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 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 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 "helper/types.h"
32 #include "rtos_standard_stackings.h"
34 #define FREERTOS_MAX_PRIORITIES 63
36 #define FreeRTOS_STRUCT(int_type, ptr_type, list_prev_offset)
38 struct FreeRTOS_params
{
39 const char *target_name
;
40 const unsigned char thread_count_width
;
41 const unsigned char pointer_width
;
42 const unsigned char list_next_offset
;
43 const unsigned char list_width
;
44 const unsigned char list_elem_next_offset
;
45 const unsigned char list_elem_content_offset
;
46 const unsigned char thread_stack_offset
;
47 const unsigned char thread_name_offset
;
48 const struct rtos_register_stacking
*stacking_info
;
51 static const struct FreeRTOS_params FreeRTOS_params_list
[] = {
53 "cortex_m", /* target_name */
54 4, /* thread_count_width; */
55 4, /* pointer_width; */
56 16, /* list_next_offset; */
58 8, /* list_elem_next_offset; */
59 12, /* list_elem_content_offset */
60 0, /* thread_stack_offset; */
61 52, /* thread_name_offset; */
62 &rtos_standard_Cortex_M3_stacking
, /* stacking_info */
65 "hla_target", /* target_name */
66 4, /* thread_count_width; */
67 4, /* pointer_width; */
68 16, /* list_next_offset; */
70 8, /* list_elem_next_offset; */
71 12, /* list_elem_content_offset */
72 0, /* thread_stack_offset; */
73 52, /* thread_name_offset; */
74 &rtos_standard_Cortex_M3_stacking
, /* stacking_info */
77 "nds32_v3", /* target_name */
78 4, /* thread_count_width; */
79 4, /* pointer_width; */
80 16, /* list_next_offset; */
82 8, /* list_elem_next_offset; */
83 12, /* list_elem_content_offset */
84 0, /* thread_stack_offset; */
85 52, /* thread_name_offset; */
86 &rtos_standard_NDS32_N1068_stacking
, /* stacking_info */
90 #define FREERTOS_NUM_PARAMS ((int)(sizeof(FreeRTOS_params_list)/sizeof(struct FreeRTOS_params)))
92 static int FreeRTOS_detect_rtos(struct target
*target
);
93 static int FreeRTOS_create(struct target
*target
);
94 static int FreeRTOS_update_threads(struct rtos
*rtos
);
95 static int FreeRTOS_get_thread_reg_list(struct rtos
*rtos
, int64_t thread_id
, char **hex_reg_list
);
96 static int FreeRTOS_get_symbol_list_to_lookup(symbol_table_elem_t
*symbol_list
[]);
98 struct rtos_type FreeRTOS_rtos
= {
101 .detect_rtos
= FreeRTOS_detect_rtos
,
102 .create
= FreeRTOS_create
,
103 .update_threads
= FreeRTOS_update_threads
,
104 .get_thread_reg_list
= FreeRTOS_get_thread_reg_list
,
105 .get_symbol_list_to_lookup
= FreeRTOS_get_symbol_list_to_lookup
,
108 enum FreeRTOS_symbol_values
{
109 FreeRTOS_VAL_pxCurrentTCB
= 0,
110 FreeRTOS_VAL_pxReadyTasksLists
= 1,
111 FreeRTOS_VAL_xDelayedTaskList1
= 2,
112 FreeRTOS_VAL_xDelayedTaskList2
= 3,
113 FreeRTOS_VAL_pxDelayedTaskList
= 4,
114 FreeRTOS_VAL_pxOverflowDelayedTaskList
= 5,
115 FreeRTOS_VAL_xPendingReadyList
= 6,
116 FreeRTOS_VAL_xTasksWaitingTermination
= 7,
117 FreeRTOS_VAL_xSuspendedTaskList
= 8,
118 FreeRTOS_VAL_uxCurrentNumberOfTasks
= 9,
119 FreeRTOS_VAL_uxTopUsedPriority
= 10,
127 static const struct symbols FreeRTOS_symbol_list
[] = {
128 { "pxCurrentTCB", false },
129 { "pxReadyTasksLists", false },
130 { "xDelayedTaskList1", false },
131 { "xDelayedTaskList2", false },
132 { "pxDelayedTaskList", false },
133 { "pxOverflowDelayedTaskList", false },
134 { "xPendingReadyList", false },
135 { "xTasksWaitingTermination", true }, /* Only if INCLUDE_vTaskDelete */
136 { "xSuspendedTaskList", true }, /* Only if INCLUDE_vTaskSuspend */
137 { "uxCurrentNumberOfTasks", false },
138 { "uxTopUsedPriority", true }, /* Unavailable since v7.5.3 */
143 /* this is not safe for little endian yet */
144 /* may be problems reading if sizes are not 32 bit long integers. */
145 /* test mallocs for failure */
147 static int FreeRTOS_update_threads(struct rtos
*rtos
)
152 const struct FreeRTOS_params
*param
;
154 if (rtos
->rtos_specific_params
== NULL
)
157 param
= (const struct FreeRTOS_params
*) rtos
->rtos_specific_params
;
159 if (rtos
->symbols
== NULL
) {
160 LOG_ERROR("No symbols for FreeRTOS");
164 if (rtos
->symbols
[FreeRTOS_VAL_uxCurrentNumberOfTasks
].address
== 0) {
165 LOG_ERROR("Don't have the number of threads in FreeRTOS");
169 int thread_list_size
= 0;
170 retval
= target_read_buffer(rtos
->target
,
171 rtos
->symbols
[FreeRTOS_VAL_uxCurrentNumberOfTasks
].address
,
172 param
->thread_count_width
,
173 (uint8_t *)&thread_list_size
);
174 LOG_DEBUG("FreeRTOS: Read uxCurrentNumberOfTasks at 0x%" PRIx64
", value %d\r\n",
175 rtos
->symbols
[FreeRTOS_VAL_uxCurrentNumberOfTasks
].address
,
178 if (retval
!= ERROR_OK
) {
179 LOG_ERROR("Could not read FreeRTOS thread count from target");
183 /* wipe out previous thread details if any */
184 rtos_free_threadlist(rtos
);
186 /* read the current thread */
187 retval
= target_read_buffer(rtos
->target
,
188 rtos
->symbols
[FreeRTOS_VAL_pxCurrentTCB
].address
,
189 param
->pointer_width
,
190 (uint8_t *)&rtos
->current_thread
);
191 if (retval
!= ERROR_OK
) {
192 LOG_ERROR("Error reading current thread in FreeRTOS thread list");
195 LOG_DEBUG("FreeRTOS: Read pxCurrentTCB at 0x%" PRIx64
", value 0x%" PRIx64
"\r\n",
196 rtos
->symbols
[FreeRTOS_VAL_pxCurrentTCB
].address
,
197 rtos
->current_thread
);
199 if ((thread_list_size
== 0) || (rtos
->current_thread
== 0)) {
200 /* Either : No RTOS threads - there is always at least the current execution though */
201 /* OR : No current thread - all threads suspended - show the current execution
203 char tmp_str
[] = "Current Execution";
206 rtos
->thread_details
= malloc(
207 sizeof(struct thread_detail
) * thread_list_size
);
208 if (!rtos
->thread_details
) {
209 LOG_ERROR("Error allocating memory for %d threads", thread_list_size
);
212 rtos
->thread_details
->threadid
= 1;
213 rtos
->thread_details
->exists
= true;
214 rtos
->thread_details
->display_str
= NULL
;
215 rtos
->thread_details
->extra_info_str
= NULL
;
216 rtos
->thread_details
->thread_name_str
= malloc(sizeof(tmp_str
));
217 strcpy(rtos
->thread_details
->thread_name_str
, tmp_str
);
219 if (thread_list_size
== 1) {
220 rtos
->thread_count
= 1;
224 /* create space for new thread details */
225 rtos
->thread_details
= malloc(
226 sizeof(struct thread_detail
) * thread_list_size
);
227 if (!rtos
->thread_details
) {
228 LOG_ERROR("Error allocating memory for %d threads", thread_list_size
);
233 /* Find out how many lists are needed to be read from pxReadyTasksLists, */
234 if (rtos
->symbols
[FreeRTOS_VAL_uxTopUsedPriority
].address
== 0) {
235 LOG_ERROR("FreeRTOS: uxTopUsedPriority is not defined, consult the OpenOCD manual for a work-around");
238 int64_t max_used_priority
= 0;
239 retval
= target_read_buffer(rtos
->target
,
240 rtos
->symbols
[FreeRTOS_VAL_uxTopUsedPriority
].address
,
241 param
->pointer_width
,
242 (uint8_t *)&max_used_priority
);
243 if (retval
!= ERROR_OK
)
245 LOG_DEBUG("FreeRTOS: Read uxTopUsedPriority at 0x%" PRIx64
", value %" PRId64
"\r\n",
246 rtos
->symbols
[FreeRTOS_VAL_uxTopUsedPriority
].address
,
248 if (max_used_priority
> FREERTOS_MAX_PRIORITIES
) {
249 LOG_ERROR("FreeRTOS maximum used priority is unreasonably big, not proceeding: %" PRId64
"",
254 symbol_address_t
*list_of_lists
=
255 malloc(sizeof(symbol_address_t
) *
256 (max_used_priority
+1 + 5));
257 if (!list_of_lists
) {
258 LOG_ERROR("Error allocating memory for %" PRId64
" priorities", max_used_priority
);
263 for (num_lists
= 0; num_lists
<= max_used_priority
; num_lists
++)
264 list_of_lists
[num_lists
] = rtos
->symbols
[FreeRTOS_VAL_pxReadyTasksLists
].address
+
265 num_lists
* param
->list_width
;
267 list_of_lists
[num_lists
++] = rtos
->symbols
[FreeRTOS_VAL_xDelayedTaskList1
].address
;
268 list_of_lists
[num_lists
++] = rtos
->symbols
[FreeRTOS_VAL_xDelayedTaskList2
].address
;
269 list_of_lists
[num_lists
++] = rtos
->symbols
[FreeRTOS_VAL_xPendingReadyList
].address
;
270 list_of_lists
[num_lists
++] = rtos
->symbols
[FreeRTOS_VAL_xSuspendedTaskList
].address
;
271 list_of_lists
[num_lists
++] = rtos
->symbols
[FreeRTOS_VAL_xTasksWaitingTermination
].address
;
273 for (i
= 0; i
< num_lists
; i
++) {
274 if (list_of_lists
[i
] == 0)
277 /* Read the number of threads in this list */
278 int64_t list_thread_count
= 0;
279 retval
= target_read_buffer(rtos
->target
,
281 param
->thread_count_width
,
282 (uint8_t *)&list_thread_count
);
283 if (retval
!= ERROR_OK
) {
284 LOG_ERROR("Error reading number of threads in FreeRTOS thread list");
288 LOG_DEBUG("FreeRTOS: Read thread count for list %d at 0x%" PRIx64
", value %" PRId64
"\r\n",
289 i
, list_of_lists
[i
], list_thread_count
);
291 if (list_thread_count
== 0)
294 /* Read the location of first list item */
295 uint64_t prev_list_elem_ptr
= -1;
296 uint64_t list_elem_ptr
= 0;
297 retval
= target_read_buffer(rtos
->target
,
298 list_of_lists
[i
] + param
->list_next_offset
,
299 param
->pointer_width
,
300 (uint8_t *)&list_elem_ptr
);
301 if (retval
!= ERROR_OK
) {
302 LOG_ERROR("Error reading first thread item location in FreeRTOS thread list");
306 LOG_DEBUG("FreeRTOS: Read first item for list %d at 0x%" PRIx64
", value 0x%" PRIx64
"\r\n",
307 i
, list_of_lists
[i
] + param
->list_next_offset
, list_elem_ptr
);
309 while ((list_thread_count
> 0) && (list_elem_ptr
!= 0) &&
310 (list_elem_ptr
!= prev_list_elem_ptr
) &&
311 (tasks_found
< thread_list_size
)) {
312 /* Get the location of the thread structure. */
313 rtos
->thread_details
[tasks_found
].threadid
= 0;
314 retval
= target_read_buffer(rtos
->target
,
315 list_elem_ptr
+ param
->list_elem_content_offset
,
316 param
->pointer_width
,
317 (uint8_t *)&(rtos
->thread_details
[tasks_found
].threadid
));
318 if (retval
!= ERROR_OK
) {
319 LOG_ERROR("Error reading thread list item object in FreeRTOS thread list");
323 LOG_DEBUG("FreeRTOS: Read Thread ID at 0x%" PRIx64
", value 0x%" PRIx64
"\r\n",
324 list_elem_ptr
+ param
->list_elem_content_offset
,
325 rtos
->thread_details
[tasks_found
].threadid
);
327 /* get thread name */
329 #define FREERTOS_THREAD_NAME_STR_SIZE (200)
330 char tmp_str
[FREERTOS_THREAD_NAME_STR_SIZE
];
332 /* Read the thread name */
333 retval
= target_read_buffer(rtos
->target
,
334 rtos
->thread_details
[tasks_found
].threadid
+ param
->thread_name_offset
,
335 FREERTOS_THREAD_NAME_STR_SIZE
,
336 (uint8_t *)&tmp_str
);
337 if (retval
!= ERROR_OK
) {
338 LOG_ERROR("Error reading first thread item location in FreeRTOS thread list");
342 tmp_str
[FREERTOS_THREAD_NAME_STR_SIZE
-1] = '\x00';
343 LOG_DEBUG("FreeRTOS: Read Thread Name at 0x%" PRIx64
", value \"%s\"\r\n",
344 rtos
->thread_details
[tasks_found
].threadid
+ param
->thread_name_offset
,
347 if (tmp_str
[0] == '\x00')
348 strcpy(tmp_str
, "No Name");
350 rtos
->thread_details
[tasks_found
].thread_name_str
=
351 malloc(strlen(tmp_str
)+1);
352 strcpy(rtos
->thread_details
[tasks_found
].thread_name_str
, tmp_str
);
353 rtos
->thread_details
[tasks_found
].display_str
= NULL
;
354 rtos
->thread_details
[tasks_found
].exists
= true;
356 if (rtos
->thread_details
[tasks_found
].threadid
== rtos
->current_thread
) {
357 char running_str
[] = "Running";
358 rtos
->thread_details
[tasks_found
].extra_info_str
= malloc(
359 sizeof(running_str
));
360 strcpy(rtos
->thread_details
[tasks_found
].extra_info_str
,
363 rtos
->thread_details
[tasks_found
].extra_info_str
= NULL
;
368 prev_list_elem_ptr
= list_elem_ptr
;
370 retval
= target_read_buffer(rtos
->target
,
371 prev_list_elem_ptr
+ param
->list_elem_next_offset
,
372 param
->pointer_width
,
373 (uint8_t *)&list_elem_ptr
);
374 if (retval
!= ERROR_OK
) {
375 LOG_ERROR("Error reading next thread item location in FreeRTOS thread list");
379 LOG_DEBUG("FreeRTOS: Read next thread location at 0x%" PRIx64
", value 0x%" PRIx64
"\r\n",
380 prev_list_elem_ptr
+ param
->list_elem_next_offset
,
386 rtos
->thread_count
= tasks_found
;
390 static int FreeRTOS_get_thread_reg_list(struct rtos
*rtos
, int64_t thread_id
, char **hex_reg_list
)
393 const struct FreeRTOS_params
*param
;
394 int64_t stack_ptr
= 0;
396 *hex_reg_list
= NULL
;
403 if (rtos
->rtos_specific_params
== NULL
)
406 param
= (const struct FreeRTOS_params
*) rtos
->rtos_specific_params
;
408 /* Read the stack pointer */
409 retval
= target_read_buffer(rtos
->target
,
410 thread_id
+ param
->thread_stack_offset
,
411 param
->pointer_width
,
412 (uint8_t *)&stack_ptr
);
413 if (retval
!= ERROR_OK
) {
414 LOG_ERROR("Error reading stack frame from FreeRTOS thread");
417 LOG_DEBUG("FreeRTOS: Read stack pointer at 0x%" PRIx64
", value 0x%" PRIx64
"\r\n",
418 thread_id
+ param
->thread_stack_offset
,
421 return rtos_generic_stack_read(rtos
->target
, param
->stacking_info
, stack_ptr
, hex_reg_list
);
424 static int FreeRTOS_get_symbol_list_to_lookup(symbol_table_elem_t
*symbol_list
[])
427 *symbol_list
= calloc(
428 ARRAY_SIZE(FreeRTOS_symbol_list
), sizeof(symbol_table_elem_t
));
430 for (i
= 0; i
< ARRAY_SIZE(FreeRTOS_symbol_list
); i
++) {
431 (*symbol_list
)[i
].symbol_name
= FreeRTOS_symbol_list
[i
].name
;
432 (*symbol_list
)[i
].optional
= FreeRTOS_symbol_list
[i
].optional
;
440 static int FreeRTOS_set_current_thread(struct rtos
*rtos
, threadid_t thread_id
)
445 static int FreeRTOS_get_thread_ascii_info(struct rtos
*rtos
, threadid_t thread_id
, char **info
)
448 const struct FreeRTOS_params
*param
;
456 if (rtos
->rtos_specific_params
== NULL
)
459 param
= (const struct FreeRTOS_params
*) rtos
->rtos_specific_params
;
461 #define FREERTOS_THREAD_NAME_STR_SIZE (200)
462 char tmp_str
[FREERTOS_THREAD_NAME_STR_SIZE
];
464 /* Read the thread name */
465 retval
= target_read_buffer(rtos
->target
,
466 thread_id
+ param
->thread_name_offset
,
467 FREERTOS_THREAD_NAME_STR_SIZE
,
468 (uint8_t *)&tmp_str
);
469 if (retval
!= ERROR_OK
) {
470 LOG_ERROR("Error reading first thread item location in FreeRTOS thread list");
473 tmp_str
[FREERTOS_THREAD_NAME_STR_SIZE
-1] = '\x00';
475 if (tmp_str
[0] == '\x00')
476 strcpy(tmp_str
, "No Name");
478 *info
= malloc(strlen(tmp_str
)+1);
479 strcpy(*info
, tmp_str
);
485 static int FreeRTOS_detect_rtos(struct target
*target
)
487 if ((target
->rtos
->symbols
!= NULL
) &&
488 (target
->rtos
->symbols
[FreeRTOS_VAL_pxReadyTasksLists
].address
!= 0)) {
489 /* looks like FreeRTOS */
495 static int FreeRTOS_create(struct target
*target
)
498 while ((i
< FREERTOS_NUM_PARAMS
) &&
499 (0 != strcmp(FreeRTOS_params_list
[i
].target_name
, target
->type
->name
))) {
502 if (i
>= FREERTOS_NUM_PARAMS
) {
503 LOG_ERROR("Could not find target in FreeRTOS compatibility list");
507 target
->rtos
->rtos_specific_params
= (void *) &FreeRTOS_params_list
[i
];
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