The final part of the reverse step and break handling is to bring
the machine back to a debug stop state. gdb expects a response.
A gdb 'rsi' command hangs forever because the gdbstub filters out
the response (also observable with reverse_debugging.py avocado
tests).
Fix by setting allow_stop_reply for the gdb backward packets.
Fixes: 758370052fb ("gdbstub: only send stop-reply packets when allowed to")
Cc: qemu-sta...@nongnu.org
Cc: Matheus Tavares Bernardino <quic_mathb...@quicinc.com>
Cc: Alex Bennée <alex.ben...@linaro.org>
Cc: Taylor Simpson <tsimp...@quicinc.com>
Signed-off-by: Nicholas Piggin <npig...@gmail.com>
---
gdbstub/gdbstub.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/gdbstub/gdbstub.c b/gdbstub/gdbstub.c
index be18568d0a..9496d7b175 100644
--- a/gdbstub/gdbstub.c
+++ b/gdbstub/gdbstub.c
@@ -1814,6 +1814,7 @@ static int gdb_handle_packet(const char *line_buf)
.handler = handle_backward,
.cmd = "b",
.cmd_startswith = 1,
+ .allow_stop_reply = true,
.schema = "o0"
};
cmd_parser = &backward_cmd_desc;
--
2.40.1
