[Qemu-devel] [PATCH] gdbstub: Convert gdb-signal to target signal when continuing.

[Wei-cheng Wang <cole945@gmail.com>]

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 <cole945@gmail.com>
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 <cole945@gmail.com>
---
 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