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, write to the *
23 * Free Software Foundation, Inc., *
24 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
25 ***************************************************************************/
30 #include <helper/log.h>
31 #include <helper/binarybuffer.h>
34 #include "target_request.h"
35 #include "target_type.h"
39 static bool got_message = false;
41 bool target_got_message(void)
48 static int charmsg_mode = 0;
50 static int target_asciimsg(struct target *target, uint32_t length)
52 char *msg = malloc(DIV_ROUND_UP(length + 1, 4) * 4);
53 struct debug_msg_receiver *c = target->dbgmsg;
55 target->type->target_request_data(target, DIV_ROUND_UP(length, 4), (uint8_t*)msg);
62 command_print(c->cmd_ctx, "%s", msg);
69 static int target_charmsg(struct target *target, uint8_t msg)
71 LOG_USER_N("%c", msg);
76 static int target_hexmsg(struct target *target, int size, uint32_t length)
78 uint8_t *data = malloc(DIV_ROUND_UP(length * size, 4) * 4);
81 struct debug_msg_receiver *c = target->dbgmsg;
84 LOG_DEBUG("size: %i, length: %i", (int)size, (int)length);
86 target->type->target_request_data(target, DIV_ROUND_UP(length * size, 4), (uint8_t*)data);
89 for (i = 0; i < length; i++)
94 line_len += snprintf(line + line_len, 128 - line_len, "%8.8" PRIx32 " ", le_to_h_u32(data + (4*i)));
97 line_len += snprintf(line + line_len, 128 - line_len, "%4.4x ", le_to_h_u16(data + (2*i)));
100 line_len += snprintf(line + line_len, 128 - line_len, "%2.2x ", data[i]);
104 if ((i%8 == 7) || (i == length - 1))
106 LOG_DEBUG("%s", line);
110 command_print(c->cmd_ctx, "%s", line);
123 /* handle requests from the target received by a target specific
124 * side-band channel (e.g. ARM7/9 DCC)
126 int target_request(struct target *target, uint32_t request)
128 target_req_cmd_t target_req_cmd = request & 0xff;
130 /* Record that we got a target message for back-off algorithm */
134 target_charmsg(target, target_req_cmd);
137 switch (target_req_cmd)
139 case TARGET_REQ_TRACEMSG:
140 trace_point(target, (request & 0xffffff00) >> 8);
142 case TARGET_REQ_DEBUGMSG:
143 if (((request & 0xff00) >> 8) == 0)
145 target_asciimsg(target, (request & 0xffff0000) >> 16);
149 target_hexmsg(target, (request & 0xff00) >> 8, (request & 0xffff0000) >> 16);
152 case TARGET_REQ_DEBUGCHAR:
153 target_charmsg(target, (request & 0x00ff0000) >> 16);
155 /* case TARGET_REQ_SEMIHOSTING:
159 LOG_ERROR("unknown target request: %2.2x", target_req_cmd);
166 static int add_debug_msg_receiver(struct command_context *cmd_ctx, struct target *target)
168 struct debug_msg_receiver **p = &target->dbgmsg;
171 return ERROR_COMMAND_SYNTAX_ERROR;
173 /* see if there's already a list */
176 /* find end of linked list */
183 /* add new debug message receiver */
184 (*p) = malloc(sizeof(struct debug_msg_receiver));
185 (*p)->cmd_ctx = cmd_ctx;
188 /* enable callback */
189 target->dbg_msg_enabled = 1;
194 static struct debug_msg_receiver* find_debug_msg_receiver(struct command_context *cmd_ctx, struct target *target)
196 int do_all_targets = 0;
198 /* if no target has been specified search all of them */
199 if (target == NULL) {
200 /* if no targets haven been specified */
201 if (all_targets == NULL)
204 target = all_targets;
208 /* so we target != null */
209 struct debug_msg_receiver **p = &target->dbgmsg;
213 if ((*p)->cmd_ctx == cmd_ctx)
220 target = target->next;
221 } while (target && do_all_targets);
226 int delete_debug_msg_receiver(struct command_context *cmd_ctx, struct target *target)
228 struct debug_msg_receiver **p;
229 struct debug_msg_receiver *c;
230 int do_all_targets = 0;
232 /* if no target has been specified search all of them */
235 /* if no targets haven been specified */
236 if (all_targets == NULL)
239 target = all_targets;
249 struct debug_msg_receiver *next = c->next;
250 if (c->cmd_ctx == cmd_ctx)
256 /* disable callback */
257 target->dbg_msg_enabled = 0;
266 target = target->next;
267 } while (target && do_all_targets);
272 COMMAND_HANDLER(handle_target_request_debugmsgs_command)
274 struct target *target = get_current_target(CMD_CTX);
278 /* see if reciever is already registered */
279 if (find_debug_msg_receiver(CMD_CTX, target) != NULL)
284 if (!strcmp(CMD_ARGV[0], "enable") || !strcmp(CMD_ARGV[0], "charmsg"))
286 /* don't register if this command context is already receiving */
290 add_debug_msg_receiver(CMD_CTX, target);
292 charmsg_mode = !strcmp(CMD_ARGV[0], "charmsg");
294 else if (!strcmp(CMD_ARGV[0], "disable"))
296 /* no need to delete a receiver if none is registered */
300 delete_debug_msg_receiver(CMD_CTX, target);
305 return ERROR_COMMAND_SYNTAX_ERROR;
309 command_print(CMD_CTX, "receiving debug messages from current target %s",
310 (receiving) ? (charmsg_mode?"charmsg":"enabled") : "disabled");
314 static const struct command_registration target_req_exec_command_handlers[] = {
317 .handler = handle_target_request_debugmsgs_command,
318 .mode = COMMAND_EXEC,
319 .help = "display and/or modify reception of debug messages from target",
320 .usage = "['enable'|'charmsg'|'disable']",
322 COMMAND_REGISTRATION_DONE
324 static const struct command_registration target_req_command_handlers[] = {
326 .name = "target_request",
328 .help = "target request command group",
330 .chain = target_req_exec_command_handlers,
332 COMMAND_REGISTRATION_DONE
335 int target_request_register_commands(struct command_context *cmd_ctx)
337 return register_commands(cmd_ctx, NULL, target_req_command_handlers);