Use boolean argument for register_get_by_name()
[fw/openocd] / src / target / target.c
index 9b6348a7df49ec49222c76244995126f7861a4ad..dbc99b41cfcd7eb5dffb39851160b21deed51f87 100644 (file)
@@ -72,8 +72,6 @@ static int target_get_gdb_fileio_info_default(struct target *target,
                struct gdb_fileio_info *fileio_info);
 static int target_gdb_fileio_end_default(struct target *target, int retcode,
                int fileio_errno, bool ctrl_c);
-static int target_profiling_default(struct target *target, uint32_t *samples,
-               uint32_t max_num_samples, uint32_t *num_samples, uint32_t seconds);
 
 /* targets */
 extern struct target_type arm7tdmi_target;
@@ -94,6 +92,7 @@ extern struct target_type cortexr4_target;
 extern struct target_type arm11_target;
 extern struct target_type ls1_sap_target;
 extern struct target_type mips_m4k_target;
+extern struct target_type mips_mips64_target;
 extern struct target_type avr_target;
 extern struct target_type dsp563xx_target;
 extern struct target_type dsp5680xx_target;
@@ -107,6 +106,10 @@ extern struct target_type or1k_target;
 extern struct target_type quark_x10xx_target;
 extern struct target_type quark_d20xx_target;
 extern struct target_type stm8_target;
+extern struct target_type riscv_target;
+extern struct target_type mem_ap_target;
+extern struct target_type esirisc_target;
+extern struct target_type arcv2_target;
 
 static struct target_type *target_types[] = {
        &arm7tdmi_target,
@@ -139,20 +142,23 @@ static struct target_type *target_types[] = {
        &quark_x10xx_target,
        &quark_d20xx_target,
        &stm8_target,
-#if BUILD_TARGET64
+       &riscv_target,
+       &mem_ap_target,
+       &esirisc_target,
+       &arcv2_target,
        &aarch64_target,
-#endif
+       &mips_mips64_target,
        NULL,
 };
 
 struct target *all_targets;
 static struct target_event_callback *target_event_callbacks;
 static struct target_timer_callback *target_timer_callbacks;
-LIST_HEAD(target_reset_callback_list);
-LIST_HEAD(target_trace_callback_list);
+static LIST_HEAD(target_reset_callback_list);
+static LIST_HEAD(target_trace_callback_list);
 static const int polling_interval = 100;
 
-static const Jim_Nvp nvp_assert[] = {
+static const struct jim_nvp nvp_assert[] = {
        { .name = "assert", NVP_ASSERT },
        { .name = "deassert", NVP_DEASSERT },
        { .name = "T", NVP_ASSERT },
@@ -162,16 +168,16 @@ static const Jim_Nvp nvp_assert[] = {
        { .name = NULL, .value = -1 }
 };
 
-static const Jim_Nvp nvp_error_target[] = {
+static const struct jim_nvp nvp_error_target[] = {
        { .value = ERROR_TARGET_INVALID, .name = "err-invalid" },
        { .value = ERROR_TARGET_INIT_FAILED, .name = "err-init-failed" },
        { .value = ERROR_TARGET_TIMEOUT, .name = "err-timeout" },
        { .value = ERROR_TARGET_NOT_HALTED, .name = "err-not-halted" },
        { .value = ERROR_TARGET_FAILURE, .name = "err-failure" },
-       { .value = ERROR_TARGET_UNALIGNED_ACCESS   , .name = "err-unaligned-access" },
-       { .value = ERROR_TARGET_DATA_ABORT , .name = "err-data-abort" },
-       { .value = ERROR_TARGET_RESOURCE_NOT_AVAILABLE , .name = "err-resource-not-available" },
-       { .value = ERROR_TARGET_TRANSLATION_FAULT  , .name = "err-translation-fault" },
+       { .value = ERROR_TARGET_UNALIGNED_ACCESS, .name = "err-unaligned-access" },
+       { .value = ERROR_TARGET_DATA_ABORT, .name = "err-data-abort" },
+       { .value = ERROR_TARGET_RESOURCE_NOT_AVAILABLE, .name = "err-resource-not-available" },
+       { .value = ERROR_TARGET_TRANSLATION_FAULT, .name = "err-translation-fault" },
        { .value = ERROR_TARGET_NOT_RUNNING, .name = "err-not-running" },
        { .value = ERROR_TARGET_NOT_EXAMINED, .name = "err-not-examined" },
        { .value = -1, .name = NULL }
@@ -179,22 +185,24 @@ static const Jim_Nvp nvp_error_target[] = {
 
 static const char *target_strerror_safe(int err)
 {
-       const Jim_Nvp *n;
+       const struct jim_nvp *n;
 
-       n = Jim_Nvp_value2name_simple(nvp_error_target, err);
+       n = jim_nvp_value2name_simple(nvp_error_target, err);
        if (n->name == NULL)
                return "unknown";
        else
                return n->name;
 }
 
-static const Jim_Nvp nvp_target_event[] = {
+static const struct jim_nvp nvp_target_event[] = {
 
        { .value = TARGET_EVENT_GDB_HALT, .name = "gdb-halt" },
        { .value = TARGET_EVENT_HALTED, .name = "halted" },
        { .value = TARGET_EVENT_RESUMED, .name = "resumed" },
        { .value = TARGET_EVENT_RESUME_START, .name = "resume-start" },
        { .value = TARGET_EVENT_RESUME_END, .name = "resume-end" },
+       { .value = TARGET_EVENT_STEP_START, .name = "step-start" },
+       { .value = TARGET_EVENT_STEP_END, .name = "step-end" },
 
        { .name = "gdb-start", .value = TARGET_EVENT_GDB_START },
        { .name = "gdb-end", .value = TARGET_EVENT_GDB_END },
@@ -209,6 +217,7 @@ static const Jim_Nvp nvp_target_event[] = {
        { .value = TARGET_EVENT_RESET_END,           .name = "reset-end" },
 
        { .value = TARGET_EVENT_EXAMINE_START, .name = "examine-start" },
+       { .value = TARGET_EVENT_EXAMINE_FAIL, .name = "examine-fail" },
        { .value = TARGET_EVENT_EXAMINE_END, .name = "examine-end" },
 
        { .value = TARGET_EVENT_DEBUG_HALTED, .name = "debug-halted" },
@@ -218,17 +227,17 @@ static const Jim_Nvp nvp_target_event[] = {
        { .value = TARGET_EVENT_GDB_DETACH, .name = "gdb-detach" },
 
        { .value = TARGET_EVENT_GDB_FLASH_WRITE_START, .name = "gdb-flash-write-start" },
-       { .value = TARGET_EVENT_GDB_FLASH_WRITE_END  , .name = "gdb-flash-write-end"   },
+       { .value = TARGET_EVENT_GDB_FLASH_WRITE_END,   .name = "gdb-flash-write-end"   },
 
        { .value = TARGET_EVENT_GDB_FLASH_ERASE_START, .name = "gdb-flash-erase-start" },
-       { .value = TARGET_EVENT_GDB_FLASH_ERASE_END  , .name = "gdb-flash-erase-end" },
+       { .value = TARGET_EVENT_GDB_FLASH_ERASE_END,   .name = "gdb-flash-erase-end" },
 
        { .value = TARGET_EVENT_TRACE_CONFIG, .name = "trace-config" },
 
        { .name = NULL, .value = -1 }
 };
 
-static const Jim_Nvp nvp_target_state[] = {
+static const struct jim_nvp nvp_target_state[] = {
        { .name = "unknown", .value = TARGET_UNKNOWN },
        { .name = "running", .value = TARGET_RUNNING },
        { .name = "halted",  .value = TARGET_HALTED },
@@ -237,19 +246,20 @@ static const Jim_Nvp nvp_target_state[] = {
        { .name = NULL, .value = -1 },
 };
 
-static const Jim_Nvp nvp_target_debug_reason[] = {
-       { .name = "debug-request"            , .value = DBG_REASON_DBGRQ },
-       { .name = "breakpoint"               , .value = DBG_REASON_BREAKPOINT },
-       { .name = "watchpoint"               , .value = DBG_REASON_WATCHPOINT },
+static const struct jim_nvp nvp_target_debug_reason[] = {
+       { .name = "debug-request",             .value = DBG_REASON_DBGRQ },
+       { .name = "breakpoint",                .value = DBG_REASON_BREAKPOINT },
+       { .name = "watchpoint",                .value = DBG_REASON_WATCHPOINT },
        { .name = "watchpoint-and-breakpoint", .value = DBG_REASON_WPTANDBKPT },
-       { .name = "single-step"              , .value = DBG_REASON_SINGLESTEP },
-       { .name = "target-not-halted"        , .value = DBG_REASON_NOTHALTED  },
-       { .name = "program-exit"             , .value = DBG_REASON_EXIT },
-       { .name = "undefined"                , .value = DBG_REASON_UNDEFINED },
+       { .name = "single-step",               .value = DBG_REASON_SINGLESTEP },
+       { .name = "target-not-halted",         .value = DBG_REASON_NOTHALTED  },
+       { .name = "program-exit",              .value = DBG_REASON_EXIT },
+       { .name = "exception-catch",           .value = DBG_REASON_EXC_CATCH },
+       { .name = "undefined",                 .value = DBG_REASON_UNDEFINED },
        { .name = NULL, .value = -1 },
 };
 
-static const Jim_Nvp nvp_target_endian[] = {
+static const struct jim_nvp nvp_target_endian[] = {
        { .name = "big",    .value = TARGET_BIG_ENDIAN },
        { .name = "little", .value = TARGET_LITTLE_ENDIAN },
        { .name = "be",     .value = TARGET_BIG_ENDIAN },
@@ -257,19 +267,19 @@ static const Jim_Nvp nvp_target_endian[] = {
        { .name = NULL,     .value = -1 },
 };
 
-static const Jim_Nvp nvp_reset_modes[] = {
+static const struct jim_nvp nvp_reset_modes[] = {
        { .name = "unknown", .value = RESET_UNKNOWN },
-       { .name = "run"    , .value = RESET_RUN },
-       { .name = "halt"   , .value = RESET_HALT },
-       { .name = "init"   , .value = RESET_INIT },
-       { .name = NULL     , .value = -1 },
+       { .name = "run",     .value = RESET_RUN },
+       { .name = "halt",    .value = RESET_HALT },
+       { .name = "init",    .value = RESET_INIT },
+       { .name = NULL,      .value = -1 },
 };
 
 const char *debug_reason_name(struct target *t)
 {
        const char *cp;
 
-       cp = Jim_Nvp_value2name_simple(nvp_target_debug_reason,
+       cp = jim_nvp_value2name_simple(nvp_target_debug_reason,
                        t->debug_reason)->name;
        if (!cp) {
                LOG_ERROR("Invalid debug reason: %d", (int)(t->debug_reason));
@@ -281,7 +291,7 @@ const char *debug_reason_name(struct target *t)
 const char *target_state_name(struct target *t)
 {
        const char *cp;
-       cp = Jim_Nvp_value2name_simple(nvp_target_state, t->state)->name;
+       cp = jim_nvp_value2name_simple(nvp_target_state, t->state)->name;
        if (!cp) {
                LOG_ERROR("Invalid target state: %d", (int)(t->state));
                cp = "(*BUG*unknown*BUG*)";
@@ -296,7 +306,7 @@ const char *target_state_name(struct target *t)
 const char *target_event_name(enum target_event event)
 {
        const char *cp;
-       cp = Jim_Nvp_value2name_simple(nvp_target_event, event)->name;
+       cp = jim_nvp_value2name_simple(nvp_target_event, event)->name;
        if (!cp) {
                LOG_ERROR("Invalid target event: %d", (int)(event));
                cp = "(*BUG*unknown*BUG*)";
@@ -307,7 +317,7 @@ const char *target_event_name(enum target_event event)
 const char *target_reset_mode_name(enum target_reset_mode reset_mode)
 {
        const char *cp;
-       cp = Jim_Nvp_value2name_simple(nvp_reset_modes, reset_mode)->name;
+       cp = jim_nvp_value2name_simple(nvp_reset_modes, reset_mode)->name;
        if (!cp) {
                LOG_ERROR("Invalid target reset mode: %d", (int)(reset_mode));
                cp = "(*BUG*unknown*BUG*)";
@@ -332,6 +342,15 @@ static int new_target_number(void)
        return x + 1;
 }
 
+static void append_to_list_all_targets(struct target *target)
+{
+       struct target **t = &all_targets;
+
+       while (*t)
+               t = &((*t)->next);
+       *t = target;
+}
+
 /* read a uint64_t from a buffer in target memory endianness */
 uint64_t target_buffer_get_u64(struct target *target, const uint8_t *buffer)
 {
@@ -368,12 +387,6 @@ uint16_t target_buffer_get_u16(struct target *target, const uint8_t *buffer)
                return be_to_h_u16(buffer);
 }
 
-/* read a uint8_t from a buffer in target memory endianness */
-static uint8_t target_buffer_get_u8(struct target *target, const uint8_t *buffer)
-{
-       return *buffer & 0x0ff;
-}
-
 /* write a uint64_t to a buffer in target memory endianness */
 void target_buffer_set_u64(struct target *target, uint8_t *buffer, uint64_t value)
 {
@@ -511,9 +524,7 @@ struct target *get_target_by_num(int num)
 
 struct target *get_current_target(struct command_context *cmd_ctx)
 {
-       struct target *target = cmd_ctx->current_target_override
-               ? cmd_ctx->current_target_override
-               : cmd_ctx->current_target;
+       struct target *target = get_current_target_or_null(cmd_ctx);
 
        if (target == NULL) {
                LOG_ERROR("BUG: current_target out of bounds");
@@ -523,6 +534,13 @@ struct target *get_current_target(struct command_context *cmd_ctx)
        return target;
 }
 
+struct target *get_current_target_or_null(struct command_context *cmd_ctx)
+{
+       return cmd_ctx->current_target_override
+               ? cmd_ctx->current_target_override
+               : cmd_ctx->current_target;
+}
+
 int target_poll(struct target *target)
 {
        int retval;
@@ -582,7 +600,7 @@ int target_halt(struct target *target)
  * @param address Optionally used as the program counter.
  * @param handle_breakpoints True iff breakpoints at the resumption PC
  *     should be skipped.  (For example, maybe execution was stopped by
- *     such a breakpoint, in which case it would be counterprodutive to
+ *     such a breakpoint, in which case it would be counterproductive to
  *     let it re-trigger.
  * @param debug_execution False if all working areas allocated by OpenOCD
  *     should be released and/or restored to their original contents.
@@ -619,7 +637,18 @@ int target_resume(struct target *target, int current, target_addr_t address,
         * we poll. The CPU can even halt at the current PC as a result of
         * a software breakpoint being inserted by (a bug?) the application.
         */
+       /*
+        * resume() triggers the event 'resumed'. The execution of TCL commands
+        * in the event handler causes the polling of targets. If the target has
+        * already halted for a breakpoint, polling will run the 'halted' event
+        * handler before the pending 'resumed' handler.
+        * Disable polling during resume() to guarantee the execution of handlers
+        * in the correct order.
+        */
+       bool save_poll = jtag_poll_get_enabled();
+       jtag_poll_set_enabled(false);
        retval = target->type->resume(target, current, address, handle_breakpoints, debug_execution);
+       jtag_poll_set_enabled(save_poll);
        if (retval != ERROR_OK)
                return retval;
 
@@ -628,12 +657,12 @@ int target_resume(struct target *target, int current, target_addr_t address,
        return retval;
 }
 
-static int target_process_reset(struct command_context *cmd_ctx, enum target_reset_mode reset_mode)
+static int target_process_reset(struct command_invocation *cmd, enum target_reset_mode reset_mode)
 {
        char buf[100];
        int retval;
-       Jim_Nvp *n;
-       n = Jim_Nvp_value2name_simple(nvp_reset_modes, reset_mode);
+       struct jim_nvp *n;
+       n = jim_nvp_value2name_simple(nvp_reset_modes, reset_mode);
        if (n->name == NULL) {
                LOG_ERROR("invalid reset mode");
                return ERROR_FAIL;
@@ -652,13 +681,13 @@ static int target_process_reset(struct command_context *cmd_ctx, enum target_res
        jtag_poll_set_enabled(false);
 
        sprintf(buf, "ocd_process_reset %s", n->name);
-       retval = Jim_Eval(cmd_ctx->interp, buf);
+       retval = Jim_Eval(cmd->ctx->interp, buf);
 
        jtag_poll_set_enabled(save_poll);
 
        if (retval != JIM_OK) {
-               Jim_MakeErrorMessage(cmd_ctx->interp);
-               command_print(NULL, "%s\n", Jim_GetString(Jim_GetResult(cmd_ctx->interp), NULL));
+               Jim_MakeErrorMessage(cmd->ctx->interp);
+               command_print(cmd, "%s", Jim_GetString(Jim_GetResult(cmd->ctx->interp), NULL));
                return ERROR_FAIL;
        }
 
@@ -698,13 +727,17 @@ static int default_check_reset(struct target *target)
        return ERROR_OK;
 }
 
+/* Equivalent Tcl code arp_examine_one is in src/target/startup.tcl
+ * Keep in sync */
 int target_examine_one(struct target *target)
 {
        target_call_event_callbacks(target, TARGET_EVENT_EXAMINE_START);
 
        int retval = target->type->examine(target);
-       if (retval != ERROR_OK)
+       if (retval != ERROR_OK) {
+               target_call_event_callbacks(target, TARGET_EVENT_EXAMINE_FAIL);
                return retval;
+       }
 
        target_call_event_callbacks(target, TARGET_EVENT_EXAMINE_END);
 
@@ -744,9 +777,11 @@ int target_examine(void)
                if (target->defer_examine)
                        continue;
 
-               retval = target_examine_one(target);
-               if (retval != ERROR_OK)
-                       return retval;
+               int retval2 = target_examine_one(target);
+               if (retval2 != ERROR_OK) {
+                       LOG_WARNING("target %s examination failed", target_name(target));
+                       retval = retval2;
+               }
        }
        return retval;
 }
@@ -779,6 +814,13 @@ static int target_soft_reset_halt(struct target *target)
  * algorithm.
  *
  * @param target used to run the algorithm
+ * @param num_mem_params
+ * @param mem_params
+ * @param num_reg_params
+ * @param reg_param
+ * @param entry_point
+ * @param exit_point
+ * @param timeout_ms
  * @param arch_info target-specific description of the algorithm.
  */
 int target_run_algorithm(struct target *target,
@@ -814,6 +856,12 @@ done:
  * Executes a target-specific native code algorithm and leaves it running.
  *
  * @param target used to run the algorithm
+ * @param num_mem_params
+ * @param mem_params
+ * @param num_reg_params
+ * @param reg_params
+ * @param entry_point
+ * @param exit_point
  * @param arch_info target-specific description of the algorithm.
  */
 int target_start_algorithm(struct target *target,
@@ -852,6 +900,12 @@ done:
  * Waits for an algorithm started with target_start_algorithm() to complete.
  *
  * @param target used to run the algorithm
+ * @param num_mem_params
+ * @param mem_params
+ * @param num_reg_params
+ * @param reg_params
+ * @param exit_point
+ * @param timeout_ms
  * @param arch_info target-specific description of the algorithm.
  */
 int target_wait_algorithm(struct target *target,
@@ -923,6 +977,7 @@ done:
  * @param entry_point address on the target to execute to start the algorithm
  * @param exit_point address at which to set a breakpoint to catch the
  *     end of the algorithm; can be 0 if target triggers a breakpoint itself
+ * @param arch_info
  */
 
 int target_run_flash_async_algorithm(struct target *target,
@@ -1007,11 +1062,11 @@ int target_run_flash_async_algorithm(struct target *target,
                         * programming. The exact delay shouldn't matter as long as it's
                         * less than buffer size / flash speed. This is very unlikely to
                         * run when using high latency connections such as USB. */
-                       alive_sleep(10);
+                       alive_sleep(2);
 
                        /* to stop an infinite loop on some targets check and increment a timeout
                         * this issue was observed on a stellaris using the new ICDI interface */
-                       if (timeout++ >= 500) {
+                       if (timeout++ >= 2500) {
                                LOG_ERROR("timeout waiting for algorithm, a target reset is recommended");
                                return ERROR_FLASH_OPERATION_FAILED;
                        }
@@ -1025,6 +1080,10 @@ int target_run_flash_async_algorithm(struct target *target,
                if (thisrun_bytes > count * block_size)
                        thisrun_bytes = count * block_size;
 
+               /* Force end of large blocks to be word aligned */
+               if (thisrun_bytes >= 16)
+                       thisrun_bytes -= (rp + thisrun_bytes) & 0x03;
+
                /* Write data to fifo */
                retval = target_write_buffer(target, wp, thisrun_bytes, buffer);
                if (retval != ERROR_OK)
@@ -1041,6 +1100,9 @@ int target_run_flash_async_algorithm(struct target *target,
                retval = target_write_u32(target, wp_addr, wp);
                if (retval != ERROR_OK)
                        break;
+
+               /* Avoid GDB timeouts */
+               keep_alive();
        }
 
        if (retval != ERROR_OK) {
@@ -1071,6 +1133,156 @@ int target_run_flash_async_algorithm(struct target *target,
        return retval;
 }
 
+int target_run_read_async_algorithm(struct target *target,
+               uint8_t *buffer, uint32_t count, int block_size,
+               int num_mem_params, struct mem_param *mem_params,
+               int num_reg_params, struct reg_param *reg_params,
+               uint32_t buffer_start, uint32_t buffer_size,
+               uint32_t entry_point, uint32_t exit_point, void *arch_info)
+{
+       int retval;
+       int timeout = 0;
+
+       const uint8_t *buffer_orig = buffer;
+
+       /* Set up working area. First word is write pointer, second word is read pointer,
+        * rest is fifo data area. */
+       uint32_t wp_addr = buffer_start;
+       uint32_t rp_addr = buffer_start + 4;
+       uint32_t fifo_start_addr = buffer_start + 8;
+       uint32_t fifo_end_addr = buffer_start + buffer_size;
+
+       uint32_t wp = fifo_start_addr;
+       uint32_t rp = fifo_start_addr;
+
+       /* validate block_size is 2^n */
+       assert(!block_size || !(block_size & (block_size - 1)));
+
+       retval = target_write_u32(target, wp_addr, wp);
+       if (retval != ERROR_OK)
+               return retval;
+       retval = target_write_u32(target, rp_addr, rp);
+       if (retval != ERROR_OK)
+               return retval;
+
+       /* Start up algorithm on target */
+       retval = target_start_algorithm(target, num_mem_params, mem_params,
+                       num_reg_params, reg_params,
+                       entry_point,
+                       exit_point,
+                       arch_info);
+
+       if (retval != ERROR_OK) {
+               LOG_ERROR("error starting target flash read algorithm");
+               return retval;
+       }
+
+       while (count > 0) {
+               retval = target_read_u32(target, wp_addr, &wp);
+               if (retval != ERROR_OK) {
+                       LOG_ERROR("failed to get write pointer");
+                       break;
+               }
+
+               LOG_DEBUG("offs 0x%zx count 0x%" PRIx32 " wp 0x%" PRIx32 " rp 0x%" PRIx32,
+                       (size_t)(buffer - buffer_orig), count, wp, rp);
+
+               if (wp == 0) {
+                       LOG_ERROR("flash read algorithm aborted by target");
+                       retval = ERROR_FLASH_OPERATION_FAILED;
+                       break;
+               }
+
+               if (((wp - fifo_start_addr) & (block_size - 1)) || wp < fifo_start_addr || wp >= fifo_end_addr) {
+                       LOG_ERROR("corrupted fifo write pointer 0x%" PRIx32, wp);
+                       break;
+               }
+
+               /* Count the number of bytes available in the fifo without
+                * crossing the wrap around. */
+               uint32_t thisrun_bytes;
+               if (wp >= rp)
+                       thisrun_bytes = wp - rp;
+               else
+                       thisrun_bytes = fifo_end_addr - rp;
+
+               if (thisrun_bytes == 0) {
+                       /* Throttle polling a bit if transfer is (much) faster than flash
+                        * reading. The exact delay shouldn't matter as long as it's
+                        * less than buffer size / flash speed. This is very unlikely to
+                        * run when using high latency connections such as USB. */
+                       alive_sleep(2);
+
+                       /* to stop an infinite loop on some targets check and increment a timeout
+                        * this issue was observed on a stellaris using the new ICDI interface */
+                       if (timeout++ >= 2500) {
+                               LOG_ERROR("timeout waiting for algorithm, a target reset is recommended");
+                               return ERROR_FLASH_OPERATION_FAILED;
+                       }
+                       continue;
+               }
+
+               /* Reset our timeout */
+               timeout = 0;
+
+               /* Limit to the amount of data we actually want to read */
+               if (thisrun_bytes > count * block_size)
+                       thisrun_bytes = count * block_size;
+
+               /* Force end of large blocks to be word aligned */
+               if (thisrun_bytes >= 16)
+                       thisrun_bytes -= (rp + thisrun_bytes) & 0x03;
+
+               /* Read data from fifo */
+               retval = target_read_buffer(target, rp, thisrun_bytes, buffer);
+               if (retval != ERROR_OK)
+                       break;
+
+               /* Update counters and wrap write pointer */
+               buffer += thisrun_bytes;
+               count -= thisrun_bytes / block_size;
+               rp += thisrun_bytes;
+               if (rp >= fifo_end_addr)
+                       rp = fifo_start_addr;
+
+               /* Store updated write pointer to target */
+               retval = target_write_u32(target, rp_addr, rp);
+               if (retval != ERROR_OK)
+                       break;
+
+               /* Avoid GDB timeouts */
+               keep_alive();
+
+       }
+
+       if (retval != ERROR_OK) {
+               /* abort flash write algorithm on target */
+               target_write_u32(target, rp_addr, 0);
+       }
+
+       int retval2 = target_wait_algorithm(target, num_mem_params, mem_params,
+                       num_reg_params, reg_params,
+                       exit_point,
+                       10000,
+                       arch_info);
+
+       if (retval2 != ERROR_OK) {
+               LOG_ERROR("error waiting for target flash write algorithm");
+               retval = retval2;
+       }
+
+       if (retval == ERROR_OK) {
+               /* check if algorithm set wp = 0 after fifo writer loop finished */
+               retval = target_read_u32(target, wp_addr, &wp);
+               if (retval == ERROR_OK && wp == 0) {
+                       LOG_ERROR("flash read algorithm aborted by target");
+                       retval = ERROR_FLASH_OPERATION_FAILED;
+               }
+       }
+
+       return retval;
+}
+
 int target_read_memory(struct target *target,
                target_addr_t address, uint32_t size, uint32_t count, uint8_t *buffer)
 {
@@ -1195,16 +1407,69 @@ int target_hit_watchpoint(struct target *target,
        return target->type->hit_watchpoint(target, hit_watchpoint);
 }
 
+const char *target_get_gdb_arch(struct target *target)
+{
+       if (target->type->get_gdb_arch == NULL)
+               return NULL;
+       return target->type->get_gdb_arch(target);
+}
+
 int target_get_gdb_reg_list(struct target *target,
                struct reg **reg_list[], int *reg_list_size,
                enum target_register_class reg_class)
 {
-       return target->type->get_gdb_reg_list(target, reg_list, reg_list_size, reg_class);
+       int result = ERROR_FAIL;
+
+       if (!target_was_examined(target)) {
+               LOG_ERROR("Target not examined yet");
+               goto done;
+       }
+
+       result = target->type->get_gdb_reg_list(target, reg_list,
+                       reg_list_size, reg_class);
+
+done:
+       if (result != ERROR_OK) {
+               *reg_list = NULL;
+               *reg_list_size = 0;
+       }
+       return result;
+}
+
+int target_get_gdb_reg_list_noread(struct target *target,
+               struct reg **reg_list[], int *reg_list_size,
+               enum target_register_class reg_class)
+{
+       if (target->type->get_gdb_reg_list_noread &&
+                       target->type->get_gdb_reg_list_noread(target, reg_list,
+                               reg_list_size, reg_class) == ERROR_OK)
+               return ERROR_OK;
+       return target_get_gdb_reg_list(target, reg_list, reg_list_size, reg_class);
 }
+
+bool target_supports_gdb_connection(struct target *target)
+{
+       /*
+        * exclude all the targets that don't provide get_gdb_reg_list
+        * or that have explicit gdb_max_connection == 0
+        */
+       return !!target->type->get_gdb_reg_list && !!target->gdb_max_connections;
+}
+
 int target_step(struct target *target,
                int current, target_addr_t address, int handle_breakpoints)
 {
-       return target->type->step(target, current, address, handle_breakpoints);
+       int retval;
+
+       target_call_event_callbacks(target, TARGET_EVENT_STEP_START);
+
+       retval = target->type->step(target, current, address, handle_breakpoints);
+       if (retval != ERROR_OK)
+               return retval;
+
+       target_call_event_callbacks(target, TARGET_EVENT_STEP_END);
+
+       return retval;
 }
 
 int target_get_gdb_fileio_info(struct target *target, struct gdb_fileio_info *fileio_info)
@@ -1225,13 +1490,32 @@ int target_gdb_fileio_end(struct target *target, int retcode, int fileio_errno,
        return target->type->gdb_fileio_end(target, retcode, fileio_errno, ctrl_c);
 }
 
-int target_profiling(struct target *target, uint32_t *samples,
+target_addr_t target_address_max(struct target *target)
+{
+       unsigned bits = target_address_bits(target);
+       if (sizeof(target_addr_t) * 8 == bits)
+               return (target_addr_t) -1;
+       else
+               return (((target_addr_t) 1) << bits) - 1;
+}
+
+unsigned target_address_bits(struct target *target)
+{
+       if (target->type->address_bits)
+               return target->type->address_bits(target);
+       return 32;
+}
+
+unsigned int target_data_bits(struct target *target)
+{
+       if (target->type->data_bits)
+               return target->type->data_bits(target);
+       return 32;
+}
+
+static int target_profiling(struct target *target, uint32_t *samples,
                        uint32_t max_num_samples, uint32_t *num_samples, uint32_t seconds)
 {
-       if (target->state != TARGET_HALTED) {
-               LOG_WARNING("target %s is not halted (profiling)", target->cmd_name);
-               return ERROR_TARGET_NOT_HALTED;
-       }
        return target->type->profiling(target, samples, max_num_samples,
                        num_samples, seconds);
 }
@@ -1326,7 +1610,7 @@ static int target_init(struct command_context *cmd_ctx)
                return retval;
 
        retval = target_register_timer_callback(&handle_target,
-                       polling_interval, 1, cmd_ctx->interp);
+                       polling_interval, TARGET_TIMER_TYPE_PERIODIC, cmd_ctx->interp);
        if (ERROR_OK != retval)
                return retval;
 
@@ -1429,7 +1713,8 @@ int target_register_trace_callback(int (*callback)(struct target *target,
        return ERROR_OK;
 }
 
-int target_register_timer_callback(int (*callback)(void *priv), int time_ms, int periodic, void *priv)
+int target_register_timer_callback(int (*callback)(void *priv),
+               unsigned int time_ms, enum target_timer_type type, void *priv)
 {
        struct target_timer_callback **callbacks_p = &target_timer_callbacks;
 
@@ -1444,7 +1729,7 @@ int target_register_timer_callback(int (*callback)(void *priv), int time_ms, int
 
        (*callbacks_p) = malloc(sizeof(struct target_timer_callback));
        (*callbacks_p)->callback = callback;
-       (*callbacks_p)->periodic = periodic;
+       (*callbacks_p)->type = type;
        (*callbacks_p)->time_ms = time_ms;
        (*callbacks_p)->removed = false;
 
@@ -1544,8 +1829,9 @@ int target_call_event_callbacks(struct target *target, enum target_event event)
                target_call_event_callbacks(target, TARGET_EVENT_GDB_HALT);
        }
 
-       LOG_DEBUG("target event %i (%s)", event,
-                       Jim_Nvp_value2name_simple(nvp_target_event, event)->name);
+       LOG_DEBUG("target event %i (%s) for core %s", event,
+                       jim_nvp_value2name_simple(nvp_target_event, event)->name,
+                       target_name(target));
 
        target_handle_event(target, event);
 
@@ -1563,7 +1849,7 @@ int target_call_reset_callbacks(struct target *target, enum target_reset_mode re
        struct target_reset_callback *callback;
 
        LOG_DEBUG("target reset %i (%s)", reset_mode,
-                       Jim_Nvp_value2name_simple(nvp_reset_modes, reset_mode)->name);
+                       jim_nvp_value2name_simple(nvp_reset_modes, reset_mode)->name);
 
        list_for_each_entry(callback, &target_reset_callback_list, list)
                callback->callback(target, reset_mode, callback->priv);
@@ -1594,7 +1880,7 @@ static int target_call_timer_callback(struct target_timer_callback *cb,
 {
        cb->callback(cb->priv);
 
-       if (cb->periodic)
+       if (cb->type == TARGET_TIMER_TYPE_PERIODIC)
                return target_timer_callback_periodic_restart(cb, now);
 
        return target_unregister_timer_callback(cb->callback, cb->priv);
@@ -1619,7 +1905,7 @@ static int target_call_timer_callbacks_check_time(int checktime)
         * next item; initially, that's a standalone "root of the
         * list" variable. */
        struct target_timer_callback **callback = &target_timer_callbacks;
-       while (*callback) {
+       while (callback && *callback) {
                if ((*callback)->removed) {
                        struct target_timer_callback *p = *callback;
                        *callback = (*callback)->next;
@@ -1628,7 +1914,7 @@ static int target_call_timer_callbacks_check_time(int checktime)
                }
 
                bool call_it = (*callback)->callback &&
-                       ((!checktime && (*callback)->periodic) ||
+                       ((!checktime && (*callback)->type == TARGET_TIMER_TYPE_PERIODIC) ||
                         timeval_compare(&now, &(*callback)->when) >= 0);
 
                if (call_it)
@@ -1690,10 +1976,8 @@ static void target_split_working_area(struct working_area *area, uint32_t size)
 
                /* If backup memory was allocated to this area, it has the wrong size
                 * now so free it and it will be reallocated if/when needed */
-               if (area->backup) {
-                       free(area->backup);
-                       area->backup = NULL;
-               }
+               free(area->backup);
+               area->backup = NULL;
        }
 }
 
@@ -1713,16 +1997,13 @@ static void target_merge_working_areas(struct target *target)
                        /* Remove the last */
                        struct working_area *to_be_freed = c->next;
                        c->next = c->next->next;
-                       if (to_be_freed->backup)
-                               free(to_be_freed->backup);
+                       free(to_be_freed->backup);
                        free(to_be_freed);
 
                        /* If backup memory was allocated to the remaining area, it's has
                         * the wrong size now */
-                       if (c->backup) {
-                               free(c->backup);
-                               c->backup = NULL;
-                       }
+                       free(c->backup);
+                       c->backup = NULL;
                } else {
                        c = c->next;
                }
@@ -1888,11 +2169,74 @@ int target_free_working_area(struct target *target, struct working_area *area)
        return target_free_working_area_restore(target, area, 1);
 }
 
+/* free resources and restore memory, if restoring memory fails,
+ * free up resources anyway
+ */
+static void target_free_all_working_areas_restore(struct target *target, int restore)
+{
+       struct working_area *c = target->working_areas;
+
+       LOG_DEBUG("freeing all working areas");
+
+       /* Loop through all areas, restoring the allocated ones and marking them as free */
+       while (c) {
+               if (!c->free) {
+                       if (restore)
+                               target_restore_working_area(target, c);
+                       c->free = true;
+                       *c->user = NULL; /* Same as above */
+                       c->user = NULL;
+               }
+               c = c->next;
+       }
+
+       /* Run a merge pass to combine all areas into one */
+       target_merge_working_areas(target);
+
+       print_wa_layout(target);
+}
+
+void target_free_all_working_areas(struct target *target)
+{
+       target_free_all_working_areas_restore(target, 1);
+
+       /* Now we have none or only one working area marked as free */
+       if (target->working_areas) {
+               /* Free the last one to allow on-the-fly moving and resizing */
+               free(target->working_areas->backup);
+               free(target->working_areas);
+               target->working_areas = NULL;
+       }
+}
+
+/* Find the largest number of bytes that can be allocated */
+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)
+               return target->working_area_size;
+
+       while (c) {
+               if (c->free && max_size < c->size)
+                       max_size = c->size;
+
+               c = c->next;
+       }
+
+       return max_size;
+}
+
 static void target_destroy(struct target *target)
 {
        if (target->type->deinit_target)
                target->type->deinit_target(target);
 
+       free(target->semihosting);
+
+       jtag_unregister_event_callback(jtag_enable_callback, target);
+
        struct target_event_action *teap = target->event_action;
        while (teap) {
                struct target_event_action *next = teap->next;
@@ -1902,12 +2246,22 @@ static void target_destroy(struct target *target)
        }
 
        target_free_all_working_areas(target);
-       /* Now we have none or only one working area marked as free */
-       if (target->working_areas) {
-               free(target->working_areas->backup);
-               free(target->working_areas);
+
+       /* release the targets SMP list */
+       if (target->smp) {
+               struct target_list *head = target->head;
+               while (head != NULL) {
+                       struct target_list *pos = head->next;
+                       head->target->smp = 0;
+                       free(head);
+                       head = pos;
+               }
+               target->smp = 0;
        }
 
+       rtos_destroy(target);
+
+       free(target->gdb_port_override);
        free(target->type);
        free(target->trace_info);
        free(target->fileio_info);
@@ -1944,57 +2298,6 @@ void target_quit(void)
        all_targets = NULL;
 }
 
-/* free resources and restore memory, if restoring memory fails,
- * free up resources anyway
- */
-static void target_free_all_working_areas_restore(struct target *target, int restore)
-{
-       struct working_area *c = target->working_areas;
-
-       LOG_DEBUG("freeing all working areas");
-
-       /* Loop through all areas, restoring the allocated ones and marking them as free */
-       while (c) {
-               if (!c->free) {
-                       if (restore)
-                               target_restore_working_area(target, c);
-                       c->free = true;
-                       *c->user = NULL; /* Same as above */
-                       c->user = NULL;
-               }
-               c = c->next;
-       }
-
-       /* Run a merge pass to combine all areas into one */
-       target_merge_working_areas(target);
-
-       print_wa_layout(target);
-}
-
-void target_free_all_working_areas(struct target *target)
-{
-       target_free_all_working_areas_restore(target, 1);
-}
-
-/* Find the largest number of bytes that can be allocated */
-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)
-               return target->working_area_size;
-
-       while (c) {
-               if (c->free && max_size < c->size)
-                       max_size = c->size;
-
-               c = c->next;
-       }
-
-       return max_size;
-}
-
 int target_arch_state(struct target *target)
 {
        int retval;
@@ -2026,7 +2329,7 @@ static int target_gdb_fileio_end_default(struct target *target,
        return ERROR_OK;
 }
 
-static int target_profiling_default(struct target *target, uint32_t *samples,
+int target_profiling_default(struct target *target, uint32_t *samples,
                uint32_t max_num_samples, uint32_t *num_samples, uint32_t seconds)
 {
        struct timeval timeout, now;
@@ -2039,7 +2342,7 @@ static 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 (;;) {
@@ -2080,7 +2383,7 @@ static int target_profiling_default(struct target *target, uint32_t *samples,
  */
 int target_write_buffer(struct target *target, target_addr_t address, uint32_t size, const uint8_t *buffer)
 {
-       LOG_DEBUG("writing buffer of %" PRIi32 " byte at " TARGET_ADDR_FMT,
+       LOG_DEBUG("writing buffer of %" PRIu32 " byte at " TARGET_ADDR_FMT,
                          size, address);
 
        if (!target_was_examined(target)) {
@@ -2106,10 +2409,13 @@ static int target_write_buffer_default(struct target *target,
        target_addr_t address, uint32_t count, const uint8_t *buffer)
 {
        uint32_t size;
+       unsigned int data_bytes = target_data_bits(target) / 8;
 
-       /* Align up to maximum bytes. The loop condition makes sure the next pass
+       /* Align up to maximum bytes. The loop condition makes sure the next pass
         * will have something to do with the size we leave to it. */
-       for (size = 1; size < 4 && count >= size * 2 + (address & size); size *= 2) {
+       for (size = 1;
+                       size < data_bytes && count >= size * 2 + (address & size);
+                       size *= 2) {
                if (address & size) {
                        int retval = target_write_memory(target, address, size, 1, buffer);
                        if (retval != ERROR_OK)
@@ -2142,7 +2448,7 @@ static int target_write_buffer_default(struct target *target,
  */
 int target_read_buffer(struct target *target, target_addr_t address, uint32_t size, uint8_t *buffer)
 {
-       LOG_DEBUG("reading buffer of %" PRIi32 " byte at " TARGET_ADDR_FMT,
+       LOG_DEBUG("reading buffer of %" PRIu32 " byte at " TARGET_ADDR_FMT,
                          size, address);
 
        if (!target_was_examined(target)) {
@@ -2167,10 +2473,13 @@ int target_read_buffer(struct target *target, target_addr_t address, uint32_t si
 static int target_read_buffer_default(struct target *target, target_addr_t address, uint32_t count, uint8_t *buffer)
 {
        uint32_t size;
+       unsigned int data_bytes = target_data_bits(target) / 8;
 
-       /* Align up to maximum bytes. The loop condition makes sure the next pass
+       /* Align up to maximum bytes. The loop condition makes sure the next pass
         * will have something to do with the size we leave to it. */
-       for (size = 1; size < 4 && count >= size * 2 + (address & size); size *= 2) {
+       for (size = 1;
+                       size < data_bytes && count >= size * 2 + (address & size);
+                       size *= 2) {
                if (address & size) {
                        int retval = target_read_memory(target, address, size, 1, buffer);
                        if (retval != ERROR_OK)
@@ -2197,7 +2506,7 @@ static int target_read_buffer_default(struct target *target, target_addr_t addre
        return ERROR_OK;
 }
 
-int target_checksum_memory(struct target *target, target_addr_t address, uint32_t size, uint32_tcrc)
+int target_checksum_memory(struct target *target, target_addr_t address, uint32_t size, uint32_t *crc)
 {
        uint8_t *buffer;
        int retval;
@@ -2212,7 +2521,7 @@ int target_checksum_memory(struct target *target, target_addr_t address, uint32_
        if (retval != ERROR_OK) {
                buffer = malloc(size);
                if (buffer == NULL) {
-                       LOG_ERROR("error allocating buffer for section (%" PRId32 " bytes)", size);
+                       LOG_ERROR("error allocating buffer for section (%" PRIu32 " bytes)", size);
                        return ERROR_COMMAND_SYNTAX_ERROR;
                }
                retval = target_read_buffer(target, address, size, buffer);
@@ -2237,21 +2546,19 @@ int target_checksum_memory(struct target *target, target_addr_t address, uint32_
        return retval;
 }
 
-int target_blank_check_memory(struct target *target, target_addr_t address, uint32_t size, uint32_t* blank,
+int target_blank_check_memory(struct target *target,
+       struct target_memory_check_block *blocks, int num_blocks,
        uint8_t erased_value)
 {
-       int retval;
        if (!target_was_examined(target)) {
                LOG_ERROR("Target not examined yet");
                return ERROR_FAIL;
        }
 
-       if (target->type->blank_check_memory == 0)
+       if (target->type->blank_check_memory == NULL)
                return ERROR_TARGET_RESOURCE_NOT_AVAILABLE;
 
-       retval = target->type->blank_check_memory(target, address, size, blank, erased_value);
-
-       return retval;
+       return target->type->blank_check_memory(target, blocks, num_blocks, erased_value);
 }
 
 int target_read_u64(struct target *target, target_addr_t address, uint64_t *value)
@@ -2510,23 +2817,23 @@ int target_write_phys_u8(struct target *target, target_addr_t address, uint8_t v
        return retval;
 }
 
-static int find_target(struct command_context *cmd_ctx, const char *name)
+static int find_target(struct command_invocation *cmd, const char *name)
 {
        struct target *target = get_target(name);
        if (target == NULL) {
-               LOG_ERROR("Target: %s is unknown, try one of:\n", name);
+               command_print(cmd, "Target: %s is unknown, try one of:\n", name);
                return ERROR_FAIL;
        }
        if (!target->tap->enabled) {
-               LOG_USER("Target: TAP %s is disabled, "
+               command_print(cmd, "Target: TAP %s is disabled, "
                         "can't be the current target\n",
                         target->tap->dotted_name);
                return ERROR_FAIL;
        }
 
-       cmd_ctx->current_target = target;
-       if (cmd_ctx->current_target_override)
-               cmd_ctx->current_target_override = target;
+       cmd->ctx->current_target = target;
+       if (cmd->ctx->current_target_override)
+               cmd->ctx->current_target_override = target;
 
        return ERROR_OK;
 }
@@ -2536,7 +2843,7 @@ COMMAND_HANDLER(handle_targets_command)
 {
        int retval = ERROR_OK;
        if (CMD_ARGC == 1) {
-               retval = find_target(CMD_CTX, CMD_ARGV[0]);
+               retval = find_target(CMD, CMD_ARGV[0]);
                if (retval == ERROR_OK) {
                        /* we're done! */
                        return retval;
@@ -2544,8 +2851,8 @@ COMMAND_HANDLER(handle_targets_command)
        }
 
        struct target *target = all_targets;
-       command_print(CMD_CTX, "    TargetName         Type       Endian TapName            State       ");
-       command_print(CMD_CTX, "--  ------------------ ---------- ------ ------------------ ------------");
+       command_print(CMD, "    TargetName         Type       Endian TapName            State       ");
+       command_print(CMD, "--  ------------------ ---------- ------ ------------------ ------------");
        while (target) {
                const char *state;
                char marker = ' ';
@@ -2559,13 +2866,13 @@ COMMAND_HANDLER(handle_targets_command)
                        marker = '*';
 
                /* keep columns lined up to match the headers above */
-               command_print(CMD_CTX,
+               command_print(CMD,
                                "%2d%c %-18s %-10s %-6s %-18s %s",
                                target->target_number,
                                marker,
                                target_name(target),
                                target_type_name(target),
-                               Jim_Nvp_value2name_simple(nvp_target_endian,
+                               jim_nvp_value2name_simple(nvp_target_endian,
                                        target->endianness)->name,
                                target->tap->dotted_name,
                                state);
@@ -2769,16 +3076,18 @@ COMMAND_HANDLER(handle_reg_command)
                while (cache) {
                        unsigned i;
 
-                       command_print(CMD_CTX, "===== %s", cache->name);
+                       command_print(CMD, "===== %s", cache->name);
 
                        for (i = 0, reg = cache->reg_list;
                                        i < cache->num_regs;
                                        i++, reg++, count++) {
+                               if (reg->exist == false || reg->hidden)
+                                       continue;
                                /* only print cached values if they are valid */
                                if (reg->valid) {
-                                       value = buf_to_str(reg->value,
-                                                       reg->size, 16);
-                                       command_print(CMD_CTX,
+                                       value = buf_to_hex_str(reg->value,
+                                                       reg->size);
+                                       command_print(CMD,
                                                        "(%i) %s (/%" PRIu32 "): 0x%s%s",
                                                        count, reg->name,
                                                        reg->size, value,
@@ -2787,9 +3096,9 @@ COMMAND_HANDLER(handle_reg_command)
                                                                : "");
                                        free(value);
                                } else {
-                                       command_print(CMD_CTX, "(%i) %s (/%" PRIu32 ")",
+                                       command_print(CMD, "(%i) %s (/%" PRIu32 ")",
                                                          count, reg->name,
-                                                         reg->size) ;
+                                                         reg->size);
                                }
                        }
                        cache = cache->next;
@@ -2819,22 +3128,23 @@ COMMAND_HANDLER(handle_reg_command)
                }
 
                if (!reg) {
-                       command_print(CMD_CTX, "%i is out of bounds, the current target "
+                       command_print(CMD, "%i is out of bounds, the current target "
                                        "has only %i registers (0 - %i)", num, count, count - 1);
                        return ERROR_OK;
                }
        } 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) {
-                       command_print(CMD_CTX, "register %s not found in current target", CMD_ARGV[0]);
-                       return ERROR_OK;
-               }
+               if (!reg)
+                       goto not_found;
        }
 
        assert(reg != NULL); /* give clang a hint that we *know* reg is != NULL here */
 
+       if (!reg->exist)
+               goto not_found;
+
        /* display a register */
        if ((CMD_ARGC == 1) || ((CMD_ARGC == 2) && !((CMD_ARGV[1][0] >= '0')
                        && (CMD_ARGV[1][0] <= '9')))) {
@@ -2843,8 +3153,8 @@ COMMAND_HANDLER(handle_reg_command)
 
                if (reg->valid == 0)
                        reg->type->get(reg);
-               value = buf_to_str(reg->value, reg->size, 16);
-               command_print(CMD_CTX, "%s (/%i): 0x%s", reg->name, (int)(reg->size), value);
+               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;
        }
@@ -2858,8 +3168,8 @@ COMMAND_HANDLER(handle_reg_command)
 
                reg->type->set(reg, buf);
 
-               value = buf_to_str(reg->value, reg->size, 16);
-               command_print(CMD_CTX, "%s (/%i): 0x%s", reg->name, (int)(reg->size), value);
+               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);
@@ -2868,6 +3178,10 @@ COMMAND_HANDLER(handle_reg_command)
        }
 
        return ERROR_COMMAND_SYNTAX_ERROR;
+
+not_found:
+       command_print(CMD, "register %s not found in current target", CMD_ARGV[0]);
+       return ERROR_OK;
 }
 
 COMMAND_HANDLER(handle_poll_command)
@@ -2876,9 +3190,9 @@ COMMAND_HANDLER(handle_poll_command)
        struct target *target = get_current_target(CMD_CTX);
 
        if (CMD_ARGC == 0) {
-               command_print(CMD_CTX, "background polling: %s",
+               command_print(CMD, "background polling: %s",
                                jtag_poll_get_enabled() ? "on" : "off");
-               command_print(CMD_CTX, "TAP: %s (%s)",
+               command_print(CMD, "TAP: %s (%s)",
                                target->tap->dotted_name,
                                target->tap->enabled ? "enabled" : "disabled");
                if (!target->tap->enabled)
@@ -2938,7 +3252,7 @@ int target_wait_state(struct target *target, enum target_state state, int ms)
                        once = false;
                        then = timeval_ms();
                        LOG_DEBUG("waiting for target %s...",
-                               Jim_Nvp_value2name_simple(nvp_target_state, state)->name);
+                               jim_nvp_value2name_simple(nvp_target_state, state)->name);
                }
 
                if (cur-then > 500)
@@ -2946,7 +3260,7 @@ int target_wait_state(struct target *target, enum target_state state, int ms)
 
                if ((cur-then) > ms) {
                        LOG_ERROR("timed out while waiting for target %s",
-                               Jim_Nvp_value2name_simple(nvp_target_state, state)->name);
+                               jim_nvp_value2name_simple(nvp_target_state, state)->name);
                        return ERROR_FAIL;
                }
        }
@@ -2959,6 +3273,9 @@ COMMAND_HANDLER(handle_halt_command)
        LOG_DEBUG("-");
 
        struct target *target = get_current_target(CMD_CTX);
+
+       target->verbose_halt_msg = true;
+
        int retval = target_halt(target);
        if (ERROR_OK != retval)
                return retval;
@@ -2993,15 +3310,15 @@ COMMAND_HANDLER(handle_reset_command)
 
        enum target_reset_mode reset_mode = RESET_RUN;
        if (CMD_ARGC == 1) {
-               const Jim_Nvp *n;
-               n = Jim_Nvp_name2value_simple(nvp_reset_modes, CMD_ARGV[0]);
+               const struct jim_nvp *n;
+               n = jim_nvp_name2value_simple(nvp_reset_modes, CMD_ARGV[0]);
                if ((n->name == NULL) || (n->value == RESET_UNKNOWN))
                        return ERROR_COMMAND_SYNTAX_ERROR;
                reset_mode = n->value;
        }
 
        /* reset *all* targets */
-       return target_process_reset(CMD_CTX, reset_mode);
+       return target_process_reset(CMD, reset_mode);
 }
 
 
@@ -3044,10 +3361,10 @@ COMMAND_HANDLER(handle_step_command)
 
        struct target *target = get_current_target(CMD_CTX);
 
-       return target->type->step(target, current_pc, addr, 1);
+       return target_step(target, current_pc, addr, 1);
 }
 
-static void handle_md_output(struct command_context *cmd_ctx,
+void target_handle_md_output(struct command_invocation *cmd,
                struct target *target, target_addr_t address, unsigned size,
                unsigned count, const uint8_t *buffer)
 {
@@ -3105,7 +3422,7 @@ static void handle_md_output(struct command_context *cmd_ctx,
                                value_fmt, value);
 
                if ((i % line_modulo == line_modulo - 1) || (i == count - 1)) {
-                       command_print(cmd_ctx, "%s", output);
+                       command_print(cmd, "%s", output);
                        output_len = 0;
                }
        }
@@ -3162,7 +3479,7 @@ COMMAND_HANDLER(handle_md_command)
        struct target *target = get_current_target(CMD_CTX);
        int retval = fn(target, address, size, count, buffer);
        if (ERROR_OK == retval)
-               handle_md_output(CMD_CTX, target, address, size, count, buffer);
+               target_handle_md_output(CMD, target, address, size, count, buffer);
 
        free(buffer);
 
@@ -3246,8 +3563,8 @@ COMMAND_HANDLER(handle_mw_command)
        target_addr_t address;
        COMMAND_PARSE_ADDRESS(CMD_ARGV[0], address);
 
-       target_addr_t value;
-       COMMAND_PARSE_ADDRESS(CMD_ARGV[1], value);
+       uint64_t value;
+       COMMAND_PARSE_NUMBER(u64, CMD_ARGV[1], value);
 
        unsigned count = 1;
        if (CMD_ARGC == 3)
@@ -3287,11 +3604,11 @@ static COMMAND_HELPER(parse_load_image_command_CMD_ARGV, struct image *image,
                target_addr_t addr;
                COMMAND_PARSE_ADDRESS(CMD_ARGV[1], addr);
                image->base_address = addr;
-               image->base_address_set = 1;
+               image->base_address_set = true;
        } else
-               image->base_address_set = 0;
+               image->base_address_set = false;
 
-       image->start_address_set = 0;
+       image->start_address_set = false;
 
        if (CMD_ARGC >= 4)
                COMMAND_PARSE_ADDRESS(CMD_ARGV[3], *min_address);
@@ -3314,7 +3631,6 @@ COMMAND_HANDLER(handle_load_image_command)
        uint32_t image_size;
        target_addr_t min_address = 0;
        target_addr_t max_address = -1;
-       int i;
        struct image image;
 
        int retval = CALL_COMMAND_HANDLER(parse_load_image_command_CMD_ARGV,
@@ -3332,10 +3648,10 @@ COMMAND_HANDLER(handle_load_image_command)
 
        image_size = 0x0;
        retval = ERROR_OK;
-       for (i = 0; i < image.num_sections; i++) {
+       for (unsigned int i = 0; i < image.num_sections; i++) {
                buffer = malloc(image.sections[i].size);
                if (buffer == NULL) {
-                       command_print(CMD_CTX,
+                       command_print(CMD,
                                                  "error allocating buffer for section (%d bytes)",
                                                  (int)(image.sections[i].size));
                        retval = ERROR_FAIL;
@@ -3351,7 +3667,7 @@ COMMAND_HANDLER(handle_load_image_command)
                uint32_t offset = 0;
                uint32_t length = buf_cnt;
 
-               /* DANGER!!! beware of unsigned comparision here!!! */
+               /* DANGER!!! beware of unsigned comparison here!!! */
 
                if ((image.sections[i].base_address + buf_cnt >= min_address) &&
                                (image.sections[i].base_address < max_address)) {
@@ -3372,7 +3688,7 @@ COMMAND_HANDLER(handle_load_image_command)
                                break;
                        }
                        image_size += length;
-                       command_print(CMD_CTX, "%u bytes written at address " TARGET_ADDR_FMT "",
+                       command_print(CMD, "%u bytes written at address " TARGET_ADDR_FMT "",
                                        (unsigned int)length,
                                        image.sections[i].base_address + offset);
                }
@@ -3381,7 +3697,7 @@ COMMAND_HANDLER(handle_load_image_command)
        }
 
        if ((ERROR_OK == retval) && (duration_measure(&bench) == ERROR_OK)) {
-               command_print(CMD_CTX, "downloaded %" PRIu32 " bytes "
+               command_print(CMD, "downloaded %" PRIu32 " bytes "
                                "in %fs (%0.3f KiB/s)", image_size,
                                duration_elapsed(&bench), duration_kbps(&bench, image_size));
        }
@@ -3442,7 +3758,7 @@ COMMAND_HANDLER(handle_dump_image_command)
                retval = fileio_size(fileio, &filesize);
                if (retval != ERROR_OK)
                        return retval;
-               command_print(CMD_CTX,
+               command_print(CMD,
                                "dumped %zu bytes in %fs (%0.3f KiB/s)", filesize,
                                duration_elapsed(&bench), duration_kbps(&bench, filesize));
        }
@@ -3465,7 +3781,6 @@ static COMMAND_HELPER(handle_verify_image_command_internal, enum verify_mode ver
        uint8_t *buffer;
        size_t buf_cnt;
        uint32_t image_size;
-       int i;
        int retval;
        uint32_t checksum = 0;
        uint32_t mem_checksum = 0;
@@ -3489,13 +3804,13 @@ static COMMAND_HELPER(handle_verify_image_command_internal, enum verify_mode ver
                target_addr_t addr;
                COMMAND_PARSE_ADDRESS(CMD_ARGV[1], addr);
                image.base_address = addr;
-               image.base_address_set = 1;
+               image.base_address_set = true;
        } else {
-               image.base_address_set = 0;
+               image.base_address_set = false;
                image.base_address = 0x0;
        }
 
-       image.start_address_set = 0;
+       image.start_address_set = false;
 
        retval = image_open(&image, CMD_ARGV[0], (CMD_ARGC == 3) ? CMD_ARGV[2] : NULL);
        if (retval != ERROR_OK)
@@ -3504,12 +3819,12 @@ static COMMAND_HELPER(handle_verify_image_command_internal, enum verify_mode ver
        image_size = 0x0;
        int diffs = 0;
        retval = ERROR_OK;
-       for (i = 0; i < image.num_sections; i++) {
+       for (unsigned int i = 0; i < image.num_sections; i++) {
                buffer = malloc(image.sections[i].size);
                if (buffer == NULL) {
-                       command_print(CMD_CTX,
-                                       "error allocating buffer for section (%d bytes)",
-                                       (int)(image.sections[i].size));
+                       command_print(CMD,
+                                       "error allocating buffer for section (%" PRIu32 " bytes)",
+                                       image.sections[i].size);
                        break;
                }
                retval = image_read_section(&image, i, 0x0, image.sections[i].size, buffer, &buf_cnt);
@@ -3546,26 +3861,19 @@ static COMMAND_HELPER(handle_verify_image_command_internal, enum verify_mode ver
 
                                data = malloc(buf_cnt);
 
-                               /* Can we use 32bit word accesses? */
-                               int size = 1;
-                               int count = buf_cnt;
-                               if ((count % 4) == 0) {
-                                       size *= 4;
-                                       count /= 4;
-                               }
-                               retval = target_read_memory(target, image.sections[i].base_address, size, count, data);
+                               retval = target_read_buffer(target, image.sections[i].base_address, buf_cnt, data);
                                if (retval == ERROR_OK) {
                                        uint32_t t;
                                        for (t = 0; t < buf_cnt; t++) {
                                                if (data[t] != buffer[t]) {
-                                                       command_print(CMD_CTX,
+                                                       command_print(CMD,
                                                                                  "diff %d address 0x%08x. Was 0x%02x instead of 0x%02x",
                                                                                  diffs,
                                                                                  (unsigned)(t + image.sections[i].base_address),
                                                                                  data[t],
                                                                                  buffer[t]);
                                                        if (diffs++ >= 127) {
-                                                               command_print(CMD_CTX, "More than 128 errors, the rest are not printed.");
+                                                               command_print(CMD, "More than 128 errors, the rest are not printed.");
                                                                free(data);
                                                                free(buffer);
                                                                goto done;
@@ -3577,7 +3885,7 @@ static COMMAND_HELPER(handle_verify_image_command_internal, enum verify_mode ver
                                free(data);
                        }
                } else {
-                       command_print(CMD_CTX, "address " TARGET_ADDR_FMT " length 0x%08zx",
+                       command_print(CMD, "address " TARGET_ADDR_FMT " length 0x%08zx",
                                                  image.sections[i].base_address,
                                                  buf_cnt);
                }
@@ -3586,12 +3894,12 @@ static COMMAND_HELPER(handle_verify_image_command_internal, enum verify_mode ver
                image_size += buf_cnt;
        }
        if (diffs > 0)
-               command_print(CMD_CTX, "No more differences found.");
+               command_print(CMD, "No more differences found.");
 done:
        if (diffs > 0)
                retval = ERROR_FAIL;
        if ((ERROR_OK == retval) && (duration_measure(&bench) == ERROR_OK)) {
-               command_print(CMD_CTX, "verified %" PRIu32 " bytes "
+               command_print(CMD, "verified %" PRIu32 " bytes "
                                "in %fs (%0.3f KiB/s)", image_size,
                                duration_elapsed(&bench), duration_kbps(&bench, image_size));
        }
@@ -3616,32 +3924,32 @@ COMMAND_HANDLER(handle_test_image_command)
        return CALL_COMMAND_HANDLER(handle_verify_image_command_internal, IMAGE_TEST);
 }
 
-static int handle_bp_command_list(struct command_context *cmd_ctx)
+static int handle_bp_command_list(struct command_invocation *cmd)
 {
-       struct target *target = get_current_target(cmd_ctx);
+       struct target *target = get_current_target(cmd->ctx);
        struct breakpoint *breakpoint = target->breakpoints;
        while (breakpoint) {
                if (breakpoint->type == BKPT_SOFT) {
-                       char *buf = buf_to_str(breakpoint->orig_instr,
-                                       breakpoint->length, 16);
-                       command_print(cmd_ctx, "IVA breakpoint: " TARGET_ADDR_FMT ", 0x%x, %i, 0x%s",
+                       char *buf = buf_to_hex_str(breakpoint->orig_instr,
+                                       breakpoint->length);
+                       command_print(cmd, "IVA breakpoint: " TARGET_ADDR_FMT ", 0x%x, %i, 0x%s",
                                        breakpoint->address,
                                        breakpoint->length,
                                        breakpoint->set, buf);
                        free(buf);
                } else {
                        if ((breakpoint->address == 0) && (breakpoint->asid != 0))
-                               command_print(cmd_ctx, "Context breakpoint: 0x%8.8" PRIx32 ", 0x%x, %i",
+                               command_print(cmd, "Context breakpoint: 0x%8.8" PRIx32 ", 0x%x, %i",
                                                        breakpoint->asid,
                                                        breakpoint->length, breakpoint->set);
                        else if ((breakpoint->address != 0) && (breakpoint->asid != 0)) {
-                               command_print(cmd_ctx, "Hybrid breakpoint(IVA): " TARGET_ADDR_FMT ", 0x%x, %i",
+                               command_print(cmd, "Hybrid breakpoint(IVA): " TARGET_ADDR_FMT ", 0x%x, %i",
                                                        breakpoint->address,
                                                        breakpoint->length, breakpoint->set);
-                               command_print(cmd_ctx, "\t|--->linked with ContextID: 0x%8.8" PRIx32,
+                               command_print(cmd, "\t|--->linked with ContextID: 0x%8.8" PRIx32,
                                                        breakpoint->asid);
                        } else
-                               command_print(cmd_ctx, "Breakpoint(IVA): " TARGET_ADDR_FMT ", 0x%x, %i",
+                               command_print(cmd, "Breakpoint(IVA): " TARGET_ADDR_FMT ", 0x%x, %i",
                                                        breakpoint->address,
                                                        breakpoint->length, breakpoint->set);
                }
@@ -3651,46 +3959,39 @@ static int handle_bp_command_list(struct command_context *cmd_ctx)
        return ERROR_OK;
 }
 
-static int handle_bp_command_set(struct command_context *cmd_ctx,
+static int handle_bp_command_set(struct command_invocation *cmd,
                target_addr_t addr, uint32_t asid, uint32_t length, int hw)
 {
-       struct target *target = get_current_target(cmd_ctx);
+       struct target *target = get_current_target(cmd->ctx);
        int retval;
 
        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)
-                       command_print(cmd_ctx, "breakpoint set at " TARGET_ADDR_FMT "", addr);
-               else {
-                       LOG_ERROR("Failure setting breakpoint, the same address(IVA) is already used");
-                       return retval;
-               }
+                       command_print(cmd, "breakpoint set at " TARGET_ADDR_FMT "", addr);
+
        } else if (addr == 0) {
                if (target->type->add_context_breakpoint == NULL) {
-                       LOG_WARNING("Context breakpoint not available");
-                       return ERROR_OK;
+                       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)
-                       command_print(cmd_ctx, "Context breakpoint set at 0x%8.8" PRIx32 "", asid);
-               else {
-                       LOG_ERROR("Failure setting breakpoint, the same address(CONTEXTID) is already used");
-                       return retval;
-               }
+                       command_print(cmd, "Context breakpoint set at 0x%8.8" PRIx32 "", asid);
+
        } else {
                if (target->type->add_hybrid_breakpoint == NULL) {
-                       LOG_WARNING("Hybrid breakpoint not available");
-                       return ERROR_OK;
+                       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)
-                       command_print(cmd_ctx, "Hybrid breakpoint set at 0x%8.8" PRIx32 "", asid);
-               else {
-                       LOG_ERROR("Failure setting breakpoint, the same address is already used");
-                       return retval;
-               }
+                       command_print(cmd, "Hybrid breakpoint set at 0x%8.8" PRIx32 "", asid);
        }
-       return ERROR_OK;
+       return retval;
 }
 
 COMMAND_HANDLER(handle_bp_command)
@@ -3702,13 +4003,13 @@ COMMAND_HANDLER(handle_bp_command)
 
        switch (CMD_ARGC) {
                case 0:
-                       return handle_bp_command_list(CMD_CTX);
+                       return handle_bp_command_list(CMD);
 
                case 2:
                        asid = 0;
                        COMMAND_PARSE_ADDRESS(CMD_ARGV[0], addr);
                        COMMAND_PARSE_NUMBER(u32, CMD_ARGV[1], length);
-                       return handle_bp_command_set(CMD_CTX, addr, asid, length, hw);
+                       return handle_bp_command_set(CMD, addr, asid, length, hw);
 
                case 3:
                        if (strcmp(CMD_ARGV[2], "hw") == 0) {
@@ -3716,13 +4017,13 @@ COMMAND_HANDLER(handle_bp_command)
                                COMMAND_PARSE_ADDRESS(CMD_ARGV[0], addr);
                                COMMAND_PARSE_NUMBER(u32, CMD_ARGV[1], length);
                                asid = 0;
-                               return handle_bp_command_set(CMD_CTX, addr, asid, length, hw);
+                               return handle_bp_command_set(CMD, addr, asid, length, hw);
                        } else if (strcmp(CMD_ARGV[2], "hw_ctx") == 0) {
                                hw = BKPT_HARD;
                                COMMAND_PARSE_NUMBER(u32, CMD_ARGV[0], asid);
                                COMMAND_PARSE_NUMBER(u32, CMD_ARGV[1], length);
                                addr = 0;
-                               return handle_bp_command_set(CMD_CTX, addr, asid, length, hw);
+                               return handle_bp_command_set(CMD, addr, asid, length, hw);
                        }
                        /* fallthrough */
                case 4:
@@ -3730,7 +4031,7 @@ COMMAND_HANDLER(handle_bp_command)
                        COMMAND_PARSE_ADDRESS(CMD_ARGV[0], addr);
                        COMMAND_PARSE_NUMBER(u32, CMD_ARGV[1], asid);
                        COMMAND_PARSE_NUMBER(u32, CMD_ARGV[2], length);
-                       return handle_bp_command_set(CMD_CTX, addr, asid, length, hw);
+                       return handle_bp_command_set(CMD, addr, asid, length, hw);
 
                default:
                        return ERROR_COMMAND_SYNTAX_ERROR;
@@ -3742,11 +4043,16 @@ COMMAND_HANDLER(handle_rbp_command)
        if (CMD_ARGC != 1)
                return ERROR_COMMAND_SYNTAX_ERROR;
 
-       target_addr_t addr;
-       COMMAND_PARSE_ADDRESS(CMD_ARGV[0], addr);
+       struct target *target = get_current_target(CMD_CTX);
+
+       if (!strcmp(CMD_ARGV[0], "all")) {
+               breakpoint_remove_all(target);
+       } else {
+               target_addr_t addr;
+               COMMAND_PARSE_ADDRESS(CMD_ARGV[0], addr);
 
-       struct target *target = get_current_target(CMD_CTX);
-       breakpoint_remove(target, addr);
+               breakpoint_remove(target, addr);
+       }
 
        return ERROR_OK;
 }
@@ -3759,7 +4065,7 @@ COMMAND_HANDLER(handle_wp_command)
                struct watchpoint *watchpoint = target->watchpoints;
 
                while (watchpoint) {
-                       command_print(CMD_CTX, "address: " TARGET_ADDR_FMT
+                       command_print(CMD, "address: " TARGET_ADDR_FMT
                                        ", len: 0x%8.8" PRIx32
                                        ", r/w/a: %i, value: 0x%8.8" PRIx32
                                        ", mask: 0x%8.8" PRIx32,
@@ -3774,7 +4080,7 @@ COMMAND_HANDLER(handle_wp_command)
        }
 
        enum watchpoint_rw type = WPT_ACCESS;
-       uint32_t addr = 0;
+       target_addr_t addr = 0;
        uint32_t length = 0;
        uint32_t data_value = 0x0;
        uint32_t data_mask = 0xffffffff;
@@ -3804,7 +4110,7 @@ COMMAND_HANDLER(handle_wp_command)
                /* fall through */
        case 2:
                COMMAND_PARSE_NUMBER(u32, CMD_ARGV[1], length);
-               COMMAND_PARSE_NUMBER(u32, CMD_ARGV[0], addr);
+               COMMAND_PARSE_ADDRESS(CMD_ARGV[0], addr);
                break;
 
        default:
@@ -3824,8 +4130,8 @@ COMMAND_HANDLER(handle_rwp_command)
        if (CMD_ARGC != 1)
                return ERROR_COMMAND_SYNTAX_ERROR;
 
-       uint32_t addr;
-       COMMAND_PARSE_NUMBER(u32, CMD_ARGV[0], addr);
+       target_addr_t addr;
+       COMMAND_PARSE_ADDRESS(CMD_ARGV[0], addr);
 
        struct target *target = get_current_target(CMD_CTX);
        watchpoint_remove(target, addr);
@@ -3851,7 +4157,7 @@ COMMAND_HANDLER(handle_virt2phys_command)
        struct target *target = get_current_target(CMD_CTX);
        int retval = target->type->virt2phys(target, va, &pa);
        if (retval == ERROR_OK)
-               command_print(CMD_CTX, "Physical address " TARGET_ADDR_FMT "", pa);
+               command_print(CMD, "Physical address " TARGET_ADDR_FMT "", pa);
 
        return retval;
 }
@@ -3989,6 +4295,7 @@ COMMAND_HANDLER(handle_profile_command)
        uint32_t offset;
        uint32_t num_of_samples;
        int retval = ERROR_OK;
+       bool halted_before_profiling = target->state == TARGET_HALTED;
 
        COMMAND_PARSE_NUMBER(u32, CMD_ARGV[0], offset);
 
@@ -4019,12 +4326,23 @@ COMMAND_HANDLER(handle_profile_command)
                free(samples);
                return retval;
        }
-       if (target->state == TARGET_RUNNING) {
+
+       if (target->state == TARGET_RUNNING && halted_before_profiling) {
+               /* The target was halted before we started and is running now. Halt it,
+                * for consistency. */
                retval = target_halt(target);
                if (retval != ERROR_OK) {
                        free(samples);
                        return retval;
                }
+       } else if (target->state == TARGET_HALTED && !halted_before_profiling) {
+               /* The target was running before we started and is halted now. Resume
+                * it, for consistency. */
+               retval = target_resume(target, 1, 0, 0, 0);
+               if (retval != ERROR_OK) {
+                       free(samples);
+                       return retval;
+               }
        }
 
        retval = target_poll(target);
@@ -4044,7 +4362,7 @@ COMMAND_HANDLER(handle_profile_command)
 
        write_gmon(samples, num_of_samples, CMD_ARGV[1],
                   with_range, start_address, end_address, target, duration_ms);
-       command_print(CMD_CTX, "Wrote %s", CMD_ARGV[1]);
+       command_print(CMD, "Wrote %s", CMD_ARGV[1]);
 
        free(samples);
        return retval;
@@ -4113,8 +4431,9 @@ static int target_mem2array(Jim_Interp *interp, struct target *target, int argc,
         * argv[3] = memory address
         * argv[4] = count of times to read
         */
+
        if (argc < 4 || argc > 5) {
-               Jim_WrongNumArgs(interp, 1, argv, "varname width addr nelems [phys]");
+               Jim_WrongNumArgs(interp, 0, argv, "varname width addr nelems [phys]");
                return JIM_ERR;
        }
        varname = Jim_GetString(argv[0], &len);
@@ -4180,7 +4499,7 @@ static int target_mem2array(Jim_Interp *interp, struct target *target, int argc,
        } else {
                char buf[100];
                Jim_SetResult(interp, Jim_NewEmptyStringObj(interp));
-               sprintf(buf, "mem2array address: 0x%08" PRIx32 " is not aligned for %" PRId32 " byte reads",
+               sprintf(buf, "mem2array address: 0x%08" PRIx32 " is not aligned for %" PRIu32 " byte reads",
                                addr,
                                width);
                Jim_AppendStrings(interp, Jim_GetResult(interp), buf, NULL);
@@ -4212,7 +4531,7 @@ static int target_mem2array(Jim_Interp *interp, struct target *target, int argc,
                        retval = target_read_memory(target, addr, width, count, buffer);
                if (retval != ERROR_OK) {
                        /* BOO !*/
-                       LOG_ERROR("mem2array: Read @ 0x%08" PRIx32 ", w=%" PRId32 ", cnt=%" PRId32 ", failed",
+                       LOG_ERROR("mem2array: Read @ 0x%08" PRIx32 ", w=%" PRIu32 ", cnt=%" PRIu32 ", failed",
                                          addr,
                                          width,
                                          count);
@@ -4386,7 +4705,7 @@ static int target_array2mem(Jim_Interp *interp, struct target *target,
        } else {
                char buf[100];
                Jim_SetResult(interp, Jim_NewEmptyStringObj(interp));
-               sprintf(buf, "array2mem address: 0x%08" PRIx32 " is not aligned for %" PRId32 " byte reads",
+               sprintf(buf, "array2mem address: 0x%08" PRIx32 " is not aligned for %" PRIu32 " byte reads",
                                addr,
                                width);
                Jim_AppendStrings(interp, Jim_GetResult(interp), buf, NULL);
@@ -4435,7 +4754,7 @@ static int target_array2mem(Jim_Interp *interp, struct target *target,
                        retval = target_write_memory(target, addr, width, count, buffer);
                if (retval != ERROR_OK) {
                        /* BOO !*/
-                       LOG_ERROR("array2mem: Write @ 0x%08" PRIx32 ", w=%" PRId32 ", cnt=%" PRId32 ", failed",
+                       LOG_ERROR("array2mem: Write @ 0x%08" PRIx32 ", w=%" PRIu32 ", cnt=%" PRIu32 ", failed",
                                          addr,
                                          width,
                                          count);
@@ -4460,6 +4779,7 @@ static int target_array2mem(Jim_Interp *interp, struct target *target,
 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) {
                if (teap->event == e) {
@@ -4468,7 +4788,7 @@ void target_handle_event(struct target *target, enum target_event e)
                                           target_name(target),
                                           target_type_name(target),
                                           e,
-                                          Jim_Nvp_value2name_simple(nvp_target_event, e)->name,
+                                          jim_nvp_value2name_simple(nvp_target_event, e)->name,
                                           Jim_GetString(teap->body, NULL));
 
                        /* Override current target by the target an event
@@ -4479,12 +4799,25 @@ void target_handle_event(struct target *target, enum target_event e)
                        struct target *saved_target_override = cmd_ctx->current_target_override;
                        cmd_ctx->current_target_override = target;
 
-                       if (Jim_EvalObj(teap->interp, teap->body) != JIM_OK) {
-                               Jim_MakeErrorMessage(teap->interp);
-                               command_print(NULL, "%s\n", Jim_GetString(Jim_GetResult(teap->interp), NULL));
-                       }
+                       retval = Jim_EvalObj(teap->interp, teap->body);
 
                        cmd_ctx->current_target_override = saved_target_override;
+
+                       if (retval == ERROR_COMMAND_CLOSE_CONNECTION)
+                               return;
+
+                       if (retval == JIM_RETURN)
+                               retval = teap->interp->returnCode;
+
+                       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_name(target),
+                                                 Jim_GetString(Jim_GetResult(teap->interp), NULL));
+                               /* clean both error code and stacktrace before return */
+                               Jim_Eval(teap->interp, "error \"\" \"\"");
+                       }
                }
        }
 }
@@ -4516,27 +4849,31 @@ enum target_cfg_param {
        TCFG_DBGBASE,
        TCFG_RTOS,
        TCFG_DEFER_EXAMINE,
+       TCFG_GDB_PORT,
+       TCFG_GDB_MAX_CONNECTIONS,
 };
 
-static Jim_Nvp nvp_config_opts[] = {
+static struct jim_nvp nvp_config_opts[] = {
        { .name = "-type",             .value = TCFG_TYPE },
        { .name = "-event",            .value = TCFG_EVENT },
        { .name = "-work-area-virt",   .value = TCFG_WORK_AREA_VIRT },
        { .name = "-work-area-phys",   .value = TCFG_WORK_AREA_PHYS },
        { .name = "-work-area-size",   .value = TCFG_WORK_AREA_SIZE },
        { .name = "-work-area-backup", .value = TCFG_WORK_AREA_BACKUP },
-       { .name = "-endian" ,          .value = TCFG_ENDIAN },
+       { .name = "-endian"          .value = TCFG_ENDIAN },
        { .name = "-coreid",           .value = TCFG_COREID },
        { .name = "-chain-position",   .value = TCFG_CHAIN_POSITION },
        { .name = "-dbgbase",          .value = TCFG_DBGBASE },
        { .name = "-rtos",             .value = TCFG_RTOS },
        { .name = "-defer-examine",    .value = TCFG_DEFER_EXAMINE },
+       { .name = "-gdb-port",         .value = TCFG_GDB_PORT },
+       { .name = "-gdb-max-connections",   .value = TCFG_GDB_MAX_CONNECTIONS },
        { .name = NULL, .value = -1 }
 };
 
-static int target_configure(Jim_GetOptInfo *goi, struct target *target)
+static int target_configure(struct jim_getopt_info *goi, struct target *target)
 {
-       Jim_Nvp *n;
+       struct jim_nvp *n;
        Jim_Obj *o;
        jim_wide w;
        int e;
@@ -4544,7 +4881,7 @@ static int target_configure(Jim_GetOptInfo *goi, struct target *target)
        /* parse config or cget options ... */
        while (goi->argc > 0) {
                Jim_SetEmptyResult(goi->interp);
-               /* Jim_GetOpt_Debug(goi); */
+               /* jim_getopt_debug(goi); */
 
                if (target->type->target_jim_configure) {
                        /* target defines a configure function */
@@ -4560,14 +4897,14 @@ static int target_configure(Jim_GetOptInfo *goi, struct target *target)
                        }
                        /* otherwise we 'continue' below */
                }
-               e = Jim_GetOpt_Nvp(goi, nvp_config_opts, &n);
+               e = jim_getopt_nvp(goi, nvp_config_opts, &n);
                if (e != JIM_OK) {
-                       Jim_GetOpt_NvpUnknown(goi, nvp_config_opts, 0);
+                       jim_getopt_nvp_unknown(goi, nvp_config_opts, 0);
                        return e;
                }
                switch (n->value) {
                case TCFG_TYPE:
-                       /* not setable */
+                       /* not settable */
                        if (goi->isconfigure) {
                                Jim_SetResultFormatted(goi->interp,
                                                "not settable: %s", n->name);
@@ -4591,9 +4928,9 @@ no_params:
                                return JIM_ERR;
                        }
 
-                       e = Jim_GetOpt_Nvp(goi, nvp_target_event, &n);
+                       e = jim_getopt_nvp(goi, nvp_target_event, &n);
                        if (e != JIM_OK) {
-                               Jim_GetOpt_NvpUnknown(goi, nvp_target_event, 1);
+                               jim_getopt_nvp_unknown(goi, nvp_target_event, 1);
                                return e;
                        }
 
@@ -4621,6 +4958,11 @@ no_params:
                                }
 
                                if (goi->isconfigure) {
+                                       /* START_DEPRECATED_TPIU */
+                                       if (n->value == TARGET_EVENT_TRACE_CONFIG)
+                                               LOG_INFO("DEPRECATED target event %s", n->name);
+                                       /* END_DEPRECATED_TPIU */
+
                                        bool replace = true;
                                        if (teap == NULL) {
                                                /* create new */
@@ -4629,7 +4971,7 @@ no_params:
                                        }
                                        teap->event = n->value;
                                        teap->interp = goi->interp;
-                                       Jim_GetOpt_Obj(goi, &o);
+                                       jim_getopt_obj(goi, &o);
                                        if (teap->body)
                                                Jim_DecrRefCount(teap->interp, teap->body);
                                        teap->body  = Jim_DuplicateObj(goi->interp, o);
@@ -4665,7 +5007,7 @@ no_params:
                case TCFG_WORK_AREA_VIRT:
                        if (goi->isconfigure) {
                                target_free_all_working_areas(target);
-                               e = Jim_GetOpt_Wide(goi, &w);
+                               e = jim_getopt_wide(goi, &w);
                                if (e != JIM_OK)
                                        return e;
                                target->working_area_virt = w;
@@ -4681,7 +5023,7 @@ no_params:
                case TCFG_WORK_AREA_PHYS:
                        if (goi->isconfigure) {
                                target_free_all_working_areas(target);
-                               e = Jim_GetOpt_Wide(goi, &w);
+                               e = jim_getopt_wide(goi, &w);
                                if (e != JIM_OK)
                                        return e;
                                target->working_area_phys = w;
@@ -4697,7 +5039,7 @@ no_params:
                case TCFG_WORK_AREA_SIZE:
                        if (goi->isconfigure) {
                                target_free_all_working_areas(target);
-                               e = Jim_GetOpt_Wide(goi, &w);
+                               e = jim_getopt_wide(goi, &w);
                                if (e != JIM_OK)
                                        return e;
                                target->working_area_size = w;
@@ -4712,7 +5054,7 @@ no_params:
                case TCFG_WORK_AREA_BACKUP:
                        if (goi->isconfigure) {
                                target_free_all_working_areas(target);
-                               e = Jim_GetOpt_Wide(goi, &w);
+                               e = jim_getopt_wide(goi, &w);
                                if (e != JIM_OK)
                                        return e;
                                /* make this exactly 1 or 0 */
@@ -4728,9 +5070,9 @@ no_params:
 
                case TCFG_ENDIAN:
                        if (goi->isconfigure) {
-                               e = Jim_GetOpt_Nvp(goi, nvp_target_endian, &n);
+                               e = jim_getopt_nvp(goi, nvp_target_endian, &n);
                                if (e != JIM_OK) {
-                                       Jim_GetOpt_NvpUnknown(goi, nvp_target_endian, 1);
+                                       jim_getopt_nvp_unknown(goi, nvp_target_endian, 1);
                                        return e;
                                }
                                target->endianness = n->value;
@@ -4738,10 +5080,10 @@ no_params:
                                if (goi->argc != 0)
                                        goto no_params;
                        }
-                       n = Jim_Nvp_value2name_simple(nvp_target_endian, target->endianness);
+                       n = jim_nvp_value2name_simple(nvp_target_endian, target->endianness);
                        if (n->name == NULL) {
                                target->endianness = TARGET_LITTLE_ENDIAN;
-                               n = Jim_Nvp_value2name_simple(nvp_target_endian, target->endianness);
+                               n = jim_nvp_value2name_simple(nvp_target_endian, target->endianness);
                        }
                        Jim_SetResultString(goi->interp, n->name, -1);
                        /* loop for more */
@@ -4749,7 +5091,7 @@ no_params:
 
                case TCFG_COREID:
                        if (goi->isconfigure) {
-                               e = Jim_GetOpt_Wide(goi, &w);
+                               e = jim_getopt_wide(goi, &w);
                                if (e != JIM_OK)
                                        return e;
                                target->coreid = (int32_t)w;
@@ -4757,7 +5099,7 @@ no_params:
                                if (goi->argc != 0)
                                        goto no_params;
                        }
-                       Jim_SetResult(goi->interp, Jim_NewIntObj(goi->interp, target->working_area_size));
+                       Jim_SetResult(goi->interp, Jim_NewIntObj(goi->interp, target->coreid));
                        /* loop for more */
                        break;
 
@@ -4765,15 +5107,22 @@ no_params:
                        if (goi->isconfigure) {
                                Jim_Obj *o_t;
                                struct jtag_tap *tap;
+
+                               if (target->has_dap) {
+                                       Jim_SetResultString(goi->interp,
+                                               "target requires -dap parameter instead of -chain-position!", -1);
+                                       return JIM_ERR;
+                               }
+
                                target_free_all_working_areas(target);
-                               e = Jim_GetOpt_Obj(goi, &o_t);
+                               e = jim_getopt_obj(goi, &o_t);
                                if (e != JIM_OK)
                                        return e;
                                tap = jtag_tap_by_jim_obj(goi->interp, o_t);
                                if (tap == NULL)
                                        return JIM_ERR;
-                               /* make this exactly 1 or 0 */
                                target->tap = tap;
+                               target->tap_configured = true;
                        } else {
                                if (goi->argc != 0)
                                        goto no_params;
@@ -4783,7 +5132,7 @@ no_params:
                        break;
                case TCFG_DBGBASE:
                        if (goi->isconfigure) {
-                               e = Jim_GetOpt_Wide(goi, &w);
+                               e = jim_getopt_wide(goi, &w);
                                if (e != JIM_OK)
                                        return e;
                                target->dbgbase = (uint32_t)w;
@@ -4811,6 +5160,46 @@ no_params:
                        /* loop for more */
                        break;
 
+               case TCFG_GDB_PORT:
+                       if (goi->isconfigure) {
+                               struct command_context *cmd_ctx = current_command_context(goi->interp);
+                               if (cmd_ctx->mode != COMMAND_CONFIG) {
+                                       Jim_SetResultString(goi->interp, "-gdb-port must be configured before 'init'", -1);
+                                       return JIM_ERR;
+                               }
+
+                               const char *s;
+                               e = jim_getopt_string(goi, &s, NULL);
+                               if (e != JIM_OK)
+                                       return e;
+                               free(target->gdb_port_override);
+                               target->gdb_port_override = strdup(s);
+                       } else {
+                               if (goi->argc != 0)
+                                       goto no_params;
+                       }
+                       Jim_SetResultString(goi->interp, target->gdb_port_override ? target->gdb_port_override : "undefined", -1);
+                       /* loop for more */
+                       break;
+
+               case TCFG_GDB_MAX_CONNECTIONS:
+                       if (goi->isconfigure) {
+                               struct command_context *cmd_ctx = current_command_context(goi->interp);
+                               if (cmd_ctx->mode != COMMAND_CONFIG) {
+                                       Jim_SetResultString(goi->interp, "-gdb-max-connections must be configured before 'init'", -1);
+                                       return JIM_ERR;
+                               }
+
+                               e = jim_getopt_wide(goi, &w);
+                               if (e != JIM_OK)
+                                       return e;
+                               target->gdb_max_connections = (w < 0) ? CONNECTION_LIMIT_UNLIMITED : (int)w;
+                       } else {
+                               if (goi->argc != 0)
+                                       goto no_params;
+                       }
+                       Jim_SetResult(goi->interp, Jim_NewIntObj(goi->interp, target->gdb_max_connections));
+                       break;
                }
        } /* while (goi->argc) */
 
@@ -4821,252 +5210,37 @@ no_params:
 
 static int jim_target_configure(Jim_Interp *interp, int argc, Jim_Obj * const *argv)
 {
-       Jim_GetOptInfo goi;
+       struct command *c = jim_to_command(interp);
+       struct jim_getopt_info goi;
 
-       Jim_GetOpt_Setup(&goi, interp, argc - 1, argv + 1);
-       goi.isconfigure = !strcmp(Jim_GetString(argv[0], NULL), "configure");
+       jim_getopt_setup(&goi, interp, argc - 1, argv + 1);
+       goi.isconfigure = !strcmp(c->name, "configure");
        if (goi.argc < 1) {
                Jim_WrongNumArgs(goi.interp, goi.argc, goi.argv,
                                 "missing: -option ...");
                return JIM_ERR;
        }
-       struct target *target = Jim_CmdPrivData(goi.interp);
+       struct command_context *cmd_ctx = current_command_context(interp);
+       assert(cmd_ctx);
+       struct target *target = get_current_target(cmd_ctx);
        return target_configure(&goi, target);
 }
 
-static int jim_target_mw(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
-{
-       const char *cmd_name = Jim_GetString(argv[0], NULL);
-
-       Jim_GetOptInfo goi;
-       Jim_GetOpt_Setup(&goi, interp, argc - 1, argv + 1);
-
-       if (goi.argc < 2 || goi.argc > 4) {
-               Jim_SetResultFormatted(goi.interp,
-                               "usage: %s [phys] <address> <data> [<count>]", cmd_name);
-               return JIM_ERR;
-       }
-
-       target_write_fn fn;
-       fn = target_write_memory;
-
-       int e;
-       if (strcmp(Jim_GetString(argv[1], NULL), "phys") == 0) {
-               /* consume it */
-               struct Jim_Obj *obj;
-               e = Jim_GetOpt_Obj(&goi, &obj);
-               if (e != JIM_OK)
-                       return e;
-
-               fn = target_write_phys_memory;
-       }
-
-       jim_wide a;
-       e = Jim_GetOpt_Wide(&goi, &a);
-       if (e != JIM_OK)
-               return e;
-
-       jim_wide b;
-       e = Jim_GetOpt_Wide(&goi, &b);
-       if (e != JIM_OK)
-               return e;
-
-       jim_wide c = 1;
-       if (goi.argc == 1) {
-               e = Jim_GetOpt_Wide(&goi, &c);
-               if (e != JIM_OK)
-                       return e;
-       }
-
-       /* all args must be consumed */
-       if (goi.argc != 0)
-               return JIM_ERR;
-
-       struct target *target = Jim_CmdPrivData(goi.interp);
-       unsigned data_size;
-       if (strcasecmp(cmd_name, "mww") == 0)
-               data_size = 4;
-       else if (strcasecmp(cmd_name, "mwh") == 0)
-               data_size = 2;
-       else if (strcasecmp(cmd_name, "mwb") == 0)
-               data_size = 1;
-       else {
-               LOG_ERROR("command '%s' unknown: ", cmd_name);
-               return JIM_ERR;
-       }
-
-       return (target_fill_mem(target, a, fn, data_size, b, c) == ERROR_OK) ? JIM_OK : JIM_ERR;
-}
-
-/**
-*  @brief Reads an array of words/halfwords/bytes from target memory starting at specified address.
-*
-*  Usage: mdw [phys] <address> [<count>] - for 32 bit reads
-*         mdh [phys] <address> [<count>] - for 16 bit reads
-*         mdb [phys] <address> [<count>] - for  8 bit reads
-*
-*  Count defaults to 1.
-*
-*  Calls target_read_memory or target_read_phys_memory depending on
-*  the presence of the "phys" argument
-*  Reads the target memory in blocks of max. 32 bytes, and returns an array of ints formatted
-*  to int representation in base16.
-*  Also outputs read data in a human readable form using command_print
-*
-*  @param phys if present target_read_phys_memory will be used instead of target_read_memory
-*  @param address address where to start the read. May be specified in decimal or hex using the standard "0x" prefix
-*  @param count optional count parameter to read an array of values. If not specified, defaults to 1.
-*  @returns:  JIM_ERR on error or JIM_OK on success and sets the result string to an array of ascii formatted numbers
-*  on success, with [<count>] number of elements.
-*
-*  In case of little endian target:
-*      Example1: "mdw 0x00000000"  returns "10123456"
-*      Exmaple2: "mdh 0x00000000 1" returns "3456"
-*      Example3: "mdb 0x00000000" returns "56"
-*      Example4: "mdh 0x00000000 2" returns "3456 1012"
-*      Example5: "mdb 0x00000000 3" returns "56 34 12"
-**/
-static int jim_target_md(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
-{
-       const char *cmd_name = Jim_GetString(argv[0], NULL);
-
-       Jim_GetOptInfo goi;
-       Jim_GetOpt_Setup(&goi, interp, argc - 1, argv + 1);
-
-       if ((goi.argc < 1) || (goi.argc > 3)) {
-               Jim_SetResultFormatted(goi.interp,
-                               "usage: %s [phys] <address> [<count>]", cmd_name);
-               return JIM_ERR;
-       }
-
-       int (*fn)(struct target *target,
-                       target_addr_t address, uint32_t size, uint32_t count, uint8_t *buffer);
-       fn = target_read_memory;
-
-       int e;
-       if (strcmp(Jim_GetString(argv[1], NULL), "phys") == 0) {
-               /* consume it */
-               struct Jim_Obj *obj;
-               e = Jim_GetOpt_Obj(&goi, &obj);
-               if (e != JIM_OK)
-                       return e;
-
-               fn = target_read_phys_memory;
-       }
-
-       /* Read address parameter */
-       jim_wide addr;
-       e = Jim_GetOpt_Wide(&goi, &addr);
-       if (e != JIM_OK)
-               return JIM_ERR;
-
-       /* If next parameter exists, read it out as the count parameter, if not, set it to 1 (default) */
-       jim_wide count;
-       if (goi.argc == 1) {
-               e = Jim_GetOpt_Wide(&goi, &count);
-               if (e != JIM_OK)
-                       return JIM_ERR;
-       } else
-               count = 1;
-
-       /* all args must be consumed */
-       if (goi.argc != 0)
-               return JIM_ERR;
-
-       jim_wide dwidth = 1; /* shut up gcc */
-       if (strcasecmp(cmd_name, "mdw") == 0)
-               dwidth = 4;
-       else if (strcasecmp(cmd_name, "mdh") == 0)
-               dwidth = 2;
-       else if (strcasecmp(cmd_name, "mdb") == 0)
-               dwidth = 1;
-       else {
-               LOG_ERROR("command '%s' unknown: ", cmd_name);
-               return JIM_ERR;
-       }
-
-       /* convert count to "bytes" */
-       int bytes = count * dwidth;
-
-       struct target *target = Jim_CmdPrivData(goi.interp);
-       uint8_t  target_buf[32];
-       jim_wide x, y, z;
-       while (bytes > 0) {
-               y = (bytes < 16) ? bytes : 16; /* y = min(bytes, 16); */
-
-               /* Try to read out next block */
-               e = fn(target, addr, dwidth, y / dwidth, target_buf);
-
-               if (e != ERROR_OK) {
-                       Jim_SetResultFormatted(interp, "error reading target @ 0x%08lx", (long)addr);
-                       return JIM_ERR;
-               }
-
-               command_print_sameline(NULL, "0x%08x ", (int)(addr));
-               switch (dwidth) {
-               case 4:
-                       for (x = 0; x < 16 && x < y; x += 4) {
-                               z = target_buffer_get_u32(target, &(target_buf[x]));
-                               command_print_sameline(NULL, "%08x ", (int)(z));
-                       }
-                       for (; (x < 16) ; x += 4)
-                               command_print_sameline(NULL, "         ");
-                       break;
-               case 2:
-                       for (x = 0; x < 16 && x < y; x += 2) {
-                               z = target_buffer_get_u16(target, &(target_buf[x]));
-                               command_print_sameline(NULL, "%04x ", (int)(z));
-                       }
-                       for (; (x < 16) ; x += 2)
-                               command_print_sameline(NULL, "     ");
-                       break;
-               case 1:
-               default:
-                       for (x = 0 ; (x < 16) && (x < y) ; x += 1) {
-                               z = target_buffer_get_u8(target, &(target_buf[x]));
-                               command_print_sameline(NULL, "%02x ", (int)(z));
-                       }
-                       for (; (x < 16) ; x += 1)
-                               command_print_sameline(NULL, "   ");
-                       break;
-               }
-               /* ascii-ify the bytes */
-               for (x = 0 ; x < y ; x++) {
-                       if ((target_buf[x] >= 0x20) &&
-                               (target_buf[x] <= 0x7e)) {
-                               /* good */
-                       } else {
-                               /* smack it */
-                               target_buf[x] = '.';
-                       }
-               }
-               /* space pad  */
-               while (x < 16) {
-                       target_buf[x] = ' ';
-                       x++;
-               }
-               /* terminate */
-               target_buf[16] = 0;
-               /* print - with a newline */
-               command_print_sameline(NULL, "%s\n", target_buf);
-               /* NEXT... */
-               bytes -= 16;
-               addr += 16;
-       }
-       return JIM_OK;
-}
-
 static int jim_target_mem2array(Jim_Interp *interp,
                int argc, Jim_Obj *const *argv)
 {
-       struct target *target = Jim_CmdPrivData(interp);
+       struct command_context *cmd_ctx = current_command_context(interp);
+       assert(cmd_ctx);
+       struct target *target = get_current_target(cmd_ctx);
        return target_mem2array(interp, target, argc - 1, argv + 1);
 }
 
 static int jim_target_array2mem(Jim_Interp *interp,
                int argc, Jim_Obj *const *argv)
 {
-       struct target *target = Jim_CmdPrivData(interp);
+       struct command_context *cmd_ctx = current_command_context(interp);
+       assert(cmd_ctx);
+       struct target *target = get_current_target(cmd_ctx);
        return target_array2mem(interp, target, argc - 1, argv + 1);
 }
 
@@ -5080,8 +5254,8 @@ static int jim_target_examine(Jim_Interp *interp, int argc, Jim_Obj *const *argv
 {
        bool allow_defer = false;
 
-       Jim_GetOptInfo goi;
-       Jim_GetOpt_Setup(&goi, interp, argc - 1, argv + 1);
+       struct jim_getopt_info goi;
+       jim_getopt_setup(&goi, interp, argc - 1, argv + 1);
        if (goi.argc > 1) {
                const char *cmd_name = Jim_GetString(argv[0], NULL);
                Jim_SetResultFormatted(goi.interp,
@@ -5091,14 +5265,16 @@ static int jim_target_examine(Jim_Interp *interp, int argc, Jim_Obj *const *argv
        if (goi.argc > 0 &&
            strcmp(Jim_GetString(argv[1], NULL), "allow-defer") == 0) {
                /* consume it */
-               struct Jim_Obj *obj;
-               int e = Jim_GetOpt_Obj(&goi, &obj);
+               Jim_Obj *obj;
+               int e = jim_getopt_obj(&goi, &obj);
                if (e != JIM_OK)
                        return e;
                allow_defer = true;
        }
 
-       struct target *target = Jim_CmdPrivData(interp);
+       struct command_context *cmd_ctx = current_command_context(interp);
+       assert(cmd_ctx);
+       struct target *target = get_current_target(cmd_ctx);
        if (!target->tap->enabled)
                return jim_target_tap_disabled(interp);
 
@@ -5116,7 +5292,9 @@ static int jim_target_examine(Jim_Interp *interp, int argc, Jim_Obj *const *argv
 
 static int jim_target_was_examined(Jim_Interp *interp, int argc, Jim_Obj * const *argv)
 {
-       struct target *target = Jim_CmdPrivData(interp);
+       struct command_context *cmd_ctx = current_command_context(interp);
+       assert(cmd_ctx);
+       struct target *target = get_current_target(cmd_ctx);
 
        Jim_SetResultBool(interp, target_was_examined(target));
        return JIM_OK;
@@ -5124,7 +5302,9 @@ static int jim_target_was_examined(Jim_Interp *interp, int argc, Jim_Obj * const
 
 static int jim_target_examine_deferred(Jim_Interp *interp, int argc, Jim_Obj * const *argv)
 {
-       struct target *target = Jim_CmdPrivData(interp);
+       struct command_context *cmd_ctx = current_command_context(interp);
+       assert(cmd_ctx);
+       struct target *target = get_current_target(cmd_ctx);
 
        Jim_SetResultBool(interp, target->defer_examine);
        return JIM_OK;
@@ -5136,7 +5316,9 @@ static int jim_target_halt_gdb(Jim_Interp *interp, int argc, Jim_Obj *const *arg
                Jim_WrongNumArgs(interp, 1, argv, "[no parameters]");
                return JIM_ERR;
        }
-       struct target *target = Jim_CmdPrivData(interp);
+       struct command_context *cmd_ctx = current_command_context(interp);
+       assert(cmd_ctx);
+       struct target *target = get_current_target(cmd_ctx);
 
        if (target_call_event_callbacks(target, TARGET_EVENT_GDB_HALT) != ERROR_OK)
                return JIM_ERR;
@@ -5150,7 +5332,9 @@ static int jim_target_poll(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
                Jim_WrongNumArgs(interp, 1, argv, "[no parameters]");
                return JIM_ERR;
        }
-       struct target *target = Jim_CmdPrivData(interp);
+       struct command_context *cmd_ctx = current_command_context(interp);
+       assert(cmd_ctx);
+       struct target *target = get_current_target(cmd_ctx);
        if (!target->tap->enabled)
                return jim_target_tap_disabled(interp);
 
@@ -5166,8 +5350,8 @@ static int jim_target_poll(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
 
 static int jim_target_reset(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
 {
-       Jim_GetOptInfo goi;
-       Jim_GetOpt_Setup(&goi, interp, argc - 1, argv + 1);
+       struct jim_getopt_info goi;
+       jim_getopt_setup(&goi, interp, argc - 1, argv + 1);
 
        if (goi.argc != 2) {
                Jim_WrongNumArgs(interp, 0, argv,
@@ -5175,19 +5359,21 @@ static int jim_target_reset(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
                return JIM_ERR;
        }
 
-       Jim_Nvp *n;
-       int e = Jim_GetOpt_Nvp(&goi, nvp_assert, &n);
+       struct jim_nvp *n;
+       int e = jim_getopt_nvp(&goi, nvp_assert, &n);
        if (e != JIM_OK) {
-               Jim_GetOpt_NvpUnknown(&goi, nvp_assert, 1);
+               jim_getopt_nvp_unknown(&goi, nvp_assert, 1);
                return e;
        }
        /* the halt or not param */
        jim_wide a;
-       e = Jim_GetOpt_Wide(&goi, &a);
+       e = jim_getopt_wide(&goi, &a);
        if (e != JIM_OK)
                return e;
 
-       struct target *target = Jim_CmdPrivData(goi.interp);
+       struct command_context *cmd_ctx = current_command_context(interp);
+       assert(cmd_ctx);
+       struct target *target = get_current_target(cmd_ctx);
        if (!target->tap->enabled)
                return jim_target_tap_disabled(interp);
 
@@ -5202,7 +5388,7 @@ static int jim_target_reset(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
                target_reset_examined(target);
 
        /* determine if we should halt or not. */
-       target->reset_halt = !!a;
+       target->reset_halt = (a != 0);
        /* When this happens - all workareas are invalid. */
        target_free_all_working_areas_restore(target, 0);
 
@@ -5220,7 +5406,9 @@ static int jim_target_halt(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
                Jim_WrongNumArgs(interp, 1, argv, "[no parameters]");
                return JIM_ERR;
        }
-       struct target *target = Jim_CmdPrivData(interp);
+       struct command_context *cmd_ctx = current_command_context(interp);
+       assert(cmd_ctx);
+       struct target *target = get_current_target(cmd_ctx);
        if (!target->tap->enabled)
                return jim_target_tap_disabled(interp);
        int e = target->type->halt(target);
@@ -5229,8 +5417,8 @@ static int jim_target_halt(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
 
 static int jim_target_wait_state(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
 {
-       Jim_GetOptInfo goi;
-       Jim_GetOpt_Setup(&goi, interp, argc - 1, argv + 1);
+       struct jim_getopt_info goi;
+       jim_getopt_setup(&goi, interp, argc - 1, argv + 1);
 
        /* params:  <name>  statename timeoutmsecs */
        if (goi.argc != 2) {
@@ -5240,17 +5428,19 @@ static int jim_target_wait_state(Jim_Interp *interp, int argc, Jim_Obj *const *a
                return JIM_ERR;
        }
 
-       Jim_Nvp *n;
-       int e = Jim_GetOpt_Nvp(&goi, nvp_target_state, &n);
+       struct jim_nvp *n;
+       int e = jim_getopt_nvp(&goi, nvp_target_state, &n);
        if (e != JIM_OK) {
-               Jim_GetOpt_NvpUnknown(&goi, nvp_target_state, 1);
+               jim_getopt_nvp_unknown(&goi, nvp_target_state, 1);
                return e;
        }
        jim_wide a;
-       e = Jim_GetOpt_Wide(&goi, &a);
+       e = jim_getopt_wide(&goi, &a);
        if (e != JIM_OK)
                return e;
-       struct target *target = Jim_CmdPrivData(interp);
+       struct command_context *cmd_ctx = current_command_context(interp);
+       assert(cmd_ctx);
+       struct target *target = get_current_target(cmd_ctx);
        if (!target->tap->enabled)
                return jim_target_tap_disabled(interp);
 
@@ -5261,7 +5451,6 @@ static int jim_target_wait_state(Jim_Interp *interp, int argc, Jim_Obj *const *a
                                "target: %s wait %s fails (%#s) %s",
                                target_name(target), n->name,
                                eObj, target_strerror_safe(e));
-               Jim_FreeNewObj(interp, eObj);
                return JIM_ERR;
        }
        return JIM_OK;
@@ -5269,27 +5458,25 @@ static int jim_target_wait_state(Jim_Interp *interp, int argc, Jim_Obj *const *a
 /* List for human, Events defined for this target.
  * scripts/programs should use 'name cget -event NAME'
  */
-static int jim_target_event_list(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
+COMMAND_HANDLER(handle_target_event_list)
 {
-       struct command_context *cmd_ctx = current_command_context(interp);
-       assert(cmd_ctx != NULL);
-
-       struct target *target = Jim_CmdPrivData(interp);
+       struct target *target = get_current_target(CMD_CTX);
        struct target_event_action *teap = target->event_action;
-       command_print(cmd_ctx, "Event actions for target (%d) %s\n",
+
+       command_print(CMD, "Event actions for target (%d) %s\n",
                                   target->target_number,
                                   target_name(target));
-       command_print(cmd_ctx, "%-25s | Body", "Event");
-       command_print(cmd_ctx, "------------------------- | "
+       command_print(CMD, "%-25s | Body", "Event");
+       command_print(CMD, "------------------------- | "
                        "----------------------------------------");
        while (teap) {
-               Jim_Nvp *opt = Jim_Nvp_value2name_simple(nvp_target_event, teap->event);
-               command_print(cmd_ctx, "%-25s | %s",
+               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));
                teap = teap->next;
        }
-       command_print(cmd_ctx, "***END***");
-       return JIM_OK;
+       command_print(CMD, "***END***");
+       return ERROR_OK;
 }
 static int jim_target_current_state(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
 {
@@ -5297,26 +5484,30 @@ static int jim_target_current_state(Jim_Interp *interp, int argc, Jim_Obj *const
                Jim_WrongNumArgs(interp, 1, argv, "[no parameters]");
                return JIM_ERR;
        }
-       struct target *target = Jim_CmdPrivData(interp);
+       struct command_context *cmd_ctx = current_command_context(interp);
+       assert(cmd_ctx);
+       struct target *target = get_current_target(cmd_ctx);
        Jim_SetResultString(interp, target_state_name(target), -1);
        return JIM_OK;
 }
 static int jim_target_invoke_event(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
 {
-       Jim_GetOptInfo goi;
-       Jim_GetOpt_Setup(&goi, interp, argc - 1, argv + 1);
+       struct jim_getopt_info goi;
+       jim_getopt_setup(&goi, interp, argc - 1, argv + 1);
        if (goi.argc != 1) {
                const char *cmd_name = Jim_GetString(argv[0], NULL);
                Jim_SetResultFormatted(goi.interp, "%s <eventname>", cmd_name);
                return JIM_ERR;
        }
-       Jim_Nvp *n;
-       int e = Jim_GetOpt_Nvp(&goi, nvp_target_event, &n);
+       struct jim_nvp *n;
+       int e = jim_getopt_nvp(&goi, nvp_target_event, &n);
        if (e != JIM_OK) {
-               Jim_GetOpt_NvpUnknown(&goi, nvp_target_event, 1);
+               jim_getopt_nvp_unknown(&goi, nvp_target_event, 1);
                return e;
        }
-       struct target *target = Jim_CmdPrivData(interp);
+       struct command_context *cmd_ctx = current_command_context(interp);
+       assert(cmd_ctx);
+       struct target *target = get_current_target(cmd_ctx);
        target_handle_event(target, n->value);
        return JIM_OK;
 }
@@ -5324,7 +5515,7 @@ static int jim_target_invoke_event(Jim_Interp *interp, int argc, Jim_Obj *const
 static const struct command_registration target_instance_command_handlers[] = {
        {
                .name = "configure",
-               .mode = COMMAND_CONFIG,
+               .mode = COMMAND_ANY,
                .jim_handler = jim_target_configure,
                .help  = "configure a new target for use",
                .usage = "[target_attribute ...]",
@@ -5336,45 +5527,59 @@ static const struct command_registration target_instance_command_handlers[] = {
                .help  = "returns the specified target attribute",
                .usage = "target_attribute",
        },
+       {
+               .name = "mwd",
+               .handler = handle_mw_command,
+               .mode = COMMAND_EXEC,
+               .help = "Write 64-bit word(s) to target memory",
+               .usage = "address data [count]",
+       },
        {
                .name = "mww",
+               .handler = handle_mw_command,
                .mode = COMMAND_EXEC,
-               .jim_handler = jim_target_mw,
                .help = "Write 32-bit word(s) to target memory",
                .usage = "address data [count]",
        },
        {
                .name = "mwh",
+               .handler = handle_mw_command,
                .mode = COMMAND_EXEC,
-               .jim_handler = jim_target_mw,
                .help = "Write 16-bit half-word(s) to target memory",
                .usage = "address data [count]",
        },
        {
                .name = "mwb",
+               .handler = handle_mw_command,
                .mode = COMMAND_EXEC,
-               .jim_handler = jim_target_mw,
                .help = "Write byte(s) to target memory",
                .usage = "address data [count]",
        },
+       {
+               .name = "mdd",
+               .handler = handle_md_command,
+               .mode = COMMAND_EXEC,
+               .help = "Display target memory as 64-bit words",
+               .usage = "address [count]",
+       },
        {
                .name = "mdw",
+               .handler = handle_md_command,
                .mode = COMMAND_EXEC,
-               .jim_handler = jim_target_md,
                .help = "Display target memory as 32-bit words",
                .usage = "address [count]",
        },
        {
                .name = "mdh",
+               .handler = handle_md_command,
                .mode = COMMAND_EXEC,
-               .jim_handler = jim_target_md,
                .help = "Display target memory as 16-bit half-words",
                .usage = "address [count]",
        },
        {
                .name = "mdb",
+               .handler = handle_md_command,
                .mode = COMMAND_EXEC,
-               .jim_handler = jim_target_md,
                .help = "Display target memory as 8-bit bytes",
                .usage = "address [count]",
        },
@@ -5396,9 +5601,10 @@ static const struct command_registration target_instance_command_handlers[] = {
        },
        {
                .name = "eventlist",
+               .handler = handle_target_event_list,
                .mode = COMMAND_EXEC,
-               .jim_handler = jim_target_event_list,
                .help = "displays a table of events defined for this target",
+               .usage = "",
        },
        {
                .name = "curstate",
@@ -5411,21 +5617,19 @@ static const struct command_registration target_instance_command_handlers[] = {
                .mode = COMMAND_EXEC,
                .jim_handler = jim_target_examine,
                .help = "used internally for reset processing",
-               .usage = "arp_examine ['allow-defer']",
+               .usage = "['allow-defer']",
        },
        {
                .name = "was_examined",
                .mode = COMMAND_EXEC,
                .jim_handler = jim_target_was_examined,
                .help = "used internally for reset processing",
-               .usage = "was_examined",
        },
        {
                .name = "examine_deferred",
                .mode = COMMAND_EXEC,
                .jim_handler = jim_target_examine_deferred,
                .help = "used internally for reset processing",
-               .usage = "examine_deferred",
        },
        {
                .name = "arp_halt_gdb",
@@ -5467,7 +5671,7 @@ static const struct command_registration target_instance_command_handlers[] = {
        COMMAND_REGISTRATION_DONE
 };
 
-static int target_create(Jim_GetOptInfo *goi)
+static int target_create(struct jim_getopt_info *goi)
 {
        Jim_Obj *new_cmd;
        Jim_Cmd *cmd;
@@ -5486,7 +5690,7 @@ static int target_create(Jim_GetOptInfo *goi)
        }
 
        /* COMMAND */
-       Jim_GetOpt_Obj(goi, &new_cmd);
+       jim_getopt_obj(goi, &new_cmd);
        /* does this command exist? */
        cmd = Jim_GetCommand(goi->interp, new_cmd, JIM_ERRMSG);
        if (cmd) {
@@ -5496,7 +5700,7 @@ static int target_create(Jim_GetOptInfo *goi)
        }
 
        /* TYPE */
-       e = Jim_GetOpt_String(goi, &cp, NULL);
+       e = jim_getopt_string(goi, &cp, NULL);
        if (e != JIM_OK)
                return e;
        struct transport *tr = get_current_transport();
@@ -5514,15 +5718,6 @@ static int target_create(Jim_GetOptInfo *goi)
                        /* found */
                        break;
                }
-
-               /* check for deprecated name */
-               if (target_types[x]->deprecated_name) {
-                       if (0 == strcmp(cp, target_types[x]->deprecated_name)) {
-                               /* found */
-                               LOG_WARNING("target name is deprecated use: \'%s\'", target_types[x]->name);
-                               break;
-                       }
-               }
        }
        if (target_types[x] == NULL) {
                Jim_SetResultFormatted(goi->interp, "Unknown target type %s, try one of ", cp);
@@ -5544,18 +5739,24 @@ static int target_create(Jim_GetOptInfo *goi)
 
        /* Create it */
        target = calloc(1, sizeof(struct target));
+       if (!target) {
+               LOG_ERROR("Out of memory");
+               return JIM_ERR;
+       }
+
        /* set target number */
        target->target_number = new_target_number();
-       cmd_ctx->current_target = target;
 
        /* allocate memory for each unique target type */
-       target->type = calloc(1, sizeof(struct target_type));
+       target->type = malloc(sizeof(struct target_type));
+       if (!target->type) {
+               LOG_ERROR("Out of memory");
+               free(target);
+               return JIM_ERR;
+       }
 
        memcpy(target->type, target_types[x], sizeof(struct target_type));
 
-       /* will be set by "-endian" */
-       target->endianness = TARGET_ENDIAN_UNKNOWN;
-
        /* default to first core, override with -coreid */
        target->coreid = 0;
 
@@ -5572,12 +5773,18 @@ static int target_create(Jim_GetOptInfo *goi)
        target->next                = NULL;
        target->arch_info           = NULL;
 
-       target->display             = 1;
+       target->verbose_halt_msg        = true;
 
        target->halt_issued                     = false;
 
        /* initialize trace information */
        target->trace_info = calloc(1, sizeof(struct trace));
+       if (!target->trace_info) {
+               LOG_ERROR("Out of memory");
+               free(target->type);
+               free(target);
+               return JIM_ERR;
+       }
 
        target->dbgmsg          = NULL;
        target->dbg_msg_enabled = 0;
@@ -5587,16 +5794,34 @@ static int target_create(Jim_GetOptInfo *goi)
        target->rtos = NULL;
        target->rtos_auto_detect = false;
 
+       target->gdb_port_override = NULL;
+       target->gdb_max_connections = 1;
+
        /* Do the rest as "configure" options */
        goi->isconfigure = 1;
        e = target_configure(goi, target);
 
-       if (target->tap == NULL) {
-               Jim_SetResultString(goi->interp, "-chain-position required when creating target", -1);
-               e = JIM_ERR;
+       if (e == JIM_OK) {
+               if (target->has_dap) {
+                       if (!target->dap_configured) {
+                               Jim_SetResultString(goi->interp, "-dap ?name? required when creating target", -1);
+                               e = JIM_ERR;
+                       }
+               } else {
+                       if (!target->tap_configured) {
+                               Jim_SetResultString(goi->interp, "-chain-position ?name? required when creating target", -1);
+                               e = JIM_ERR;
+                       }
+               }
+               /* tap must be set after target was configured */
+               if (target->tap == NULL)
+                       e = JIM_ERR;
        }
 
        if (e != JIM_OK) {
+               rtos_destroy(target);
+               free(target->gdb_port_override);
+               free(target->trace_info);
                free(target->type);
                free(target);
                return e;
@@ -5609,6 +5834,29 @@ static int target_create(Jim_GetOptInfo *goi)
 
        cp = Jim_GetString(new_cmd, NULL);
        target->cmd_name = strdup(cp);
+       if (!target->cmd_name) {
+               LOG_ERROR("Out of memory");
+               rtos_destroy(target);
+               free(target->gdb_port_override);
+               free(target->trace_info);
+               free(target->type);
+               free(target);
+               return JIM_ERR;
+       }
+
+       if (target->type->target_create) {
+               e = (*(target->type->target_create))(target, goi->interp);
+               if (e != ERROR_OK) {
+                       LOG_DEBUG("target_create failed");
+                       free(target->cmd_name);
+                       rtos_destroy(target);
+                       free(target->gdb_port_override);
+                       free(target->trace_info);
+                       free(target->type);
+                       free(target);
+                       return JIM_ERR;
+               }
+       }
 
        /* create the target specific commands */
        if (target->type->commands) {
@@ -5616,17 +5864,6 @@ static int target_create(Jim_GetOptInfo *goi)
                if (ERROR_OK != e)
                        LOG_ERROR("unable to register '%s' commands", cp);
        }
-       if (target->type->target_create)
-               (*(target->type->target_create))(target, goi->interp);
-
-       /* append to end of list */
-       {
-               struct target **tpp;
-               tpp = &(all_targets);
-               while (*tpp)
-                       tpp = &((*tpp)->next);
-               *tpp = target;
-       }
 
        /* now - create the new target name command */
        const struct command_registration target_subcommands[] = {
@@ -5648,15 +5885,24 @@ static int target_create(Jim_GetOptInfo *goi)
                },
                COMMAND_REGISTRATION_DONE
        };
-       e = register_commands(cmd_ctx, NULL, target_commands);
-       if (ERROR_OK != e)
+       e = register_commands_override_target(cmd_ctx, NULL, target_commands, target);
+       if (e != ERROR_OK) {
+               if (target->type->deinit_target)
+                       target->type->deinit_target(target);
+               free(target->cmd_name);
+               rtos_destroy(target);
+               free(target->gdb_port_override);
+               free(target->trace_info);
+               free(target->type);
+               free(target);
                return JIM_ERR;
+       }
 
-       struct command *c = command_find_in_context(cmd_ctx, cp);
-       assert(c);
-       command_set_handler_data(c, target);
+       /* append to end of list */
+       append_to_list_all_targets(target);
 
-       return (ERROR_OK == e) ? JIM_OK : JIM_ERR;
+       cmd_ctx->current_target = target;
+       return JIM_OK;
 }
 
 static int jim_target_current(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
@@ -5668,7 +5914,9 @@ static int jim_target_current(Jim_Interp *interp, int argc, Jim_Obj *const *argv
        struct command_context *cmd_ctx = current_command_context(interp);
        assert(cmd_ctx != NULL);
 
-       Jim_SetResultString(interp, target_name(get_current_target(cmd_ctx)), -1);
+       struct target *target = get_current_target_or_null(cmd_ctx);
+       if (target)
+               Jim_SetResultString(interp, target_name(target), -1);
        return JIM_OK;
 }
 
@@ -5715,7 +5963,7 @@ static int jim_target_smp(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
        retval = 0;
        LOG_DEBUG("%d", argc);
        /* argv[1] = target to associate in smp
-        * argv[2] = target to assoicate in smp
+        * argv[2] = target to associate in smp
         * argv[3] ...
         */
 
@@ -5756,8 +6004,8 @@ static int jim_target_smp(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
 
 static int jim_target_create(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
 {
-       Jim_GetOptInfo goi;
-       Jim_GetOpt_Setup(&goi, interp, argc - 1, argv + 1);
+       struct jim_getopt_info goi;
+       jim_getopt_setup(&goi, interp, argc - 1, argv + 1);
        if (goi.argc < 3) {
                Jim_WrongNumArgs(goi.interp, goi.argc, goi.argv,
                        "<name> <target_type> [<target_options> ...]");
@@ -5772,11 +6020,11 @@ static const struct command_registration target_subcommand_handlers[] = {
                .mode = COMMAND_CONFIG,
                .handler = handle_target_init_command,
                .help = "initialize targets",
+               .usage = "",
        },
        {
                .name = "create",
-               /* REVISIT this should be COMMAND_CONFIG ... */
-               .mode = COMMAND_ANY,
+               .mode = COMMAND_CONFIG,
                .jim_handler = jim_target_create,
                .usage = "name type '-chain-position' name [options ...]",
                .help = "Creates and selects a new target",
@@ -5824,11 +6072,8 @@ static struct FastLoad *fastload;
 static void free_fastload(void)
 {
        if (fastload != NULL) {
-               int i;
-               for (i = 0; i < fastload_num; i++) {
-                       if (fastload[i].data)
-                               free(fastload[i].data);
-               }
+               for (int i = 0; i < fastload_num; i++)
+                       free(fastload[i].data);
                free(fastload);
                fastload = NULL;
        }
@@ -5841,7 +6086,6 @@ COMMAND_HANDLER(handle_fast_load_image_command)
        uint32_t image_size;
        target_addr_t min_address = 0;
        target_addr_t max_address = -1;
-       int i;
 
        struct image image;
 
@@ -5862,15 +6106,15 @@ COMMAND_HANDLER(handle_fast_load_image_command)
        fastload_num = image.num_sections;
        fastload = malloc(sizeof(struct FastLoad)*image.num_sections);
        if (fastload == NULL) {
-               command_print(CMD_CTX, "out of memory");
+               command_print(CMD, "out of memory");
                image_close(&image);
                return ERROR_FAIL;
        }
        memset(fastload, 0, sizeof(struct FastLoad)*image.num_sections);
-       for (i = 0; i < image.num_sections; i++) {
+       for (unsigned int i = 0; i < image.num_sections; i++) {
                buffer = malloc(image.sections[i].size);
                if (buffer == NULL) {
-                       command_print(CMD_CTX, "error allocating buffer for section (%d bytes)",
+                       command_print(CMD, "error allocating buffer for section (%d bytes)",
                                                  (int)(image.sections[i].size));
                        retval = ERROR_FAIL;
                        break;
@@ -5885,7 +6129,7 @@ COMMAND_HANDLER(handle_fast_load_image_command)
                uint32_t offset = 0;
                uint32_t length = buf_cnt;
 
-               /* DANGER!!! beware of unsigned comparision here!!! */
+               /* DANGER!!! beware of unsigned comparison here!!! */
 
                if ((image.sections[i].base_address + buf_cnt >= min_address) &&
                                (image.sections[i].base_address < max_address)) {
@@ -5902,7 +6146,7 @@ COMMAND_HANDLER(handle_fast_load_image_command)
                        fastload[i].data = malloc(length);
                        if (fastload[i].data == NULL) {
                                free(buffer);
-                               command_print(CMD_CTX, "error allocating buffer for section (%" PRIu32 " bytes)",
+                               command_print(CMD, "error allocating buffer for section (%" PRIu32 " bytes)",
                                                          length);
                                retval = ERROR_FAIL;
                                break;
@@ -5911,7 +6155,7 @@ COMMAND_HANDLER(handle_fast_load_image_command)
                        fastload[i].length = length;
 
                        image_size += length;
-                       command_print(CMD_CTX, "%u bytes written at address 0x%8.8x",
+                       command_print(CMD, "%u bytes written at address 0x%8.8x",
                                                  (unsigned int)length,
                                                  ((unsigned int)(image.sections[i].base_address + offset)));
                }
@@ -5920,11 +6164,11 @@ COMMAND_HANDLER(handle_fast_load_image_command)
        }
 
        if ((ERROR_OK == retval) && (duration_measure(&bench) == ERROR_OK)) {
-               command_print(CMD_CTX, "Loaded %" PRIu32 " bytes "
+               command_print(CMD, "Loaded %" PRIu32 " bytes "
                                "in %fs (%0.3f KiB/s)", image_size,
                                duration_elapsed(&bench), duration_kbps(&bench, image_size));
 
-               command_print(CMD_CTX,
+               command_print(CMD,
                                "WARNING: image has not been loaded to target!"
                                "You can issue a 'fast_load' to finish loading.");
        }
@@ -5951,7 +6195,7 @@ COMMAND_HANDLER(handle_fast_load_command)
        int retval = ERROR_OK;
        for (i = 0; i < fastload_num; i++) {
                struct target *target = get_current_target(CMD_CTX);
-               command_print(CMD_CTX, "Write to 0x%08x, length 0x%08x",
+               command_print(CMD, "Write to 0x%08x, length 0x%08x",
                                          (unsigned int)(fastload[i].address),
                                          (unsigned int)(fastload[i].length));
                retval = target_write_buffer(target, fastload[i].address, fastload[i].length, fastload[i].data);
@@ -5961,7 +6205,7 @@ COMMAND_HANDLER(handle_fast_load_command)
        }
        if (retval == ERROR_OK) {
                int64_t after = timeval_ms();
-               command_print(CMD_CTX, "Loaded image %f kBytes/s", (float)(size/1024.0)/((float)(after-ms)/1000.0));
+               command_print(CMD, "Loaded image %f kBytes/s", (float)(size/1024.0)/((float)(after-ms)/1000.0));
        }
        return retval;
 }
@@ -5979,8 +6223,8 @@ static const struct command_registration target_command_handlers[] = {
                .name = "target",
                .mode = COMMAND_CONFIG,
                .help = "configure target",
-
                .chain = target_subcommand_handlers,
+               .usage = "",
        },
        COMMAND_REGISTRATION_DONE
 };
@@ -6016,7 +6260,7 @@ COMMAND_HANDLER(handle_ps_command)
        if ((target->rtos) && (target->rtos->type)
                        && (target->rtos->type->ps_command)) {
                display = target->rtos->type->ps_command(target);
-               command_print(CMD_CTX, "%s", display);
+               command_print(CMD, "%s", display);
                free(display);
                return ERROR_OK;
        } else {
@@ -6025,13 +6269,13 @@ COMMAND_HANDLER(handle_ps_command)
        }
 }
 
-static void binprint(struct command_context *cmd_ctx, const char *text, const uint8_t *buf, int size)
+static void binprint(struct command_invocation *cmd, const char *text, const uint8_t *buf, int size)
 {
        if (text != NULL)
-               command_print_sameline(cmd_ctx, "%s", text);
+               command_print_sameline(cmd, "%s", text);
        for (int i = 0; i < size; i++)
-               command_print_sameline(cmd_ctx, " %02x", buf[i]);
-       command_print(cmd_ctx, " ");
+               command_print_sameline(cmd, " %02x", buf[i]);
+       command_print(cmd, " ");
 }
 
 COMMAND_HANDLER(handle_test_mem_access_command)
@@ -6083,7 +6327,7 @@ COMMAND_HANDLER(handle_test_mem_access_command)
                                        read_ref[i] = rand();
                                        read_buf[i] = read_ref[i];
                                }
-                               command_print_sameline(CMD_CTX,
+                               command_print_sameline(CMD,
                                                "Test read %" PRIu32 " x %d @ %d to %saligned buffer: ", count,
                                                size, offset, host_offset ? "un" : "");
 
@@ -6096,10 +6340,10 @@ COMMAND_HANDLER(handle_test_mem_access_command)
                                duration_measure(&bench);
 
                                if (retval == ERROR_TARGET_UNALIGNED_ACCESS) {
-                                       command_print(CMD_CTX, "Unsupported alignment");
+                                       command_print(CMD, "Unsupported alignment");
                                        goto next;
                                } else if (retval != ERROR_OK) {
-                                       command_print(CMD_CTX, "Memory read failed");
+                                       command_print(CMD, "Memory read failed");
                                        goto next;
                                }
 
@@ -6109,13 +6353,13 @@ COMMAND_HANDLER(handle_test_mem_access_command)
                                /* check result */
                                int result = memcmp(read_ref, read_buf, host_bufsiz);
                                if (result == 0) {
-                                       command_print(CMD_CTX, "Pass in %fs (%0.3f KiB/s)",
+                                       command_print(CMD, "Pass in %fs (%0.3f KiB/s)",
                                                        duration_elapsed(&bench),
                                                        duration_kbps(&bench, count * size));
                                } else {
-                                       command_print(CMD_CTX, "Compare failed");
-                                       binprint(CMD_CTX, "ref:", read_ref, host_bufsiz);
-                                       binprint(CMD_CTX, "buf:", read_buf, host_bufsiz);
+                                       command_print(CMD, "Compare failed");
+                                       binprint(CMD, "ref:", read_ref, host_bufsiz);
+                                       binprint(CMD, "buf:", read_buf, host_bufsiz);
                                }
 next:
                                free(read_ref);
@@ -6155,13 +6399,13 @@ out:
 
                                for (size_t i = 0; i < host_bufsiz; i++)
                                        write_buf[i] = rand();
-                               command_print_sameline(CMD_CTX,
+                               command_print_sameline(CMD,
                                                "Test write %" PRIu32 " x %d @ %d from %saligned buffer: ", count,
                                                size, offset, host_offset ? "un" : "");
 
                                retval = target_write_memory(target, wa->address, 1, num_bytes, test_pattern);
                                if (retval != ERROR_OK) {
-                                       command_print(CMD_CTX, "Test pattern write failed");
+                                       command_print(CMD, "Test pattern write failed");
                                        goto nextw;
                                }
 
@@ -6178,30 +6422,30 @@ out:
                                duration_measure(&bench);
 
                                if (retval == ERROR_TARGET_UNALIGNED_ACCESS) {
-                                       command_print(CMD_CTX, "Unsupported alignment");
+                                       command_print(CMD, "Unsupported alignment");
                                        goto nextw;
                                } else if (retval != ERROR_OK) {
-                                       command_print(CMD_CTX, "Memory write failed");
+                                       command_print(CMD, "Memory write failed");
                                        goto nextw;
                                }
 
                                /* read back */
                                retval = target_read_memory(target, wa->address, 1, num_bytes, read_buf);
                                if (retval != ERROR_OK) {
-                                       command_print(CMD_CTX, "Test pattern write failed");
+                                       command_print(CMD, "Test pattern write failed");
                                        goto nextw;
                                }
 
                                /* check result */
                                int result = memcmp(read_ref, read_buf, num_bytes);
                                if (result == 0) {
-                                       command_print(CMD_CTX, "Pass in %fs (%0.3f KiB/s)",
+                                       command_print(CMD, "Pass in %fs (%0.3f KiB/s)",
                                                        duration_elapsed(&bench),
                                                        duration_kbps(&bench, count * size));
                                } else {
-                                       command_print(CMD_CTX, "Compare failed");
-                                       binprint(CMD_CTX, "ref:", read_ref, num_bytes);
-                                       binprint(CMD_CTX, "buf:", read_buf, num_bytes);
+                                       command_print(CMD, "Compare failed");
+                                       binprint(CMD, "ref:", read_ref, num_bytes);
+                                       binprint(CMD, "buf:", read_buf, num_bytes);
                                }
 nextw:
                                free(read_ref);
@@ -6277,7 +6521,7 @@ static const struct command_registration target_exec_command_handlers[] = {
                .name = "halt",
                .handler = handle_halt_command,
                .mode = COMMAND_EXEC,
-               .help = "request target to halt, then wait up to the specified"
+               .help = "request target to halt, then wait up to the specified "
                        "number of milliseconds (default 5000) for it to complete",
                .usage = "[milliseconds]",
        },
@@ -6293,7 +6537,7 @@ static const struct command_registration target_exec_command_handlers[] = {
                .handler = handle_reset_command,
                .mode = COMMAND_EXEC,
                .usage = "[run|halt|init]",
-               .help = "Reset all targets into the specified mode."
+               .help = "Reset all targets into the specified mode. "
                        "Default reset mode is run, if not given.",
        },
        {
@@ -6314,7 +6558,7 @@ static const struct command_registration target_exec_command_handlers[] = {
                .name = "mdd",
                .handler = handle_md_command,
                .mode = COMMAND_EXEC,
-               .help = "display memory words",
+               .help = "display memory double-words",
                .usage = "['phys'] address [count]",
        },
        {
@@ -6342,7 +6586,7 @@ static const struct command_registration target_exec_command_handlers[] = {
                .name = "mwd",
                .handler = handle_mw_command,
                .mode = COMMAND_EXEC,
-               .help = "write memory word",
+               .help = "write memory double-word",
                .usage = "['phys'] address value [count]",
        },
        {
@@ -6371,14 +6615,14 @@ static const struct command_registration target_exec_command_handlers[] = {
                .handler = handle_bp_command,
                .mode = COMMAND_EXEC,
                .help = "list or set hardware or software breakpoint",
-               .usage = "<address> [<asid>]<length> ['hw'|'hw_ctx']",
+               .usage = "[<address> [<asid>] <length> ['hw'|'hw_ctx']]",
        },
        {
                .name = "rbp",
                .handler = handle_rbp_command,
                .mode = COMMAND_EXEC,
                .help = "remove breakpoint",
-               .usage = "address",
+               .usage = "'all' | address",
        },
        {
                .name = "wp",
@@ -6446,15 +6690,15 @@ static const struct command_registration target_exec_command_handlers[] = {
                .handler = handle_target_reset_nag,
                .mode = COMMAND_ANY,
                .help = "Nag after each reset about options that could have been "
-                               "enabled to improve performance. ",
+                               "enabled to improve performance.",
                .usage = "['enable'|'disable']",
        },
        {
                .name = "ps",
                .handler = handle_ps_command,
                .mode = COMMAND_EXEC,
-               .help = "list all tasks ",
-               .usage = " ",
+               .help = "list all tasks",
+               .usage = "",
        },
        {
                .name = "test_mem_access",