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authorJan Kratochvil <jan.kratochvil@redhat.com>2010-11-28 04:33:47 +0000
committerJan Kratochvil <jan.kratochvil@redhat.com>2010-11-28 04:33:47 +0000
commit8358c15c55744630cf69baf9acd134b8cc04e7c7 (patch)
treee7a982a8c87c619e6ac8542864159b7bc5c30936 /gdb/infrun.c
parent16c381f0589cead48e7e707c6584ec8629601aad (diff)
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Fix step_resume_breakpoint unsaved during an infcall. * gdbthread.h (struct thread_control_state): Move here field step_resume_breakpoint ... (struct thread_info): ... from here. * infrun.c (save_infcall_control_state): Reset control.step_resume_breakpoint to NULL. (restore_infcall_control_state, discard_infcall_control_state): Delete control.step_resume_breakpoint. * arm-linux-tdep.c, infrun.c, thread.c: Update all the references to the moved field. gdb/testsuite/ Fix step_resume_breakpoint unsaved during an infcall. * gdb.base/step-resume-infcall.exp: New file. * gdb.base/step-resume-infcall.c: New file.
Diffstat (limited to 'gdb/infrun.c')
-rw-r--r--gdb/infrun.c52
1 files changed, 33 insertions, 19 deletions
diff --git a/gdb/infrun.c b/gdb/infrun.c
index 1144443..1604e95 100644
--- a/gdb/infrun.c
+++ b/gdb/infrun.c
@@ -424,8 +424,8 @@ follow_fork (void)
preserve the stepping state in the fork child. */
if (follow_child && should_resume)
{
- step_resume_breakpoint
- = clone_momentary_breakpoint (tp->step_resume_breakpoint);
+ step_resume_breakpoint = clone_momentary_breakpoint
+ (tp->control.step_resume_breakpoint);
step_range_start = tp->control.step_range_start;
step_range_end = tp->control.step_range_end;
step_frame_id = tp->control.step_frame_id;
@@ -476,7 +476,8 @@ follow_fork (void)
if (should_resume)
{
tp = inferior_thread ();
- tp->step_resume_breakpoint = step_resume_breakpoint;
+ tp->control.step_resume_breakpoint
+ = step_resume_breakpoint;
tp->control.step_range_start = step_range_start;
tp->control.step_range_end = step_range_end;
tp->control.step_frame_id = step_frame_id;
@@ -530,8 +531,8 @@ follow_inferior_reset_breakpoints (void)
"threads". We must update the bp's notion of which thread
it is for, or it'll be ignored when it triggers. */
- if (tp->step_resume_breakpoint)
- breakpoint_re_set_thread (tp->step_resume_breakpoint);
+ if (tp->control.step_resume_breakpoint)
+ breakpoint_re_set_thread (tp->control.step_resume_breakpoint);
/* Reinsert all breakpoints in the child. The user may have set
breakpoints after catching the fork, in which case those
@@ -769,7 +770,7 @@ follow_exec (ptid_t pid, char *execd_pathname)
/* If there was one, it's gone now. We cannot truly step-to-next
statement through an exec(). */
- th->step_resume_breakpoint = NULL;
+ th->control.step_resume_breakpoint = NULL;
th->control.step_range_start = 0;
th->control.step_range_end = 0;
@@ -3951,7 +3952,8 @@ infrun: no user watchpoint explains watchpoint SIGTRAP, ignoring\n");
|| stopped_by_watchpoint
|| ecs->event_thread->control.trap_expected
|| (ecs->event_thread->control.step_range_end
- && ecs->event_thread->step_resume_breakpoint == NULL));
+ && (ecs->event_thread->control.step_resume_breakpoint
+ == NULL)));
else
{
ecs->random_signal = !bpstat_explains_signal
@@ -4019,7 +4021,7 @@ process_event_stop_test:
if (ecs->event_thread->prev_pc == stop_pc
&& ecs->event_thread->control.trap_expected
- && ecs->event_thread->step_resume_breakpoint == NULL)
+ && ecs->event_thread->control.step_resume_breakpoint == NULL)
{
/* We were just starting a new sequence, attempting to
single-step off of a breakpoint and expecting a SIGTRAP.
@@ -4048,7 +4050,7 @@ process_event_stop_test:
&& stop_pc < ecs->event_thread->control.step_range_end)
&& frame_id_eq (get_stack_frame_id (frame),
ecs->event_thread->control.step_stack_frame_id)
- && ecs->event_thread->step_resume_breakpoint == NULL)
+ && ecs->event_thread->control.step_resume_breakpoint == NULL)
{
/* The inferior is about to take a signal that will take it
out of the single step range. Set a breakpoint at the
@@ -4135,7 +4137,8 @@ infrun: BPSTAT_WHAT_SET_LONGJMP_RESUME (!gdbarch_get_longjmp_target)\n");
fprintf_unfiltered (gdb_stdlog,
"infrun: BPSTAT_WHAT_CLEAR_LONGJMP_RESUME\n");
- gdb_assert (ecs->event_thread->step_resume_breakpoint != NULL);
+ gdb_assert (ecs->event_thread->control.step_resume_breakpoint
+ != NULL);
delete_step_resume_breakpoint (ecs->event_thread);
ecs->event_thread->control.stop_step = 1;
@@ -4311,7 +4314,7 @@ infrun: not switching back to stepped thread, it has vanished\n");
return;
}
- if (ecs->event_thread->step_resume_breakpoint)
+ if (ecs->event_thread->control.step_resume_breakpoint)
{
if (debug_infrun)
fprintf_unfiltered (gdb_stdlog,
@@ -4862,10 +4865,11 @@ infrun: not switching back to stepped thread, it has vanished\n");
static int
currently_stepping (struct thread_info *tp)
{
- return ((tp->control.step_range_end && tp->step_resume_breakpoint == NULL)
- || tp->control.trap_expected
- || tp->stepping_through_solib_after_catch
- || bpstat_should_step ());
+ return ((tp->control.step_range_end
+ && tp->control.step_resume_breakpoint == NULL)
+ || tp->control.trap_expected
+ || tp->stepping_through_solib_after_catch
+ || bpstat_should_step ());
}
/* Returns true if any thread *but* the one passed in "data" is in the
@@ -5010,14 +5014,14 @@ insert_step_resume_breakpoint_at_sal (struct gdbarch *gdbarch,
/* There should never be more than one step-resume or longjmp-resume
breakpoint per thread, so we should never be setting a new
step_resume_breakpoint when one is already active. */
- gdb_assert (inferior_thread ()->step_resume_breakpoint == NULL);
+ gdb_assert (inferior_thread ()->control.step_resume_breakpoint == NULL);
if (debug_infrun)
fprintf_unfiltered (gdb_stdlog,
"infrun: inserting step-resume breakpoint at %s\n",
paddress (gdbarch, sr_sal.pc));
- inferior_thread ()->step_resume_breakpoint
+ inferior_thread ()->control.step_resume_breakpoint
= set_momentary_breakpoint (gdbarch, sr_sal, sr_id, bp_step_resume);
}
@@ -5094,14 +5098,14 @@ insert_longjmp_resume_breakpoint (struct gdbarch *gdbarch, CORE_ADDR pc)
/* There should never be more than one step-resume or longjmp-resume
breakpoint per thread, so we should never be setting a new
longjmp_resume_breakpoint when one is already active. */
- gdb_assert (inferior_thread ()->step_resume_breakpoint == NULL);
+ gdb_assert (inferior_thread ()->control.step_resume_breakpoint == NULL);
if (debug_infrun)
fprintf_unfiltered (gdb_stdlog,
"infrun: inserting longjmp-resume breakpoint at %s\n",
paddress (gdbarch, pc));
- inferior_thread ()->step_resume_breakpoint =
+ inferior_thread ()->control.step_resume_breakpoint =
set_momentary_breakpoint_at_pc (gdbarch, pc, bp_longjmp_resume);
}
@@ -6212,6 +6216,8 @@ save_infcall_control_state (void)
inf_status->thread_control = tp->control;
inf_status->inferior_control = inf->control;
+ tp->control.step_resume_breakpoint = NULL;
+
/* Save original bpstat chain to INF_STATUS; replace it in TP with copy of
chain. If caller's caller is walking the chain, they'll be happier if we
hand them back the original chain when restore_infcall_control_state is
@@ -6257,6 +6263,9 @@ restore_infcall_control_state (struct infcall_control_state *inf_status)
struct thread_info *tp = inferior_thread ();
struct inferior *inf = current_inferior ();
+ if (tp->control.step_resume_breakpoint)
+ tp->control.step_resume_breakpoint->disposition = disp_del_at_next_stop;
+
/* Handle the bpstat_copy of the chain. */
bpstat_clear (&tp->control.stop_bpstat);
@@ -6301,8 +6310,13 @@ make_cleanup_restore_infcall_control_state
void
discard_infcall_control_state (struct infcall_control_state *inf_status)
{
+ if (inf_status->thread_control.step_resume_breakpoint)
+ inf_status->thread_control.step_resume_breakpoint->disposition
+ = disp_del_at_next_stop;
+
/* See save_infcall_control_state for info on stop_bpstat. */
bpstat_clear (&inf_status->thread_control.stop_bpstat);
+
xfree (inf_status);
}