helper: add stacktrace command that returns error stacktrace

Ability to access the stacktrace from a script is quite
handy.

Signed-off-by: Øyvind Harboe <oyvind.harboe@zylin.com>

1 files changed, 31 insertions, 0 deletions

diff --git a/src/openocd.c b/src/openocd.c
index 5f890dbe..7347cad8 100644
--- a/src/openocd.c
+++ b/src/openocd.c
@@ -185,6 +185,29 @@ COMMAND_HANDLER(handle_add_script_search_dir_command)
 	return ERROR_OK;
 }
 
+
+static int jim_stacktrace_command(Jim_Interp *interp, int argc,
+		Jim_Obj * const *argv)
+{
+	if (argc != 1)
+	{
+		return JIM_ERR;
+	}
+	Jim_Obj * stacktrace = Jim_DuplicateObj(interp, interp->stackTrace);
+	
+	/* insert actual error site at beginning of list*/
+	Jim_Obj *procname = Jim_NewStringObj(interp, "", -1); /* Uhhh... don't know this one. */
+	Jim_ListInsertElements(interp, stacktrace, 0, 1, &procname);
+	Jim_Obj *filename = Jim_NewStringObj(interp, interp->errorFileName, -1);
+	Jim_ListInsertElements(interp, stacktrace, 1, 1, &filename);
+	Jim_Obj *line = Jim_NewIntObj(interp, interp->errorLine);
+	Jim_ListInsertElements(interp, stacktrace, 2, 1, &line);
+
+	Jim_SetResult(interp, stacktrace);
+
+	return JIM_OK;
+}
+
 static const struct command_registration openocd_command_handlers[] = {
 	{
 		.name = "version",
@@ -215,6 +238,14 @@ static const struct command_registration openocd_command_handlers[] = {
 		.help = "dir to search for config files and scripts",
 
 	},
+	{
+		.name = "stacktrace",
+		.jim_handler = jim_stacktrace_command,
+		.mode = COMMAND_ANY,
+		.help = "returns the stacktrace as a list of triples: proc, file, line."
+		"The stack trace is reset when a new stack trace is being built after "
+		"a new failure has occurred.",
+	},
 	COMMAND_REGISTRATION_DONE
 };