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command context: fix errors when running certain commands on startup 

Various commands, e.g. "arm mcr xxxx" would fail if invoked upon startup
since it there was no command context defined for the jim interpreter
in that case.

A Jim interpreter is now associated with a command context(telnet,
gdb server's) or the default global command context.

Signed-off-by: Øyvind Harboe <oyvind.harboe@zylin.com>
__archive__
Øyvind Harboe 2010-05-03 17:01:53 +02:00
parent 7e33f87b3d
commit 91b9f3de0b
5 changed files with 30 additions and 23 deletions
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8
src/helper/command.c
View File

@ -167,14 +167,18 @@ static const char **script_command_args_alloc(
return words;
}
static struct command_context *current_command_context(Jim_Interp *interp)
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.
* 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;
}

4
src/helper/command.h
View File

@ -311,6 +311,10 @@ void command_set_output_handler(struct command_context* context,
int command_context_mode(struct command_context *context, enum command_mode mode);
/* Return the current command context associated with the Jim interpreter or
* alternatively the global default command interpreter
*/
struct command_context *current_command_context(Jim_Interp *interp);
/**
* Creates a new command context using the startup TCL provided and
* the existing Jim interpreter, if any. If interp == NULL, then command_init

4
src/jtag/tcl.c
View File

@ -684,7 +684,7 @@ static int jim_jtag_arp_init(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
Jim_WrongNumArgs(goi.interp, 1, goi.argv-1, "(no params)");
return JIM_ERR;
}
struct command_context *context = Jim_GetAssocData(interp, "context");
struct command_context *context = current_command_context(interp);
int e = jtag_init_inner(context);
if (e != ERROR_OK) {
Jim_SetResult_sprintf(goi.interp, "error: %d", e);
@ -701,7 +701,7 @@ static int jim_jtag_arp_init_reset(Jim_Interp *interp, int argc, Jim_Obj *const
Jim_WrongNumArgs(goi.interp, 1, goi.argv-1, "(no params)");
return JIM_ERR;
}
struct command_context *context = Jim_GetAssocData(interp, "context");
struct command_context *context = current_command_context(interp);
int e = jtag_init_reset(context);
if (e != ERROR_OK) {
Jim_SetResult_sprintf(goi.interp, "error: %d", e);

8
src/target/armv4_5.c
View File

@ -820,11 +820,9 @@ static int jim_mcrmrc(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
struct arm *arm;
int retval;
context = Jim_GetAssocData(interp, "context");
if (context == NULL) {
LOG_ERROR("%s: no command context", __func__);
return JIM_ERR;
}
context = current_command_context(interp);
assert( context != NULL);
target = get_current_target(context);
if (target == NULL) {
LOG_ERROR("%s: no current target", __func__);

29
src/target/target.c
View File

@ -3236,12 +3236,9 @@ static int jim_mem2array(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
struct command_context *context;
struct target *target;
context = Jim_GetAssocData(interp, "context");
if (context == NULL)
{
LOG_ERROR("mem2array: no command context");
return JIM_ERR;
}
context = current_command_context(interp);
assert (context != NULL);
target = get_current_target(context);
if (target == NULL)
{
@ -3432,11 +3429,9 @@ static int jim_array2mem(Jim_Interp *interp, int argc, Jim_Obj *const *argv)
struct command_context *context;
struct target *target;
context = Jim_GetAssocData(interp, "context");
if (context == NULL) {
LOG_ERROR("array2mem: no command context");
return JIM_ERR;
}
context = current_command_context(interp);
assert (context != NULL);
target = get_current_target(context);
if (target == NULL) {
LOG_ERROR("array2mem: no current target");
@ -4318,7 +4313,9 @@ static int jim_target_wait_state(Jim_Interp *interp, int argc, Jim_Obj *const *a
*/
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 command_context *cmd_ctx = current_command_context(interp);
assert (cmd_ctx != NULL);
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",
@ -4512,7 +4509,9 @@ static int target_create(Jim_GetOptInfo *goi)
struct target *target;
struct command_context *cmd_ctx;
cmd_ctx = Jim_GetAssocData(goi->interp, "context");
cmd_ctx = current_command_context(goi->interp);
assert (cmd_ctx != NULL);
if (goi->argc < 3) {
Jim_WrongNumArgs(goi->interp, 1, goi->argv, "?name? ?type? ..options...");
return JIM_ERR;
@ -4686,7 +4685,9 @@ static int jim_target_current(Jim_Interp *interp, int argc, Jim_Obj *const *argv
Jim_WrongNumArgs(interp, 1, argv, "Too many parameters");
return JIM_ERR;
}
struct command_context *cmd_ctx = Jim_GetAssocData(interp, "context");
struct command_context *cmd_ctx = current_command_context(interp);
assert (cmd_ctx != NULL);
Jim_SetResultString(interp, get_current_target(cmd_ctx)->cmd_name, -1);
return JIM_OK;
}