X-Git-Url: https://review.openocd.org/gitweb?p=openocd.git;a=blobdiff_plain;f=src%2Frtos%2Frtos.c;h=aa0976b5c5b2dede68dda6e3c4aef0413320269b;hp=3deeb68e7237309897f956d3d02670ce43ec7ba5;hb=44e6d7720be9f5536d0ff4f1bcbff96ce8d4d336;hpb=0a4b27ec4bcb303547af68490f007d65a00bff02

diff --git a/src/rtos/rtos.c b/src/rtos/rtos.c
index 3deeb68e72..aa0976b5c5 100644
--- a/src/rtos/rtos.c
+++ b/src/rtos/rtos.c
@@ -22,16 +22,12 @@
 #include "config.h"
 #endif
 
-
 #include "rtos.h"
 #include "target/target.h"
 #include "helper/log.h"
 #include "server/gdb_server.h"
 
-
-
-static void hex_to_str( char* dst, char * hex_src );
-
+static void hex_to_str(char *dst, char *hex_src);
 
 /* RTOSs */
 extern struct rtos_type FreeRTOS_rtos;
@@ -39,8 +35,7 @@ extern struct rtos_type ThreadX_rtos;
 extern struct rtos_type eCos_rtos;
 extern struct rtos_type Linux_os;
 
-static struct rtos_type *rtos_types[] =
-{
+static struct rtos_type *rtos_types[] = {
 	&ThreadX_rtos,
 	&FreeRTOS_rtos,
 	&eCos_rtos,
@@ -57,90 +52,95 @@ int rtos_smp_init(struct target *target)
 	return ERROR_TARGET_INIT_FAILED;
 }
 
+static int os_alloc(struct target *target, struct rtos_type *ostype)
+{
+	struct rtos *os = target->rtos = calloc(1, sizeof(struct rtos));
+
+	if (!os)
+		return JIM_ERR;
+
+	os->type = ostype;
+	os->current_threadid = -1;
+	os->current_thread = 0;
+	os->symbols = NULL;
+	os->target = target;
+
+	/* RTOS drivers can override the packet handler in _create(). */
+	os->gdb_thread_packet = rtos_thread_packet;
+
+	return JIM_OK;
+}
+
+static void os_free(struct target *target)
+{
+	if (!target->rtos)
+		return;
+
+	if (target->rtos->symbols)
+		free(target->rtos->symbols);
+
+	free(target->rtos);
+	target->rtos = NULL;
+}
 
-int rtos_create(Jim_GetOptInfo *goi, struct target * target)
+static int os_alloc_create(struct target *target, struct rtos_type *ostype)
+{
+	int ret = os_alloc(target, ostype);
+
+	if (JIM_OK == ret) {
+		ret = target->rtos->type->create(target);
+		if (ret != JIM_OK)
+			os_free(target);
+	}
+
+	return ret;
+}
+
+int rtos_create(Jim_GetOptInfo *goi, struct target *target)
 {
 	int x;
 	char *cp;
-	if (! goi->isconfigure) {
-		if (goi->argc != 0) {
-			if (goi->argc != 0) {
-				Jim_WrongNumArgs(goi->interp,
-						goi->argc, goi->argv,
-						"NO PARAMS");
-				return JIM_ERR;
-			}
+	struct Jim_Obj *res;
 
-			Jim_SetResultString(goi->interp,
-					target_type_name(target), -1);
-		}
+	if (!goi->isconfigure && goi->argc != 0) {
+		Jim_WrongNumArgs(goi->interp, goi->argc, goi->argv, "NO PARAMS");
+		return JIM_ERR;
 	}
 
-	if (target->rtos) {
-		free((void *)(target->rtos));
-	}
-//			e = Jim_GetOpt_String(goi, &cp, NULL);
-//			target->rtos = strdup(cp);
+	os_free(target);
 
 	Jim_GetOpt_String(goi, &cp, NULL);
-	/* now does target type exist */
 
-	if ( 0 == strcmp( cp, "auto") )
-	{
-		// auto detection of RTOS
+	if (0 == strcmp(cp, "auto")) {
+		/* Auto detect tries to look up all symbols for each RTOS,
+		 * and runs the RTOS driver's _detect() function when GDB
+		 * finds all symbols for any RTOS. See rtos_qsymbol(). */
 		target->rtos_auto_detect = true;
-		x = 0;
-	}
-	else
-	{
 
-		for (x = 0 ; rtos_types[x] ; x++) {
-			if (0 == strcmp(cp, rtos_types[x]->name)) {
-				/* found */
-				break;
-			}
-		}
-		if (rtos_types[x] == NULL) {
-			Jim_SetResultFormatted(goi->interp, "Unknown rtos type %s, try one of ", cp);
-			for (x = 0 ; rtos_types[x] ; x++) {
-				if (rtos_types[x + 1]) {
-					Jim_AppendStrings(goi->interp,
-									   Jim_GetResult(goi->interp),
-									   rtos_types[x]->name,
-									   ", ", NULL);
-				} else {
-					Jim_AppendStrings(goi->interp,
-									   Jim_GetResult(goi->interp),
-									   " or ",
-									   rtos_types[x]->name,NULL);
-				}
-			}
-			return JIM_ERR;
-		}
-	}
-	/* Create it */
-	target->rtos = calloc(1,sizeof(struct rtos));
-	target->rtos->type = rtos_types[x];
-	target->rtos->current_threadid = -1;
-	target->rtos->current_thread = 0;
-	target->rtos->symbols = NULL;
-	target->rtos->target = target;
-	/* put default thread handler in linux usecase it is overloaded*/
-	target->rtos->gdb_thread_packet = rtos_thread_packet;
-
-	if ( 0 != strcmp( cp, "auto") )
-	{
-		target->rtos->type->create( target );
+		/* rtos_qsymbol() will iterate over all RTOSes. Allocate
+		 * target->rtos here, and set it to the first RTOS type. */
+		return os_alloc(target, rtos_types[0]);
 	}
 
-	return JIM_OK;
+	for (x = 0; rtos_types[x]; x++)
+		if (0 == strcmp(cp, rtos_types[x]->name))
+			return os_alloc_create(target, rtos_types[x]);
+
+	Jim_SetResultFormatted(goi->interp, "Unknown RTOS type %s, try one of: ", cp);
+	res = Jim_GetResult(goi->interp);
+	for (x = 0; rtos_types[x]; x++)
+		Jim_AppendStrings(goi->interp, res, rtos_types[x]->name, ", ", NULL);
+	Jim_AppendStrings(goi->interp, res, " or auto", NULL);
+
+	return JIM_ERR;
 }
 
 int gdb_thread_packet(struct connection *connection, char *packet, int packet_size)
 {
 	struct target *target = get_target_from_connection(connection);
 	if (target->rtos == NULL)
-		return rtos_thread_packet(connection, packet, packet_size); /* thread not found*/
+		return rtos_thread_packet(connection, packet, packet_size);	/* thread not
+										 *found*/
 	return target->rtos->gdb_thread_packet(connection, packet, packet_size);
 }
 /* return -1 if no rtos defined, 0 if rtos and symbol to be asked, 1 if all
@@ -171,13 +171,15 @@ int rtos_qsymbol(struct connection *connection, char *packet, int packet_size)
 
 			hex_to_str(name_str, hex_name_str);
 			symbol_num = 0;
-			while ((target->rtos->symbols[symbol_num].symbol_name != NULL)
-					&& (0 != strcmp(target->rtos->symbols[symbol_num].symbol_name, name_str)))
+			while ((target->rtos->symbols[symbol_num].symbol_name != NULL) &&
+					(0 != strcmp(target->rtos->symbols[symbol_num].symbol_name, name_str)))
 				symbol_num++;
 
 			if (target->rtos->symbols[symbol_num].symbol_name == NULL) {
 				LOG_OUTPUT("ERROR: unknown symbol\r\n");
 				gdb_put_packet(connection, "OK", 2);
+				free(hex_name_str);
+				free(name_str);
 				return ERROR_OK;
 			}
 
@@ -194,7 +196,8 @@ int rtos_qsymbol(struct connection *connection, char *packet, int packet_size)
 					(1 == target->rtos->type->detect_rtos(target))) {
 				/* Found correct RTOS or not autodetecting */
 				if (target->rtos_auto_detect == true)
-					LOG_OUTPUT("Auto-detected RTOS: %s\r\n", target->rtos->type->name);
+					LOG_OUTPUT("Auto-detected RTOS: %s\r\n",
+						target->rtos->type->name);
 				symbols_done = 1;
 			} else {
 				/* Auto detecting RTOS and currently not found */
@@ -203,7 +206,8 @@ int rtos_qsymbol(struct connection *connection, char *packet, int packet_size)
 					symbols_done = 1;
 				else {
 					next_symbol_num = 0;
-					target->rtos->type->get_symbol_list_to_lookup(&target->rtos->symbols);
+					target->rtos->type->get_symbol_list_to_lookup(
+						&target->rtos->symbols);
 				}
 			}
 		}
@@ -225,82 +229,63 @@ int rtos_qsymbol(struct connection *connection, char *packet, int packet_size)
 	return -1;
 }
 
-
 int rtos_thread_packet(struct connection *connection, char *packet, int packet_size)
 {
 	struct target *target = get_target_from_connection(connection);
 
-	if (strstr(packet, "qThreadExtraInfo,"))
-	{
-		if ((target->rtos != NULL) && (target->rtos->thread_details != NULL) && (target->rtos->thread_count != 0))
-		{
+	if (strstr(packet, "qThreadExtraInfo,")) {
+		if ((target->rtos != NULL) && (target->rtos->thread_details != NULL) &&
+				(target->rtos->thread_count != 0)) {
 			threadid_t threadid = 0;
 			int found = -1;
-			sscanf(packet, "qThreadExtraInfo,%" SCNx64, &threadid );
+			sscanf(packet, "qThreadExtraInfo,%" SCNx64, &threadid);
 
-			if ((target->rtos != NULL) && (target->rtos->thread_details
-					!= NULL)) {
+			if ((target->rtos != NULL) && (target->rtos->thread_details != NULL)) {
 				int thread_num;
-				for (thread_num = 0; thread_num
-						< target->rtos->thread_count; thread_num++) {
-					if (target->rtos->thread_details[thread_num].threadid
-							== threadid) {
-						if (target->rtos->thread_details[thread_num].exists) {
+				for (thread_num = 0; thread_num < target->rtos->thread_count; thread_num++) {
+					if (target->rtos->thread_details[thread_num].threadid == threadid) {
+						if (target->rtos->thread_details[thread_num].exists)
 							found = thread_num;
-						}
 					}
 				}
 			}
 			if (found == -1) {
-				gdb_put_packet(connection, "E01", 3); // thread not found
+				gdb_put_packet(connection, "E01", 3);	/* thread not found */
 				return ERROR_OK;
 			}
 
-			struct thread_detail* detail = &target->rtos->thread_details[found];
+			struct thread_detail *detail = &target->rtos->thread_details[found];
 
 			int str_size = 0;
-			if ( detail->display_str != NULL )
-			{
+			if (detail->display_str != NULL)
 				str_size += strlen(detail->display_str);
-			}
-			if ( detail->thread_name_str != NULL )
-			{
+			if (detail->thread_name_str != NULL)
 				str_size += strlen(detail->thread_name_str);
-			}
-			if ( detail->extra_info_str != NULL )
-			{
+			if (detail->extra_info_str != NULL)
 				str_size += strlen(detail->extra_info_str);
-			}
 
-			char * tmp_str = (char*) malloc( str_size + 7 );
-			char*  tmp_str_ptr = tmp_str;
+			char *tmp_str = (char *) malloc(str_size + 7);
+			char *tmp_str_ptr = tmp_str;
 
-			if ( detail->display_str != NULL )
-			{
-				tmp_str_ptr += sprintf( tmp_str_ptr, "%s", detail->display_str );
+			if (detail->display_str != NULL)
+				tmp_str_ptr += sprintf(tmp_str_ptr, "%s", detail->display_str);
+			if (detail->thread_name_str != NULL) {
+				if (tmp_str_ptr != tmp_str)
+					tmp_str_ptr += sprintf(tmp_str_ptr, " : ");
+				tmp_str_ptr += sprintf(tmp_str_ptr, "%s", detail->thread_name_str);
 			}
-			if ( detail->thread_name_str != NULL )
-			{
-				if ( tmp_str_ptr != tmp_str )
-				{
-					tmp_str_ptr += sprintf( tmp_str_ptr, " : " );
-				}
-				tmp_str_ptr += sprintf( tmp_str_ptr, "%s", detail->thread_name_str );
-			}
-			if ( detail->extra_info_str != NULL )
-			{
-				if ( tmp_str_ptr != tmp_str )
-				{
-					tmp_str_ptr += sprintf( tmp_str_ptr, " : " );
-				}
-				tmp_str_ptr += sprintf( tmp_str_ptr, " : %s", detail->extra_info_str );
+			if (detail->extra_info_str != NULL) {
+				if (tmp_str_ptr != tmp_str)
+					tmp_str_ptr += sprintf(tmp_str_ptr, " : ");
+				tmp_str_ptr +=
+					sprintf(tmp_str_ptr, " : %s", detail->extra_info_str);
 			}
 
 			assert(strlen(tmp_str) ==
 				(size_t) (tmp_str_ptr - tmp_str));
 
-			char * hex_str = (char*) malloc( strlen(tmp_str)*2 +1 );
-			str_to_hex( hex_str, tmp_str );
+			char *hex_str = (char *) malloc(strlen(tmp_str)*2 + 1);
+			str_to_hex(hex_str, tmp_str);
 
 			gdb_put_packet(connection, hex_str, strlen(hex_str));
 			free(hex_str);
@@ -310,11 +295,8 @@ int rtos_thread_packet(struct connection *connection, char *packet, int packet_s
 		}
 		gdb_put_packet(connection, "", 0);
 		return ERROR_OK;
-	}
-	else if (strstr(packet, "qSymbol"))
-	{
-		if (rtos_qsymbol(connection, packet, packet_size) == 1)
-		{
+	} else if (strstr(packet, "qSymbol")) {
+		if (rtos_qsymbol(connection, packet, packet_size) == 1) {
 			target->rtos_auto_detect = false;
 			target->rtos->type->create(target);
 			target->rtos->type->update_threads(target->rtos);
@@ -322,91 +304,64 @@ int rtos_thread_packet(struct connection *connection, char *packet, int packet_s
 			gdb_put_packet(connection, "OK", 2);
 		}
 		return ERROR_OK;
-	}
-	else if (strstr(packet, "qfThreadInfo"))
-	{
+	} else if (strstr(packet, "qfThreadInfo")) {
 		int i;
-		if ( ( target->rtos != NULL ) && ( target->rtos->thread_count != 0 ) )
-		{
+		if ((target->rtos != NULL) && (target->rtos->thread_count != 0)) {
 
-			char* out_str = (char*) malloc(17 * target->rtos->thread_count + 5);
-			char* tmp_str = out_str;
+			char *out_str = (char *) malloc(17 * target->rtos->thread_count + 5);
+			char *tmp_str = out_str;
 			tmp_str += sprintf(tmp_str, "m");
 			for (i = 0; i < target->rtos->thread_count; i++) {
-				if (i != 0) {
+				if (i != 0)
 					tmp_str += sprintf(tmp_str, ",");
-				}
 				tmp_str += sprintf(tmp_str, "%016" PRIx64,
 						target->rtos->thread_details[i].threadid);
 			}
 			tmp_str[0] = 0;
 			gdb_put_packet(connection, out_str, strlen(out_str));
-		}
-		else
-		{
+		} else
 			gdb_put_packet(connection, "", 0);
-		}
 
 		return ERROR_OK;
-	}
-	else if (strstr(packet, "qsThreadInfo"))
-	{
+	} else if (strstr(packet, "qsThreadInfo")) {
 		gdb_put_packet(connection, "l", 1);
 		return ERROR_OK;
-	}
-	else if (strstr(packet, "qAttached"))
-	{
+	} else if (strstr(packet, "qAttached")) {
 		gdb_put_packet(connection, "1", 1);
 		return ERROR_OK;
-	}
-	else if (strstr(packet, "qOffsets"))
-	{
+	} else if (strstr(packet, "qOffsets")) {
 		char offsets[] = "Text=0;Data=0;Bss=0";
 		gdb_put_packet(connection, offsets, sizeof(offsets)-1);
 		return ERROR_OK;
-	}
-	else if (strstr(packet, "qC"))
-	{
-		if( target->rtos!=NULL )
-		{
+	} else if (strstr(packet, "qC")) {
+		if (target->rtos != NULL) {
 			char buffer[15];
 			int size;
 			size = snprintf(buffer, 15, "QC%08X", (int)target->rtos->current_thread);
 			gdb_put_packet(connection, buffer, size);
-		}
-		else
-		{
+		} else
 			gdb_put_packet(connection, "QC0", 3);
-		}
 		return ERROR_OK;
-	}
-	else if ( packet[0] == 'T' ) // Is thread alive?
-	{
+	} else if (packet[0] == 'T') {	/* Is thread alive? */
 		threadid_t threadid;
 		int found = -1;
 		sscanf(packet, "T%" SCNx64, &threadid);
-		if ((target->rtos != NULL) && (target->rtos->thread_details
-				!= NULL)) {
+		if ((target->rtos != NULL) && (target->rtos->thread_details != NULL)) {
 			int thread_num;
-			for (thread_num = 0; thread_num
-					< target->rtos->thread_count; thread_num++) {
-				if (target->rtos->thread_details[thread_num].threadid
-						== threadid) {
-					if (target->rtos->thread_details[thread_num].exists) {
+			for (thread_num = 0; thread_num < target->rtos->thread_count; thread_num++) {
+				if (target->rtos->thread_details[thread_num].threadid == threadid) {
+					if (target->rtos->thread_details[thread_num].exists)
 						found = thread_num;
-					}
 				}
 			}
 		}
-		if (found != -1) {
-			gdb_put_packet(connection, "OK", 2); // thread alive
-		} else {
-			gdb_put_packet(connection, "E01", 3); // thread not found
-		}
+		if (found != -1)
+			gdb_put_packet(connection, "OK", 2);	/* thread alive */
+		else
+			gdb_put_packet(connection, "E01", 3);	/* thread not found */
 		return ERROR_OK;
-	}
-	else if ( packet[0] == 'H') // Set current thread ( 'c' for step and continue, 'g' for all other operations )
-	{
+	} else if (packet[0] == 'H') {	/* Set current thread ( 'c' for step and continue, 'g' for
+					 * all other operations ) */
 		if ((packet[1] == 'g') && (target->rtos != NULL))
 			sscanf(packet, "Hg%16" SCNx64, &target->rtos->current_threadid);
 		gdb_put_packet(connection, "OK", 2);
@@ -420,17 +375,16 @@ int rtos_get_gdb_reg_list(struct connection *connection)
 {
 	struct target *target = get_target_from_connection(connection);
 	int64_t current_threadid = target->rtos->current_threadid;
-	if ((target->rtos != NULL) &&
-		 (current_threadid != -1) &&
-		 (current_threadid != 0) &&
-		 ((current_threadid != target->rtos->current_thread) ||
-		 (target->smp))) /* in smp several current thread are possible */
-	{
-		char * hex_reg_list;
-		target->rtos->type->get_thread_reg_list( target->rtos, current_threadid, &hex_reg_list );
-
-		if ( hex_reg_list != NULL )
-		{
+	if ((target->rtos != NULL) && (current_threadid != -1) &&
+			(current_threadid != 0) &&
+			((current_threadid != target->rtos->current_thread) ||
+			(target->smp))) {	/* in smp several current thread are possible */
+		char *hex_reg_list;
+		target->rtos->type->get_thread_reg_list(target->rtos,
+			current_threadid,
+			&hex_reg_list);
+
+		if (hex_reg_list != NULL) {
 			gdb_put_packet(connection, hex_reg_list, strlen(hex_reg_list));
 			free(hex_reg_list);
 			return ERROR_OK;
@@ -439,130 +393,107 @@ int rtos_get_gdb_reg_list(struct connection *connection)
 	return ERROR_FAIL;
 }
 
-
-
-int rtos_generic_stack_read( struct target * target, const struct rtos_register_stacking* stacking, int64_t stack_ptr, char ** hex_reg_list )
+int rtos_generic_stack_read(struct target *target,
+	const struct rtos_register_stacking *stacking,
+	int64_t stack_ptr,
+	char **hex_reg_list)
 {
 	int list_size = 0;
-	char * tmp_str_ptr;
+	char *tmp_str_ptr;
 	int64_t new_stack_ptr;
 	int i;
 	int retval;
 
-	if ( stack_ptr == 0)
-	{
+	if (stack_ptr == 0) {
 		LOG_OUTPUT("Error: null stack pointer in thread\r\n");
 		return -5;
 	}
-	// Read the stack
-	uint8_t * stack_data = (uint8_t*) malloc( stacking->stack_registers_size );
+	/* Read the stack */
+	uint8_t *stack_data = (uint8_t *) malloc(stacking->stack_registers_size);
 	uint32_t address = stack_ptr;
 
-	if ( stacking->stack_growth_direction == 1 )
-	{
-		address -=  stacking->stack_registers_size;
-	}
-	retval = target_read_buffer( target, address, stacking->stack_registers_size, stack_data);
-	if ( retval != ERROR_OK )
-	{
+	if (stacking->stack_growth_direction == 1)
+		address -= stacking->stack_registers_size;
+	retval = target_read_buffer(target, address, stacking->stack_registers_size, stack_data);
+	if (retval != ERROR_OK) {
 		LOG_OUTPUT("Error reading stack frame from FreeRTOS thread\r\n");
 		return retval;
 	}
-/*
-	LOG_OUTPUT("Stack Data :");
-	for(i = 0; i < stacking->stack_registers_size; i++ )
-	{
-		LOG_OUTPUT("%02X",stack_data[i]);
-	}
-	LOG_OUTPUT("\r\n");
-*/
-	for( i = 0; i < stacking->num_output_registers; i++ )
-	{
+#if 0
+		LOG_OUTPUT("Stack Data :");
+		for (i = 0; i < stacking->stack_registers_size; i++)
+			LOG_OUTPUT("%02X", stack_data[i]);
+		LOG_OUTPUT("\r\n");
+#endif
+	for (i = 0; i < stacking->num_output_registers; i++)
 		list_size += stacking->register_offsets[i].width_bits/8;
-	}
-	*hex_reg_list = (char*)malloc( list_size*2 +1 );
+	*hex_reg_list = (char *)malloc(list_size*2 + 1);
 	tmp_str_ptr = *hex_reg_list;
-	new_stack_ptr = stack_ptr - stacking->stack_growth_direction * stacking->stack_registers_size;
+	new_stack_ptr = stack_ptr - stacking->stack_growth_direction *
+		stacking->stack_registers_size;
 	if (stacking->stack_alignment != 0) {
 		/* Align new stack pointer to x byte boundary */
 		new_stack_ptr =
 			(new_stack_ptr & (~((int64_t) stacking->stack_alignment - 1))) +
 			((stacking->stack_growth_direction == -1) ? stacking->stack_alignment : 0);
 	}
-	for( i = 0; i < stacking->num_output_registers; i++ )
-	{
+	for (i = 0; i < stacking->num_output_registers; i++) {
 		int j;
-		for ( j = 0; j < stacking->register_offsets[i].width_bits/8; j++ )
-		{
-			if ( stacking->register_offsets[i].offset == -1 )
-			{
-				tmp_str_ptr += sprintf( tmp_str_ptr, "%02x", 0 );
-			}
-			else if ( stacking->register_offsets[i].offset == -2 )
-			{
-				tmp_str_ptr += sprintf( tmp_str_ptr, "%02x", ((uint8_t*)&new_stack_ptr)[j] );
-			}
+		for (j = 0; j < stacking->register_offsets[i].width_bits/8; j++) {
+			if (stacking->register_offsets[i].offset == -1)
+				tmp_str_ptr += sprintf(tmp_str_ptr, "%02x", 0);
+			else if (stacking->register_offsets[i].offset == -2)
+				tmp_str_ptr += sprintf(tmp_str_ptr, "%02x",
+						((uint8_t *)&new_stack_ptr)[j]);
 			else
-			{
-				tmp_str_ptr += sprintf( tmp_str_ptr,"%02x", stack_data[ stacking->register_offsets[i].offset + j ] );
-			}
+				tmp_str_ptr += sprintf(tmp_str_ptr, "%02x",
+						stack_data[stacking->register_offsets[i].offset + j]);
 		}
 	}
-//	LOG_OUTPUT("Output register string: %s\r\n", *hex_reg_list);
+/*	LOG_OUTPUT("Output register string: %s\r\n", *hex_reg_list); */
 	return ERROR_OK;
 }
 
-int rtos_try_next( struct target * target )
+int rtos_try_next(struct target *target)
 {
-	int x;
+	struct rtos *os = target->rtos;
+	struct rtos_type **type = rtos_types;
 
-	if ( target->rtos == NULL )
-	{
-		return -1;
-	}
+	if (!os)
+		return 0;
 
-	for (x = 0 ; rtos_types[x] ; x++) {
-		if (target->rtos->type == rtos_types[x] ) {
-			/* found */
-			if ( rtos_types[x+1] != NULL )
-			{
-				target->rtos->type = rtos_types[x+1];
-				if ( target->rtos->symbols != NULL )
-				{
-					free( target->rtos->symbols );
-				}
-				return 1;
-			}
-			else
-			{
-				// No more rtos types
-				return 0;
-			}
+	while (*type && os->type != *type)
+		type++;
 
-		}
+	if (!*type || !*(++type))
+		return 0;
+
+	os->type = *type;
+	if (os->symbols) {
+		free(os->symbols);
+		os->symbols = NULL;
 	}
-	return 0;
 
+	return 1;
 }
 
-static void hex_to_str( char* dst, char * hex_src )
+static void hex_to_str(char *dst, char *hex_src)
 {
 	int src_pos = 0;
 	int dst_pos = 0;
 
-	while ( hex_src[src_pos] != '\x00' )
-	{
+	while (hex_src[src_pos] != '\x00') {
 		char hex_char = hex_src[src_pos];
-		char hex_digit_val = (hex_char>='a')?hex_char-'a'+10:(hex_char>='A')?hex_char-'A'+10:hex_char-'0';
-		if ( 0 == (src_pos & 0x01) )
-		{
+		char hex_digit_val =
+			(hex_char >=
+			 'a') ? hex_char-'a'+
+			10 : (hex_char >= 'A') ? hex_char-'A'+10 : hex_char-'0';
+		if (0 == (src_pos & 0x01)) {
 			dst[dst_pos] = hex_digit_val;
 			dst[dst_pos+1] = 0;
-		}
-		else
-		{
-			((unsigned char*)dst)[dst_pos] <<= 4;
-			((unsigned char*)dst)[dst_pos] += hex_digit_val;
+		} else {
+			((unsigned char *)dst)[dst_pos] <<= 4;
+			((unsigned char *)dst)[dst_pos] += hex_digit_val;
 			dst_pos++;
 		}
 		src_pos++;
@@ -572,21 +503,16 @@ static void hex_to_str( char* dst, char * hex_src )
 
 int str_to_hex(char *hex_dst, char *src)
 {
-	char * posptr = hex_dst;
+	char *posptr = hex_dst;
 	unsigned i;
-	for( i = 0; i < strlen(src); i++)
-	{
-		posptr += sprintf( posptr, "%02x", (unsigned char)src[i] );
-	}
-	return (posptr-hex_dst);
+	for (i = 0; i < strlen(src); i++)
+		posptr += sprintf(posptr, "%02x", (unsigned char)src[i]);
+	return posptr - hex_dst;
 }
 
-
-int rtos_update_threads( struct target* target )
+int rtos_update_threads(struct target *target)
 {
 	if ((target->rtos != NULL) && (target->rtos->type != NULL))
-	{
 		target->rtos->type->update_threads(target->rtos);
-	}
 	return ERROR_OK;
 }