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[Qemu-devel] Re: [PATCH] Fix to 'gdb detach' stub

From: Daniel Gutson
Subject: [Qemu-devel] Re: [PATCH] Fix to 'gdb detach' stub
Date: Mon, 22 Feb 2010 18:22:37 -0300
User-agent: Thunderbird (X11/20090817)

[Re-done with git.]
With this patch, 'gdb detach' correctly resumes the inferior execution after detaching the debugger. The bug was caused by qemu asking gdb to execute a syscall (isatty) after the detach, and then waiting (forever) for the reply. I fixed this by properly setting gdb_syscall_mode appropriately in the 'detach' packet handling, so subsequent syscalls are solved by qemu rather than gdb.

Signed-off-by: Daniel Gutson <address@hidden>
 gdbstub.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/gdbstub.c b/gdbstub.c
index 91c5f68..92bb36d 100644
--- a/gdbstub.c
+++ b/gdbstub.c
@@ -1848,6 +1848,7 @@ static int gdb_handle_packet(GDBState *s, const char *line_buf)
     case 'D':
         /* Detach packet */
+       gdb_syscall_mode = GDB_SYS_DISABLED;
         put_packet(s, "OK");

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