/***************************************************************************
- * Copyright (C) 2008 *
+ * Copyright (C) 2010 Øyvind Harboe *
+ * oyvind.harboe@zylin.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 *
* 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. *
+ * along with this program. If not, see <http://www.gnu.org/licenses/>. *
***************************************************************************/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
-#include <stdarg.h>
#include "tcl_server.h"
+#include <target/target.h>
+#include <helper/binarybuffer.h>
+
+#define TCL_SERVER_VERSION "TCL Server 0.1"
+#define TCL_LINE_INITIAL (4*1024)
+#define TCL_LINE_MAX (4*1024*1024)
+
+struct tcl_connection {
+ int tc_linedrop;
+ int tc_lineoffset;
+ int tc_line_size;
+ char *tc_line;
+ int tc_outerror;/* flag an output error */
+ enum target_state tc_laststate;
+ bool tc_notify;
+ bool tc_trace;
+};
+
+static char *tcl_port;
-#include "jim.h"
-#include "log.h"
-#include "command.h"
-
-#include <stdlib.h>
-#include <unistd.h>
-#include <errno.h>
-#include <string.h>
-#include <ctype.h>
+/* handlers */
+static int tcl_new_connection(struct connection *connection);
+static int tcl_input(struct connection *connection);
+static int tcl_output(struct connection *connection, const void *buf, ssize_t len);
+static int tcl_closed(struct connection *connection);
-#define TCL_SERVER_VERSION "TCL Server 0.1"
-#define TCL_MAX_LINE (4096)
+static int tcl_target_callback_event_handler(struct target *target,
+ enum target_event event, void *priv)
+{
+ struct connection *connection = priv;
+ struct tcl_connection *tclc;
+ char buf[256];
+
+ tclc = connection->priv;
+
+ if (tclc->tc_notify) {
+ snprintf(buf, sizeof(buf), "type target_event event %s\r\n\x1a", target_event_name(event));
+ tcl_output(connection, buf, strlen(buf));
+ }
+
+ if (tclc->tc_laststate != target->state) {
+ tclc->tc_laststate = target->state;
+ if (tclc->tc_notify) {
+ snprintf(buf, sizeof(buf), "type target_state state %s\r\n\x1a", target_state_name(target));
+ tcl_output(connection, buf, strlen(buf));
+ }
+ }
+
+ return ERROR_OK;
+}
-typedef struct tcl_connection_s {
- int tc_linedrop;
- int tc_lineoffset;
- char tc_line[TCL_MAX_LINE];
+static int tcl_target_callback_reset_handler(struct target *target,
+ enum target_reset_mode reset_mode, void *priv)
+{
+ struct connection *connection = priv;
+ struct tcl_connection *tclc;
+ char buf[256];
- int tc_outerror; /* flag an output error */
-} tcl_connection_t;
+ tclc = connection->priv;
-extern Jim_Interp *interp;
-static unsigned short tcl_port = 0;
+ if (tclc->tc_notify) {
+ snprintf(buf, sizeof(buf), "type target_reset mode %s\r\n\x1a", target_reset_mode_name(reset_mode));
+ tcl_output(connection, buf, strlen(buf));
+ }
-/* commands */
-static int handle_tcl_port_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
+ return ERROR_OK;
+}
-/* handlers */
-static int tcl_new_connection(connection_t *connection);
-static int tcl_input(connection_t *connection);
-static int tcl_output(connection_t *connection, const void *buf, ssize_t len);
-static int tcl_closed(connection_t *connection);
+static int tcl_target_callback_trace_handler(struct target *target,
+ size_t len, uint8_t *data, void *priv)
+{
+ struct connection *connection = priv;
+ struct tcl_connection *tclc;
+ char *header = "type target_trace data ";
+ char *trailer = "\r\n\x1a";
+ size_t hex_len = len * 2 + 1;
+ size_t max_len = hex_len + strlen(header) + strlen(trailer);
+ char *buf, *hex;
+
+ tclc = connection->priv;
+
+ if (tclc->tc_trace) {
+ hex = malloc(hex_len);
+ buf = malloc(max_len);
+ hexify(hex, data, len, hex_len);
+ snprintf(buf, max_len, "%s%s%s", header, hex, trailer);
+ tcl_output(connection, buf, strlen(buf));
+ free(hex);
+ free(buf);
+ }
+
+ return ERROR_OK;
+}
/* write data out to a socket.
*
* this is a blocking write, so the return value must equal the length, if
* that is not the case then flag the connection with an output error.
*/
-int tcl_output(connection_t *connection, const void *data, ssize_t len)
+int tcl_output(struct connection *connection, const void *data, ssize_t len)
{
- ssize_t wlen;
- tcl_connection_t *tclc;
+ ssize_t wlen;
+ struct tcl_connection *tclc;
- tclc = connection->priv;
- if (tclc->tc_outerror)
- return ERROR_SERVER_REMOTE_CLOSED;
+ tclc = connection->priv;
+ if (tclc->tc_outerror)
+ return ERROR_SERVER_REMOTE_CLOSED;
- wlen = write_socket(connection->fd, data, len);
- if (wlen == len)
- return ERROR_OK;
+ wlen = connection_write(connection, data, len);
- LOG_ERROR("error during write: %d != %d", (int)wlen, (int)len);
- tclc->tc_outerror = 1;
- return ERROR_SERVER_REMOTE_CLOSED;
-}
+ if (wlen == len)
+ return ERROR_OK;
+ LOG_ERROR("error during write: %d != %d", (int)wlen, (int)len);
+ tclc->tc_outerror = 1;
+ return ERROR_SERVER_REMOTE_CLOSED;
+}
/* connections */
-static int tcl_new_connection(connection_t *connection)
+static int tcl_new_connection(struct connection *connection)
{
- tcl_connection_t *tclc;
+ struct tcl_connection *tclc;
+
+ tclc = calloc(1, sizeof(struct tcl_connection));
+ if (tclc == NULL)
+ return ERROR_CONNECTION_REJECTED;
- tclc = malloc(sizeof(tcl_connection_t));
- if (tclc == NULL)
- return ERROR_CONNECTION_REJECTED;
+ tclc->tc_line_size = TCL_LINE_INITIAL;
+ tclc->tc_line = malloc(tclc->tc_line_size);
+ if (tclc->tc_line == NULL) {
+ free(tclc);
+ return ERROR_CONNECTION_REJECTED;
+ }
- memset(tclc, 0, sizeof(tcl_connection_t));
- connection->priv = tclc;
- return ERROR_OK;
+ connection->priv = tclc;
+
+ struct target *target = get_current_target(connection->cmd_ctx);
+ if (target != NULL)
+ tclc->tc_laststate = target->state;
+
+ /* store the connection object on cmd_ctx so we can access it from command handlers */
+ connection->cmd_ctx->output_handler_priv = connection;
+
+ target_register_event_callback(tcl_target_callback_event_handler, connection);
+ target_register_reset_callback(tcl_target_callback_reset_handler, connection);
+ target_register_trace_callback(tcl_target_callback_trace_handler, connection);
+
+ return ERROR_OK;
}
-static int tcl_input(connection_t *connection)
+static int tcl_input(struct connection *connection)
{
- int retval;
- int i;
- ssize_t rlen;
- const char *result;
- int reslen;
- tcl_connection_t *tclc;
- char in[256];
-
- rlen = read_socket(connection->fd, &in, sizeof(in));
- if (rlen <= 0) {
- if (rlen < 0)
- LOG_ERROR("error during read: %s", strerror(errno));
- return ERROR_SERVER_REMOTE_CLOSED;
- }
-
- tclc = connection->priv;
- if (tclc == NULL)
- return ERROR_CONNECTION_REJECTED;
-
- /* push as much data into the line as possible */
- for (i = 0; i < rlen; i++)
- {
- if (!isprint(in[i]) && !isspace(in[i]))
- {
- /* drop this line */
- tclc->tc_linedrop = 1;
- continue;
- }
-
- /* buffer the data */
- tclc->tc_line[tclc->tc_lineoffset] = in[i];
- if (tclc->tc_lineoffset < TCL_MAX_LINE)
- tclc->tc_lineoffset++;
- else
- tclc->tc_linedrop = 1;
-
- if (in[i] != '\n')
- continue;
-
- /* process the line */
- if (tclc->tc_linedrop) {
+ Jim_Interp *interp = (Jim_Interp *)connection->cmd_ctx->interp;
+ int retval;
+ int i;
+ ssize_t rlen;
+ const char *result;
+ int reslen;
+ struct tcl_connection *tclc;
+ unsigned char in[256];
+ char *tc_line_new;
+ int tc_line_size_new;
+
+ rlen = connection_read(connection, &in, sizeof(in));
+ if (rlen <= 0) {
+ if (rlen < 0)
+ LOG_ERROR("error during read: %s", strerror(errno));
+ return ERROR_SERVER_REMOTE_CLOSED;
+ }
+
+ tclc = connection->priv;
+ if (tclc == NULL)
+ return ERROR_CONNECTION_REJECTED;
+
+ /* push as much data into the line as possible */
+ for (i = 0; i < rlen; i++) {
+ /* buffer the data */
+ tclc->tc_line[tclc->tc_lineoffset] = in[i];
+ if (tclc->tc_lineoffset < tclc->tc_line_size) {
+ tclc->tc_lineoffset++;
+ } else if (tclc->tc_line_size >= TCL_LINE_MAX) {
+ /* maximum line size reached, drop line */
+ tclc->tc_linedrop = 1;
+ } else {
+ /* grow line buffer: exponential below 1 MB, linear above */
+ if (tclc->tc_line_size <= 1*1024*1024)
+ tc_line_size_new = tclc->tc_line_size * 2;
+ else
+ tc_line_size_new = tclc->tc_line_size + 1*1024*1024;
+
+ if (tc_line_size_new > TCL_LINE_MAX)
+ tc_line_size_new = TCL_LINE_MAX;
+
+ tc_line_new = realloc(tclc->tc_line, tc_line_size_new);
+ if (tc_line_new == NULL) {
+ tclc->tc_linedrop = 1;
+ } else {
+ tclc->tc_line = tc_line_new;
+ tclc->tc_line_size = tc_line_size_new;
+ tclc->tc_lineoffset++;
+ }
+
+ }
+
+ /* ctrl-z is end of command. When testing from telnet, just
+ * press ctrl-z a couple of times first to put telnet into the
+ * mode where it will send 0x1a in response to pressing ctrl-z
+ */
+ if (in[i] != '\x1a')
+ continue;
+
+ /* process the line */
+ if (tclc->tc_linedrop) {
#define ESTR "line too long\n"
- retval = tcl_output(connection, ESTR, sizeof(ESTR));
- if (retval != ERROR_OK)
- return retval;
+ retval = tcl_output(connection, ESTR, sizeof(ESTR));
+ if (retval != ERROR_OK)
+ return retval;
#undef ESTR
- } else {
- tclc->tc_line[tclc->tc_lineoffset-1] = '\0';
- retval = Jim_Eval(interp, tclc->tc_line);
- result = Jim_GetString(Jim_GetResult(interp), &reslen);
- retval = tcl_output(connection, result, reslen);
- if (retval != ERROR_OK)
- return retval;
- if (memchr(result, '\n', reslen) == NULL)
- tcl_output(connection, "\n", 1);
- }
- tclc->tc_lineoffset = 0;
- tclc->tc_linedrop = 0;
- }
-
- return ERROR_OK;
+ } else {
+ tclc->tc_line[tclc->tc_lineoffset-1] = '\0';
+ command_run_line(connection->cmd_ctx, tclc->tc_line);
+ result = Jim_GetString(Jim_GetResult(interp), &reslen);
+ retval = tcl_output(connection, result, reslen);
+ if (retval != ERROR_OK)
+ return retval;
+ /* Always output ctrl-d as end of line to allow multiline results */
+ tcl_output(connection, "\x1a", 1);
+ }
+
+ tclc->tc_lineoffset = 0;
+ tclc->tc_linedrop = 0;
+ }
+
+ return ERROR_OK;
}
-static int tcl_closed(connection_t *connection)
+static int tcl_closed(struct connection *connection)
{
- /* cleanup connection context */
- if (connection->priv) {
- free(connection->priv);
- connection->priv = NULL;
- }
- return ERROR_OK;
+ struct tcl_connection *tclc;
+ tclc = connection->priv;
+
+ /* cleanup connection context */
+ if (tclc) {
+ free(tclc->tc_line);
+ free(tclc);
+ connection->priv = NULL;
+ }
+
+ target_unregister_event_callback(tcl_target_callback_event_handler, connection);
+ target_unregister_reset_callback(tcl_target_callback_reset_handler, connection);
+ target_unregister_trace_callback(tcl_target_callback_trace_handler, connection);
+
+ return ERROR_OK;
}
int tcl_init(void)
{
- int retval;
-
- if (tcl_port == 0)
- {
- LOG_WARNING("no tcl port specified, using default port 6666");
- tcl_port = 6666;
- }
+ if (strcmp(tcl_port, "disabled") == 0) {
+ LOG_INFO("tcl server disabled");
+ return ERROR_OK;
+ }
+
+ return add_service("tcl", tcl_port, CONNECTION_LIMIT_UNLIMITED,
+ &tcl_new_connection, &tcl_input,
+ &tcl_closed, NULL);
+}
- retval = add_service("tcl", CONNECTION_TCL, tcl_port, 1, tcl_new_connection, tcl_input, tcl_closed, NULL);
- return retval;
+COMMAND_HANDLER(handle_tcl_port_command)
+{
+ return CALL_COMMAND_HANDLER(server_pipe_command, &tcl_port);
}
+COMMAND_HANDLER(handle_tcl_notifications_command)
+{
+ struct connection *connection = NULL;
+ struct tcl_connection *tclc = NULL;
+
+ if (CMD_CTX->output_handler_priv != NULL)
+ connection = CMD_CTX->output_handler_priv;
+
+ if (connection != NULL && !strcmp(connection->service->name, "tcl")) {
+ tclc = connection->priv;
+ return CALL_COMMAND_HANDLER(handle_command_parse_bool, &tclc->tc_notify, "Target Notification output ");
+ } else {
+ LOG_ERROR("%s: can only be called from the tcl server", CMD_NAME);
+ return ERROR_COMMAND_SYNTAX_ERROR;
+ }
+}
-int tcl_register_commands(command_context_t *cmd_ctx)
+COMMAND_HANDLER(handle_tcl_trace_command)
{
- register_command(cmd_ctx, NULL, "tcl_port", handle_tcl_port_command, COMMAND_CONFIG, "");
- return ERROR_OK;
+ struct connection *connection = NULL;
+ struct tcl_connection *tclc = NULL;
+
+ if (CMD_CTX->output_handler_priv != NULL)
+ connection = CMD_CTX->output_handler_priv;
+
+ if (connection != NULL && !strcmp(connection->service->name, "tcl")) {
+ tclc = connection->priv;
+ return CALL_COMMAND_HANDLER(handle_command_parse_bool, &tclc->tc_trace, "Target trace output ");
+ } else {
+ LOG_ERROR("%s: can only be called from the tcl server", CMD_NAME);
+ return ERROR_COMMAND_SYNTAX_ERROR;
+ }
}
-static int handle_tcl_port_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
+static const struct command_registration tcl_command_handlers[] = {
+ {
+ .name = "tcl_port",
+ .handler = handle_tcl_port_command,
+ .mode = COMMAND_ANY,
+ .help = "Specify port on which to listen "
+ "for incoming Tcl syntax. "
+ "Read help on 'gdb_port'.",
+ .usage = "[port_num]",
+ },
+ {
+ .name = "tcl_notifications",
+ .handler = handle_tcl_notifications_command,
+ .mode = COMMAND_EXEC,
+ .help = "Target Notification output",
+ .usage = "[on|off]",
+ },
+ {
+ .name = "tcl_trace",
+ .handler = handle_tcl_trace_command,
+ .mode = COMMAND_EXEC,
+ .help = "Target trace output",
+ .usage = "[on|off]",
+ },
+ COMMAND_REGISTRATION_DONE
+};
+
+int tcl_register_commands(struct command_context *cmd_ctx)
{
- if (argc == 1) {
- tcl_port = strtoul(args[0], NULL, 0);
- }
- return ERROR_OK;
+ tcl_port = strdup("6666");
+ return register_commands(cmd_ctx, NULL, tcl_command_handlers);
}
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