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_print(c->cmd_ctx, "%s", 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_print(c->cmd_ctx, "%s", 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_CTX, "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);