@@ -33,6 +33,7 @@
#include "sysemu/char.h"
#include "sysemu/sysemu.h"
#include "exec/gdbstub.h"
+#include "reverse-execution.h"
#endif
#define MAX_PACKET_LENGTH 4096
@@ -1113,6 +1114,17 @@ static int gdb_handle_packet(GDBState *s, const char *line_buf)
if (cc->gdb_core_xml_file != NULL) {
pstrcat(buf, sizeof(buf), ";qXfer:features:read+");
}
+
+ #ifndef CONFIG_USER_ONLY
+ /*
+ * When reverse execution is enabled those additional features must
+ * be set so GDB allows reverse-stepi and reverse-continue command.
+ */
+ if (cexe_is_enabled()) {
+ pstrcat(buf, sizeof(buf), ";ReverseStep+;ReverseContinue+");
+ }
+ #endif /* !CONFIG_USER_ONLY */
+
put_packet(s, buf);
break;
}
@@ -1161,7 +1173,23 @@ static int gdb_handle_packet(GDBState *s, const char *line_buf)
}
/* Unrecognised 'q' command. */
goto unknown_command;
-
+ #ifndef CONFIG_USER_ONLY
+ case 'b':
+ /* Reverse execution. */
+ switch (*p) {
+ case 's':
+ cexe_step_backward(s->c_cpu, 1);
+ break;
+ case 'c':
+ cexe_continue_backward(s->c_cpu);
+ break;
+ default:
+ buf[0] = '\0';
+ put_packet(s, buf);
+ break;
+ }
+ break;
+ #endif /* !CONFIG_USER_ONLY */
default:
unknown_command:
/* put empty packet */
@@ -1221,6 +1249,7 @@ static void gdb_vm_state_change(void *opaque, int running, RunState state)
ret = GDB_SIGNAL_TRAP;
break;
case RUN_STATE_PAUSED:
+ cexe_stop_reverse_continue();
ret = GDB_SIGNAL_INT;
break;
case RUN_STATE_SHUTDOWN: