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2004-03-21 Andrew Cagney <cagney@redhat.com>

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* infrun.c (handle_inferior_event): For non legacy frames, use the
	frame ID and frame type to identify a signal trampoline.  Update
	comments.
This commit is contained in:
Andrew Cagney 2004-03-21 22:53:49 +00:00
parent 1777c7b4ae
commit ca4bb888c1
2 changed files with 18 additions and 15 deletions
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6
gdb/ChangeLog
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@ -1,3 +1,9 @@
2004-03-21 Andrew Cagney <cagney@redhat.com>
* infrun.c (handle_inferior_event): For non legacy frames, use the
frame ID and frame type to identify a signal trampoline. Update
comments.
2004-03-21 Nathan J. Williams <nathanw@wasabisystems.com>
* mipsnbsd-tdep.c: Update copyright. Include "mips-tdep.h".

27
gdb/infrun.c
View file

@ -2521,22 +2521,19 @@ process_event_stop_test:
But we can update it every time we leave the step range. */
ecs->update_step_sp = 1;
/* Did we just take a signal? */
if (pc_in_sigtramp (stop_pc)
&& !pc_in_sigtramp (prev_pc)
&& INNER_THAN (read_sp (), step_sp))
/* Did we just step into a singal trampoline (either by stepping out
of a handler, or by taking a signal)? */
/* NOTE: cagney/2004-03-16: Replaced (except for legacy) a check for
"pc_in_sigtramp(stop_pc) != pc_in_sigtramp(step_pc)" with
frame_type == SIGTRAMP && !frame_id_eq. The latter is far more
robust as it will correctly handle nested signal trampolines. */
if (legacy_frame_p (current_gdbarch)
? (pc_in_sigtramp (stop_pc)
&& !pc_in_sigtramp (prev_pc)
&& INNER_THAN (read_sp (), step_sp))
: (get_frame_type (get_current_frame ()) == SIGTRAMP_FRAME
&& !frame_id_eq (get_frame_id (get_current_frame ()), step_frame_id)))
{
/* We've just taken a signal; go until we are back to
the point where we took it and one more. */
/* Note: The test above succeeds not only when we stepped
into a signal handler, but also when we step past the last
statement of a signal handler and end up in the return stub
of the signal handler trampoline. To distinguish between
these two cases, check that the frame is INNER_THAN the
previous one below. pai/1997-09-11 */
{
struct frame_id current_frame = get_frame_id (get_current_frame ());