explode tcl_target_func into many handlers
authorZachary T Welch <zw@superlucidity.net>
Thu, 26 Nov 2009 00:36:46 +0000 (16:36 -0800)
committerZachary T Welch <zw@superlucidity.net>
Sat, 28 Nov 2009 21:00:39 +0000 (13:00 -0800)
Eliminate the monolithic tcl_target_func by registering each of its
commands using the new chained command registration mechanism.

Also chains the target's commands under the CPU command, though these
may not work properly without some further modification.

src/target/target.c

index d9552a5..3a84040 100644 (file)
@@ -3366,7 +3366,7 @@ static int target_array2mem(Jim_Interp *interp, struct target *target, int argc,
         * argv[4] = count to write
         */
        if (argc != 4) {
-               Jim_WrongNumArgs(interp, 1, argv, "varname width addr nelems");
+               Jim_WrongNumArgs(interp, 0, argv, "varname width addr nelems");
                return JIM_ERR;
        }
        varname = Jim_GetString(argv[0], &len);
@@ -3849,422 +3849,537 @@ static int target_configure(Jim_GetOptInfo *goi, struct target *target)
        return JIM_OK;
 }
 
-/** this is the 'tcl' handler for the target specific command */
-static int tcl_target_func(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
+static int jim_target_configure(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
 {
        Jim_GetOptInfo goi;
-       jim_wide a,b,c;
-       int x,y,z;
-       uint8_t  target_buf[32];
-       Jim_Nvp *n;
-       struct target *target;
-       struct command_context *cmd_ctx;
-       int e;
+       Jim_GetOpt_Setup(&goi, interp, argc - 1, argv + 1);
+       goi.isconfigure = strcmp(Jim_GetString(argv[0], NULL), "configure") == 0;
+       int need_args = 1 + goi.isconfigure;
+       if (goi.argc < need_args)
+       {
+               Jim_WrongNumArgs(goi.interp, goi.argc, goi.argv,
+                       goi.isconfigure
+                               ? "missing: -option VALUE ..."
+                               : "missing: -option ...");
+               return JIM_ERR;
+       }
+       struct target *target = Jim_CmdPrivData(goi.interp);
+       return target_configure(&goi, target);
+}
 
-       enum {
-               TS_CMD_CONFIGURE,
-               TS_CMD_CGET,
-
-               TS_CMD_MWW, TS_CMD_MWH, TS_CMD_MWB,
-               TS_CMD_MDW, TS_CMD_MDH, TS_CMD_MDB,
-               TS_CMD_MRW, TS_CMD_MRH, TS_CMD_MRB,
-               TS_CMD_MEM2ARRAY, TS_CMD_ARRAY2MEM,
-               TS_CMD_EXAMINE,
-               TS_CMD_POLL,
-               TS_CMD_RESET,
-               TS_CMD_HALT,
-               TS_CMD_WAITSTATE,
-               TS_CMD_EVENTLIST,
-               TS_CMD_CURSTATE,
-               TS_CMD_INVOKE_EVENT,
-       };
+static int jim_target_mw(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
+{
+       const char *cmd_name = Jim_GetString(argv[0], NULL);
 
-       static const Jim_Nvp target_options[] = {
-               { .name = "configure", .value = TS_CMD_CONFIGURE },
-               { .name = "cget", .value = TS_CMD_CGET },
-               { .name = "mww", .value = TS_CMD_MWW },
-               { .name = "mwh", .value = TS_CMD_MWH },
-               { .name = "mwb", .value = TS_CMD_MWB },
-               { .name = "mdw", .value = TS_CMD_MDW },
-               { .name = "mdh", .value = TS_CMD_MDH },
-               { .name = "mdb", .value = TS_CMD_MDB },
-               { .name = "mem2array", .value = TS_CMD_MEM2ARRAY },
-               { .name = "array2mem", .value = TS_CMD_ARRAY2MEM },
-               { .name = "eventlist", .value = TS_CMD_EVENTLIST },
-               { .name = "curstate",  .value = TS_CMD_CURSTATE },
-
-               { .name = "arp_examine", .value = TS_CMD_EXAMINE },
-               { .name = "arp_poll", .value = TS_CMD_POLL },
-               { .name = "arp_reset", .value = TS_CMD_RESET },
-               { .name = "arp_halt", .value = TS_CMD_HALT },
-               { .name = "arp_waitstate", .value = TS_CMD_WAITSTATE },
-               { .name = "invoke-event", .value = TS_CMD_INVOKE_EVENT },
-
-               { .name = NULL, .value = -1 },
-       };
+       Jim_GetOptInfo goi;
+       Jim_GetOpt_Setup(&goi, interp, argc - 1, argv + 1);
 
-       /* go past the "command" */
-       Jim_GetOpt_Setup(&goi, interp, argc-1, argv + 1);
+       if (goi.argc != 2 && goi.argc != 3)
+       {
+               Jim_SetResult_sprintf(goi.interp,
+                               "usage: %s <address> <data> [<count>]", cmd_name);
+               return JIM_ERR;
+       }
 
-       target = Jim_CmdPrivData(goi.interp);
-       cmd_ctx = Jim_GetAssocData(goi.interp, "context");
+       jim_wide a;
+       int e = Jim_GetOpt_Wide(&goi, &a);
+       if (e != JIM_OK)
+               return e;
 
-       /* commands here are in an NVP table */
-       e = Jim_GetOpt_Nvp(&goi, target_options, &n);
-       if (e != JIM_OK) {
-               Jim_GetOpt_NvpUnknown(&goi, target_options, 0);
+       jim_wide b;
+       e = Jim_GetOpt_Wide(&goi, &b);
+       if (e != JIM_OK)
                return e;
+
+       jim_wide c = 1;
+       if (goi.argc == 3)
+       {
+               e = Jim_GetOpt_Wide(&goi, &c);
+               if (e != JIM_OK)
+                       return e;
        }
-       /* Assume blank result */
-       Jim_SetEmptyResult(goi.interp);
 
-       switch (n->value) {
-       case TS_CMD_CONFIGURE:
-               if (goi.argc < 2) {
-                       Jim_WrongNumArgs(goi.interp, goi.argc, goi.argv, "missing: -option VALUE ...");
-                       return JIM_ERR;
-               }
-               goi.isconfigure = 1;
-               return target_configure(&goi, target);
-       case TS_CMD_CGET:
-               // some things take params
-               if (goi.argc < 1) {
-                       Jim_WrongNumArgs(goi.interp, 0, goi.argv, "missing: ?-option?");
-                       return JIM_ERR;
-               }
-               goi.isconfigure = 0;
-               return target_configure(&goi, target);
-               break;
-       case TS_CMD_MWW:
-       case TS_CMD_MWH:
-       case TS_CMD_MWB:
-               /* argv[0] = cmd
-                * argv[1] = address
-                * argv[2] = data
-                * argv[3] = optional count.
-                */
+       struct target *target = Jim_CmdPrivData(goi.interp);
+       uint8_t  target_buf[32];
+       if (strcasecmp(cmd_name, "mww") == 0) {
+               target_buffer_set_u32(target, target_buf, b);
+               b = 4;
+       }
+       else if (strcasecmp(cmd_name, "mwh") == 0) {
+               target_buffer_set_u16(target, target_buf, b);
+               b = 2;
+       }
+       else if (strcasecmp(cmd_name, "mwb") == 0) {
+               target_buffer_set_u8(target, target_buf, b);
+               b = 1;
+       } else {
+               LOG_ERROR("command '%s' unknown: ", cmd_name);
+               return JIM_ERR;
+       }
 
-               if ((goi.argc == 2) || (goi.argc == 3)) {
-                       /* all is well */
-               } else {
-               mwx_error:
-                       Jim_SetResult_sprintf(goi.interp, "expected: %s ADDR DATA [COUNT]", n->name);
+       for (jim_wide x = 0; x < c; x++)
+       {
+               e = target_write_memory(target, a, b, 1, target_buf);
+               if (e != ERROR_OK)
+               {
+                       Jim_SetResult_sprintf(interp,
+                                       "Error writing @ 0x%08x: %d\n", (int)(a), e);
                        return JIM_ERR;
                }
+               /* b = width */
+               a = a + b;
+       }
+       return JIM_OK;
+}
 
-               e = Jim_GetOpt_Wide(&goi, &a);
-               if (e != JIM_OK) {
-                       goto mwx_error;
-               }
+static int jim_target_md(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
+{
+       const char *cmd_name = Jim_GetString(argv[0], NULL);
 
-               e = Jim_GetOpt_Wide(&goi, &b);
-               if (e != JIM_OK) {
-                       goto mwx_error;
-               }
-               if (goi.argc == 3) {
-                       e = Jim_GetOpt_Wide(&goi, &c);
-                       if (e != JIM_OK) {
-                               goto mwx_error;
-                       }
-               } else {
-                       c = 1;
-               }
+       Jim_GetOptInfo goi;
+       Jim_GetOpt_Setup(&goi, interp, argc - 1, argv + 1);
 
-               switch (n->value) {
-               case TS_CMD_MWW:
-                       target_buffer_set_u32(target, target_buf, b);
-                       b = 4;
-                       break;
-               case TS_CMD_MWH:
-                       target_buffer_set_u16(target, target_buf, b);
-                       b = 2;
-                       break;
-               case TS_CMD_MWB:
-                       target_buffer_set_u8(target, target_buf, b);
-                       b = 1;
-                       break;
-               }
-               for (x = 0 ; x < c ; x++) {
-                       e = target_write_memory(target, a, b, 1, target_buf);
-                       if (e != ERROR_OK) {
-                               Jim_SetResult_sprintf(interp, "Error writing @ 0x%08x: %d\n", (int)(a), e);
-                               return JIM_ERR;
-                       }
-                       /* b = width */
-                       a = a + b;
-               }
-               return JIM_OK;
-               break;
+       if ((goi.argc == 2) || (goi.argc == 3))
+       {
+               Jim_SetResult_sprintf(goi.interp,
+                               "usage: %s <address> [<count>]", cmd_name);
+               return JIM_ERR;
+       }
 
-               /* display */
-       case TS_CMD_MDW:
-       case TS_CMD_MDH:
-       case TS_CMD_MDB:
-               /* argv[0] = command
-                * argv[1] = address
-                * argv[2] = optional count
-                */
-               if ((goi.argc == 2) || (goi.argc == 3)) {
-                       Jim_SetResult_sprintf(goi.interp, "expected: %s ADDR [COUNT]", n->name);
-                       return JIM_ERR;
-               }
-               e = Jim_GetOpt_Wide(&goi, &a);
+       jim_wide a;
+       int e = Jim_GetOpt_Wide(&goi, &a);
+       if (e != JIM_OK) {
+               return JIM_ERR;
+       }
+       jim_wide c;
+       if (goi.argc) {
+               e = Jim_GetOpt_Wide(&goi, &c);
                if (e != JIM_OK) {
                        return JIM_ERR;
                }
-               if (goi.argc) {
-                       e = Jim_GetOpt_Wide(&goi, &c);
-                       if (e != JIM_OK) {
-                               return JIM_ERR;
-                       }
-               } else {
-                       c = 1;
+       } else {
+               c = 1;
+       }
+       jim_wide b = 1; /* shut up gcc */
+       if (strcasecmp(cmd_name, "mdw") == 0)
+               b = 4;
+       else if (strcasecmp(cmd_name, "mdh") == 0)
+               b = 2;
+       else if (strcasecmp(cmd_name, "mdb") == 0)
+               b = 1;
+       else {
+               LOG_ERROR("command '%s' unknown: ", cmd_name);
+               return JIM_ERR;
+       }
+
+       /* convert count to "bytes" */
+       c = c * b;
+
+       struct target *target = Jim_CmdPrivData(goi.interp);
+       uint8_t  target_buf[32];
+       jim_wide x, y, z;
+       while (c > 0) {
+               y = c;
+               if (y > 16) {
+                       y = 16;
                }
-               b = 1; /* shut up gcc */
-               switch (n->value) {
-               case TS_CMD_MDW:
-                       b =  4;
-                       break;
-               case TS_CMD_MDH:
-                       b = 2;
-                       break;
-               case TS_CMD_MDB:
-                       b = 1;
-                       break;
+               e = target_read_memory(target, a, b, y / b, target_buf);
+               if (e != ERROR_OK) {
+                       Jim_SetResult_sprintf(interp, "error reading target @ 0x%08lx", (int)(a));
+                       return JIM_ERR;
                }
 
-               /* convert to "bytes" */
-               c = c * b;
-               /* count is now in 'BYTES' */
-               while (c > 0) {
-                       y = c;
-                       if (y > 16) {
-                               y = 16;
+               Jim_fprintf(interp, interp->cookie_stdout, "0x%08x ", (int)(a));
+               switch (b) {
+               case 4:
+                       for (x = 0; x < 16 && x < y; x += 4)
+                       {
+                               z = target_buffer_get_u32(target, &(target_buf[ x * 4 ]));
+                               Jim_fprintf(interp, interp->cookie_stdout, "%08x ", (int)(z));
                        }
-                       e = target_read_memory(target, a, b, y / b, target_buf);
-                       if (e != ERROR_OK) {
-                               Jim_SetResult_sprintf(interp, "error reading target @ 0x%08lx", (int)(a));
-                               return JIM_ERR;
+                       for (; (x < 16) ; x += 4) {
+                               Jim_fprintf(interp, interp->cookie_stdout, "         ");
                        }
-
-                       Jim_fprintf(interp, interp->cookie_stdout, "0x%08x ", (int)(a));
-                       switch (b) {
-                       case 4:
-                               for (x = 0 ; (x < 16) && (x < y) ; x += 4) {
-                                       z = target_buffer_get_u32(target, &(target_buf[ x * 4 ]));
-                                       Jim_fprintf(interp, interp->cookie_stdout, "%08x ", (int)(z));
-                               }
-                               for (; (x < 16) ; x += 4) {
-                                       Jim_fprintf(interp, interp->cookie_stdout, "         ");
-                               }
-                               break;
-                       case 2:
-                               for (x = 0 ; (x < 16) && (x < y) ; x += 2) {
-                                       z = target_buffer_get_u16(target, &(target_buf[ x * 2 ]));
-                                       Jim_fprintf(interp, interp->cookie_stdout, "%04x ", (int)(z));
-                               }
-                               for (; (x < 16) ; x += 2) {
-                                       Jim_fprintf(interp, interp->cookie_stdout, "     ");
-                               }
-                               break;
-                       case 1:
-                       default:
-                               for (x = 0 ; (x < 16) && (x < y) ; x += 1) {
-                                       z = target_buffer_get_u8(target, &(target_buf[ x * 4 ]));
-                                       Jim_fprintf(interp, interp->cookie_stdout, "%02x ", (int)(z));
-                               }
-                               for (; (x < 16) ; x += 1) {
-                                       Jim_fprintf(interp, interp->cookie_stdout, "   ");
-                               }
-                               break;
+                       break;
+               case 2:
+                       for (x = 0; x < 16 && x < y; x += 2)
+                       {
+                               z = target_buffer_get_u16(target, &(target_buf[ x * 2 ]));
+                               Jim_fprintf(interp, interp->cookie_stdout, "%04x ", (int)(z));
                        }
-                       /* 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] = '.';
-                               }
+                       for (; (x < 16) ; x += 2) {
+                               Jim_fprintf(interp, interp->cookie_stdout, "     ");
                        }
-                       /* space pad  */
-                       while (x < 16) {
-                               target_buf[x] = ' ';
-                               x++;
+                       break;
+               case 1:
+               default:
+                       for (x = 0 ; (x < 16) && (x < y) ; x += 1) {
+                               z = target_buffer_get_u8(target, &(target_buf[ x * 4 ]));
+                               Jim_fprintf(interp, interp->cookie_stdout, "%02x ", (int)(z));
                        }
-                       /* terminate */
-                       target_buf[16] = 0;
-                       /* print - with a newline */
-                       Jim_fprintf(interp, interp->cookie_stdout, "%s\n", target_buf);
-                       /* NEXT... */
-                       c -= 16;
-                       a += 16;
-               }
-               return JIM_OK;
-       case TS_CMD_MEM2ARRAY:
-               return target_mem2array(goi.interp, target, goi.argc, goi.argv);
-               break;
-       case TS_CMD_ARRAY2MEM:
-               return target_array2mem(goi.interp, target, goi.argc, goi.argv);
-               break;
-       case TS_CMD_EXAMINE:
-               if (goi.argc) {
-                       Jim_WrongNumArgs(goi.interp, 2, argv, "[no parameters]");
-                       return JIM_ERR;
-               }
-               if (!target->tap->enabled)
-                       goto err_tap_disabled;
-               e = target->type->examine(target);
-               if (e != ERROR_OK) {
-                       Jim_SetResult_sprintf(interp, "examine-fails: %d", e);
-                       return JIM_ERR;
-               }
-               return JIM_OK;
-       case TS_CMD_POLL:
-               if (goi.argc) {
-                       Jim_WrongNumArgs(goi.interp, 2, argv, "[no parameters]");
-                       return JIM_ERR;
-               }
-               if (!target->tap->enabled)
-                       goto err_tap_disabled;
-               if (!(target_was_examined(target))) {
-                       e = ERROR_TARGET_NOT_EXAMINED;
-               } else {
-                       e = target->type->poll(target);
-               }
-               if (e != ERROR_OK) {
-                       Jim_SetResult_sprintf(interp, "poll-fails: %d", e);
-                       return JIM_ERR;
-               } else {
-                       return JIM_OK;
-               }
-               break;
-       case TS_CMD_RESET:
-               if (goi.argc != 2) {
-                       Jim_WrongNumArgs(interp, 2, argv,
-                                       "([tT]|[fF]|assert|deassert) BOOL");
-                       return JIM_ERR;
-               }
-               e = Jim_GetOpt_Nvp(&goi, nvp_assert, &n);
-               if (e != JIM_OK) {
-                       Jim_GetOpt_NvpUnknown(&goi, nvp_assert, 1);
-                       return e;
-               }
-               /* the halt or not param */
-               e = Jim_GetOpt_Wide(&goi, &a);
-               if (e != JIM_OK) {
-                       return e;
-               }
-               if (!target->tap->enabled)
-                       goto err_tap_disabled;
-               if (!target->type->assert_reset
-                               || !target->type->deassert_reset) {
-                       Jim_SetResult_sprintf(interp,
-                                       "No target-specific reset for %s",
-                                       target_name(target));
-                       return JIM_ERR;
-               }
-               /* determine if we should halt or not. */
-               target->reset_halt = !!a;
-               /* When this happens - all workareas are invalid. */
-               target_free_all_working_areas_restore(target, 0);
-
-               /* do the assert */
-               if (n->value == NVP_ASSERT) {
-                       e = target->type->assert_reset(target);
-               } else {
-                       e = target->type->deassert_reset(target);
-               }
-               return (e == ERROR_OK) ? JIM_OK : JIM_ERR;
-       case TS_CMD_HALT:
-               if (goi.argc) {
-                       Jim_WrongNumArgs(goi.interp, 0, argv, "halt [no parameters]");
-                       return JIM_ERR;
-               }
-               if (!target->tap->enabled)
-                       goto err_tap_disabled;
-               e = target->type->halt(target);
-               return (e == ERROR_OK) ? JIM_OK : JIM_ERR;
-       case TS_CMD_WAITSTATE:
-               /* params:  <name>  statename timeoutmsecs */
-               if (goi.argc != 2) {
-                       Jim_SetResult_sprintf(goi.interp, "%s STATENAME TIMEOUTMSECS", n->name);
-                       return JIM_ERR;
-               }
-               e = Jim_GetOpt_Nvp(&goi, nvp_target_state, &n);
-               if (e != JIM_OK) {
-                       Jim_GetOpt_NvpUnknown(&goi, nvp_target_state,1);
-                       return e;
-               }
-               e = Jim_GetOpt_Wide(&goi, &a);
-               if (e != JIM_OK) {
-                       return e;
-               }
-               if (!target->tap->enabled)
-                       goto err_tap_disabled;
-               e = target_wait_state(target, n->value, a);
-               if (e != ERROR_OK) {
-                       Jim_SetResult_sprintf(goi.interp,
-                                       "target: %s wait %s fails (%d) %s",
-                                       target_name(target), n->name,
-                                       e, target_strerror_safe(e));
-                       return JIM_ERR;
-               } else {
-                       return JIM_OK;
-               }
-       case TS_CMD_EVENTLIST:
-               /* List for human, Events defined for this target.
-                * scripts/programs should use 'name cget -event NAME'
-                */
-               {
-                       struct target_event_action *teap;
-                       teap = target->event_action;
-                       command_print(cmd_ctx,
-                                       "Event actions for target (%d) %s\n",
-                                       target->target_number,
-                                       target_name(target));
-                       command_print(cmd_ctx, "%-25s | Body", "Event");
-                       command_print(cmd_ctx, "------------------------- | ----------------------------------------");
-                       while (teap) {
-                               command_print(cmd_ctx,
-                                                          "%-25s | %s",
-                                                          Jim_Nvp_value2name_simple(nvp_target_event, teap->event)->name,
-                                                          Jim_GetString(teap->body, NULL));
-                               teap = teap->next;
+                       for (; (x < 16) ; x += 1) {
+                               Jim_fprintf(interp, interp->cookie_stdout, "   ");
                        }
-                       command_print(cmd_ctx, "***END***");
-                       return JIM_OK;
-               }
-       case TS_CMD_CURSTATE:
-               if (goi.argc != 0) {
-                       Jim_WrongNumArgs(goi.interp, 0, argv, "[no parameters]");
-                       return JIM_ERR;
+                       break;
                }
-               Jim_SetResultString(goi.interp,
-                                                       target_state_name( target ),
-                                                       -1);
-               return JIM_OK;
-       case TS_CMD_INVOKE_EVENT:
-               if (goi.argc != 1) {
-                       Jim_SetResult_sprintf(goi.interp, "%s ?EVENTNAME?",n->name);
-                       return JIM_ERR;
+               /* 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] = '.';
+                       }
                }
-               e = Jim_GetOpt_Nvp(&goi, nvp_target_event, &n);
-               if (e != JIM_OK) {
-                       Jim_GetOpt_NvpUnknown(&goi, nvp_target_event, 1);
-                       return e;
+               /* space pad  */
+               while (x < 16) {
+                       target_buf[x] = ' ';
+                       x++;
                }
-               target_handle_event(target, n->value);
-               return JIM_OK;
+               /* terminate */
+               target_buf[16] = 0;
+               /* print - with a newline */
+               Jim_fprintf(interp, interp->cookie_stdout, "%s\n", target_buf);
+               /* NEXT... */
+               c -= 16;
+               a += 16;
        }
-       return JIM_ERR;
+       return JIM_OK;
+}
+
+static int jim_target_mem2array(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
+{
+       struct target *target = Jim_CmdPrivData(interp);
+       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);
+       return target_array2mem(interp, target, argc - 1, argv + 1);
+}
 
-err_tap_disabled:
+static int jim_target_tap_disabled(Jim_Interp *interp)
+{
        Jim_SetResult_sprintf(interp, "[TAP is disabled]");
        return JIM_ERR;
 }
 
+static int jim_target_examine(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
+{
+       if (argc != 1)
+       {
+               Jim_WrongNumArgs(interp, 1, argv, "[no parameters]");
+               return JIM_ERR;
+       }
+       struct target *target = Jim_CmdPrivData(interp);
+       if (!target->tap->enabled)
+               return jim_target_tap_disabled(interp);
+
+       int e = target->type->examine(target);
+       if (e != ERROR_OK)
+       {
+               Jim_SetResult_sprintf(interp, "examine-fails: %d", e);
+               return JIM_ERR;
+       }
+       return JIM_OK;
+}
+
+static int jim_target_poll(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
+{
+       if (argc != 1)
+       {
+               Jim_WrongNumArgs(interp, 1, argv, "[no parameters]");
+               return JIM_ERR;
+       }
+       struct target *target = Jim_CmdPrivData(interp);
+       if (!target->tap->enabled)
+               return jim_target_tap_disabled(interp);
+
+       int e;
+       if (!(target_was_examined(target))) {
+               e = ERROR_TARGET_NOT_EXAMINED;
+       } else {
+               e = target->type->poll(target);
+       }
+       if (e != ERROR_OK)
+       {
+               Jim_SetResult_sprintf(interp, "poll-fails: %d", e);
+               return JIM_ERR;
+       }
+       return JIM_OK;
+}
+
+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);
+
+       if (goi.argc != 2)
+       {
+               Jim_WrongNumArgs(interp, 0, argv,
+                               "([tT]|[fF]|assert|deassert) BOOL");
+               return JIM_ERR;
+       }
+
+       Jim_Nvp *n;
+       int e = Jim_GetOpt_Nvp(&goi, nvp_assert, &n);
+       if (e != JIM_OK)
+       {
+               Jim_GetOpt_NvpUnknown(&goi, nvp_assert, 1);
+               return e;
+       }
+       /* the halt or not param */
+       jim_wide a;
+       e = Jim_GetOpt_Wide(&goi, &a);
+       if (e != JIM_OK)
+               return e;
+
+       struct target *target = Jim_CmdPrivData(goi.interp);
+       if (!target->tap->enabled)
+               return jim_target_tap_disabled(interp);
+       if (!target->type->assert_reset || !target->type->deassert_reset)
+       {
+               Jim_SetResult_sprintf(interp,
+                               "No target-specific reset for %s",
+                               target_name(target));
+               return JIM_ERR;
+       }
+       /* determine if we should halt or not. */
+       target->reset_halt = !!a;
+       /* When this happens - all workareas are invalid. */
+       target_free_all_working_areas_restore(target, 0);
+
+       /* do the assert */
+       if (n->value == NVP_ASSERT) {
+               e = target->type->assert_reset(target);
+       } else {
+               e = target->type->deassert_reset(target);
+       }
+       return (e == ERROR_OK) ? JIM_OK : JIM_ERR;
+}
+
+static int jim_target_halt(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
+{
+       if (argc != 1) {
+               Jim_WrongNumArgs(interp, 1, argv, "[no parameters]");
+               return JIM_ERR;
+       }
+       struct target *target = Jim_CmdPrivData(interp);
+       if (!target->tap->enabled)
+               return jim_target_tap_disabled(interp);
+       int e = target->type->halt(target);
+       return (e == ERROR_OK) ? JIM_OK : JIM_ERR;
+}
+
+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);
+
+       /* params:  <name>  statename timeoutmsecs */
+       if (goi.argc != 2)
+       {
+               const char *cmd_name = Jim_GetString(argv[0], NULL);
+               Jim_SetResult_sprintf(goi.interp,
+                               "%s <state_name> <timeout_in_msec>", cmd_name);
+               return JIM_ERR;
+       }
+
+       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);
+               return e;
+       }
+       jim_wide a;
+       e = Jim_GetOpt_Wide(&goi, &a);
+       if (e != JIM_OK) {
+               return e;
+       }
+       struct target *target = Jim_CmdPrivData(interp);
+       if (!target->tap->enabled)
+               return jim_target_tap_disabled(interp);
+
+       e = target_wait_state(target, n->value, a);
+       if (e != ERROR_OK)
+       {
+               Jim_SetResult_sprintf(goi.interp,
+                               "target: %s wait %s fails (%d) %s",
+                               target_name(target), n->name,
+                               e, target_strerror_safe(e));
+               return JIM_ERR;
+       }
+       return JIM_OK;
+}
+/* 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)
+{
+       struct command_context *cmd_ctx = Jim_GetAssocData(interp, "context");
+       struct target *target = Jim_CmdPrivData(interp);
+       struct target_event_action *teap = target->event_action;
+       command_print(cmd_ctx, "Event actions for target (%d) %s\n",
+                                  target->target_number,
+                                  target_name(target));
+       command_print(cmd_ctx, "%-25s | Body", "Event");
+       command_print(cmd_ctx, "------------------------- | "
+                       "----------------------------------------");
+       while (teap)
+       {
+               Jim_Nvp *opt = Jim_Nvp_value2name_simple(nvp_target_event, teap->event);
+               command_print(cmd_ctx, "%-25s | %s",
+                               opt->name, Jim_GetString(teap->body, NULL));
+               teap = teap->next;
+       }
+       command_print(cmd_ctx, "***END***");
+       return JIM_OK;
+}
+static int jim_target_current_state(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
+{
+       if (argc != 1)
+       {
+               Jim_WrongNumArgs(interp, 1, argv, "[no parameters]");
+               return JIM_ERR;
+       }
+       struct target *target = Jim_CmdPrivData(interp);
+       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);
+       if (goi.argc != 1)
+       {
+               const char *cmd_name = Jim_GetString(argv[0], NULL);
+               Jim_SetResult_sprintf(goi.interp, "%s <eventname>", cmd_name);
+               return JIM_ERR;
+       }
+       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);
+               return e;
+       }
+       struct target *target = Jim_CmdPrivData(interp);
+       target_handle_event(target, n->value);
+       return JIM_OK;
+}
+
+static const struct command_registration target_instance_command_handlers[] = {
+       {
+               .name = "configure",
+               .mode = COMMAND_CONFIG,
+               .jim_handler = &jim_target_configure,
+               .usage = "[<target_options> ...]",
+               .help  = "configure a new target for use",
+       },
+       {
+               .name = "cget",
+               .mode = COMMAND_ANY,
+               .jim_handler = &jim_target_configure,
+               .usage = "<target_type> [<target_options> ...]",
+               .help  = "configure a new target for use",
+       },
+       {
+               .name = "mww",
+               .mode = COMMAND_EXEC,
+               .jim_handler = &jim_target_mw,
+               .usage = "<address> <data> [<count>]",
+               .help = "Write 32-bit word(s) to target memory",
+       },
+       {
+               .name = "mwh",
+               .mode = COMMAND_EXEC,
+               .jim_handler = &jim_target_mw,
+               .usage = "<address> <data> [<count>]",
+               .help = "Write 16-bit half-word(s) to target memory",
+       },
+       {
+               .name = "mwb",
+               .mode = COMMAND_EXEC,
+               .jim_handler = &jim_target_mw,
+               .usage = "<address> <data> [<count>]",
+               .help = "Write byte(s) to target memory",
+       },
+       {
+               .name = "mdw",
+               .mode = COMMAND_EXEC,
+               .jim_handler = &jim_target_md,
+               .usage = "<address> [<count>]",
+               .help = "Display target memory as 32-bit words",
+       },
+       {
+               .name = "mdh",
+               .mode = COMMAND_EXEC,
+               .jim_handler = &jim_target_md,
+               .usage = "<address> [<count>]",
+               .help = "Display target memory as 16-bit half-words",
+       },
+       {
+               .name = "mdb",
+               .mode = COMMAND_EXEC,
+               .jim_handler = &jim_target_md,
+               .usage = "<address> [<count>]",
+               .help = "Display target memory as 8-bit bytes",
+       },
+       {
+               .name = "array2mem",
+               .mode = COMMAND_EXEC,
+               .jim_handler = &jim_target_array2mem,
+       },
+       {
+               .name = "mem2array",
+               .mode = COMMAND_EXEC,
+               .jim_handler = &jim_target_mem2array,
+       },
+       {
+               .name = "eventlist",
+               .mode = COMMAND_EXEC,
+               .jim_handler = &jim_target_event_list,
+       },
+       {
+               .name = "curstate",
+               .mode = COMMAND_EXEC,
+               .jim_handler = &jim_target_current_state,
+       },
+       {
+               .name = "arp_examine",
+               .mode = COMMAND_EXEC,
+               .jim_handler = &jim_target_examine,
+       },
+       {
+               .name = "arp_poll",
+               .mode = COMMAND_EXEC,
+               .jim_handler = &jim_target_poll,
+       },
+       {
+               .name = "arp_reset",
+               .mode = COMMAND_EXEC,
+               .jim_handler = &jim_target_reset,
+       },
+       {
+               .name = "arp_halt",
+               .mode = COMMAND_EXEC,
+               .jim_handler = &jim_target_halt,
+       },
+       {
+               .name = "arp_waitstate",
+               .mode = COMMAND_EXEC,
+               .jim_handler = &jim_target_wait_state,
+       },
+       {
+               .name = "invoke-event",
+               .mode = COMMAND_EXEC,
+               .jim_handler = &jim_target_invoke_event,
+       },
+       COMMAND_REGISTRATION_DONE
+};
+
 static int target_create(Jim_GetOptInfo *goi)
 {
        Jim_Obj *new_cmd;
@@ -4412,16 +4527,35 @@ static int target_create(Jim_GetOptInfo *goi)
                }
                *tpp = target;
        }
-
+       
        /* now - create the new target name command */
-       const struct command_registration target_command = {
-               .name = cp,
-               .jim_handler = &tcl_target_func,
-               .jim_handler_data = target,
-               .help = "target command group",
+       const const struct command_registration target_subcommands[] = {
+               {
+                       .chain = target_instance_command_handlers,
+               },
+               {
+                       .chain = target->type->commands,
+               },
+               COMMAND_REGISTRATION_DONE
        };
-       struct command *c = register_command(cmd_ctx, NULL, &target_command);
-       return (NULL != c) ? ERROR_OK : ERROR_FAIL;
+       const const struct command_registration target_commands[] = {
+               {
+                       .name = cp,
+                       .mode = COMMAND_ANY,
+                       .help = "target command group",
+                       .chain = target_subcommands,
+               },
+               COMMAND_REGISTRATION_DONE
+       };
+       e = register_commands(cmd_ctx, NULL, target_commands);
+       if (ERROR_OK != e)
+               return JIM_ERR;
+
+       struct command *c = command_find_in_context(cmd_ctx, cp);
+       assert(c);
+       command_set_handler_data(c, target);
+
+       return (ERROR_OK == e) ? JIM_OK : JIM_ERR;
 }
 
 static int jim_target_current(Jim_Interp *interp, int argc, Jim_Obj *const *argv)