1 /***************************************************************************
2 * Copyright (C) 2005 by Dominic Rath *
3 * Dominic.Rath@gmx.de *
5 * Copyright (C) 2007,2008 Øyvind Harboe *
6 * oyvind.harboe@zylin.com *
8 * Copyright (C) 2008, Duane Ellis *
9 * openocd@duaneeellis.com *
11 * part of this file is taken from libcli (libcli.sourceforge.net) *
12 * Copyright (C) David Parrish (david@dparrish.com) *
14 * This program is free software; you can redistribute it and/or modify *
15 * it under the terms of the GNU General Public License as published by *
16 * the Free Software Foundation; either version 2 of the License, or *
17 * (at your option) any later version. *
19 * This program is distributed in the hope that it will be useful, *
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
22 * GNU General Public License for more details. *
24 * You should have received a copy of the GNU General Public License *
25 * along with this program; if not, write to the *
26 * Free Software Foundation, Inc., *
27 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
28 ***************************************************************************/
34 /* see Embedder-HOWTO.txt in Jim Tcl project hosted on BerliOS*/
38 // @todo the inclusion of target.h here is a layering violation
41 #include "configuration.h"
43 #include "time_support.h"
44 #include "jim-eventloop.h"
47 int fast_and_dangerous
= 0;
48 Jim_Interp
*interp
= NULL
;
50 static int run_command(struct command_context
*context
,
51 struct command
*c
, const char *words
[], unsigned num_words
);
53 static void tcl_output(void *privData
, const char *file
, unsigned line
,
54 const char *function
, const char *string
)
56 Jim_Obj
*tclOutput
= (Jim_Obj
*)privData
;
57 Jim_AppendString(interp
, tclOutput
, string
, strlen(string
));
60 extern struct command_context
*global_cmd_ctx
;
62 void script_debug(Jim_Interp
*interp
, const char *name
,
63 unsigned argc
, Jim_Obj
*const *argv
)
65 LOG_DEBUG("command - %s", name
);
66 for (unsigned i
= 0; i
< argc
; i
++)
69 const char *w
= Jim_GetString(argv
[i
], &len
);
71 /* end of line comment? */
75 LOG_DEBUG("%s - argv[%d]=%s", name
, i
, w
);
79 static int script_command(Jim_Interp
*interp
, int argc
, Jim_Obj
*const *argv
)
81 /* the private data is stashed in the interp structure */
83 struct command_context
*context
;
89 /* DANGER!!!! be careful what we invoke here, since interp->cmdPrivData might
90 * get overwritten by running other Jim commands! Treat it as an
91 * emphemeral global variable that is used in lieu of an argument
92 * to the fn and fish it out manually.
94 c
= interp
->cmdPrivData
;
97 LOG_ERROR("BUG: interp->cmdPrivData == NULL");
100 target_call_timer_callbacks_now();
101 LOG_USER_N("%s", ""); /* Keep GDB connection alive*/
103 script_debug(interp
, c
->name
, argc
, argv
);
105 words
= malloc(argc
* sizeof(char *));
106 for (i
= 0; i
< argc
; i
++)
109 const char *w
= Jim_GetString(argv
[i
], &len
);
112 /* hit an end of line comment */
115 words
[i
] = strdup(w
);
116 if (words
[i
] == NULL
)
119 for (j
= 0; j
< i
; j
++)
127 /* grab the command context from the associated data */
128 context
= Jim_GetAssocData(interp
, "context");
131 /* Tcl can invoke commands directly instead of via command_run_line(). This would
132 * happen when the Jim Tcl interpreter is provided by eCos.
134 context
= global_cmd_ctx
;
137 /* capture log output and return it */
138 Jim_Obj
*tclOutput
= Jim_NewStringObj(interp
, "", 0);
139 /* a garbage collect can happen, so we need a reference count to this object */
140 Jim_IncrRefCount(tclOutput
);
142 log_add_callback(tcl_output
, tclOutput
);
144 // turn words[0] into CMD_ARGV[-1] with this cast
145 retval
= run_command(context
, c
, (const char **)words
, nwords
);
147 log_remove_callback(tcl_output
, tclOutput
);
149 /* We dump output into this local variable */
150 Jim_SetResult(interp
, tclOutput
);
151 Jim_DecrRefCount(interp
, tclOutput
);
153 for (i
= 0; i
< nwords
; i
++)
157 int *return_retval
= Jim_GetAssocData(interp
, "retval");
158 if (return_retval
!= NULL
)
160 *return_retval
= retval
;
163 return (retval
== ERROR_OK
)?JIM_OK
:JIM_ERR
;
166 static Jim_Obj
*command_name_list(struct command
*c
)
168 Jim_Obj
*cmd_list
= c
->parent
?
169 command_name_list(c
->parent
) :
170 Jim_NewListObj(interp
, NULL
, 0);
171 Jim_ListAppendElement(interp
, cmd_list
,
172 Jim_NewStringObj(interp
, c
->name
, -1));
177 static void command_helptext_add(Jim_Obj
*cmd_list
, const char *help
)
179 Jim_Obj
*cmd_entry
= Jim_NewListObj(interp
, NULL
, 0);
180 Jim_ListAppendElement(interp
, cmd_entry
, cmd_list
);
181 Jim_ListAppendElement(interp
, cmd_entry
,
182 Jim_NewStringObj(interp
, help
? : "", -1));
184 /* accumulate help text in Tcl helptext list. */
185 Jim_Obj
*helptext
= Jim_GetGlobalVariableStr(interp
,
186 "ocd_helptext", JIM_ERRMSG
);
187 if (Jim_IsShared(helptext
))
188 helptext
= Jim_DuplicateObj(interp
, helptext
);
189 Jim_ListAppendElement(interp
, helptext
, cmd_entry
);
192 /* nice short description of source file */
193 #define __THIS__FILE__ "command.c"
196 * Find a command by name from a list of commands.
197 * @returns The named command if found, or NULL.
199 static struct command
*command_find(struct command
**head
, const char *name
)
202 for (struct command
*cc
= *head
; cc
; cc
= cc
->next
)
204 if (strcmp(cc
->name
, name
) == 0)
211 * Add the command to the end of linked list.
212 * @returns Returns false if the named command already exists in the list.
213 * Returns true otherwise.
215 static void command_add_child(struct command
**head
, struct command
*c
)
223 struct command
*cc
= *head
;
224 while (cc
->next
) cc
= cc
->next
;
228 struct command
* register_command(struct command_context
*context
,
229 struct command
*parent
, char *name
, command_handler_t handler
,
230 enum command_mode mode
, char *help
)
232 if (!context
|| !name
)
235 struct command
**head
= parent
? &parent
->children
: &context
->commands
;
236 struct command
*c
= command_find(head
, name
);
240 c
= malloc(sizeof(struct command
));
242 c
->name
= strdup(name
);
245 c
->handler
= handler
;
249 command_add_child(head
, c
);
251 command_helptext_add(command_name_list(c
), help
);
253 /* just a placeholder, no handler */
254 if (c
->handler
== NULL
)
257 const char *full_name
= command_name(c
, '_');
259 const char *ocd_name
= alloc_printf("ocd_%s", full_name
);
260 Jim_CreateCommand(interp
, ocd_name
, script_command
, c
, NULL
);
261 free((void *)ocd_name
);
263 /* we now need to add an overrideable proc */
264 const char *override_name
= alloc_printf("proc %s {args} {"
265 "if {[catch {eval ocd_%s $args}] == 0} "
266 "{return \"\"} else {return -code error}}",
267 full_name
, full_name
);
268 Jim_Eval_Named(interp
, override_name
, __THIS__FILE__
, __LINE__
);
269 free((void *)override_name
);
271 free((void *)full_name
);
276 int unregister_all_commands(struct command_context
*context
)
278 struct command
*c
, *c2
;
283 while (NULL
!= context
->commands
)
285 c
= context
->commands
;
287 while (NULL
!= c
->children
)
290 c
->children
= c
->children
->next
;
297 context
->commands
= context
->commands
->next
;
308 int unregister_command(struct command_context
*context
, char *name
)
310 struct command
*c
, *p
= NULL
, *c2
;
312 if ((!context
) || (!name
))
313 return ERROR_INVALID_ARGUMENTS
;
316 c
= context
->commands
;
320 if (strcmp(name
, c
->name
) == 0)
329 /* first element in command list */
330 context
->commands
= c
->next
;
333 /* unregister children */
334 while (NULL
!= c
->children
)
337 c
->children
= c
->children
->next
;
352 /* remember the last command for unlinking */
360 void command_output_text(struct command_context
*context
, const char *data
)
362 if (context
&& context
->output_handler
&& data
) {
363 context
->output_handler(context
, data
);
367 void command_print_sameline(struct command_context
*context
, const char *format
, ...)
372 va_start(ap
, format
);
374 string
= alloc_vprintf(format
, ap
);
377 /* we want this collected in the log + we also want to pick it up as a tcl return
380 * The latter bit isn't precisely neat, but will do for now.
382 LOG_USER_N("%s", string
);
383 /* We already printed it above */
384 /* command_output_text(context, string); */
391 void command_print(struct command_context
*context
, const char *format
, ...)
396 va_start(ap
, format
);
398 string
= alloc_vprintf(format
, ap
);
401 strcat(string
, "\n"); /* alloc_vprintf guaranteed the buffer to be at least one char longer */
402 /* we want this collected in the log + we also want to pick it up as a tcl return
405 * The latter bit isn't precisely neat, but will do for now.
407 LOG_USER_N("%s", string
);
408 /* We already printed it above */
409 /* command_output_text(context, string); */
416 static char *__command_name(struct command
*c
, char delim
, unsigned extra
)
419 unsigned len
= strlen(c
->name
);
420 if (NULL
== c
->parent
) {
421 // allocate enough for the name, child names, and '\0'
422 name
= malloc(len
+ extra
+ 1);
423 strcpy(name
, c
->name
);
425 // parent's extra must include both the space and name
426 name
= __command_name(c
->parent
, delim
, 1 + len
+ extra
);
427 char dstr
[2] = { delim
, 0 };
429 strcat(name
, c
->name
);
433 char *command_name(struct command
*c
, char delim
)
435 return __command_name(c
, delim
, 0);
438 static int run_command(struct command_context
*context
,
439 struct command
*c
, const char *words
[], unsigned num_words
)
441 if (!((context
->mode
== COMMAND_CONFIG
) || (c
->mode
== COMMAND_ANY
) || (c
->mode
== context
->mode
)))
443 /* Config commands can not run after the config stage */
444 LOG_ERROR("Command '%s' only runs during configuration stage", c
->name
);
448 struct command_invocation cmd
= {
451 .argc
= num_words
- 1,
454 int retval
= c
->handler(&cmd
);
455 if (retval
== ERROR_COMMAND_SYNTAX_ERROR
)
457 /* Print help for command */
458 char *full_name
= command_name(c
, ' ');
459 if (NULL
!= full_name
) {
460 command_run_linef(context
, "help %s", full_name
);
465 else if (retval
== ERROR_COMMAND_CLOSE_CONNECTION
)
467 /* just fall through for a shutdown request */
469 else if (retval
!= ERROR_OK
)
471 /* we do not print out an error message because the command *should*
472 * have printed out an error
474 LOG_DEBUG("Command failed with error code %d", retval
);
480 int command_run_line(struct command_context
*context
, char *line
)
482 /* all the parent commands have been registered with the interpreter
483 * so, can just evaluate the line as a script and check for
486 /* run the line thru a script engine */
487 int retval
= ERROR_FAIL
;
489 /* Beware! This code needs to be reentrant. It is also possible
490 * for OpenOCD commands to be invoked directly from Tcl. This would
491 * happen when the Jim Tcl interpreter is provided by eCos for
494 Jim_DeleteAssocData(interp
, "context");
495 retcode
= Jim_SetAssocData(interp
, "context", NULL
, context
);
496 if (retcode
== JIM_OK
)
498 /* associated the return value */
499 Jim_DeleteAssocData(interp
, "retval");
500 retcode
= Jim_SetAssocData(interp
, "retval", NULL
, &retval
);
501 if (retcode
== JIM_OK
)
503 retcode
= Jim_Eval_Named(interp
, line
, __THIS__FILE__
, __LINE__
);
505 Jim_DeleteAssocData(interp
, "retval");
507 Jim_DeleteAssocData(interp
, "context");
509 if (retcode
== JIM_ERR
) {
510 if (retval
!= ERROR_COMMAND_CLOSE_CONNECTION
)
512 /* We do not print the connection closed error message */
513 Jim_PrintErrorMessage(interp
);
515 if (retval
== ERROR_OK
)
517 /* It wasn't a low level OpenOCD command that failed */
521 } else if (retcode
== JIM_EXIT
) {
523 /* exit(Jim_GetExitCode(interp)); */
528 result
= Jim_GetString(Jim_GetResult(interp
), &reslen
);
533 for (i
= 0; i
< reslen
; i
+= 256)
539 strncpy(buff
, result
+ i
, chunk
);
541 LOG_USER_N("%s", buff
);
543 LOG_USER_N("%s", "\n");
550 int command_run_linef(struct command_context
*context
, const char *format
, ...)
552 int retval
= ERROR_FAIL
;
555 va_start(ap
, format
);
556 string
= alloc_vprintf(format
, ap
);
559 retval
= command_run_line(context
, string
);
565 void command_set_output_handler(struct command_context
* context
,
566 command_output_handler_t output_handler
, void *priv
)
568 context
->output_handler
= output_handler
;
569 context
->output_handler_priv
= priv
;
572 struct command_context
* copy_command_context(struct command_context
* context
)
574 struct command_context
* copy_context
= malloc(sizeof(struct command_context
));
576 *copy_context
= *context
;
581 int command_done(struct command_context
*context
)
589 /* find full path to file */
590 static int jim_find(Jim_Interp
*interp
, int argc
, Jim_Obj
*const *argv
)
594 const char *file
= Jim_GetString(argv
[1], NULL
);
595 char *full_path
= find_file(file
);
596 if (full_path
== NULL
)
598 Jim_Obj
*result
= Jim_NewStringObj(interp
, full_path
, strlen(full_path
));
601 Jim_SetResult(interp
, result
);
605 static int jim_echo(Jim_Interp
*interp
, int argc
, Jim_Obj
*const *argv
)
609 const char *str
= Jim_GetString(argv
[1], NULL
);
614 static size_t openocd_jim_fwrite(const void *_ptr
, size_t size
, size_t n
, void *cookie
)
620 /* make it a char easier to read code */
624 if (ptr
== NULL
|| interp
== NULL
|| nbytes
== 0) {
628 /* do we have to chunk it? */
629 if (ptr
[nbytes
] == 0)
631 /* no it is a C style string */
632 LOG_USER_N("%s", ptr
);
635 /* GRR we must chunk - not null terminated */
645 memcpy(chunk
, ptr
, x
);
649 LOG_USER_N("%s", chunk
);
657 static size_t openocd_jim_fread(void *ptr
, size_t size
, size_t n
, void *cookie
)
659 /* TCL wants to read... tell him no */
663 static int openocd_jim_vfprintf(void *cookie
, const char *fmt
, va_list ap
)
674 cp
= alloc_vprintf(fmt
, ap
);
677 LOG_USER_N("%s", cp
);
684 static int openocd_jim_fflush(void *cookie
)
686 /* nothing to flush */
690 static char* openocd_jim_fgets(char *s
, int size
, void *cookie
)
697 static int jim_capture(Jim_Interp
*interp
, int argc
, Jim_Obj
*const *argv
)
702 const char *str
= Jim_GetString(argv
[1], NULL
);
704 /* capture log output and return it */
705 Jim_Obj
*tclOutput
= Jim_NewStringObj(interp
, "", 0);
706 /* a garbage collect can happen, so we need a reference count to this object */
707 Jim_IncrRefCount(tclOutput
);
709 log_add_callback(tcl_output
, tclOutput
);
711 retcode
= Jim_Eval_Named(interp
, str
, __THIS__FILE__
, __LINE__
);
713 log_remove_callback(tcl_output
, tclOutput
);
715 /* We dump output into this local variable */
716 Jim_SetResult(interp
, tclOutput
);
717 Jim_DecrRefCount(interp
, tclOutput
);
722 /* sleep command sleeps for <n> miliseconds
723 * this is useful in target startup scripts
725 COMMAND_HANDLER(handle_sleep_command
)
730 if (strcmp(CMD_ARGV
[1], "busy") == 0)
733 return ERROR_COMMAND_SYNTAX_ERROR
;
735 else if (CMD_ARGC
< 1 || CMD_ARGC
> 2)
736 return ERROR_COMMAND_SYNTAX_ERROR
;
738 unsigned long duration
= 0;
739 int retval
= parse_ulong(CMD_ARGV
[0], &duration
);
740 if (ERROR_OK
!= retval
)
745 long long then
= timeval_ms();
746 while (timeval_ms() - then
< (long long)duration
)
748 target_call_timer_callbacks_now();
753 busy_sleep(duration
);
758 COMMAND_HANDLER(handle_fast_command
)
761 return ERROR_COMMAND_SYNTAX_ERROR
;
763 fast_and_dangerous
= strcmp("enable", CMD_ARGV
[0]) == 0;
769 struct command_context
* command_init(const char *startup_tcl
)
771 struct command_context
* context
= malloc(sizeof(struct command_context
));
774 context
->mode
= COMMAND_EXEC
;
775 context
->commands
= NULL
;
776 context
->current_target
= 0;
777 context
->output_handler
= NULL
;
778 context
->output_handler_priv
= NULL
;
782 /* Create an interpreter */
783 interp
= Jim_CreateInterp();
784 /* Add all the Jim core commands */
785 Jim_RegisterCoreCommands(interp
);
788 #if defined(_MSC_VER)
789 /* WinXX - is generic, the forward
790 * looking problem is this:
794 * "winxx" is generic.
797 #elif defined(__linux__)
799 #elif defined(__DARWIN__)
801 #elif defined(__CYGWIN__)
803 #elif defined(__MINGW32__)
805 #elif defined(__ECOS)
808 #warn unrecognized host OS...
811 Jim_SetGlobalVariableStr(interp
, "ocd_HOSTOS",
812 Jim_NewStringObj(interp
, HostOs
, strlen(HostOs
)));
814 Jim_CreateCommand(interp
, "ocd_find", jim_find
, NULL
, NULL
);
815 Jim_CreateCommand(interp
, "echo", jim_echo
, NULL
, NULL
);
816 Jim_CreateCommand(interp
, "capture", jim_capture
, NULL
, NULL
);
818 /* Set Jim's STDIO */
819 interp
->cookie_stdin
= interp
;
820 interp
->cookie_stdout
= interp
;
821 interp
->cookie_stderr
= interp
;
822 interp
->cb_fwrite
= openocd_jim_fwrite
;
823 interp
->cb_fread
= openocd_jim_fread
;
824 interp
->cb_vfprintf
= openocd_jim_vfprintf
;
825 interp
->cb_fflush
= openocd_jim_fflush
;
826 interp
->cb_fgets
= openocd_jim_fgets
;
829 Jim_EventLoopOnLoad(interp
);
831 if (Jim_Eval_Named(interp
, startup_tcl
, "embedded:startup.tcl",1) == JIM_ERR
)
833 LOG_ERROR("Failed to run startup.tcl (embedded into OpenOCD)");
834 Jim_PrintErrorMessage(interp
);
838 register_command(context
, NULL
, "sleep",
839 handle_sleep_command
, COMMAND_ANY
,
840 "<n> [busy] - sleep for n milliseconds. "
841 "\"busy\" means busy wait");
842 register_command(context
, NULL
, "fast",
843 handle_fast_command
, COMMAND_ANY
,
844 "fast <enable/disable> - place at beginning of "
845 "config files. Sets defaults to fast and dangerous.");
850 int command_context_mode(struct command_context
*cmd_ctx
, enum command_mode mode
)
853 return ERROR_INVALID_ARGUMENTS
;
855 cmd_ctx
->mode
= mode
;
859 void process_jim_events(void)
862 static int recursion
= 0;
867 Jim_ProcessEvents (interp
, JIM_ALL_EVENTS
| JIM_DONT_WAIT
);
873 void register_jim(struct command_context
*cmd_ctx
, const char *name
,
874 Jim_CmdProc cmd
, const char *help
)
876 Jim_CreateCommand(interp
, name
, cmd
, NULL
, NULL
);
878 Jim_Obj
*cmd_list
= Jim_NewListObj(interp
, NULL
, 0);
879 Jim_ListAppendElement(interp
, cmd_list
,
880 Jim_NewStringObj(interp
, name
, -1));
882 command_helptext_add(cmd_list
, help
);
885 /* return global variable long value or 0 upon failure */
886 long jim_global_long(const char *variable
)
888 Jim_Obj
*objPtr
= Jim_GetGlobalVariableStr(interp
, variable
, JIM_ERRMSG
);
890 if (Jim_GetLong(interp
, objPtr
, &t
) == JIM_OK
)
897 #define DEFINE_PARSE_NUM_TYPE(name, type, func, min, max) \
898 int parse##name(const char *str, type *ul) \
902 LOG_ERROR("Invalid command argument"); \
903 return ERROR_COMMAND_ARGUMENT_INVALID; \
906 *ul = func(str, &end, 0); \
909 LOG_ERROR("Invalid command argument"); \
910 return ERROR_COMMAND_ARGUMENT_INVALID; \
912 if ((max == *ul) && (ERANGE == errno)) \
914 LOG_ERROR("Argument overflow"); \
915 return ERROR_COMMAND_ARGUMENT_OVERFLOW; \
917 if (min && (min == *ul) && (ERANGE == errno)) \
919 LOG_ERROR("Argument underflow"); \
920 return ERROR_COMMAND_ARGUMENT_UNDERFLOW; \
924 DEFINE_PARSE_NUM_TYPE(_ulong
, unsigned long , strtoul
, 0, ULONG_MAX
)
925 DEFINE_PARSE_NUM_TYPE(_ullong
, unsigned long long, strtoull
, 0, ULLONG_MAX
)
926 DEFINE_PARSE_NUM_TYPE(_long
, long , strtol
, LONG_MIN
, LONG_MAX
)
927 DEFINE_PARSE_NUM_TYPE(_llong
, long long, strtoll
, LLONG_MIN
, LLONG_MAX
)
929 #define DEFINE_PARSE_WRAPPER(name, type, min, max, functype, funcname) \
930 int parse##name(const char *str, type *ul) \
933 int retval = parse##funcname(str, &n); \
934 if (ERROR_OK != retval) \
937 return ERROR_COMMAND_ARGUMENT_OVERFLOW; \
939 return ERROR_COMMAND_ARGUMENT_UNDERFLOW; \
944 #define DEFINE_PARSE_ULONG(name, type, min, max) \
945 DEFINE_PARSE_WRAPPER(name, type, min, max, unsigned long, _ulong)
946 DEFINE_PARSE_ULONG(_uint
, unsigned, 0, UINT_MAX
)
947 DEFINE_PARSE_ULONG(_u32
, uint32_t, 0, UINT32_MAX
)
948 DEFINE_PARSE_ULONG(_u16
, uint16_t, 0, UINT16_MAX
)
949 DEFINE_PARSE_ULONG(_u8
, uint8_t, 0, UINT8_MAX
)
951 #define DEFINE_PARSE_LONG(name, type, min, max) \
952 DEFINE_PARSE_WRAPPER(name, type, min, max, long, _long)
953 DEFINE_PARSE_LONG(_int
, int, n
< INT_MIN
, INT_MAX
)
954 DEFINE_PARSE_LONG(_s32
, int32_t, n
< INT32_MIN
, INT32_MAX
)
955 DEFINE_PARSE_LONG(_s16
, int16_t, n
< INT16_MIN
, INT16_MAX
)
956 DEFINE_PARSE_LONG(_s8
, int8_t, n
< INT8_MIN
, INT8_MAX
)
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