target: add Espressif ESP32-S2 basic support
[fw/openocd] / src / target / target.c
index 450e231c6c990c53a30a28bb8e2f50c6571d6ced..e2004e4a9e139b53fc314bdc602120552a73b30b 100644 (file)
@@ -41,6 +41,7 @@
 #include "config.h"
 #endif
 
+#include <helper/align.h>
 #include <helper/time_support.h>
 #include <jtag/jtag.h>
 #include <flash/nor/core.h>
@@ -55,6 +56,8 @@
 #include "rtos/rtos.h"
 #include "transport/transport.h"
 #include "arm_cti.h"
+#include "smp.h"
+#include "semihosting_common.h"
 
 /* default halt wait timeout (ms) */
 #define DEFAULT_HALT_TIMEOUT 5000
@@ -102,6 +105,7 @@ extern struct target_type hla_target;
 extern struct target_type nds32_v2_target;
 extern struct target_type nds32_v3_target;
 extern struct target_type nds32_v3m_target;
+extern struct target_type esp32s2_target;
 extern struct target_type or1k_target;
 extern struct target_type quark_x10xx_target;
 extern struct target_type quark_d20xx_target;
@@ -138,6 +142,7 @@ static struct target_type *target_types[] = {
        &nds32_v2_target,
        &nds32_v3_target,
        &nds32_v3m_target,
+       &esp32s2_target,
        &or1k_target,
        &quark_x10xx_target,
        &quark_d20xx_target,
@@ -154,9 +159,11 @@ static struct target_type *target_types[] = {
 struct target *all_targets;
 static struct target_event_callback *target_event_callbacks;
 static struct target_timer_callback *target_timer_callbacks;
+static int64_t target_timer_next_event_value;
 static LIST_HEAD(target_reset_callback_list);
 static LIST_HEAD(target_trace_callback_list);
-static const int polling_interval = 100;
+static const int polling_interval = TARGET_DEFAULT_POLLING_INTERVAL;
+static LIST_HEAD(empty_smp_targets);
 
 static const struct jim_nvp nvp_assert[] = {
        { .name = "assert", NVP_ASSERT },
@@ -188,7 +195,7 @@ static const char *target_strerror_safe(int err)
        const struct jim_nvp *n;
 
        n = jim_nvp_value2name_simple(nvp_error_target, err);
-       if (n->name == NULL)
+       if (!n->name)
                return "unknown";
        else
                return n->name;
@@ -234,6 +241,15 @@ static const struct jim_nvp nvp_target_event[] = {
 
        { .value = TARGET_EVENT_TRACE_CONFIG, .name = "trace-config" },
 
+       { .value = TARGET_EVENT_SEMIHOSTING_USER_CMD_0x100, .name = "semihosting-user-cmd-0x100" },
+       { .value = TARGET_EVENT_SEMIHOSTING_USER_CMD_0x101, .name = "semihosting-user-cmd-0x101" },
+       { .value = TARGET_EVENT_SEMIHOSTING_USER_CMD_0x102, .name = "semihosting-user-cmd-0x102" },
+       { .value = TARGET_EVENT_SEMIHOSTING_USER_CMD_0x103, .name = "semihosting-user-cmd-0x103" },
+       { .value = TARGET_EVENT_SEMIHOSTING_USER_CMD_0x104, .name = "semihosting-user-cmd-0x104" },
+       { .value = TARGET_EVENT_SEMIHOSTING_USER_CMD_0x105, .name = "semihosting-user-cmd-0x105" },
+       { .value = TARGET_EVENT_SEMIHOSTING_USER_CMD_0x106, .name = "semihosting-user-cmd-0x106" },
+       { .value = TARGET_EVENT_SEMIHOSTING_USER_CMD_0x107, .name = "semihosting-user-cmd-0x107" },
+
        { .name = NULL, .value = -1 }
 };
 
@@ -484,7 +500,7 @@ struct target *get_target(const char *id)
 
        /* try as tcltarget name */
        for (target = all_targets; target; target = target->next) {
-               if (target_name(target) == NULL)
+               if (!target_name(target))
                        continue;
                if (strcmp(id, target_name(target)) == 0)
                        return target;
@@ -526,7 +542,7 @@ struct target *get_current_target(struct command_context *cmd_ctx)
 {
        struct target *target = get_current_target_or_null(cmd_ctx);
 
-       if (target == NULL) {
+       if (!target) {
                LOG_ERROR("BUG: current_target out of bounds");
                exit(-1);
        }
@@ -663,7 +679,7 @@ static int target_process_reset(struct command_invocation *cmd, enum target_rese
        int retval;
        struct jim_nvp *n;
        n = jim_nvp_value2name_simple(nvp_reset_modes, reset_mode);
-       if (n->name == NULL) {
+       if (!n->name) {
                LOG_ERROR("invalid reset mode");
                return ERROR_FAIL;
        }
@@ -715,6 +731,15 @@ static int no_mmu(struct target *target, int *enabled)
        return ERROR_OK;
 }
 
+/**
+ * Reset the @c examined flag for the given target.
+ * Pure paranoia -- targets are zeroed on allocation.
+ */
+static inline void target_reset_examined(struct target *target)
+{
+       target->examined = false;
+}
+
 static int default_examine(struct target *target)
 {
        target_set_examined(target);
@@ -735,10 +760,12 @@ int target_examine_one(struct target *target)
 
        int retval = target->type->examine(target);
        if (retval != ERROR_OK) {
+               target_reset_examined(target);
                target_call_event_callbacks(target, TARGET_EVENT_EXAMINE_FAIL);
                return retval;
        }
 
+       target_set_examined(target);
        target_call_event_callbacks(target, TARGET_EVENT_EXAMINE_END);
 
        return ERROR_OK;
@@ -826,7 +853,7 @@ static int target_soft_reset_halt(struct target *target)
 int target_run_algorithm(struct target *target,
                int num_mem_params, struct mem_param *mem_params,
                int num_reg_params, struct reg_param *reg_param,
-               uint32_t entry_point, uint32_t exit_point,
+               target_addr_t entry_point, target_addr_t exit_point,
                int timeout_ms, void *arch_info)
 {
        int retval = ERROR_FAIL;
@@ -867,7 +894,7 @@ done:
 int target_start_algorithm(struct target *target,
                int num_mem_params, struct mem_param *mem_params,
                int num_reg_params, struct reg_param *reg_params,
-               uint32_t entry_point, uint32_t exit_point,
+               target_addr_t entry_point, target_addr_t exit_point,
                void *arch_info)
 {
        int retval = ERROR_FAIL;
@@ -911,7 +938,7 @@ done:
 int target_wait_algorithm(struct target *target,
                int num_mem_params, struct mem_param *mem_params,
                int num_reg_params, struct reg_param *reg_params,
-               uint32_t exit_point, int timeout_ms,
+               target_addr_t exit_point, int timeout_ms,
                void *arch_info)
 {
        int retval = ERROR_FAIL;
@@ -1003,7 +1030,7 @@ int target_run_flash_async_algorithm(struct target *target,
        uint32_t rp = fifo_start_addr;
 
        /* validate block_size is 2^n */
-       assert(!block_size || !(block_size & (block_size - 1)));
+       assert(IS_PWR_OF_2(block_size));
 
        retval = target_write_u32(target, wp_addr, wp);
        if (retval != ERROR_OK)
@@ -1041,7 +1068,7 @@ int target_run_flash_async_algorithm(struct target *target,
                        break;
                }
 
-               if (((rp - fifo_start_addr) & (block_size - 1)) || rp < fifo_start_addr || rp >= fifo_end_addr) {
+               if (!IS_ALIGNED(rp - fifo_start_addr, block_size) || rp < fifo_start_addr || rp >= fifo_end_addr) {
                        LOG_ERROR("corrupted fifo read pointer 0x%" PRIx32, rp);
                        break;
                }
@@ -1156,7 +1183,7 @@ int target_run_read_async_algorithm(struct target *target,
        uint32_t rp = fifo_start_addr;
 
        /* validate block_size is 2^n */
-       assert(!block_size || !(block_size & (block_size - 1)));
+       assert(IS_PWR_OF_2(block_size));
 
        retval = target_write_u32(target, wp_addr, wp);
        if (retval != ERROR_OK)
@@ -1193,7 +1220,7 @@ int target_run_read_async_algorithm(struct target *target,
                        break;
                }
 
-               if (((wp - fifo_start_addr) & (block_size - 1)) || wp < fifo_start_addr || wp >= fifo_end_addr) {
+               if (!IS_ALIGNED(wp - fifo_start_addr, block_size) || wp < fifo_start_addr || wp >= fifo_end_addr) {
                        LOG_ERROR("corrupted fifo write pointer 0x%" PRIx32, wp);
                        break;
                }
@@ -1397,7 +1424,7 @@ int target_hit_watchpoint(struct target *target,
                return ERROR_TARGET_NOT_HALTED;
        }
 
-       if (target->type->hit_watchpoint == NULL) {
+       if (!target->type->hit_watchpoint) {
                /* For backward compatible, if hit_watchpoint is not implemented,
                 * return ERROR_FAIL such that gdb_server will not take the nonsense
                 * information. */
@@ -1409,7 +1436,7 @@ int target_hit_watchpoint(struct target *target,
 
 const char *target_get_gdb_arch(struct target *target)
 {
-       if (target->type->get_gdb_arch == NULL)
+       if (!target->type->get_gdb_arch)
                return NULL;
        return target->type->get_gdb_arch(target);
 }
@@ -1520,15 +1547,6 @@ static int target_profiling(struct target *target, uint32_t *samples,
                        num_samples, seconds);
 }
 
-/**
- * Reset the @c examined flag for the given target.
- * Pure paranoia -- targets are zeroed on allocation.
- */
-static void target_reset_examined(struct target *target)
-{
-       target->examined = false;
-}
-
 static int handle_target(void *priv);
 
 static int target_init_one(struct command_context *cmd_ctx,
@@ -1537,16 +1555,16 @@ static int target_init_one(struct command_context *cmd_ctx,
        target_reset_examined(target);
 
        struct target_type *type = target->type;
-       if (type->examine == NULL)
+       if (!type->examine)
                type->examine = default_examine;
 
-       if (type->check_reset == NULL)
+       if (!type->check_reset)
                type->check_reset = default_check_reset;
 
-       assert(type->init_target != NULL);
+       assert(type->init_target);
 
        int retval = type->init_target(cmd_ctx, target);
-       if (ERROR_OK != retval) {
+       if (retval != ERROR_OK) {
                LOG_ERROR("target '%s' init failed", target_name(target));
                return retval;
        }
@@ -1555,7 +1573,7 @@ static int target_init_one(struct command_context *cmd_ctx,
         * implement it in stages, but warn if we need to do so.
         */
        if (type->mmu) {
-               if (type->virt2phys == NULL) {
+               if (!type->virt2phys) {
                        LOG_ERROR("type '%s' is missing virt2phys", type->name);
                        type->virt2phys = identity_virt2phys;
                }
@@ -1573,19 +1591,19 @@ static int target_init_one(struct command_context *cmd_ctx,
                type->virt2phys = identity_virt2phys;
        }
 
-       if (target->type->read_buffer == NULL)
+       if (!target->type->read_buffer)
                target->type->read_buffer = target_read_buffer_default;
 
-       if (target->type->write_buffer == NULL)
+       if (!target->type->write_buffer)
                target->type->write_buffer = target_write_buffer_default;
 
-       if (target->type->get_gdb_fileio_info == NULL)
+       if (!target->type->get_gdb_fileio_info)
                target->type->get_gdb_fileio_info = target_get_gdb_fileio_info_default;
 
-       if (target->type->gdb_fileio_end == NULL)
+       if (!target->type->gdb_fileio_end)
                target->type->gdb_fileio_end = target_gdb_fileio_end_default;
 
-       if (target->type->profiling == NULL)
+       if (!target->type->profiling)
                target->type->profiling = target_profiling_default;
 
        return ERROR_OK;
@@ -1598,7 +1616,7 @@ static int target_init(struct command_context *cmd_ctx)
 
        for (target = all_targets; target; target = target->next) {
                retval = target_init_one(cmd_ctx, target);
-               if (ERROR_OK != retval)
+               if (retval != ERROR_OK)
                        return retval;
        }
 
@@ -1606,12 +1624,12 @@ static int target_init(struct command_context *cmd_ctx)
                return ERROR_OK;
 
        retval = target_register_user_commands(cmd_ctx);
-       if (ERROR_OK != retval)
+       if (retval != ERROR_OK)
                return retval;
 
        retval = target_register_timer_callback(&handle_target,
                        polling_interval, TARGET_TIMER_TYPE_PERIODIC, cmd_ctx->interp);
-       if (ERROR_OK != retval)
+       if (retval != ERROR_OK)
                return retval;
 
        return ERROR_OK;
@@ -1632,15 +1650,15 @@ COMMAND_HANDLER(handle_target_init_command)
        target_initialized = true;
 
        retval = command_run_line(CMD_CTX, "init_targets");
-       if (ERROR_OK != retval)
+       if (retval != ERROR_OK)
                return retval;
 
        retval = command_run_line(CMD_CTX, "init_target_events");
-       if (ERROR_OK != retval)
+       if (retval != ERROR_OK)
                return retval;
 
        retval = command_run_line(CMD_CTX, "init_board");
-       if (ERROR_OK != retval)
+       if (retval != ERROR_OK)
                return retval;
 
        LOG_DEBUG("Initializing targets...");
@@ -1652,7 +1670,7 @@ int target_register_event_callback(int (*callback)(struct target *target,
 {
        struct target_event_callback **callbacks_p = &target_event_callbacks;
 
-       if (callback == NULL)
+       if (!callback)
                return ERROR_COMMAND_SYNTAX_ERROR;
 
        if (*callbacks_p) {
@@ -1674,11 +1692,11 @@ int target_register_reset_callback(int (*callback)(struct target *target,
 {
        struct target_reset_callback *entry;
 
-       if (callback == NULL)
+       if (!callback)
                return ERROR_COMMAND_SYNTAX_ERROR;
 
        entry = malloc(sizeof(struct target_reset_callback));
-       if (entry == NULL) {
+       if (!entry) {
                LOG_ERROR("error allocating buffer for reset callback entry");
                return ERROR_COMMAND_SYNTAX_ERROR;
        }
@@ -1696,11 +1714,11 @@ int target_register_trace_callback(int (*callback)(struct target *target,
 {
        struct target_trace_callback *entry;
 
-       if (callback == NULL)
+       if (!callback)
                return ERROR_COMMAND_SYNTAX_ERROR;
 
        entry = malloc(sizeof(struct target_trace_callback));
-       if (entry == NULL) {
+       if (!entry) {
                LOG_ERROR("error allocating buffer for trace callback entry");
                return ERROR_COMMAND_SYNTAX_ERROR;
        }
@@ -1718,7 +1736,7 @@ int target_register_timer_callback(int (*callback)(void *priv),
 {
        struct target_timer_callback **callbacks_p = &target_timer_callbacks;
 
-       if (callback == NULL)
+       if (!callback)
                return ERROR_COMMAND_SYNTAX_ERROR;
 
        if (*callbacks_p) {
@@ -1733,8 +1751,8 @@ int target_register_timer_callback(int (*callback)(void *priv),
        (*callbacks_p)->time_ms = time_ms;
        (*callbacks_p)->removed = false;
 
-       gettimeofday(&(*callbacks_p)->when, NULL);
-       timeval_add_time(&(*callbacks_p)->when, 0, time_ms * 1000);
+       (*callbacks_p)->when = timeval_ms() + time_ms;
+       target_timer_next_event_value = MIN(target_timer_next_event_value, (*callbacks_p)->when);
 
        (*callbacks_p)->priv = priv;
        (*callbacks_p)->next = NULL;
@@ -1748,7 +1766,7 @@ int target_unregister_event_callback(int (*callback)(struct target *target,
        struct target_event_callback **p = &target_event_callbacks;
        struct target_event_callback *c = target_event_callbacks;
 
-       if (callback == NULL)
+       if (!callback)
                return ERROR_COMMAND_SYNTAX_ERROR;
 
        while (c) {
@@ -1770,7 +1788,7 @@ int target_unregister_reset_callback(int (*callback)(struct target *target,
 {
        struct target_reset_callback *entry;
 
-       if (callback == NULL)
+       if (!callback)
                return ERROR_COMMAND_SYNTAX_ERROR;
 
        list_for_each_entry(entry, &target_reset_callback_list, list) {
@@ -1789,7 +1807,7 @@ int target_unregister_trace_callback(int (*callback)(struct target *target,
 {
        struct target_trace_callback *entry;
 
-       if (callback == NULL)
+       if (!callback)
                return ERROR_COMMAND_SYNTAX_ERROR;
 
        list_for_each_entry(entry, &target_trace_callback_list, list) {
@@ -1805,7 +1823,7 @@ int target_unregister_trace_callback(int (*callback)(struct target *target,
 
 int target_unregister_timer_callback(int (*callback)(void *priv), void *priv)
 {
-       if (callback == NULL)
+       if (!callback)
                return ERROR_COMMAND_SYNTAX_ERROR;
 
        for (struct target_timer_callback *c = target_timer_callbacks;
@@ -1830,7 +1848,7 @@ int target_call_event_callbacks(struct target *target, enum target_event event)
        }
 
        LOG_DEBUG("target event %i (%s) for core %s", event,
-                       jim_nvp_value2name_simple(nvp_target_event, event)->name,
+                       target_event_name(event),
                        target_name(target));
 
        target_handle_event(target, event);
@@ -1868,15 +1886,14 @@ int target_call_trace_callbacks(struct target *target, size_t len, uint8_t *data
 }
 
 static int target_timer_callback_periodic_restart(
-               struct target_timer_callback *cb, struct timeval *now)
+               struct target_timer_callback *cb, int64_t *now)
 {
-       cb->when = *now;
-       timeval_add_time(&cb->when, 0, cb->time_ms * 1000L);
+       cb->when = *now + cb->time_ms;
        return ERROR_OK;
 }
 
 static int target_call_timer_callback(struct target_timer_callback *cb,
-               struct timeval *now)
+               int64_t *now)
 {
        cb->callback(cb->priv);
 
@@ -1898,8 +1915,12 @@ static int target_call_timer_callbacks_check_time(int checktime)
 
        keep_alive();
 
-       struct timeval now;
-       gettimeofday(&now, NULL);
+       int64_t now = timeval_ms();
+
+       /* Initialize to a default value that's a ways into the future.
+        * The loop below will make it closer to now if there are
+        * callbacks that want to be called sooner. */
+       target_timer_next_event_value = now + 1000;
 
        /* Store an address of the place containing a pointer to the
         * next item; initially, that's a standalone "root of the
@@ -1915,11 +1936,14 @@ static int target_call_timer_callbacks_check_time(int checktime)
 
                bool call_it = (*callback)->callback &&
                        ((!checktime && (*callback)->type == TARGET_TIMER_TYPE_PERIODIC) ||
-                        timeval_compare(&now, &(*callback)->when) >= 0);
+                        now >= (*callback)->when);
 
                if (call_it)
                        target_call_timer_callback(*callback, &now);
 
+               if (!(*callback)->removed && (*callback)->when < target_timer_next_event_value)
+                       target_timer_next_event_value = (*callback)->when;
+
                callback = &(*callback)->next;
        }
 
@@ -1927,17 +1951,22 @@ static int target_call_timer_callbacks_check_time(int checktime)
        return ERROR_OK;
 }
 
-int target_call_timer_callbacks(void)
+int target_call_timer_callbacks()
 {
        return target_call_timer_callbacks_check_time(1);
 }
 
 /* invoke periodic callbacks immediately */
-int target_call_timer_callbacks_now(void)
+int target_call_timer_callbacks_now()
 {
        return target_call_timer_callbacks_check_time(0);
 }
 
+int64_t target_timer_next_event(void)
+{
+       return target_timer_next_event_value;
+}
+
 /* Prints the working area layout for debug purposes */
 static void print_wa_layout(struct target *target)
 {
@@ -1961,7 +1990,7 @@ static void target_split_working_area(struct working_area *area, uint32_t size)
        if (size < area->size) {
                struct working_area *new_wa = malloc(sizeof(*new_wa));
 
-               if (new_wa == NULL)
+               if (!new_wa)
                        return;
 
                new_wa->next = area->next;
@@ -2013,7 +2042,7 @@ static void target_merge_working_areas(struct target *target)
 int target_alloc_working_area_try(struct target *target, uint32_t size, struct working_area **area)
 {
        /* Reevaluate working area address based on MMU state*/
-       if (target->working_areas == NULL) {
+       if (!target->working_areas) {
                int retval;
                int enabled;
 
@@ -2072,7 +2101,7 @@ int target_alloc_working_area_try(struct target *target, uint32_t size, struct w
                c = c->next;
        }
 
-       if (c == NULL)
+       if (!c)
                return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
 
        /* Split the working area into the requested size */
@@ -2082,9 +2111,9 @@ int target_alloc_working_area_try(struct target *target, uint32_t size, struct w
                          size, c->address);
 
        if (target->backup_working_area) {
-               if (c->backup == NULL) {
+               if (!c->backup) {
                        c->backup = malloc(c->size);
-                       if (c->backup == NULL)
+                       if (!c->backup)
                                return ERROR_FAIL;
                }
 
@@ -2120,7 +2149,7 @@ static int target_restore_working_area(struct target *target, struct working_are
 {
        int retval = ERROR_OK;
 
-       if (target->backup_working_area && area->backup != NULL) {
+       if (target->backup_working_area && area->backup) {
                retval = target_write_memory(target, area->address, 4, area->size / 4, area->backup);
                if (retval != ERROR_OK)
                        LOG_ERROR("failed to restore %" PRIu32 " bytes of working area at address " TARGET_ADDR_FMT,
@@ -2133,11 +2162,10 @@ static int target_restore_working_area(struct target *target, struct working_are
 /* Restore the area's backup memory, if any, and return the area to the allocation pool */
 static int target_free_working_area_restore(struct target *target, struct working_area *area, int restore)
 {
-       int retval = ERROR_OK;
-
-       if (area->free)
-               return retval;
+       if (!area || area->free)
+               return ERROR_OK;
 
+       int retval = ERROR_OK;
        if (restore) {
                retval = target_restore_working_area(target, area);
                /* REVISIT: Perhaps the area should be freed even if restoring fails. */
@@ -2215,7 +2243,7 @@ uint32_t target_get_working_area_avail(struct target *target)
        struct working_area *c = target->working_areas;
        uint32_t max_size = 0;
 
-       if (c == NULL)
+       if (!c)
                return target->working_area_size;
 
        while (c) {
@@ -2233,6 +2261,8 @@ static void target_destroy(struct target *target)
        if (target->type->deinit_target)
                target->type->deinit_target(target);
 
+       if (target->semihosting)
+               free(target->semihosting->basedir);
        free(target->semihosting);
 
        jtag_unregister_event_callback(jtag_enable_callback, target);
@@ -2249,13 +2279,15 @@ static void target_destroy(struct target *target)
 
        /* release the targets SMP list */
        if (target->smp) {
-               struct target_list *head = target->head;
-               while (head != NULL) {
-                       struct target_list *pos = head->next;
+               struct target_list *head, *tmp;
+
+               list_for_each_entry_safe(head, tmp, target->smp_targets, lh) {
+                       list_del(&head->lh);
                        head->target->smp = 0;
                        free(head);
-                       head = pos;
                }
+               if (target->smp_targets != &empty_smp_targets)
+                       free(target->smp_targets);
                target->smp = 0;
        }
 
@@ -2301,7 +2333,7 @@ void target_quit(void)
 int target_arch_state(struct target *target)
 {
        int retval;
-       if (target == NULL) {
+       if (!target) {
                LOG_WARNING("No target has been configured");
                return ERROR_OK;
        }
@@ -2342,7 +2374,7 @@ int target_profiling_default(struct target *target, uint32_t *samples,
 
        uint32_t sample_count = 0;
        /* hopefully it is safe to cache! We want to stop/restart as quickly as possible. */
-       struct reg *reg = register_get_by_name(target->reg_cache, "pc", 1);
+       struct reg *reg = register_get_by_name(target->reg_cache, "pc", true);
 
        int retval = ERROR_OK;
        for (;;) {
@@ -2516,11 +2548,15 @@ int target_checksum_memory(struct target *target, target_addr_t address, uint32_
                LOG_ERROR("Target not examined yet");
                return ERROR_FAIL;
        }
+       if (!target->type->checksum_memory) {
+               LOG_ERROR("Target %s doesn't support checksum_memory", target_name(target));
+               return ERROR_FAIL;
+       }
 
        retval = target->type->checksum_memory(target, address, size, &checksum);
        if (retval != ERROR_OK) {
                buffer = malloc(size);
-               if (buffer == NULL) {
+               if (!buffer) {
                        LOG_ERROR("error allocating buffer for section (%" PRIu32 " bytes)", size);
                        return ERROR_COMMAND_SYNTAX_ERROR;
                }
@@ -2555,8 +2591,8 @@ int target_blank_check_memory(struct target *target,
                return ERROR_FAIL;
        }
 
-       if (target->type->blank_check_memory == NULL)
-               return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
+       if (!target->type->blank_check_memory)
+               return ERROR_NOT_IMPLEMENTED;
 
        return target->type->blank_check_memory(target, blocks, num_blocks, erased_value);
 }
@@ -2820,7 +2856,7 @@ int target_write_phys_u8(struct target *target, target_addr_t address, uint8_t v
 static int find_target(struct command_invocation *cmd, const char *name)
 {
        struct target *target = get_target(name);
-       if (target == NULL) {
+       if (!target) {
                command_print(cmd, "Target: %s is unknown, try one of:\n", name);
                return ERROR_FAIL;
        }
@@ -2884,57 +2920,57 @@ COMMAND_HANDLER(handle_targets_command)
 
 /* every 300ms we check for reset & powerdropout and issue a "reset halt" if so. */
 
-static int powerDropout;
-static int srstAsserted;
+static int power_dropout;
+static int srst_asserted;
 
-static int runPowerRestore;
-static int runPowerDropout;
-static int runSrstAsserted;
-static int runSrstDeasserted;
+static int run_power_restore;
+static int run_power_dropout;
+static int run_srst_asserted;
+static int run_srst_deasserted;
 
 static int sense_handler(void)
 {
-       static int prevSrstAsserted;
-       static int prevPowerdropout;
+       static int prev_srst_asserted;
+       static int prev_power_dropout;
 
-       int retval = jtag_power_dropout(&powerDropout);
+       int retval = jtag_power_dropout(&power_dropout);
        if (retval != ERROR_OK)
                return retval;
 
-       int powerRestored;
-       powerRestored = prevPowerdropout && !powerDropout;
-       if (powerRestored)
-               runPowerRestore = 1;
+       int power_restored;
+       power_restored = prev_power_dropout && !power_dropout;
+       if (power_restored)
+               run_power_restore = 1;
 
        int64_t current = timeval_ms();
-       static int64_t lastPower;
-       bool waitMore = lastPower + 2000 > current;
-       if (powerDropout && !waitMore) {
-               runPowerDropout = 1;
-               lastPower = current;
+       static int64_t last_power;
+       bool wait_more = last_power + 2000 > current;
+       if (power_dropout && !wait_more) {
+               run_power_dropout = 1;
+               last_power = current;
        }
 
-       retval = jtag_srst_asserted(&srstAsserted);
+       retval = jtag_srst_asserted(&srst_asserted);
        if (retval != ERROR_OK)
                return retval;
 
-       int srstDeasserted;
-       srstDeasserted = prevSrstAsserted && !srstAsserted;
+       int srst_deasserted;
+       srst_deasserted = prev_srst_asserted && !srst_asserted;
 
-       static int64_t lastSrst;
-       waitMore = lastSrst + 2000 > current;
-       if (srstDeasserted && !waitMore) {
-               runSrstDeasserted = 1;
-               lastSrst = current;
+       static int64_t last_srst;
+       wait_more = last_srst + 2000 > current;
+       if (srst_deasserted && !wait_more) {
+               run_srst_deasserted = 1;
+               last_srst = current;
        }
 
-       if (!prevSrstAsserted && srstAsserted)
-               runSrstAsserted = 1;
+       if (!prev_srst_asserted && srst_asserted)
+               run_srst_asserted = 1;
 
-       prevSrstAsserted = srstAsserted;
-       prevPowerdropout = powerDropout;
+       prev_srst_asserted = srst_asserted;
+       prev_power_dropout = power_dropout;
 
-       if (srstDeasserted || powerRestored) {
+       if (srst_deasserted || power_restored) {
                /* Other than logging the event we can't do anything here.
                 * Issuing a reset is a particularly bad idea as we might
                 * be inside a reset already.
@@ -2965,21 +3001,21 @@ static int handle_target(void *priv)
                 * clearing the flags after running these events.
                 */
                int did_something = 0;
-               if (runSrstAsserted) {
+               if (run_srst_asserted) {
                        LOG_INFO("srst asserted detected, running srst_asserted proc.");
                        Jim_Eval(interp, "srst_asserted");
                        did_something = 1;
                }
-               if (runSrstDeasserted) {
+               if (run_srst_deasserted) {
                        Jim_Eval(interp, "srst_deasserted");
                        did_something = 1;
                }
-               if (runPowerDropout) {
+               if (run_power_dropout) {
                        LOG_INFO("Power dropout detected, running power_dropout proc.");
                        Jim_Eval(interp, "power_dropout");
                        did_something = 1;
                }
-               if (runPowerRestore) {
+               if (run_power_restore) {
                        Jim_Eval(interp, "power_restore");
                        did_something = 1;
                }
@@ -2991,10 +3027,10 @@ static int handle_target(void *priv)
 
                /* clear action flags */
 
-               runSrstAsserted = 0;
-               runSrstDeasserted = 0;
-               runPowerRestore = 0;
-               runPowerDropout = 0;
+               run_srst_asserted = 0;
+               run_srst_deasserted = 0;
+               run_power_restore = 0;
+               run_power_dropout = 0;
 
                recursive = 0;
        }
@@ -3020,7 +3056,7 @@ static int handle_target(void *priv)
                target->backoff.count = 0;
 
                /* only poll target if we've got power and srst isn't asserted */
-               if (!powerDropout && !srstAsserted) {
+               if (!power_dropout && !srst_asserted) {
                        /* polling may fail silently until the target has been examined */
                        retval = target_poll(target);
                        if (retval != ERROR_OK) {
@@ -3042,7 +3078,7 @@ static int handle_target(void *priv)
                                /* Target examination could have failed due to unstable connection,
                                 * but we set the examined flag anyway to repoll it later */
                                if (retval != ERROR_OK) {
-                                       target->examined = true;
+                                       target_set_examined(target);
                                        LOG_USER("Examination failed, GDB will be halted. Polling again in %dms",
                                                 target->backoff.times * polling_interval);
                                        return retval;
@@ -3059,20 +3095,16 @@ static int handle_target(void *priv)
 
 COMMAND_HANDLER(handle_reg_command)
 {
-       struct target *target;
-       struct reg *reg = NULL;
-       unsigned count = 0;
-       char *value;
-
        LOG_DEBUG("-");
 
-       target = get_current_target(CMD_CTX);
+       struct target *target = get_current_target(CMD_CTX);
+       struct reg *reg = NULL;
 
        /* list all available registers for the current target */
        if (CMD_ARGC == 0) {
                struct reg_cache *cache = target->reg_cache;
 
-               count = 0;
+               unsigned int count = 0;
                while (cache) {
                        unsigned i;
 
@@ -3085,7 +3117,7 @@ COMMAND_HANDLER(handle_reg_command)
                                        continue;
                                /* only print cached values if they are valid */
                                if (reg->valid) {
-                                       value = buf_to_hex_str(reg->value,
+                                       char *value = buf_to_hex_str(reg->value,
                                                        reg->size);
                                        command_print(CMD,
                                                        "(%i) %s (/%" PRIu32 "): 0x%s%s",
@@ -3113,7 +3145,7 @@ COMMAND_HANDLER(handle_reg_command)
                COMMAND_PARSE_NUMBER(uint, CMD_ARGV[0], num);
 
                struct reg_cache *cache = target->reg_cache;
-               count = 0;
+               unsigned int count = 0;
                while (cache) {
                        unsigned i;
                        for (i = 0; i < cache->num_regs; i++) {
@@ -3134,13 +3166,13 @@ COMMAND_HANDLER(handle_reg_command)
                }
        } else {
                /* access a single register by its name */
-               reg = register_get_by_name(target->reg_cache, CMD_ARGV[0], 1);
+               reg = register_get_by_name(target->reg_cache, CMD_ARGV[0], true);
 
                if (!reg)
                        goto not_found;
        }
 
-       assert(reg != NULL); /* give clang a hint that we *know* reg is != NULL here */
+       assert(reg); /* give clang a hint that we *know* reg is != NULL here */
 
        if (!reg->exist)
                goto not_found;
@@ -3151,9 +3183,14 @@ COMMAND_HANDLER(handle_reg_command)
                if ((CMD_ARGC == 2) && (strcmp(CMD_ARGV[1], "force") == 0))
                        reg->valid = 0;
 
-               if (reg->valid == 0)
-                       reg->type->get(reg);
-               value = buf_to_hex_str(reg->value, reg->size);
+               if (reg->valid == 0) {
+                       int retval = reg->type->get(reg);
+                       if (retval != ERROR_OK) {
+                               LOG_ERROR("Could not read register '%s'", reg->name);
+                               return retval;
+                       }
+               }
+               char *value = buf_to_hex_str(reg->value, reg->size);
                command_print(CMD, "%s (/%i): 0x%s", reg->name, (int)(reg->size), value);
                free(value);
                return ERROR_OK;
@@ -3162,19 +3199,22 @@ COMMAND_HANDLER(handle_reg_command)
        /* set register value */
        if (CMD_ARGC == 2) {
                uint8_t *buf = malloc(DIV_ROUND_UP(reg->size, 8));
-               if (buf == NULL)
+               if (!buf)
                        return ERROR_FAIL;
                str_to_buf(CMD_ARGV[1], strlen(CMD_ARGV[1]), buf, reg->size, 0);
 
-               reg->type->set(reg, buf);
-
-               value = buf_to_hex_str(reg->value, reg->size);
-               command_print(CMD, "%s (/%i): 0x%s", reg->name, (int)(reg->size), value);
-               free(value);
+               int retval = reg->type->set(reg, buf);
+               if (retval != ERROR_OK) {
+                       LOG_ERROR("Could not write to register '%s'", reg->name);
+               } else {
+                       char *value = buf_to_hex_str(reg->value, reg->size);
+                       command_print(CMD, "%s (/%i): 0x%s", reg->name, (int)(reg->size), value);
+                       free(value);
+               }
 
                free(buf);
 
-               return ERROR_OK;
+               return retval;
        }
 
        return ERROR_COMMAND_SYNTAX_ERROR;
@@ -3221,7 +3261,7 @@ COMMAND_HANDLER(handle_wait_halt_command)
        unsigned ms = DEFAULT_HALT_TIMEOUT;
        if (1 == CMD_ARGC) {
                int retval = parse_uint(CMD_ARGV[0], &ms);
-               if (ERROR_OK != retval)
+               if (retval != ERROR_OK)
                        return ERROR_COMMAND_SYNTAX_ERROR;
        }
 
@@ -3277,13 +3317,13 @@ COMMAND_HANDLER(handle_halt_command)
        target->verbose_halt_msg = true;
 
        int retval = target_halt(target);
-       if (ERROR_OK != retval)
+       if (retval != ERROR_OK)
                return retval;
 
        if (CMD_ARGC == 1) {
                unsigned wait_local;
                retval = parse_uint(CMD_ARGV[0], &wait_local);
-               if (ERROR_OK != retval)
+               if (retval != ERROR_OK)
                        return ERROR_COMMAND_SYNTAX_ERROR;
                if (!wait_local)
                        return ERROR_OK;
@@ -3312,7 +3352,7 @@ COMMAND_HANDLER(handle_reset_command)
        if (CMD_ARGC == 1) {
                const struct jim_nvp *n;
                n = jim_nvp_name2value_simple(nvp_reset_modes, CMD_ARGV[0]);
-               if ((n->name == NULL) || (n->value == RESET_UNKNOWN))
+               if ((!n->name) || (n->value == RESET_UNKNOWN))
                        return ERROR_COMMAND_SYNTAX_ERROR;
                reset_mode = n->value;
        }
@@ -3471,14 +3511,14 @@ COMMAND_HANDLER(handle_md_command)
                COMMAND_PARSE_NUMBER(uint, CMD_ARGV[1], count);
 
        uint8_t *buffer = calloc(count, size);
-       if (buffer == NULL) {
+       if (!buffer) {
                LOG_ERROR("Failed to allocate md read buffer");
                return ERROR_FAIL;
        }
 
        struct target *target = get_current_target(CMD_CTX);
        int retval = fn(target, address, size, count, buffer);
-       if (ERROR_OK == retval)
+       if (retval == ERROR_OK)
                target_handle_md_output(CMD, target, address, size, count, buffer);
 
        free(buffer);
@@ -3502,7 +3542,7 @@ static int target_fill_mem(struct target *target,
         * to fill large memory areas with any sane speed */
        const unsigned chunk_size = 16384;
        uint8_t *target_buf = malloc(chunk_size * data_size);
-       if (target_buf == NULL) {
+       if (!target_buf) {
                LOG_ERROR("Out of memory");
                return ERROR_FAIL;
        }
@@ -3592,7 +3632,7 @@ COMMAND_HANDLER(handle_mw_command)
        return target_fill_mem(target, address, fn, wordsize, value, count);
 }
 
-static COMMAND_HELPER(parse_load_image_command_CMD_ARGV, struct image *image,
+static COMMAND_HELPER(parse_load_image_command, struct image *image,
                target_addr_t *min_address, target_addr_t *max_address)
 {
        if (CMD_ARGC < 1 || CMD_ARGC > 5)
@@ -3633,9 +3673,9 @@ COMMAND_HANDLER(handle_load_image_command)
        target_addr_t max_address = -1;
        struct image image;
 
-       int retval = CALL_COMMAND_HANDLER(parse_load_image_command_CMD_ARGV,
+       int retval = CALL_COMMAND_HANDLER(parse_load_image_command,
                        &image, &min_address, &max_address);
-       if (ERROR_OK != retval)
+       if (retval != ERROR_OK)
                return retval;
 
        struct target *target = get_current_target(CMD_CTX);
@@ -3650,7 +3690,7 @@ COMMAND_HANDLER(handle_load_image_command)
        retval = ERROR_OK;
        for (unsigned int i = 0; i < image.num_sections; i++) {
                buffer = malloc(image.sections[i].size);
-               if (buffer == NULL) {
+               if (!buffer) {
                        command_print(CMD,
                                                  "error allocating buffer for section (%d bytes)",
                                                  (int)(image.sections[i].size));
@@ -3696,7 +3736,7 @@ COMMAND_HANDLER(handle_load_image_command)
                free(buffer);
        }
 
-       if ((ERROR_OK == retval) && (duration_measure(&bench) == ERROR_OK)) {
+       if ((retval == ERROR_OK) && (duration_measure(&bench) == ERROR_OK)) {
                command_print(CMD, "downloaded %" PRIu32 " bytes "
                                "in %fs (%0.3f KiB/s)", image_size,
                                duration_elapsed(&bench), duration_kbps(&bench, image_size));
@@ -3753,7 +3793,7 @@ COMMAND_HANDLER(handle_dump_image_command)
 
        free(buffer);
 
-       if ((ERROR_OK == retval) && (duration_measure(&bench) == ERROR_OK)) {
+       if ((retval == ERROR_OK) && (duration_measure(&bench) == ERROR_OK)) {
                size_t filesize;
                retval = fileio_size(fileio, &filesize);
                if (retval != ERROR_OK)
@@ -3821,7 +3861,7 @@ static COMMAND_HELPER(handle_verify_image_command_internal, enum verify_mode ver
        retval = ERROR_OK;
        for (unsigned int i = 0; i < image.num_sections; i++) {
                buffer = malloc(image.sections[i].size);
-               if (buffer == NULL) {
+               if (!buffer) {
                        command_print(CMD,
                                        "error allocating buffer for section (%" PRIu32 " bytes)",
                                        image.sections[i].size);
@@ -3898,7 +3938,7 @@ static COMMAND_HELPER(handle_verify_image_command_internal, enum verify_mode ver
 done:
        if (diffs > 0)
                retval = ERROR_FAIL;
-       if ((ERROR_OK == retval) && (duration_measure(&bench) == ERROR_OK)) {
+       if ((retval == ERROR_OK) && (duration_measure(&bench) == ERROR_OK)) {
                command_print(CMD, "verified %" PRIu32 " bytes "
                                "in %fs (%0.3f KiB/s)", image_size,
                                duration_elapsed(&bench), duration_kbps(&bench, image_size));
@@ -3932,26 +3972,26 @@ static int handle_bp_command_list(struct command_invocation *cmd)
                if (breakpoint->type == BKPT_SOFT) {
                        char *buf = buf_to_hex_str(breakpoint->orig_instr,
                                        breakpoint->length);
-                       command_print(cmd, "IVA breakpoint: " TARGET_ADDR_FMT ", 0x%x, %i, 0x%s",
+                       command_print(cmd, "IVA breakpoint: " TARGET_ADDR_FMT ", 0x%x, 0x%s",
                                        breakpoint->address,
                                        breakpoint->length,
-                                       breakpoint->set, buf);
+                                       buf);
                        free(buf);
                } else {
                        if ((breakpoint->address == 0) && (breakpoint->asid != 0))
-                               command_print(cmd, "Context breakpoint: 0x%8.8" PRIx32 ", 0x%x, %i",
+                               command_print(cmd, "Context breakpoint: 0x%8.8" PRIx32 ", 0x%x, %u",
                                                        breakpoint->asid,
-                                                       breakpoint->length, breakpoint->set);
+                                                       breakpoint->length, breakpoint->number);
                        else if ((breakpoint->address != 0) && (breakpoint->asid != 0)) {
-                               command_print(cmd, "Hybrid breakpoint(IVA): " TARGET_ADDR_FMT ", 0x%x, %i",
+                               command_print(cmd, "Hybrid breakpoint(IVA): " TARGET_ADDR_FMT ", 0x%x, %u",
                                                        breakpoint->address,
-                                                       breakpoint->length, breakpoint->set);
+                                                       breakpoint->length, breakpoint->number);
                                command_print(cmd, "\t|--->linked with ContextID: 0x%8.8" PRIx32,
                                                        breakpoint->asid);
                        } else
-                               command_print(cmd, "Breakpoint(IVA): " TARGET_ADDR_FMT ", 0x%x, %i",
+                               command_print(cmd, "Breakpoint(IVA): " TARGET_ADDR_FMT ", 0x%x, %u",
                                                        breakpoint->address,
-                                                       breakpoint->length, breakpoint->set);
+                                                       breakpoint->length, breakpoint->number);
                }
 
                breakpoint = breakpoint->next;
@@ -3968,27 +4008,27 @@ static int handle_bp_command_set(struct command_invocation *cmd,
        if (asid == 0) {
                retval = breakpoint_add(target, addr, length, hw);
                /* error is always logged in breakpoint_add(), do not print it again */
-               if (ERROR_OK == retval)
+               if (retval == ERROR_OK)
                        command_print(cmd, "breakpoint set at " TARGET_ADDR_FMT "", addr);
 
        } else if (addr == 0) {
-               if (target->type->add_context_breakpoint == NULL) {
+               if (!target->type->add_context_breakpoint) {
                        LOG_ERROR("Context breakpoint not available");
                        return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
                }
                retval = context_breakpoint_add(target, asid, length, hw);
                /* error is always logged in context_breakpoint_add(), do not print it again */
-               if (ERROR_OK == retval)
+               if (retval == ERROR_OK)
                        command_print(cmd, "Context breakpoint set at 0x%8.8" PRIx32 "", asid);
 
        } else {
-               if (target->type->add_hybrid_breakpoint == NULL) {
+               if (!target->type->add_hybrid_breakpoint) {
                        LOG_ERROR("Hybrid breakpoint not available");
                        return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
                }
                retval = hybrid_breakpoint_add(target, addr, asid, length, hw);
                /* error is always logged in hybrid_breakpoint_add(), do not print it again */
-               if (ERROR_OK == retval)
+               if (retval == ERROR_OK)
                        command_print(cmd, "Hybrid breakpoint set at 0x%8.8" PRIx32 "", asid);
        }
        return retval;
@@ -4119,7 +4159,7 @@ COMMAND_HANDLER(handle_wp_command)
 
        int retval = watchpoint_add(target, addr, length, type,
                        data_value, data_mask);
-       if (ERROR_OK != retval)
+       if (retval != ERROR_OK)
                LOG_ERROR("Failure setting watchpoints");
 
        return retval;
@@ -4162,44 +4202,44 @@ COMMAND_HANDLER(handle_virt2phys_command)
        return retval;
 }
 
-static void writeData(FILE *f, const void *data, size_t len)
+static void write_data(FILE *f, const void *data, size_t len)
 {
        size_t written = fwrite(data, 1, len, f);
        if (written != len)
                LOG_ERROR("failed to write %zu bytes: %s", len, strerror(errno));
 }
 
-static void writeLong(FILE *f, int l, struct target *target)
+static void write_long(FILE *f, int l, struct target *target)
 {
        uint8_t val[4];
 
        target_buffer_set_u32(target, val, l);
-       writeData(f, val, 4);
+       write_data(f, val, 4);
 }
 
-static void writeString(FILE *f, char *s)
+static void write_string(FILE *f, char *s)
 {
-       writeData(f, s, strlen(s));
+       write_data(f, s, strlen(s));
 }
 
 typedef unsigned char UNIT[2];  /* unit of profiling */
 
 /* Dump a gmon.out histogram file. */
-static void write_gmon(uint32_t *samples, uint32_t sampleNum, const char *filename, bool with_range,
+static void write_gmon(uint32_t *samples, uint32_t sample_num, const char *filename, bool with_range,
                        uint32_t start_address, uint32_t end_address, struct target *target, uint32_t duration_ms)
 {
        uint32_t i;
        FILE *f = fopen(filename, "w");
-       if (f == NULL)
+       if (!f)
                return;
-       writeString(f, "gmon");
-       writeLong(f, 0x00000001, target); /* Version */
-       writeLong(f, 0, target); /* padding */
-       writeLong(f, 0, target); /* padding */
-       writeLong(f, 0, target); /* padding */
+       write_string(f, "gmon");
+       write_long(f, 0x00000001, target); /* Version */
+       write_long(f, 0, target); /* padding */
+       write_long(f, 0, target); /* padding */
+       write_long(f, 0, target); /* padding */
 
        uint8_t zero = 0;  /* GMON_TAG_TIME_HIST */
-       writeData(f, &zero, 1);
+       write_data(f, &zero, 1);
 
        /* figure out bucket size */
        uint32_t min;
@@ -4210,7 +4250,7 @@ static void write_gmon(uint32_t *samples, uint32_t sampleNum, const char *filena
        } else {
                min = samples[0];
                max = samples[0];
-               for (i = 0; i < sampleNum; i++) {
+               for (i = 0; i < sample_num; i++) {
                        if (min > samples[i])
                                min = samples[i];
                        if (max < samples[i])
@@ -4222,50 +4262,50 @@ static void write_gmon(uint32_t *samples, uint32_t sampleNum, const char *filena
                max++;
        }
 
-       int addressSpace = max - min;
-       assert(addressSpace >= 2);
+       int address_space = max - min;
+       assert(address_space >= 2);
 
        /* FIXME: What is the reasonable number of buckets?
         * The profiling result will be more accurate if there are enough buckets. */
-       static const uint32_t maxBuckets = 128 * 1024; /* maximum buckets. */
-       uint32_t numBuckets = addressSpace / sizeof(UNIT);
-       if (numBuckets > maxBuckets)
-               numBuckets = maxBuckets;
-       int *buckets = malloc(sizeof(int) * numBuckets);
-       if (buckets == NULL) {
+       static const uint32_t max_buckets = 128 * 1024; /* maximum buckets. */
+       uint32_t num_buckets = address_space / sizeof(UNIT);
+       if (num_buckets > max_buckets)
+               num_buckets = max_buckets;
+       int *buckets = malloc(sizeof(int) * num_buckets);
+       if (!buckets) {
                fclose(f);
                return;
        }
-       memset(buckets, 0, sizeof(int) * numBuckets);
-       for (i = 0; i < sampleNum; i++) {
+       memset(buckets, 0, sizeof(int) * num_buckets);
+       for (i = 0; i < sample_num; i++) {
                uint32_t address = samples[i];
 
                if ((address < min) || (max <= address))
                        continue;
 
                long long a = address - min;
-               long long b = numBuckets;
-               long long c = addressSpace;
+               long long b = num_buckets;
+               long long c = address_space;
                int index_t = (a * b) / c; /* danger!!!! int32 overflows */
                buckets[index_t]++;
        }
 
        /* append binary memory gmon.out &profile_hist_hdr ((char*)&profile_hist_hdr + sizeof(struct gmon_hist_hdr)) */
-       writeLong(f, min, target);                      /* low_pc */
-       writeLong(f, max, target);                      /* high_pc */
-       writeLong(f, numBuckets, target);       /* # of buckets */
-       float sample_rate = sampleNum / (duration_ms / 1000.0);
-       writeLong(f, sample_rate, target);
-       writeString(f, "seconds");
+       write_long(f, min, target);                     /* low_pc */
+       write_long(f, max, target);                     /* high_pc */
+       write_long(f, num_buckets, target);     /* # of buckets */
+       float sample_rate = sample_num / (duration_ms / 1000.0);
+       write_long(f, sample_rate, target);
+       write_string(f, "seconds");
        for (i = 0; i < (15-strlen("seconds")); i++)
-               writeData(f, &zero, 1);
-       writeString(f, "s");
+               write_data(f, &zero, 1);
+       write_string(f, "s");
 
        /*append binary memory gmon.out profile_hist_data (profile_hist_data + profile_hist_hdr.hist_size) */
 
-       char *data = malloc(2 * numBuckets);
-       if (data != NULL) {
-               for (i = 0; i < numBuckets; i++) {
+       char *data = malloc(2 * num_buckets);
+       if (data) {
+               for (i = 0; i < num_buckets; i++) {
                        int val;
                        val = buckets[i];
                        if (val > 65535)
@@ -4274,7 +4314,7 @@ static void write_gmon(uint32_t *samples, uint32_t sampleNum, const char *filena
                        data[i * 2 + 1] = (val >> 8) & 0xff;
                }
                free(buckets);
-               writeData(f, data, numBuckets * 2);
+               write_data(f, data, num_buckets * 2);
                free(data);
        } else
                free(buckets);
@@ -4300,7 +4340,7 @@ COMMAND_HANDLER(handle_profile_command)
        COMMAND_PARSE_NUMBER(u32, CMD_ARGV[0], offset);
 
        uint32_t *samples = malloc(sizeof(uint32_t) * MAX_PROFILE_SAMPLE_NUM);
-       if (samples == NULL) {
+       if (!samples) {
                LOG_ERROR("No memory to store samples.");
                return ERROR_FAIL;
        }
@@ -4368,113 +4408,97 @@ COMMAND_HANDLER(handle_profile_command)
        return retval;
 }
 
-static int new_int_array_element(Jim_Interp *interp, const char *varname, int idx, uint32_t val)
+static int new_u64_array_element(Jim_Interp *interp, const char *varname, int idx, uint64_t val)
 {
        char *namebuf;
-       Jim_Obj *nameObjPtr, *valObjPtr;
+       Jim_Obj *obj_name, *obj_val;
        int result;
 
        namebuf = alloc_printf("%s(%d)", varname, idx);
        if (!namebuf)
                return JIM_ERR;
 
-       nameObjPtr = Jim_NewStringObj(interp, namebuf, -1);
-       valObjPtr = Jim_NewIntObj(interp, val);
-       if (!nameObjPtr || !valObjPtr) {
+       obj_name = Jim_NewStringObj(interp, namebuf, -1);
+       jim_wide wide_val = val;
+       obj_val = Jim_NewWideObj(interp, wide_val);
+       if (!obj_name || !obj_val) {
                free(namebuf);
                return JIM_ERR;
        }
 
-       Jim_IncrRefCount(nameObjPtr);
-       Jim_IncrRefCount(valObjPtr);
-       result = Jim_SetVariable(interp, nameObjPtr, valObjPtr);
-       Jim_DecrRefCount(interp, nameObjPtr);
-       Jim_DecrRefCount(interp, valObjPtr);
+       Jim_IncrRefCount(obj_name);
+       Jim_IncrRefCount(obj_val);
+       result = Jim_SetVariable(interp, obj_name, obj_val);
+       Jim_DecrRefCount(interp, obj_name);
+       Jim_DecrRefCount(interp, obj_val);
        free(namebuf);
        /* printf("%s(%d) <= 0%08x\n", varname, idx, val); */
        return result;
 }
 
-static int jim_mem2array(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
-{
-       struct command_context *context;
-       struct target *target;
-
-       context = current_command_context(interp);
-       assert(context != NULL);
-
-       target = get_current_target(context);
-       if (target == NULL) {
-               LOG_ERROR("mem2array: no current target");
-               return JIM_ERR;
-       }
-
-       return target_mem2array(interp, target, argc - 1, argv + 1);
-}
-
 static int target_mem2array(Jim_Interp *interp, struct target *target, int argc, Jim_Obj *const *argv)
 {
-       long l;
-       uint32_t width;
-       int len;
-       uint32_t addr;
-       uint32_t count;
-       uint32_t v;
-       const char *varname;
-       const char *phys;
-       bool is_phys;
-       int  n, e, retval;
-       uint32_t i;
+       int e;
 
-       /* argv[1] = name of array to receive the data
-        * argv[2] = desired width
-        * argv[3] = memory address
-        * argv[4] = count of times to read
-        */
+       LOG_WARNING("DEPRECATED! use 'read_memory' not 'mem2array'");
 
+       /* argv[0] = name of array to receive the data
+        * argv[1] = desired element width in bits
+        * argv[2] = memory address
+        * argv[3] = count of times to read
+        * argv[4] = optional "phys"
+        */
        if (argc < 4 || argc > 5) {
                Jim_WrongNumArgs(interp, 0, argv, "varname width addr nelems [phys]");
                return JIM_ERR;
        }
-       varname = Jim_GetString(argv[0], &len);
-       /* given "foo" get space for worse case "foo(%d)" .. add 20 */
 
+       /* Arg 0: Name of the array variable */
+       const char *varname = Jim_GetString(argv[0], NULL);
+
+       /* Arg 1: Bit width of one element */
+       long l;
        e = Jim_GetLong(interp, argv[1], &l);
-       width = l;
        if (e != JIM_OK)
                return e;
+       const unsigned int width_bits = l;
 
-       e = Jim_GetLong(interp, argv[2], &l);
-       addr = l;
+       if (width_bits != 8 &&
+                       width_bits != 16 &&
+                       width_bits != 32 &&
+                       width_bits != 64) {
+               Jim_SetResult(interp, Jim_NewEmptyStringObj(interp));
+               Jim_AppendStrings(interp, Jim_GetResult(interp),
+                               "Invalid width param. Must be one of: 8, 16, 32 or 64.", NULL);
+               return JIM_ERR;
+       }
+       const unsigned int width = width_bits / 8;
+
+       /* Arg 2: Memory address */
+       jim_wide wide_addr;
+       e = Jim_GetWide(interp, argv[2], &wide_addr);
        if (e != JIM_OK)
                return e;
+       target_addr_t addr = (target_addr_t)wide_addr;
+
+       /* Arg 3: Number of elements to read */
        e = Jim_GetLong(interp, argv[3], &l);
-       len = l;
        if (e != JIM_OK)
                return e;
-       is_phys = false;
+       size_t len = l;
+
+       /* Arg 4: phys */
+       bool is_phys = false;
        if (argc > 4) {
-               phys = Jim_GetString(argv[4], &n);
-               if (!strncmp(phys, "phys", n))
+               int str_len = 0;
+               const char *phys = Jim_GetString(argv[4], &str_len);
+               if (!strncmp(phys, "phys", str_len))
                        is_phys = true;
                else
                        return JIM_ERR;
        }
-       switch (width) {
-               case 8:
-                       width = 1;
-                       break;
-               case 16:
-                       width = 2;
-                       break;
-               case 32:
-                       width = 4;
-                       break;
-               default:
-                       Jim_SetResult(interp, Jim_NewEmptyStringObj(interp));
-                       Jim_AppendStrings(interp, Jim_GetResult(interp), "Invalid width param, must be 8/16/32", NULL);
-                       return JIM_ERR;
-       }
+
+       /* Argument checks */
        if (len == 0) {
                Jim_SetResult(interp, Jim_NewEmptyStringObj(interp));
                Jim_AppendStrings(interp, Jim_GetResult(interp), "mem2array: zero width read?", NULL);
@@ -4485,21 +4509,22 @@ static int target_mem2array(Jim_Interp *interp, struct target *target, int argc,
                Jim_AppendStrings(interp, Jim_GetResult(interp), "mem2array: addr + len - wraps to zero?", NULL);
                return JIM_ERR;
        }
-       /* absurd transfer size? */
        if (len > 65536) {
                Jim_SetResult(interp, Jim_NewEmptyStringObj(interp));
-               Jim_AppendStrings(interp, Jim_GetResult(interp), "mem2array: absurd > 64K item request", NULL);
+               Jim_AppendStrings(interp, Jim_GetResult(interp),
+                               "mem2array: too large read request, exceeds 64K items", NULL);
                return JIM_ERR;
        }
 
        if ((width == 1) ||
                ((width == 2) && ((addr & 1) == 0)) ||
-               ((width == 4) && ((addr & 3) == 0))) {
-               /* all is well */
+               ((width == 4) && ((addr & 3) == 0)) ||
+               ((width == 8) && ((addr & 7) == 0))) {
+               /* alignment correct */
        } else {
                char buf[100];
                Jim_SetResult(interp, Jim_NewEmptyStringObj(interp));
-               sprintf(buf, "mem2array address: 0x%08" PRIx32 " is not aligned for %" PRIu32 " byte reads",
+               sprintf(buf, "mem2array address: " TARGET_ADDR_FMT " is not aligned for %" PRIu32 " byte reads",
                                addr,
                                width);
                Jim_AppendStrings(interp, Jim_GetResult(interp), buf, NULL);
@@ -4509,40 +4534,42 @@ static int target_mem2array(Jim_Interp *interp, struct target *target, int argc,
        /* Transfer loop */
 
        /* index counter */
-       n = 0;
+       size_t idx = 0;
 
-       size_t buffersize = 4096;
+       const size_t buffersize = 4096;
        uint8_t *buffer = malloc(buffersize);
-       if (buffer == NULL)
+       if (!buffer)
                return JIM_ERR;
 
        /* assume ok */
        e = JIM_OK;
        while (len) {
                /* Slurp... in buffer size chunks */
+               const unsigned int max_chunk_len = buffersize / width;
+               const size_t chunk_len = MIN(len, max_chunk_len); /* in elements.. */
 
-               count = len; /* in objects.. */
-               if (count > (buffersize / width))
-                       count = (buffersize / width);
-
+               int retval;
                if (is_phys)
-                       retval = target_read_phys_memory(target, addr, width, count, buffer);
+                       retval = target_read_phys_memory(target, addr, width, chunk_len, buffer);
                else
-                       retval = target_read_memory(target, addr, width, count, buffer);
+                       retval = target_read_memory(target, addr, width, chunk_len, buffer);
                if (retval != ERROR_OK) {
                        /* BOO !*/
-                       LOG_ERROR("mem2array: Read @ 0x%08" PRIx32 ", w=%" PRIu32 ", cnt=%" PRIu32 ", failed",
+                       LOG_ERROR("mem2array: Read @ " TARGET_ADDR_FMT ", w=%u, cnt=%zu, failed",
                                          addr,
                                          width,
-                                         count);
+                                         chunk_len);
                        Jim_SetResult(interp, Jim_NewEmptyStringObj(interp));
                        Jim_AppendStrings(interp, Jim_GetResult(interp), "mem2array: cannot read memory", NULL);
                        e = JIM_ERR;
                        break;
                } else {
-                       v = 0; /* shut up gcc */
-                       for (i = 0; i < count ; i++, n++) {
+                       for (size_t i = 0; i < chunk_len ; i++, idx++) {
+                               uint64_t v = 0;
                                switch (width) {
+                                       case 8:
+                                               v = target_buffer_get_u64(target, &buffer[i*width]);
+                                               break;
                                        case 4:
                                                v = target_buffer_get_u32(target, &buffer[i*width]);
                                                break;
@@ -4553,10 +4580,10 @@ static int target_mem2array(Jim_Interp *interp, struct target *target, int argc,
                                                v = buffer[i] & 0x0ff;
                                                break;
                                }
-                               new_int_array_element(interp, varname, n, v);
+                               new_u64_array_element(interp, varname, idx, v);
                        }
-                       len -= count;
-                       addr += count * width;
+                       len -= chunk_len;
+                       addr += chunk_len * width;
                }
        }
 
@@ -4567,145 +4594,280 @@ static int target_mem2array(Jim_Interp *interp, struct target *target, int argc,
        return e;
 }
 
-static int get_int_array_element(Jim_Interp *interp, const char *varname, int idx, uint32_t *val)
+static int target_jim_read_memory(Jim_Interp *interp, int argc,
+               Jim_Obj * const *argv)
 {
-       char *namebuf;
-       Jim_Obj *nameObjPtr, *valObjPtr;
-       int result;
+       /*
+        * argv[1] = memory address
+        * argv[2] = desired element width in bits
+        * argv[3] = number of elements to read
+        * argv[4] = optional "phys"
+        */
+
+       if (argc < 4 || argc > 5) {
+               Jim_WrongNumArgs(interp, 1, argv, "address width count ['phys']");
+               return JIM_ERR;
+       }
+
+       /* Arg 1: Memory address. */
+       jim_wide wide_addr;
+       int e;
+       e = Jim_GetWide(interp, argv[1], &wide_addr);
+
+       if (e != JIM_OK)
+               return e;
+
+       target_addr_t addr = (target_addr_t)wide_addr;
+
+       /* Arg 2: Bit width of one element. */
        long l;
+       e = Jim_GetLong(interp, argv[2], &l);
 
-       namebuf = alloc_printf("%s(%d)", varname, idx);
-       if (!namebuf)
+       if (e != JIM_OK)
+               return e;
+
+       const unsigned int width_bits = l;
+
+       /* Arg 3: Number of elements to read. */
+       e = Jim_GetLong(interp, argv[3], &l);
+
+       if (e != JIM_OK)
+               return e;
+
+       size_t count = l;
+
+       /* Arg 4: Optional 'phys'. */
+       bool is_phys = false;
+
+       if (argc > 4) {
+               const char *phys = Jim_GetString(argv[4], NULL);
+
+               if (strcmp(phys, "phys")) {
+                       Jim_SetResultFormatted(interp, "invalid argument '%s', must be 'phys'", phys);
+                       return JIM_ERR;
+               }
+
+               is_phys = true;
+       }
+
+       switch (width_bits) {
+       case 8:
+       case 16:
+       case 32:
+       case 64:
+               break;
+       default:
+               Jim_SetResultString(interp, "invalid width, must be 8, 16, 32 or 64", -1);
                return JIM_ERR;
+       }
 
-       nameObjPtr = Jim_NewStringObj(interp, namebuf, -1);
-       if (!nameObjPtr) {
-               free(namebuf);
+       const unsigned int width = width_bits / 8;
+
+       if ((addr + (count * width)) < addr) {
+               Jim_SetResultString(interp, "read_memory: addr + count wraps to zero", -1);
                return JIM_ERR;
        }
 
-       Jim_IncrRefCount(nameObjPtr);
-       valObjPtr = Jim_GetVariable(interp, nameObjPtr, JIM_ERRMSG);
-       Jim_DecrRefCount(interp, nameObjPtr);
-       free(namebuf);
-       if (valObjPtr == NULL)
+       if (count > 65536) {
+               Jim_SetResultString(interp, "read_memory: too large read request, exeeds 64K elements", -1);
                return JIM_ERR;
+       }
 
-       result = Jim_GetLong(interp, valObjPtr, &l);
-       /* printf("%s(%d) => 0%08x\n", varname, idx, val); */
-       *val = l;
-       return result;
+       struct command_context *cmd_ctx = current_command_context(interp);
+       assert(cmd_ctx != NULL);
+       struct target *target = get_current_target(cmd_ctx);
+
+       const size_t buffersize = 4096;
+       uint8_t *buffer = malloc(buffersize);
+
+       if (!buffer) {
+               LOG_ERROR("Failed to allocate memory");
+               return JIM_ERR;
+       }
+
+       Jim_Obj *result_list = Jim_NewListObj(interp, NULL, 0);
+       Jim_IncrRefCount(result_list);
+
+       while (count > 0) {
+               const unsigned int max_chunk_len = buffersize / width;
+               const size_t chunk_len = MIN(count, max_chunk_len);
+
+               int retval;
+
+               if (is_phys)
+                       retval = target_read_phys_memory(target, addr, width, chunk_len, buffer);
+               else
+                       retval = target_read_memory(target, addr, width, chunk_len, buffer);
+
+               if (retval != ERROR_OK) {
+                       LOG_ERROR("read_memory: read at " TARGET_ADDR_FMT " with width=%u and count=%zu failed",
+                               addr, width_bits, chunk_len);
+                       Jim_SetResultString(interp, "read_memory: failed to read memory", -1);
+                       e = JIM_ERR;
+                       break;
+               }
+
+               for (size_t i = 0; i < chunk_len ; i++) {
+                       uint64_t v = 0;
+
+                       switch (width) {
+                       case 8:
+                               v = target_buffer_get_u64(target, &buffer[i * width]);
+                               break;
+                       case 4:
+                               v = target_buffer_get_u32(target, &buffer[i * width]);
+                               break;
+                       case 2:
+                               v = target_buffer_get_u16(target, &buffer[i * width]);
+                               break;
+                       case 1:
+                               v = buffer[i];
+                               break;
+                       }
+
+                       char value_buf[11];
+                       snprintf(value_buf, sizeof(value_buf), "0x%" PRIx64, v);
+
+                       Jim_ListAppendElement(interp, result_list,
+                               Jim_NewStringObj(interp, value_buf, -1));
+               }
+
+               count -= chunk_len;
+               addr += chunk_len * width;
+       }
+
+       free(buffer);
+
+       if (e != JIM_OK) {
+               Jim_DecrRefCount(interp, result_list);
+               return e;
+       }
+
+       Jim_SetResult(interp, result_list);
+       Jim_DecrRefCount(interp, result_list);
+
+       return JIM_OK;
 }
 
-static int jim_array2mem(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
+static int get_u64_array_element(Jim_Interp *interp, const char *varname, size_t idx, uint64_t *val)
 {
-       struct command_context *context;
-       struct target *target;
-
-       context = current_command_context(interp);
-       assert(context != NULL);
+       char *namebuf = alloc_printf("%s(%zu)", varname, idx);
+       if (!namebuf)
+               return JIM_ERR;
 
-       target = get_current_target(context);
-       if (target == NULL) {
-               LOG_ERROR("array2mem: no current target");
+       Jim_Obj *obj_name = Jim_NewStringObj(interp, namebuf, -1);
+       if (!obj_name) {
+               free(namebuf);
                return JIM_ERR;
        }
 
-       return target_array2mem(interp, target, argc-1, argv + 1);
+       Jim_IncrRefCount(obj_name);
+       Jim_Obj *obj_val = Jim_GetVariable(interp, obj_name, JIM_ERRMSG);
+       Jim_DecrRefCount(interp, obj_name);
+       free(namebuf);
+       if (!obj_val)
+               return JIM_ERR;
+
+       jim_wide wide_val;
+       int result = Jim_GetWide(interp, obj_val, &wide_val);
+       *val = wide_val;
+       return result;
 }
 
 static int target_array2mem(Jim_Interp *interp, struct target *target,
                int argc, Jim_Obj *const *argv)
 {
-       long l;
-       uint32_t width;
-       int len;
-       uint32_t addr;
-       uint32_t count;
-       uint32_t v;
-       const char *varname;
-       const char *phys;
-       bool is_phys;
-       int  n, e, retval;
-       uint32_t i;
+       int e;
+
+       LOG_WARNING("DEPRECATED! use 'write_memory' not 'array2mem'");
 
-       /* argv[1] = name of array to get the data
-        * argv[2] = desired width
-        * argv[3] = memory address
-        * argv[4] = count to write
+       /* argv[0] = name of array from which to read the data
+        * argv[1] = desired element width in bits
+        * argv[2] = memory address
+        * argv[3] = number of elements to write
+        * argv[4] = optional "phys"
         */
        if (argc < 4 || argc > 5) {
                Jim_WrongNumArgs(interp, 0, argv, "varname width addr nelems [phys]");
                return JIM_ERR;
        }
-       varname = Jim_GetString(argv[0], &len);
-       /* given "foo" get space for worse case "foo(%d)" .. add 20 */
 
+       /* Arg 0: Name of the array variable */
+       const char *varname = Jim_GetString(argv[0], NULL);
+
+       /* Arg 1: Bit width of one element */
+       long l;
        e = Jim_GetLong(interp, argv[1], &l);
-       width = l;
        if (e != JIM_OK)
                return e;
+       const unsigned int width_bits = l;
 
-       e = Jim_GetLong(interp, argv[2], &l);
-       addr = l;
+       if (width_bits != 8 &&
+                       width_bits != 16 &&
+                       width_bits != 32 &&
+                       width_bits != 64) {
+               Jim_SetResult(interp, Jim_NewEmptyStringObj(interp));
+               Jim_AppendStrings(interp, Jim_GetResult(interp),
+                               "Invalid width param. Must be one of: 8, 16, 32 or 64.", NULL);
+               return JIM_ERR;
+       }
+       const unsigned int width = width_bits / 8;
+
+       /* Arg 2: Memory address */
+       jim_wide wide_addr;
+       e = Jim_GetWide(interp, argv[2], &wide_addr);
        if (e != JIM_OK)
                return e;
+       target_addr_t addr = (target_addr_t)wide_addr;
+
+       /* Arg 3: Number of elements to write */
        e = Jim_GetLong(interp, argv[3], &l);
-       len = l;
        if (e != JIM_OK)
                return e;
-       is_phys = false;
+       size_t len = l;
+
+       /* Arg 4: Phys */
+       bool is_phys = false;
        if (argc > 4) {
-               phys = Jim_GetString(argv[4], &n);
-               if (!strncmp(phys, "phys", n))
+               int str_len = 0;
+               const char *phys = Jim_GetString(argv[4], &str_len);
+               if (!strncmp(phys, "phys", str_len))
                        is_phys = true;
                else
                        return JIM_ERR;
        }
-       switch (width) {
-               case 8:
-                       width = 1;
-                       break;
-               case 16:
-                       width = 2;
-                       break;
-               case 32:
-                       width = 4;
-                       break;
-               default:
-                       Jim_SetResult(interp, Jim_NewEmptyStringObj(interp));
-                       Jim_AppendStrings(interp, Jim_GetResult(interp),
-                                       "Invalid width param, must be 8/16/32", NULL);
-                       return JIM_ERR;
-       }
+
+       /* Argument checks */
        if (len == 0) {
                Jim_SetResult(interp, Jim_NewEmptyStringObj(interp));
                Jim_AppendStrings(interp, Jim_GetResult(interp),
                                "array2mem: zero width read?", NULL);
                return JIM_ERR;
        }
+
        if ((addr + (len * width)) < addr) {
                Jim_SetResult(interp, Jim_NewEmptyStringObj(interp));
                Jim_AppendStrings(interp, Jim_GetResult(interp),
                                "array2mem: addr + len - wraps to zero?", NULL);
                return JIM_ERR;
        }
-       /* absurd transfer size? */
+
        if (len > 65536) {
                Jim_SetResult(interp, Jim_NewEmptyStringObj(interp));
                Jim_AppendStrings(interp, Jim_GetResult(interp),
-                               "array2mem: absurd > 64K item request", NULL);
+                               "array2mem: too large memory write request, exceeds 64K items", NULL);
                return JIM_ERR;
        }
 
        if ((width == 1) ||
                ((width == 2) && ((addr & 1) == 0)) ||
-               ((width == 4) && ((addr & 3) == 0))) {
-               /* all is well */
+               ((width == 4) && ((addr & 3) == 0)) ||
+               ((width == 8) && ((addr & 7) == 0))) {
+               /* alignment correct */
        } else {
                char buf[100];
                Jim_SetResult(interp, Jim_NewEmptyStringObj(interp));
-               sprintf(buf, "array2mem address: 0x%08" PRIx32 " is not aligned for %" PRIu32 " byte reads",
+               sprintf(buf, "array2mem address: " TARGET_ADDR_FMT " is not aligned for %" PRIu32 " byte reads",
                                addr,
                                width);
                Jim_AppendStrings(interp, Jim_GetResult(interp), buf, NULL);
@@ -4714,27 +4876,34 @@ static int target_array2mem(Jim_Interp *interp, struct target *target,
 
        /* Transfer loop */
 
-       /* index counter */
-       n = 0;
        /* assume ok */
        e = JIM_OK;
 
-       size_t buffersize = 4096;
+       const size_t buffersize = 4096;
        uint8_t *buffer = malloc(buffersize);
-       if (buffer == NULL)
+       if (!buffer)
                return JIM_ERR;
 
+       /* index counter */
+       size_t idx = 0;
+
        while (len) {
                /* Slurp... in buffer size chunks */
+               const unsigned int max_chunk_len = buffersize / width;
 
-               count = len; /* in objects.. */
-               if (count > (buffersize / width))
-                       count = (buffersize / width);
+               const size_t chunk_len = MIN(len, max_chunk_len); /* in elements.. */
 
-               v = 0; /* shut up gcc */
-               for (i = 0; i < count; i++, n++) {
-                       get_int_array_element(interp, varname, n, &v);
+               /* Fill the buffer */
+               for (size_t i = 0; i < chunk_len; i++, idx++) {
+                       uint64_t v = 0;
+                       if (get_u64_array_element(interp, varname, idx, &v) != JIM_OK) {
+                               free(buffer);
+                               return JIM_ERR;
+                       }
                        switch (width) {
+                       case 8:
+                               target_buffer_set_u64(target, &buffer[i * width], v);
+                               break;
                        case 4:
                                target_buffer_set_u32(target, &buffer[i * width], v);
                                break;
@@ -4746,24 +4915,26 @@ static int target_array2mem(Jim_Interp *interp, struct target *target,
                                break;
                        }
                }
-               len -= count;
+               len -= chunk_len;
 
+               /* Write the buffer to memory */
+               int retval;
                if (is_phys)
-                       retval = target_write_phys_memory(target, addr, width, count, buffer);
+                       retval = target_write_phys_memory(target, addr, width, chunk_len, buffer);
                else
-                       retval = target_write_memory(target, addr, width, count, buffer);
+                       retval = target_write_memory(target, addr, width, chunk_len, buffer);
                if (retval != ERROR_OK) {
                        /* BOO !*/
-                       LOG_ERROR("array2mem: Write @ 0x%08" PRIx32 ", w=%" PRIu32 ", cnt=%" PRIu32 ", failed",
+                       LOG_ERROR("array2mem: Write @ " TARGET_ADDR_FMT ", w=%u, cnt=%zu, failed",
                                          addr,
                                          width,
-                                         count);
+                                         chunk_len);
                        Jim_SetResult(interp, Jim_NewEmptyStringObj(interp));
                        Jim_AppendStrings(interp, Jim_GetResult(interp), "array2mem: cannot read memory", NULL);
                        e = JIM_ERR;
                        break;
                }
-               addr += count * width;
+               addr += chunk_len * width;
        }
 
        free(buffer);
@@ -4773,6 +4944,144 @@ static int target_array2mem(Jim_Interp *interp, struct target *target,
        return e;
 }
 
+static int target_jim_write_memory(Jim_Interp *interp, int argc,
+               Jim_Obj * const *argv)
+{
+       /*
+        * argv[1] = memory address
+        * argv[2] = desired element width in bits
+        * argv[3] = list of data to write
+        * argv[4] = optional "phys"
+        */
+
+       if (argc < 4 || argc > 5) {
+               Jim_WrongNumArgs(interp, 1, argv, "address width data ['phys']");
+               return JIM_ERR;
+       }
+
+       /* Arg 1: Memory address. */
+       int e;
+       jim_wide wide_addr;
+       e = Jim_GetWide(interp, argv[1], &wide_addr);
+
+       if (e != JIM_OK)
+               return e;
+
+       target_addr_t addr = (target_addr_t)wide_addr;
+
+       /* Arg 2: Bit width of one element. */
+       long l;
+       e = Jim_GetLong(interp, argv[2], &l);
+
+       if (e != JIM_OK)
+               return e;
+
+       const unsigned int width_bits = l;
+       size_t count = Jim_ListLength(interp, argv[3]);
+
+       /* Arg 4: Optional 'phys'. */
+       bool is_phys = false;
+
+       if (argc > 4) {
+               const char *phys = Jim_GetString(argv[4], NULL);
+
+               if (strcmp(phys, "phys")) {
+                       Jim_SetResultFormatted(interp, "invalid argument '%s', must be 'phys'", phys);
+                       return JIM_ERR;
+               }
+
+               is_phys = true;
+       }
+
+       switch (width_bits) {
+       case 8:
+       case 16:
+       case 32:
+       case 64:
+               break;
+       default:
+               Jim_SetResultString(interp, "invalid width, must be 8, 16, 32 or 64", -1);
+               return JIM_ERR;
+       }
+
+       const unsigned int width = width_bits / 8;
+
+       if ((addr + (count * width)) < addr) {
+               Jim_SetResultString(interp, "write_memory: addr + len wraps to zero", -1);
+               return JIM_ERR;
+       }
+
+       if (count > 65536) {
+               Jim_SetResultString(interp, "write_memory: too large memory write request, exceeds 64K elements", -1);
+               return JIM_ERR;
+       }
+
+       struct command_context *cmd_ctx = current_command_context(interp);
+       assert(cmd_ctx != NULL);
+       struct target *target = get_current_target(cmd_ctx);
+
+       const size_t buffersize = 4096;
+       uint8_t *buffer = malloc(buffersize);
+
+       if (!buffer) {
+               LOG_ERROR("Failed to allocate memory");
+               return JIM_ERR;
+       }
+
+       size_t j = 0;
+
+       while (count > 0) {
+               const unsigned int max_chunk_len = buffersize / width;
+               const size_t chunk_len = MIN(count, max_chunk_len);
+
+               for (size_t i = 0; i < chunk_len; i++, j++) {
+                       Jim_Obj *tmp = Jim_ListGetIndex(interp, argv[3], j);
+                       jim_wide element_wide;
+                       Jim_GetWide(interp, tmp, &element_wide);
+
+                       const uint64_t v = element_wide;
+
+                       switch (width) {
+                       case 8:
+                               target_buffer_set_u64(target, &buffer[i * width], v);
+                               break;
+                       case 4:
+                               target_buffer_set_u32(target, &buffer[i * width], v);
+                               break;
+                       case 2:
+                               target_buffer_set_u16(target, &buffer[i * width], v);
+                               break;
+                       case 1:
+                               buffer[i] = v & 0x0ff;
+                               break;
+                       }
+               }
+
+               count -= chunk_len;
+
+               int retval;
+
+               if (is_phys)
+                       retval = target_write_phys_memory(target, addr, width, chunk_len, buffer);
+               else
+                       retval = target_write_memory(target, addr, width, chunk_len, buffer);
+
+               if (retval != ERROR_OK) {
+                       LOG_ERROR("write_memory: write at " TARGET_ADDR_FMT " with width=%u and count=%zu failed",
+                               addr,  width_bits, chunk_len);
+                       Jim_SetResultString(interp, "write_memory: failed to write memory", -1);
+                       e = JIM_ERR;
+                       break;
+               }
+
+               addr += chunk_len * width;
+       }
+
+       free(buffer);
+
+       return e;
+}
+
 /* FIX? should we propagate errors here rather than printing them
  * and continuing?
  */
@@ -4781,14 +5090,14 @@ void target_handle_event(struct target *target, enum target_event e)
        struct target_event_action *teap;
        int retval;
 
-       for (teap = target->event_action; teap != NULL; teap = teap->next) {
+       for (teap = target->event_action; teap; teap = teap->next) {
                if (teap->event == e) {
                        LOG_DEBUG("target(%d): %s (%s) event: %d (%s) action: %s",
                                           target->target_number,
                                           target_name(target),
                                           target_type_name(target),
                                           e,
-                                          jim_nvp_value2name_simple(nvp_target_event, e)->name,
+                                          target_event_name(e),
                                           Jim_GetString(teap->body, NULL));
 
                        /* Override current target by the target an event
@@ -4812,7 +5121,7 @@ void target_handle_event(struct target *target, enum target_event e)
                        if (retval != JIM_OK) {
                                Jim_MakeErrorMessage(teap->interp);
                                LOG_USER("Error executing event %s on target %s:\n%s",
-                                                 jim_nvp_value2name_simple(nvp_target_event, e)->name,
+                                                 target_event_name(e),
                                                  target_name(target),
                                                  Jim_GetString(Jim_GetResult(teap->interp), NULL));
                                /* clean both error code and stacktrace before return */
@@ -4822,6 +5131,152 @@ void target_handle_event(struct target *target, enum target_event e)
        }
 }
 
+static int target_jim_get_reg(Jim_Interp *interp, int argc,
+               Jim_Obj * const *argv)
+{
+       bool force = false;
+
+       if (argc == 3) {
+               const char *option = Jim_GetString(argv[1], NULL);
+
+               if (!strcmp(option, "-force")) {
+                       argc--;
+                       argv++;
+                       force = true;
+               } else {
+                       Jim_SetResultFormatted(interp, "invalid option '%s'", option);
+                       return JIM_ERR;
+               }
+       }
+
+       if (argc != 2) {
+               Jim_WrongNumArgs(interp, 1, argv, "[-force] list");
+               return JIM_ERR;
+       }
+
+       const int length = Jim_ListLength(interp, argv[1]);
+
+       Jim_Obj *result_dict = Jim_NewDictObj(interp, NULL, 0);
+
+       if (!result_dict)
+               return JIM_ERR;
+
+       struct command_context *cmd_ctx = current_command_context(interp);
+       assert(cmd_ctx != NULL);
+       const struct target *target = get_current_target(cmd_ctx);
+
+       for (int i = 0; i < length; i++) {
+               Jim_Obj *elem = Jim_ListGetIndex(interp, argv[1], i);
+
+               if (!elem)
+                       return JIM_ERR;
+
+               const char *reg_name = Jim_String(elem);
+
+               struct reg *reg = register_get_by_name(target->reg_cache, reg_name,
+                       false);
+
+               if (!reg || !reg->exist) {
+                       Jim_SetResultFormatted(interp, "unknown register '%s'", reg_name);
+                       return JIM_ERR;
+               }
+
+               if (force) {
+                       int retval = reg->type->get(reg);
+
+                       if (retval != ERROR_OK) {
+                               Jim_SetResultFormatted(interp, "failed to read register '%s'",
+                                       reg_name);
+                               return JIM_ERR;
+                       }
+               }
+
+               char *reg_value = buf_to_hex_str(reg->value, reg->size);
+
+               if (!reg_value) {
+                       LOG_ERROR("Failed to allocate memory");
+                       return JIM_ERR;
+               }
+
+               char *tmp = alloc_printf("0x%s", reg_value);
+
+               free(reg_value);
+
+               if (!tmp) {
+                       LOG_ERROR("Failed to allocate memory");
+                       return JIM_ERR;
+               }
+
+               Jim_DictAddElement(interp, result_dict, elem,
+                       Jim_NewStringObj(interp, tmp, -1));
+
+               free(tmp);
+       }
+
+       Jim_SetResult(interp, result_dict);
+
+       return JIM_OK;
+}
+
+static int target_jim_set_reg(Jim_Interp *interp, int argc,
+               Jim_Obj * const *argv)
+{
+       if (argc != 2) {
+               Jim_WrongNumArgs(interp, 1, argv, "dict");
+               return JIM_ERR;
+       }
+
+       int tmp;
+#if JIM_VERSION >= 80
+       Jim_Obj **dict = Jim_DictPairs(interp, argv[1], &tmp);
+
+       if (!dict)
+               return JIM_ERR;
+#else
+       Jim_Obj **dict;
+       int ret = Jim_DictPairs(interp, argv[1], &dict, &tmp);
+
+       if (ret != JIM_OK)
+               return ret;
+#endif
+
+       const unsigned int length = tmp;
+       struct command_context *cmd_ctx = current_command_context(interp);
+       assert(cmd_ctx);
+       const struct target *target = get_current_target(cmd_ctx);
+
+       for (unsigned int i = 0; i < length; i += 2) {
+               const char *reg_name = Jim_String(dict[i]);
+               const char *reg_value = Jim_String(dict[i + 1]);
+               struct reg *reg = register_get_by_name(target->reg_cache, reg_name,
+                       false);
+
+               if (!reg || !reg->exist) {
+                       Jim_SetResultFormatted(interp, "unknown register '%s'", reg_name);
+                       return JIM_ERR;
+               }
+
+               uint8_t *buf = malloc(DIV_ROUND_UP(reg->size, 8));
+
+               if (!buf) {
+                       LOG_ERROR("Failed to allocate memory");
+                       return JIM_ERR;
+               }
+
+               str_to_buf(reg_value, strlen(reg_value), buf, reg->size, 0);
+               int retval = reg->type->set(reg, buf);
+               free(buf);
+
+               if (retval != ERROR_OK) {
+                       Jim_SetResultFormatted(interp, "failed to set '%s' to register '%s'",
+                               reg_value, reg_name);
+                       return JIM_ERR;
+               }
+       }
+
+       return JIM_OK;
+}
+
 /**
  * Returns true only if the target has a handler for the specified event.
  */
@@ -4829,7 +5284,7 @@ bool target_has_event_action(struct target *target, enum target_event event)
 {
        struct target_event_action *teap;
 
-       for (teap = target->event_action; teap != NULL; teap = teap->next) {
+       for (teap = target->event_action; teap; teap = teap->next) {
                if (teap->event == event)
                        return true;
        }
@@ -4960,11 +5415,11 @@ no_params:
                                if (goi->isconfigure) {
                                        /* START_DEPRECATED_TPIU */
                                        if (n->value == TARGET_EVENT_TRACE_CONFIG)
-                                               LOG_INFO("DEPRECATED target event %s", n->name);
+                                               LOG_INFO("DEPRECATED target event %s; use TPIU events {pre,post}-{enable,disable}", n->name);
                                        /* END_DEPRECATED_TPIU */
 
                                        bool replace = true;
-                                       if (teap == NULL) {
+                                       if (!teap) {
                                                /* create new */
                                                teap = calloc(1, sizeof(*teap));
                                                replace = false;
@@ -4995,7 +5450,7 @@ no_params:
                                        Jim_SetEmptyResult(goi->interp);
                                } else {
                                        /* get */
-                                       if (teap == NULL)
+                                       if (!teap)
                                                Jim_SetEmptyResult(goi->interp);
                                        else
                                                Jim_SetResult(goi->interp, Jim_DuplicateObj(goi->interp, teap->body));
@@ -5081,7 +5536,7 @@ no_params:
                                        goto no_params;
                        }
                        n = jim_nvp_value2name_simple(nvp_target_endian, target->endianness);
-                       if (n->name == NULL) {
+                       if (!n->name) {
                                target->endianness = TARGET_LITTLE_ENDIAN;
                                n = jim_nvp_value2name_simple(nvp_target_endian, target->endianness);
                        }
@@ -5119,7 +5574,7 @@ no_params:
                                if (e != JIM_OK)
                                        return e;
                                tap = jtag_tap_by_jim_obj(goi->interp, o_t);
-                               if (tap == NULL)
+                               if (!tap)
                                        return JIM_ERR;
                                target->tap = tap;
                                target->tap_configured = true;
@@ -5285,8 +5740,13 @@ static int jim_target_examine(Jim_Interp *interp, int argc, Jim_Obj *const *argv
        }
 
        int e = target->type->examine(target);
-       if (e != ERROR_OK)
+       if (e != ERROR_OK) {
+               target_reset_examined(target);
                return JIM_ERR;
+       }
+
+       target_set_examined(target);
+
        return JIM_OK;
 }
 
@@ -5446,11 +5906,11 @@ static int jim_target_wait_state(Jim_Interp *interp, int argc, Jim_Obj *const *a
 
        e = target_wait_state(target, n->value, a);
        if (e != ERROR_OK) {
-               Jim_Obj *eObj = Jim_NewIntObj(interp, e);
+               Jim_Obj *obj = Jim_NewIntObj(interp, e);
                Jim_SetResultFormatted(goi.interp,
                                "target: %s wait %s fails (%#s) %s",
                                target_name(target), n->name,
-                               eObj, target_strerror_safe(e));
+                               obj, target_strerror_safe(e));
                return JIM_ERR;
        }
        return JIM_OK;
@@ -5470,9 +5930,9 @@ COMMAND_HANDLER(handle_target_event_list)
        command_print(CMD, "------------------------- | "
                        "----------------------------------------");
        while (teap) {
-               struct jim_nvp *opt = jim_nvp_value2name_simple(nvp_target_event, teap->event);
                command_print(CMD, "%-25s | %s",
-                               opt->name, Jim_GetString(teap->body, NULL));
+                               target_event_name(teap->event),
+                               Jim_GetString(teap->body, NULL));
                teap = teap->next;
        }
        command_print(CMD, "***END***");
@@ -5599,6 +6059,34 @@ static const struct command_registration target_instance_command_handlers[] = {
                        "from target memory",
                .usage = "arrayname bitwidth address count",
        },
+       {
+               .name = "get_reg",
+               .mode = COMMAND_EXEC,
+               .jim_handler = target_jim_get_reg,
+               .help = "Get register values from the target",
+               .usage = "list",
+       },
+       {
+               .name = "set_reg",
+               .mode = COMMAND_EXEC,
+               .jim_handler = target_jim_set_reg,
+               .help = "Set target register values",
+               .usage = "dict",
+       },
+       {
+               .name = "read_memory",
+               .mode = COMMAND_EXEC,
+               .jim_handler = target_jim_read_memory,
+               .help = "Read Tcl list of 8/16/32/64 bit numbers from target memory",
+               .usage = "address width count ['phys']",
+       },
+       {
+               .name = "write_memory",
+               .mode = COMMAND_EXEC,
+               .jim_handler = target_jim_write_memory,
+               .help = "Write Tcl list of 8/16/32/64 bit numbers to target memory",
+               .usage = "address width data ['phys']",
+       },
        {
                .name = "eventlist",
                .handler = handle_target_event_list,
@@ -5682,7 +6170,7 @@ static int target_create(struct jim_getopt_info *goi)
        struct command_context *cmd_ctx;
 
        cmd_ctx = current_command_context(goi->interp);
-       assert(cmd_ctx != NULL);
+       assert(cmd_ctx);
 
        if (goi->argc < 3) {
                Jim_WrongNumArgs(goi->interp, 1, goi->argv, "?name? ?type? ..options...");
@@ -5692,7 +6180,7 @@ static int target_create(struct jim_getopt_info *goi)
        /* COMMAND */
        jim_getopt_obj(goi, &new_cmd);
        /* does this command exist? */
-       cmd = Jim_GetCommand(goi->interp, new_cmd, JIM_ERRMSG);
+       cmd = Jim_GetCommand(goi->interp, new_cmd, JIM_NONE);
        if (cmd) {
                cp = Jim_GetString(new_cmd, NULL);
                Jim_SetResultFormatted(goi->interp, "Command/target: %s Exists", cp);
@@ -5714,12 +6202,12 @@ static int target_create(struct jim_getopt_info *goi)
        }
        /* now does target type exist */
        for (x = 0 ; target_types[x] ; x++) {
-               if (0 == strcmp(cp, target_types[x]->name)) {
+               if (strcmp(cp, target_types[x]->name) == 0) {
                        /* found */
                        break;
                }
        }
-       if (target_types[x] == NULL) {
+       if (!target_types[x]) {
                Jim_SetResultFormatted(goi->interp, "Unknown target type %s, try one of ", cp);
                for (x = 0 ; target_types[x] ; x++) {
                        if (target_types[x + 1]) {
@@ -5744,6 +6232,9 @@ static int target_create(struct jim_getopt_info *goi)
                return JIM_ERR;
        }
 
+       /* set empty smp cluster */
+       target->smp_targets = &empty_smp_targets;
+
        /* set target number */
        target->target_number = new_target_number();
 
@@ -5814,7 +6305,7 @@ static int target_create(struct jim_getopt_info *goi)
                        }
                }
                /* tap must be set after target was configured */
-               if (target->tap == NULL)
+               if (!target->tap)
                        e = JIM_ERR;
        }
 
@@ -5861,7 +6352,7 @@ static int target_create(struct jim_getopt_info *goi)
        /* create the target specific commands */
        if (target->type->commands) {
                e = register_commands(cmd_ctx, NULL, target->type->commands);
-               if (ERROR_OK != e)
+               if (e != ERROR_OK)
                        LOG_ERROR("unable to register '%s' commands", cp);
        }
 
@@ -5912,7 +6403,7 @@ static int jim_target_current(Jim_Interp *interp, int argc, Jim_Obj *const *argv
                return JIM_ERR;
        }
        struct command_context *cmd_ctx = current_command_context(interp);
-       assert(cmd_ctx != NULL);
+       assert(cmd_ctx);
 
        struct target *target = get_current_target_or_null(cmd_ctx);
        if (target)
@@ -5927,7 +6418,7 @@ static int jim_target_types(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
                return JIM_ERR;
        }
        Jim_SetResult(interp, Jim_NewListObj(interp, NULL, 0));
-       for (unsigned x = 0; NULL != target_types[x]; x++) {
+       for (unsigned x = 0; target_types[x]; x++) {
                Jim_ListAppendElement(interp, Jim_GetResult(interp),
                        Jim_NewStringObj(interp, target_types[x]->name, -1));
        }
@@ -5955,10 +6446,9 @@ static int jim_target_smp(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
        int i;
        const char *targetname;
        int retval, len;
-       struct target *target = (struct target *) NULL;
-       struct target_list *head, *curr, *new;
-       curr = (struct target_list *) NULL;
-       head = (struct target_list *) NULL;
+       static int smp_group = 1;
+       struct target *target = NULL;
+       struct target_list *head, *new;
 
        retval = 0;
        LOG_DEBUG("%d", argc);
@@ -5967,6 +6457,13 @@ static int jim_target_smp(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
         * argv[3] ...
         */
 
+       struct list_head *lh = malloc(sizeof(*lh));
+       if (!lh) {
+               LOG_ERROR("Out of memory");
+               return JIM_ERR;
+       }
+       INIT_LIST_HEAD(lh);
+
        for (i = 1; i < argc; i++) {
 
                targetname = Jim_GetString(argv[i], &len);
@@ -5975,28 +6472,19 @@ static int jim_target_smp(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
                if (target) {
                        new = malloc(sizeof(struct target_list));
                        new->target = target;
-                       new->next = (struct target_list *)NULL;
-                       if (head == (struct target_list *)NULL) {
-                               head = new;
-                               curr = head;
-                       } else {
-                               curr->next = new;
-                               curr = new;
-                       }
+                       list_add_tail(&new->lh, lh);
                }
        }
        /*  now parse the list of cpu and put the target in smp mode*/
-       curr = head;
-
-       while (curr != (struct target_list *)NULL) {
-               target = curr->target;
-               target->smp = 1;
-               target->head = head;
-               curr = curr->next;
+       foreach_smp_target(head, lh) {
+               target = head->target;
+               target->smp = smp_group;
+               target->smp_targets = lh;
        }
+       smp_group++;
 
        if (target && target->rtos)
-               retval = rtos_smp_init(head->target);
+               retval = rtos_smp_init(target);
 
        return retval;
 }
@@ -6059,7 +6547,7 @@ static const struct command_registration target_subcommand_handlers[] = {
        COMMAND_REGISTRATION_DONE
 };
 
-struct FastLoad {
+struct fast_load {
        target_addr_t address;
        uint8_t *data;
        int length;
@@ -6067,11 +6555,11 @@ struct FastLoad {
 };
 
 static int fastload_num;
-static struct FastLoad *fastload;
+static struct fast_load *fastload;
 
 static void free_fastload(void)
 {
-       if (fastload != NULL) {
+       if (fastload) {
                for (int i = 0; i < fastload_num; i++)
                        free(fastload[i].data);
                free(fastload);
@@ -6089,9 +6577,9 @@ COMMAND_HANDLER(handle_fast_load_image_command)
 
        struct image image;
 
-       int retval = CALL_COMMAND_HANDLER(parse_load_image_command_CMD_ARGV,
+       int retval = CALL_COMMAND_HANDLER(parse_load_image_command,
                        &image, &min_address, &max_address);
-       if (ERROR_OK != retval)
+       if (retval != ERROR_OK)
                return retval;
 
        struct duration bench;
@@ -6104,16 +6592,16 @@ COMMAND_HANDLER(handle_fast_load_image_command)
        image_size = 0x0;
        retval = ERROR_OK;
        fastload_num = image.num_sections;
-       fastload = malloc(sizeof(struct FastLoad)*image.num_sections);
-       if (fastload == NULL) {
+       fastload = malloc(sizeof(struct fast_load)*image.num_sections);
+       if (!fastload) {
                command_print(CMD, "out of memory");
                image_close(&image);
                return ERROR_FAIL;
        }
-       memset(fastload, 0, sizeof(struct FastLoad)*image.num_sections);
+       memset(fastload, 0, sizeof(struct fast_load)*image.num_sections);
        for (unsigned int i = 0; i < image.num_sections; i++) {
                buffer = malloc(image.sections[i].size);
-               if (buffer == NULL) {
+               if (!buffer) {
                        command_print(CMD, "error allocating buffer for section (%d bytes)",
                                                  (int)(image.sections[i].size));
                        retval = ERROR_FAIL;
@@ -6144,7 +6632,7 @@ COMMAND_HANDLER(handle_fast_load_image_command)
 
                        fastload[i].address = image.sections[i].base_address + offset;
                        fastload[i].data = malloc(length);
-                       if (fastload[i].data == NULL) {
+                       if (!fastload[i].data) {
                                free(buffer);
                                command_print(CMD, "error allocating buffer for section (%" PRIu32 " bytes)",
                                                          length);
@@ -6163,7 +6651,7 @@ COMMAND_HANDLER(handle_fast_load_image_command)
                free(buffer);
        }
 
-       if ((ERROR_OK == retval) && (duration_measure(&bench) == ERROR_OK)) {
+       if ((retval == ERROR_OK) && (duration_measure(&bench) == ERROR_OK)) {
                command_print(CMD, "Loaded %" PRIu32 " bytes "
                                "in %fs (%0.3f KiB/s)", image_size,
                                duration_elapsed(&bench), duration_kbps(&bench, image_size));
@@ -6185,7 +6673,7 @@ COMMAND_HANDLER(handle_fast_load_command)
 {
        if (CMD_ARGC > 0)
                return ERROR_COMMAND_SYNTAX_ERROR;
-       if (fastload == NULL) {
+       if (!fastload) {
                LOG_ERROR("No image in memory");
                return ERROR_FAIL;
        }
@@ -6271,7 +6759,7 @@ COMMAND_HANDLER(handle_ps_command)
 
 static void binprint(struct command_invocation *cmd, const char *text, const uint8_t *buf, int size)
 {
-       if (text != NULL)
+       if (text)
                command_print_sameline(cmd, "%s", text);
        for (int i = 0; i < size; i++)
                command_print_sameline(cmd, " %02x", buf[i]);
@@ -6371,8 +6859,7 @@ next:
 out:
        free(test_pattern);
 
-       if (wa != NULL)
-               target_free_working_area(target, wa);
+       target_free_working_area(target, wa);
 
        /* Test writes */
        num_bytes = test_size + 4 + 4 + 4;
@@ -6456,8 +6943,7 @@ nextw:
 
        free(test_pattern);
 
-       if (wa != NULL)
-               target_free_working_area(target, wa);
+       target_free_working_area(target, wa);
        return retval;
 }
 
@@ -6670,20 +7156,32 @@ static const struct command_registration target_exec_command_handlers[] = {
                .usage = "filename [offset [type]]",
        },
        {
-               .name = "mem2array",
+               .name = "get_reg",
                .mode = COMMAND_EXEC,
-               .jim_handler = jim_mem2array,
-               .help = "read 8/16/32 bit memory and return as a TCL array "
-                       "for script processing",
-               .usage = "arrayname bitwidth address count",
+               .jim_handler = target_jim_get_reg,
+               .help = "Get register values from the target",
+               .usage = "list",
        },
        {
-               .name = "array2mem",
+               .name = "set_reg",
                .mode = COMMAND_EXEC,
-               .jim_handler = jim_array2mem,
-               .help = "convert a TCL array to memory locations "
-                       "and write the 8/16/32 bit values",
-               .usage = "arrayname bitwidth address count",
+               .jim_handler = target_jim_set_reg,
+               .help = "Set target register values",
+               .usage = "dict",
+       },
+       {
+               .name = "read_memory",
+               .mode = COMMAND_EXEC,
+               .jim_handler = target_jim_read_memory,
+               .help = "Read Tcl list of 8/16/32/64 bit numbers from target memory",
+               .usage = "address width count ['phys']",
+       },
+       {
+               .name = "write_memory",
+               .mode = COMMAND_EXEC,
+               .jim_handler = target_jim_write_memory,
+               .help = "Write Tcl list of 8/16/32/64 bit numbers to target memory",
+               .usage = "address width data ['phys']",
        },
        {
                .name = "reset_nag",