QEMU should convert signal number reciving from GDB cilent
from gdb-signal number to target sginal number - using gdb_signal_to_target().
In this case, GDB_SIG_BUS is 10. However, 10 is SIGUSR1 for target.
So QEMU continues with the wrong signal number.
#include <stdio.h>
#include <signal.h>
void handle_signal (int sig)
{
puts ("Hello");
}
int main ()
{
signal (SIGBUS, handle_signal);
kill (0, SIGBUS);
return 0;
}
(gdb) target remote :25566
Remote debugging using :25566
0x00008b98 in _start ()
(gdb) c
Continuing.
Program received signal SIGBUS, Bus error.
0x0000e18c in kill ()
(gdb) c
Continuing.
Program terminated with signal SIGUSR1, User defined signal 1.
^^^^^^^
The program no longer exists.
(gdb)
Thansk,
Wei-cheng Wang
From: Cole Wang <address@hidden>
Date: Mon, 27 Oct 2014 00:33:18 +0800
Subject: [PATCH] gdbstub: Convert gdb-signal to target signal when continuing.
Signed-off-by: Wei-cheng Wang <address@hidden>
---
gdbstub.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/gdbstub.c b/gdbstub.c
index d1b5afd..cce5c69 100644
--- a/gdbstub.c
+++ b/gdbstub.c
@@ -851,7 +851,7 @@ static int gdb_handle_packet(GDBState *s, const
char *line_buf)
if (res == 's') {
cpu_single_step(s->c_cpu, sstep_flags);
}
- s->signal = res_signal;
+ s->signal = gdb_signal_to_target(res_signal);
gdb_continue(s);
return RS_IDLE;
}
--
1.9.1