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gdbstub: Send a reply to the vKill packet.

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Per the GDB remote protocol documentation

https://sourceware.org/gdb/current/onlinedocs/gdb/Packets.html#index-vKill-packet

the debug stub is expected to send a reply to the 'vKill' packet.  At
least some versions of GDB crash if the gdb stub simply exits without
sending a reply.  This patch fixes QEMU's gdb stub to conform to the
expected behavior.

Note that QEMU's existing handling of the legacy 'k' packet is
correct: in that case GDB does not expect a reply, and QEMU does not
send one.

Signed-off-by: Sandra Loosemore <sandra@codesourcery.com>
Message-id: 1550008033-26540-1-git-send-email-sandra@codesourcery.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Sandra Loosemore 2019-02-15 09:56:41 +00:00 • committed by Peter Maydell
parent d8efe78e80
commit 0f8b09b222
1 changed files with 1 additions and 0 deletions
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1
gdbstub.c
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@ -1361,6 +1361,7 @@ static int gdb_handle_packet(GDBState *s, const char *line_buf)
break;
} else if (strncmp(p, "Kill;", 5) == 0) {
/* Kill the target */
put_packet(s, "OK");
error_report("QEMU: Terminated via GDBstub");
exit(0);
} else {