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-rw-r--r--src/server/gdb_server.c95
1 files changed, 57 insertions, 38 deletions
diff --git a/src/server/gdb_server.c b/src/server/gdb_server.c
index 62999538..59ce4647 100644
--- a/src/server/gdb_server.c
+++ b/src/server/gdb_server.c
@@ -588,44 +588,50 @@ int gdb_program_handler(struct target_s *target, enum target_event event, void *
return ERROR_OK;
}
+static void gdb_frontend_halted(struct target_s *target, connection_t *connection)
+{
+ gdb_connection_t *gdb_connection = connection->priv;
+
+ /* In the GDB protocol when we are stepping or coninuing execution,
+ * we have a lingering reply. Upon receiving a halted event
+ * when we have that lingering packet, we reply to the original
+ * step or continue packet.
+ *
+ * Executing monitor commands can bring the target in and
+ * out of the running state so we'll see lots of TARGET_EVENT_XXX
+ * that are to be ignored.
+ */
+ if (gdb_connection->frontend_state == TARGET_RUNNING)
+ {
+ char sig_reply[4];
+ int signal;
+ /* stop forwarding log packets! */
+ log_remove_callback(gdb_log_callback, connection);
+
+ if (gdb_connection->ctrl_c)
+ {
+ signal = 0x2;
+ gdb_connection->ctrl_c = 0;
+ }
+ else
+ {
+ signal = gdb_last_signal(target);
+ }
+
+ snprintf(sig_reply, 4, "T%2.2x", signal);
+ gdb_put_packet(connection, sig_reply, 3);
+ gdb_connection->frontend_state = TARGET_HALTED;
+ }
+}
+
int gdb_target_callback_event_handler(struct target_s *target, enum target_event event, void *priv)
{
connection_t *connection = priv;
- gdb_connection_t *gdb_connection = connection->priv;
- char sig_reply[4];
- int signal;
switch (event)
{
case TARGET_EVENT_HALTED:
- /* In the GDB protocol when we are stepping or coninuing execution,
- * we have a lingering reply. Upon receiving a halted event
- * when we have that lingering packet, we reply to the original
- * step or continue packet.
- *
- * Executing monitor commands can bring the target in and
- * out of the running state so we'll see lots of TARGET_EVENT_XXX
- * that are to be ignored.
- */
- if (gdb_connection->frontend_state == TARGET_RUNNING)
- {
- /* stop forwarding log packets! */
- log_remove_callback(gdb_log_callback, connection);
-
- if (gdb_connection->ctrl_c)
- {
- signal = 0x2;
- gdb_connection->ctrl_c = 0;
- }
- else
- {
- signal = gdb_last_signal(target);
- }
-
- snprintf(sig_reply, 4, "T%2.2x", signal);
- gdb_put_packet(connection, sig_reply, 3);
- gdb_connection->frontend_state = TARGET_HALTED;
- }
+ gdb_frontend_halted(target, connection);
break;
case TARGET_EVENT_GDB_PROGRAM:
gdb_program_handler(target, event, connection->cmd_ctx);
@@ -1208,10 +1214,11 @@ int gdb_write_memory_binary_packet(connection_t *connection, target_t *target, c
return ERROR_OK;
}
-void gdb_step_continue_packet(connection_t *connection, target_t *target, char *packet, int packet_size)
+int gdb_step_continue_packet(connection_t *connection, target_t *target, char *packet, int packet_size)
{
int current = 0;
u32 address = 0x0;
+ int retval=ERROR_OK;
LOG_DEBUG("-");
@@ -1229,13 +1236,14 @@ void gdb_step_continue_packet(connection_t *connection, target_t *target, char *
{
LOG_DEBUG("continue");
target_invoke_script(connection->cmd_ctx, target, "pre_resume");
- target_resume(target, current, address, 0, 0); /* resume at current address, don't handle breakpoints, not debugging */
+ retval=target_resume(target, current, address, 0, 0); /* resume at current address, don't handle breakpoints, not debugging */
}
else if (packet[0] == 's')
{
LOG_DEBUG("step");
- target->type->step(target, current, address, 0); /* step at current or address, don't handle breakpoints */
+ retval=target->type->step(target, current, address, 0); /* step at current or address, don't handle breakpoints */
}
+ return retval;
}
int gdb_breakpoint_watchpoint_packet(connection_t *connection, target_t *target, char *packet, int packet_size)
@@ -1851,6 +1859,14 @@ static void gdb_log_callback(void *priv, const char *file, int line,
/* Do not allocate this on the stack */
char gdb_packet_buffer[GDB_BUFFER_SIZE];
+static void gdb_sig_halted(connection_t *connection)
+{
+ char sig_reply[4];
+ snprintf(sig_reply, 4, "T%2.2x", 2);
+ gdb_put_packet(connection, sig_reply, 3);
+
+}
+
int gdb_input_inner(connection_t *connection)
{
gdb_service_t *gdb_service = connection->service->priv;
@@ -1921,9 +1937,7 @@ int gdb_input_inner(connection_t *connection)
/* If the target isn't in the halted state, then we can't
* step/continue. This might be early setup, etc.
*/
- char sig_reply[4];
- snprintf(sig_reply, 4, "T%2.2x", 2);
- gdb_put_packet(connection, sig_reply, 3);
+ gdb_sig_halted(connection);
} else
{
/* We're running/stepping, in which case we can
@@ -1932,7 +1946,12 @@ int gdb_input_inner(connection_t *connection)
gdb_connection_t *gdb_con = connection->priv;
gdb_con->frontend_state = TARGET_RUNNING;
log_add_callback(gdb_log_callback, connection);
- gdb_step_continue_packet(connection, target, packet, packet_size);
+ int retval=gdb_step_continue_packet(connection, target, packet, packet_size);
+ if (retval!=ERROR_OK)
+ {
+ /* we'll never receive a halted condition... issue a false one.. */
+ gdb_frontend_halted(target, connection);
+ }
}
}
break;