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openocd/src/helper/command.c

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/***************************************************************************
* Copyright (C) 2005 by Dominic Rath *
* Dominic.Rath@gmx.de *
* *
* Copyright (C) 2007,2008 Øyvind Harboe *
* oyvind.harboe@zylin.com *
* *
* Copyright (C) 2008, Duane Ellis *
* openocd@duaneeellis.com *
* *
* part of this file is taken from libcli (libcli.sourceforge.net) *
* Copyright (C) David Parrish (david@dparrish.com) *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the *
* Free Software Foundation, Inc., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
***************************************************************************/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#if !BUILD_ECOSBOARD
/* see Embedder-HOWTO.txt in Jim Tcl project hosted on BerliOS*/
#define JIM_EMBEDDED
#endif
// @todo the inclusion of target.h here is a layering violation
#include <jtag/jtag.h>
#include <target/target.h>
#include "command.h"
#include "configuration.h"
#include "log.h"
#include "time_support.h"
#include "jim-eventloop.h"
/* nice short description of source file */
#define __THIS__FILE__ "command.c"
static int run_command(struct command_context *context,
struct command *c, const char *words[], unsigned num_words);
struct log_capture_state {
Jim_Interp *interp;
Jim_Obj *output;
};
static void tcl_output(void *privData, const char *file, unsigned line,
const char *function, const char *string)
{
struct log_capture_state *state = (struct log_capture_state *)privData;
Jim_AppendString(state->interp, state->output, string, strlen(string));
}
static struct log_capture_state *command_log_capture_start(Jim_Interp *interp)
{
/* capture log output and return it. A garbage collect can
* happen, so we need a reference count to this object */
Jim_Obj *tclOutput = Jim_NewStringObj(interp, "", 0);
if (NULL == tclOutput)
return NULL;
struct log_capture_state *state = malloc(sizeof(*state));
if (NULL == state)
return NULL;
state->interp = interp;
Jim_IncrRefCount(tclOutput);
state->output = tclOutput;
log_add_callback(tcl_output, state);
return state;
}
/* Classic openocd commands provide progress output which we
* will capture and return as a Tcl return value.
*
* However, if a non-openocd command has been invoked, then it
* makes sense to return the tcl return value from that command.
*
* The tcl return value is empty for openocd commands that provide
* progress output.
*
* Therefore we set the tcl return value only if we actually
* captured output.
*/
static void command_log_capture_finish(struct log_capture_state *state)
{
if (NULL == state)
return;
log_remove_callback(tcl_output, state);
int length;
Jim_GetString(state->output, &length);
if (length > 0)
{
Jim_SetResult(state->interp, state->output);
} else
{
/* No output captured, use tcl return value (which could
* be empty too). */
}
Jim_DecrRefCount(state->interp, state->output);
free(state);
}
static int command_retval_set(Jim_Interp *interp, int retval)
{
int *return_retval = Jim_GetAssocData(interp, "retval");
if (return_retval != NULL)
*return_retval = retval;
return (retval == ERROR_OK) ? JIM_OK : JIM_ERR;
}
extern struct command_context *global_cmd_ctx;
/* dump a single line to the log for the command.
* Do nothing in case we are not at debug level 3 */
void script_debug(Jim_Interp *interp, const char *name,
unsigned argc, Jim_Obj *const *argv)
{
if (debug_level < LOG_LVL_DEBUG)
return;
char * dbg = alloc_printf("command - %s", name);
for (unsigned i = 0; i < argc; i++)
{
int len;
const char *w = Jim_GetString(argv[i], &len);
/* end of line comment? */
if (*w == '#')
break;
char * t = alloc_printf("%s %s", dbg, w);
free (dbg);
dbg = t;
}
LOG_DEBUG("%s", dbg);
free(dbg);
}
static void script_command_args_free(const char **words, unsigned nwords)
{
for (unsigned i = 0; i < nwords; i++)
free((void *)words[i]);
free(words);
}
static const char **script_command_args_alloc(
unsigned argc, Jim_Obj *const *argv, unsigned *nwords)
{
const char **words = malloc(argc * sizeof(char *));
if (NULL == words)
return NULL;
unsigned i;
for (i = 0; i < argc; i++)
{
int len;
const char *w = Jim_GetString(argv[i], &len);
/* a comment may end the line early */
if (*w == '#')
break;
words[i] = strdup(w);
if (words[i] == NULL)
{
script_command_args_free(words, i);
return NULL;
}
}
*nwords = i;
return words;
}
struct command_context *current_command_context(Jim_Interp *interp)
{
/* grab the command context from the associated data */
struct command_context *cmd_ctx = Jim_GetAssocData(interp, "context");
if (NULL == cmd_ctx)
{
/* Tcl can invoke commands directly instead of via command_run_line(). This would
* happen when the Jim Tcl interpreter is provided by eCos or if we are running
* commands in a startup script.
*
* A telnet or gdb server would provide a non-default command context to
* handle piping of error output, have a separate current target, etc.
*/
cmd_ctx = global_cmd_ctx;
}
return cmd_ctx;
}
static int script_command_run(Jim_Interp *interp,
int argc, Jim_Obj *const *argv, struct command *c, bool capture)
{
target_call_timer_callbacks_now();
LOG_USER_N("%s", ""); /* Keep GDB connection alive*/
unsigned nwords;
const char **words = script_command_args_alloc(argc, argv, &nwords);
if (NULL == words)
return JIM_ERR;
struct log_capture_state *state = NULL;
if (capture)
state = command_log_capture_start(interp);
struct command_context *cmd_ctx = current_command_context(interp);
int retval = run_command(cmd_ctx, c, (const char **)words, nwords);
command_log_capture_finish(state);
script_command_args_free(words, nwords);
return command_retval_set(interp, retval);
}
static int script_command(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
{
/* the private data is stashed in the interp structure */
struct command *c = interp->cmdPrivData;
assert(c);
script_debug(interp, c->name, argc, argv);
return script_command_run(interp, argc, argv, c, true);
}
static struct command *command_root(struct command *c)
{
while (NULL != c->parent)
c = c->parent;
return c;
}
/**
* Find a command by name from a list of commands.
* @returns Returns the named command if it exists in the list.
* Returns NULL otherwise.
*/
static struct command *command_find(struct command *head, const char *name)
{
for (struct command *cc = head; cc; cc = cc->next)
{
if (strcmp(cc->name, name) == 0)
return cc;
}
return NULL;
}
struct command *command_find_in_context(struct command_context *cmd_ctx,
const char *name)
{
return command_find(cmd_ctx->commands, name);
}
struct command *command_find_in_parent(struct command *parent,
const char *name)
{
return command_find(parent->children, name);
}
/**
* Add the command into the linked list, sorted by name.
* @param head Address to head of command list pointer, which may be
* updated if @c c gets inserted at the beginning of the list.
* @param c The command to add to the list pointed to by @c head.
*/
static void command_add_child(struct command **head, struct command *c)
{
assert(head);
if (NULL == *head)
{
*head = c;
return;
}
while ((*head)->next && (strcmp(c->name, (*head)->name) > 0))
head = &(*head)->next;
if (strcmp(c->name, (*head)->name) > 0) {
c->next = (*head)->next;
(*head)->next = c;
} else {
c->next = *head;
*head = c;
}
}
static struct command **command_list_for_parent(
struct command_context *cmd_ctx, struct command *parent)
{
return parent ? &parent->children : &cmd_ctx->commands;
}
static void command_free(struct command *c)
{
/// @todo if command has a handler, unregister its jim command!
while (NULL != c->children)
{
struct command *tmp = c->children;
c->children = tmp->next;
command_free(tmp);
}
if (c->name)
free(c->name);
if (c->help)
free((void*)c->help);
if (c->usage)
free((void*)c->usage);
free(c);
}
static struct command *command_new(struct command_context *cmd_ctx,
struct command *parent, const struct command_registration *cr)
{
assert(cr->name);
struct command *c = calloc(1, sizeof(struct command));
if (NULL == c)
return NULL;
c->name = strdup(cr->name);
if (cr->help)
c->help = strdup(cr->help);
if (cr->usage)
c->usage = strdup(cr->usage);
if (!c->name || (cr->help && !c->help) || (cr->usage && !c->usage))
goto command_new_error;
c->parent = parent;
c->handler = cr->handler;
c->jim_handler = cr->jim_handler;
c->jim_handler_data = cr->jim_handler_data;
c->mode = cr->mode;
command_add_child(command_list_for_parent(cmd_ctx, parent), c);
return c;
command_new_error:
command_free(c);
return NULL;
}
static int command_unknown(Jim_Interp *interp, int argc, Jim_Obj *const *argv);
static int register_command_handler(struct command_context *cmd_ctx,
struct command *c)
{
Jim_Interp *interp = cmd_ctx->interp;
const char *ocd_name = alloc_printf("ocd_%s", c->name);
if (NULL == ocd_name)
return JIM_ERR;
LOG_DEBUG("registering '%s'...", ocd_name);
Jim_CmdProc func = c->handler ? &script_command : &command_unknown;
int retval = Jim_CreateCommand(interp, ocd_name, func, c, NULL);
free((void *)ocd_name);
if (JIM_OK != retval)
return retval;
/* we now need to add an overrideable proc */
const char *override_name = alloc_printf(
"proc %s {args} {eval ocd_bouncer %s $args}",
c->name, c->name);
if (NULL == override_name)
return JIM_ERR;
retval = Jim_Eval_Named(interp, override_name, 0, 0);
free((void *)override_name);
return retval;
}
struct command* register_command(struct command_context *context,
struct command *parent, const struct command_registration *cr)
{
if (!context || !cr->name)
return NULL;
const char *name = cr->name;
struct command **head = command_list_for_parent(context, parent);
struct command *c = command_find(*head, name);
if (NULL != c)
{
/* TODO: originally we treated attempting to register a cmd twice as an error
* Sometimes we need this behaviour, such as with flash banks.
* http://www.mail-archive.com/openocd-development@lists.berlios.de/msg11152.html */
LOG_DEBUG("command '%s' is already registered in '%s' context",
name, parent ? parent->name : "<global>");
return c;
}
c = command_new(context, parent, cr);
if (NULL == c)
return NULL;
int retval = ERROR_OK;
if (NULL != cr->jim_handler && NULL == parent)
{
retval = Jim_CreateCommand(context->interp, cr->name,
cr->jim_handler, cr->jim_handler_data, NULL);
}
else if (NULL != cr->handler || NULL != parent)
retval = register_command_handler(context, command_root(c));
if (ERROR_OK != retval)
{
unregister_command(context, parent, name);
c = NULL;
}
return c;
}
int register_commands(struct command_context *cmd_ctx, struct command *parent,
const struct command_registration *cmds)
{
int retval = ERROR_OK;
unsigned i;
for (i = 0; cmds[i].name || cmds[i].chain; i++)
{
const struct command_registration *cr = cmds + i;
struct command *c = NULL;
if (NULL != cr->name)
{
c = register_command(cmd_ctx, parent, cr);
if (NULL == c)
{
retval = ERROR_FAIL;
break;
}
}
if (NULL != cr->chain)
{
struct command *p = c ? : parent;
retval = register_commands(cmd_ctx, p, cr->chain);
if (ERROR_OK != retval)
break;
}
}
if (ERROR_OK != retval)
{
for (unsigned j = 0; j < i; j++)
unregister_command(cmd_ctx, parent, cmds[j].name);
}
return retval;
}
int unregister_all_commands(struct command_context *context,
struct command *parent)
{
if (context == NULL)
return ERROR_OK;
struct command **head = command_list_for_parent(context, parent);
while (NULL != *head)
{
struct command *tmp = *head;
*head = tmp->next;
command_free(tmp);
}
return ERROR_OK;
}
int unregister_command(struct command_context *context,
struct command *parent, const char *name)
{
if ((!context) || (!name))
return ERROR_INVALID_ARGUMENTS;
struct command *p = NULL;
struct command **head = command_list_for_parent(context, parent);
for (struct command *c = *head; NULL != c; p = c, c = c->next)
{
if (strcmp(name, c->name) != 0)
continue;
if (p)
p->next = c->next;
else
*head = c->next;
command_free(c);
return ERROR_OK;
}
return ERROR_OK;
}
void command_set_handler_data(struct command *c, void *p)
{
if (NULL != c->handler || NULL != c->jim_handler)
c->jim_handler_data = p;
for (struct command *cc = c->children; NULL != cc; cc = cc->next)
command_set_handler_data(cc, p);
}
void command_output_text(struct command_context *context, const char *data)
{
if (context && context->output_handler && data) {
context->output_handler(context, data);
}
}
void command_print_sameline(struct command_context *context, const char *format, ...)
{
char *string;
va_list ap;
va_start(ap, format);
string = alloc_vprintf(format, ap);
if (string != NULL)
{
/* we want this collected in the log + we also want to pick it up as a tcl return
* value.
*
* The latter bit isn't precisely neat, but will do for now.
*/
LOG_USER_N("%s", string);
/* We already printed it above */
/* command_output_text(context, string); */
free(string);
}
va_end(ap);
}
void command_print(struct command_context *context, const char *format, ...)
{
char *string;
va_list ap;
va_start(ap, format);
string = alloc_vprintf(format, ap);
if (string != NULL)
{
strcat(string, "\n"); /* alloc_vprintf guaranteed the buffer to be at least one char longer */
/* we want this collected in the log + we also want to pick it up as a tcl return
* value.
*
* The latter bit isn't precisely neat, but will do for now.
*/
LOG_USER_N("%s", string);
/* We already printed it above */
/* command_output_text(context, string); */
free(string);
}
va_end(ap);
}
static char *__command_name(struct command *c, char delim, unsigned extra)
{
char *name;
unsigned len = strlen(c->name);
if (NULL == c->parent) {
// allocate enough for the name, child names, and '\0'
name = malloc(len + extra + 1);
strcpy(name, c->name);
} else {
// parent's extra must include both the space and name
name = __command_name(c->parent, delim, 1 + len + extra);
char dstr[2] = { delim, 0 };
strcat(name, dstr);
strcat(name, c->name);
}
return name;
}
char *command_name(struct command *c, char delim)
{
return __command_name(c, delim, 0);
}
static bool command_can_run(struct command_context *cmd_ctx, struct command *c)
{
return c->mode == COMMAND_ANY || c->mode == cmd_ctx->mode;
}
static int run_command(struct command_context *context,
struct command *c, const char *words[], unsigned num_words)
{
if (!command_can_run(context, c))
{
/* Many commands may be run only before/after 'init' */
const char *when;
switch (c->mode) {
case COMMAND_CONFIG: when = "before"; break;
case COMMAND_EXEC: when = "after"; break;
// handle the impossible with humor; it guarantees a bug report!
default: when = "if Cthulhu is summoned by"; break;
}
LOG_ERROR("The '%s' command must be used %s 'init'.",
c->name, when);
return ERROR_FAIL;
}
struct command_invocation cmd = {
.ctx = context,
.current = c,
.name = c->name,
.argc = num_words - 1,
.argv = words + 1,
};
int retval = c->handler(&cmd);
if (retval == ERROR_COMMAND_SYNTAX_ERROR)
{
/* Print help for command */
char *full_name = command_name(c, ' ');
if (NULL != full_name) {
command_run_linef(context, "usage %s", full_name);
free(full_name);
} else
retval = -ENOMEM;
}
else if (retval == ERROR_COMMAND_CLOSE_CONNECTION)
{
/* just fall through for a shutdown request */
}
else if (retval != ERROR_OK)
{
/* we do not print out an error message because the command *should*
* have printed out an error
*/
LOG_DEBUG("Command failed with error code %d", retval);
}
return retval;
}
int command_run_line(struct command_context *context, char *line)
{
/* all the parent commands have been registered with the interpreter
* so, can just evaluate the line as a script and check for
* results
*/
/* run the line thru a script engine */
int retval = ERROR_FAIL;
int retcode;
/* Beware! This code needs to be reentrant. It is also possible
* for OpenOCD commands to be invoked directly from Tcl. This would
* happen when the Jim Tcl interpreter is provided by eCos for
* instance.
*/
Jim_Interp *interp = context->interp;
Jim_DeleteAssocData(interp, "context");
retcode = Jim_SetAssocData(interp, "context", NULL, context);
if (retcode == JIM_OK)
{
/* associated the return value */
Jim_DeleteAssocData(interp, "retval");
retcode = Jim_SetAssocData(interp, "retval", NULL, &retval);
if (retcode == JIM_OK)
{
retcode = Jim_Eval_Named(interp, line, 0, 0);
Jim_DeleteAssocData(interp, "retval");
}
Jim_DeleteAssocData(interp, "context");
}
if (retcode == JIM_ERR) {
if (retval != ERROR_COMMAND_CLOSE_CONNECTION)
{
/* We do not print the connection closed error message */
Jim_MakeErrorMessage(interp);
LOG_USER_N("%s\n", Jim_GetString(Jim_GetResult(interp), NULL));
}
if (retval == ERROR_OK)
{
/* It wasn't a low level OpenOCD command that failed */
return ERROR_FAIL;
}
return retval;
} else if (retcode == JIM_EXIT) {
/* ignore. */
/* exit(Jim_GetExitCode(interp)); */
} else {
const char *result;
int reslen;
result = Jim_GetString(Jim_GetResult(interp), &reslen);
if (reslen > 0)
{
int i;
char buff[256 + 1];
for (i = 0; i < reslen; i += 256)
{
int chunk;
chunk = reslen - i;
if (chunk > 256)
chunk = 256;
strncpy(buff, result + i, chunk);
buff[chunk] = 0;
LOG_USER_N("%s", buff);
}
LOG_USER_N("%s", "\n");
}
retval = ERROR_OK;
}
return retval;
}
int command_run_linef(struct command_context *context, const char *format, ...)
{
int retval = ERROR_FAIL;
char *string;
va_list ap;
va_start(ap, format);
string = alloc_vprintf(format, ap);
if (string != NULL)
{
retval = command_run_line(context, string);
}
va_end(ap);
return retval;
}
void command_set_output_handler(struct command_context* context,
command_output_handler_t output_handler, void *priv)
{
context->output_handler = output_handler;
context->output_handler_priv = priv;
}
struct command_context* copy_command_context(struct command_context* context)
{
struct command_context* copy_context = malloc(sizeof(struct command_context));
*copy_context = *context;
return copy_context;
}
void command_done(struct command_context *cmd_ctx)
{
if (NULL == cmd_ctx)
return;
free(cmd_ctx);
}
/* find full path to file */
static int jim_find(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
{
if (argc != 2)
return JIM_ERR;
const char *file = Jim_GetString(argv[1], NULL);
char *full_path = find_file(file);
if (full_path == NULL)
return JIM_ERR;
Jim_Obj *result = Jim_NewStringObj(interp, full_path, strlen(full_path));
free(full_path);
Jim_SetResult(interp, result);
return JIM_OK;
}
static int jim_echo(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
{
if (argc != 2)
return JIM_ERR;
const char *str = Jim_GetString(argv[1], NULL);
LOG_USER("%s", str);
return JIM_OK;
}
/* Capture progress output and return as tcl return value. If the
* progress output was empty, return tcl return value.
*/
static int jim_capture(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
{
if (argc != 2)
return JIM_ERR;
struct log_capture_state *state = command_log_capture_start(interp);
/* disable polling during capture. This avoids capturing output
* from polling.
*
* This is necessary in order to avoid accidentially getting a non-empty
* string for tcl fn's.
*/
bool save_poll = jtag_poll_get_enabled();
jtag_poll_set_enabled(false);
const char *str = Jim_GetString(argv[1], NULL);
int retcode = Jim_Eval_Named(interp, str, __THIS__FILE__, __LINE__);
jtag_poll_set_enabled(save_poll);
command_log_capture_finish(state);
return retcode;
}
static COMMAND_HELPER(command_help_find, struct command *head,
struct command **out)
{
if (0 == CMD_ARGC)
return ERROR_INVALID_ARGUMENTS;
*out = command_find(head, CMD_ARGV[0]);
if (NULL == *out && strncmp(CMD_ARGV[0], "ocd_", 4) == 0)
*out = command_find(head, CMD_ARGV[0] + 4);
if (NULL == *out)
return ERROR_INVALID_ARGUMENTS;
if (--CMD_ARGC == 0)
return ERROR_OK;
CMD_ARGV++;
return CALL_COMMAND_HANDLER(command_help_find, (*out)->children, out);
}
static COMMAND_HELPER(command_help_show, struct command *c, unsigned n,
bool show_help, const char *match);
static COMMAND_HELPER(command_help_show_list, struct command *head, unsigned n,
bool show_help, const char *match)
{
for (struct command *c = head; NULL != c; c = c->next)
CALL_COMMAND_HANDLER(command_help_show, c, n, show_help, match);
return ERROR_OK;
}
#define HELP_LINE_WIDTH(_n) (int)(76 - (2 * _n))
static void command_help_show_indent(unsigned n)
{
for (unsigned i = 0; i < n; i++)
LOG_USER_N(" ");
}
static void command_help_show_wrap(const char *str, unsigned n, unsigned n2)
{
const char *cp = str, *last = str;
while (*cp)
{
const char *next = last;
do {
cp = next;
do {
next++;
} while (*next != ' ' && *next != '\t' && *next != '\0');
} while ((next - last < HELP_LINE_WIDTH(n)) && *next != '\0');
if (next - last < HELP_LINE_WIDTH(n))
cp = next;
command_help_show_indent(n);
LOG_USER_N("%.*s", (int)(cp - last), last);
LOG_USER_N("\n");
last = cp + 1;
n = n2;
}
}
static COMMAND_HELPER(command_help_show, struct command *c, unsigned n,
bool show_help, const char *match)
{
char *cmd_name = command_name(c, ' ');
if (NULL == cmd_name)
return -ENOMEM;
/* If the match string occurs anywhere, we print out
* stuff for this command. */
bool is_match = (strstr(cmd_name, match) != NULL) ||
((c->usage != NULL) && (strstr(c->usage, match) != NULL)) ||
((c->help != NULL) && (strstr(c->help, match) != NULL));
if (is_match)
{
command_help_show_indent(n);
LOG_USER_N("%s", cmd_name);
}
free(cmd_name);
if (is_match)
{
if (c->usage) {
LOG_USER_N(" ");
command_help_show_wrap(c->usage, 0, n + 5);
}
else
LOG_USER_N("\n");
}
if (is_match && show_help)
{
char *msg;
/* Normal commands are runtime-only; highlight exceptions */
if (c->mode != COMMAND_EXEC) {
const char *stage_msg = "";
switch (c->mode) {
case COMMAND_CONFIG:
stage_msg = " (configuration command)";
break;
case COMMAND_ANY:
stage_msg = " (command valid any time)";
break;
default:
stage_msg = " (?mode error?)";
break;
}
msg = alloc_printf("%s%s", c->help ? : "", stage_msg);
} else
msg = alloc_printf("%s", c->help ? : "");
if (NULL != msg)
{
command_help_show_wrap(msg, n + 3, n + 3);
free(msg);
} else
return -ENOMEM;
}
if (++n >= 2)
return ERROR_OK;
return CALL_COMMAND_HANDLER(command_help_show_list,
c->children, n, show_help, match);
}
COMMAND_HANDLER(handle_help_command)
{
bool full = strcmp(CMD_NAME, "help") == 0;
int retval;
struct command *c = CMD_CTX->commands;
char *match = NULL;
if (CMD_ARGC == 0)
match = "";
else if (CMD_ARGC >= 1) {
unsigned i;
for (i = 0; i < CMD_ARGC; ++i) {
if (NULL != match) {
char *prev = match;
match = alloc_printf("%s %s", match,
CMD_ARGV[i]);
free(prev);
if (NULL == match) {
LOG_ERROR("unable to build "
"search string");
return -ENOMEM;
}
} else {
match = alloc_printf("%s", CMD_ARGV[i]);
if (NULL == match) {
LOG_ERROR("unable to build "
"search string");
return -ENOMEM;
}
}
}
} else
return ERROR_COMMAND_SYNTAX_ERROR;
retval = CALL_COMMAND_HANDLER(command_help_show_list,
c, 0, full, match);
if (CMD_ARGC >= 1)
free(match);
return retval;
}
static int command_unknown_find(unsigned argc, Jim_Obj *const *argv,
struct command *head, struct command **out, bool top_level)
{
if (0 == argc)
return argc;
const char *cmd_name = Jim_GetString(argv[0], NULL);
struct command *c = command_find(head, cmd_name);
if (NULL == c && top_level && strncmp(cmd_name, "ocd_", 4) == 0)
c = command_find(head, cmd_name + 4);
if (NULL == c)
return argc;
*out = c;
return command_unknown_find(--argc, ++argv, (*out)->children, out, false);
}
static int command_unknown(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
{
const char *cmd_name = Jim_GetString(argv[0], NULL);
if (strcmp(cmd_name, "unknown") == 0)
{
if (argc == 1)
return JIM_OK;
argc--;
argv++;
}
script_debug(interp, cmd_name, argc, argv);
struct command_context *cmd_ctx = current_command_context(interp);
struct command *c = cmd_ctx->commands;
int remaining = command_unknown_find(argc, argv, c, &c, true);
// if nothing could be consumed, then it's really an unknown command
if (remaining == argc)
{
const char *cmd = Jim_GetString(argv[0], NULL);
LOG_ERROR("Unknown command:\n %s", cmd);
return JIM_OK;
}
bool found = true;
Jim_Obj *const *start;
unsigned count;
if (c->handler || c->jim_handler)
{
// include the command name in the list
count = remaining + 1;
start = argv + (argc - remaining - 1);
}
else
{
c = command_find(cmd_ctx->commands, "usage");
if (NULL == c)
{
LOG_ERROR("unknown command, but usage is missing too");
return JIM_ERR;
}
count = argc - remaining;
start = argv;
found = false;
}
// pass the command through to the intended handler
if (c->jim_handler)
{
interp->cmdPrivData = c->jim_handler_data;
return (*c->jim_handler)(interp, count, start);
}
return script_command_run(interp, count, start, c, found);
}
static int jim_command_mode(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
{
struct command_context *cmd_ctx = current_command_context(interp);
enum command_mode mode;
if (argc > 1)
{
struct command *c = cmd_ctx->commands;
int remaining = command_unknown_find(argc - 1, argv + 1, c, &c, true);
// if nothing could be consumed, then it's an unknown command
if (remaining == argc - 1)
{
Jim_SetResultString(interp, "unknown", -1);
return JIM_OK;
}
mode = c->mode;
}
else
mode = cmd_ctx->mode;
const char *mode_str;
switch (mode) {
case COMMAND_ANY: mode_str = "any"; break;
case COMMAND_CONFIG: mode_str = "config"; break;
case COMMAND_EXEC: mode_str = "exec"; break;
default: mode_str = "unknown"; break;
}
Jim_SetResultString(interp, mode_str, -1);
return JIM_OK;
}
static int jim_command_type(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
{
if (1 == argc)
return JIM_ERR;
struct command_context *cmd_ctx = current_command_context(interp);
struct command *c = cmd_ctx->commands;
int remaining = command_unknown_find(argc - 1, argv + 1, c, &c, true);
// if nothing could be consumed, then it's an unknown command
if (remaining == argc - 1)
{
Jim_SetResultString(interp, "unknown", -1);
return JIM_OK;
}
if (c->jim_handler)
Jim_SetResultString(interp, "native", -1);
else if (c->handler)
Jim_SetResultString(interp, "simple", -1);
else
Jim_SetResultString(interp, "group", -1);
return JIM_OK;
}
int help_add_command(struct command_context *cmd_ctx, struct command *parent,
const char *cmd_name, const char *help_text, const char *usage)
{
struct command **head = command_list_for_parent(cmd_ctx, parent);
struct command *nc = command_find(*head, cmd_name);
if (NULL == nc)
{
// add a new command with help text
struct command_registration cr = {
.name = cmd_name,
.mode = COMMAND_ANY,
.help = help_text,
.usage = usage,
};
nc = register_command(cmd_ctx, parent, &cr);
if (NULL == nc)
{
LOG_ERROR("failed to add '%s' help text", cmd_name);
return ERROR_FAIL;
}
LOG_DEBUG("added '%s' help text", cmd_name);
return ERROR_OK;
}
if (help_text)
{
bool replaced = false;
if (nc->help)
{
free((void *)nc->help);
replaced = true;
}
nc->help = strdup(help_text);
if (replaced)
LOG_INFO("replaced existing '%s' help", cmd_name);
else
LOG_DEBUG("added '%s' help text", cmd_name);
}
if (usage)
{
bool replaced = false;
if (nc->usage)
{
free((void *)nc->usage);
replaced = true;
}
nc->usage = strdup(usage);
if (replaced)
LOG_INFO("replaced existing '%s' usage", cmd_name);
else
LOG_DEBUG("added '%s' usage text", cmd_name);
}
return ERROR_OK;
}
COMMAND_HANDLER(handle_help_add_command)
{
if (CMD_ARGC < 2)
{
LOG_ERROR("%s: insufficient arguments", CMD_NAME);
return ERROR_INVALID_ARGUMENTS;
}
// save help text and remove it from argument list
const char *str = CMD_ARGV[--CMD_ARGC];
const char *help = !strcmp(CMD_NAME, "add_help_text") ? str : NULL;
const char *usage = !strcmp(CMD_NAME, "add_usage_text") ? str : NULL;
if (!help && !usage)
{
LOG_ERROR("command name '%s' is unknown", CMD_NAME);
return ERROR_INVALID_ARGUMENTS;
}
// likewise for the leaf command name
const char *cmd_name = CMD_ARGV[--CMD_ARGC];
struct command *c = NULL;
if (CMD_ARGC > 0)
{
c = CMD_CTX->commands;
int retval = CALL_COMMAND_HANDLER(command_help_find, c, &c);
if (ERROR_OK != retval)
return retval;
}
return help_add_command(CMD_CTX, c, cmd_name, help, usage);
}
/* sleep command sleeps for <n> milliseconds
* this is useful in target startup scripts
*/
COMMAND_HANDLER(handle_sleep_command)
{
bool busy = false;
if (CMD_ARGC == 2)
{
if (strcmp(CMD_ARGV[1], "busy") == 0)
busy = true;
else
return ERROR_COMMAND_SYNTAX_ERROR;
}
else if (CMD_ARGC < 1 || CMD_ARGC > 2)
return ERROR_COMMAND_SYNTAX_ERROR;
unsigned long duration = 0;
int retval = parse_ulong(CMD_ARGV[0], &duration);
if (ERROR_OK != retval)
return retval;
if (!busy)
{
long long then = timeval_ms();
while (timeval_ms() - then < (long long)duration)
{
target_call_timer_callbacks_now();
usleep(1000);
}
}
else
busy_sleep(duration);
return ERROR_OK;
}
static const struct command_registration command_subcommand_handlers[] = {
{
.name = "mode",
.mode = COMMAND_ANY,
.jim_handler = jim_command_mode,
.usage = "[command_name ...]",
.help = "Returns the command modes allowed by a command:"
"'any', 'config', or 'exec'. If no command is"
"specified, returns the current command mode. "
"Returns 'unknown' if an unknown command is given. "
"Command can be multiple tokens.",
},
{
.name = "type",
.mode = COMMAND_ANY,
.jim_handler = jim_command_type,
.usage = "command_name [...]",
.help = "Returns the type of built-in command:"
"'native', 'simple', 'group', or 'unknown'. "
"Command can be multiple tokens.",
},
COMMAND_REGISTRATION_DONE
};
static const struct command_registration command_builtin_handlers[] = {
{
.name = "add_help_text",
.handler = handle_help_add_command,
.mode = COMMAND_ANY,
.help = "Add new command help text; "
"Command can be multiple tokens.",
.usage = "command_name helptext_string",
},
{
.name = "add_usage_text",
.handler = handle_help_add_command,
.mode = COMMAND_ANY,
.help = "Add new command usage text; "
"command can be multiple tokens.",
.usage = "command_name usage_string",
},
{
.name = "sleep",
.handler = handle_sleep_command,
.mode = COMMAND_ANY,
.help = "Sleep for specified number of milliseconds. "
"\"busy\" will busy wait instead (avoid this).",
.usage = "milliseconds ['busy']",
},
{
.name = "help",
.handler = handle_help_command,
.mode = COMMAND_ANY,
.help = "Show full command help; "
"command can be multiple tokens.",
.usage = "[command_name]",
},
{
.name = "usage",
.handler = handle_help_command,
.mode = COMMAND_ANY,
.help = "Show basic command usage; "
"command can be multiple tokens.",
.usage = "[command_name]",
},
{
.name = "command",
.mode= COMMAND_ANY,
.help = "core command group (introspection)",
.chain = command_subcommand_handlers,
},
COMMAND_REGISTRATION_DONE
};
struct command_context* command_init(const char *startup_tcl, Jim_Interp *interp)
{
struct command_context* context = malloc(sizeof(struct command_context));
const char *HostOs;
context->mode = COMMAND_EXEC;
context->commands = NULL;
context->current_target = 0;
context->output_handler = NULL;
context->output_handler_priv = NULL;
#if !BUILD_ECOSBOARD
/* Create a jim interpreter if we were not handed one */
if (interp == NULL)
{
/* Create an interpreter */
interp = Jim_CreateInterp();
/* Add all the Jim core commands */
Jim_RegisterCoreCommands(interp);
Jim_InitStaticExtensions(interp);
}
#endif
context->interp = interp;
/* Stick to lowercase for HostOS strings. */
#if defined(_MSC_VER)
/* WinXX - is generic, the forward
* looking problem is this:
*
* "win32" or "win64"
*
* "winxx" is generic.
*/
HostOs = "winxx";
#elif defined(__linux__)
HostOs = "linux";
#elif defined(__APPLE__) || defined(__DARWIN__)
HostOs = "darwin";
#elif defined(__CYGWIN__)
HostOs = "cygwin";
#elif defined(__MINGW32__)
HostOs = "mingw32";
#elif defined(__ECOS)
HostOs = "ecos";
#elif defined(__FreeBSD__)
HostOs = "freebsd";
#else
#warning "Unrecognized host OS..."
HostOs = "other";
#endif
Jim_SetGlobalVariableStr(interp, "ocd_HOSTOS",
Jim_NewStringObj(interp, HostOs , strlen(HostOs)));
Jim_CreateCommand(interp, "ocd_find", jim_find, NULL, NULL);
Jim_CreateCommand(interp, "echo", jim_echo, NULL, NULL);
Jim_CreateCommand(interp, "capture", jim_capture, NULL, NULL);
register_commands(context, NULL, command_builtin_handlers);
Jim_SetAssocData(interp, "context", NULL, context);
if (Jim_Eval_Named(interp, startup_tcl, "embedded:startup.tcl",1) == JIM_ERR)
{
LOG_ERROR("Failed to run startup.tcl (embedded into OpenOCD)");
Jim_MakeErrorMessage(interp);
LOG_USER_N("%s", Jim_GetString(Jim_GetResult(interp), NULL));
exit(-1);
}
Jim_DeleteAssocData(interp, "context");
return context;
}
int command_context_mode(struct command_context *cmd_ctx, enum command_mode mode)
{
if (!cmd_ctx)
return ERROR_INVALID_ARGUMENTS;
cmd_ctx->mode = mode;
return ERROR_OK;
}
void process_jim_events(struct command_context *cmd_ctx)
{
#if !BUILD_ECOSBOARD
static int recursion = 0;
if (recursion)
return;
recursion++;
Jim_ProcessEvents(cmd_ctx->interp, JIM_ALL_EVENTS | JIM_DONT_WAIT);
recursion--;
#endif
}
#define DEFINE_PARSE_NUM_TYPE(name, type, func, min, max) \
int parse##name(const char *str, type *ul) \
{ \
if (!*str) \
{ \
LOG_ERROR("Invalid command argument"); \
return ERROR_COMMAND_ARGUMENT_INVALID; \
} \
char *end; \
*ul = func(str, &end, 0); \
if (*end) \
{ \
LOG_ERROR("Invalid command argument"); \
return ERROR_COMMAND_ARGUMENT_INVALID; \
} \
if ((max == *ul) && (ERANGE == errno)) \
{ \
LOG_ERROR("Argument overflow"); \
return ERROR_COMMAND_ARGUMENT_OVERFLOW; \
} \
if (min && (min == *ul) && (ERANGE == errno)) \
{ \
LOG_ERROR("Argument underflow"); \
return ERROR_COMMAND_ARGUMENT_UNDERFLOW; \
} \
return ERROR_OK; \
}
DEFINE_PARSE_NUM_TYPE(_ulong, unsigned long , strtoul, 0, ULONG_MAX)
DEFINE_PARSE_NUM_TYPE(_ullong, unsigned long long, strtoull, 0, ULLONG_MAX)
DEFINE_PARSE_NUM_TYPE(_long, long , strtol, LONG_MIN, LONG_MAX)
DEFINE_PARSE_NUM_TYPE(_llong, long long, strtoll, LLONG_MIN, LLONG_MAX)
#define DEFINE_PARSE_WRAPPER(name, type, min, max, functype, funcname) \
int parse##name(const char *str, type *ul) \
{ \
functype n; \
int retval = parse##funcname(str, &n); \
if (ERROR_OK != retval) \
return retval; \
if (n > max) \
return ERROR_COMMAND_ARGUMENT_OVERFLOW; \
if (min) \
return ERROR_COMMAND_ARGUMENT_UNDERFLOW; \
*ul = n; \
return ERROR_OK; \
}
#define DEFINE_PARSE_ULONG(name, type, min, max) \
DEFINE_PARSE_WRAPPER(name, type, min, max, unsigned long, _ulong)
DEFINE_PARSE_ULONG(_uint, unsigned, 0, UINT_MAX)
DEFINE_PARSE_ULONG(_u32, uint32_t, 0, UINT32_MAX)
DEFINE_PARSE_ULONG(_u16, uint16_t, 0, UINT16_MAX)
DEFINE_PARSE_ULONG(_u8, uint8_t, 0, UINT8_MAX)
#define DEFINE_PARSE_LONG(name, type, min, max) \
DEFINE_PARSE_WRAPPER(name, type, min, max, long, _long)
DEFINE_PARSE_LONG(_int, int, n < INT_MIN, INT_MAX)
DEFINE_PARSE_LONG(_s32, int32_t, n < INT32_MIN, INT32_MAX)
DEFINE_PARSE_LONG(_s16, int16_t, n < INT16_MIN, INT16_MAX)
DEFINE_PARSE_LONG(_s8, int8_t, n < INT8_MIN, INT8_MAX)
static int command_parse_bool(const char *in, bool *out,
const char *on, const char *off)
{
if (strcasecmp(in, on) == 0)
*out = true;
else if (strcasecmp(in, off) == 0)
*out = false;
else
return ERROR_COMMAND_SYNTAX_ERROR;
return ERROR_OK;
}
int command_parse_bool_arg(const char *in, bool *out)
{
if (command_parse_bool(in, out, "on", "off") == ERROR_OK)
return ERROR_OK;
if (command_parse_bool(in, out, "enable", "disable") == ERROR_OK)
return ERROR_OK;
if (command_parse_bool(in, out, "true", "false") == ERROR_OK)
return ERROR_OK;
if (command_parse_bool(in, out, "yes", "no") == ERROR_OK)
return ERROR_OK;
if (command_parse_bool(in, out, "1", "0") == ERROR_OK)
return ERROR_OK;
return ERROR_INVALID_ARGUMENTS;
}
COMMAND_HELPER(handle_command_parse_bool, bool *out, const char *label)
{
switch (CMD_ARGC) {
case 1: {
const char *in = CMD_ARGV[0];
if (command_parse_bool_arg(in, out) != ERROR_OK)
{
LOG_ERROR("%s: argument '%s' is not valid", CMD_NAME, in);
return ERROR_INVALID_ARGUMENTS;
}
// fall through
}
case 0:
LOG_INFO("%s is %s", label, *out ? "enabled" : "disabled");
break;
default:
return ERROR_INVALID_ARGUMENTS;
}
return ERROR_OK;
}
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