gdb/

	* ia64-linux-nat.c (ia64_linux_status_is_event): New function.
	(_initialize_ia64_linux_nat): Install it.
	* linux-nat.c (sigtrap_is_event, linux_nat_status_is_event)
	(linux_nat_set_status_is_event): New.
	(stop_wait_callback, count_events_callback, select_event_lwp_callback)
	cancel_breakpoints_callback, linux_nat_filter_event)
	(linux_nat_wait_1): Use linux_nat_status_is_event.
	* linux-nat.h (linux_nat_set_status_is_event): New prototype.

gdb/testsuite/
	* gdb.threads/ia64-sigill.exp: New file.
	* gdb.threads/ia64-sigill.c: New file.

1 files changed, 13 insertions, 0 deletions

diff --git a/gdb/ia64-linux-nat.c b/gdb/ia64-linux-nat.c
index d33e88e1546..f9f5bf36e91 100644
--- a/gdb/ia64-linux-nat.c
+++ b/gdb/ia64-linux-nat.c
@@ -809,6 +809,18 @@ ia64_linux_xfer_partial (struct target_ops *ops,
 			     offset, len);
 }
 
+/* For break.b instruction ia64 CPU forgets the immediate value and generates
+   SIGILL with ILL_ILLOPC instead of more common SIGTRAP with TRAP_BRKPT.
+   ia64 does not use gdbarch_decr_pc_after_break so we do not have to make any
+   difference for the signals here.  */
+
+static int
+ia64_linux_status_is_event (int status)
+{
+  return WIFSTOPPED (status) && (WSTOPSIG (status) == SIGTRAP
+				 || WSTOPSIG (status) == SIGILL);
+}
+
 void _initialize_ia64_linux_nat (void);
 
 void
@@ -848,4 +860,5 @@ _initialize_ia64_linux_nat (void)
   /* Register the target.  */
   linux_nat_add_target (t);
   linux_nat_set_new_thread (t, ia64_linux_new_thread);
+  linux_nat_set_status_is_event (t, ia64_linux_status_is_event);
 }