
!= ERROR_OK
)
3639 if (gdb_con
->ctrl_c
) {
3640 if (target
->state
== TARGET_RUNNING
) {
3641 struct target
*t
= target
;
3643 target
->rtos
->gdb_target_for_threadid(connection
, target
->rtos
->current_threadid
, &t
);
3644 retval
= target_halt(t
);
3645 if (retval
== ERROR_OK
)
3646 retval
= target_poll(t
);
3647 if (retval
!= ERROR_OK
)
3648 target_call_event_callbacks(target
, TARGET_EVENT_GDB_HALT
);
3649 gdb_con
->ctrl_c
= false;
3651 LOG_INFO("The target is not running when halt was requested, stopping GDB.");
3652 target_call_event_callbacks(target
, TARGET_EVENT_GDB_HALT
);
3656 } while (gdb_con
->buf_cnt
> 0);
3661 static int gdb_input(struct connection
*connection
)
3663 int retval
= gdb_input_inner(connection
);
3664 struct gdb_connection
*gdb_con
= connection
->priv
;
3665 if (retval
== ERROR_SERVER_REMOTE_CLOSED
)
3668 /* logging does not propagate the error, yet can set the gdb_con->closed flag */
3669 if (gdb_con
->closed
)
3670 return ERROR_SERVER_REMOTE_CLOSED
;
3672 /* we'll recover from any other errors(e.g. temporary timeouts, etc.) */
3676 static const struct service_driver gdb_service_driver
= {
3678 .new_connection_during_keep_alive_handler
= NULL
,
3679 .new_connection_handler
= gdb_new_connection
,
3680 .input_handler
= gdb_input
,
3681 .connection_closed_handler
= gdb_connection_closed
,
3682 .keep_client_alive_handler
= NULL
,
3685 static int gdb_target_start(struct target
*target
, const char *port
)
3687 struct gdb_service
*gdb_service
;
3689 gdb_service
= malloc(sizeof(struct gdb_service
));
3694 LOG_INFO("starting gdb server for %s on %s", target_name(target
), port
);
3696 gdb_service
->target
= target
;
3697 gdb_service
->core
[0] = -1;
3698 gdb_service
->core
[1] = -1;
3699 target
->gdb_service
= gdb_service
;
3701 ret
= add_service(&gdb_service_driver
, port
, target
->gdb_max_connections
, gdb_service
);
3702 /* initialize all targets gdb service with the same pointer */
3704 struct target_list
*head
;
3705 foreach_smp_target(head
, target
->smp_targets
) {
3706 struct target
*curr
= head
->target
;
3708 curr
->gdb_service
= gdb_service
;
3714 static int gdb_target_add_one(struct target
*target
)
3716 /* one gdb instance per smp list */
3717 if ((target
->smp
) && (target
->gdb_service
))
3720 /* skip targets that cannot handle a gdb connections (e.g. mem_ap) */
3721 if (!target_supports_gdb_connection(target
)) {
3722 LOG_DEBUG("skip gdb server for target %s", target_name(target
));
3726 if (target
->gdb_port_override
) {
3727 if (strcmp(target
->gdb_port_override
, "disabled") == 0) {
3728 LOG_INFO("gdb port disabled");
3731 return gdb_target_start(target
, target
->gdb_port_override
);
3734 if (strcmp(gdb_port
, "disabled") == 0) {
3735 LOG_INFO("gdb port disabled");
3739 int retval
= gdb_target_start(target
, gdb_port_next
);
3740 if (retval
== ERROR_OK
) {
3741 /* save the port number so can be queried with
3742 * $target_name cget -gdb-port
3744 target
->gdb_port_override
= strdup(gdb_port_next
);
3747 /* If we can parse the port number
3748 * then we increment the port number for the next target.
3751 portnumber
= strtol(gdb_port_next
, &end
, 0);
3753 if (parse_long(gdb_port_next
, &portnumber
) == ERROR_OK
) {
3754 free(gdb_port_next
);
3756 gdb_port_next
= alloc_printf("%ld", portnumber
+1);
3758 /* Don't increment if gdb_port is 0, since we're just
3759 * trying to allocate an unused port. */
3760 gdb_port_next
= strdup("0");
3768 int gdb_target_add_all(struct target
*target
)
3771 LOG_WARNING("gdb services need one or more targets defined");
3776 int retval
= gdb_target_add_one(target
);
3777 if (retval
!= ERROR_OK
)
3780 target
= target
->next
;
3786 COMMAND_HANDLER(handle_gdb_sync_command
)
3789 return ERROR_COMMAND_SYNTAX_ERROR
;
3791 if (!current_gdb_connection
) {
3793 "gdb_sync command can only be run from within gdb using \"monitor gdb_sync\"");
3797 current_gdb_connection
->sync
= true;
3802 /* daemon configuration command gdb_port */
3803 COMMAND_HANDLER(handle_gdb_port_command
)
3805 int retval
= CALL_COMMAND_HANDLER(server_pipe_command
, &gdb_port
);
3806 if (retval
== ERROR_OK
) {
3807 free(gdb_port_next
);
3808 gdb_port_next
= strdup(gdb_port
);
3813 COMMAND_HANDLER(handle_gdb_memory_map_command
)
3816 return ERROR_COMMAND_SYNTAX_ERROR
;
3818 COMMAND_PARSE_ENABLE(CMD_ARGV
[0], gdb_use_memory_map
);
3822 COMMAND_HANDLER(handle_gdb_flash_program_command
)
3825 return ERROR_COMMAND_SYNTAX_ERROR
;
3827 COMMAND_PARSE_ENABLE(CMD_ARGV
[0], gdb_flash_program
);
3831 COMMAND_HANDLER(handle_gdb_report_data_abort_command
)
3834 return ERROR_COMMAND_SYNTAX_ERROR
;
3836 COMMAND_PARSE_ENABLE(CMD_ARGV
[0], gdb_report_data_abort
);
3840 COMMAND_HANDLER(handle_gdb_report_register_access_error
)
3843 return ERROR_COMMAND_SYNTAX_ERROR
;
3845 COMMAND_PARSE_ENABLE(CMD_ARGV
[0], gdb_report_register_access_error
);
3849 /* gdb_breakpoint_override */
3850 COMMAND_HANDLER(handle_gdb_breakpoint_override_command
)
3852 if (CMD_ARGC
== 0) {
3854 } else if (CMD_ARGC
== 1) {
3855 gdb_breakpoint_override
= 1;
3856 if (strcmp(CMD_ARGV
[0], "hard") == 0)
3857 gdb_breakpoint_override_type
= BKPT_HARD
;
3858 else if (strcmp(CMD_ARGV
[0], "soft") == 0)
3859 gdb_breakpoint_override_type
= BKPT_SOFT
;
3860 else if (strcmp(CMD_ARGV
[0], "disable") == 0)
3861 gdb_breakpoint_override
= 0;
3863 return ERROR_COMMAND_SYNTAX_ERROR
;
3864 if (gdb_breakpoint_override
)
3865 LOG_USER("force %s breakpoints",
3866 (gdb_breakpoint_override_type
== BKPT_HARD
) ? "hard" : "soft");
3868 LOG_USER("breakpoint type is not overridden");
3873 COMMAND_HANDLER(handle_gdb_target_description_command
)
3876 return ERROR_COMMAND_SYNTAX_ERROR
;
3878 COMMAND_PARSE_ENABLE(CMD_ARGV
[0], gdb_use_target_description
);
3882 COMMAND_HANDLER(handle_gdb_save_tdesc_command
)
3885 uint32_t tdesc_length
;
3886 struct target
*target
= get_current_target(CMD_CTX
);
3888 int retval
= gdb_generate_target_description(target
, &tdesc
);
3889 if (retval
!= ERROR_OK
) {
3890 LOG_ERROR("Unable to Generate Target Description");
3894 tdesc_length
= strlen(tdesc
);
3896 struct fileio
*fileio
;
3897 size_t size_written
;
3899 char *tdesc_filename
= alloc_printf("%s.xml", target_type_name(target
));
3900 if (!tdesc_filename
) {
3901 retval
= ERROR_FAIL
;
3905 retval
= fileio_open(&fileio
, tdesc_filename
, FILEIO_WRITE
, FILEIO_TEXT
);
3907 if (retval
!= ERROR_OK
) {
3908 LOG_ERROR("Can't open %s for writing", tdesc_filename
);
3912 retval
= fileio_write(fileio
, tdesc_length
, tdesc
, &size_written
);
3914 fileio_close(fileio
);
3916 if (retval
!= ERROR_OK
)
3917 LOG_ERROR("Error while writing the tdesc file");
3920 free(tdesc_filename
);
3926 static const struct command_registration gdb_command_handlers
[] = {
3929 .handler
= handle_gdb_sync_command
,
3930 .mode
= COMMAND_ANY
,
3931 .help
= "next stepi will return immediately allowing "
3932 "GDB to fetch register state without affecting "
3938 .handler
= handle_gdb_port_command
,
3939 .mode
= COMMAND_CONFIG
,
3940 .help
= "Normally gdb listens to a TCP/IP port. Each subsequent GDB "
3941 "server listens for the next port number after the "
3942 "base port number specified. "
3943 "No arguments reports GDB port. \"pipe\" means listen to stdin "
3944 "output to stdout, an integer is base port number, \"disabled\" disables "
3945 "port. Any other string is are interpreted as named pipe to listen to. "
3946 "Output pipe is the same name as input pipe, but with 'o' appended.",
3947 .usage
= "[port_num]",
3950 .name
= "gdb_memory_map",
3951 .handler
= handle_gdb_memory_map_command
,
3952 .mode
= COMMAND_CONFIG
,
3953 .help
= "enable or disable memory map",
3954 .usage
= "('enable'|'disable')"
3957 .name
= "gdb_flash_program",
3958 .handler
= handle_gdb_flash_program_command
,
3959 .mode
= COMMAND_CONFIG
,
3960 .help
= "enable or disable flash program",
3961 .usage
= "('enable'|'disable')"
3964 .name
= "gdb_report_data_abort",
3965 .handler
= handle_gdb_report_data_abort_command
,
3966 .mode
= COMMAND_CONFIG
,
3967 .help
= "enable or disable reporting data aborts",
3968 .usage
= "('enable'|'disable')"
3971 .name
= "gdb_report_register_access_error",
3972 .handler
= handle_gdb_report_register_access_error
,
3973 .mode
= COMMAND_CONFIG
,
3974 .help
= "enable or disable reporting register access errors",
3975 .usage
= "('enable'|'disable')"
3978 .name
= "gdb_breakpoint_override",
3979 .handler
= handle_gdb_breakpoint_override_command
,
3980 .mode
= COMMAND_ANY
,
3981 .help
= "Display or specify type of breakpoint "
3982 "to be used by gdb 'break' commands.",
3983 .usage
= "('hard'|'soft'|'disable')"
3986 .name
= "gdb_target_description",
3987 .handler
= handle_gdb_target_description_command
,
3988 .mode
= COMMAND_CONFIG
,
3989 .help
= "enable or disable target description",
3990 .usage
= "('enable'|'disable')"
3993 .name
= "gdb_save_tdesc",
3994 .handler
= handle_gdb_save_tdesc_command
,
3995 .mode
= COMMAND_EXEC
,
3996 .help
= "Save the target description file",
3999 COMMAND_REGISTRATION_DONE
4002 int gdb_register_commands(struct command_context
*cmd_ctx
)
4004 gdb_port
= strdup("3333");
4005 gdb_port_next
= strdup("3333");
4006 return register_commands(cmd_ctx
, NULL
, gdb_command_handlers
);
4009 void gdb_service_free(void)
4012 free(gdb_port_next
);