rtos: add sanity checking for FreeRTOS's quantity of priorities
[openocd.git] / src / rtos / FreeRTOS.c
index 40da925fdc2342b6d9230add02bbf875954ef420..a64626989e3bd1310c0b589f7287915ec109fb76 100644 (file)
@@ -18,7 +18,6 @@
  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  ***************************************************************************/
 
-
 #ifdef HAVE_CONFIG_H
 #include "config.h"
 #endif
 #include "helper/log.h"
 #include "rtos_standard_stackings.h"
 
-#define FreeRTOS_STRUCT( int_type, ptr_type, list_prev_offset )
-
-
-struct FreeRTOS_params
-{
-       const char *                         target_name;
-       const unsigned char                  thread_count_width;
-       const unsigned char                  pointer_width;
-       const unsigned char                  list_next_offset;
-       const unsigned char                  list_width;
-       const unsigned char                  list_elem_next_offset;
-       const unsigned char                  list_elem_content_offset;
-       const unsigned char                  thread_stack_offset;
-       const unsigned char                  thread_name_offset;
-       const struct rtos_register_stackingstacking_info;
+#define FREERTOS_MAX_PRIORITIES        63
+
+#define FreeRTOS_STRUCT(int_type, ptr_type, list_prev_offset)
+
+struct FreeRTOS_params {
+       const char *target_name;
+       const unsigned char thread_count_width;
+       const unsigned char pointer_width;
+       const unsigned char list_next_offset;
+       const unsigned char list_width;
+       const unsigned char list_elem_next_offset;
+       const unsigned char list_elem_content_offset;
+       const unsigned char thread_stack_offset;
+       const unsigned char thread_name_offset;
+       const struct rtos_register_stacking *stacking_info;
 };
 
-
-
-
-const struct FreeRTOS_params FreeRTOS_params_list[] =
-{
-               { "cortex_m3",                      // target_name
-          4,                                // thread_count_width;
-          4,                                // pointer_width;
-          16,                               // list_next_offset;
-          20,                               // list_width;
-          8,                                // list_elem_next_offset;
-          12,                               // list_elem_content_offset
-          0,                                // thread_stack_offset;
-          52,                               // thread_name_offset;
-          &rtos_standard_Cortex_M3_stacking, // stacking_info
-               }
-
+const struct FreeRTOS_params FreeRTOS_params_list[] = {
+       {
+       "cortex_m3",                    /* target_name */
+       4,                                              /* thread_count_width; */
+       4,                                              /* pointer_width; */
+       16,                                             /* list_next_offset; */
+       20,                                             /* list_width; */
+       8,                                              /* list_elem_next_offset; */
+       12,                                             /* list_elem_content_offset */
+       0,                                              /* thread_stack_offset; */
+       52,                                             /* thread_name_offset; */
+       &rtos_standard_Cortex_M3_stacking,      /* stacking_info */
+       }
 };
 
-
 #define FREERTOS_NUM_PARAMS ((int)(sizeof(FreeRTOS_params_list)/sizeof(struct FreeRTOS_params)))
 
-static int FreeRTOS_detect_rtos( struct target* target );
-static int FreeRTOS_create( struct target* target );
-static int FreeRTOS_update_threads( struct rtos *rtos );
-static int FreeRTOS_get_thread_reg_list(struct rtos *rtos, int64_t thread_id, char ** hex_reg_list );
-static int FreeRTOS_get_symbol_list_to_lookup(symbol_table_elem_t * symbol_list[]);
-
-
-
+static int FreeRTOS_detect_rtos(struct target *target);
+static int FreeRTOS_create(struct target *target);
+static int FreeRTOS_update_threads(struct rtos *rtos);
+static int FreeRTOS_get_thread_reg_list(struct rtos *rtos, int64_t thread_id, char **hex_reg_list);
+static int FreeRTOS_get_symbol_list_to_lookup(symbol_table_elem_t *symbol_list[]);
 
-struct rtos_type FreeRTOS_rtos =
-{
-       .name                       = "FreeRTOS",
+struct rtos_type FreeRTOS_rtos = {
+       .name = "FreeRTOS",
 
-       .detect_rtos                = FreeRTOS_detect_rtos,
-       .create                     = FreeRTOS_create,
-       .update_threads            = FreeRTOS_update_threads,
-       .get_thread_reg_list        = FreeRTOS_get_thread_reg_list,
-       .get_symbol_list_to_lookup  = FreeRTOS_get_symbol_list_to_lookup,
+       .detect_rtos = FreeRTOS_detect_rtos,
+       .create = FreeRTOS_create,
+       .update_threads = FreeRTOS_update_threads,
+       .get_thread_reg_list = FreeRTOS_get_thread_reg_list,
+       .get_symbol_list_to_lookup = FreeRTOS_get_symbol_list_to_lookup,
 };
 
-enum FreeRTOS_symbol_values
-{
-       FreeRTOS_VAL_pxCurrentTCB              = 0,
-       FreeRTOS_VAL_pxReadyTasksLists         = 1,
-       FreeRTOS_VAL_xDelayedTaskList1         = 2,
-       FreeRTOS_VAL_xDelayedTaskList2         = 3,
-       FreeRTOS_VAL_pxDelayedTaskList         = 4,
+enum FreeRTOS_symbol_values {
+       FreeRTOS_VAL_pxCurrentTCB = 0,
+       FreeRTOS_VAL_pxReadyTasksLists = 1,
+       FreeRTOS_VAL_xDelayedTaskList1 = 2,
+       FreeRTOS_VAL_xDelayedTaskList2 = 3,
+       FreeRTOS_VAL_pxDelayedTaskList = 4,
        FreeRTOS_VAL_pxOverflowDelayedTaskList = 5,
-       FreeRTOS_VAL_xPendingReadyList         = 6,
-       FreeRTOS_VAL_xTasksWaitingTermination  = 7,
-       FreeRTOS_VAL_xSuspendedTaskList        = 8,
-       FreeRTOS_VAL_uxCurrentNumberOfTasks    = 9,
+       FreeRTOS_VAL_xPendingReadyList = 6,
+       FreeRTOS_VAL_xTasksWaitingTermination = 7,
+       FreeRTOS_VAL_xSuspendedTaskList = 8,
+       FreeRTOS_VAL_uxCurrentNumberOfTasks = 9,
+       FreeRTOS_VAL_uxTopUsedPriority = 10,
 };
 
-static char* FreeRTOS_symbol_list[] =
-{
-               "pxCurrentTCB",
-               "pxReadyTasksLists",
-               "xDelayedTaskList1",
-               "xDelayedTaskList2",
-               "pxDelayedTaskList",
-               "pxOverflowDelayedTaskList",
-               "xPendingReadyList",
-               "xTasksWaitingTermination",
-               "xSuspendedTaskList",
-               "uxCurrentNumberOfTasks",
-               NULL
+static char *FreeRTOS_symbol_list[] = {
+       "pxCurrentTCB",
+       "pxReadyTasksLists",
+       "xDelayedTaskList1",
+       "xDelayedTaskList2",
+       "pxDelayedTaskList",
+       "pxOverflowDelayedTaskList",
+       "xPendingReadyList",
+       "xTasksWaitingTermination",
+       "xSuspendedTaskList",
+       "uxCurrentNumberOfTasks",
+       "uxTopUsedPriority",
+       NULL
 };
 
-#define FREERTOS_NUM_SYMBOLS (sizeof(FreeRTOS_symbol_list)/sizeof(char*))
+#define FREERTOS_NUM_SYMBOLS (sizeof(FreeRTOS_symbol_list)/sizeof(char *))
 
-// TODO:
-// this is not safe for little endian yet
-// may be problems reading if sizes are not 32 bit long integers.
-// test mallocs for failure
+/* TODO: */
+/* this is not safe for little endian yet */
+/* may be problems reading if sizes are not 32 bit long integers. */
+/* test mallocs for failure */
 
-static int FreeRTOS_update_threads( struct rtos *rtos )
+static int FreeRTOS_update_threads(struct rtos *rtos)
 {
        int i = 0;
        int retval;
        int tasks_found = 0;
-       const struct FreeRTOS_paramsparam;
+       const struct FreeRTOS_params *param;
 
-       if (rtos->rtos_specific_params == NULL )
-       {
+       if (rtos->rtos_specific_params == NULL)
                return -1;
-       }
 
-       param = (const struct FreeRTOS_params*) rtos->rtos_specific_params;
+       param = (const struct FreeRTOS_params *) rtos->rtos_specific_params;
 
-       if ( rtos->symbols == NULL )
-       {
+       if (rtos->symbols == NULL) {
                LOG_OUTPUT("No symbols for FreeRTOS\r\n");
                return -3;
        }
 
-       if ( rtos->symbols[FreeRTOS_VAL_uxCurrentNumberOfTasks].address == 0 )
-       {
+       if (rtos->symbols[FreeRTOS_VAL_uxCurrentNumberOfTasks].address == 0) {
                LOG_OUTPUT("Don't have the number of threads in FreeRTOS \r\n");
                return -2;
        }
 
        int thread_list_size = 0;
-       retval = target_read_buffer( rtos->target, rtos->symbols[FreeRTOS_VAL_uxCurrentNumberOfTasks].address, param->thread_count_width, (uint8_t *)&thread_list_size);
+       retval = target_read_buffer(rtos->target,
+                       rtos->symbols[FreeRTOS_VAL_uxCurrentNumberOfTasks].address,
+                       param->thread_count_width,
+                       (uint8_t *)&thread_list_size);
 
-       if ( retval != ERROR_OK )
-       {
+       if (retval != ERROR_OK) {
                LOG_OUTPUT("Could not read FreeRTOS thread count from target\r\n");
                return retval;
        }
 
-
-       // wipe out previous thread details if any
-       if ( rtos->thread_details != NULL )
-       {
+       /* wipe out previous thread details if any */
+       if (rtos->thread_details != NULL) {
                int j;
-               for( j = 0; j < rtos->thread_count; j++ )
-               {
-                       if ( rtos->thread_details[j].display_str != NULL )
-                       {
-                               free( rtos->thread_details[j].display_str );
+               for (j = 0; j < rtos->thread_count; j++) {
+                       if (rtos->thread_details[j].display_str != NULL) {
+                               free(rtos->thread_details[j].display_str);
                                rtos->thread_details[j].display_str = NULL;
                        }
-                       if ( rtos->thread_details[j].thread_name_str != NULL )
-                       {
-                               free( rtos->thread_details[j].thread_name_str );
+                       if (rtos->thread_details[j].thread_name_str != NULL) {
+                               free(rtos->thread_details[j].thread_name_str);
                                rtos->thread_details[j].thread_name_str = NULL;
                        }
-                       if ( rtos->thread_details[j].extra_info_str != NULL )
-                       {
-                               free( rtos->thread_details[j].extra_info_str );
+                       if (rtos->thread_details[j].extra_info_str != NULL) {
+                               free(rtos->thread_details[j].extra_info_str);
                                rtos->thread_details[j].extra_info_str = NULL;
                        }
                }
-               free( rtos->thread_details );
+               free(rtos->thread_details);
                rtos->thread_details = NULL;
        }
 
-
-       // read the current thread
-       retval = target_read_buffer( rtos->target, rtos->symbols[FreeRTOS_VAL_pxCurrentTCB].address, param->pointer_width, (uint8_t *)&rtos->current_thread );
-       if ( retval != ERROR_OK )
-       {
+       /* read the current thread */
+       retval = target_read_buffer(rtos->target,
+                       rtos->symbols[FreeRTOS_VAL_pxCurrentTCB].address,
+                       param->pointer_width,
+                       (uint8_t *)&rtos->current_thread);
+       if (retval != ERROR_OK) {
                LOG_OUTPUT("Error reading current thread in FreeRTOS thread list\r\n");
                return retval;
        }
 
-       if ( ( thread_list_size  == 0 ) || ( rtos->current_thread == 0 ) )
-       {
-               // Either : No RTOS threads - there is always at least the current execution though
-               // OR     : No current thread - all threads suspended - show the current execution of idling
+       if ((thread_list_size  == 0) || (rtos->current_thread == 0)) {
+               /* Either : No RTOS threads - there is always at least the current execution though */
+               /* OR     : No current thread - all threads suspended - show the current execution
+                * of idling */
                char tmp_str[] = "Current Execution";
                thread_list_size++;
                tasks_found++;
-               rtos->thread_details = (struct thread_detail*) malloc( sizeof( struct thread_detail ) * thread_list_size );
+               rtos->thread_details = (struct thread_detail *) malloc(
+                               sizeof(struct thread_detail) * thread_list_size);
+               if (!rtos->thread_details) {
+                       LOG_ERROR("Error allocating memory for %d threads", thread_list_size);
+                       return ERROR_FAIL;
+               }
                rtos->thread_details->threadid = 1;
                rtos->thread_details->exists = true;
                rtos->thread_details->display_str = NULL;
                rtos->thread_details->extra_info_str = NULL;
-               rtos->thread_details->thread_name_str = (char*) malloc( sizeof(tmp_str) );
-               strcpy( rtos->thread_details->thread_name_str, tmp_str );
-
+               rtos->thread_details->thread_name_str = (char *) malloc(sizeof(tmp_str));
+               strcpy(rtos->thread_details->thread_name_str, tmp_str);
 
-               if ( thread_list_size == 1 )
-               {
+               if (thread_list_size == 1) {
                        rtos->thread_count = 1;
                        return ERROR_OK;
                }
+       } else {
+               /* create space for new thread details */
+               rtos->thread_details = (struct thread_detail *) malloc(
+                               sizeof(struct thread_detail) * thread_list_size);
+               if (!rtos->thread_details) {
+                       LOG_ERROR("Error allocating memory for %d threads", thread_list_size);
+                       return ERROR_FAIL;
+               }
        }
-       else
-       {
-               // create space for new thread details
-               rtos->thread_details = (struct thread_detail*) malloc( sizeof( struct thread_detail ) * thread_list_size );
-       }
-
-
-       // Unfortunately, we can't know how many lists there are for pxReadyTasksLists,
-       // So figure it out via other variables
-       int num_ready_task_lists = (rtos->symbols[FreeRTOS_VAL_xDelayedTaskList1].address - rtos->symbols[FreeRTOS_VAL_pxReadyTasksLists].address) / param->list_width;
 
-
-       symbol_address_t* list_of_lists = (symbol_address_t *)malloc( sizeof( symbol_address_t ) * ( num_ready_task_lists + 5 ) );
-
-       int num_lists;
-       for( num_lists = 0; num_lists < num_ready_task_lists; num_lists++ )
-       {
-               list_of_lists[num_lists] =  rtos->symbols[FreeRTOS_VAL_pxReadyTasksLists].address + num_lists * param->list_width;
+       /* Find out how many lists are needed to be read from pxReadyTasksLists, */
+       int64_t max_used_priority = 0;
+       retval = target_read_buffer(rtos->target,
+                       rtos->symbols[FreeRTOS_VAL_uxTopUsedPriority].address,
+                       param->pointer_width,
+                       (uint8_t *)&max_used_priority);
+       if (retval != ERROR_OK)
+               return retval;
+       if (max_used_priority > FREERTOS_MAX_PRIORITIES) {
+               LOG_ERROR("FreeRTOS maximum used priority is unreasonably big, not proceeding: %" PRId64 "",
+                       max_used_priority);
+               return ERROR_FAIL;
        }
 
-       list_of_lists[num_lists++] =  rtos->symbols[FreeRTOS_VAL_xDelayedTaskList1].address;
-       list_of_lists[num_lists++] =  rtos->symbols[FreeRTOS_VAL_xDelayedTaskList2].address;
-       list_of_lists[num_lists++] =  rtos->symbols[FreeRTOS_VAL_xPendingReadyList].address;
-       list_of_lists[num_lists++] =  rtos->symbols[FreeRTOS_VAL_xTasksWaitingTermination].address;
-
+       symbol_address_t *list_of_lists =
+               (symbol_address_t *)malloc(sizeof(symbol_address_t) *
+                       (max_used_priority+1 + 5));
+       if (!list_of_lists) {
+               LOG_ERROR("Error allocating memory for %" PRId64 " priorities", max_used_priority);
+               return ERROR_FAIL;
+       }
 
-       for( i = 0; i < num_lists; i++ )
-       {
-               if ( list_of_lists[i] == 0 )
-               {
+       int num_lists;
+       for (num_lists = 0; num_lists <= max_used_priority; num_lists++)
+               list_of_lists[num_lists] = rtos->symbols[FreeRTOS_VAL_pxReadyTasksLists].address +
+                       num_lists * param->list_width;
+
+       list_of_lists[num_lists++] = rtos->symbols[FreeRTOS_VAL_xDelayedTaskList1].address;
+       list_of_lists[num_lists++] = rtos->symbols[FreeRTOS_VAL_xDelayedTaskList2].address;
+       list_of_lists[num_lists++] = rtos->symbols[FreeRTOS_VAL_xPendingReadyList].address;
+       list_of_lists[num_lists++] = rtos->symbols[FreeRTOS_VAL_xSuspendedTaskList].address;
+       list_of_lists[num_lists++] = rtos->symbols[FreeRTOS_VAL_xTasksWaitingTermination].address;
+
+       for (i = 0; i < num_lists; i++) {
+               if (list_of_lists[i] == 0)
                        continue;
-               }
 
-               // Read the number of threads in this list
+               /* Read the number of threads in this list */
                int64_t list_thread_count = 0;
-               retval = target_read_buffer( rtos->target, list_of_lists[i], param->thread_count_width, (uint8_t *)&list_thread_count);
-               if ( retval != ERROR_OK )
-               {
+               retval = target_read_buffer(rtos->target,
+                               list_of_lists[i],
+                               param->thread_count_width,
+                               (uint8_t *)&list_thread_count);
+               if (retval != ERROR_OK) {
                        LOG_OUTPUT("Error reading number of threads in FreeRTOS thread list\r\n");
                        return retval;
                }
 
-               if ( list_thread_count == 0 )
-               {
+               if (list_thread_count == 0)
                        continue;
-               }
 
-               // Read the location of first list item
+               /* Read the location of first list item */
                uint64_t prev_list_elem_ptr = -1;
                uint64_t list_elem_ptr = 0;
-               retval = target_read_buffer( rtos->target, list_of_lists[i] + param->list_next_offset, param->pointer_width, (uint8_t *)&list_elem_ptr);
-               if ( retval != ERROR_OK )
-               {
-                       LOG_OUTPUT("Error reading first thread item location in FreeRTOS thread list\r\n");
+               retval = target_read_buffer(rtos->target,
+                               list_of_lists[i] + param->list_next_offset,
+                               param->pointer_width,
+                               (uint8_t *)&list_elem_ptr);
+               if (retval != ERROR_OK) {
+                       LOG_OUTPUT(
+                               "Error reading first thread item location in FreeRTOS thread list\r\n");
                        return retval;
                }
 
-
-               while ( (list_thread_count > 0) && ( list_elem_ptr != 0) && ( list_elem_ptr != prev_list_elem_ptr ) && ( tasks_found < thread_list_size ) )
-               {
-                       // Get the location of the thread structure.
+               while ((list_thread_count > 0) && (list_elem_ptr != 0) &&
+                               (list_elem_ptr != prev_list_elem_ptr) &&
+                               (tasks_found < thread_list_size)) {
+                       /* Get the location of the thread structure. */
                        rtos->thread_details[tasks_found].threadid = 0;
-                       retval = target_read_buffer( rtos->target, list_elem_ptr + param->list_elem_content_offset, param->pointer_width, (uint8_t *)&(rtos->thread_details[tasks_found].threadid));
-                       if ( retval != ERROR_OK )
-                       {
-                               LOG_OUTPUT("Error reading thread list item object in FreeRTOS thread list\r\n");
+                       retval = target_read_buffer(rtos->target,
+                                       list_elem_ptr + param->list_elem_content_offset,
+                                       param->pointer_width,
+                                       (uint8_t *)&(rtos->thread_details[tasks_found].threadid));
+                       if (retval != ERROR_OK) {
+                               LOG_OUTPUT(
+                                       "Error reading thread list item object in FreeRTOS thread list\r\n");
                                return retval;
                        }
 
-
-                       // get thread name
+                       /* get thread name */
 
                        #define FREERTOS_THREAD_NAME_STR_SIZE (200)
                        char tmp_str[FREERTOS_THREAD_NAME_STR_SIZE];
 
-                       // Read the thread name
-                       retval = target_read_buffer( rtos->target, rtos->thread_details[tasks_found].threadid + param->thread_name_offset, FREERTOS_THREAD_NAME_STR_SIZE, (uint8_t *)&tmp_str);
-                       if ( retval != ERROR_OK )
-                       {
-                               LOG_OUTPUT("Error reading first thread item location in FreeRTOS thread list\r\n");
+                       /* Read the thread name */
+                       retval = target_read_buffer(rtos->target,
+                                       rtos->thread_details[tasks_found].threadid + param->thread_name_offset,
+                                       FREERTOS_THREAD_NAME_STR_SIZE,
+                                       (uint8_t *)&tmp_str);
+                       if (retval != ERROR_OK) {
+                               LOG_OUTPUT(
+                                       "Error reading first thread item location in FreeRTOS thread list\r\n");
                                return retval;
                        }
                        tmp_str[FREERTOS_THREAD_NAME_STR_SIZE-1] = '\x00';
 
-                       if ( tmp_str[0] == '\x00' )
-                       {
-                               strcpy(tmp_str,"No Name");
-                       }
+                       if (tmp_str[0] == '\x00')
+                               strcpy(tmp_str, "No Name");
 
-                       rtos->thread_details[tasks_found].thread_name_str = (char*)malloc( strlen(tmp_str)+1 );
-                       strcpy( rtos->thread_details[tasks_found].thread_name_str, tmp_str );
+                       rtos->thread_details[tasks_found].thread_name_str =
+                               (char *)malloc(strlen(tmp_str)+1);
+                       strcpy(rtos->thread_details[tasks_found].thread_name_str, tmp_str);
                        rtos->thread_details[tasks_found].display_str = NULL;
                        rtos->thread_details[tasks_found].exists = true;
 
-                       if ( rtos->thread_details[tasks_found].threadid == rtos->current_thread )
-                       {
+                       if (rtos->thread_details[tasks_found].threadid == rtos->current_thread) {
                                char running_str[] = "Running";
-                               rtos->thread_details[tasks_found].extra_info_str = (char*) malloc( sizeof(running_str) );
-                               strcpy( rtos->thread_details[tasks_found].extra_info_str, running_str );
-                       }
-                       else
-                       {
+                               rtos->thread_details[tasks_found].extra_info_str = (char *) malloc(
+                                               sizeof(running_str));
+                               strcpy(rtos->thread_details[tasks_found].extra_info_str,
+                                       running_str);
+                       } else
                                rtos->thread_details[tasks_found].extra_info_str = NULL;
-                       }
-
 
                        tasks_found++;
                        list_thread_count--;
 
                        prev_list_elem_ptr = list_elem_ptr;
                        list_elem_ptr = 0;
-                       retval = target_read_buffer( rtos->target, prev_list_elem_ptr + param->list_elem_next_offset, param->pointer_width, (uint8_t *)&list_elem_ptr);
-                       if ( retval != ERROR_OK )
-                       {
-                               LOG_OUTPUT("Error reading next thread item location in FreeRTOS thread list\r\n");
+                       retval = target_read_buffer(rtos->target,
+                                       prev_list_elem_ptr + param->list_elem_next_offset,
+                                       param->pointer_width,
+                                       (uint8_t *)&list_elem_ptr);
+                       if (retval != ERROR_OK) {
+                               LOG_OUTPUT(
+                                       "Error reading next thread item location in FreeRTOS thread list\r\n");
                                return retval;
                        }
                }
-
-
        }
-       free( list_of_lists );
+       free(list_of_lists);
        rtos->thread_count = tasks_found;
        return 0;
 }
 
-static int FreeRTOS_get_thread_reg_list(struct rtos *rtos, int64_t thread_id, char ** hex_reg_list )
+static int FreeRTOS_get_thread_reg_list(struct rtos *rtos, int64_t thread_id, char **hex_reg_list)
 {
        int retval;
-       const struct FreeRTOS_paramsparam;
+       const struct FreeRTOS_params *param;
        int64_t stack_ptr = 0;
 
-
        *hex_reg_list = NULL;
-       if ( rtos == NULL )
-       {
+       if (rtos == NULL)
                return -1;
-       }
 
-       if ( thread_id == 0 )
-       {
+       if (thread_id == 0)
                return -2;
-       }
 
-       if (rtos->rtos_specific_params == NULL )
-       {
+       if (rtos->rtos_specific_params == NULL)
                return -1;
-       }
 
-       param = (const struct FreeRTOS_params*) rtos->rtos_specific_params;
+       param = (const struct FreeRTOS_params *) rtos->rtos_specific_params;
 
-       // Read the stack pointer
-       retval = target_read_buffer( rtos->target, thread_id + param->thread_stack_offset, param->pointer_width, (uint8_t*)&stack_ptr);
-       if ( retval != ERROR_OK )
-       {
+       /* Read the stack pointer */
+       retval = target_read_buffer(rtos->target,
+                       thread_id + param->thread_stack_offset,
+                       param->pointer_width,
+                       (uint8_t *)&stack_ptr);
+       if (retval != ERROR_OK) {
                LOG_OUTPUT("Error reading stack frame from FreeRTOS thread\r\n");
                return retval;
        }
 
-       return rtos_generic_stack_read( rtos->target, param->stacking_info, stack_ptr, hex_reg_list );
+       return rtos_generic_stack_read(rtos->target, param->stacking_info, stack_ptr, hex_reg_list);
 
 }
 
-static int FreeRTOS_get_symbol_list_to_lookup(symbol_table_elem_t * symbol_list[])
+static int FreeRTOS_get_symbol_list_to_lookup(symbol_table_elem_t *symbol_list[])
 {
        unsigned int i;
-       *symbol_list = (symbol_table_elem_t *) malloc( sizeof( symbol_table_elem_t ) * FREERTOS_NUM_SYMBOLS );
+       *symbol_list = (symbol_table_elem_t *) malloc(
+                       sizeof(symbol_table_elem_t) * FREERTOS_NUM_SYMBOLS);
 
-       for( i = 0; i < FREERTOS_NUM_SYMBOLS; i++ )
-       {
+       for (i = 0; i < FREERTOS_NUM_SYMBOLS; i++)
                (*symbol_list)[i].symbol_name = FreeRTOS_symbol_list[i];
-       }
 
        return 0;
 }
@@ -402,80 +400,68 @@ static int FreeRTOS_set_current_thread(struct rtos *rtos, threadid_t thread_id)
        return 0;
 }
 
-
-
-static int FreeRTOS_get_thread_ascii_info( struct rtos*   rtos, threadid_t   thread_id, char ** info )
+static int FreeRTOS_get_thread_ascii_info(struct rtos *rtos, threadid_t thread_id, char **info)
 {
        int retval;
-       const struct FreeRTOS_paramsparam;
+       const struct FreeRTOS_params *param;
 
-       if ( rtos == NULL )
-       {
+       if (rtos == NULL)
                return -1;
-       }
 
-       if ( thread_id == 0 )
-       {
+       if (thread_id == 0)
                return -2;
-       }
 
-       if (rtos->rtos_specific_params == NULL )
-       {
+       if (rtos->rtos_specific_params == NULL)
                return -3;
-       }
 
-       param = (const struct FreeRTOS_params*) rtos->rtos_specific_params;
+       param = (const struct FreeRTOS_params *) rtos->rtos_specific_params;
 
 #define FREERTOS_THREAD_NAME_STR_SIZE (200)
        char tmp_str[FREERTOS_THREAD_NAME_STR_SIZE];
 
-       // Read the thread name
-       retval = target_read_buffer( rtos->target, thread_id + param->thread_name_offset, FREERTOS_THREAD_NAME_STR_SIZE, (uint8_t *)&tmp_str);
-       if ( retval != ERROR_OK )
-       {
+       /* Read the thread name */
+       retval = target_read_buffer(rtos->target,
+                       thread_id + param->thread_name_offset,
+                       FREERTOS_THREAD_NAME_STR_SIZE,
+                       (uint8_t *)&tmp_str);
+       if (retval != ERROR_OK) {
                LOG_OUTPUT("Error reading first thread item location in FreeRTOS thread list\r\n");
                return retval;
        }
        tmp_str[FREERTOS_THREAD_NAME_STR_SIZE-1] = '\x00';
 
-       if ( tmp_str[0] == '\x00' )
-       {
-               strcpy(tmp_str,"No Name");
-       }
+       if (tmp_str[0] == '\x00')
+               strcpy(tmp_str, "No Name");
 
-       *info = (char*)malloc( strlen(tmp_str)+1 );
-       strcpy( *info, tmp_str );
+       *info = (char *)malloc(strlen(tmp_str)+1);
+       strcpy(*info, tmp_str);
        return 0;
 }
 
 #endif
 
-static int FreeRTOS_detect_rtos( struct target* target )
+static int FreeRTOS_detect_rtos(struct target *target)
 {
-       if ( ( target->rtos->symbols != NULL ) &&
-                ( target->rtos->symbols[FreeRTOS_VAL_pxReadyTasksLists].address != 0 ) )
-       {
-               // looks like FreeRTOS
+       if ((target->rtos->symbols != NULL) &&
+                       (target->rtos->symbols[FreeRTOS_VAL_pxReadyTasksLists].address != 0)) {
+               /* looks like FreeRTOS */
                return 1;
        }
        return 0;
-       return 0;
 }
 
-
-static int FreeRTOS_create( struct target* target )
+static int FreeRTOS_create(struct target *target)
 {
        int i = 0;
-       while ( ( i < FREERTOS_NUM_PARAMS ) && ( 0 != strcmp( FreeRTOS_params_list[i].target_name, target->type->name ) ) )
-       {
+       while ((i < FREERTOS_NUM_PARAMS) &&
+                       (0 != strcmp(FreeRTOS_params_list[i].target_name, target->type->name))) {
                i++;
        }
-       if ( i >= FREERTOS_NUM_PARAMS )
-       {
+       if (i >= FREERTOS_NUM_PARAMS) {
                LOG_OUTPUT("Could not find target in FreeRTOS compatibility list\r\n");
                return -1;
        }
 
-       target->rtos->rtos_specific_params = (void*) &FreeRTOS_params_list[i];
+       target->rtos->rtos_specific_params = (void *) &FreeRTOS_params_list[i];
        return 0;
 }

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