1 /***************************************************************************
2 * Copyright (C) 2011 by Broadcom Corporation *
3 * Evan Hunter - ehunter@broadcom.com *
5 * This program is free software; you can redistribute it and/or modify *
6 * it under the terms of the GNU General Public License as published by *
7 * the Free Software Foundation; either version 2 of the License, or *
8 * (at your option) any later version. *
10 * This program is distributed in the hope that it will be useful, *
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
13 * GNU General Public License for more details. *
15 * You should have received a copy of the GNU General Public License *
16 * along with this program; if not, write to the *
17 * Free Software Foundation, Inc., *
18 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
19 ***************************************************************************/
25 #include <helper/time_support.h>
26 #include <jtag/jtag.h>
27 #include "target/target.h"
28 #include "target/target_type.h"
30 #include "helper/log.h"
31 #include "rtos_standard_stackings.h"
33 #define FREERTOS_MAX_PRIORITIES 63
35 #define FreeRTOS_STRUCT(int_type, ptr_type, list_prev_offset)
37 struct FreeRTOS_params
{
38 const char *target_name
;
39 const unsigned char thread_count_width
;
40 const unsigned char pointer_width
;
41 const unsigned char list_next_offset
;
42 const unsigned char list_width
;
43 const unsigned char list_elem_next_offset
;
44 const unsigned char list_elem_content_offset
;
45 const unsigned char thread_stack_offset
;
46 const unsigned char thread_name_offset
;
47 const struct rtos_register_stacking
*stacking_info
;
50 const struct FreeRTOS_params FreeRTOS_params_list
[] = {
52 "cortex_m3", /* target_name */
53 4, /* thread_count_width; */
54 4, /* pointer_width; */
55 16, /* list_next_offset; */
57 8, /* list_elem_next_offset; */
58 12, /* list_elem_content_offset */
59 0, /* thread_stack_offset; */
60 52, /* thread_name_offset; */
61 &rtos_standard_Cortex_M3_stacking
, /* stacking_info */
65 #define FREERTOS_NUM_PARAMS ((int)(sizeof(FreeRTOS_params_list)/sizeof(struct FreeRTOS_params)))
67 static int FreeRTOS_detect_rtos(struct target
*target
);
68 static int FreeRTOS_create(struct target
*target
);
69 static int FreeRTOS_update_threads(struct rtos
*rtos
);
70 static int FreeRTOS_get_thread_reg_list(struct rtos
*rtos
, int64_t thread_id
, char **hex_reg_list
);
71 static int FreeRTOS_get_symbol_list_to_lookup(symbol_table_elem_t
*symbol_list
[]);
73 struct rtos_type FreeRTOS_rtos
= {
76 .detect_rtos
= FreeRTOS_detect_rtos
,
77 .create
= FreeRTOS_create
,
78 .update_threads
= FreeRTOS_update_threads
,
79 .get_thread_reg_list
= FreeRTOS_get_thread_reg_list
,
80 .get_symbol_list_to_lookup
= FreeRTOS_get_symbol_list_to_lookup
,
83 enum FreeRTOS_symbol_values
{
84 FreeRTOS_VAL_pxCurrentTCB
= 0,
85 FreeRTOS_VAL_pxReadyTasksLists
= 1,
86 FreeRTOS_VAL_xDelayedTaskList1
= 2,
87 FreeRTOS_VAL_xDelayedTaskList2
= 3,
88 FreeRTOS_VAL_pxDelayedTaskList
= 4,
89 FreeRTOS_VAL_pxOverflowDelayedTaskList
= 5,
90 FreeRTOS_VAL_xPendingReadyList
= 6,
91 FreeRTOS_VAL_xTasksWaitingTermination
= 7,
92 FreeRTOS_VAL_xSuspendedTaskList
= 8,
93 FreeRTOS_VAL_uxCurrentNumberOfTasks
= 9,
94 FreeRTOS_VAL_uxTopUsedPriority
= 10,
97 static char *FreeRTOS_symbol_list
[] = {
103 "pxOverflowDelayedTaskList",
105 "xTasksWaitingTermination",
106 "xSuspendedTaskList",
107 "uxCurrentNumberOfTasks",
112 #define FREERTOS_NUM_SYMBOLS (sizeof(FreeRTOS_symbol_list)/sizeof(char *))
115 /* this is not safe for little endian yet */
116 /* may be problems reading if sizes are not 32 bit long integers. */
117 /* test mallocs for failure */
119 static int FreeRTOS_update_threads(struct rtos
*rtos
)
124 const struct FreeRTOS_params
*param
;
126 if (rtos
->rtos_specific_params
== NULL
)
129 param
= (const struct FreeRTOS_params
*) rtos
->rtos_specific_params
;
131 if (rtos
->symbols
== NULL
) {
132 LOG_OUTPUT("No symbols for FreeRTOS\r\n");
136 if (rtos
->symbols
[FreeRTOS_VAL_uxCurrentNumberOfTasks
].address
== 0) {
137 LOG_OUTPUT("Don't have the number of threads in FreeRTOS \r\n");
141 int thread_list_size
= 0;
142 retval
= target_read_buffer(rtos
->target
,
143 rtos
->symbols
[FreeRTOS_VAL_uxCurrentNumberOfTasks
].address
,
144 param
->thread_count_width
,
145 (uint8_t *)&thread_list_size
);
147 if (retval
!= ERROR_OK
) {
148 LOG_OUTPUT("Could not read FreeRTOS thread count from target\r\n");
152 /* wipe out previous thread details if any */
153 if (rtos
->thread_details
!= NULL
) {
155 for (j
= 0; j
< rtos
->thread_count
; j
++) {
156 if (rtos
->thread_details
[j
].display_str
!= NULL
) {
157 free(rtos
->thread_details
[j
].display_str
);
158 rtos
->thread_details
[j
].display_str
= NULL
;
160 if (rtos
->thread_details
[j
].thread_name_str
!= NULL
) {
161 free(rtos
->thread_details
[j
].thread_name_str
);
162 rtos
->thread_details
[j
].thread_name_str
= NULL
;
164 if (rtos
->thread_details
[j
].extra_info_str
!= NULL
) {
165 free(rtos
->thread_details
[j
].extra_info_str
);
166 rtos
->thread_details
[j
].extra_info_str
= NULL
;
169 free(rtos
->thread_details
);
170 rtos
->thread_details
= NULL
;
173 /* read the current thread */
174 retval
= target_read_buffer(rtos
->target
,
175 rtos
->symbols
[FreeRTOS_VAL_pxCurrentTCB
].address
,
176 param
->pointer_width
,
177 (uint8_t *)&rtos
->current_thread
);
178 if (retval
!= ERROR_OK
) {
179 LOG_OUTPUT("Error reading current thread in FreeRTOS thread list\r\n");
183 if ((thread_list_size
== 0) || (rtos
->current_thread
== 0)) {
184 /* Either : No RTOS threads - there is always at least the current execution though */
185 /* OR : No current thread - all threads suspended - show the current execution
187 char tmp_str
[] = "Current Execution";
190 rtos
->thread_details
= (struct thread_detail
*) malloc(
191 sizeof(struct thread_detail
) * thread_list_size
);
192 if (!rtos
->thread_details
) {
193 LOG_ERROR("Error allocating memory for %d threads", thread_list_size
);
196 rtos
->thread_details
->threadid
= 1;
197 rtos
->thread_details
->exists
= true;
198 rtos
->thread_details
->display_str
= NULL
;
199 rtos
->thread_details
->extra_info_str
= NULL
;
200 rtos
->thread_details
->thread_name_str
= (char *) malloc(sizeof(tmp_str
));
201 strcpy(rtos
->thread_details
->thread_name_str
, tmp_str
);
203 if (thread_list_size
== 1) {
204 rtos
->thread_count
= 1;
208 /* create space for new thread details */
209 rtos
->thread_details
= (struct thread_detail
*) malloc(
210 sizeof(struct thread_detail
) * thread_list_size
);
211 if (!rtos
->thread_details
) {
212 LOG_ERROR("Error allocating memory for %d threads", thread_list_size
);
217 /* Find out how many lists are needed to be read from pxReadyTasksLists, */
218 int64_t max_used_priority
= 0;
219 retval
= target_read_buffer(rtos
->target
,
220 rtos
->symbols
[FreeRTOS_VAL_uxTopUsedPriority
].address
,
221 param
->pointer_width
,
222 (uint8_t *)&max_used_priority
);
223 if (retval
!= ERROR_OK
)
225 if (max_used_priority
> FREERTOS_MAX_PRIORITIES
) {
226 LOG_ERROR("FreeRTOS maximum used priority is unreasonably big, not proceeding: %" PRId64
"",
231 symbol_address_t
*list_of_lists
=
232 (symbol_address_t
*)malloc(sizeof(symbol_address_t
) *
233 (max_used_priority
+1 + 5));
234 if (!list_of_lists
) {
235 LOG_ERROR("Error allocating memory for %" PRId64
" priorities", max_used_priority
);
240 for (num_lists
= 0; num_lists
<= max_used_priority
; num_lists
++)
241 list_of_lists
[num_lists
] = rtos
->symbols
[FreeRTOS_VAL_pxReadyTasksLists
].address
+
242 num_lists
* param
->list_width
;
244 list_of_lists
[num_lists
++] = rtos
->symbols
[FreeRTOS_VAL_xDelayedTaskList1
].address
;
245 list_of_lists
[num_lists
++] = rtos
->symbols
[FreeRTOS_VAL_xDelayedTaskList2
].address
;
246 list_of_lists
[num_lists
++] = rtos
->symbols
[FreeRTOS_VAL_xPendingReadyList
].address
;
247 list_of_lists
[num_lists
++] = rtos
->symbols
[FreeRTOS_VAL_xSuspendedTaskList
].address
;
248 list_of_lists
[num_lists
++] = rtos
->symbols
[FreeRTOS_VAL_xTasksWaitingTermination
].address
;
250 for (i
= 0; i
< num_lists
; i
++) {
251 if (list_of_lists
[i
] == 0)
254 /* Read the number of threads in this list */
255 int64_t list_thread_count
= 0;
256 retval
= target_read_buffer(rtos
->target
,
258 param
->thread_count_width
,
259 (uint8_t *)&list_thread_count
);
260 if (retval
!= ERROR_OK
) {
261 LOG_OUTPUT("Error reading number of threads in FreeRTOS thread list\r\n");
266 if (list_thread_count
== 0)
269 /* Read the location of first list item */
270 uint64_t prev_list_elem_ptr
= -1;
271 uint64_t list_elem_ptr
= 0;
272 retval
= target_read_buffer(rtos
->target
,
273 list_of_lists
[i
] + param
->list_next_offset
,
274 param
->pointer_width
,
275 (uint8_t *)&list_elem_ptr
);
276 if (retval
!= ERROR_OK
) {
277 LOG_OUTPUT("Error reading first thread item location in FreeRTOS thread list\r\n");
282 while ((list_thread_count
> 0) && (list_elem_ptr
!= 0) &&
283 (list_elem_ptr
!= prev_list_elem_ptr
) &&
284 (tasks_found
< thread_list_size
)) {
285 /* Get the location of the thread structure. */
286 rtos
->thread_details
[tasks_found
].threadid
= 0;
287 retval
= target_read_buffer(rtos
->target
,
288 list_elem_ptr
+ param
->list_elem_content_offset
,
289 param
->pointer_width
,
290 (uint8_t *)&(rtos
->thread_details
[tasks_found
].threadid
));
291 if (retval
!= ERROR_OK
) {
292 LOG_OUTPUT("Error reading thread list item object in FreeRTOS thread list\r\n");
297 /* get thread name */
299 #define FREERTOS_THREAD_NAME_STR_SIZE (200)
300 char tmp_str
[FREERTOS_THREAD_NAME_STR_SIZE
];
302 /* Read the thread name */
303 retval
= target_read_buffer(rtos
->target
,
304 rtos
->thread_details
[tasks_found
].threadid
+ param
->thread_name_offset
,
305 FREERTOS_THREAD_NAME_STR_SIZE
,
306 (uint8_t *)&tmp_str
);
307 if (retval
!= ERROR_OK
) {
308 LOG_OUTPUT("Error reading first thread item location in FreeRTOS thread list\r\n");
312 tmp_str
[FREERTOS_THREAD_NAME_STR_SIZE
-1] = '\x00';
314 if (tmp_str
[0] == '\x00')
315 strcpy(tmp_str
, "No Name");
317 rtos
->thread_details
[tasks_found
].thread_name_str
=
318 (char *)malloc(strlen(tmp_str
)+1);
319 strcpy(rtos
->thread_details
[tasks_found
].thread_name_str
, tmp_str
);
320 rtos
->thread_details
[tasks_found
].display_str
= NULL
;
321 rtos
->thread_details
[tasks_found
].exists
= true;
323 if (rtos
->thread_details
[tasks_found
].threadid
== rtos
->current_thread
) {
324 char running_str
[] = "Running";
325 rtos
->thread_details
[tasks_found
].extra_info_str
= (char *) malloc(
326 sizeof(running_str
));
327 strcpy(rtos
->thread_details
[tasks_found
].extra_info_str
,
330 rtos
->thread_details
[tasks_found
].extra_info_str
= NULL
;
335 prev_list_elem_ptr
= list_elem_ptr
;
337 retval
= target_read_buffer(rtos
->target
,
338 prev_list_elem_ptr
+ param
->list_elem_next_offset
,
339 param
->pointer_width
,
340 (uint8_t *)&list_elem_ptr
);
341 if (retval
!= ERROR_OK
) {
342 LOG_OUTPUT("Error reading next thread item location in FreeRTOS thread list\r\n");
350 rtos
->thread_count
= tasks_found
;
354 static int FreeRTOS_get_thread_reg_list(struct rtos
*rtos
, int64_t thread_id
, char **hex_reg_list
)
357 const struct FreeRTOS_params
*param
;
358 int64_t stack_ptr
= 0;
360 *hex_reg_list
= NULL
;
367 if (rtos
->rtos_specific_params
== NULL
)
370 param
= (const struct FreeRTOS_params
*) rtos
->rtos_specific_params
;
372 /* Read the stack pointer */
373 retval
= target_read_buffer(rtos
->target
,
374 thread_id
+ param
->thread_stack_offset
,
375 param
->pointer_width
,
376 (uint8_t *)&stack_ptr
);
377 if (retval
!= ERROR_OK
) {
378 LOG_OUTPUT("Error reading stack frame from FreeRTOS thread\r\n");
382 return rtos_generic_stack_read(rtos
->target
, param
->stacking_info
, stack_ptr
, hex_reg_list
);
386 static int FreeRTOS_get_symbol_list_to_lookup(symbol_table_elem_t
*symbol_list
[])
389 *symbol_list
= (symbol_table_elem_t
*) malloc(
390 sizeof(symbol_table_elem_t
) * FREERTOS_NUM_SYMBOLS
);
392 for (i
= 0; i
< FREERTOS_NUM_SYMBOLS
; i
++)
393 (*symbol_list
)[i
].symbol_name
= FreeRTOS_symbol_list
[i
];
400 static int FreeRTOS_set_current_thread(struct rtos
*rtos
, threadid_t thread_id
)
405 static int FreeRTOS_get_thread_ascii_info(struct rtos
*rtos
, threadid_t thread_id
, char **info
)
408 const struct FreeRTOS_params
*param
;
416 if (rtos
->rtos_specific_params
== NULL
)
419 param
= (const struct FreeRTOS_params
*) rtos
->rtos_specific_params
;
421 #define FREERTOS_THREAD_NAME_STR_SIZE (200)
422 char tmp_str
[FREERTOS_THREAD_NAME_STR_SIZE
];
424 /* Read the thread name */
425 retval
= target_read_buffer(rtos
->target
,
426 thread_id
+ param
->thread_name_offset
,
427 FREERTOS_THREAD_NAME_STR_SIZE
,
428 (uint8_t *)&tmp_str
);
429 if (retval
!= ERROR_OK
) {
430 LOG_OUTPUT("Error reading first thread item location in FreeRTOS thread list\r\n");
433 tmp_str
[FREERTOS_THREAD_NAME_STR_SIZE
-1] = '\x00';
435 if (tmp_str
[0] == '\x00')
436 strcpy(tmp_str
, "No Name");
438 *info
= (char *)malloc(strlen(tmp_str
)+1);
439 strcpy(*info
, tmp_str
);
445 static int FreeRTOS_detect_rtos(struct target
*target
)
447 if ((target
->rtos
->symbols
!= NULL
) &&
448 (target
->rtos
->symbols
[FreeRTOS_VAL_pxReadyTasksLists
].address
!= 0)) {
449 /* looks like FreeRTOS */
455 static int FreeRTOS_create(struct target
*target
)
458 while ((i
< FREERTOS_NUM_PARAMS
) &&
459 (0 != strcmp(FreeRTOS_params_list
[i
].target_name
, target
->type
->name
))) {
462 if (i
>= FREERTOS_NUM_PARAMS
) {
463 LOG_OUTPUT("Could not find target in FreeRTOS compatibility list\r\n");
467 target
->rtos
->rtos_specific_params
= (void *) &FreeRTOS_params_list
[i
];
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