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authorPedro Alves <palves@redhat.com>2011-12-20 10:40:15 +0000
committerPedro Alves <palves@redhat.com>2011-12-20 10:40:15 +0000
commit6e012a6c38c5bb8f44669653d86fa8382ffd0922 (patch)
tree9ebec7606f2b36764bd1b0b686c7451c47733cc2 /gdb/linux-nat.c
parent87c31f06224db060e86fab624a9cc3580c01621d (diff)
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2011-12-20 Pedro Alves <alves.ped@gmail.com>
Jan Kratochvil <jan.kratochvil@redhat.com> * linux-nat.c (add_lwp): Don't call linux_nat_new_thread on the first LWP. * amd64-linux-nat.c (update_debug_registers_callback): Instantiate `lwp->arch_private' if NULL. (amd64_linux_prepare_to_resume): Do nothing if `lwp->arch_private' is NULL. * i386-linux-nat.c (update_debug_registers_callback): Instantiate `lwp->arch_private' if NULL. (i386_linux_prepare_to_resume): Do nothing if `lwp->arch_private' is NULL.
Diffstat (limited to 'gdb/linux-nat.c')
-rw-r--r--gdb/linux-nat.c10
1 files changed, 9 insertions, 1 deletions
diff --git a/gdb/linux-nat.c b/gdb/linux-nat.c
index 1cbfc44..e5f7c3e 100644
--- a/gdb/linux-nat.c
+++ b/gdb/linux-nat.c
@@ -1151,7 +1151,15 @@ add_lwp (ptid_t ptid)
lp->next = lwp_list;
lwp_list = lp;
- if (linux_nat_new_thread != NULL)
+ /* Let the arch specific bits know about this new thread. Current
+ clients of this callback take the opportunity to install
+ watchpoints in the new thread. Don't do this for the first
+ thread though. If we're spawning a child ("run"), the thread
+ executes the shell wrapper first, and we shouldn't touch it until
+ it execs the program we want to debug. For "attach", it'd be
+ okay to call the callback, but it's not necessary, because
+ watchpoints can't yet have been inserted into the inferior. */
+ if (num_lwps (GET_PID (ptid)) > 1 && linux_nat_new_thread != NULL)
linux_nat_new_thread (lp);
return lp;