1 /***************************************************************************
2 * Copyright (C) 2007 by Dominic Rath *
3 * Dominic.Rath@gmx.de *
5 * Copyright (C) 2007,2008 Øyvind Harboe *
6 * oyvind.harboe@zylin.com *
8 * Copyright (C) 2008 by Spencer Oliver *
9 * spen@spen-soft.co.uk *
11 * This program is free software; you can redistribute it and/or modify *
12 * it under the terms of the GNU General Public License as published by *
13 * the Free Software Foundation; either version 2 of the License, or *
14 * (at your option) any later version. *
16 * This program is distributed in the hope that it will be useful, *
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
19 * GNU General Public License for more details. *
21 * You should have received a copy of the GNU General Public License *
22 * along with this program. If not, see <http://www.gnu.org/licenses/>. *
23 ***************************************************************************/
29 #include <helper/log.h>
30 #include <helper/binarybuffer.h>
33 #include "target_request.h"
34 #include "target_type.h"
37 static bool got_message
;
39 bool target_got_message(void)
46 static int charmsg_mode
;
48 static int target_asciimsg(struct target
*target
, uint32_t length
)
50 char *msg
= malloc(DIV_ROUND_UP(length
+ 1, 4) * 4);
51 struct debug_msg_receiver
*c
= target
->dbgmsg
;
53 target
->type
->target_request_data(target
, DIV_ROUND_UP(length
, 4), (uint8_t *)msg
);
59 command_output_text(c
->cmd_ctx
, msg
);
66 static int target_charmsg(struct target
*target
, uint8_t msg
)
68 LOG_USER_N("%c", msg
);
73 static int target_hexmsg(struct target
*target
, int size
, uint32_t length
)
75 uint8_t *data
= malloc(DIV_ROUND_UP(length
* size
, 4) * 4);
78 struct debug_msg_receiver
*c
= target
->dbgmsg
;
81 LOG_DEBUG("size: %i, length: %i", (int)size
, (int)length
);
83 target
->type
->target_request_data(target
, DIV_ROUND_UP(length
* size
, 4), (uint8_t *)data
);
86 for (i
= 0; i
< length
; i
++) {
89 line_len
+= snprintf(line
+ line_len
, 128 - line_len
, "%8.8" PRIx32
" ", le_to_h_u32(data
+ (4*i
)));
92 line_len
+= snprintf(line
+ line_len
, 128 - line_len
, "%4.4x ", le_to_h_u16(data
+ (2*i
)));
95 line_len
+= snprintf(line
+ line_len
, 128 - line_len
, "%2.2x ", data
[i
]);
99 if ((i
%8 == 7) || (i
== length
- 1)) {
100 LOG_DEBUG("%s", line
);
103 command_output_text(c
->cmd_ctx
, line
);
116 /* handle requests from the target received by a target specific
117 * side-band channel (e.g. ARM7/9 DCC)
119 int target_request(struct target
*target
, uint32_t request
)
121 target_req_cmd_t target_req_cmd
= request
& 0xff;
123 assert(target
->type
->target_request_data
);
125 /* Record that we got a target message for back-off algorithm */
129 target_charmsg(target
, target_req_cmd
);
133 switch (target_req_cmd
) {
134 case TARGET_REQ_TRACEMSG
:
135 trace_point(target
, (request
& 0xffffff00) >> 8);
137 case TARGET_REQ_DEBUGMSG
:
138 if (((request
& 0xff00) >> 8) == 0)
139 target_asciimsg(target
, (request
& 0xffff0000) >> 16);
141 target_hexmsg(target
, (request
& 0xff00) >> 8, (request
& 0xffff0000) >> 16);
143 case TARGET_REQ_DEBUGCHAR
:
144 target_charmsg(target
, (request
& 0x00ff0000) >> 16);
146 /* case TARGET_REQ_SEMIHOSTING:
150 LOG_ERROR("unknown target request: %2.2x", target_req_cmd
);
157 static int add_debug_msg_receiver(struct command_context
*cmd_ctx
, struct target
*target
)
159 struct debug_msg_receiver
**p
= &target
->dbgmsg
;
162 return ERROR_COMMAND_SYNTAX_ERROR
;
164 /* see if there's already a list */
166 /* find end of linked list */
172 /* add new debug message receiver */
173 (*p
) = malloc(sizeof(struct debug_msg_receiver
));
174 (*p
)->cmd_ctx
= cmd_ctx
;
177 /* enable callback */
178 target
->dbg_msg_enabled
= 1;
183 static struct debug_msg_receiver
*find_debug_msg_receiver(struct command_context
*cmd_ctx
,
184 struct target
*target
)
186 int do_all_targets
= 0;
188 /* if no target has been specified search all of them */
189 if (target
== NULL
) {
190 /* if no targets haven been specified */
191 if (all_targets
== NULL
)
194 target
= all_targets
;
198 /* so we target != null */
199 struct debug_msg_receiver
**p
= &target
->dbgmsg
;
202 if ((*p
)->cmd_ctx
== cmd_ctx
)
207 target
= target
->next
;
208 } while (target
&& do_all_targets
);
213 int delete_debug_msg_receiver(struct command_context
*cmd_ctx
, struct target
*target
)
215 struct debug_msg_receiver
**p
;
216 struct debug_msg_receiver
*c
;
217 int do_all_targets
= 0;
219 /* if no target has been specified search all of them */
220 if (target
== NULL
) {
221 /* if no targets haven been specified */
222 if (all_targets
== NULL
)
225 target
= all_targets
;
233 struct debug_msg_receiver
*next
= c
->next
;
234 if (c
->cmd_ctx
== cmd_ctx
) {
238 /* disable callback */
239 target
->dbg_msg_enabled
= 0;
247 target
= target
->next
;
248 } while (target
&& do_all_targets
);
253 COMMAND_HANDLER(handle_target_request_debugmsgs_command
)
255 struct target
*target
= get_current_target(CMD_CTX
);
259 if (target
->type
->target_request_data
== NULL
) {
260 LOG_ERROR("Target %s does not support target requests", target_name(target
));
264 /* see if reciever is already registered */
265 if (find_debug_msg_receiver(CMD_CTX
, target
) != NULL
)
269 if (!strcmp(CMD_ARGV
[0], "enable") || !strcmp(CMD_ARGV
[0], "charmsg")) {
270 /* don't register if this command context is already receiving */
273 add_debug_msg_receiver(CMD_CTX
, target
);
275 charmsg_mode
= !strcmp(CMD_ARGV
[0], "charmsg");
276 } else if (!strcmp(CMD_ARGV
[0], "disable")) {
277 /* no need to delete a receiver if none is registered */
280 delete_debug_msg_receiver(CMD_CTX
, target
);
283 return ERROR_COMMAND_SYNTAX_ERROR
;
286 command_print(CMD
, "receiving debug messages from current target %s",
287 (receiving
) ? (charmsg_mode
? "charmsg" : "enabled") : "disabled");
291 static const struct command_registration target_req_exec_command_handlers
[] = {
294 .handler
= handle_target_request_debugmsgs_command
,
295 .mode
= COMMAND_EXEC
,
296 .help
= "display and/or modify reception of debug messages from target",
297 .usage
= "['enable'|'charmsg'|'disable']",
299 COMMAND_REGISTRATION_DONE
301 static const struct command_registration target_req_command_handlers
[] = {
303 .name
= "target_request",
305 .help
= "target request command group",
307 .chain
= target_req_exec_command_handlers
,
309 COMMAND_REGISTRATION_DONE
312 int target_request_register_commands(struct command_context
*cmd_ctx
)
314 return register_commands(cmd_ctx
, NULL
, target_req_command_handlers
);
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