X-Git-Url: https://review.openocd.org/gitweb?p=openocd.git;a=blobdiff_plain;f=src%2Ftarget%2Fetm.c;h=520e22f6089c9a20c5785992f4bd1a0e8abb3d8f;hp=e70df10751cf9b22c3c42c74c7c1ae9302e2c2c3;hb=2653b8030722c85393974cd6c0ebcdbd1ae27c72;hpb=8193f17c3aeb948ca8f70ed3361e8b2bccefffed

diff --git a/src/target/etm.c b/src/target/etm.c
index e70df10751..520e22f608 100644
--- a/src/target/etm.c
+++ b/src/target/etm.c
@@ -22,6 +22,7 @@
 #endif
 
 #include "armv4_5.h"
+#include "etm.h"
 #include "etb.h"
 #include "image.h"
 #include "arm_disassembler.h"
@@ -50,8 +51,6 @@
  *  ARM IHI 0014O ... Embedded Trace Macrocell, Architecture Specification
  */
 
-#define ARRAY_SIZE(x)	((int)(sizeof(x)/sizeof((x)[0])))
-
 enum {
 	RO,				/* read/only */
 	WO,				/* write/only */
@@ -215,8 +214,6 @@ static const struct etm_reg_info etm_outputs[] = {
 	{ 0x6f, 32, RO, 0x20, "ETM_contextid_comparator_mask", }
 #endif
 
-static int etm_reg_arch_type = -1;
-
 static int etm_get_reg(struct reg *reg);
 static int etm_read_reg_w_check(struct reg *reg,
 		uint8_t* check_value, uint8_t* check_mask);
@@ -224,8 +221,10 @@ static int etm_register_user_commands(struct command_context *cmd_ctx);
 static int etm_set_reg_w_exec(struct reg *reg, uint8_t *buf);
 static int etm_write_reg(struct reg *reg, uint32_t value);
 
-static struct command *etm_cmd;
-
+static const struct reg_arch_type etm_scan6_type = {
+	.get = etm_get_reg,
+	.set = etm_set_reg_w_exec,
+};
 
 /* Look up register by ID ... most ETM instances only
  * support a subset of the possible registers.
@@ -233,7 +232,7 @@ static struct command *etm_cmd;
 static struct reg *etm_reg_lookup(struct etm_context *etm_ctx, unsigned id)
 {
 	struct reg_cache *cache = etm_ctx->reg_cache;
-	int i;
+	unsigned i;
 
 	for (i = 0; i < cache->num_regs; i++) {
 		struct etm_reg *reg = cache->reg_list[i].arch_info;
@@ -270,7 +269,7 @@ static void etm_reg_add(unsigned bcd_vers, struct arm_jtag *jtag_info,
 		reg->size = r->size;
 		reg->value = &ereg->value;
 		reg->arch_info = ereg;
-		reg->arch_type = etm_reg_arch_type;
+		reg->type = &etm_scan6_type;
 		reg++;
 		cache->num_regs++;
 
@@ -288,11 +287,6 @@ struct reg_cache *etm_build_reg_cache(struct target *target,
 	struct etm_reg *arch_info = NULL;
 	unsigned bcd_vers, config;
 
-	/* register a register arch-type for etm registers only once */
-	if (etm_reg_arch_type == -1)
-		etm_reg_arch_type = register_reg_arch_type(etm_get_reg,
-				etm_set_reg_w_exec);
-
 	/* the actual registers are kept in two arrays */
 	reg_list = calloc(128, sizeof(struct reg));
 	arch_info = calloc(128, sizeof(struct etm_reg));
@@ -641,7 +635,7 @@ static int etm_read_instruction(struct etm_context *ctx, struct arm_instruction
 {
 	int i;
 	int section = -1;
-	uint32_t size_read;
+	size_t size_read;
 	uint32_t opcode;
 	int retval;
 
@@ -1183,22 +1177,22 @@ static COMMAND_HELPER(handle_etm_tracemode_command_update,
 	etmv1_tracemode_t tracemode;
 
 	/* what parts of data access are traced? */
-	if (strcmp(args[0], "none") == 0)
+	if (strcmp(CMD_ARGV[0], "none") == 0)
 		tracemode = ETMV1_TRACE_NONE;
-	else if (strcmp(args[0], "data") == 0)
+	else if (strcmp(CMD_ARGV[0], "data") == 0)
 		tracemode = ETMV1_TRACE_DATA;
-	else if (strcmp(args[0], "address") == 0)
+	else if (strcmp(CMD_ARGV[0], "address") == 0)
 		tracemode = ETMV1_TRACE_ADDR;
-	else if (strcmp(args[0], "all") == 0)
+	else if (strcmp(CMD_ARGV[0], "all") == 0)
 		tracemode = ETMV1_TRACE_DATA | ETMV1_TRACE_ADDR;
 	else
 	{
-		command_print(cmd_ctx, "invalid option '%s'", args[0]);
+		command_print(CMD_CTX, "invalid option '%s'", CMD_ARGV[0]);
 		return ERROR_INVALID_ARGUMENTS;
 	}
 
 	uint8_t context_id;
-	COMMAND_PARSE_NUMBER(u8, args[1], context_id);
+	COMMAND_PARSE_NUMBER(u8, CMD_ARGV[1], context_id);
 	switch (context_id)
 	{
 	case 0:
@@ -1214,29 +1208,18 @@ static COMMAND_HELPER(handle_etm_tracemode_command_update,
 		tracemode |= ETMV1_CONTEXTID_32;
 		break;
 	default:
-		command_print(cmd_ctx, "invalid option '%s'", args[1]);
+		command_print(CMD_CTX, "invalid option '%s'", CMD_ARGV[1]);
 		return ERROR_INVALID_ARGUMENTS;
 	}
 
-	if (strcmp(args[2], "enable") == 0)
+	bool etmv1_cycle_accurate;
+	COMMAND_PARSE_ENABLE(CMD_ARGV[2], etmv1_cycle_accurate);
+	if (etmv1_cycle_accurate)
 		tracemode |= ETMV1_CYCLE_ACCURATE;
-	else if (strcmp(args[2], "disable") == 0)
-		tracemode |= 0;
-	else
-	{
-		command_print(cmd_ctx, "invalid option '%s'", args[2]);
-		return ERROR_INVALID_ARGUMENTS;
-	}
 
-	if (strcmp(args[3], "enable") == 0)
+	bool etmv1_branch_output;
+	COMMAND_PARSE_ENABLE(CMD_ARGV[3], etmv1_branch_output);
 		tracemode |= ETMV1_BRANCH_OUTPUT;
-	else if (strcmp(args[3], "disable") == 0)
-		tracemode |= 0;
-	else
-	{
-		command_print(cmd_ctx, "invalid option '%s'", args[3]);
-		return ERROR_INVALID_ARGUMENTS;
-	}
 
 	/* IGNORED:
 	 *  - CPRT tracing (coprocessor register transfers)
@@ -1250,24 +1233,24 @@ static COMMAND_HELPER(handle_etm_tracemode_command_update,
 
 COMMAND_HANDLER(handle_etm_tracemode_command)
 {
-	struct target *target = get_current_target(cmd_ctx);
+	struct target *target = get_current_target(CMD_CTX);
 	struct arm *arm = target_to_arm(target);
 	struct etm_context *etm;
 
 	if (!is_arm(arm)) {
-		command_print(cmd_ctx, "ETM: current target isn't an ARM");
+		command_print(CMD_CTX, "ETM: current target isn't an ARM");
 		return ERROR_FAIL;
 	}
 
 	etm = arm->etm;
 	if (!etm) {
-		command_print(cmd_ctx, "current target doesn't have an ETM configured");
+		command_print(CMD_CTX, "current target doesn't have an ETM configured");
 		return ERROR_FAIL;
 	}
 
 	etmv1_tracemode_t tracemode = etm->tracemode;
 
-	switch (argc)
+	switch (CMD_ARGC)
 	{
 	case 0:
 		break;
@@ -1275,7 +1258,7 @@ COMMAND_HANDLER(handle_etm_tracemode_command)
 		CALL_COMMAND_HANDLER(handle_etm_tracemode_command_update, &tracemode);
 		break;
 	default:
-		command_print(cmd_ctx, "usage: configure trace mode "
+		command_print(CMD_CTX, "usage: configure trace mode "
 				"<none | data | address | all> "
 				"<context id bits> <cycle accurate> <branch output>");
 		return ERROR_FAIL;
@@ -1286,56 +1269,56 @@ COMMAND_HANDLER(handle_etm_tracemode_command)
 	 * or couldn't be written; display actual hardware state...
 	 */
 
-	command_print(cmd_ctx, "current tracemode configuration:");
+	command_print(CMD_CTX, "current tracemode configuration:");
 
 	switch (tracemode & ETMV1_TRACE_MASK)
 	{
 		case ETMV1_TRACE_NONE:
-			command_print(cmd_ctx, "data tracing: none");
+			command_print(CMD_CTX, "data tracing: none");
 			break;
 		case ETMV1_TRACE_DATA:
-			command_print(cmd_ctx, "data tracing: data only");
+			command_print(CMD_CTX, "data tracing: data only");
 			break;
 		case ETMV1_TRACE_ADDR:
-			command_print(cmd_ctx, "data tracing: address only");
+			command_print(CMD_CTX, "data tracing: address only");
 			break;
 		case ETMV1_TRACE_DATA | ETMV1_TRACE_ADDR:
-			command_print(cmd_ctx, "data tracing: address and data");
+			command_print(CMD_CTX, "data tracing: address and data");
 			break;
 	}
 
 	switch (tracemode & ETMV1_CONTEXTID_MASK)
 	{
 		case ETMV1_CONTEXTID_NONE:
-			command_print(cmd_ctx, "contextid tracing: none");
+			command_print(CMD_CTX, "contextid tracing: none");
 			break;
 		case ETMV1_CONTEXTID_8:
-			command_print(cmd_ctx, "contextid tracing: 8 bit");
+			command_print(CMD_CTX, "contextid tracing: 8 bit");
 			break;
 		case ETMV1_CONTEXTID_16:
-			command_print(cmd_ctx, "contextid tracing: 16 bit");
+			command_print(CMD_CTX, "contextid tracing: 16 bit");
 			break;
 		case ETMV1_CONTEXTID_32:
-			command_print(cmd_ctx, "contextid tracing: 32 bit");
+			command_print(CMD_CTX, "contextid tracing: 32 bit");
 			break;
 	}
 
 	if (tracemode & ETMV1_CYCLE_ACCURATE)
 	{
-		command_print(cmd_ctx, "cycle-accurate tracing enabled");
+		command_print(CMD_CTX, "cycle-accurate tracing enabled");
 	}
 	else
 	{
-		command_print(cmd_ctx, "cycle-accurate tracing disabled");
+		command_print(CMD_CTX, "cycle-accurate tracing disabled");
 	}
 
 	if (tracemode & ETMV1_BRANCH_OUTPUT)
 	{
-		command_print(cmd_ctx, "full branch address output enabled");
+		command_print(CMD_CTX, "full branch address output enabled");
 	}
 	else
 	{
-		command_print(cmd_ctx, "full branch address output disabled");
+		command_print(CMD_CTX, "full branch address output disabled");
 	}
 
 	/* only update ETM_CTRL register if tracemode changed */
@@ -1378,20 +1361,21 @@ COMMAND_HANDLER(handle_etm_config_command)
 	struct etm_context *etm_ctx;
 	int i;
 
-	if (argc != 5)
+	if (CMD_ARGC != 5)
 		return ERROR_COMMAND_SYNTAX_ERROR;
 
-	target = get_target(args[0]);
+	target = get_target(CMD_ARGV[0]);
 	if (!target)
 	{
-		LOG_ERROR("target '%s' not defined", args[0]);
+		LOG_ERROR("target '%s' not defined", CMD_ARGV[0]);
 		return ERROR_FAIL;
 	}
 
 	arm = target_to_arm(target);
 	if (!is_arm(arm)) {
-		command_print(cmd_ctx, "target '%s' is '%s'; not an ARM",
-				target->cmd_name, target_get_name(target));
+		command_print(CMD_CTX, "target '%s' is '%s'; not an ARM",
+				target_name(target),
+				target_type_name(target));
 		return ERROR_FAIL;
 	}
 
@@ -1408,7 +1392,7 @@ COMMAND_HANDLER(handle_etm_config_command)
 	 *    "normal full" ...
 	 */
 	uint8_t port_width;
-	COMMAND_PARSE_NUMBER(u8, args[1], port_width);
+	COMMAND_PARSE_NUMBER(u8, CMD_ARGV[1], port_width);
 	switch (port_width)
 	{
 		/* before ETMv3.0 */
@@ -1441,40 +1425,40 @@ COMMAND_HANDLER(handle_etm_config_command)
 			portmode |= ETM_PORT_2BIT;
 			break;
 		default:
-			command_print(cmd_ctx,
-				"unsupported ETM port width '%s'", args[1]);
+			command_print(CMD_CTX,
+				"unsupported ETM port width '%s'", CMD_ARGV[1]);
 			return ERROR_FAIL;
 	}
 
-	if (strcmp("normal", args[2]) == 0)
+	if (strcmp("normal", CMD_ARGV[2]) == 0)
 	{
 		portmode |= ETM_PORT_NORMAL;
 	}
-	else if (strcmp("multiplexed", args[2]) == 0)
+	else if (strcmp("multiplexed", CMD_ARGV[2]) == 0)
 	{
 		portmode |= ETM_PORT_MUXED;
 	}
-	else if (strcmp("demultiplexed", args[2]) == 0)
+	else if (strcmp("demultiplexed", CMD_ARGV[2]) == 0)
 	{
 		portmode |= ETM_PORT_DEMUXED;
 	}
 	else
 	{
-		command_print(cmd_ctx, "unsupported ETM port mode '%s', must be 'normal', 'multiplexed' or 'demultiplexed'", args[2]);
+		command_print(CMD_CTX, "unsupported ETM port mode '%s', must be 'normal', 'multiplexed' or 'demultiplexed'", CMD_ARGV[2]);
 		return ERROR_FAIL;
 	}
 
-	if (strcmp("half", args[3]) == 0)
+	if (strcmp("half", CMD_ARGV[3]) == 0)
 	{
 		portmode |= ETM_PORT_HALF_CLOCK;
 	}
-	else if (strcmp("full", args[3]) == 0)
+	else if (strcmp("full", CMD_ARGV[3]) == 0)
 	{
 		portmode |= ETM_PORT_FULL_CLOCK;
 	}
 	else
 	{
-		command_print(cmd_ctx, "unsupported ETM port clocking '%s', must be 'full' or 'half'", args[3]);
+		command_print(CMD_CTX, "unsupported ETM port clocking '%s', must be 'full' or 'half'", CMD_ARGV[3]);
 		return ERROR_FAIL;
 	}
 
@@ -1486,10 +1470,11 @@ COMMAND_HANDLER(handle_etm_config_command)
 
 	for (i = 0; etm_capture_drivers[i]; i++)
 	{
-		if (strcmp(args[4], etm_capture_drivers[i]->name) == 0)
+		if (strcmp(CMD_ARGV[4], etm_capture_drivers[i]->name) == 0)
 		{
-			int retval;
-			if ((retval = etm_capture_drivers[i]->register_commands(cmd_ctx)) != ERROR_OK)
+			int retval = register_commands(CMD_CTX, NULL,
+					etm_capture_drivers[i]->commands);
+			if (ERROR_OK != retval)
 			{
 				free(etm_ctx);
 				return retval;
@@ -1505,7 +1490,7 @@ COMMAND_HANDLER(handle_etm_config_command)
 	{
 		/* no supported capture driver found, don't register an ETM */
 		free(etm_ctx);
-		LOG_ERROR("trace capture driver '%s' not found", args[4]);
+		LOG_ERROR("trace capture driver '%s' not found", CMD_ARGV[4]);
 		return ERROR_FAIL;
 	}
 
@@ -1517,7 +1502,7 @@ COMMAND_HANDLER(handle_etm_config_command)
 
 	arm->etm = etm_ctx;
 
-	return etm_register_user_commands(cmd_ctx);
+	return etm_register_user_commands(CMD_CTX);
 }
 
 COMMAND_HANDLER(handle_etm_info_command)
@@ -1529,49 +1514,49 @@ COMMAND_HANDLER(handle_etm_info_command)
 	int max_port_size;
 	uint32_t config;
 
-	target = get_current_target(cmd_ctx);
+	target = get_current_target(CMD_CTX);
 	arm = target_to_arm(target);
 	if (!is_arm(arm))
 	{
-		command_print(cmd_ctx, "ETM: current target isn't an ARM");
+		command_print(CMD_CTX, "ETM: current target isn't an ARM");
 		return ERROR_FAIL;
 	}
 
 	etm = arm->etm;
 	if (!etm)
 	{
-		command_print(cmd_ctx, "current target doesn't have an ETM configured");
+		command_print(CMD_CTX, "current target doesn't have an ETM configured");
 		return ERROR_FAIL;
 	}
 
-	command_print(cmd_ctx, "ETM v%d.%d",
+	command_print(CMD_CTX, "ETM v%d.%d",
 			etm->bcd_vers >> 4, etm->bcd_vers & 0xf);
-	command_print(cmd_ctx, "pairs of address comparators: %i",
+	command_print(CMD_CTX, "pairs of address comparators: %i",
 			(int) (etm->config >> 0) & 0x0f);
-	command_print(cmd_ctx, "data comparators: %i",
+	command_print(CMD_CTX, "data comparators: %i",
 			(int) (etm->config >> 4) & 0x0f);
-	command_print(cmd_ctx, "memory map decoders: %i",
+	command_print(CMD_CTX, "memory map decoders: %i",
 			(int) (etm->config >> 8) & 0x1f);
-	command_print(cmd_ctx, "number of counters: %i",
+	command_print(CMD_CTX, "number of counters: %i",
 			(int) (etm->config >> 13) & 0x07);
-	command_print(cmd_ctx, "sequencer %spresent",
+	command_print(CMD_CTX, "sequencer %spresent",
 			(int) (etm->config & (1 << 16)) ? "" : "not ");
-	command_print(cmd_ctx, "number of ext. inputs: %i",
+	command_print(CMD_CTX, "number of ext. inputs: %i",
 			(int) (etm->config >> 17) & 0x07);
-	command_print(cmd_ctx, "number of ext. outputs: %i",
+	command_print(CMD_CTX, "number of ext. outputs: %i",
 			(int) (etm->config >> 20) & 0x07);
-	command_print(cmd_ctx, "FIFO full %spresent",
+	command_print(CMD_CTX, "FIFO full %spresent",
 			(int) (etm->config & (1 << 23)) ? "" : "not ");
 	if (etm->bcd_vers < 0x20)
-		command_print(cmd_ctx, "protocol version: %i",
+		command_print(CMD_CTX, "protocol version: %i",
 				(int) (etm->config >> 28) & 0x07);
 	else {
-		command_print(cmd_ctx,
+		command_print(CMD_CTX,
 				"coprocessor and memory access %ssupported",
 				(etm->config & (1 << 26)) ? "" : "not ");
-		command_print(cmd_ctx, "trace start/stop %spresent",
+		command_print(CMD_CTX, "trace start/stop %spresent",
 				(etm->config & (1 << 26)) ? "" : "not ");
-		command_print(cmd_ctx, "number of context comparators: %i",
+		command_print(CMD_CTX, "number of context comparators: %i",
 				(int) (etm->config >> 24) & 0x03);
 	}
 
@@ -1623,30 +1608,30 @@ COMMAND_HANDLER(handle_etm_info_command)
 			LOG_ERROR("Illegal max_port_size");
 			return ERROR_FAIL;
 	}
-	command_print(cmd_ctx, "max. port size: %i", max_port_size);
+	command_print(CMD_CTX, "max. port size: %i", max_port_size);
 
 	if (etm->bcd_vers < 0x30) {
-		command_print(cmd_ctx, "half-rate clocking %ssupported",
+		command_print(CMD_CTX, "half-rate clocking %ssupported",
 				(config & (1 << 3)) ? "" : "not ");
-		command_print(cmd_ctx, "full-rate clocking %ssupported",
+		command_print(CMD_CTX, "full-rate clocking %ssupported",
 				(config & (1 << 4)) ? "" : "not ");
-		command_print(cmd_ctx, "normal trace format %ssupported",
+		command_print(CMD_CTX, "normal trace format %ssupported",
 				(config & (1 << 5)) ? "" : "not ");
-		command_print(cmd_ctx, "multiplex trace format %ssupported",
+		command_print(CMD_CTX, "multiplex trace format %ssupported",
 				(config & (1 << 6)) ? "" : "not ");
-		command_print(cmd_ctx, "demultiplex trace format %ssupported",
+		command_print(CMD_CTX, "demultiplex trace format %ssupported",
 				(config & (1 << 7)) ? "" : "not ");
 	} else {
 		/* REVISIT show which size and format are selected ... */
-		command_print(cmd_ctx, "current port size %ssupported",
+		command_print(CMD_CTX, "current port size %ssupported",
 				(config & (1 << 10)) ? "" : "not ");
-		command_print(cmd_ctx, "current trace format %ssupported",
+		command_print(CMD_CTX, "current trace format %ssupported",
 				(config & (1 << 11)) ? "" : "not ");
 	}
 	if (etm->bcd_vers >= 0x21)
-		command_print(cmd_ctx, "fetch comparisons %ssupported",
+		command_print(CMD_CTX, "fetch comparisons %ssupported",
 				(config & (1 << 17)) ? "not " : "");
-	command_print(cmd_ctx, "FIFO full %ssupported",
+	command_print(CMD_CTX, "FIFO full %ssupported",
 			(config & (1 << 8)) ? "" : "not ");
 
 	return ERROR_OK;
@@ -1659,18 +1644,18 @@ COMMAND_HANDLER(handle_etm_status_command)
 	struct etm_context *etm;
 	trace_status_t trace_status;
 
-	target = get_current_target(cmd_ctx);
+	target = get_current_target(CMD_CTX);
 	arm = target_to_arm(target);
 	if (!is_arm(arm))
 	{
-		command_print(cmd_ctx, "ETM: current target isn't an ARM");
+		command_print(CMD_CTX, "ETM: current target isn't an ARM");
 		return ERROR_FAIL;
 	}
 
 	etm = arm->etm;
 	if (!etm)
 	{
-		command_print(cmd_ctx, "current target doesn't have an ETM configured");
+		command_print(CMD_CTX, "current target doesn't have an ETM configured");
 		return ERROR_FAIL;
 	}
 
@@ -1684,7 +1669,7 @@ COMMAND_HANDLER(handle_etm_status_command)
 		if (etm_get_reg(reg) == ERROR_OK) {
 			unsigned s = buf_get_u32(reg->value, 0, reg->size);
 
-			command_print(cmd_ctx, "etm: %s%s%s%s",
+			command_print(CMD_CTX, "etm: %s%s%s%s",
 				/* bit(1) == progbit */
 				(etm->bcd_vers >= 0x12)
 					? ((s & (1 << 1))
@@ -1703,7 +1688,7 @@ COMMAND_HANDLER(handle_etm_status_command)
 	trace_status = etm->capture_driver->status(etm);
 	if (trace_status == TRACE_IDLE)
 	{
-		command_print(cmd_ctx, "%s: idle", etm->capture_driver->name);
+		command_print(CMD_CTX, "%s: idle", etm->capture_driver->name);
 	}
 	else
 	{
@@ -1712,7 +1697,7 @@ COMMAND_HANDLER(handle_etm_status_command)
 		static char *overflowed = ", overflowed";
 		static char *triggered = ", triggered";
 
-		command_print(cmd_ctx, "%s: trace collection%s%s%s",
+		command_print(CMD_CTX, "%s: trace collection%s%s%s",
 			etm->capture_driver->name,
 			(trace_status & TRACE_RUNNING) ? running : completed,
 			(trace_status & TRACE_OVERFLOWED) ? overflowed : "",
@@ -1720,7 +1705,7 @@ COMMAND_HANDLER(handle_etm_status_command)
 
 		if (etm->trace_depth > 0)
 		{
-			command_print(cmd_ctx, "%i frames of trace data read",
+			command_print(CMD_CTX, "%i frames of trace data read",
 					(int)(etm->trace_depth));
 		}
 	}
@@ -1734,24 +1719,24 @@ COMMAND_HANDLER(handle_etm_image_command)
 	struct arm *arm;
 	struct etm_context *etm_ctx;
 
-	if (argc < 1)
+	if (CMD_ARGC < 1)
 	{
-		command_print(cmd_ctx, "usage: etm image <file> [base address] [type]");
+		command_print(CMD_CTX, "usage: etm image <file> [base address] [type]");
 		return ERROR_FAIL;
 	}
 
-	target = get_current_target(cmd_ctx);
+	target = get_current_target(CMD_CTX);
 	arm = target_to_arm(target);
 	if (!is_arm(arm))
 	{
-		command_print(cmd_ctx, "ETM: current target isn't an ARM");
+		command_print(CMD_CTX, "ETM: current target isn't an ARM");
 		return ERROR_FAIL;
 	}
 
 	etm_ctx = arm->etm;
 	if (!etm_ctx)
 	{
-		command_print(cmd_ctx, "current target doesn't have an ETM configured");
+		command_print(CMD_CTX, "current target doesn't have an ETM configured");
 		return ERROR_FAIL;
 	}
 
@@ -1759,7 +1744,7 @@ COMMAND_HANDLER(handle_etm_image_command)
 	{
 		image_close(etm_ctx->image);
 		free(etm_ctx->image);
-		command_print(cmd_ctx, "previously loaded image found and closed");
+		command_print(CMD_CTX, "previously loaded image found and closed");
 	}
 
 	etm_ctx->image = malloc(sizeof(struct image));
@@ -1767,17 +1752,17 @@ COMMAND_HANDLER(handle_etm_image_command)
 	etm_ctx->image->start_address_set = 0;
 
 	/* a base address isn't always necessary, default to 0x0 (i.e. don't relocate) */
-	if (argc >= 2)
+	if (CMD_ARGC >= 2)
 	{
 		etm_ctx->image->base_address_set = 1;
-		COMMAND_PARSE_NUMBER(int, args[1], etm_ctx->image->base_address);
+		COMMAND_PARSE_NUMBER(int, CMD_ARGV[1], etm_ctx->image->base_address);
 	}
 	else
 	{
 		etm_ctx->image->base_address_set = 0;
 	}
 
-	if (image_open(etm_ctx->image, args[0], (argc >= 3) ? args[2] : NULL) != ERROR_OK)
+	if (image_open(etm_ctx->image, CMD_ARGV[0], (CMD_ARGC >= 3) ? CMD_ARGV[2] : NULL) != ERROR_OK)
 	{
 		free(etm_ctx->image);
 		etm_ctx->image = NULL;
@@ -1795,37 +1780,37 @@ COMMAND_HANDLER(handle_etm_dump_command)
 	struct etm_context *etm_ctx;
 	uint32_t i;
 
-	if (argc != 1)
+	if (CMD_ARGC != 1)
 	{
-		command_print(cmd_ctx, "usage: etm dump <file>");
+		command_print(CMD_CTX, "usage: etm dump <file>");
 		return ERROR_FAIL;
 	}
 
-	target = get_current_target(cmd_ctx);
+	target = get_current_target(CMD_CTX);
 	arm = target_to_arm(target);
 	if (!is_arm(arm))
 	{
-		command_print(cmd_ctx, "ETM: current target isn't an ARM");
+		command_print(CMD_CTX, "ETM: current target isn't an ARM");
 		return ERROR_FAIL;
 	}
 
 	etm_ctx = arm->etm;
 	if (!etm_ctx)
 	{
-		command_print(cmd_ctx, "current target doesn't have an ETM configured");
+		command_print(CMD_CTX, "current target doesn't have an ETM configured");
 		return ERROR_FAIL;
 	}
 
 	if (etm_ctx->capture_driver->status == TRACE_IDLE)
 	{
-		command_print(cmd_ctx, "trace capture wasn't enabled, no trace data captured");
+		command_print(CMD_CTX, "trace capture wasn't enabled, no trace data captured");
 		return ERROR_OK;
 	}
 
 	if (etm_ctx->capture_driver->status(etm_ctx) & TRACE_RUNNING)
 	{
 		/* TODO: if on-the-fly capture is to be supported, this needs to be changed */
-		command_print(cmd_ctx, "trace capture not completed");
+		command_print(CMD_CTX, "trace capture not completed");
 		return ERROR_FAIL;
 	}
 
@@ -1833,7 +1818,7 @@ COMMAND_HANDLER(handle_etm_dump_command)
 	if (etm_ctx->trace_depth == 0)
 		etm_ctx->capture_driver->read_trace(etm_ctx);
 
-	if (fileio_open(&file, args[0], FILEIO_WRITE, FILEIO_BINARY) != ERROR_OK)
+	if (fileio_open(&file, CMD_ARGV[0], FILEIO_WRITE, FILEIO_BINARY) != ERROR_OK)
 	{
 		return ERROR_FAIL;
 	}
@@ -1863,41 +1848,41 @@ COMMAND_HANDLER(handle_etm_load_command)
 	struct etm_context *etm_ctx;
 	uint32_t i;
 
-	if (argc != 1)
+	if (CMD_ARGC != 1)
 	{
-		command_print(cmd_ctx, "usage: etm load <file>");
+		command_print(CMD_CTX, "usage: etm load <file>");
 		return ERROR_FAIL;
 	}
 
-	target = get_current_target(cmd_ctx);
+	target = get_current_target(CMD_CTX);
 	arm = target_to_arm(target);
 	if (!is_arm(arm))
 	{
-		command_print(cmd_ctx, "ETM: current target isn't an ARM");
+		command_print(CMD_CTX, "ETM: current target isn't an ARM");
 		return ERROR_FAIL;
 	}
 
 	etm_ctx = arm->etm;
 	if (!etm_ctx)
 	{
-		command_print(cmd_ctx, "current target doesn't have an ETM configured");
+		command_print(CMD_CTX, "current target doesn't have an ETM configured");
 		return ERROR_FAIL;
 	}
 
 	if (etm_ctx->capture_driver->status(etm_ctx) & TRACE_RUNNING)
 	{
-		command_print(cmd_ctx, "trace capture running, stop first");
+		command_print(CMD_CTX, "trace capture running, stop first");
 		return ERROR_FAIL;
 	}
 
-	if (fileio_open(&file, args[0], FILEIO_READ, FILEIO_BINARY) != ERROR_OK)
+	if (fileio_open(&file, CMD_ARGV[0], FILEIO_READ, FILEIO_BINARY) != ERROR_OK)
 	{
 		return ERROR_FAIL;
 	}
 
 	if (file.size % 4)
 	{
-		command_print(cmd_ctx, "size isn't a multiple of 4, no valid trace data");
+		command_print(CMD_CTX, "size isn't a multiple of 4, no valid trace data");
 		fileio_close(&file);
 		return ERROR_FAIL;
 	}
@@ -1918,7 +1903,7 @@ COMMAND_HANDLER(handle_etm_load_command)
 	etm_ctx->trace_data = malloc(sizeof(struct etmv1_trace_data) * etm_ctx->trace_depth);
 	if (etm_ctx->trace_data == NULL)
 	{
-		command_print(cmd_ctx, "not enough memory to perform operation");
+		command_print(CMD_CTX, "not enough memory to perform operation");
 		fileio_close(&file);
 		return ERROR_FAIL;
 	}
@@ -1945,29 +1930,29 @@ COMMAND_HANDLER(handle_etm_trigger_percent_command)
 	struct arm *arm;
 	struct etm_context *etm_ctx;
 
-	target = get_current_target(cmd_ctx);
+	target = get_current_target(CMD_CTX);
 	arm = target_to_arm(target);
 	if (!is_arm(arm))
 	{
-		command_print(cmd_ctx, "ETM: current target isn't an ARM");
+		command_print(CMD_CTX, "ETM: current target isn't an ARM");
 		return ERROR_FAIL;
 	}
 
 	etm_ctx = arm->etm;
 	if (!etm_ctx)
 	{
-		command_print(cmd_ctx, "current target doesn't have an ETM configured");
+		command_print(CMD_CTX, "current target doesn't have an ETM configured");
 		return ERROR_FAIL;
 	}
 
-	if (argc > 0)
+	if (CMD_ARGC > 0)
 	{
 		uint32_t new_value;
-		COMMAND_PARSE_NUMBER(u32, args[0], new_value);
+		COMMAND_PARSE_NUMBER(u32, CMD_ARGV[0], new_value);
 
 		if ((new_value < 2) || (new_value > 100))
 		{
-			command_print(cmd_ctx, "valid settings are 2%% to 100%%");
+			command_print(CMD_CTX, "valid settings are 2%% to 100%%");
 		}
 		else
 		{
@@ -1975,7 +1960,7 @@ COMMAND_HANDLER(handle_etm_trigger_percent_command)
 		}
 	}
 
-	command_print(cmd_ctx, "%i percent of the tracebuffer reserved for after the trigger", ((int)(etm_ctx->trigger_percent)));
+	command_print(CMD_CTX, "%i percent of the tracebuffer reserved for after the trigger", ((int)(etm_ctx->trigger_percent)));
 
 	return ERROR_OK;
 }
@@ -1987,18 +1972,18 @@ COMMAND_HANDLER(handle_etm_start_command)
 	struct etm_context *etm_ctx;
 	struct reg *etm_ctrl_reg;
 
-	target = get_current_target(cmd_ctx);
+	target = get_current_target(CMD_CTX);
 	arm = target_to_arm(target);
 	if (!is_arm(arm))
 	{
-		command_print(cmd_ctx, "ETM: current target isn't an ARM");
+		command_print(CMD_CTX, "ETM: current target isn't an ARM");
 		return ERROR_FAIL;
 	}
 
 	etm_ctx = arm->etm;
 	if (!etm_ctx)
 	{
-		command_print(cmd_ctx, "current target doesn't have an ETM configured");
+		command_print(CMD_CTX, "current target doesn't have an ETM configured");
 		return ERROR_FAIL;
 	}
 
@@ -2035,18 +2020,18 @@ COMMAND_HANDLER(handle_etm_stop_command)
 	struct etm_context *etm_ctx;
 	struct reg *etm_ctrl_reg;
 
-	target = get_current_target(cmd_ctx);
+	target = get_current_target(CMD_CTX);
 	arm = target_to_arm(target);
 	if (!is_arm(arm))
 	{
-		command_print(cmd_ctx, "ETM: current target isn't an ARM");
+		command_print(CMD_CTX, "ETM: current target isn't an ARM");
 		return ERROR_FAIL;
 	}
 
 	etm_ctx = arm->etm;
 	if (!etm_ctx)
 	{
-		command_print(cmd_ctx, "current target doesn't have an ETM configured");
+		command_print(CMD_CTX, "current target doesn't have an ETM configured");
 		return ERROR_FAIL;
 	}
 
@@ -2074,81 +2059,130 @@ COMMAND_HANDLER(handle_etm_analyze_command)
 	struct etm_context *etm_ctx;
 	int retval;
 
-	target = get_current_target(cmd_ctx);
+	target = get_current_target(CMD_CTX);
 	arm = target_to_arm(target);
 	if (!is_arm(arm))
 	{
-		command_print(cmd_ctx, "ETM: current target isn't an ARM");
+		command_print(CMD_CTX, "ETM: current target isn't an ARM");
 		return ERROR_FAIL;
 	}
 
 	etm_ctx = arm->etm;
 	if (!etm_ctx)
 	{
-		command_print(cmd_ctx, "current target doesn't have an ETM configured");
+		command_print(CMD_CTX, "current target doesn't have an ETM configured");
 		return ERROR_FAIL;
 	}
 
-	if ((retval = etmv1_analyze_trace(etm_ctx, cmd_ctx)) != ERROR_OK)
+	if ((retval = etmv1_analyze_trace(etm_ctx, CMD_CTX)) != ERROR_OK)
 	{
 		switch (retval)
 		{
 			case ERROR_ETM_ANALYSIS_FAILED:
-				command_print(cmd_ctx, "further analysis failed (corrupted trace data or just end of data");
+				command_print(CMD_CTX, "further analysis failed (corrupted trace data or just end of data");
 				break;
 			case ERROR_TRACE_INSTRUCTION_UNAVAILABLE:
-				command_print(cmd_ctx, "no instruction for current address available, analysis aborted");
+				command_print(CMD_CTX, "no instruction for current address available, analysis aborted");
 				break;
 			case ERROR_TRACE_IMAGE_UNAVAILABLE:
-				command_print(cmd_ctx, "no image available for trace analysis");
+				command_print(CMD_CTX, "no image available for trace analysis");
 				break;
 			default:
-				command_print(cmd_ctx, "unknown error: %i", retval);
+				command_print(CMD_CTX, "unknown error: %i", retval);
 		}
 	}
 
 	return retval;
 }
 
-int etm_register_commands(struct command_context *cmd_ctx)
-{
-	etm_cmd = register_command(cmd_ctx, NULL, "etm", NULL, COMMAND_ANY, "Embedded Trace Macrocell");
-
-	register_command(cmd_ctx, etm_cmd, "config", handle_etm_config_command,
-		COMMAND_CONFIG, "etm config <target> <port_width> <port_mode> <clocking> <capture_driver>");
+static const struct command_registration etm_config_command_handlers[] = {
+	{
+		.name = "config",
+		.handler = &handle_etm_config_command,
+		.mode = COMMAND_CONFIG,
+		.usage = "<target> <port_width> <port_mode> "
+			"<clocking> <capture_driver>",
+	},
+	COMMAND_REGISTRATION_DONE
+};
+const struct command_registration etm_command_handlers[] = {
+	{
+		.name = "etm",
+		.mode = COMMAND_ANY,
+		.help = "Emebdded Trace Macrocell command group",
+		.chain = etm_config_command_handlers,
+	},
+	COMMAND_REGISTRATION_DONE
+};
 
-	return ERROR_OK;
-}
+static const struct command_registration etm_exec_command_handlers[] = {
+	{
+		.name = "tracemode", handle_etm_tracemode_command,
+		.mode = COMMAND_EXEC,
+		.help = "configure/display trace mode",
+		.usage = "<none | data | address | all> "
+			"<context_id_bits> <cycle_accurate> <branch_output>",
+	},
+	{
+		.name = "info",
+		.handler = &handle_etm_info_command,
+		.mode = COMMAND_EXEC,
+		.help = "display info about the current target's ETM",
+	},
+	{
+		.name = "trigger_percent",
+		.handler = &handle_etm_trigger_percent_command,
+		.mode = COMMAND_EXEC,
+		.help = "amount (<percent>) of trace buffer "
+			"to be filled after the trigger occured",
+	},
+	{
+		.name = "status",
+		.handler = &handle_etm_status_command,
+		.mode = COMMAND_EXEC,
+		.help = "display current target's ETM status",
+	},
+	{
+		.name = "start",
+		.handler = &handle_etm_start_command,
+		.mode = COMMAND_EXEC,
+		.help = "start ETM trace collection",
+	},
+	{
+		.name = "stop",
+		.handler = &handle_etm_stop_command,
+		.mode = COMMAND_EXEC,
+		.help = "stop ETM trace collection",
+	},
+	{
+		.name = "analyze",
+		.handler = &handle_etm_analyze_command,
+		.mode = COMMAND_EXEC,
+		.help = "anaylze collected ETM trace",
+	},
+	{
+		.name = "image",
+		.handler = &handle_etm_image_command,
+		.mode = COMMAND_EXEC,
+		.help = "load image from <file> [base address]",
+	},
+	{
+		.name = "dump",
+		.handler = &handle_etm_dump_command,
+		.mode = COMMAND_EXEC,
+		.help = "dump captured trace data <file>",
+	},
+	{
+		.name = "load",
+		.handler = &handle_etm_load_command,
+		.mode = COMMAND_EXEC,
+		.help = "load trace data for analysis <file>",
+	},
+	COMMAND_REGISTRATION_DONE
+};
 
 static int etm_register_user_commands(struct command_context *cmd_ctx)
 {
-	register_command(cmd_ctx, etm_cmd, "tracemode", handle_etm_tracemode_command,
-		COMMAND_EXEC, "configure/display trace mode: "
-			"<none | data | address | all> "
-			"<context_id_bits> <cycle_accurate> <branch_output>");
-
-	register_command(cmd_ctx, etm_cmd, "info", handle_etm_info_command,
-		COMMAND_EXEC, "display info about the current target's ETM");
-
-	register_command(cmd_ctx, etm_cmd, "trigger_percent", handle_etm_trigger_percent_command,
-		COMMAND_EXEC, "amount (<percent>) of trace buffer to be filled after the trigger occured");
-	register_command(cmd_ctx, etm_cmd, "status", handle_etm_status_command,
-		COMMAND_EXEC, "display current target's ETM status");
-	register_command(cmd_ctx, etm_cmd, "start", handle_etm_start_command,
-		COMMAND_EXEC, "start ETM trace collection");
-	register_command(cmd_ctx, etm_cmd, "stop", handle_etm_stop_command,
-		COMMAND_EXEC, "stop ETM trace collection");
-
-	register_command(cmd_ctx, etm_cmd, "analyze", handle_etm_analyze_command,
-		COMMAND_EXEC, "anaylze collected ETM trace");
-
-	register_command(cmd_ctx, etm_cmd, "image", handle_etm_image_command,
-		COMMAND_EXEC, "load image from <file> [base address]");
-
-	register_command(cmd_ctx, etm_cmd, "dump", handle_etm_dump_command,
-		COMMAND_EXEC, "dump captured trace data <file>");
-	register_command(cmd_ctx, etm_cmd, "load", handle_etm_load_command,
-		COMMAND_EXEC, "load trace data for analysis <file>");
-
-	return ERROR_OK;
+	struct command *etm_cmd = command_find_in_context(cmd_ctx, "etm");
+	return register_commands(cmd_ctx, etm_cmd, etm_exec_command_handlers);
 }