482 lines
14 KiB
C
482 lines
14 KiB
C
/***************************************************************************
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* Copyright (C) 2011 by Broadcom Corporation *
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* Evan Hunter - ehunter@broadcom.com *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, write to the *
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* Free Software Foundation, Inc., *
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* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
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***************************************************************************/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <helper/time_support.h>
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#include <jtag/jtag.h>
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#include "target/target.h"
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#include "target/target_type.h"
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#include "rtos.h"
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#include "helper/log.h"
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#include "rtos_standard_stackings.h"
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#define FreeRTOS_STRUCT( int_type, ptr_type, list_prev_offset )
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struct FreeRTOS_params
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{
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const char * target_name;
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const unsigned char thread_count_width;
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const unsigned char pointer_width;
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const unsigned char list_next_offset;
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const unsigned char list_width;
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const unsigned char list_elem_next_offset;
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const unsigned char list_elem_content_offset;
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const unsigned char thread_stack_offset;
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const unsigned char thread_name_offset;
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const struct rtos_register_stacking* stacking_info;
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};
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const struct FreeRTOS_params FreeRTOS_params_list[] =
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{
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{ "cortex_m3", // target_name
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4, // thread_count_width;
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4, // pointer_width;
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16, // list_next_offset;
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20, // list_width;
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8, // list_elem_next_offset;
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12, // list_elem_content_offset
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0, // thread_stack_offset;
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52, // thread_name_offset;
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&rtos_standard_Cortex_M3_stacking, // stacking_info
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}
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};
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#define FREERTOS_NUM_PARAMS ((int)(sizeof(FreeRTOS_params_list)/sizeof(struct FreeRTOS_params)))
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static int FreeRTOS_detect_rtos( struct target* target );
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static int FreeRTOS_create( struct target* target );
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static int FreeRTOS_update_threads( struct rtos *rtos );
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static int FreeRTOS_get_thread_reg_list(struct rtos *rtos, long long thread_id, char ** hex_reg_list );
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static int FreeRTOS_get_symbol_list_to_lookup(symbol_table_elem_t * symbol_list[]);
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struct rtos_type FreeRTOS_rtos =
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{
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.name = "FreeRTOS",
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.detect_rtos = FreeRTOS_detect_rtos,
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.create = FreeRTOS_create,
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.update_threads = FreeRTOS_update_threads,
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.get_thread_reg_list = FreeRTOS_get_thread_reg_list,
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.get_symbol_list_to_lookup = FreeRTOS_get_symbol_list_to_lookup,
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};
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enum FreeRTOS_symbol_values
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{
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FreeRTOS_VAL_pxCurrentTCB = 0,
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FreeRTOS_VAL_pxReadyTasksLists = 1,
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FreeRTOS_VAL_xDelayedTaskList1 = 2,
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FreeRTOS_VAL_xDelayedTaskList2 = 3,
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FreeRTOS_VAL_pxDelayedTaskList = 4,
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FreeRTOS_VAL_pxOverflowDelayedTaskList = 5,
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FreeRTOS_VAL_xPendingReadyList = 6,
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FreeRTOS_VAL_xTasksWaitingTermination = 7,
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FreeRTOS_VAL_xSuspendedTaskList = 8,
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FreeRTOS_VAL_uxCurrentNumberOfTasks = 9,
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};
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static char* FreeRTOS_symbol_list[] =
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{
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"pxCurrentTCB",
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"pxReadyTasksLists",
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"xDelayedTaskList1",
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"xDelayedTaskList2",
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"pxDelayedTaskList",
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"pxOverflowDelayedTaskList",
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"xPendingReadyList",
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"xTasksWaitingTermination",
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"xSuspendedTaskList",
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"uxCurrentNumberOfTasks",
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NULL
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};
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#define FREERTOS_NUM_SYMBOLS (sizeof(FreeRTOS_symbol_list)/sizeof(char*))
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// TODO:
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// this is not safe for little endian yet
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// may be problems reading if sizes are not 32 bit long integers.
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// test mallocs for failure
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static int FreeRTOS_update_threads( struct rtos *rtos )
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{
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int i = 0;
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int retval;
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int tasks_found = 0;
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const struct FreeRTOS_params* param;
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if (rtos->rtos_specific_params == NULL )
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{
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return -1;
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}
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param = (const struct FreeRTOS_params*) rtos->rtos_specific_params;
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if ( rtos->symbols == NULL )
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{
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LOG_OUTPUT("No symbols for FreeRTOS\r\n");
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return -3;
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}
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if ( rtos->symbols[FreeRTOS_VAL_uxCurrentNumberOfTasks].address == 0 )
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{
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LOG_OUTPUT("Don't have the number of threads in FreeRTOS \r\n");
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return -2;
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}
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int thread_list_size = 0;
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retval = target_read_buffer( rtos->target, rtos->symbols[FreeRTOS_VAL_uxCurrentNumberOfTasks].address, param->thread_count_width, (uint8_t *)&thread_list_size);
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if ( retval != ERROR_OK )
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{
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LOG_OUTPUT("Could not read FreeRTOS thread count from target\r\n");
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return retval;
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}
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// wipe out previous thread details if any
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if ( rtos->thread_details != NULL )
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{
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int j;
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for( j = 0; j < rtos->thread_count; j++ )
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{
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if ( rtos->thread_details[j].display_str != NULL )
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{
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free( rtos->thread_details[j].display_str );
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rtos->thread_details[j].display_str = NULL;
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}
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if ( rtos->thread_details[j].thread_name_str != NULL )
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{
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free( rtos->thread_details[j].thread_name_str );
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rtos->thread_details[j].thread_name_str = NULL;
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}
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if ( rtos->thread_details[j].extra_info_str != NULL )
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{
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free( rtos->thread_details[j].extra_info_str );
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rtos->thread_details[j].extra_info_str = NULL;
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}
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}
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free( rtos->thread_details );
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rtos->thread_details = NULL;
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}
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// read the current thread
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retval = target_read_buffer( rtos->target, rtos->symbols[FreeRTOS_VAL_pxCurrentTCB].address, param->pointer_width, (uint8_t *)&rtos->current_thread );
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if ( retval != ERROR_OK )
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{
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LOG_OUTPUT("Error reading current thread in FreeRTOS thread list\r\n");
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return retval;
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}
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if ( ( thread_list_size == 0 ) || ( rtos->current_thread == 0 ) )
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{
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// Either : No RTOS threads - there is always at least the current execution though
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// OR : No current thread - all threads suspended - show the current execution of idling
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char tmp_str[] = "Current Execution";
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thread_list_size++;
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tasks_found++;
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rtos->thread_details = (struct thread_detail*) malloc( sizeof( struct thread_detail ) * thread_list_size );
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rtos->thread_details->threadid = 1;
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rtos->thread_details->exists = true;
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rtos->thread_details->display_str = NULL;
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rtos->thread_details->extra_info_str = NULL;
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rtos->thread_details->thread_name_str = (char*) malloc( sizeof(tmp_str) );
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strcpy( rtos->thread_details->thread_name_str, tmp_str );
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if ( thread_list_size == 1 )
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{
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rtos->thread_count = 1;
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return ERROR_OK;
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}
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}
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else
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{
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// create space for new thread details
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rtos->thread_details = (struct thread_detail*) malloc( sizeof( struct thread_detail ) * thread_list_size );
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}
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// Unfortunately, we can't know how many lists there are for pxReadyTasksLists,
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// So figure it out via other variables
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int num_ready_task_lists = (rtos->symbols[FreeRTOS_VAL_xDelayedTaskList1].address - rtos->symbols[FreeRTOS_VAL_pxReadyTasksLists].address) / param->list_width;
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symbol_address_t* list_of_lists = (symbol_address_t *)malloc( sizeof( symbol_address_t ) * ( num_ready_task_lists + 5 ) );
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int num_lists;
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for( num_lists = 0; num_lists < num_ready_task_lists; num_lists++ )
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{
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list_of_lists[num_lists] = rtos->symbols[FreeRTOS_VAL_pxReadyTasksLists].address + num_lists * param->list_width;
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}
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list_of_lists[num_lists++] = rtos->symbols[FreeRTOS_VAL_xDelayedTaskList1].address;
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list_of_lists[num_lists++] = rtos->symbols[FreeRTOS_VAL_xDelayedTaskList2].address;
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list_of_lists[num_lists++] = rtos->symbols[FreeRTOS_VAL_xPendingReadyList].address;
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list_of_lists[num_lists++] = rtos->symbols[FreeRTOS_VAL_xTasksWaitingTermination].address;
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for( i = 0; i < num_lists; i++ )
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{
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if ( list_of_lists[i] == 0 )
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{
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continue;
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}
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// Read the number of threads in this list
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long long list_thread_count = 0;
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retval = target_read_buffer( rtos->target, list_of_lists[i], param->thread_count_width, (uint8_t *)&list_thread_count);
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if ( retval != ERROR_OK )
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{
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LOG_OUTPUT("Error reading number of threads in FreeRTOS thread list\r\n");
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return retval;
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}
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if ( list_thread_count == 0 )
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{
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continue;
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}
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// Read the location of first list item
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unsigned long long prev_list_elem_ptr = -1;
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unsigned long long list_elem_ptr = 0;
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retval = target_read_buffer( rtos->target, list_of_lists[i] + param->list_next_offset, param->pointer_width, (uint8_t *)&list_elem_ptr);
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if ( retval != ERROR_OK )
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{
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LOG_OUTPUT("Error reading first thread item location in FreeRTOS thread list\r\n");
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return retval;
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}
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while ( (list_thread_count > 0) && ( list_elem_ptr != 0) && ( list_elem_ptr != prev_list_elem_ptr ) && ( tasks_found < thread_list_size ) )
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{
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// Get the location of the thread structure.
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rtos->thread_details[tasks_found].threadid = 0;
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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));
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if ( retval != ERROR_OK )
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{
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LOG_OUTPUT("Error reading thread list item object in FreeRTOS thread list\r\n");
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return retval;
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}
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// get thread name
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#define FREERTOS_THREAD_NAME_STR_SIZE (200)
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char tmp_str[FREERTOS_THREAD_NAME_STR_SIZE];
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// Read the thread name
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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);
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if ( retval != ERROR_OK )
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{
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LOG_OUTPUT("Error reading first thread item location in FreeRTOS thread list\r\n");
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return retval;
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}
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tmp_str[FREERTOS_THREAD_NAME_STR_SIZE-1] = '\x00';
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if ( tmp_str[0] == '\x00' )
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{
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strcpy(tmp_str,"No Name");
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}
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rtos->thread_details[tasks_found].thread_name_str = (char*)malloc( strlen(tmp_str)+1 );
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strcpy( rtos->thread_details[tasks_found].thread_name_str, tmp_str );
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rtos->thread_details[tasks_found].display_str = NULL;
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rtos->thread_details[tasks_found].exists = true;
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if ( rtos->thread_details[tasks_found].threadid == rtos->current_thread )
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{
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char running_str[] = "Running";
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rtos->thread_details[tasks_found].extra_info_str = (char*) malloc( sizeof(running_str) );
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strcpy( rtos->thread_details[tasks_found].extra_info_str, running_str );
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}
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else
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{
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rtos->thread_details[tasks_found].extra_info_str = NULL;
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}
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tasks_found++;
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list_thread_count--;
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prev_list_elem_ptr = list_elem_ptr;
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list_elem_ptr = 0;
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retval = target_read_buffer( rtos->target, prev_list_elem_ptr + param->list_elem_next_offset, param->pointer_width, (uint8_t *)&list_elem_ptr);
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if ( retval != ERROR_OK )
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{
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LOG_OUTPUT("Error reading next thread item location in FreeRTOS thread list\r\n");
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return retval;
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}
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}
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}
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free( list_of_lists );
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rtos->thread_count = tasks_found;
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return 0;
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}
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static int FreeRTOS_get_thread_reg_list(struct rtos *rtos, long long thread_id, char ** hex_reg_list )
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{
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int retval;
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const struct FreeRTOS_params* param;
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long long stack_ptr = 0;
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*hex_reg_list = NULL;
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if ( rtos == NULL )
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{
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return -1;
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}
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if ( thread_id == 0 )
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{
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return -2;
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}
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if (rtos->rtos_specific_params == NULL )
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{
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return -1;
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}
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param = (const struct FreeRTOS_params*) rtos->rtos_specific_params;
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// Read the stack pointer
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retval = target_read_buffer( rtos->target, thread_id + param->thread_stack_offset, param->pointer_width, (uint8_t*)&stack_ptr);
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if ( retval != ERROR_OK )
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{
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LOG_OUTPUT("Error reading stack frame from FreeRTOS thread\r\n");
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return retval;
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}
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return rtos_generic_stack_read( rtos->target, param->stacking_info, stack_ptr, hex_reg_list );
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}
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static int FreeRTOS_get_symbol_list_to_lookup(symbol_table_elem_t * symbol_list[])
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{
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unsigned int i;
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*symbol_list = (symbol_table_elem_t *) malloc( sizeof( symbol_table_elem_t ) * FREERTOS_NUM_SYMBOLS );
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for( i = 0; i < FREERTOS_NUM_SYMBOLS; i++ )
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{
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(*symbol_list)[i].symbol_name = FreeRTOS_symbol_list[i];
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}
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return 0;
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}
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#if 0
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static int FreeRTOS_set_current_thread(struct rtos *rtos, threadid_t thread_id)
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{
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return 0;
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}
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static int FreeRTOS_get_thread_ascii_info( struct rtos* rtos, threadid_t thread_id, char ** info )
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{
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int retval;
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const struct FreeRTOS_params* param;
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if ( rtos == NULL )
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{
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return -1;
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}
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if ( thread_id == 0 )
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{
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return -2;
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}
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if (rtos->rtos_specific_params == NULL )
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{
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return -3;
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}
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param = (const struct FreeRTOS_params*) rtos->rtos_specific_params;
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#define FREERTOS_THREAD_NAME_STR_SIZE (200)
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char tmp_str[FREERTOS_THREAD_NAME_STR_SIZE];
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// Read the thread name
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retval = target_read_buffer( rtos->target, thread_id + param->thread_name_offset, FREERTOS_THREAD_NAME_STR_SIZE, (uint8_t *)&tmp_str);
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if ( retval != ERROR_OK )
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{
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LOG_OUTPUT("Error reading first thread item location in FreeRTOS thread list\r\n");
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return retval;
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}
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tmp_str[FREERTOS_THREAD_NAME_STR_SIZE-1] = '\x00';
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if ( tmp_str[0] == '\x00' )
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{
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strcpy(tmp_str,"No Name");
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}
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*info = (char*)malloc( strlen(tmp_str)+1 );
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strcpy( *info, tmp_str );
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return 0;
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}
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#endif
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static int FreeRTOS_detect_rtos( struct target* target )
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{
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if ( ( target->rtos->symbols != NULL ) &&
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( target->rtos->symbols[FreeRTOS_VAL_pxReadyTasksLists].address != 0 ) )
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{
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// looks like FreeRTOS
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return 1;
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}
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return 0;
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return 0;
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}
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static int FreeRTOS_create( struct target* target )
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{
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int i = 0;
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while ( ( i < FREERTOS_NUM_PARAMS ) && ( 0 != strcmp( FreeRTOS_params_list[i].target_name, target->type->name ) ) )
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{
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i++;
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}
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if ( i >= FREERTOS_NUM_PARAMS )
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{
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LOG_OUTPUT("Could not find target in FreeRTOS compatability list\r\n");
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return -1;
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}
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target->rtos->rtos_specific_params = (void*) &FreeRTOS_params_list[i];
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return 0;
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}
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