Commit a57daf23 authored by Alan Bowman's avatar Alan Bowman Committed by Øyvind Harboe
Browse files

Add eCos/Cortex RTOS support

parent 6d6837f9
......@@ -23,7 +23,7 @@ include $(top_srcdir)/common.mk
METASOURCES = AUTO
noinst_LTLIBRARIES = librtos.la
noinst_HEADERS = rtos.h
librtos_la_SOURCES = rtos.c rtos_standard_stackings.c FreeRTOS.c ThreadX.c
librtos_la_SOURCES = rtos.c rtos_standard_stackings.c rtos_ecos_stackings.c FreeRTOS.c ThreadX.c eCos.c
librtos_la_CFLAGS =
......
/***************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the *
* Free Software Foundation, Inc., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
***************************************************************************/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <helper/time_support.h>
#include <jtag/jtag.h>
#include "target/target.h"
#include "target/target_type.h"
#include "rtos.h"
#include "helper/log.h"
#include "rtos_ecos_stackings.h"
static int eCos_detect_rtos( struct target* target );
static int eCos_create( struct target* target );
static int eCos_update_threads( struct rtos* rtos);
static int eCos_get_thread_reg_list(struct rtos *rtos, int64_t thread_id, char ** hex_reg_list );
static int eCos_get_symbol_list_to_lookup(symbol_table_elem_t * symbol_list[]);
struct eCos_thread_state
{
int value;
char * desc;
};
struct eCos_thread_state eCos_thread_states[] =
{
{ 0, "Ready" },
{ 1, "Sleeping" },
{ 2, "Countsleep" },
{ 4, "Suspended" },
{ 8, "Creating" },
{ 16, "Exited" }
};
#define ECOS_NUM_STATES (sizeof(eCos_thread_states)/sizeof(struct eCos_thread_state))
struct eCos_params
{
char * target_name;
unsigned char pointer_width;
unsigned char thread_stack_offset;
unsigned char thread_name_offset;
unsigned char thread_state_offset;
unsigned char thread_next_offset;
unsigned char thread_uniqueid_offset;
const struct rtos_register_stacking* stacking_info;
};
const struct eCos_params eCos_params_list[] =
{
{ "cortex_m3", // target_name
4, // pointer_width;
0x0c, // thread_stack_offset;
0x9c, // thread_name_offset;
0x3c, // thread_state_offset;
0xa0, // thread_next_offset
0x4c, // thread_uniqueid_offset
&rtos_eCos_Cortex_M3_stacking // stacking_info
}
};
#define ECOS_NUM_PARAMS ((int)(sizeof(eCos_params_list)/sizeof(struct eCos_params)))
enum eCos_symbol_values
{
eCos_VAL_thread_list = 0,
eCos_VAL_current_thread_ptr = 1
};
static char* eCos_symbol_list[] =
{
"Cyg_Thread::thread_list",
"Cyg_Scheduler_Base::current_thread",
NULL
};
#define ECOS_NUM_SYMBOLS (sizeof(eCos_symbol_list)/sizeof(char*))
const struct rtos_type eCos_rtos =
{
.name = "eCos",
.detect_rtos = eCos_detect_rtos,
.create = eCos_create,
.update_threads = eCos_update_threads,
.get_thread_reg_list = eCos_get_thread_reg_list,
.get_symbol_list_to_lookup = eCos_get_symbol_list_to_lookup,
};
static int eCos_update_threads( struct rtos* rtos)
{
int retval;
int tasks_found = 0;
int thread_list_size = 0;
const struct eCos_params* param;
if ( rtos == NULL )
{
return -1;
}
if (rtos->rtos_specific_params == NULL )
{
return -3;
}
param = (const struct eCos_params*) rtos->rtos_specific_params;
if ( rtos->symbols == NULL )
{
LOG_OUTPUT("No symbols for eCos\r\n");
return -4;
}
if ( rtos->symbols[eCos_VAL_thread_list].address == 0 )
{
LOG_OUTPUT("Don't have the thread list head\r\n");
return -2;
}
// 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 );
rtos->thread_details[j].display_str = NULL;
}
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 );
rtos->thread_details[j].extra_info_str = NULL;
}
}
free( rtos->thread_details );
rtos->thread_details = NULL;
}
// determine the number of current threads
uint32_t thread_list_head = rtos->symbols[eCos_VAL_thread_list].address;
uint32_t thread_index;
target_read_buffer( rtos->target, thread_list_head, param->pointer_width, (uint8_t *) &thread_index );
uint32_t first_thread = thread_index;
do
{
thread_list_size++;
retval = target_read_buffer( rtos->target, thread_index + param->thread_next_offset, param->pointer_width, (uint8_t *) &thread_index );
} while( thread_index!=first_thread );
// read the current thread id
uint32_t current_thread_addr;
retval = target_read_buffer( rtos->target, rtos->symbols[eCos_VAL_current_thread_ptr].address, 4, (uint8_t *)&current_thread_addr);
rtos->current_thread = 0;
retval = target_read_buffer( rtos->target, current_thread_addr + param->thread_uniqueid_offset, 2, (uint8_t *)&rtos->current_thread);
if ( retval != ERROR_OK )
{
LOG_OUTPUT("Could not read eCos current thread from target\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
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->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 );
if ( thread_list_size == 0 )
{
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 );
}
// loop over all threads
thread_index = first_thread;
do
{
#define ECOS_THREAD_NAME_STR_SIZE (200)
char tmp_str[ECOS_THREAD_NAME_STR_SIZE];
unsigned int i = 0;
uint32_t name_ptr = 0;
uint32_t prev_thread_ptr;
// Save the thread pointer
uint16_t thread_id;
retval = target_read_buffer( rtos->target, thread_index + param->thread_uniqueid_offset, 2, (uint8_t *)&thread_id);
if ( retval != ERROR_OK )
{
LOG_OUTPUT("Could not read eCos thread id from target\r\n");
return retval;
}
rtos->thread_details[tasks_found].threadid = thread_id;
// read the name pointer
retval = target_read_buffer( rtos->target, thread_index + param->thread_name_offset, param->pointer_width, (uint8_t *)&name_ptr);
if ( retval != ERROR_OK )
{
LOG_OUTPUT("Could not read eCos thread name pointer from target\r\n");
return retval;
}
// Read the thread name
retval = target_read_buffer( rtos->target, name_ptr, ECOS_THREAD_NAME_STR_SIZE, (uint8_t *)&tmp_str);
if ( retval != ERROR_OK )
{
LOG_OUTPUT("Error reading thread name from eCos target\r\n");
return retval;
}
tmp_str[ECOS_THREAD_NAME_STR_SIZE-1] = '\x00';
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 );
// Read the thread status
int64_t thread_status = 0;
retval = target_read_buffer( rtos->target, thread_index + param->thread_state_offset, 4, (uint8_t *)&thread_status);
if ( retval != ERROR_OK )
{
LOG_OUTPUT("Error reading thread state from eCos target\r\n");
return retval;
}
for( i = 0; (i < ECOS_NUM_STATES) && (eCos_thread_states[i].value!=thread_status); i++ )
{
}
char * state_desc;
if (i < ECOS_NUM_STATES)
{
state_desc = eCos_thread_states[i].desc;
}
else
{
state_desc = "Unknown state";
}
rtos->thread_details[tasks_found].extra_info_str = (char*)malloc( strlen(state_desc)+1 );
strcpy( rtos->thread_details[tasks_found].extra_info_str, state_desc );
rtos->thread_details[tasks_found].exists = true;
rtos->thread_details[tasks_found].display_str = NULL;
tasks_found++;
prev_thread_ptr = thread_index;
// Get the location of the next thread structure.
thread_index = rtos->symbols[eCos_VAL_thread_list].address;
retval = target_read_buffer( rtos->target, prev_thread_ptr + param->thread_next_offset, param->pointer_width, (uint8_t *) &thread_index );
if ( retval != ERROR_OK )
{
LOG_OUTPUT("Error reading next thread pointer in eCos thread list\r\n");
return retval;
}
}
while( thread_index!=first_thread );
rtos->thread_count = tasks_found;
return 0;
}
static int eCos_get_thread_reg_list(struct rtos *rtos, int64_t thread_id, char ** hex_reg_list )
{
int retval;
const struct eCos_params* param;
*hex_reg_list = NULL;
if ( rtos == NULL )
{
return -1;
}
if ( thread_id == 0 )
{
return -2;
}
if (rtos->rtos_specific_params == NULL )
{
return -3;
}
param = (const struct eCos_params*) rtos->rtos_specific_params;
// Find the thread with that thread id
uint16_t id=0;
uint32_t thread_list_head = rtos->symbols[eCos_VAL_thread_list].address;
uint32_t thread_index;
target_read_buffer( rtos->target, thread_list_head, param->pointer_width, (uint8_t *) &thread_index );
bool done=false;
while(!done)
{
retval = target_read_buffer( rtos->target, thread_index + param->thread_uniqueid_offset, 2, (uint8_t*)&id);
if ( retval != ERROR_OK )
{
LOG_OUTPUT("Error reading unique id from eCos thread\r\n");
return retval;
}
if( id==thread_id )
{
done=true;
break;
}
target_read_buffer( rtos->target, thread_index + param->thread_next_offset, param->pointer_width, (uint8_t *) &thread_index );
}
if(done)
{
// Read the stack pointer
int64_t stack_ptr = 0;
retval = target_read_buffer( rtos->target, thread_index + param->thread_stack_offset, param->pointer_width, (uint8_t*)&stack_ptr);
if ( retval != ERROR_OK )
{
LOG_OUTPUT("Error reading stack frame from eCos thread\r\n");
return retval;
}
return rtos_generic_stack_read( rtos->target, param->stacking_info, stack_ptr, hex_reg_list );
}
return -1;
}
static int eCos_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 ) * ECOS_NUM_SYMBOLS );
for( i = 0; i < ECOS_NUM_SYMBOLS; i++ )
{
(*symbol_list)[i].symbol_name = eCos_symbol_list[i];
}
return 0;
}
static int eCos_detect_rtos( struct target* target )
{
if ( ( target->rtos->symbols != NULL ) &&
( target->rtos->symbols[eCos_VAL_thread_list].address != 0 ) )
{
// looks like eCos
return 1;
}
return 0;
}
static int eCos_create( struct target* target )
{
int i = 0;
while ( ( i < ECOS_NUM_PARAMS ) && ( 0 != strcmp( eCos_params_list[i].target_name, target->type->name ) ) )
{
i++;
}
if ( i >= ECOS_NUM_PARAMS )
{
LOG_OUTPUT("Could not find target in eCos compatability list\r\n");
return -1;
}
target->rtos->rtos_specific_params = (void*) &eCos_params_list[i];
target->rtos->current_thread = 0;
target->rtos->thread_details = NULL;
return 0;
}
......@@ -38,11 +38,13 @@ static int str_to_hex( char* hex_dst, char* src );
/* RTOSs */
extern struct rtos_type FreeRTOS_rtos;
extern struct rtos_type ThreadX_rtos;
extern struct rtos_type eCos_rtos;
static struct rtos_type *rtos_types[] =
{
&ThreadX_rtos,
&FreeRTOS_rtos,
&eCos_rtos,
NULL
};
......
/***************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the *
* Free Software Foundation, Inc., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
***************************************************************************/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "rtos.h"
static const struct stack_register_offset rtos_eCos_Cortex_M3_stack_offsets [] =
{ { 0x0c, 32 }, // r0
{ 0x10, 32 }, // r1
{ 0x14, 32 }, // r2
{ 0x18, 32 }, // r3
{ 0x1c, 32 }, // r4
{ 0x20, 32 }, // r5
{ 0x24, 32 }, // r6
{ 0x28, 32 }, // r7
{ 0x2c, 32 }, // r8
{ 0x30, 32 }, // r9
{ 0x34, 32 }, // r10
{ 0x38, 32 }, // r11
{ 0x3c, 32 }, // r12
{ -2, 32 }, // sp
{ -1, 32 }, // lr
{ 0x40, 32 }, // pc
{ -1, 96 }, // FPA1
{ -1, 96 }, // FPA2
{ -1, 96 }, // FPA3
{ -1, 96 }, // FPA4
{ -1, 96 }, // FPA5
{ -1, 96 }, // FPA6
{ -1, 96 }, // FPA7
{ -1, 96 }, // FPA8
{ -1, 32 }, // FPS
{ -1, 32 }, // xPSR
};
const struct rtos_register_stacking rtos_eCos_Cortex_M3_stacking =
{
0x44, // stack_registers_size
-1, // stack_growth_direction
26, // num_output_registers
rtos_eCos_Cortex_M3_stack_offsets // register_offsets
};
/***************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the *
* Free Software Foundation, Inc., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
***************************************************************************/
#ifndef INCLUDED_RTOS_STANDARD_STACKINGS_H_
#define INCLUDED_RTOS_STANDARD_STACKINGS_H_
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "rtos.h"
extern const struct rtos_register_stacking rtos_eCos_Cortex_M3_stacking;
#endif //ifndef INCLUDED_RTOS_STANDARD_STACKINGS_H_
Supports Markdown
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment