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"Antonio Borneo <borneo.anto...@gmail.com>" just uploaded a new patch set to 
Gerrit, which you can find at https://review.openocd.org/c/openocd/+/8583

-- gerrit

commit b8b2e3ed4b12adbd5b43cc6a86ecf21e07327100
Author: Antonio Borneo <borneo.anto...@gmail.com>
Date:   Sat Dec 2 15:04:09 2023 +0100

    target: rewrite command 'get_reg' as COMMAND_HANDLER
    
    Print one register per line. Repeated registers will be printed
    each time.
    While there, fix the 'usage' string.
    
    Change-Id: I4eb21696705bdf15cd2cb7a4a9caa41f9ffdbf64
    Signed-off-by: Antonio Borneo <borneo.anto...@gmail.com>

diff --git a/src/target/target.c b/src/target/target.c
index 0788897078..de6d89429b 100644
--- a/src/target/target.c
+++ b/src/target/target.c
@@ -4696,63 +4696,46 @@ void target_handle_event(struct target *target, enum 
target_event e)
        }
 }
 
-static int target_jim_get_reg(Jim_Interp *interp, int argc,
-               Jim_Obj * const *argv)
+COMMAND_HANDLER(handle_target_get_reg)
 {
-       bool force = false;
+       if (CMD_ARGC < 1 || CMD_ARGC > 2)
+               return ERROR_COMMAND_SYNTAX_ERROR;
 
-       if (argc == 3) {
-               const char *option = Jim_GetString(argv[1], NULL);
+       bool force = false;
+       Jim_Obj *next_argv = CMD_JIMTCL_ARGV[0];
 
-               if (!strcmp(option, "-force")) {
-                       argc--;
-                       argv++;
-                       force = true;
-               } else {
-                       Jim_SetResultFormatted(interp, "invalid option '%s'", 
option);
-                       return JIM_ERR;
+       if (CMD_ARGC == 2) {
+               if (strcmp(CMD_ARGV[0], "-force")) {
+                       command_print(CMD, "invalid argument '%s', must be 
'-force'", CMD_ARGV[0]);
+                       return ERROR_COMMAND_ARGUMENT_INVALID;
                }
-       }
 
-       if (argc != 2) {
-               Jim_WrongNumArgs(interp, 1, argv, "[-force] list");
-               return JIM_ERR;
+               force = true;
+               next_argv = CMD_JIMTCL_ARGV[1];
        }
 
-       const int length = Jim_ListLength(interp, argv[1]);
+       const int length = Jim_ListLength(CMD_CTX->interp, next_argv);
 
-       Jim_Obj *result_dict = Jim_NewDictObj(interp, NULL, 0);
-
-       if (!result_dict)
-               return JIM_ERR;
-
-       struct command_context *cmd_ctx = current_command_context(interp);
-       assert(cmd_ctx);
-       const struct target *target = get_current_target(cmd_ctx);
+       const struct target *target = get_current_target(CMD_CTX);
 
        for (int i = 0; i < length; i++) {
-               Jim_Obj *elem = Jim_ListGetIndex(interp, argv[1], i);
-
-               if (!elem)
-                       return JIM_ERR;
+               Jim_Obj *elem = Jim_ListGetIndex(CMD_CTX->interp, next_argv, i);
 
                const char *reg_name = Jim_String(elem);
 
-               struct reg *reg = register_get_by_name(target->reg_cache, 
reg_name,
-                       false);
+               struct reg *reg = register_get_by_name(target->reg_cache, 
reg_name, false);
 
                if (!reg || !reg->exist) {
-                       Jim_SetResultFormatted(interp, "unknown register '%s'", 
reg_name);
-                       return JIM_ERR;
+                       command_print(CMD, "unknown register '%s'", reg_name);
+                       return ERROR_COMMAND_ARGUMENT_INVALID;
                }
 
                if (force || !reg->valid) {
                        int retval = reg->type->get(reg);
 
                        if (retval != ERROR_OK) {
-                               Jim_SetResultFormatted(interp, "failed to read 
register '%s'",
-                                       reg_name);
-                               return JIM_ERR;
+                               command_print(CMD, "failed to read register 
'%s'", reg_name);
+                               return retval;
                        }
                }
 
@@ -4760,27 +4743,15 @@ static int target_jim_get_reg(Jim_Interp *interp, int 
argc,
 
                if (!reg_value) {
                        LOG_ERROR("Failed to allocate memory");
-                       return JIM_ERR;
+                       return ERROR_FAIL;
                }
 
-               char *tmp = alloc_printf("0x%s", reg_value);
+               command_print(CMD, "%s 0x%s", reg_name, reg_value);
 
                free(reg_value);
-
-               if (!tmp) {
-                       LOG_ERROR("Failed to allocate memory");
-                       return JIM_ERR;
-               }
-
-               Jim_DictAddElement(interp, result_dict, elem,
-                       Jim_NewStringObj(interp, tmp, -1));
-
-               free(tmp);
        }
 
-       Jim_SetResult(interp, result_dict);
-
-       return JIM_OK;
+       return ERROR_OK;
 }
 
 COMMAND_HANDLER(handle_set_reg_command)
@@ -5572,9 +5543,9 @@ static const struct command_registration 
target_instance_command_handlers[] = {
        {
                .name = "get_reg",
                .mode = COMMAND_EXEC,
-               .jim_handler = target_jim_get_reg,
+               .handler = handle_target_get_reg,
                .help = "Get register values from the target",
-               .usage = "list",
+               .usage = "[-force] list",
        },
        {
                .name = "set_reg",
@@ -6707,9 +6678,9 @@ static const struct command_registration 
target_exec_command_handlers[] = {
        {
                .name = "get_reg",
                .mode = COMMAND_EXEC,
-               .jim_handler = target_jim_get_reg,
+               .handler = handle_target_get_reg,
                .help = "Get register values from the target",
-               .usage = "list",
+               .usage = "[-force] list",
        },
        {
                .name = "set_reg",

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